| 1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)msgs.c 4.16 (Berkeley) %G%"; |
| 3 | #endif lint |
| 4 | /* |
| 5 | * msgs - a user bulletin board program |
| 6 | * |
| 7 | * usage: |
| 8 | * msgs [fhlopq] [[-]number] to read messages |
| 9 | * msgs -s to place messages |
| 10 | * msgs -c [-days] to clean up the bulletin board |
| 11 | * |
| 12 | * prompt commands are: |
| 13 | * y print message |
| 14 | * n flush message, go to next message |
| 15 | * q flush message, quit |
| 16 | * p print message, turn on 'pipe thru more' mode |
| 17 | * P print message, turn off 'pipe thru more' mode |
| 18 | * - reprint last message |
| 19 | * s[-][<num>] [<filename>] save message |
| 20 | * m[-][<num>] mail with message in temp mbox |
| 21 | * x exit without flushing this message |
| 22 | * <num> print message number <num> |
| 23 | */ |
| 24 | |
| 25 | #define V7 /* will look for TERM in the environment */ |
| 26 | #define OBJECT /* will object to messages without Subjects */ |
| 27 | /* #define REJECT /* will reject messages without Subjects |
| 28 | (OBJECT must be defined also) */ |
| 29 | /* #define UNBUFFERED /* use unbuffered output */ |
| 30 | |
| 31 | #include <stdio.h> |
| 32 | #include <sys/param.h> |
| 33 | #include <signal.h> |
| 34 | #include <sys/dir.h> |
| 35 | #include <sys/stat.h> |
| 36 | #include <ctype.h> |
| 37 | #include <pwd.h> |
| 38 | #include <sgtty.h> |
| 39 | #include <setjmp.h> |
| 40 | #include "msgs.h" |
| 41 | |
| 42 | #define CMODE 0666 /* bounds file creation mode */ |
| 43 | #define NO 0 |
| 44 | #define YES 1 |
| 45 | #define SUPERUSER 0 /* superuser uid */ |
| 46 | #define DAEMON 1 /* daemon uid */ |
| 47 | #define NLINES 24 /* default number of lines/crt screen */ |
| 48 | #define NDAYS 21 /* default keep time for messages */ |
| 49 | #define DAYS *24*60*60 /* seconds/day */ |
| 50 | #define TEMP "/tmp/msgXXXXXX" |
| 51 | #define MSGSRC ".msgsrc" /* user's rc file */ |
| 52 | #define BOUNDS "bounds" /* message bounds file */ |
| 53 | #define NEXT "Next message? [yq]" |
| 54 | #define MORE "More? [ynq]" |
| 55 | #define NOMORE "(No more) [q] ?" |
| 56 | |
| 57 | typedef char bool; |
| 58 | |
| 59 | FILE *newmsg; |
| 60 | char *sep = "-"; |
| 61 | char inbuf[BUFSIZ]; |
| 62 | char fname[128]; |
| 63 | char cmdbuf[128]; |
| 64 | char subj[128]; |
| 65 | char from[128]; |
| 66 | char date[128]; |
| 67 | char *ptr; |
| 68 | char *in; |
| 69 | bool local; |
| 70 | bool ruptible; |
| 71 | bool totty; |
| 72 | bool seenfrom; |
| 73 | bool seensubj; |
| 74 | bool blankline; |
| 75 | bool printing = NO; |
| 76 | bool mailing = NO; |
| 77 | bool quitit = NO; |
| 78 | bool sending = NO; |
| 79 | bool intrpflg = NO; |
