14227346bSdist /* 20942ea6aSbostic * Copyright (c) 1983 Eric P. Allman 32b191fa3Sbostic * Copyright (c) 1988, 1993 42b191fa3Sbostic * The Regents of the University of California. All rights reserved. 5e70a7521Sbostic * 63bc94712Sbostic * %sccs.include.redist.c% 74227346bSdist */ 84227346bSdist 94227346bSdist #ifndef lint 10*df106f0bSeric static char sccsid[] = "@(#)deliver.c 8.31 (Berkeley) 10/15/93"; 11e70a7521Sbostic #endif /* not lint */ 124227346bSdist 13fcde9cc8Sbostic #include "sendmail.h" 14f28da541Smiriam #include <netdb.h> 15911693bfSbostic #include <errno.h> 16134746fbSeric #ifdef NAMED_BIND 17912a731aSbostic #include <arpa/nameser.h> 18912a731aSbostic #include <resolv.h> 19f170942cSeric 20f170942cSeric extern int h_errno; 21134746fbSeric #endif 2225a99e2eSeric 2325a99e2eSeric /* 249c9e68d9Seric ** SENDALL -- actually send all the messages. 259c9e68d9Seric ** 269c9e68d9Seric ** Parameters: 279c9e68d9Seric ** e -- the envelope to send. 289c9e68d9Seric ** mode -- the delivery mode to use. If SM_DEFAULT, use 299c9e68d9Seric ** the current e->e_sendmode. 309c9e68d9Seric ** 319c9e68d9Seric ** Returns: 329c9e68d9Seric ** none. 339c9e68d9Seric ** 349c9e68d9Seric ** Side Effects: 359c9e68d9Seric ** Scans the send lists and sends everything it finds. 369c9e68d9Seric ** Delivers any appropriate error messages. 379c9e68d9Seric ** If we are running in a non-interactive mode, takes the 389c9e68d9Seric ** appropriate action. 399c9e68d9Seric */ 409c9e68d9Seric 419c9e68d9Seric sendall(e, mode) 429c9e68d9Seric ENVELOPE *e; 439c9e68d9Seric char mode; 449c9e68d9Seric { 459c9e68d9Seric register ADDRESS *q; 469c9e68d9Seric char *owner; 479c9e68d9Seric int otherowners; 489c9e68d9Seric register ENVELOPE *ee; 499c9e68d9Seric ENVELOPE *splitenv = NULL; 506103d9b4Seric bool announcequeueup; 519c9e68d9Seric 527880f3e4Seric /* 537880f3e4Seric ** If we have had global, fatal errors, don't bother sending 547880f3e4Seric ** the message at all if we are in SMTP mode. Local errors 557880f3e4Seric ** (e.g., a single address failing) will still cause the other 567880f3e4Seric ** addresses to be sent. 577880f3e4Seric */ 587880f3e4Seric 597880f3e4Seric if (bitset(EF_FATALERRS, e->e_flags) && OpMode == MD_SMTP) 60896b16f6Seric { 61896b16f6Seric e->e_flags |= EF_CLRQUEUE; 62896b16f6Seric return; 63896b16f6Seric } 64896b16f6Seric 659c9e68d9Seric /* determine actual delivery mode */ 669c9e68d9Seric if (mode == SM_DEFAULT) 679c9e68d9Seric { 689c9e68d9Seric mode = e->e_sendmode; 699c9e68d9Seric if (mode != SM_VERIFY && 709c9e68d9Seric shouldqueue(e->e_msgpriority, e->e_ctime)) 719c9e68d9Seric mode = SM_QUEUE; 726103d9b4Seric announcequeueup = mode == SM_QUEUE; 739c9e68d9Seric } 746103d9b4Seric else 756103d9b4Seric announcequeueup = FALSE; 769c9e68d9Seric 779c9e68d9Seric if (tTd(13, 1)) 789c9e68d9Seric { 790e484fe5Seric printf("\n===== SENDALL: mode %c, id %s, e_from ", 800e484fe5Seric mode, e->e_id); 819c9e68d9Seric printaddr(&e->e_from, FALSE); 829c9e68d9Seric printf("sendqueue:\n"); 839c9e68d9Seric printaddr(e->e_sendqueue, TRUE); 849c9e68d9Seric } 859c9e68d9Seric 869c9e68d9Seric /* 879c9e68d9Seric ** Do any preprocessing necessary for the mode we are running. 889c9e68d9Seric ** Check to make sure the hop count is reasonable. 899c9e68d9Seric ** Delete sends to the sender in mailing lists. 909c9e68d9Seric */ 919c9e68d9Seric 929c9e68d9Seric CurEnv = e; 939c9e68d9Seric 949c9e68d9Seric if (e->e_hopcount > MaxHopCount) 959c9e68d9Seric { 969c9e68d9Seric errno = 0; 974bb8b0fdSeric syserr("554 too many hops %d (%d max): from %s via %s, to %s", 989c9e68d9Seric e->e_hopcount, MaxHopCount, e->e_from.q_paddr, 994bb8b0fdSeric RealHostName, e->e_sendqueue->q_paddr); 1009c9e68d9Seric return; 1019c9e68d9Seric } 1029c9e68d9Seric 103b8004690Seric /* 104b8004690Seric ** Do sender deletion. 105b8004690Seric ** 106b8004690Seric ** If the sender has the QQUEUEUP flag set, skip this. 107b8004690Seric ** This can happen if the name server is hosed when you 108b8004690Seric ** are trying to send mail. The result is that the sender 109b8004690Seric ** is instantiated in the queue as a recipient. 110b8004690Seric */ 111b8004690Seric 112e76a6a8fSeric if (!bitset(EF_METOO, e->e_flags) && 113e76a6a8fSeric !bitset(QQUEUEUP, e->e_from.q_flags)) 1149c9e68d9Seric { 1159c9e68d9Seric if (tTd(13, 5)) 1169c9e68d9Seric { 1179c9e68d9Seric printf("sendall: QDONTSEND "); 1189c9e68d9Seric printaddr(&e->e_from, FALSE); 1199c9e68d9Seric } 1209c9e68d9Seric e->e_from.q_flags |= QDONTSEND; 1219c9e68d9Seric (void) recipient(&e->e_from, &e->e_sendqueue, e); 1229c9e68d9Seric } 1239c9e68d9Seric 124ce5531bdSeric /* 125ce5531bdSeric ** Handle alias owners. 126ce5531bdSeric ** 127ce5531bdSeric ** We scan up the q_alias chain looking for owners. 128ce5531bdSeric ** We discard owners that are the same as the return path. 129ce5531bdSeric */ 130ce5531bdSeric 131ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 132ce5531bdSeric { 133ce5531bdSeric register struct address *a; 134ce5531bdSeric 135ce5531bdSeric for (a = q; a != NULL && a->q_owner == NULL; a = a->q_alias) 136ce5531bdSeric continue; 137ce5531bdSeric if (a != NULL) 138ce5531bdSeric q->q_owner = a->q_owner; 139ce5531bdSeric 140ce5531bdSeric if (q->q_owner != NULL && 141ce5531bdSeric !bitset(QDONTSEND, q->q_flags) && 142ce5531bdSeric strcmp(q->q_owner, e->e_from.q_paddr) == 0) 143ce5531bdSeric q->q_owner = NULL; 144ce5531bdSeric } 145ce5531bdSeric 146ce5531bdSeric owner = ""; 147ce5531bdSeric otherowners = 1; 148ce5531bdSeric while (owner != NULL && otherowners > 0) 149ce5531bdSeric { 150ce5531bdSeric owner = NULL; 151ce5531bdSeric otherowners = 0; 152ce5531bdSeric 153ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 154ce5531bdSeric { 155ce5531bdSeric if (bitset(QDONTSEND, q->q_flags)) 156ce5531bdSeric continue; 157ce5531bdSeric 158ce5531bdSeric if (q->q_owner != NULL) 159ce5531bdSeric { 160ce5531bdSeric if (owner == NULL) 161ce5531bdSeric owner = q->q_owner; 162ce5531bdSeric else if (owner != q->q_owner) 163ce5531bdSeric { 164ce5531bdSeric if (strcmp(owner, q->q_owner) == 0) 165ce5531bdSeric { 166ce5531bdSeric /* make future comparisons cheap */ 167ce5531bdSeric q->q_owner = owner; 168ce5531bdSeric } 169ce5531bdSeric else 170ce5531bdSeric { 171ce5531bdSeric otherowners++; 172ce5531bdSeric } 173ce5531bdSeric owner = q->q_owner; 174ce5531bdSeric } 175ce5531bdSeric } 176ce5531bdSeric else 177ce5531bdSeric { 178ce5531bdSeric otherowners++; 179ce5531bdSeric } 180ce5531bdSeric } 181ce5531bdSeric 182ce5531bdSeric if (owner != NULL && otherowners > 0) 183ce5531bdSeric { 184ce5531bdSeric extern HDR *copyheader(); 185ce5531bdSeric extern ADDRESS *copyqueue(); 186ce5531bdSeric 187ce5531bdSeric /* 188ce5531bdSeric ** Split this envelope into two. 189ce5531bdSeric */ 190ce5531bdSeric 191ce5531bdSeric ee = (ENVELOPE *) xalloc(sizeof(ENVELOPE)); 192ce5531bdSeric *ee = *e; 193ce5531bdSeric ee->e_id = NULL; 194ce5531bdSeric (void) queuename(ee, '\0'); 195ce5531bdSeric 196ce5531bdSeric if (tTd(13, 1)) 197ce5531bdSeric printf("sendall: split %s into %s\n", 198ce5531bdSeric e->e_id, ee->e_id); 199ce5531bdSeric 200ce5531bdSeric ee->e_header = copyheader(e->e_header); 201ce5531bdSeric ee->e_sendqueue = copyqueue(e->e_sendqueue); 202ce5531bdSeric ee->e_errorqueue = copyqueue(e->e_errorqueue); 203ce5531bdSeric ee->e_flags = e->e_flags & ~(EF_INQUEUE|EF_CLRQUEUE|EF_FATALERRS); 204ce5531bdSeric setsender(owner, ee, NULL, TRUE); 205ce5531bdSeric if (tTd(13, 5)) 206ce5531bdSeric { 207ce5531bdSeric printf("sendall(split): QDONTSEND "); 208ce5531bdSeric printaddr(&ee->e_from, FALSE); 209ce5531bdSeric } 210ce5531bdSeric ee->e_from.q_flags |= QDONTSEND; 211ce5531bdSeric ee->e_dfp = NULL; 212ce5531bdSeric ee->e_xfp = NULL; 213ce5531bdSeric ee->e_lockfp = NULL; 214ce5531bdSeric ee->e_df = NULL; 215ce5531bdSeric ee->e_errormode = EM_MAIL; 216ce5531bdSeric ee->e_sibling = splitenv; 217ce5531bdSeric splitenv = ee; 218ce5531bdSeric 219ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 220ce5531bdSeric if (q->q_owner == owner) 221ce5531bdSeric q->q_flags |= QDONTSEND; 222ce5531bdSeric for (q = ee->e_sendqueue; q != NULL; q = q->q_next) 223ce5531bdSeric if (q->q_owner != owner) 224ce5531bdSeric q->q_flags |= QDONTSEND; 225ce5531bdSeric 226ce5531bdSeric if (e->e_df != NULL && mode != SM_VERIFY) 227ce5531bdSeric { 228ce5531bdSeric ee->e_dfp = NULL; 229da662164Seric ee->e_df = queuename(ee, 'd'); 230da662164Seric ee->e_df = newstr(ee->e_df); 231ce5531bdSeric if (link(e->e_df, ee->e_df) < 0) 232ce5531bdSeric { 233ce5531bdSeric syserr("sendall: link(%s, %s)", 234ce5531bdSeric e->e_df, ee->e_df); 235ce5531bdSeric } 236ce5531bdSeric } 237ce5531bdSeric 238ce5531bdSeric if (mode != SM_VERIFY) 239ce5531bdSeric openxscript(ee); 240ce5531bdSeric #ifdef LOG 241ce5531bdSeric if (LogLevel > 4) 242ce5531bdSeric syslog(LOG_INFO, "%s: clone %s", 243ce5531bdSeric ee->e_id, e->e_id); 244ce5531bdSeric #endif 245ce5531bdSeric } 246ce5531bdSeric } 247ce5531bdSeric 248ce5531bdSeric if (owner != NULL) 249ce5531bdSeric { 250ce5531bdSeric setsender(owner, e, NULL, TRUE); 251ce5531bdSeric if (tTd(13, 5)) 252ce5531bdSeric { 253ce5531bdSeric printf("sendall(owner): QDONTSEND "); 254ce5531bdSeric printaddr(&e->e_from, FALSE); 255ce5531bdSeric } 256ce5531bdSeric e->e_from.q_flags |= QDONTSEND; 257ce5531bdSeric e->e_errormode = EM_MAIL; 258ce5531bdSeric } 259ce5531bdSeric 260c1ac89b1Seric # ifdef QUEUE 261c1ac89b1Seric if ((mode == SM_QUEUE || mode == SM_FORK || 262c1ac89b1Seric (mode != SM_VERIFY && SuperSafe)) && 263c1ac89b1Seric !bitset(EF_INQUEUE, e->e_flags)) 264c1ac89b1Seric { 265c1ac89b1Seric /* be sure everything is instantiated in the queue */ 2666103d9b4Seric queueup(e, TRUE, announcequeueup); 267ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 2686103d9b4Seric queueup(ee, TRUE, announcequeueup); 269c1ac89b1Seric } 270c1ac89b1Seric #endif /* QUEUE */ 271c1ac89b1Seric 272ce5531bdSeric if (splitenv != NULL) 273ce5531bdSeric { 274ce5531bdSeric if (tTd(13, 1)) 275ce5531bdSeric { 276ce5531bdSeric