cmd2.c revision 1.3
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 1.3 1994/06/29 05:09:09 deraadt 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 undelete(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 } 532
Indexes created Fri Sep 26 20:09:58 GMT 2025