masqmail

annotate src/masqmail.c @ 261:0afe18a9ee03

find changesets by author, revision, files, or words in the commit message
fixed previous commit and excluded mode_version() from main()
author markus schnalke <meillo@marmaro.de>
date Thu, 02 Dec 2010 16:52:39 -0300
parents bd3109ec0f0a
children fc1c6425c024
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@259 41 MODE_NONE = 0, /* for being able to check if a mode was defined */
meillo@259 42 MODE_ACCEPT, /* accept message on stdin */
meillo@10 43 MODE_DAEMON, /* run as daemon */
meillo@10 44 MODE_RUNQUEUE, /* single queue run, online or offline */
meillo@10 45 MODE_SMTP, /* accept SMTP on stdin */
meillo@10 46 MODE_LIST, /* list queue */
meillo@10 47 MODE_MCMD, /* do queue manipulation */
meillo@10 48 MODE_VERSION, /* show version */
meillo@10 49 MODE_BI, /* fake ;-) */
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 gboolean
meillo@10 118 write_pidfile(gchar * name)
meillo@0 119 {
meillo@10 120 FILE *fptr;
meillo@0 121
meillo@10 122 if ((fptr = fopen(name, "wt"))) {
meillo@10 123 fprintf(fptr, "%d\n", getpid());
meillo@10 124 fclose(fptr);
meillo@10 125 pidfile = strdup(name);
meillo@10 126 return TRUE;
meillo@10 127 }
meillo@10 128 logwrite(LOG_WARNING, "could not write pid file: %s\n", strerror(errno));
meillo@10 129 return FALSE;
meillo@10 130 }
meillo@0 131
meillo@10 132 static void
meillo@10 133 mode_daemon(gboolean do_listen, gint queue_interval, char *argv[])
meillo@10 134 {
meillo@10 135 guint pid;
meillo@0 136
meillo@10 137 /* daemon */
meillo@10 138 if (!conf.run_as_user) {
meillo@10 139 if ((conf.orig_uid != 0) && (conf.orig_uid != conf.mail_uid)) {
meillo@10 140 fprintf(stderr, "must be root or %s for daemon.\n", DEF_MAIL_USER);
meillo@10 141 exit(EXIT_FAILURE);
meillo@10 142 }
meillo@10 143 }
meillo@0 144
meillo@74 145 /* reparent to init only if init is not already the parent */
meillo@74 146 if (getppid() != 1) {
meillo@74 147 if ((pid = fork()) > 0) {
meillo@74 148 exit(EXIT_SUCCESS);
meillo@74 149 } else if (pid < 0) {
meillo@208 150 logwrite(LOG_ALERT, "could not fork!\n");
meillo@74 151 exit(EXIT_FAILURE);
meillo@74 152 }
meillo@10 153 }
meillo@0 154
meillo@10 155 signal(SIGTERM, sigterm_handler);
meillo@10 156 write_pidfile(PIDFILEDIR "/masqmail.pid");
meillo@0 157
meillo@10 158 conf.do_verbose = FALSE;
meillo@10 159
meillo@72 160 /* closing and reopening the log ensures that it is open afterwards
meillo@72 161 because it is possible that the log is assigned to fd 1 and gets
meillo@72 162 thus closes by fclose(stdout). Similar for the debugfile.
