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1.1 ! root 1: /*- ! 2: * Copyright (c) 1980 The Regents of the University of California. ! 3: * All rights reserved. ! 4: * ! 5: * Redistribution and use in source and binary forms are permitted ! 6: * provided that: (1) source distributions retain this entire copyright ! 7: * notice and comment, and (2) distributions including binaries display ! 8: * the following acknowledgement: ``This product includes software ! 9: * developed by the University of California, Berkeley and its contributors'' ! 10: * in the documentation or other materials provided with the distribution ! 11: * and in all advertising materials mentioning features or use of this ! 12: * software. Neither the name of the University nor the names of its ! 13: * contributors may be used to endorse or promote products derived ! 14: * from this software without specific prior written permission. ! 15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR ! 16: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED ! 17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 18: */ ! 19: ! 20: #ifndef lint ! 21: char copyright[] = ! 22: "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ ! 23: All rights reserved.\n"; ! 24: #endif /* not lint */ ! 25: ! 26: #ifndef lint ! 27: static char sccsid[] = "@(#)msgs.c 5.6 (Berkeley) 5/29/90"; ! 28: #endif /* not lint */ ! 29: ! 30: /* ! 31: * msgs - a user bulletin board program ! 32: * ! 33: * usage: ! 34: * msgs [fhlopq] [[-]number] to read messages ! 35: * msgs -s to place messages ! 36: * msgs -c [-days] to clean up the bulletin board ! 37: * ! 38: * prompt commands are: ! 39: * y print message ! 40: * n flush message, go to next message ! 41: * q flush message, quit ! 42: * p print message, turn on 'pipe thru more' mode ! 43: * P print message, turn off 'pipe thru more' mode ! 44: * - reprint last message ! 45: * s[-][<num>] [<filename>] save message ! 46: * m[-][<num>] mail with message in temp mbox ! 47: * x exit without flushing this message ! 48: * <num> print message number <num> ! 49: */ ! 50: ! 51: #define V7 /* will look for TERM in the environment */ ! 52: #define OBJECT /* will object to messages without Subjects */ ! 53: /* #define REJECT /* will reject messages without Subjects ! 54: (OBJECT must be defined also) */ ! 55: /* #define UNBUFFERED /* use unbuffered output */ ! 56: ! 57: #include <sys/param.h> ! 58: #include <signal.h> ! 59: #include <sys/dir.h> ! 60: #include <sys/stat.h> ! 61: #include <ctype.h> ! 62: #include <pwd.h> ! 63: #include <sgtty.h> ! 64: #include <setjmp.h> ! 65: #include <stdio.h> ! 66: #include "pathnames.h" ! 67: ! 68: #define CMODE 0666 /* bounds file creation mode */ ! 69: #define NO 0 ! 70: #define YES 1 ! 71: #define SUPERUSER 0 /* superuser uid */ ! 72: #define DAEMON 1 /* daemon uid */ ! 73: #define NLINES 24 /* default number of lines/crt screen */ ! 74: #define NDAYS 21 /* default keep time for messages */ ! 