14227346bSdist /* 20942ea6aSbostic * Copyright (c) 1983 Eric P. Allman 3e70a7521Sbostic * Copyright (c) 1988 Regents of the University of California. 4e70a7521Sbostic * All rights reserved. 5e70a7521Sbostic * 63bc94712Sbostic * %sccs.include.redist.c% 74227346bSdist */ 84227346bSdist 94227346bSdist #ifndef lint 10*516782b4Seric static char sccsid[] = "@(#)deliver.c 6.63 (Berkeley) 04/17/93"; 11e70a7521Sbostic #endif /* not lint */ 124227346bSdist 13fcde9cc8Sbostic #include "sendmail.h" 14a8c080f0Seric #include <signal.h> 15c77d1c25Seric #include <sys/stat.h> 16f28da541Smiriam #include <netdb.h> 17911693bfSbostic #include <errno.h> 18134746fbSeric #ifdef NAMED_BIND 19912a731aSbostic #include <arpa/nameser.h> 20912a731aSbostic #include <resolv.h> 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 529c9e68d9Seric /* determine actual delivery mode */ 539c9e68d9Seric if (mode == SM_DEFAULT) 549c9e68d9Seric { 559c9e68d9Seric extern bool shouldqueue(); 569c9e68d9Seric 579c9e68d9Seric mode = e->e_sendmode; 589c9e68d9Seric if (mode != SM_VERIFY && 599c9e68d9Seric shouldqueue(e->e_msgpriority, e->e_ctime)) 609c9e68d9Seric mode = SM_QUEUE; 616103d9b4Seric announcequeueup = mode == SM_QUEUE; 629c9e68d9Seric } 636103d9b4Seric else 646103d9b4Seric announcequeueup = FALSE; 659c9e68d9Seric 669c9e68d9Seric if (tTd(13, 1)) 679c9e68d9Seric { 689c9e68d9Seric printf("\nSENDALL: mode %c, e_from ", mode); 699c9e68d9Seric printaddr(&e->e_from, FALSE); 709c9e68d9Seric printf("sendqueue:\n"); 719c9e68d9Seric printaddr(e->e_sendqueue, TRUE); 729c9e68d9Seric } 739c9e68d9Seric 749c9e68d9Seric /* 759c9e68d9Seric ** Do any preprocessing necessary for the mode we are running. 769c9e68d9Seric ** Check to make sure the hop count is reasonable. 779c9e68d9Seric ** Delete sends to the sender in mailing lists. 789c9e68d9Seric */ 799c9e68d9Seric 809c9e68d9Seric CurEnv = e; 819c9e68d9Seric 829c9e68d9Seric if (e->e_hopcount > MaxHopCount) 839c9e68d9Seric { 849c9e68d9Seric errno = 0; 859c9e68d9Seric syserr("554 too many hops %d (%d max): from %s, to %s", 869c9e68d9Seric e->e_hopcount, MaxHopCount, e->e_from.q_paddr, 879c9e68d9Seric e->e_sendqueue->q_paddr); 889c9e68d9Seric return; 899c9e68d9Seric } 909c9e68d9Seric 919c9e68d9Seric if (!MeToo) 929c9e68d9Seric { 939c9e68d9Seric extern ADDRESS *recipient(); 949c9e68d9Seric 959c9e68d9Seric if (tTd(13, 5)) 969c9e68d9Seric { 979c9e68d9Seric printf("sendall: QDONTSEND "); 989c9e68d9Seric printaddr(&e->e_from, FALSE); 999c9e68d9Seric } 1009c9e68d9Seric e->e_from.q_flags |= QDONTSEND; 1019c9e68d9Seric (void) recipient(&e->e_from, &e->e_sendqueue, e); 1029c9e68d9Seric } 1039c9e68d9Seric 104ce5531bdSeric /* 105ce5531bdSeric ** Handle alias owners. 106ce5531bdSeric ** 107ce5531bdSeric ** We scan up the q_alias chain looking for owners. 108ce5531bdSeric ** We discard owners that are the same as the return path. 109ce5531bdSeric */ 110ce5531bdSeric 111ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 112ce5531bdSeric { 113ce5531bdSeric register struct address *a; 114ce5531bdSeric 115ce5531bdSeric for (a = q; a != NULL && a->q_owner == NULL; a = a->q_alias) 116ce5531bdSeric continue; 117ce5531bdSeric if (a != NULL) 118ce5531bdSeric q->q_owner = a->q_owner; 119ce5531bdSeric 120ce5531bdSeric if (q->q_owner != NULL && 121ce5531bdSeric !bitset(QDONTSEND, q->q_flags) && 122ce5531bdSeric strcmp(q->q_owner, e->e_from.q_paddr) == 0) 123ce5531bdSeric q->q_owner = NULL; 124ce5531bdSeric } 125ce5531bdSeric 126ce5531bdSeric owner = ""; 127ce5531bdSeric otherowners = 1; 128ce5531bdSeric while (owner != NULL && otherowners > 0) 129ce5531bdSeric { 130ce5531bdSeric owner = NULL; 131ce5531bdSeric otherowners = 0; 132ce5531bdSeric 133ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 134ce5531bdSeric { 135ce5531bdSeric if (bitset(QDONTSEND, q->q_flags)) 136ce5531bdSeric continue; 137ce5531bdSeric 138ce5531bdSeric if (q->q_owner != NULL) 139ce5531bdSeric { 140ce5531bdSeric if (owner == NULL) 141ce5531bdSeric owner = q->q_owner; 142ce5531bdSeric else if (owner != q->q_owner) 143ce5531bdSeric { 144ce5531bdSeric if (strcmp(owner, q->q_owner) == 0) 145ce5531bdSeric { 146ce5531bdSeric /* make future comparisons cheap */ 147ce5531bdSeric q->q_owner = owner; 148ce5531bdSeric } 149ce5531bdSeric else 150ce5531bdSeric { 151ce5531bdSeric otherowners++; 152ce5531bdSeric } 153ce5531bdSeric owner = q->q_owner; 154ce5531bdSeric } 155ce5531bdSeric } 156ce5531bdSeric else 157ce5531bdSeric { 158ce5531bdSeric otherowners++; 159ce5531bdSeric } 160ce5531bdSeric } 161ce5531bdSeric 162ce5531bdSeric if (owner != NULL && otherowners > 0) 163ce5531bdSeric { 164ce5531bdSeric extern HDR *copyheader(); 165ce5531bdSeric extern ADDRESS *copyqueue(); 166ce5531bdSeric 167ce5531bdSeric /* 168ce5531bdSeric ** Split this envelope into two. 169ce5531bdSeric */ 170ce5531bdSeric 171ce5531bdSeric ee = (ENVELOPE *) xalloc(sizeof(ENVELOPE)); 172ce5531bdSeric *ee = *e; 173ce5531bdSeric ee->e_id = NULL; 174ce5531bdSeric (void) queuename(ee, '\0'); 175ce5531bdSeric 176ce5531bdSeric if (tTd(13, 1)) 177ce5531bdSeric printf("sendall: split %s into %s\n", 178ce5531bdSeric e->e_id, ee->e_id); 179ce5531bdSeric 180ce5531bdSeric ee->e_header = copyheader(e->e_header); 181ce5531bdSeric ee->e_sendqueue = copyqueue(e->e_sendqueue); 182ce5531bdSeric ee->e_errorqueue = copyqueue(e->e_errorqueue); 183ce5531bdSeric ee->e_flags = e->e_flags & ~(EF_INQUEUE|EF_CLRQUEUE|EF_FATALERRS); 184ce5531bdSeric setsender(owner, ee, NULL, TRUE); 185ce5531bdSeric if (tTd(13, 5)) 186ce5531bdSeric { 187ce5531bdSeric printf("sendall(split): QDONTSEND "); 188ce5531bdSeric printaddr(&ee->e_from, FALSE); 189ce5531bdSeric } 190ce5531bdSeric ee->e_from.q_flags |= QDONTSEND; 191ce5531bdSeric ee->e_dfp = NULL; 192ce5531bdSeric ee->e_xfp = NULL; 193ce5531bdSeric ee->e_lockfp = NULL; 194ce5531bdSeric ee->e_df = NULL; 195ce5531bdSeric ee->e_errormode = EM_MAIL; 196ce5531bdSeric ee->e_sibling = splitenv; 197ce5531bdSeric splitenv = ee; 198ce5531bdSeric 199ce5531bdSeric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 200ce5531bdSeric if (q->q_owner == owner) 201ce5531bdSeric q->q_flags |= QDONTSEND; 202ce5531bdSeric for (q = ee->e_sendqueue; q != NULL; q = q->q_next) 203ce5531bdSeric if (q->q_owner != owner) 204ce5531bdSeric q->q_flags |= QDONTSEND; 205ce5531bdSeric 206ce5531bdSeric if (e->e_df != NULL && mode != SM_VERIFY) 207ce5531bdSeric { 208ce5531bdSeric ee->e_dfp = NULL; 209ce5531bdSeric ee->e_df = newstr(queuename(ee, 'd')); 210ce5531bdSeric if (link(e->e_df, ee->e_df) < 0) 211ce5531bdSeric { 212ce5531bdSeric syserr("sendall: link(%s, %s)", 213ce5531bdSeric e->e_df, ee->e_df); 214ce5531bdSeric } 215ce5531bdSeric } 216ce5531bdSeric 217ce5531bdSeric if (mode != SM_VERIFY) 218ce5531bdSeric openxscript(ee); 219ce5531bdSeric #ifdef LOG 220ce5531bdSeric if (LogLevel > 4) 221ce5531bdSeric syslog(LOG_INFO, "%s: clone %s", 222ce5531bdSeric ee->e_id, e->e_id); 223ce5531bdSeric #endif 224ce5531bdSeric } 225ce5531bdSeric } 226ce5531bdSeric 227ce5531bdSeric if (owner != NULL) 228ce5531bdSeric { 229ce5531bdSeric setsender(owner, e, NULL, TRUE); 230ce5531bdSeric if (tTd(13, 5)) 231ce5531bdSeric { 232ce5531bdSeric printf("sendall(owner): QDONTSEND "); 233ce5531bdSeric printaddr(&e->e_from, FALSE); 234ce5531bdSeric } 235ce5531bdSeric e->e_from.q_flags |= QDONTSEND; 236ce5531bdSeric e->e_errormode = EM_MAIL; 237ce5531bdSeric } 238ce5531bdSeric 239c1ac89b1Seric # ifdef QUEUE 240c1ac89b1Seric if ((mode == SM_QUEUE || mode == SM_FORK || 241c1ac89b1Seric (mode != SM_VERIFY && SuperSafe)) && 242c1ac89b1Seric !bitset(EF_INQUEUE, e->e_flags)) 243c1ac89b1Seric { 244c1ac89b1Seric /* be sure everything is instantiated in the queue */ 2456103d9b4Seric queueup(e, TRUE, announcequeueup); 246ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 2476103d9b4Seric queueup(ee, TRUE, announcequeueup); 248c1ac89b1Seric } 249c1ac89b1Seric #endif /* QUEUE */ 250c1ac89b1Seric 251ce5531bdSeric if (splitenv != NULL) 252ce5531bdSeric { 253ce5531bdSeric if (tTd(13, 1)) 254ce5531bdSeric { 255ce5531bdSeric printf("\nsendall: Split queue; remaining queue:\n"); 256ce5531bdSeric printaddr(e->e_sendqueue, TRUE); 257ce5531bdSeric } 258ce5531bdSeric 259ce5531bdSeric for (ee = splitenv; ee != NULL; ee = ee->e_sibling) 260ce5531bdSeric { 261ce5531bdSeric CurEnv = ee; 262ce5531bdSeric sendenvelope(ee, mode); 263ce5531bdSeric } 264ce5531bdSeric 265ce5531bdSeric CurEnv = e; 266ce5531bdSeric } 267ce5531bdSeric sendenvelope(e, mode); 268ce5531bdSeric 269ce5531bdSeric for (; splitenv != NULL; splitenv = splitenv->e_sibling) 270ce5531bdSeric dropenvelope(splitenv); 271ce5531bdSeric } 272ce5531bdSeric 273ce5531bdSeric sendenvelope(e, mode) 274ce5531bdSeric register ENVELOPE *e; 275ce5531bdSeric char mode; 276ce5531bdSeric { 277ce5531bdSeric bool oldverbose; 278ce5531bdSeric int pid; 279ce5531bdSeric register ADDRESS *q; 280ce5531bdSeric #ifdef LOCKF 281ce5531bdSeric struct flock lfd; 282ce5531bdSeric #endif 283ce5531bdSeric 284ce5531bdSeric oldverbose = Verbose; 285c1ac89b1Seric switch (mode) 286c1ac89b1Seric { 287c1ac89b1Seric case SM_VERIFY: 288c1ac89b1Seric Verbose = TRUE; 289c1ac89b1Seric break; 290c1ac89b1Seric 291c1ac89b1Seric case SM_QUEUE: 292c1ac89b1Seric queueonly: 293c1ac89b1Seric e->e_flags |= EF_INQUEUE|EF_KEEPQUEUE; 294c1ac89b1Seric return; 295c1ac89b1Seric 296c1ac89b1Seric case SM_FORK: 297c1ac89b1Seric if (e->e_xfp != NULL) 298c1ac89b1Seric (void) fflush(e->e_xfp); 299c1ac89b1Seric 300c1ac89b1Seric # ifdef LOCKF 301c1ac89b1Seric /* 302c1ac89b1Seric ** Since lockf has the interesting semantic that the 303c1ac89b1Seric ** lock is lost when we fork, we have to risk losing 304c1ac89b1Seric ** the lock here by closing before the fork, and then 305c1ac89b1Seric ** trying to get it back in the child. 