meillo@72 163 */
meillo@72 164 logclose();
meillo@10 165 fclose(stdin);
meillo@10 166 fclose(stdout);
meillo@10 167 fclose(stderr);
meillo@72 168 logopen();
meillo@10 169
meillo@208 170 logwrite(LOG_NOTICE, "%s %s daemon starting\n", PACKAGE, VERSION);
meillo@10 171 listen_port(do_listen ? conf.listen_addresses : NULL, queue_interval, argv);
meillo@0 172 }
meillo@0 173
meillo@10 174 static void
meillo@10 175 mode_smtp()
meillo@0 176 {
meillo@10 177 /* accept smtp message on stdin */
meillo@10 178 /* write responses to stderr. */
meillo@0 179
meillo@10 180 struct sockaddr_in saddr;
meillo@10 181 gchar *peername = NULL;
meillo@10 182 int dummy = sizeof(saddr);
meillo@0 183
meillo@10 184 conf.do_verbose = FALSE;
meillo@0 185
meillo@10 186 if (!conf.run_as_user) {
meillo@10 187 seteuid(conf.orig_uid);
meillo@10 188 setegid(conf.orig_gid);
meillo@10 189 }
meillo@0 190
meillo@10 191 DEBUG(5) debugf("accepting smtp message on stdin\n");
meillo@0 192
meillo@10 193 if (getpeername(0, (struct sockaddr *) (&saddr), &dummy) == 0) {
meillo@10 194 peername = g_strdup(inet_ntoa(saddr.sin_addr));
meillo@10 195 } else if (errno != ENOTSOCK)
meillo@10 196 exit(EXIT_FAILURE);
meillo@0 197
meillo@10 198 smtp_in(stdin, stderr, peername, NULL);
meillo@0 199 }
meillo@0 200
meillo@10 201 static void
meillo@10 202 mode_accept(address * return_path, gchar * full_sender_name, guint accept_flags, char **addresses, int addr_cnt)
meillo@0 203 {
meillo@10 204 /* accept message on stdin */
meillo@10 205 accept_error err;
meillo@10 206 message *msg = create_message();
meillo@10 207 gint i;
meillo@0 208
meillo@83 209 if (return_path && !is_privileged_user(conf.orig_uid)) {
meillo@96 210 fprintf(stderr, "must be root, %s or in group %s for setting return path.\n", DEF_MAIL_USER, DEF_MAIL_GROUP);
meillo@83 211 exit(EXIT_FAILURE);
meillo@10 212 }
meillo@0 213
meillo@10 214 if (!conf.run_as_user) {
meillo@10 215 seteuid(conf.orig_uid);
meillo@10 216 setegid(conf.orig_gid);
meillo@10 217 }
meillo@0 218
meillo@10 219 DEBUG(5) debugf("accepting message on stdin\n");
meillo@0 220
meillo@10 221 msg->received_prot = PROT_LOCAL;
meillo@10 222 for (i = 0; i < addr_cnt; i++) {
meillo@10 223 if (addresses[i][0] != '|')
meillo@10 224 msg->rcpt_list = g_list_append(msg->rcpt_list, create_address_qualified(addresses[i], TRUE, conf.host_name));
meillo@10 225 else {
meillo@10 226 logwrite(LOG_ALERT, "no pipe allowed as recipient address: %s\n", addresses[i]);
meillo@10 227 exit(EXIT_FAILURE);
meillo@10 228 }
meillo@10 229 }
meillo@0 230
meillo@10 231 /* -f option */
meillo@10 232 msg->return_path = return_path;
meillo@0 233
meillo@10 234 /* -F option */
meillo@10 235 msg->full_sender_name = full_sender_name;
meillo@0 236
meillo@10 237 if ((err = accept_message(stdin, msg, accept_flags)) == AERR_OK) {
meillo@10 238 if (spool_write(msg, TRUE)) {
meillo@10 239 pid_t pid;
meillo@10 240 logwrite(LOG_NOTICE, "%s <= %s with %s\n", msg->uid, addr_string(msg->return_path), prot_names[PROT_LOCAL]);
meillo@0 241
meillo@10 242 if (!conf.do_queue) {
meillo@10 243 if ((pid = fork()) == 0) {
meillo@10 244 conf.do_verbose = FALSE;
meillo@10 245 fclose(stdin);
meillo@10 246 fclose(stdout);
meillo@10 247 fclose(stderr);
meillo@10 248 if (deliver(msg)) {
meillo@10 249 exit(EXIT_SUCCESS);
meillo@10 250 } else
