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*7febfd66Seric static char sccsid[] = "@(#)deliver.c 8.21 (Berkeley) 09/04/93"; 11e70a7521Sbostic #endif /* not lint */ 124227346bSdist 13fcde9cc8Sbostic #include "sendmail.h" 14f28da541Smiriam #include <netdb.h> 15911693bfSbostic #include <errno.h> 16bf9bc890Seric #include <sys/wait.h> 17134746fbSeric #ifdef NAMED_BIND 18912a731aSbostic #include <arpa/nameser.h> 19912a731aSbostic #include <resolv.h> 20f170942cSeric 21f170942cSeric extern int h_errno; 22134746fbSeric #endif 2325a99e2eSeric 24bf9bc890Seric #ifndef WEXITSTATUS 25bf9bc890Seric # define WEXITSTATUS(st) (((st) >> 8) & 0377) 26bf9bc890Seric #endif 27bf9bc890Seric 2825a99e2eSeric /* 299c9e68d9Seric ** SENDALL -- actually send all the messages. 309c9e68d9Seric ** 319c9e68d9Seric ** Parameters: 329c9e68d9Seric ** e -- the envelope to send. 339c9e68d9Seric ** mode -- the delivery mode to use. If SM_DEFAULT, use 349c9e68d9Seric ** the current e->e_sendmode. 359c9e68d9Seric ** 369c9e68d9Seric ** Returns: 379c9e68d9Seric ** none. 389c9e68d9Seric ** 399c9e68d9Seric ** Side Effects: 409c9e68d9Seric ** Scans the send lists and sends everything it finds. 419c9e68d9Seric ** Delivers any appropriate error messages. 429c9e68d9Seric ** If we are running in a non-interactive mode, takes the 439c9e68d9Seric ** appropriate action. 449c9e68d9Seric */ 459c9e68d9Seric 469c9e68d9Seric sendall(e, mode) 479c9e68d9Seric ENVELOPE *e; 489c9e68d9Seric char mode; 499c9e68d9Seric { 509c9e68d9Seric register ADDRESS *q; 519c9e68d9Seric char *owner; 529c9e68d9Seric int otherowners; 539c9e68d9Seric register ENVELOPE *ee; 549c9e68d9Seric ENVELOPE *splitenv = NULL; 556103d9b4Seric bool announcequeueup; 569c9e68d9Seric 577880f3e4Seric /* 587880f3e4Seric ** If we have had global, fatal errors, don't bother sending 597880f3e4Seric ** the message at all if we are in SMTP mode. Local errors 607880f3e4Seric ** (e.g., a single address failing) will still cause the other 617880f3e4Seric ** addresses to be sent. 627880f3e4Seric */ 637880f3e4Seric 647880f3e4Seric if (bitset(EF_FATALERRS, e->e_flags) && OpMode == MD_SMTP) 65896b16f6Seric { 66896b16f6Seric e->e_flags |= EF_CLRQUEUE; 67896b16f6Seric return; 68896b16f6Seric } 69896b16f6Seric 709c9e68d9Seric /* determine actual delivery mode */ 719c9e68d9Seric if (mode == SM_DEFAULT) 729c9e68d9Seric { 739c9e68d9Seric mode = e->e_sendmode; 749c9e68d9Seric if (mode != SM_VERIFY && 759c9e68d9Seric shouldqueue(e->e_msgpriority, e->e_ctime)) 769c9e68d9Seric mode = SM_QUEUE; 776103d9b4Seric announcequeueup = mode == SM_QUEUE; 789c9e68d9Seric } 796103d9b4Seric else 806103d9b4Seric announcequeueup = FALSE; 819c9e68d9Seric 829c9e68d9Seric if (tTd(13, 1)) 839c9e68d9Seric { 840e484fe5Seric printf("\n===== SENDALL: mode %c, id %s, e_from ", 850e484fe5Seric mode, e->e_id); 869c9e68d9Seric printaddr(&e->e_from, FALSE); 879c9e68d9Seric printf("sendqueue:\n"); 889c9e68d9Seric printaddr(e->e_sendqueue, TRUE); 899c9e68d9Seric } 909c9e68d9Seric 919c9e68d9Seric /* 929c9e68d9Seric ** Do any preprocessing necessary for the mode we are running. 939c9e68d9Seric ** Check to make sure the hop count is reasonable. 949c9e68d9Seric ** Delete sends to the sender in mailing lists. 959c9e68d9Seric */ 969c9e68d9Seric 979c9e68d9Seric CurEnv = e; 989c9e68d9Seric 999c9e68d9Seric if (e->e_hopcount > MaxHopCount) 1009c9e68d9Seric { 1019c9e68d9Seric errno = 0; 1029c9e68d9Seric syserr("554 too many hops %d (%d max): from %s, to %s", 1039c9e68d9Seric e->e_hopcount, MaxHopCount, e->e_from.q_paddr, 1049c9e68d9Seric e->e_sendqueue->q_paddr); 1059c9e68d9Seric return; 1069c9e68d9Seric } 1079c9e68d9Seric 108b8004690Seric /* 109b8004690Seric ** Do sender deletion. 110b8004690Seric ** 111b8004690Seric ** If the sender has the QQUEUEUP flag set, skip this. 112b8004690Seric ** This can happen if the name server is hosed when you 113b8004690Seric ** are trying to send mail. The result is that the sender 114b8004690Seric ** is instantiated in the queue as a recipient. 115b8004690Seric */ 116b8004690Seric 117e76a6a8fSeric if (!bitset(EF_METOO, e->e_flags) && 118e76a6a8fSeric !bitset(QQUEUEUP, e->e_from.q_flags)) 1199c9e68d9Seric { 1209c9e68d9Seric if (tTd(13, 5)) 1219c9e68d9Seric { 1229c9e68d9Seric printf("sendall: QDONTSEND "); 1239c9e68d9Seric printaddr(&e->e_from, FALSE); 1249c9e68d9Seric } 1259c9e68d9Seric e->e_from.q_flags |= QDONTSEND; 1269c9e68d9Seric (void) recipient(&e->e_from, &e->e_sendqueue, e); 1279c9e68d9Seric } 1289c9e68d9Seric 129ce5531bdSeric /* 130ce5531bdSeric ** Handle alias owners. 131ce5531bdSeric ** 132ce5531bdSeric ** We scan up the q_alias chain looking for owners. 133ce5531bdSeric ** We discard owners that are the same as the return path. 134ce5531bdSeric */ 135ce5531bdSeric 136ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 137ce5531bdSeric { 138ce5531bdSeric register struct address *a; 139ce5531bdSeric 140ce5531bdSeric for (a = q; a != NULL && a->q_owner == NULL; a = a->q_alias) 141ce5531bdSeric continue; 142ce5531bdSeric if (a != NULL) 143ce5531bdSeric q->q_owner = a->q_owner; 144ce5531bdSeric 145ce5531bdSeric if (q->q_owner != NULL && 146ce5531bdSeric !bitset(QDONTSEND, q->q_flags) && 147ce5531bdSeric strcmp(q->q_owner, e->e_from.q_paddr) == 0) 148ce5531bdSeric q->q_owner = NULL; 149ce5531bdSeric } 150ce5531bdSeric 151ce5531bdSeric owner = ""; 152ce5531bdSeric otherowners = 1; 153ce5531bdSeric while (owner != NULL && otherowners > 0) 154ce5531bdSeric { 155ce5531bdSeric owner = NULL; 156ce5531bdSeric otherowners = 0; 157ce5531bdSeric 158ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 159ce5531bdSeric { 160ce5531bdSeric if (bitset(QDONTSEND, q->q_flags)) 161ce5531bdSeric continue; 162ce5531bdSeric 163ce5531bdSeric if (q->q_owner != NULL) 164ce5531bdSeric { 165ce5531bdSeric if (owner == NULL) 166ce5531bdSeric owner = q->q_owner; 167ce5531bdSeric else if (owner != q->q_owner) 168ce5531bdSeric { 169ce5531bdSeric if (strcmp(owner, q->q_owner) == 0) 170ce5531bdSeric { 171ce5531bdSeric /* make future comparisons cheap */ 172ce5531bdSeric q->q_owner = owner; 173ce5531bdSeric } 174ce5531bdSeric else 175ce5531bdSeric { 176ce5531bdSeric otherowners++; 177ce5531bdSeric } 178ce5531bdSeric owner = q->q_owner; 179ce5531bdSeric } 180ce5531bdSeric } 181ce5531bdSeric else 182ce5531bdSeric { 183ce5531bdSeric otherowners++; 184ce5531bdSeric } 185ce5531bdSeric } 186ce5531bdSeric 187ce5531bdSeric if (owner != NULL && otherowners > 0) 188ce5531bdSeric { 189ce5531bdSeric extern HDR *copyheader(); 190ce5531bdSeric extern ADDRESS *copyqueue(); 191ce5531bdSeric 192ce5531bdSeric /* 193ce5531bdSeric ** Split this envelope into two. 194ce5531bdSeric */ 195ce5531bdSeric 196ce5531bdSeric ee = (ENVELOPE *) xalloc(sizeof(ENVELOPE)); 197ce5531bdSeric *ee = *e; 198ce5531bdSeric ee->e_id = NULL; 199ce5531bdSeric (void) queuename(ee, '\0'); 200ce5531bdSeric 201ce5531bdSeric if (tTd(13, 1)) 202ce5531bdSeric printf("sendall: split %s into %s\n", 203ce5531bdSeric e->e_id, ee->e_id); 204ce5531bdSeric 205ce5531bdSeric ee->e_header = copyheader(e->e_header); 206ce5531bdSeric ee->e_sendqueue = copyqueue(e->e_sendqueue); 207ce5531bdSeric ee->e_errorqueue = copyqueue(e->e_errorqueue); 208ce5531bdSeric ee->e_flags = e->e_flags & ~(EF_INQUEUE|EF_CLRQUEUE|EF_FATALERRS); 209ce5531bdSeric setsender(owner, ee, NULL, TRUE); 210ce5531bdSeric if (tTd(13, 5)) 211ce5531bdSeric { 212ce5531bdSeric printf("sendall(split): QDONTSEND "); 213ce5531bdSeric printaddr(&ee->e_from, FALSE); 214ce5531bdSeric } 215ce5531bdSeric ee->e_from.q_flags |= QDONTSEND; 216ce5531bdSeric ee->e_dfp = NULL; 217ce5531bdSeric ee->e_xfp = NULL; 218ce5531bdSeric ee->e_lockfp = NULL; 219ce5531bdSeric ee->e_df = NULL; 220ce5531bdSeric ee->e_errormode = EM_MAIL; 221ce5531bdSeric ee->e_sibling = splitenv; 222ce5531bdSeric splitenv = ee; 223ce5531bdSeric 224ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 225ce5531bdSeric if (q->q_owner == owner) 226ce5531bdSeric q->q_flags |= QDONTSEND; 227ce5531bdSeric for (q = ee->e_sendqueue; q != NULL; q = q->q_next) 228ce5531bdSeric if (q->q_owner != owner) 229ce5531bdSeric q->q_flags |= QDONTSEND; 230ce5531bdSeric 231ce5531bdSeric if (e->e_df != NULL && mode != SM_VERIFY) 232ce5531bdSeric { 233ce5531bdSeric ee->e_dfp = NULL; 234da662164Seric ee->e_df = queuename(ee, 'd'); 235da662164Seric ee->e_df = newstr(ee->e_df); 236ce5531bdSeric if (link(e->e_df, ee->e_df) < 0) 237ce5531bdSeric { 238ce5531bdSeric syserr("sendall: link(%s, %s)", 239ce5531bdSeric e->e_df, ee->e_df); 240ce5531bdSeric } 241ce5531bdSeric } 242ce5531bdSeric 243ce5531bdSeric if (mode != SM_VERIFY) 244ce5531bdSeric openxscript(ee); 245ce5531bdSeric #ifdef LOG 246ce5531bdSeric if (LogLevel > 4) 247ce5531bdSeric syslog(LOG_INFO, "%s: clone %s", 248ce5531bdSeric ee->e_id, e->e_id); 249ce5531bdSeric #endif 250ce5531bdSeric } 251ce5531bdSeric } 252ce5531bdSeric 253ce5531bdSeric if (owner != NULL) 254ce5531bdSeric { 255ce5531bdSeric setsender(owner, e, NULL, TRUE); 256ce5531bdSeric if (tTd(13, 5)) 257ce5531bdSeric { 258ce5531bdSeric printf("sendall(owner): QDONTSEND "); 259ce5531bdSeric printaddr(&e->e_from, FALSE); 260ce5531bdSeric } 261ce5531bdSeric e->e_from.q_flags |= QDONTSEND; 262ce5531bdSeric e->e_errormode = EM_MAIL; 263ce5531bdSeric } 264ce5531bdSeric 265c1ac89b1Seric # ifdef QUEUE 266c1ac89b1Seric if ((mode == SM_QUEUE || mode == SM_FORK || 267c1ac89b1Seric (mode != SM_VERIFY && SuperSafe)) && 268c1ac89b1Seric !bitset(EF_INQUEUE, e->e_flags)) 269c1ac89b1Seric { 270c1ac89b1Seric /* be sure everything is instantiated in the queue */ 2716103d9b4Seric queueup(e, TRUE, announcequeueup); 272ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 2736103d9b4Seric queueup(ee, TRUE, announcequeueup); 274c1ac89b1Seric } 275c1ac89b1Seric #endif /* QUEUE */ 276c1ac89b1Seric 277ce5531bdSeric if (splitenv != NULL) 