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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 #if 0 32 static char sccsid[] = "@(#)cmd2.c 8.1 (Berkeley) 6/6/93"; 33 #endif 34 #endif /* not lint */ 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include "rcv.h" 39 #include <sys/wait.h> 40 #include "extern.h" 41 42 /* 43 * Mail -- a mail program 44 * 45 * More user commands. 46 */ 47 48 extern int wait_status; 49 50 /* 51 * If any arguments were given, go to the next applicable argument 52 * following dot, otherwise, go to the next applicable message. 53 * If given as first command with no arguments, print first message. 54 */ 55 int 56 next(void *v) 57 { 58 struct message *mp; 59 int *msgvec = v; 60 int *ip, *ip2, list[2], mdot; 61 62 if (*msgvec != 0) { 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 != 0; ip++) 78 if (*ip > mdot) 79 break; 80 if (*ip == 0) 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 != 0) 90 ip2++; 91 if (*ip2 == 0) 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] = 0; 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(void *v) 135 { 136 char *str = v; 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(void *v) 146 { 147 char *str = v; 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(char str[], int mark, const char *cmd, struct ignoretab *ignore) 158 { 159 struct message *mp; 160 char *file; 161 const char *disp; 162 int f, *msgvec, *ip; 163 FILE *obuf; 164 165 msgvec = (int *)salloc((msgCount + 2) * sizeof(*msgvec)); 166 if ((file = snarf(str, &f)) == NULL) 167 return (1); 168 if (!f) { 169 *msgvec = first(0, MMNORM); 170 if (*msgvec == 0) { 171 printf("No messages to %s.\n", cmd); 172 return (1); 173 } 174 msgvec[1] = 0; 175 } 176 if (f && getmsglist(str, msgvec, 0) < 0) 177 return (1); 178 if ((file = expand(file)) == NULL) 179 return (1); 180 printf("\"%s\" ", file); 181 (void)fflush(stdout); 182 if (access(file, 0) >= 0) 183 disp = "[Appended]"; 184 else 185 disp = "[New file]"; 186 if ((obuf = Fopen(file, "a")) == NULL) { 187 warn((char *)NULL); 188 return (1); 189 } 190 for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) { 191 mp = &message[*ip - 1]; 192 touch(mp); 193 if (sendmessage(mp, obuf, ignore, NULL) < 0) { 194 warnx("%s", file); 195 (void)Fclose(obuf); 196 return (1); 197 } 198 if (mark) 199 mp->m_flag |= MSAVED; 200 } 201 (void)fflush(obuf); 202 if (ferror(obuf)) 203 warn("%s", file); 204 (void)Fclose(obuf); 205 printf("%s\n", disp); 206 return (0); 207 } 208 209 /* 210 * Write the indicated messages at the end of the passed 211 * file name, minus header and trailing blank line. 212 */ 213 int 214 swrite(void *v) 215 { 216 char *str = v; 217 218 return (save1(str, 1, "write", ignoreall)); 219 } 220 221 /* 222 * Snarf the file from the end of the command line and 223 * return a pointer to it. If there is no file attached, 224 * just return NULL. Put a null in front of the file 225 * name so that the message list processing won't see it, 226 * unless the file name is the only thing on the line, in 227 * which case, return 0 in the reference flag variable. 228 */ 229 230 char * 231 snarf(char *linebuf, int *flag) 232 { 233 char *cp; 234 235 *flag = 1; 236 cp = strlen(linebuf) + linebuf - 1; 237 238 /* 239 * Strip away trailing blanks. 240 */ 241 242 while (cp > linebuf && isspace((unsigned char)*cp)) 243 cp--; 244 *++cp = '\0'; 245 246 /* 247 * Now search for the beginning of the file name. 248 */ 249 250 while (cp > linebuf && !isspace((unsigned char)*cp)) 251 cp--; 252 if (*cp == '\0') { 253 printf("No file specified.\n"); 254 return (NULL); 255 } 256 if (isspace((unsigned char)*cp)) 257 *cp++ = '\0'; 258 else 259 *flag = 0; 260 return (cp); 261 } 262 263 /* 264 * Delete messages. 265 */ 266 int 267 deletecmd(void *v) 268 { 269 int *msgvec = v; 270 271 delm(msgvec); 272 return (0); 273 } 274 275 /* 276 * Delete messages, then type the new dot. 277 */ 278 int 279 deltype(void *v) 280 { 281 int *msgvec = v; 282 int list[2]; 283 int lastdot; 284 285 lastdot = dot - &message[0] + 1; 286 if (delm(msgvec) >= 0) { 287 list[0] = dot - &message[0] + 1; 288 if (list[0] > lastdot) { 289 touch(dot); 290 list[1] = 0; 291 return (type(list)); 292 } 293 printf("At EOF\n"); 294 } else 295 printf("No more messages\n"); 296 return (0); 297 } 298 299 /* 300 * Delete the indicated messages. 