printf("\nsendall: Split queue; remaining queue:\n"); 277ce5531bdSeric printaddr(e->e_sendqueue, TRUE); 278ce5531bdSeric } 279ce5531bdSeric 280ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 281ce5531bdSeric { 282ce5531bdSeric CurEnv = ee; 283ce5531bdSeric sendenvelope(ee, mode); 284ce5531bdSeric } 285ce5531bdSeric 286ce5531bdSeric CurEnv = e; 287ce5531bdSeric } 288ce5531bdSeric sendenvelope(e, mode); 289ce5531bdSeric 290ce5531bdSeric for (; splitenv != NULL; splitenv = splitenv->e_sibling) 291ce5531bdSeric dropenvelope(splitenv); 292ce5531bdSeric } 293ce5531bdSeric 294ce5531bdSeric sendenvelope(e, mode) 295ce5531bdSeric register ENVELOPE *e; 296ce5531bdSeric char mode; 297ce5531bdSeric { 298ce5531bdSeric bool oldverbose; 299ce5531bdSeric int pid; 300ce5531bdSeric register ADDRESS *q; 3016b2765c6Seric char *qf; 3026b2765c6Seric char *id; 303ce5531bdSeric 3047880f3e4Seric /* 3057880f3e4Seric ** If we have had global, fatal errors, don't bother sending 3067880f3e4Seric ** the message at all if we are in SMTP mode. Local errors 3077880f3e4Seric ** (e.g., a single address failing) will still cause the other 3087880f3e4Seric ** addresses to be sent. 3097880f3e4Seric */ 3107880f3e4Seric 3117880f3e4Seric if (bitset(EF_FATALERRS, e->e_flags) && OpMode == MD_SMTP) 3127880f3e4Seric { 3137880f3e4Seric e->e_flags |= EF_CLRQUEUE; 3147880f3e4Seric return; 3157880f3e4Seric } 3167880f3e4Seric 317ce5531bdSeric oldverbose = Verbose; 318c1ac89b1Seric switch (mode) 319c1ac89b1Seric { 320c1ac89b1Seric case SM_VERIFY: 321c1ac89b1Seric Verbose = TRUE; 322c1ac89b1Seric break; 323c1ac89b1Seric 324c1ac89b1Seric case SM_QUEUE: 325c1ac89b1Seric queueonly: 326c1ac89b1Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 327c1ac89b1Seric return; 328c1ac89b1Seric 329c1ac89b1Seric case SM_FORK: 330c1ac89b1Seric if (e->e_xfp != NULL) 331c1ac89b1Seric (void) fflush(e->e_xfp); 332c1ac89b1Seric 3332b9178d3Seric # ifndef HASFLOCK 334c1ac89b1Seric /* 3356b2765c6Seric ** Since fcntl locking has the interesting semantic that 3366b2765c6Seric ** the lock is owned by a process, not by an open file 3376b2765c6Seric ** descriptor, we have to flush this to the queue, and 3386b2765c6Seric ** then restart from scratch in the child. 339c1ac89b1Seric */ 340c1ac89b1Seric 3416b2765c6Seric /* save id for future use */ 3426b2765c6Seric id = e->e_id; 3436b2765c6Seric 3446b2765c6Seric /* now drop the envelope in the parent */ 3456b2765c6Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 34644622ea3Seric e->e_flags &= ~EF_FATALERRS; 3476b2765c6Seric dropenvelope(e); 3486b2765c6Seric 3496b2765c6Seric /* and reacquire in the child */ 3506b2765c6Seric (void) dowork(id, TRUE, FALSE, e); 3516b2765c6Seric 3526b2765c6Seric return; 3536b2765c6Seric 3546b2765c6Seric # else /* HASFLOCK */ 355c1ac89b1Seric 356c1ac89b1Seric pid = fork(); 357c1ac89b1Seric if (pid < 0) 358c1ac89b1Seric { 359c1ac89b1Seric goto queueonly; 360c1ac89b1Seric } 361c1ac89b1Seric else if (pid > 0) 362c1ac89b1Seric { 3630e484fe5Seric /* be sure we leave the temp files to our child */ 3640e484fe5Seric /* can't call unlockqueue to avoid unlink of xfp */ 3650e484fe5Seric if (e->e_lockfp != NULL) 3660e484fe5Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 3670e484fe5Seric e->e_lockfp = NULL; 3680e484fe5Seric 3690e484fe5Seric /* close any random open files in the envelope */ 3700e484fe5Seric closexscript(e); 3710e484fe5Seric if (e->e_dfp != NULL) 3720e484fe5Seric (void) xfclose(e->e_dfp, "sendenvelope", e->e_df); 3730e484fe5Seric e->e_dfp = NULL; 3740e484fe5Seric e->e_id = e->e_df = NULL; 375c1ac89b1Seric return; 376c1ac89b1Seric } 377c1ac89b1Seric 378c1ac89b1Seric /* double fork to avoid zombies */ 379c1ac89b1Seric if (fork() > 0) 380c1ac89b1Seric exit(EX_OK); 381c1ac89b1Seric 382c1ac89b1Seric /* be sure we are immune from the terminal */ 3837880f3e4Seric disconnect(1, e); 384c1ac89b1Seric 385c1ac89b1Seric /* 386c1ac89b1Seric ** Close any cached connections. 387c1ac89b1Seric ** 388c1ac89b1Seric ** We don't send the QUIT protocol because the parent 389c1ac89b1Seric ** still knows about the connection. 390c1ac89b1Seric ** 391c1ac89b1Seric ** This should only happen when delivering an error 392c1ac89b1Seric ** message. 393c1ac89b1Seric */ 394c1ac89b1Seric 395c1ac89b1Seric mci_flush(FALSE, NULL); 396c1ac89b1Seric 3976b2765c6Seric # endif /* HASFLOCK */ 3986b2765c6Seric 399c1ac89b1Seric break; 400c1ac89b1Seric } 401c1ac89b1Seric 402c1ac89b1Seric /* 4039c9e68d9Seric ** Run through the list and send everything. 4045288e21aSeric ** 4055288e21aSeric ** Set EF_GLOBALERRS so that error messages during delivery 4065288e21aSeric ** result in returned mail. 4079c9e68d9Seric */ 4089c9e68d9Seric 4099c9e68d9Seric e->e_nsent = 0; 4105288e21aSeric e->e_flags |= EF_GLOBALERRS; 411faad2b16Seric 412faad2b16Seric /* now run through the queue */ 4139c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 4149c9e68d9Seric { 415fdc75a0fSeric #ifdef XDEBUG 416fdc75a0fSeric char wbuf[MAXNAME + 20]; 417fdc75a0fSeric 418fdc75a0fSeric (void) sprintf(wbuf, "sendall(%s)", q->q_paddr); 419fdc75a0fSeric checkfd012(wbuf); 420fdc75a0fSeric #endif 4219c9e68d9Seric if (mode == SM_VERIFY) 4229c9e68d9Seric { 4239c9e68d9Seric e->e_to = q->q_paddr; 4249c9e68d9Seric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4258dfca105Seric { 4268dfca105Seric message("deliverable: mailer %s, host %s, user %s", 4278dfca105Seric q->q_mailer->m_name, 4288dfca105Seric q->q_host, 4298dfca105Seric q->q_user); 4308dfca105Seric } 4319c9e68d9Seric } 4329c9e68d9Seric else if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4339c9e68d9Seric { 4349c9e68d9Seric # ifdef QUEUE 4359c9e68d9Seric /* 4369c9e68d9Seric ** Checkpoint the send list every few addresses 4379c9e68d9Seric */ 4389c9e68d9Seric 4399c9e68d9Seric if (e->e_nsent >= CheckpointInterval) 4409c9e68d9Seric { 4419c9e68d9Seric queueup(e, TRUE, FALSE); 4429c9e68d9Seric e->e_nsent = 0; 4439c9e68d9Seric } 4449c9e68d9Seric # endif /* QUEUE */ 4459c9e68d9Seric (void) deliver(e, q); 4469c9e68d9Seric } 4479c9e68d9Seric } 4489c9e68d9Seric Verbose = oldverbose; 4499c9e68d9Seric 450fdc75a0fSeric #ifdef XDEBUG 451fdc75a0fSeric checkfd012("end of sendenvelope"); 452fdc75a0fSeric #endif 453fdc75a0fSeric 4549c9e68d9Seric if (mode == SM_FORK) 4559c9e68d9Seric finis(); 4569c9e68d9Seric } 4579c9e68d9Seric /* 4589c9e68d9Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 4599c9e68d9Seric ** 4609c9e68d9Seric ** This MUST be a macro, since after a vfork we are running 4619c9e68d9Seric ** two processes on the same stack!!! 4629c9e68d9Seric ** 4639c9e68d9Seric ** Parameters: 4649c9e68d9Seric ** none. 4659c9e68d9Seric ** 4669c9e68d9Seric ** Returns: 4679c9e68d9Seric ** From a macro??? You've got to be kidding! 4689c9e68d9Seric ** 4699c9e68d9Seric ** Side Effects: 4709c9e68d9Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 4719c9e68d9Seric ** pid of child in parent, zero in child. 4729c9e68d9Seric ** -1 on unrecoverable error. 4739c9e68d9Seric ** 4749c9e68d9Seric ** Notes: 4759c9e68d9Seric ** I'm awfully sorry this looks so awful. That's 4769c9e68d9Seric ** vfork for you..... 4779c9e68d9Seric */ 4789c9e68d9Seric 4799c9e68d9Seric # define NFORKTRIES 5 4809c9e68d9Seric 4819c9e68d9Seric # ifndef FORK 4829c9e68d9Seric # define FORK fork 4839c9e68d9Seric # endif 4849c9e68d9Seric 4859c9e68d9Seric # define DOFORK(fORKfN) \ 4869c9e68d9Seric {\ 4879c9e68d9Seric register int i;\ 4889c9e68d9Seric \ 4899c9e68d9Seric for (i = NFORKTRIES; --i >= 0; )\ 4909c9e68d9Seric {\ 4919c9e68d9Seric pid = fORKfN();\ 4929c9e68d9Seric if (pid >= 0)\ 4939c9e68d9Seric break;\ 4949c9e68d9Seric if (i > 0)\ 4959c9e68d9Seric sleep((unsigned) NFORKTRIES - i);\ 4969c9e68d9Seric }\ 4979c9e68d9Seric } 4989c9e68d9Seric /* 4999c9e68d9Seric ** DOFORK -- simple fork interface to DOFORK. 5009c9e68d9Seric ** 5019c9e68d9Seric ** Parameters: 5029c9e68d9Seric ** none. 5039c9e68d9Seric ** 5049c9e68d9Seric ** Returns: 5059c9e68d9Seric ** pid of child in parent. 5069c9e68d9Seric ** zero in child. 5079c9e68d9Seric ** -1 on error. 5089c9e68d9Seric ** 5099c9e68d9Seric ** Side Effects: 5109c9e68d9Seric ** returns twice, once in parent and once in child. 5119c9e68d9Seric */ 5129c9e68d9Seric 5139c9e68d9Seric dofork() 5149c9e68d9Seric { 5159c9e68d9Seric register int pid; 5169c9e68d9Seric 5179c9e68d9Seric DOFORK(fork); 5189c9e68d9Seric return (pid); 5199c9e68d9Seric } 5209c9e68d9Seric /* 52113bbc08cSeric ** DELIVER -- Deliver a message to a list of addresses. 52213bbc08cSeric ** 52313bbc08cSeric ** This routine delivers to everyone on the same host as the 52413bbc08cSeric ** user on the head of the list. It is clever about mailers 52513bbc08cSeric ** that don't handle multiple users. It is NOT guaranteed 52613bbc08cSeric ** that it will deliver to all these addresses however -- so 52713bbc08cSeric ** deliver should be called once for each address on the 52813bbc08cSeric ** list. 52925a99e2eSeric ** 53025a99e2eSeric ** Parameters: 531588cad61Seric ** e -- the envelope to deliver. 532c77d1c25Seric ** firstto -- head of the address list to deliver to. 53325a99e2eSeric ** 53425a99e2eSeric ** Returns: 53525a99e2eSeric ** zero -- successfully delivered. 53625a99e2eSeric ** else -- some failure, see ExitStat for more info. 53725a99e2eSeric ** 53825a99e2eSeric ** Side Effects: 53925a99e2eSeric ** The standard input is passed off to someone. 