428
+ − 1 /* movemail foo bar -- move file foo to file bar,
438
+ − 2 locking file foo.
428
+ − 3 Copyright (C) 1986, 1992, 1993, 1994, 1996 Free Software Foundation, Inc.
+ − 4
438
+ − 5 This file is part of XEmacs.
428
+ − 6
438
+ − 7 XEmacs is free software; you can redistribute it and/or modify it
+ − 8 under the terms of the GNU General Public License as published by the
+ − 9 Free Software Foundation; either version 2, or (at your option) any
+ − 10 later version.
428
+ − 11
438
+ − 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ − 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ − 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ − 15 for more details.
428
+ − 16
+ − 17 You should have received a copy of the GNU General Public License
438
+ − 18 along with XEmacs; see the file COPYING. If not, write to
428
+ − 19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
438
+ − 20 Boston, MA 02111-1307, USA.
+ − 21
+ − 22 Please mail bugs and suggestions to the XEmacs maintainer.
+ − 23 */
428
+ − 24
438
+ − 25 /* Important notice:
+ − 26 *
+ − 27 * You *must* coordinate the locking method used by movemail with that
+ − 28 * used by your mail delivery agent, as well as that of the other mail
+ − 29 * user agents on your system. movemail allows you to do this at run
+ − 30 * time via the -m flag. Moreover, it uses a default determined by
+ − 31 * the MAIL_LOCK_DOT, MAIL_LOCK_LOCKF, MAIL_LOCK_FLOCK,
+ − 32 * MAIL_LOCK_LOCKING, and MAIL_LOCK_MMDF preprocessor settings.
+ − 33 */
428
+ − 34
438
+ − 35 /*
+ − 36 * Mike Sperber <sperber@informatik.uni-tuebingen.de> reorganized
+ − 37 * everything that has to with locking in December 1999.
+ − 38 */
428
+ − 39
+ − 40 /*
+ − 41 * Modified January, 1986 by Michael R. Gretzinger (Project Athena)
+ − 42 *
+ − 43 * Added POP (Post Office Protocol) service. When compiled -DMAIL_USE_POP
+ − 44 * movemail will accept input filename arguments of the form
+ − 45 * "po:username". This will cause movemail to open a connection to
+ − 46 * a pop server running on $MAILHOST (environment variable). Movemail
+ − 47 * must be setuid to root in order to work with POP.
+ − 48 *
+ − 49 * New module: popmail.c
+ − 50 * Modified routines:
+ − 51 * main - added code within #ifdef MAIL_USE_POP; added setuid (getuid ())
+ − 52 * after POP code.
+ − 53 * New routines in movemail.c:
+ − 54 * get_errmsg - return pointer to system error message
+ − 55 *
+ − 56 * Modified August, 1993 by Jonathan Kamens (OpenVision Technologies)
+ − 57 *
+ − 58 * Move all of the POP code into a separate file, "pop.c".
+ − 59 * Use strerror instead of get_errmsg.
+ − 60 *
+ − 61 */
+ − 62
+ − 63 #define NO_SHORTNAMES /* Tell config not to load remap.h */
438
+ − 64 #include <config.h>
428
+ − 65 #include <sys/types.h>
+ − 66 #include <sys/stat.h>
+ − 67 #include <stdio.h>
+ − 68 #include <errno.h>
+ − 69 #include "../src/sysfile.h"
+ − 70 #include "../src/syswait.h"
442
+ − 71 #ifndef WIN32_NATIVE
428
+ − 72 #include "../src/systime.h"
+ − 73 #endif
+ − 74 #include <stdlib.h>
+ − 75 #include <string.h>
