| 1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)mail.local.c 4.34 (Berkeley) %G%"; |
| 3 | #endif |
| 4 | |
| 5 | #include <sys/param.h> |
| 6 | #include <sys/stat.h> |
| 7 | #include <sys/file.h> |
| 8 | |
| 9 | #include <ctype.h> |
| 10 | #include <stdio.h> |
| 11 | #include <pwd.h> |
| 12 | #include <utmp.h> |
| 13 | #include <signal.h> |
| 14 | #include <setjmp.h> |
| 15 | #include <sysexits.h> |
| 16 | |
| 17 | #define SENDMAIL "/usr/lib/sendmail" |
| 18 | |
| 19 | /* copylet flags */ |
| 20 | #define REMOTE 1 /* remote mail, add rmtmsg */ |
| 21 | #define ORDINARY 2 |
| 22 | #define ZAP 3 /* zap header and trailing empty line */ |
| 23 | #define FORWARD 4 |
| 24 | |
| 25 | #define LSIZE 256 |
| 26 | #define MAXLET 300 /* maximum number of letters */ |
| 27 | #define MAILMODE 0600 /* mode of created mail */ |
| 28 | |
| 29 | char line[LSIZE]; |
| 30 | char resp[LSIZE]; |
| 31 | struct let { |
| 32 | long adr; |
| 33 | char change; |
| 34 | } let[MAXLET]; |
| 35 | int nlet = 0; |
| 36 | char lfil[50]; |
| 37 | long iop, time(); |
| 38 | char *getenv(); |
| 39 | char *index(); |
| 40 | char lettmp[] = "/tmp/maXXXXX"; |
| 41 | char maildir[] = "/usr/spool/mail/"; |
| 42 | char mailfile[] = "/usr/spool/mail/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; |
| 43 | char dead[] = "dead.letter"; |
| 44 | char forwmsg[] = " forwarded\n"; |
| 45 | FILE *tmpf; |
| 46 | FILE *malf; |
| 47 | char my_name[60]; |
| 48 | char *getlogin(); |
| 49 | int error; |
| 50 | int changed; |
| 51 | int forward; |
| 52 | char from[] = "From "; |
| 53 | long ftell(); |
| 54 | int delex(); |
| 55 | char *ctime(); |
| 56 | int flgf; |
| 57 | int flgp; |
| 58 | int delflg = 1; |
| 59 | int hseqno; |
| 60 | jmp_buf sjbuf; |
| 61 | int rmail; |
| 62 | |
| 63 | main(argc, argv) |
| 64 | char **argv; |
| 65 | { |
| 66 | register int i; |
| 67 | char *name; |
| 68 | struct passwd *pwent; |
| 69 | |
| 70 | if (!(name = getlogin()) || !*name || !(pwent = getpwnam(name)) || |
| 71 | getuid() != pwent->pw_uid) |
| 72 | pwent = getpwuid(getuid()); |
| 73 | strncpy(my_name, pwent ? pwent->pw_name : "???", sizeof(my_name)-1); |
| 74 | if (setjmp(sjbuf)) |
| 75 | done(); |
| 76 | for (i=SIGHUP; i<=SIGTERM; i++) |
| 77 | setsig(i, delex); |
| 78 | i = mkstemp(lettmp); |
| 79 | tmpf = fdopen(i, "r+w"); |
| 80 | if (i < 0 || tmpf == NULL) |
| 81 | panic("mail: %s: cannot open for writing", lettmp); |
| 82 | /* |
| 83 | * This protects against others reading mail from temp file and |
| 84 | * if we exit, the file will be deleted already. |
| 85 | */ |
| 86 | unlink(lettmp); |
| 87 | if (argv[0][0] == 'r') |
| 88 | rmail++; |
| 89 | if (argv[0][0] != 'r' && /* no favors for rmail*/ |
| 90 | (argc == 1 || argv[1][0] == '-' && !any(argv[1][1], "rhd"))) |
| 91 | printmail(argc, argv); |