306c1ac89b1Seric */ 307c1ac89b1Seric 308c1ac89b1Seric if (e->e_lockfp != NULL) 309c1ac89b1Seric { 310c1ac89b1Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 311c1ac89b1Seric e->e_lockfp = NULL; 312c1ac89b1Seric } 313c1ac89b1Seric # endif /* LOCKF */ 314c1ac89b1Seric 315c1ac89b1Seric pid = fork(); 316c1ac89b1Seric if (pid < 0) 317c1ac89b1Seric { 318c1ac89b1Seric goto queueonly; 319c1ac89b1Seric } 320c1ac89b1Seric else if (pid > 0) 321c1ac89b1Seric { 322c1ac89b1Seric /* be sure we leave the temp files to our child */ 323c1ac89b1Seric e->e_id = e->e_df = NULL; 324c1ac89b1Seric # ifndef LOCKF 325c1ac89b1Seric if (e->e_lockfp != NULL) 326c1ac89b1Seric { 327c1ac89b1Seric (void) xfclose(e->e_lockfp, "sendenvelope", "lockfp"); 328c1ac89b1Seric e->e_lockfp = NULL; 329c1ac89b1Seric } 330c1ac89b1Seric # endif 331c1ac89b1Seric 332c1ac89b1Seric /* close any random open files in the envelope */ 333c1ac89b1Seric if (e->e_dfp != NULL) 334c1ac89b1Seric { 335c1ac89b1Seric (void) xfclose(e->e_dfp, "sendenvelope", "dfp"); 336c1ac89b1Seric e->e_dfp = NULL; 337c1ac89b1Seric } 338c1ac89b1Seric if (e->e_xfp != NULL) 339c1ac89b1Seric { 340c1ac89b1Seric (void) xfclose(e->e_xfp, "sendenvelope", "xfp"); 341c1ac89b1Seric e->e_xfp = NULL; 342c1ac89b1Seric } 343c1ac89b1Seric return; 344c1ac89b1Seric } 345c1ac89b1Seric 346c1ac89b1Seric /* double fork to avoid zombies */ 347c1ac89b1Seric if (fork() > 0) 348c1ac89b1Seric exit(EX_OK); 349c1ac89b1Seric 350c1ac89b1Seric /* be sure we are immune from the terminal */ 351c1ac89b1Seric disconnect(FALSE, e); 352c1ac89b1Seric 353c1ac89b1Seric # ifdef LOCKF 354c1ac89b1Seric /* 355c1ac89b1Seric ** Now try to get our lock back. 356c1ac89b1Seric */ 357c1ac89b1Seric 358c1ac89b1Seric lfd.l_type = F_WRLCK; 359c1ac89b1Seric lfd.l_whence = lfd.l_start = lfd.l_len = 0; 360c1ac89b1Seric e->e_lockfp = fopen(queuename(e, 'q'), "r+"); 361c1ac89b1Seric if (e->e_lockfp == NULL || 362c1ac89b1Seric fcntl(fileno(e->e_lockfp), F_SETLK, &lfd) < 0) 363c1ac89b1Seric { 364c1ac89b1Seric /* oops.... lost it */ 365c1ac89b1Seric if (tTd(13, 1)) 366c1ac89b1Seric printf("sendenvelope: %s lost lock: lockfp=%x, %s\n", 367c1ac89b1Seric e->e_id, e->e_lockfp, errstring(errno)); 368c1ac89b1Seric 369c1ac89b1Seric # ifdef LOG 370c1ac89b1Seric if (LogLevel > 29) 371c1ac89b1Seric syslog(LOG_NOTICE, "%s: lost lock: %m", 372c1ac89b1Seric e->e_id); 373c1ac89b1Seric # endif /* LOG */ 374c1ac89b1Seric exit(EX_OK); 375c1ac89b1Seric } 376c1ac89b1Seric # endif /* LOCKF */ 377c1ac89b1Seric 378c1ac89b1Seric /* 379c1ac89b1Seric ** Close any cached connections. 380c1ac89b1Seric ** 381c1ac89b1Seric ** We don't send the QUIT protocol because the parent 382c1ac89b1Seric ** still knows about the connection. 383c1ac89b1Seric ** 384c1ac89b1Seric ** This should only happen when delivering an error 385c1ac89b1Seric ** message. 386c1ac89b1Seric */ 387c1ac89b1Seric 388c1ac89b1Seric mci_flush(FALSE, NULL); 389c1ac89b1Seric 390c1ac89b1Seric break; 391c1ac89b1Seric } 392c1ac89b1Seric 393c1ac89b1Seric /* 3949c9e68d9Seric ** Run through the list and send everything. 3959c9e68d9Seric */ 3969c9e68d9Seric 3979c9e68d9Seric e->e_nsent = 0; 3989c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 3999c9e68d9Seric { 4009c9e68d9Seric if (mode == SM_VERIFY) 4019c9e68d9Seric { 4029c9e68d9Seric e->e_to = q->q_paddr; 4039c9e68d9Seric if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4049c9e68d9Seric message("deliverable"); 4059c9e68d9Seric } 4069c9e68d9Seric else if (!bitset(QDONTSEND|QBADADDR, q->q_flags)) 4079c9e68d9Seric { 4089c9e68d9Seric # ifdef QUEUE 4099c9e68d9Seric /* 4109c9e68d9Seric ** Checkpoint the send list every few addresses 4119c9e68d9Seric */ 4129c9e68d9Seric 4139c9e68d9Seric if (e->e_nsent >= CheckpointInterval) 4149c9e68d9Seric { 4159c9e68d9Seric queueup(e, TRUE, FALSE); 4169c9e68d9Seric e->e_nsent = 0; 4179c9e68d9Seric } 4189c9e68d9Seric # endif /* QUEUE */ 4199c9e68d9Seric (void) deliver(e, q); 4209c9e68d9Seric } 4219c9e68d9Seric } 4229c9e68d9Seric Verbose = oldverbose; 4239c9e68d9Seric 4249c9e68d9Seric /* 4259c9e68d9Seric ** Now run through and check for errors. 4269c9e68d9Seric */ 4279c9e68d9Seric 4289c9e68d9Seric if (mode == SM_VERIFY) 4299c9e68d9Seric { 4309c9e68d9Seric return; 4319c9e68d9Seric } 4329c9e68d9Seric 4339c9e68d9Seric for (q = e->e_sendqueue; q != NULL; q = q->q_next) 4349c9e68d9Seric { 4359c9e68d9Seric if (tTd(13, 3)) 4369c9e68d9Seric { 4379c9e68d9Seric printf("Checking "); 4389c9e68d9Seric printaddr(q, FALSE); 4399c9e68d9Seric } 4409c9e68d9Seric 4419c9e68d9Seric /* only send errors if the message failed */ 442ce5531bdSeric if (!bitset(QBADADDR, q->q_flags) || 443ce5531bdSeric bitset(QDONTSEND, q->q_flags)) 4449c9e68d9Seric continue; 4459c9e68d9Seric 4469c9e68d9Seric e->e_flags |= EF_FATALERRS; 4479c9e68d9Seric 4489c9e68d9Seric if (q->q_owner == NULL && strcmp(e->e_from.q_paddr, "<>") != 0) 4499c9e68d9Seric (void) sendtolist(e->e_from.q_paddr, NULL, 4509c9e68d9Seric &e->e_errorqueue, e); 4519c9e68d9Seric } 4529c9e68d9Seric 4539c9e68d9Seric if (mode == SM_FORK) 4549c9e68d9Seric finis(); 4559c9e68d9Seric } 4569c9e68d9Seric /* 4579c9e68d9Seric ** DOFORK -- do a fork, retrying a couple of times on failure. 4589c9e68d9Seric ** 4599c9e68d9Seric ** This MUST be a macro, since after a vfork we are running 4609c9e68d9Seric ** two processes on the same stack!!! 4619c9e68d9Seric ** 4629c9e68d9Seric ** Parameters: 4639c9e68d9Seric ** none. 4649c9e68d9Seric ** 4659c9e68d9Seric ** Returns: 4669c9e68d9Seric ** From a macro??? You've got to be kidding! 4679c9e68d9Seric ** 4689c9e68d9Seric ** Side Effects: 4699c9e68d9Seric ** Modifies the ==> LOCAL <== variable 'pid', leaving: 4709c9e68d9Seric ** pid of child in parent, zero in child. 4719c9e68d9Seric ** -1 on unrecoverable error. 4729c9e68d9Seric ** 4739c9e68d9Seric ** Notes: 4749c9e68d9Seric ** I'm awfully sorry this looks so awful. That's 4759c9e68d9Seric ** vfork for you..... 4769c9e68d9Seric */ 4779c9e68d9Seric 4789c9e68d9Seric # define NFORKTRIES 5 4799c9e68d9Seric 4809c9e68d9Seric # ifndef FORK 4819c9e68d9Seric # define FORK fork 4829c9e68d9Seric # endif 4839c9e68d9Seric 4849c9e68d9Seric # define DOFORK(fORKfN) \ 4859c9e68d9Seric {\ 4869c9e68d9Seric register int i;\ 4879c9e68d9Seric \ 4889c9e68d9Seric for (i = NFORKTRIES; --i >= 0; )\ 4899c9e68d9Seric {\ 4909c9e68d9Seric pid = fORKfN();\ 4919c9e68d9Seric if (pid >= 0)\ 4929c9e68d9Seric break;\ 4939c9e68d9Seric if (i > 0)\ 4949c9e68d9Seric sleep((unsigned) NFORKTRIES - i);\ 4959c9e68d9Seric }\ 4969c9e68d9Seric } 4979c9e68d9Seric /* 4989c9e68d9Seric ** DOFORK -- simple fork interface to DOFORK. 4999c9e68d9Seric ** 5009c9e68d9Seric ** Parameters: 5019c9e68d9Seric ** none. 5029c9e68d9Seric ** 5039c9e68d9Seric ** Returns: 5049c9e68d9Seric ** pid of child in parent. 5059c9e68d9Seric ** zero in child. 5069c9e68d9Seric ** -1 on error. 5079c9e68d9Seric ** 5089c9e68d9Seric ** Side Effects: 5099c9e68d9Seric ** returns twice, once in parent and once in child. 5109c9e68d9Seric */ 5119c9e68d9Seric 5129c9e68d9Seric dofork() 5139c9e68d9Seric { 5149c9e68d9Seric register int pid; 5159c9e68d9Seric 5169c9e68d9Seric DOFORK(fork); 5179c9e68d9Seric return (pid); 5189c9e68d9Seric } 5199c9e68d9Seric /* 52013bbc08cSeric ** DELIVER -- Deliver a message to a list of addresses. 52113bbc08cSeric ** 52213bbc08cSeric ** This routine delivers to everyone on the same host as the 52313bbc08cSeric ** user on the head of the list. It is clever about mailers 52413bbc08cSeric ** that don't handle multiple users. It is NOT guaranteed 52513bbc08cSeric ** that it will deliver to all these addresses however -- so 52613bbc08cSeric ** deliver should be called once for each address on the 52713bbc08cSeric ** list. 52825a99e2eSeric ** 52925a99e2eSeric ** Parameters: 530588cad61Seric ** e -- the envelope to deliver. 531c77d1c25Seric ** firstto -- head of the address list to deliver to. 53225a99e2eSeric ** 53325a99e2eSeric ** Returns: 53425a99e2eSeric ** zero -- successfully delivered. 53525a99e2eSeric ** else -- some failure, see ExitStat for more info. 53625a99e2eSeric ** 53725a99e2eSeric ** Side Effects: 53825a99e2eSeric ** The standard input is passed off to someone. 53925a99e2eSeric */ 54025a99e2eSeric 541588cad61Seric deliver(e, firstto) 542588cad61Seric register ENVELOPE *e; 543c77d1c25Seric ADDRESS *firstto; 54425a99e2eSeric { 54578442df3Seric char *host; /* host being sent to */ 54678442df3Seric char *user; /* user being sent to */ 54725a99e2eSeric char **pvp; 5485dfc646bSeric register char **mvp; 54925a99e2eSeric register char *p; 550588cad61Seric register MAILER *m; /* mailer for this recipient */ 5516259796dSeric ADDRESS *ctladdr; 552b31e7f2bSeric register MCI *mci; 553c77d1c25Seric register ADDRESS *to = firstto; 554c579ef51Seric bool clever = FALSE; /* running user smtp to this mailer */ 555772e6e50Seric ADDRESS *tochain = NULL; /* chain of users in this mailer call */ 556911693bfSbostic int rcode; /* response code */ 557e103b48fSeric char *firstsig; /* signature of firstto */ 5589c9e68d9Seric int pid; 5599c9e68d9Seric char *curhost; 5609c9e68d9Seric int mpvect[2]; 5619c9e68d9Seric int rpvect[2]; 562ee6bf8dfSeric char *pv[MAXPV+1]; 563579ef0ddSeric char tobuf[TOBUFSIZE]; /* text line of to people */ 564ee6bf8dfSeric char buf[MAXNAME]; 565c23ed322Seric char rpathbuf[MAXNAME]; /* translated return path */ 566fabb3bd4Seric extern int checkcompat(); 567ee6bf8dfSeric extern ADDRESS *getctladdr(); 568ee6bf8dfSeric extern char *remotename(); 569e103b48fSeric extern char *hostsignature(); 5709c9e68d9Seric extern FILE *fdopen(); 57125a99e2eSeric 57235490626Seric errno = 0; 573ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags)) 5745dfc646bSeric return (0); 57525a99e2eSeric 576134746fbSeric #ifdef NAMED_BIND 577912a731aSbostic /* unless interactive, try twice, over a minute */ 578912a731aSbostic if (OpMode == MD_DAEMON || OpMode == MD_SMTP) { 579912a731aSbostic _res.retrans = 30; 580912a731aSbostic _res.retry = 2; 581912a731aSbostic } 582d4bd8f0eSbostic #endif 583912a731aSbostic 58451552439Seric m = to->q_mailer; 58551552439Seric host = to->q_host; 586c9be6216Seric CurEnv = e; /* just in case */ 5874384d521Seric e->e_statmsg = NULL; 58851552439Seric 5896ef48975Seric if (tTd(10, 1)) 5905dfc646bSeric printf("\n--deliver, mailer=%d, host=`%s', first user=`%s'\n", 59151552439Seric m->m_mno, host, to->q_user); 592f3dbc832Seric 593f3dbc832Seric /* 594f3dbc832Seric ** If this mailer is expensive, and if we don't want to make 595f3dbc832Seric ** connections now, just mark these addresses and return. 