| 80 | bool tstpflag = NO; |
| 81 | int uid; |
| 82 | int msg; |
| 83 | int prevmsg; |
| 84 | int lct; |
| 85 | int nlines; |
| 86 | int Lpp = NLINES; |
| 87 | time_t t; |
| 88 | time_t keep; |
| 89 | struct sgttyb otty; |
| 90 | |
| 91 | char *ctime(); |
| 92 | char *nxtfld(); |
| 93 | int onintr(); |
| 94 | int onsusp(); |
| 95 | off_t ftell(); |
| 96 | FILE *popen(); |
| 97 | struct passwd *getpwuid(); |
| 98 | |
| 99 | extern int errno; |
| 100 | |
| 101 | /* option initialization */ |
| 102 | bool hdrs = NO; |
| 103 | bool qopt = NO; |
| 104 | bool hush = NO; |
| 105 | bool send = NO; |
| 106 | bool locomode = NO; |
| 107 | bool pause = NO; |
| 108 | bool clean = NO; |
| 109 | bool lastcmd = NO; |
| 110 | jmp_buf tstpbuf; |
| 111 | |
| 112 | main(argc, argv) |
| 113 | int argc; char *argv[]; |
| 114 | { |
| 115 | bool newrc, already; |
| 116 | int rcfirst = 0; /* first message to print (from .rc) */ |
| 117 | int rcback = 0; /* amount to back off of rcfirst */ |
| 118 | int firstmsg, nextmsg, lastmsg = 0; |
| 119 | int blast = 0; |
| 120 | FILE *bounds, *msgsrc; |
| 121 | |
| 122 | #ifdef UNBUFFERED |
| 123 | setbuf(stdout, NULL); |
| 124 | #endif |
| 125 | |
| 126 | gtty(fileno(stdout), &otty); |
| 127 | time(&t); |
| 128 | setuid(uid = getuid()); |
| 129 | ruptible = (signal(SIGINT, SIG_IGN) == SIG_DFL); |
| 130 | if (ruptible) |
| 131 | signal(SIGINT, SIG_DFL); |
| 132 | |
| 133 | argc--, argv++; |
| 134 | while (argc > 0) { |
| 135 | if (isdigit(argv[0][0])) { /* starting message # */ |
| 136 | rcfirst = atoi(argv[0]); |
| 137 | } |
| 138 | else if (isdigit(argv[0][1])) { /* backward offset */ |
| 139 | rcback = atoi( &( argv[0][1] ) ); |
| 140 | } |
| 141 | else { |
| 142 | ptr = *argv; |
| 143 | while (*ptr) switch (*ptr++) { |
| 144 | |
| 145 | case '-': |
| 146 | break; |
| 147 | |
| 148 | case 'c': |
| 149 | if (uid != SUPERUSER && uid != DAEMON) { |
| 150 | fprintf(stderr, "Sorry\n"); |
| 151 | exit(1); |
| 152 | } |
| 153 | clean = YES; |
| 154 | break; |
| 155 | |
| 156 | case 'f': /* silently */ |
| 157 | hush = YES; |
| 158 | break; |
| 159 | |
| 160 | case 'h': /* headers only */ |
| 161 | hdrs = YES; |
| 162 | break; |
| 163 | |
| 164 | case 'l': /* local msgs only */ |
| 165 | locomode = YES; |
| 166 | break; |
| 167 | |
| 168 | case 'o': /* option to save last message */ |
| 169 | lastcmd = YES; |
| 170 | break; |
| 171 | |
| 172 | case 'p': /* pipe thru 'more' during long msgs */ |
| 173 | pause = YES; |
| 174 | break; |
| 175 | |
| 176 | case 'q': /* query only */ |
| 177 | qopt = YES; |
| 178 | break; |
| 179 | |
| 180 | case 's': /* sending TO msgs */ |
| 181 | send = YES; |
| 182 | break; |
| 183 | |
| 184 | default: |
| 185 | fprintf(stderr, |