meillo@10 251 exit(EXIT_FAILURE);
meillo@10 252 } else if (pid < 0) {
meillo@208 253 logwrite(LOG_ALERT, "could not fork for delivery, id = %s\n", msg->uid);
meillo@10 254 }
meillo@10 255 }
meillo@10 256 } else {
meillo@10 257 fprintf(stderr, "Could not write spool file\n");
meillo@10 258 exit(EXIT_FAILURE);
meillo@10 259 }
meillo@10 260 } else {
meillo@10 261 switch (err) {
meillo@10 262 case AERR_EOF:
meillo@10 263 fprintf(stderr, "unexpected EOF.\n");
meillo@10 264 exit(EXIT_FAILURE);
meillo@10 265 case AERR_NORCPT:
meillo@10 266 fprintf(stderr, "no recipients.\n");
meillo@10 267 exit(EXIT_FAILURE);
meillo@117 268 case AERR_SIZE:
meillo@117 269 fprintf(stderr, "max message size exceeded.\n");
meillo@117 270 exit(EXIT_FAILURE);
meillo@10 271 default:
meillo@10 272 /* should never happen: */
meillo@10 273 fprintf(stderr, "Unknown error (%d)\r\n", err);
meillo@10 274 exit(EXIT_FAILURE);
meillo@10 275 }
meillo@10 276 exit(EXIT_FAILURE);
meillo@0 277 }
meillo@0 278 }
meillo@0 279
meillo@250 280 /*
meillo@250 281 currently only the `rm' command is supported
meillo@250 282 until this changes, we don't need any facility for further commands
meillo@250 283 return success if at least one message had been deleted
meillo@250 284 */
meillo@250 285 static int
meillo@250 286 manipulate_queue(char* cmd, char* id[])
meillo@250 287 {
meillo@250 288 gboolean ok = FALSE;
meillo@250 289
meillo@250 290 if (strcmp(cmd, "rm") != 0) {
meillo@250 291 fprintf(stderr, "unknown command %s\n", cmd);
meillo@250 292 return FALSE;
meillo@250 293 }
meillo@250 294
meillo@250 295 set_euidgid(conf.mail_uid, conf.mail_gid, NULL, NULL);
meillo@250 296
meillo@250 297 /* privileged users may delete any mail */
meillo@250 298 if (is_privileged_user(conf.orig_uid)) {
meillo@250 299 for (; *id; id++) {
meillo@250 300 fprintf(stderr, "id: %s\n", *id);
meillo@250 301 if (queue_delete(*id)) {
meillo@250 302 ok = TRUE;
meillo@250 303 }
meillo@250 304 }
meillo@250 305 return ok;
meillo@250 306 }
meillo@250 307
meillo@250 308 struct passwd *pw = getpwuid(conf.orig_uid);
meillo@250 309 if (!pw) {
meillo@250 310 fprintf(stderr, "could not find a passwd entry for uid %d: %s\n",
meillo@250 311 conf.orig_uid, strerror(errno));
meillo@250 312 return FALSE;
meillo@250 313 }
meillo@250 314
meillo@250 315 /* non-privileged users may only delete their own messages */
meillo@250 316 for (; *id; id++) {
meillo@250 317 message *msg = msg_spool_read(*id, FALSE);
meillo@250 318
meillo@250 319 fprintf(stderr, "id: %s\n", *id);
meillo@250 320
meillo@250 321 if (!msg->ident) {
meillo@250 322 fprintf(stderr, "message %s does not have an ident\n", *id);
meillo@250 323 continue;
meillo@250 324 }
meillo@250 325 if (strcmp(pw->pw_name, msg->ident) != 0) {
meillo@250 326 fprintf(stderr, "you do not own message id %s\n", *id);
meillo@250 327 continue;
meillo@250 328 }
meillo@250 329
meillo@250 330 if ( (msg->received_host || (msg->received_prot != PROT_LOCAL))
meillo@250 331 #ifdef ENABLE_IDENT
meillo@250 332 && !is_in_netlist(msg->received_host, conf.ident_trusted_nets)
meillo@250 333 #endif
meillo@250 334 ) {
meillo@250 335 fprintf(stderr, "message %s was not received locally or from a trusted network\n", *id);
meillo@250 336 continue;
meillo@250 337 }
meillo@250 338
meillo@250 339 ok = queue_delete(*id);
meillo@250 340 }
meillo@250 341 return ok;