596f3dbc832Seric ** This is useful if we want to batch connections to 597f3dbc832Seric ** reduce load. This will cause the messages to be 598f3dbc832Seric ** queued up, and a daemon will come along to send the 599f3dbc832Seric ** messages later. 600f3dbc832Seric ** This should be on a per-mailer basis. 601f3dbc832Seric */ 602f3dbc832Seric 60319c47125Seric if (NoConnect && !bitset(EF_QUEUERUN, e->e_flags) && 60419c47125Seric bitnset(M_EXPENSIVE, m->m_flags) && !Verbose) 605f3dbc832Seric { 606f3dbc832Seric for (; to != NULL; to = to->q_next) 607f4560e80Seric { 608ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 609c6e18ac5Seric to->q_mailer != m) 610f4560e80Seric continue; 611f3dbc832Seric to->q_flags |= QQUEUEUP|QDONTSEND; 612588cad61Seric e->e_to = to->q_paddr; 61308b25121Seric message("queued"); 6142f624c86Seric if (LogLevel > 8) 61581161401Seric logdelivery(m, NULL, "queued", e); 616f4560e80Seric } 617588cad61Seric e->e_to = NULL; 618f3dbc832Seric return (0); 619f3dbc832Seric } 620f3dbc832Seric 62125a99e2eSeric /* 6225dfc646bSeric ** Do initial argv setup. 6235dfc646bSeric ** Insert the mailer name. Notice that $x expansion is 6245dfc646bSeric ** NOT done on the mailer name. Then, if the mailer has 6255dfc646bSeric ** a picky -f flag, we insert it as appropriate. This 6265dfc646bSeric ** code does not check for 'pv' overflow; this places a 6275dfc646bSeric ** manifest lower limit of 4 for MAXPV. 6283bea8136Seric ** The from address rewrite is expected to make 6293bea8136Seric ** the address relative to the other end. 6305dfc646bSeric */ 6315dfc646bSeric 63278442df3Seric /* rewrite from address, using rewriting rules */ 633ee4b0922Seric (void) strcpy(rpathbuf, remotename(e->e_from.q_paddr, m, TRUE, FALSE, 6349c69ca01Seric TRUE, FALSE, e)); 635ee4b0922Seric define('g', rpathbuf, e); /* translated return path */ 636588cad61Seric define('h', host, e); /* to host */ 6375dfc646bSeric Errors = 0; 6385dfc646bSeric pvp = pv; 6395dfc646bSeric *pvp++ = m->m_argv[0]; 6405dfc646bSeric 6415dfc646bSeric /* insert -f or -r flag as appropriate */ 64257fc6f17Seric if (FromFlag && (bitnset(M_FOPT, m->m_flags) || bitnset(M_ROPT, m->m_flags))) 6435dfc646bSeric { 64457fc6f17Seric if (bitnset(M_FOPT, m->m_flags)) 6455dfc646bSeric *pvp++ = "-f"; 6465dfc646bSeric else 6475dfc646bSeric *pvp++ = "-r"; 648c23ed322Seric *pvp++ = newstr(rpathbuf); 6495dfc646bSeric } 6505dfc646bSeric 6515dfc646bSeric /* 6525dfc646bSeric ** Append the other fixed parts of the argv. These run 6535dfc646bSeric ** up to the first entry containing "$u". There can only 6545dfc646bSeric ** be one of these, and there are only a few more slots 6555dfc646bSeric ** in the pv after it. 6565dfc646bSeric */ 6575dfc646bSeric 6585dfc646bSeric for (mvp = m->m_argv; (p = *++mvp) != NULL; ) 6595dfc646bSeric { 6602bc47524Seric /* can't use strchr here because of sign extension problems */ 6612bc47524Seric while (*p != '\0') 6622bc47524Seric { 6632bc47524Seric if ((*p++ & 0377) == MACROEXPAND) 6642bc47524Seric { 6652bc47524Seric if (*p == 'u') 6665dfc646bSeric break; 6672bc47524Seric } 6682bc47524Seric } 6692bc47524Seric 6702bc47524Seric if (*p != '\0') 6715dfc646bSeric break; 6725dfc646bSeric 6735dfc646bSeric /* this entry is safe -- go ahead and process it */ 674588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 6755dfc646bSeric *pvp++ = newstr(buf); 6765dfc646bSeric if (pvp >= &pv[MAXPV - 3]) 6775dfc646bSeric { 67808b25121Seric syserr("554 Too many parameters to %s before $u", pv[0]); 6795dfc646bSeric return (-1); 6805dfc646bSeric } 6815dfc646bSeric } 682c579ef51Seric 68333db8731Seric /* 68433db8731Seric ** If we have no substitution for the user name in the argument 68533db8731Seric ** list, we know that we must supply the names otherwise -- and 68633db8731Seric ** SMTP is the answer!! 68733db8731Seric */ 68833db8731Seric 6895dfc646bSeric if (*mvp == NULL) 690c579ef51Seric { 691c579ef51Seric /* running SMTP */ 6922c7e1b8dSeric # ifdef SMTP 693c579ef51Seric clever = TRUE; 694c579ef51Seric *pvp = NULL; 6956c2c3107Seric # else /* SMTP */ 69633db8731Seric /* oops! we don't implement SMTP */ 69708b25121Seric syserr("554 SMTP style mailer"); 6982c7e1b8dSeric return (EX_SOFTWARE); 6996c2c3107Seric # endif /* SMTP */ 700c579ef51Seric } 7015dfc646bSeric 7025dfc646bSeric /* 7035dfc646bSeric ** At this point *mvp points to the argument with $u. We 7045dfc646bSeric ** run through our address list and append all the addresses 7055dfc646bSeric ** we can. If we run out of space, do not fret! We can 7065dfc646bSeric ** always send another copy later. 7075dfc646bSeric */ 7085dfc646bSeric 7095dfc646bSeric tobuf[0] = '\0'; 710588cad61Seric e->e_to = tobuf; 7116259796dSeric ctladdr = NULL; 712e103b48fSeric firstsig = hostsignature(firstto->q_mailer, firstto->q_host, e); 7135dfc646bSeric for (; to != NULL; to = to->q_next) 7145dfc646bSeric { 7155dfc646bSeric /* avoid sending multiple recipients to dumb mailers */ 71657fc6f17Seric if (tobuf[0] != '\0' && !bitnset(M_MUSER, m->m_flags)) 7175dfc646bSeric break; 7185dfc646bSeric 7195dfc646bSeric /* if already sent or not for this host, don't send */ 720ee4b0922Seric if (bitset(QDONTSEND|QBADADDR|QQUEUEUP, to->q_flags) || 721e103b48fSeric to->q_mailer != firstto->q_mailer || 722e103b48fSeric strcmp(hostsignature(to->q_mailer, to->q_host, e), firstsig) != 0) 7235dfc646bSeric continue; 7246259796dSeric 7254b22ea87Seric /* avoid overflowing tobuf */ 726aa50a568Sbostic if (sizeof tobuf < (strlen(to->q_paddr) + strlen(tobuf) + 2)) 7274b22ea87Seric break; 7284b22ea87Seric 7296ef48975Seric if (tTd(10, 1)) 730772e6e50Seric { 731772e6e50Seric printf("\nsend to "); 732772e6e50Seric printaddr(to, FALSE); 733772e6e50Seric } 734772e6e50Seric 7356259796dSeric /* compute effective uid/gid when sending */ 7367da1035fSeric if (to->q_mailer == ProgMailer) 7376259796dSeric ctladdr = getctladdr(to); 7386259796dSeric 7395dfc646bSeric user = to->q_user; 740588cad61Seric e->e_to = to->q_paddr; 74175f1ade9Seric if (tTd(10, 5)) 74275f1ade9Seric { 74375f1ade9Seric printf("deliver: QDONTSEND "); 74475f1ade9Seric printaddr(to, FALSE); 74575f1ade9Seric } 746ee4b0922Seric to->q_flags |= QDONTSEND; 7475dfc646bSeric 7485dfc646bSeric /* 7495dfc646bSeric ** Check to see that these people are allowed to 7505dfc646bSeric ** talk to each other. 7512a6e0786Seric */ 7522a6e0786Seric 75369582d2fSeric if (m->m_maxsize != 0 && e->e_msgsize > m->m_maxsize) 75469582d2fSeric { 75569582d2fSeric NoReturn = TRUE; 75608b25121Seric usrerr("552 Message is too large; %ld bytes max", m->m_maxsize); 75781161401Seric giveresponse(EX_UNAVAILABLE, m, NULL, e); 75869582d2fSeric continue; 75969582d2fSeric } 760fabb3bd4Seric rcode = checkcompat(to, e); 7611793c9c5Seric if (rcode != EX_OK) 7625dfc646bSeric { 76381161401Seric giveresponse(rcode, m, NULL, e); 7645dfc646bSeric continue; 7655dfc646bSeric } 7662a6e0786Seric 7672a6e0786Seric /* 7689ec9501bSeric ** Strip quote bits from names if the mailer is dumb 7699ec9501bSeric ** about them. 77025a99e2eSeric */ 77125a99e2eSeric 77257fc6f17Seric if (bitnset(M_STRIPQ, m->m_flags)) 77325a99e2eSeric { 7741d8f1806Seric stripquotes(user); 7751d8f1806Seric stripquotes(host); 77625a99e2eSeric } 77725a99e2eSeric 778cdb828c5Seric /* hack attack -- delivermail compatibility */ 779cdb828c5Seric if (m == ProgMailer && *user == '|') 780cdb828c5Seric user++; 781cdb828c5Seric 78225a99e2eSeric /* 7833efaed6eSeric ** If an error message has already been given, don't 7843efaed6eSeric ** bother to send to this address. 7853efaed6eSeric ** 7863efaed6eSeric ** >>>>>>>>>> This clause assumes that the local mailer 7873efaed6eSeric ** >> NOTE >> cannot do any further aliasing; that 7883efaed6eSeric ** >>>>>>>>>> function is subsumed by sendmail. 7893efaed6eSeric */ 7903efaed6eSeric 7916cae517dSeric if (bitset(QBADADDR|QQUEUEUP, to->q_flags)) 7923efaed6eSeric continue; 7933efaed6eSeric 794f2fec898Seric /* save statistics.... */ 795588cad61Seric markstats(e, to); 796f2fec898Seric 7973efaed6eSeric /* 79825a99e2eSeric ** See if this user name is "special". 79925a99e2eSeric ** If the user name has a slash in it, assume that this 80051552439Seric ** is a file -- send it off without further ado. Note 80151552439Seric ** that this type of addresses is not processed along 80251552439Seric ** with the others, so we fudge on the To person. 80325a99e2eSeric */ 80425a99e2eSeric 8052c017f8dSeric if (m == FileMailer) 80625a99e2eSeric { 807b31e7f2bSeric rcode = mailfile(user, getctladdr(to), e); 80881161401Seric giveresponse(rcode, m, NULL, e); 809dde5acadSeric if (rcode == EX_OK) 810dde5acadSeric to->q_flags |= QSENT; 8115dfc646bSeric continue; 81225a99e2eSeric } 81325a99e2eSeric 81413bbc08cSeric /* 81513bbc08cSeric ** Address is verified -- add this user to mailer 81613bbc08cSeric ** argv, and add it to the print list of recipients. 