| 92 | else |
| 93 | bulkmail(argc, argv); |
| 94 | done(); |
| 95 | } |
| 96 | |
| 97 | setsig(i, f) |
| 98 | int i; |
| 99 | int (*f)(); |
| 100 | { |
| 101 | if (signal(i, SIG_IGN) != SIG_IGN) |
| 102 | signal(i, f); |
| 103 | } |
| 104 | |
| 105 | any(c, str) |
| 106 | register int c; |
| 107 | register char *str; |
| 108 | { |
| 109 | |
| 110 | while (*str) |
| 111 | if (c == *str++) |
| 112 | return(1); |
| 113 | return(0); |
| 114 | } |
| 115 | |
| 116 | printmail(argc, argv) |
| 117 | char **argv; |
| 118 | { |
| 119 | int flg, i, j, print; |
| 120 | char *p, *getarg(); |
| 121 | struct stat statb; |
| 122 | |
| 123 | setuid(getuid()); |
| 124 | cat(mailfile, maildir, my_name); |
| 125 | #ifdef notdef |
| 126 | if (stat(mailfile, &statb) >= 0 |
| 127 | && (statb.st_mode & S_IFMT) == S_IFDIR) { |
| 128 | strcat(mailfile, "/"); |
| 129 | strcat(mailfile, my_name); |
| 130 | } |
| 131 | #endif |
| 132 | for (; argc > 1; argv++, argc--) { |
| 133 | if (argv[1][0] != '-') |
| 134 | break; |
| 135 | switch (argv[1][1]) { |
| 136 | |
| 137 | case 'p': |
| 138 | flgp++; |
| 139 | /* fall thru... */ |
| 140 | case 'q': |
| 141 | delflg = 0; |
| 142 | break; |
| 143 | |
| 144 | case 'f': |
| 145 | if (argc >= 3) { |
| 146 | strcpy(mailfile, argv[2]); |
| 147 | argv++, argc--; |
| 148 | } |
| 149 | break; |
| 150 | |
| 151 | case 'b': |
| 152 | forward = 1; |
| 153 | break; |
| 154 | |
| 155 | default: |
| 156 | panic("unknown option %c", argv[1][1]); |
| 157 | /*NOTREACHED*/ |
| 158 | } |
| 159 | } |
| 160 | malf = fopen(mailfile, "r"); |
| 161 | if (malf == NULL) { |
| 162 | printf("No mail.\n"); |
| 163 | return; |
| 164 | } |
| 165 | flock(fileno(malf), LOCK_SH); |
| 166 | copymt(malf, tmpf); |
| 167 | fclose(malf); /* implicit unlock */ |
| 168 | fseek(tmpf, 0L, L_SET); |
| 169 | |
| 170 | changed = 0; |
| 171 | print = 1; |
| 172 | for (i = 0; i < nlet; ) { |
| 173 | j = forward ? i : nlet - i - 1; |
| 174 | if (setjmp(sjbuf)) { |
| 175 | print = 0; |
| 176 | } else { |
| 177 | if (print) |
| 178 | copylet(j, stdout, ORDINARY); |
| 179 | print = 1; |
| 180 | } |
| 181 | if (flgp) { |
| 182 | i++; |
| 183 | continue; |
| 184 | } |
| 185 | setjmp(sjbuf); |
| 186 | fputs("? ", stdout); |
| 187 | fflush(stdout); |
| 188 | if (fgets(resp, LSIZE, stdin) == NULL) |
| 189 | break; |
| 190 | switch (resp[0]) { |
| 191 | |
| 192 | default: |
| 193 | printf("usage\n"); |
| 194 | case '?': |
| 195 | print = 0; |
| 196 | printf("q\tquit\n"); |
| 197 | printf("x\texit without changing mail\n"); |
| 198 | printf("p\tprint\n"); |
| 199 | printf("s[file]\tsave (default mbox)\n"); |
| 200 | printf("w[file]\tsame without header\n"); |
| 201 | printf("-\tprint previous\n"); |
| 202 | printf("d\tdelete\n"); |
| 203 | printf("+\tnext (no delete)\n"); |
