| 1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. |
| 3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. |
| 5 | */ |
| 6 | |
| 7 | #ifndef lint |
| 8 | static char *sccsid = "@(#)send.c 5.2 (Berkeley) %G%"; |
| 9 | #endif not lint |
| 10 | |
| 11 | #include "rcv.h" |
| 12 | #ifdef VMUNIX |
| 13 | #include <sys/wait.h> |
| 14 | #endif |
| 15 | #include <ctype.h> |
| 16 | #include <sys/stat.h> |
| 17 | |
| 18 | /* |
| 19 | * Mail -- a mail program |
| 20 | * |
| 21 | * Mail to others. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * Send message described by the passed pointer to the |
| 26 | * passed output buffer. Return -1 on error, but normally |
| 27 | * the number of lines written. Adjust the status: field |
| 28 | * if need be. If doign is set, suppress ignored header fields. |
| 29 | */ |
| 30 | send(mailp, obuf, doign) |
| 31 | struct message *mailp; |
| 32 | FILE *obuf; |
| 33 | { |
| 34 | register struct message *mp; |
| 35 | register int t; |
| 36 | long c; |
| 37 | FILE *ibuf; |
| 38 | char line[LINESIZE], field[BUFSIZ]; |
| 39 | int lc, ishead, infld, fline, dostat; |
| 40 | char *cp, *cp2; |
| 41 | |
| 42 | mp = mailp; |
| 43 | ibuf = setinput(mp); |
| 44 | c = mp->m_size; |
| 45 | ishead = 1; |
| 46 | dostat = 1; |
| 47 | infld = 0; |
| 48 | fline = 1; |
| 49 | lc = 0; |
| 50 | while (c > 0L) { |
| 51 | fgets(line, LINESIZE, ibuf); |
| 52 | c -= (long) strlen(line); |
| 53 | lc++; |
| 54 | if (ishead) { |
| 55 | /* |
| 56 | * First line is the From line, so no headers |
| 57 | * there to worry about |
| 58 | */ |
| 59 | if (fline) { |
| 60 | fline = 0; |
| 61 | goto writeit; |
| 62 | } |
| 63 | /* |
| 64 | * If line is blank, we've reached end of |
| 65 | * headers, so force out status: field |
| 66 | * and note that we are no longer in header |
| 67 | * fields |
| 68 | */ |
| 69 | if (line[0] == '\n') { |
| 70 | if (dostat) { |
| 71 | statusput(mailp, obuf, doign); |
| 72 | dostat = 0; |
| 73 | } |
| 74 | ishead = 0; |
| 75 | goto writeit; |
| 76 | } |
| 77 | /* |
| 78 | * If this line is a continuation (via space or tab) |
| 79 | * of a previous header field, just echo it |
| 80 | * (unless the field should be ignored). |
| 81 | */ |
| 82 | if (infld && (isspace(line[0]) || line[0] == '\t')) { |
| 83 | if (doign && isign(field)) continue; |
| 84 | goto writeit; |
| 85 | } |
| 86 | infld = 0; |
| 87 | /* |
| 88 | * If we are no longer looking at real |
| 89 | * header lines, force out status: |
| 90 | * This happens in uucp style mail where |
| 91 | * there are no headers at all. |
| 92 | */ |
| 93 | if (!headerp(line)) { |
| 94 | if (dostat) { |
| 95 | statusput(mailp, obuf, doign); |
| 96 | dostat = 0; |
| 97 | } |
| 98 | putc('\n', obuf); |
| 99 | ishead = 0; |
| 100 | goto writeit; |
| 101 | } |
| 102 | infld++; |
| 103 | /* |
| 104 | * Pick up the header field. |
| 105 | * If it is an ignored field and |
| 106 | * we care about such things, skip it. |
| 107 | */ |
| 108 | cp = line; |
| 109 | cp2 = field; |
| 110 | while (*cp && *cp != ':' && !isspace(*cp)) |
| 111 | *cp2++ = *cp++; |
| 112 | *cp2 = 0; |
| 113 | if (doign && isign(field)) |
| 114 | continue; |
| 115 | /* |
| 116 | * If the field is "status," go compute and print the |
