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*b6f89e6eSeric static char sccsid[] = "@(#)deliver.c 8.28 (Berkeley) 10/02/93"; 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; 4119c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 4129c9e68d9Seric { 413fdc75a0fSeric #ifdef XDEBUG 414fdc75a0fSeric char wbuf[MAXNAME + 20]; 415fdc75a0fSeric 416fdc75a0fSeric (void) sprintf(wbuf, "sendall(%s)", q->q_paddr); 417fdc75a0fSeric checkfd012(wbuf); 418fdc75a0fSeric #endif 4199c9e68d9Seric if (mode == SM_VERIFY) 4209c9e68d9Seric { 4219c9e68d9Seric e->e_to = q->q_paddr; 4229c9e68d9Seric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4238dfca105Seric { 4248dfca105Seric message("deliverable: mailer %s, host %s, user %s", 4258dfca105Seric q->q_mailer->m_name, 4268dfca105Seric q->q_host, 4278dfca105Seric q->q_user); 4288dfca105Seric } 4299c9e68d9Seric } 4309c9e68d9Seric else if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4319c9e68d9Seric { 4329c9e68d9Seric # ifdef QUEUE 4339c9e68d9Seric /* 4349c9e68d9Seric ** Checkpoint the send list every few addresses 4359c9e68d9Seric */ 4369c9e68d9Seric 4379c9e68d9Seric if (e->e_nsent >= CheckpointInterval) 4389c9e68d9Seric { 4399c9e68d9Seric queueup(e, TRUE, FALSE); 4409c9e68d9Seric e->e_nsent = 0; 4419c9e68d9Seric } 4429c9e68d9Seric # endif /* QUEUE */ 4439c9e68d9Seric (void) deliver(e, q); 4449c9e68d9Seric } 4459c9e68d9Seric } 4469c9e68d9Seric Verbose = oldverbose; 4479c9e68d9Seric 448fdc75a0fSeric #ifdef XDEBUG 449fdc75a0fSeric checkfd012("end of sendenvelope"); 450fdc75a0fSeric #endif 451fdc75a0fSeric 4529c9e68d9Seric if (mode == SM_FORK) 4539c9e68d9Seric finis(); 4549c9e68d9Seric } 4559c9e68d9Seric /* 4569c9e68d9Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 4579c9e68d9Seric ** 4589c9e68d9Seric ** This MUST be a macro, since after a vfork we are running 4599c9e68d9Seric ** two processes on the same stack!!! 4609c9e68d9Seric ** 4619c9e68d9Seric ** Parameters: 4629c9e68d9Seric ** none. 4639c9e68d9Seric ** 4649c9e68d9Seric ** Returns: 4659c9e68d9Seric ** From a macro??? You've got to be kidding! 4669c9e68d9Seric ** 4679c9e68d9Seric ** Side Effects: 4689c9e68d9Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 4699c9e68d9Seric ** pid of child in parent, zero in child. 4709c9e68d9Seric ** -1 on unrecoverable error. 4719c9e68d9Seric ** 4729c9e68d9Seric ** Notes: 4739c9e68d9Seric ** I'm awfully sorry this looks so awful. That's 4749c9e68d9Seric ** vfork for you..... 4759c9e68d9Seric */ 4769c9e68d9Seric 4779c9e68d9Seric # define NFORKTRIES 5 4789c9e68d9Seric 4799c9e68d9Seric # ifndef FORK 4809c9e68d9Seric # define FORK fork 4819c9e68d9Seric # endif 4829c9e68d9Seric 4839c9e68d9Seric # define DOFORK(fORKfN) \ 4849c9e68d9Seric {\ 4859c9e68d9Seric register int i;\ 4869c9e68d9Seric \ 4879c9e68d9Seric for (i = NFORKTRIES; --i >= 0; )\ 4889c9e68d9Seric {\ 4899c9e68d9Seric pid = fORKfN();\ 4909c9e68d9Seric if (pid >= 0)\ 4919c9e68d9Seric break;\ 4929c9e68d9Seric if (i > 0)\ 4939c9e68d9Seric sleep((unsigned) NFORKTRIES - i);\ 4949c9e68d9Seric }\ 4959c9e68d9Seric } 4969c9e68d9Seric /* 4979c9e68d9Seric ** DOFORK -- simple fork interface to DOFORK. 4989c9e68d9Seric ** 4999c9e68d9Seric ** Parameters: 5009c9e68d9Seric ** none. 5019c9e68d9Seric ** 5029c9e68d9Seric ** Returns: 5039c9e68d9Seric ** pid of child in parent. 5049c9e68d9Seric ** zero in child. 5059c9e68d9Seric ** -1 on error. 5069c9e68d9Seric ** 5079c9e68d9Seric ** Side Effects: 5089c9e68d9Seric ** returns twice, once in parent and once in child. 5099c9e68d9Seric */ 5109c9e68d9Seric 5119c9e68d9Seric dofork() 5129c9e68d9Seric { 5139c9e68d9Seric register int pid; 5149c9e68d9Seric 5159c9e68d9Seric DOFORK(fork); 5169c9e68d9Seric return (pid); 5179c9e68d9Seric } 5189c9e68d9Seric /* 51913bbc08cSeric ** DELIVER -- Deliver a message to a list of addresses. 52013bbc08cSeric ** 52113bbc08cSeric ** This routine delivers to everyone on the same host as the 52213bbc08cSeric ** user on the head of the list. It is clever about mailers 52313bbc08cSeric ** that don't handle multiple users. It is NOT guaranteed 52413bbc08cSeric ** that it will deliver to all these addresses however -- so 52513bbc08cSeric ** deliver should be called once for each address on the 52613bbc08cSeric ** list. 52725a99e2eSeric ** 52825a99e2eSeric ** Parameters: 529588cad61Seric ** e -- the envelope to deliver. 530c77d1c25Seric ** firstto -- head of the address list to deliver to. 53125a99e2eSeric ** 53225a99e2eSeric ** Returns: 53325a99e2eSeric ** zero -- successfully delivered. 53425a99e2eSeric ** else -- some failure, see ExitStat for more info. 53525a99e2eSeric ** 53625a99e2eSeric ** Side Effects: 53725a99e2eSeric ** The standard input is passed off to someone. 53825a99e2eSeric */ 53925a99e2eSeric 540588cad61Seric deliver(e, firstto) 541588cad61Seric register ENVELOPE *e; 542c77d1c25Seric ADDRESS *firstto; 54325a99e2eSeric { 54478442df3Seric char *host; /* host being sent to */ 54578442df3Seric char *user; /* user being sent to */ 54625a99e2eSeric char **pvp; 5475dfc646bSeric register char **mvp; 54825a99e2eSeric register char *p; 549588cad61Seric register MAILER *m; /* mailer for this recipient */ 5506259796dSeric ADDRESS *ctladdr; 551b31e7f2bSeric register MCI *mci; 552c77d1c25Seric register ADDRESS *to = firstto; 553c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 554772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 555911693bfSbostic int rcode; /* response code */ 556e103b48fSeric char *firstsig; /* signature of firstto */ 5579c9e68d9Seric int pid; 5589c9e68d9Seric char *curhost; 5599c9e68d9Seric int mpvect[2]; 5609c9e68d9Seric int rpvect[2]; 561ee6bf8dfSeric char *pv[MAXPV+1]; 562579ef0ddSeric char tobuf[TOBUFSIZE]; /* text line of to people */ 563ee6bf8dfSeric char buf[MAXNAME]; 564c23ed322Seric char rpathbuf[MAXNAME]; /* translated return path */ 565fabb3bd4Seric extern int checkcompat(); 5669c9e68d9Seric extern FILE *fdopen(); 56725a99e2eSeric 56835490626Seric errno = 0; 569ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags)) 5705dfc646bSeric return (0); 57125a99e2eSeric 572134746fbSeric #ifdef NAMED_BIND 573912a731aSbostic /* unless interactive, try twice, over a minute */ 574912a731aSbostic if (OpMode == MD_DAEMON || OpMode == MD_SMTP) { 575912a731aSbostic _res.retrans = 30; 576912a731aSbostic _res.retry = 2; 577912a731aSbostic } 578d4bd8f0eSbostic #endif 579912a731aSbostic 58051552439Seric m = to->q_mailer; 58151552439Seric host = to->q_host; 582c9be6216Seric CurEnv = e; /* just in case */ 5834384d521Seric e->e_statmsg = NULL; 58451552439Seric 5856ef48975Seric if (tTd(10, 1)) 5865dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 58751552439Seric m->m_mno, host, to->q_user); 588f3dbc832Seric 589f3dbc832Seric /* 590f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 591f3dbc832Seric ** connections now, just mark these addresses and return. 592f3dbc832Seric ** This is useful if we want to batch connections to 593f3dbc832Seric ** reduce load. This will cause the messages to be 594f3dbc832Seric ** queued up, and a daemon will come along to send the 595f3dbc832Seric ** messages later. 596f3dbc832Seric ** This should be on a per-mailer basis. 597f3dbc832Seric */ 598f3dbc832Seric 59979aa5155Seric if (NoConnect && bitnset(M_EXPENSIVE, m->m_flags) && !Verbose) 600f3dbc832Seric { 601f3dbc832Seric for (; to != NULL; to = to->q_next) 602f4560e80Seric { 603ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 604c6e18ac5Seric to->q_mailer != m) 605f4560e80Seric continue; 606268a25e1Seric to->q_flags |= QQUEUEUP; 607588cad61Seric e->e_to = to->q_paddr; 60808b25121Seric message("queued"); 6092f624c86Seric if (LogLevel > 8) 61081161401Seric logdelivery(m, NULL, "queued", e); 611f4560e80Seric } 612588cad61Seric e->e_to = NULL; 613f3dbc832Seric return (0); 614f3dbc832Seric } 615f3dbc832Seric 61625a99e2eSeric /* 6175dfc646bSeric ** Do initial argv setup. 6185dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 6195dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 6205dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 6215dfc646bSeric ** code does not check for 'pv' overflow; this places a 6225dfc646bSeric ** manifest lower limit of 4 for MAXPV. 