jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 1 | /* |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 2 | * OpenGGSN - Gateway GPRS Support Node |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 3 | * Copyright (C) 2002, 2003, 2004 Mondru AB. |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 4 | * |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 5 | * The contents of this file may be used under the terms of the GNU |
| 6 | * General Public License Version 2, provided that the above copyright |
| 7 | * notice and this permission notice is included in all copies or |
| 8 | * substantial portions of the software. |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 9 | * |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 10 | */ |
| 11 | |
| 12 | /* ggsn.c |
| 13 | * |
| 14 | */ |
| 15 | |
| 16 | #ifdef __linux__ |
| 17 | #define _GNU_SOURCE 1 /* strdup() prototype, broken arpa/inet.h */ |
| 18 | #endif |
| 19 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 20 | #include "../config.h" |
| 21 | |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 22 | #include <osmocom/core/application.h> |
| 23 | |
jjako | 0fe0df0 | 2004-09-17 11:30:40 +0000 | [diff] [blame] | 24 | #ifdef HAVE_STDINT_H |
| 25 | #include <stdint.h> |
| 26 | #endif |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 27 | |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 28 | #include <ctype.h> |
| 29 | #include <netdb.h> |
| 30 | #include <signal.h> |
| 31 | #include <stdio.h> |
| 32 | #include <string.h> |
| 33 | #include <stdlib.h> |
| 34 | #include <sys/types.h> |
| 35 | #include <sys/socket.h> |
| 36 | #include <netinet/in.h> |
| 37 | #include <arpa/inet.h> |
| 38 | #include <sys/wait.h> |
| 39 | #include <sys/stat.h> |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 40 | #include <fcntl.h> |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 41 | #include <unistd.h> |
Max | 727417d | 2016-08-02 17:10:38 +0200 | [diff] [blame] | 42 | #include <inttypes.h> |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 43 | #include <sys/socket.h> |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 44 | #include <sys/ioctl.h> |
| 45 | #include <net/if.h> |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 46 | |
| 47 | #include <errno.h> |
| 48 | |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 49 | #include <time.h> |
| 50 | |
Max | 727417d | 2016-08-02 17:10:38 +0200 | [diff] [blame] | 51 | #include <osmocom/core/select.h> |
| 52 | #include <osmocom/ctrl/control_if.h> |
| 53 | #include <osmocom/ctrl/control_cmd.h> |
| 54 | #include <osmocom/ctrl/ports.h> |
| 55 | |
Emmanuel Bretelle | 2a10368 | 2010-09-07 17:01:20 +0200 | [diff] [blame] | 56 | #include "../lib/tun.h" |
| 57 | #include "../lib/ippool.h" |
| 58 | #include "../lib/syserr.h" |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 59 | #include "../gtp/pdp.h" |
| 60 | #include "../gtp/gtp.h" |
| 61 | #include "cmdline.h" |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 62 | #include "gtp-kernel.h" |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 63 | |
Harald Welte | c3dcba0 | 2010-05-04 11:02:54 +0200 | [diff] [blame] | 64 | int end = 0; |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 65 | int maxfd = 0; /* For select() */ |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 66 | |
| 67 | struct in_addr listen_; |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 68 | struct in_addr netaddr, destaddr, net, mask; /* Network interface */ |
| 69 | struct in_addr dns1, dns2; /* PCO DNS address */ |
| 70 | char *ipup, *ipdown; /* Filename of scripts */ |
| 71 | int debug; /* Print debug output */ |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 72 | struct ul255_t pco; |
| 73 | struct ul255_t qos; |
| 74 | struct ul255_t apn; |
| 75 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 76 | struct gsn_t *gsn; /* GSN instance */ |
| 77 | struct tun_t *tun; /* TUN instance */ |
| 78 | struct ippool_t *ippool; /* Pool of IP addresses */ |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 79 | |
Harald Welte | c3dcba0 | 2010-05-04 11:02:54 +0200 | [diff] [blame] | 80 | /* To exit gracefully. Used with GCC compilation flag -pg and gprof */ |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 81 | void signal_handler(int s) |