54025a99e2eSeric */ 54125a99e2eSeric 542588cad61Seric deliver(e, firstto) 543588cad61Seric register ENVELOPE *e; 544c77d1c25Seric ADDRESS *firstto; 54525a99e2eSeric { 54678442df3Seric char *host; /* host being sent to */ 54778442df3Seric char *user; /* user being sent to */ 54825a99e2eSeric char **pvp; 5495dfc646bSeric register char **mvp; 55025a99e2eSeric register char *p; 551588cad61Seric register MAILER *m; /* mailer for this recipient */ 5526259796dSeric ADDRESS *ctladdr; 553b31e7f2bSeric register MCI *mci; 554c77d1c25Seric register ADDRESS *to = firstto; 555c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 556772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 557911693bfSbostic int rcode; /* response code */ 558e103b48fSeric char *firstsig; /* signature of firstto */ 5599c9e68d9Seric int pid; 5609c9e68d9Seric char *curhost; 5619c9e68d9Seric int mpvect[2]; 5629c9e68d9Seric int rpvect[2]; 563ee6bf8dfSeric char *pv[MAXPV+1]; 564579ef0ddSeric char tobuf[TOBUFSIZE]; /* text line of to people */ 565ee6bf8dfSeric char buf[MAXNAME]; 566c23ed322Seric char rpathbuf[MAXNAME]; /* translated return path */ 567fabb3bd4Seric extern int checkcompat(); 5689c9e68d9Seric extern FILE *fdopen(); 569*df106f0bSeric extern char SmtpError[]; 57025a99e2eSeric 57135490626Seric errno = 0; 572ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags)) 5735dfc646bSeric return (0); 57425a99e2eSeric 575134746fbSeric #ifdef NAMED_BIND 576912a731aSbostic /* unless interactive, try twice, over a minute */ 577912a731aSbostic if (OpMode == MD_DAEMON || OpMode == MD_SMTP) { 578912a731aSbostic _res.retrans = 30; 579912a731aSbostic _res.retry = 2; 580912a731aSbostic } 581d4bd8f0eSbostic #endif 582912a731aSbostic 58351552439Seric m = to->q_mailer; 58451552439Seric host = to->q_host; 585c9be6216Seric CurEnv = e; /* just in case */ 5864384d521Seric e->e_statmsg = NULL; 587*df106f0bSeric SmtpError[0] = '\0'; 58851552439Seric 5896ef48975Seric if (tTd(10, 1)) 5905dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 59151552439Seric m->m_mno, host, to->q_user); 592f3dbc832Seric 593f3dbc832Seric /* 594f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 595f3dbc832Seric ** connections now, just mark these addresses and return. 596f3dbc832Seric ** This is useful if we want to batch connections to 597f3dbc832Seric ** reduce load. This will cause the messages to be 598f3dbc832Seric ** queued up, and a daemon will come along to send the 599f3dbc832Seric ** messages later. 600f3dbc832Seric ** This should be on a per-mailer basis. 601f3dbc832Seric */ 602f3dbc832Seric 60379aa5155Seric if (NoConnect && bitnset(M_EXPENSIVE, m->m_flags) && !Verbose) 604f3dbc832Seric { 605f3dbc832Seric for (; to != NULL; to = to->q_next) 606f4560e80Seric { 607ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 608c6e18ac5Seric to->q_mailer != m) 609f4560e80Seric continue; 610268a25e1Seric to->q_flags |= QQUEUEUP; 611588cad61Seric e->e_to = to->q_paddr; 61208b25121Seric message("queued"); 6132f624c86Seric if (LogLevel > 8) 61481161401Seric logdelivery(m, NULL, "queued", e); 615f4560e80Seric } 616588cad61Seric e->e_to = NULL; 617f3dbc832Seric return (0); 618f3dbc832Seric } 619f3dbc832Seric 62025a99e2eSeric /* 6215dfc646bSeric ** Do initial argv setup. 6225dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 6235dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 6245dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 6255dfc646bSeric ** code does not check for 'pv' overflow; this places a 6265dfc646bSeric ** manifest lower limit of 4 for MAXPV. 6273bea8136Seric ** The from address rewrite is expected to make 6283bea8136Seric ** the address relative to the other end. 6295dfc646bSeric */ 6305dfc646bSeric 63178442df3Seric /* rewrite from address, using rewriting rules */ 632efe54562Seric rcode = EX_OK; 633efe54562Seric (void) strcpy(rpathbuf, remotename(e->e_from.q_paddr, m, 634efe54562Seric RF_SENDERADDR|RF_CANONICAL, 635efe54562Seric &rcode, e)); 636ee4b0922Seric define('g', rpathbuf, e); /* translated return path */ 637588cad61Seric define('h', host, e); /* to host */ 6385dfc646bSeric Errors = 0; 6395dfc646bSeric pvp = pv; 6405dfc646bSeric *pvp++ = m->m_argv[0]; 6415dfc646bSeric 6425dfc646bSeric /* insert -f or -r flag as appropriate */ 64357fc6f17Seric if (FromFlag && (bitnset(M_FOPT, m->m_flags) || bitnset(M_ROPT, m->m_flags))) 6445dfc646bSeric { 64557fc6f17Seric if (bitnset(M_FOPT, m->m_flags)) 6465dfc646bSeric *pvp++ = "-f"; 6475dfc646bSeric else 6485dfc646bSeric *pvp++ = "-r"; 649c23ed322Seric *pvp++ = newstr(rpathbuf); 6505dfc646bSeric } 6515dfc646bSeric 6525dfc646bSeric /* 6535dfc646bSeric ** Append the other fixed parts of the argv. These run 6545dfc646bSeric ** up to the first entry containing "$u". There can only 6555dfc646bSeric ** be one of these, and there are only a few more slots 6565dfc646bSeric ** in the pv after it. 6575dfc646bSeric */ 6585dfc646bSeric 6595dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 6605dfc646bSeric { 6612bc47524Seric /* can't use strchr here because of sign extension problems */ 6622bc47524Seric while (*p != '\0') 6632bc47524Seric { 6642bc47524Seric if ((*p++ & 0377) == MACROEXPAND) 6652bc47524Seric { 6662bc47524Seric if (*p == 'u') 6675dfc646bSeric break; 6682bc47524Seric } 6692bc47524Seric } 6702bc47524Seric 6712bc47524Seric if (*p != '\0') 6725dfc646bSeric break; 6735dfc646bSeric 6745dfc646bSeric /* this entry is safe -- go ahead and process it */ 675588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 6765dfc646bSeric *pvp++ = newstr(buf); 6775dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 6785dfc646bSeric { 67908b25121Seric syserr("554 Too many parameters to %s before $u", pv[0]); 6805dfc646bSeric return (-1); 6815dfc646bSeric } 6825dfc646bSeric } 683c579ef51Seric 68433db8731Seric /* 68533db8731Seric ** If we have no substitution for the user name in the argument 68633db8731Seric ** list, we know that we must supply the names otherwise -- and 68733db8731Seric ** SMTP is the answer!! 68833db8731Seric */ 68933db8731Seric 6905dfc646bSeric if (*mvp == NULL) 691c579ef51Seric { 692c579ef51Seric /* running SMTP */ 6932c7e1b8dSeric # ifdef SMTP 694c579ef51Seric clever = TRUE; 695c579ef51Seric *pvp = NULL; 6966c2c3107Seric # else /* SMTP */ 69733db8731Seric /* oops! we don't implement SMTP */ 698*df106f0bSeric syserr("554 SMTP style mailer not implemented"); 6992c7e1b8dSeric return (EX_SOFTWARE); 7006c2c3107Seric # endif /* SMTP */ 701c579ef51Seric } 7025dfc646bSeric 7035dfc646bSeric /* 7045dfc646bSeric ** At this point *mvp points to the argument with $u. We 7055dfc646bSeric ** run through our address list and append all the addresses 7065dfc646bSeric ** we can. If we run out of space, do not fret! We can 7075dfc646bSeric ** always send another copy later. 7085dfc646bSeric */ 7095dfc646bSeric 7105dfc646bSeric tobuf[0] = '\0'; 711588cad61Seric e->e_to = tobuf; 7126259796dSeric ctladdr = NULL; 713e103b48fSeric firstsig = hostsignature(firstto->q_mailer, firstto->q_host, e); 7145dfc646bSeric for (; to != NULL; to = to->q_next) 7155dfc646bSeric { 7165dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 71757fc6f17Seric if (tobuf[0] != '\0' && !bitnset(M_MUSER, m->m_flags)) 7185dfc646bSeric break; 7195dfc646bSeric 7205dfc646bSeric /* if already sent or not for this host, don't send */ 721ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 722e103b48fSeric to->q_mailer != firstto->q_mailer || 723e103b48fSeric strcmp(hostsignature(to->q_mailer, to->q_host, e), firstsig) != 0) 7245dfc646bSeric continue; 7256259796dSeric 7264b22ea87Seric /* avoid overflowing tobuf */ 727aa50a568Sbostic if (sizeof tobuf < (strlen(to->q_paddr) + strlen(tobuf) + 2)) 7284b22ea87Seric break; 7294b22ea87Seric 7306ef48975Seric if (tTd(10, 1)) 731772e6e50Seric { 732772e6e50Seric printf("\nsend to "); 733772e6e50Seric printaddr(to, FALSE); 734772e6e50Seric } 735772e6e50Seric 7366259796dSeric /* compute effective uid/gid when sending */ 7377da1035fSeric if (to->q_mailer == ProgMailer) 7386259796dSeric ctladdr = getctladdr(to); 7396259796dSeric 7405dfc646bSeric user = to->q_user; 741588cad61Seric e->e_to = to->q_paddr; 74275f1ade9Seric if (tTd(10, 5)) 74375f1ade9Seric { 74475f1ade9Seric printf("deliver: QDONTSEND "); 74575f1ade9Seric printaddr(to, FALSE); 74675f1ade9Seric } 747ee4b0922Seric to->q_flags |= QDONTSEND; 7485dfc646bSeric 7495dfc646bSeric /* 7505dfc646bSeric ** Check to see that these people are allowed to 7515dfc646bSeric ** talk to each other. 7522a6e0786Seric */ 7532a6e0786Seric 75469582d2fSeric if (m->m_maxsize != 0 && e->e_msgsize > m->m_maxsize) 75569582d2fSeric { 75669582d2fSeric NoReturn = TRUE; 75708b25121Seric usrerr("552 Message is too large; %ld bytes max", m->m_maxsize); 75881161401Seric giveresponse(EX_UNAVAILABLE, m, NULL, e); 75969582d2fSeric continue; 76069582d2fSeric } 761fabb3bd4Seric rcode = checkcompat(to, e); 7621793c9c5Seric if (rcode != EX_OK) 7635dfc646bSeric { 7641000c37aSeric markfailure(e, to, rcode); 76581161401Seric giveresponse(rcode, m, NULL, e); 7665dfc646bSeric continue; 7675dfc646bSeric } 7682a6e0786Seric 7692a6e0786Seric /* 7709ec9501bSeric ** Strip quote bits from names if the mailer is dumb 7719ec9501bSeric ** about them. 77225a99e2eSeric */ 77325a99e2eSeric 77457fc6f17Seric if (bitnset(M_STRIPQ, m->m_flags)) 77525a99e2eSeric { 7761d8f1806Seric stripquotes(user); 7771d8f1806Seric stripquotes(host); 77825a99e2eSeric } 77925a99e2eSeric 780cdb828c5Seric /* hack attack -- delivermail compatibility */ 781cdb828c5Seric if (m == ProgMailer && *user == '|') 782cdb828c5Seric user++; 783cdb828c5Seric 78425a99e2eSeric /* 7853efaed6eSeric ** If an error message has already been given, don't 7863efaed6eSeric ** bother to send to this address. 7873efaed6eSeric ** 7883efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 7893efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 7903efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 7913efaed6eSeric */ 7923efaed6eSeric 7936cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 7943efaed6eSeric continue; 7953efaed6eSeric 796f2fec898Seric /* save statistics.... */ 797588cad61Seric markstats(e, to); 798f2fec898Seric 7993efaed6eSeric /* 80025a99e2eSeric ** See if this user name is "special". 80125a99e2eSeric ** If the user name has a slash in it, assume that this 80251552439Seric ** is a file -- send it off without further ado. Note 80351552439Seric ** that this type of addresses is not processed along 80451552439Seric ** with the others, so we fudge on the To person. 