| 186 | "usage: msgs [fhlopq] [[-]number]\n"); |
| 187 | exit(1); |
| 188 | } |
| 189 | } |
| 190 | argc--, argv++; |
| 191 | } |
| 192 | |
| 193 | /* |
| 194 | * determine current message bounds |
| 195 | */ |
| 196 | sprintf(fname, "%s/%s", USRMSGS, BOUNDS); |
| 197 | bounds = fopen(fname, "r"); |
| 198 | |
| 199 | if (bounds != NULL) { |
| 200 | fscanf(bounds, "%d %d\n", &firstmsg, &lastmsg); |
| 201 | fclose(bounds); |
| 202 | blast = lastmsg; /* save upper bound */ |
| 203 | } |
| 204 | |
| 205 | if (clean) |
| 206 | keep = t - (rcback? rcback : NDAYS) DAYS; |
| 207 | |
| 208 | if (clean || bounds == NULL) { /* relocate message bounds */ |
| 209 | struct direct *dp; |
| 210 | struct stat stbuf; |
| 211 | bool seenany = NO; |
| 212 | DIR *dirp; |
| 213 | |
| 214 | dirp = opendir(USRMSGS); |
| 215 | if (dirp == NULL) { |
| 216 | perror(USRMSGS); |
| 217 | exit(errno); |
| 218 | } |
| 219 | |
| 220 | firstmsg = 32767; |
| 221 | lastmsg = 0; |
| 222 | |
| 223 | for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)){ |
| 224 | register char *cp = dp->d_name; |
| 225 | register int i = 0; |
| 226 | |
| 227 | if (dp->d_ino == 0) |
| 228 | continue; |
| 229 | if (dp->d_namlen == 0) |
| 230 | continue; |
| 231 | |
| 232 | if (clean) |
| 233 | sprintf(inbuf, "%s/%s", USRMSGS, cp); |
| 234 | |
| 235 | while (isdigit(*cp)) |
| 236 | i = i * 10 + *cp++ - '0'; |
| 237 | if (*cp) |
| 238 | continue; /* not a message! */ |
| 239 | |
| 240 | if (clean) { |
| 241 | if (stat(inbuf, &stbuf) != 0) |
| 242 | continue; |
| 243 | if (stbuf.st_mtime < keep |
| 244 | && stbuf.st_mode&S_IWRITE) { |
| 245 | unlink(inbuf); |
| 246 | continue; |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | if (i > lastmsg) |
| 251 | lastmsg = i; |
| 252 | if (i < firstmsg) |
| 253 | firstmsg = i; |
| 254 | seenany = YES; |
| 255 | } |
| 256 | closedir(dirp); |
| 257 | |
| 258 | if (!seenany) { |
| 259 | if (blast != 0) /* never lower the upper bound! */ |
| 260 | lastmsg = blast; |
| 261 | firstmsg = lastmsg + 1; |
| 262 | } |
| 263 | else if (blast > lastmsg) |
| 264 | lastmsg = blast; |
| 265 | |
| 266 | if (!send) { |
| 267 | bounds = fopen(fname, "w"); |
| 268 | if (bounds == NULL) { |
| 269 | perror(fname); |
| 270 | exit(errno); |
| 271 | } |
| 272 | chmod(fname, CMODE); |
| 273 | fprintf(bounds, "%d %d\n", firstmsg, lastmsg); |
| 274 | fclose(bounds); |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | if (send) { |
| 279 | /* |
| 280 | * Send mode - place msgs in USRMSGS |
| 281 | */ |
| 282 | bounds = fopen(fname, "w"); |
| 283 | if (bounds == NULL) { |
| 284 | perror(fname); |
| 285 | exit(errno); |
| 286 | } |
| 287 | |
| 288 | nextmsg = lastmsg + 1; |