| 82 | { |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 83 | DEBUGP(DGGSN, "Received signal %d, exiting.\n", s); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 84 | end = 1; |
Harald Welte | c3dcba0 | 2010-05-04 11:02:54 +0200 | [diff] [blame] | 85 | } |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 86 | |
| 87 | /* Used to write process ID to file. Assume someone else will delete */ |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 88 | void log_pid(char *pidfile) |
| 89 | { |
| 90 | FILE *file; |
| 91 | mode_t oldmask; |
| 92 | |
| 93 | oldmask = umask(022); |
| 94 | file = fopen(pidfile, "w"); |
| 95 | umask(oldmask); |
| 96 | if (!file) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 97 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 98 | "Failed to create process ID file: %s!", pidfile); |
| 99 | return; |
| 100 | } |
| 101 | fprintf(file, "%d\n", (int)getpid()); |
| 102 | fclose(file); |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 103 | } |
| 104 | |
jjako | bd937b7 | 2004-12-30 16:22:42 +0000 | [diff] [blame] | 105 | #if defined(__sun__) |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 106 | int daemon(int nochdir, int noclose) |
| 107 | { |
| 108 | int fd; |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 109 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 110 | switch (fork()) { |
| 111 | case -1: |
| 112 | return (-1); |
| 113 | case 0: |
| 114 | break; |
| 115 | default: |
| 116 | _exit(0); |
| 117 | } |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 118 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 119 | if (setsid() == -1) |
| 120 | return (-1); |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 121 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 122 | if (!nochdir) |
| 123 | chdir("/"); |
| 124 | |
| 125 | if (!noclose && (fd = open("/dev/null", O_RDWR, 0)) != -1) { |
| 126 | dup2(fd, STDIN_FILENO); |
| 127 | dup2(fd, STDOUT_FILENO); |
| 128 | dup2(fd, STDERR_FILENO); |
| 129 | if (fd > 2) |
| 130 | close(fd); |
| 131 | } |
| 132 | return (0); |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 133 | } |
| 134 | #endif |
| 135 | |
Max | 3142d8d | 2017-05-04 17:45:10 +0200 | [diff] [blame] | 136 | static bool send_trap(const struct gsn_t *gsn, const struct pdp_t *pdp, const struct ippoolm_t *member, const char *var) |
| 137 | { |
| 138 | char val[NAMESIZE]; |
| 139 | |
| 140 | snprintf(val, sizeof(val), "%" PRIu64 ",%s", pdp->imsi, inet_ntoa(member->addr)); |
| 141 | |
| 142 | if (ctrl_cmd_send_trap(gsn->ctrl, var, val) < 0) { |
| 143 | LOGP(DGGSN, LOGL_ERROR, "Failed to create and send TRAP for IMSI %" PRIu64 " [%s].\n", pdp->imsi, var); |
| 144 | return false; |
| 145 | } |
| 146 | return true; |
| 147 | } |
| 148 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 149 | int delete_context(struct pdp_t *pdp) |
| 150 | { |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 151 | DEBUGP(DGGSN, "Deleting PDP context\n"); |
Max | 727417d | 2016-08-02 17:10:38 +0200 | [diff] [blame] | 152 | struct ippoolm_t *member = pdp->peer; |
Max | dbd7024 | 2016-10-14 13:38:05 +0200 | [diff] [blame] | 153 | |
| 154 | if (pdp->peer) { |
Max | 3142d8d | 2017-05-04 17:45:10 +0200 | [diff] [blame] | 155 | send_trap(gsn, pdp, member, "imsi-rem-ip"); /* TRAP with IP removal */ |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 156 | ippool_freeip(ippool, (struct ippoolm_t *)pdp->peer); |
Max | dbd7024 | 2016-10-14 13:38:05 +0200 | [diff] [blame] | 157 | } else |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 158 | SYS_ERR(DGGSN, LOGL_ERROR, 0, "Peer not defined!"); |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 159 | |
| 160 | if (gtp_kernel_tunnel_del(pdp)) { |
| 161 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
| 162 | "Cannot delete tunnel from kernel: %s\n", |
| 163 | strerror(errno)); |
| 164 | } |
| 165 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 166 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 167 | } |
| 168 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 169 | int create_context_ind(struct pdp_t *pdp) |
| 170 | { |
| 171 | struct in_addr addr; |