6233bea8136Seric ** The from address rewrite is expected to make 6243bea8136Seric ** the address relative to the other end. 6255dfc646bSeric */ 6265dfc646bSeric 62778442df3Seric /* rewrite from address, using rewriting rules */ 628efe54562Seric rcode = EX_OK; 629efe54562Seric (void) strcpy(rpathbuf, remotename(e->e_from.q_paddr, m, 630efe54562Seric RF_SENDERADDR|RF_CANONICAL, 631efe54562Seric &rcode, e)); 632ee4b0922Seric define('g', rpathbuf, e); /* translated return path */ 633588cad61Seric define('h', host, e); /* to host */ 6345dfc646bSeric Errors = 0; 6355dfc646bSeric pvp = pv; 6365dfc646bSeric *pvp++ = m->m_argv[0]; 6375dfc646bSeric 6385dfc646bSeric /* insert -f or -r flag as appropriate */ 63957fc6f17Seric if (FromFlag && (bitnset(M_FOPT, m->m_flags) || bitnset(M_ROPT, m->m_flags))) 6405dfc646bSeric { 64157fc6f17Seric if (bitnset(M_FOPT, m->m_flags)) 6425dfc646bSeric *pvp++ = "-f"; 6435dfc646bSeric else 6445dfc646bSeric *pvp++ = "-r"; 645c23ed322Seric *pvp++ = newstr(rpathbuf); 6465dfc646bSeric } 6475dfc646bSeric 6485dfc646bSeric /* 6495dfc646bSeric ** Append the other fixed parts of the argv. These run 6505dfc646bSeric ** up to the first entry containing "$u". There can only 6515dfc646bSeric ** be one of these, and there are only a few more slots 6525dfc646bSeric ** in the pv after it. 6535dfc646bSeric */ 6545dfc646bSeric 6555dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 6565dfc646bSeric { 6572bc47524Seric /* can't use strchr here because of sign extension problems */ 6582bc47524Seric while (*p != '\0') 6592bc47524Seric { 6602bc47524Seric if ((*p++ & 0377) == MACROEXPAND) 6612bc47524Seric { 6622bc47524Seric if (*p == 'u') 6635dfc646bSeric break; 6642bc47524Seric } 6652bc47524Seric } 6662bc47524Seric 6672bc47524Seric if (*p != '\0') 6685dfc646bSeric break; 6695dfc646bSeric 6705dfc646bSeric /* this entry is safe -- go ahead and process it */ 671588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 6725dfc646bSeric *pvp++ = newstr(buf); 6735dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 6745dfc646bSeric { 67508b25121Seric syserr("554 Too many parameters to %s before $u", pv[0]); 6765dfc646bSeric return (-1); 6775dfc646bSeric } 6785dfc646bSeric } 679c579ef51Seric 68033db8731Seric /* 68133db8731Seric ** If we have no substitution for the user name in the argument 68233db8731Seric ** list, we know that we must supply the names otherwise -- and 68333db8731Seric ** SMTP is the answer!! 68433db8731Seric */ 68533db8731Seric 6865dfc646bSeric if (*mvp == NULL) 687c579ef51Seric { 688c579ef51Seric /* running SMTP */ 6892c7e1b8dSeric # ifdef SMTP 690c579ef51Seric clever = TRUE; 691c579ef51Seric *pvp = NULL; 6926c2c3107Seric # else /* SMTP */ 69333db8731Seric /* oops! we don't implement SMTP */ 69408b25121Seric syserr("554 SMTP style mailer"); 6952c7e1b8dSeric return (EX_SOFTWARE); 6966c2c3107Seric # endif /* SMTP */ 697c579ef51Seric } 6985dfc646bSeric 6995dfc646bSeric /* 7005dfc646bSeric ** At this point *mvp points to the argument with $u. We 7015dfc646bSeric ** run through our address list and append all the addresses 7025dfc646bSeric ** we can. If we run out of space, do not fret! We can 7035dfc646bSeric ** always send another copy later. 7045dfc646bSeric */ 7055dfc646bSeric 7065dfc646bSeric tobuf[0] = '\0'; 707588cad61Seric e->e_to = tobuf; 7086259796dSeric ctladdr = NULL; 709e103b48fSeric firstsig = hostsignature(firstto->q_mailer, firstto->q_host, e); 7105dfc646bSeric for (; to != NULL; to = to->q_next) 7115dfc646bSeric { 7125dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 71357fc6f17Seric if (tobuf[0] != '\0' && !bitnset(M_MUSER, m->m_flags)) 7145dfc646bSeric break; 7155dfc646bSeric 7165dfc646bSeric /* if already sent or not for this host, don't send */ 717ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 718e103b48fSeric to->q_mailer != firstto->q_mailer || 719e103b48fSeric strcmp(hostsignature(to->q_mailer, to->q_host, e), firstsig) != 0) 7205dfc646bSeric continue; 7216259796dSeric 7224b22ea87Seric /* avoid overflowing tobuf */ 723aa50a568Sbostic if (sizeof tobuf < (strlen(to->q_paddr) + strlen(tobuf) + 2)) 7244b22ea87Seric break; 7254b22ea87Seric 7266ef48975Seric if (tTd(10, 1)) 727772e6e50Seric { 728772e6e50Seric printf("\nsend to "); 729772e6e50Seric printaddr(to, FALSE); 730772e6e50Seric } 731772e6e50Seric 7326259796dSeric /* compute effective uid/gid when sending */ 7337da1035fSeric if (to->q_mailer == ProgMailer) 7346259796dSeric ctladdr = getctladdr(to); 7356259796dSeric 7365dfc646bSeric user = to->q_user; 737588cad61Seric e->e_to = to->q_paddr; 73875f1ade9Seric if (tTd(10, 5)) 73975f1ade9Seric { 74075f1ade9Seric printf("deliver: QDONTSEND "); 74175f1ade9Seric printaddr(to, FALSE); 74275f1ade9Seric } 743ee4b0922Seric to->q_flags |= QDONTSEND; 7445dfc646bSeric 7455dfc646bSeric /* 7465dfc646bSeric ** Check to see that these people are allowed to 7475dfc646bSeric ** talk to each other. 7482a6e0786Seric */ 7492a6e0786Seric 75069582d2fSeric if (m->m_maxsize != 0 && e->e_msgsize > m->m_maxsize) 75169582d2fSeric { 75269582d2fSeric NoReturn = TRUE; 75308b25121Seric usrerr("552 Message is too large; %ld bytes max", m->m_maxsize); 75481161401Seric giveresponse(EX_UNAVAILABLE, m, NULL, e); 75569582d2fSeric continue; 75669582d2fSeric } 757fabb3bd4Seric rcode = checkcompat(to, e); 7581793c9c5Seric if (rcode != EX_OK) 7595dfc646bSeric { 7601000c37aSeric markfailure(e, to, rcode); 76181161401Seric giveresponse(rcode, m, NULL, e); 7625dfc646bSeric continue; 7635dfc646bSeric } 7642a6e0786Seric 7652a6e0786Seric /* 7669ec9501bSeric ** Strip quote bits from names if the mailer is dumb 7679ec9501bSeric ** about them. 76825a99e2eSeric */ 76925a99e2eSeric 77057fc6f17Seric if (bitnset(M_STRIPQ, m->m_flags)) 77125a99e2eSeric { 7721d8f1806Seric stripquotes(user); 7731d8f1806Seric stripquotes(host); 77425a99e2eSeric } 77525a99e2eSeric 776cdb828c5Seric /* hack attack -- delivermail compatibility */ 777cdb828c5Seric if (m == ProgMailer && *user == '|') 778cdb828c5Seric user++; 779cdb828c5Seric 78025a99e2eSeric /* 7813efaed6eSeric ** If an error message has already been given, don't 7823efaed6eSeric ** bother to send to this address. 7833efaed6eSeric ** 7843efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 7853efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 7863efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 7873efaed6eSeric */ 7883efaed6eSeric 7896cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 7903efaed6eSeric continue; 7913efaed6eSeric 792f2fec898Seric /* save statistics.... */ 793588cad61Seric markstats(e, to); 794f2fec898Seric 7953efaed6eSeric /* 79625a99e2eSeric ** See if this user name is "special". 79725a99e2eSeric ** If the user name has a slash in it, assume that this 79851552439Seric ** is a file -- send it off without further ado. Note 79951552439Seric ** that this type of addresses is not processed along 80051552439Seric ** with the others, so we fudge on the To person. 80125a99e2eSeric */ 80225a99e2eSeric 8032c017f8dSeric if (m == FileMailer) 80425a99e2eSeric { 805b31e7f2bSeric rcode = mailfile(user, getctladdr(to), e); 80681161401Seric giveresponse(rcode, m, NULL, e); 807dde5acadSeric if (rcode == EX_OK) 808dde5acadSeric to->q_flags |= QSENT; 8095dfc646bSeric continue; 81025a99e2eSeric } 81125a99e2eSeric 81213bbc08cSeric /* 81313bbc08cSeric ** Address is verified -- add this user to mailer 81413bbc08cSeric ** argv, and add it to the print list of recipients. 