main.c revision 8ad0dd2a5c5f23cd210aedba72a43e48026e7436
18ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 28ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * main.c - Point-to-Point Protocol main module 38ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 48ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. 58ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 68ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Redistribution and use in source and binary forms, with or without 78ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * modification, are permitted provided that the following conditions 88ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * are met: 98ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * notice, this list of conditions and the following disclaimer. 128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * notice, this list of conditions and the following disclaimer in 158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * the documentation and/or other materials provided with the 168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * distribution. 178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 3. The name "Carnegie Mellon University" must not be used to 198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * endorse or promote products derived from this software without 208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * prior written permission. For permission or any legal 218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * details, please contact 228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Office of Technology Transfer 238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Carnegie Mellon University 248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 5000 Forbes Avenue 258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Pittsburgh, PA 15213-3890 268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * (412) 268-4387, fax: (412) 268-7395 278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * tech-transfer@andrew.cmu.edu 288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 4. Redistributions of any form whatsoever must retain the following 308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * acknowledgment: 318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * "This product includes software developed by Computing Services 328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * at Carnegie Mellon University (http://www.cmu.edu/computing/)." 338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO 358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE 378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Copyright (c) 1999-2004 Paul Mackerras. All rights reserved. 438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Redistribution and use in source and binary forms, with or without 458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * modification, are permitted provided that the following conditions 468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * are met: 478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * notice, this list of conditions and the following disclaimer. 508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 2. The name(s) of the authors of this software must not be used to 528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * endorse or promote products derived from this software without 538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * prior written permission. 548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 3. Redistributions of any form whatsoever must retain the following 568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * acknowledgment: 578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * "This product includes software developed by Paul Mackerras 588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * <paulus@samba.org>". 598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO 618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY 638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#define RCSID "$Id: main.c,v 1.148 2004/11/13 12:05:48 paulus Exp $" 708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <stdio.h> 728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <ctype.h> 738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <stdlib.h> 748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <string.h> 758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <unistd.h> 768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <signal.h> 778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <errno.h> 788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <fcntl.h> 798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <syslog.h> 808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <netdb.h> 818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <utmp.h> 828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <pwd.h> 838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <setjmp.h> 848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <sys/param.h> 858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <sys/types.h> 868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <sys/wait.h> 878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <sys/time.h> 888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <sys/resource.h> 898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <sys/stat.h> 908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <sys/socket.h> 918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <netinet/in.h> 928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <arpa/inet.h> 938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include <cutils/properties.h> 948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "pppd.h" 968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "magic.h" 978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "fsm.h" 988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "lcp.h" 998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "ipcp.h" 1008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef INET6 1018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "ipv6cp.h" 1028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 1038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "upap.h" 1048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "chap-new.h" 1058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "eap.h" 1068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "ccp.h" 1078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "ecp.h" 1088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "pathnames.h" 1098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 1118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "tdb.h" 1128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 1138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef CBCP_SUPPORT 1158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "cbcp.h" 1168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 1178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef IPX_CHANGE 1198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "ipxcp.h" 1208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif /* IPX_CHANGE */ 1218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef AT_CHANGE 1228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#include "atcp.h" 1238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 1248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic const char rcsid[] = RCSID; 1268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* interface vars */ 1288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectchar ifname[32]; /* Interface name */ 1298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint ifunit; /* Interface unit number */ 1308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct channel *the_channel; 1328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectchar *progname; /* Name of this program */ 1348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectchar hostname[MAXNAMELEN]; /* Our hostname */ 1358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic char pidfilename[MAXPATHLEN]; /* name of pid file */ 1368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic char linkpidfile[MAXPATHLEN]; /* name of linkname pid file */ 1378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectchar ppp_devnam[MAXPATHLEN]; /* name of PPP tty (maybe ttypx) */ 1388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectuid_t uid; /* Our real user-id */ 1398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct notifier *pidchange = NULL; 1408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct notifier *phasechange = NULL; 1418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct notifier *exitnotify = NULL; 1428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct notifier *sigreceived = NULL; 1438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct notifier *fork_notifier = NULL; 1448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint hungup; /* terminal has been hung up */ 1468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint privileged; /* we're running as real uid root */ 1478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint need_holdoff; /* need holdoff period before restarting */ 1488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint detached; /* have detached from terminal */ 1498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvolatile int status; /* exit status for pppd */ 1508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint unsuccess; /* # unsuccessful connection attempts */ 1518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint do_callback; /* != 0 if we should do callback next */ 1528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint doing_callback; /* != 0 if we are doing callback */ 1538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint ppp_session_number; /* Session number, for channels with such a 1548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project concept (eg PPPoE) */ 1558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint childwait_done; /* have timed out waiting for children */ 1568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 1588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source ProjectTDB_CONTEXT *pppdb; /* database for storing status etc. */ 1598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 1608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectchar db_key[32]; 1628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint (*holdoff_hook) __P((void)) = NULL; 1648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint (*new_phase_hook) __P((int)) = NULL; 1658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid (*snoop_recv_hook) __P((unsigned char *p, int len)) = NULL; 1668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid (*snoop_send_hook) __P((unsigned char *p, int len)) = NULL; 1678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic int conn_running; /* we have a [dis]connector running */ 1698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic int fd_loop; /* fd for getting demand-dial packets */ 1708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint fd_devnull; /* fd for /dev/null */ 1728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint devfd = -1; /* fd of underlying device */ 1738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint fd_ppp = -1; /* fd for talking PPP */ 1748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint phase; /* where the link is at */ 1758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint kill_link; 1768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint asked_to_quit; 1778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint open_ccp_flag; 1788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint listen_time; 1798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint got_sigusr2; 1808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint got_sigterm; 1818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint got_sighup; 1828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic sigset_t signals_handled; 1848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic int waiting; 1858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic sigjmp_buf sigjmp; 1868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectchar **script_env; /* Env. variable values for scripts */ 1888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint s_env_nalloc; /* # words avail at script_env */ 1898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectu_char outpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for outgoing packet */ 1918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectu_char inpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for incoming packet */ 1928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic int n_children; /* # child processes still running */ 1948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic int got_sigchld; /* set if we have received a SIGCHLD */ 1958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint privopen; /* don't lock, open device as root */ 1978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 1988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectchar *no_ppp_msg = "Sorry - this system lacks PPP kernel support\n"; 1998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source ProjectGIDSET_TYPE groups[NGROUPS_MAX];/* groups the user is in */ 2018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint ngroups; /* How many groups valid in groups */ 2028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic struct timeval start_time; /* Time when link was started. */ 2048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic struct pppd_stats old_link_stats; 2068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct pppd_stats link_stats; 2078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectunsigned link_connect_time; 2088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint link_stats_valid; 2098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint error_count; 2118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectbool bundle_eof; 2138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectbool bundle_terminating; 2148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint sent_since_received = 0; 2168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint sent_total = 0; 2178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint received_total = 0; 2188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 2208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * We maintain a list of child process pids and 2218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * functions to call when they exit. 2228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 2238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct subprocess { 2248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pid_t pid; 2258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *prog; 2268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void (*done) __P((void *)); 2278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void *arg; 2288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct subprocess *next; 2298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project}; 2308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic struct subprocess *children; 2328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* Prototypes for procedures local to this file. */ 2348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void setup_signals __P((void)); 2368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void create_pidfile __P((int pid)); 2378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void create_linkpidfile __P((int pid)); 2388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void cleanup __P((void)); 2398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void get_input __P((void)); 2408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void calltimeout __P((void)); 2418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic struct timeval *timeleft __P((struct timeval *)); 2428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void kill_my_pg __P((int)); 2438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void hup __P((int)); 2448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void term __P((int)); 2458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void chld __P((int)); 2468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void toggle_debug __P((int)); 2478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void open_ccp __P((int)); 2488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void bad_signal __P((int)); 2498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void holdoff_end __P((void *)); 2508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic int reap_kids __P((void)); 2518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void childwait_end __P((void *)); 2528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 2548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void update_db_entry __P((void)); 2558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void add_db_key __P((const char *)); 2568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void delete_db_key __P((const char *)); 2578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void cleanup_db __P((void)); 2588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 2598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void handle_events __P((void)); 2618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid print_link_stats __P((void)); 2628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectextern char *ttyname __P((int)); 2648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectextern char *getlogin __P((void)); 2658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint main __P((int, char *[])); 2668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef ultrix 2688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#undef O_NONBLOCK 2698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#define O_NONBLOCK O_NDELAY 2708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 2718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef ULTRIX 2738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#define setlogmask(x) 2748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 2758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 2768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 2778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * PPP Data Link Layer "protocol" table. 2788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * One entry per supported protocol. 