meillo@250 342 }
meillo@250 343
meillo@251 344 static int
meillo@251 345 run_queue(gboolean do_runq, gboolean do_runq_online, char* route_name)
meillo@251 346 {
meillo@251 347 int ret;
meillo@251 348
meillo@251 349 /* queue runs */
meillo@251 350 set_identity(conf.orig_uid, "queue run");
meillo@251 351
meillo@251 352 if (do_runq) {
meillo@251 353 ret = queue_run();
meillo@251 354 }
meillo@251 355
meillo@251 356 if (do_runq_online) {
meillo@251 357 if (route_name) {
meillo@251 358 conf.online_detect = g_strdup("argument");
meillo@251 359 set_online_name(route_name);
meillo@251 360 }
meillo@251 361 ret = queue_run_online();
meillo@251 362 }
meillo@251 363 return ret;
meillo@251 364 }
meillo@251 365
meillo@261 366 static void
meillo@261 367 mode_version(void)
meillo@261 368 {
meillo@261 369 gchar *with_resolver = "";
meillo@261 370 gchar *with_auth = "";
meillo@261 371 gchar *with_ident = "";
meillo@261 372
meillo@261 373 #ifdef ENABLE_RESOLVER
meillo@261 374 with_resolver = " +resolver";
meillo@261 375 #endif
meillo@261 376 #ifdef ENABLE_AUTH
meillo@261 377 with_auth = " +auth";
meillo@261 378 #endif
meillo@261 379 #ifdef ENABLE_IDENT
meillo@261 380 with_ident = " +ident";
meillo@261 381 #endif
meillo@261 382
meillo@261 383 printf("%s %s%s%s%s\n", PACKAGE, VERSION, with_resolver, with_auth, with_ident);
meillo@261 384 }
meillo@261 385
meillo@0 386 int
meillo@0 387 main(int argc, char *argv[])
meillo@0 388 {
meillo@251 389 gchar *progname;
meillo@249 390 char* opt;
meillo@249 391 gint arg;
meillo@0 392
meillo@259 393 mta_mode mta_mode = MODE_NONE;
meillo@10 394 gboolean do_listen = FALSE;
meillo@10 395 gboolean do_runq = FALSE;
meillo@10 396 gboolean do_runq_online = FALSE;
meillo@10 397 gboolean do_queue = FALSE;
meillo@10 398 gint queue_interval = 0;
meillo@251 399 gchar *M_cmd = NULL;
meillo@10 400 gboolean opt_t = FALSE;
meillo@10 401 gboolean opt_i = FALSE;
meillo@10 402 gint exit_code = EXIT_SUCCESS;
meillo@251 403 gchar *conf_file = CONF_FILE;
meillo@10 404 gchar *route_name = NULL;
meillo@10 405 gchar *f_address = NULL;
meillo@251 406 address *return_path = NULL; /* may be changed by -f option */
meillo@10 407 gchar *full_sender_name = NULL;
meillo@251 408 gboolean do_verbose = FALSE;
meillo@251 409 gint debug_level = -1;
meillo@0 410
meillo@260 411 /* strip the path part */
meillo@261 412 progname = strrchr(argv[0], '/');
meillo@261 413 progname = (progname) ? progname+1 : argv[0];
meillo@0 414
meillo@10 415 if (strcmp(progname, "mailq") == 0) {
meillo@10 416 mta_mode = MODE_LIST;
meillo@10 417 } else if (strcmp(progname, "mailrm") == 0) {
meillo@10 418 mta_mode = MODE_MCMD;
meillo@10 419 M_cmd = "rm";
meillo@10 420 } else if (strcmp(progname, "runq") == 0) {
meillo@10 421 mta_mode = MODE_RUNQUEUE;
meillo@10 422 do_runq = TRUE;
meillo@10 423 } else if (strcmp(progname, "rmail") == 0) {
meillo@89 424 /* the `rmail' alias should probably be removed now
meillo@89 425 that we have the rmail script. But let's keep it
meillo@89 426 for some while for compatibility. 2010-06-19 */
meillo@10 427 mta_mode = MODE_ACCEPT;
meillo@10 428 opt_i = TRUE;
meillo@10 429 } else if (strcmp(progname, "smtpd") == 0 || strcmp(progname, "in.smtpd") == 0) {
meillo@10 430 mta_mode = MODE_SMTP;
meillo@10 431 }
meillo@0 432
meillo@10 433 /* parse cmd line */
