masqmail

annotate src/masqmail.c @ 250:a41c013c8458

find changesets by author, revision, files, or words in the commit message
moved the queue manipulation code to an new function
author markus schnalke <meillo@marmaro.de>
date Thu, 04 Nov 2010 12:32:11 -0300
parents f9da5a7caeda
children 2babd21e7c75
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 1999-2001 Oliver Kurth
meillo@76 3 Copyright (C) 2010 markus schnalke <meillo@marmaro.de>
meillo@0 4
meillo@0 5 This program is free software; you can redistribute it and/or modify
meillo@0 6 it under the terms of the GNU General Public License as published by
meillo@0 7 the Free Software Foundation; either version 2 of the License, or
meillo@0 8 (at your option) any later version.
meillo@0 9
meillo@0 10 This program is distributed in the hope that it will be useful,
meillo@0 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 13 GNU General Public License for more details.
meillo@0 14
meillo@0 15 You should have received a copy of the GNU General Public License
meillo@0 16 along with this program; if not, write to the Free Software
meillo@0 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0 18 */
meillo@0 19
meillo@0 20 #include <stdio.h>
meillo@0 21 #include <errno.h>
meillo@0 22 #include <stdlib.h>
meillo@0 23 #include <string.h>
meillo@0 24 #include <unistd.h>
meillo@0 25 #include <sys/types.h>
meillo@0 26 #include <sys/socket.h>
meillo@0 27 #include <sys/time.h>
meillo@0 28 #include <netinet/in.h>
meillo@0 29 #include <netdb.h>
meillo@0 30 #include <syslog.h>
meillo@0 31 #include <signal.h>
meillo@0 32
meillo@0 33 #include <glib.h>
meillo@0 34
meillo@0 35 #include "masqmail.h"
meillo@0 36
meillo@192 37 /* mutually exclusive modes. Note that there is no 'queue daemon' mode.
meillo@192 38 It, as well as the distinction beween the two (non exclusive) daemon
meillo@192 39 (queue and listen) modes, is handled by flags.*/
meillo@10 40 typedef enum _mta_mode {
meillo@10 41 MODE_ACCEPT = 0, /* accept message on stdin */
meillo@10 42 MODE_DAEMON, /* run as daemon */
meillo@10 43 MODE_RUNQUEUE, /* single queue run, online or offline */
meillo@10 44 MODE_SMTP, /* accept SMTP on stdin */
meillo@10 45 MODE_LIST, /* list queue */
meillo@10 46 MODE_MCMD, /* do queue manipulation */
meillo@10 47 MODE_VERSION, /* show version */
meillo@10 48 MODE_BI, /* fake ;-) */
meillo@10 49 MODE_NONE /* to prevent default MODE_ACCEPT */
meillo@10 50 } mta_mode;
meillo@0 51
meillo@0 52 char *pidfile = NULL;
meillo@0 53 volatile int sigterm_in_progress = 0;
meillo@0 54
meillo@10 55 static void
meillo@10 56 sigterm_handler(int sig)
meillo@0 57 {
meillo@10 58 if (sigterm_in_progress)
meillo@10 59 raise(sig);
meillo@10 60 sigterm_in_progress = 1;
meillo@0 61
meillo@10 62 if (pidfile) {
meillo@10 63 uid_t uid;
meillo@10 64 uid = seteuid(0);
meillo@10 65 if (unlink(pidfile) != 0)
meillo@10 66 logwrite(LOG_WARNING, "could not delete pid file %s: %s\n", pidfile, strerror(errno));
meillo@10 67 seteuid(uid); /* we exit anyway after this, just to be sure */
meillo@10 68 }
meillo@0 69
meillo@10 70 signal(sig, SIG_DFL);
meillo@10 71 raise(sig);
meillo@0 72 }
meillo@0 73
meillo@10 74 #ifdef ENABLE_IDENT /* so far used for that only */
meillo@10 75 static gboolean
meillo@10 76 is_in_netlist(gchar * host, GList * netlist)
meillo@0 77 {
meillo@10 78 guint hostip = inet_addr(host);
meillo@10 79 struct in_addr addr;
meillo@0 80
meillo@10 81 addr.s_addr = hostip;
meillo@10 82 if (addr.s_addr != INADDR_NONE) {
meillo@10 83 GList *node;
meillo@10 84 foreach(netlist, node) {
meillo@10 85 struct in_addr *net = (struct in_addr *) (node->data);
meillo@10 86 if ((addr.s_addr & net->s_addr) == net->s_addr)
meillo@10 87 return TRUE;
meillo@10 88 }
meillo@10 89 }
meillo@10 90 return FALSE;
meillo@0 91 }
meillo@0 92 #endif
meillo@0 93
meillo@249 94 /*
meillo@249 95 argv: the original argv
meillo@249 96 argp: number of arg (may get modified!)