| 172 | struct ippoolm_t *member; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 173 | |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 174 | DEBUGP(DGGSN, "Received create PDP context request\n"); |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 175 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 176 | pdp->eua.l = 0; /* TODO: Indicates dynamic IP */ |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 177 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 178 | memcpy(pdp->qos_neg0, pdp->qos_req0, sizeof(pdp->qos_req0)); |
| 179 | memcpy(&pdp->pco_neg, &pco, sizeof(pdp->pco_neg)); |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 180 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 181 | memcpy(pdp->qos_neg.v, pdp->qos_req.v, pdp->qos_req.l); /* TODO */ |
| 182 | pdp->qos_neg.l = pdp->qos_req.l; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 183 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 184 | if (pdp_euaton(&pdp->eua, &addr)) { |
| 185 | addr.s_addr = 0; /* Request dynamic */ |
| 186 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 187 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 188 | if (ippool_newip(ippool, &member, &addr, 0)) { |
| 189 | gtp_create_context_resp(gsn, pdp, GTPCAUSE_NO_RESOURCES); |
| 190 | return 0; /* Allready in use, or no more available */ |
| 191 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 192 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 193 | pdp_ntoeua(&member->addr, &pdp->eua); |
| 194 | pdp->peer = member; |
| 195 | pdp->ipif = tun; /* TODO */ |
| 196 | member->peer = pdp; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 197 | |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 198 | if (gtp_kernel_tunnel_add(pdp) < 0) { |
Andreas Schultz | c5fbf9b | 2015-11-17 12:22:43 +0100 | [diff] [blame] | 199 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 200 | "Cannot add tunnel to kernel: %s\n", strerror(errno)); |
| 201 | } |
Max | 3142d8d | 2017-05-04 17:45:10 +0200 | [diff] [blame] | 202 | |
| 203 | if (!send_trap(gsn, pdp, member, "imsi-ass-ip")) { /* TRAP with IP assignment */ |
Max | 727417d | 2016-08-02 17:10:38 +0200 | [diff] [blame] | 204 | gtp_create_context_resp(gsn, pdp, GTPCAUSE_NO_RESOURCES); |
| 205 | return 0; |
| 206 | } |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 207 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 208 | gtp_create_context_resp(gsn, pdp, GTPCAUSE_ACC_REQ); |
| 209 | return 0; /* Success */ |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 210 | } |
| 211 | |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 212 | /* Callback for receiving messages from tun */ |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 213 | int cb_tun_ind(struct tun_t *tun, void *pack, unsigned len) |
| 214 | { |
| 215 | struct ippoolm_t *ipm; |
| 216 | struct in_addr dst; |
| 217 | struct tun_packet_t *iph = (struct tun_packet_t *)pack; |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 218 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 219 | dst.s_addr = iph->dst; |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 220 | |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 221 | DEBUGP(DGGSN, "Received packet from tun!\n"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 222 | |
| 223 | if (ippool_getip(ippool, &ipm, &dst)) { |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 224 | DEBUGP(DGGSN, "Received packet with no destination!!!\n"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 225 | return 0; |
| 226 | } |
| 227 | |
| 228 | if (ipm->peer) /* Check if a peer protocol is defined */ |
| 229 | gtp_data_req(gsn, (struct pdp_t *)ipm->peer, pack, len); |
| 230 | return 0; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 231 | } |
| 232 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 233 | int encaps_tun(struct pdp_t *pdp, void *pack, unsigned len) |
| 234 | { |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 235 | DEBUGP(DGGSN, "encaps_tun. Packet received: forwarding to tun\n"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 236 | return tun_encaps((struct tun_t *)pdp->ipif, pack, len); |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 237 | } |
