1 /* 2 * Copyright (c) 1983 Eric P. Allman 3 * Copyright (c) 1988, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * %sccs.include.redist.c% 7 */ 8 9 #ifndef lint 10 static char sccsid[] = "@(#)envelope.c 8.47 (Berkeley) 11/22/94"; 11 #endif /* not lint */ 12 13 #include "sendmail.h" 14 #include <pwd.h> 15 16 /* 17 ** NEWENVELOPE -- allocate a new envelope 18 ** 19 ** Supports inheritance. 20 ** 21 ** Parameters: 22 ** e -- the new envelope to fill in. 23 ** parent -- the envelope to be the parent of e. 24 ** 25 ** Returns: 26 ** e. 27 ** 28 ** Side Effects: 29 ** none. 30 */ 31 32 ENVELOPE * 33 newenvelope(e, parent) 34 register ENVELOPE *e; 35 register ENVELOPE *parent; 36 { 37 extern putheader(), putbody(); 38 extern ENVELOPE BlankEnvelope; 39 40 if (e == parent && e->e_parent != NULL) 41 parent = e->e_parent; 42 clearenvelope(e, TRUE); 43 if (e == CurEnv) 44 bcopy((char *) &NullAddress, (char *) &e->e_from, sizeof e->e_from); 45 else 46 bcopy((char *) &CurEnv->e_from, (char *) &e->e_from, sizeof e->e_from); 47 e->e_parent = parent; 48 e->e_ctime = curtime(); 49 if (parent != NULL) 50 e->e_msgpriority = parent->e_msgsize; 51 e->e_puthdr = putheader; 52 e->e_putbody = putbody; 53 if (CurEnv->e_xfp != NULL) 54 (void) fflush(CurEnv->e_xfp); 55 56 return (e); 57 } 58 /* 59 ** DROPENVELOPE -- deallocate an envelope. 60 ** 61 ** Parameters: 62 ** e -- the envelope to deallocate. 63 ** 64 ** Returns: 65 ** none. 66 ** 67 ** Side Effects: 68 ** housekeeping necessary to dispose of an envelope. 69 ** Unlocks this queue file. 70 */ 71 72 void 73 dropenvelope(e) 74 register ENVELOPE *e; 75 { 76 bool queueit = FALSE; 77 bool failure_return = FALSE; 78 bool success_return = FALSE; 79 register ADDRESS *q; 80 char *id = e->e_id; 81 bool return_no, return_yes; 82 char buf[MAXLINE]; 83 84 if (tTd(50, 1)) 85 { 86 printf("dropenvelope %x: id=", e); 87 xputs(e->e_id); 88 printf(", flags=0x%x\n", e->e_flags); 89 if (tTd(50, 10)) 90 { 91 printf("sendq="); 92 printaddr(e->e_sendqueue, TRUE); 93 } 94 } 95 96 /* we must have an id to remove disk files */ 97 if (id == NULL) 98 return; 99 100 #ifdef LOG 101 if (LogLevel > 4 && bitset(EF_LOGSENDER, e->e_flags)) 102 logsender(e, NULL); 103 if (LogLevel > 84) 104 syslog(LOG_DEBUG, "dropenvelope, id=%s, flags=0x%x, pid=%d", 105 id, e->e_flags, getpid()); 106 #endif /* LOG */ 107 e->e_flags &= ~EF_LOGSENDER; 108 109 /* post statistics */ 110 poststats(StatFile); 111 112 /* 113 ** Extract state information from dregs of send list. 114 */ 115 116 e->e_flags &= ~EF_QUEUERUN; 117 return_no = return_yes = FALSE; 118 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 119 { 120 if (bitset(QQUEUEUP, q->q_flags)) 121 queueit = TRUE; 122 123 /* see if a notification is needed */ 124 if (e->e_df != NULL && 125 bitset(QBADADDR, q->q_flags) && 126 bitset(QPINGONFAILURE, q->q_flags)) 127 { 128 failure_return = TRUE; 129 if (q->q_owner == NULL && !emptyaddr(&e->e_from)) 130 (void) sendtolist(e->e_from.q_paddr, NULL, 131 &e->e_errorqueue, 0, e); 132 } 133 else if (bitset(QSENT, q->q_flags) && 134 bitnset(M_LOCALMAILER, q->q_mailer->m_flags) && 135 bitset(QPINGONSUCCESS, q->q_flags)) 136 { 137 success_return = TRUE; 138 } 139 else if (bitset(QRELAYED, q->q_flags)) 140 { 141 success_return = TRUE; 142 } 143 else 144 continue; 145 146 /* common code for error returns and return receipts */ 147 148 /* test for returning the body */ 149 if (bitset(QHAS_RET_PARAM, q->q_flags)) 150 { 151 if (bitset(QRET_HDRS, q->q_flags)) 152 return_no = TRUE; 153 else 154 return_yes = TRUE; 155 } 156 } 157 if (return_no && !return_yes) 158 e->e_flags |= EF_NORETURN; 159 160 /* 161 ** See if the message timed out. 162 */ 163 164 if (!queueit) 165 /* nothing to do */ ; 166 else if (curtime() > e->e_ctime + TimeOuts.to_q_return[e->e_timeoutclass]) 167 { 168 (void) sprintf(buf, "Cannot send message for %s", 169 pintvl(TimeOuts.to_q_return[e->e_timeoutclass], FALSE)); 170 if (e->e_message != NULL) 171 free(e->e_message); 172 e->e_message = newstr(buf); 173 message(buf); 174 e->e_flags |= EF_CLRQUEUE; 175 failure_return = TRUE; 176 fprintf(e->e_xfp, "Message could not be delivered for %s\n", 177 pintvl(TimeOuts.to_q_return[e->e_timeoutclass], FALSE)); 178 fprintf(e->e_xfp, "Message will be deleted from queue\n"); 179 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 180 { 181 if (bitset(QQUEUEUP, q->q_flags)) 182 q->q_flags |= QBADADDR; 183 } 184 } 185 else if (TimeOuts.to_q_warning[e->e_timeoutclass] > 0 && 186 curtime() > e->e_ctime + TimeOuts.to_q_warning[e->e_timeoutclass]) 187 { 188 bool delay_return = FALSE; 189 190 for (q = e->e_sendqueue; q != NULL; q = q->q_next) 191 { 192 if (bitset(QQUEUEUP, q->q_flags) && 193 bitset(QPINGONDELAY, q->q_flags)) 194 { 195 q->q_flags |= QREPORT; 196 delay_return = TRUE; 197 } 198 } 199 if (delay_return && 200 !bitset(EF_WARNING|EF_RESPONSE, e->e_flags) && 201 e->e_class >= 0 && 202 strcmp(e->e_from.q_paddr, "<>") != 0 && 203 strncasecmp(e->e_from.q_paddr, "owner-", 6) != 0 && 204 (strlen(e->e_from.q_paddr) <= 8 || 205 strcasecmp(&e->e_from.q_paddr[strlen(e->e_from.q_paddr) - 8], "-request") != 0)) 206 { 207 (void) sprintf(buf, 208 "Warning: cannot send message for %s", 209 pintvl(TimeOuts.to_q_warning[e->e_timeoutclass], FALSE)); 210 if (e->e_message != NULL) 211 free(e->e_message); 212 e->e_message = newstr(buf); 213 message(buf); 214 e->e_flags |= EF_WARNING; 215 failure_return = TRUE; 216 } 217 fprintf(e->e_xfp, 218 "Warning: message still undelivered after %s\n", 219 pintvl(TimeOuts.to_q_warning[e->e_timeoutclass], FALSE)); 220 fprintf(e->e_xfp, "Will keep trying until message is %s old\n", 221 pintvl(TimeOuts.to_q_return[e->e_timeoutclass], FALSE)); 222 } 223 224 if (tTd(50, 2)) 225 printf("failure_return=%d success_return=%d queueit=%d\n", 226 failure_return, success_return, queueit); 227 228 /* 229 ** Send back return receipts as requested. 