+ − 76 #include "getopt.h"
+ − 77 #ifdef MAIL_USE_POP
+ − 78 #include "pop.h"
+ − 79 #include "../src/regex.h"
+ − 80 #endif
+ − 81
+ − 82 extern char *optarg;
+ − 83 extern int optind, opterr;
+ − 84
+ − 85 #ifndef HAVE_STRERROR
+ − 86 char * strerror (int errnum);
+ − 87 #endif /* HAVE_STRERROR */
+ − 88
+ − 89 #ifndef DIRECTORY_SEP
+ − 90 #define DIRECTORY_SEP '/'
+ − 91 #endif
+ − 92 #ifndef IS_DIRECTORY_SEP
+ − 93 #define IS_DIRECTORY_SEP(_c_) ((_c_) == DIRECTORY_SEP)
+ − 94 #endif
+ − 95
442
+ − 96 #ifdef WIN32_NATIVE
428
+ − 97 #undef access
+ − 98 #undef unlink
+ − 99 #define fork() 0
+ − 100 #define sys_wait(var) (*(var) = 0)
+ − 101 /* Unfortunately, Samba doesn't seem to properly lock Unix files even
+ − 102 though the locking call succeeds (and indeed blocks local access from
+ − 103 other NT programs). If you have direct file access using an NFS
+ − 104 client or something other than Samba, the locking call might work
+ − 105 properly - make sure it does before you enable this! */
+ − 106 #define DISABLE_DIRECT_ACCESS
+ − 107 #include <io.h>
442
+ − 108 #endif /* WIN32_NATIVE */
428
+ − 109
438
+ − 110 #if defined (HAVE_UNISTD_H)
428
+ − 111 #include <unistd.h>
+ − 112 #endif /* unistd.h */
+ − 113 #ifndef F_OK
+ − 114 #define F_OK 0
+ − 115 #define X_OK 1
+ − 116 #define W_OK 2
+ − 117 #define R_OK 4
+ − 118 #endif /* No F_OK */
+ − 119
438
+ − 120 #if defined (HAVE_FCNTL_H)
428
+ − 121 #include <fcntl.h>
+ − 122 #endif /* fcntl.h */
+ − 123
438
+ − 124 #ifdef HAVE_LOCKING
428
+ − 125 #include <sys/locking.h>
+ − 126 #endif
+ − 127
438
+ − 128 #ifdef HAVE_MMDF
428
+ − 129 extern int lk_open (), lk_close ();
+ − 130 #endif
+ − 131
+ − 132 /* Cancel substitutions made by config.h for Emacs. */
+ − 133 #undef open
+ − 134 #undef read
+ − 135 #undef write
+ − 136 #undef close
+ − 137
+ − 138 static void fatal (char *, char*);
+ − 139 static void error (char *, char *, char *);
438
+ − 140 static void usage(int);
428
+ − 141 static void pfatal_with_name (char *);
+ − 142 static void pfatal_and_delete (char *);
+ − 143 static char *concat (char *, char *, char *);
647
+ − 144 static long *xmalloc (int);
428
+ − 145 #ifdef MAIL_USE_POP
+ − 146 static int popmail (char *, char *, char *);
+ − 147 static int pop_retr (popserver server, int msgno,
440
+ − 148 int (*action)(char *, FILE *), FILE *arg);
428
+ − 149 static int mbx_write (char *, FILE *);
+ − 150 static int mbx_delimit_begin (FILE *);
+ − 151 static int mbx_delimit_end (FILE *);
+ − 152 static struct re_pattern_buffer* compile_regex (char* regexp_pattern);
+ − 153 static int pop_search_top (popserver server, int msgno, int lines,
+ − 154 struct re_pattern_buffer* regexp);
+ − 155 #endif
+ − 156
+ − 157 int verbose=0;
+ − 158 #ifdef MAIL_USE_POP
+ − 159 int reverse=0;
+ − 160 int keep_messages=0;
+ − 161 struct re_pattern_buffer* regexp_pattern=0;
+ − 162 int match_lines=10;
+ − 163 #endif
+ − 164
+ − 165 #define VERBOSE(x) if (verbose) { printf x; fflush(stdout); }
+ − 166
+ − 167 struct option longopts[] =
+ − 168 {