81513bbc08cSeric */ 81613bbc08cSeric 817508daeccSeric /* link together the chain of recipients */ 818508daeccSeric to->q_tchain = tochain; 819508daeccSeric tochain = to; 820508daeccSeric 8215dfc646bSeric /* create list of users for error messages */ 822db8841e9Seric (void) strcat(tobuf, ","); 823db8841e9Seric (void) strcat(tobuf, to->q_paddr); 824588cad61Seric define('u', user, e); /* to user */ 825*b6f89e6eSeric p = to->q_home; 826*b6f89e6eSeric if (p == NULL && ctladdr != NULL) 827*b6f89e6eSeric p = ctladdr->q_home; 828*b6f89e6eSeric define('z', p, e); /* user's home */ 8295dfc646bSeric 830c579ef51Seric /* 831508daeccSeric ** Expand out this user into argument list. 832c579ef51Seric */ 833c579ef51Seric 834508daeccSeric if (!clever) 835c579ef51Seric { 836588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8375dfc646bSeric *pvp++ = newstr(buf); 8385dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 8395dfc646bSeric { 8405dfc646bSeric /* allow some space for trailing parms */ 8415dfc646bSeric break; 8425dfc646bSeric } 8435dfc646bSeric } 844c579ef51Seric } 8455dfc646bSeric 846145b49b1Seric /* see if any addresses still exist */ 847145b49b1Seric if (tobuf[0] == '\0') 848c579ef51Seric { 849588cad61Seric define('g', (char *) NULL, e); 850145b49b1Seric return (0); 851c579ef51Seric } 852145b49b1Seric 8535dfc646bSeric /* print out messages as full list */ 85463780dbdSeric e->e_to = tobuf + 1; 8555dfc646bSeric 8565dfc646bSeric /* 8575dfc646bSeric ** Fill out any parameters after the $u parameter. 8585dfc646bSeric */ 8595dfc646bSeric 860c579ef51Seric while (!clever && *++mvp != NULL) 8615dfc646bSeric { 862588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8635dfc646bSeric *pvp++ = newstr(buf); 8645dfc646bSeric if (pvp >= &pv[MAXPV]) 86508b25121Seric syserr("554 deliver: pv overflow after $u for %s", pv[0]); 8665dfc646bSeric } 8675dfc646bSeric *pvp++ = NULL; 8685dfc646bSeric 86925a99e2eSeric /* 87025a99e2eSeric ** Call the mailer. 8716328bdf7Seric ** The argument vector gets built, pipes 87225a99e2eSeric ** are created as necessary, and we fork & exec as 8736328bdf7Seric ** appropriate. 874c579ef51Seric ** If we are running SMTP, we just need to clean up. 87525a99e2eSeric */ 87625a99e2eSeric 8777ee87e5fSeric if (ctladdr == NULL && m != ProgMailer) 87886b26461Seric ctladdr = &e->e_from; 879134746fbSeric #ifdef NAMED_BIND 8802bcc6d2dSeric if (ConfigLevel < 2) 881912a731aSbostic _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 882134746fbSeric #endif 8839c9e68d9Seric 8849c9e68d9Seric if (tTd(11, 1)) 885134746fbSeric { 8869c9e68d9Seric printf("openmailer:"); 8879c9e68d9Seric printav(pv); 8889c9e68d9Seric } 8899c9e68d9Seric errno = 0; 8909c9e68d9Seric 8919c9e68d9Seric CurHostName = m->m_mailer; 8929c9e68d9Seric 8939c9e68d9Seric /* 8949c9e68d9Seric ** Deal with the special case of mail handled through an IPC 8959c9e68d9Seric ** connection. 8969c9e68d9Seric ** In this case we don't actually fork. We must be 8979c9e68d9Seric ** running SMTP for this to work. We will return a 8989c9e68d9Seric ** zero pid to indicate that we are running IPC. 8999c9e68d9Seric ** We also handle a debug version that just talks to stdin/out. 9009c9e68d9Seric */ 9019c9e68d9Seric 9029c9e68d9Seric curhost = NULL; 903c931b82bSeric SmtpPhase = NULL; 9049c9e68d9Seric 9057febfd66Seric #ifdef XDEBUG 9067febfd66Seric { 9077febfd66Seric char wbuf[MAXLINE]; 9087febfd66Seric 9097febfd66Seric /* make absolutely certain 0, 1, and 2 are in use */ 9107febfd66Seric sprintf(wbuf, "%s... openmailer(%s)", e->e_to, m->m_name); 9117febfd66Seric checkfd012(wbuf); 9127febfd66Seric } 9137febfd66Seric #endif 9147febfd66Seric 9157febfd66Seric 9169c9e68d9Seric /* check for Local Person Communication -- not for mortals!!! */ 9179c9e68d9Seric if (strcmp(m->m_mailer, "[LPC]") == 0) 9189c9e68d9Seric { 9199c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 9209c9e68d9Seric bzero((char *) mci, sizeof *mci); 9219c9e68d9Seric mci->mci_in = stdin; 9229c9e68d9Seric mci->mci_out = stdout; 9239c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 9249c9e68d9Seric mci->mci_mailer = m; 9259c9e68d9Seric } 9269c9e68d9Seric else if (strcmp(m->m_mailer, "[IPC]") == 0 || 9279c9e68d9Seric strcmp(m->m_mailer, "[TCP]") == 0) 9289c9e68d9Seric { 9299c9e68d9Seric #ifdef DAEMON 9309c9e68d9Seric register int i; 9319c9e68d9Seric register u_short port; 9329c9e68d9Seric 9339c9e68d9Seric CurHostName = pv[1]; 9349c9e68d9Seric curhost = hostsignature(m, pv[1], e); 9359c9e68d9Seric 9369c9e68d9Seric if (curhost == NULL || curhost[0] == '\0') 9379c9e68d9Seric { 9389c9e68d9Seric syserr("null signature"); 939845e533cSeric rcode = EX_OSERR; 940b31e7f2bSeric goto give_up; 941b31e7f2bSeric } 9429c9e68d9Seric 9439c9e68d9Seric if (!clever) 9449c9e68d9Seric { 9459c9e68d9Seric syserr("554 non-clever IPC"); 9469c9e68d9Seric rcode = EX_OSERR; 9479c9e68d9Seric goto give_up; 9489c9e68d9Seric } 9499c9e68d9Seric if (pv[2] != NULL) 9509c9e68d9Seric port = atoi(pv[2]); 9519c9e68d9Seric else 9529c9e68d9Seric port = 0; 9539c9e68d9Seric tryhost: 9549c9e68d9Seric mci = NULL; 9559c9e68d9Seric while (*curhost != '\0') 9569c9e68d9Seric { 9579c9e68d9Seric register char *p; 9589c9e68d9Seric static char hostbuf[MAXNAME]; 9599c9e68d9Seric 9609c9e68d9Seric mci = NULL; 9619c9e68d9Seric 9629c9e68d9Seric /* pull the next host from the signature */ 9639c9e68d9Seric p = strchr(curhost, ':'); 9649c9e68d9Seric if (p == NULL) 9659c9e68d9Seric p = &curhost[strlen(curhost)]; 9669c9e68d9Seric strncpy(hostbuf, curhost, p - curhost); 9679c9e68d9Seric hostbuf[p - curhost] = '\0'; 9689c9e68d9Seric if (*p != '\0') 9699c9e68d9Seric p++; 9709c9e68d9Seric curhost = p; 9719c9e68d9Seric 9729c9e68d9Seric /* see if we already know that this host is fried */ 9739c9e68d9Seric CurHostName = hostbuf; 9749c9e68d9Seric mci = mci_get(hostbuf, m); 9759c9e68d9Seric if (mci->mci_state != MCIS_CLOSED) 9769c9e68d9Seric { 9779c9e68d9Seric if (tTd(11, 1)) 9789c9e68d9Seric { 9799c9e68d9Seric printf("openmailer: "); 9809c9e68d9Seric mci_dump(mci); 9819c9e68d9Seric } 9829c9e68d9Seric CurHostName = mci->mci_host; 9839c9e68d9Seric break; 9849c9e68d9Seric } 9859c9e68d9Seric mci->mci_mailer = m; 9869c9e68d9Seric if (mci->mci_exitstat != EX_OK) 9879c9e68d9Seric continue; 9889c9e68d9Seric 9899c9e68d9Seric /* try the connection */ 9909c9e68d9Seric setproctitle("%s %s: %s", e->e_id, hostbuf, "user open"); 9919c9e68d9Seric message("Connecting to %s (%s)...", 9929c9e68d9Seric hostbuf, m->m_name); 9939c9e68d9Seric i = makeconnection(hostbuf, port, mci, 9949c9e68d9Seric bitnset(M_SECURE_PORT, m->m_flags)); 9959c9e68d9Seric mci->mci_exitstat = i; 9969c9e68d9Seric mci->mci_errno = errno; 997f170942cSeric #ifdef NAMED_BIND 998f170942cSeric mci->mci_herrno = h_errno; 999f170942cSeric #endif 10009c9e68d9Seric if (i == EX_OK) 10019c9e68d9Seric { 10029c9e68d9Seric mci->mci_state = MCIS_OPENING; 10039c9e68d9Seric mci_cache(mci); 1004f170942cSeric if (TrafficLogFile != NULL) 1005f170942cSeric fprintf(TrafficLogFile, "%05d == CONNECT %s\n", 1006f170942cSeric getpid(), hostbuf); 10079c9e68d9Seric break; 10089c9e68d9Seric } 10099c9e68d9Seric else if (tTd(11, 1)) 10109c9e68d9Seric printf("openmailer: makeconnection => stat=%d, errno=%d\n", 10119c9e68d9Seric i, errno); 10129c9e68d9Seric 10139c9e68d9Seric 10149c9e68d9Seric /* enter status of this host */ 10159c9e68d9Seric setstat(i); 10169c9e68d9Seric } 10179c9e68d9Seric mci->mci_pid = 0; 10189c9e68d9Seric #else /* no DAEMON */ 10199c9e68d9Seric syserr("554 openmailer: no IPC"); 10209c9e68d9Seric if (tTd(11, 1)) 10219c9e68d9Seric printf("openmailer: NULL\n"); 10229c9e68d9Seric return NULL; 10239c9e68d9Seric #endif /* DAEMON */ 10249c9e68d9Seric } 10259c9e68d9Seric else 10269c9e68d9Seric { 1027f170942cSeric if (TrafficLogFile != NULL) 10280e3bfef5Seric { 1029f170942cSeric char **av; 1030f170942cSeric 1031f170942cSeric fprintf(TrafficLogFile, "%05d === EXEC", getpid()); 1032f170942cSeric for (av = pv; *av != NULL; av++) 1033f170942cSeric fprintf(TrafficLogFile, " %s", *av); 1034f170942cSeric fprintf(TrafficLogFile, "\n"); 10356fe8c3bcSeric } 10366fe8c3bcSeric 10379c9e68d9Seric /* create a pipe to shove the mail through */ 10389c9e68d9Seric if (pipe(mpvect) < 0) 10399c9e68d9Seric { 10400e3bfef5Seric syserr("%s... openmailer(%s): pipe (to mailer)", 10410e3bfef5Seric e->e_to, m->m_name); 10429c9e68d9Seric if (tTd(11, 1)) 10439c9e68d9Seric printf("openmailer: NULL\n"); 10449c9e68d9Seric rcode = EX_OSERR; 10459c9e68d9Seric goto give_up; 10469c9e68d9Seric } 10479c9e68d9Seric 10489c9e68d9Seric /* if this mailer speaks smtp, create a return pipe */ 10499c9e68d9Seric if (clever && pipe(rpvect) < 0) 10509c9e68d9Seric { 10510e3bfef5Seric syserr("%s... openmailer(%s): pipe (from mailer)", 10520e3bfef5Seric e->e_to, m->m_name); 10539c9e68d9Seric (void) close(mpvect[0]); 10549c9e68d9Seric (void) close(mpvect[1]); 10559c9e68d9Seric if (tTd(11, 1)) 10569c9e68d9Seric printf("openmailer: NULL\n"); 10579c9e68d9Seric rcode = EX_OSERR; 10589c9e68d9Seric goto give_up; 10599c9e68d9Seric } 10609c9e68d9Seric 10619c9e68d9Seric /* 10629c9e68d9Seric ** Actually fork the mailer process. 