| 1 | /* |
| 2 | * Copyright (c) 1980 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 the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, |
| 8 | * advertising materials, and other materials related to such |
| 9 | * distribution and use acknowledge that the software was developed |
| 10 | * by the University of California, Berkeley. The name of the |
| 11 | * University may not be used to endorse or promote products derived |
| 12 | * from this software without specific prior written permission. |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 16 | */ |
| 17 | |
| 18 | #ifndef lint |
| 19 | static char sccsid[] = "@(#)quit.c 5.13 (Berkeley) %G%"; |
| 20 | #endif /* not lint */ |
| 21 | |
| 22 | #include "rcv.h" |
| 23 | #include <sys/stat.h> |
| 24 | #include <sys/file.h> |
| 25 | |
| 26 | /* |
| 27 | * Rcv -- receive mail rationally. |
| 28 | * |
| 29 | * Termination processing. |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * The "quit" command. |
| 34 | */ |
| 35 | quitcmd() |
| 36 | { |
| 37 | /* |
| 38 | * If we are sourcing, then return 1 so execute() can handle it. |
| 39 | * Otherwise, return -1 to abort command loop. |
| 40 | */ |
| 41 | if (sourcing) |
| 42 | return 1; |
| 43 | return -1; |
| 44 | } |
| 45 | |
| 46 | /* |
| 47 | * Save all of the undetermined messages at the top of "mbox" |
| 48 | * Save all untouched messages back in the system mailbox. |
| 49 | * Remove the system mailbox, if none saved there. |
| 50 | */ |
| 51 | |
| 52 | quit() |
| 53 | { |
| 54 | int mcount, p, modify, autohold, anystat, holdbit, nohold; |
| 55 | FILE *ibuf, *obuf, *fbuf, *rbuf, *readstat, *abuf; |
| 56 | register struct message *mp; |
| 57 | register int c; |
| 58 | extern char tempQuit[], tempResid[]; |
| 59 | struct stat minfo; |
| 60 | char *mbox; |
| 61 | |
| 62 | /* |
| 63 | * If we are read only, we can't do anything, |
| 64 | * so just return quickly. |
| 65 | */ |
| 66 | if (readonly) |
| 67 | return; |
| 68 | /* |
| 69 | * If editing (not reading system mail box), then do the work |
| 70 | * in edstop() |
| 71 | */ |
| 72 | if (edit) { |
| 73 | edstop(); |
| 74 | return; |
| 75 | } |
| 76 | |
| 77 | /* |
| 78 | * See if there any messages to save in mbox. If no, we |
| 79 | * can save copying mbox to /tmp and back. |
| 80 | * |
| 81 | * Check also to see if any files need to be preserved. |
| 82 | * Delete all untouched messages to keep them out of mbox. |
| 83 | * If all the messages are to be preserved, just exit with |
| 84 | * a message. |
| 85 | */ |
| 86 | |
| 87 | fbuf = fopen(mailname, "r"); |
| 88 | if (fbuf == NULL) |
| 89 | goto newmail; |
| 90 | flock(fileno(fbuf), LOCK_EX); |
| 91 | rbuf = NULL; |
| 92 | if (fstat(fileno(fbuf), &minfo) >= 0 && minfo.st_size > mailsize) { |
| 93 | printf("New mail has arrived.\n"); |
| 94 | rbuf = fopen(tempResid, "w"); |
| 95 | if (rbuf == NULL || fbuf == NULL) |
| 96 | goto newmail; |
| 97 | #ifdef APPEND |
| 98 | fseek(fbuf, mailsize, 0); |
| 99 | while ((c = getc(fbuf)) != EOF) |
| 100 | (void) putc(c, rbuf); |
| 101 | #else |
| 102 | p = minfo.st_size - mailsize; |
| 103 | while (p-- > 0) { |
| 104 | c = getc(fbuf); |
| 105 | if (c == EOF) |
| 106 | goto newmail; |
| 107 | (void) putc(c, rbuf); |
| 108 | } |
| 109 | #endif |
| 110 | fclose(rbuf); |
| 111 | if ((rbuf = fopen(tempResid, "r")) == NULL) |
| 112 | goto newmail; |
| 113 | remove(tempResid); |
| 114 | } |