301 * Set dot to some nice place afterwards. 302 * Internal interface. 303 */ 304 int 305 delm(int *msgvec) 306 { 307 struct message *mp; 308 int *ip, last; 309 310 last = 0; 311 for (ip = msgvec; *ip != 0; ip++) { 312 mp = &message[*ip - 1]; 313 touch(mp); 314 mp->m_flag |= MDELETED|MTOUCH; 315 mp->m_flag &= ~(MPRESERVE|MSAVED|MBOX); 316 last = *ip; 317 } 318 if (last != 0) { 319 dot = &message[last-1]; 320 last = first(0, MDELETED); 321 if (last != 0) { 322 dot = &message[last-1]; 323 return (0); 324 } 325 else { 326 dot = &message[0]; 327 return (-1); 328 } 329 } 330 331 /* 332 * Following can't happen -- it keeps lint happy 333 */ 334 335 return (-1); 336 } 337 338 /* 339 * Undelete the indicated messages. 340 */ 341 int 342 undeletecmd(void *v) 343 { 344 int *msgvec = v; 345 int *ip; 346 struct message *mp; 347 348 for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) { 349 mp = &message[*ip - 1]; 350 touch(mp); 351 dot = mp; 352 mp->m_flag &= ~MDELETED; 353 } 354 return (0); 355 } 356 357 /* 358 * Interactively dump core on "core" 359 */ 360 int 361 core(void) 362 { 363 int pid; 364 365 switch (pid = fork()) { 366 case -1: 367 warn("fork"); 368 return (1); 369 case 0: 370 abort(); 371 _exit(1); 372 } 373 printf("Okie dokie"); 374 (void)fflush(stdout); 375 wait_child(pid); 376 if (WIFSIGNALED(wait_status) && WCOREDUMP(wait_status)) 377 printf(" -- Core dumped.\n"); 378 else 379 printf(" -- Can't dump core.\n"); 380 return (0); 381 } 382 383 /* 384 * Clobber as many bytes of stack as the user requests. 385 */ 386 int 387 clobber(char **argv) 388 { 389 int times; 390 391 if (argv[0] == 0) 392 times = 1; 393 else 394 times = (atoi(argv[0]) + 511) / 512; 395 clob1(times); 396 return (0); 397 } 398 399 /* 400 * Clobber the stack. 401 */ 402 void 403 clob1(int n) 404 { 405 char buf[512]; 406 char *cp; 407 408 if (n <= 0) 409 return; 410 for (cp = buf; cp < &buf[512]; *cp++ = 0xFF) 411 ; 412 clob1(n - 1); 413 } 414 415 /* 416 * Add the given header fields to the retained list. 417 * If no arguments, print the current list of retained fields. 418 */ 419 int 420 retfield(void *v) 421 { 422 char **list = v; 423 424 return (ignore1(list, ignore + 1, "retained")); 425 } 426 427 /* 428 * Add the given header fields to the ignored list. 429 * If no arguments, print the current list of ignored fields. 430 */ 431 int 432 igfield(void *v) 433 { 434 char **list = v; 435 436 return (ignore1(list, ignore, "ignored")); 437 } 438 439 int 440 saveretfield(void *v) 441 { 442 char **list = v; 443 444 return (ignore1(list, saveignore + 1, "retained")); 445 } 446 447 int 448 saveigfield(void *v) 449 { 450 char **list = v; 451 452 return (ignore1(list, saveignore, "ignored")); 453 } 454 455 int 456 ignore1(char **list, struct ignoretab *tab, const char *which) 457 { 458 char field[LINESIZE]; 459 char **ap; 460 struct ignore *igp; 461 int h; 462 463 if (*list == NULL) 464 return (igshow(tab, which)); 465 for (ap = list; *ap != 0; ap++) { 466 istrncpy(field, *ap, sizeof(field)); 467 if (member(field, tab)) 468 continue; 469 h = hash(field); 470 igp = calloc(1, sizeof(struct ignore)); 471 igp->i_field = calloc((unsigned)strlen(field) + 1, 472 sizeof(char)); 473 strcpy(igp->i_field, field); 474 igp->i_link = tab->i_head[h]; 475 tab->i_head[h] = igp; 476 tab->i_count++; 477 } 478 return (0); 479 } 480 481 /* 482 * Print out all currently retained fields. 483 */ 484 int 485 igshow(struct ignoretab *tab, const char *which) 486 { 487 int h; 488 struct ignore *igp; 489 char **ap, **ring; 490 491 if (tab->i_count == 0) { 492 printf("No fields currently being %s.\n", which); 493 return (0); 494 } 495 ring = (char **)salloc((tab->i_count + 1) * sizeof(char *)); 496 ap = ring; 497 for (h = 0; h < HSHSIZE; h++) 498 for (igp = tab->i_head[h]; igp != NULL; igp = igp->i_link) 499 *ap++ = igp->i_field; 500 *ap = 0; 501 qsort(ring, tab->i_count, sizeof(char *), igcomp); 502 for (ap = ring; *ap != 0; ap++) 503 printf("%s\n", *ap); 504 return (0); 505 } 506 507 /* 508 * Compare two names for sorting ignored field list. 509 */ 510 int 511 igcomp(const void *l, const void *r) 512 { 513 514 return (strcmp(*(const char **)l, *(const char **)r)); 515 } 516