10639c9e68d9Seric ** DOFORK is clever about retrying. 10649c9e68d9Seric ** 10659c9e68d9Seric ** Dispose of SIGCHLD signal catchers that may be laying 10669c9e68d9Seric ** around so that endmail will get it. 10679c9e68d9Seric */ 10689c9e68d9Seric 10699c9e68d9Seric if (e->e_xfp != NULL) 10709c9e68d9Seric (void) fflush(e->e_xfp); /* for debugging */ 10719c9e68d9Seric (void) fflush(stdout); 10729c9e68d9Seric # ifdef SIGCHLD 10732b9178d3Seric (void) setsignal(SIGCHLD, SIG_DFL); 10749c9e68d9Seric # endif /* SIGCHLD */ 10759c9e68d9Seric DOFORK(FORK); 10769c9e68d9Seric /* pid is set by DOFORK */ 10779c9e68d9Seric if (pid < 0) 10789c9e68d9Seric { 10799c9e68d9Seric /* failure */ 10800e3bfef5Seric syserr("%s... openmailer(%s): cannot fork", 10810e3bfef5Seric e->e_to, m->m_name); 10829c9e68d9Seric (void) close(mpvect[0]); 10839c9e68d9Seric (void) close(mpvect[1]); 10849c9e68d9Seric if (clever) 10859c9e68d9Seric { 10869c9e68d9Seric (void) close(rpvect[0]); 10879c9e68d9Seric (void) close(rpvect[1]); 10889c9e68d9Seric } 10899c9e68d9Seric if (tTd(11, 1)) 10909c9e68d9Seric printf("openmailer: NULL\n"); 10919c9e68d9Seric rcode = EX_OSERR; 10929c9e68d9Seric goto give_up; 10939c9e68d9Seric } 10949c9e68d9Seric else if (pid == 0) 10959c9e68d9Seric { 10969c9e68d9Seric int i; 10979c9e68d9Seric int saveerrno; 10989c9e68d9Seric char **ep; 10999c9e68d9Seric char *env[MAXUSERENVIRON]; 11009c9e68d9Seric extern char **environ; 11019c9e68d9Seric extern int DtableSize; 11029c9e68d9Seric 11039c9e68d9Seric /* child -- set up input & exec mailer */ 11042b9178d3Seric (void) setsignal(SIGINT, SIG_IGN); 11052b9178d3Seric (void) setsignal(SIGHUP, SIG_IGN); 11062b9178d3Seric (void) setsignal(SIGTERM, SIG_DFL); 11079c9e68d9Seric 11089c9e68d9Seric /* close any other cached connections */ 11099c9e68d9Seric mci_flush(FALSE, mci); 11109c9e68d9Seric 111144f2317fSeric /* reset user and group */ 111244f2317fSeric if (!bitnset(M_RESTR, m->m_flags)) 111344f2317fSeric { 111444f2317fSeric if (ctladdr == NULL || ctladdr->q_uid == 0) 111544f2317fSeric { 111644f2317fSeric (void) initgroups(DefUser, DefGid); 111744f2317fSeric (void) setuid(DefUid); 111844f2317fSeric } 111944f2317fSeric else 112044f2317fSeric { 112144f2317fSeric (void) initgroups(ctladdr->q_ruser? 112244f2317fSeric ctladdr->q_ruser: ctladdr->q_user, 112344f2317fSeric ctladdr->q_gid); 112444f2317fSeric (void) setuid(ctladdr->q_uid); 112544f2317fSeric } 112644f2317fSeric } 112744f2317fSeric 112844f2317fSeric if (tTd(11, 2)) 112944f2317fSeric printf("openmailer: running as r/euid=%d/%d\n", 113044f2317fSeric getuid(), geteuid()); 113144f2317fSeric 1132b986f6aaSeric /* move into some "safe" directory */ 1133b986f6aaSeric if (m->m_execdir != NULL) 1134b986f6aaSeric { 1135b986f6aaSeric char *p, *q; 1136b986f6aaSeric char buf[MAXLINE]; 1137b986f6aaSeric 1138b986f6aaSeric for (p = m->m_execdir; p != NULL; p = q) 1139b986f6aaSeric { 1140b986f6aaSeric q = strchr(p, ':'); 1141b986f6aaSeric if (q != NULL) 1142b986f6aaSeric *q = '\0'; 1143b986f6aaSeric expand(p, buf, &buf[sizeof buf] - 1, e); 1144b986f6aaSeric if (q != NULL) 1145b986f6aaSeric *q++ = ':'; 1146b986f6aaSeric if (tTd(11, 20)) 1147b986f6aaSeric printf("openmailer: trydir %s\n", 1148b986f6aaSeric buf); 1149b986f6aaSeric if (buf[0] != '\0' && chdir(buf) >= 0) 1150b986f6aaSeric break; 1151b986f6aaSeric } 1152b986f6aaSeric } 1153b986f6aaSeric 11549c9e68d9Seric /* arrange to filter std & diag output of command */ 11559c9e68d9Seric if (clever) 11569c9e68d9Seric { 11579c9e68d9Seric (void) close(rpvect[0]); 11586fe8c3bcSeric if (dup2(rpvect[1], STDOUT_FILENO) < 0) 11596fe8c3bcSeric { 11600e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdout", 11610e3bfef5Seric e->e_to, m->m_name, rpvect[1]); 11626fe8c3bcSeric _exit(EX_OSERR); 11636fe8c3bcSeric } 11649c9e68d9Seric (void) close(rpvect[1]); 11659c9e68d9Seric } 11669c9e68d9Seric else if (OpMode == MD_SMTP || HoldErrs) 11679c9e68d9Seric { 11689c9e68d9Seric /* put mailer output in transcript */ 11696fe8c3bcSeric if (dup2(fileno(e->e_xfp), STDOUT_FILENO) < 0) 11706fe8c3bcSeric { 11710e3bfef5Seric syserr("%s... openmailer(%s): cannot dup xscript %d for stdout", 11720e3bfef5Seric e->e_to, m->m_name, 11736fe8c3bcSeric fileno(e->e_xfp)); 11746fe8c3bcSeric _exit(EX_OSERR); 11759c9e68d9Seric } 11766fe8c3bcSeric } 11776fe8c3bcSeric if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0) 11786fe8c3bcSeric { 11790e3bfef5Seric syserr("%s... openmailer(%s): cannot dup stdout for stderr", 11800e3bfef5Seric e->e_to, m->m_name); 11816fe8c3bcSeric _exit(EX_OSERR); 11826fe8c3bcSeric } 11839c9e68d9Seric 11849c9e68d9Seric /* arrange to get standard input */ 11859c9e68d9Seric (void) close(mpvect[1]); 11869c9e68d9Seric if (dup2(mpvect[0], STDIN_FILENO) < 0) 11879c9e68d9Seric { 11880e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdin", 11890e3bfef5Seric e->e_to, m->m_name, mpvect[0]); 11909c9e68d9Seric _exit(EX_OSERR); 11919c9e68d9Seric } 11929c9e68d9Seric (void) close(mpvect[0]); 11939c9e68d9Seric 11949c9e68d9Seric /* arrange for all the files to be closed */ 11959c9e68d9Seric for (i = 3; i < DtableSize; i++) 11969c9e68d9Seric { 11979c9e68d9Seric register int j; 119844f2317fSeric 11999c9e68d9Seric if ((j = fcntl(i, F_GETFD, 0)) != -1) 12009c9e68d9Seric (void) fcntl(i, F_SETFD, j | 1); 12019c9e68d9Seric } 12029c9e68d9Seric 12039c9e68d9Seric /* set up the mailer environment */ 12049c9e68d9Seric i = 0; 12059c9e68d9Seric env[i++] = "AGENT=sendmail"; 12069c9e68d9Seric for (ep = environ; *ep != NULL; ep++) 12079c9e68d9Seric { 12089c9e68d9Seric if (strncmp(*ep, "TZ=", 3) == 0) 12099c9e68d9Seric env[i++] = *ep; 12109c9e68d9Seric } 12119c9e68d9Seric env[i++] = NULL; 12129c9e68d9Seric 12139c9e68d9Seric /* try to execute the mailer */ 12149c9e68d9Seric execve(m->m_mailer, pv, env); 12159c9e68d9Seric saveerrno = errno; 12169c9e68d9Seric syserr("Cannot exec %s", m->m_mailer); 12177c941fd2Seric if (m == LocalMailer || transienterror(saveerrno)) 12187c941fd2Seric _exit(EX_OSERR); 12199c9e68d9Seric _exit(EX_UNAVAILABLE); 12209c9e68d9Seric } 12219c9e68d9Seric 12229c9e68d9Seric /* 12239c9e68d9Seric ** Set up return value. 12249c9e68d9Seric */ 12259c9e68d9Seric 12269c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 12279c9e68d9Seric bzero((char *) mci, sizeof *mci); 12289c9e68d9Seric mci->mci_mailer = m; 12299c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 12309c9e68d9Seric mci->mci_pid = pid; 12319c9e68d9Seric (void) close(mpvect[0]); 12329c9e68d9Seric mci->mci_out = fdopen(mpvect[1], "w"); 12339c9e68d9Seric if (clever) 12349c9e68d9Seric { 12359c9e68d9Seric (void) close(rpvect[1]); 12369c9e68d9Seric mci->mci_in = fdopen(rpvect[0], "r"); 12379c9e68d9Seric } 12389c9e68d9Seric else 12399c9e68d9Seric { 12409c9e68d9Seric mci->mci_flags |= MCIF_TEMP; 12419c9e68d9Seric mci->mci_in = NULL; 12429c9e68d9Seric } 12439c9e68d9Seric } 12449c9e68d9Seric 12459c9e68d9Seric /* 12469c9e68d9Seric ** If we are in SMTP opening state, send initial protocol. 