278ce5531bdSeric { 279ce5531bdSeric if (tTd(13, 1)) 280ce5531bdSeric { 281ce5531bdSeric printf("\nsendall: Split queue; remaining queue:\n"); 282ce5531bdSeric printaddr(e->e_sendqueue, TRUE); 283ce5531bdSeric } 284ce5531bdSeric 285ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 286ce5531bdSeric { 287ce5531bdSeric CurEnv = ee; 288ce5531bdSeric sendenvelope(ee, mode); 289ce5531bdSeric } 290ce5531bdSeric 291ce5531bdSeric CurEnv = e; 292ce5531bdSeric } 293ce5531bdSeric sendenvelope(e, mode); 294ce5531bdSeric 295ce5531bdSeric for (; splitenv != NULL; splitenv = splitenv->e_sibling) 296ce5531bdSeric dropenvelope(splitenv); 297ce5531bdSeric } 298ce5531bdSeric 299ce5531bdSeric sendenvelope(e, mode) 300ce5531bdSeric register ENVELOPE *e; 301ce5531bdSeric char mode; 302ce5531bdSeric { 303ce5531bdSeric bool oldverbose; 304ce5531bdSeric int pid; 305ce5531bdSeric register ADDRESS *q; 3066b2765c6Seric char *qf; 3076b2765c6Seric char *id; 308ce5531bdSeric 3097880f3e4Seric /* 3107880f3e4Seric ** If we have had global, fatal errors, don't bother sending 3117880f3e4Seric ** the message at all if we are in SMTP mode. Local errors 3127880f3e4Seric ** (e.g., a single address failing) will still cause the other 3137880f3e4Seric ** addresses to be sent. 3147880f3e4Seric */ 3157880f3e4Seric 3167880f3e4Seric if (bitset(EF_FATALERRS, e->e_flags) && OpMode == MD_SMTP) 3177880f3e4Seric { 3187880f3e4Seric e->e_flags |= EF_CLRQUEUE; 3197880f3e4Seric return; 3207880f3e4Seric } 3217880f3e4Seric 322ce5531bdSeric oldverbose = Verbose; 323c1ac89b1Seric switch (mode) 324c1ac89b1Seric { 325c1ac89b1Seric case SM_VERIFY: 326c1ac89b1Seric Verbose = TRUE; 327c1ac89b1Seric break; 328c1ac89b1Seric 329c1ac89b1Seric case SM_QUEUE: 330c1ac89b1Seric queueonly: 331c1ac89b1Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 332c1ac89b1Seric return; 333c1ac89b1Seric 334c1ac89b1Seric case SM_FORK: 335c1ac89b1Seric if (e->e_xfp != NULL) 336c1ac89b1Seric (void) fflush(e->e_xfp); 337c1ac89b1Seric 3382b9178d3Seric # ifndef HASFLOCK 339c1ac89b1Seric /* 3406b2765c6Seric ** Since fcntl locking has the interesting semantic that 3416b2765c6Seric ** the lock is owned by a process, not by an open file 3426b2765c6Seric ** descriptor, we have to flush this to the queue, and 3436b2765c6Seric ** then restart from scratch in the child. 344c1ac89b1Seric */ 345c1ac89b1Seric 3466b2765c6Seric /* save id for future use */ 3476b2765c6Seric id = e->e_id; 3486b2765c6Seric 3496b2765c6Seric /* now drop the envelope in the parent */ 3506b2765c6Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 3516b2765c6Seric dropenvelope(e); 3526b2765c6Seric 3536b2765c6Seric /* and reacquire in the child */ 3546b2765c6Seric (void) dowork(id, TRUE, FALSE, e); 3556b2765c6Seric 3566b2765c6Seric return; 3576b2765c6Seric 3586b2765c6Seric # else /* HASFLOCK */ 359c1ac89b1Seric 360c1ac89b1Seric pid = fork(); 361c1ac89b1Seric if (pid < 0) 362c1ac89b1Seric { 363c1ac89b1Seric goto queueonly; 364c1ac89b1Seric } 365c1ac89b1Seric else if (pid > 0) 366c1ac89b1Seric { 3670e484fe5Seric /* be sure we leave the temp files to our child */ 3680e484fe5Seric /* can't call unlockqueue to avoid unlink of xfp */ 3690e484fe5Seric if (e->e_lockfp != NULL) 3700e484fe5Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 3710e484fe5Seric e->e_lockfp = NULL; 3720e484fe5Seric 3730e484fe5Seric /* close any random open files in the envelope */ 3740e484fe5Seric closexscript(e); 3750e484fe5Seric if (e->e_dfp != NULL) 3760e484fe5Seric (void) xfclose(e->e_dfp, "sendenvelope", e->e_df); 3770e484fe5Seric e->e_dfp = NULL; 3780e484fe5Seric e->e_id = e->e_df = NULL; 379c1ac89b1Seric return; 380c1ac89b1Seric } 381c1ac89b1Seric 382c1ac89b1Seric /* double fork to avoid zombies */ 383c1ac89b1Seric if (fork() > 0) 384c1ac89b1Seric exit(EX_OK); 385c1ac89b1Seric 386c1ac89b1Seric /* be sure we are immune from the terminal */ 3877880f3e4Seric disconnect(1, e); 388c1ac89b1Seric 389c1ac89b1Seric /* 390c1ac89b1Seric ** Close any cached connections. 391c1ac89b1Seric ** 392c1ac89b1Seric ** We don't send the QUIT protocol because the parent 393c1ac89b1Seric ** still knows about the connection. 394c1ac89b1Seric ** 395c1ac89b1Seric ** This should only happen when delivering an error 396c1ac89b1Seric ** message. 397c1ac89b1Seric */ 398c1ac89b1Seric 399c1ac89b1Seric mci_flush(FALSE, NULL); 400c1ac89b1Seric 4016b2765c6Seric # endif /* HASFLOCK */ 4026b2765c6Seric 403c1ac89b1Seric break; 404c1ac89b1Seric } 405c1ac89b1Seric 406c1ac89b1Seric /* 4079c9e68d9Seric ** Run through the list and send everything. 4085288e21aSeric ** 4095288e21aSeric ** Set EF_GLOBALERRS so that error messages during delivery 4105288e21aSeric ** result in returned mail. 4119c9e68d9Seric */ 4129c9e68d9Seric 4139c9e68d9Seric e->e_nsent = 0; 4145288e21aSeric e->e_flags |= EF_GLOBALERRS; 4159c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 4169c9e68d9Seric { 4179c9e68d9Seric if (mode == SM_VERIFY) 4189c9e68d9Seric { 4199c9e68d9Seric e->e_to = q->q_paddr; 4209c9e68d9Seric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4218dfca105Seric { 4228dfca105Seric message("deliverable: mailer %s, host %s, user %s", 4238dfca105Seric q->q_mailer->m_name, 4248dfca105Seric q->q_host, 4258dfca105Seric q->q_user); 4268dfca105Seric } 4279c9e68d9Seric } 4289c9e68d9Seric else if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4299c9e68d9Seric { 4309c9e68d9Seric # ifdef QUEUE 4319c9e68d9Seric /* 4329c9e68d9Seric ** Checkpoint the send list every few addresses 4339c9e68d9Seric */ 4349c9e68d9Seric 4359c9e68d9Seric if (e->e_nsent >= CheckpointInterval) 4369c9e68d9Seric { 4379c9e68d9Seric queueup(e, TRUE, FALSE); 4389c9e68d9Seric e->e_nsent = 0; 4399c9e68d9Seric } 4409c9e68d9Seric # endif /* QUEUE */ 4419c9e68d9Seric (void) deliver(e, q); 4429c9e68d9Seric } 4439c9e68d9Seric } 4449c9e68d9Seric Verbose = oldverbose; 4459c9e68d9Seric 4469c9e68d9Seric if (mode == SM_FORK) 4479c9e68d9Seric finis(); 4489c9e68d9Seric } 4499c9e68d9Seric /* 4509c9e68d9Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 4519c9e68d9Seric ** 4529c9e68d9Seric ** This MUST be a macro, since after a vfork we are running 4539c9e68d9Seric ** two processes on the same stack!!! 4549c9e68d9Seric ** 4559c9e68d9Seric ** Parameters: 4569c9e68d9Seric ** none. 4579c9e68d9Seric ** 4589c9e68d9Seric ** Returns: 4599c9e68d9Seric ** From a macro??? You've got to be kidding! 4609c9e68d9Seric ** 4619c9e68d9Seric ** Side Effects: 4629c9e68d9Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 4639c9e68d9Seric ** pid of child in parent, zero in child. 4649c9e68d9Seric ** -1 on unrecoverable error. 4659c9e68d9Seric ** 4669c9e68d9Seric ** Notes: 4679c9e68d9Seric ** I'm awfully sorry this looks so awful. That's 4689c9e68d9Seric ** vfork for you..... 4699c9e68d9Seric */ 4709c9e68d9Seric 4719c9e68d9Seric # define NFORKTRIES 5 4729c9e68d9Seric 4739c9e68d9Seric # ifndef FORK 4749c9e68d9Seric # define FORK fork 4759c9e68d9Seric # endif 4769c9e68d9Seric 4779c9e68d9Seric # define DOFORK(fORKfN) \ 4789c9e68d9Seric {\ 4799c9e68d9Seric register int i;\ 4809c9e68d9Seric \ 4819c9e68d9Seric for (i = NFORKTRIES; --i >= 0; )\ 4829c9e68d9Seric {\ 4839c9e68d9Seric pid = fORKfN();\ 4849c9e68d9Seric if (pid >= 0)\ 4859c9e68d9Seric break;\ 4869c9e68d9Seric if (i > 0)\ 4879c9e68d9Seric sleep((unsigned) NFORKTRIES - i);\ 4889c9e68d9Seric }\ 4899c9e68d9Seric } 4909c9e68d9Seric /* 4919c9e68d9Seric ** DOFORK -- simple fork interface to DOFORK. 4929c9e68d9Seric ** 4939c9e68d9Seric ** Parameters: 4949c9e68d9Seric ** none. 4959c9e68d9Seric ** 4969c9e68d9Seric ** Returns: 4979c9e68d9Seric ** pid of child in parent. 4989c9e68d9Seric ** zero in child. 4999c9e68d9Seric ** -1 on error. 5009c9e68d9Seric ** 5019c9e68d9Seric ** Side Effects: 5029c9e68d9Seric ** returns twice, once in parent and once in child. 5039c9e68d9Seric */ 5049c9e68d9Seric 5059c9e68d9Seric dofork() 5069c9e68d9Seric { 5079c9e68d9Seric register int pid; 5089c9e68d9Seric 5099c9e68d9Seric DOFORK(fork); 5109c9e68d9Seric return (pid); 5119c9e68d9Seric } 5129c9e68d9Seric /* 51313bbc08cSeric ** DELIVER -- Deliver a message to a list of addresses. 51413bbc08cSeric ** 51513bbc08cSeric ** This routine delivers to everyone on the same host as the 51613bbc08cSeric ** user on the head of the list. It is clever about mailers 51713bbc08cSeric ** that don't handle multiple users. It is NOT guaranteed 51813bbc08cSeric ** that it will deliver to all these addresses however -- so 51913bbc08cSeric ** deliver should be called once for each address on the 52013bbc08cSeric ** list. 52125a99e2eSeric ** 52225a99e2eSeric ** Parameters: 523588cad61Seric ** e -- the envelope to deliver. 524c77d1c25Seric ** firstto -- head of the address list to deliver to. 52525a99e2eSeric ** 52625a99e2eSeric ** Returns: 52725a99e2eSeric ** zero -- successfully delivered. 52825a99e2eSeric ** else -- some failure, see ExitStat for more info. 52925a99e2eSeric ** 53025a99e2eSeric ** Side Effects: 53125a99e2eSeric ** The standard input is passed off to someone. 