75: #define DAYS *24*60*60 /* seconds/day */ ! 76: #define MSGSRC ".msgsrc" /* user's rc file */ ! 77: #define BOUNDS "bounds" /* message bounds file */ ! 78: #define NEXT "Next message? [yq]" ! 79: #define MORE "More? [ynq]" ! 80: #define NOMORE "(No more) [q] ?" ! 81: ! 82: typedef char bool; ! 83: ! 84: FILE *newmsg; ! 85: char *sep = "-"; ! 86: char inbuf[BUFSIZ]; ! 87: char fname[128]; ! 88: char cmdbuf[128]; ! 89: char subj[128]; ! 90: char from[128]; ! 91: char date[128]; ! 92: char *ptr; ! 93: char *in; ! 94: bool local; ! 95: bool ruptible; ! 96: bool totty; ! 97: bool seenfrom; ! 98: bool seensubj; ! 99: bool blankline; ! 100: bool printing = NO; ! 101: bool mailing = NO; ! 102: bool quitit = NO; ! 103: bool sending = NO; ! 104: bool intrpflg = NO; ! 105: bool tstpflag = NO; ! 106: int uid; ! 107: int msg; ! 108: int prevmsg; ! 109: int lct; ! 110: int nlines; ! 111: int Lpp = 0; ! 112: time_t t; ! 113: time_t keep; ! 114: struct sgttyb otty; ! 115: ! 116: char *ctime(); ! 117: char *nxtfld(); ! 118: int onintr(); ! 119: int onsusp(); ! 120: off_t ftell(); ! 121: FILE *popen(); ! 122: struct passwd *getpwuid(); ! 123: ! 124: extern int errno; ! 125: ! 126: /* option initialization */ ! 127: bool hdrs = NO; ! 128: bool qopt = NO; ! 129: bool hush = NO; ! 130: bool send = NO; ! 131: bool locomode = NO; ! 132: bool pause = NO; ! 133: bool clean = NO; ! 134: bool lastcmd = NO; ! 135: jmp_buf tstpbuf; ! 136: ! 137: main(argc, argv) ! 138: int argc; char *argv[]; ! 139: { ! 140: bool newrc, already; ! 141: int rcfirst = 0; /* first message to print (from .rc) */ ! 142: int rcback = 0; /* amount to back off of rcfirst */ ! 143: int firstmsg, nextmsg, lastmsg = 0; ! 144: int blast = 0; ! 145: FILE *bounds, *msgsrc; ! 146: ! 147: #ifdef UNBUFFERED ! 148: setbuf(stdout, NULL); ! 149: #endif ! 150: ! 151: gtty(fileno(stdout), &otty); ! 152: time(&t); ! 153: setuid(uid = getuid()); ! 154: ruptible = (signal(SIGINT, SIG_IGN) == SIG_DFL); ! 155: if (ruptible) ! 156: signal(SIGINT, SIG_DFL); ! 157: ! 158: argc--, argv++; ! 159: while (argc > 0) { ! 160: if (isdigit(argv[0][0])) { /* starting message # */ ! 161: rcfirst = atoi(argv[0]); ! 162: } ! 163: else if (isdigit(argv[0][1])) { /* backward offset */ ! 164: rcback = atoi( &( argv[0][1] ) ); ! 165: } ! 166: else { ! 167: ptr = *argv; ! 168: while (*ptr) switch (*ptr++) { ! 169: ! 170: case '-': ! 171: break; ! 172: ! 173: case 'c': ! 174: if (uid != SUPERUSER && uid != DAEMON) { ! 175: fprintf(stderr, "Sorry\n"); ! 176: exit(1); ! 177: } ! 178: clean = YES; ! 179: break; ! 180: ! 181: case 'f': /* silently */ ! 182: hush = YES; ! 183: break; ! 184: ! 185: case 'h': /* headers only */ ! 186: hdrs = YES; ! 187: break; ! 188: ! 189: case 'l': /* local msgs only */ ! 190: locomode = YES; ! 191: break; ! 192: ! 193: case 'o': /* option to save last message */ ! 194: lastcmd = YES; ! 195: break; ! 196: ! 197: case 'p': /* pipe thru 'more' during long msgs */ ! 