| 115 | |
| 116 | /* |
| 117 | * Adjust the message flags in each message. |
| 118 | */ |
| 119 | |
| 120 | anystat = 0; |
| 121 | autohold = value("hold") != NOSTR; |
| 122 | holdbit = autohold ? MPRESERVE : MBOX; |
| 123 | nohold = MBOX|MSAVED|MDELETED|MPRESERVE; |
| 124 | if (value("keepsave") != NOSTR) |
| 125 | nohold &= ~MSAVED; |
| 126 | for (mp = &message[0]; mp < &message[msgCount]; mp++) { |
| 127 | if (mp->m_flag & MNEW) { |
| 128 | mp->m_flag &= ~MNEW; |
| 129 | mp->m_flag |= MSTATUS; |
| 130 | } |
| 131 | if (mp->m_flag & MSTATUS) |
| 132 | anystat++; |
| 133 | if ((mp->m_flag & MTOUCH) == 0) |
| 134 | mp->m_flag |= MPRESERVE; |
| 135 | if ((mp->m_flag & nohold) == 0) |
| 136 | mp->m_flag |= holdbit; |
| 137 | } |
| 138 | modify = 0; |
| 139 | if (Tflag != NOSTR) { |
| 140 | if ((readstat = fopen(Tflag, "w")) == NULL) |
| 141 | Tflag = NOSTR; |
| 142 | } |
| 143 | for (c = 0, p = 0, mp = &message[0]; mp < &message[msgCount]; mp++) { |
| 144 | if (mp->m_flag & MBOX) |
| 145 | c++; |
| 146 | if (mp->m_flag & MPRESERVE) |
| 147 | p++; |
| 148 | if (mp->m_flag & MODIFY) |
| 149 | modify++; |
| 150 | if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) { |
| 151 | char *id; |
| 152 | |
| 153 | if ((id = hfield("article-id", mp)) != NOSTR) |
| 154 | fprintf(readstat, "%s\n", id); |
| 155 | } |
| 156 | } |
| 157 | if (Tflag != NOSTR) |
| 158 | fclose(readstat); |
| 159 | if (p == msgCount && !modify && !anystat) { |
| 160 | printf("Held %d message%s in %s\n", |
| 161 | p, p == 1 ? "" : "s", mailname); |
| 162 | fclose(fbuf); |
| 163 | return; |
| 164 | } |
| 165 | if (c == 0) { |
| 166 | if (p != 0) { |
| 167 | writeback(rbuf); |
| 168 | fclose(fbuf); |
| 169 | return; |
| 170 | } |
| 171 | goto cream; |
| 172 | } |
| 173 | |
| 174 | /* |
| 175 | * Create another temporary file and copy user's mbox file |
| 176 | * darin. If there is no mbox, copy nothing. |
| 177 | * If he has specified "append" don't copy his mailbox, |
| 178 | * just copy saveable entries at the end. |
| 179 | */ |
| 180 | |
| 181 | mbox = expand("&"); |
| 182 | mcount = c; |
| 183 | if (value("append") == NOSTR) { |
| 184 | if ((obuf = fopen(tempQuit, "w")) == NULL) { |
| 185 | perror(tempQuit); |
| 186 | fclose(fbuf); |
| 187 | return; |
| 188 | } |
| 189 | if ((ibuf = fopen(tempQuit, "r")) == NULL) { |
| 190 | perror(tempQuit); |
| 191 | remove(tempQuit); |
| 192 | fclose(obuf); |
| 193 | fclose(fbuf); |
| 194 | return; |
| 195 | } |
| 196 | remove(tempQuit); |
| 197 | if ((abuf = fopen(mbox, "r")) != NULL) { |
| 198 | while ((c = getc(abuf)) != EOF) |
| 199 | (void) putc(c, obuf); |
| 200 | fclose(abuf); |
| 201 | } |
| 202 | if (ferror(obuf)) { |
| 203 | perror(tempQuit); |
| 204 | fclose(ibuf); |
| 205 | fclose(obuf); |
| 206 | fclose(fbuf); |
| 207 | return; |
| 208 | } |
| 209 | fclose(obuf); |
| 210 | close(creat(mbox, 0600)); |
| 211 | if ((obuf = fopen(mbox, "r+")) == NULL) { |
| 212 | perror(mbox); |
| 213 | fclose(ibuf); |
| 214 | fclose(fbuf); |
| 215 | return; |
| 216 | } |
| 217 | } |
| 218 | if (value("append") != NOSTR) { |
| 219 | if ((obuf = fopen(mbox, "a")) == NULL) { |
| 220 | perror(mbox); |
| 221 | fclose(fbuf); |
| 222 | return; |
| 223 | } |
| 224 | fchmod(fileno(obuf), 0600); |
| 225 | } |
| 226 | for (mp = &message[0]; mp < &message[msgCount]; mp++) |
| 227 | if (mp->m_flag & MBOX) |
| 228 | if (send(mp, obuf, saveignore, NOSTR) < 0) { |