53225a99e2eSeric */ 53325a99e2eSeric 534588cad61Seric deliver(e, firstto) 535588cad61Seric register ENVELOPE *e; 536c77d1c25Seric ADDRESS *firstto; 53725a99e2eSeric { 53878442df3Seric char *host; /* host being sent to */ 53978442df3Seric char *user; /* user being sent to */ 54025a99e2eSeric char **pvp; 5415dfc646bSeric register char **mvp; 54225a99e2eSeric register char *p; 543588cad61Seric register MAILER *m; /* mailer for this recipient */ 5446259796dSeric ADDRESS *ctladdr; 545b31e7f2bSeric register MCI *mci; 546c77d1c25Seric register ADDRESS *to = firstto; 547c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 548772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 549911693bfSbostic int rcode; /* response code */ 550e103b48fSeric char *firstsig; /* signature of firstto */ 5519c9e68d9Seric int pid; 5529c9e68d9Seric char *curhost; 5539c9e68d9Seric int mpvect[2]; 5549c9e68d9Seric int rpvect[2]; 555ee6bf8dfSeric char *pv[MAXPV+1]; 556579ef0ddSeric char tobuf[TOBUFSIZE]; /* text line of to people */ 557ee6bf8dfSeric char buf[MAXNAME]; 558c23ed322Seric char rpathbuf[MAXNAME]; /* translated return path */ 559fabb3bd4Seric extern int checkcompat(); 5609c9e68d9Seric extern FILE *fdopen(); 56125a99e2eSeric 56235490626Seric errno = 0; 563ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags)) 5645dfc646bSeric return (0); 56525a99e2eSeric 566134746fbSeric #ifdef NAMED_BIND 567912a731aSbostic /* unless interactive, try twice, over a minute */ 568912a731aSbostic if (OpMode == MD_DAEMON || OpMode == MD_SMTP) { 569912a731aSbostic _res.retrans = 30; 570912a731aSbostic _res.retry = 2; 571912a731aSbostic } 572d4bd8f0eSbostic #endif 573912a731aSbostic 57451552439Seric m = to->q_mailer; 57551552439Seric host = to->q_host; 576c9be6216Seric CurEnv = e; /* just in case */ 5774384d521Seric e->e_statmsg = NULL; 57851552439Seric 5796ef48975Seric if (tTd(10, 1)) 5805dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 58151552439Seric m->m_mno, host, to->q_user); 582f3dbc832Seric 583f3dbc832Seric /* 584f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 585f3dbc832Seric ** connections now, just mark these addresses and return. 586f3dbc832Seric ** This is useful if we want to batch connections to 587f3dbc832Seric ** reduce load. This will cause the messages to be 588f3dbc832Seric ** queued up, and a daemon will come along to send the 589f3dbc832Seric ** messages later. 590f3dbc832Seric ** This should be on a per-mailer basis. 591f3dbc832Seric */ 592f3dbc832Seric 59319c47125Seric if (NoConnect && !bitset(EF_QUEUERUN, e->e_flags) && 59419c47125Seric bitnset(M_EXPENSIVE, m->m_flags) && !Verbose) 595f3dbc832Seric { 596f3dbc832Seric for (; to != NULL; to = to->q_next) 597f4560e80Seric { 598ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 599c6e18ac5Seric to->q_mailer != m) 600f4560e80Seric continue; 601268a25e1Seric to->q_flags |= QQUEUEUP; 602588cad61Seric e->e_to = to->q_paddr; 60308b25121Seric message("queued"); 6042f624c86Seric if (LogLevel > 8) 60581161401Seric logdelivery(m, NULL, "queued", e); 606f4560e80Seric } 607588cad61Seric e->e_to = NULL; 608f3dbc832Seric return (0); 609f3dbc832Seric } 610f3dbc832Seric 61125a99e2eSeric /* 6125dfc646bSeric ** Do initial argv setup. 6135dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 6145dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 6155dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 6165dfc646bSeric ** code does not check for 'pv' overflow; this places a 6175dfc646bSeric ** manifest lower limit of 4 for MAXPV. 6183bea8136Seric ** The from address rewrite is expected to make 6193bea8136Seric ** the address relative to the other end. 6205dfc646bSeric */ 6215dfc646bSeric 62278442df3Seric /* rewrite from address, using rewriting rules */ 623efe54562Seric rcode = EX_OK; 624efe54562Seric (void) strcpy(rpathbuf, remotename(e->e_from.q_paddr, m, 625efe54562Seric RF_SENDERADDR|RF_CANONICAL, 626efe54562Seric &rcode, e)); 627ee4b0922Seric define('g', rpathbuf, e); /* translated return path */ 628588cad61Seric define('h', host, e); /* to host */ 6295dfc646bSeric Errors = 0; 6305dfc646bSeric pvp = pv; 6315dfc646bSeric *pvp++ = m->m_argv[0]; 6325dfc646bSeric 6335dfc646bSeric /* insert -f or -r flag as appropriate */ 63457fc6f17Seric if (FromFlag && (bitnset(M_FOPT, m->m_flags) || bitnset(M_ROPT, m->m_flags))) 6355dfc646bSeric { 63657fc6f17Seric if (bitnset(M_FOPT, m->m_flags)) 6375dfc646bSeric *pvp++ = "-f"; 6385dfc646bSeric else 6395dfc646bSeric *pvp++ = "-r"; 640c23ed322Seric *pvp++ = newstr(rpathbuf); 6415dfc646bSeric } 6425dfc646bSeric 6435dfc646bSeric /* 6445dfc646bSeric ** Append the other fixed parts of the argv. These run 6455dfc646bSeric ** up to the first entry containing "$u". There can only 6465dfc646bSeric ** be one of these, and there are only a few more slots 6475dfc646bSeric ** in the pv after it. 6485dfc646bSeric */ 6495dfc646bSeric 6505dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 6515dfc646bSeric { 6522bc47524Seric /* can't use strchr here because of sign extension problems */ 6532bc47524Seric while (*p != '\0') 6542bc47524Seric { 6552bc47524Seric if ((*p++ & 0377) == MACROEXPAND) 6562bc47524Seric { 6572bc47524Seric if (*p == 'u') 6585dfc646bSeric break; 6592bc47524Seric } 6602bc47524Seric } 6612bc47524Seric 6622bc47524Seric if (*p != '\0') 6635dfc646bSeric break; 6645dfc646bSeric 6655dfc646bSeric /* this entry is safe -- go ahead and process it */ 666588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 6675dfc646bSeric *pvp++ = newstr(buf); 6685dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 6695dfc646bSeric { 67008b25121Seric syserr("554 Too many parameters to %s before $u", pv[0]); 6715dfc646bSeric return (-1); 6725dfc646bSeric } 6735dfc646bSeric } 674c579ef51Seric 67533db8731Seric /* 67633db8731Seric ** If we have no substitution for the user name in the argument 67733db8731Seric ** list, we know that we must supply the names otherwise -- and 67833db8731Seric ** SMTP is the answer!! 67933db8731Seric */ 68033db8731Seric 6815dfc646bSeric if (*mvp == NULL) 682c579ef51Seric { 683c579ef51Seric /* running SMTP */ 6842c7e1b8dSeric # ifdef SMTP 685c579ef51Seric clever = TRUE; 686c579ef51Seric *pvp = NULL; 6876c2c3107Seric # else /* SMTP */ 68833db8731Seric /* oops! we don't implement SMTP */ 68908b25121Seric syserr("554 SMTP style mailer"); 6902c7e1b8dSeric return (EX_SOFTWARE); 6916c2c3107Seric # endif /* SMTP */ 692c579ef51Seric } 6935dfc646bSeric 6945dfc646bSeric /* 6955dfc646bSeric ** At this point *mvp points to the argument with $u. We 6965dfc646bSeric ** run through our address list and append all the addresses 6975dfc646bSeric ** we can. If we run out of space, do not fret! We can 6985dfc646bSeric ** always send another copy later. 6995dfc646bSeric */ 7005dfc646bSeric 7015dfc646bSeric tobuf[0] = '\0'; 702588cad61Seric e->e_to = tobuf; 7036259796dSeric ctladdr = NULL; 704e103b48fSeric firstsig = hostsignature(firstto->q_mailer, firstto->q_host, e); 7055dfc646bSeric for (; to != NULL; to = to->q_next) 7065dfc646bSeric { 7075dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 70857fc6f17Seric if (tobuf[0] != '\0' && !bitnset(M_MUSER, m->m_flags)) 7095dfc646bSeric break; 7105dfc646bSeric 7115dfc646bSeric /* if already sent or not for this host, don't send */ 712ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 713e103b48fSeric to->q_mailer != firstto->q_mailer || 714e103b48fSeric strcmp(hostsignature(to->q_mailer, to->q_host, e), firstsig) != 0) 7155dfc646bSeric continue; 7166259796dSeric 7174b22ea87Seric /* avoid overflowing tobuf */ 718aa50a568Sbostic if (sizeof tobuf < (strlen(to->q_paddr) + strlen(tobuf) + 2)) 7194b22ea87Seric break; 7204b22ea87Seric 7216ef48975Seric if (tTd(10, 1)) 722772e6e50Seric { 723772e6e50Seric printf("\nsend to "); 724772e6e50Seric printaddr(to, FALSE); 725772e6e50Seric } 726772e6e50Seric 7276259796dSeric /* compute effective uid/gid when sending */ 7287da1035fSeric if (to->q_mailer == ProgMailer) 7296259796dSeric ctladdr = getctladdr(to); 7306259796dSeric 7315dfc646bSeric user = to->q_user; 732588cad61Seric e->e_to = to->q_paddr; 73375f1ade9Seric if (tTd(10, 5)) 73475f1ade9Seric { 73575f1ade9Seric printf("deliver: QDONTSEND "); 73675f1ade9Seric printaddr(to, FALSE); 73775f1ade9Seric } 738ee4b0922Seric to->q_flags |= QDONTSEND; 7395dfc646bSeric 7405dfc646bSeric /* 7415dfc646bSeric ** Check to see that these people are allowed to 7425dfc646bSeric ** talk to each other. 7432a6e0786Seric */ 7442a6e0786Seric 74569582d2fSeric if (m->m_maxsize != 0 && e->e_msgsize > m->m_maxsize) 74669582d2fSeric { 74769582d2fSeric NoReturn = TRUE; 74808b25121Seric usrerr("552 Message is too large; %ld bytes max", m->m_maxsize); 74981161401Seric giveresponse(EX_UNAVAILABLE, m, NULL, e); 75069582d2fSeric continue; 75169582d2fSeric } 752fabb3bd4Seric rcode = checkcompat(to, e); 7531793c9c5Seric if (rcode != EX_OK) 7545dfc646bSeric { 7551000c37aSeric markfailure(e, to, rcode); 75681161401Seric giveresponse(rcode, m, NULL, e); 7575dfc646bSeric continue; 7585dfc646bSeric } 7592a6e0786Seric 7602a6e0786Seric /* 7619ec9501bSeric ** Strip quote bits from names if the mailer is dumb 7629ec9501bSeric ** about them. 76325a99e2eSeric */ 76425a99e2eSeric 76557fc6f17Seric if (bitnset(M_STRIPQ, m->m_flags)) 76625a99e2eSeric { 7671d8f1806Seric stripquotes(user); 7681d8f1806Seric stripquotes(host); 76925a99e2eSeric } 77025a99e2eSeric 771cdb828c5Seric /* hack attack -- delivermail compatibility */ 772cdb828c5Seric if (m == ProgMailer && *user == '|') 773cdb828c5Seric user++; 774cdb828c5Seric 77525a99e2eSeric /* 7763efaed6eSeric ** If an error message has already been given, don't 7773efaed6eSeric ** bother to send to this address. 7783efaed6eSeric ** 7793efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 7803efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 7813efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 7823efaed6eSeric */ 7833efaed6eSeric 7846cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 7853efaed6eSeric continue; 7863efaed6eSeric 787f2fec898Seric /* save statistics.... */ 788588cad61Seric markstats(e, to); 789f2fec898Seric 7903efaed6eSeric /* 79125a99e2eSeric ** See if this user name is "special". 79225a99e2eSeric ** If the user name has a slash in it, assume that this 79351552439Seric ** is a file -- send it off without further ado. Note 79451552439Seric ** that this type of addresses is not processed along 79551552439Seric ** with the others, so we fudge on the To person. 