| 117 | * real Status: field |
| 118 | */ |
| 119 | if (icequal(field, "status")) { |
| 120 | if (dostat) { |
| 121 | statusput(mailp, obuf, doign); |
| 122 | dostat = 0; |
| 123 | } |
| 124 | continue; |
| 125 | } |
| 126 | } |
| 127 | writeit: |
| 128 | fputs(line, obuf); |
| 129 | if (ferror(obuf)) |
| 130 | return(-1); |
| 131 | } |
| 132 | if (ferror(obuf)) |
| 133 | return(-1); |
| 134 | if (ishead && (mailp->m_flag & MSTATUS)) |
| 135 | printf("failed to fix up status field\n"); |
| 136 | return(lc); |
| 137 | } |
| 138 | |
| 139 | /* |
| 140 | * Test if the passed line is a header line, RFC 733 style. |
| 141 | */ |
| 142 | headerp(line) |
| 143 | register char *line; |
| 144 | { |
| 145 | register char *cp = line; |
| 146 | |
| 147 | while (*cp && !isspace(*cp) && *cp != ':') |
| 148 | cp++; |
| 149 | while (*cp && isspace(*cp)) |
| 150 | cp++; |
| 151 | return(*cp == ':'); |
| 152 | } |
| 153 | |
| 154 | /* |
| 155 | * Output a reasonable looking status field. |
| 156 | * But if "status" is ignored and doign, forget it. |
| 157 | */ |
| 158 | statusput(mp, obuf, doign) |
| 159 | register struct message *mp; |
| 160 | register FILE *obuf; |
| 161 | { |
| 162 | char statout[3]; |
| 163 | |
| 164 | if (doign && isign("status")) |
| 165 | return; |
| 166 | if ((mp->m_flag & (MNEW|MREAD)) == MNEW) |
| 167 | return; |
| 168 | if (mp->m_flag & MREAD) |
| 169 | strcpy(statout, "R"); |
| 170 | else |
| 171 | strcpy(statout, ""); |
| 172 | if ((mp->m_flag & MNEW) == 0) |
| 173 | strcat(statout, "O"); |
| 174 | fprintf(obuf, "Status: %s\n", statout); |
| 175 | } |
| 176 | |
| 177 | |
| 178 | /* |
| 179 | * Interface between the argument list and the mail1 routine |
| 180 | * which does all the dirty work. |
| 181 | */ |
| 182 | |
| 183 | mail(people) |
| 184 | char **people; |
| 185 | { |
| 186 | register char *cp2; |
| 187 | register int s; |
| 188 | char *buf, **ap; |
| 189 | struct header head; |
| 190 | |
| 191 | for (s = 0, ap = people; *ap != (char *) -1; ap++) |
| 192 | s += strlen(*ap) + 1; |
| 193 | buf = salloc(s+1); |
| 194 | cp2 = buf; |
| 195 | for (ap = people; *ap != (char *) -1; ap++) { |
| 196 | cp2 = copy(*ap, cp2); |
| 197 | *cp2++ = ' '; |
| 198 | } |
| 199 | if (cp2 != buf) |
| 200 | cp2--; |
| 201 | *cp2 = '\0'; |
| 202 | head.h_to = buf; |
| 203 | head.h_subject = NOSTR; |
| 204 | head.h_cc = NOSTR; |
| 205 | head.h_bcc = NOSTR; |
| 206 | head.h_seq = 0; |
| 207 | mail1(&head); |
| 208 | return(0); |
| 209 | } |
| 210 | |
| 211 | |
| 212 | /* |
| 213 | * Send mail to a bunch of user names. The interface is through |
| 214 | * the mail routine below. |
| 215 | */ |
| 216 | |
| 217 | sendmail(str) |
| 218 | char *str; |
| 219 | { |
| 220 | register char **ap; |
| 221 | char *bufp; |
| 222 | register int t; |
| 223 | struct header head; |
| 224 | |
| 225 | if (blankline(str)) |
| 226 | head.h_to = NOSTR; |
| 227 | else |
| 228 | head.h_to = str; |
| 229 | head.h_subject = NOSTR; |
| 230 | head.h_cc = NOSTR; |
| 231 | head.h_bcc = NOSTR; |
| 232 | head.h_seq = 0; |
| 233 | mail1(&head); |
| 234 | return(0); |
| 235 | } |
| 236 | |
| 237 | /* |
| 238 | * Mail a message on standard input to the people indicated |