+ − 169 { "inbox", required_argument, NULL, 'i' },
+ − 170 { "outfile", required_argument, NULL, 'o' },
+ − 171 #ifdef MAIL_USE_POP
+ − 172 { "password", required_argument, NULL, 'p' },
+ − 173 { "reverse-pop-order", no_argument, NULL, 'x' },
+ − 174 { "keep-messages", no_argument, NULL, 'k' },
+ − 175 { "regex", required_argument, NULL, 'r' },
+ − 176 { "match-lines", required_argument, NULL, 'l' },
+ − 177 #endif
438
+ − 178 { "lock-method", required_argument, NULL, 'm' },
+ − 179 { "help", no_argument, NULL, 'h' },
428
+ − 180 { "verbose", no_argument, NULL, 'v' },
+ − 181 { 0 }
+ − 182 };
+ − 183
438
+ − 184 #define DOTLOCKING 0
+ − 185 #define FLOCKING 1
+ − 186 #define LOCKFING 2
+ − 187 #define MMDF 3
+ − 188 #define LOCKING 4
+ − 189
+ − 190 #if defined(MAIL_LOCK_FLOCK) && defined(HAVE_FLOCK)
+ − 191 #define DEFAULT_LOCKING FLOCKING
+ − 192 #elif defined(MAIL_LOCK_LOCKF) && defined(HAVE_LOCKF)
+ − 193 #define DEFAULT_LOCKING LOCKFING
+ − 194 #elif defined(MAIL_LOCK_MMDF) && defined(HAVE_MMDF)
+ − 195 #define DEFAULT_LOCKING MMDF
+ − 196 #elif defined(MAIL_LOCK_LOCKING) && defined(HAVE_LOCKING)
+ − 197 #define DEFAULT_LOCKING LOCKING
+ − 198 #else
+ − 199 #define DEFAULT_LOCKING DOTLOCKING
+ − 200 #endif
+ − 201
442
+ − 202 #ifndef DISABLE_DIRECT_ACCESS
438
+ − 203 static void lock_dot(char *);
442
+ − 204 #endif
438
+ − 205 static void unlock_dot(char *);
+ − 206 static int parse_lock_method(char *);
+ − 207 static char *unparse_lock_method(int);
+ − 208
428
+ − 209 int
+ − 210 main (int argc, char *argv[])
+ − 211 {
+ − 212 char *inname=0, *outname=0, *poppass=0;
+ − 213 #ifndef DISABLE_DIRECT_ACCESS
+ − 214 int indesc, outdesc;
+ − 215 int nread;
+ − 216 int status;
+ − 217 #endif
+ − 218
438
+ − 219 int lock_method = DEFAULT_LOCKING;
+ − 220
+ − 221 char *maybe_lock_env;
428
+ − 222
438
+ − 223 maybe_lock_env = getenv("EMACSLOCKMETHOD");
+ − 224 if (maybe_lock_env)
+ − 225 {
+ − 226 printf("maybe-lock_env: %s\n", maybe_lock_env);
+ − 227 lock_method = parse_lock_method(maybe_lock_env);
+ − 228 }
428
+ − 229
438
+ − 230 for (;;)
428
+ − 231 {
+ − 232 #ifdef MAIL_USE_POP
438
+ − 233 char* optstring = "i:o:m:p:l:r:xvhk";
428
+ − 234 #else
438
+ − 235 char* optstring = "i:o:m:vh";
428
+ − 236 #endif
+ − 237 int opt = getopt_long (argc, argv, optstring, longopts, 0);
+ − 238
+ − 239 if (opt == EOF)
+ − 240 break;
+ − 241
+ − 242 switch (opt)
+ − 243 {
+ − 244 case 0:
+ − 245 break;
+ − 246 case 1: /* one of the standard arguments seen */
+ − 247 if (!inname)
+ − 248 inname = optarg;
+ − 249 else if (!outname)
+ − 250 outname = optarg;
+ − 251 else
+ − 252 poppass = optarg;
+ − 253 break;
+ − 254
+ − 255 case 'i': /* infile */
+ − 256 inname = optarg;
+ − 257 break;
+ − 258
+ − 259 case 'o': /* outfile */
+ − 260 outname = optarg;
+ − 261 break;
+ − 262 #ifdef MAIL_USE_POP
+ − 263 case 'p': /* pop password */
+ − 264 poppass = optarg;
+ − 265 break;
+ − 266 case 'k': keep_messages=1; break;
+ − 267 case 'x': reverse = 1; break;
+ − 268 case 'l': /* lines to match */
+ − 269 match_lines = atoi (optarg);
+ − 270 break;
+ − 271