81713bbc08cSeric */ 81813bbc08cSeric 819508daeccSeric /* link together the chain of recipients */ 820508daeccSeric to->q_tchain = tochain; 821508daeccSeric tochain = to; 822508daeccSeric 8235dfc646bSeric /* create list of users for error messages */ 824db8841e9Seric (void) strcat(tobuf, ","); 825db8841e9Seric (void) strcat(tobuf, to->q_paddr); 826588cad61Seric define('u', user, e); /* to user */ 827588cad61Seric define('z', to->q_home, e); /* user's home */ 8285dfc646bSeric 829c579ef51Seric /* 830508daeccSeric ** Expand out this user into argument list. 831c579ef51Seric */ 832c579ef51Seric 833508daeccSeric if (!clever) 834c579ef51Seric { 835588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8365dfc646bSeric *pvp++ = newstr(buf); 8375dfc646bSeric if (pvp >= &pv[MAXPV - 2]) 8385dfc646bSeric { 8395dfc646bSeric /* allow some space for trailing parms */ 8405dfc646bSeric break; 8415dfc646bSeric } 8425dfc646bSeric } 843c579ef51Seric } 8445dfc646bSeric 845145b49b1Seric /* see if any addresses still exist */ 846145b49b1Seric if (tobuf[0] == '\0') 847c579ef51Seric { 848588cad61Seric define('g', (char *) NULL, e); 849145b49b1Seric return (0); 850c579ef51Seric } 851145b49b1Seric 8525dfc646bSeric /* print out messages as full list */ 85363780dbdSeric e->e_to = tobuf + 1; 8545dfc646bSeric 8555dfc646bSeric /* 8565dfc646bSeric ** Fill out any parameters after the $u parameter. 8575dfc646bSeric */ 8585dfc646bSeric 859c579ef51Seric while (!clever && *++mvp != NULL) 8605dfc646bSeric { 861588cad61Seric expand(*mvp, buf, &buf[sizeof buf - 1], e); 8625dfc646bSeric *pvp++ = newstr(buf); 8635dfc646bSeric if (pvp >= &pv[MAXPV]) 86408b25121Seric syserr("554 deliver: pv overflow after $u for %s", pv[0]); 8655dfc646bSeric } 8665dfc646bSeric *pvp++ = NULL; 8675dfc646bSeric 86825a99e2eSeric /* 86925a99e2eSeric ** Call the mailer. 8706328bdf7Seric ** The argument vector gets built, pipes 87125a99e2eSeric ** are created as necessary, and we fork & exec as 8726328bdf7Seric ** appropriate. 873c579ef51Seric ** If we are running SMTP, we just need to clean up. 87425a99e2eSeric */ 87525a99e2eSeric 8767ee87e5fSeric if (ctladdr == NULL && m != ProgMailer) 87786b26461Seric ctladdr = &e->e_from; 878134746fbSeric #ifdef NAMED_BIND 8792bcc6d2dSeric if (ConfigLevel < 2) 880912a731aSbostic _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 881134746fbSeric #endif 8829c9e68d9Seric 8839c9e68d9Seric if (tTd(11, 1)) 884134746fbSeric { 8859c9e68d9Seric printf("openmailer:"); 8869c9e68d9Seric printav(pv); 8879c9e68d9Seric } 8889c9e68d9Seric errno = 0; 8899c9e68d9Seric 8909c9e68d9Seric CurHostName = m->m_mailer; 8919c9e68d9Seric 8929c9e68d9Seric /* 8939c9e68d9Seric ** Deal with the special case of mail handled through an IPC 8949c9e68d9Seric ** connection. 8959c9e68d9Seric ** In this case we don't actually fork. We must be 8969c9e68d9Seric ** running SMTP for this to work. We will return a 8979c9e68d9Seric ** zero pid to indicate that we are running IPC. 8989c9e68d9Seric ** We also handle a debug version that just talks to stdin/out. 8999c9e68d9Seric */ 9009c9e68d9Seric 9019c9e68d9Seric curhost = NULL; 9029c9e68d9Seric 9039c9e68d9Seric /* check for Local Person Communication -- not for mortals!!! */ 9049c9e68d9Seric if (strcmp(m->m_mailer, "[LPC]") == 0) 9059c9e68d9Seric { 9069c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 9079c9e68d9Seric bzero((char *) mci, sizeof *mci); 9089c9e68d9Seric mci->mci_in = stdin; 9099c9e68d9Seric mci->mci_out = stdout; 9109c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 9119c9e68d9Seric mci->mci_mailer = m; 9129c9e68d9Seric } 9139c9e68d9Seric else if (strcmp(m->m_mailer, "[IPC]") == 0 || 9149c9e68d9Seric strcmp(m->m_mailer, "[TCP]") == 0) 9159c9e68d9Seric { 9169c9e68d9Seric #ifdef DAEMON 9179c9e68d9Seric register int i; 9189c9e68d9Seric register u_short port; 9199c9e68d9Seric extern MCI *mci_get(); 9209c9e68d9Seric extern char *hostsignature(); 9219c9e68d9Seric 9229c9e68d9Seric CurHostName = pv[1]; 9239c9e68d9Seric curhost = hostsignature(m, pv[1], e); 9249c9e68d9Seric 9259c9e68d9Seric if (curhost == NULL || curhost[0] == '\0') 9269c9e68d9Seric { 9279c9e68d9Seric syserr("null signature"); 928845e533cSeric rcode = EX_OSERR; 929b31e7f2bSeric goto give_up; 930b31e7f2bSeric } 9319c9e68d9Seric 9329c9e68d9Seric if (!clever) 9339c9e68d9Seric { 9349c9e68d9Seric syserr("554 non-clever IPC"); 9359c9e68d9Seric rcode = EX_OSERR; 9369c9e68d9Seric goto give_up; 9379c9e68d9Seric } 9389c9e68d9Seric if (pv[2] != NULL) 9399c9e68d9Seric port = atoi(pv[2]); 9409c9e68d9Seric else 9419c9e68d9Seric port = 0; 9429c9e68d9Seric tryhost: 9439c9e68d9Seric mci = NULL; 9449c9e68d9Seric while (*curhost != '\0') 9459c9e68d9Seric { 9469c9e68d9Seric register char *p; 9479c9e68d9Seric static char hostbuf[MAXNAME]; 9489c9e68d9Seric 9499c9e68d9Seric mci = NULL; 9509c9e68d9Seric 9519c9e68d9Seric /* pull the next host from the signature */ 9529c9e68d9Seric p = strchr(curhost, ':'); 9539c9e68d9Seric if (p == NULL) 9549c9e68d9Seric p = &curhost[strlen(curhost)]; 9559c9e68d9Seric strncpy(hostbuf, curhost, p - curhost); 9569c9e68d9Seric hostbuf[p - curhost] = '\0'; 9579c9e68d9Seric if (*p != '\0') 9589c9e68d9Seric p++; 9599c9e68d9Seric curhost = p; 9609c9e68d9Seric 9619c9e68d9Seric /* see if we already know that this host is fried */ 9629c9e68d9Seric CurHostName = hostbuf; 9639c9e68d9Seric mci = mci_get(hostbuf, m); 9649c9e68d9Seric if (mci->mci_state != MCIS_CLOSED) 9659c9e68d9Seric { 9669c9e68d9Seric if (tTd(11, 1)) 9679c9e68d9Seric { 9689c9e68d9Seric printf("openmailer: "); 9699c9e68d9Seric mci_dump(mci); 9709c9e68d9Seric } 9719c9e68d9Seric CurHostName = mci->mci_host; 9729c9e68d9Seric break; 9739c9e68d9Seric } 9749c9e68d9Seric mci->mci_mailer = m; 9759c9e68d9Seric if (mci->mci_exitstat != EX_OK) 9769c9e68d9Seric continue; 9779c9e68d9Seric 9789c9e68d9Seric /* try the connection */ 9799c9e68d9Seric setproctitle("%s %s: %s", e->e_id, hostbuf, "user open"); 9809c9e68d9Seric message("Connecting to %s (%s)...", 9819c9e68d9Seric hostbuf, m->m_name); 9829c9e68d9Seric i = makeconnection(hostbuf, port, mci, 9839c9e68d9Seric bitnset(M_SECURE_PORT, m->m_flags)); 9849c9e68d9Seric mci->mci_exitstat = i; 9859c9e68d9Seric mci->mci_errno = errno; 9869c9e68d9Seric if (i == EX_OK) 9879c9e68d9Seric { 9889c9e68d9Seric mci->mci_state = MCIS_OPENING; 9899c9e68d9Seric mci_cache(mci); 9909c9e68d9Seric break; 9919c9e68d9Seric } 9929c9e68d9Seric else if (tTd(11, 1)) 9939c9e68d9Seric printf("openmailer: makeconnection => stat=%d, errno=%d\n", 9949c9e68d9Seric i, errno); 9959c9e68d9Seric 9969c9e68d9Seric 9979c9e68d9Seric /* enter status of this host */ 9989c9e68d9Seric setstat(i); 9999c9e68d9Seric } 10009c9e68d9Seric mci->mci_pid = 0; 10019c9e68d9Seric #else /* no DAEMON */ 10029c9e68d9Seric syserr("554 openmailer: no IPC"); 10039c9e68d9Seric if (tTd(11, 1)) 10049c9e68d9Seric printf("openmailer: NULL\n"); 10059c9e68d9Seric return NULL; 10069c9e68d9Seric #endif /* DAEMON */ 10079c9e68d9Seric } 10089c9e68d9Seric else 10099c9e68d9Seric { 10106fe8c3bcSeric int i; 10116fe8c3bcSeric struct stat stbuf; 10126fe8c3bcSeric 10136fe8c3bcSeric /* make absolutely certain 0, 1, and 2 are in use */ 10146fe8c3bcSeric for (i = 0; i < 3; i++) 10156fe8c3bcSeric { 10166fe8c3bcSeric if (fstat(i, &stbuf) < 0) 10176fe8c3bcSeric { 10186fe8c3bcSeric /* oops.... */ 10190e3bfef5Seric int fd; 10200e3bfef5Seric 10210e3bfef5Seric syserr("%s... openmailer(%s): fd %d not open", 10220e3bfef5Seric e->e_to, m->m_name, i); 10230e3bfef5Seric fd = open("/dev/null", O_RDONLY, 0666); 10240e3bfef5Seric if (fd != i) 10250e3bfef5Seric { 10260e3bfef5Seric (void) dup2(fd, i); 10270e3bfef5Seric (void) close(fd); 10280e3bfef5Seric } 10296fe8c3bcSeric } 10306fe8c3bcSeric } 10316fe8c3bcSeric 10329c9e68d9Seric /* create a pipe to shove the mail through */ 10339c9e68d9Seric if (pipe(mpvect) < 0) 10349c9e68d9Seric { 10350e3bfef5Seric syserr("%s... openmailer(%s): pipe (to mailer)", 10360e3bfef5Seric e->e_to, m->m_name); 10379c9e68d9Seric if (tTd(11, 1)) 10389c9e68d9Seric printf("openmailer: NULL\n"); 10399c9e68d9Seric rcode = EX_OSERR; 10409c9e68d9Seric goto give_up; 10419c9e68d9Seric } 10429c9e68d9Seric 10439c9e68d9Seric /* if this mailer speaks smtp, create a return pipe */ 10449c9e68d9Seric if (clever && pipe(rpvect) < 0) 10459c9e68d9Seric { 10460e3bfef5Seric syserr("%s... openmailer(%s): pipe (from mailer)", 10470e3bfef5Seric e->e_to, m->m_name); 10489c9e68d9Seric (void) close(mpvect[0]); 10499c9e68d9Seric (void) close(mpvect[1]); 10509c9e68d9Seric if (tTd(11, 1)) 10519c9e68d9Seric printf("openmailer: NULL\n"); 10529c9e68d9Seric rcode = EX_OSERR; 10539c9e68d9Seric goto give_up; 10549c9e68d9Seric } 10559c9e68d9Seric 10569c9e68d9Seric /* 10579c9e68d9Seric ** Actually fork the mailer process. 10589c9e68d9Seric ** DOFORK is clever about retrying. 