79625a99e2eSeric */ 79725a99e2eSeric 7982c017f8dSeric if (m == FileMailer) 79925a99e2eSeric { 800b31e7f2bSeric rcode = mailfile(user, getctladdr(to), e); 80181161401Seric giveresponse(rcode, m, NULL, e); 802dde5acadSeric if (rcode == EX_OK) 803dde5acadSeric to->q_flags |= QSENT; 8045dfc646bSeric continue; 80525a99e2eSeric } 80625a99e2eSeric 80713bbc08cSeric /* 80813bbc08cSeric ** Address is verified -- add this user to mailer 80913bbc08cSeric ** argv, and add it to the print list of recipients. 81013bbc08cSeric */ 81113bbc08cSeric 812508daeccSeric /* link together the chain of recipients */ 813508daeccSeric to->q_tchain = tochain; 814508daeccSeric tochain = to; 815508daeccSeric 8165dfc646bSeric /* create list of users for error messages */ 817db8841e9Seric (void) strcat(tobuf, ","); 818db8841e9Seric (void) strcat(tobuf, to->q_paddr); 819588cad61Seric define('u', user, e); /* to user */ 820588cad61Seric define('z', to->q_home, e); /* user's home */ 8215dfc646bSeric 822c579ef51Seric /* 823508daeccSeric ** Expand out this user into argument list. 824c579ef51Seric */ 825c579ef51Seric 826508daeccSeric if (!clever) 827c579ef51Seric { 828588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8295dfc646bSeric *pvp++ = newstr(buf); 8305dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 8315dfc646bSeric { 8325dfc646bSeric /* allow some space for trailing parms */ 8335dfc646bSeric break; 8345dfc646bSeric } 8355dfc646bSeric } 836c579ef51Seric } 8375dfc646bSeric 838145b49b1Seric /* see if any addresses still exist */ 839145b49b1Seric if (tobuf[0] == '\0') 840c579ef51Seric { 841588cad61Seric define('g', (char *) NULL, e); 842145b49b1Seric return (0); 843c579ef51Seric } 844145b49b1Seric 8455dfc646bSeric /* print out messages as full list */ 84663780dbdSeric e->e_to = tobuf + 1; 8475dfc646bSeric 8485dfc646bSeric /* 8495dfc646bSeric ** Fill out any parameters after the $u parameter. 8505dfc646bSeric */ 8515dfc646bSeric 852c579ef51Seric while (!clever && *++mvp != NULL) 8535dfc646bSeric { 854588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8555dfc646bSeric *pvp++ = newstr(buf); 8565dfc646bSeric if (pvp >= &pv[MAXPV]) 85708b25121Seric syserr("554 deliver: pv overflow after $u for %s", pv[0]); 8585dfc646bSeric } 8595dfc646bSeric *pvp++ = NULL; 8605dfc646bSeric 86125a99e2eSeric /* 86225a99e2eSeric ** Call the mailer. 8636328bdf7Seric ** The argument vector gets built, pipes 86425a99e2eSeric ** are created as necessary, and we fork & exec as 8656328bdf7Seric ** appropriate. 866c579ef51Seric ** If we are running SMTP, we just need to clean up. 86725a99e2eSeric */ 86825a99e2eSeric 8697ee87e5fSeric if (ctladdr == NULL && m != ProgMailer) 87086b26461Seric ctladdr = &e->e_from; 871134746fbSeric #ifdef NAMED_BIND 8722bcc6d2dSeric if (ConfigLevel < 2) 873912a731aSbostic _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 874134746fbSeric #endif 8759c9e68d9Seric 8769c9e68d9Seric if (tTd(11, 1)) 877134746fbSeric { 8789c9e68d9Seric printf("openmailer:"); 8799c9e68d9Seric printav(pv); 8809c9e68d9Seric } 8819c9e68d9Seric errno = 0; 8829c9e68d9Seric 8839c9e68d9Seric CurHostName = m->m_mailer; 8849c9e68d9Seric 8859c9e68d9Seric /* 8869c9e68d9Seric ** Deal with the special case of mail handled through an IPC 8879c9e68d9Seric ** connection. 8889c9e68d9Seric ** In this case we don't actually fork. We must be 8899c9e68d9Seric ** running SMTP for this to work. We will return a 8909c9e68d9Seric ** zero pid to indicate that we are running IPC. 8919c9e68d9Seric ** We also handle a debug version that just talks to stdin/out. 8929c9e68d9Seric */ 8939c9e68d9Seric 8949c9e68d9Seric curhost = NULL; 895c931b82bSeric SmtpPhase = NULL; 8969c9e68d9Seric 897*7febfd66Seric #ifdef XDEBUG 898*7febfd66Seric { 899*7febfd66Seric char wbuf[MAXLINE]; 900*7febfd66Seric 901*7febfd66Seric /* make absolutely certain 0, 1, and 2 are in use */ 902*7febfd66Seric sprintf(wbuf, "%s... openmailer(%s)", e->e_to, m->m_name); 903*7febfd66Seric checkfd012(wbuf); 904*7febfd66Seric } 905*7febfd66Seric #endif 906*7febfd66Seric 907*7febfd66Seric 9089c9e68d9Seric /* check for Local Person Communication -- not for mortals!!! */ 9099c9e68d9Seric if (strcmp(m->m_mailer, "[LPC]") == 0) 9109c9e68d9Seric { 9119c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 9129c9e68d9Seric bzero((char *) mci, sizeof *mci); 9139c9e68d9Seric mci->mci_in = stdin; 9149c9e68d9Seric mci->mci_out = stdout; 9159c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 9169c9e68d9Seric mci->mci_mailer = m; 9179c9e68d9Seric } 9189c9e68d9Seric else if (strcmp(m->m_mailer, "[IPC]") == 0 || 9199c9e68d9Seric strcmp(m->m_mailer, "[TCP]") == 0) 9209c9e68d9Seric { 9219c9e68d9Seric #ifdef DAEMON 9229c9e68d9Seric register int i; 9239c9e68d9Seric register u_short port; 9249c9e68d9Seric 9259c9e68d9Seric CurHostName = pv[1]; 9269c9e68d9Seric curhost = hostsignature(m, pv[1], e); 9279c9e68d9Seric 9289c9e68d9Seric if (curhost == NULL || curhost[0] == '\0') 9299c9e68d9Seric { 9309c9e68d9Seric syserr("null signature"); 931845e533cSeric rcode = EX_OSERR; 932b31e7f2bSeric goto give_up; 933b31e7f2bSeric } 9349c9e68d9Seric 9359c9e68d9Seric if (!clever) 9369c9e68d9Seric { 9379c9e68d9Seric syserr("554 non-clever IPC"); 9389c9e68d9Seric rcode = EX_OSERR; 9399c9e68d9Seric goto give_up; 9409c9e68d9Seric } 9419c9e68d9Seric if (pv[2] != NULL) 9429c9e68d9Seric port = atoi(pv[2]); 9439c9e68d9Seric else 9449c9e68d9Seric port = 0; 9459c9e68d9Seric tryhost: 9469c9e68d9Seric mci = NULL; 9479c9e68d9Seric while (*curhost != '\0') 9489c9e68d9Seric { 9499c9e68d9Seric register char *p; 9509c9e68d9Seric static char hostbuf[MAXNAME]; 9519c9e68d9Seric 9529c9e68d9Seric mci = NULL; 9539c9e68d9Seric 9549c9e68d9Seric /* pull the next host from the signature */ 9559c9e68d9Seric p = strchr(curhost, ':'); 9569c9e68d9Seric if (p == NULL) 9579c9e68d9Seric p = &curhost[strlen(curhost)]; 9589c9e68d9Seric strncpy(hostbuf, curhost, p - curhost); 9599c9e68d9Seric hostbuf[p - curhost] = '\0'; 9609c9e68d9Seric if (*p != '\0') 9619c9e68d9Seric p++; 9629c9e68d9Seric curhost = p; 9639c9e68d9Seric 9649c9e68d9Seric /* see if we already know that this host is fried */ 9659c9e68d9Seric CurHostName = hostbuf; 9669c9e68d9Seric mci = mci_get(hostbuf, m); 9679c9e68d9Seric if (mci->mci_state != MCIS_CLOSED) 9689c9e68d9Seric { 9699c9e68d9Seric if (tTd(11, 1)) 9709c9e68d9Seric { 9719c9e68d9Seric printf("openmailer: "); 9729c9e68d9Seric mci_dump(mci); 9739c9e68d9Seric } 9749c9e68d9Seric CurHostName = mci->mci_host; 9759c9e68d9Seric break; 9769c9e68d9Seric } 9779c9e68d9Seric mci->mci_mailer = m; 9789c9e68d9Seric if (mci->mci_exitstat != EX_OK) 9799c9e68d9Seric continue; 9809c9e68d9Seric 9819c9e68d9Seric /* try the connection */ 9829c9e68d9Seric setproctitle("%s %s: %s", e->e_id, hostbuf, "user open"); 9839c9e68d9Seric message("Connecting to %s (%s)...", 9849c9e68d9Seric hostbuf, m->m_name); 9859c9e68d9Seric i = makeconnection(hostbuf, port, mci, 9869c9e68d9Seric bitnset(M_SECURE_PORT, m->m_flags)); 9879c9e68d9Seric mci->mci_exitstat = i; 9889c9e68d9Seric mci->mci_errno = errno; 989f170942cSeric #ifdef NAMED_BIND 990f170942cSeric mci->mci_herrno = h_errno; 991f170942cSeric #endif 9929c9e68d9Seric if (i == EX_OK) 9939c9e68d9Seric { 9949c9e68d9Seric mci->mci_state = MCIS_OPENING; 9959c9e68d9Seric mci_cache(mci); 996f170942cSeric if (TrafficLogFile != NULL) 997f170942cSeric fprintf(TrafficLogFile, "%05d == CONNECT %s\n", 998f170942cSeric getpid(), hostbuf); 9999c9e68d9Seric break; 10009c9e68d9Seric } 10019c9e68d9Seric else if (tTd(11, 1)) 10029c9e68d9Seric printf("openmailer: makeconnection => stat=%d, errno=%d\n", 10039c9e68d9Seric i, errno); 10049c9e68d9Seric 10059c9e68d9Seric 10069c9e68d9Seric /* enter status of this host */ 10079c9e68d9Seric setstat(i); 10089c9e68d9Seric } 10099c9e68d9Seric mci->mci_pid = 0; 10109c9e68d9Seric #else /* no DAEMON */ 10119c9e68d9Seric syserr("554 openmailer: no IPC"); 10129c9e68d9Seric if (tTd(11, 1)) 10139c9e68d9Seric printf("openmailer: NULL\n"); 10149c9e68d9Seric return NULL; 10159c9e68d9Seric #endif /* DAEMON */ 10169c9e68d9Seric } 10179c9e68d9Seric else 10189c9e68d9Seric { 1019f170942cSeric if (TrafficLogFile != NULL) 10200e3bfef5Seric { 1021f170942cSeric char **av; 1022f170942cSeric 1023f170942cSeric fprintf(TrafficLogFile, "%05d === EXEC", getpid()); 1024f170942cSeric for (av = pv; *av != NULL; av++) 1025f170942cSeric fprintf(TrafficLogFile, " %s", *av); 1026f170942cSeric fprintf(TrafficLogFile, "\n"); 10276fe8c3bcSeric } 10286fe8c3bcSeric 10299c9e68d9Seric /* create a pipe to shove the mail through */ 10309c9e68d9Seric if (pipe(mpvect) < 0) 10319c9e68d9Seric { 10320e3bfef5Seric syserr("%s... openmailer(%s): pipe (to mailer)", 10330e3bfef5Seric e->e_to, m->m_name); 10349c9e68d9Seric if (tTd(11, 1)) 10359c9e68d9Seric printf("openmailer: NULL\n"); 10369c9e68d9Seric rcode = EX_OSERR; 10379c9e68d9Seric goto give_up; 10389c9e68d9Seric } 10399c9e68d9Seric 10409c9e68d9Seric /* if this mailer speaks smtp, create a return pipe */ 10419c9e68d9Seric if (clever && pipe(rpvect) < 0) 10429c9e68d9Seric { 10430e3bfef5Seric syserr("%s... openmailer(%s): pipe (from mailer)", 10440e3bfef5Seric e->e_to, m->m_name); 10459c9e68d9Seric (void) close(mpvect[0]); 10469c9e68d9Seric (void) close(mpvect[1]); 10479c9e68d9Seric if (tTd(11, 1)) 10489c9e68d9Seric printf("openmailer: NULL\n"); 10499c9e68d9Seric rcode = EX_OSERR; 10509c9e68d9Seric goto give_up; 10519c9e68d9Seric } 10529c9e68d9Seric 10539c9e68d9Seric /* 10549c9e68d9Seric ** Actually fork the mailer process. 10559c9e68d9Seric ** DOFORK is clever about retrying. 