198: pause = YES; ! 199: break; ! 200: ! 201: case 'q': /* query only */ ! 202: qopt = YES; ! 203: break; ! 204: ! 205: case 's': /* sending TO msgs */ ! 206: send = YES; ! 207: break; ! 208: ! 209: default: ! 210: fprintf(stderr, ! 211: "usage: msgs [fhlopq] [[-]number]\n"); ! 212: exit(1); ! 213: } ! 214: } ! 215: argc--, argv++; ! 216: } ! 217: ! 218: /* ! 219: * determine current message bounds ! 220: */ ! 221: sprintf(fname, "%s/%s", _PATH_MSGS, BOUNDS); ! 222: bounds = fopen(fname, "r"); ! 223: ! 224: if (bounds != NULL) { ! 225: fscanf(bounds, "%d %d\n", &firstmsg, &lastmsg); ! 226: fclose(bounds); ! 227: blast = lastmsg; /* save upper bound */ ! 228: } ! 229: ! 230: if (clean) ! 231: keep = t - (rcback? rcback : NDAYS) DAYS; ! 232: ! 233: if (clean || bounds == NULL) { /* relocate message bounds */ ! 234: struct direct *dp; ! 235: struct stat stbuf; ! 236: bool seenany = NO; ! 237: DIR *dirp; ! 238: ! 239: dirp = opendir(_PATH_MSGS); ! 240: if (dirp == NULL) { ! 241: perror(_PATH_MSGS); ! 242: exit(errno); ! 243: } ! 244: ! 245: firstmsg = 32767; ! 246: lastmsg = 0; ! 247: ! 248: for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)){ ! 249: register char *cp = dp->d_name; ! 250: register int i = 0; ! 251: ! 252: if (dp->d_ino == 0) ! 253: continue; ! 254: if (dp->d_namlen == 0) ! 255: continue; ! 256: ! 257: if (clean) ! 258: sprintf(inbuf, "%s/%s", _PATH_MSGS, cp); ! 259: ! 260: while (isdigit(*cp)) ! 261: i = i * 10 + *cp++ - '0'; ! 262: if (*cp) ! 263: continue; /* not a message! */ ! 264: ! 265: if (clean) { ! 266: if (stat(inbuf, &stbuf) != 0) ! 267: continue; ! 268: if (stbuf.st_mtime < keep ! 269: && stbuf.st_mode&S_IWRITE) { ! 270: unlink(inbuf); ! 271: continue; ! 272: } ! 273: } ! 274: ! 275: if (i > lastmsg) ! 276: lastmsg = i; ! 277: if (i < firstmsg) ! 278: firstmsg = i; ! 279: seenany = YES; ! 280: } ! 281: closedir(dirp); ! 282: ! 283: if (!seenany) { ! 284: if (blast != 0) /* never lower the upper bound! */ ! 285: lastmsg = blast; ! 286: firstmsg = lastmsg + 1; ! 287: } ! 288: else if (blast > lastmsg) ! 289: lastmsg = blast; ! 290: ! 291: if (!send) { ! 292: bounds = fopen(fname, "w"); ! 293: if (bounds == NULL) { ! 294: perror(fname); ! 295: exit(errno); ! 296: } ! 297: chmod(fname, CMODE); ! 298: fprintf(bounds, "%d %d\n", firstmsg, lastmsg); ! 299: fclose(bounds); ! 300: } ! 301: } ! 302: ! 303: if (send) { ! 304: /* ! 305: * Send mode - place msgs in _PATH_MSGS ! 306: */ ! 307: bounds = fopen(fname, "w"); ! 308: if (bounds == NULL) { ! 309: perror(fname); ! 310: exit(errno); ! 311: } ! 312: ! 313: nextmsg = lastmsg + 1; ! 314: sprintf(fname, "%s/%d", _PATH_MSGS, nextmsg); ! 315: newmsg = fopen(fname, "w"); ! 316: if (newmsg == NULL) { ! 317: perror(fname); ! 318: exit(errno); ! 319: } ! 320: chmod(fname, 0644); ! 321: ! 322: fprintf(bounds, "%d %d\n", firstmsg, nextmsg); ! 323: fclose(bounds); ! 324: ! 325: sending = YES; ! 326: if (ruptible) ! 327: signal(SIGINT, onintr); ! 328: ! 