| 204 | printf("m user\tmail to user\n"); |
| 205 | printf("! cmd\texecute cmd\n"); |
| 206 | break; |
| 207 | |
| 208 | case '+': |
| 209 | case 'n': |
| 210 | case '\n': |
| 211 | i++; |
| 212 | break; |
| 213 | case 'x': |
| 214 | changed = 0; |
| 215 | case 'q': |
| 216 | goto donep; |
| 217 | case 'p': |
| 218 | break; |
| 219 | case '^': |
| 220 | case '-': |
| 221 | if (--i < 0) |
| 222 | i = 0; |
| 223 | break; |
| 224 | case 'y': |
| 225 | case 'w': |
| 226 | case 's': |
| 227 | flg = 0; |
| 228 | if (resp[1] != '\n' && resp[1] != ' ') { |
| 229 | printf("illegal\n"); |
| 230 | flg++; |
| 231 | print = 0; |
| 232 | continue; |
| 233 | } |
| 234 | if (resp[1] == '\n' || resp[1] == '\0') { |
| 235 | p = getenv("HOME"); |
| 236 | if (p != 0) |
| 237 | cat(resp+1, p, "/mbox"); |
| 238 | else |
| 239 | cat(resp+1, "", "mbox"); |
| 240 | } |
| 241 | for (p = resp+1; (p = getarg(lfil, p)) != NULL; ) { |
| 242 | malf = fopen(lfil, "a"); |
| 243 | if (malf == NULL) { |
| 244 | printf("mail: %s: cannot append\n", |
| 245 | lfil); |
| 246 | flg++; |
| 247 | continue; |
| 248 | } |
| 249 | copylet(j, malf, resp[0]=='w'? ZAP: ORDINARY); |
| 250 | fclose(malf); |
| 251 | } |
| 252 | if (flg) |
| 253 | print = 0; |
| 254 | else { |
| 255 | let[j].change = 'd'; |
| 256 | changed++; |
| 257 | i++; |
| 258 | } |
| 259 | break; |
| 260 | case 'm': |
| 261 | flg = 0; |
| 262 | if (resp[1] == '\n' || resp[1] == '\0') { |
| 263 | i++; |
| 264 | continue; |
| 265 | } |
| 266 | if (resp[1] != ' ') { |
| 267 | printf("invalid command\n"); |
| 268 | flg++; |
| 269 | print = 0; |
| 270 | continue; |
| 271 | } |
| 272 | for (p = resp+1; (p = getarg(lfil, p)) != NULL; ) |
| 273 | if (!sendmail(j, lfil, my_name)) |
| 274 | flg++; |
| 275 | if (flg) |
| 276 | print = 0; |
| 277 | else { |
| 278 | let[j].change = 'd'; |
| 279 | changed++; |
| 280 | i++; |
| 281 | } |
| 282 | break; |
| 283 | case '!': |
| 284 | system(resp+1); |
| 285 | printf("!\n"); |
| 286 | print = 0; |
| 287 | break; |
| 288 | case 'd': |
| 289 | let[j].change = 'd'; |
| 290 | changed++; |
| 291 | i++; |
| 292 | if (resp[1] == 'q') |
| 293 | goto donep; |
| 294 | break; |
| 295 | } |
| 296 | } |
| 297 | donep: |
| 298 | if (changed) |
| 299 | copyback(); |
| 300 | } |
| 301 | |
| 302 | /* copy temp or whatever back to /usr/spool/mail */ |
| 303 | copyback() |
| 304 | { |
| 305 | register int i, c; |
| 306 | long oldmask; |
| 307 | int fd, new = 0; |
| 308 | struct stat stbuf; |
| 309 | |
| 310 | oldmask = sigblock(sigmask(SIGINT)|sigmask(SIGHUP)|sigmask(SIGQUIT)); |
| 311 | fd = open(mailfile, O_RDWR | O_CREAT, MAILMODE); |
| 312 | if (fd >= 0) { |
| 313 | flock(fd, LOCK_EX); |
| 314 | malf = fdopen(fd, "r+w"); |
| 315 | } |
| 316 | if (fd < 0 || malf == NULL) |
| 317 | panic("can't rewrite %s", lfil); |