230 */ 231 232 /* 233 if (e->e_receiptto != NULL && bitset(EF_SENDRECEIPT, e->e_flags) 234 && !bitset(PRIV_NORECEIPTS, PrivacyFlags)) 235 */ 236 if (e->e_receiptto == NULL) 237 e->e_receiptto = e->e_from.q_paddr; 238 if (success_return && !failure_return && 239 strcmp(e->e_receiptto, "<>") != 0) 240 { 241 auto ADDRESS *rlist = NULL; 242 243 e->e_flags |= EF_SENDRECEIPT; 244 (void) sendtolist(e->e_receiptto, NULLADDR, &rlist, 0, e); 245 (void) returntosender("Return receipt", rlist, return_yes, e); 246 } 247 e->e_flags &= ~EF_SENDRECEIPT; 248 249 /* 250 ** Arrange to send error messages if there are fatal errors. 251 */ 252 253 if (failure_return && e->e_errormode != EM_QUIET) 254 savemail(e, return_yes || (!return_no && e->e_class >= 0)); 255 256 /* 257 ** Arrange to send warning messages to postmaster as requested. 258 */ 259 260 if (bitset(EF_PM_NOTIFY, e->e_flags) && PostMasterCopy != NULL && 261 !bitset(EF_RESPONSE, e->e_flags) && e->e_class >= 0) 262 { 263 auto ADDRESS *rlist = NULL; 264 265 (void) sendtolist(PostMasterCopy, NULLADDR, &rlist, 0, e); 266 (void) returntosender(e->e_message, rlist, FALSE, e); 267 } 268 269 /* 270 ** Instantiate or deinstantiate the queue. 271 */ 272 273 if ((!queueit && !bitset(EF_KEEPQUEUE, e->e_flags)) || 274 bitset(EF_CLRQUEUE, e->e_flags)) 275 { 276 if (tTd(50, 1)) 277 printf("\n===== Dropping [dq]f%s (queueit=%d, e_flags=%x) =====\n\n", 278 e->e_id, queueit, e->e_flags); 279 if (e->e_df != NULL) 280 xunlink(e->e_df); 281 xunlink(queuename(e, 'q')); 282 283 #ifdef LOG 284 if (LogLevel > 10) 285 syslog(LOG_INFO, "%s: done", id); 286 #endif 287 } 288 else if (queueit || !bitset(EF_INQUEUE, e->e_flags)) 289 { 290 #ifdef QUEUE 291 queueup(e, bitset(EF_KEEPQUEUE, e->e_flags), FALSE); 292 #else /* QUEUE */ 293 syserr("554 dropenvelope: queueup"); 294 #endif /* QUEUE */ 295 } 296 297 /* now unlock the job */ 298 closexscript(e); 299 unlockqueue(e); 300 301 /* make sure that this envelope is marked unused */ 302 if (e->e_dfp != NULL) 303 (void) xfclose(e->e_dfp, "dropenvelope", e->e_df); 304 e->e_dfp = NULL; 305 e->e_id = e->e_df = NULL; 306 } 307 /* 308 ** CLEARENVELOPE -- clear an envelope without unlocking 309 ** 310 ** This is normally used by a child process to get a clean 311 ** envelope without disturbing the parent. 312 ** 313 ** Parameters: 314 ** e -- the envelope to clear. 315 ** fullclear - if set, the current envelope is total 316 ** garbage and should be ignored; otherwise, 317 ** release any resources it may indicate. 318 ** 319 ** Returns: 320 ** none. 321 ** 322 ** Side Effects: 323 ** Closes files associated with the envelope. 324 ** Marks the envelope as unallocated. 