329: if (isatty(fileno(stdin))) { ! 330: ptr = getpwuid(uid)->pw_name; ! 331: printf("Message %d:\nFrom %s %sSubject: ", ! 332: nextmsg, ptr, ctime(&t)); ! 333: fflush(stdout); ! 334: fgets(inbuf, sizeof inbuf, stdin); ! 335: putchar('\n'); ! 336: fflush(stdout); ! 337: fprintf(newmsg, "From %s %sSubject: %s\n", ! 338: ptr, ctime(&t), inbuf); ! 339: blankline = seensubj = YES; ! 340: } ! 341: else ! 342: blankline = seensubj = NO; ! 343: for (;;) { ! 344: fgets(inbuf, sizeof inbuf, stdin); ! 345: if (feof(stdin) || ferror(stdin)) ! 346: break; ! 347: blankline = (blankline || (inbuf[0] == '\n')); ! 348: seensubj = (seensubj || (!blankline && (strncmp(inbuf, "Subj", 4) == 0))); ! 349: fputs(inbuf, newmsg); ! 350: } ! 351: #ifdef OBJECT ! 352: if (!seensubj) { ! 353: printf("NOTICE: Messages should have a Subject field!\n"); ! 354: #ifdef REJECT ! 355: unlink(fname); ! 356: #endif ! 357: exit(1); ! 358: } ! 359: #endif ! 360: exit(ferror(stdin)); ! 361: } ! 362: if (clean) ! 363: exit(0); ! 364: ! 365: /* ! 366: * prepare to display messages ! 367: */ ! 368: totty = (isatty(fileno(stdout)) != 0); ! 369: pause = pause && totty; ! 370: ! 371: sprintf(fname, "%s/%s", getenv("HOME"), MSGSRC); ! 372: msgsrc = fopen(fname, "r"); ! 373: if (msgsrc) { ! 374: newrc = NO; ! 375: fscanf(msgsrc, "%d\n", &nextmsg); ! 376: fclose(msgsrc); ! 377: if (nextmsg > lastmsg+1) { ! 378: printf("Warning: bounds have been reset (%d, %d)\n", ! 379: firstmsg, lastmsg); ! 380: truncate(fname, 0); ! 381: newrc = YES; ! 382: } ! 383: else if (!rcfirst) ! 384: rcfirst = nextmsg - rcback; ! 385: } ! 386: else ! 387: newrc = YES; ! 388: msgsrc = fopen(fname, "a"); ! 389: if (msgsrc == NULL) { ! 390: perror(fname); ! 391: exit(errno); ! 392: } ! 393: if (rcfirst) { ! 394: if (rcfirst > lastmsg+1) { ! 395: printf("Warning: the last message is number %d.\n", ! 396: lastmsg); ! 397: rcfirst = nextmsg; ! 398: } ! 399: if (rcfirst > firstmsg) ! 400: firstmsg = rcfirst; /* don't set below first msg */ ! 401: } ! 402: if (newrc) { ! 403: nextmsg = firstmsg; ! 404: fseek(msgsrc, 0L, 0); ! 405: fprintf(msgsrc, "%d\n", nextmsg); ! 406: fflush(msgsrc); ! 407: } ! 408: ! 409: #ifdef V7 ! 410: if (totty) { ! 411: struct winsize win; ! 412: if (ioctl(fileno(stdout), TIOCGWINSZ, &win) != -1) ! 413: Lpp = win.ws_row; ! 414: if (Lpp <= 0) { ! 415: if (tgetent(inbuf, getenv("TERM")) <= 0 ! 416: || (Lpp = tgetnum("li")) <= 0) { ! 417: Lpp = NLINES; ! 418: } ! 419: } ! 420: } ! 421: #endif ! 422: Lpp -= 6; /* for headers, etc. */ ! 423: ! 424: already = NO; ! 425: prevmsg = firstmsg; ! 426: printing = YES; ! 427: if (ruptible) ! 428: signal(SIGINT, onintr); ! 429: ! 430: /* ! 431: * Main program loop ! 432: */ ! 433: for (msg = firstmsg; msg <= lastmsg; msg++) { ! 434: ! 435: sprintf(fname, "%s/%d", _PATH_MSGS, msg); ! 436: newmsg = fopen(fname, "r"); ! 437: if (newmsg == NULL) ! 438: continue; ! 439: ! 440: gfrsub(newmsg); /* get From and Subject fields */ ! 