12479c9e68d9Seric */ 12489c9e68d9Seric 12499c9e68d9Seric if (clever && mci->mci_state != MCIS_CLOSED) 12509c9e68d9Seric { 12519c9e68d9Seric smtpinit(m, mci, e); 12529c9e68d9Seric } 12539c9e68d9Seric if (tTd(11, 1)) 12549c9e68d9Seric { 12559c9e68d9Seric printf("openmailer: "); 12569c9e68d9Seric mci_dump(mci); 12579c9e68d9Seric } 12589c9e68d9Seric 12599c9e68d9Seric if (mci->mci_state != MCIS_OPEN) 1260b31e7f2bSeric { 1261b31e7f2bSeric /* couldn't open the mailer */ 1262b31e7f2bSeric rcode = mci->mci_exitstat; 12632a6bc25bSeric errno = mci->mci_errno; 1264f170942cSeric #ifdef NAMED_BIND 1265f170942cSeric h_errno = mci->mci_herrno; 1266f170942cSeric #endif 1267b31e7f2bSeric if (rcode == EX_OK) 1268b31e7f2bSeric { 1269b31e7f2bSeric /* shouldn't happen */ 127008b25121Seric syserr("554 deliver: rcode=%d, mci_state=%d, sig=%s", 12716b0f339dSeric rcode, mci->mci_state, firstsig); 1272b31e7f2bSeric rcode = EX_SOFTWARE; 1273b31e7f2bSeric } 1274e9277e33Seric else if (rcode == EX_TEMPFAIL && *curhost != '\0') 127590891494Seric { 127690891494Seric /* try next MX site */ 127790891494Seric goto tryhost; 127890891494Seric } 1279b31e7f2bSeric } 1280b31e7f2bSeric else if (!clever) 1281b31e7f2bSeric { 1282b31e7f2bSeric /* 1283b31e7f2bSeric ** Format and send message. 1284b31e7f2bSeric */ 128515d084d5Seric 1286b31e7f2bSeric putfromline(mci->mci_out, m, e); 1287b31e7f2bSeric (*e->e_puthdr)(mci->mci_out, m, e); 1288b31e7f2bSeric putline("\n", mci->mci_out, m); 128903c02fdeSeric (*e->e_putbody)(mci->mci_out, m, e, NULL); 1290b31e7f2bSeric 1291b31e7f2bSeric /* get the exit status */ 1292c9be6216Seric rcode = endmailer(mci, e, pv); 1293134746fbSeric } 1294134746fbSeric else 1295b31e7f2bSeric #ifdef SMTP 1296134746fbSeric { 1297b31e7f2bSeric /* 1298b31e7f2bSeric ** Send the MAIL FROM: protocol 1299b31e7f2bSeric */ 130015d084d5Seric 1301b31e7f2bSeric rcode = smtpmailfrom(m, mci, e); 1302b31e7f2bSeric if (rcode == EX_OK) 130375889e88Seric { 1304ded0d3daSkarels register char *t = tobuf; 1305ded0d3daSkarels register int i; 1306ded0d3daSkarels 1307588cad61Seric /* send the recipient list */ 130863780dbdSeric tobuf[0] = '\0'; 130975889e88Seric for (to = tochain; to != NULL; to = to->q_tchain) 131075889e88Seric { 131163780dbdSeric e->e_to = to->q_paddr; 131215d084d5Seric if ((i = smtprcpt(to, m, mci, e)) != EX_OK) 131375889e88Seric { 131483b7ddc9Seric markfailure(e, to, i); 131581161401Seric giveresponse(i, m, mci, e); 131663780dbdSeric } 131775889e88Seric else 131875889e88Seric { 1319911693bfSbostic *t++ = ','; 1320b31e7f2bSeric for (p = to->q_paddr; *p; *t++ = *p++) 1321b31e7f2bSeric continue; 1322ee39df61Seric *t = '\0'; 1323588cad61Seric } 1324588cad61Seric } 1325588cad61Seric 132663780dbdSeric /* now send the data */ 132763780dbdSeric if (tobuf[0] == '\0') 1328b31e7f2bSeric { 13299c9e68d9Seric rcode = EX_OK; 133063780dbdSeric e->e_to = NULL; 1331b31e7f2bSeric if (bitset(MCIF_CACHED, mci->mci_flags)) 1332b31e7f2bSeric smtprset(m, mci, e); 1333b31e7f2bSeric } 133475889e88Seric else 133575889e88Seric { 133663780dbdSeric e->e_to = tobuf + 1; 133775889e88Seric rcode = smtpdata(m, mci, e); 133863780dbdSeric } 133963780dbdSeric 134063780dbdSeric /* now close the connection */ 1341b31e7f2bSeric if (!bitset(MCIF_CACHED, mci->mci_flags)) 134215d084d5Seric smtpquit(m, mci, e); 134363780dbdSeric } 13449c9e68d9Seric if (rcode != EX_OK && *curhost != '\0') 13459c9e68d9Seric { 13469c9e68d9Seric /* try next MX site */ 13479c9e68d9Seric goto tryhost; 13489c9e68d9Seric } 1349c579ef51Seric } 1350b31e7f2bSeric #else /* not SMTP */ 1351a05b3449Sbostic { 135208b25121Seric syserr("554 deliver: need SMTP compiled to use clever mailer"); 1353845e533cSeric rcode = EX_CONFIG; 1354b31e7f2bSeric goto give_up; 1355a05b3449Sbostic } 1356b31e7f2bSeric #endif /* SMTP */ 1357134746fbSeric #ifdef NAMED_BIND 13582bcc6d2dSeric if (ConfigLevel < 2) 1359912a731aSbostic _res.options |= RES_DEFNAMES | RES_DNSRCH; /* XXX */ 1360134746fbSeric #endif 13615dfc646bSeric 1362b31e7f2bSeric /* arrange a return receipt if requested */ 13638c13bf07Seric if (e->e_receiptto != NULL && bitnset(M_LOCALMAILER, m->m_flags)) 1364b31e7f2bSeric { 1365b31e7f2bSeric e->e_flags |= EF_SENDRECEIPT; 1366b31e7f2bSeric /* do we want to send back more info? */ 1367b31e7f2bSeric } 1368b31e7f2bSeric 1369c77d1c25Seric /* 137063780dbdSeric ** Do final status disposal. 137163780dbdSeric ** We check for something in tobuf for the SMTP case. 1372c77d1c25Seric ** If we got a temporary failure, arrange to queue the 1373c77d1c25Seric ** addressees. 1374c77d1c25Seric */ 1375c77d1c25Seric 1376b31e7f2bSeric give_up: 137763780dbdSeric if (tobuf[0] != '\0') 137881161401Seric giveresponse(rcode, m, mci, e); 1379772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 1380b31e7f2bSeric { 1381dde5acadSeric if (rcode != EX_OK) 138283b7ddc9Seric markfailure(e, to, rcode); 1383dde5acadSeric else 1384655518ecSeric { 1385dde5acadSeric to->q_flags |= QSENT; 1386655518ecSeric e->e_nsent++; 1387655518ecSeric } 1388b31e7f2bSeric } 1389b31e7f2bSeric 1390b31e7f2bSeric /* 1391b31e7f2bSeric ** Restore state and return. 1392b31e7f2bSeric */ 1393c77d1c25Seric 13947febfd66Seric #ifdef XDEBUG 13957febfd66Seric { 13967febfd66Seric char wbuf[MAXLINE]; 13977febfd66Seric 13987febfd66Seric /* make absolutely certain 0, 1, and 2 are in use */ 139944622ea3Seric sprintf(wbuf, "%s... end of deliver(%s)", 140044622ea3Seric e->e_to == NULL ? "NO-TO-LIST" : e->e_to, 140144622ea3Seric m->m_name); 14027febfd66Seric checkfd012(wbuf); 14037febfd66Seric } 14047febfd66Seric #endif 14057febfd66Seric 140635490626Seric errno = 0; 1407588cad61Seric define('g', (char *) NULL, e); 14085826d9d3Seric return (rcode); 140925a99e2eSeric } 14105dfc646bSeric /* 141183b7ddc9Seric ** MARKFAILURE -- mark a failure on a specific address. 141283b7ddc9Seric ** 141383b7ddc9Seric ** Parameters: 141483b7ddc9Seric ** e -- the envelope we are sending. 141583b7ddc9Seric ** q -- the address to mark. 141683b7ddc9Seric ** rcode -- the code signifying the particular failure. 141783b7ddc9Seric ** 141883b7ddc9Seric ** Returns: 141983b7ddc9Seric ** none. 142083b7ddc9Seric ** 142183b7ddc9Seric ** Side Effects: 142283b7ddc9Seric ** marks the address (and possibly the envelope) with the 142383b7ddc9Seric ** failure so that an error will be returned or 142483b7ddc9Seric ** the message will be queued, as appropriate. 142583b7ddc9Seric */ 142683b7ddc9Seric 142783b7ddc9Seric markfailure(e, q, rcode) 142883b7ddc9Seric register ENVELOPE *e; 142983b7ddc9Seric register ADDRESS *q; 143083b7ddc9Seric int rcode; 143183b7ddc9Seric { 143219c47125Seric char buf[MAXLINE]; 143319c47125Seric 143483b7ddc9Seric if (rcode == EX_OK) 143583b7ddc9Seric return; 1436f170942cSeric else if (rcode == EX_TEMPFAIL) 143783b7ddc9Seric q->q_flags |= QQUEUEUP; 1438f170942cSeric else if (rcode != EX_IOERR && rcode != EX_OSERR) 1439f170942cSeric q->q_flags |= QBADADDR; 144083b7ddc9Seric } 144183b7ddc9Seric /* 1442c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 1443c579ef51Seric ** 1444c579ef51Seric ** We should never get fatal errors (e.g., segmentation 1445c579ef51Seric ** violation), so we report those specially. For other 1446c579ef51Seric ** errors, we choose a status message (into statmsg), 1447c579ef51Seric ** and if it represents an error, we print it. 1448c579ef51Seric ** 1449c579ef51Seric ** Parameters: 1450c579ef51Seric ** pid -- pid of mailer. 1451c9be6216Seric ** e -- the current envelope. 1452c9be6216Seric ** pv -- the parameter vector that invoked the mailer 1453c9be6216Seric ** (for error messages). 1454c579ef51Seric ** 1455c579ef51Seric ** Returns: 1456c579ef51Seric ** exit code of mailer. 