10569c9e68d9Seric ** 10579c9e68d9Seric ** Dispose of SIGCHLD signal catchers that may be laying 10589c9e68d9Seric ** around so that endmail will get it. 10599c9e68d9Seric */ 10609c9e68d9Seric 10619c9e68d9Seric if (e->e_xfp != NULL) 10629c9e68d9Seric (void) fflush(e->e_xfp); /* for debugging */ 10639c9e68d9Seric (void) fflush(stdout); 10649c9e68d9Seric # ifdef SIGCHLD 10652b9178d3Seric (void) setsignal(SIGCHLD, SIG_DFL); 10669c9e68d9Seric # endif /* SIGCHLD */ 10679c9e68d9Seric DOFORK(FORK); 10689c9e68d9Seric /* pid is set by DOFORK */ 10699c9e68d9Seric if (pid < 0) 10709c9e68d9Seric { 10719c9e68d9Seric /* failure */ 10720e3bfef5Seric syserr("%s... openmailer(%s): cannot fork", 10730e3bfef5Seric e->e_to, m->m_name); 10749c9e68d9Seric (void) close(mpvect[0]); 10759c9e68d9Seric (void) close(mpvect[1]); 10769c9e68d9Seric if (clever) 10779c9e68d9Seric { 10789c9e68d9Seric (void) close(rpvect[0]); 10799c9e68d9Seric (void) close(rpvect[1]); 10809c9e68d9Seric } 10819c9e68d9Seric if (tTd(11, 1)) 10829c9e68d9Seric printf("openmailer: NULL\n"); 10839c9e68d9Seric rcode = EX_OSERR; 10849c9e68d9Seric goto give_up; 10859c9e68d9Seric } 10869c9e68d9Seric else if (pid == 0) 10879c9e68d9Seric { 10889c9e68d9Seric int i; 10899c9e68d9Seric int saveerrno; 10909c9e68d9Seric char **ep; 10919c9e68d9Seric char *env[MAXUSERENVIRON]; 10929c9e68d9Seric extern char **environ; 10939c9e68d9Seric extern int DtableSize; 10949c9e68d9Seric 10959c9e68d9Seric /* child -- set up input & exec mailer */ 10962b9178d3Seric (void) setsignal(SIGINT, SIG_IGN); 10972b9178d3Seric (void) setsignal(SIGHUP, SIG_IGN); 10982b9178d3Seric (void) setsignal(SIGTERM, SIG_DFL); 10999c9e68d9Seric 11009c9e68d9Seric /* close any other cached connections */ 11019c9e68d9Seric mci_flush(FALSE, mci); 11029c9e68d9Seric 110344f2317fSeric /* reset user and group */ 110444f2317fSeric if (!bitnset(M_RESTR, m->m_flags)) 110544f2317fSeric { 110644f2317fSeric if (ctladdr == NULL || ctladdr->q_uid == 0) 110744f2317fSeric { 110844f2317fSeric (void) initgroups(DefUser, DefGid); 110944f2317fSeric (void) setuid(DefUid); 111044f2317fSeric } 111144f2317fSeric else 111244f2317fSeric { 111344f2317fSeric (void) initgroups(ctladdr->q_ruser? 111444f2317fSeric ctladdr->q_ruser: ctladdr->q_user, 111544f2317fSeric ctladdr->q_gid); 111644f2317fSeric (void) setuid(ctladdr->q_uid); 111744f2317fSeric } 111844f2317fSeric } 111944f2317fSeric 112044f2317fSeric if (tTd(11, 2)) 112144f2317fSeric printf("openmailer: running as r/euid=%d/%d\n", 112244f2317fSeric getuid(), geteuid()); 112344f2317fSeric 1124b986f6aaSeric /* move into some "safe" directory */ 1125b986f6aaSeric if (m->m_execdir != NULL) 1126b986f6aaSeric { 1127b986f6aaSeric char *p, *q; 1128b986f6aaSeric char buf[MAXLINE]; 1129b986f6aaSeric 1130b986f6aaSeric for (p = m->m_execdir; p != NULL; p = q) 1131b986f6aaSeric { 1132b986f6aaSeric q = strchr(p, ':'); 1133b986f6aaSeric if (q != NULL) 1134b986f6aaSeric *q = '\0'; 1135b986f6aaSeric expand(p, buf, &buf[sizeof buf] - 1, e); 1136b986f6aaSeric if (q != NULL) 1137b986f6aaSeric *q++ = ':'; 1138b986f6aaSeric if (tTd(11, 20)) 1139b986f6aaSeric printf("openmailer: trydir %s\n", 1140b986f6aaSeric buf); 1141b986f6aaSeric if (buf[0] != '\0' && chdir(buf) >= 0) 1142b986f6aaSeric break; 1143b986f6aaSeric } 1144b986f6aaSeric } 1145b986f6aaSeric 11469c9e68d9Seric /* arrange to filter std & diag output of command */ 11479c9e68d9Seric if (clever) 11489c9e68d9Seric { 11499c9e68d9Seric (void) close(rpvect[0]); 11506fe8c3bcSeric if (dup2(rpvect[1], STDOUT_FILENO) < 0) 11516fe8c3bcSeric { 11520e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdout", 11530e3bfef5Seric e->e_to, m->m_name, rpvect[1]); 11546fe8c3bcSeric _exit(EX_OSERR); 11556fe8c3bcSeric } 11569c9e68d9Seric (void) close(rpvect[1]); 11579c9e68d9Seric } 11589c9e68d9Seric else if (OpMode == MD_SMTP || HoldErrs) 11599c9e68d9Seric { 11609c9e68d9Seric /* put mailer output in transcript */ 11616fe8c3bcSeric if (dup2(fileno(e->e_xfp), STDOUT_FILENO) < 0) 11626fe8c3bcSeric { 11630e3bfef5Seric syserr("%s... openmailer(%s): cannot dup xscript %d for stdout", 11640e3bfef5Seric e->e_to, m->m_name, 11656fe8c3bcSeric fileno(e->e_xfp)); 11666fe8c3bcSeric _exit(EX_OSERR); 11679c9e68d9Seric } 11686fe8c3bcSeric } 11696fe8c3bcSeric if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0) 11706fe8c3bcSeric { 11710e3bfef5Seric syserr("%s... openmailer(%s): cannot dup stdout for stderr", 11720e3bfef5Seric e->e_to, m->m_name); 11736fe8c3bcSeric _exit(EX_OSERR); 11746fe8c3bcSeric } 11759c9e68d9Seric 11769c9e68d9Seric /* arrange to get standard input */ 11779c9e68d9Seric (void) close(mpvect[1]); 11789c9e68d9Seric if (dup2(mpvect[0], STDIN_FILENO) < 0) 11799c9e68d9Seric { 11800e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdin", 11810e3bfef5Seric e->e_to, m->m_name, mpvect[0]); 11829c9e68d9Seric _exit(EX_OSERR); 11839c9e68d9Seric } 11849c9e68d9Seric (void) close(mpvect[0]); 11859c9e68d9Seric 11869c9e68d9Seric /* arrange for all the files to be closed */ 11879c9e68d9Seric for (i = 3; i < DtableSize; i++) 11889c9e68d9Seric { 11899c9e68d9Seric register int j; 119044f2317fSeric 11919c9e68d9Seric if ((j = fcntl(i, F_GETFD, 0)) != -1) 11929c9e68d9Seric (void) fcntl(i, F_SETFD, j | 1); 11939c9e68d9Seric } 11949c9e68d9Seric 11959c9e68d9Seric /* set up the mailer environment */ 11969c9e68d9Seric i = 0; 11979c9e68d9Seric env[i++] = "AGENT=sendmail"; 11989c9e68d9Seric for (ep = environ; *ep != NULL; ep++) 11999c9e68d9Seric { 12009c9e68d9Seric if (strncmp(*ep, "TZ=", 3) == 0) 12019c9e68d9Seric env[i++] = *ep; 12029c9e68d9Seric } 12039c9e68d9Seric env[i++] = NULL; 12049c9e68d9Seric 12059c9e68d9Seric /* try to execute the mailer */ 12069c9e68d9Seric execve(m->m_mailer, pv, env); 12079c9e68d9Seric saveerrno = errno; 12089c9e68d9Seric syserr("Cannot exec %s", m->m_mailer); 12097c941fd2Seric if (m == LocalMailer || transienterror(saveerrno)) 12107c941fd2Seric _exit(EX_OSERR); 12119c9e68d9Seric _exit(EX_UNAVAILABLE); 12129c9e68d9Seric } 12139c9e68d9Seric 12149c9e68d9Seric /* 12159c9e68d9Seric ** Set up return value. 12169c9e68d9Seric */ 12179c9e68d9Seric 12189c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 12199c9e68d9Seric bzero((char *) mci, sizeof *mci); 12209c9e68d9Seric mci->mci_mailer = m; 12219c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 12229c9e68d9Seric mci->mci_pid = pid; 12239c9e68d9Seric (void) close(mpvect[0]); 12249c9e68d9Seric mci->mci_out = fdopen(mpvect[1], "w"); 12259c9e68d9Seric if (clever) 12269c9e68d9Seric { 12279c9e68d9Seric (void) close(rpvect[1]); 12289c9e68d9Seric mci->mci_in = fdopen(rpvect[0], "r"); 12299c9e68d9Seric } 12309c9e68d9Seric else 12319c9e68d9Seric { 12329c9e68d9Seric mci->mci_flags |= MCIF_TEMP; 12339c9e68d9Seric mci->mci_in = NULL; 12349c9e68d9Seric } 12359c9e68d9Seric } 12369c9e68d9Seric 12379c9e68d9Seric /* 12389c9e68d9Seric ** If we are in SMTP opening state, send initial protocol. 12399c9e68d9Seric */ 12409c9e68d9Seric 12419c9e68d9Seric if (clever && mci->mci_state != MCIS_CLOSED) 12429c9e68d9Seric { 12439c9e68d9Seric smtpinit(m, mci, e); 12449c9e68d9Seric } 12459c9e68d9Seric if (tTd(11, 1)) 12469c9e68d9Seric { 12479c9e68d9Seric printf("openmailer: "); 12489c9e68d9Seric mci_dump(mci); 12499c9e68d9Seric } 12509c9e68d9Seric 12519c9e68d9Seric if (mci->mci_state != MCIS_OPEN) 1252b31e7f2bSeric { 1253b31e7f2bSeric /* couldn't open the mailer */ 1254b31e7f2bSeric rcode = mci->mci_exitstat; 12552a6bc25bSeric errno = mci->mci_errno; 1256f170942cSeric #ifdef NAMED_BIND 1257f170942cSeric h_errno = mci->mci_herrno; 1258f170942cSeric #endif 1259b31e7f2bSeric if (rcode == EX_OK) 1260b31e7f2bSeric { 1261b31e7f2bSeric /* shouldn't happen */ 126208b25121Seric syserr("554 deliver: rcode=%d, mci_state=%d, sig=%s", 12636b0f339dSeric rcode, mci->mci_state, firstsig); 1264b31e7f2bSeric rcode = EX_SOFTWARE; 1265b31e7f2bSeric } 1266e9277e33Seric else if (rcode == EX_TEMPFAIL && *curhost != '\0') 126790891494Seric { 126890891494Seric /* try next MX site */ 126990891494Seric goto tryhost; 127090891494Seric } 1271b31e7f2bSeric } 1272b31e7f2bSeric else if (!clever) 1273b31e7f2bSeric { 1274b31e7f2bSeric /* 1275b31e7f2bSeric ** Format and send message. 1276b31e7f2bSeric */ 127715d084d5Seric 1278b31e7f2bSeric putfromline(mci->mci_out, m, e); 1279b31e7f2bSeric (*e->e_puthdr)(mci->mci_out, m, e); 1280b31e7f2bSeric putline("\n", mci->mci_out, m); 128103c02fdeSeric (*e->e_putbody)(mci->mci_out, m, e, NULL); 1282b31e7f2bSeric 1283b31e7f2bSeric /* get the exit status */ 1284c9be6216Seric rcode = endmailer(mci, e, pv); 1285134746fbSeric } 1286134746fbSeric else 1287b31e7f2bSeric #ifdef SMTP 1288134746fbSeric { 1289b31e7f2bSeric /* 1290b31e7f2bSeric ** Send the MAIL FROM: protocol 1291b31e7f2bSeric */ 129215d084d5Seric 1293b31e7f2bSeric rcode = smtpmailfrom(m, mci, e); 1294b31e7f2bSeric if (rcode == EX_OK) 129575889e88Seric { 1296ded0d3daSkarels register char *t = tobuf; 1297ded0d3daSkarels register int i; 1298ded0d3daSkarels 1299588cad61Seric /* send the recipient list */ 130063780dbdSeric tobuf[0] = '\0'; 130175889e88Seric for (to = tochain; to != NULL; to = to->q_tchain) 130275889e88Seric { 130363780dbdSeric e->e_to = to->q_paddr; 130415d084d5Seric if ((i = smtprcpt(to, m, mci, e)) != EX_OK) 130575889e88Seric { 130683b7ddc9Seric markfailure(e, to, i); 130781161401Seric giveresponse(i, m, mci, e); 130863780dbdSeric } 130975889e88Seric else 131075889e88Seric { 1311911693bfSbostic *t++ = ','; 1312b31e7f2bSeric for (p = to->q_paddr; *p; *t++ = *p++) 1313b31e7f2bSeric continue; 1314ee39df61Seric *t = '\0'; 1315588cad61Seric } 1316588cad61Seric } 1317588cad61Seric 131863780dbdSeric /* now send the data */ 131963780dbdSeric if (tobuf[0] == '\0') 1320b31e7f2bSeric { 13219c9e68d9Seric rcode = EX_OK; 132263780dbdSeric e->e_to = NULL; 1323b31e7f2bSeric if (bitset(MCIF_CACHED, mci->mci_flags)) 1324b31e7f2bSeric smtprset(m, mci, e); 1325b31e7f2bSeric } 132675889e88Seric else 132775889e88Seric { 132863780dbdSeric e->e_to = tobuf + 1; 132975889e88Seric rcode = smtpdata(m, mci, e); 133063780dbdSeric } 133163780dbdSeric 133263780dbdSeric /* now close the connection */ 1333b31e7f2bSeric if (!bitset(MCIF_CACHED, mci->mci_flags)) 133415d084d5Seric smtpquit(m, mci, e); 133563780dbdSeric } 13369c9e68d9Seric if (rcode != EX_OK && *curhost != '\0') 13379c9e68d9Seric { 13389c9e68d9Seric /* try next MX site */ 13399c9e68d9Seric goto tryhost; 13409c9e68d9Seric } 1341c579ef51Seric } 1342b31e7f2bSeric #else /* not SMTP */ 1343a05b3449Sbostic { 134408b25121Seric syserr("554 deliver: need SMTP compiled to use clever mailer"); 1345845e533cSeric rcode = EX_CONFIG; 1346b31e7f2bSeric goto give_up; 1347a05b3449Sbostic } 1348b31e7f2bSeric #endif /* SMTP */ 1349134746fbSeric #ifdef NAMED_BIND 13502bcc6d2dSeric if (ConfigLevel < 2) 1351912a731aSbostic _res.options |= RES_DEFNAMES | RES_DNSRCH; /* XXX */ 1352134746fbSeric #endif 13535dfc646bSeric 1354b31e7f2bSeric /* arrange a return receipt if requested */ 13558c13bf07Seric if (e->e_receiptto != NULL && bitnset(M_LOCALMAILER, m->m_flags)) 1356b31e7f2bSeric { 1357b31e7f2bSeric e->e_flags |= EF_SENDRECEIPT; 1358b31e7f2bSeric /* do we want to send back more info? */ 1359b31e7f2bSeric } 1360b31e7f2bSeric 1361c77d1c25Seric /* 136263780dbdSeric ** Do final status disposal. 