meillo@249 97 cp: pointing to the char after the option
meillo@249 98 e.g. `-d 6' `-d6'
meillo@249 99 ^ ^
meillo@249 100 */
meillo@10 101 gchar*
meillo@249 102 get_optarg(char* argv[], gint* argp, char* cp)
meillo@0 103 {
meillo@249 104 if (*cp) {
meillo@249 105 /* this kind: -xval */
meillo@249 106 return cp;
meillo@249 107 }
meillo@249 108 cp = argv[*argp+1];
meillo@249 109 if (cp && (*cp != '-')) {
meillo@249 110 /* this kind: -x val */
meillo@249 111 (*argp)++;
meillo@249 112 return cp;
meillo@10 113 }
meillo@10 114 return NULL;
meillo@0 115 }
meillo@0 116
meillo@10 117 gchar*
meillo@10 118 get_progname(gchar * arg0)
meillo@0 119 {
meillo@10 120 gchar *p = arg0 + strlen(arg0) - 1;
meillo@10 121 while (p > arg0) {
meillo@10 122 if (*p == '/')
meillo@10 123 return p + 1;
meillo@10 124 p--;
meillo@10 125 }
meillo@10 126 return p;
meillo@0 127 }
meillo@0 128
meillo@10 129 gboolean
meillo@10 130 write_pidfile(gchar * name)
meillo@0 131 {
meillo@10 132 FILE *fptr;
meillo@0 133
meillo@10 134 if ((fptr = fopen(name, "wt"))) {
meillo@10 135 fprintf(fptr, "%d\n", getpid());
meillo@10 136 fclose(fptr);
meillo@10 137 pidfile = strdup(name);
meillo@10 138 return TRUE;
meillo@10 139 }
meillo@10 140 logwrite(LOG_WARNING, "could not write pid file: %s\n", strerror(errno));
meillo@10 141 return FALSE;
meillo@10 142 }
meillo@0 143
meillo@10 144 static void
meillo@10 145 mode_daemon(gboolean do_listen, gint queue_interval, char *argv[])
meillo@10 146 {
meillo@10 147 guint pid;
meillo@0 148
meillo@10 149 /* daemon */
meillo@10 150 if (!conf.run_as_user) {
meillo@10 151 if ((conf.orig_uid != 0) && (conf.orig_uid != conf.mail_uid)) {
meillo@10 152 fprintf(stderr, "must be root or %s for daemon.\n", DEF_MAIL_USER);
meillo@10 153 exit(EXIT_FAILURE);
meillo@10 154 }
meillo@10 155 }
meillo@0 156
meillo@74 157 /* reparent to init only if init is not already the parent */
meillo@74 158 if (getppid() != 1) {
meillo@74 159 if ((pid = fork()) > 0) {
meillo@74 160 exit(EXIT_SUCCESS);
meillo@74 161 } else if (pid < 0) {
meillo@208 162 logwrite(LOG_ALERT, "could not fork!\n");
meillo@74 163 exit(EXIT_FAILURE);
meillo@74 164 }
meillo@10 165 }
meillo@0 166
meillo@10 167 signal(SIGTERM, sigterm_handler);
meillo@10 168 write_pidfile(PIDFILEDIR "/masqmail.pid");
meillo@0 169
meillo@10 170 conf.do_verbose = FALSE;
meillo@10 171
meillo@72 172 /* closing and reopening the log ensures that it is open afterwards
meillo@72 173 because it is possible that the log is assigned to fd 1 and gets
meillo@72 174 thus closes by fclose(stdout). Similar for the debugfile.