10599c9e68d9Seric ** 10609c9e68d9Seric ** Dispose of SIGCHLD signal catchers that may be laying 10619c9e68d9Seric ** around so that endmail will get it. 10629c9e68d9Seric */ 10639c9e68d9Seric 10649c9e68d9Seric if (e->e_xfp != NULL) 10659c9e68d9Seric (void) fflush(e->e_xfp); /* for debugging */ 10669c9e68d9Seric (void) fflush(stdout); 10679c9e68d9Seric # ifdef SIGCHLD 10689c9e68d9Seric (void) signal(SIGCHLD, SIG_DFL); 10699c9e68d9Seric # endif /* SIGCHLD */ 10709c9e68d9Seric DOFORK(FORK); 10719c9e68d9Seric /* pid is set by DOFORK */ 10729c9e68d9Seric if (pid < 0) 10739c9e68d9Seric { 10749c9e68d9Seric /* failure */ 10750e3bfef5Seric syserr("%s... openmailer(%s): cannot fork", 10760e3bfef5Seric e->e_to, m->m_name); 10779c9e68d9Seric (void) close(mpvect[0]); 10789c9e68d9Seric (void) close(mpvect[1]); 10799c9e68d9Seric if (clever) 10809c9e68d9Seric { 10819c9e68d9Seric (void) close(rpvect[0]); 10829c9e68d9Seric (void) close(rpvect[1]); 10839c9e68d9Seric } 10849c9e68d9Seric if (tTd(11, 1)) 10859c9e68d9Seric printf("openmailer: NULL\n"); 10869c9e68d9Seric rcode = EX_OSERR; 10879c9e68d9Seric goto give_up; 10889c9e68d9Seric } 10899c9e68d9Seric else if (pid == 0) 10909c9e68d9Seric { 10919c9e68d9Seric int i; 10929c9e68d9Seric int saveerrno; 10939c9e68d9Seric char **ep; 10949c9e68d9Seric char *env[MAXUSERENVIRON]; 10959c9e68d9Seric extern char **environ; 10969c9e68d9Seric extern int DtableSize; 10979c9e68d9Seric 10989c9e68d9Seric /* child -- set up input & exec mailer */ 10999c9e68d9Seric /* make diagnostic output be standard output */ 11009c9e68d9Seric (void) signal(SIGINT, SIG_IGN); 11019c9e68d9Seric (void) signal(SIGHUP, SIG_IGN); 11029c9e68d9Seric (void) signal(SIGTERM, SIG_DFL); 11039c9e68d9Seric 11049c9e68d9Seric /* close any other cached connections */ 11059c9e68d9Seric mci_flush(FALSE, mci); 11069c9e68d9Seric 1107b986f6aaSeric /* move into some "safe" directory */ 1108b986f6aaSeric if (m->m_execdir != NULL) 1109b986f6aaSeric { 1110b986f6aaSeric char *p, *q; 1111b986f6aaSeric char buf[MAXLINE]; 1112b986f6aaSeric 1113b986f6aaSeric for (p = m->m_execdir; p != NULL; p = q) 1114b986f6aaSeric { 1115b986f6aaSeric q = strchr(p, ':'); 1116b986f6aaSeric if (q != NULL) 1117b986f6aaSeric *q = '\0'; 1118b986f6aaSeric expand(p, buf, &buf[sizeof buf] - 1, e); 1119b986f6aaSeric if (q != NULL) 1120b986f6aaSeric *q++ = ':'; 1121b986f6aaSeric if (tTd(11, 20)) 1122b986f6aaSeric printf("openmailer: trydir %s\n", 1123b986f6aaSeric buf); 1124b986f6aaSeric if (buf[0] != '\0' && chdir(buf) >= 0) 1125b986f6aaSeric break; 1126b986f6aaSeric } 1127b986f6aaSeric } 1128b986f6aaSeric 11299c9e68d9Seric /* arrange to filter std & diag output of command */ 11309c9e68d9Seric if (clever) 11319c9e68d9Seric { 11329c9e68d9Seric (void) close(rpvect[0]); 11336fe8c3bcSeric if (dup2(rpvect[1], STDOUT_FILENO) < 0) 11346fe8c3bcSeric { 11350e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdout", 11360e3bfef5Seric e->e_to, m->m_name, rpvect[1]); 11376fe8c3bcSeric _exit(EX_OSERR); 11386fe8c3bcSeric } 11399c9e68d9Seric (void) close(rpvect[1]); 11409c9e68d9Seric } 11419c9e68d9Seric else if (OpMode == MD_SMTP || HoldErrs) 11429c9e68d9Seric { 11439c9e68d9Seric /* put mailer output in transcript */ 11446fe8c3bcSeric if (dup2(fileno(e->e_xfp), STDOUT_FILENO) < 0) 11456fe8c3bcSeric { 11460e3bfef5Seric syserr("%s... openmailer(%s): cannot dup xscript %d for stdout", 11470e3bfef5Seric e->e_to, m->m_name, 11486fe8c3bcSeric fileno(e->e_xfp)); 11496fe8c3bcSeric _exit(EX_OSERR); 11509c9e68d9Seric } 11516fe8c3bcSeric } 11526fe8c3bcSeric if (dup2(STDOUT_FILENO, STDERR_FILENO) < 0) 11536fe8c3bcSeric { 11540e3bfef5Seric syserr("%s... openmailer(%s): cannot dup stdout for stderr", 11550e3bfef5Seric e->e_to, m->m_name); 11566fe8c3bcSeric _exit(EX_OSERR); 11576fe8c3bcSeric } 11589c9e68d9Seric 11599c9e68d9Seric /* arrange to get standard input */ 11609c9e68d9Seric (void) close(mpvect[1]); 11619c9e68d9Seric if (dup2(mpvect[0], STDIN_FILENO) < 0) 11629c9e68d9Seric { 11630e3bfef5Seric syserr("%s... openmailer(%s): cannot dup pipe %d for stdin", 11640e3bfef5Seric e->e_to, m->m_name, mpvect[0]); 11659c9e68d9Seric _exit(EX_OSERR); 11669c9e68d9Seric } 11679c9e68d9Seric (void) close(mpvect[0]); 11689c9e68d9Seric if (!bitnset(M_RESTR, m->m_flags)) 11699c9e68d9Seric { 11709c9e68d9Seric if (ctladdr == NULL || ctladdr->q_uid == 0) 11719c9e68d9Seric { 11729c9e68d9Seric (void) setgid(DefGid); 11739c9e68d9Seric (void) initgroups(DefUser, DefGid); 11749c9e68d9Seric (void) setuid(DefUid); 11759c9e68d9Seric } 11769c9e68d9Seric else 11779c9e68d9Seric { 11789c9e68d9Seric (void) setgid(ctladdr->q_gid); 11799c9e68d9Seric (void) initgroups(ctladdr->q_ruser? 11809c9e68d9Seric ctladdr->q_ruser: ctladdr->q_user, 11819c9e68d9Seric ctladdr->q_gid); 11829c9e68d9Seric (void) setuid(ctladdr->q_uid); 11839c9e68d9Seric } 11849c9e68d9Seric } 11859c9e68d9Seric 11869c9e68d9Seric /* arrange for all the files to be closed */ 11879c9e68d9Seric for (i = 3; i < DtableSize; i++) 11889c9e68d9Seric { 11899c9e68d9Seric register int j; 11909c9e68d9Seric if ((j = fcntl(i, F_GETFD, 0)) != -1) 11919c9e68d9Seric (void)fcntl(i, F_SETFD, j|1); 11929c9e68d9Seric } 11939c9e68d9Seric 11949c9e68d9Seric /* set up the mailer environment */ 11959c9e68d9Seric i = 0; 11969c9e68d9Seric env[i++] = "AGENT=sendmail"; 11979c9e68d9Seric for (ep = environ; *ep != NULL; ep++) 11989c9e68d9Seric { 11999c9e68d9Seric if (strncmp(*ep, "TZ=", 3) == 0) 12009c9e68d9Seric env[i++] = *ep; 12019c9e68d9Seric } 12029c9e68d9Seric env[i++] = NULL; 12039c9e68d9Seric 12049c9e68d9Seric /* try to execute the mailer */ 12059c9e68d9Seric execve(m->m_mailer, pv, env); 12069c9e68d9Seric saveerrno = errno; 12079c9e68d9Seric syserr("Cannot exec %s", m->m_mailer); 12089c9e68d9Seric if (m == LocalMailer) 12099c9e68d9Seric _exit(EX_TEMPFAIL); 12109c9e68d9Seric if (transienterror(saveerrno)) 12119c9e68d9Seric _exit(EX_TEMPFAIL); 12129c9e68d9Seric _exit(EX_UNAVAILABLE); 12139c9e68d9Seric } 12149c9e68d9Seric 12159c9e68d9Seric /* 12169c9e68d9Seric ** Set up return value. 12179c9e68d9Seric */ 12189c9e68d9Seric 12199c9e68d9Seric mci = (MCI *) xalloc(sizeof *mci); 12209c9e68d9Seric bzero((char *) mci, sizeof *mci); 12219c9e68d9Seric mci->mci_mailer = m; 12229c9e68d9Seric mci->mci_state = clever ? MCIS_OPENING : MCIS_OPEN; 12239c9e68d9Seric mci->mci_pid = pid; 12249c9e68d9Seric (void) close(mpvect[0]); 12259c9e68d9Seric mci->mci_out = fdopen(mpvect[1], "w"); 12269c9e68d9Seric if (clever) 12279c9e68d9Seric { 12289c9e68d9Seric (void) close(rpvect[1]); 12299c9e68d9Seric mci->mci_in = fdopen(rpvect[0], "r"); 12309c9e68d9Seric } 12319c9e68d9Seric else 12329c9e68d9Seric { 12339c9e68d9Seric mci->mci_flags |= MCIF_TEMP; 12349c9e68d9Seric mci->mci_in = NULL; 12359c9e68d9Seric } 12369c9e68d9Seric } 12379c9e68d9Seric 12389c9e68d9Seric /* 12399c9e68d9Seric ** If we are in SMTP opening state, send initial protocol. 12409c9e68d9Seric */ 12419c9e68d9Seric 12429c9e68d9Seric if (clever && mci->mci_state != MCIS_CLOSED) 12439c9e68d9Seric { 12449c9e68d9Seric smtpinit(m, mci, e); 12459c9e68d9Seric } 12469c9e68d9Seric if (tTd(11, 1)) 12479c9e68d9Seric { 12489c9e68d9Seric printf("openmailer: "); 12499c9e68d9Seric mci_dump(mci); 12509c9e68d9Seric } 12519c9e68d9Seric 12529c9e68d9Seric if (mci->mci_state != MCIS_OPEN) 1253b31e7f2bSeric { 1254b31e7f2bSeric /* couldn't open the mailer */ 1255b31e7f2bSeric rcode = mci->mci_exitstat; 12562a6bc25bSeric errno = mci->mci_errno; 1257b31e7f2bSeric if (rcode == EX_OK) 1258b31e7f2bSeric { 1259b31e7f2bSeric /* shouldn't happen */ 126008b25121Seric syserr("554 deliver: rcode=%d, mci_state=%d, sig=%s", 12616b0f339dSeric rcode, mci->mci_state, firstsig); 1262b31e7f2bSeric rcode = EX_SOFTWARE; 1263b31e7f2bSeric } 1264b31e7f2bSeric } 1265b31e7f2bSeric else if (!clever) 1266b31e7f2bSeric { 1267b31e7f2bSeric /* 1268b31e7f2bSeric ** Format and send message. 1269b31e7f2bSeric */ 127015d084d5Seric 1271b31e7f2bSeric putfromline(mci->mci_out, m, e); 1272b31e7f2bSeric (*e->e_puthdr)(mci->mci_out, m, e); 1273b31e7f2bSeric putline("\n", mci->mci_out, m); 1274b31e7f2bSeric (*e->e_putbody)(mci->mci_out, m, e); 1275b31e7f2bSeric 1276b31e7f2bSeric /* get the exit status */ 1277c9be6216Seric rcode = endmailer(mci, e, pv); 1278134746fbSeric } 1279134746fbSeric else 1280b31e7f2bSeric #ifdef SMTP 1281134746fbSeric { 1282b31e7f2bSeric /* 1283b31e7f2bSeric ** Send the MAIL FROM: protocol 1284b31e7f2bSeric */ 128515d084d5Seric 1286b31e7f2bSeric rcode = smtpmailfrom(m, mci, e); 1287b31e7f2bSeric if (rcode == EX_OK) 128875889e88Seric { 1289ded0d3daSkarels register char *t = tobuf; 1290ded0d3daSkarels register int i; 1291ded0d3daSkarels 1292588cad61Seric /* send the recipient list */ 129363780dbdSeric tobuf[0] = '\0'; 129475889e88Seric for (to = tochain; to != NULL; to = to->q_tchain) 129575889e88Seric { 129663780dbdSeric e->e_to = to->q_paddr; 129715d084d5Seric if ((i = smtprcpt(to, m, mci, e)) != EX_OK) 129875889e88Seric { 129983b7ddc9Seric markfailure(e, to, i); 130081161401Seric giveresponse(i, m, mci, e); 130163780dbdSeric } 130275889e88Seric else 130375889e88Seric { 1304911693bfSbostic *t++ = ','; 1305b31e7f2bSeric for (p = to->q_paddr; *p; *t++ = *p++) 1306b31e7f2bSeric continue; 1307588cad61Seric } 1308588cad61Seric } 1309588cad61Seric 131063780dbdSeric /* now send the data */ 131163780dbdSeric if (tobuf[0] == '\0') 1312b31e7f2bSeric { 13139c9e68d9Seric rcode = EX_OK; 131463780dbdSeric e->e_to = NULL; 1315b31e7f2bSeric if (bitset(MCIF_CACHED, mci->mci_flags)) 1316b31e7f2bSeric smtprset(m, mci, e); 1317b31e7f2bSeric } 131875889e88Seric else 131975889e88Seric { 132063780dbdSeric e->e_to = tobuf + 1; 132175889e88Seric rcode = smtpdata(m, mci, e); 132263780dbdSeric } 132363780dbdSeric 132463780dbdSeric /* now close the connection */ 1325b31e7f2bSeric if (!bitset(MCIF_CACHED, mci->mci_flags)) 132615d084d5Seric smtpquit(m, mci, e); 132763780dbdSeric } 13289c9e68d9Seric if (rcode != EX_OK && *curhost != '\0') 13299c9e68d9Seric { 13309c9e68d9Seric /* try next MX site */ 13319c9e68d9Seric goto tryhost; 13329c9e68d9Seric } 1333c579ef51Seric } 1334b31e7f2bSeric #else /* not SMTP */ 1335a05b3449Sbostic { 133608b25121Seric syserr("554 deliver: need SMTP compiled to use clever mailer"); 1337845e533cSeric rcode = EX_CONFIG; 1338b31e7f2bSeric goto give_up; 1339a05b3449Sbostic } 1340b31e7f2bSeric #endif /* SMTP */ 1341134746fbSeric #ifdef NAMED_BIND 13422bcc6d2dSeric if (ConfigLevel < 2) 1343912a731aSbostic _res.options |= RES_DEFNAMES | RES_DNSRCH; /* XXX */ 1344134746fbSeric #endif 13455dfc646bSeric 1346b31e7f2bSeric /* arrange a return receipt if requested */ 13478c13bf07Seric if (e->e_receiptto != NULL && bitnset(M_LOCALMAILER, m->m_flags)) 1348b31e7f2bSeric { 1349b31e7f2bSeric e->e_flags |= EF_SENDRECEIPT; 1350b31e7f2bSeric /* do we want to send back more info? */ 1351b31e7f2bSeric } 1352b31e7f2bSeric 1353c77d1c25Seric /* 135463780dbdSeric ** Do final status disposal. 