136363780dbdSeric ** We check for something in tobuf for the SMTP case. 1364c77d1c25Seric ** If we got a temporary failure, arrange to queue the 1365c77d1c25Seric ** addressees. 1366c77d1c25Seric */ 1367c77d1c25Seric 1368b31e7f2bSeric give_up: 136963780dbdSeric if (tobuf[0] != '\0') 137081161401Seric giveresponse(rcode, m, mci, e); 1371772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 1372b31e7f2bSeric { 1373dde5acadSeric if (rcode != EX_OK) 137483b7ddc9Seric markfailure(e, to, rcode); 1375dde5acadSeric else 1376655518ecSeric { 1377dde5acadSeric to->q_flags |= QSENT; 1378655518ecSeric e->e_nsent++; 1379655518ecSeric } 1380b31e7f2bSeric } 1381b31e7f2bSeric 1382b31e7f2bSeric /* 1383b31e7f2bSeric ** Restore state and return. 1384b31e7f2bSeric */ 1385c77d1c25Seric 1386*7febfd66Seric #ifdef XDEBUG 1387*7febfd66Seric { 1388*7febfd66Seric char wbuf[MAXLINE]; 1389*7febfd66Seric 1390*7febfd66Seric /* make absolutely certain 0, 1, and 2 are in use */ 1391*7febfd66Seric sprintf(wbuf, "%s... end of deliver(%s)", e->e_to, m->m_name); 1392*7febfd66Seric checkfd012(wbuf); 1393*7febfd66Seric } 1394*7febfd66Seric #endif 1395*7febfd66Seric 139635490626Seric errno = 0; 1397588cad61Seric define('g', (char *) NULL, e); 13985826d9d3Seric return (rcode); 139925a99e2eSeric } 14005dfc646bSeric /* 140183b7ddc9Seric ** MARKFAILURE -- mark a failure on a specific address. 140283b7ddc9Seric ** 140383b7ddc9Seric ** Parameters: 140483b7ddc9Seric ** e -- the envelope we are sending. 140583b7ddc9Seric ** q -- the address to mark. 140683b7ddc9Seric ** rcode -- the code signifying the particular failure. 140783b7ddc9Seric ** 140883b7ddc9Seric ** Returns: 140983b7ddc9Seric ** none. 141083b7ddc9Seric ** 141183b7ddc9Seric ** Side Effects: 141283b7ddc9Seric ** marks the address (and possibly the envelope) with the 141383b7ddc9Seric ** failure so that an error will be returned or 141483b7ddc9Seric ** the message will be queued, as appropriate. 141583b7ddc9Seric */ 141683b7ddc9Seric 141783b7ddc9Seric markfailure(e, q, rcode) 141883b7ddc9Seric register ENVELOPE *e; 141983b7ddc9Seric register ADDRESS *q; 142083b7ddc9Seric int rcode; 142183b7ddc9Seric { 142219c47125Seric char buf[MAXLINE]; 142319c47125Seric 142483b7ddc9Seric if (rcode == EX_OK) 142583b7ddc9Seric return; 1426f170942cSeric else if (rcode == EX_TEMPFAIL) 142783b7ddc9Seric q->q_flags |= QQUEUEUP; 1428f170942cSeric else if (rcode != EX_IOERR && rcode != EX_OSERR) 1429f170942cSeric q->q_flags |= QBADADDR; 143083b7ddc9Seric } 143183b7ddc9Seric /* 1432c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 1433c579ef51Seric ** 1434c579ef51Seric ** We should never get fatal errors (e.g., segmentation 1435c579ef51Seric ** violation), so we report those specially. For other 1436c579ef51Seric ** errors, we choose a status message (into statmsg), 1437c579ef51Seric ** and if it represents an error, we print it. 1438c579ef51Seric ** 1439c579ef51Seric ** Parameters: 1440c579ef51Seric ** pid -- pid of mailer. 1441c9be6216Seric ** e -- the current envelope. 1442c9be6216Seric ** pv -- the parameter vector that invoked the mailer 1443c9be6216Seric ** (for error messages). 1444c579ef51Seric ** 1445c579ef51Seric ** Returns: 1446c579ef51Seric ** exit code of mailer. 1447c579ef51Seric ** 1448c579ef51Seric ** Side Effects: 1449c579ef51Seric ** none. 1450c579ef51Seric */ 1451c579ef51Seric 1452c9be6216Seric endmailer(mci, e, pv) 1453b31e7f2bSeric register MCI *mci; 1454c9be6216Seric register ENVELOPE *e; 1455c9be6216Seric char **pv; 1456c579ef51Seric { 1457588cad61Seric int st; 1458c579ef51Seric 145975889e88Seric /* close any connections */ 146075889e88Seric if (mci->mci_in != NULL) 1461c9be6216Seric (void) xfclose(mci->mci_in, pv[0], "mci_in"); 146275889e88Seric if (mci->mci_out != NULL) 1463c9be6216Seric (void) xfclose(mci->mci_out, pv[0], "mci_out"); 146475889e88Seric mci->mci_in = mci->mci_out = NULL; 146575889e88Seric mci->mci_state = MCIS_CLOSED; 146675889e88Seric 146733db8731Seric /* in the IPC case there is nothing to wait for */ 146875889e88Seric if (mci->mci_pid == 0) 146933db8731Seric return (EX_OK); 147033db8731Seric 147133db8731Seric /* wait for the mailer process to die and collect status */ 147275889e88Seric st = waitfor(mci->mci_pid); 1473588cad61Seric if (st == -1) 147478de67c1Seric { 1475c9be6216Seric syserr("endmailer %s: wait", pv[0]); 1476588cad61Seric return (EX_SOFTWARE); 1477c579ef51Seric } 147833db8731Seric 1479bf9bc890Seric if (WIFEXITED(st)) 1480c579ef51Seric { 1481bf9bc890Seric /* normal death -- return status */ 1482bf9bc890Seric return (WEXITSTATUS(st)); 1483bf9bc890Seric } 1484bf9bc890Seric 1485bf9bc890Seric /* it died a horrid death */ 1486c9be6216Seric syserr("mailer %s died with signal %o", pv[0], st); 1487c9be6216Seric 1488c9be6216Seric /* log the arguments */ 1489c9be6216Seric if (e->e_xfp != NULL) 1490c9be6216Seric { 1491c9be6216Seric register char **av; 1492c9be6216Seric 1493c9be6216Seric fprintf(e->e_xfp, "Arguments:"); 1494c9be6216Seric for (av = pv; *av != NULL; av++) 1495c9be6216Seric fprintf(e->e_xfp, " %s", *av); 1496c9be6216Seric fprintf(e->e_xfp, "\n"); 1497c9be6216Seric } 1498c9be6216Seric 14995f73204aSeric ExitStat = EX_TEMPFAIL; 15005f73204aSeric return (EX_TEMPFAIL); 1501c579ef51Seric } 1502c579ef51Seric /* 150325a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 150425a99e2eSeric ** 150525a99e2eSeric ** Parameters: 150625a99e2eSeric ** stat -- the status code from the mailer (high byte 150725a99e2eSeric ** only; core dumps must have been taken care of 150825a99e2eSeric ** already). 150981161401Seric ** m -- the mailer info for this mailer. 151081161401Seric ** mci -- the mailer connection info -- can be NULL if the 151181161401Seric ** response is given before the connection is made. 151281161401Seric ** e -- the current envelope. 151325a99e2eSeric ** 151425a99e2eSeric ** Returns: 1515db8841e9Seric ** none. 151625a99e2eSeric ** 151725a99e2eSeric ** Side Effects: 1518c1f9df2cSeric ** Errors may be incremented. 151925a99e2eSeric ** ExitStat may be set. 152025a99e2eSeric */ 152125a99e2eSeric 152281161401Seric giveresponse(stat, m, mci, e) 152325a99e2eSeric int stat; 1524588cad61Seric register MAILER *m; 152581161401Seric register MCI *mci; 1526198d9be0Seric ENVELOPE *e; 152725a99e2eSeric { 15289c16475dSeric register const char *statmsg; 152925a99e2eSeric extern char *SysExMsg[]; 153025a99e2eSeric register int i; 1531d4bd8f0eSbostic extern int N_SysEx; 1532198d9be0Seric char buf[MAXLINE]; 153325a99e2eSeric 153413bbc08cSeric /* 153513bbc08cSeric ** Compute status message from code. 153613bbc08cSeric */ 153713bbc08cSeric 153825a99e2eSeric i = stat - EX__BASE; 1539588cad61Seric if (stat == 0) 15406fe8c3bcSeric { 1541588cad61Seric statmsg = "250 Sent"; 1542ce5531bdSeric if (e->e_statmsg != NULL) 15436fe8c3bcSeric { 1544ce5531bdSeric (void) sprintf(buf, "%s (%s)", statmsg, e->e_statmsg); 15456fe8c3bcSeric statmsg = buf; 15466fe8c3bcSeric } 15476fe8c3bcSeric } 1548588cad61Seric else if (i < 0 || i > N_SysEx) 1549588cad61Seric { 1550588cad61Seric (void) sprintf(buf, "554 unknown mailer error %d", stat); 1551588cad61Seric stat = EX_UNAVAILABLE; 1552588cad61Seric statmsg = buf; 1553588cad61Seric } 1554198d9be0Seric else if (stat == EX_TEMPFAIL) 1555198d9be0Seric { 15567d55540cSeric (void) strcpy(buf, SysExMsg[i] + 1); 1557d4bd8f0eSbostic #ifdef NAMED_BIND 1558f28da541Smiriam if (h_errno == TRY_AGAIN) 15594d50702aSeric statmsg = errstring(h_errno+E_DNSBASE); 1560f28da541Smiriam else 1561d4bd8f0eSbostic #endif 1562f28da541Smiriam { 15638557d168Seric if (errno != 0) 1564d87e85f3Seric statmsg = errstring(errno); 1565d87e85f3Seric else 1566d87e85f3Seric { 1567d87e85f3Seric #ifdef SMTP 1568d87e85f3Seric extern char SmtpError[]; 1569d87e85f3Seric 1570d87e85f3Seric statmsg = SmtpError; 15716c2c3107Seric #else /* SMTP */ 1572d87e85f3Seric statmsg = NULL; 15736c2c3107Seric #endif /* SMTP */ 1574d87e85f3Seric } 1575f28da541Smiriam } 1576d87e85f3Seric if (statmsg != NULL && statmsg[0] != '\0') 1577d87e85f3Seric { 157887c9b3e7Seric (void) strcat(buf, ": "); 1579d87e85f3Seric (void) strcat(buf, statmsg); 15808557d168Seric } 1581198d9be0Seric statmsg = buf; 1582198d9be0Seric } 1583f170942cSeric #ifdef NAMED_BIND 1584f170942cSeric else if (stat == EX_NOHOST && h_errno != 0) 1585f170942cSeric { 15864d50702aSeric statmsg = errstring(h_errno + E_DNSBASE); 1587f170942cSeric (void) sprintf(buf, "%s (%s)", SysExMsg[i], statmsg); 1588f170942cSeric statmsg = buf; 1589f170942cSeric } 1590f170942cSeric #endif 159125a99e2eSeric else 1592d87e85f3Seric { 159325a99e2eSeric statmsg = SysExMsg[i]; 15947d55540cSeric if (*statmsg++ == ':') 15957d55540cSeric { 15967d55540cSeric (void) sprintf(buf, "%s: %s", statmsg, errstring(errno)); 15977d55540cSeric statmsg = buf; 15987d55540cSeric } 1599d87e85f3Seric } 1600588cad61Seric 1601588cad61Seric /* 1602588cad61Seric ** Print the message as appropriate 1603588cad61Seric */ 1604588cad61Seric 1605198d9be0Seric if (stat == EX_OK || stat == EX_TEMPFAIL) 1606e12d03eeSeric message(&statmsg[4], errstring(errno)); 160725a99e2eSeric else 160825a99e2eSeric { 1609c1f9df2cSeric Errors++; 1610e12d03eeSeric usrerr(statmsg, errstring(errno)); 161125a99e2eSeric } 161225a99e2eSeric 161325a99e2eSeric /* 161425a99e2eSeric ** Final cleanup. 