| 239 | * in the passed header. (Internal interface). |
| 240 | */ |
| 241 | |
| 242 | mail1(hp) |
| 243 | struct header *hp; |
| 244 | { |
| 245 | register char *cp; |
| 246 | int pid, i, s, p, gotcha; |
| 247 | char **namelist, *deliver; |
| 248 | struct name *to, *np; |
| 249 | struct stat sbuf; |
| 250 | FILE *mtf, *postage; |
| 251 | int remote = rflag != NOSTR || rmail; |
| 252 | char **t; |
| 253 | |
| 254 | /* |
| 255 | * Collect user's mail from standard input. |
| 256 | * Get the result as mtf. |
| 257 | */ |
| 258 | |
| 259 | pid = -1; |
| 260 | if ((mtf = collect(hp)) == NULL) |
| 261 | return(-1); |
| 262 | hp->h_seq = 1; |
| 263 | if (hp->h_subject == NOSTR) |
| 264 | hp->h_subject = sflag; |
| 265 | if (intty && value("askcc") != NOSTR) |
| 266 | grabh(hp, GCC); |
| 267 | else if (intty) { |
| 268 | printf("EOT\n"); |
| 269 | fflush(stdout); |
| 270 | } |
| 271 | |
| 272 | /* |
| 273 | * Now, take the user names from the combined |
| 274 | * to and cc lists and do all the alias |
| 275 | * processing. |
| 276 | */ |
| 277 | |
| 278 | senderr = 0; |
| 279 | to = usermap(cat(extract(hp->h_bcc, GBCC), |
| 280 | cat(extract(hp->h_to, GTO), extract(hp->h_cc, GCC)))); |
| 281 | if (to == NIL) { |
| 282 | printf("No recipients specified\n"); |
| 283 | goto topdog; |
| 284 | } |
| 285 | |
| 286 | /* |
| 287 | * Look through the recipient list for names with /'s |
| 288 | * in them which we write to as files directly. |
| 289 | */ |
| 290 | |
| 291 | to = outof(to, mtf, hp); |
| 292 | rewind(mtf); |
| 293 | to = verify(to); |
| 294 | if (senderr && !remote) { |
| 295 | topdog: |
| 296 | |
| 297 | if (fsize(mtf) != 0) { |
| 298 | remove(deadletter); |
| 299 | exwrite(deadletter, mtf, 1); |
| 300 | rewind(mtf); |
| 301 | } |
| 302 | } |
| 303 | for (gotcha = 0, np = to; np != NIL; np = np->n_flink) |
| 304 | if ((np->n_type & GDEL) == 0) { |
| 305 | gotcha++; |
| 306 | break; |
| 307 | } |
| 308 | if (!gotcha) |
| 309 | goto out; |
| 310 | to = elide(to); |
| 311 | mechk(to); |
| 312 | if (count(to) > 1) |
| 313 | hp->h_seq++; |
| 314 | if (hp->h_seq > 0 && !remote) { |
| 315 | fixhead(hp, to); |
| 316 | if (fsize(mtf) == 0) |
| 317 | if (hp->h_subject == NOSTR) |
| 318 | printf("No message, no subject; hope that's ok\n"); |
| 319 | else |
| 320 | printf("Null message body; hope that's ok\n"); |
| 321 | if ((mtf = infix(hp, mtf)) == NULL) { |
| 322 | fprintf(stderr, ". . . message lost, sorry.\n"); |
| 323 | return(-1); |
| 324 | } |
| 325 | } |
| 326 | namelist = unpack(to); |
| 327 | if (debug) { |
| 328 | printf("Recipients of message:\n"); |
| 329 | for (t = namelist; *t != NOSTR; t++) |
| 330 | printf(" \"%s\"", *t); |
| 331 | printf("\n"); |
| 332 | fflush(stdout); |
| 333 | return; |
| 334 | } |
| 335 | if ((cp = value("record")) != NOSTR) |
| 336 | savemail(expand(cp), hp, mtf); |
| 337 | |
| 338 | /* |
| 339 | * Wait, to absorb a potential zombie, then |
| 340 | * fork, set up the temporary mail file as standard |
| 341 | * input for "mail" and exec with the user list we generated |
| 342 | * far above. Return the process id to caller in case he |
| 343 | * wants to await the completion of mail. |
| 344 | */ |
| 345 | |
