Annotation of src/usr.bin/mail/cmd2.c, Revision 1.1
1.1 ! deraadt 1: /*
! 2: * Copyright (c) 1980, 1993
! 3: * The Regents of the University of California. All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. All advertising materials mentioning features or use of this software
! 14: * must display the following acknowledgement:
! 15: * This product includes software developed by the University of
! 16: * California, Berkeley and its contributors.
! 17: * 4. Neither the name of the University nor the names of its contributors
! 18: * may be used to endorse or promote products derived from this software
! 19: * without specific prior written permission.
! 20: *
! 21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 31: * SUCH DAMAGE.
! 32: */
! 33:
! 34: #ifndef lint
! 35: static char sccsid[] = "from: @(#)cmd2.c 8.1 (Berkeley) 6/6/93";
! 36: static char rcsid[] = "$Id: cmd2.c,v 1.4 1994/12/28 13:16:12 mycroft Exp $";
! 37: #endif /* not lint */
! 38:
! 39: #include "rcv.h"
! 40: #include <sys/wait.h>
! 41: #include "extern.h"
! 42:
! 43: /*
! 44: * Mail -- a mail program
! 45: *
! 46: * More user commands.
! 47: */
! 48:
! 49: /*
! 50: * If any arguments were given, go to the next applicable argument
! 51: * following dot, otherwise, go to the next applicable message.
! 52: * If given as first command with no arguments, print first message.
! 53: */
! 54: int
! 55: next(msgvec)
! 56: int *msgvec;
! 57: {
! 58: register struct message *mp;
! 59: register int *ip, *ip2;
! 60: int list[2], mdot;
! 61:
! 62: if (*msgvec != NULL) {
! 63:
! 64: /*
! 65: * If some messages were supplied, find the
! 66: * first applicable one following dot using
! 67: * wrap around.
! 68: */
! 69:
! 70: mdot = dot - &message[0] + 1;
! 71:
! 72: /*
! 73: * Find the first message in the supplied
! 74: * message list which follows dot.
! 75: */
! 76:
! 77: for (ip = msgvec; *ip != NULL; ip++)
! 78: if (*ip > mdot)
! 79: break;
! 80: if (*ip == NULL)
! 81: ip = msgvec;
! 82: ip2 = ip;
! 83: do {
! 84: mp = &message[*ip2 - 1];
! 85: if ((mp->m_flag & MDELETED) == 0) {
! 86: dot = mp;
! 87: goto hitit;
! 88: }
! 89: if (*ip2 != NULL)
! 90: ip2++;
! 91: if (*ip2 == NULL)
! 92: ip2 = msgvec;
! 93: } while (ip2 != ip);
! 94: printf("No messages applicable\n");
! 95: return(1);
! 96: }
! 97:
! 98: /*
! 99: * If this is the first command, select message 1.
! 100: * Note that this must exist for us to get here at all.
! 101: */
! 102:
! 103: if (!sawcom)
! 104: goto hitit;
! 105:
! 106: /*
! 107: * Just find the next good message after dot, no
! 108: * wraparound.
! 109: */
! 110:
! 111: for (mp = dot+1; mp < &message[msgCount]; mp++)
! 112: if ((mp->m_flag & (MDELETED|MSAVED)) == 0)
! 113: break;
! 114: if (mp >= &message[msgCount]) {
! 115: printf("At EOF\n");
! 116: return(0);
! 117: }
! 118: dot = mp;
! 119: hitit:
! 120: /*
! 121: * Print dot.
! 122: */
! 123:
! 124: list[0] = dot - &message[0] + 1;
! 125: list[1] = NULL;
! 126: return(type(list));
! 127: }
! 128:
! 129: /*
! 130: * Save a message in a file. Mark the message as saved
! 131: * so we can discard when the user quits.