| 238 | |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 239 | int main(int argc, char **argv) |
| 240 | { |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 241 | /* gengeopt declarations */ |
| 242 | struct gengetopt_args_info args_info; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 243 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 244 | struct hostent *host; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 245 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 246 | /* Handle keyboard interrupt SIGINT */ |
| 247 | struct sigaction s; |
| 248 | s.sa_handler = (void *)signal_handler; |
| 249 | if ((0 != sigemptyset(&s.sa_mask)) && debug) |
| 250 | printf("sigemptyset failed.\n"); |
| 251 | s.sa_flags = SA_RESETHAND; |
| 252 | if ((sigaction(SIGINT, &s, NULL) != 0) && debug) |
| 253 | printf("Could not register SIGINT signal handler.\n"); |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 254 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 255 | fd_set fds; /* For select() */ |
| 256 | struct timeval idleTime; /* How long to select() */ |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 257 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 258 | int timelimit; /* Number of seconds to be connected */ |
| 259 | int starttime; /* Time program was started */ |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 260 | |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 261 | osmo_init_logging(&log_info); |
jjako | 0141d20 | 2004-01-09 15:19:20 +0000 | [diff] [blame] | 262 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 263 | if (cmdline_parser(argc, argv, &args_info) != 0) |
| 264 | exit(1); |
| 265 | if (args_info.debug_flag) { |
| 266 | printf("listen: %s\n", args_info.listen_arg); |
| 267 | if (args_info.conf_arg) |
| 268 | printf("conf: %s\n", args_info.conf_arg); |
| 269 | printf("fg: %d\n", args_info.fg_flag); |
| 270 | printf("debug: %d\n", args_info.debug_flag); |
| 271 | printf("qos: %#08x\n", args_info.qos_arg); |
| 272 | if (args_info.apn_arg) |
| 273 | printf("apn: %s\n", args_info.apn_arg); |
| 274 | if (args_info.net_arg) |
| 275 | printf("net: %s\n", args_info.net_arg); |
| 276 | if (args_info.dynip_arg) |
| 277 | printf("dynip: %s\n", args_info.dynip_arg); |
| 278 | if (args_info.statip_arg) |
| 279 | printf("statip: %s\n", args_info.statip_arg); |
| 280 | if (args_info.ipup_arg) |
| 281 | printf("ipup: %s\n", args_info.ipup_arg); |
| 282 | if (args_info.ipdown_arg) |
| 283 | printf("ipdown: %s\n", args_info.ipdown_arg); |
| 284 | if (args_info.pidfile_arg) |
| 285 | printf("pidfile: %s\n", args_info.pidfile_arg); |
| 286 | if (args_info.statedir_arg) |
| 287 | printf("statedir: %s\n", args_info.statedir_arg); |
Pablo Neira Ayuso | d9d7be3 | 2016-05-10 18:43:12 +0200 | [diff] [blame] | 288 | if (args_info.gtp_linux_flag) |
| 289 | printf("gtp_linux: %d\n", args_info.gtp_linux_flag); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 290 | printf("timelimit: %d\n", args_info.timelimit_arg); |
| 291 | } |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 292 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 293 | /* Try out our new parser */ |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 294 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 295 | if (cmdline_parser_configfile(args_info.conf_arg, &args_info, 0, 0, 0) |
| 296 | != 0) |
| 297 | exit(1); |
Holger Hans Peter Freyther | 9c0ff4f | 2014-03-23 10:07:26 +0100 | [diff] [blame] | 298 | |
| 299 | /* Open a log file */ |
| 300 | if (args_info.logfile_arg) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 301 | struct log_target *tgt; |
Holger Hans Peter Freyther | c38bf64 | 2014-12-04 18:54:58 +0100 | [diff] [blame] | 302 | int lvl; |
| 303 | |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 304 | tgt = log_target_find(LOG_TGT_TYPE_FILE, args_info.logfile_arg); |
| 305 | if (!tgt) { |
| 306 | tgt = log_target_create_file(args_info.logfile_arg); |
| 307 | if (!tgt) { |
| 308 | LOGP(DGGSN, LOGL_ERROR, |
| 309 | "Failed to create logfile: %s\n", |
| 310 | args_info.logfile_arg); |
| 311 | exit(1); |
| 312 | } |
| 313 | log_add_target(tgt); |
Holger Hans Peter Freyther | 9c0ff4f | 2014-03-23 10:07:26 +0100 | [diff] [blame] | 314 | } |
