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 * @(#)cmd2.c 8.1 (Berkeley) 6/6/93 34 * $FreeBSD: src/usr.bin/mail/cmd2.c,v 1.5.6.3 2003/01/06 05:46:03 mikeh Exp $ 35 * $DragonFly: src/usr.bin/mail/cmd2.c,v 1.3 2003/10/04 20:36:48 hmp Exp $ 36 */ 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(int *msgvec) 57 { 58 struct message *mp; 59 int *ip, *ip2, list[2], mdot; 60 61 if (*msgvec != 0) { 62 63 /* 64 * If some messages were supplied, find the 65 * first applicable one following dot using 66 * wrap around. 67 */ 68 69 mdot = dot - &message[0] + 1; 70 71 /* 72 * Find the first message in the supplied 73 * message list which follows dot. 74 */ 75 76 for (ip = msgvec; *ip != 0; ip++) 77 if (*ip > mdot) 78 break; 79 if (*ip == 0) 80 ip = msgvec; 81 ip2 = ip; 82 do { 83 mp = &message[*ip2 - 1]; 84 if ((mp->m_flag & MDELETED) == 0) { 85 dot = mp; 86 goto hitit; 87 } 88 if (*ip2 != 0) 89 ip2++; 90 if (*ip2 == 0) 91 ip2 = msgvec; 92 } while (ip2 != ip); 93 printf("No messages applicable\n"); 94 return (1); 95 } 96 97 /* 98 * If this is the first command, select message 1. 99 * Note that this must exist for us to get here at all. 100 */ 101 102 if (!sawcom) 103 goto hitit; 104 105 /* 106 * Just find the next good message after dot, no 107 * wraparound. 108 */ 109 110 for (mp = dot+1; mp < &message[msgCount]; mp++) 111 if ((mp->m_flag & (MDELETED|MSAVED)) == 0) 112 break; 113 if (mp >= &message[msgCount]) { 114 printf("At EOF\n"); 115 return (0); 116 } 117 dot = mp; 118 hitit: 119 /* 120 * Print dot. 121 */ 122 123 list[0] = dot - &message[0] + 1; 124 list[1] = 0; 125 return (type(list)); 126 } 127 128 /* 129 * Save a message in a file. Mark the message as saved 130 * so we can discard when the user quits. 131 */ 132 int 133 save(char *str) 134 { 135 136 return (save1(str, 1, "save", saveignore)); 137 } 138 139 /* 140 * Copy a message to a file without affected its saved-ness 141 */ 142 int 143 copycmd(char *str) 144 { 145 146 return (save1(str, 0, "copy", saveignore)); 147 } 148 149 /* 150 * Save/copy the indicated messages at the end of the passed file name. 151 * If mark is true, mark the message "saved." 152 */ 153 int 154 save1(char *str, int mark, const char *cmd, struct ignoretab *ignore) 155 { 156 struct message *mp; 157 char *file; 158 const char *disp; 159 int f, *msgvec, *ip; 160 FILE *obuf; 161 162 msgvec = (int *)salloc((msgCount + 2) * sizeof(*msgvec)); 163 if ((file = snarf(str, &f)) == NULL) 164 return (1); 165 if (!f) { 166 *msgvec = first(0, MMNORM); 167 if (*msgvec == 0) { 168 printf("No messages to %s.\n", cmd); 169 return (1); 170 } 171 msgvec[1] = 0; 172 } 173 if (f && getmsglist(str, msgvec, 0) < 0) 174 return (1); 175 if ((file = expand(file)) == NULL) 176 return (1); 177 printf("\"%s\" ", file); 178 (void)fflush(stdout); 179 if (access(file, 0) >= 0) 180 disp = "[Appended]"; 181 else 182 disp = "[New file]"; 183 if ((obuf = Fopen(file, "a")) == NULL) { 184 warn((char *)NULL); 185 return (1); 186 } 187 for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) { 188 mp = &message[*ip - 1]; 189 touch(mp); 190 if (sendmessage(mp, obuf, ignore, NULL) < 0) { 191 warnx("%s", file); 192 (void)Fclose(obuf); 193 return (1); 194 } 195 if (mark) 196 mp->m_flag |= MSAVED; 197 } 198 (void)fflush(obuf); 199 if (ferror(obuf)) 200 warn("%s", file); 201 (void)Fclose(obuf); 202 printf("%s\n", disp); 203 return (0); 204 } 205 206 /* 207 * Write the indicated messages at the end of the passed 208 * file name, minus header and trailing blank line. 209 */ 210 int 211 swrite(char *str) 212 { 213 214 return (save1(str, 1, "write", ignoreall)); 215 } 216 217 /* 218 * Snarf the file from the end of the command line and 219 * return a pointer to it. If there is no file attached, 220 * just return NULL. Put a null in front of the file 221 * name so that the message list processing won't see it, 222 * unless the file name is the only thing on the line, in 223 * which case, return 0 in the reference flag variable. 224 */ 225 226 char * 227 snarf(char *linebuf, int *flag) 228 { 229 char *cp; 230 231 *flag = 1; 232 cp = strlen(linebuf) + linebuf - 1; 233 234 /* 235 * Strip away trailing blanks. 236 */ 237 238 while (cp > linebuf && isspace((unsigned char)*cp)) 239 cp--; 240 *++cp = '\0'; 241 242 /* 243 * Now search for the beginning of the file name. 244 */ 245 246 while (cp > linebuf && !isspace((unsigned char)*cp)) 247 cp--; 248 if (*cp == '\0') { 249 printf("No file specified.\n"); 250 return (NULL); 251 } 252 if (isspace((unsigned char)*cp)) 253 *cp++ = '\0'; 254 else 255 *flag = 0; 256 return (cp); 257 } 258 259 /* 260 * Delete messages. 261 */ 262 int 263 delete(int *msgvec) 264 { 265 266 delm(msgvec); 267 return (0); 268 } 269 270 /* 271 * Delete messages, then type the new dot. 272 */ 273 int 274 deltype(int *msgvec) 275 { 276 int list[2]; 277 int lastdot; 278 279 lastdot = dot - &message[0] + 1; 280 if (delm(msgvec) >= 0) { 281 list[0] = dot - &message[0] + 1; 282 if (list[0] > lastdot) { 283 touch(dot); 284 list[1] = 0; 285 return (type(list)); 286 } 287 printf("At EOF\n"); 288 } else 289 printf("No more messages\n"); 290 return (0); 291 } 292 293 /* 294 * Delete the indicated messages. 295 * Set dot to some nice place afterwards. 296 * Internal interface. 297 */ 298 int 299 delm(int *msgvec) 300 { 301 struct message *mp; 302 int *ip, last; 303 304 last = 0; 305 for (ip = msgvec; *ip != 0; ip++) { 306 mp = &message[*ip - 1]; 307 touch(mp); 308 mp->m_flag |= MDELETED|MTOUCH; 309 mp->m_flag &= ~(MPRESERVE|MSAVED|MBOX); 310 last = *ip; 311 } 312 if (last != 0) { 313 dot = &message[last-1]; 314 last = first(0, MDELETED); 315 if (last != 0) { 316 dot = &message[last-1]; 317 return (0); 318 } 319 else { 320 dot = &message[0]; 321 return (-1); 322 } 323 } 324 325 /* 326 * Following can't happen -- it keeps lint happy 327 */ 328 329 return (-1); 330 } 331 332 /* 333 * Undelete the indicated messages. 