+ − 272 case 'r': /* regular expression */
+ − 273 regexp_pattern = compile_regex (optarg);
+ − 274 break;
+ − 275 #endif
438
+ − 276
+ − 277 case 'm':
+ − 278 lock_method = parse_lock_method(optarg);
+ − 279 break;
+ − 280 case 'h':
+ − 281 usage(lock_method);
+ − 282 exit(0);
+ − 283 case 'v':
+ − 284 verbose = 1;
+ − 285 break;
428
+ − 286 }
+ − 287 }
+ − 288
+ − 289 while (optind < argc)
+ − 290 {
+ − 291 if (!inname)
+ − 292 inname = argv[optind];
+ − 293 else if (!outname)
+ − 294 outname = argv[optind];
+ − 295 else
+ − 296 poppass = argv[optind];
+ − 297 optind++;
+ − 298 }
+ − 299
+ − 300 if (!inname || !outname)
+ − 301 {
438
+ − 302 usage(lock_method);
428
+ − 303 exit(1);
+ − 304 }
+ − 305
438
+ − 306 #ifdef HAVE_MMDF
+ − 307 if (lock_method == MMDF)
+ − 308 mmdf_init (argv[0]);
428
+ − 309 #endif
+ − 310
+ − 311 if (*outname == 0)
+ − 312 fatal ("Destination file name is empty", 0);
+ − 313
438
+ − 314 VERBOSE(("checking access to output file\n"));
428
+ − 315 /* Check access to output file. */
+ − 316 if (access (outname, F_OK) == 0 && access (outname, W_OK) != 0)
+ − 317 pfatal_with_name (outname);
+ − 318
+ − 319 /* Also check that outname's directory is writable to the real uid. */
+ − 320 {
+ − 321 char *buf = (char *) xmalloc (strlen (outname) + 1);
+ − 322 char *cp;
+ − 323 strcpy (buf, outname);
+ − 324 cp = buf + strlen (buf);
+ − 325 while (cp > buf && !IS_DIRECTORY_SEP (cp[-1]))
+ − 326 *--cp = 0;
+ − 327 if (cp == buf)
+ − 328 *cp++ = '.';
+ − 329 if (access (buf, W_OK) != 0)
+ − 330 pfatal_with_name (buf);
+ − 331 free (buf);
+ − 332 }
+ − 333
+ − 334 #ifdef MAIL_USE_POP
+ − 335 if (!strncmp (inname, "po:", 3))
+ − 336 {
+ − 337 int retcode = popmail (inname + 3, outname, poppass);
+ − 338 exit (retcode);
+ − 339 }
+ − 340
442
+ − 341 #ifndef WIN32_NATIVE
428
+ − 342 setuid (getuid ());
+ − 343 #endif
+ − 344 #endif /* MAIL_USE_POP */
+ − 345
+ − 346 #ifndef DISABLE_DIRECT_ACCESS
+ − 347
+ − 348 /* Check access to input file. */
+ − 349 if (access (inname, R_OK | W_OK) != 0)
+ − 350 pfatal_with_name (inname);
+ − 351
438
+ − 352
+ − 353 if (fork () == 0)
+ − 354 {
+ − 355 setuid (getuid ());
+ − 356
+ − 357 VERBOSE(("opening input file\n"));
+ − 358
+ − 359 switch (lock_method)
+ − 360 {
+ − 361 case DOTLOCKING:
+ − 362 indesc = open (inname, O_RDONLY);
+ − 363 break;
+ − 364 #ifdef HAVE_LOCKF
+ − 365 case LOCKFING:
+ − 366 indesc = open (inname, O_RDWR);
+ − 367 break;
+ − 368 #endif
+ − 369 #ifdef HAVE_FLOCK
+ − 370 case FLOCKING:
+ − 371 indesc = open (inname, O_RDWR);
+ − 372 break;
+ − 373 #endif
+ − 374 #ifdef HAVE_LOCKING
+ − 375 case LOCKING:
+ − 376 indesc = open (inname, O_RDWR);
+ − 377 break;
+ − 378 #endif
+ − 379 #ifdef HAVE_MMDF
+ − 380 case MMDF:
+ − 381 indesc = lk_open (inname, O_RDONLY, 0, 0, 10);
+ − 382 break;
+ − 383 #endif
+ − 384 default: abort();
+ − 385 }
+ − 386
+ − 387 if (indesc < 0)
+ − 388 pfatal_with_name (inname);
+ − 389
+ − 390 #ifdef HAVE_UMASK
+ − 391 /* In case movemail is setuid to root, make sure the user can
+ − 392 read the output file. */