135563780dbdSeric ** We check for something in tobuf for the SMTP case. 1356c77d1c25Seric ** If we got a temporary failure, arrange to queue the 1357c77d1c25Seric ** addressees. 1358c77d1c25Seric */ 1359c77d1c25Seric 1360b31e7f2bSeric give_up: 136163780dbdSeric if (tobuf[0] != '\0') 136281161401Seric giveresponse(rcode, m, mci, e); 1363772e6e50Seric for (to = tochain; to != NULL; to = to->q_tchain) 1364b31e7f2bSeric { 1365dde5acadSeric if (rcode != EX_OK) 136683b7ddc9Seric markfailure(e, to, rcode); 1367dde5acadSeric else 1368655518ecSeric { 1369dde5acadSeric to->q_flags |= QSENT; 1370655518ecSeric e->e_nsent++; 1371655518ecSeric } 1372b31e7f2bSeric } 1373b31e7f2bSeric 1374b31e7f2bSeric /* 1375b31e7f2bSeric ** Restore state and return. 1376b31e7f2bSeric */ 1377c77d1c25Seric 137835490626Seric errno = 0; 1379588cad61Seric define('g', (char *) NULL, e); 13805826d9d3Seric return (rcode); 138125a99e2eSeric } 13825dfc646bSeric /* 138383b7ddc9Seric ** MARKFAILURE -- mark a failure on a specific address. 138483b7ddc9Seric ** 138583b7ddc9Seric ** Parameters: 138683b7ddc9Seric ** e -- the envelope we are sending. 138783b7ddc9Seric ** q -- the address to mark. 138883b7ddc9Seric ** rcode -- the code signifying the particular failure. 138983b7ddc9Seric ** 139083b7ddc9Seric ** Returns: 139183b7ddc9Seric ** none. 139283b7ddc9Seric ** 139383b7ddc9Seric ** Side Effects: 139483b7ddc9Seric ** marks the address (and possibly the envelope) with the 139583b7ddc9Seric ** failure so that an error will be returned or 139683b7ddc9Seric ** the message will be queued, as appropriate. 139783b7ddc9Seric */ 139883b7ddc9Seric 139983b7ddc9Seric markfailure(e, q, rcode) 140083b7ddc9Seric register ENVELOPE *e; 140183b7ddc9Seric register ADDRESS *q; 140283b7ddc9Seric int rcode; 140383b7ddc9Seric { 140419c47125Seric char buf[MAXLINE]; 140519c47125Seric extern char *pintvl(); 140619c47125Seric 140783b7ddc9Seric if (rcode == EX_OK) 140883b7ddc9Seric return; 1409ef137175Sbostic else if (rcode != EX_TEMPFAIL && rcode != EX_IOERR && rcode != EX_OSERR) 141083b7ddc9Seric q->q_flags |= QBADADDR; 141119c47125Seric else if (curtime() > e->e_ctime + TimeOuts.to_q_return) 141283b7ddc9Seric { 141383b7ddc9Seric if (!bitset(EF_TIMEOUT, e->e_flags)) 1414198d9be0Seric { 1415198d9be0Seric (void) sprintf(buf, "Cannot send message for %s", 141619c47125Seric pintvl(TimeOuts.to_q_return, FALSE)); 1417198d9be0Seric if (e->e_message != NULL) 1418198d9be0Seric free(e->e_message); 1419198d9be0Seric e->e_message = newstr(buf); 142008b25121Seric message(buf); 1421198d9be0Seric } 142283b7ddc9Seric q->q_flags |= QBADADDR; 142383b7ddc9Seric e->e_flags |= EF_TIMEOUT; 1424c13b5dfcSeric fprintf(e->e_xfp, "421 %s... Message timed out\n", q->q_paddr); 142583b7ddc9Seric } 142683b7ddc9Seric else 142719c47125Seric { 142883b7ddc9Seric q->q_flags |= QQUEUEUP; 142919c47125Seric if (TimeOuts.to_q_warning > 0 && 143019c47125Seric curtime() > e->e_ctime + TimeOuts.to_q_warning) 143119c47125Seric { 143219c47125Seric if (!bitset(EF_WARNING, e->e_flags) && 143319c47125Seric e->e_class >= 0) 143419c47125Seric { 143519c47125Seric (void) sprintf(buf, 143619c47125Seric "warning: cannot send message for %s", 143719c47125Seric pintvl(TimeOuts.to_q_warning, FALSE)); 143819c47125Seric if (e->e_message != NULL) 143919c47125Seric free(e->e_message); 144019c47125Seric e->e_message = newstr(buf); 144119c47125Seric message(buf); 144219c47125Seric e->e_flags |= EF_WARNING|EF_TIMEOUT; 144319c47125Seric } 144419c47125Seric fprintf(e->e_xfp, 144519c47125Seric "%s... Warning: message still undelivered after %s\n", 144619c47125Seric q->q_paddr, pintvl(TimeOuts.to_q_warning, FALSE)); 144719c47125Seric fprintf(e->e_xfp, "Will keep trying until message is %s old\n", 144819c47125Seric pintvl(TimeOuts.to_q_return, FALSE)); 144919c47125Seric } 145019c47125Seric } 145183b7ddc9Seric } 145283b7ddc9Seric /* 1453c579ef51Seric ** ENDMAILER -- Wait for mailer to terminate. 1454c579ef51Seric ** 1455c579ef51Seric ** We should never get fatal errors (e.g., segmentation 1456c579ef51Seric ** violation), so we report those specially. For other 1457c579ef51Seric ** errors, we choose a status message (into statmsg), 1458c579ef51Seric ** and if it represents an error, we print it. 1459c579ef51Seric ** 1460c579ef51Seric ** Parameters: 1461c579ef51Seric ** pid -- pid of mailer. 1462c9be6216Seric ** e -- the current envelope. 1463c9be6216Seric ** pv -- the parameter vector that invoked the mailer 1464c9be6216Seric ** (for error messages). 1465c579ef51Seric ** 1466c579ef51Seric ** Returns: 1467c579ef51Seric ** exit code of mailer. 1468c579ef51Seric ** 1469c579ef51Seric ** Side Effects: 1470c579ef51Seric ** none. 1471c579ef51Seric */ 1472c579ef51Seric 1473c9be6216Seric endmailer(mci, e, pv) 1474b31e7f2bSeric register MCI *mci; 1475c9be6216Seric register ENVELOPE *e; 1476c9be6216Seric char **pv; 1477c579ef51Seric { 1478588cad61Seric int st; 1479c579ef51Seric 148075889e88Seric /* close any connections */ 148175889e88Seric if (mci->mci_in != NULL) 1482c9be6216Seric (void) xfclose(mci->mci_in, pv[0], "mci_in"); 148375889e88Seric if (mci->mci_out != NULL) 1484c9be6216Seric (void) xfclose(mci->mci_out, pv[0], "mci_out"); 148575889e88Seric mci->mci_in = mci->mci_out = NULL; 148675889e88Seric mci->mci_state = MCIS_CLOSED; 148775889e88Seric 148833db8731Seric /* in the IPC case there is nothing to wait for */ 148975889e88Seric if (mci->mci_pid == 0) 149033db8731Seric return (EX_OK); 149133db8731Seric 149233db8731Seric /* wait for the mailer process to die and collect status */ 149375889e88Seric st = waitfor(mci->mci_pid); 1494588cad61Seric if (st == -1) 149578de67c1Seric { 1496c9be6216Seric syserr("endmailer %s: wait", pv[0]); 1497588cad61Seric return (EX_SOFTWARE); 1498c579ef51Seric } 149933db8731Seric 150033db8731Seric /* see if it died a horrid death */ 1501c579ef51Seric if ((st & 0377) != 0) 1502c579ef51Seric { 1503c9be6216Seric syserr("mailer %s died with signal %o", pv[0], st); 1504c9be6216Seric 1505c9be6216Seric /* log the arguments */ 1506c9be6216Seric if (e->e_xfp != NULL) 1507c9be6216Seric { 1508c9be6216Seric register char **av; 1509c9be6216Seric 1510c9be6216Seric fprintf(e->e_xfp, "Arguments:"); 1511c9be6216Seric for (av = pv; *av != NULL; av++) 1512c9be6216Seric fprintf(e->e_xfp, " %s", *av); 1513c9be6216Seric fprintf(e->e_xfp, "\n"); 1514c9be6216Seric } 1515c9be6216Seric 15165f73204aSeric ExitStat = EX_TEMPFAIL; 15175f73204aSeric return (EX_TEMPFAIL); 1518c579ef51Seric } 151933db8731Seric 152033db8731Seric /* normal death -- return status */ 1521588cad61Seric st = (st >> 8) & 0377; 1522588cad61Seric return (st); 1523c579ef51Seric } 1524c579ef51Seric /* 152525a99e2eSeric ** GIVERESPONSE -- Interpret an error response from a mailer 152625a99e2eSeric ** 152725a99e2eSeric ** Parameters: 152825a99e2eSeric ** stat -- the status code from the mailer (high byte 152925a99e2eSeric ** only; core dumps must have been taken care of 153025a99e2eSeric ** already). 153181161401Seric ** m -- the mailer info for this mailer. 153281161401Seric ** mci -- the mailer connection info -- can be NULL if the 153381161401Seric ** response is given before the connection is made. 153481161401Seric ** e -- the current envelope. 153525a99e2eSeric ** 153625a99e2eSeric ** Returns: 1537db8841e9Seric ** none. 153825a99e2eSeric ** 153925a99e2eSeric ** Side Effects: 1540c1f9df2cSeric ** Errors may be incremented. 154125a99e2eSeric ** ExitStat may be set. 154225a99e2eSeric */ 154325a99e2eSeric 154481161401Seric giveresponse(stat, m, mci, e) 154525a99e2eSeric int stat; 1546588cad61Seric register MAILER *m; 154781161401Seric register MCI *mci; 1548198d9be0Seric ENVELOPE *e; 154925a99e2eSeric { 155025a99e2eSeric register char *statmsg; 155125a99e2eSeric extern char *SysExMsg[]; 155225a99e2eSeric register int i; 1553d4bd8f0eSbostic extern int N_SysEx; 1554d4bd8f0eSbostic #ifdef NAMED_BIND 1555d4bd8f0eSbostic extern int h_errno; 1556d4bd8f0eSbostic #endif 1557198d9be0Seric char buf[MAXLINE]; 15587d55540cSeric extern char *errstring(); 155925a99e2eSeric 156013bbc08cSeric /* 156113bbc08cSeric ** Compute status message from code. 156213bbc08cSeric */ 156313bbc08cSeric 156425a99e2eSeric i = stat - EX__BASE; 1565588cad61Seric if (stat == 0) 15666fe8c3bcSeric { 1567588cad61Seric statmsg = "250 Sent"; 1568ce5531bdSeric if (e->e_statmsg != NULL) 15696fe8c3bcSeric { 1570ce5531bdSeric (void) sprintf(buf, "%s (%s)", statmsg, e->e_statmsg); 15716fe8c3bcSeric statmsg = buf; 15726fe8c3bcSeric } 15736fe8c3bcSeric } 1574588cad61Seric else if (i < 0 || i > N_SysEx) 1575588cad61Seric { 1576588cad61Seric (void) sprintf(buf, "554 unknown mailer error %d", stat); 1577588cad61Seric stat = EX_UNAVAILABLE; 1578588cad61Seric statmsg = buf; 1579588cad61Seric } 1580198d9be0Seric else if (stat == EX_TEMPFAIL) 1581198d9be0Seric { 15827d55540cSeric (void) strcpy(buf, SysExMsg[i] + 1); 1583d4bd8f0eSbostic #ifdef NAMED_BIND 1584f28da541Smiriam if (h_errno == TRY_AGAIN) 1585f28da541Smiriam statmsg = errstring(h_errno+MAX_ERRNO); 1586f28da541Smiriam else 1587d4bd8f0eSbostic #endif 1588f28da541Smiriam { 15898557d168Seric if (errno != 0) 1590d87e85f3Seric statmsg = errstring(errno); 1591d87e85f3Seric else 1592d87e85f3Seric { 1593d87e85f3Seric #ifdef SMTP 1594d87e85f3Seric extern char SmtpError[]; 1595d87e85f3Seric 1596d87e85f3Seric statmsg = SmtpError; 15976c2c3107Seric #else /* SMTP */ 1598d87e85f3Seric statmsg = NULL; 15996c2c3107Seric #endif /* SMTP */ 1600d87e85f3Seric } 1601f28da541Smiriam } 1602d87e85f3Seric if (statmsg != NULL && statmsg[0] != '\0') 1603d87e85f3Seric { 160487c9b3e7Seric (void) strcat(buf, ": "); 1605d87e85f3Seric (void) strcat(buf, statmsg); 16068557d168Seric } 1607198d9be0Seric statmsg = buf; 1608198d9be0Seric } 160925a99e2eSeric else 1610d87e85f3Seric { 161125a99e2eSeric statmsg = SysExMsg[i]; 16127d55540cSeric if (*statmsg++ == ':') 16137d55540cSeric { 16147d55540cSeric (void) sprintf(buf, "%s: %s", statmsg, errstring(errno)); 16157d55540cSeric statmsg = buf; 16167d55540cSeric } 1617d87e85f3Seric } 1618588cad61Seric 1619588cad61Seric /* 1620588cad61Seric ** Print the message as appropriate 1621588cad61Seric */ 1622588cad61Seric 1623198d9be0Seric if (stat == EX_OK || stat == EX_TEMPFAIL) 1624e12d03eeSeric message(&statmsg[4], errstring(errno)); 162525a99e2eSeric else 162625a99e2eSeric { 1627c1f9df2cSeric Errors++; 1628e12d03eeSeric usrerr(statmsg, errstring(errno)); 162925a99e2eSeric } 163025a99e2eSeric 163125a99e2eSeric /* 163225a99e2eSeric ** Final cleanup. 