325 */ 326 327 void 328 clearenvelope(e, fullclear) 329 register ENVELOPE *e; 330 bool fullclear; 331 { 332 register HDR *bh; 333 register HDR **nhp; 334 extern ENVELOPE BlankEnvelope; 335 336 if (!fullclear) 337 { 338 /* clear out any file information */ 339 if (e->e_xfp != NULL) 340 (void) xfclose(e->e_xfp, "clearenvelope xfp", e->e_id); 341 if (e->e_dfp != NULL) 342 (void) xfclose(e->e_dfp, "clearenvelope dfp", e->e_df); 343 e->e_xfp = e->e_dfp = NULL; 344 } 345 346 /* now clear out the data */ 347 STRUCTCOPY(BlankEnvelope, *e); 348 if (Verbose) 349 e->e_sendmode = SM_DELIVER; 350 bh = BlankEnvelope.e_header; 351 nhp = &e->e_header; 352 while (bh != NULL) 353 { 354 *nhp = (HDR *) xalloc(sizeof *bh); 355 bcopy((char *) bh, (char *) *nhp, sizeof *bh); 356 bh = bh->h_link; 357 nhp = &(*nhp)->h_link; 358 } 359 } 360 /* 361 ** INITSYS -- initialize instantiation of system 362 ** 363 ** In Daemon mode, this is done in the child. 364 ** 365 ** Parameters: 366 ** none. 367 ** 368 ** Returns: 369 ** none. 370 ** 371 ** Side Effects: 372 ** Initializes the system macros, some global variables, 373 ** etc. In particular, the current time in various 374 ** forms is set. 375 */ 376 377 void 378 initsys(e) 379 register ENVELOPE *e; 380 { 381 char cbuf[5]; /* holds hop count */ 382 char pbuf[10]; /* holds pid */ 383 #ifdef TTYNAME 384 static char ybuf[60]; /* holds tty id */ 385 register char *p; 386 #endif /* TTYNAME */ 387 extern char *ttyname(); 388 extern void settime(); 389 extern char Version[]; 390 391 /* 392 ** Give this envelope a reality. 393 ** I.e., an id, a transcript, and a creation time. 394 */ 395 396 openxscript(e); 397 e->e_ctime = curtime(); 398 399 /* 400 ** Set OutChannel to something useful if stdout isn't it. 401 ** This arranges that any extra stuff the mailer produces 402 ** gets sent back to the user on error (because it is 403 ** tucked away in the transcript). 404 */ 405 406 if (OpMode == MD_DAEMON && bitset(EF_QUEUERUN, e->e_flags) && 407 e->e_xfp != NULL) 408 OutChannel = e->e_xfp; 409 410 /* 411 ** Set up some basic system macros. 412 */ 413 414 /* process id */ 415 (void) sprintf(pbuf, "%d", getpid()); 416 define('p', newstr(pbuf), e); 417 418 /* hop count */ 419 (void) sprintf(cbuf, "%d", e->e_hopcount); 420 define('c', newstr(cbuf), e); 421 422 /* time as integer, unix time, arpa time */ 423 settime(e); 424 425 #ifdef TTYNAME 426 /* tty name */ 427 if (macvalue('y', e) == NULL) 428 { 429 p = ttyname(2); 430 if (p != NULL) 431 { 432 if (strrchr(p, '/') != NULL) 433 p = strrchr(p, '/') + 1; 434 (void) strcpy(ybuf, p); 435 define('y', ybuf, e); 436 } 437 } 438 #endif /* TTYNAME */ 439 } 440 /* 441 ** SETTIME -- set the current time. 442 ** 443 ** Parameters: 444 ** none. 445 ** 446 ** Returns: 447 ** none. 448 ** 449 ** Side Effects: 450 ** Sets the various time macros -- $a, $b, $d, $t. 451 */ 452 453 void 454 settime(e) 455 register ENVELOPE *e; 456 { 457 register char *p; 458 auto time_t now; 459 char tbuf[20]; /* holds "current" time */ 460 char dbuf[30]; /* holds ctime(tbuf) */ 461 register struct tm *tm; 462 extern char *arpadate(); 463 