+ − 393 umask (umask (0) & 0333);
+ − 394 #endif
+ − 395
+ − 396 outdesc = open (outname, O_WRONLY | O_CREAT | O_EXCL, 0666);
+ − 397 if (outdesc < 0)
+ − 398 pfatal_with_name (outname);
+ − 399
+ − 400 VERBOSE(("locking input file\n"));
428
+ − 401
438
+ − 402 switch (lock_method)
+ − 403 {
+ − 404 #ifdef HAVE_LOCKF
+ − 405 case LOCKFING:
+ − 406 if (lockf (indesc, F_LOCK, 0) < 0)
+ − 407 pfatal_with_name (inname);
+ − 408 break;
+ − 409 #endif
+ − 410 #ifdef HAVE_FLOCK
+ − 411 case FLOCKING:
+ − 412 if (flock (indesc, LOCK_EX) < 0)
+ − 413 pfatal_with_name (inname);
+ − 414 break;
+ − 415 #endif
+ − 416 #ifdef HAVE_LOCKING
+ − 417 case LOCKING:
+ − 418 if (locking (indesc, LK_RLCK, -1L) < 0)
+ − 419 pfatal_with_name (inname);
+ − 420 break;
+ − 421 #endif
+ − 422 case DOTLOCKING:
+ − 423 lock_dot(inname);
+ − 424 break;
+ − 425 }
+ − 426
+ − 427 VERBOSE(("copying input file to output file\n"));
+ − 428
+ − 429 {
+ − 430 char buf[1024];
+ − 431
+ − 432 while (1)
+ − 433 {
+ − 434 nread = read (indesc, buf, sizeof buf);
+ − 435 if (nread != write (outdesc, buf, nread))
+ − 436 {
+ − 437 int saved_errno = errno;
+ − 438 unlink (outname);
+ − 439 errno = saved_errno;
+ − 440 pfatal_with_name (outname);
+ − 441 }
647
+ − 442 if (nread < (int) sizeof (buf))
438
+ − 443 break;
+ − 444 }
+ − 445 }
+ − 446
+ − 447 #ifdef HAVE_FSYNC
+ − 448 if (fsync (outdesc) < 0)
+ − 449 pfatal_and_delete (outname);
+ − 450 #endif
+ − 451
+ − 452 /* Check to make sure no errors before we zap the inbox. */
+ − 453 if (close (outdesc) != 0)
+ − 454 pfatal_and_delete (outname);
+ − 455
+ − 456 VERBOSE(("deleting or truncating input file\n"));
428
+ − 457
438
+ − 458 switch (lock_method)
+ − 459 {
+ − 460 case LOCKFING:
+ − 461 case FLOCKING:
+ − 462 case LOCKING:
+ − 463 #ifdef HAVE_FTRUNCATE
+ − 464 ftruncate (indesc, 0L);
+ − 465 #else
+ − 466 close (open (inname, O_CREAT | O_TRUNC | O_RDWR, 0666));
+ − 467 #endif
+ − 468 close (indesc);
+ − 469 break;
+ − 470 #ifdef HAVE_MMDF
+ − 471 case MMDF:
+ − 472 lk_close (indesc, 0, 0, 0);
+ − 473 break;
+ − 474 #endif
+ − 475 case DOTLOCKING:
+ − 476 creat (inname, 0600);
+ − 477 break;
+ − 478 }
+ − 479
+ − 480 exit (0);
+ − 481 }
428
+ − 482
438
+ − 483 wait (&status);
+ − 484 if (!WIFEXITED (status))
+ − 485 exit (1);
+ − 486 else if (WEXITSTATUS (status) != 0)
+ − 487 exit (WEXITSTATUS (status));
+ − 488
+ − 489 if (lock_method == DOTLOCKING)
+ − 490 unlock_dot(inname);
+ − 491
+ − 492 #endif /* not DISABLE_DIRECT_ACCESS */
+ − 493
+ − 494 return 0;
+ − 495 }
+ − 496
+ − 497 static void
+ − 498 usage(int lock_method)
+ − 499 {
+ − 500 printf ("Usage: movemail [-rvxkh] [-l lines ] [-m method ] [-i] inbox [-o] destfile [[-p] POP-password]\n");
+ − 501 printf("where method is one of: dot");
+ − 502 #ifdef HAVE_LOCKF
+ − 503 printf(", lockf");
+ − 504 #endif
+ − 505 #ifdef HAVE_FLOCK
+ − 506 printf(", flock");
+ − 507 #endif
+ − 508 #ifdef HAVE_MMDF
+ − 509 printf(", mmdf");
+ − 510 #endif
+ − 511 #ifdef HAVE_LOCKING
+ − 512 printf(", locking");
+ − 513 #endif