meillo@249 434 for (arg=1; arg<argc && argv[arg][0]=='-'; arg++) {
meillo@251 435 opt = argv[arg] + 1; /* points to the char after the dash */
meillo@10 436
meillo@249 437 if (strcmp(opt, "-") == 0) {
meillo@249 438 /* everything after `--' are address arguments */
meillo@249 439 arg++;
meillo@249 440 break;
meillo@10 441
meillo@249 442 } else if (strcmp(opt, "bd") == 0) {
meillo@249 443 do_listen = TRUE;
meillo@249 444 mta_mode = MODE_DAEMON;
meillo@249 445
meillo@249 446 } else if (strcmp(opt, "bi") == 0) {
meillo@249 447 /* ignored */
meillo@249 448 mta_mode = MODE_BI;
meillo@249 449
meillo@249 450 } else if (strcmp(opt, "bs") == 0) {
meillo@249 451 mta_mode = MODE_SMTP;
meillo@249 452
meillo@249 453 } else if (strcmp(opt, "bp") == 0) {
meillo@249 454 mta_mode = MODE_LIST;
meillo@249 455
meillo@249 456 } else if (strcmp(opt, "bV") == 0) {
meillo@249 457 mta_mode = MODE_VERSION;
meillo@249 458
meillo@249 459 } else if (strncmp(opt, "B", 1) == 0) {
meillo@249 460 /* we ignore this and throw the argument away */
meillo@249 461 get_optarg(argv, &arg, opt+1);
meillo@249 462
meillo@249 463 } else if (strncmp(opt, "C", 1) == 0) {
meillo@251 464 conf_file = get_optarg(argv, &arg, opt+1);
meillo@251 465 if (!conf_file) {
meillo@249 466 fprintf(stderr, "-C requires a filename as argument.\n");
meillo@10 467 exit(EXIT_FAILURE);
meillo@10 468 }
meillo@249 469
meillo@249 470 } else if (strncmp(opt, "d", 1) == 0) {
meillo@249 471 if (getuid() != 0) {
meillo@249 472 fprintf(stderr, "only root may set the debug level.\n");
meillo@249 473 exit(EXIT_FAILURE);
meillo@249 474 }
meillo@249 475 char *lvl = get_optarg(argv, &arg, opt+1);
meillo@249 476 if (!lvl) {
meillo@249 477 fprintf(stderr, "-d requires a number argument.\n");
meillo@249 478 exit(EXIT_FAILURE);
meillo@249 479 }
meillo@249 480 debug_level = atoi(lvl);
meillo@249 481
meillo@249 482 } else if (strncmp(opt, "f", 1) == 0) {
meillo@249 483 /* set return path */
meillo@249 484 gchar *address = get_optarg(argv, &arg, opt+1);
meillo@249 485 if (!address) {
meillo@249 486 fprintf(stderr, "-f requires an address argument\n");
meillo@249 487 exit(EXIT_FAILURE);
meillo@249 488 }
meillo@249 489 f_address = g_strdup(address);
meillo@249 490
meillo@249 491 } else if (strncmp(opt, "F", 1) == 0) {
meillo@249 492 full_sender_name = get_optarg(argv, &arg, opt+1);
meillo@249 493 if (!full_sender_name) {
meillo@249 494 fprintf(stderr, "-F requires a name argument\n");
meillo@249 495 exit(EXIT_FAILURE);
meillo@249 496 }
meillo@249 497
meillo@249 498 } else if (strcmp(opt, "i") == 0) {
meillo@249 499 opt_i = TRUE;
meillo@249 500
meillo@249 501 } else if (strcmp(opt, "m") == 0) {
meillo@249 502 /* ignore -m (me too) switch (see man page) */
meillo@249 503
meillo@249 504 } else if (strcmp(opt, "Mrm") == 0) {
meillo@249 505 mta_mode = MODE_MCMD;
meillo@249 506 M_cmd = "rm";
meillo@249 507
meillo@249 508 } else if (strcmp(opt, "odq") == 0) {
meillo@249 509 do_queue = TRUE;
meillo@249 510
meillo@249 511 } else if (strcmp(opt, "oi") == 0) {
meillo@257 512 opt_i = TRUE;
meillo@249 513
meillo@249 514 } else if (strncmp(opt, "o", 1) == 0) {
meillo@249 515 /* ignore all other -oXXX options */
meillo@249 516
meillo@249 517 } else if (strncmp(opt, "qo", 2) == 0) {
meillo@249 518 mta_mode = MODE_RUNQUEUE;
meillo@249 519 do_runq = FALSE;