1457c579ef51Seric ** 1458c579ef51Seric ** Side Effects: 1459c579ef51Seric ** none. 1460c579ef51Seric */ 1461c579ef51Seric 1462c9be6216Seric endmailer(mci, e, pv) 1463b31e7f2bSeric register MCI *mci; 1464c9be6216Seric register ENVELOPE *e; 1465c9be6216Seric char **pv; 1466c579ef51Seric { 1467588cad61Seric int st; 1468c579ef51Seric 146975889e88Seric /* close any connections */ 147075889e88Seric if (mci->mci_in != NULL) 1471c9be6216Seric (void) xfclose(mci->mci_in, pv[0], "mci_in"); 147275889e88Seric if (mci->mci_out != NULL) 1473c9be6216Seric (void) xfclose(mci->mci_out, pv[0], "mci_out"); 147475889e88Seric mci->mci_in = mci->mci_out = NULL; 147575889e88Seric mci->mci_state = MCIS_CLOSED; 147675889e88Seric 147733db8731Seric /* in the IPC case there is nothing to wait for */ 147875889e88Seric if (mci->mci_pid == 0) 147933db8731Seric return (EX_OK); 148033db8731Seric 148133db8731Seric /* wait for the mailer process to die and collect status */ 148275889e88Seric st = waitfor(mci->mci_pid); 1483588cad61Seric if (st == -1) 148478de67c1Seric { 1485c9be6216Seric syserr("endmailer %s: wait", pv[0]); 1486588cad61Seric return (EX_SOFTWARE); 1487c579ef51Seric } 148833db8731Seric 1489bf9bc890Seric if (WIFEXITED(st)) 1490c579ef51Seric { 1491bf9bc890Seric /* normal death -- return status */ 1492bf9bc890Seric return (WEXITSTATUS(st)); 1493bf9bc890Seric } 1494bf9bc890Seric 1495bf9bc890Seric /* it died a horrid death */ 1496c9be6216Seric syserr("mailer %s died with signal %o", pv[0], st); 1497c9be6216Seric 1498c9be6216Seric /* log the arguments */ 1499c9be6216Seric if (e->e_xfp != NULL) 1500c9be6216Seric { 1501c9be6216Seric register char **av; 1502c9be6216Seric 1503c9be6216Seric fprintf(e->e_xfp, "Arguments:"); 1504c9be6216Seric for (av = pv; *av != NULL; av++) 1505c9be6216Seric fprintf(e->e_xfp, " %s", *av); 1506c9be6216Seric fprintf(e->e_xfp, "\n"); 1507c9be6216Seric } 1508c9be6216Seric 15095f73204aSeric ExitStat = EX_TEMPFAIL; 15105f73204aSeric return (EX_TEMPFAIL); 1511c579ef51Seric } 1512c579ef51Seric /* 151325a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 151425a99e2eSeric ** 151525a99e2eSeric ** Parameters: 151625a99e2eSeric ** stat -- the status code from the mailer (high byte 151725a99e2eSeric ** only; core dumps must have been taken care of 151825a99e2eSeric ** already). 151981161401Seric ** m -- the mailer info for this mailer. 152081161401Seric ** mci -- the mailer connection info -- can be NULL if the 152181161401Seric ** response is given before the connection is made. 152281161401Seric ** e -- the current envelope. 152325a99e2eSeric ** 152425a99e2eSeric ** Returns: 1525db8841e9Seric ** none. 152625a99e2eSeric ** 152725a99e2eSeric ** Side Effects: 1528c1f9df2cSeric ** Errors may be incremented. 152925a99e2eSeric ** ExitStat may be set. 153025a99e2eSeric */ 153125a99e2eSeric 153281161401Seric giveresponse(stat, m, mci, e) 153325a99e2eSeric int stat; 1534588cad61Seric register MAILER *m; 153581161401Seric register MCI *mci; 1536198d9be0Seric ENVELOPE *e; 153725a99e2eSeric { 15389c16475dSeric register const char *statmsg; 153925a99e2eSeric extern char *SysExMsg[]; 154025a99e2eSeric register int i; 1541d4bd8f0eSbostic extern int N_SysEx; 1542198d9be0Seric char buf[MAXLINE]; 154325a99e2eSeric 154413bbc08cSeric /* 154513bbc08cSeric ** Compute status message from code. 154613bbc08cSeric */ 154713bbc08cSeric 154825a99e2eSeric i = stat - EX__BASE; 1549588cad61Seric if (stat == 0) 15506fe8c3bcSeric { 1551588cad61Seric statmsg = "250 Sent"; 1552ce5531bdSeric if (e->e_statmsg != NULL) 15536fe8c3bcSeric { 1554ce5531bdSeric (void) sprintf(buf, "%s (%s)", statmsg, e->e_statmsg); 15556fe8c3bcSeric statmsg = buf; 15566fe8c3bcSeric } 15576fe8c3bcSeric } 1558588cad61Seric else if (i < 0 || i > N_SysEx) 1559588cad61Seric { 1560588cad61Seric (void) sprintf(buf, "554 unknown mailer error %d", stat); 1561588cad61Seric stat = EX_UNAVAILABLE; 1562588cad61Seric statmsg = buf; 1563588cad61Seric } 1564198d9be0Seric else if (stat == EX_TEMPFAIL) 1565198d9be0Seric { 15667d55540cSeric (void) strcpy(buf, SysExMsg[i] + 1); 1567d4bd8f0eSbostic #ifdef NAMED_BIND 1568f28da541Smiriam if (h_errno == TRY_AGAIN) 15694d50702aSeric statmsg = errstring(h_errno+E_DNSBASE); 1570f28da541Smiriam else 1571d4bd8f0eSbostic #endif 1572f28da541Smiriam { 15738557d168Seric if (errno != 0) 1574d87e85f3Seric statmsg = errstring(errno); 1575d87e85f3Seric else 1576d87e85f3Seric { 1577d87e85f3Seric #ifdef SMTP 1578d87e85f3Seric extern char SmtpError[]; 1579d87e85f3Seric 1580d87e85f3Seric statmsg = SmtpError; 15816c2c3107Seric #else /* SMTP */ 1582d87e85f3Seric statmsg = NULL; 15836c2c3107Seric #endif /* SMTP */ 1584d87e85f3Seric } 1585f28da541Smiriam } 1586d87e85f3Seric if (statmsg != NULL && statmsg[0] != '\0') 1587d87e85f3Seric { 158887c9b3e7Seric (void) strcat(buf, ": "); 1589d87e85f3Seric (void) strcat(buf, statmsg); 15908557d168Seric } 1591198d9be0Seric statmsg = buf; 1592198d9be0Seric } 1593f170942cSeric #ifdef NAMED_BIND 1594f170942cSeric else if (stat == EX_NOHOST && h_errno != 0) 1595f170942cSeric { 15964d50702aSeric statmsg = errstring(h_errno + E_DNSBASE); 1597f170942cSeric (void) sprintf(buf, "%s (%s)", SysExMsg[i], statmsg); 1598f170942cSeric statmsg = buf; 1599f170942cSeric } 1600f170942cSeric #endif 160125a99e2eSeric else 1602d87e85f3Seric { 160325a99e2eSeric statmsg = SysExMsg[i]; 16047d55540cSeric if (*statmsg++ == ':') 16057d55540cSeric { 16067d55540cSeric (void) sprintf(buf, "%s: %s", statmsg, errstring(errno)); 16077d55540cSeric statmsg = buf; 16087d55540cSeric } 1609d87e85f3Seric } 1610588cad61Seric 1611588cad61Seric /* 1612588cad61Seric ** Print the message as appropriate 1613588cad61Seric */ 1614588cad61Seric 1615198d9be0Seric if (stat == EX_OK || stat == EX_TEMPFAIL) 1616e12d03eeSeric message(&statmsg[4], errstring(errno)); 161725a99e2eSeric else 161825a99e2eSeric { 1619c1f9df2cSeric Errors++; 1620e12d03eeSeric usrerr(statmsg, errstring(errno)); 162125a99e2eSeric } 162225a99e2eSeric 162325a99e2eSeric /* 162425a99e2eSeric ** Final cleanup. 162525a99e2eSeric ** Log a record of the transaction. Compute the new 162625a99e2eSeric ** ExitStat -- if we already had an error, stick with 162725a99e2eSeric ** that. 162825a99e2eSeric */ 162925a99e2eSeric 16302f624c86Seric if (LogLevel > ((stat == EX_TEMPFAIL) ? 8 : (stat == EX_OK) ? 7 : 6)) 163181161401Seric logdelivery(m, mci, &statmsg[4], e); 1632eb238f8cSeric 1633eb238f8cSeric if (stat != EX_TEMPFAIL) 1634eb238f8cSeric setstat(stat); 1635198d9be0Seric if (stat != EX_OK) 1636198d9be0Seric { 1637198d9be0Seric if (e->e_message != NULL) 1638198d9be0Seric free(e->e_message); 1639198d9be0Seric e->e_message = newstr(&statmsg[4]); 1640198d9be0Seric } 16418557d168Seric errno = 0; 1642d4bd8f0eSbostic #ifdef NAMED_BIND 1643f28da541Smiriam h_errno = 0; 1644d4bd8f0eSbostic #endif 1645eb238f8cSeric } 1646eb238f8cSeric /* 1647eb238f8cSeric ** LOGDELIVERY -- log the delivery in the system log 1648eb238f8cSeric ** 1649eb238f8cSeric ** Parameters: 165081161401Seric ** m -- the mailer info. Can be NULL for initial queue. 165181161401Seric ** mci -- the mailer connection info -- can be NULL if the 165281161401Seric ** log is occuring when no connection is active. 165381161401Seric ** stat -- the message to print for the status. 165481161401Seric ** e -- the current envelope. 1655eb238f8cSeric ** 1656eb238f8cSeric ** Returns: 1657eb238f8cSeric ** none 1658eb238f8cSeric ** 1659eb238f8cSeric ** Side Effects: 1660eb238f8cSeric ** none 1661eb238f8cSeric */ 1662eb238f8cSeric 166381161401Seric logdelivery(m, mci, stat, e) 166481161401Seric MAILER *m; 166581161401Seric register MCI *mci; 1666eb238f8cSeric char *stat; 1667b31e7f2bSeric register ENVELOPE *e; 16685cf56be3Seric { 1669eb238f8cSeric # ifdef LOG 1670d6acf3eeSeric char buf[512]; 16719507d1f9Seric 167248ed5d33Seric (void) sprintf(buf, "delay=%s", pintvl(curtime() - e->e_ctime, TRUE)); 167381161401Seric 167448ed5d33Seric if (m != NULL) 167571ff6caaSeric { 167648ed5d33Seric (void) strcat(buf, ", mailer="); 167748ed5d33Seric (void) strcat(buf, m->m_name); 167871ff6caaSeric } 167948ed5d33Seric 168048ed5d33Seric if (mci != NULL && mci->mci_host != NULL) 168171ff6caaSeric { 168271ff6caaSeric # ifdef DAEMON 1683e2f2f828Seric extern SOCKADDR CurHostAddr; 168448ed5d33Seric # endif 168571ff6caaSeric 168648ed5d33Seric (void) strcat(buf, ", relay="); 168748ed5d33Seric (void) strcat(buf, mci->mci_host); 168848ed5d33Seric 168948ed5d33Seric # ifdef DAEMON 169048ed5d33Seric (void) strcat(buf, " ("); 1691e2f2f828Seric (void) strcat(buf, anynet_ntoa(&CurHostAddr)); 169248ed5d33Seric (void) strcat(buf, ")"); 169371ff6caaSeric # endif 169471ff6caaSeric } 16959507d1f9Seric else 169648ed5d33Seric { 169748ed5d33Seric char *p = macvalue('h', e); 16989507d1f9Seric 169948ed5d33Seric if (p != NULL && p[0] != '\0') 170048ed5d33Seric { 170148ed5d33Seric (void) strcat(buf, ", relay="); 170248ed5d33Seric (void) strcat(buf, p); 170348ed5d33Seric } 170448ed5d33Seric } 1705d6acf3eeSeric 1706d6acf3eeSeric syslog(LOG_INFO, "%s: to=%s, %s, stat=%s", 1707d6acf3eeSeric e->e_id, e->e_to, buf, stat); 17086c2c3107Seric # endif /* LOG */ 170925a99e2eSeric } 171025a99e2eSeric /* 171151552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 171225a99e2eSeric ** 171351552439Seric ** This can be made an arbitrary message separator by changing $l 171451552439Seric ** 17159b6c17a6Seric ** One of the ugliest hacks seen by human eyes is contained herein: 17169b6c17a6Seric ** UUCP wants those stupid "remote from <host>" lines. Why oh why 17179b6c17a6Seric ** does a well-meaning programmer such as myself have to deal with 17189b6c17a6Seric ** this kind of antique garbage???? 