Holger Hans Peter Freyther | c38bf64 | 2014-12-04 18:54:58 +0100 | [diff] [blame] | 315 | log_set_all_filter(tgt, 1); |
| 316 | log_set_use_color(tgt, 0); |
| 317 | |
| 318 | if (args_info.loglevel_arg) { |
| 319 | lvl = log_parse_level(args_info.loglevel_arg); |
| 320 | log_set_log_level(tgt, lvl); |
| 321 | LOGP(DGGSN, LOGL_NOTICE, |
| 322 | "Set file log level to %s\n", |
| 323 | log_level_str(lvl)); |
| 324 | } |
Holger Hans Peter Freyther | 9c0ff4f | 2014-03-23 10:07:26 +0100 | [diff] [blame] | 325 | } |
| 326 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 327 | if (args_info.debug_flag) { |
| 328 | printf("cmdline_parser_configfile\n"); |
| 329 | printf("listen: %s\n", args_info.listen_arg); |
| 330 | printf("conf: %s\n", args_info.conf_arg); |
| 331 | printf("fg: %d\n", args_info.fg_flag); |
| 332 | printf("debug: %d\n", args_info.debug_flag); |
| 333 | printf("qos: %#08x\n", args_info.qos_arg); |
| 334 | if (args_info.apn_arg) |
| 335 | printf("apn: %s\n", args_info.apn_arg); |
| 336 | if (args_info.net_arg) |
| 337 | printf("net: %s\n", args_info.net_arg); |
| 338 | if (args_info.dynip_arg) |
| 339 | printf("dynip: %s\n", args_info.dynip_arg); |
| 340 | if (args_info.statip_arg) |
| 341 | printf("statip: %s\n", args_info.statip_arg); |
| 342 | if (args_info.ipup_arg) |
| 343 | printf("ipup: %s\n", args_info.ipup_arg); |
| 344 | if (args_info.ipdown_arg) |
| 345 | printf("ipdown: %s\n", args_info.ipdown_arg); |
| 346 | if (args_info.pidfile_arg) |
| 347 | printf("pidfile: %s\n", args_info.pidfile_arg); |
| 348 | if (args_info.statedir_arg) |
| 349 | printf("statedir: %s\n", args_info.statedir_arg); |
Pablo Neira Ayuso | d9d7be3 | 2016-05-10 18:43:12 +0200 | [diff] [blame] | 350 | if (args_info.gtp_linux_flag) |
| 351 | printf("gtp-linux: %d\n", args_info.gtp_linux_flag); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 352 | printf("timelimit: %d\n", args_info.timelimit_arg); |
| 353 | } |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 354 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 355 | /* Handle each option */ |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 356 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 357 | /* debug */ |
| 358 | debug = args_info.debug_flag; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 359 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 360 | /* listen */ |
| 361 | /* Do hostname lookup to translate hostname to IP address */ |
| 362 | /* Any port listening is not possible as a valid address is */ |
| 363 | /* required for create_pdp_context_response messages */ |
| 364 | if (args_info.listen_arg) { |
| 365 | if (!(host = gethostbyname(args_info.listen_arg))) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 366 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 367 | "Invalid listening address: %s!", |
| 368 | args_info.listen_arg); |
| 369 | exit(1); |
| 370 | } else { |
| 371 | memcpy(&listen_.s_addr, host->h_addr, host->h_length); |
| 372 | } |
| 373 | } else { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 374 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 375 | "Listening address must be specified! " |
| 376 | "Please use command line option --listen or " |
| 377 | "edit %s configuration file\n", args_info.conf_arg); |
| 378 | exit(1); |
| 379 | } |
jjako | 88c2216 | 2003-07-06 19:33:18 +0000 | [diff] [blame] | 380 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 381 | /* net */ |
| 382 | /* Store net as in_addr net and mask */ |
| 383 | if (args_info.net_arg) { |
| 384 | if (ippool_aton(&net, &mask, args_info.net_arg, 0)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 385 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 386 | "Invalid network address: %s!", |
| 387 | args_info.net_arg); |
| 388 | exit(1); |
| 389 | } |
| 390 | netaddr.s_addr = htonl(ntohl(net.s_addr) + 1); |
| 391 | destaddr.s_addr = htonl(ntohl(net.s_addr) + 1); |
| 392 | } else { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 393 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 394 | "Network address must be specified: %s!", |
| 395 | args_info.net_arg); |
| 396 | exit(1); |
| 397 | } |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 398 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 399 | /* dynip */ |