meillo@249 520 do_runq_online = TRUE;
meillo@249 521 /* can be NULL, then we use online detection method */
meillo@249 522 route_name = get_optarg(argv, &arg, opt+2);
meillo@249 523
meillo@249 524 } else if (strncmp(opt, "q", 1) == 0) {
meillo@249 525 /* must be after the `qo' check */
meillo@249 526 gchar *optarg;
meillo@249 527
meillo@249 528 do_runq = TRUE;
meillo@249 529 mta_mode = MODE_RUNQUEUE;
meillo@251 530 optarg = get_optarg(argv, &arg, opt+1);
meillo@251 531 if (optarg) {
meillo@251 532 /* not just one single queue run but regular runs */
meillo@249 533 mta_mode = MODE_DAEMON;
meillo@254 534 queue_interval = time_interval(optarg);
meillo@249 535 }
meillo@249 536
meillo@249 537 } else if (strcmp(opt, "t") == 0) {
meillo@249 538 opt_t = TRUE;
meillo@249 539
meillo@249 540 } else if (strcmp(opt, "v") == 0) {
meillo@249 541 do_verbose = TRUE;
meillo@249 542
meillo@10 543 } else {
meillo@249 544 fprintf(stderr, "unrecognized option `-%s'\n", opt);
meillo@249 545 exit(EXIT_FAILURE);
meillo@10 546 }
meillo@0 547 }
meillo@0 548
meillo@259 549 if (!mta_mode) {
meillo@259 550 mta_mode = (arg<argc || opt_t) ? MODE_ACCEPT : MODE_VERSION;
meillo@259 551 }
meillo@259 552
meillo@10 553 if (mta_mode == MODE_VERSION) {
meillo@261 554 mode_version();
meillo@10 555 exit(EXIT_SUCCESS);
meillo@10 556 }
meillo@0 557
meillo@10 558 /* initialize random generator */
meillo@10 559 srand(time(NULL));
meillo@10 560 /* ignore SIGPIPE signal */
meillo@10 561 signal(SIGPIPE, SIG_IGN);
meillo@0 562
meillo@73 563 /* close all possibly open file descriptors, except std{in,out,err} */
meillo@10 564 {
meillo@10 565 int i, max_fd = sysconf(_SC_OPEN_MAX);
meillo@0 566
meillo@251 567 if (max_fd <= 0) {
meillo@10 568 max_fd = 64;
meillo@251 569 }
meillo@251 570 for (i=3; i<max_fd; i++) {
meillo@10 571 close(i);
meillo@251 572 }
meillo@10 573 }
meillo@0 574
meillo@10 575 init_conf();
meillo@0 576
meillo@10 577 /* if we are not privileged, and the config file was changed we
meillo@10 578 implicetely set the the run_as_user flag and give up all
meillo@10 579 privileges.
meillo@0 580
meillo@10 581 So it is possible for a user to run his own daemon without
meillo@10 582 breaking security.
meillo@10 583 */
meillo@251 584 if ((strcmp(conf_file, CONF_FILE) != 0) && (conf.orig_uid != 0)) {
meillo@251 585 conf.run_as_user = TRUE;
meillo@251 586 seteuid(conf.orig_uid);
meillo@251 587 setegid(conf.orig_gid);
meillo@251 588 setuid(conf.orig_uid);
meillo@251 589 setgid(conf.orig_gid);
meillo@10 590 }
meillo@0 591
meillo@155 592 conf.log_dir = LOG_DIR;
meillo@155 593 logopen();
meillo@155 594 if (!read_conf(conf_file)) {
meillo@155 595 logwrite(LOG_ALERT, "SHUTTING DOWN due to problems reading config\n");
meillo@155 596 exit(5);
meillo@155 597 }
meillo@155 598 logclose();
meillo@0 599
meillo@251 600 if (do_queue) {
meillo@10 601 conf.do_queue = TRUE;
meillo@251 602 }
meillo@251 603 if (do_verbose) {
meillo@10 604 conf.do_verbose = TRUE;
meillo@251 605 }
meillo@251 606 if (debug_level >= 0) { /* if >= 0, it was given by argument */
meillo@10 607 conf.debug_level = debug_level;
meillo@251 608 }
meillo@0 609
meillo@46 610 /* It appears that changing to / ensures that we are never in
meillo@46 611 a directory which we cannot access. This situation could be
meillo@46 612 possible after changing identity.