meillo@72 175 */
meillo@72 176 logclose();
meillo@10 177 fclose(stdin);
meillo@10 178 fclose(stdout);
meillo@10 179 fclose(stderr);
meillo@72 180 logopen();
meillo@10 181
meillo@208 182 logwrite(LOG_NOTICE, "%s %s daemon starting\n", PACKAGE, VERSION);
meillo@10 183 listen_port(do_listen ? conf.listen_addresses : NULL, queue_interval, argv);
meillo@0 184 }
meillo@0 185
meillo@10 186 static void
meillo@10 187 mode_smtp()
meillo@0 188 {
meillo@10 189 /* accept smtp message on stdin */
meillo@10 190 /* write responses to stderr. */
meillo@0 191
meillo@10 192 struct sockaddr_in saddr;
meillo@10 193 gchar *peername = NULL;
meillo@10 194 int dummy = sizeof(saddr);
meillo@0 195
meillo@10 196 conf.do_verbose = FALSE;
meillo@0 197
meillo@10 198 if (!conf.run_as_user) {
meillo@10 199 seteuid(conf.orig_uid);
meillo@10 200 setegid(conf.orig_gid);
meillo@10 201 }
meillo@0 202
meillo@10 203 DEBUG(5) debugf("accepting smtp message on stdin\n");
meillo@0 204
meillo@10 205 if (getpeername(0, (struct sockaddr *) (&saddr), &dummy) == 0) {
meillo@10 206 peername = g_strdup(inet_ntoa(saddr.sin_addr));
meillo@10 207 } else if (errno != ENOTSOCK)
meillo@10 208 exit(EXIT_FAILURE);
meillo@0 209
meillo@10 210 smtp_in(stdin, stderr, peername, NULL);
meillo@0 211 }
meillo@0 212
meillo@10 213 static void
meillo@10 214 mode_accept(address * return_path, gchar * full_sender_name, guint accept_flags, char **addresses, int addr_cnt)
meillo@0 215 {
meillo@10 216 /* accept message on stdin */
meillo@10 217 accept_error err;
meillo@10 218 message *msg = create_message();
meillo@10 219 gint i;
meillo@0 220
meillo@83 221 if (return_path && !is_privileged_user(conf.orig_uid)) {
meillo@96 222 fprintf(stderr, "must be root, %s or in group %s for setting return path.\n", DEF_MAIL_USER, DEF_MAIL_GROUP);
meillo@83 223 exit(EXIT_FAILURE);
meillo@10 224 }
meillo@0 225
meillo@10 226 if (!conf.run_as_user) {
meillo@10 227 seteuid(conf.orig_uid);
meillo@10 228 setegid(conf.orig_gid);
meillo@10 229 }
meillo@0 230
meillo@10 231 DEBUG(5) debugf("accepting message on stdin\n");
meillo@0 232
meillo@10 233 msg->received_prot = PROT_LOCAL;
meillo@10 234 for (i = 0; i < addr_cnt; i++) {
meillo@10 235 if (addresses[i][0] != '|')
meillo@10 236 msg->rcpt_list = g_list_append(msg->rcpt_list, create_address_qualified(addresses[i], TRUE, conf.host_name));
meillo@10 237 else {
meillo@10 238 logwrite(LOG_ALERT, "no pipe allowed as recipient address: %s\n", addresses[i]);
meillo@10 239 exit(EXIT_FAILURE);
meillo@10 240 }
meillo@10 241 }
meillo@0 242
meillo@10 243 /* -f option */
meillo@10 244 msg->return_path = return_path;
meillo@0 245
meillo@10 246 /* -F option */
meillo@10 247 msg->full_sender_name = full_sender_name;
meillo@0 248
meillo@10 249 if ((err = accept_message(stdin, msg, accept_flags)) == AERR_OK) {
meillo@10 250 if (spool_write(msg, TRUE)) {
meillo@10 251 pid_t pid;
meillo@10 252 logwrite(LOG_NOTICE, "%s <= %s with %s\n", msg->uid, addr_string(msg->return_path), prot_names[PROT_LOCAL]);
meillo@0 253
meillo@10 254 if (!conf.do_queue) {
meillo@10 255 if ((pid = fork()) == 0) {
meillo@10 256 conf.do_verbose = FALSE;
meillo@10 257 fclose(stdin);
meillo@10 258 fclose(stdout);