2798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * The last entry must be NULL. 2808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 2818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct protent *protocols[] = { 2828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &lcp_protent, 2838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &pap_protent, 2848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &chap_protent, 2858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef CBCP_SUPPORT 2868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &cbcp_protent, 2878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 2888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &ipcp_protent, 2898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef INET6 2908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &ipv6cp_protent, 2918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 2928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &ccp_protent, 2938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &ecp_protent, 2948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef IPX_CHANGE 2958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &ipxcp_protent, 2968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 2978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef AT_CHANGE 2988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &atcp_protent, 2998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 3008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project &eap_protent, 3018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project NULL 3028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project}; 3038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 3058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * If PPP_DRV_NAME is not defined, use the default "ppp" as the device name. 3068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 3078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#if !defined(PPP_DRV_NAME) 3088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#define PPP_DRV_NAME "ppp" 3098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif /* !defined(PPP_DRV_NAME) */ 3108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint 3128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectmain(argc, argv) 3138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int argc; 3148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *argv[]; 3158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 3168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int i, t; 3178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *p; 3188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct passwd *pw; 3198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct protent *protp; 3208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char numbuf[16]; 3218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project link_stats_valid = 0; 3238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project new_phase(PHASE_INITIALIZE); 3248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_env = NULL; 3268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* Initialize syslog facilities */ 3288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project reopen_log(); 3298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (gethostname(hostname, MAXNAMELEN) < 0 ) { 3318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project option_error("Couldn't get hostname: %m"); 3328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project exit(1); 3338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 3348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project hostname[MAXNAMELEN-1] = 0; 3358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* make sure we don't create world or group writable files. */ 3378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project umask(umask(0777) | 022); 3388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project uid = getuid(); 3408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project privileged = uid == 0; 3418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(numbuf, sizeof(numbuf), "%d", uid); 3428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_setenv("ORIG_UID", numbuf, 0); 3438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project ngroups = getgroups(NGROUPS_MAX, groups); 3458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 3478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Initialize magic number generator now so that protocols may 3488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * use magic numbers in initialization. 3498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 3508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project magic_init(); 3518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 3538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Initialize each protocol. 3548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 3558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (i = 0; (protp = protocols[i]) != NULL; ++i) 3568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*protp->init)(0); 3578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 3598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Initialize the default channel. 3608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 3618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tty_init(); 3628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project progname = *argv; 3648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 3668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Parse, in order, the system options file, the user's options file, 3678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * and the command line arguments. 3688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 3698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef ANDROID 3708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* Android: only take options from commandline */ 3718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!parse_args(argc-1, argv+1)) 3728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project exit(EXIT_OPTION_ERROR); 3738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#else 3758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!options_from_file(_PATH_SYSOPTIONS, !privileged, 0, 1) 3768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project || !options_from_user() 3778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project || !parse_args(argc-1, argv+1)) 3788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project exit(EXIT_OPTION_ERROR); 3798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 3818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project devnam_fixed = 1; /* can no longer change device name */ 3838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 3858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Work out the device name, if it hasn't already been specified, 3868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * and parse the tty's options file. 3878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 3888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (the_channel->process_extra_options) 3898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*the_channel->process_extra_options)(); 3908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (debug) 3928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project setlogmask(LOG_UPTO(LOG_DEBUG)); 3938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 3948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 3958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Check that we are running as root. 3968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 3978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (geteuid() != 0) { 3988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project option_error("must be root to run %s, since it is not setuid-root", 3998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project argv[0]); 4008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project exit(EXIT_NOT_ROOT); 4018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 4028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!ppp_available()) { 4048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project option_error("%s", no_ppp_msg); 4058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project exit(EXIT_NO_KERNEL_SUPPORT); 4068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 4078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 4098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Check that the options given are valid and consistent. 4108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 4118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project check_options(); 4128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!sys_check_options()) 4138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project exit(EXIT_OPTION_ERROR); 4148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project auth_check_options(); 4158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef HAVE_MULTILINK 4168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project mp_check_options(); 4178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 4188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (i = 0; (protp = protocols[i]) != NULL; ++i) 4198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (protp->check_options != NULL) 4208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*protp->check_options)(); 4218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (the_channel->check_options) 4228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*the_channel->check_options)(); 4238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (dump_options || dryrun) { 4268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project init_pr_log(NULL, LOG_INFO); 4278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project print_options(pr_log, NULL); 4288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project end_pr_log(); 4298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 4308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (dryrun) 4328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project die(0); 4338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* Make sure fds 0, 1, 2 are open to somewhere. */ 4358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fd_devnull = open(_PATH_DEVNULL, O_RDWR); 4368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (fd_devnull < 0) 4378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fatal("Couldn't open %s: %m", _PATH_DEVNULL); 4388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project while (fd_devnull <= 2) { 4398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project i = dup(fd_devnull); 4408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (i < 0) 4418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fatal("Critical shortage of file descriptors: dup failed: %m"); 4428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fd_devnull = i; 4438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 4448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 4468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Initialize system-dependent stuff. 4478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 4488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sys_init(); 4498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 4508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pppdb = tdb_open(_PATH_PPPDB, 0, 0, O_RDWR|O_CREAT, 0644); 4518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pppdb != NULL) { 4528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(db_key, sizeof(db_key), "pppd%d", getpid()); 4538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project update_db_entry(); 4548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } else { 4558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project warn("Warning: couldn't open ppp database %s", _PATH_PPPDB); 4568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (multilink) { 4578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project warn("Warning: disabling multilink"); 4588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project multilink = 0; 4598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 4608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 4618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 4628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 4648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Detach ourselves from the terminal, if required, 4658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * and identify who is running us. 4668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 4678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!nodetach && !updetach) 4688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project detach(); 4698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project p = getlogin(); 4708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (p == NULL) { 4718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pw = getpwuid(uid); 4728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pw != NULL && pw->pw_name != NULL) 4738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project p = pw->pw_name; 4748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project else 4758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project p = "(unknown)"; 4768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 4778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project syslog(LOG_NOTICE, "pppd %s started by %s, uid %d", VERSION, p, uid); 4788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_setenv("PPPLOGNAME", p, 0); 4798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (devnam[0]) 4818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_setenv("DEVICE", devnam, 1); 4828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(numbuf, sizeof(numbuf), "%d", getpid()); 4838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_setenv("PPPD_PID", numbuf, 1); 4848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project setup_signals(); 4868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project create_linkpidfile(getpid()); 4888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project waiting = 0; 4908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 4918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 4928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * If we're doing dial-on-demand, set up the interface now. 4938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 4948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (demand) { 4958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 4968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Open the loopback channel and set it up to be the ppp interface. 4978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 4988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fd_loop = open_ppp_loopback(); 4998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project set_ifunit(1); 5008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 5018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Configure the interface and mark it up, etc. 5028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 5038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project demand_conf(); 5048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 5058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 5068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project do_callback = 0; 5078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (;;) { 5088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 5098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project bundle_eof = 0; 5108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project bundle_terminating = 0; 5118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project listen_time = 0; 5128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project need_holdoff = 1; 5138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project devfd = -1; 5148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project status = EXIT_OK; 5158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project ++unsuccess; 5168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project doing_callback = do_callback; 5178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project do_callback = 0; 5188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 5198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (demand && !doing_callback) { 5208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 5218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Don't do anything until we see some activity. 