| 318 | fstat(fd, &stbuf); |
| 319 | if (stbuf.st_size != let[nlet].adr) { /* new mail has arrived */ |
| 320 | fseek(malf, let[nlet].adr, L_SET); |
| 321 | fseek(tmpf, let[nlet].adr, L_SET); |
| 322 | while ((c = getc(malf)) != EOF) |
| 323 | putc(c, tmpf); |
| 324 | let[++nlet].adr = stbuf.st_size; |
| 325 | new = 1; |
| 326 | fseek(malf, 0L, L_SET); |
| 327 | } |
| 328 | ftruncate(fd, 0L); |
| 329 | for (i = 0; i < nlet; i++) |
| 330 | if (let[i].change != 'd') |
| 331 | copylet(i, malf, ORDINARY); |
| 332 | fclose(malf); /* implict unlock */ |
| 333 | if (new) |
| 334 | printf("New mail has arrived.\n"); |
| 335 | sigsetmask(oldmask); |
| 336 | } |
| 337 | |
| 338 | /* copy mail (f1) to temp (f2) */ |
| 339 | copymt(f1, f2) |
| 340 | FILE *f1, *f2; |
| 341 | { |
| 342 | long nextadr; |
| 343 | |
| 344 | nlet = nextadr = 0; |
| 345 | let[0].adr = 0; |
| 346 | while (fgets(line, LSIZE, f1) != NULL) { |
| 347 | if (isfrom(line)) |
| 348 | let[nlet++].adr = nextadr; |
| 349 | nextadr += strlen(line); |
| 350 | fputs(line, f2); |
| 351 | } |
| 352 | let[nlet].adr = nextadr; /* last plus 1 */ |
| 353 | } |
| 354 | |
| 355 | copylet(n, f, type) |
| 356 | FILE *f; |
| 357 | { |
| 358 | int ch; |
| 359 | long k; |
| 360 | char hostname[MAXHOSTNAMELEN]; |
| 361 | |
| 362 | fseek(tmpf, let[n].adr, L_SET); |
| 363 | k = let[n+1].adr - let[n].adr; |
| 364 | while (k-- > 1 && (ch = getc(tmpf)) != '\n') |
| 365 | if (type != ZAP) |
| 366 | putc(ch, f); |
| 367 | switch (type) { |
| 368 | |
| 369 | case REMOTE: |
| 370 | gethostname(hostname, sizeof (hostname)); |
| 371 | fprintf(f, " remote from %s\n", hostname); |
| 372 | break; |
| 373 | |
| 374 | case FORWARD: |
| 375 | fprintf(f, forwmsg); |
| 376 | break; |
| 377 | |
| 378 | case ORDINARY: |
| 379 | putc(ch, f); |
| 380 | break; |
| 381 | |
| 382 | case ZAP: |
| 383 | break; |
| 384 | |
| 385 | default: |
| 386 | panic("Bad letter type %d to copylet.", type); |
| 387 | } |
| 388 | while (k-- > 1) { |
| 389 | ch = getc(tmpf); |
| 390 | putc(ch, f); |
| 391 | } |
| 392 | if (type != ZAP || ch != '\n') |
| 393 | putc(getc(tmpf), f); |
| 394 | } |
| 395 | |
| 396 | isfrom(lp) |
| 397 | register char *lp; |
| 398 | { |
| 399 | register char *p; |
| 400 | |
| 401 | for (p = from; *p; ) |
| 402 | if (*lp++ != *p++) |
| 403 | return(0); |
| 404 | return(1); |
| 405 | } |
| 406 | |
| 407 | bulkmail(argc, argv) |
| 408 | char **argv; |
| 409 | { |
| 410 | char *truename; |
| 411 | int first; |
| 412 | register char *cp; |
| 413 | char *newargv[1000]; |
| 414 | register char **ap; |
| 415 | register char **vp; |
| 416 | int dflag; |
| 417 | |
| 418 | dflag = 0; |
| 419 | delflg = 0; |
| 420 | if (argc < 1) { |
| 421 | fprintf(stderr, "puke\n"); |
| 422 | return; |
| 423 | } |
| 424 | for (vp = argv, ap = newargv + 1; (*ap = *vp++) != 0; ap++) |