meillo@10 259 fclose(stderr);
meillo@10 260 if (deliver(msg)) {
meillo@10 261 exit(EXIT_SUCCESS);
meillo@10 262 } else
meillo@10 263 exit(EXIT_FAILURE);
meillo@10 264 } else if (pid < 0) {
meillo@208 265 logwrite(LOG_ALERT, "could not fork for delivery, id = %s\n", msg->uid);
meillo@10 266 }
meillo@10 267 }
meillo@10 268 } else {
meillo@10 269 fprintf(stderr, "Could not write spool file\n");
meillo@10 270 exit(EXIT_FAILURE);
meillo@10 271 }
meillo@10 272 } else {
meillo@10 273 switch (err) {
meillo@10 274 case AERR_EOF:
meillo@10 275 fprintf(stderr, "unexpected EOF.\n");
meillo@10 276 exit(EXIT_FAILURE);
meillo@10 277 case AERR_NORCPT:
meillo@10 278 fprintf(stderr, "no recipients.\n");
meillo@10 279 exit(EXIT_FAILURE);
meillo@117 280 case AERR_SIZE:
meillo@117 281 fprintf(stderr, "max message size exceeded.\n");
meillo@117 282 exit(EXIT_FAILURE);
meillo@10 283 default:
meillo@10 284 /* should never happen: */
meillo@10 285 fprintf(stderr, "Unknown error (%d)\r\n", err);
meillo@10 286 exit(EXIT_FAILURE);
meillo@10 287 }
meillo@10 288 exit(EXIT_FAILURE);
meillo@0 289 }
meillo@0 290 }
meillo@0 291
meillo@250 292 /*
meillo@250 293 currently only the `rm' command is supported
meillo@250 294 until this changes, we don't need any facility for further commands
meillo@250 295 return success if at least one message had been deleted
meillo@250 296 */
meillo@250 297 static int
meillo@250 298 manipulate_queue(char* cmd, char* id[])
meillo@250 299 {
meillo@250 300 gboolean ok = FALSE;
meillo@250 301
meillo@250 302 if (strcmp(cmd, "rm") != 0) {
meillo@250 303 fprintf(stderr, "unknown command %s\n", cmd);
meillo@250 304 return FALSE;
meillo@250 305 }
meillo@250 306
meillo@250 307 set_euidgid(conf.mail_uid, conf.mail_gid, NULL, NULL);
meillo@250 308
meillo@250 309 /* privileged users may delete any mail */
meillo@250 310 if (is_privileged_user(conf.orig_uid)) {
meillo@250 311 for (; *id; id++) {
meillo@250 312 fprintf(stderr, "id: %s\n", *id);
meillo@250 313 if (queue_delete(*id)) {
meillo@250 314 ok = TRUE;
meillo@250 315 }
meillo@250 316 }
meillo@250 317 return ok;
meillo@250 318 }
meillo@250 319
meillo@250 320 struct passwd *pw = getpwuid(conf.orig_uid);
meillo@250 321 if (!pw) {
meillo@250 322 fprintf(stderr, "could not find a passwd entry for uid %d: %s\n",
meillo@250 323 conf.orig_uid, strerror(errno));
meillo@250 324 return FALSE;
meillo@250 325 }
meillo@250 326
meillo@250 327 /* non-privileged users may only delete their own messages */
meillo@250 328 for (; *id; id++) {
meillo@250 329 message *msg = msg_spool_read(*id, FALSE);
meillo@250 330
meillo@250 331 fprintf(stderr, "id: %s\n", *id);
meillo@250 332
meillo@250 333 if (!msg->ident) {
meillo@250 334 fprintf(stderr, "message %s does not have an ident\n", *id);
meillo@250 335 continue;
meillo@250 336 }
meillo@250 337 if (strcmp(pw->pw_name, msg->ident) != 0) {
meillo@250 338 fprintf(stderr, "you do not own message id %s\n", *id);
meillo@250 339 continue;
meillo@250 340 }
meillo@250 341
meillo@250 342 if ( (msg->received_host || (msg->received_prot != PROT_LOCAL))
meillo@250 343 #ifdef ENABLE_IDENT
meillo@250 344 && !is_in_netlist(msg->received_host, conf.ident_trusted_nets)
meillo@250 345 #endif