meillo@46 613 Maybe we should only change to / if we not run as user, to
meillo@46 614 allow relative paths for log files in test setups for
meillo@46 615 instance.
meillo@46 616 */
meillo@10 617 chdir("/");
meillo@0 618
meillo@10 619 if (!conf.run_as_user) {
meillo@10 620 if (setgid(0) != 0) {
meillo@10 621 fprintf(stderr, "could not set gid to 0. Is the setuid bit set? : %s\n", strerror(errno));
meillo@10 622 exit(EXIT_FAILURE);
meillo@10 623 }
meillo@10 624 if (setuid(0) != 0) {
meillo@10 625 fprintf(stderr, "could not gain root privileges. Is the setuid bit set? : %s\n", strerror(errno));
meillo@10 626 exit(EXIT_FAILURE);
meillo@10 627 }
meillo@10 628 }
meillo@0 629
meillo@10 630 if (!logopen()) {
meillo@10 631 fprintf(stderr, "could not open log file\n");
meillo@10 632 exit(EXIT_FAILURE);
meillo@10 633 }
meillo@0 634
meillo@10 635 DEBUG(1) debugf("masqmail %s starting\n", VERSION);
meillo@0 636
meillo@10 637 DEBUG(5) {
meillo@10 638 gchar **str = argv;
meillo@10 639 debugf("args: \n");
meillo@10 640 while (*str) {
meillo@10 641 debugf("%s \n", *str);
meillo@10 642 str++;
meillo@10 643 }
meillo@10 644 }
meillo@10 645 DEBUG(5) debugf("queue_interval = %d\n", queue_interval);
meillo@0 646
meillo@10 647 if (f_address) {
meillo@10 648 return_path = create_address_qualified(f_address, TRUE, conf.host_name);
meillo@10 649 g_free(f_address);
meillo@10 650 if (!return_path) {
meillo@10 651 fprintf(stderr, "invalid RFC821 address: %s\n", f_address);
meillo@10 652 exit(EXIT_FAILURE);
meillo@10 653 }
meillo@10 654 }
meillo@10 655
meillo@10 656 switch (mta_mode) {
meillo@10 657 case MODE_DAEMON:
meillo@10 658 mode_daemon(do_listen, queue_interval, argv);
meillo@10 659 break;
meillo@251 660
meillo@10 661 case MODE_RUNQUEUE:
meillo@251 662 exit(run_queue(do_runq, do_runq_online, route_name) ? 0 : 1);
meillo@10 663 break;
meillo@10 664
meillo@10 665 case MODE_SMTP:
meillo@10 666 mode_smtp();
meillo@10 667 break;
meillo@10 668
meillo@10 669 case MODE_LIST:
meillo@10 670 queue_list();
meillo@10 671 break;
meillo@10 672
meillo@10 673 case MODE_BI:
meillo@10 674 exit(EXIT_SUCCESS);
meillo@10 675 break; /* well... */
meillo@10 676
meillo@10 677 case MODE_MCMD:
meillo@250 678 exit(manipulate_queue(M_cmd, &argv[arg]) ? 0 : 1);
meillo@10 679 break;
meillo@10 680
meillo@10 681 case MODE_ACCEPT:
meillo@10 682 {
meillo@107 683 guint accept_flags = (opt_t ? ACC_DEL_RCPTS | ACC_RCPT_FROM_HEAD : 0)
meillo@110 684 | (opt_i ? ACC_DOT_IGNORE : ACC_NODOT_RELAX);
meillo@10 685 mode_accept(return_path, full_sender_name, accept_flags, &(argv[arg]), argc - arg);
meillo@258 686 exit(0);
meillo@10 687 }
meillo@10 688 break;
meillo@251 689
meillo@10 690 default:
meillo@10 691 fprintf(stderr, "unknown mode: %d\n", mta_mode);
meillo@10 692 break;
meillo@0 693 }
meillo@0 694
meillo@10 695 logclose();
meillo@0 696
meillo@10 697 exit(exit_code);
meillo@0 698 }