| 289 | sprintf(fname, "%s/%d", USRMSGS, nextmsg); |
| 290 | newmsg = fopen(fname, "w"); |
| 291 | if (newmsg == NULL) { |
| 292 | perror(fname); |
| 293 | exit(errno); |
| 294 | } |
| 295 | chmod(fname, 0644); |
| 296 | |
| 297 | fprintf(bounds, "%d %d\n", firstmsg, nextmsg); |
| 298 | fclose(bounds); |
| 299 | |
| 300 | sending = YES; |
| 301 | if (ruptible) |
| 302 | signal(SIGINT, onintr); |
| 303 | |
| 304 | if (isatty(fileno(stdin))) { |
| 305 | ptr = getpwuid(uid)->pw_name; |
| 306 | printf("Message %d:\nFrom %s %sSubject: ", |
| 307 | nextmsg, ptr, ctime(&t)); |
| 308 | fflush(stdout); |
| 309 | fgets(inbuf, sizeof inbuf, stdin); |
| 310 | putchar('\n'); |
| 311 | fflush(stdout); |
| 312 | fprintf(newmsg, "From %s %sSubject: %s\n", |
| 313 | ptr, ctime(&t), inbuf); |
| 314 | blankline = seensubj = YES; |
| 315 | } |
| 316 | else |
| 317 | blankline = seensubj = NO; |
| 318 | for (;;) { |
| 319 | fgets(inbuf, sizeof inbuf, stdin); |
| 320 | if (feof(stdin) || ferror(stdin)) |
| 321 | break; |
| 322 | blankline = (blankline || (inbuf[0] == '\n')); |
| 323 | seensubj = (seensubj || (!blankline && (strncmp(inbuf, "Subj", 4) == 0))); |
| 324 | fputs(inbuf, newmsg); |
| 325 | } |
| 326 | #ifdef OBJECT |
| 327 | if (!seensubj) { |
| 328 | printf("NOTICE: Messages should have a Subject field!\n"); |
| 329 | #ifdef REJECT |
| 330 | unlink(fname); |
| 331 | #endif |
| 332 | exit(1); |
| 333 | } |
| 334 | #endif |
| 335 | exit(ferror(stdin)); |
| 336 | } |
| 337 | if (clean) |
| 338 | exit(0); |
| 339 | |
| 340 | /* |
| 341 | * prepare to display messages |
| 342 | */ |
| 343 | totty = (isatty(fileno(stdout)) != 0); |
| 344 | pause = pause && totty; |
| 345 | |
| 346 | sprintf(fname, "%s/%s", getenv("HOME"), MSGSRC); |
| 347 | msgsrc = fopen(fname, "r"); |
| 348 | if (msgsrc) { |
| 349 | newrc = NO; |
| 350 | fscanf(msgsrc, "%d\n", &nextmsg); |
| 351 | fclose(msgsrc); |
| 352 | if (nextmsg > lastmsg+1) { |
| 353 | printf("Warning: bounds have been reset (%d, %d)\n", |
| 354 | firstmsg, lastmsg); |
| 355 | ftruncate(fileno(msgsrc), 0); |
| 356 | newrc = YES; |
| 357 | } |
| 358 | else if (!rcfirst) |
| 359 | rcfirst = nextmsg - rcback; |
| 360 | } |
| 361 | else |
| 362 | newrc = YES; |
| 363 | msgsrc = fopen(fname, "a"); |
| 364 | if (msgsrc == NULL) { |
| 365 | perror(fname); |
| 366 | exit(errno); |
| 367 | } |
| 368 | if (rcfirst) { |
| 369 | if (rcfirst > lastmsg+1) { |
| 370 | printf("Warning: the last message is number %d.\n", |
| 371 | lastmsg); |
| 372 | rcfirst = nextmsg; |
| 373 | } |
| 374 | if (rcfirst > firstmsg) |
| 375 | firstmsg = rcfirst; /* don't set below first msg */ |
| 376 | } |
| 377 | if (newrc) { |
| 378 | nextmsg = firstmsg; |