5228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 5238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project new_phase(PHASE_DORMANT); 5248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project demand_unblock(); 5258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project add_fd(fd_loop); 5268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (;;) { 5278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project handle_events(); 5288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (asked_to_quit) 5298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 5308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (get_loop_output()) 5318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 5328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 5338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project remove_fd(fd_loop); 5348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (asked_to_quit) 5358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 5368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 5378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 5388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Now we want to bring up the link. 5398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 5408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project demand_block(); 5418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project info("Starting link"); 5428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 5438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 5448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project gettimeofday(&start_time, NULL); 5458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_unsetenv("CONNECT_TIME"); 5468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_unsetenv("BYTES_SENT"); 5478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_unsetenv("BYTES_RCVD"); 5488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 5498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project lcp_open(0); /* Start protocol */ 5508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project while (phase != PHASE_DEAD) { 5518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project handle_events(); 5528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project get_input(); 5538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (kill_link) 5548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project lcp_close(0, "User request"); 5558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (asked_to_quit) { 5568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project bundle_terminating = 1; 5578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (phase == PHASE_MASTER) 5588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project mp_bundle_terminated(); 5598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 5608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (open_ccp_flag) { 5618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (phase == PHASE_NETWORK || phase == PHASE_RUNNING) { 5628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project ccp_fsm[0].flags = OPT_RESTART; /* clears OPT_SILENT */ 5638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*ccp_protent.open)(0); 5648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 5658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 5668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 5678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 5688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!persist || asked_to_quit || (maxfail > 0 && unsuccess >= maxfail)) 5698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 5708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 5718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (demand) 5728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project demand_discard(); 5738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project t = need_holdoff? holdoff: 0; 5748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (holdoff_hook) 5758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project t = (*holdoff_hook)(); 5768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (t > 0) { 5778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project new_phase(PHASE_HOLDOFF); 5788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project TIMEOUT(holdoff_end, NULL, t); 5798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project do { 5808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project handle_events(); 5818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (kill_link) 5828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project new_phase(PHASE_DORMANT); /* allow signal to end holdoff */ 5838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } while (phase == PHASE_HOLDOFF); 5848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!persist) 5858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 5868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 5878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 5888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 5898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* Wait for scripts to finish */ 5908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project reap_kids(); 5918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (n_children > 0) { 5928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (child_wait > 0) 5938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project TIMEOUT(childwait_end, NULL, child_wait); 5948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (debug) { 5958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct subprocess *chp; 5968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbglog("Waiting for %d child processes...", n_children); 5978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (chp = children; chp != NULL; chp = chp->next) 5988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbglog(" script %s, pid %d", chp->prog, chp->pid); 5998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 6008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project while (n_children > 0 && !childwait_done) { 6018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project handle_events(); 6028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (kill_link && !childwait_done) 6038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project childwait_end(NULL); 6048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 6058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 6068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 6078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project die(status); 6088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return 0; 6098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 6108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 6118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 6128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * handle_events - wait for something to happen and respond to it. 6138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 6148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 6158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projecthandle_events() 6168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 6178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct timeval timo; 6188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 6198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project kill_link = open_ccp_flag = 0; 6208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (sigsetjmp(sigjmp, 1) == 0) { 6218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigprocmask(SIG_BLOCK, &signals_handled, NULL); 6228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (got_sighup || got_sigterm || got_sigusr2 || got_sigchld) { 6238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigprocmask(SIG_UNBLOCK, &signals_handled, NULL); 6248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } else { 6258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project waiting = 1; 6268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigprocmask(SIG_UNBLOCK, &signals_handled, NULL); 6278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project wait_input(timeleft(&timo)); 6288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 6298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 6308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project waiting = 0; 6318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project calltimeout(); 6328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (got_sighup) { 6338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project info("Hangup (SIGHUP)"); 6348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project kill_link = 1; 6358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project got_sighup = 0; 6368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (status != EXIT_HANGUP) 6378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project status = EXIT_USER_REQUEST; 6388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 6398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (got_sigterm) { 6408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project info("Terminating on signal %d", got_sigterm); 6418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project kill_link = 1; 6428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project asked_to_quit = 1; 6438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project persist = 0; 6448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project status = EXIT_USER_REQUEST; 6458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project got_sigterm = 0; 6468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 6478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (got_sigchld) { 6488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project got_sigchld = 0; 6498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project reap_kids(); /* Don't leave dead kids lying around */ 6508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 6518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (got_sigusr2) { 6528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project open_ccp_flag = 1; 6538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project got_sigusr2 = 0; 6548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 6558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 6568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 6578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 6588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * setup_signals - initialize signal handling. 6598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 6608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 6618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectsetup_signals() 6628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 6638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct sigaction sa; 6648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 6658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 6668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Compute mask of all interesting signals and install signal handlers 6678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * for each. Only one signal handler may be active at a time. Therefore, 6688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * all other signals should be masked when any handler is executing. 6698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 6708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigemptyset(&signals_handled); 6718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigaddset(&signals_handled, SIGHUP); 6728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigaddset(&signals_handled, SIGINT); 6738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigaddset(&signals_handled, SIGTERM); 6748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigaddset(&signals_handled, SIGCHLD); 6758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigaddset(&signals_handled, SIGUSR2); 6768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 6778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#define SIGNAL(s, handler) do { \ 6788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sa.sa_handler = handler; \ 6798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (sigaction(s, &sa, NULL) < 0) \ 6808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fatal("Couldn't establish signal handler (%d): %m", s); \ 6818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } while (0) 6828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 6838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sa.sa_mask = signals_handled; 6848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sa.sa_flags = 0; 6858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGHUP, hup); /* Hangup */ 6868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGINT, term); /* Interrupt */ 6878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGTERM, term); /* Terminate */ 6888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGCHLD, chld); 6898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 6908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGUSR1, toggle_debug); /* Toggle debug flag */ 6918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGUSR2, open_ccp); /* Reopen CCP */ 6928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 6938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 6948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Install a handler for other signals which would otherwise 6958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * cause pppd to exit without cleaning up. 6968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 6978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGABRT, bad_signal); 6988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGALRM, bad_signal); 6998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGFPE, bad_signal); 7008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGILL, bad_signal); 7018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGPIPE, bad_signal); 7028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGQUIT, bad_signal); 7038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGSEGV, bad_signal); 7048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef SIGBUS 7058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGBUS, bad_signal); 7068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 7078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef SIGEMT 7088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGEMT, bad_signal); 7098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 7108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef SIGPOLL 7118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGPOLL, bad_signal); 7128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 7138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef SIGPROF 7148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGPROF, bad_signal); 7158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 7168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef SIGSYS 7178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGSYS, bad_signal); 7188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 7198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef SIGTRAP 7208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGTRAP, bad_signal); 7218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 7228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef SIGVTALRM 7238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGVTALRM, bad_signal); 7248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 7258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef SIGXCPU 7268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGXCPU, bad_signal); 7278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 7288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef SIGXFSZ 7298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project SIGNAL(SIGXFSZ, bad_signal); 7308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 7318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 7328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 7338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Apparently we can get a SIGPIPE when we call syslog, if 7348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * syslogd has died and been restarted. Ignoring it seems 7358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * be sufficient. 7368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 7378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project signal(SIGPIPE, SIG_IGN); 7388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 7398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 7408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 7418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * set_ifunit - do things we need to do once we know which ppp 7428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * unit we are using. 7438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 7448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 7458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectset_ifunit(iskey) 7468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int iskey; 7478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 7488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project info("Using interface %s%d", PPP_DRV_NAME, ifunit); 7498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(ifname, sizeof(ifname), "%s%d", PPP_DRV_NAME, ifunit); 7508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_setenv("IFNAME", ifname, iskey); 7518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (iskey) { 7528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project create_pidfile(getpid()); /* write pid to file */ 7538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project create_linkpidfile(getpid()); 7548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 7558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 7568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 7578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 7588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * detach - detach us from the controlling terminal. 7598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 7608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 7618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectdetach() 7628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 7638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int pid; 7648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char numbuf[16]; 7658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int pipefd[2]; 7668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 7678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (detached) 7688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 7698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pipe(pipefd) == -1) 7708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pipefd[0] = pipefd[1] = -1; 7718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if ((pid = fork()) < 0) { 7728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project error("Couldn't detach (fork failed: %m)"); 7738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project die(1); /* or just return? */ 7748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 7758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pid != 0) { 7768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* parent */ 7778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notify(pidchange, pid); 7788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* update pid files if they have been written already */ 7798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pidfilename[0]) 7808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project create_pidfile(pid); 7818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (linkpidfile[0]) 7828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project create_linkpidfile(pid); 7838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project exit(0); /* parent dies */ 7848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 7858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project setsid(); 7868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project chdir("/"); 7878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dup2(fd_devnull, 0); 7888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dup2(fd_devnull, 1); 7898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dup2(fd_devnull, 2); 7908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project detached = 1; 7918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (log_default) 7928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project log_to_fd = -1; 7938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(numbuf, sizeof(numbuf), "%d", getpid()); 7948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_setenv("PPPD_PID", numbuf, 1); 7958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 7968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* wait for parent to finish updating pid & lock files and die */ 7978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(pipefd[1]); 7988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project complete_read(pipefd[0], numbuf, 1); 7998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(pipefd[0]); 8008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 8018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 8028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 8038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * reopen_log - (re)open our connection to syslog. 