80525a99e2eSeric */ 80625a99e2eSeric 8072c017f8dSeric if (m == FileMailer) 80825a99e2eSeric { 809b31e7f2bSeric rcode = mailfile(user, getctladdr(to), e); 81081161401Seric giveresponse(rcode, m, NULL, e); 811dde5acadSeric if (rcode == EX_OK) 812dde5acadSeric to->q_flags |= QSENT; 8135dfc646bSeric continue; 81425a99e2eSeric } 81525a99e2eSeric 81613bbc08cSeric /* 81713bbc08cSeric ** Address is verified -- add this user to mailer 81813bbc08cSeric ** argv, and add it to the print list of recipients. 81913bbc08cSeric */ 82013bbc08cSeric 821508daeccSeric /* link together the chain of recipients */ 822508daeccSeric to->q_tchain = tochain; 823508daeccSeric tochain = to; 824508daeccSeric 8255dfc646bSeric /* create list of users for error messages */ 826db8841e9Seric (void) strcat(tobuf, ","); 827db8841e9Seric (void) strcat(tobuf, to->q_paddr); 828588cad61Seric define('u', user, e); /* to user */ 829b6f89e6eSeric p = to->q_home; 830b6f89e6eSeric if (p == NULL && ctladdr != NULL) 831b6f89e6eSeric p = ctladdr->q_home; 832b6f89e6eSeric define('z', p, e); /* user's home */ 8335dfc646bSeric 834c579ef51Seric /* 835508daeccSeric ** Expand out this user into argument list. 836c579ef51Seric */ 837c579ef51Seric 838508daeccSeric if (!clever) 839c579ef51Seric { 840588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8415dfc646bSeric *pvp++ = newstr(buf); 8425dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 8435dfc646bSeric { 8445dfc646bSeric /* allow some space for trailing parms */ 8455dfc646bSeric break; 8465dfc646bSeric } 8475dfc646bSeric } 848c579ef51Seric } 8495dfc646bSeric 850145b49b1Seric /* see if any addresses still exist */ 851145b49b1Seric if (tobuf[0] == '\0') 852c579ef51Seric { 853588cad61Seric define('g', (char *) NULL, e); 854145b49b1Seric return (0); 855c579ef51Seric } 856145b49b1Seric 8575dfc646bSeric /* print out messages as full list */ 85863780dbdSeric e->e_to = tobuf + 1; 8595dfc646bSeric 8605dfc646bSeric /* 8615dfc646bSeric ** Fill out any parameters after the $u parameter. 8625dfc646bSeric */ 8635dfc646bSeric 864c579ef51Seric while (!clever && *++mvp != NULL) 8655dfc646bSeric { 866588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8675dfc646bSeric *pvp++ = newstr(buf); 8685dfc646bSeric if (pvp >= &pv[MAXPV]) 86908b25121Seric syserr("554 deliver: pv overflow after $u for %s", pv[0]); 8705dfc646bSeric } 8715dfc646bSeric *pvp++ = NULL; 8725dfc646bSeric 87325a99e2eSeric /* 87425a99e2eSeric ** Call the mailer. 8756328bdf7Seric ** The argument vector gets built, pipes 87625a99e2eSeric ** are created as necessary, and we fork & exec as 8776328bdf7Seric ** appropriate. 878c579ef51Seric ** If we are running SMTP, we just need to clean up. 87925a99e2eSeric */ 88025a99e2eSeric 8817ee87e5fSeric if (ctladdr == NULL && m != ProgMailer) 88286b26461Seric ctladdr = &e->e_from; 883134746fbSeric #ifdef NAMED_BIND 8842bcc6d2dSeric if (ConfigLevel < 2) 885912a731aSbostic _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 886134746fbSeric #endif 8879c9e68d9Seric 8889c9e68d9Seric if (tTd(11, 1)) 889134746fbSeric { 8909c9e68d9Seric printf("openmailer:"); 8919c9e68d9Seric printav(pv); 8929c9e68d9Seric } 8939c9e68d9Seric errno = 0; 8949c9e68d9Seric 8959c9e68d9Seric CurHostName = m->m_mailer; 8969c9e68d9Seric 8979c9e68d9Seric /* 8989c9e68d9Seric ** Deal with the special case of mail handled through an IPC 8999c9e68d9Seric ** connection. 9009c9e68d9Seric ** In this case we don't actually fork. We must be 9019c9e68d9Seric ** running SMTP for this to work. We will return a 9029c9e68d9Seric ** zero pid to indicate that we are running IPC. 9039c9e68d9Seric ** We also handle a debug version that just talks to stdin/out. 9049c9e68d9Seric */ 9059c9e68d9Seric 9069c9e68d9Seric curhost = NULL; 907c931b82bSeric SmtpPhase = NULL; 908*df106f0bSeric mci = NULL; 9099c9e68d9Seric 9107febfd66Seric #ifdef XDEBUG 9117febfd66Seric { 9127febfd66Seric char wbuf[MAXLINE]; 9137febfd66Seric 9147febfd66Seric /* make absolutely certain 0, 1, and 2 are in use */ 9157febfd66Seric sprintf(wbuf, "%s... openmailer(%s)", e->e_to, m->m_name); 9167febfd66Seric checkfd012(wbuf); 9177febfd66Seric } 9187febfd66Seric #endif 9197febfd66Seric 9209c9e68d9Seric /* check for Local Person Communication -- not for mortals!!! */ 9219c9e68d9Seric if (strcmp(m->m_mailer, "[LPC]") == 0) 9229c9e68d9Seric { 9239c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 9249c9e68d9Seric bzero((char *) mci, sizeof *mci); 9259c9e68d9Seric mci->mci_in = stdin; 9269c9e68d9Seric mci->mci_out = stdout; 9279c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 9289c9e68d9Seric mci->mci_mailer = m; 9299c9e68d9Seric } 9309c9e68d9Seric else if (strcmp(m->m_mailer, "[IPC]") == 0 || 9319c9e68d9Seric strcmp(m->m_mailer, "[TCP]") == 0) 9329c9e68d9Seric { 9339c9e68d9Seric #ifdef DAEMON 9349c9e68d9Seric register int i; 9359c9e68d9Seric register u_short port; 9369c9e68d9Seric 9379c9e68d9Seric CurHostName = pv[1]; 9389c9e68d9Seric curhost = hostsignature(m, pv[1], e); 9399c9e68d9Seric 9409c9e68d9Seric if (curhost == NULL || curhost[0] == '\0') 9419c9e68d9Seric { 9429c9e68d9Seric syserr("null signature"); 943845e533cSeric rcode = EX_OSERR; 944b31e7f2bSeric goto give_up; 945b31e7f2bSeric } 9469c9e68d9Seric 9479c9e68d9Seric if (!clever) 9489c9e68d9Seric { 9499c9e68d9Seric syserr("554 non-clever IPC"); 950*df106f0bSeric rcode = EX_CONFIG; 9519c9e68d9Seric goto give_up; 9529c9e68d9Seric } 9539c9e68d9Seric if (pv[2] != NULL) 9549c9e68d9Seric port = atoi(pv[2]); 9559c9e68d9Seric else 9569c9e68d9Seric port = 0; 9579c9e68d9Seric tryhost: 9589c9e68d9Seric while (*curhost != '\0') 9599c9e68d9Seric { 9609c9e68d9Seric register char *p; 9619c9e68d9Seric static char hostbuf[MAXNAME]; 9629c9e68d9Seric 9639c9e68d9Seric /* pull the next host from the signature */ 9649c9e68d9Seric p = strchr(curhost, ':'); 9659c9e68d9Seric if (p == NULL) 9669c9e68d9Seric p = &curhost[strlen(curhost)]; 967*df106f0bSeric if (p == curhost) 968*df106f0bSeric { 969*df106f0bSeric syserr("deliver: null host name in signature"); 970*df106f0bSeric continue; 971*df106f0bSeric } 9729c9e68d9Seric strncpy(hostbuf, curhost, p - curhost); 9739c9e68d9Seric hostbuf[p - curhost] = '\0'; 9749c9e68d9Seric if (*p != '\0') 9759c9e68d9Seric p++; 9769c9e68d9Seric curhost = p; 9779c9e68d9Seric 9789c9e68d9Seric /* see if we already know that this host is fried */ 9799c9e68d9Seric CurHostName = hostbuf; 9809c9e68d9Seric mci = mci_get(hostbuf, m); 9819c9e68d9Seric if (mci->mci_state != MCIS_CLOSED) 9829c9e68d9Seric { 9839c9e68d9Seric if (tTd(11, 1)) 9849c9e68d9Seric { 9859c9e68d9Seric printf("openmailer: "); 9869c9e68d9Seric mci_dump(mci); 9879c9e68d9Seric } 9889c9e68d9Seric CurHostName = mci->mci_host; 9899c9e68d9Seric break; 9909c9e68d9Seric } 9919c9e68d9Seric mci->mci_mailer = m; 9929c9e68d9Seric if (mci->mci_exitstat != EX_OK) 9939c9e68d9Seric continue; 9949c9e68d9Seric 9959c9e68d9Seric /* try the connection */ 9969c9e68d9Seric setproctitle("%s %s: %s", e->e_id, hostbuf, "user open"); 9979c9e68d9Seric message("Connecting to %s (%s)...", 9989c9e68d9Seric hostbuf, m->m_name); 9999c9e68d9Seric i = makeconnection(hostbuf, port, mci, 10009c9e68d9Seric bitnset(M_SECURE_PORT, m->m_flags)); 10019c9e68d9Seric mci->mci_exitstat = i; 10029c9e68d9Seric mci->mci_errno = errno; 1003f170942cSeric #ifdef NAMED_BIND 1004f170942cSeric mci->mci_herrno = h_errno; 1005f170942cSeric #endif 10069c9e68d9Seric if (i == EX_OK) 10079c9e68d9Seric { 10089c9e68d9Seric mci->mci_state = MCIS_OPENING; 10099c9e68d9Seric mci_cache(mci); 1010f170942cSeric if (TrafficLogFile != NULL) 1011f170942cSeric fprintf(TrafficLogFile, "%05d == CONNECT %s\n", 1012f170942cSeric getpid(), hostbuf); 10139c9e68d9Seric break; 10149c9e68d9Seric } 10159c9e68d9Seric else if (tTd(11, 1)) 10169c9e68d9Seric printf("openmailer: makeconnection => stat=%d, errno=%d\n", 10179c9e68d9Seric i, errno); 10189c9e68d9Seric 10199c9e68d9Seric /* enter status of this host */ 10209c9e68d9Seric setstat(i); 1021*df106f0bSeric 1022*df106f0bSeric /* should print some message here for -v mode */ 1023*df106f0bSeric } 1024*df106f0bSeric if (mci == NULL) 1025*df106f0bSeric { 1026*df106f0bSeric syserr("deliver: no host name"); 1027*df106f0bSeric rcode = EX_OSERR; 1028*df106f0bSeric goto give_up; 10299c9e68d9Seric } 10309c9e68d9Seric mci->mci_pid = 0; 10319c9e68d9Seric #else /* no DAEMON */ 10329c9e68d9Seric syserr("554 openmailer: no IPC"); 10339c9e68d9Seric if (tTd(11, 1)) 10349c9e68d9Seric printf("openmailer: NULL\n"); 1035*df106f0bSeric rcode = EX_UNAVAILABLE; 1036*df106f0bSeric goto give_up; 10379c9e68d9Seric #endif /* DAEMON */ 10389c9e68d9Seric } 10399c9e68d9Seric else 10409c9e68d9Seric { 1041f170942cSeric if (TrafficLogFile != NULL) 10420e3bfef5Seric { 1043f170942cSeric char **av; 1044f170942cSeric 1045f170942cSeric fprintf(TrafficLogFile, "%05d === EXEC", getpid()); 1046f170942cSeric for (av = pv; *av != NULL; av++) 1047f170942cSeric fprintf(TrafficLogFile, " %s", *av); 1048f170942cSeric fprintf(TrafficLogFile, "\n"); 10496fe8c3bcSeric } 10506fe8c3bcSeric 10519c9e68d9Seric /* create a pipe to shove the mail through */ 10529c9e68d9Seric if (pipe(mpvect) < 0) 10539c9e68d9Seric { 10540e3bfef5Seric syserr("%s... openmailer(%s): pipe (to mailer)", 10550e3bfef5Seric e->e_to, m->m_name); 10569c9e68d9Seric if (tTd(11, 1)) 10579c9e68d9Seric printf("openmailer: NULL\n"); 10589c9e68d9Seric rcode = EX_OSERR; 10599c9e68d9Seric goto give_up; 10609c9e68d9Seric } 10619c9e68d9Seric 10629c9e68d9Seric /* if this mailer speaks smtp, create a return pipe */ 10639c9e68d9Seric if (clever && pipe(rpvect) < 0) 10649c9e68d9Seric { 10650e3bfef5Seric syserr("%s... openmailer(%s): pipe (from mailer)", 10660e3bfef5Seric e->e_to, m->m_name); 10679c9e68d9Seric (void) close(mpvect[0]); 10689c9e68d9Seric (void) close(mpvect[1]); 10699c9e68d9Seric if (tTd(11, 1)) 10709c9e68d9Seric printf("openmailer: NULL\n"); 10719c9e68d9Seric rcode = EX_OSERR; 10729c9e68d9Seric goto give_up; 10739c9e68d9Seric } 10749c9e68d9Seric 10759c9e68d9Seric /* 10769c9e68d9Seric ** Actually fork the mailer process. 10779c9e68d9Seric ** DOFORK is clever about retrying. 