services.c revision 4f6e8d7a00cbeda1e70cc15be9c4af1018bdad53
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdlib.h> 18#include <stdio.h> 19#include <unistd.h> 20#include <string.h> 21#include <errno.h> 22 23#include "sysdeps.h" 24 25#define TRACE_TAG TRACE_ADB 26#include "adb.h" 27#include "file_sync_service.h" 28 29#if ADB_HOST 30# ifndef HAVE_WINSOCK 31# include <netinet/in.h> 32# include <netdb.h> 33# endif 34#endif 35 36typedef struct stinfo stinfo; 37 38struct stinfo { 39 void (*func)(int fd, void *cookie); 40 int fd; 41 void *cookie; 42}; 43 44 45void *service_bootstrap_func(void *x) 46{ 47 stinfo *sti = x; 48 sti->func(sti->fd, sti->cookie); 49 free(sti); 50 return 0; 51} 52 53#if ADB_HOST 54ADB_MUTEX_DEFINE( dns_lock ); 55 56static void dns_service(int fd, void *cookie) 57{ 58 char *hostname = cookie; 59 struct hostent *hp; 60 unsigned zero = 0; 61 62 adb_mutex_lock(&dns_lock); 63 hp = gethostbyname(hostname); 64 if(hp == 0) { 65 writex(fd, &zero, 4); 66 } else { 67 writex(fd, hp->h_addr, 4); 68 } 69 adb_mutex_unlock(&dns_lock); 70 adb_close(fd); 71} 72#else 73extern int recovery_mode; 74 75static void recover_service(int s, void *cookie) 76{ 77 unsigned char buf[4096]; 78 unsigned count = (unsigned) cookie; 79 int fd; 80 81 fd = adb_creat("/tmp/update", 0644); 82 if(fd < 0) { 83 adb_close(s); 84 return; 85 } 86 87 while(count > 0) { 88 unsigned xfer = (count > 4096) ? 4096 : count; 89 if(readx(s, buf, xfer)) break; 90 if(writex(fd, buf, xfer)) break; 91 count -= xfer; 92 } 93 94 if(count == 0) { 95 writex(s, "OKAY", 4); 96 } else { 97 writex(s, "FAIL", 4); 98 } 99 adb_close(fd); 100 adb_close(s); 101 102 fd = adb_creat("/tmp/update.begin", 0644); 103 adb_close(fd); 104} 105 106#endif 107 108#if 0 109static void echo_service(int fd, void *cookie) 110{ 111 char buf[4096]; 112 int r; 113 char *p; 114 int c; 115 116 for(;;) { 117 r = read(fd, buf, 4096); 118 if(r == 0) goto done; 119 if(r < 0) { 120 if(errno == EINTR) continue; 121 else goto done; 122 } 123 124 c = r; 125 p = buf; 126 while(c > 0) { 127 r = write(fd, p, c); 128 if(r > 0) { 129 c -= r; 130 p += r; 131 continue; 132 } 133 if((r < 0) && (errno == EINTR)) continue; 134 goto done; 135 } 136 } 137done: 138 close(fd); 139} 140#endif 141 142static int create_service_thread(void (*func)(int, void *), void *cookie) 143{ 144 stinfo *sti; 145 adb_thread_t t; 146 int s[2]; 147 148 if(adb_socketpair(s)) { 149 printf("cannot create service socket pair\n"); 150 return -1; 151 } 152 153 sti = malloc(sizeof(stinfo)); 154 if(sti == 0) fatal("cannot allocate stinfo"); 155 sti->func = func; 156 sti->cookie = cookie; 157 sti->fd = s[1]; 158 159 if(adb_thread_create( &t, service_bootstrap_func, sti)){ 160 free(sti); 161 adb_close(s[0]); 162 adb_close(s[1]); 163 printf("cannot create service thread\n"); 164 return -1; 165 } 166 167 D("service thread started, %d:%d\n",s[0], s[1]); 168 return s[0]; 169} 170 171static int create_subprocess(const char *cmd, const char *arg0, const char *arg1) 172{ 173#ifdef HAVE_WIN32_PROC 174 fprintf(stderr, "error: create_subprocess not implemented on Win32 (%s %s %s)\n", cmd, arg0, arg1); 175 return -1; 176#else /* !HAVE_WIN32_PROC */ 177 char *devname; 178 int ptm; 179 pid_t pid; 180 181 ptm = unix_open("/dev/ptmx", O_RDWR); // | O_NOCTTY); 182 if(ptm < 0){ 183 printf("[ cannot open /dev/ptmx - %s ]\n",strerror(errno)); 184 return -1; 185 } 186 fcntl(ptm, F_SETFD, FD_CLOEXEC); 187 188 if(grantpt(ptm) || unlockpt(ptm) || 189 ((devname = (char*) ptsname(ptm)) == 0)){ 190 printf("[ trouble with /dev/ptmx - %s ]\n", strerror(errno)); 191 return -1; 192 } 193 194 pid = fork(); 195 if(pid < 0) { 196 printf("- fork failed: %s -\n", strerror(errno)); 197 return -1; 198 } 199 200 if(pid == 0){ 201 int pts; 202 203 setsid(); 204 205 pts = unix_open(devname, O_RDWR); 206 if(pts < 0) exit(-1); 207 208 dup2(pts, 0); 209 dup2(pts, 1); 210 dup2(pts, 2); 211 212 adb_close(ptm); 213 214 execl(cmd, cmd, arg0, arg1, NULL); 215 fprintf(stderr, "- exec '%s' failed: %s (%d) -\n", 216 cmd, strerror(errno), errno); 217 exit(-1); 218 } else { 219 return ptm; 220 } 221#endif /* !HAVE_WIN32_PROC */ 222} 223 224#if ADB_HOST 225#define SHELL_COMMAND "/bin/sh" 226#else 227#define SHELL_COMMAND "/system/bin/sh" 228#endif 229 230int service_to_fd(const char *name) 231{ 232 int ret = -1; 233 234 if(!strncmp(name, "tcp:", 4)) { 235 int port = atoi(name + 4); 236 name = strchr(name + 4, ':'); 237 if(name == 0) { 238 ret = socket_loopback_client(port, SOCK_STREAM); 239 if (ret >= 0) 240 disable_tcp_nagle(ret); 241 } else { 242#if ADB_HOST 243 adb_mutex_lock(&dns_lock); 244 ret = socket_network_client(name + 1, port, SOCK_STREAM); 245 adb_mutex_unlock(&dns_lock); 246#else 247 return -1; 248#endif 249 } 250#ifndef HAVE_WINSOCK /* winsock doesn't implement unix domain sockets */ 251 } else if(!strncmp(name, "local:", 6)) { 252 ret = socket_local_client(name + 6, 253 ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM); 254 } else if(!strncmp(name, "localreserved:", 14)) { 255 ret = socket_local_client(name + 14, 256 ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM); 257 } else if(!strncmp(name, "localabstract:", 14)) { 258 ret = socket_local_client(name + 14, 259 ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); 260 } else if(!strncmp(name, "localfilesystem:", 16)) { 261 ret = socket_local_client(name + 16, 262 ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM); 263#endif 264#if ADB_HOST 265 } else if(!strncmp("dns:", name, 4)){ 266 char *n = strdup(name + 4); 267 if(n == 0) return -1; 268 ret = create_service_thread(dns_service, n); 269#else /* !ADB_HOST */ 270 } else if(!strncmp("dev:", name, 4)) { 271 ret = unix_open(name + 4, O_RDWR); 272 } else if(!strncmp(name, "framebuffer:", 12)) { 273 ret = create_service_thread(framebuffer_service, 0); 274 } else if(recovery_mode && !strncmp(name, "recover:", 8)) { 275 ret = create_service_thread(recover_service, (void*) atoi(name + 8)); 276 } else if (!strncmp(name, "jdwp:", 5)) { 277 ret = create_jdwp_connection_fd(atoi(name+5)); 278 } else if (!strncmp(name, "log:", 4)) { 279 ret = create_service_thread(log_service, get_log_file_path(name + 4)); 280#endif 281 } else if(!HOST && !strncmp(name, "shell:", 6)) { 282 if(name[6]) { 283 ret = create_subprocess(SHELL_COMMAND, "-c", name + 6); 284 } else { 285 ret = create_subprocess(SHELL_COMMAND, "-", 0); 286 } 287#if !ADB_HOST 288 } else if(!strncmp(name, "sync:", 5)) { 289 ret = create_service_thread(file_sync_service, NULL); 290 } else if(!strncmp(name, "remount:", 8)) { 291 ret = create_service_thread(remount_service, NULL); 292#endif 293#if 0 294 } else if(!strncmp(name, "echo:", 5)){ 295 ret = create_service_thread(echo_service, 0); 296#endif 297 } 298 if (ret >= 0) { 299 close_on_exec(ret); 300 } 301 return ret; 302} 303 304#if ADB_HOST 305struct state_info { 306 transport_type transport; 307 char* serial; 308 int state; 309}; 310 311static void wait_for_state(int fd, void* cookie) 312{ 313 struct state_info* sinfo = cookie; 314 char* err = "unknown error"; 315 316 D("wait_for_state %d\n", sinfo->state); 317 318 atransport *t = acquire_one_transport(sinfo->state, sinfo->transport, sinfo->serial, &err); 319 if(t != 0) { 320 writex(fd, "OKAY", 4); 321 } else { 322 sendfailmsg(fd, err); 323 } 324 325 if (sinfo->serial) 326 free(sinfo->serial); 327 free(sinfo); 328 adb_close(fd); 329 D("wait_for_state is done\n"); 330} 331#endif 332 333#if ADB_HOST 334asocket* host_service_to_socket(const char* name, const char *serial) 335{ 336 if (!strcmp(name,"track-devices")) { 337 return create_device_tracker(); 338 } else if (!strncmp(name, "wait-for-", strlen("wait-for-"))) { 339 struct state_info* sinfo = malloc(sizeof(struct state_info)); 340 341 if (serial) 342 sinfo->serial = strdup(serial); 343 else 344 sinfo->serial = NULL; 345 346 name += strlen("wait-for-"); 347 348 if (!strncmp(name, "bootloader", strlen("bootloader"))) { 349 sinfo->transport = kTransportUsb; 350 sinfo->state = CS_BOOTLOADER; 351 } else if (!strncmp(name, "local", strlen("local"))) { 352 sinfo->transport = kTransportLocal; 353 sinfo->state = CS_DEVICE; 354 } else if (!strncmp(name, "usb", strlen("usb"))) { 355 sinfo->transport = kTransportUsb; 356 sinfo->state = CS_DEVICE; 357 } else if (!strncmp(name, "any", strlen("any"))) { 358 sinfo->transport = kTransportAny; 359 sinfo->state = CS_DEVICE; 360 } else { 361 free(sinfo); 362 return NULL; 363 } 364 365 int fd = create_service_thread(wait_for_state, sinfo); 366 return create_local_socket(fd); 367 } 368 return NULL; 369} 370#endif /* ADB_HOST */ 371