8048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 8058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 8068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectreopen_log() 8078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 8088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP); 8098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project setlogmask(LOG_UPTO(LOG_INFO)); 8108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 8118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 8128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 8138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Create a file containing our process ID. 8148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 8158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 8168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectcreate_pidfile(pid) 8178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int pid; 8188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 8198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project FILE *pidfile; 8208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 8218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(pidfilename, sizeof(pidfilename), "%s%s.pid", 8228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project _PATH_VARRUN, ifname); 8238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if ((pidfile = fopen(pidfilename, "w")) != NULL) { 8248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fprintf(pidfile, "%d\n", pid); 8258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (void) fclose(pidfile); 8268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } else { 8278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project error("Failed to create pid file %s: %m", pidfilename); 8288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pidfilename[0] = 0; 8298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 8308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 8318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 8328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 8338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectcreate_linkpidfile(pid) 8348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int pid; 8358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 8368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project FILE *pidfile; 8378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 8388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (linkname[0] == 0) 8398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 8408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_setenv("LINKNAME", linkname, 1); 8418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(linkpidfile, sizeof(linkpidfile), "%sppp-%s.pid", 8428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project _PATH_VARRUN, linkname); 8438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if ((pidfile = fopen(linkpidfile, "w")) != NULL) { 8448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fprintf(pidfile, "%d\n", pid); 8458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (ifname[0]) 8468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fprintf(pidfile, "%s\n", ifname); 8478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (void) fclose(pidfile); 8488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } else { 8498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project error("Failed to create pid file %s: %m", linkpidfile); 8508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project linkpidfile[0] = 0; 8518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 8528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 8538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 8548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 8558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * remove_pidfile - remove our pid files 8568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 8578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid remove_pidfiles() 8588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 8598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pidfilename[0] != 0 && unlink(pidfilename) < 0 && errno != ENOENT) 8608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project warn("unable to delete pid file %s: %m", pidfilename); 8618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pidfilename[0] = 0; 8628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (linkpidfile[0] != 0 && unlink(linkpidfile) < 0 && errno != ENOENT) 8638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project warn("unable to delete pid file %s: %m", linkpidfile); 8648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project linkpidfile[0] = 0; 8658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 8668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 8678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 8688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * holdoff_end - called via a timeout when the holdoff period ends. 8698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 8708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 8718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectholdoff_end(arg) 8728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void *arg; 8738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 8748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project new_phase(PHASE_DORMANT); 8758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 8768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 8778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* List of protocol names, to make our messages a little more informative. */ 8788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct protocol_list { 8798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project u_short proto; 8808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project const char *name; 8818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} protocol_list[] = { 8828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x21, "IP" }, 8838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x23, "OSI Network Layer" }, 8848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x25, "Xerox NS IDP" }, 8858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x27, "DECnet Phase IV" }, 8868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x29, "Appletalk" }, 8878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x2b, "Novell IPX" }, 8888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x2d, "VJ compressed TCP/IP" }, 8898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x2f, "VJ uncompressed TCP/IP" }, 8908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x31, "Bridging PDU" }, 8918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x33, "Stream Protocol ST-II" }, 8928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x35, "Banyan Vines" }, 8938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x39, "AppleTalk EDDP" }, 8948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x3b, "AppleTalk SmartBuffered" }, 8958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x3d, "Multi-Link" }, 8968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x3f, "NETBIOS Framing" }, 8978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x41, "Cisco Systems" }, 8988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x43, "Ascom Timeplex" }, 8998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x45, "Fujitsu Link Backup and Load Balancing (LBLB)" }, 9008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x47, "DCA Remote Lan" }, 9018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x49, "Serial Data Transport Protocol (PPP-SDTP)" }, 9028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x4b, "SNA over 802.2" }, 9038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x4d, "SNA" }, 9048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x4f, "IP6 Header Compression" }, 9058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x6f, "Stampede Bridging" }, 9068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0xfb, "single-link compression" }, 9078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0xfd, "1st choice compression" }, 9088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x0201, "802.1d Hello Packets" }, 9098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x0203, "IBM Source Routing BPDU" }, 9108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x0205, "DEC LANBridge100 Spanning Tree" }, 9118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x0231, "Luxcom" }, 9128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x0233, "Sigma Network Systems" }, 9138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8021, "Internet Protocol Control Protocol" }, 9148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8023, "OSI Network Layer Control Protocol" }, 9158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8025, "Xerox NS IDP Control Protocol" }, 9168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8027, "DECnet Phase IV Control Protocol" }, 9178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8029, "Appletalk Control Protocol" }, 9188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x802b, "Novell IPX Control Protocol" }, 9198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8031, "Bridging NCP" }, 9208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8033, "Stream Protocol Control Protocol" }, 9218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8035, "Banyan Vines Control Protocol" }, 9228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x803d, "Multi-Link Control Protocol" }, 9238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x803f, "NETBIOS Framing Control Protocol" }, 9248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8041, "Cisco Systems Control Protocol" }, 9258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8043, "Ascom Timeplex" }, 9268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8045, "Fujitsu LBLB Control Protocol" }, 9278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8047, "DCA Remote Lan Network Control Protocol (RLNCP)" }, 9288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x8049, "Serial Data Control Protocol (PPP-SDCP)" }, 9298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x804b, "SNA over 802.2 Control Protocol" }, 9308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x804d, "SNA Control Protocol" }, 9318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x804f, "IP6 Header Compression Control Protocol" }, 9328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x006f, "Stampede Bridging Control Protocol" }, 9338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x80fb, "Single Link Compression Control Protocol" }, 9348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0x80fd, "Compression Control Protocol" }, 9358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0xc021, "Link Control Protocol" }, 9368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0xc023, "Password Authentication Protocol" }, 9378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0xc025, "Link Quality Report" }, 9388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0xc027, "Shiva Password Authentication Protocol" }, 9398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0xc029, "CallBack Control Protocol (CBCP)" }, 9408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0xc081, "Container Control Protocol" }, 9418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0xc223, "Challenge Handshake Authentication Protocol" }, 9428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0xc281, "Proprietary Authentication Protocol" }, 9438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project { 0, NULL }, 9448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project}; 9458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 9468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 9478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * protocol_name - find a name for a PPP protocol. 9488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 9498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectconst char * 9508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectprotocol_name(proto) 9518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int proto; 9528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 9538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct protocol_list *lp; 9548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 9558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (lp = protocol_list; lp->proto != 0; ++lp) 9568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (proto == lp->proto) 9578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return lp->name; 9588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return NULL; 9598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 9608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 9618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 9628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * get_input - called when incoming data is available. 9638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 9648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 9658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectget_input() 9668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 9678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int len, i; 9688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project u_char *p; 9698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project u_short protocol; 9708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct protent *protp; 9718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 9728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project p = inpacket_buf; /* point to beginning of packet buffer */ 9738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 9748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project len = read_packet(inpacket_buf); 9758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (len < 0) 9768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 9778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 9788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (len == 0) { 9798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (bundle_eof && multilink_master) { 9808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notice("Last channel has disconnected"); 9818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project mp_bundle_terminated(); 9828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 9838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 9848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notice("Modem hangup"); 9858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project hungup = 1; 9868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project status = EXIT_HANGUP; 9878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project lcp_lowerdown(0); /* serial link is no longer available */ 9888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project link_terminated(0); 9898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 9908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 9918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 9928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (len < PPP_HDRLEN) { 9938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbglog("received short packet:%.*B", len, p); 9948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 9958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 9968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 9978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dump_packet("rcvd", p, len); 9988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (snoop_recv_hook) snoop_recv_hook(p, len); 9998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 10008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project p += 2; /* Skip address and control */ 10018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project GETSHORT(protocol, p); 10028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project len -= PPP_HDRLEN; 10038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 10048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 10058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Toss all non-LCP packets unless LCP is OPEN. 10068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 10078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (protocol != PPP_LCP && lcp_fsm[0].state != OPENED) { 10088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbglog("Discarded non-LCP packet when LCP not open"); 10098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 10108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 10118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 10128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 10138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Until we get past the authentication phase, toss all packets 10148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * except LCP, LQR and authentication packets. 10158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 10168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (phase <= PHASE_AUTHENTICATE 10178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project && !(protocol == PPP_LCP || protocol == PPP_LQR 10188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project || protocol == PPP_PAP || protocol == PPP_CHAP || 10198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project protocol == PPP_EAP)) { 10208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbglog("discarding proto 0x%x in phase %d", 10218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project protocol, phase); 10228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 10238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 10248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 10258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 10268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Upcall the proper protocol input routine. 