meillo@250 346 ) {
meillo@250 347 fprintf(stderr, "message %s was not received locally or from a trusted network\n", *id);
meillo@250 348 continue;
meillo@250 349 }
meillo@250 350
meillo@250 351 ok = queue_delete(*id);
meillo@250 352 }
meillo@250 353 return ok;
meillo@250 354 }
meillo@250 355
meillo@0 356 int
meillo@0 357 main(int argc, char *argv[])
meillo@0 358 {
meillo@10 359 /* cmd line flags */
meillo@10 360 gchar *conf_file = CONF_FILE;
meillo@249 361 char* opt;
meillo@249 362 gint arg;
meillo@0 363
meillo@10 364 gboolean do_listen = FALSE;
meillo@10 365 gboolean do_runq = FALSE;
meillo@10 366 gboolean do_runq_online = FALSE;
meillo@0 367
meillo@10 368 gboolean do_queue = FALSE;
meillo@0 369
meillo@10 370 gboolean do_verbose = FALSE;
meillo@10 371 gint debug_level = -1;
meillo@0 372
meillo@10 373 mta_mode mta_mode = MODE_ACCEPT;
meillo@0 374
meillo@10 375 gint queue_interval = 0;
meillo@10 376 gboolean opt_t = FALSE;
meillo@10 377 gboolean opt_i = FALSE;
meillo@10 378 gboolean exit_failure = FALSE;
meillo@0 379
meillo@10 380 gchar *M_cmd = NULL;
meillo@0 381
meillo@10 382 gint exit_code = EXIT_SUCCESS;
meillo@10 383 gchar *route_name = NULL;
meillo@10 384 gchar *progname;
meillo@10 385 gchar *f_address = NULL;
meillo@10 386 gchar *full_sender_name = NULL;
meillo@10 387 address *return_path = NULL; /* may be changed by -f option */
meillo@0 388
meillo@10 389 progname = get_progname(argv[0]);
meillo@0 390
meillo@10 391 if (strcmp(progname, "mailq") == 0) {
meillo@10 392 mta_mode = MODE_LIST;
meillo@10 393 } else if (strcmp(progname, "mailrm") == 0) {
meillo@10 394 mta_mode = MODE_MCMD;
meillo@10 395 M_cmd = "rm";
meillo@10 396 } else if (strcmp(progname, "runq") == 0) {
meillo@10 397 mta_mode = MODE_RUNQUEUE;
meillo@10 398 do_runq = TRUE;
meillo@10 399 } else if (strcmp(progname, "rmail") == 0) {
meillo@89 400 /* the `rmail' alias should probably be removed now
meillo@89 401 that we have the rmail script. But let's keep it
meillo@89 402 for some while for compatibility. 2010-06-19 */
meillo@10 403 mta_mode = MODE_ACCEPT;
meillo@10 404 opt_i = TRUE;
meillo@10 405 } else if (strcmp(progname, "smtpd") == 0 || strcmp(progname, "in.smtpd") == 0) {
meillo@10 406 mta_mode = MODE_SMTP;
meillo@10 407 }
meillo@0 408
meillo@10 409 /* parse cmd line */
meillo@249 410 for (arg=1; arg<argc && argv[arg][0]=='-'; arg++) {
meillo@249 411 opt = argv[arg] + 1;
meillo@10 412
meillo@249 413 if (strcmp(opt, "-") == 0) {
meillo@249 414 /* everything after `--' are address arguments */
meillo@249 415 arg++;
meillo@249 416 break;
meillo@10 417
meillo@249 418 } else if (strcmp(opt, "bd") == 0) {
meillo@249 419 do_listen = TRUE;
meillo@249 420 mta_mode = MODE_DAEMON;
meillo@249 421
meillo@249 422 } else if (strcmp(opt, "bi") == 0) {
meillo@249 423 /* ignored */
meillo@249 424 mta_mode = MODE_BI;
meillo@249 425
meillo@249 426 } else if (strcmp(opt, "bs") == 0) {
meillo@249 427 mta_mode = MODE_SMTP;
meillo@249 428
meillo@249 429 } else if (strcmp(opt, "bp") == 0) {
meillo@249 430 mta_mode = MODE_LIST;
meillo@249 431
meillo@249 432 } else if (strcmp(opt, "bV") == 0) {
meillo@249 433 mta_mode = MODE_VERSION;
meillo@249 434
meillo@249 435 } else if (strncmp(opt, "B", 1) == 0) {