| 425 | if (ap[0][0] == '-' && ap[0][1] == 'd') |
| 426 | dflag++; |
| 427 | if (!dflag) { |
| 428 | /* give it to sendmail, rah rah! */ |
| 429 | unlink(lettmp); |
| 430 | ap = newargv+1; |
| 431 | if (rmail) |
| 432 | *ap-- = "-s"; |
| 433 | *ap = "-sendmail"; |
| 434 | setuid(getuid()); |
| 435 | execv(SENDMAIL, ap); |
| 436 | perror(SENDMAIL); |
| 437 | exit(EX_UNAVAILABLE); |
| 438 | } |
| 439 | |
| 440 | truename = 0; |
| 441 | line[0] = '\0'; |
| 442 | |
| 443 | /* |
| 444 | * When we fall out of this, argv[1] should be first name, |
| 445 | * argc should be number of names + 1. |
| 446 | */ |
| 447 | |
| 448 | while (argc > 1 && *argv[1] == '-') { |
| 449 | cp = *++argv; |
| 450 | argc--; |
| 451 | switch (cp[1]) { |
| 452 | case 'r': |
| 453 | if (argc <= 1) |
| 454 | usage(); |
| 455 | if (strcmp(my_name, "root") == 0 || |
| 456 | strcmp(my_name, "daemon") == 0 || |
| 457 | strcmp(my_name, "network") == 0 || |
| 458 | strcmp(my_name, "uucp")) { |
| 459 | gaver++; |
| 460 | strcpy(truename, argv[1]); |
| 461 | fgets(line, LSIZE, stdin); |
| 462 | if (strncmp("From", line, 4) == 0) |
| 463 | line[0] = '\0'; |
| 464 | } |
| 465 | argv++; |
| 466 | argc--; |
| 467 | break; |
| 468 | |
| 469 | case 'h': |
| 470 | if (argc <= 1) |
| 471 | usage(); |
| 472 | hseqno = atoi(argv[1]); |
| 473 | argv++; |
| 474 | argc--; |
| 475 | break; |
| 476 | |
| 477 | case 'd': |
| 478 | break; |
| 479 | |
| 480 | default: |
| 481 | usage(); |
| 482 | } |
| 483 | } |
| 484 | if (argc <= 1) |
| 485 | usage(); |
| 486 | if (truename == 0) |
| 487 | truename = my_name; |
| 488 | time(&iop); |
| 489 | fprintf(tmpf, "%s%s %s", from, truename, ctime(&iop)); |
| 490 | iop = ftell(tmpf); |
| 491 | flgf = first = 1; |
| 492 | for (;;) { |
| 493 | if (first) { |
| 494 | first = 0; |
| 495 | if (*line == '\0' && fgets(line, LSIZE, stdin) == NULL) |
| 496 | break; |
| 497 | } else { |
| 498 | if (fgets(line, LSIZE, stdin) == NULL) |
| 499 | break; |
| 500 | } |
| 501 | if (*line == '.' && line[1] == '\n' && isatty(fileno(stdin))) |
| 502 | break; |
| 503 | if (isfrom(line)) |
| 504 | putc('>', tmpf); |
| 505 | fputs(line, tmpf); |
| 506 | flgf = 0; |
| 507 | } |
| 508 | putc('\n', tmpf); |
| 509 | nlet = 1; |
| 510 | let[0].adr = 0; |
| 511 | let[1].adr = ftell(tmpf); |
| 512 | if (flgf) |
| 513 | return; |
| 514 | while (--argc > 0) |
| 515 | if (!sendmail(0, *++argv, truename)) |
| 516 | error++; |
| 517 | if (error && safefile(dead)) { |
| 518 | setuid(getuid()); |
| 519 | malf = fopen(dead, "w"); |
| 520 | if (malf == NULL) { |
| 521 | printf("mail: cannot open %s\n", dead); |
| 522 | fclose(tmpf); |
| 523 | return; |
| 524 | } |
| 525 | copylet(0, malf, ZAP); |
| 526 | fclose(malf); |
| 527 | printf("Mail saved in %s\n", dead); |