10278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 10288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (i = 0; (protp = protocols[i]) != NULL; ++i) { 10298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (protp->protocol == protocol && protp->enabled_flag) { 10308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*protp->input)(0, p, len); 10318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 10328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 10338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (protocol == (protp->protocol & ~0x8000) && protp->enabled_flag 10348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project && protp->datainput != NULL) { 10358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*protp->datainput)(0, p, len); 10368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 10378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 10388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 10398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 10408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (debug) { 10418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project const char *pname = protocol_name(protocol); 10428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pname != NULL) 10438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project warn("Unsupported protocol '%s' (0x%x) received", pname, protocol); 10448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project else 10458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project warn("Unsupported protocol 0x%x received", protocol); 10468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 10478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project lcp_sprotrej(0, p - PPP_HDRLEN, len + PPP_HDRLEN); 10488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 10498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 10508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 10518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * ppp_send_config - configure the transmit-side characteristics of 10528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * the ppp interface. Returns -1, indicating an error, if the channel 10538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * send_config procedure called error() (or incremented error_count 10548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * itself), otherwise 0. 10558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 10568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint 10578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectppp_send_config(unit, mtu, accm, pcomp, accomp) 10588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int unit, mtu; 10598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project u_int32_t accm; 10608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int pcomp, accomp; 10618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 10628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int errs; 10638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 10648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (the_channel->send_config == NULL) 10658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return 0; 10668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project errs = error_count; 10678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*the_channel->send_config)(mtu, accm, pcomp, accomp); 10688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return (error_count != errs)? -1: 0; 10698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 10708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 10718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 10728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * ppp_recv_config - configure the receive-side characteristics of 10738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * the ppp interface. Returns -1, indicating an error, if the channel 10748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * recv_config procedure called error() (or incremented error_count 10758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * itself), otherwise 0. 10768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 10778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint 10788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectppp_recv_config(unit, mru, accm, pcomp, accomp) 10798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int unit, mru; 10808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project u_int32_t accm; 10818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int pcomp, accomp; 10828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 10838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int errs; 10848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 10858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (the_channel->recv_config == NULL) 10868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return 0; 10878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project errs = error_count; 10888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*the_channel->recv_config)(mru, accm, pcomp, accomp); 10898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return (error_count != errs)? -1: 0; 10908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 10918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 10928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 10938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * new_phase - signal the start of a new phase of pppd's operation. 10948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 10958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 10968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectnew_phase(p) 10978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int p; 10988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 10998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project phase = p; 11008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (new_phase_hook) 11018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*new_phase_hook)(p); 11028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notify(phasechange, p); 11038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 11048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 11068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * die - clean up state and exit with the specified status. 11078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 11088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 11098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectdie(status) 11108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int status; 11118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 11128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!doing_multilink || multilink_master) 11138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project print_link_stats(); 11148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project cleanup(); 11158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notify(exitnotify, status); 11168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project syslog(LOG_INFO, "Exit."); 11178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project exit(status); 11188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 11198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 11218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * cleanup - restore anything which needs to be restored before we exit 11228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 11238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* ARGSUSED */ 11248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 11258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectcleanup() 11268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 11278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sys_cleanup(); 11288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (fd_ppp >= 0) 11308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project the_channel->disestablish_ppp(devfd); 11318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (the_channel->cleanup) 11328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*the_channel->cleanup)(); 11338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project remove_pidfiles(); 11348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 11368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pppdb != NULL) 11378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project cleanup_db(); 11388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 11398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 11418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 11438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectprint_link_stats() 11448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 11458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 11468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Print connect time and statistics. 11478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 11488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (link_stats_valid) { 11498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int t = (link_connect_time + 5) / 6; /* 1/10ths of minutes */ 11508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project info("Connect time %d.%d minutes.", t/10, t%10); 11518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project info("Sent %u bytes, received %u bytes.", 11528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project link_stats.bytes_out, link_stats.bytes_in); 11538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project link_stats_valid = 0; 11548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 11558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 11568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 11588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * reset_link_stats - "reset" stats when link goes up. 11598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 11608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 11618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectreset_link_stats(u) 11628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int u; 11638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 11648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!get_ppp_stats(u, &old_link_stats)) 11658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 11668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project gettimeofday(&start_time, NULL); 11678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 11688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 11708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * update_link_stats - get stats at link termination. 11718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 11728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 11738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectupdate_link_stats(u) 11748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int u; 11758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 11768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct timeval now; 11778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char numbuf[32]; 11788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!get_ppp_stats(u, &link_stats) 11808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project || gettimeofday(&now, NULL) < 0) 11818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 11828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project link_connect_time = now.tv_sec - start_time.tv_sec; 11838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project link_stats_valid = 1; 11848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project link_stats.bytes_in -= old_link_stats.bytes_in; 11868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project link_stats.bytes_out -= old_link_stats.bytes_out; 11878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project link_stats.pkts_in -= old_link_stats.pkts_in; 11888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project link_stats.pkts_out -= old_link_stats.pkts_out; 11898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(numbuf, sizeof(numbuf), "%u", link_connect_time); 11918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_setenv("CONNECT_TIME", numbuf, 0); 11928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(numbuf, sizeof(numbuf), "%u", link_stats.bytes_out); 11938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_setenv("BYTES_SENT", numbuf, 0); 11948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(numbuf, sizeof(numbuf), "%u", link_stats.bytes_in); 11958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_setenv("BYTES_RCVD", numbuf, 0); 11968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 11978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 11998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstruct callout { 12008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct timeval c_time; /* time at which to call routine */ 12018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void *c_arg; /* argument to routine */ 12028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void (*c_func) __P((void *)); /* routine */ 12038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct callout *c_next; 12048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project}; 12058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic struct callout *callout = NULL; /* Callout list */ 12078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic struct timeval timenow; /* Current time */ 12088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 12108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * timeout - Schedule a timeout. 12118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 12128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 12138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projecttimeout(func, arg, secs, usecs) 12148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void (*func) __P((void *)); 12158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void *arg; 12168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int secs, usecs; 12178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 12188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct callout *newp, *p, **pp; 12198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 12218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Allocate timeout. 12228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 12238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if ((newp = (struct callout *) malloc(sizeof(struct callout))) == NULL) 12248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fatal("Out of memory in timeout()!"); 12258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project newp->c_arg = arg; 12268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project newp->c_func = func; 12278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project gettimeofday(&timenow, NULL); 12288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project newp->c_time.tv_sec = timenow.tv_sec + secs; 12298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project newp->c_time.tv_usec = timenow.tv_usec + usecs; 12308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (newp->c_time.tv_usec >= 1000000) { 12318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project newp->c_time.tv_sec += newp->c_time.tv_usec / 1000000; 12328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project newp->c_time.tv_usec %= 1000000; 12338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 12348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 12368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Find correct place and link it in. 12378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 12388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (pp = &callout; (p = *pp); pp = &p->c_next) 12398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (newp->c_time.tv_sec < p->c_time.tv_sec 12408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project || (newp->c_time.tv_sec == p->c_time.tv_sec 12418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project && newp->c_time.tv_usec < p->c_time.tv_usec)) 12428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 12438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project newp->c_next = p; 12448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project *pp = newp; 12458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 12468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 12498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * untimeout - Unschedule a timeout. 12508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 12518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 12528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectuntimeout(func, arg) 12538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void (*func) __P((void *)); 12548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void *arg; 12558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 12568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct callout **copp, *freep; 12578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 12598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Find first matching timeout and remove it from the list. 12608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 12618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (copp = &callout; (freep = *copp); copp = &freep->c_next) 12628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (freep->c_func == func && freep->c_arg == arg) { 12638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project *copp = freep->c_next; 12648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project free((char *) freep); 12658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 12668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 12678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 12688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 12718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * calltimeout - Call any timeout routines which are now due. 12728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 12738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 12748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectcalltimeout() 12758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 12768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct callout *p; 12778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project while (callout != NULL) { 12798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project p = callout; 12808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (gettimeofday(&timenow, NULL) < 0) 12828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fatal("Failed to get time of day: %m"); 12838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (!(p->c_time.tv_sec < timenow.tv_sec 12848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project || (p->c_time.tv_sec == timenow.tv_sec 12858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project && p->c_time.tv_usec <= timenow.tv_usec))) 12868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; /* no, it's not time yet */ 12878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project callout = p->c_next; 12898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*p->c_func)(p->c_arg); 12908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project free((char *) p); 12928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 12938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 12948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 12968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 12978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * timeleft - return the length of time until the next timeout is due. 12988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 12998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic struct timeval * 13008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projecttimeleft(tvp) 13018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct timeval *tvp; 13028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 13038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (callout == NULL) 13048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return NULL; 13058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project gettimeofday(&timenow, NULL); 13078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tvp->tv_sec = callout->c_time.tv_sec - timenow.tv_sec; 13088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tvp->tv_usec = callout->c_time.tv_usec - timenow.tv_usec; 13098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (tvp->tv_usec < 0) { 13108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tvp->tv_usec += 1000000; 13118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tvp->tv_sec -= 1; 13128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 13138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (tvp->tv_sec < 0) 13148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tvp->tv_sec = tvp->tv_usec = 0; 13158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return tvp; 13178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 13188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 13218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * kill_my_pg - send a signal to our process group, and ignore it ourselves. 13228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * We assume that sig is currently blocked. 13238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 13248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 13258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectkill_my_pg(sig) 13268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int sig; 13278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 13288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct sigaction act, oldact; 13298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigemptyset(&act.sa_mask); /* unnecessary in fact */ 13318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project act.sa_handler = SIG_IGN; 13328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project act.sa_flags = 0; 13338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project kill(0, sig); 13348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 13358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * The kill() above made the signal pending for us, as well as 13368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * the rest of our process group, but we don't want it delivered 13378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * to us. It is blocked at the moment. Setting it to be ignored 13388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * will cause the pending signal to be discarded. If we did the 13398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * kill() after setting the signal to be ignored, it is unspecified 13408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * (by POSIX) whether the signal is immediately discarded or left 13418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * pending, and in fact Linux would leave it pending, and so it 13428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * would be delivered after the current signal handler exits, 13438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * leading to an infinite loop. 13448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 13458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigaction(sig, &act, &oldact); 13468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sigaction(sig, &oldact, NULL); 13478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 13488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 13518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * hup - Catch SIGHUP signal. 13528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 13538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Indicates that the physical layer has been disconnected. 13548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * We don't rely on this indication; if the user has sent this 13558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * signal, we just take the link down. 13568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 13578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 13588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projecthup(sig) 13598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int sig; 13608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 13618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* can't log a message here, it can deadlock */ 13628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project got_sighup = 1; 13638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (conn_running) 13648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* Send the signal to the [dis]connector process(es) also */ 13658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project kill_my_pg(sig); 13668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notify(sigreceived, sig); 13678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (waiting) 13688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project siglongjmp(sigjmp, 1); 13698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 13708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 13738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * term - Catch SIGTERM signal and SIGINT signal (^C/del). 13748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 13758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Indicates that we should initiate a graceful disconnect and exit. 13768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 13778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/*ARGSUSED*/ 13788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 13798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectterm(sig) 13808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int sig; 13818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 13828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* can't log a message here, it can deadlock */ 13838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project got_sigterm = sig; 13848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (conn_running) 13858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* Send the signal to the [dis]connector process(es) also */ 13868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project kill_my_pg(sig); 13878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notify(sigreceived, sig); 13888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (waiting) 13898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project siglongjmp(sigjmp, 1); 13908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 13918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 13938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 13948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * chld - Catch SIGCHLD signal. 13958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Sets a flag so we will call reap_kids in the mainline. 13968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 13978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 13988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectchld(sig) 13998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int sig; 14008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 14018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project got_sigchld = 1; 14028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (waiting) 14038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project siglongjmp(sigjmp, 1); 14048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 14058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 14088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * toggle_debug - Catch SIGUSR1 signal. 14098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 14108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Toggle debug flag. 14118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 14128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/*ARGSUSED*/ 14138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 14148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projecttoggle_debug(sig) 14158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int sig; 14168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 14178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project debug = !debug; 14188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (debug) { 14198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project setlogmask(LOG_UPTO(LOG_DEBUG)); 14208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } else { 14218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project setlogmask(LOG_UPTO(LOG_WARNING)); 14228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 14238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 14248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 14278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * open_ccp - Catch SIGUSR2 signal. 14288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * 14298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Try to (re)negotiate compression. 14308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 14318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/*ARGSUSED*/ 14328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 14338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectopen_ccp(sig) 14348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int sig; 14358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 14368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project got_sigusr2 = 1; 14378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (waiting) 14388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project siglongjmp(sigjmp, 1); 14398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 14408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 14438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * bad_signal - We've caught a fatal signal. Clean up state and exit. 14448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 14458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 14468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectbad_signal(sig) 14478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int sig; 14488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 14498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project static int crashed = 0; 14508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (crashed) 14528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project _exit(127); 14538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project crashed = 1; 14548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project error("Fatal signal %d", sig); 14558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (conn_running) 14568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project kill_my_pg(SIGTERM); 14578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notify(sigreceived, sig); 14588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project die(127); 14598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 14608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 14628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * safe_fork - Create a child process. The child closes all the 14638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * file descriptors that we don't want to leak to a script. 14648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * The parent waits for the child to do this before returning. 14658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * This also arranges for the specified fds to be dup'd to 14668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * fds 0, 1, 2 in the child. 14678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 14688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectpid_t 14698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectsafe_fork(int infd, int outfd, int errfd) 14708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 14718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pid_t pid; 14728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int fd, pipefd[2]; 14738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char buf[1]; 14748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* make sure fds 0, 1, 2 are occupied (probably not necessary) */ 14768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project while ((fd = dup(fd_devnull)) >= 0) { 14778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (fd > 2) { 14788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(fd); 14798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 14808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 14818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 14828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pipe(pipefd) == -1) 14848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pipefd[0] = pipefd[1] = -1; 14858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pid = fork(); 14868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pid < 0) { 14878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project error("fork failed: %m"); 14888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return -1; 14898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 14908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pid > 0) { 14918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* parent */ 14928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(pipefd[1]); 14938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* this read() blocks until the close(pipefd[1]) below */ 14948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project complete_read(pipefd[0], buf, 1); 14958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(pipefd[0]); 14968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return pid; 14978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 14988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 14998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* Executing in the child */ 15008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project sys_close(); 15018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 15028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tdb_close(pppdb); 15038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 15048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* make sure infd, outfd and errfd won't get tromped on below */ 15068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (infd == 1 || infd == 2) 15078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project infd = dup(infd); 15088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (outfd == 0 || outfd == 2) 15098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project outfd = dup(outfd); 15108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (errfd == 0 || errfd == 1) 15118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project errfd = dup(errfd); 15128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* dup the in, out, err fds to 0, 1, 2 */ 15148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (infd != 0) 15158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dup2(infd, 0); 15168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (outfd != 1) 15178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dup2(outfd, 1); 15188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (errfd != 2) 15198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dup2(errfd, 2); 15208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project closelog(); 15228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (log_to_fd > 2) 15238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(log_to_fd); 15248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (the_channel->close) 15258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*the_channel->close)(); 15268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project else 15278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(devfd); /* some plugins don't have a close function */ 15288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(fd_ppp); 15298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(fd_devnull); 15308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (infd != 0) 15318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(infd); 15328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (outfd != 1) 15338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(outfd); 15348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (errfd != 2) 15358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(errfd); 15368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notify(fork_notifier, 0); 15388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(pipefd[0]); 15398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* this close unblocks the read() call above in the parent */ 15408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(pipefd[1]); 15418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return 0; 15438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 15448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 15468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * device_script - run a program to talk to the specified fds 15478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * (e.g. to run the connector or disconnector script). 