! 132: */
! 133: int
! 134: save(str)
! 135: char str[];
! 136: {
! 137:
! 138: return save1(str, 1, "save", saveignore);
! 139: }
! 140:
! 141: /*
! 142: * Copy a message to a file without affected its saved-ness
! 143: */
! 144: int
! 145: copycmd(str)
! 146: char str[];
! 147: {
! 148:
! 149: return save1(str, 0, "copy", saveignore);
! 150: }
! 151:
! 152: /*
! 153: * Save/copy the indicated messages at the end of the passed file name.
! 154: * If mark is true, mark the message "saved."
! 155: */
! 156: int
! 157: save1(str, mark, cmd, ignore)
! 158: char str[];
! 159: int mark;
! 160: char *cmd;
! 161: struct ignoretab *ignore;
! 162: {
! 163: register int *ip;
! 164: register struct message *mp;
! 165: char *file, *disp;
! 166: int f, *msgvec;
! 167: FILE *obuf;
! 168:
! 169: msgvec = (int *) salloc((msgCount + 2) * sizeof *msgvec);
! 170: if ((file = snarf(str, &f)) == NOSTR)
! 171: return(1);
! 172: if (!f) {
! 173: *msgvec = first(0, MMNORM);
! 174: if (*msgvec == NULL) {
! 175: printf("No messages to %s.\n", cmd);
! 176: return(1);
! 177: }
! 178: msgvec[1] = NULL;
! 179: }
! 180: if (f && getmsglist(str, msgvec, 0) < 0)
! 181: return(1);
! 182: if ((file = expand(file)) == NOSTR)
! 183: return(1);
! 184: printf("\"%s\" ", file);
! 185: fflush(stdout);
! 186: if (access(file, 0) >= 0)
! 187: disp = "[Appended]";
! 188: else
! 189: disp = "[New file]";
! 190: if ((obuf = Fopen(file, "a")) == NULL) {
! 191: perror(NOSTR);
! 192: return(1);
! 193: }
! 194: for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
! 195: mp = &message[*ip - 1];
! 196: touch(mp);
! 197: if (send(mp, obuf, ignore, NOSTR) < 0) {
! 198: perror(file);
! 199: Fclose(obuf);
! 200: return(1);
! 201: }
! 202: if (mark)
! 203: mp->m_flag |= MSAVED;
! 204: }
! 205: fflush(obuf);
! 206: if (ferror(obuf))
! 207: perror(file);
! 208: Fclose(obuf);
! 209: printf("%s\n", disp);
! 210: return(0);
! 211: }
! 212:
! 213: /*
! 214: * Write the indicated messages at the end of the passed
! 215: * file name, minus header and trailing blank line.
! 216: */
! 217: int
! 218: swrite(str)
! 219: char str[];
! 220: {
! 221:
! 222: return save1(str, 1, "write", ignoreall);
! 223: }
! 224:
! 225: /*
! 226: * Snarf the file from the end of the command line and
! 227: * return a pointer to it. If there is no file attached,
! 228: * just return NOSTR. Put a null in front of the file
! 229: * name so that the message list processing won't see it,
! 230: * unless the file name is the only thing on the line, in
! 231: * which case, return 0 in the reference flag variable.
! 232: */
! 233:
! 234: char *
! 235: snarf(linebuf, flag)
! 236: char linebuf[];
! 237: int *flag;
! 238: {
! 239: register char *cp;
! 240:
! 241: *flag = 1;
! 242: cp = strlen(linebuf) + linebuf - 1;
! 243:
! 244: /*
! 245: * Strip away trailing blanks.
! 246: */
! 247:
! 248: while (cp > linebuf && isspace(*cp))
! 249: cp--;
! 250: *++cp = 0;
! 251:
! 252: /*
! 253: * Now search for the beginning of the file name.