10789c9e68d9Seric ** 10799c9e68d9Seric ** Dispose of SIGCHLD signal catchers that may be laying 10809c9e68d9Seric ** around so that endmail will get it. 10819c9e68d9Seric */ 10829c9e68d9Seric 10839c9e68d9Seric if (e->e_xfp != NULL) 10849c9e68d9Seric (void) fflush(e->e_xfp); /* for debugging */ 10859c9e68d9Seric (void) fflush(stdout); 10869c9e68d9Seric # ifdef SIGCHLD 10872b9178d3Seric (void) setsignal(SIGCHLD, SIG_DFL); 10889c9e68d9Seric # endif /* SIGCHLD */ 10899c9e68d9Seric DOFORK(FORK); 10909c9e68d9Seric /* pid is set by DOFORK */ 10919c9e68d9Seric if (pid < 0) 10929c9e68d9Seric { 10939c9e68d9Seric /* failure */ 10940e3bfef5Seric syserr("%s... openmailer(%s): cannot fork", 10950e3bfef5Seric e->e_to, m->m_name); 10969c9e68d9Seric (void) close(mpvect[0]); 10979c9e68d9Seric (void) close(mpvect[1]); 10989c9e68d9Seric if (clever) 10999c9e68d9Seric { 11009c9e68d9Seric (void) close(rpvect[0]); 11019c9e68d9Seric (void) close(rpvect[1]); 11029c9e68d9Seric } 11039c9e68d9Seric if (tTd(11, 1)) 11049c9e68d9Seric printf("openmailer: NULL\n"); 11059c9e68d9Seric rcode = EX_OSERR; 11069c9e68d9Seric goto give_up; 11079c9e68d9Seric } 11089c9e68d9Seric else if (pid == 0) 11099c9e68d9Seric { 11109c9e68d9Seric int i; 11119c9e68d9Seric int saveerrno; 11129c9e68d9Seric char **ep; 11139c9e68d9Seric char *env[MAXUSERENVIRON]; 11149c9e68d9Seric extern char **environ; 11159c9e68d9Seric extern int DtableSize; 11169c9e68d9Seric 11179c9e68d9Seric /* child -- set up input & exec mailer */ 11182b9178d3Seric (void) setsignal(SIGINT, SIG_IGN); 11192b9178d3Seric (void) setsignal(SIGHUP, SIG_IGN); 11202b9178d3Seric (void) setsignal(SIGTERM, SIG_DFL); 11219c9e68d9Seric 11229c9e68d9Seric /* close any other cached connections */ 11239c9e68d9Seric mci_flush(FALSE, mci); 11249c9e68d9Seric 112544f2317fSeric /* reset user and group */ 112644f2317fSeric if (!bitnset(M_RESTR, m->m_flags)) 112744f2317fSeric { 112844f2317fSeric if (ctladdr == NULL || ctladdr->q_uid == 0) 112944f2317fSeric { 113044f2317fSeric (void) initgroups(DefUser, DefGid); 113144f2317fSeric (void) setuid(DefUid); 113244f2317fSeric } 113344f2317fSeric else 113444f2317fSeric { 113544f2317fSeric (void) initgroups(ctladdr->q_ruser? 113644f2317fSeric ctladdr->q_ruser: ctladdr->q_user, 113744f2317fSeric ctladdr->q_gid); 113844f2317fSeric (void) setuid(ctladdr->q_uid); 113944f2317fSeric } 114044f2317fSeric } 114144f2317fSeric 114244f2317fSeric if (tTd(11, 2)) 114344f2317fSeric printf("openmailer: running as r/euid=%d/%d\n", 114444f2317fSeric getuid(), geteuid()); 114544f2317fSeric 1146b986f6aaSeric /* move into some "safe" directory */ 1147b986f6aaSeric if (m->m_execdir != NULL) 1148b986f6aaSeric { 1149b986f6aaSeric char *p, *q; 1150b986f6aaSeric char buf[MAXLINE]; 1151b986f6aaSeric 1152b986f6aaSeric for (p = m->m_execdir; p != NULL; p = q) 1153b986f6aaSeric { 1154b986f6aaSeric q = strchr(p, ':'); 1155b986f6aaSeric if (q != NULL) 1156b986f6aaSeric *q = '\0'; 1157b986f6aaSeric expand(p, buf, &buf[sizeof buf] - 1, e); 1158b986f6aaSeric if (q != NULL) 1159b986f6aaSeric *q++ = ':'; 1160b986f6aaSeric if (tTd(11, 20)) 1161b986f6aaSeric printf("openmailer: trydir %s\n", 1162b986f6aaSeric buf); 1163b986f6aaSeric if (buf[0] != '\0' && chdir(buf) >= 0) 1164b986f6aaSeric break; 1165b986f6aaSeric } 1166b986f6aaSeric } 1167b986f6aaSeric 11689c9e68d9Seric /* arrange to filter std & diag output of command */ 11699c9e68d9Seric if (clever) 11709c9e68d9Seric { 11719c9e68d9Seric (void) close(rpvect[0]); 11726fe8c3bcSeric if (dup2(rpvect[1], STDOUT_FILENO) < 0) 11736fe8c3bcSeric { 11740e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdout", 11750e3bfef5Seric e->e_to, m->m_name, rpvect[1]); 11766fe8c3bcSeric _exit(EX_OSERR); 11776fe8c3bcSeric } 11789c9e68d9Seric (void) close(rpvect[1]); 11799c9e68d9Seric } 11809c9e68d9Seric else if (OpMode == MD_SMTP || HoldErrs) 11819c9e68d9Seric { 11829c9e68d9Seric /* put mailer output in transcript */ 11836fe8c3bcSeric if (dup2(fileno(e->e_xfp), STDOUT_FILENO) < 0) 11846fe8c3bcSeric { 11850e3bfef5Seric syserr("%s... openmailer(%s): cannot dup xscript %d for stdout", 11860e3bfef5Seric e->e_to, m->m_name, 11876fe8c3bcSeric fileno(e->e_xfp)); 11886fe8c3bcSeric _exit(EX_OSERR); 11899c9e68d9Seric } 11906fe8c3bcSeric } 11916fe8c3bcSeric if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0) 11926fe8c3bcSeric { 11930e3bfef5Seric syserr("%s... openmailer(%s): cannot dup stdout for stderr", 11940e3bfef5Seric e->e_to, m->m_name); 11956fe8c3bcSeric _exit(EX_OSERR); 11966fe8c3bcSeric } 11979c9e68d9Seric 11989c9e68d9Seric /* arrange to get standard input */ 11999c9e68d9Seric (void) close(mpvect[1]); 12009c9e68d9Seric if (dup2(mpvect[0], STDIN_FILENO) < 0) 12019c9e68d9Seric { 12020e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdin", 12030e3bfef5Seric e->e_to, m->m_name, mpvect[0]); 12049c9e68d9Seric _exit(EX_OSERR); 12059c9e68d9Seric } 12069c9e68d9Seric (void) close(mpvect[0]); 12079c9e68d9Seric 12089c9e68d9Seric /* arrange for all the files to be closed */ 12099c9e68d9Seric for (i = 3; i < DtableSize; i++) 12109c9e68d9Seric { 12119c9e68d9Seric register int j; 121244f2317fSeric 12139c9e68d9Seric if ((j = fcntl(i, F_GETFD, 0)) != -1) 12149c9e68d9Seric (void) fcntl(i, F_SETFD, j | 1); 12159c9e68d9Seric } 12169c9e68d9Seric 12179c9e68d9Seric /* set up the mailer environment */ 12189c9e68d9Seric i = 0; 12199c9e68d9Seric env[i++] = "AGENT=sendmail"; 12209c9e68d9Seric for (ep = environ; *ep != NULL; ep++) 12219c9e68d9Seric { 12229c9e68d9Seric if (strncmp(*ep, "TZ=", 3) == 0) 12239c9e68d9Seric env[i++] = *ep; 12249c9e68d9Seric } 12259c9e68d9Seric env[i++] = NULL; 12269c9e68d9Seric 12279c9e68d9Seric /* try to execute the mailer */ 12289c9e68d9Seric execve(m->m_mailer, pv, env); 12299c9e68d9Seric saveerrno = errno; 12309c9e68d9Seric syserr("Cannot exec %s", m->m_mailer); 12317c941fd2Seric if (m == LocalMailer || transienterror(saveerrno)) 12327c941fd2Seric _exit(EX_OSERR); 12339c9e68d9Seric _exit(EX_UNAVAILABLE); 12349c9e68d9Seric } 12359c9e68d9Seric 12369c9e68d9Seric /* 12379c9e68d9Seric ** Set up return value. 12389c9e68d9Seric */ 12399c9e68d9Seric 12409c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 12419c9e68d9Seric bzero((char *) mci, sizeof *mci); 12429c9e68d9Seric mci->mci_mailer = m; 12439c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 12449c9e68d9Seric mci->mci_pid = pid; 12459c9e68d9Seric (void) close(mpvect[0]); 12469c9e68d9Seric mci->mci_out = fdopen(mpvect[1], "w"); 12479c9e68d9Seric if (clever) 12489c9e68d9Seric { 12499c9e68d9Seric (void) close(rpvect[1]); 12509c9e68d9Seric mci->mci_in = fdopen(rpvect[0], "r"); 12519c9e68d9Seric } 12529c9e68d9Seric else 12539c9e68d9Seric { 12549c9e68d9Seric mci->mci_flags |= MCIF_TEMP; 12559c9e68d9Seric mci->mci_in = NULL; 12569c9e68d9Seric } 12579c9e68d9Seric } 12589c9e68d9Seric 12599c9e68d9Seric /* 12609c9e68d9Seric ** If we are in SMTP opening state, send initial protocol. 12619c9e68d9Seric */ 12629c9e68d9Seric 12639c9e68d9Seric if (clever && mci->mci_state != MCIS_CLOSED) 12649c9e68d9Seric { 12659c9e68d9Seric smtpinit(m, mci, e); 12669c9e68d9Seric } 12679c9e68d9Seric if (tTd(11, 1)) 12689c9e68d9Seric { 12699c9e68d9Seric printf("openmailer: "); 12709c9e68d9Seric mci_dump(mci); 12719c9e68d9Seric } 12729c9e68d9Seric 12739c9e68d9Seric if (mci->mci_state != MCIS_OPEN) 1274b31e7f2bSeric { 1275b31e7f2bSeric /* couldn't open the mailer */ 1276b31e7f2bSeric rcode = mci->mci_exitstat; 12772a6bc25bSeric errno = mci->mci_errno; 1278f170942cSeric #ifdef NAMED_BIND 1279f170942cSeric h_errno = mci->mci_herrno; 1280f170942cSeric #endif 1281b31e7f2bSeric if (rcode == EX_OK) 1282b31e7f2bSeric { 1283b31e7f2bSeric /* shouldn't happen */ 128408b25121Seric syserr("554 deliver: rcode=%d, mci_state=%d, sig=%s", 12856b0f339dSeric rcode, mci->mci_state, firstsig); 1286b31e7f2bSeric rcode = EX_SOFTWARE; 1287b31e7f2bSeric } 1288e9277e33Seric else if (rcode == EX_TEMPFAIL && *curhost != '\0') 128990891494Seric { 129090891494Seric /* try next MX site */ 129190891494Seric goto tryhost; 129290891494Seric } 1293b31e7f2bSeric } 1294b31e7f2bSeric else if (!clever) 1295b31e7f2bSeric { 1296b31e7f2bSeric /* 1297b31e7f2bSeric ** Format and send message. 1298b31e7f2bSeric */ 129915d084d5Seric 1300b31e7f2bSeric putfromline(mci->mci_out, m, e); 1301b31e7f2bSeric (*e->e_puthdr)(mci->mci_out, m, e); 1302b31e7f2bSeric putline("\n", mci->mci_out, m); 130303c02fdeSeric (*e->e_putbody)(mci->mci_out, m, e, NULL); 1304b31e7f2bSeric 1305b31e7f2bSeric /* get the exit status */ 1306c9be6216Seric rcode = endmailer(mci, e, pv); 1307134746fbSeric } 1308134746fbSeric else 1309b31e7f2bSeric #ifdef SMTP 1310134746fbSeric { 1311b31e7f2bSeric /* 1312b31e7f2bSeric ** Send the MAIL FROM: protocol 1313b31e7f2bSeric */ 131415d084d5Seric 1315b31e7f2bSeric rcode = smtpmailfrom(m, mci, e); 1316b31e7f2bSeric if (rcode == EX_OK) 131775889e88Seric { 1318ded0d3daSkarels register char *t = tobuf; 1319ded0d3daSkarels register int i; 1320ded0d3daSkarels 1321588cad61Seric /* send the recipient list */ 132263780dbdSeric tobuf[0] = '\0'; 132375889e88Seric for (to = tochain; to != NULL; to = to->q_tchain) 132475889e88Seric { 132563780dbdSeric e->e_to = to->q_paddr; 132615d084d5Seric if ((i = smtprcpt(to, m, mci, e)) != EX_OK) 132775889e88Seric { 132883b7ddc9Seric markfailure(e, to, i); 132981161401Seric giveresponse(i, m, mci, e); 133063780dbdSeric } 133175889e88Seric else 133275889e88Seric { 1333911693bfSbostic *t++ = ','; 1334b31e7f2bSeric for (p = to->q_paddr; *p; *t++ = *p++) 1335b31e7f2bSeric continue; 1336ee39df61Seric *t = '\0'; 1337588cad61Seric } 1338588cad61Seric } 1339588cad61Seric 134063780dbdSeric /* now send the data */ 134163780dbdSeric if (tobuf[0] == '\0') 1342b31e7f2bSeric { 13439c9e68d9Seric rcode = EX_OK; 134463780dbdSeric e->e_to = NULL; 1345b31e7f2bSeric if (bitset(MCIF_CACHED, mci->mci_flags)) 1346b31e7f2bSeric smtprset(m, mci, e); 1347b31e7f2bSeric } 134875889e88Seric else 134975889e88Seric { 135063780dbdSeric e->e_to = tobuf + 1; 135175889e88Seric rcode = smtpdata(m, mci, e); 135263780dbdSeric } 135363780dbdSeric 135463780dbdSeric /* now close the connection */ 1355b31e7f2bSeric if (!bitset(MCIF_CACHED, mci->mci_flags)) 135615d084d5Seric smtpquit(m, mci, e); 135763780dbdSeric } 13589c9e68d9Seric if (rcode != EX_OK && *curhost != '\0') 13599c9e68d9Seric { 13609c9e68d9Seric /* try next MX site */ 13619c9e68d9Seric goto tryhost; 13629c9e68d9Seric } 1363c579ef51Seric } 1364b31e7f2bSeric #else /* not SMTP */ 1365a05b3449Sbostic { 136608b25121Seric syserr("554 deliver: need SMTP compiled to use clever mailer"); 1367845e533cSeric rcode = EX_CONFIG; 1368b31e7f2bSeric goto give_up; 1369a05b3449Sbostic } 1370b31e7f2bSeric #endif /* SMTP */ 1371134746fbSeric #ifdef NAMED_BIND 13722bcc6d2dSeric if (ConfigLevel < 2) 1373912a731aSbostic _res.options |= RES_DEFNAMES | RES_DNSRCH; /* XXX */ 1374134746fbSeric #endif 13755dfc646bSeric 1376b31e7f2bSeric /* arrange a return receipt if requested */ 1377*df106f0bSeric if (rcode == EX_OK && e->e_receiptto != NULL && 1378*df106f0bSeric bitnset(M_LOCALMAILER, m->m_flags)) 1379b31e7f2bSeric { 1380b31e7f2bSeric e->e_flags |= EF_SENDRECEIPT; 1381b31e7f2bSeric /* do we want to send back more info? */ 1382b31e7f2bSeric } 1383b31e7f2bSeric 1384c77d1c25Seric /* 138563780dbdSeric ** Do final status disposal. 