441: if (locomode && !local) { ! 442: fclose(newmsg); ! 443: continue; ! 444: } ! 445: ! 446: if (qopt) { /* This has to be located here */ ! 447: printf("There are new messages.\n"); ! 448: exit(0); ! 449: } ! 450: ! 451: if (already && !hdrs) ! 452: putchar('\n'); ! 453: already = YES; ! 454: ! 455: /* ! 456: * Print header ! 457: */ ! 458: again: ! 459: if (totty) ! 460: signal(SIGTSTP, onsusp); ! 461: (void) setjmp(tstpbuf); ! 462: nlines = 2; ! 463: if (seenfrom) { ! 464: printf("Message %d:\nFrom %s %s", msg, from, date); ! 465: nlines++; ! 466: } ! 467: if (seensubj) { ! 468: printf("Subject: %s", subj); ! 469: nlines++; ! 470: } ! 471: else { ! 472: if (seenfrom) { ! 473: putchar('\n'); ! 474: nlines++; ! 475: } ! 476: while (nlines < 6 ! 477: && fgets(inbuf, sizeof inbuf, newmsg) ! 478: && inbuf[0] != '\n') { ! 479: fputs(inbuf, stdout); ! 480: nlines++; ! 481: } ! 482: } ! 483: ! 484: lct = linecnt(newmsg); ! 485: if (lct) ! 486: printf("(%d%slines) ", lct, seensubj? " " : " more "); ! 487: ! 488: if (hdrs) { ! 489: printf("\n-----\n"); ! 490: fclose(newmsg); ! 491: continue; ! 492: } ! 493: ! 494: /* ! 495: * Ask user for command ! 496: */ ! 497: if (totty) ! 498: ask(lct? MORE : (msg==lastmsg? NOMORE : NEXT)); ! 499: else ! 500: inbuf[0] = 'y'; ! 501: if (totty) ! 502: signal(SIGTSTP, SIG_DFL); ! 503: cmnd: ! 504: in = inbuf; ! 505: switch (*in) { ! 506: case 'x': ! 507: case 'X': ! 508: exit(0); ! 509: ! 510: case 'q': ! 511: case 'Q': ! 512: quitit = YES; ! 513: printf("--Postponed--\n"); ! 514: exit(0); ! 515: /* intentional fall-thru */ ! 516: case 'n': ! 517: case 'N': ! 518: if (msg >= nextmsg) sep = "Flushed"; ! 519: prevmsg = msg; ! 520: break; ! 521: ! 522: case 'p': ! 523: case 'P': ! 524: pause = (*in++ == 'p'); ! 525: /* intentional fallthru */ ! 526: case '\n': ! 527: case 'y': ! 528: default: ! 529: if (*in == '-') { ! 530: msg = prevmsg-1; ! 531: sep = "replay"; ! 532: break; ! 533: } ! 534: if (isdigit(*in)) { ! 535: msg = next(in); ! 536: sep = in; ! 537: break; ! 538: } ! 539: ! 540: prmesg(nlines + lct + (seensubj? 1 : 0)); ! 541: prevmsg = msg; ! 542: ! 543: } ! 544: ! 545: printf("--%s--\n", sep); ! 546: sep = "-"; ! 547: if (msg >= nextmsg) { ! 548: nextmsg = msg + 1; ! 549: fseek(msgsrc, 0L, 0); ! 550: fprintf(msgsrc, "%d\n", nextmsg); ! 551: fflush(msgsrc); ! 552: } ! 553: if (newmsg) ! 554: fclose(newmsg); ! 555: if (quitit) ! 556: break; ! 557: } ! 558: ! 559: /* ! 560: * Make sure .rc file gets updated ! 561: */ ! 562: if (--msg >= nextmsg) { ! 563: nextmsg = msg + 1; ! 564: fseek(msgsrc, 0L, 0); ! 565: fprintf(msgsrc, "%d\n", nextmsg); ! 566: fflush(msgsrc); ! 567: } ! 568: if (already && !quitit && lastcmd && totty) { ! 569: /* ! 570: * save or reply to last message? ! 571: */ ! 572: msg = prevmsg; ! 573: ask(NOMORE); ! 574: if (inbuf[0] == '-' || isdigit(inbuf[0])) ! 575: goto cmnd; ! 576: } ! 577: if (!(already || hush || qopt)) ! 578: printf("No new messages.\n"); ! 579: exit(0); ! 