| 379 | fseek(msgsrc, 0L, 0); |
| 380 | fprintf(msgsrc, "%d\n", nextmsg); |
| 381 | fflush(msgsrc); |
| 382 | } |
| 383 | |
| 384 | #ifdef V7 |
| 385 | if (totty) { |
| 386 | if (tgetent(inbuf, getenv("TERM")) <= 0 |
| 387 | || (Lpp = tgetnum("li")) <= 0) { |
| 388 | Lpp = NLINES; |
| 389 | } |
| 390 | } |
| 391 | #endif |
| 392 | Lpp -= 6; /* for headers, etc. */ |
| 393 | |
| 394 | already = NO; |
| 395 | prevmsg = firstmsg; |
| 396 | printing = YES; |
| 397 | if (ruptible) |
| 398 | signal(SIGINT, onintr); |
| 399 | |
| 400 | /* |
| 401 | * Main program loop |
| 402 | */ |
| 403 | for (msg = firstmsg; msg <= lastmsg; msg++) { |
| 404 | |
| 405 | sprintf(fname, "%s/%d", USRMSGS, msg); |
| 406 | newmsg = fopen(fname, "r"); |
| 407 | if (newmsg == NULL) |
| 408 | continue; |
| 409 | |
| 410 | gfrsub(newmsg); /* get From and Subject fields */ |
| 411 | if (locomode && !local) { |
| 412 | fclose(newmsg); |
| 413 | continue; |
| 414 | } |
| 415 | |
| 416 | if (qopt) { /* This has to be located here */ |
| 417 | printf("There are new messages.\n"); |
| 418 | exit(0); |
| 419 | } |
| 420 | |
| 421 | if (already && !hdrs) |
| 422 | putchar('\n'); |
| 423 | already = YES; |
| 424 | |
| 425 | /* |
| 426 | * Print header |
| 427 | */ |
| 428 | again: |
| 429 | if (totty) |
| 430 | signal(SIGTSTP, onsusp); |
| 431 | (void) setjmp(tstpbuf); |
| 432 | nlines = 2; |
| 433 | if (seenfrom) { |
| 434 | printf("Message %d:\nFrom %s %s", msg, from, date); |
| 435 | nlines++; |
| 436 | } |
| 437 | if (seensubj) { |
| 438 | printf("Subject: %s", subj); |
| 439 | nlines++; |
| 440 | } |
| 441 | else { |
| 442 | if (seenfrom) { |
| 443 | putchar('\n'); |
| 444 | nlines++; |
| 445 | } |
| 446 | while (nlines < 6 |
| 447 | && fgets(inbuf, sizeof inbuf, newmsg) |
| 448 | && inbuf[0] != '\n') { |
| 449 | fputs(inbuf, stdout); |
| 450 | nlines++; |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | lct = linecnt(newmsg); |
| 455 | if (lct) |
| 456 | printf("(%d%slines) ", lct, seensubj? " " : " more "); |
| 457 | |
| 458 | if (hdrs) { |
| 459 | printf("\n-----\n"); |
| 460 | fclose(newmsg); |
| 461 | continue; |
| 462 | } |
| 463 | |
| 464 | /* |
| 465 | * Ask user for command |
| 466 | */ |
| 467 | if (totty) |
| 468 | ask(lct? MORE : (msg==lastmsg? NOMORE : NEXT)); |
| 469 | else |
| 470 | inbuf[0] = 'y'; |
| 471 | if (totty) |
| 472 | signal(SIGTSTP, SIG_DFL); |
| 473 | cmnd: |
| 474 | in = inbuf; |
| 475 | switch (*in) { |
| 476 | case 'x': |
| 477 | case 'X': |
| 478 | exit(0); |
| 479 | |
| 480 | case 'q': |
| 481 | case 'Q': |
| 482 | quitit = YES; |
| 483 | printf("--Postponed--\n"); |
| 484 | exit(0); |
| 485 | /* intentional fall-thru */ |
| 486 | case 'n': |
| 487 | case 'N': |