161525a99e2eSeric ** Log a record of the transaction. Compute the new 161625a99e2eSeric ** ExitStat -- if we already had an error, stick with 161725a99e2eSeric ** that. 161825a99e2eSeric */ 161925a99e2eSeric 16202f624c86Seric if (LogLevel > ((stat == EX_TEMPFAIL) ? 8 : (stat == EX_OK) ? 7 : 6)) 162181161401Seric logdelivery(m, mci, &statmsg[4], e); 1622eb238f8cSeric 1623eb238f8cSeric if (stat != EX_TEMPFAIL) 1624eb238f8cSeric setstat(stat); 1625198d9be0Seric if (stat != EX_OK) 1626198d9be0Seric { 1627198d9be0Seric if (e->e_message != NULL) 1628198d9be0Seric free(e->e_message); 1629198d9be0Seric e->e_message = newstr(&statmsg[4]); 1630198d9be0Seric } 16318557d168Seric errno = 0; 1632d4bd8f0eSbostic #ifdef NAMED_BIND 1633f28da541Smiriam h_errno = 0; 1634d4bd8f0eSbostic #endif 1635eb238f8cSeric } 1636eb238f8cSeric /* 1637eb238f8cSeric ** LOGDELIVERY -- log the delivery in the system log 1638eb238f8cSeric ** 1639eb238f8cSeric ** Parameters: 164081161401Seric ** m -- the mailer info. Can be NULL for initial queue. 164181161401Seric ** mci -- the mailer connection info -- can be NULL if the 164281161401Seric ** log is occuring when no connection is active. 164381161401Seric ** stat -- the message to print for the status. 164481161401Seric ** e -- the current envelope. 1645eb238f8cSeric ** 1646eb238f8cSeric ** Returns: 1647eb238f8cSeric ** none 1648eb238f8cSeric ** 1649eb238f8cSeric ** Side Effects: 1650eb238f8cSeric ** none 1651eb238f8cSeric */ 1652eb238f8cSeric 165381161401Seric logdelivery(m, mci, stat, e) 165481161401Seric MAILER *m; 165581161401Seric register MCI *mci; 1656eb238f8cSeric char *stat; 1657b31e7f2bSeric register ENVELOPE *e; 16585cf56be3Seric { 1659eb238f8cSeric # ifdef LOG 1660d6acf3eeSeric char buf[512]; 16619507d1f9Seric 166248ed5d33Seric (void) sprintf(buf, "delay=%s", pintvl(curtime() - e->e_ctime, TRUE)); 166381161401Seric 166448ed5d33Seric if (m != NULL) 166571ff6caaSeric { 166648ed5d33Seric (void) strcat(buf, ", mailer="); 166748ed5d33Seric (void) strcat(buf, m->m_name); 166871ff6caaSeric } 166948ed5d33Seric 167048ed5d33Seric if (mci != NULL && mci->mci_host != NULL) 167171ff6caaSeric { 167271ff6caaSeric # ifdef DAEMON 1673e2f2f828Seric extern SOCKADDR CurHostAddr; 167448ed5d33Seric # endif 167571ff6caaSeric 167648ed5d33Seric (void) strcat(buf, ", relay="); 167748ed5d33Seric (void) strcat(buf, mci->mci_host); 167848ed5d33Seric 167948ed5d33Seric # ifdef DAEMON 168048ed5d33Seric (void) strcat(buf, " ("); 1681e2f2f828Seric (void) strcat(buf, anynet_ntoa(&CurHostAddr)); 168248ed5d33Seric (void) strcat(buf, ")"); 168371ff6caaSeric # endif 168471ff6caaSeric } 16859507d1f9Seric else 168648ed5d33Seric { 168748ed5d33Seric char *p = macvalue('h', e); 16889507d1f9Seric 168948ed5d33Seric if (p != NULL && p[0] != '\0') 169048ed5d33Seric { 169148ed5d33Seric (void) strcat(buf, ", relay="); 169248ed5d33Seric (void) strcat(buf, p); 169348ed5d33Seric } 169448ed5d33Seric } 1695d6acf3eeSeric 1696d6acf3eeSeric syslog(LOG_INFO, "%s: to=%s, %s, stat=%s", 1697d6acf3eeSeric e->e_id, e->e_to, buf, stat); 16986c2c3107Seric # endif /* LOG */ 169925a99e2eSeric } 170025a99e2eSeric /* 170151552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 170225a99e2eSeric ** 170351552439Seric ** This can be made an arbitrary message separator by changing $l 170451552439Seric ** 17059b6c17a6Seric ** One of the ugliest hacks seen by human eyes is contained herein: 17069b6c17a6Seric ** UUCP wants those stupid "remote from <host>" lines. Why oh why 17079b6c17a6Seric ** does a well-meaning programmer such as myself have to deal with 17089b6c17a6Seric ** this kind of antique garbage???? 170925a99e2eSeric ** 171025a99e2eSeric ** Parameters: 171151552439Seric ** fp -- the file to output to. 171251552439Seric ** m -- the mailer describing this entry. 171325a99e2eSeric ** 171425a99e2eSeric ** Returns: 171551552439Seric ** none 171625a99e2eSeric ** 171725a99e2eSeric ** Side Effects: 171851552439Seric ** outputs some text to fp. 171925a99e2eSeric */ 172025a99e2eSeric 1721b31e7f2bSeric putfromline(fp, m, e) 172251552439Seric register FILE *fp; 172351552439Seric register MAILER *m; 1724b31e7f2bSeric ENVELOPE *e; 172525a99e2eSeric { 17262bc47524Seric char *template = "\201l\n"; 172751552439Seric char buf[MAXLINE]; 172825a99e2eSeric 172957fc6f17Seric if (bitnset(M_NHDR, m->m_flags)) 173051552439Seric return; 173113bbc08cSeric 17322c7e1b8dSeric # ifdef UGLYUUCP 173357fc6f17Seric if (bitnset(M_UGLYUUCP, m->m_flags)) 173474b6e67bSeric { 1735ea09d6edSeric char *bang; 1736ea09d6edSeric char xbuf[MAXLINE]; 173774b6e67bSeric 1738ee4b0922Seric expand("\201g", buf, &buf[sizeof buf - 1], e); 17396c2c3107Seric bang = strchr(buf, '!'); 174074b6e67bSeric if (bang == NULL) 174134fcca25Seric { 174234fcca25Seric errno = 0; 174334fcca25Seric syserr("554 No ! in UUCP From address! (%s given)", buf); 174434fcca25Seric } 174574b6e67bSeric else 1746588cad61Seric { 1747ea09d6edSeric *bang++ = '\0'; 17482bc47524Seric (void) sprintf(xbuf, "From %s \201d remote from %s\n", bang, buf); 1749ea09d6edSeric template = xbuf; 175074b6e67bSeric } 1751588cad61Seric } 17526c2c3107Seric # endif /* UGLYUUCP */ 1753b31e7f2bSeric expand(template, buf, &buf[sizeof buf - 1], e); 175477b52738Seric putline(buf, fp, m); 1755bc6e2962Seric } 1756bc6e2962Seric /* 175751552439Seric ** PUTBODY -- put the body of a message. 175851552439Seric ** 175951552439Seric ** Parameters: 176051552439Seric ** fp -- file to output onto. 176177b52738Seric ** m -- a mailer descriptor to control output format. 17629a6a5f55Seric ** e -- the envelope to put out. 176303c02fdeSeric ** separator -- if non-NULL, a message separator that must 176403c02fdeSeric ** not be permitted in the resulting message. 176551552439Seric ** 176651552439Seric ** Returns: 176751552439Seric ** none. 176851552439Seric ** 176951552439Seric ** Side Effects: 177051552439Seric ** The message is written onto fp. 177151552439Seric */ 177251552439Seric 177303c02fdeSeric putbody(fp, m, e, separator) 177451552439Seric FILE *fp; 1775588cad61Seric MAILER *m; 17769a6a5f55Seric register ENVELOPE *e; 177703c02fdeSeric char *separator; 177851552439Seric { 177977b52738Seric char buf[MAXLINE]; 178051552439Seric 178151552439Seric /* 178251552439Seric ** Output the body of the message 178351552439Seric */ 178451552439Seric 17859a6a5f55Seric if (e->e_dfp == NULL) 178651552439Seric { 17879a6a5f55Seric if (e->e_df != NULL) 17889a6a5f55Seric { 17899a6a5f55Seric e->e_dfp = fopen(e->e_df, "r"); 17909a6a5f55Seric if (e->e_dfp == NULL) 17918f9146b0Srick syserr("putbody: Cannot open %s for %s from %s", 1792e76a6a8fSeric e->e_df, e->e_to, e->e_from.q_paddr); 17939a6a5f55Seric } 17949a6a5f55Seric else 179577b52738Seric putline("<<< No Message Collected >>>", fp, m); 17969a6a5f55Seric } 17979a6a5f55Seric if (e->e_dfp != NULL) 17989a6a5f55Seric { 17999a6a5f55Seric rewind(e->e_dfp); 180077b52738Seric while (!ferror(fp) && fgets(buf, sizeof buf, e->e_dfp) != NULL) 180124fc8aeeSeric { 180224fc8aeeSeric if (buf[0] == 'F' && bitnset(M_ESCFROM, m->m_flags) && 1803d6fa2b58Sbostic strncmp(buf, "From ", 5) == 0) 18043462ad9eSeric (void) putc('>', fp); 180503c02fdeSeric if (buf[0] == '-' && buf[1] == '-' && separator != NULL) 180603c02fdeSeric { 180703c02fdeSeric /* possible separator */ 180803c02fdeSeric int sl = strlen(separator); 180903c02fdeSeric 181003c02fdeSeric if (strncmp(&buf[2], separator, sl) == 0) 181103c02fdeSeric (void) putc(' ', fp); 181203c02fdeSeric } 181377b52738Seric putline(buf, fp, m); 181424fc8aeeSeric } 181551552439Seric 18169a6a5f55Seric if (ferror(e->e_dfp)) 181751552439Seric { 181851552439Seric syserr("putbody: read error"); 181951552439Seric ExitStat = EX_IOERR; 182051552439Seric } 182151552439Seric } 182251552439Seric 18230890ba1fSeric /* some mailers want extra blank line at end of message */ 18240890ba1fSeric if (bitnset(M_BLANKEND, m->m_flags) && buf[0] != '\0' && buf[0] != '\n') 18250890ba1fSeric putline("", fp, m); 18260890ba1fSeric 182751552439Seric (void) fflush(fp); 182851552439Seric if (ferror(fp) && errno != EPIPE) 182951552439Seric { 183051552439Seric syserr("putbody: write error"); 183151552439Seric ExitStat = EX_IOERR; 183251552439Seric } 183351552439Seric errno = 0; 183425a99e2eSeric } 183525a99e2eSeric /* 183625a99e2eSeric ** MAILFILE -- Send a message to a file. 183725a99e2eSeric ** 1838f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1839f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1840f129ec7dSeric ** rather than the real user. Obviously, this only works if 1841f129ec7dSeric ** sendmail runs as root. 1842f129ec7dSeric ** 1843588cad61Seric ** This could be done as a subordinate mailer, except that it 1844588cad61Seric ** is used implicitly to save messages in ~/dead.letter. We 1845588cad61Seric ** view this as being sufficiently important as to include it 1846588cad61Seric ** here. For example, if the system is dying, we shouldn't have 1847588cad61Seric ** to create another process plus some pipes to save the message. 1848588cad61Seric ** 184925a99e2eSeric ** Parameters: 185025a99e2eSeric ** filename -- the name of the file to send to. 18516259796dSeric ** ctladdr -- the controlling address header -- includes 18526259796dSeric ** the userid/groupid to be when sending. 185325a99e2eSeric ** 185425a99e2eSeric ** Returns: 185525a99e2eSeric ** The exit code associated with the operation. 