extern struct tm *gmtime(); 464 465 now = curtime(); 466 tm = gmtime(&now); 467 (void) sprintf(tbuf, "%04d%02d%02d%02d%02d", tm->tm_year + 1900, 468 tm->tm_mon+1, tm->tm_mday, tm->tm_hour, tm->tm_min); 469 define('t', newstr(tbuf), e); 470 (void) strcpy(dbuf, ctime(&now)); 471 p = strchr(dbuf, '\n'); 472 if (p != NULL) 473 *p = '\0'; 474 define('d', newstr(dbuf), e); 475 p = arpadate(dbuf); 476 p = newstr(p); 477 if (macvalue('a', e) == NULL) 478 define('a', p, e); 479 define('b', p, e); 480 } 481 /* 482 ** OPENXSCRIPT -- Open transcript file 483 ** 484 ** Creates a transcript file for possible eventual mailing or 485 ** sending back. 486 ** 487 ** Parameters: 488 ** e -- the envelope to create the transcript in/for. 489 ** 490 ** Returns: 491 ** none 492 ** 493 ** Side Effects: 494 ** Creates the transcript file. 495 */ 496 497 #ifndef O_APPEND 498 #define O_APPEND 0 499 #endif 500 501 void 502 openxscript(e) 503 register ENVELOPE *e; 504 { 505 register char *p; 506 int fd; 507 508 if (e->e_xfp != NULL) 509 return; 510 p = queuename(e, 'x'); 511 fd = open(p, O_WRONLY|O_CREAT|O_APPEND, 0644); 512 if (fd < 0) 513 { 514 syserr("Can't create transcript file %s", p); 515 fd = open("/dev/null", O_WRONLY, 0644); 516 if (fd < 0) 517 syserr("!Can't open /dev/null"); 518 } 519 e->e_xfp = fdopen(fd, "w"); 520 if (e->e_xfp == NULL) 521 { 522 syserr("!Can't create transcript stream %s", p); 523 } 524 if (tTd(46, 9)) 525 { 526 printf("openxscript(%s):\n ", p); 527 dumpfd(fileno(e->e_xfp), TRUE, FALSE); 528 } 529 } 530 /* 531 ** CLOSEXSCRIPT -- close the transcript file. 532 ** 533 ** Parameters: 534 ** e -- the envelope containing the transcript to close. 535 ** 536 ** Returns: 537 ** none. 538 ** 539 ** Side Effects: 540 ** none. 541 */ 542 543 void 544 closexscript(e) 545 register ENVELOPE *e; 546 { 547 if (e->e_xfp == NULL) 548 return; 549 (void) xfclose(e->e_xfp, "closexscript", e->e_id); 550 e->e_xfp = NULL; 551 } 552 /* 553 ** SETSENDER -- set the person who this message is from 554 ** 555 ** Under certain circumstances allow the user to say who 556 ** s/he is (using -f or -r). These are: 557 ** 1. The user's uid is zero (root). 558 ** 2. The user's login name is in an approved list (typically 559 ** from a network server). 560 ** 3. The address the user is trying to claim has a 561 ** "!" character in it (since #2 doesn't do it for 562 ** us if we are dialing out for UUCP). 563 ** A better check to replace #3 would be if the 564 ** effective uid is "UUCP" -- this would require me 565 ** to rewrite getpwent to "grab" uucp as it went by, 566 ** make getname more nasty, do another passwd file 567 ** scan, or compile the UID of "UUCP" into the code, 568 ** all of which are reprehensible. 569 ** 570 ** Assuming all of these fail, we figure out something 571 ** ourselves. 