| 346 | #ifdef VMUNIX |
| 347 | #ifdef pdp11 |
| 348 | while (wait2(&s, WNOHANG) > 0) |
| 349 | #endif |
| 350 | #if defined(vax) || defined(sun) |
| 351 | while (wait3(&s, WNOHANG, 0) > 0) |
| 352 | #endif |
| 353 | ; |
| 354 | #else |
| 355 | wait(&s); |
| 356 | #endif |
| 357 | rewind(mtf); |
| 358 | pid = fork(); |
| 359 | if (pid == -1) { |
| 360 | perror("fork"); |
| 361 | remove(deadletter); |
| 362 | exwrite(deadletter, mtf, 1); |
| 363 | goto out; |
| 364 | } |
| 365 | if (pid == 0) { |
| 366 | sigchild(); |
| 367 | #ifdef SIGTSTP |
| 368 | if (remote == 0) { |
| 369 | sigset(SIGTSTP, SIG_IGN); |
| 370 | sigset(SIGTTIN, SIG_IGN); |
| 371 | sigset(SIGTTOU, SIG_IGN); |
| 372 | } |
| 373 | #endif |
| 374 | for (i = SIGHUP; i <= SIGQUIT; i++) |
| 375 | sigset(i, SIG_IGN); |
| 376 | if (!stat(POSTAGE, &sbuf)) |
| 377 | if ((postage = fopen(POSTAGE, "a")) != NULL) { |
| 378 | fprintf(postage, "%s %d %d\n", myname, |
| 379 | count(to), fsize(mtf)); |
| 380 | fclose(postage); |
| 381 | } |
| 382 | s = fileno(mtf); |
| 383 | for (i = 3; i < 15; i++) |
| 384 | if (i != s) |
| 385 | close(i); |
| 386 | close(0); |
| 387 | dup(s); |
| 388 | close(s); |
| 389 | #ifdef CC |
| 390 | submit(getpid()); |
| 391 | #endif CC |
| 392 | #ifdef SENDMAIL |
| 393 | if ((deliver = value("sendmail")) == NOSTR) |
| 394 | deliver = SENDMAIL; |
| 395 | execv(deliver, namelist); |
| 396 | #endif SENDMAIL |
| 397 | execv(MAIL, namelist); |
| 398 | perror(MAIL); |
| 399 | exit(1); |
| 400 | } |
| 401 | |
| 402 | out: |
| 403 | if (remote || (value("verbose") != NOSTR)) { |
| 404 | while ((p = wait(&s)) != pid && p != -1) |
| 405 | ; |
| 406 | if (s != 0) |
| 407 | senderr++; |
| 408 | pid = 0; |
| 409 | } |
| 410 | fclose(mtf); |
| 411 | return(pid); |
| 412 | } |
| 413 | |
| 414 | /* |
| 415 | * Fix the header by glopping all of the expanded names from |
| 416 | * the distribution list into the appropriate fields. |
| 417 | * If there are any ARPA net recipients in the message, |
| 418 | * we must insert commas, alas. |
| 419 | */ |
| 420 | |
| 421 | fixhead(hp, tolist) |
| 422 | struct header *hp; |
| 423 | struct name *tolist; |
| 424 | { |
| 425 | register struct name *nlist; |
| 426 | register int f; |
| 427 | register struct name *np; |
| 428 | |
| 429 | for (f = 0, np = tolist; np != NIL; np = np->n_flink) |
| 430 | if (any('@', np->n_name)) { |
| 431 | f |= GCOMMA; |
| 432 | break; |
| 433 | } |
| 434 | |
| 435 | if (debug && f & GCOMMA) |
| 436 | fprintf(stderr, "Should be inserting commas in recip lists\n"); |
| 437 | hp->h_to = detract(tolist, GTO|f); |
| 438 | hp->h_cc = detract(tolist, GCC|f); |
| 439 | } |
| 440 | |
| 441 | /* |
| 442 | * Prepend a header in front of the collected stuff |
| 443 | * and return the new file. |
| 444 | */ |
| 445 | |
| 446 | FILE * |
| 447 | infix(hp, fi) |
| 448 | struct header *hp; |
| 449 | FILE *fi; |
| 450 | { |
| 451 | extern char tempMail[]; |
| 452 | register FILE *nfo, *nfi; |
| 453 | register int c; |
| 454 | |
| 455 | rewind(fi); |
| 456 | if ((nfo = fopen(tempMail, "w")) == NULL) { |
| 457 | perror(tempMail); |
| 458 | return(fi); |
| 459 | } |
| 460 | if ((nfi = fopen(tempMail, "r")) == NULL) { |
| 461 | perror(tempMail); |