163325a99e2eSeric ** Log a record of the transaction. Compute the new 163425a99e2eSeric ** ExitStat -- if we already had an error, stick with 163525a99e2eSeric ** that. 163625a99e2eSeric */ 163725a99e2eSeric 16382f624c86Seric if (LogLevel > ((stat == EX_TEMPFAIL) ? 8 : (stat == EX_OK) ? 7 : 6)) 163981161401Seric logdelivery(m, mci, &statmsg[4], e); 1640eb238f8cSeric 1641eb238f8cSeric if (stat != EX_TEMPFAIL) 1642eb238f8cSeric setstat(stat); 1643198d9be0Seric if (stat != EX_OK) 1644198d9be0Seric { 1645198d9be0Seric if (e->e_message != NULL) 1646198d9be0Seric free(e->e_message); 1647198d9be0Seric e->e_message = newstr(&statmsg[4]); 1648198d9be0Seric } 16498557d168Seric errno = 0; 1650d4bd8f0eSbostic #ifdef NAMED_BIND 1651f28da541Smiriam h_errno = 0; 1652d4bd8f0eSbostic #endif 1653eb238f8cSeric } 1654eb238f8cSeric /* 1655eb238f8cSeric ** LOGDELIVERY -- log the delivery in the system log 1656eb238f8cSeric ** 1657eb238f8cSeric ** Parameters: 165881161401Seric ** m -- the mailer info. Can be NULL for initial queue. 165981161401Seric ** mci -- the mailer connection info -- can be NULL if the 166081161401Seric ** log is occuring when no connection is active. 166181161401Seric ** stat -- the message to print for the status. 166281161401Seric ** e -- the current envelope. 1663eb238f8cSeric ** 1664eb238f8cSeric ** Returns: 1665eb238f8cSeric ** none 1666eb238f8cSeric ** 1667eb238f8cSeric ** Side Effects: 1668eb238f8cSeric ** none 1669eb238f8cSeric */ 1670eb238f8cSeric 167181161401Seric logdelivery(m, mci, stat, e) 167281161401Seric MAILER *m; 167381161401Seric register MCI *mci; 1674eb238f8cSeric char *stat; 1675b31e7f2bSeric register ENVELOPE *e; 16765cf56be3Seric { 1677eb238f8cSeric # ifdef LOG 16789507d1f9Seric char *curhost; 1679d6acf3eeSeric char buf[512]; 16809507d1f9Seric extern char *pintvl(); 16819507d1f9Seric extern char *macvalue(); 16829507d1f9Seric 168348ed5d33Seric (void) sprintf(buf, "delay=%s", pintvl(curtime() - e->e_ctime, TRUE)); 168481161401Seric 168548ed5d33Seric if (m != NULL) 168671ff6caaSeric { 168748ed5d33Seric (void) strcat(buf, ", mailer="); 168848ed5d33Seric (void) strcat(buf, m->m_name); 168971ff6caaSeric } 169048ed5d33Seric 169148ed5d33Seric if (mci != NULL && mci->mci_host != NULL) 169271ff6caaSeric { 169371ff6caaSeric # ifdef DAEMON 1694e2f2f828Seric extern SOCKADDR CurHostAddr; 1695e2f2f828Seric extern char *anynet_ntoa(); 169648ed5d33Seric # endif 169771ff6caaSeric 169848ed5d33Seric (void) strcat(buf, ", relay="); 169948ed5d33Seric (void) strcat(buf, mci->mci_host); 170048ed5d33Seric 170148ed5d33Seric # ifdef DAEMON 170248ed5d33Seric (void) strcat(buf, " ("); 1703e2f2f828Seric (void) strcat(buf, anynet_ntoa(&CurHostAddr)); 170448ed5d33Seric (void) strcat(buf, ")"); 170571ff6caaSeric # endif 170671ff6caaSeric } 17079507d1f9Seric else 170848ed5d33Seric { 170948ed5d33Seric char *p = macvalue('h', e); 17109507d1f9Seric 171148ed5d33Seric if (p != NULL && p[0] != '\0') 171248ed5d33Seric { 171348ed5d33Seric (void) strcat(buf, ", relay="); 171448ed5d33Seric (void) strcat(buf, p); 171548ed5d33Seric } 171648ed5d33Seric } 1717d6acf3eeSeric 1718d6acf3eeSeric syslog(LOG_INFO, "%s: to=%s, %s, stat=%s", 1719d6acf3eeSeric e->e_id, e->e_to, buf, stat); 17206c2c3107Seric # endif /* LOG */ 172125a99e2eSeric } 172225a99e2eSeric /* 172351552439Seric ** PUTFROMLINE -- output a UNIX-style from line (or whatever) 172425a99e2eSeric ** 172551552439Seric ** This can be made an arbitrary message separator by changing $l 172651552439Seric ** 17279b6c17a6Seric ** One of the ugliest hacks seen by human eyes is contained herein: 17289b6c17a6Seric ** UUCP wants those stupid "remote from <host>" lines. Why oh why 17299b6c17a6Seric ** does a well-meaning programmer such as myself have to deal with 17309b6c17a6Seric ** this kind of antique garbage???? 173125a99e2eSeric ** 173225a99e2eSeric ** Parameters: 173351552439Seric ** fp -- the file to output to. 173451552439Seric ** m -- the mailer describing this entry. 173525a99e2eSeric ** 173625a99e2eSeric ** Returns: 173751552439Seric ** none 173825a99e2eSeric ** 173925a99e2eSeric ** Side Effects: 174051552439Seric ** outputs some text to fp. 174125a99e2eSeric */ 174225a99e2eSeric 1743b31e7f2bSeric putfromline(fp, m, e) 174451552439Seric register FILE *fp; 174551552439Seric register MAILER *m; 1746b31e7f2bSeric ENVELOPE *e; 174725a99e2eSeric { 17482bc47524Seric char *template = "\201l\n"; 174951552439Seric char buf[MAXLINE]; 175025a99e2eSeric 175157fc6f17Seric if (bitnset(M_NHDR, m->m_flags)) 175251552439Seric return; 175313bbc08cSeric 17542c7e1b8dSeric # ifdef UGLYUUCP 175557fc6f17Seric if (bitnset(M_UGLYUUCP, m->m_flags)) 175674b6e67bSeric { 1757ea09d6edSeric char *bang; 1758ea09d6edSeric char xbuf[MAXLINE]; 175974b6e67bSeric 1760ee4b0922Seric expand("\201g", buf, &buf[sizeof buf - 1], e); 17616c2c3107Seric bang = strchr(buf, '!'); 176274b6e67bSeric if (bang == NULL) 176308b25121Seric syserr("554 No ! in UUCP! (%s)", buf); 176474b6e67bSeric else 1765588cad61Seric { 1766ea09d6edSeric *bang++ = '\0'; 17672bc47524Seric (void) sprintf(xbuf, "From %s \201d remote from %s\n", bang, buf); 1768ea09d6edSeric template = xbuf; 176974b6e67bSeric } 1770588cad61Seric } 17716c2c3107Seric # endif /* UGLYUUCP */ 1772b31e7f2bSeric expand(template, buf, &buf[sizeof buf - 1], e); 177377b52738Seric putline(buf, fp, m); 1774bc6e2962Seric } 1775bc6e2962Seric /* 177651552439Seric ** PUTBODY -- put the body of a message. 177751552439Seric ** 177851552439Seric ** Parameters: 177951552439Seric ** fp -- file to output onto. 178077b52738Seric ** m -- a mailer descriptor to control output format. 17819a6a5f55Seric ** e -- the envelope to put out. 178251552439Seric ** 178351552439Seric ** Returns: 178451552439Seric ** none. 178551552439Seric ** 178651552439Seric ** Side Effects: 178751552439Seric ** The message is written onto fp. 178851552439Seric */ 178951552439Seric 179077b52738Seric putbody(fp, m, e) 179151552439Seric FILE *fp; 1792588cad61Seric MAILER *m; 17939a6a5f55Seric register ENVELOPE *e; 179451552439Seric { 179577b52738Seric char buf[MAXLINE]; 179651552439Seric 179751552439Seric /* 179851552439Seric ** Output the body of the message 179951552439Seric */ 180051552439Seric 18019a6a5f55Seric if (e->e_dfp == NULL) 180251552439Seric { 18039a6a5f55Seric if (e->e_df != NULL) 18049a6a5f55Seric { 18059a6a5f55Seric e->e_dfp = fopen(e->e_df, "r"); 18069a6a5f55Seric if (e->e_dfp == NULL) 18078f9146b0Srick syserr("putbody: Cannot open %s for %s from %s", 18088f9146b0Srick e->e_df, e->e_to, e->e_from); 18099a6a5f55Seric } 18109a6a5f55Seric else 181177b52738Seric putline("<<< No Message Collected >>>", fp, m); 18129a6a5f55Seric } 18139a6a5f55Seric if (e->e_dfp != NULL) 18149a6a5f55Seric { 18159a6a5f55Seric rewind(e->e_dfp); 181677b52738Seric while (!ferror(fp) && fgets(buf, sizeof buf, e->e_dfp) != NULL) 181724fc8aeeSeric { 181824fc8aeeSeric if (buf[0] == 'F' && bitnset(M_ESCFROM, m->m_flags) && 1819d6fa2b58Sbostic strncmp(buf, "From ", 5) == 0) 18203462ad9eSeric (void) putc('>', fp); 182177b52738Seric putline(buf, fp, m); 182224fc8aeeSeric } 182351552439Seric 18249a6a5f55Seric if (ferror(e->e_dfp)) 182551552439Seric { 182651552439Seric syserr("putbody: read error"); 182751552439Seric ExitStat = EX_IOERR; 182851552439Seric } 182951552439Seric } 183051552439Seric 183151552439Seric (void) fflush(fp); 183251552439Seric if (ferror(fp) && errno != EPIPE) 183351552439Seric { 183451552439Seric syserr("putbody: write error"); 183551552439Seric ExitStat = EX_IOERR; 183651552439Seric } 183751552439Seric errno = 0; 183825a99e2eSeric } 183925a99e2eSeric /* 184025a99e2eSeric ** MAILFILE -- Send a message to a file. 184125a99e2eSeric ** 1842f129ec7dSeric ** If the file has the setuid/setgid bits set, but NO execute 1843f129ec7dSeric ** bits, sendmail will try to become the owner of that file 1844f129ec7dSeric ** rather than the real user. Obviously, this only works if 1845f129ec7dSeric ** sendmail runs as root. 1846f129ec7dSeric ** 1847588cad61Seric ** This could be done as a subordinate mailer, except that it 1848588cad61Seric ** is used implicitly to save messages in ~/dead.letter. We 1849588cad61Seric ** view this as being sufficiently important as to include it 1850588cad61Seric ** here. For example, if the system is dying, we shouldn't have 1851588cad61Seric ** to create another process plus some pipes to save the message. 1852588cad61Seric ** 185325a99e2eSeric ** Parameters: 185425a99e2eSeric ** filename -- the name of the file to send to. 18556259796dSeric ** ctladdr -- the controlling address header -- includes 18566259796dSeric ** the userid/groupid to be when sending. 