| 488 | if (msg >= nextmsg) sep = "Flushed"; |
| 489 | prevmsg = msg; |
| 490 | break; |
| 491 | |
| 492 | case 'p': |
| 493 | case 'P': |
| 494 | pause = (*in++ == 'p'); |
| 495 | /* intentional fallthru */ |
| 496 | case '\n': |
| 497 | case 'y': |
| 498 | default: |
| 499 | if (*in == '-') { |
| 500 | msg = prevmsg-1; |
| 501 | sep = "replay"; |
| 502 | break; |
| 503 | } |
| 504 | if (isdigit(*in)) { |
| 505 | msg = next(in); |
| 506 | sep = in; |
| 507 | break; |
| 508 | } |
| 509 | |
| 510 | prmesg(nlines + lct + (seensubj? 1 : 0)); |
| 511 | prevmsg = msg; |
| 512 | |
| 513 | } |
| 514 | |
| 515 | printf("--%s--\n", sep); |
| 516 | sep = "-"; |
| 517 | if (msg >= nextmsg) { |
| 518 | nextmsg = msg + 1; |
| 519 | fseek(msgsrc, 0L, 0); |
| 520 | fprintf(msgsrc, "%d\n", nextmsg); |
| 521 | fflush(msgsrc); |
| 522 | } |
| 523 | if (newmsg) |
| 524 | fclose(newmsg); |
| 525 | if (quitit) |
| 526 | break; |
| 527 | } |
| 528 | |
| 529 | /* |
| 530 | * Make sure .rc file gets updated |
| 531 | */ |
| 532 | if (--msg >= nextmsg) { |
| 533 | nextmsg = msg + 1; |
| 534 | fseek(msgsrc, 0L, 0); |
| 535 | fprintf(msgsrc, "%d\n", nextmsg); |
| 536 | fflush(msgsrc); |
| 537 | } |
| 538 | if (already && !quitit && lastcmd && totty) { |
| 539 | /* |
| 540 | * save or reply to last message? |
| 541 | */ |
| 542 | msg = prevmsg; |
| 543 | ask(NOMORE); |
| 544 | if (inbuf[0] == '-' || isdigit(inbuf[0])) |
| 545 | goto cmnd; |
| 546 | } |
| 547 | if (!(already || hush || qopt)) |
| 548 | printf("No new messages.\n"); |
| 549 | exit(0); |
| 550 | } |
| 551 | |
| 552 | prmesg(length) |
| 553 | int length; |
| 554 | { |
| 555 | FILE *outf, *inf; |
| 556 | int c; |
| 557 | |
| 558 | if (pause && length > Lpp) { |
| 559 | signal(SIGPIPE, SIG_IGN); |
| 560 | signal(SIGQUIT, SIG_IGN); |
| 561 | sprintf(cmdbuf, PAGE, Lpp); |
| 562 | outf = popen(cmdbuf, "w"); |
| 563 | if (!outf) |
| 564 | outf = stdout; |
| 565 | else |
| 566 | setbuf(outf, NULL); |
| 567 | } |
| 568 | else |
| 569 | outf = stdout; |
| 570 | |
| 571 | if (seensubj) |
| 572 | putc('\n', outf); |
| 573 | |
| 574 | while (fgets(inbuf, sizeof inbuf, newmsg)) { |
| 575 | fputs(inbuf, outf); |
| 576 | if (ferror(outf)) { |
| 577 | clearerr(outf); |
| 578 | break; |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | if (outf != stdout) { |
| 583 | pclose(outf); |
| 584 | signal(SIGPIPE, SIG_DFL); |
| 585 | signal(SIGQUIT, SIG_DFL); |
| 586 | } |
| 587 | else { |
| 588 | fflush(stdout); |
| 589 | } |
| 590 | |
| 591 | /* trick to force wait on output */ |
| 592 | stty(fileno(stdout), &otty); |
| 593 | } |
| 594 | |
| 595 | onintr() |
| 596 | { |
| 597 | signal(SIGINT, onintr); |
| 598 | if (mailing) |