572 ** 573 ** Parameters: 574 ** from -- the person we would like to believe this message 575 ** is from, as specified on the command line. 576 ** e -- the envelope in which we would like the sender set. 577 ** delimptr -- if non-NULL, set to the location of the 578 ** trailing delimiter. 579 ** internal -- set if this address is coming from an internal 580 ** source such as an owner alias. 581 ** 582 ** Returns: 583 ** none. 584 ** 585 ** Side Effects: 586 ** sets sendmail's notion of who the from person is. 587 */ 588 589 void 590 setsender(from, e, delimptr, internal) 591 char *from; 592 register ENVELOPE *e; 593 char **delimptr; 594 bool internal; 595 { 596 register char **pvp; 597 char *realname = NULL; 598 register struct passwd *pw; 599 char delimchar; 600 char *bp; 601 char buf[MAXNAME + 2]; 602 char pvpbuf[PSBUFSIZE]; 603 extern struct passwd *getpwnam(); 604 extern char *FullName; 605 606 if (tTd(45, 1)) 607 printf("setsender(%s)\n", from == NULL ? "" : from); 608 609 /* 610 ** Figure out the real user executing us. 611 ** Username can return errno != 0 on non-errors. 612 */ 613 614 if (bitset(EF_QUEUERUN, e->e_flags) || OpMode == MD_SMTP || 615 OpMode == MD_ARPAFTP || OpMode == MD_DAEMON) 616 realname = from; 617 if (realname == NULL || realname[0] == '\0') 618 realname = username(); 619 620 if (ConfigLevel < 2) 621 SuprErrs = TRUE; 622 623 delimchar = internal ? '\0' : ' '; 624 e->e_from.q_flags = QBADADDR; 625 if (from == NULL || 626 parseaddr(from, &e->e_from, RF_COPYALL|RF_SENDERADDR, 627 delimchar, delimptr, e) == NULL || 628 bitset(QBADADDR, e->e_from.q_flags) || 629 e->e_from.q_mailer == ProgMailer || 630 e->e_from.q_mailer == FileMailer || 631 e->e_from.q_mailer == InclMailer) 632 { 633 /* log garbage addresses for traceback */ 634 # ifdef LOG 635 if (from != NULL && LogLevel > 2) 636 { 637 char *p; 638 char ebuf[MAXNAME * 2 + 2]; 639 640 p = macvalue('_', e); 641 if (p == NULL) 642 { 643 char *host = RealHostName; 644 if (host == NULL) 645 host = MyHostName; 646 (void) sprintf(ebuf, "%s@%s", realname, host); 647 p = ebuf; 648 } 649 syslog(LOG_NOTICE, 650 "setsender: %s: invalid or unparseable, received from %s", 651 shortenstring(from, 83), p); 652 } 653 # endif /* LOG */ 654 if (from != NULL) 655 { 656 if (!bitset(QBADADDR, e->e_from.q_flags)) 657 { 658 /* it was a bogus mailer in the from addr */ 659 usrerr("553 Invalid sender address"); 660 } 661 SuprErrs = TRUE; 662 } 663 if (from == realname || 664 parseaddr(from = newstr(realname), &e->e_from, 665 RF_COPYALL|RF_SENDERADDR, ' ', NULL, e) == NULL) 666 { 667 char nbuf[100]; 668 669 SuprErrs = TRUE; 670 expand("\201n", nbuf, &nbuf[sizeof nbuf], e); 671 if (parseaddr(from = newstr(nbuf), &e->e_from, 672 RF_COPYALL, ' ', NULL, e) == NULL && 673 parseaddr(from = "postmaster", &e->e_from, 674 RF_COPYALL, ' ', NULL, e) == NULL) 675 syserr("553 setsender: can't even parse postmaster!"); 676 } 677 } 678 else 679 FromFlag = TRUE; 680 e->e_from.q_flags |= QDONTSEND; 681 if (tTd(45, 5)) 682 { 683 printf("setsender: QDONTSEND "); 684 printaddr(&e->e_from, FALSE); 685 } 686 SuprErrs = FALSE; 687 688 # ifdef USERDB 689 if (bitnset(M_CHECKUDB, e->e_from.q_mailer->m_flags)) 690 { 691 register char *p; 692 extern char *udbsender(); 693 694 p = udbsender(e->e_from.q_user); 695 if (p != NULL) 696 from = p; 697 } 698 # endif /* USERDB */ 699 700 if (bitnset(M_HASPWENT, e->e_from.q_mailer->m_flags)) 701 { 702 if (!internal) 703 { 704 /* if the user already given fullname don't redefine */ 705 if (FullName == NULL) 706 FullName = macvalue('x', e); 707 if (FullName != NULL && FullName[0] == '\0') 708 FullName = NULL; 709 } 710 711 if ((pw = getpwnam(e->e_from.q_user)) != NULL) 712 { 713 /* 714 ** Process passwd file entry. 715 */ 716 717 /* extract home directory */ 718 if (strcmp(pw->pw_dir, "/") == 0) 719 e->e_from.q_home = newstr(""); 720 else 721 e->e_from.q_home = newstr(pw->pw_dir); 722 define('z', e->e_from.q_home, e); 723 724 /* extract user and group id */ 725 e->e_from.q_uid = pw->pw_uid; 726 e->e_from.q_gid = pw->pw_gid; 727 e->e_from.q_flags |= QGOODUID; 728 729 /* extract full name from passwd file */ 730 if (FullName == NULL && pw->pw_gecos != NULL && 731 strcmp(pw->pw_name, e->e_from.q_user) == 0 && 732 !internal) 733 { 734 buildfname(pw->pw_gecos, e->e_from.q_user, buf); 735 if (buf[0] != '\0') 736 FullName = newstr(buf); 737 } 738 } 739 if (FullName != NULL && !internal) 740 define('x', FullName, e); 741 } 742 else if (!internal && OpMode != MD_DAEMON) 743 { 744 if (e->e_from.q_home == NULL) 745 { 746 e->e_from.q_home = getenv("HOME"); 747 if (e->e_from.q_home != NULL && 748 strcmp(e->e_from.q_home, "/") == 0) 749 e->e_from.q_home++; 750 } 751 e->e_from.q_uid = RealUid; 752 e->e_from.q_gid = RealGid; 753 e->e_from.q_flags |= QGOODUID; 754 } 755 756 /* 757 ** Rewrite the from person to dispose of possible implicit 758 ** links in the net. 759 */ 760 761 pvp = prescan(from, delimchar, pvpbuf, sizeof pvpbuf, NULL); 762 if (pvp == NULL) 763 { 764 /* don't need to give error -- prescan did that already */ 765 # ifdef LOG 766 if (LogLevel > 2) 767 syslog(LOG_NOTICE, "cannot prescan from (%s)", from); 768 # endif 769 finis(); 770 } 771 /* 772 (void) rewrite(pvp, 3, 0, e); 773 (void) rewrite(pvp, 1, 0, e); 774 (void) rewrite(pvp, 4, 0, e); 775 */ 776 bp = buf + 1; 777 cataddr(pvp, NULL, bp, sizeof buf - 2, '\0'); 778 if (*bp == '@' && !bitnset(M_NOBRACKET, e->e_from.q_mailer->m_flags)) 779 { 780 /* heuristic: route-addr: add angle brackets */ 781 strcat(bp, ">"); 782 *--bp = '<'; 783 } 784 e->e_sender = newstr(bp); 785 define('f', e->e_sender, e); 786 787 /* save the domain spec if this mailer wants it */ 788 if (e->e_from.q_mailer != NULL && 789 bitnset(M_CANONICAL, e->e_from.q_mailer->m_flags)) 790 { 791 extern char **copyplist(); 792 793 while (*pvp != NULL && strcmp(*pvp, "@") != 0) 794 pvp++; 795 if (*pvp != NULL) 796 e->e_fromdomain = copyplist(pvp, TRUE); 797 } 798 } 799