138663780dbdSeric ** We check for something in tobuf for the SMTP case. 1387c77d1c25Seric ** If we got a temporary failure, arrange to queue the 1388c77d1c25Seric ** addressees. 1389c77d1c25Seric */ 1390c77d1c25Seric 1391b31e7f2bSeric give_up: 139263780dbdSeric if (tobuf[0] != '\0') 139381161401Seric giveresponse(rcode, m, mci, e); 1394772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 1395b31e7f2bSeric { 1396dde5acadSeric if (rcode != EX_OK) 139783b7ddc9Seric markfailure(e, to, rcode); 1398dde5acadSeric else 1399655518ecSeric { 1400dde5acadSeric to->q_flags |= QSENT; 1401655518ecSeric e->e_nsent++; 1402*df106f0bSeric if (e->e_receiptto != NULL && 1403*df106f0bSeric bitnset(M_LOCALMAILER, m->m_flags)) 1404*df106f0bSeric { 1405*df106f0bSeric fprintf(e->e_xfp, "%s... Successfully delivered\n", 1406*df106f0bSeric to->q_paddr); 1407*df106f0bSeric } 1408655518ecSeric } 1409b31e7f2bSeric } 1410b31e7f2bSeric 1411b31e7f2bSeric /* 1412b31e7f2bSeric ** Restore state and return. 1413b31e7f2bSeric */ 1414c77d1c25Seric 14157febfd66Seric #ifdef XDEBUG 14167febfd66Seric { 14177febfd66Seric char wbuf[MAXLINE]; 14187febfd66Seric 14197febfd66Seric /* make absolutely certain 0, 1, and 2 are in use */ 142044622ea3Seric sprintf(wbuf, "%s... end of deliver(%s)", 142144622ea3Seric e->e_to == NULL ? "NO-TO-LIST" : e->e_to, 142244622ea3Seric m->m_name); 14237febfd66Seric checkfd012(wbuf); 14247febfd66Seric } 14257febfd66Seric #endif 14267febfd66Seric 142735490626Seric errno = 0; 1428588cad61Seric define('g', (char *) NULL, e); 14295826d9d3Seric return (rcode); 143025a99e2eSeric } 14315dfc646bSeric /* 143283b7ddc9Seric ** MARKFAILURE -- mark a failure on a specific address. 143383b7ddc9Seric ** 143483b7ddc9Seric ** Parameters: 143583b7ddc9Seric ** e -- the envelope we are sending. 143683b7ddc9Seric ** q -- the address to mark. 143783b7ddc9Seric ** rcode -- the code signifying the particular failure. 143883b7ddc9Seric ** 143983b7ddc9Seric ** Returns: 144083b7ddc9Seric ** none. 144183b7ddc9Seric ** 144283b7ddc9Seric ** Side Effects: 144383b7ddc9Seric ** marks the address (and possibly the envelope) with the 144483b7ddc9Seric ** failure so that an error will be returned or 144583b7ddc9Seric ** the message will be queued, as appropriate. 144683b7ddc9Seric */ 144783b7ddc9Seric 144883b7ddc9Seric markfailure(e, q, rcode) 144983b7ddc9Seric register ENVELOPE *e; 145083b7ddc9Seric register ADDRESS *q; 145183b7ddc9Seric int rcode; 145283b7ddc9Seric { 145319c47125Seric char buf[MAXLINE]; 145419c47125Seric 145583b7ddc9Seric if (rcode == EX_OK) 145683b7ddc9Seric return; 1457f170942cSeric else if (rcode == EX_TEMPFAIL) 145883b7ddc9Seric q->q_flags |= QQUEUEUP; 1459f170942cSeric else if (rcode != EX_IOERR && rcode != EX_OSERR) 1460f170942cSeric q->q_flags |= QBADADDR; 146183b7ddc9Seric } 146283b7ddc9Seric /* 1463c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 1464c579ef51Seric ** 1465c579ef51Seric ** We should never get fatal errors (e.g., segmentation 1466c579ef51Seric ** violation), so we report those specially. For other 1467c579ef51Seric ** errors, we choose a status message (into statmsg), 1468c579ef51Seric ** and if it represents an error, we print it. 1469c579ef51Seric ** 1470c579ef51Seric ** Parameters: 1471c579ef51Seric ** pid -- pid of mailer. 1472c9be6216Seric ** e -- the current envelope. 1473c9be6216Seric ** pv -- the parameter vector that invoked the mailer 1474c9be6216Seric ** (for error messages). 1475c579ef51Seric ** 1476c579ef51Seric ** Returns: 1477c579ef51Seric ** exit code of mailer. 1478c579ef51Seric ** 1479c579ef51Seric ** Side Effects: 1480c579ef51Seric ** none. 1481c579ef51Seric */ 1482c579ef51Seric 1483c9be6216Seric endmailer(mci, e, pv) 1484b31e7f2bSeric register MCI *mci; 1485c9be6216Seric register ENVELOPE *e; 1486c9be6216Seric char **pv; 1487c579ef51Seric { 1488588cad61Seric int st; 1489c579ef51Seric 149075889e88Seric /* close any connections */ 149175889e88Seric if (mci->mci_in != NULL) 1492c9be6216Seric (void) xfclose(mci->mci_in, pv[0], "mci_in"); 149375889e88Seric if (mci->mci_out != NULL) 1494c9be6216Seric (void) xfclose(mci->mci_out, pv[0], "mci_out"); 149575889e88Seric mci->mci_in = mci->mci_out = NULL; 149675889e88Seric mci->mci_state = MCIS_CLOSED; 149775889e88Seric 149833db8731Seric /* in the IPC case there is nothing to wait for */ 149975889e88Seric if (mci->mci_pid == 0) 150033db8731Seric return (EX_OK); 150133db8731Seric 150233db8731Seric /* wait for the mailer process to die and collect status */ 150375889e88Seric st = waitfor(mci->mci_pid); 1504588cad61Seric if (st == -1) 150578de67c1Seric { 1506c9be6216Seric syserr("endmailer %s: wait", pv[0]); 1507588cad61Seric return (EX_SOFTWARE); 1508c579ef51Seric } 150933db8731Seric 1510bf9bc890Seric if (WIFEXITED(st)) 1511c579ef51Seric { 1512bf9bc890Seric /* normal death -- return status */ 1513bf9bc890Seric return (WEXITSTATUS(st)); 1514bf9bc890Seric } 1515bf9bc890Seric 1516bf9bc890Seric /* it died a horrid death */ 1517c9be6216Seric syserr("mailer %s died with signal %o", pv[0], st); 1518c9be6216Seric 1519c9be6216Seric /* log the arguments */ 1520c9be6216Seric if (e->e_xfp != NULL) 1521c9be6216Seric { 1522c9be6216Seric register char **av; 1523c9be6216Seric 1524c9be6216Seric fprintf(e->e_xfp, "Arguments:"); 1525c9be6216Seric for (av = pv; *av != NULL; av++) 1526c9be6216Seric fprintf(e->e_xfp, " %s", *av); 1527c9be6216Seric fprintf(e->e_xfp, "\n"); 1528c9be6216Seric } 1529c9be6216Seric 15305f73204aSeric ExitStat = EX_TEMPFAIL; 15315f73204aSeric return (EX_TEMPFAIL); 1532c579ef51Seric } 1533c579ef51Seric /* 153425a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 153525a99e2eSeric ** 153625a99e2eSeric ** Parameters: 153725a99e2eSeric ** stat -- the status code from the mailer (high byte 153825a99e2eSeric ** only; core dumps must have been taken care of 153925a99e2eSeric ** already). 154081161401Seric ** m -- the mailer info for this mailer. 154181161401Seric ** mci -- the mailer connection info -- can be NULL if the 154281161401Seric ** response is given before the connection is made. 154381161401Seric ** e -- the current envelope. 154425a99e2eSeric ** 154525a99e2eSeric ** Returns: 1546db8841e9Seric ** none. 154725a99e2eSeric ** 154825a99e2eSeric ** Side Effects: 1549c1f9df2cSeric ** Errors may be incremented. 155025a99e2eSeric ** ExitStat may be set. 155125a99e2eSeric */ 155225a99e2eSeric 155381161401Seric giveresponse(stat, m, mci, e) 155425a99e2eSeric int stat; 1555588cad61Seric register MAILER *m; 155681161401Seric register MCI *mci; 1557198d9be0Seric ENVELOPE *e; 155825a99e2eSeric { 15599c16475dSeric register const char *statmsg; 156025a99e2eSeric extern char *SysExMsg[]; 156125a99e2eSeric register int i; 1562d4bd8f0eSbostic extern int N_SysEx; 1563198d9be0Seric char buf[MAXLINE]; 156425a99e2eSeric 156513bbc08cSeric /* 156613bbc08cSeric ** Compute status message from code. 156713bbc08cSeric */ 156813bbc08cSeric 156925a99e2eSeric i = stat - EX__BASE; 1570588cad61Seric if (stat == 0) 15716fe8c3bcSeric { 1572588cad61Seric statmsg = "250 Sent"; 1573ce5531bdSeric if (e->e_statmsg != NULL) 15746fe8c3bcSeric { 1575ce5531bdSeric (void) sprintf(buf, "%s (%s)", statmsg, e->e_statmsg); 15766fe8c3bcSeric statmsg = buf; 15776fe8c3bcSeric } 15786fe8c3bcSeric } 1579588cad61Seric else if (i < 0 || i > N_SysEx) 1580588cad61Seric { 1581588cad61Seric (void) sprintf(buf, "554 unknown mailer error %d", stat); 1582588cad61Seric stat = EX_UNAVAILABLE; 1583588cad61Seric statmsg = buf; 1584588cad61Seric } 1585198d9be0Seric else if (stat == EX_TEMPFAIL) 1586198d9be0Seric { 15877d55540cSeric (void) strcpy(buf, SysExMsg[i] + 1); 1588d4bd8f0eSbostic #ifdef NAMED_BIND 1589f28da541Smiriam if (h_errno == TRY_AGAIN) 15904d50702aSeric statmsg = errstring(h_errno+E_DNSBASE); 1591f28da541Smiriam else 1592d4bd8f0eSbostic #endif 1593f28da541Smiriam { 15948557d168Seric if (errno != 0) 1595d87e85f3Seric statmsg = errstring(errno); 1596d87e85f3Seric else 1597d87e85f3Seric { 1598d87e85f3Seric #ifdef SMTP 1599d87e85f3Seric extern char SmtpError[]; 1600d87e85f3Seric 1601d87e85f3Seric statmsg = SmtpError; 16026c2c3107Seric #else /* SMTP */ 1603d87e85f3Seric statmsg = NULL; 16046c2c3107Seric #endif /* SMTP */ 1605d87e85f3Seric } 1606f28da541Smiriam } 1607d87e85f3Seric if (statmsg != NULL && statmsg[0] != '\0') 1608d87e85f3Seric { 160987c9b3e7Seric (void) strcat(buf, ": "); 1610d87e85f3Seric (void) strcat(buf, statmsg); 16118557d168Seric } 1612198d9be0Seric statmsg = buf; 1613198d9be0Seric } 1614f170942cSeric #ifdef NAMED_BIND 1615f170942cSeric else if (stat == EX_NOHOST && h_errno != 0) 1616f170942cSeric { 16174d50702aSeric statmsg = errstring(h_errno + E_DNSBASE); 1618f170942cSeric (void) sprintf(buf, "%s (%s)", SysExMsg[i], statmsg); 1619f170942cSeric statmsg = buf; 1620f170942cSeric } 1621f170942cSeric #endif 162225a99e2eSeric else 1623d87e85f3Seric { 162425a99e2eSeric statmsg = SysExMsg[i]; 16257d55540cSeric if (*statmsg++ == ':') 16267d55540cSeric { 16277d55540cSeric (void) sprintf(buf, "%s: %s", statmsg, errstring(errno)); 16287d55540cSeric statmsg = buf; 16297d55540cSeric } 1630d87e85f3Seric } 1631588cad61Seric 1632588cad61Seric /* 1633588cad61Seric ** Print the message as appropriate 1634588cad61Seric */ 1635588cad61Seric 1636198d9be0Seric if (stat == EX_OK || stat == EX_TEMPFAIL) 1637*df106f0bSeric { 1638*df106f0bSeric extern char MsgBuf[]; 1639*df106f0bSeric 1640e12d03eeSeric message(&statmsg[4], errstring(errno)); 1641*df106f0bSeric if (stat == EX_TEMPFAIL && e->e_xfp != NULL) 1642*df106f0bSeric fprintf(e->e_xfp, "%s\n", &MsgBuf[4]); 1643*df106f0bSeric } 164425a99e2eSeric else 164525a99e2eSeric { 1646c1f9df2cSeric Errors++; 1647e12d03eeSeric usrerr(statmsg, errstring(errno)); 164825a99e2eSeric } 164925a99e2eSeric 165025a99e2eSeric /* 165125a99e2eSeric ** Final cleanup. 