| 528 | } |
| 529 | fclose(tmpf); |
| 530 | } |
| 531 | |
| 532 | sendrmt(n, name) |
| 533 | char *name; |
| 534 | { |
| 535 | FILE *rmf, *popen(); |
| 536 | register char *p; |
| 537 | char rsys[64], cmd[64]; |
| 538 | register pid; |
| 539 | int sts; |
| 540 | |
| 541 | #ifdef notdef |
| 542 | if (any('^', name)) { |
| 543 | while (p = index(name, '^')) |
| 544 | *p = '!'; |
| 545 | if (strncmp(name, "researc", 7)) { |
| 546 | strcpy(rsys, "research"); |
| 547 | if (*name != '!') |
| 548 | --name; |
| 549 | goto skip; |
| 550 | } |
| 551 | } |
| 552 | #endif |
| 553 | for (p=rsys; *name!='!'; *p++ = *name++) |
| 554 | if (*name=='\0') |
| 555 | return(0); /* local address, no '!' */ |
| 556 | *p = '\0'; |
| 557 | if (name[1]=='\0') { |
| 558 | printf("null name\n"); |
| 559 | return(0); |
| 560 | } |
| 561 | skip: |
| 562 | if ((pid = fork()) == -1) { |
| 563 | fprintf(stderr, "mail: can't create proc for remote\n"); |
| 564 | return(0); |
| 565 | } |
| 566 | if (pid) { |
| 567 | while (wait(&sts) != pid) { |
| 568 | if (wait(&sts)==-1) |
| 569 | return(0); |
| 570 | } |
| 571 | return(!sts); |
| 572 | } |
| 573 | setuid(getuid()); |
| 574 | if (any('!', name+1)) |
| 575 | (void)sprintf(cmd, "uux - %s!rmail \\(%s\\)", rsys, name+1); |
| 576 | else |
| 577 | (void)sprintf(cmd, "uux - %s!rmail %s", rsys, name+1); |
| 578 | if ((rmf=popen(cmd, "w")) == NULL) |
| 579 | exit(1); |
| 580 | copylet(n, rmf, REMOTE); |
| 581 | exit(pclose(rmf) != 0); |
| 582 | } |
| 583 | |
| 584 | usage() |
| 585 | { |
| 586 | |
| 587 | fprintf(stderr, "Usage: mail [ -f ] people . . .\n"); |
| 588 | error = EX_USAGE; |
| 589 | done(); |
| 590 | } |
| 591 | |
| 592 | #include <sys/socket.h> |
| 593 | #include <netinet/in.h> |
| 594 | #include <netdb.h> |
| 595 | |
| 596 | notifybiff(msg) |
| 597 | char *msg; |
| 598 | { |
| 599 | static struct sockaddr_in addr; |
| 600 | static int f = -1; |
| 601 | |
| 602 | if (addr.sin_family == 0) { |
| 603 | struct hostent *hp = gethostbyname("localhost"); |
| 604 | struct servent *sp = getservbyname("biff", "udp"); |
| 605 | |
| 606 | if (hp && sp) { |
| 607 | addr.sin_family = hp->h_addrtype; |
| 608 | bcopy(hp->h_addr, &addr.sin_addr, hp->h_length); |
| 609 | addr.sin_port = sp->s_port; |
| 610 | } |
| 611 | } |
| 612 | if (addr.sin_family) { |
| 613 | if (f < 0) |
| 614 | f = socket(AF_INET, SOCK_DGRAM, 0); |
| 615 | if (f >= 0) |
| 616 | sendto(f, msg, strlen(msg)+1, 0, &addr, sizeof (addr)); |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | sendmail(n, name, fromaddr) |
| 621 | int n; |
| 622 | char *name, *fromaddr; |
| 623 | { |
| 624 | char file[256]; |
| 625 | int mask, fd; |
| 626 | struct passwd *pw; |
| 627 | #ifdef notdef |
| 628 | struct stat statb; |
| 629 | #endif |
| 630 | char buf[128]; |
| 631 | |
| 632 | if (*name=='!') |