meillo@249 436 /* we ignore this and throw the argument away */
meillo@249 437 get_optarg(argv, &arg, opt+1);
meillo@249 438
meillo@249 439 } else if (strncmp(opt, "C", 1) == 0) {
meillo@249 440 if (!(conf_file = get_optarg(argv, &arg, opt+1))) {
meillo@249 441 fprintf(stderr, "-C requires a filename as argument.\n");
meillo@10 442 exit(EXIT_FAILURE);
meillo@10 443 }
meillo@249 444
meillo@249 445 } else if (strncmp(opt, "d", 1) == 0) {
meillo@249 446 if (getuid() != 0) {
meillo@249 447 fprintf(stderr, "only root may set the debug level.\n");
meillo@249 448 exit(EXIT_FAILURE);
meillo@249 449 }
meillo@249 450 char *lvl = get_optarg(argv, &arg, opt+1);
meillo@249 451 if (!lvl) {
meillo@249 452 fprintf(stderr, "-d requires a number argument.\n");
meillo@249 453 exit(EXIT_FAILURE);
meillo@249 454 }
meillo@249 455 debug_level = atoi(lvl);
meillo@249 456
meillo@249 457 } else if (strncmp(opt, "f", 1) == 0) {
meillo@249 458 /* set return path */
meillo@249 459 gchar *address = get_optarg(argv, &arg, opt+1);
meillo@249 460 if (!address) {
meillo@249 461 fprintf(stderr, "-f requires an address argument\n");
meillo@249 462 exit(EXIT_FAILURE);
meillo@249 463 }
meillo@249 464 f_address = g_strdup(address);
meillo@249 465
meillo@249 466 } else if (strncmp(opt, "F", 1) == 0) {
meillo@249 467 full_sender_name = get_optarg(argv, &arg, opt+1);
meillo@249 468 if (!full_sender_name) {
meillo@249 469 fprintf(stderr, "-F requires a name argument\n");
meillo@249 470 exit(EXIT_FAILURE);
meillo@249 471 }
meillo@249 472
meillo@249 473 } else if (strcmp(opt, "i") == 0) {
meillo@249 474 opt_i = TRUE;
meillo@249 475 exit_failure = FALSE; /* may override -oem */
meillo@249 476
meillo@249 477 } else if (strcmp(opt, "m") == 0) {
meillo@249 478 /* ignore -m (me too) switch (see man page) */
meillo@249 479
meillo@249 480 } else if (strcmp(opt, "Mrm") == 0) {
meillo@249 481 mta_mode = MODE_MCMD;
meillo@249 482 M_cmd = "rm";
meillo@249 483
meillo@249 484 } else if (strcmp(opt, "odq") == 0) {
meillo@249 485 do_queue = TRUE;
meillo@249 486
meillo@249 487 } else if (strcmp(opt, "oem") == 0) {
meillo@249 488 if (!opt_i) {
meillo@249 489 /* TODO: Why is this related to -i in any way? */
meillo@249 490 exit_failure = TRUE;
meillo@249 491 }
meillo@249 492
meillo@249 493 } else if (strcmp(opt, "oi") == 0) {
meillo@249 494 exit_failure = FALSE; /* may override -oem */
meillo@249 495
meillo@249 496 } else if (strncmp(opt, "o", 1) == 0) {
meillo@249 497 /* ignore all other -oXXX options */
meillo@249 498
meillo@249 499 } else if (strncmp(opt, "qo", 2) == 0) {
meillo@249 500 mta_mode = MODE_RUNQUEUE;
meillo@249 501 do_runq = FALSE;
meillo@249 502 do_runq_online = TRUE;
meillo@249 503 /* can be NULL, then we use online detection method */
meillo@249 504 route_name = get_optarg(argv, &arg, opt+2);
meillo@249 505
meillo@249 506 } else if (strncmp(opt, "q", 1) == 0) {
meillo@249 507 /* must be after the `qo' check */
meillo@249 508 gchar *optarg;
meillo@249 509 int dummy;
meillo@249 510
meillo@249 511 do_runq = TRUE;
meillo@249 512 mta_mode = MODE_RUNQUEUE;
meillo@249 513 if ((optarg = get_optarg(argv, &arg, opt+1))) {
meillo@249 514 mta_mode = MODE_DAEMON;