| 599 | unlink(fname); |
| 600 | if (sending) { |
| 601 | unlink(fname); |
| 602 | puts("--Killed--"); |
| 603 | exit(1); |
| 604 | } |
| 605 | if (printing) { |
| 606 | putchar('\n'); |
| 607 | if (hdrs) |
| 608 | exit(0); |
| 609 | sep = "Interrupt"; |
| 610 | if (newmsg) |
| 611 | fseek(newmsg, 0L, 2); |
| 612 | intrpflg = YES; |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | /* |
| 617 | * We have just gotten a susp. Suspend and prepare to resume. |
| 618 | */ |
| 619 | onsusp() |
| 620 | { |
| 621 | |
| 622 | signal(SIGTSTP, SIG_DFL); |
| 623 | sigsetmask(0); |
| 624 | kill(0, SIGTSTP); |
| 625 | signal(SIGTSTP, onsusp); |
| 626 | if (!mailing) |
| 627 | longjmp(tstpbuf); |
| 628 | } |
| 629 | |
| 630 | linecnt(f) |
| 631 | FILE *f; |
| 632 | { |
| 633 | off_t oldpos = ftell(f); |
| 634 | int l = 0; |
| 635 | char lbuf[BUFSIZ]; |
| 636 | |
| 637 | while (fgets(lbuf, sizeof lbuf, f)) |
| 638 | l++; |
| 639 | clearerr(f); |
| 640 | fseek(f, oldpos, 0); |
| 641 | return (l); |
| 642 | } |
| 643 | |
| 644 | next(buf) |
| 645 | char *buf; |
| 646 | { |
| 647 | int i; |
| 648 | sscanf(buf, "%d", &i); |
| 649 | sprintf(buf, "Goto %d", i); |
| 650 | return(--i); |
| 651 | } |
| 652 | |
| 653 | ask(prompt) |
| 654 | char *prompt; |
| 655 | { |
| 656 | char inch; |
| 657 | int n, cmsg; |
| 658 | off_t oldpos; |
| 659 | FILE *cpfrom, *cpto; |
| 660 | |
| 661 | printf("%s ", prompt); |
| 662 | fflush(stdout); |
| 663 | intrpflg = NO; |
| 664 | gets(inbuf); |
| 665 | if (intrpflg) |
| 666 | inbuf[0] = 'x'; |
| 667 | |
| 668 | /* |
| 669 | * Handle 'mail' and 'save' here. |
| 670 | */ |
| 671 | if ((inch = inbuf[0]) == 's' || inch == 'm') { |
| 672 | if (inbuf[1] == '-') |
| 673 | cmsg = prevmsg; |
| 674 | else if (isdigit(inbuf[1])) |
| 675 | cmsg = atoi(&inbuf[1]); |
| 676 | else |
| 677 | cmsg = msg; |
| 678 | sprintf(fname, "%s/%d", USRMSGS, cmsg); |
| 679 | |
| 680 | oldpos = ftell(newmsg); |
| 681 | |
| 682 | cpfrom = fopen(fname, "r"); |
| 683 | if (!cpfrom) { |
| 684 | printf("Message %d not found\n", cmsg); |
| 685 | ask (prompt); |
| 686 | return; |
| 687 | } |
| 688 | |
| 689 | if (inch == 's') { |
| 690 | in = nxtfld(inbuf); |
| 691 | if (*in) { |
| 692 | for (n=0; in[n] > ' '; n++) { /* sizeof fname? */ |
| 693 | fname[n] = in[n]; |
| 694 | } |
| 695 | fname[n] = NULL; |
| 696 | } |
| 697 | else |
| 698 | strcpy(fname, "Messages"); |
| 699 | } |
| 700 | else { |
| 701 | strcpy(fname, TEMP); |
| 702 | mktemp(fname); |
| 703 | sprintf(cmdbuf, MAIL, fname); |
| 704 | mailing = YES; |
| 705 | } |
| 706 | cpto = fopen(fname, "a"); |
| 707 | if (!cpto) { |
| 708 | perror(fname); |
| 709 | mailing = NO; |
| 710 | fseek(newmsg, oldpos, 0); |
| 711 | ask(prompt); |