+ − 514 printf("\nDefault is: %s\n", unparse_lock_method(lock_method));
+ − 515
+ − 516 }
428
+ − 517
438
+ − 518 static char *
+ − 519 unparse_lock_method(int lock_method)
+ − 520 {
+ − 521 switch (lock_method)
+ − 522 {
+ − 523 case DOTLOCKING: return "dot";
+ − 524 case FLOCKING: return "flock";
+ − 525 case LOCKFING: return "lockf";
+ − 526 case LOCKING: return "locking";
+ − 527 case MMDF: return "mmdf";
+ − 528 default: abort();return 0;
+ − 529 }
+ − 530 }
428
+ − 531
438
+ − 532 static int
+ − 533 parse_lock_method(char *method_name)
+ − 534 {
+ − 535 if (!strcmp("dot", method_name) || !strcmp("file", method_name))
+ − 536 return DOTLOCKING;
+ − 537 #ifdef HAVE_LOCKF
+ − 538 else if (!strcmp("lockf", method_name))
+ − 539 return LOCKFING;
+ − 540 #endif
+ − 541 #ifdef HAVE_FLOCK
+ − 542 else if (!strcmp("flock", method_name))
+ − 543 return FLOCKING;
+ − 544 #endif
+ − 545 #ifdef HAVE_MMDF
+ − 546 else if (!strcmp("mmdf", method_name))
+ − 547 return MMDF;
+ − 548 #endif
+ − 549 #ifdef HAVE_LOCKING
+ − 550 else if (!strcmp("locking", method_name))
+ − 551 return LOCKING;
+ − 552 #endif
+ − 553 else
+ − 554 fatal("invalid lock method: %s", method_name);
+ − 555 return 0; /* unreached */
+ − 556 }
+ − 557
+ − 558 static char *
+ − 559 dot_filename(char *filename)
+ − 560 {
+ − 561 return concat (filename, ".lock", "");
+ − 562 }
+ − 563
+ − 564 static char *dotlock_filename = NULL;
+ − 565
442
+ − 566 #ifndef DISABLE_DIRECT_ACCESS
438
+ − 567 static void
+ − 568 lock_dot(char *filename)
+ − 569 {
+ − 570 struct stat st;
+ − 571 long now;
+ − 572 int tem;
+ − 573 char *lockname, *p;
+ − 574 char *tempname;
+ − 575 int desc;
+ − 576
+ − 577 dotlock_filename = (char *) xmalloc(strlen(filename) + 1);
+ − 578
+ − 579 /* Use a lock file named after our first argument with .lock appended:
+ − 580 If it exists, the mail file is locked. */
+ − 581
+ − 582 lockname = dot_filename(filename);
+ − 583 tempname = (char *) xmalloc (strlen (filename) + strlen ("EXXXXXX") + 1);
+ − 584 strcpy (tempname, filename);
428
+ − 585 p = tempname + strlen (tempname);
+ − 586 while (p != tempname && !IS_DIRECTORY_SEP (p[-1]))
+ − 587 p--;
+ − 588 *p = 0;
+ − 589 strcpy (p, "EXXXXXX");
567
+ − 590 #ifndef HAVE_MKSTEMP
428
+ − 591 mktemp (tempname);
+ − 592 unlink (tempname);
567
+ − 593 #endif
428
+ − 594
438
+ − 595 for (;;)
428
+ − 596 {
+ − 597 /* Create the lock file, but not under the lock file name. */
+ − 598 /* Give up if cannot do that. */
567
+ − 599 #ifdef HAVE_MKSTEMP
+ − 600 desc = mkstemp (tempname);
+ − 601 #else
428
+ − 602 desc = open (tempname, O_WRONLY | O_CREAT | O_EXCL, 0666);
567
+ − 603 #endif
428
+ − 604 if (desc < 0)
+ − 605 {
+ − 606 char *message = (char *) xmalloc (strlen (tempname) + 50);
+ − 607 sprintf (message, "%s--see source file lib-src/movemail.c",
+ − 608 tempname);
+ − 609 pfatal_with_name (message);
+ − 610 }
+ − 611 close (desc);
+ − 612
+ − 613 tem = link (tempname, lockname);
+ − 614 unlink (tempname);
+ − 615 if (tem >= 0)
+ − 616 break;
+ − 617 sleep (1);
+ − 618
+ − 619 /* If lock file is five minutes old, unlock it.