meillo@249 515 queue_interval = time_interval(optarg, &dummy);
meillo@249 516 }
meillo@249 517
meillo@249 518 } else if (strcmp(opt, "t") == 0) {
meillo@249 519 opt_t = TRUE;
meillo@249 520
meillo@249 521 } else if (strcmp(opt, "v") == 0) {
meillo@249 522 do_verbose = TRUE;
meillo@249 523
meillo@10 524 } else {
meillo@249 525 fprintf(stderr, "unrecognized option `-%s'\n", opt);
meillo@249 526 exit(EXIT_FAILURE);
meillo@10 527 }
meillo@0 528 }
meillo@0 529
meillo@10 530 if (mta_mode == MODE_VERSION) {
meillo@12 531 gchar *with_resolver = "";
meillo@12 532 gchar *with_auth = "";
meillo@12 533 gchar *with_ident = "";
meillo@0 534
meillo@0 535 #ifdef ENABLE_RESOLVER
meillo@10 536 with_resolver = " +resolver";
meillo@0 537 #endif
meillo@0 538 #ifdef ENABLE_AUTH
meillo@10 539 with_auth = " +auth";
meillo@0 540 #endif
meillo@0 541 #ifdef ENABLE_IDENT
meillo@10 542 with_ident = " +ident";
meillo@0 543 #endif
meillo@0 544
meillo@205 545 printf("%s %s%s%s%s\n", PACKAGE, VERSION, with_resolver, with_auth, with_ident);
meillo@0 546
meillo@10 547 exit(EXIT_SUCCESS);
meillo@10 548 }
meillo@0 549
meillo@10 550 /* initialize random generator */
meillo@10 551 srand(time(NULL));
meillo@10 552 /* ignore SIGPIPE signal */
meillo@10 553 signal(SIGPIPE, SIG_IGN);
meillo@0 554
meillo@73 555 /* close all possibly open file descriptors, except std{in,out,err} */
meillo@10 556 {
meillo@10 557 int i, max_fd = sysconf(_SC_OPEN_MAX);
meillo@0 558
meillo@10 559 if (max_fd <= 0)
meillo@10 560 max_fd = 64;
meillo@10 561 for (i = 3; i < max_fd; i++)
meillo@10 562 close(i);
meillo@10 563 }
meillo@0 564
meillo@10 565 init_conf();
meillo@0 566
meillo@10 567 /* if we are not privileged, and the config file was changed we
meillo@10 568 implicetely set the the run_as_user flag and give up all
meillo@10 569 privileges.
meillo@0 570
meillo@10 571 So it is possible for a user to run his own daemon without
meillo@10 572 breaking security.
meillo@10 573 */
meillo@10 574 if (strcmp(conf_file, CONF_FILE) != 0) {
meillo@10 575 if (conf.orig_uid != 0) {
meillo@10 576 conf.run_as_user = TRUE;
meillo@10 577 seteuid(conf.orig_uid);
meillo@10 578 setegid(conf.orig_gid);
meillo@10 579 setuid(conf.orig_uid);
meillo@10 580 setgid(conf.orig_gid);
meillo@10 581 }
meillo@10 582 }
meillo@0 583
meillo@155 584 conf.log_dir = LOG_DIR;
meillo@155 585 logopen();
meillo@155 586 if (!read_conf(conf_file)) {
meillo@155 587 logwrite(LOG_ALERT, "SHUTTING DOWN due to problems reading config\n");
meillo@155 588 exit(5);
meillo@155 589 }
meillo@155 590 logclose();
meillo@0 591
meillo@10 592 if (do_queue)
meillo@10 593 conf.do_queue = TRUE;
meillo@10 594 if (do_verbose)
meillo@10 595 conf.do_verbose = TRUE;
meillo@10 596 if (debug_level >= 0) /* if >= 0, it was given by argument */
meillo@10 597 conf.debug_level = debug_level;
meillo@0 598
meillo@46 599 /* It appears that changing to / ensures that we are never in
meillo@46 600 a directory which we cannot access. This situation could be
meillo@46 601 possible after changing identity.
meillo@46 602 Maybe we should only change to / if we not run as user, to
meillo@46 603 allow relative paths for log files in test setups for
meillo@46 604 instance.