165225a99e2eSeric ** Log a record of the transaction. Compute the new 165325a99e2eSeric ** ExitStat -- if we already had an error, stick with 165425a99e2eSeric ** that. 165525a99e2eSeric */ 165625a99e2eSeric 16572f624c86Seric if (LogLevel > ((stat == EX_TEMPFAIL) ? 8 : (stat == EX_OK) ? 7 : 6)) 165881161401Seric logdelivery(m, mci, &statmsg[4], e); 1659eb238f8cSeric 1660eb238f8cSeric if (stat != EX_TEMPFAIL) 1661eb238f8cSeric setstat(stat); 1662198d9be0Seric if (stat != EX_OK) 1663198d9be0Seric { 1664198d9be0Seric if (e->e_message != NULL) 1665198d9be0Seric free(e->e_message); 1666198d9be0Seric e->e_message = newstr(&statmsg[4]); 1667198d9be0Seric } 16688557d168Seric errno = 0; 1669d4bd8f0eSbostic #ifdef NAMED_BIND 1670f28da541Smiriam h_errno = 0; 1671d4bd8f0eSbostic #endif 1672eb238f8cSeric } 1673eb238f8cSeric /* 1674eb238f8cSeric ** LOGDELIVERY -- log the delivery in the system log 1675eb238f8cSeric ** 1676eb238f8cSeric ** Parameters: 167781161401Seric ** m -- the mailer info. Can be NULL for initial queue. 167881161401Seric ** mci -- the mailer connection info -- can be NULL if the 167981161401Seric ** log is occuring when no connection is active. 168081161401Seric ** stat -- the message to print for the status. 168181161401Seric ** e -- the current envelope. 1682eb238f8cSeric ** 1683eb238f8cSeric ** Returns: 1684eb238f8cSeric ** none 1685eb238f8cSeric ** 1686eb238f8cSeric ** Side Effects: 1687eb238f8cSeric ** none 1688eb238f8cSeric */ 1689eb238f8cSeric 169081161401Seric logdelivery(m, mci, stat, e) 169181161401Seric MAILER *m; 169281161401Seric register MCI *mci; 1693eb238f8cSeric char *stat; 1694b31e7f2bSeric register ENVELOPE *e; 16955cf56be3Seric { 1696eb238f8cSeric # ifdef LOG 1697d6acf3eeSeric char buf[512]; 16989507d1f9Seric 169948ed5d33Seric (void) sprintf(buf, "delay=%s", pintvl(curtime() - e->e_ctime, TRUE)); 170081161401Seric 170148ed5d33Seric if (m != NULL) 170271ff6caaSeric { 170348ed5d33Seric (void) strcat(buf, ", mailer="); 170448ed5d33Seric (void) strcat(buf, m->m_name); 170571ff6caaSeric } 170648ed5d33Seric 170748ed5d33Seric if (mci != NULL && mci->mci_host != NULL) 170871ff6caaSeric { 170971ff6caaSeric # ifdef DAEMON 1710e2f2f828Seric extern SOCKADDR CurHostAddr; 171148ed5d33Seric # endif 171271ff6caaSeric 171348ed5d33Seric (void) strcat(buf, ", relay="); 171448ed5d33Seric (void) strcat(buf, mci->mci_host); 171548ed5d33Seric 171648ed5d33Seric # ifdef DAEMON 171748ed5d33Seric (void) strcat(buf, " ("); 1718e2f2f828Seric (void) strcat(buf, anynet_ntoa(&CurHostAddr)); 171948ed5d33Seric (void) strcat(buf, ")"); 172071ff6caaSeric # endif 172171ff6caaSeric } 17229507d1f9Seric else 172348ed5d33Seric { 172448ed5d33Seric char *p = macvalue('h', e); 17259507d1f9Seric 172648ed5d33Seric if (p != NULL && p[0] != '\0') 172748ed5d33Seric { 172848ed5d33Seric (void) strcat(buf, ", relay="); 172948ed5d33Seric (void) strcat(buf, p); 173048ed5d33Seric } 173148ed5d33Seric } 1732d6acf3eeSeric 1733d6acf3eeSeric syslog(LOG_INFO, "%s: to=%s, %s, stat=%s", 1734d6acf3eeSeric e->e_id, e->e_to, buf, stat); 17356c2c3107Seric # endif /* LOG */ 173625a99e2eSeric } 173725a99e2eSeric /* 173851552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 173925a99e2eSeric ** 174051552439Seric ** This can be made an arbitrary message separator by changing $l 174151552439Seric ** 17429b6c17a6Seric ** One of the ugliest hacks seen by human eyes is contained herein: 17439b6c17a6Seric ** UUCP wants those stupid "remote from <host>" lines. Why oh why 17449b6c17a6Seric ** does a well-meaning programmer such as myself have to deal with 17459b6c17a6Seric ** this kind of antique garbage???? 174625a99e2eSeric ** 174725a99e2eSeric ** Parameters: 174851552439Seric ** fp -- the file to output to. 174951552439Seric ** m -- the mailer describing this entry. 175025a99e2eSeric ** 175125a99e2eSeric ** Returns: 175251552439Seric ** none 175325a99e2eSeric ** 175425a99e2eSeric ** Side Effects: 175551552439Seric ** outputs some text to fp. 175625a99e2eSeric */ 175725a99e2eSeric 1758b31e7f2bSeric putfromline(fp, m, e) 175951552439Seric register FILE *fp; 176051552439Seric register MAILER *m; 1761b31e7f2bSeric ENVELOPE *e; 176225a99e2eSeric { 17632bc47524Seric char *template = "\201l\n"; 176451552439Seric char buf[MAXLINE]; 176525a99e2eSeric 176657fc6f17Seric if (bitnset(M_NHDR, m->m_flags)) 176751552439Seric return; 176813bbc08cSeric 17692c7e1b8dSeric # ifdef UGLYUUCP 177057fc6f17Seric if (bitnset(M_UGLYUUCP, m->m_flags)) 177174b6e67bSeric { 1772ea09d6edSeric char *bang; 1773ea09d6edSeric char xbuf[MAXLINE]; 177474b6e67bSeric 1775ee4b0922Seric expand("\201g", buf, &buf[sizeof buf - 1], e); 17766c2c3107Seric bang = strchr(buf, '!'); 177774b6e67bSeric if (bang == NULL) 177834fcca25Seric { 177934fcca25Seric errno = 0; 178034fcca25Seric syserr("554 No ! in UUCP From address! (%s given)", buf); 178134fcca25Seric } 178274b6e67bSeric else 1783588cad61Seric { 1784ea09d6edSeric *bang++ = '\0'; 17852bc47524Seric (void) sprintf(xbuf, "From %s \201d remote from %s\n", bang, buf); 1786ea09d6edSeric template = xbuf; 178774b6e67bSeric } 1788588cad61Seric } 17896c2c3107Seric # endif /* UGLYUUCP */ 1790b31e7f2bSeric expand(template, buf, &buf[sizeof buf - 1], e); 179177b52738Seric putline(buf, fp, m); 1792bc6e2962Seric } 1793bc6e2962Seric /* 179451552439Seric ** PUTBODY -- put the body of a message. 179551552439Seric ** 179651552439Seric ** Parameters: 179751552439Seric ** fp -- file to output onto. 179877b52738Seric ** m -- a mailer descriptor to control output format. 17999a6a5f55Seric ** e -- the envelope to put out. 180003c02fdeSeric ** separator -- if non-NULL, a message separator that must 180103c02fdeSeric ** not be permitted in the resulting message. 180251552439Seric ** 180351552439Seric ** Returns: 180451552439Seric ** none. 180551552439Seric ** 180651552439Seric ** Side Effects: 180751552439Seric ** The message is written onto fp. 180851552439Seric */ 180951552439Seric 181003c02fdeSeric putbody(fp, m, e, separator) 181151552439Seric FILE *fp; 1812588cad61Seric MAILER *m; 18139a6a5f55Seric register ENVELOPE *e; 181403c02fdeSeric char *separator; 181551552439Seric { 181677b52738Seric char buf[MAXLINE]; 181751552439Seric 181851552439Seric /* 181951552439Seric ** Output the body of the message 182051552439Seric */ 182151552439Seric 18229a6a5f55Seric if (e->e_dfp == NULL) 182351552439Seric { 18249a6a5f55Seric if (e->e_df != NULL) 18259a6a5f55Seric { 18269a6a5f55Seric e->e_dfp = fopen(e->e_df, "r"); 18279a6a5f55Seric if (e->e_dfp == NULL) 18288f9146b0Srick syserr("putbody: Cannot open %s for %s from %s", 1829e76a6a8fSeric e->e_df, e->e_to, e->e_from.q_paddr); 18309a6a5f55Seric } 18319a6a5f55Seric else 183277b52738Seric putline("<<< No Message Collected >>>", fp, m); 18339a6a5f55Seric } 18349a6a5f55Seric if (e->e_dfp != NULL) 18359a6a5f55Seric { 18369a6a5f55Seric rewind(e->e_dfp); 183777b52738Seric while (!ferror(fp) && fgets(buf, sizeof buf, e->e_dfp) != NULL) 183824fc8aeeSeric { 183924fc8aeeSeric if (buf[0] == 'F' && bitnset(M_ESCFROM, m->m_flags) && 1840d6fa2b58Sbostic strncmp(buf, "From ", 5) == 0) 18413462ad9eSeric (void) putc('>', fp); 184203c02fdeSeric if (buf[0] == '-' && buf[1] == '-' && separator != NULL) 184303c02fdeSeric { 184403c02fdeSeric /* possible separator */ 184503c02fdeSeric int sl = strlen(separator); 184603c02fdeSeric 184703c02fdeSeric if (strncmp(&buf[2], separator, sl) == 0) 184803c02fdeSeric (void) putc(' ', fp); 184903c02fdeSeric } 185077b52738Seric putline(buf, fp, m); 185124fc8aeeSeric } 185251552439Seric 18539a6a5f55Seric if (ferror(e->e_dfp)) 185451552439Seric { 1855*df106f0bSeric syserr("putbody: %s: read error", e->e_df); 185651552439Seric ExitStat = EX_IOERR; 185751552439Seric } 185851552439Seric } 185951552439Seric 18600890ba1fSeric /* some mailers want extra blank line at end of message */ 18610890ba1fSeric if (bitnset(M_BLANKEND, m->m_flags) && buf[0] != '\0' && buf[0] != '\n') 18620890ba1fSeric putline("", fp, m); 18630890ba1fSeric 186451552439Seric (void) fflush(fp); 186551552439Seric if (ferror(fp) && errno != EPIPE) 186651552439Seric { 186751552439Seric syserr("putbody: write error"); 186851552439Seric ExitStat = EX_IOERR; 186951552439Seric } 187051552439Seric errno = 0; 187125a99e2eSeric } 187225a99e2eSeric /* 187325a99e2eSeric ** MAILFILE -- Send a message to a file. 187425a99e2eSeric ** 1875f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1876f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1877f129ec7dSeric ** rather than the real user. Obviously, this only works if 1878f129ec7dSeric ** sendmail runs as root. 1879f129ec7dSeric ** 1880588cad61Seric ** This could be done as a subordinate mailer, except that it 1881588cad61Seric ** is used implicitly to save messages in ~/dead.letter. We 1882588cad61Seric ** view this as being sufficiently important as to include it 1883588cad61Seric ** here. For example, if the system is dying, we shouldn't have 1884588cad61Seric ** to create another process plus some pipes to save the message. 