! 254: */
! 255:
! 256: while (cp > linebuf && !isspace(*cp))
! 257: cp--;
! 258: if (*cp == '\0') {
! 259: printf("No file specified.\n");
! 260: return(NOSTR);
! 261: }
! 262: if (isspace(*cp))
! 263: *cp++ = 0;
! 264: else
! 265: *flag = 0;
! 266: return(cp);
! 267: }
! 268:
! 269: /*
! 270: * Delete messages.
! 271: */
! 272: int
! 273: delete(msgvec)
! 274: int msgvec[];
! 275: {
! 276: delm(msgvec);
! 277: return 0;
! 278: }
! 279:
! 280: /*
! 281: * Delete messages, then type the new dot.
! 282: */
! 283: int
! 284: deltype(msgvec)
! 285: int msgvec[];
! 286: {
! 287: int list[2];
! 288: int lastdot;
! 289:
! 290: lastdot = dot - &message[0] + 1;
! 291: if (delm(msgvec) >= 0) {
! 292: list[0] = dot - &message[0] + 1;
! 293: if (list[0] > lastdot) {
! 294: touch(dot);
! 295: list[1] = NULL;
! 296: return(type(list));
! 297: }
! 298: printf("At EOF\n");
! 299: } else
! 300: printf("No more messages\n");
! 301: return(0);
! 302: }
! 303:
! 304: /*
! 305: * Delete the indicated messages.
! 306: * Set dot to some nice place afterwards.
! 307: * Internal interface.
! 308: */
! 309: int
! 310: delm(msgvec)
! 311: int *msgvec;
! 312: {
! 313: register struct message *mp;
! 314: register *ip;
! 315: int last;
! 316:
! 317: last = NULL;
! 318: for (ip = msgvec; *ip != NULL; ip++) {
! 319: mp = &message[*ip - 1];
! 320: touch(mp);
! 321: mp->m_flag |= MDELETED|MTOUCH;
! 322: mp->m_flag &= ~(MPRESERVE|MSAVED|MBOX);
! 323: last = *ip;
! 324: }
! 325: if (last != NULL) {
! 326: dot = &message[last-1];
! 327: last = first(0, MDELETED);
! 328: if (last != NULL) {
! 329: dot = &message[last-1];
! 330: return(0);
! 331: }
! 332: else {
! 333: dot = &message[0];
! 334: return(-1);
! 335: }
! 336: }
! 337:
! 338: /*
! 339: * Following can't happen -- it keeps lint happy
! 340: */
! 341:
! 342: return(-1);
! 343: }
! 344:
! 345: /*
! 346: * Undelete the indicated messages.
! 347: */
! 348: int
! 349: undeletecmd(msgvec)
! 350: int *msgvec;
! 351: {
! 352: register struct message *mp;
! 353: register *ip;
! 354:
! 355: for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
! 356: mp = &message[*ip - 1];
! 357: touch(mp);
! 358: dot = mp;
! 359: mp->m_flag &= ~MDELETED;
! 360: }
! 361: return 0;
! 362: }
! 363:
! 364: /*
! 365: * Interactively dump core on "core"
! 366: */
! 367: int
! 368: core()
! 369: {
! 370: int pid;
! 371: extern union wait wait_status;
! 372:
! 373: switch (pid = vfork()) {
! 374: case -1:
! 375: perror("fork");
! 376: return(1);
! 377: case 0:
! 378: abort();
! 379: _exit(1);
! 380: }
! 381: printf("Okie dokie");
! 382: fflush(stdout);
! 383: wait_child(pid);
! 384: if (wait_status.w_coredump)
! 385: printf(" -- Core dumped.\n");
! 386: else
! 387: printf(" -- Can't dump core.\n");
! 388: return 0;
! 389: }
! 390:
! 391: /*
! 392: * Clobber as many bytes of stack as the user requests.
! 393: */
! 394: int
! 395: clobber(argv)
! 396: char **argv;
! 397: {
! 398: register int times;
! 399:
! 400: if (argv[0] == 0)
! 401: times = 1;
! 402: else
! 403: times = (atoi(argv[0]) + 511) / 512;
! 404: clob1(times);
! 405: return 0;
! 406: }
! 407:
! 408: /*
! 409: * Clobber the stack.