| 400 | if (!args_info.dynip_arg) { |
| 401 | if (ippool_new(&ippool, args_info.net_arg, NULL, 1, 0, |
| 402 | IPPOOL_NONETWORK | IPPOOL_NOGATEWAY | |
| 403 | IPPOOL_NOBROADCAST)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 404 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 405 | "Failed to allocate IP pool!"); |
| 406 | exit(1); |
| 407 | } |
| 408 | } else { |
| 409 | if (ippool_new(&ippool, args_info.dynip_arg, NULL, 1, 0, |
| 410 | IPPOOL_NONETWORK | IPPOOL_NOGATEWAY | |
| 411 | IPPOOL_NOBROADCAST)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 412 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 413 | "Failed to allocate IP pool!"); |
| 414 | exit(1); |
| 415 | } |
| 416 | } |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 417 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 418 | /* DNS1 and DNS2 */ |
jjako | ff9985c | 2004-01-16 11:05:22 +0000 | [diff] [blame] | 419 | #ifdef HAVE_INET_ATON |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 420 | dns1.s_addr = 0; |
| 421 | if (args_info.pcodns1_arg) { |
| 422 | if (0 == inet_aton(args_info.pcodns1_arg, &dns1)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 423 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 424 | "Failed to convert pcodns1!"); |
| 425 | exit(1); |
| 426 | } |
| 427 | } |
| 428 | dns2.s_addr = 0; |
| 429 | if (args_info.pcodns2_arg) { |
| 430 | if (0 == inet_aton(args_info.pcodns2_arg, &dns2)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 431 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 432 | "Failed to convert pcodns2!"); |
| 433 | exit(1); |
| 434 | } |
| 435 | } |
jjako | 1d3db97 | 2004-01-16 09:56:56 +0000 | [diff] [blame] | 436 | #else |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 437 | dns1.s_addr = 0; |
| 438 | if (args_info.pcodns1_arg) { |
| 439 | dns1.s_addr = inet_addr(args_info.pcodns1_arg); |
| 440 | if (dns1.s_addr == -1) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 441 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 442 | "Failed to convert pcodns1!"); |
| 443 | exit(1); |
| 444 | } |
| 445 | } |
| 446 | dns2.s_addr = 0; |
| 447 | if (args_info.pcodns2_arg) { |
| 448 | dns2.s_addr = inet_addr(args_info.pcodns2_arg); |
| 449 | if (dns2.s_addr == -1) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 450 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 451 | "Failed to convert pcodns2!"); |
| 452 | exit(1); |
| 453 | } |
| 454 | } |
jjako | 1d3db97 | 2004-01-16 09:56:56 +0000 | [diff] [blame] | 455 | #endif |
| 456 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 457 | pco.l = 20; |
| 458 | pco.v[0] = 0x80; /* x0000yyy x=1, yyy=000: PPP */ |
| 459 | pco.v[1] = 0x80; /* IPCP */ |
| 460 | pco.v[2] = 0x21; |
| 461 | pco.v[3] = 0x10; /* Length of contents */ |
| 462 | pco.v[4] = 0x02; /* ACK */ |
| 463 | pco.v[5] = 0x00; /* ID: Need to match request */ |
| 464 | pco.v[6] = 0x00; /* Length */ |
| 465 | pco.v[7] = 0x10; |
| 466 | pco.v[8] = 0x81; /* DNS 1 */ |
| 467 | pco.v[9] = 0x06; |
| 468 | memcpy(&pco.v[10], &dns1, sizeof(dns1)); |
| 469 | pco.v[14] = 0x83; |
| 470 | pco.v[15] = 0x06; /* DNS 2 */ |
| 471 | memcpy(&pco.v[16], &dns2, sizeof(dns2)); |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 472 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 473 | /* ipup */ |
| 474 | ipup = args_info.ipup_arg; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 475 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 476 | /* ipdown */ |
| 477 | ipdown = args_info.ipdown_arg; |
jjako | 4b26b51 | 2003-01-28 16:13:57 +0000 | [diff] [blame] | 478 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 479 | /* Timelimit */ |
| 480 | timelimit = args_info.timelimit_arg; |
| 481 | starttime = time(NULL); |
jjako | 4b26b51 | 2003-01-28 16:13:57 +0000 | [diff] [blame] | 482 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 483 | /* qos */ |
| 484 | qos.l = 3; |
| 485 | qos.v[2] = (args_info.qos_arg) & 0xff; |
| 486 | qos.v[1] = ((args_info.qos_arg) >> 8) & 0xff; |
| 487 | qos.v[0] = ((args_info.qos_arg) >> 16) & 0xff; |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 488 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 489 | /* apn */ |