| 712 | return; |
| 713 | } |
| 714 | |
| 715 | while (n = fread(inbuf, 1, sizeof inbuf, cpfrom)) |
| 716 | fwrite(inbuf, 1, n, cpto); |
| 717 | |
| 718 | fclose(cpfrom); |
| 719 | fclose(cpto); |
| 720 | fseek(newmsg, oldpos, 0); /* reposition current message */ |
| 721 | if (inch == 's') |
| 722 | printf("Message %d saved in \"%s\"\n", cmsg, fname); |
| 723 | else { |
| 724 | system(cmdbuf); |
| 725 | unlink(fname); |
| 726 | mailing = NO; |
| 727 | } |
| 728 | ask(prompt); |
| 729 | } |
| 730 | } |
| 731 | |
| 732 | gfrsub(infile) |
| 733 | FILE *infile; |
| 734 | { |
| 735 | off_t frompos; |
| 736 | |
| 737 | seensubj = seenfrom = NO; |
| 738 | local = YES; |
| 739 | subj[0] = from[0] = date[0] = NULL; |
| 740 | |
| 741 | /* |
| 742 | * Is this a normal message? |
| 743 | */ |
| 744 | if (fgets(inbuf, sizeof inbuf, infile)) { |
| 745 | if (strncmp(inbuf, "From", 4)==0) { |
| 746 | /* |
| 747 | * expected form starts with From |
| 748 | */ |
| 749 | seenfrom = YES; |
| 750 | frompos = ftell(infile); |
| 751 | ptr = from; |
| 752 | in = nxtfld(inbuf); |
| 753 | if (*in) while (*in && *in > ' ') { |
| 754 | if (*in == ':' || *in == '@' || *in == '!') |
| 755 | local = NO; |
| 756 | *ptr++ = *in++; |
| 757 | /* what about sizeof from ? */ |
| 758 | } |
| 759 | *ptr = NULL; |
| 760 | if (*(in = nxtfld(in))) |
| 761 | strncpy(date, in, sizeof date); |
| 762 | else { |
| 763 | date[0] = '\n'; |
| 764 | date[1] = NULL; |
| 765 | } |
| 766 | } |
| 767 | else { |
| 768 | /* |
| 769 | * not the expected form |
| 770 | */ |
| 771 | fseek(infile, 0L, 0); |
| 772 | return; |
| 773 | } |
| 774 | } |
| 775 | else |
| 776 | /* |
| 777 | * empty file ? |
| 778 | */ |
| 779 | return; |
| 780 | |
| 781 | /* |
| 782 | * look for Subject line until EOF or a blank line |
| 783 | */ |
| 784 | while (fgets(inbuf, sizeof inbuf, infile) |
| 785 | && !(blankline = (inbuf[0] == '\n'))) { |
| 786 | /* |
| 787 | * extract Subject line |
| 788 | */ |
| 789 | if (!seensubj && strncmp(inbuf, "Subj", 4)==0) { |
| 790 | seensubj = YES; |
| 791 | frompos = ftell(infile); |
| 792 | strncpy(subj, nxtfld(inbuf), sizeof subj); |
| 793 | } |
| 794 | } |
| 795 | if (!blankline) |
| 796 | /* |
| 797 | * ran into EOF |
| 798 | */ |
| 799 | fseek(infile, frompos, 0); |
| 800 | |
| 801 | if (!seensubj) |
| 802 | /* |
| 803 | * for possible use with Mail |
| 804 | */ |
| 805 | strncpy(subj, "(No Subject)\n", sizeof subj); |
| 806 | } |
| 807 | |
| 808 | char * |
| 809 | nxtfld(s) |
| 810 | char *s; |
| 811 | { |
| 812 | if (*s) while (*s && *s > ' ') s++; /* skip over this field */ |
| 813 | if (*s) while (*s && *s <= ' ') s++; /* find start of next field */ |
| 814 | return (s); |
| 815 | } |