580: } ! 581: ! 582: prmesg(length) ! 583: int length; ! 584: { ! 585: FILE *outf, *inf; ! 586: int c; ! 587: ! 588: if (pause && length > Lpp) { ! 589: signal(SIGPIPE, SIG_IGN); ! 590: signal(SIGQUIT, SIG_IGN); ! 591: sprintf(cmdbuf, _PATH_PAGER, Lpp); ! 592: outf = popen(cmdbuf, "w"); ! 593: if (!outf) ! 594: outf = stdout; ! 595: else ! 596: setbuf(outf, NULL); ! 597: } ! 598: else ! 599: outf = stdout; ! 600: ! 601: if (seensubj) ! 602: putc('\n', outf); ! 603: ! 604: while (fgets(inbuf, sizeof inbuf, newmsg)) { ! 605: fputs(inbuf, outf); ! 606: if (ferror(outf)) { ! 607: clearerr(outf); ! 608: break; ! 609: } ! 610: } ! 611: ! 612: if (outf != stdout) { ! 613: pclose(outf); ! 614: signal(SIGPIPE, SIG_DFL); ! 615: signal(SIGQUIT, SIG_DFL); ! 616: } ! 617: else { ! 618: fflush(stdout); ! 619: } ! 620: ! 621: /* trick to force wait on output */ ! 622: stty(fileno(stdout), &otty); ! 623: } ! 624: ! 625: onintr() ! 626: { ! 627: signal(SIGINT, onintr); ! 628: if (mailing) ! 629: unlink(fname); ! 630: if (sending) { ! 631: unlink(fname); ! 632: puts("--Killed--"); ! 633: exit(1); ! 634: } ! 635: if (printing) { ! 636: putchar('\n'); ! 637: if (hdrs) ! 638: exit(0); ! 639: sep = "Interrupt"; ! 640: if (newmsg) ! 641: fseek(newmsg, 0L, 2); ! 642: intrpflg = YES; ! 643: } ! 644: } ! 645: ! 646: /* ! 647: * We have just gotten a susp. Suspend and prepare to resume. ! 648: */ ! 649: onsusp() ! 650: { ! 651: ! 652: signal(SIGTSTP, SIG_DFL); ! 653: sigsetmask(0); ! 654: kill(0, SIGTSTP); ! 655: signal(SIGTSTP, onsusp); ! 656: if (!mailing) ! 657: longjmp(tstpbuf); ! 658: } ! 659: ! 660: linecnt(f) ! 661: FILE *f; ! 662: { ! 663: off_t oldpos = ftell(f); ! 664: int l = 0; ! 665: char lbuf[BUFSIZ]; ! 666: ! 667: while (fgets(lbuf, sizeof lbuf, f)) ! 668: l++; ! 669: clearerr(f); ! 670: fseek(f, oldpos, 0); ! 671: return (l); ! 672: } ! 673: ! 674: next(buf) ! 675: char *buf; ! 676: { ! 677: int i; ! 678: sscanf(buf, "%d", &i); ! 679: sprintf(buf, "Goto %d", i); ! 680: return(--i); ! 681: } ! 682: ! 683: ask(prompt) ! 684: char *prompt; ! 685: { ! 686: char inch; ! 687: int n, cmsg; ! 688: off_t oldpos; ! 689: FILE *cpfrom, *cpto; ! 690: ! 691: printf("%s ", prompt); ! 692: fflush(stdout); ! 693: intrpflg = NO; ! 694: (void) fgets(inbuf, sizeof inbuf, stdin); ! 695: if ((n = strlen(inbuf)) > 0 && inbuf[n - 1] == '\n') ! 696: inbuf[n - 1] = '\0'; ! 697: if (intrpflg) ! 698: inbuf[0] = 'x'; ! 699: ! 700: /* ! 701: * Handle 'mail' and 'save' here. ! 702: */ ! 703: if ((inch = inbuf[0]) == 's' || inch == 'm') { ! 704: if (inbuf[1] == '-') ! 705: cmsg = prevmsg; ! 706: else if (isdigit(inbuf[1])) ! 707: cmsg = atoi(&inbuf[1]); ! 708: else ! 709: cmsg = msg; ! 710: sprintf(fname, "%s/%d", _PATH_MSGS, cmsg); ! 711: ! 712: oldpos = ftell(newmsg); ! 713: ! 714: cpfrom = fopen(fname, "r"); ! 715: if (!cpfrom) { ! 716: printf("Message %d not found\n", cmsg); ! 717: ask (prompt); ! 718: return; ! 719: } ! 720: ! 721: if (inch == 's') { ! 