| 490 | if (strlen(args_info.apn_arg) > (sizeof(apn.v) - 1)) { |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 491 | LOGP(DGGSN, LOGL_ERROR, "Invalid APN\n"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 492 | return -1; |
| 493 | } |
| 494 | apn.l = strlen(args_info.apn_arg) + 1; |
| 495 | apn.v[0] = (char)strlen(args_info.apn_arg); |
| 496 | strncpy((char *)&apn.v[1], args_info.apn_arg, sizeof(apn.v) - 1); |
jjako | e014978 | 2003-07-06 17:07:04 +0000 | [diff] [blame] | 497 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 498 | /* foreground */ |
| 499 | /* If flag not given run as a daemon */ |
| 500 | if (!args_info.fg_flag) { |
| 501 | FILE *f; |
| 502 | int rc; |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 503 | /* Close the standard file descriptors. */ |
| 504 | /* Is this really needed ? */ |
| 505 | f = freopen("/dev/null", "w", stdout); |
| 506 | if (f == NULL) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 507 | SYS_ERR(DGGSN, LOGL_NOTICE, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 508 | "Could not redirect stdout to /dev/null"); |
| 509 | } |
| 510 | f = freopen("/dev/null", "w", stderr); |
| 511 | if (f == NULL) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 512 | SYS_ERR(DGGSN, LOGL_NOTICE, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 513 | "Could not redirect stderr to /dev/null"); |
| 514 | } |
| 515 | f = freopen("/dev/null", "r", stdin); |
| 516 | if (f == NULL) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 517 | SYS_ERR(DGGSN, LOGL_NOTICE, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 518 | "Could not redirect stdin to /dev/null"); |
| 519 | } |
| 520 | rc = daemon(0, 0); |
| 521 | if (rc != 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 522 | SYS_ERR(DGGSN, LOGL_ERROR, rc, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 523 | "Could not daemonize"); |
| 524 | exit(1); |
| 525 | } |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 526 | } |
jjako | e014978 | 2003-07-06 17:07:04 +0000 | [diff] [blame] | 527 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 528 | /* pidfile */ |
| 529 | /* This has to be done after we have our final pid */ |
| 530 | if (args_info.pidfile_arg) { |
| 531 | log_pid(args_info.pidfile_arg); |
| 532 | } |
jjako | e014978 | 2003-07-06 17:07:04 +0000 | [diff] [blame] | 533 | |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 534 | DEBUGP(DGGSN, "gtpclient: Initialising GTP tunnel\n"); |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 535 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 536 | if (gtp_new(&gsn, args_info.statedir_arg, &listen_, GTP_MODE_GGSN)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 537 | SYS_ERR(DGGSN, LOGL_ERROR, 0, "Failed to create gtp"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 538 | exit(1); |
| 539 | } |
| 540 | if (gsn->fd0 > maxfd) |
| 541 | maxfd = gsn->fd0; |
| 542 | if (gsn->fd1c > maxfd) |
| 543 | maxfd = gsn->fd1c; |
| 544 | if (gsn->fd1u > maxfd) |
| 545 | maxfd = gsn->fd1u; |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 546 | |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 547 | /* use GTP kernel module for data packet encapsulation */ |
| 548 | if (gtp_kernel_init(gsn, &net, &mask, &args_info) < 0) |
| 549 | goto err; |
| 550 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 551 | gtp_set_cb_data_ind(gsn, encaps_tun); |
| 552 | gtp_set_cb_delete_context(gsn, delete_context); |
| 553 | gtp_set_cb_create_context_ind(gsn, create_context_ind); |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 554 | |
Max | 727417d | 2016-08-02 17:10:38 +0200 | [diff] [blame] | 555 | gsn->ctrl = ctrl_interface_setup(NULL, OSMO_CTRL_PORT_GGSN, NULL); |
| 556 | if (!gsn->ctrl) { |
| 557 | LOGP(DGGSN, LOGL_ERROR, "Failed to create CTRL interface.\n"); |
| 558 | exit(1); |
| 559 | } |
| 560 | |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 561 | /* skip the configuration of the tun0 if we're using the gtp0 device */ |
| 562 | if (gtp_kernel_enabled()) |
| 563 | goto skip_tun; |
| 564 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 565 | /* Create a tunnel interface */ |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 566 | DEBUGP(DGGSN, "Creating tun interface\n"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 567 | if (tun_new((struct tun_t **)&tun)) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 568 | SYS_ERR(DGGSN, LOGL_ERROR, 0, "Failed to create tun"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 569 | exit(1); |