185625a99e2eSeric ** 185725a99e2eSeric ** Side Effects: 185825a99e2eSeric ** none. 185925a99e2eSeric */ 186025a99e2eSeric 1861b31e7f2bSeric mailfile(filename, ctladdr, e) 186225a99e2eSeric char *filename; 18636259796dSeric ADDRESS *ctladdr; 1864b31e7f2bSeric register ENVELOPE *e; 186525a99e2eSeric { 186625a99e2eSeric register FILE *f; 186732d19d43Seric register int pid; 186815d084d5Seric int mode; 186925a99e2eSeric 1870671745f3Seric if (tTd(11, 1)) 1871671745f3Seric { 1872671745f3Seric printf("mailfile %s\n ctladdr=", filename); 1873671745f3Seric printaddr(ctladdr, FALSE); 1874671745f3Seric } 1875671745f3Seric 1876f170942cSeric if (e->e_xfp != NULL) 1877f170942cSeric fflush(e->e_xfp); 1878f170942cSeric 187932d19d43Seric /* 188032d19d43Seric ** Fork so we can change permissions here. 188132d19d43Seric ** Note that we MUST use fork, not vfork, because of 188232d19d43Seric ** the complications of calling subroutines, etc. 188332d19d43Seric */ 188432d19d43Seric 188532d19d43Seric DOFORK(fork); 188632d19d43Seric 188732d19d43Seric if (pid < 0) 188832d19d43Seric return (EX_OSERR); 188932d19d43Seric else if (pid == 0) 189032d19d43Seric { 189132d19d43Seric /* child -- actually write to file */ 1892f129ec7dSeric struct stat stb; 1893f129ec7dSeric 18942b9178d3Seric (void) setsignal(SIGINT, SIG_DFL); 18952b9178d3Seric (void) setsignal(SIGHUP, SIG_DFL); 18962b9178d3Seric (void) setsignal(SIGTERM, SIG_DFL); 18973462ad9eSeric (void) umask(OldUmask); 189895f16dc0Seric 1899f129ec7dSeric if (stat(filename, &stb) < 0) 19003a98e7eaSeric stb.st_mode = FileMode; 190115d084d5Seric mode = stb.st_mode; 190295f16dc0Seric 190395f16dc0Seric /* limit the errors to those actually caused in the child */ 190495f16dc0Seric errno = 0; 190595f16dc0Seric ExitStat = EX_OK; 190695f16dc0Seric 1907f129ec7dSeric if (bitset(0111, stb.st_mode)) 1908f129ec7dSeric exit(EX_CANTCREAT); 190903827b5fSeric if (ctladdr == NULL) 19108f9146b0Srick ctladdr = &e->e_from; 191115d084d5Seric else 191215d084d5Seric { 191315d084d5Seric /* ignore setuid and setgid bits */ 191415d084d5Seric mode &= ~(S_ISGID|S_ISUID); 191515d084d5Seric } 191615d084d5Seric 19178f9146b0Srick /* we have to open the dfile BEFORE setuid */ 19188f9146b0Srick if (e->e_dfp == NULL && e->e_df != NULL) 19198f9146b0Srick { 19208f9146b0Srick e->e_dfp = fopen(e->e_df, "r"); 192195f16dc0Seric if (e->e_dfp == NULL) 192295f16dc0Seric { 19238f9146b0Srick syserr("mailfile: Cannot open %s for %s from %s", 1924e76a6a8fSeric e->e_df, e->e_to, e->e_from.q_paddr); 19258f9146b0Srick } 19268f9146b0Srick } 19278f9146b0Srick 192815d084d5Seric if (!bitset(S_ISGID, mode) || setgid(stb.st_gid) < 0) 1929e36b99e2Seric { 193095f16dc0Seric if (ctladdr->q_uid == 0) 193195f16dc0Seric { 1932898a126bSbostic (void) initgroups(DefUser, DefGid); 193395f16dc0Seric } 193495f16dc0Seric else 193595f16dc0Seric { 1936898a126bSbostic (void) initgroups(ctladdr->q_ruser ? 1937898a126bSbostic ctladdr->q_ruser : ctladdr->q_user, 1938898a126bSbostic ctladdr->q_gid); 1939898a126bSbostic } 1940e36b99e2Seric } 194115d084d5Seric if (!bitset(S_ISUID, mode) || setuid(stb.st_uid) < 0) 1942e36b99e2Seric { 1943e36b99e2Seric if (ctladdr->q_uid == 0) 1944e36b99e2Seric (void) setuid(DefUid); 1945e36b99e2Seric else 19466259796dSeric (void) setuid(ctladdr->q_uid); 1947e36b99e2Seric } 194895f16dc0Seric FileName = filename; 194995f16dc0Seric LineNumber = 0; 19503a98e7eaSeric f = dfopen(filename, O_WRONLY|O_CREAT|O_APPEND, FileMode); 195125a99e2eSeric if (f == NULL) 195295f16dc0Seric { 1953b6a0de9dSeric message("554 cannot open: %s", errstring(errno)); 195432d19d43Seric exit(EX_CANTCREAT); 195595f16dc0Seric } 195625a99e2eSeric 19570331ce05Seric putfromline(f, FileMailer, e); 19580331ce05Seric (*e->e_puthdr)(f, FileMailer, e); 19590331ce05Seric putline("\n", f, FileMailer); 196003c02fdeSeric (*e->e_putbody)(f, FileMailer, e, NULL); 19610331ce05Seric putline("\n", f, FileMailer); 196295f16dc0Seric if (ferror(f)) 196395f16dc0Seric { 1964b6a0de9dSeric message("451 I/O error: %s", errstring(errno)); 196595f16dc0Seric setstat(EX_IOERR); 196695f16dc0Seric } 1967ee4b0922Seric (void) xfclose(f, "mailfile", filename); 196832d19d43Seric (void) fflush(stdout); 1969e36b99e2Seric 197027628d59Seric /* reset ISUID & ISGID bits for paranoid systems */ 1971c77d1c25Seric (void) chmod(filename, (int) stb.st_mode); 197295f16dc0Seric exit(ExitStat); 197313bbc08cSeric /*NOTREACHED*/ 197432d19d43Seric } 197532d19d43Seric else 197632d19d43Seric { 197732d19d43Seric /* parent -- wait for exit status */ 1978588cad61Seric int st; 197932d19d43Seric 1980588cad61Seric st = waitfor(pid); 1981bf9bc890Seric if (WIFEXITED(st)) 1982bf9bc890Seric return (WEXITSTATUS(st)); 1983588cad61Seric else 1984b6a0de9dSeric { 1985b6a0de9dSeric syserr("child died on signal %d", st); 1986bf9bc890Seric return (EX_UNAVAILABLE); 1987b6a0de9dSeric } 19888f9146b0Srick /*NOTREACHED*/ 198932d19d43Seric } 199025a99e2eSeric } 1991ea4dc939Seric /* 1992e103b48fSeric ** HOSTSIGNATURE -- return the "signature" for a host. 1993e103b48fSeric ** 1994e103b48fSeric ** The signature describes how we are going to send this -- it 1995e103b48fSeric ** can be just the hostname (for non-Internet hosts) or can be 1996e103b48fSeric ** an ordered list of MX hosts. 1997e103b48fSeric ** 1998e103b48fSeric ** Parameters: 1999e103b48fSeric ** m -- the mailer describing this host. 2000e103b48fSeric ** host -- the host name. 2001e103b48fSeric ** e -- the current envelope. 2002e103b48fSeric ** 2003e103b48fSeric ** Returns: 2004e103b48fSeric ** The signature for this host. 2005e103b48fSeric ** 2006e103b48fSeric ** Side Effects: 2007e103b48fSeric ** Can tweak the symbol table. 2008e103b48fSeric */ 2009e103b48fSeric 2010e103b48fSeric char * 2011e103b48fSeric hostsignature(m, host, e) 2012e103b48fSeric register MAILER *m; 2013e103b48fSeric char *host; 2014e103b48fSeric ENVELOPE *e; 2015e103b48fSeric { 2016e103b48fSeric register char *p; 2017e103b48fSeric register STAB *s; 2018e103b48fSeric int i; 2019e103b48fSeric int len; 2020e103b48fSeric #ifdef NAMED_BIND 2021e103b48fSeric int nmx; 2022e103b48fSeric auto int rcode; 2023bafdc4e5Seric char *hp; 2024bafdc4e5Seric char *endp; 2025516782b4Seric int oldoptions; 2026e103b48fSeric char *mxhosts[MAXMXHOSTS + 1]; 2027e103b48fSeric #endif 2028e103b48fSeric 2029e103b48fSeric /* 2030e103b48fSeric ** Check to see if this uses IPC -- if not, it can't have MX records. 2031e103b48fSeric */ 2032e103b48fSeric 2033e103b48fSeric p = m->m_mailer; 2034e103b48fSeric if (strcmp(p, "[IPC]") != 0 && strcmp(p, "[TCP]") != 0) 2035e103b48fSeric { 2036e103b48fSeric /* just an ordinary mailer */ 2037e103b48fSeric return host; 2038e103b48fSeric } 2039e103b48fSeric 2040e103b48fSeric /* 2041e103b48fSeric ** If it is a numeric address, just return it. 2042e103b48fSeric */ 2043e103b48fSeric 2044e103b48fSeric if (host[0] == '[') 2045e103b48fSeric return host; 2046e103b48fSeric 2047e103b48fSeric /* 2048e103b48fSeric ** Look it up in the symbol table. 2049e103b48fSeric */ 2050e103b48fSeric 2051e103b48fSeric s = stab(host, ST_HOSTSIG, ST_ENTER); 2052e103b48fSeric if (s->s_hostsig != NULL) 2053e103b48fSeric return s->s_hostsig; 2054e103b48fSeric 2055e103b48fSeric /* 2056e103b48fSeric ** Not already there -- create a signature. 2057e103b48fSeric */ 2058e103b48fSeric 2059e103b48fSeric #ifdef NAMED_BIND 2060516782b4Seric if (ConfigLevel < 2) 2061516782b4Seric { 2062516782b4Seric oldoptions = _res.options; 2063516782b4Seric _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 2064516782b4Seric } 2065516782b4Seric 2066bafdc4e5Seric for (hp = host; hp != NULL; hp = endp) 2067bafdc4e5Seric { 2068bafdc4e5Seric endp = strchr(hp, ':'); 2069bafdc4e5Seric if (endp != NULL) 2070bafdc4e5Seric *endp = '\0'; 2071bafdc4e5Seric 20727bf809e6Seric nmx = getmxrr(hp, mxhosts, TRUE, &rcode); 20737d55540cSeric 2074e103b48fSeric if (nmx <= 0) 2075e103b48fSeric { 2076e103b48fSeric register MCI *mci; 2077e103b48fSeric extern int errno; 2078e103b48fSeric 2079e103b48fSeric /* update the connection info for this host */ 2080bafdc4e5Seric mci = mci_get(hp, m); 2081e103b48fSeric mci->mci_exitstat = rcode; 2082e103b48fSeric mci->mci_errno = errno; 2083f170942cSeric #ifdef NAMED_BIND 2084f170942cSeric mci->mci_herrno = h_errno; 2085f170942cSeric #endif 2086e103b48fSeric 2087e103b48fSeric /* and return the original host name as the signature */ 2088bafdc4e5Seric nmx = 1; 2089bafdc4e5Seric mxhosts[0] = hp; 2090e103b48fSeric } 2091e103b48fSeric 2092e103b48fSeric len = 0; 2093e103b48fSeric for (i = 0; i < nmx; i++) 2094e103b48fSeric { 2095e103b48fSeric len += strlen(mxhosts[i]) + 1; 2096e103b48fSeric } 2097bafdc4e5Seric if (s->s_hostsig != NULL) 2098bafdc4e5Seric len += strlen(s->s_hostsig) + 1; 2099bafdc4e5Seric p = xalloc(len); 2100bafdc4e5Seric if (s->s_hostsig != NULL) 2101bafdc4e5Seric { 2102bafdc4e5Seric (void) strcpy(p, s->s_hostsig); 2103bafdc4e5Seric free(s->s_hostsig); 2104bafdc4e5Seric s->s_hostsig = p; 2105bafdc4e5Seric p += strlen(p); 2106bafdc4e5Seric *p++ = ':'; 2107bafdc4e5Seric } 2108bafdc4e5Seric else 2109bafdc4e5Seric s->s_hostsig = p; 2110e103b48fSeric for (i = 0; i < nmx; i++) 2111e103b48fSeric { 2112e103b48fSeric if (i != 0) 2113e103b48fSeric *p++ = ':'; 2114e103b48fSeric strcpy(p, mxhosts[i]); 2115e103b48fSeric p += strlen(p); 2116e103b48fSeric } 2117bafdc4e5Seric if (endp != NULL) 2118bafdc4e5Seric *endp++ = ':'; 2119bafdc4e5Seric } 2120e103b48fSeric makelower(s->s_hostsig); 2121516782b4Seric if (ConfigLevel < 2) 2122516782b4Seric _res.options = oldoptions; 2123e103b48fSeric #else 2124e103b48fSeric /* not using BIND -- the signature is just the host name */ 2125e103b48fSeric s->s_hostsig = host; 2126e103b48fSeric #endif 2127e103b48fSeric if (tTd(17, 1)) 2128e103b48fSeric printf("hostsignature(%s) = %s\n", host, s->s_hostsig); 2129e103b48fSeric return s->s_hostsig; 2130e103b48fSeric } 2131