1885588cad61Seric ** 188625a99e2eSeric ** Parameters: 188725a99e2eSeric ** filename -- the name of the file to send to. 18886259796dSeric ** ctladdr -- the controlling address header -- includes 18896259796dSeric ** the userid/groupid to be when sending. 189025a99e2eSeric ** 189125a99e2eSeric ** Returns: 189225a99e2eSeric ** The exit code associated with the operation. 189325a99e2eSeric ** 189425a99e2eSeric ** Side Effects: 189525a99e2eSeric ** none. 189625a99e2eSeric */ 189725a99e2eSeric 1898b31e7f2bSeric mailfile(filename, ctladdr, e) 189925a99e2eSeric char *filename; 19006259796dSeric ADDRESS *ctladdr; 1901b31e7f2bSeric register ENVELOPE *e; 190225a99e2eSeric { 190325a99e2eSeric register FILE *f; 190432d19d43Seric register int pid; 190515d084d5Seric int mode; 190625a99e2eSeric 1907671745f3Seric if (tTd(11, 1)) 1908671745f3Seric { 1909671745f3Seric printf("mailfile %s\n ctladdr=", filename); 1910671745f3Seric printaddr(ctladdr, FALSE); 1911671745f3Seric } 1912671745f3Seric 1913f170942cSeric if (e->e_xfp != NULL) 1914f170942cSeric fflush(e->e_xfp); 1915f170942cSeric 191632d19d43Seric /* 191732d19d43Seric ** Fork so we can change permissions here. 191832d19d43Seric ** Note that we MUST use fork, not vfork, because of 191932d19d43Seric ** the complications of calling subroutines, etc. 192032d19d43Seric */ 192132d19d43Seric 192232d19d43Seric DOFORK(fork); 192332d19d43Seric 192432d19d43Seric if (pid < 0) 192532d19d43Seric return (EX_OSERR); 192632d19d43Seric else if (pid == 0) 192732d19d43Seric { 192832d19d43Seric /* child -- actually write to file */ 1929f129ec7dSeric struct stat stb; 1930f129ec7dSeric 19312b9178d3Seric (void) setsignal(SIGINT, SIG_DFL); 19322b9178d3Seric (void) setsignal(SIGHUP, SIG_DFL); 19332b9178d3Seric (void) setsignal(SIGTERM, SIG_DFL); 19343462ad9eSeric (void) umask(OldUmask); 193595f16dc0Seric 1936f129ec7dSeric if (stat(filename, &stb) < 0) 19373a98e7eaSeric stb.st_mode = FileMode; 193815d084d5Seric mode = stb.st_mode; 193995f16dc0Seric 194095f16dc0Seric /* limit the errors to those actually caused in the child */ 194195f16dc0Seric errno = 0; 194295f16dc0Seric ExitStat = EX_OK; 194395f16dc0Seric 1944f129ec7dSeric if (bitset(0111, stb.st_mode)) 1945f129ec7dSeric exit(EX_CANTCREAT); 194603827b5fSeric if (ctladdr == NULL) 19478f9146b0Srick ctladdr = &e->e_from; 194815d084d5Seric else 194915d084d5Seric { 195015d084d5Seric /* ignore setuid and setgid bits */ 195115d084d5Seric mode &= ~(S_ISGID|S_ISUID); 195215d084d5Seric } 195315d084d5Seric 19548f9146b0Srick /* we have to open the dfile BEFORE setuid */ 19558f9146b0Srick if (e->e_dfp == NULL && e->e_df != NULL) 19568f9146b0Srick { 19578f9146b0Srick e->e_dfp = fopen(e->e_df, "r"); 195895f16dc0Seric if (e->e_dfp == NULL) 195995f16dc0Seric { 19608f9146b0Srick syserr("mailfile: Cannot open %s for %s from %s", 1961e76a6a8fSeric e->e_df, e->e_to, e->e_from.q_paddr); 19628f9146b0Srick } 19638f9146b0Srick } 19648f9146b0Srick 196515d084d5Seric if (!bitset(S_ISGID, mode) || setgid(stb.st_gid) < 0) 1966e36b99e2Seric { 196795f16dc0Seric if (ctladdr->q_uid == 0) 196895f16dc0Seric { 1969898a126bSbostic (void) initgroups(DefUser, DefGid); 197095f16dc0Seric } 197195f16dc0Seric else 197295f16dc0Seric { 1973898a126bSbostic (void) initgroups(ctladdr->q_ruser ? 1974898a126bSbostic ctladdr->q_ruser : ctladdr->q_user, 1975898a126bSbostic ctladdr->q_gid); 1976898a126bSbostic } 1977e36b99e2Seric } 197815d084d5Seric if (!bitset(S_ISUID, mode) || setuid(stb.st_uid) < 0) 1979e36b99e2Seric { 1980e36b99e2Seric if (ctladdr->q_uid == 0) 1981e36b99e2Seric (void) setuid(DefUid); 1982e36b99e2Seric else 19836259796dSeric (void) setuid(ctladdr->q_uid); 1984e36b99e2Seric } 198595f16dc0Seric FileName = filename; 198695f16dc0Seric LineNumber = 0; 19873a98e7eaSeric f = dfopen(filename, O_WRONLY|O_CREAT|O_APPEND, FileMode); 198825a99e2eSeric if (f == NULL) 198995f16dc0Seric { 1990b6a0de9dSeric message("554 cannot open: %s", errstring(errno)); 199132d19d43Seric exit(EX_CANTCREAT); 199295f16dc0Seric } 199325a99e2eSeric 19940331ce05Seric putfromline(f, FileMailer, e); 19950331ce05Seric (*e->e_puthdr)(f, FileMailer, e); 19960331ce05Seric putline("\n", f, FileMailer); 199703c02fdeSeric (*e->e_putbody)(f, FileMailer, e, NULL); 19980331ce05Seric putline("\n", f, FileMailer); 199995f16dc0Seric if (ferror(f)) 200095f16dc0Seric { 2001b6a0de9dSeric message("451 I/O error: %s", errstring(errno)); 200295f16dc0Seric setstat(EX_IOERR); 200395f16dc0Seric } 2004ee4b0922Seric (void) xfclose(f, "mailfile", filename); 200532d19d43Seric (void) fflush(stdout); 2006e36b99e2Seric 200727628d59Seric /* reset ISUID & ISGID bits for paranoid systems */ 2008c77d1c25Seric (void) chmod(filename, (int) stb.st_mode); 200995f16dc0Seric exit(ExitStat); 201013bbc08cSeric /*NOTREACHED*/ 201132d19d43Seric } 201232d19d43Seric else 201332d19d43Seric { 201432d19d43Seric /* parent -- wait for exit status */ 2015588cad61Seric int st; 201632d19d43Seric 2017588cad61Seric st = waitfor(pid); 2018bf9bc890Seric if (WIFEXITED(st)) 2019bf9bc890Seric return (WEXITSTATUS(st)); 2020588cad61Seric else 2021b6a0de9dSeric { 2022b6a0de9dSeric syserr("child died on signal %d", st); 2023bf9bc890Seric return (EX_UNAVAILABLE); 2024b6a0de9dSeric } 20258f9146b0Srick /*NOTREACHED*/ 202632d19d43Seric } 202725a99e2eSeric } 2028ea4dc939Seric /* 2029e103b48fSeric ** HOSTSIGNATURE -- return the "signature" for a host. 2030e103b48fSeric ** 2031e103b48fSeric ** The signature describes how we are going to send this -- it 2032e103b48fSeric ** can be just the hostname (for non-Internet hosts) or can be 2033e103b48fSeric ** an ordered list of MX hosts. 2034e103b48fSeric ** 2035e103b48fSeric ** Parameters: 2036e103b48fSeric ** m -- the mailer describing this host. 2037e103b48fSeric ** host -- the host name. 2038e103b48fSeric ** e -- the current envelope. 2039e103b48fSeric ** 2040e103b48fSeric ** Returns: 2041e103b48fSeric ** The signature for this host. 2042e103b48fSeric ** 2043e103b48fSeric ** Side Effects: 2044e103b48fSeric ** Can tweak the symbol table. 2045e103b48fSeric */ 2046e103b48fSeric 2047e103b48fSeric char * 2048e103b48fSeric hostsignature(m, host, e) 2049e103b48fSeric register MAILER *m; 2050e103b48fSeric char *host; 2051e103b48fSeric ENVELOPE *e; 2052e103b48fSeric { 2053e103b48fSeric register char *p; 2054e103b48fSeric register STAB *s; 2055e103b48fSeric int i; 2056e103b48fSeric int len; 2057e103b48fSeric #ifdef NAMED_BIND 2058e103b48fSeric int nmx; 2059e103b48fSeric auto int rcode; 2060bafdc4e5Seric char *hp; 2061bafdc4e5Seric char *endp; 2062516782b4Seric int oldoptions; 2063e103b48fSeric char *mxhosts[MAXMXHOSTS + 1]; 2064e103b48fSeric #endif 2065e103b48fSeric 2066e103b48fSeric /* 2067e103b48fSeric ** Check to see if this uses IPC -- if not, it can't have MX records. 2068e103b48fSeric */ 2069e103b48fSeric 2070e103b48fSeric p = m->m_mailer; 2071e103b48fSeric if (strcmp(p, "[IPC]") != 0 && strcmp(p, "[TCP]") != 0) 2072e103b48fSeric { 2073e103b48fSeric /* just an ordinary mailer */ 2074e103b48fSeric return host; 2075e103b48fSeric } 2076e103b48fSeric 2077e103b48fSeric /* 2078e103b48fSeric ** Look it up in the symbol table. 2079e103b48fSeric */ 2080e103b48fSeric 2081e103b48fSeric s = stab(host, ST_HOSTSIG, ST_ENTER); 2082e103b48fSeric if (s->s_hostsig != NULL) 2083e103b48fSeric return s->s_hostsig; 2084e103b48fSeric 2085e103b48fSeric /* 2086e103b48fSeric ** Not already there -- create a signature. 2087e103b48fSeric */ 2088e103b48fSeric 2089e103b48fSeric #ifdef NAMED_BIND 2090516782b4Seric if (ConfigLevel < 2) 2091516782b4Seric { 2092516782b4Seric oldoptions = _res.options; 2093516782b4Seric _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 2094516782b4Seric } 2095516782b4Seric 2096bafdc4e5Seric for (hp = host; hp != NULL; hp = endp) 2097bafdc4e5Seric { 2098bafdc4e5Seric endp = strchr(hp, ':'); 2099bafdc4e5Seric if (endp != NULL) 2100bafdc4e5Seric *endp = '\0'; 2101bafdc4e5Seric 21027bf809e6Seric nmx = getmxrr(hp, mxhosts, TRUE, &rcode); 21037d55540cSeric 2104e103b48fSeric if (nmx <= 0) 2105e103b48fSeric { 2106e103b48fSeric register MCI *mci; 2107e103b48fSeric extern int errno; 2108e103b48fSeric 2109e103b48fSeric /* update the connection info for this host */ 2110bafdc4e5Seric mci = mci_get(hp, m); 2111e103b48fSeric mci->mci_exitstat = rcode; 2112e103b48fSeric mci->mci_errno = errno; 2113f170942cSeric #ifdef NAMED_BIND 2114f170942cSeric mci->mci_herrno = h_errno; 2115f170942cSeric #endif 2116e103b48fSeric 2117e103b48fSeric /* and return the original host name as the signature */ 2118bafdc4e5Seric nmx = 1; 2119bafdc4e5Seric mxhosts[0] = hp; 2120e103b48fSeric } 2121e103b48fSeric 2122e103b48fSeric len = 0; 2123e103b48fSeric for (i = 0; i < nmx; i++) 2124e103b48fSeric { 2125e103b48fSeric len += strlen(mxhosts[i]) + 1; 2126e103b48fSeric } 2127bafdc4e5Seric if (s->s_hostsig != NULL) 2128bafdc4e5Seric len += strlen(s->s_hostsig) + 1; 2129bafdc4e5Seric p = xalloc(len); 2130bafdc4e5Seric if (s->s_hostsig != NULL) 2131bafdc4e5Seric { 2132bafdc4e5Seric (void) strcpy(p, s->s_hostsig); 2133bafdc4e5Seric free(s->s_hostsig); 2134bafdc4e5Seric s->s_hostsig = p; 2135bafdc4e5Seric p += strlen(p); 2136bafdc4e5Seric *p++ = ':'; 2137bafdc4e5Seric } 2138bafdc4e5Seric else 2139bafdc4e5Seric s->s_hostsig = p; 2140e103b48fSeric for (i = 0; i < nmx; i++) 2141e103b48fSeric { 2142e103b48fSeric if (i != 0) 2143e103b48fSeric *p++ = ':'; 2144e103b48fSeric strcpy(p, mxhosts[i]); 2145e103b48fSeric p += strlen(p); 2146e103b48fSeric } 2147bafdc4e5Seric if (endp != NULL) 2148bafdc4e5Seric *endp++ = ':'; 2149bafdc4e5Seric } 2150e103b48fSeric makelower(s->s_hostsig); 2151516782b4Seric if (ConfigLevel < 2) 2152516782b4Seric _res.options = oldoptions; 2153e103b48fSeric #else 2154e103b48fSeric /* not using BIND -- the signature is just the host name */ 2155e103b48fSeric s->s_hostsig = host; 2156e103b48fSeric #endif 2157e103b48fSeric if (tTd(17, 1)) 2158e103b48fSeric printf("hostsignature(%s) = %s\n", host, s->s_hostsig); 2159e103b48fSeric return s->s_hostsig; 2160e103b48fSeric } 2161