| 229 | perror(mbox); |
| 230 | fclose(ibuf); |
| 231 | fclose(obuf); |
| 232 | fclose(fbuf); |
| 233 | return; |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * Copy the user's old mbox contents back |
| 238 | * to the end of the stuff we just saved. |
| 239 | * If we are appending, this is unnecessary. |
| 240 | */ |
| 241 | |
| 242 | if (value("append") == NOSTR) { |
| 243 | rewind(ibuf); |
| 244 | c = getc(ibuf); |
| 245 | while (c != EOF) { |
| 246 | (void) putc(c, obuf); |
| 247 | if (ferror(obuf)) |
| 248 | break; |
| 249 | c = getc(ibuf); |
| 250 | } |
| 251 | fclose(ibuf); |
| 252 | fflush(obuf); |
| 253 | } |
| 254 | trunc(obuf); |
| 255 | if (ferror(obuf)) { |
| 256 | perror(mbox); |
| 257 | fclose(obuf); |
| 258 | fclose(fbuf); |
| 259 | return; |
| 260 | } |
| 261 | fclose(obuf); |
| 262 | if (mcount == 1) |
| 263 | printf("Saved 1 message in mbox\n"); |
| 264 | else |
| 265 | printf("Saved %d messages in mbox\n", mcount); |
| 266 | |
| 267 | /* |
| 268 | * Now we are ready to copy back preserved files to |
| 269 | * the system mailbox, if any were requested. |
| 270 | */ |
| 271 | |
| 272 | if (p != 0) { |
| 273 | writeback(rbuf); |
| 274 | fclose(fbuf); |
| 275 | return; |
| 276 | } |
| 277 | |
| 278 | /* |
| 279 | * Finally, remove his /usr/mail file. |
| 280 | * If new mail has arrived, copy it back. |
| 281 | */ |
| 282 | |
| 283 | cream: |
| 284 | if (rbuf != NULL) { |
| 285 | abuf = fopen(mailname, "r+"); |
| 286 | if (abuf == NULL) |
| 287 | goto newmail; |
| 288 | while ((c = getc(rbuf)) != EOF) |
| 289 | (void) putc(c, abuf); |
| 290 | fclose(rbuf); |
| 291 | trunc(abuf); |
| 292 | fclose(abuf); |
| 293 | alter(mailname); |
| 294 | fclose(fbuf); |
| 295 | return; |
| 296 | } |
| 297 | demail(); |
| 298 | fclose(fbuf); |
| 299 | return; |
| 300 | |
| 301 | newmail: |
| 302 | printf("Thou hast new mail.\n"); |
| 303 | if (fbuf != NULL) |
| 304 | fclose(fbuf); |
| 305 | } |
| 306 | |
| 307 | /* |
| 308 | * Preserve all the appropriate messages back in the system |
| 309 | * mailbox, and print a nice message indicated how many were |
| 310 | * saved. On any error, just return -1. Else return 0. |
| 311 | * Incorporate the any new mail that we found. |
| 312 | */ |
| 313 | writeback(res) |
| 314 | register FILE *res; |
| 315 | { |
| 316 | register struct message *mp; |
| 317 | register int p, c; |
| 318 | FILE *obuf; |
| 319 | |
| 320 | p = 0; |
| 321 | if ((obuf = fopen(mailname, "r+")) == NULL) { |
| 322 | perror(mailname); |
| 323 | return(-1); |
| 324 | } |
| 325 | #ifndef APPEND |
| 326 | if (res != NULL) |
| 327 | while ((c = getc(res)) != EOF) |
| 328 | (void) putc(c, obuf); |
| 329 | #endif |
| 330 | for (mp = &message[0]; mp < &message[msgCount]; mp++) |
| 331 | if ((mp->m_flag&MPRESERVE)||(mp->m_flag&MTOUCH)==0) { |
| 332 | p++; |
| 333 | if (send(mp, obuf, (struct ignoretab *)0, NOSTR) < 0) { |
| 334 | perror(mailname); |
| 335 | fclose(obuf); |
| 336 | return(-1); |
| 337 | } |
| 338 | } |
| 339 | #ifdef APPEND |
| 340 | if (res != NULL) |
| 341 | while ((c = getc(res)) != EOF) |
| 342 | (void) putc(c, obuf); |
| 343 | #endif |
| 344 | fflush(obuf); |
| 345 | trunc(obuf); |
| 346 | if (ferror(obuf)) { |
| 347 | perror(mailname); |
| 348 | fclose(obuf); |
| 349 | return(-1); |
| 350 | } |
| 351 | if (res != NULL) |
| 352 | fclose(res); |
| 353 | fclose(obuf); |
| 354 | alter(mailname); |
| 355 | if (p == 1) |