185725a99e2eSeric ** 185825a99e2eSeric ** Returns: 185925a99e2eSeric ** The exit code associated with the operation. 186025a99e2eSeric ** 186125a99e2eSeric ** Side Effects: 186225a99e2eSeric ** none. 186325a99e2eSeric */ 186425a99e2eSeric 1865b31e7f2bSeric mailfile(filename, ctladdr, e) 186625a99e2eSeric char *filename; 18676259796dSeric ADDRESS *ctladdr; 1868b31e7f2bSeric register ENVELOPE *e; 186925a99e2eSeric { 187025a99e2eSeric register FILE *f; 187132d19d43Seric register int pid; 187215d084d5Seric int mode; 187325a99e2eSeric 187432d19d43Seric /* 187532d19d43Seric ** Fork so we can change permissions here. 187632d19d43Seric ** Note that we MUST use fork, not vfork, because of 187732d19d43Seric ** the complications of calling subroutines, etc. 187832d19d43Seric */ 187932d19d43Seric 188032d19d43Seric DOFORK(fork); 188132d19d43Seric 188232d19d43Seric if (pid < 0) 188332d19d43Seric return (EX_OSERR); 188432d19d43Seric else if (pid == 0) 188532d19d43Seric { 188632d19d43Seric /* child -- actually write to file */ 1887f129ec7dSeric struct stat stb; 1888f129ec7dSeric 18890984da9fSeric (void) signal(SIGINT, SIG_DFL); 18900984da9fSeric (void) signal(SIGHUP, SIG_DFL); 18910984da9fSeric (void) signal(SIGTERM, SIG_DFL); 18923462ad9eSeric (void) umask(OldUmask); 189395f16dc0Seric 1894f129ec7dSeric if (stat(filename, &stb) < 0) 1895e6e1265fSeric stb.st_mode = 0666; 189615d084d5Seric mode = stb.st_mode; 189795f16dc0Seric 189895f16dc0Seric /* limit the errors to those actually caused in the child */ 189995f16dc0Seric errno = 0; 190095f16dc0Seric ExitStat = EX_OK; 190195f16dc0Seric 1902f129ec7dSeric if (bitset(0111, stb.st_mode)) 1903f129ec7dSeric exit(EX_CANTCREAT); 190403827b5fSeric if (ctladdr == NULL) 19058f9146b0Srick ctladdr = &e->e_from; 190615d084d5Seric else 190715d084d5Seric { 190815d084d5Seric /* ignore setuid and setgid bits */ 190915d084d5Seric mode &= ~(S_ISGID|S_ISUID); 191015d084d5Seric } 191115d084d5Seric 19128f9146b0Srick /* we have to open the dfile BEFORE setuid */ 19138f9146b0Srick if (e->e_dfp == NULL && e->e_df != NULL) 19148f9146b0Srick { 19158f9146b0Srick e->e_dfp = fopen(e->e_df, "r"); 191695f16dc0Seric if (e->e_dfp == NULL) 191795f16dc0Seric { 19188f9146b0Srick syserr("mailfile: Cannot open %s for %s from %s", 19198f9146b0Srick e->e_df, e->e_to, e->e_from); 19208f9146b0Srick } 19218f9146b0Srick } 19228f9146b0Srick 192315d084d5Seric if (!bitset(S_ISGID, mode) || setgid(stb.st_gid) < 0) 1924e36b99e2Seric { 192595f16dc0Seric if (ctladdr->q_uid == 0) 192695f16dc0Seric { 1927e36b99e2Seric (void) setgid(DefGid); 1928898a126bSbostic (void) initgroups(DefUser, DefGid); 192995f16dc0Seric } 193095f16dc0Seric else 193195f16dc0Seric { 19326259796dSeric (void) setgid(ctladdr->q_gid); 1933898a126bSbostic (void) initgroups(ctladdr->q_ruser ? 1934898a126bSbostic ctladdr->q_ruser : ctladdr->q_user, 1935898a126bSbostic ctladdr->q_gid); 1936898a126bSbostic } 1937e36b99e2Seric } 193815d084d5Seric if (!bitset(S_ISUID, mode) || setuid(stb.st_uid) < 0) 1939e36b99e2Seric { 1940e36b99e2Seric if (ctladdr->q_uid == 0) 1941e36b99e2Seric (void) setuid(DefUid); 1942e36b99e2Seric else 19436259796dSeric (void) setuid(ctladdr->q_uid); 1944e36b99e2Seric } 194595f16dc0Seric FileName = filename; 194695f16dc0Seric LineNumber = 0; 194727628d59Seric f = dfopen(filename, "a"); 194825a99e2eSeric if (f == NULL) 194995f16dc0Seric { 195008b25121Seric message("554 cannot open"); 195132d19d43Seric exit(EX_CANTCREAT); 195295f16dc0Seric } 195325a99e2eSeric 1954b31e7f2bSeric putfromline(f, ProgMailer, e); 1955b843d759Seric (*e->e_puthdr)(f, ProgMailer, e); 195677b52738Seric putline("\n", f, ProgMailer); 1957b843d759Seric (*e->e_putbody)(f, ProgMailer, e); 195877b52738Seric putline("\n", f, ProgMailer); 195995f16dc0Seric if (ferror(f)) 196095f16dc0Seric { 196108b25121Seric message("451 I/O error"); 196295f16dc0Seric setstat(EX_IOERR); 196395f16dc0Seric } 1964ee4b0922Seric (void) xfclose(f, "mailfile", filename); 196532d19d43Seric (void) fflush(stdout); 1966e36b99e2Seric 196727628d59Seric /* reset ISUID & ISGID bits for paranoid systems */ 1968c77d1c25Seric (void) chmod(filename, (int) stb.st_mode); 196995f16dc0Seric exit(ExitStat); 197013bbc08cSeric /*NOTREACHED*/ 197132d19d43Seric } 197232d19d43Seric else 197332d19d43Seric { 197432d19d43Seric /* parent -- wait for exit status */ 1975588cad61Seric int st; 197632d19d43Seric 1977588cad61Seric st = waitfor(pid); 1978588cad61Seric if ((st & 0377) != 0) 1979588cad61Seric return (EX_UNAVAILABLE); 1980588cad61Seric else 1981588cad61Seric return ((st >> 8) & 0377); 19828f9146b0Srick /*NOTREACHED*/ 198332d19d43Seric } 198425a99e2eSeric } 1985ea4dc939Seric /* 1986e103b48fSeric ** HOSTSIGNATURE -- return the "signature" for a host. 1987e103b48fSeric ** 1988e103b48fSeric ** The signature describes how we are going to send this -- it 1989e103b48fSeric ** can be just the hostname (for non-Internet hosts) or can be 1990e103b48fSeric ** an ordered list of MX hosts. 1991e103b48fSeric ** 1992e103b48fSeric ** Parameters: 1993e103b48fSeric ** m -- the mailer describing this host. 1994e103b48fSeric ** host -- the host name. 1995e103b48fSeric ** e -- the current envelope. 1996e103b48fSeric ** 1997e103b48fSeric ** Returns: 1998e103b48fSeric ** The signature for this host. 1999e103b48fSeric ** 2000e103b48fSeric ** Side Effects: 2001e103b48fSeric ** Can tweak the symbol table. 2002e103b48fSeric */ 2003e103b48fSeric 2004e103b48fSeric char * 2005e103b48fSeric hostsignature(m, host, e) 2006e103b48fSeric register MAILER *m; 2007e103b48fSeric char *host; 2008e103b48fSeric ENVELOPE *e; 2009e103b48fSeric { 2010e103b48fSeric register char *p; 2011e103b48fSeric register STAB *s; 2012e103b48fSeric int i; 2013e103b48fSeric int len; 2014e103b48fSeric #ifdef NAMED_BIND 2015e103b48fSeric int nmx; 2016e103b48fSeric auto int rcode; 2017bafdc4e5Seric char *hp; 2018bafdc4e5Seric char *endp; 2019*516782b4Seric int oldoptions; 2020e103b48fSeric char *mxhosts[MAXMXHOSTS + 1]; 2021e103b48fSeric static char myhostbuf[MAXNAME]; 2022e103b48fSeric #endif 2023e103b48fSeric 2024e103b48fSeric /* 2025e103b48fSeric ** Check to see if this uses IPC -- if not, it can't have MX records. 2026e103b48fSeric */ 2027e103b48fSeric 2028e103b48fSeric p = m->m_mailer; 2029e103b48fSeric if (strcmp(p, "[IPC]") != 0 && strcmp(p, "[TCP]") != 0) 2030e103b48fSeric { 2031e103b48fSeric /* just an ordinary mailer */ 2032e103b48fSeric return host; 2033e103b48fSeric } 2034e103b48fSeric 2035e103b48fSeric /* 2036e103b48fSeric ** If it is a numeric address, just return it. 2037e103b48fSeric */ 2038e103b48fSeric 2039e103b48fSeric if (host[0] == '[') 2040e103b48fSeric return host; 2041e103b48fSeric 2042e103b48fSeric /* 2043e103b48fSeric ** Look it up in the symbol table. 2044e103b48fSeric */ 2045e103b48fSeric 2046e103b48fSeric s = stab(host, ST_HOSTSIG, ST_ENTER); 2047e103b48fSeric if (s->s_hostsig != NULL) 2048e103b48fSeric return s->s_hostsig; 2049e103b48fSeric 2050e103b48fSeric /* 2051e103b48fSeric ** Not already there -- create a signature. 2052e103b48fSeric */ 2053e103b48fSeric 2054e103b48fSeric #ifdef NAMED_BIND 2055*516782b4Seric if (ConfigLevel < 2) 2056*516782b4Seric { 2057*516782b4Seric oldoptions = _res.options; 2058*516782b4Seric _res.options &= ~(RES_DEFNAMES | RES_DNSRCH); /* XXX */ 2059*516782b4Seric } 2060*516782b4Seric 2061e103b48fSeric if (myhostbuf[0] == '\0') 20622bc47524Seric expand("\201j", myhostbuf, &myhostbuf[sizeof myhostbuf - 1], e); 2063e103b48fSeric 2064bafdc4e5Seric for (hp = host; hp != NULL; hp = endp) 2065bafdc4e5Seric { 2066bafdc4e5Seric endp = strchr(hp, ':'); 2067bafdc4e5Seric if (endp != NULL) 2068bafdc4e5Seric *endp = '\0'; 2069bafdc4e5Seric 2070bafdc4e5Seric nmx = getmxrr(hp, mxhosts, myhostbuf, &rcode); 20717d55540cSeric 2072e103b48fSeric if (nmx <= 0) 2073e103b48fSeric { 2074e103b48fSeric register MCI *mci; 2075e103b48fSeric extern int errno; 2076e103b48fSeric extern MCI *mci_get(); 2077e103b48fSeric 2078e103b48fSeric /* update the connection info for this host */ 2079bafdc4e5Seric mci = mci_get(hp, m); 2080e103b48fSeric mci->mci_exitstat = rcode; 2081e103b48fSeric mci->mci_errno = errno; 2082e103b48fSeric 2083e103b48fSeric /* and return the original host name as the signature */ 2084bafdc4e5Seric nmx = 1; 2085bafdc4e5Seric mxhosts[0] = hp; 2086e103b48fSeric } 2087e103b48fSeric 2088e103b48fSeric len = 0; 2089e103b48fSeric for (i = 0; i < nmx; i++) 2090e103b48fSeric { 2091e103b48fSeric len += strlen(mxhosts[i]) + 1; 2092e103b48fSeric } 2093bafdc4e5Seric if (s->s_hostsig != NULL) 2094bafdc4e5Seric len += strlen(s->s_hostsig) + 1; 2095bafdc4e5Seric p = xalloc(len); 2096bafdc4e5Seric if (s->s_hostsig != NULL) 2097bafdc4e5Seric { 2098bafdc4e5Seric (void) strcpy(p, s->s_hostsig); 2099bafdc4e5Seric free(s->s_hostsig); 2100bafdc4e5Seric s->s_hostsig = p; 2101bafdc4e5Seric p += strlen(p); 2102bafdc4e5Seric *p++ = ':'; 2103bafdc4e5Seric } 2104bafdc4e5Seric else 2105bafdc4e5Seric s->s_hostsig = p; 2106e103b48fSeric for (i = 0; i < nmx; i++) 2107e103b48fSeric { 2108e103b48fSeric if (i != 0) 2109e103b48fSeric *p++ = ':'; 2110e103b48fSeric strcpy(p, mxhosts[i]); 2111e103b48fSeric p += strlen(p); 2112e103b48fSeric } 2113bafdc4e5Seric if (endp != NULL) 2114bafdc4e5Seric *endp++ = ':'; 2115bafdc4e5Seric } 2116e103b48fSeric makelower(s->s_hostsig); 2117*516782b4Seric if (ConfigLevel < 2) 2118*516782b4Seric _res.options = oldoptions; 2119e103b48fSeric #else 2120e103b48fSeric /* not using BIND -- the signature is just the host name */ 2121e103b48fSeric s->s_hostsig = host; 2122e103b48fSeric #endif 2123e103b48fSeric if (tTd(17, 1)) 2124e103b48fSeric printf("hostsignature(%s) = %s\n", host, s->s_hostsig); 2125e103b48fSeric return s->s_hostsig; 2126e103b48fSeric } 2127