15488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * stderr gets connected to the log fd or to the _PATH_CONNERRS file. 15498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 15508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectint 15518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectdevice_script(program, in, out, dont_wait) 15528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *program; 15538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int in, out; 15548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int dont_wait; 15558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 15568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int pid; 15578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int status = -1; 15588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int errfd; 15598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (log_to_fd >= 0) 15618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project errfd = log_to_fd; 15628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project else 15638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project errfd = open(_PATH_CONNERRS, O_WRONLY | O_APPEND | O_CREAT, 0600); 15648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project ++conn_running; 15668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pid = safe_fork(in, out, errfd); 15678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pid != 0 && log_to_fd < 0) 15698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project close(errfd); 15708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pid < 0) { 15728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project --conn_running; 15738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project error("Failed to create child process: %m"); 15748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return -1; 15758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 15768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pid != 0) { 15788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (dont_wait) { 15798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project record_child(pid, program, NULL, NULL); 15808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project status = 0; 15818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } else { 15828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project while (waitpid(pid, &status, 0) < 0) { 15838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (errno == EINTR) 15848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project continue; 15858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fatal("error waiting for (dis)connection process: %m"); 15868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 15878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project --conn_running; 15888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 15898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return (status == 0 ? 0 : -1); 15908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 15918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* here we are executing in the child */ 15938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 15948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project setgid(getgid()); 15958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project setuid(uid); 15968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (getuid() != uid) { 15978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fprintf(stderr, "pppd: setuid failed\n"); 15988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project exit(1); 15998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 16008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project execl("/system/bin/sh", "sh", "-c", program, NULL); 16018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project perror("pppd: could not exec /bin/sh"); 16028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project exit(99); 16038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* NOTREACHED */ 16048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 16058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 16088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * run-program - execute a program with given arguments, 16098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * but don't wait for it. 16108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * If the program can't be executed, logs an error unless 16118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * must_exist is 0 and the program file doesn't exist. 16128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Returns -1 if it couldn't fork, 0 if the file doesn't exist 16138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * or isn't an executable plain file, or the process ID of the child. 16148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * If done != NULL, (*done)(arg) will be called later (within 16158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * reap_kids) iff the return value is > 0. 16168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 16178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectpid_t 16188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectrun_program(prog, args, must_exist, done, arg) 16198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *prog; 16208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char **args; 16218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int must_exist; 16228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void (*done) __P((void *)); 16238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void *arg; 16248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 16258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int pid; 16268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct stat sbuf; 16278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* 16298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * First check if the file exists and is executable. 16308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * We don't use access() because that would use the 16318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * real user-id, which might not be root, and the script 16328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * might be accessible only to root. 16338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 16348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project errno = EINVAL; 16358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (stat(prog, &sbuf) < 0 || !S_ISREG(sbuf.st_mode) 16368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project || (sbuf.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH)) == 0) { 16378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (must_exist || errno != ENOENT) 16388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project warn("Can't execute %s: %m", prog); 16398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return 0; 16408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 16418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project pid = safe_fork(fd_devnull, fd_devnull, fd_devnull); 16438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pid == -1) { 16448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project error("Failed to create child process for %s: %m", prog); 16458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return -1; 16468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 16478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pid != 0) { 16488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (debug) 16498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbglog("Script %s started (pid %d)", prog, pid); 16508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project record_child(pid, prog, done, arg); 16518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return pid; 16528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 16538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* Leave the current location */ 16558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (void) setsid(); /* No controlling tty. */ 16568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (void) umask (S_IRWXG|S_IRWXO); 16578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (void) chdir ("/"); /* no current directory. */ 16588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project setuid(0); /* set real UID = root */ 16598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project setgid(getegid()); 16608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef BSD 16628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* Force the priority back to zero if pppd is running higher. */ 16638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (setpriority (PRIO_PROCESS, 0, 0) < 0) 16648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project warn("can't reset priority to 0: %m"); 16658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 16668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* run the program */ 16688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project execve(prog, args, script_env); 16698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (must_exist || errno != ENOENT) { 16708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* have to reopen the log, there's nowhere else 16718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for the message to go. */ 16728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project reopen_log(); 16738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project syslog(LOG_ERR, "Can't execute %s: %m", prog); 16748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project closelog(); 16758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 16768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project _exit(-1); 16778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 16788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 16818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * record_child - add a child process to the list for reap_kids 16828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * to use. 16838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 16848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 16858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectrecord_child(pid, prog, done, arg) 16868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int pid; 16878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *prog; 16888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void (*done) __P((void *)); 16898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void *arg; 16908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 16918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct subprocess *chp; 16928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project ++n_children; 16948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 16958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project chp = (struct subprocess *) malloc(sizeof(struct subprocess)); 16968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (chp == NULL) { 16978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project warn("losing track of %s process", prog); 16988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } else { 16998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project chp->pid = pid; 17008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project chp->prog = prog; 17018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project chp->done = done; 17028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project chp->arg = arg; 17038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project chp->next = children; 17048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project children = chp; 17058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 17068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 17078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 17088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 17098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * childwait_end - we got fed up waiting for the child processes to 17108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * exit, send them all a SIGTERM. 17118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 17128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 17138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectchildwait_end(arg) 17148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void *arg; 17158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 17168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct subprocess *chp; 17178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 17188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (chp = children; chp != NULL; chp = chp->next) { 17198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (debug) 17208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbglog("sending SIGTERM to process %d", chp->pid); 17218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project kill(chp->pid, SIGTERM); 17228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 17238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project childwait_done = 1; 17248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 17258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 17268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 17278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * reap_kids - get status from any dead child processes, 17288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * and log a message for abnormal terminations. 17298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 17308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic int 17318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectreap_kids() 17328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 17338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int pid, status; 17348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct subprocess *chp, **prevp; 17358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 17368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (n_children == 0) 17378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return 0; 17388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project while ((pid = waitpid(-1, &status, WNOHANG)) != -1 && pid != 0) { 17398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (prevp = &children; (chp = *prevp) != NULL; prevp = &chp->next) { 17408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (chp->pid == pid) { 17418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project --n_children; 17428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project *prevp = chp->next; 17438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 17448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 17458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 17468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (WIFSIGNALED(status)) { 17478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project warn("Child process %s (pid %d) terminated with signal %d", 17488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (chp? chp->prog: "??"), pid, WTERMSIG(status)); 17498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } else if (debug) 17508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbglog("Script %s finished (pid %d), status = 0x%x", 17518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (chp? chp->prog: "??"), pid, 17528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project WIFEXITED(status) ? WEXITSTATUS(status) : status); 17538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (chp && chp->done) 17548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*chp->done)(chp->arg); 17558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (chp) 17568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project free(chp); 17578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 17588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pid == -1) { 17598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (errno == ECHILD) 17608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return -1; 17618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (errno != EINTR) 17628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project error("Error waiting for child process: %m"); 17638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 17648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return 0; 17658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 17668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 17678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 17688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * add_notifier - add a new function to be called when something happens. 17698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 17708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 17718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectadd_notifier(notif, func, arg) 17728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct notifier **notif; 17738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notify_func func; 17748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void *arg; 17758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 17768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct notifier *np; 17778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 17788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project np = malloc(sizeof(struct notifier)); 17798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (np == 0) 17808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project novm("notifier struct"); 17818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project np->next = *notif; 17828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project np->func = func; 17838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project np->arg = arg; 17848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project *notif = np; 17858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 17868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 17878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 17888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * remove_notifier - remove a function from the list of things to 17898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * be called when something happens. 17908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 17918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 17928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectremove_notifier(notif, func, arg) 17938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct notifier **notif; 17948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notify_func func; 17958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project void *arg; 17968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 17978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct notifier *np; 17988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 17998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (; (np = *notif) != 0; notif = &np->next) { 18008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (np->func == func && np->arg == arg) { 18018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project *notif = np->next; 18028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project free(np); 18038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 18048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 18058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 18068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 18078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 18088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 18098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * notify - call a set of functions registered with add_notifier. 