722: in = nxtfld(inbuf); ! 723: if (*in) { ! 724: for (n=0; in[n] > ' '; n++) { /* sizeof fname? */ ! 725: fname[n] = in[n]; ! 726: } ! 727: fname[n] = NULL; ! 728: } ! 729: else ! 730: strcpy(fname, "Messages"); ! 731: } ! 732: else { ! 733: strcpy(fname, _PATH_TMP); ! 734: mktemp(fname); ! 735: sprintf(cmdbuf, _PATH_MAIL, fname); ! 736: mailing = YES; ! 737: } ! 738: cpto = fopen(fname, "a"); ! 739: if (!cpto) { ! 740: perror(fname); ! 741: mailing = NO; ! 742: fseek(newmsg, oldpos, 0); ! 743: ask(prompt); ! 744: return; ! 745: } ! 746: ! 747: while (n = fread(inbuf, 1, sizeof inbuf, cpfrom)) ! 748: fwrite(inbuf, 1, n, cpto); ! 749: ! 750: fclose(cpfrom); ! 751: fclose(cpto); ! 752: fseek(newmsg, oldpos, 0); /* reposition current message */ ! 753: if (inch == 's') ! 754: printf("Message %d saved in \"%s\"\n", cmsg, fname); ! 755: else { ! 756: system(cmdbuf); ! 757: unlink(fname); ! 758: mailing = NO; ! 759: } ! 760: ask(prompt); ! 761: } ! 762: } ! 763: ! 764: gfrsub(infile) ! 765: FILE *infile; ! 766: { ! 767: off_t frompos; ! 768: ! 769: seensubj = seenfrom = NO; ! 770: local = YES; ! 771: subj[0] = from[0] = date[0] = NULL; ! 772: ! 773: /* ! 774: * Is this a normal message? ! 775: */ ! 776: if (fgets(inbuf, sizeof inbuf, infile)) { ! 777: if (strncmp(inbuf, "From", 4)==0) { ! 778: /* ! 779: * expected form starts with From ! 780: */ ! 781: seenfrom = YES; ! 782: frompos = ftell(infile); ! 783: ptr = from; ! 784: in = nxtfld(inbuf); ! 785: if (*in) while (*in && *in > ' ') { ! 786: if (*in == ':' || *in == '@' || *in == '!') ! 787: local = NO; ! 788: *ptr++ = *in++; ! 789: /* what about sizeof from ? */ ! 790: } ! 791: *ptr = NULL; ! 792: if (*(in = nxtfld(in))) ! 793: strncpy(date, in, sizeof date); ! 794: else { ! 795: date[0] = '\n'; ! 796: date[1] = NULL; ! 797: } ! 798: } ! 799: else { ! 800: /* ! 801: * not the expected form ! 802: */ ! 803: fseek(infile, 0L, 0); ! 804: return; ! 805: } ! 806: } ! 807: else ! 808: /* ! 809: * empty file ? ! 810: */ ! 811: return; ! 812: ! 813: /* ! 814: * look for Subject line until EOF or a blank line ! 815: */ ! 816: while (fgets(inbuf, sizeof inbuf, infile) ! 817: && !(blankline = (inbuf[0] == '\n'))) { ! 818: /* ! 819: * extract Subject line ! 820: */ ! 821: if (!seensubj && strncmp(inbuf, "Subj", 4)==0) { ! 822: seensubj = YES; ! 823: frompos = ftell(infile); ! 824: strncpy(subj, nxtfld(inbuf), sizeof subj); ! 825: } ! 826: } ! 827: if (!blankline) ! 828: /* ! 829: * ran into EOF ! 830: */ ! 831: fseek(infile, frompos, 0); ! 832: ! 833: if (!seensubj) ! 834: /* ! 835: * for possible use with Mail ! 836: */ ! 837: strncpy(subj, "(No Subject)\n", sizeof subj); ! 838: } ! 839: ! 840: char * ! 841: nxtfld(s) ! 842: char *s; ! 843: { ! 844: if (*s) while (*s && *s > ' ') s++; /* skip over this field */ ! 845: if (*s) while (*s && *s <= ' ') s++; /* find start of next field */ ! 846: return (s); ! 847: }
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