171925a99e2eSeric ** 172025a99e2eSeric ** Parameters: 172151552439Seric ** fp -- the file to output to. 172251552439Seric ** m -- the mailer describing this entry. 172325a99e2eSeric ** 172425a99e2eSeric ** Returns: 172551552439Seric ** none 172625a99e2eSeric ** 172725a99e2eSeric ** Side Effects: 172851552439Seric ** outputs some text to fp. 172925a99e2eSeric */ 173025a99e2eSeric 1731b31e7f2bSeric putfromline(fp, m, e) 173251552439Seric register FILE *fp; 173351552439Seric register MAILER *m; 1734b31e7f2bSeric ENVELOPE *e; 173525a99e2eSeric { 17362bc47524Seric char *template = "\201l\n"; 173751552439Seric char buf[MAXLINE]; 173825a99e2eSeric 173957fc6f17Seric if (bitnset(M_NHDR, m->m_flags)) 174051552439Seric return; 174113bbc08cSeric 17422c7e1b8dSeric # ifdef UGLYUUCP 174357fc6f17Seric if (bitnset(M_UGLYUUCP, m->m_flags)) 174474b6e67bSeric { 1745ea09d6edSeric char *bang; 1746ea09d6edSeric char xbuf[MAXLINE]; 174774b6e67bSeric 1748ee4b0922Seric expand("\201g", buf, &buf[sizeof buf - 1], e); 17496c2c3107Seric bang = strchr(buf, '!'); 175074b6e67bSeric if (bang == NULL) 175134fcca25Seric { 175234fcca25Seric errno = 0; 175334fcca25Seric syserr("554 No ! in UUCP From address! (%s given)", buf); 175434fcca25Seric } 175574b6e67bSeric else 1756588cad61Seric { 1757ea09d6edSeric *bang++ = '\0'; 17582bc47524Seric (void) sprintf(xbuf, "From %s \201d remote from %s\n", bang, buf); 1759ea09d6edSeric template = xbuf; 176074b6e67bSeric } 1761588cad61Seric } 17626c2c3107Seric # endif /* UGLYUUCP */ 1763b31e7f2bSeric expand(template, buf, &buf[sizeof buf - 1], e); 176477b52738Seric putline(buf, fp, m); 1765bc6e2962Seric } 1766bc6e2962Seric /* 176751552439Seric ** PUTBODY -- put the body of a message. 176851552439Seric ** 176951552439Seric ** Parameters: 177051552439Seric ** fp -- file to output onto. 177177b52738Seric ** m -- a mailer descriptor to control output format. 17729a6a5f55Seric ** e -- the envelope to put out. 177303c02fdeSeric ** separator -- if non-NULL, a message separator that must 177403c02fdeSeric ** not be permitted in the resulting message. 177551552439Seric ** 177651552439Seric ** Returns: 177751552439Seric ** none. 177851552439Seric ** 177951552439Seric ** Side Effects: 178051552439Seric ** The message is written onto fp. 178151552439Seric */ 178251552439Seric 178303c02fdeSeric putbody(fp, m, e, separator) 178451552439Seric FILE *fp; 1785588cad61Seric MAILER *m; 17869a6a5f55Seric register ENVELOPE *e; 178703c02fdeSeric char *separator; 178851552439Seric { 178977b52738Seric char buf[MAXLINE]; 179051552439Seric 179151552439Seric /* 179251552439Seric ** Output the body of the message 179351552439Seric */ 179451552439Seric 17959a6a5f55Seric if (e->e_dfp == NULL) 179651552439Seric { 17979a6a5f55Seric if (e->e_df != NULL) 17989a6a5f55Seric { 17999a6a5f55Seric e->e_dfp = fopen(e->e_df, "r"); 18009a6a5f55Seric if (e->e_dfp == NULL) 18018f9146b0Srick syserr("putbody: Cannot open %s for %s from %s", 1802e76a6a8fSeric e->e_df, e->e_to, e->e_from.q_paddr); 18039a6a5f55Seric } 18049a6a5f55Seric else 180577b52738Seric putline("<<< No Message Collected >>>", fp, m); 18069a6a5f55Seric } 18079a6a5f55Seric if (e->e_dfp != NULL) 18089a6a5f55Seric { 18099a6a5f55Seric rewind(e->e_dfp); 181077b52738Seric while (!ferror(fp) && fgets(buf, sizeof buf, e->e_dfp) != NULL) 181124fc8aeeSeric { 181224fc8aeeSeric if (buf[0] == 'F' && bitnset(M_ESCFROM, m->m_flags) && 1813d6fa2b58Sbostic strncmp(buf, "From ", 5) == 0) 18143462ad9eSeric (void) putc('>', fp); 181503c02fdeSeric if (buf[0] == '-' && buf[1] == '-' && separator != NULL) 181603c02fdeSeric { 181703c02fdeSeric /* possible separator */ 181803c02fdeSeric int sl = strlen(separator); 181903c02fdeSeric 182003c02fdeSeric if (strncmp(&buf[2], separator, sl) == 0) 182103c02fdeSeric (void) putc(' ', fp); 182203c02fdeSeric } 182377b52738Seric putline(buf, fp, m); 182424fc8aeeSeric } 182551552439Seric 18269a6a5f55Seric if (ferror(e->e_dfp)) 182751552439Seric { 182851552439Seric syserr("putbody: read error"); 182951552439Seric ExitStat = EX_IOERR; 183051552439Seric } 183151552439Seric } 183251552439Seric 18330890ba1fSeric /* some mailers want extra blank line at end of message */ 18340890ba1fSeric if (bitnset(M_BLANKEND, m->m_flags) && buf[0] != '\0' && buf[0] != '\n') 18350890ba1fSeric putline("", fp, m); 18360890ba1fSeric 183751552439Seric (void) fflush(fp); 183851552439Seric if (ferror(fp) && errno != EPIPE) 183951552439Seric { 184051552439Seric syserr("putbody: write error"); 184151552439Seric ExitStat = EX_IOERR; 184251552439Seric } 184351552439Seric errno = 0; 184425a99e2eSeric } 184525a99e2eSeric /* 184625a99e2eSeric ** MAILFILE -- Send a message to a file. 184725a99e2eSeric ** 1848f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1849f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1850f129ec7dSeric ** rather than the real user. Obviously, this only works if 1851f129ec7dSeric ** sendmail runs as root. 1852f129ec7dSeric ** 1853588cad61Seric ** This could be done as a subordinate mailer, except that it 1854588cad61Seric ** is used implicitly to save messages in ~/dead.letter. We 1855588cad61Seric ** view this as being sufficiently important as to include it 1856588cad61Seric ** here. For example, if the system is dying, we shouldn't have 1857588cad61Seric ** to create another process plus some pipes to save the message. 1858588cad61Seric ** 185925a99e2eSeric ** Parameters: 186025a99e2eSeric ** filename -- the name of the file to send to. 18616259796dSeric ** ctladdr -- the controlling address header -- includes 18626259796dSeric ** the userid/groupid to be when sending. 186325a99e2eSeric ** 186425a99e2eSeric ** Returns: 186525a99e2eSeric ** The exit code associated with the operation. 186625a99e2eSeric ** 186725a99e2eSeric ** Side Effects: 186825a99e2eSeric ** none. 186925a99e2eSeric */ 187025a99e2eSeric 1871b31e7f2bSeric mailfile(filename, ctladdr, e) 187225a99e2eSeric char *filename; 18736259796dSeric ADDRESS *ctladdr; 1874b31e7f2bSeric register ENVELOPE *e; 187525a99e2eSeric { 187625a99e2eSeric register FILE *f; 187732d19d43Seric register int pid; 187815d084d5Seric int mode; 187925a99e2eSeric 1880671745f3Seric if (tTd(11, 1)) 1881671745f3Seric { 1882671745f3Seric printf("mailfile %s\n ctladdr=", filename); 1883671745f3Seric printaddr(ctladdr, FALSE); 1884671745f3Seric } 1885671745f3Seric 1886f170942cSeric if (e->e_xfp != NULL) 1887f170942cSeric fflush(e->e_xfp); 1888f170942cSeric 188932d19d43Seric /* 189032d19d43Seric ** Fork so we can change permissions here. 189132d19d43Seric ** Note that we MUST use fork, not vfork, because of 189232d19d43Seric ** the complications of calling subroutines, etc. 189332d19d43Seric */ 189432d19d43Seric 189532d19d43Seric DOFORK(fork); 189632d19d43Seric 189732d19d43Seric if (pid < 0) 189832d19d43Seric return (EX_OSERR); 189932d19d43Seric else if (pid == 0) 190032d19d43Seric { 190132d19d43Seric /* child -- actually write to file */ 1902f129ec7dSeric struct stat stb; 1903f129ec7dSeric 19042b9178d3Seric (void) setsignal(SIGINT, SIG_DFL); 19052b9178d3Seric (void) setsignal(SIGHUP, SIG_DFL); 19062b9178d3Seric (void) setsignal(SIGTERM, SIG_DFL); 19073462ad9eSeric (void) umask(OldUmask); 190895f16dc0Seric 1909f129ec7dSeric if (stat(filename, &stb) < 0) 19103a98e7eaSeric stb.st_mode = FileMode; 191115d084d5Seric