| 462 | fclose(nfo); |
| 463 | return(fi); |
| 464 | } |
| 465 | remove(tempMail); |
| 466 | puthead(hp, nfo, GTO|GSUBJECT|GCC|GNL); |
| 467 | c = getc(fi); |
| 468 | while (c != EOF) { |
| 469 | putc(c, nfo); |
| 470 | c = getc(fi); |
| 471 | } |
| 472 | if (ferror(fi)) { |
| 473 | perror("read"); |
| 474 | return(fi); |
| 475 | } |
| 476 | fflush(nfo); |
| 477 | if (ferror(nfo)) { |
| 478 | perror(tempMail); |
| 479 | fclose(nfo); |
| 480 | fclose(nfi); |
| 481 | return(fi); |
| 482 | } |
| 483 | fclose(nfo); |
| 484 | fclose(fi); |
| 485 | rewind(nfi); |
| 486 | return(nfi); |
| 487 | } |
| 488 | |
| 489 | /* |
| 490 | * Dump the to, subject, cc header on the |
| 491 | * passed file buffer. |
| 492 | */ |
| 493 | |
| 494 | puthead(hp, fo, w) |
| 495 | struct header *hp; |
| 496 | FILE *fo; |
| 497 | { |
| 498 | register int gotcha; |
| 499 | |
| 500 | gotcha = 0; |
| 501 | if (hp->h_to != NOSTR && w & GTO) |
| 502 | fmt("To: ", hp->h_to, fo), gotcha++; |
| 503 | if (hp->h_subject != NOSTR && w & GSUBJECT) |
| 504 | fprintf(fo, "Subject: %s\n", hp->h_subject), gotcha++; |
| 505 | if (hp->h_cc != NOSTR && w & GCC) |
| 506 | fmt("Cc: ", hp->h_cc, fo), gotcha++; |
| 507 | if (hp->h_bcc != NOSTR && w & GBCC) |
| 508 | fmt("Bcc: ", hp->h_bcc, fo), gotcha++; |
| 509 | if (gotcha && w & GNL) |
| 510 | putc('\n', fo); |
| 511 | return(0); |
| 512 | } |
| 513 | |
| 514 | /* |
| 515 | * Format the given text to not exceed 72 characters. |
| 516 | */ |
| 517 | |
| 518 | fmt(str, txt, fo) |
| 519 | register char *str, *txt; |
| 520 | register FILE *fo; |
| 521 | { |
| 522 | register int col; |
| 523 | register char *bg, *bl, *pt, ch; |
| 524 | |
| 525 | col = strlen(str); |
| 526 | if (col) |
| 527 | fprintf(fo, "%s", str); |
| 528 | pt = bg = txt; |
| 529 | bl = 0; |
| 530 | while (*bg) { |
| 531 | pt++; |
| 532 | if (++col >72) { |
| 533 | if (!bl) { |
| 534 | bl = bg; |
| 535 | while (*bl && !isspace(*bl)) |
| 536 | bl++; |
| 537 | } |
| 538 | if (!*bl) |
| 539 | goto finish; |
| 540 | ch = *bl; |
| 541 | *bl = '\0'; |
| 542 | fprintf(fo, "%s\n ", bg); |
| 543 | col = 4; |
| 544 | *bl = ch; |
| 545 | pt = bg = ++bl; |
| 546 | bl = 0; |
| 547 | } |
| 548 | if (!*pt) { |
| 549 | finish: |
| 550 | fprintf(fo, "%s\n", bg); |
| 551 | return; |
| 552 | } |
| 553 | if (isspace(*pt)) |
| 554 | bl = pt; |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | /* |
| 559 | * Save the outgoing mail on the passed file. |
| 560 | */ |
| 561 | |
| 562 | savemail(name, hp, fi) |
| 563 | char name[]; |
| 564 | struct header *hp; |
| 565 | FILE *fi; |
| 566 | { |
| 567 | register FILE *fo; |
| 568 | register int c; |
| 569 | long now; |
| 570 | char *n; |
| 571 | |
| 572 | if ((fo = fopen(name, "a")) == NULL) { |
| 573 | perror(name); |
| 574 | return(-1); |
| 575 | } |
| 576 | time(&now); |
| 577 | n = rflag; |
| 578 | if (n == NOSTR) |
| 579 | n = myname; |
| 580 | fprintf(fo, "From %s %s", n, ctime(&now)); |
| 581 | rewind(fi); |
| 582 | for (c = getc(fi); c != EOF; c = getc(fi)) |
| 583 | putc(c, fo); |
| 584 | fprintf(fo, "\n"); |
| 585 | fflush(fo); |
| 586 | if (ferror(fo)) |
| 587 | perror(name); |
| 588 | fclose(fo); |
| 589 | return(0); |
| 590 | } |