! 410: */
! 411: void
! 412: clob1(n)
! 413: int n;
! 414: {
! 415: char buf[512];
! 416: register char *cp;
! 417:
! 418: if (n <= 0)
! 419: return;
! 420: for (cp = buf; cp < &buf[512]; *cp++ = 0xFF)
! 421: ;
! 422: clob1(n - 1);
! 423: }
! 424:
! 425: /*
! 426: * Add the given header fields to the retained list.
! 427: * If no arguments, print the current list of retained fields.
! 428: */
! 429: int
! 430: retfield(list)
! 431: char *list[];
! 432: {
! 433:
! 434: return ignore1(list, ignore + 1, "retained");
! 435: }
! 436:
! 437: /*
! 438: * Add the given header fields to the ignored list.
! 439: * If no arguments, print the current list of ignored fields.
! 440: */
! 441: int
! 442: igfield(list)
! 443: char *list[];
! 444: {
! 445:
! 446: return ignore1(list, ignore, "ignored");
! 447: }
! 448:
! 449: int
! 450: saveretfield(list)
! 451: char *list[];
! 452: {
! 453:
! 454: return ignore1(list, saveignore + 1, "retained");
! 455: }
! 456:
! 457: int
! 458: saveigfield(list)
! 459: char *list[];
! 460: {
! 461:
! 462: return ignore1(list, saveignore, "ignored");
! 463: }
! 464:
! 465: int
! 466: ignore1(list, tab, which)
! 467: char *list[];
! 468: struct ignoretab *tab;
! 469: char *which;
! 470: {
! 471: char field[BUFSIZ];
! 472: register int h;
! 473: register struct ignore *igp;
! 474: char **ap;
! 475:
! 476: if (*list == NOSTR)
! 477: return igshow(tab, which);
! 478: for (ap = list; *ap != 0; ap++) {
! 479: istrcpy(field, *ap);
! 480: if (member(field, tab))
! 481: continue;
! 482: h = hash(field);
! 483: igp = (struct ignore *) calloc(1, sizeof (struct ignore));
! 484: igp->i_field = calloc((unsigned) strlen(field) + 1,
! 485: sizeof (char));
! 486: strcpy(igp->i_field, field);
! 487: igp->i_link = tab->i_head[h];
! 488: tab->i_head[h] = igp;
! 489: tab->i_count++;
! 490: }
! 491: return 0;
! 492: }
! 493:
! 494: /*
! 495: * Print out all currently retained fields.
! 496: */
! 497: int
! 498: igshow(tab, which)
! 499: struct ignoretab *tab;
! 500: char *which;
! 501: {
! 502: register int h;
! 503: struct ignore *igp;
! 504: char **ap, **ring;
! 505: int igcomp();
! 506:
! 507: if (tab->i_count == 0) {
! 508: printf("No fields currently being %s.\n", which);
! 509: return 0;
! 510: }
! 511: ring = (char **) salloc((tab->i_count + 1) * sizeof (char *));
! 512: ap = ring;
! 513: for (h = 0; h < HSHSIZE; h++)
! 514: for (igp = tab->i_head[h]; igp != 0; igp = igp->i_link)
! 515: *ap++ = igp->i_field;
! 516: *ap = 0;
! 517: qsort(ring, tab->i_count, sizeof (char *), igcomp);
! 518: for (ap = ring; *ap != 0; ap++)
! 519: printf("%s\n", *ap);
! 520: return 0;
! 521: }
! 522:
! 523: /*
! 524: * Compare two names for sorting ignored field list.
! 525: */
! 526: int
! 527: igcomp(l, r)
! 528: const void *l, *r;
! 529: {
! 530: return (strcmp(*(char **)l, *(char **)r));
! 531: }
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