18108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 18118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 18128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectnotify(notif, val) 18138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct notifier *notif; 18148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int val; 18158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 18168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project struct notifier *np; 18178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 18188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project while ((np = notif) != 0) { 18198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project notif = np->next; 18208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project (*np->func)(np->arg, val); 18218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 18228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 18238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 18248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 18258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * novm - log an error message saying we ran out of memory, and die. 18268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 18278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 18288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectnovm(msg) 18298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *msg; 18308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 18318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project fatal("Virtual memory exhausted allocating %s\n", msg); 18328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 18338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 18348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 18358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * script_setenv - set an environment variable value to be used 18368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * for scripts that we run (e.g. ip-up, auth-up, etc.) 18378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 18388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 18398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectscript_setenv(var, value, iskey) 18408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *var, *value; 18418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int iskey; 18428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 18438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project size_t varl = strlen(var); 18448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project size_t vl = varl + strlen(value) + 2; 18458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int i; 18468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *p, *newstring; 18478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 18488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project newstring = (char *) malloc(vl+1); 18498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (newstring == 0) 18508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 18518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project *newstring++ = iskey; 18528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project slprintf(newstring, vl, "%s=%s", var, value); 18538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 18548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* check if this variable is already set */ 18558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (script_env != 0) { 18568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (i = 0; (p = script_env[i]) != 0; ++i) { 18578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (strncmp(p, var, varl) == 0 && p[varl] == '=') { 18588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 18598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (p[-1] && pppdb != NULL) 18608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project delete_db_key(p); 18618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 18628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project free(p-1); 18638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_env[i] = newstring; 18648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 18658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (iskey && pppdb != NULL) 18668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project add_db_key(newstring); 18678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project update_db_entry(); 18688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 18698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 18708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 18718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 18728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } else { 18738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* no space allocated for script env. ptrs. yet */ 18748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project i = 0; 18758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_env = (char **) malloc(16 * sizeof(char *)); 18768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (script_env == 0) 18778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 18788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project s_env_nalloc = 16; 18798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 18808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 18818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project /* reallocate script_env with more space if needed */ 18828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (i + 1 >= s_env_nalloc) { 18838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int new_n = i + 17; 18848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char **newenv = (char **) realloc((void *)script_env, 18858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project new_n * sizeof(char *)); 18868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (newenv == 0) 18878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 18888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_env = newenv; 18898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project s_env_nalloc = new_n; 18908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 18918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 18928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_env[i] = newstring; 18938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project script_env[i+1] = 0; 18948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 18958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 18968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pppdb != NULL) { 18978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (iskey) 18988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project add_db_key(newstring); 18998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project update_db_entry(); 19008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 19018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 19028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 19038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 19048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 19058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * script_unsetenv - remove a variable from the environment 19068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * for scripts. 19078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 19088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid 19098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectscript_unsetenv(var) 19108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *var; 19118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 19128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int vl = strlen(var); 19138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int i; 19148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *p; 19158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 19168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (script_env == 0) 19178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 19188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (i = 0; (p = script_env[i]) != 0; ++i) { 19198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (strncmp(p, var, vl) == 0 && p[vl] == '=') { 19208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 19218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (p[-1] && pppdb != NULL) 19228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project delete_db_key(p); 19238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 19248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project free(p-1); 19258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project while ((script_env[i] = script_env[i+1]) != 0) 19268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project ++i; 19278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project break; 19288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 19298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project } 19308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 19318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (pppdb != NULL) 19328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project update_db_entry(); 19338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 19348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 19358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 19368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 19378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Any arbitrary string used as a key for locking the database. 19388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * It doesn't matter what it is as long as all pppds use the same string. 19398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 19408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#define PPPD_LOCK_KEY "pppd lock" 19418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 19428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 19438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * lock_db - get an exclusive lock on the TDB database. 19448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * Used to ensure atomicity of various lookup/modify operations. 19458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 19468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid lock_db() 19478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 19488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 19498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project TDB_DATA key; 19508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 19518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dptr = PPPD_LOCK_KEY; 19528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dsize = strlen(key.dptr); 19538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tdb_chainlock(pppdb, key); 19548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 19558ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 19568ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 19578ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 19588ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * unlock_db - remove the exclusive lock obtained by lock_db. 19598ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 19608ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectvoid unlock_db() 19618ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 19628ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 19638ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project TDB_DATA key; 19648ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 19658ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dptr = PPPD_LOCK_KEY; 19668ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dsize = strlen(key.dptr); 19678ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tdb_chainunlock(pppdb, key); 19688ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif 19698ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 19708ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 19718ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#ifdef USE_TDB 19728ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 19738ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * update_db_entry - update our entry in the database. 19748ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 19758ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 19768ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectupdate_db_entry() 19778ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 19788ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project TDB_DATA key, dbuf; 19798ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int vlen, i; 19808ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *p, *q, *vbuf; 19818ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 19828ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (script_env == NULL) 19838ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project return; 19848ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project vlen = 0; 19858ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (i = 0; (p = script_env[i]) != 0; ++i) 19868ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project vlen += strlen(p) + 1; 19878ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project vbuf = malloc(vlen + 1); 19888ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (vbuf == 0) 19898ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project novm("database entry"); 19908ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project q = vbuf; 19918ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (i = 0; (p = script_env[i]) != 0; ++i) 19928ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project q += slprintf(q, vbuf + vlen - q, "%s;", p); 19938ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 19948ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dptr = db_key; 19958ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dsize = strlen(db_key); 19968ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbuf.dptr = vbuf; 19978ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbuf.dsize = vlen; 19988ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (tdb_store(pppdb, key, dbuf, TDB_REPLACE)) 19998ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project error("tdb_store failed: %s", tdb_error(pppdb)); 20008ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 20018ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (vbuf) 20028ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project free(vbuf); 20038ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 20048ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 20058ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 20068ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 20078ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * add_db_key - add a key that we can use to look up our database entry. 20088ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 20098ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 20108ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectadd_db_key(str) 20118ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project const char *str; 20128ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 20138ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project TDB_DATA key, dbuf; 20148ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 20158ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dptr = (char *) str; 20168ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dsize = strlen(str); 20178ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbuf.dptr = db_key; 20188ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project dbuf.dsize = strlen(db_key); 20198ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (tdb_store(pppdb, key, dbuf, TDB_REPLACE)) 20208ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project error("tdb_store key failed: %s", tdb_error(pppdb)); 20218ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 20228ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 20238ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 20248ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * delete_db_key - delete a key for looking up our database entry. 20258ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 20268ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 20278ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectdelete_db_key(str) 20288ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project const char *str; 20298ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 20308ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project TDB_DATA key; 20318ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 20328ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dptr = (char *) str; 20338ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dsize = strlen(str); 20348ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tdb_delete(pppdb, key); 20358ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 20368ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 20378ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project/* 20388ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project * cleanup_db - delete all the entries we put in the database. 20398ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project */ 20408ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectstatic void 20418ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Projectcleanup_db() 20428ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project{ 20438ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project TDB_DATA key; 20448ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project int i; 20458ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project char *p; 20468ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project 20478ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dptr = db_key; 20488ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project key.dsize = strlen(db_key); 20498ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project tdb_delete(pppdb, key); 20508ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project for (i = 0; (p = script_env[i]) != 0; ++i) 20518ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project if (p[-1]) 20528ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project delete_db_key(p); 20538ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project} 20548ad0dd2a5c5f23cd210aedba72a43e48026e7436The Android Open Source Project#endif /* USE_TDB */ 2055