| 570 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 571 | |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 572 | DEBUGP(DGGSN, "Setting tun IP address\n"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 573 | if (tun_setaddr(tun, &netaddr, &destaddr, &mask)) { |
Holger Hans Peter Freyther | 6ab58b4 | 2014-12-04 19:29:57 +0100 | [diff] [blame] | 574 | SYS_ERR(DGGSN, LOGL_ERROR, 0, "Failed to set tun IP address"); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 575 | exit(1); |
| 576 | } |
jjako | a7cd249 | 2003-04-11 09:40:12 +0000 | [diff] [blame] | 577 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 578 | tun_set_cb_ind(tun, cb_tun_ind); |
| 579 | if (tun->fd > maxfd) |
| 580 | maxfd = tun->fd; |
jjako | c6762cf | 2004-04-28 14:52:58 +0000 | [diff] [blame] | 581 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 582 | if (ipup) |
| 583 | tun_runscript(tun, ipup); |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 584 | |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 585 | skip_tun: |
| 586 | |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 587 | /******************************************************************/ |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 588 | /* Main select loop */ |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 589 | /******************************************************************/ |
| 590 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 591 | while ((((starttime + timelimit) > time(NULL)) || (0 == timelimit)) |
| 592 | && (!end)) { |
Harald Welte | c3dcba0 | 2010-05-04 11:02:54 +0200 | [diff] [blame] | 593 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 594 | FD_ZERO(&fds); |
| 595 | if (tun) |
| 596 | FD_SET(tun->fd, &fds); |
| 597 | FD_SET(gsn->fd0, &fds); |
| 598 | FD_SET(gsn->fd1c, &fds); |
| 599 | FD_SET(gsn->fd1u, &fds); |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 600 | |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 601 | gtp_retranstimeout(gsn, &idleTime); |
| 602 | switch (select(maxfd + 1, &fds, NULL, NULL, &idleTime)) { |
| 603 | case -1: /* errno == EINTR : unblocked signal */ |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 604 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 605 | "select() returned -1"); |
| 606 | /* On error, select returns without modifying fds */ |
| 607 | FD_ZERO(&fds); |
| 608 | break; |
| 609 | case 0: |
| 610 | /* printf("Select returned 0\n"); */ |
| 611 | gtp_retrans(gsn); /* Only retransmit if nothing else */ |
| 612 | break; |
| 613 | default: |
| 614 | break; |
| 615 | } |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 616 | |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 617 | if (tun && tun->fd != -1 && FD_ISSET(tun->fd, &fds) && |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 618 | tun_decaps(tun) < 0) { |
Holger Hans Peter Freyther | 9c7fd8e | 2014-12-04 16:32:37 +0100 | [diff] [blame] | 619 | SYS_ERR(DGGSN, LOGL_ERROR, 0, |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 620 | "TUN read failed (fd)=(%d)", tun->fd); |
| 621 | } |
| 622 | |
| 623 | if (FD_ISSET(gsn->fd0, &fds)) |
| 624 | gtp_decaps0(gsn); |
| 625 | |
| 626 | if (FD_ISSET(gsn->fd1c, &fds)) |
| 627 | gtp_decaps1c(gsn); |
| 628 | |
| 629 | if (FD_ISSET(gsn->fd1u, &fds)) |
| 630 | gtp_decaps1u(gsn); |
| 631 | |
Max | 727417d | 2016-08-02 17:10:38 +0200 | [diff] [blame] | 632 | osmo_select_main(1); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 633 | } |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 634 | err: |
| 635 | gtp_kernel_stop(); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 636 | cmdline_parser_free(&args_info); |
| 637 | ippool_free(ippool); |
| 638 | gtp_free(gsn); |
Pablo Neira Ayuso | 4b075b6 | 2015-11-17 12:22:42 +0100 | [diff] [blame] | 639 | if (tun) |
| 640 | tun_free(tun); |
Harald Welte | bed35df | 2011-11-02 13:06:18 +0100 | [diff] [blame] | 641 | |
| 642 | return 1; |
| 643 | |
jjako | 52c2414 | 2002-12-16 13:33:51 +0000 | [diff] [blame] | 644 | } |