iprule.c revision 351efcde4e62967362a10b29f3b701cfecd7cdfc
1aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger/* 2aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * iprule.c "ip rule". 3aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * 4aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * This program is free software; you can redistribute it and/or 5aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * modify it under the terms of the GNU General Public License 6aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * as published by the Free Software Foundation; either version 7aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * 2 of the License, or (at your option) any later version. 8aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * 9aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> 10aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * 11aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * 12aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * Changes: 13aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * 14aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses 15aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger */ 16aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 17aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <stdio.h> 18aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <stdlib.h> 19aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <unistd.h> 20aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <syslog.h> 21aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <fcntl.h> 22aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <sys/socket.h> 23aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <netinet/in.h> 24aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <netinet/ip.h> 25aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <arpa/inet.h> 26aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <string.h> 27aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 28aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include "rt_names.h" 29aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include "utils.h" 30aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 31351efcde4e62967362a10b29f3b701cfecd7cdfcshemmingerextern struct rtnl_handle rth; 32351efcde4e62967362a10b29f3b701cfecd7cdfcshemminger 33aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerstatic void usage(void) __attribute__((noreturn)); 34aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 35aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerstatic void usage(void) 36aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger{ 3750772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger fprintf(stderr, "Usage: ip rule [ list | add | del | flush ] SELECTOR ACTION\n"); 38aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "SELECTOR := [ from PREFIX ] [ to PREFIX ] [ tos TOS ] [ fwmark FWMARK ]\n"); 39aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, " [ dev STRING ] [ pref NUMBER ]\n"); 40526afe400887be9b3168ef3c92c6b6ec3e184f5fnet[shemminger]!shemminger fprintf(stderr, "ACTION := [ table TABLE_ID ]\n"); 41aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, " [ prohibit | reject | unreachable ]\n"); 42aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, " [ realms [SRCREALM/]DSTREALM ]\n"); 43aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "TABLE_ID := [ local | main | default | NUMBER ]\n"); 44aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger exit(-1); 45aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger} 46aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 4750772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemmingerstatic int print_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, 486dc9f016347441fbf94cf851c054b0f45ba32c1cosdl.net!shemminger void *arg) 49aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger{ 50aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger FILE *fp = (FILE*)arg; 51aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct rtmsg *r = NLMSG_DATA(n); 52aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger int len = n->nlmsg_len; 53aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger int host_len = -1; 54aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct rtattr * tb[RTA_MAX+1]; 55aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger char abuf[256]; 56aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger SPRINT_BUF(b1); 57aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 58aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (n->nlmsg_type != RTM_NEWRULE) 59aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 0; 60aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 61aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger len -= NLMSG_LENGTH(sizeof(*r)); 62aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (len < 0) 63aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 64aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 65aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len); 66aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 67aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (r->rtm_family == AF_INET) 68aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger host_len = 32; 69aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger else if (r->rtm_family == AF_INET6) 70aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger host_len = 128; 71aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger else if (r->rtm_family == AF_DECnet) 72aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger host_len = 16; 73aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger else if (r->rtm_family == AF_IPX) 74aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger host_len = 80; 75aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 76aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (tb[RTA_PRIORITY]) 77aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "%u:\t", *(unsigned*)RTA_DATA(tb[RTA_PRIORITY])); 78aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger else 79aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "0:\t"); 80aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 81aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (tb[RTA_SRC]) { 82aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (r->rtm_src_len != host_len) { 83aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family, 84aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger RTA_PAYLOAD(tb[RTA_SRC]), 85aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger RTA_DATA(tb[RTA_SRC]), 86aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger abuf, sizeof(abuf)), 87aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger r->rtm_src_len 88aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger ); 89aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else { 90aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "from %s ", format_host(r->rtm_family, 91aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger RTA_PAYLOAD(tb[RTA_SRC]), 92aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger RTA_DATA(tb[RTA_SRC]), 93aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger abuf, sizeof(abuf)) 94aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger ); 95aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 96aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (r->rtm_src_len) { 97aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "from 0/%d ", r->rtm_src_len); 98aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else { 99aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "from all "); 100aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 101aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 102aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (tb[RTA_DST]) { 103aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (r->rtm_dst_len != host_len) { 104aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "to %s/%u ", rt_addr_n2a(r->rtm_family, 105aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger RTA_PAYLOAD(tb[RTA_DST]), 106aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger RTA_DATA(tb[RTA_DST]), 107aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger abuf, sizeof(abuf)), 108aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger r->rtm_dst_len 109aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger ); 110aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else { 111aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "to %s ", format_host(r->rtm_family, 112aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger RTA_PAYLOAD(tb[RTA_DST]), 113aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger RTA_DATA(tb[RTA_DST]), 114aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger abuf, sizeof(abuf))); 115aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 116aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (r->rtm_dst_len) { 117aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "to 0/%d ", r->rtm_dst_len); 118aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 119aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 120aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (r->rtm_tos) { 121aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger SPRINT_BUF(b1); 122aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1))); 123aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 124aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (tb[RTA_PROTOINFO]) { 1254fb466f9446d42fe3591520bf1b1e9ab7ee54f71org[shemminger]!shemminger fprintf(fp, "fwmark %#x ", *(__u32*)RTA_DATA(tb[RTA_PROTOINFO])); 126aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 127aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 128aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (tb[RTA_IIF]) { 129aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "iif %s ", (char*)RTA_DATA(tb[RTA_IIF])); 130aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 131aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 132aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (r->rtm_table) 133aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "lookup %s ", rtnl_rttable_n2a(r->rtm_table, b1, sizeof(b1))); 134aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 135aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (tb[RTA_FLOW]) { 136aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger __u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]); 137aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger __u32 from = to>>16; 138aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger to &= 0xFFFF; 139aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (from) { 140aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "realms %s/", 141aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger rtnl_rtrealm_n2a(from, b1, sizeof(b1))); 142aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 143aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "%s ", 144aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger rtnl_rtrealm_n2a(to, b1, sizeof(b1))); 145aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 146aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 147aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (r->rtm_type == RTN_NAT) { 148aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (tb[RTA_GATEWAY]) { 149aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "map-to %s ", 150aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger format_host(r->rtm_family, 151aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger RTA_PAYLOAD(tb[RTA_GATEWAY]), 152aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger RTA_DATA(tb[RTA_GATEWAY]), 153aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger abuf, sizeof(abuf))); 154aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else 155aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "masquerade"); 156aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (r->rtm_type != RTN_UNICAST) 157aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "%s", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1))); 158aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 159aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(fp, "\n"); 160aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fflush(fp); 161aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 0; 162aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger} 163aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 16450772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemmingerstatic int iprule_list(int argc, char **argv) 165aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger{ 166aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger int af = preferred_family; 167aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 168aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (af == AF_UNSPEC) 169aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger af = AF_INET; 170aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 171aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (argc > 0) { 1720284dcde32ccb3181c04f449ea41a0502fb91f07net[shemminger]!shemminger fprintf(stderr, "\"ip rule show\" does not take any arguments.\n"); 173aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return -1; 174aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 175aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 176aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (rtnl_wilddump_request(&rth, af, RTM_GETRULE) < 0) { 177aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger perror("Cannot send dump request"); 178aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 1; 179aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 180aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 181aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (rtnl_dump_filter(&rth, print_rule, stdout, NULL, NULL) < 0) { 182aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "Dump terminated\n"); 183aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 1; 184aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 185aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 186aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 0; 187aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger} 188aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 189aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 19050772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemmingerstatic int iprule_modify(int cmd, int argc, char **argv) 191aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger{ 192aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger int table_ok = 0; 193aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct { 194aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct nlmsghdr n; 195aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct rtmsg r; 196aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger char buf[1024]; 197aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } req; 198aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 199aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger memset(&req, 0, sizeof(req)); 200aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 201aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.n.nlmsg_type = cmd; 202aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); 203aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.n.nlmsg_flags = NLM_F_REQUEST; 204aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_family = preferred_family; 205aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_protocol = RTPROT_BOOT; 206aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_scope = RT_SCOPE_UNIVERSE; 207aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_table = 0; 208aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_type = RTN_UNSPEC; 209aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 210aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (cmd == RTM_NEWRULE) { 211aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.n.nlmsg_flags |= NLM_F_CREATE|NLM_F_EXCL; 212aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_type = RTN_UNICAST; 213aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 214aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 215aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger while (argc > 0) { 216aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (strcmp(*argv, "from") == 0) { 217aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger inet_prefix dst; 218aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 219aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger get_prefix(&dst, *argv, req.r.rtm_family); 220aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_src_len = dst.bitlen; 221aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger addattr_l(&req.n, sizeof(req), RTA_SRC, &dst.data, dst.bytelen); 222aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "to") == 0) { 223aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger inet_prefix dst; 224aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 225aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger get_prefix(&dst, *argv, req.r.rtm_family); 226aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_dst_len = dst.bitlen; 227aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen); 228aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (matches(*argv, "preference") == 0 || 229aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger matches(*argv, "order") == 0 || 230aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger matches(*argv, "priority") == 0) { 231aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger __u32 pref; 232aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 233aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (get_u32(&pref, *argv, 0)) 234aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger invarg("preference value is invalid\n", *argv); 235aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger addattr32(&req.n, sizeof(req), RTA_PRIORITY, pref); 236aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "tos") == 0) { 237aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger __u32 tos; 238aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 239aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (rtnl_dsfield_a2n(&tos, *argv)) 240aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger invarg("TOS value is invalid\n", *argv); 241aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_tos = tos; 242aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "fwmark") == 0) { 243aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger __u32 fwmark; 244aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 2454fb466f9446d42fe3591520bf1b1e9ab7ee54f71org[shemminger]!shemminger if (get_u32(&fwmark, *argv, 0)) 246aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger invarg("fwmark value is invalid\n", *argv); 247aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger addattr32(&req.n, sizeof(req), RTA_PROTOINFO, fwmark); 248aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (matches(*argv, "realms") == 0) { 249aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger __u32 realm; 250aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 251aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (get_rt_realms(&realm, *argv)) 252aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger invarg("invalid realms\n", *argv); 253aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger addattr32(&req.n, sizeof(req), RTA_FLOW, realm); 254aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (matches(*argv, "table") == 0 || 255aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger strcmp(*argv, "lookup") == 0) { 256f332d169246447bd5e258ac03d5ee840a70adb1eshemminger __u32 tid; 257aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 258aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (rtnl_rttable_a2n(&tid, *argv)) 259aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger invarg("invalid table ID\n", *argv); 260aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_table = tid; 261aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger table_ok = 1; 262aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "dev") == 0 || 263aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger strcmp(*argv, "iif") == 0) { 264aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 265aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger addattr_l(&req.n, sizeof(req), RTA_IIF, *argv, strlen(*argv)+1); 266aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (strcmp(*argv, "nat") == 0 || 267aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger matches(*argv, "map-to") == 0) { 268aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 269526afe400887be9b3168ef3c92c6b6ec3e184f5fnet[shemminger]!shemminger fprintf(stderr, "Warning: route NAT is deprecated\n"); 270aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger addattr32(&req.n, sizeof(req), RTA_GATEWAY, get_addr32(*argv)); 271aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_type = RTN_NAT; 272aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else { 273aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger int type; 274aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 275aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (strcmp(*argv, "type") == 0) { 276aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger NEXT_ARG(); 277aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 278aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (matches(*argv, "help") == 0) 279aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger usage(); 280aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (rtnl_rtntype_a2n(&type, *argv)) 281aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger invarg("Failed to parse rule type", *argv); 282aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_type = type; 283aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 284aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger argc--; 285aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger argv++; 286aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } 287aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 288aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (req.r.rtm_family == AF_UNSPEC) 289aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_family = AF_INET; 290aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 291aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (!table_ok && cmd == RTM_NEWRULE) 292aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger req.r.rtm_table = RT_TABLE_MAIN; 293aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 294aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0) 295aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 2; 296aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 297aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return 0; 298aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger} 299aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 30050772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 30150772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemmingerstatic int flush_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) 30250772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger{ 30350772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger struct rtmsg *r = NLMSG_DATA(n); 30450772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger int len = n->nlmsg_len; 30550772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger struct rtattr * tb[RTA_MAX+1]; 30650772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 30750772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger len -= NLMSG_LENGTH(sizeof(*r)); 30850772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger if (len < 0) 30950772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger return -1; 31050772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 31150772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len); 31250772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 31350772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger if (tb[RTA_PRIORITY]) { 31450772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger n->nlmsg_type = RTM_DELRULE; 31550772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger n->nlmsg_flags = NLM_F_REQUEST; 31650772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 31750772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger if (rtnl_talk(&rth, n, 0, 0, NULL, NULL, NULL) < 0) 31850772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger return -2; 31950772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger } 32050772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 32150772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger return 0; 32250772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger} 32350772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 32450772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemmingerstatic int iprule_flush(int argc, char **argv) 32550772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger{ 32650772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger int af = preferred_family; 32750772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 32850772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger if (af == AF_UNSPEC) 32950772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger af = AF_INET; 33050772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 33150772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger if (argc > 0) { 332660818498d0f5a3f52c05355a3e82c23f670fcc1shemminger fprintf(stderr, "\"ip rule flush\" does not allow arguments\n"); 33350772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger return -1; 33450772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger } 33550772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 33650772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger if (rtnl_wilddump_request(&rth, af, RTM_GETRULE) < 0) { 33750772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger perror("Cannot send dump request"); 33850772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger return 1; 33950772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger } 34050772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 34150772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger if (rtnl_dump_filter(&rth, flush_rule, NULL, NULL, NULL) < 0) { 34250772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger fprintf(stderr, "Flush terminated\n"); 34350772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger return 1; 34450772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger } 34550772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 34650772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger return 0; 34750772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger} 34850772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger 349aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerint do_iprule(int argc, char **argv) 350aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger{ 351aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger if (argc < 1) { 352aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return iprule_list(0, NULL); 353aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (matches(argv[0], "list") == 0 || 354aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger matches(argv[0], "lst") == 0 || 355aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger matches(argv[0], "show") == 0) { 356aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return iprule_list(argc-1, argv+1); 357aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (matches(argv[0], "add") == 0) { 358aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return iprule_modify(RTM_NEWRULE, argc-1, argv+1); 359aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (matches(argv[0], "delete") == 0) { 360aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger return iprule_modify(RTM_DELRULE, argc-1, argv+1); 36150772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger } else if (matches(argv[0], "flush") == 0) { 36250772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger return iprule_flush(argc-1, argv+1); 363aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger } else if (matches(argv[0], "help") == 0) 364aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger usage(); 365aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 366aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger fprintf(stderr, "Command \"%s\" is unknown, try \"ip rule help\".\n", *argv); 367aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger exit(-1); 368aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger} 369aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 370