meillo@46 605 */
meillo@10 606 chdir("/");
meillo@0 607
meillo@10 608 if (!conf.run_as_user) {
meillo@10 609 if (setgid(0) != 0) {
meillo@10 610 fprintf(stderr, "could not set gid to 0. Is the setuid bit set? : %s\n", strerror(errno));
meillo@10 611 exit(EXIT_FAILURE);
meillo@10 612 }
meillo@10 613 if (setuid(0) != 0) {
meillo@10 614 fprintf(stderr, "could not gain root privileges. Is the setuid bit set? : %s\n", strerror(errno));
meillo@10 615 exit(EXIT_FAILURE);
meillo@10 616 }
meillo@10 617 }
meillo@0 618
meillo@10 619 if (!logopen()) {
meillo@10 620 fprintf(stderr, "could not open log file\n");
meillo@10 621 exit(EXIT_FAILURE);
meillo@10 622 }
meillo@0 623
meillo@10 624 DEBUG(1) debugf("masqmail %s starting\n", VERSION);
meillo@0 625
meillo@10 626 DEBUG(5) {
meillo@10 627 gchar **str = argv;
meillo@10 628 debugf("args: \n");
meillo@10 629 while (*str) {
meillo@10 630 debugf("%s \n", *str);
meillo@10 631 str++;
meillo@10 632 }
meillo@10 633 }
meillo@10 634 DEBUG(5) debugf("queue_interval = %d\n", queue_interval);
meillo@0 635
meillo@10 636 if (f_address) {
meillo@10 637 return_path = create_address_qualified(f_address, TRUE, conf.host_name);
meillo@10 638 g_free(f_address);
meillo@10 639 if (!return_path) {
meillo@10 640 fprintf(stderr, "invalid RFC821 address: %s\n", f_address);
meillo@10 641 exit(EXIT_FAILURE);
meillo@10 642 }
meillo@10 643 }
meillo@10 644
meillo@10 645 switch (mta_mode) {
meillo@10 646 case MODE_DAEMON:
meillo@10 647 mode_daemon(do_listen, queue_interval, argv);
meillo@10 648 break;
meillo@10 649 case MODE_RUNQUEUE:
meillo@10 650 {
meillo@10 651 /* queue runs */
meillo@10 652 set_identity(conf.orig_uid, "queue run");
meillo@0 653
meillo@10 654 if (do_runq)
meillo@10 655 exit_code = queue_run() ? EXIT_SUCCESS : EXIT_FAILURE;
meillo@10 656
meillo@10 657 if (do_runq_online) {
meillo@10 658 if (route_name != NULL) {
meillo@10 659 conf.online_detect = g_strdup("argument");
meillo@10 660 set_online_name(route_name);
meillo@10 661 }
meillo@10 662 exit_code =
meillo@10 663 queue_run_online() ? EXIT_SUCCESS : EXIT_FAILURE;
meillo@10 664 }
meillo@10 665 }
meillo@10 666 break;
meillo@10 667
meillo@10 668 case MODE_SMTP:
meillo@10 669 mode_smtp();
meillo@10 670 break;
meillo@10 671
meillo@10 672 case MODE_LIST:
meillo@10 673 queue_list();
meillo@10 674 break;
meillo@10 675
meillo@10 676 case MODE_BI:
meillo@10 677 exit(EXIT_SUCCESS);
meillo@10 678 break; /* well... */
meillo@10 679
meillo@10 680 case MODE_MCMD:
meillo@250 681 exit(manipulate_queue(M_cmd, &argv[arg]) ? 0 : 1);
meillo@10 682 break;
meillo@10 683
meillo@10 684 case MODE_ACCEPT:
meillo@10 685 {
meillo@107 686 guint accept_flags = (opt_t ? ACC_DEL_RCPTS | ACC_RCPT_FROM_HEAD : 0)
meillo@110 687 | (opt_i ? ACC_DOT_IGNORE : ACC_NODOT_RELAX);
meillo@10 688 mode_accept(return_path, full_sender_name, accept_flags, &(argv[arg]), argc - arg);
meillo@10 689 exit(exit_failure ? EXIT_FAILURE : EXIT_SUCCESS);
meillo@10 690 }
meillo@10 691 break;
meillo@10 692 case MODE_NONE:
meillo@10 693 break;
meillo@10 694 default:
meillo@10 695 fprintf(stderr, "unknown mode: %d\n", mta_mode);
meillo@10 696 break;
meillo@0 697 }
meillo@0 698
meillo@10 699 logclose();
meillo@0 700
meillo@10 701 exit(exit_code);
meillo@0 702 }