| 633 | name++; |
| 634 | if (any('!', name)) |
| 635 | return (sendrmt(n, name)); |
| 636 | if ((pw = getpwnam(name)) == NULL) { |
| 637 | printf("mail: can't send to %s\n", name); |
| 638 | return(0); |
| 639 | } |
| 640 | cat(file, maildir, name); |
| 641 | #ifdef notdef |
| 642 | if (stat(file, &statb) >= 0 && (statb.st_mode & S_IFMT) == S_IFDIR) { |
| 643 | strcat(file, "/"); |
| 644 | strcat(file, name); |
| 645 | } |
| 646 | #endif |
| 647 | if (!safefile(file)) |
| 648 | return(0); |
| 649 | fd = open(file, O_WRONLY | O_CREAT, MAILMODE); |
| 650 | if (fd >= 0) { |
| 651 | flock(fd, LOCK_EX); |
| 652 | malf = fdopen(fd, "a"); |
| 653 | } |
| 654 | if (fd < 0 || malf == NULL) { |
| 655 | close(fd); |
| 656 | printf("mail: %s: cannot append\n", file); |
| 657 | return(0); |
| 658 | } |
| 659 | fchown(fd, pw->pw_uid, pw->pw_gid); |
| 660 | (void)sprintf(buf, "%s@%ld\n", name, ftell(malf)); |
| 661 | copylet(n, malf, ORDINARY); |
| 662 | fclose(malf); |
| 663 | notifybiff(buf); |
| 664 | return(1); |
| 665 | } |
| 666 | |
| 667 | delex(i) |
| 668 | { |
| 669 | if (i != SIGINT) { |
| 670 | setsig(i, SIG_DFL); |
| 671 | sigsetmask(sigblock(0L) &~ sigmask(i)); |
| 672 | } |
| 673 | putc('\n', stderr); |
| 674 | if (delflg) |
| 675 | longjmp(sjbuf, 1); |
| 676 | if (error == 0) |
| 677 | error = i; |
| 678 | done(); |
| 679 | } |
| 680 | |
| 681 | done() |
| 682 | { |
| 683 | |
| 684 | unlink(lettmp); |
| 685 | exit(error); |
| 686 | } |
| 687 | |
| 688 | cat(to, from1, from2) |
| 689 | char *to, *from1, *from2; |
| 690 | { |
| 691 | register char *cp, *dp; |
| 692 | |
| 693 | cp = to; |
| 694 | for (dp = from1; *cp = *dp++; cp++) |
| 695 | ; |
| 696 | for (dp = from2; *cp++ = *dp++; ) |
| 697 | ; |
| 698 | } |
| 699 | |
| 700 | /* copy p... into s, update p */ |
| 701 | char * |
| 702 | getarg(s, p) |
| 703 | register char *s, *p; |
| 704 | { |
| 705 | while (*p == ' ' || *p == '\t') |
| 706 | p++; |
| 707 | if (*p == '\n' || *p == '\0') |
| 708 | return(NULL); |
| 709 | while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') |
| 710 | *s++ = *p++; |
| 711 | *s = '\0'; |
| 712 | return(p); |
| 713 | } |
| 714 | |
| 715 | safefile(f) |
| 716 | char *f; |
| 717 | { |
| 718 | struct stat statb; |
| 719 | |
| 720 | if (lstat(f, &statb) < 0) |
| 721 | return (1); |
| 722 | if (statb.st_nlink != 1 || (statb.st_mode & S_IFMT) == S_IFLNK) { |
| 723 | fprintf(stderr, |
| 724 | "mail: %s has more than one link or is a symbolic link\n", |
| 725 | f); |
| 726 | return (0); |
| 727 | } |
| 728 | return (1); |
| 729 | } |
| 730 | |
| 731 | panic(msg, a1, a2, a3) |
| 732 | char *msg; |
| 733 | { |
| 734 | |
| 735 | fprintf(stderr, "mail: "); |
| 736 | fprintf(stderr, msg, a1, a2, a3); |
| 737 | fprintf(stderr, "\n"); |
| 738 | done(); |
| 739 | } |