mode = stb.st_mode; 191295f16dc0Seric 191395f16dc0Seric /* limit the errors to those actually caused in the child */ 191495f16dc0Seric errno = 0; 191595f16dc0Seric ExitStat = EX_OK; 191695f16dc0Seric 1917f129ec7dSeric if (bitset(0111, stb.st_mode)) 1918f129ec7dSeric exit(EX_CANTCREAT); 191903827b5fSeric if (ctladdr == NULL) 19208f9146b0Srick ctladdr = &e->e_from; 192115d084d5Seric else 192215d084d5Seric { 192315d084d5Seric /* ignore setuid and setgid bits */ 192415d084d5Seric mode &= ~(S_ISGID|S_ISUID); 192515d084d5Seric } 192615d084d5Seric 19278f9146b0Srick /* we have to open the dfile BEFORE setuid */ 19288f9146b0Srick if (e->e_dfp == NULL && e->e_df != NULL) 19298f9146b0Srick { 19308f9146b0Srick e->e_dfp = fopen(e->e_df, "r"); 193195f16dc0Seric if (e->e_dfp == NULL) 193295f16dc0Seric { 19338f9146b0Srick syserr("mailfile: Cannot open %s for %s from %s", 1934e76a6a8fSeric e->e_df, e->e_to, e->e_from.q_paddr); 19358f9146b0Srick } 19368f9146b0Srick } 19378f9146b0Srick 193815d084d5Seric if (!bitset(S_ISGID, mode) || setgid(stb.st_gid) < 0) 1939e36b99e2Seric { 194095f16dc0Seric if (ctladdr->q_uid == 0) 194195f16dc0Seric { 1942898a126bSbostic (void) initgroups(DefUser, DefGid); 194395f16dc0Seric } 194495f16dc0Seric else 194595f16dc0Seric { 1946898a126bSbostic (void) initgroups(ctladdr->q_ruser ? 1947898a126bSbostic ctladdr->q_ruser : ctladdr->q_user, 1948898a126bSbostic ctladdr->q_gid); 1949898a126bSbostic } 1950e36b99e2Seric } 195115d084d5Seric if (!bitset(S_ISUID, mode) || setuid(stb.st_uid) < 0) 1952e36b99e2Seric { 1953e36b99e2Seric if (ctladdr->q_uid == 0) 1954e36b99e2Seric (void) setuid(DefUid); 1955e36b99e2Seric else 19566259796dSeric (void) setuid(ctladdr->q_uid); 1957e36b99e2Seric } 195895f16dc0Seric FileName = filename; 195995f16dc0Seric LineNumber = 0; 19603a98e7eaSeric f = dfopen(filename, O_WRONLY|O_CREAT|O_APPEND, FileMode); 196125a99e2eSeric if (f == NULL) 196295f16dc0Seric { 1963b6a0de9dSeric message("554 cannot open: %s", errstring(errno)); 196432d19d43Seric exit(EX_CANTCREAT); 196595f16dc0Seric } 196625a99e2eSeric 19670331ce05Seric putfromline(f, FileMailer, e); 19680331ce05Seric (*e->e_puthdr)(f, FileMailer, e); 19690331ce05Seric putline("\n", f, FileMailer); 197003c02fdeSeric (*e->e_putbody)(f, FileMailer, e, NULL); 19710331ce05Seric putline("\n", f, FileMailer); 197295f16dc0Seric if (ferror(f)) 197395f16dc0Seric { 1974b6a0de9dSeric message("451 I/O error: %s", errstring(errno)); 197595f16dc0Seric setstat(EX_IOERR); 197695f16dc0Seric } 1977ee4b0922Seric (void) xfclose(f, "mailfile", filename); 197832d19d43Seric (void) fflush(stdout); 1979e36b99e2Seric 198027628d59Seric /* reset ISUID & ISGID bits for paranoid systems */ 1981c77d1c25Seric (void) chmod(filename, (int) stb.st_mode); 198295f16dc0Seric exit(ExitStat); 198313bbc08cSeric /*NOTREACHED*/ 198432d19d43Seric } 198532d19d43Seric else 198632d19d43Seric { 198732d19d43Seric /* parent -- wait for exit status */ 1988588cad61Seric int st; 198932d19d43Seric 1990588cad61Seric st = waitfor(pid); 1991bf9bc890Seric if (WIFEXITED(st)) 1992bf9bc890Seric return (WEXITSTATUS(st)); 1993588cad61Seric else 1994b6a0de9dSeric { 1995b6a0de9dSeric syserr("child died on signal %d", st); 1996bf9bc890Seric return (EX_UNAVAILABLE); 1997b6a0de9dSeric } 19988f9146b0Srick /*NOTREACHED*/ 199932d19d43Seric } 200025a99e2eSeric } 2001ea4dc939Seric /* 2002e103b48fSeric ** HOSTSIGNATURE -- return the "signature" for a host. 2003e103b48fSeric ** 2004e103b48fSeric ** The signature describes how we are going to send this -- it 2005e103b48fSeric ** can be just the hostname (for non-Internet hosts) or can be 2006e103b48fSeric ** an ordered list of MX hosts. 2007e103b48fSeric ** 2008e103b48fSeric ** Parameters: 2009e103b48fSeric ** m -- the mailer describing this host. 2010e103b48fSeric ** host -- the host name. 2011e103b48fSeric ** e -- the current envelope. 2012e103b48fSeric ** 2013e103b48fSeric ** Returns: 2014e103b48fSeric ** The signature for this host. 2015e103b48fSeric ** 2016e103b48fSeric ** Side Effects: 2017e103b48fSeric ** Can tweak the symbol table. 2018e103b48fSeric */ 2019e103b48fSeric 2020e103b48fSeric char * 2021e103b48fSeric hostsignature(m, host, e) 2022e103b48fSeric register MAILER *m; 2023e103b48fSeric char *host; 2024e103b48fSeric ENVELOPE *e; 2025e103b48fSeric { 2026e103b48fSeric register char *p; 2027e103b48fSeric register STAB *s; 2028e103b48fSeric int i; 2029e103b48fSeric int len; 2030e103b48fSeric #ifdef NAMED_BIND 2031e103b48fSeric int nmx; 2032e103b48fSeric auto int rcode; 2033bafdc4e5Seric char *hp; 2034bafdc4e5Seric char *endp; 2035516782b4Seric int oldoptions; 2036e103b48fSeric char *mxhosts[MAXMXHOSTS + 1]; 2037e103b48fSeric #endif 2038e103b48fSeric 2039e103b48fSeric /* 2040e103b48fSeric ** Check to see if this uses IPC -- if not, it can't have MX records. 2041e103b48fSeric */ 2042e103b48fSeric 2043e103b48fSeric p = m->m_mailer; 2044e103b48fSeric if (strcmp(p, "[IPC]") != 0 && strcmp(p, "[TCP]") != 0) 2045e103b48fSeric { 2046e103b48fSeric /* just an ordinary mailer */ 2047e103b48fSeric return host; 2048e103b48fSeric } 2049e103b48fSeric 2050e103b48fSeric /* 2051e103b48fSeric ** Look it up in the symbol table. 2052e103b48fSeric */ 2053e103b48fSeric 2054e103b48fSeric s = stab(host, ST_HOSTSIG, ST_ENTER); 2055e103b48fSeric if (s->s_hostsig != NULL) 2056e103b48fSeric return s->s_hostsig; 2057e103b48fSeric 2058e103b48fSeric /* 2059e103b48fSeric ** Not already there -- create a signature. 2060e103b48fSeric */ 2061e103b48fSeric 2062e103b48fSeric #ifdef NAMED_BIND 2063516782b4Seric if (ConfigLevel < 2) 2064516782b4Seric { 2065516782b4Seric oldoptions = _res.options; 2066516782b4Seric _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 2067516782b4Seric } 2068516782b4Seric 2069bafdc4e5Seric for (hp = host; hp != NULL; hp = endp) 2070bafdc4e5Seric { 2071bafdc4e5Seric endp = strchr(hp, ':'); 2072bafdc4e5Seric if (endp != NULL) 2073bafdc4e5Seric *endp = '\0'; 2074bafdc4e5Seric 20757bf809e6Seric nmx = getmxrr(hp, mxhosts, TRUE, &rcode); 20767d55540cSeric 2077e103b48fSeric if (nmx <= 0) 2078e103b48fSeric { 2079e103b48fSeric register MCI *mci; 2080e103b48fSeric extern int errno; 2081e103b48fSeric 2082e103b48fSeric /* update the connection info for this host */ 2083bafdc4e5Seric mci = mci_get(hp, m); 2084e103b48fSeric mci->mci_exitstat = rcode; 2085e103b48fSeric mci->mci_errno = errno; 2086f170942cSeric #ifdef NAMED_BIND 2087f170942cSeric mci->mci_herrno = h_errno; 2088f170942cSeric #endif 2089e103b48fSeric 2090e103b48fSeric /* and return the original host name as the signature */ 2091bafdc4e5Seric nmx = 1; 2092bafdc4e5Seric mxhosts[0] = hp; 2093e103b48fSeric } 2094e103b48fSeric 2095e103b48fSeric len = 0; 2096e103b48fSeric for (i = 0; i < nmx; i++) 2097e103b48fSeric { 2098e103b48fSeric len += strlen(mxhosts[i]) + 1; 2099e103b48fSeric } 2100bafdc4e5Seric if (s->s_hostsig != NULL) 2101bafdc4e5Seric len += strlen(s->s_hostsig) + 1; 2102bafdc4e5Seric p = xalloc(len); 2103bafdc4e5Seric if (s->s_hostsig != NULL) 2104bafdc4e5Seric { 2105bafdc4e5Seric (void) strcpy(p, s->s_hostsig); 2106bafdc4e5Seric free(s->s_hostsig); 2107bafdc4e5Seric s->s_hostsig = p; 2108bafdc4e5Seric p += strlen(p); 2109bafdc4e5Seric *p++ = ':'; 2110bafdc4e5Seric } 2111bafdc4e5Seric else 2112bafdc4e5Seric s->s_hostsig = p; 2113e103b48fSeric for (i = 0; i < nmx; i++) 2114e103b48fSeric { 2115e103b48fSeric if (i != 0) 2116e103b48fSeric *p++ = ':'; 2117e103b48fSeric strcpy(p, mxhosts[i]); 2118e103b48fSeric p += strlen(p); 2119e103b48fSeric } 2120bafdc4e5Seric if (endp != NULL) 2121bafdc4e5Seric *endp++ = ':'; 2122bafdc4e5Seric } 2123e103b48fSeric makelower(s->s_hostsig); 2124516782b4Seric if (ConfigLevel < 2) 2125516782b4Seric _res.options = oldoptions; 2126e103b48fSeric #else 2127e103b48fSeric /* not using BIND -- the signature is just the host name */ 2128e103b48fSeric s->s_hostsig = host; 2129e103b48fSeric #endif 2130e103b48fSeric if (tTd(17, 1)) 2131e103b48fSeric printf("hostsignature(%s) = %s\n", host, s->s_hostsig); 2132e103b48fSeric return s->s_hostsig; 2133e103b48fSeric } 2134