334 */ 335 int 336 undelete_messages(int *msgvec) 337 { 338 struct message *mp; 339 int *ip; 340 341 for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) { 342 mp = &message[*ip - 1]; 343 touch(mp); 344 dot = mp; 345 mp->m_flag &= ~MDELETED; 346 } 347 return (0); 348 } 349 350 /* 351 * Interactively dump core on "core" 352 */ 353 int 354 core(void) 355 { 356 int pid; 357 358 switch (pid = fork()) { 359 case -1: 360 warn("fork"); 361 return (1); 362 case 0: 363 abort(); 364 _exit(1); 365 } 366 printf("Okie dokie"); 367 (void)fflush(stdout); 368 wait_child(pid); 369 if (WIFSIGNALED(wait_status) && WCOREDUMP(wait_status)) 370 printf(" -- Core dumped.\n"); 371 else 372 printf(" -- Can't dump core.\n"); 373 return (0); 374 } 375 376 /* 377 * Clobber as many bytes of stack as the user requests. 378 */ 379 int 380 clobber(char **argv) 381 { 382 int times; 383 384 if (argv[0] == 0) 385 times = 1; 386 else 387 times = (atoi(argv[0]) + 511) / 512; 388 clob1(times); 389 return (0); 390 } 391 392 /* 393 * Clobber the stack. 394 */ 395 void 396 clob1(int n) 397 { 398 char buf[512]; 399 char *cp; 400 401 if (n <= 0) 402 return; 403 for (cp = buf; cp < &buf[512]; *cp++ = 0xFF) 404 ; 405 clob1(n - 1); 406 } 407 408 /* 409 * Add the given header fields to the retained list. 410 * If no arguments, print the current list of retained fields. 411 */ 412 int 413 retfield(char **list) 414 { 415 416 return (ignore1(list, ignore + 1, "retained")); 417 } 418 419 /* 420 * Add the given header fields to the ignored list. 421 * If no arguments, print the current list of ignored fields. 422 */ 423 int 424 igfield(char **list) 425 { 426 427 return (ignore1(list, ignore, "ignored")); 428 } 429 430 int 431 saveretfield(char **list) 432 { 433 434 return (ignore1(list, saveignore + 1, "retained")); 435 } 436 437 int 438 saveigfield(char **list) 439 { 440 441 return (ignore1(list, saveignore, "ignored")); 442 } 443 444 int 445 ignore1(char **list, struct ignoretab *tab, const char *which) 446 { 447 char field[LINESIZE]; 448 int h; 449 struct ignore *igp; 450 char **ap; 451 452 if (*list == NULL) 453 return (igshow(tab, which)); 454 for (ap = list; *ap != 0; ap++) { 455 istrncpy(field, *ap, sizeof(field)); 456 if (member(field, tab)) 457 continue; 458 h = hash(field); 459 igp = calloc(1, sizeof(struct ignore)); 460 igp->i_field = calloc((unsigned)strlen(field) + 1, 461 sizeof(char)); 462 strcpy(igp->i_field, field); 463 igp->i_link = tab->i_head[h]; 464 tab->i_head[h] = igp; 465 tab->i_count++; 466 } 467 return (0); 468 } 469 470 /* 471 * Print out all currently retained fields. 472 */ 473 int 474 igshow(struct ignoretab *tab, const char *which) 475 { 476 int h; 477 struct ignore *igp; 478 char **ap, **ring; 479 480 if (tab->i_count == 0) { 481 printf("No fields currently being %s.\n", which); 482 return (0); 483 } 484 ring = (char **)salloc((tab->i_count + 1) * sizeof(char *)); 485 ap = ring; 486 for (h = 0; h < HSHSIZE; h++) 487 for (igp = tab->i_head[h]; igp != NULL; igp = igp->i_link) 488 *ap++ = igp->i_field; 489 *ap = 0; 490 qsort(ring, tab->i_count, sizeof(char *), igcomp); 491 for (ap = ring; *ap != 0; ap++) 492 printf("%s\n", *ap); 493 return (0); 494 } 495 496 /* 497 * Compare two names for sorting ignored field list. 498 */ 499 int 500 igcomp(const void *l, const void *r) 501 { 502 503 return (strcmp(*(const char **)l, *(const char **)r)); 504 } 505