| 356 | printf("Held 1 message in %s\n", mailname); |
| 357 | else |
| 358 | printf("Held %d messages in %s\n", p, mailname); |
| 359 | return(0); |
| 360 | } |
| 361 | |
| 362 | /* |
| 363 | * Terminate an editing session by attempting to write out the user's |
| 364 | * file from the temporary. Save any new stuff appended to the file. |
| 365 | */ |
| 366 | edstop() |
| 367 | { |
| 368 | register int gotcha, c; |
| 369 | register struct message *mp; |
| 370 | FILE *obuf, *ibuf, *readstat; |
| 371 | struct stat statb; |
| 372 | char tempname[30]; |
| 373 | char *mktemp(); |
| 374 | |
| 375 | if (readonly) |
| 376 | return; |
| 377 | holdsigs(); |
| 378 | if (Tflag != NOSTR) { |
| 379 | if ((readstat = fopen(Tflag, "w")) == NULL) |
| 380 | Tflag = NOSTR; |
| 381 | } |
| 382 | for (mp = &message[0], gotcha = 0; mp < &message[msgCount]; mp++) { |
| 383 | if (mp->m_flag & MNEW) { |
| 384 | mp->m_flag &= ~MNEW; |
| 385 | mp->m_flag |= MSTATUS; |
| 386 | } |
| 387 | if (mp->m_flag & (MODIFY|MDELETED|MSTATUS)) |
| 388 | gotcha++; |
| 389 | if (Tflag != NOSTR && (mp->m_flag & (MREAD|MDELETED)) != 0) { |
| 390 | char *id; |
| 391 | |
| 392 | if ((id = hfield("article-id", mp)) != NOSTR) |
| 393 | fprintf(readstat, "%s\n", id); |
| 394 | } |
| 395 | } |
| 396 | if (Tflag != NOSTR) |
| 397 | fclose(readstat); |
| 398 | if (!gotcha || Tflag != NOSTR) |
| 399 | goto done; |
| 400 | ibuf = NULL; |
| 401 | if (stat(mailname, &statb) >= 0 && statb.st_size > mailsize) { |
| 402 | strcpy(tempname, _PATH_TMP); |
| 403 | strcat(tempname, "mboxXXXXXX"); |
| 404 | mktemp(tempname); |
| 405 | if ((obuf = fopen(tempname, "w")) == NULL) { |
| 406 | perror(tempname); |
| 407 | relsesigs(); |
| 408 | reset(0); |
| 409 | } |
| 410 | if ((ibuf = fopen(mailname, "r")) == NULL) { |
| 411 | perror(mailname); |
| 412 | fclose(obuf); |
| 413 | remove(tempname); |
| 414 | relsesigs(); |
| 415 | reset(0); |
| 416 | } |
| 417 | fseek(ibuf, mailsize, 0); |
| 418 | while ((c = getc(ibuf)) != EOF) |
| 419 | (void) putc(c, obuf); |
| 420 | fclose(ibuf); |
| 421 | fclose(obuf); |
| 422 | if ((ibuf = fopen(tempname, "r")) == NULL) { |
| 423 | perror(tempname); |
| 424 | remove(tempname); |
| 425 | relsesigs(); |
| 426 | reset(0); |
| 427 | } |
| 428 | remove(tempname); |
| 429 | } |
| 430 | printf("\"%s\" ", mailname); |
| 431 | fflush(stdout); |
| 432 | if ((obuf = fopen(mailname, "r+")) == NULL) { |
| 433 | perror(mailname); |
| 434 | relsesigs(); |
| 435 | reset(0); |
| 436 | } |
| 437 | trunc(obuf); |
| 438 | c = 0; |
| 439 | for (mp = &message[0]; mp < &message[msgCount]; mp++) { |
| 440 | if ((mp->m_flag & MDELETED) != 0) |
| 441 | continue; |
| 442 | c++; |
| 443 | if (send(mp, obuf, (struct ignoretab *) NULL, NOSTR) < 0) { |
| 444 | perror(mailname); |
| 445 | relsesigs(); |
| 446 | reset(0); |
| 447 | } |
| 448 | } |
| 449 | gotcha = (c == 0 && ibuf == NULL); |
| 450 | if (ibuf != NULL) { |
| 451 | while ((c = getc(ibuf)) != EOF) |
| 452 | (void) putc(c, obuf); |
| 453 | fclose(ibuf); |
| 454 | } |
| 455 | fflush(obuf); |
| 456 | if (ferror(obuf)) { |
| 457 | perror(mailname); |
| 458 | relsesigs(); |
| 459 | reset(0); |
| 460 | } |
| 461 | fclose(obuf); |
| 462 | if (gotcha) { |
| 463 | remove(mailname); |
| 464 | printf("removed\n"); |
| 465 | } else |
| 466 | printf("complete\n"); |
| 467 | fflush(stdout); |
| 468 | |
| 469 | done: |
| 470 | relsesigs(); |
| 471 | } |