+ − 620 Five minutes should be good enough to cope with crashes
+ − 621 and wedgitude, and long enough to avoid being fooled
+ − 622 by time differences between machines. */
+ − 623 if (stat (lockname, &st) >= 0)
+ − 624 {
+ − 625 now = time (0);
+ − 626 if (st.st_ctime < now - 300)
+ − 627 unlink (lockname);
+ − 628 }
+ − 629 }
438
+ − 630 strcpy(dotlock_filename, filename);
+ − 631 }
442
+ − 632 #endif /* not DISABLE_DIRECT_ACCESS */
428
+ − 633
438
+ − 634 static void
+ − 635 unlock_dot(char *filename)
+ − 636 {
+ − 637 unlink(dot_filename(filename));
+ − 638 }
428
+ − 639
438
+ − 640 static void
+ − 641 maybe_unlock_dot(void)
+ − 642 {
+ − 643 if (dotlock_filename)
+ − 644 unlock_dot(dotlock_filename);
+ − 645 }
428
+ − 646
+ − 647 /* Print error message and exit. */
+ − 648
+ − 649 static void
+ − 650 fatal (char *s1, char *s2)
+ − 651 {
438
+ − 652 maybe_unlock_dot();
428
+ − 653 error (s1, s2, NULL);
+ − 654 exit (1);
+ − 655 }
+ − 656
+ − 657 /* Print error message. `s1' is printf control string, `s2' is arg for it. */
+ − 658
+ − 659 static void
+ − 660 error (char *s1, char *s2, char *s3)
+ − 661 {
+ − 662 fprintf (stderr, "movemail: ");
+ − 663 fprintf (stderr, s1, s2, s3);
+ − 664 fprintf (stderr, "\n");
+ − 665 }
+ − 666
+ − 667 static void
+ − 668 pfatal_with_name (char *name)
+ − 669 {
+ − 670 char *s = concat ("", strerror (errno), " for %s");
+ − 671 fatal (s, name);
+ − 672 }
+ − 673
+ − 674 static void
+ − 675 pfatal_and_delete (char *name)
+ − 676 {
+ − 677 char *s = concat ("", strerror (errno), " for %s");
+ − 678 unlink (name);
+ − 679 fatal (s, name);
+ − 680 }
+ − 681
+ − 682 /* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */
+ − 683
+ − 684 static char *
+ − 685 concat (char *s1, char *s2, char *s3)
+ − 686 {
+ − 687 int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
+ − 688 char *result = (char *) xmalloc (len1 + len2 + len3 + 1);
+ − 689
+ − 690 strcpy (result, s1);
+ − 691 strcpy (result + len1, s2);
+ − 692 strcpy (result + len1 + len2, s3);
+ − 693 *(result + len1 + len2 + len3) = 0;
+ − 694
+ − 695 return result;
+ − 696 }
+ − 697
+ − 698 /* Like malloc but get fatal error if memory is exhausted. */
+ − 699
+ − 700 static long *
647
+ − 701 xmalloc (int size)
428
+ − 702 {
+ − 703 long *result = (long *) malloc (size);
+ − 704 if (!result)
+ − 705 fatal ("virtual memory exhausted", 0);
+ − 706 return result;
+ − 707 }
438
+ − 708
428
+ − 709 /* This is the guts of the interface to the Post Office Protocol. */
+ − 710
+ − 711 #ifdef MAIL_USE_POP
+ − 712
442
+ − 713 #ifndef WIN32_NATIVE
428
+ − 714 #include <sys/socket.h>
+ − 715 #include <netinet/in.h>
+ − 716 #include <netdb.h>
+ − 717 #else
+ − 718 #undef _WINSOCKAPI_
+ − 719 #include <winsock.h>
+ − 720 #endif
+ − 721 #include <stdio.h>
442
+ − 722 #include "../src/syspwd.h"
428
+ − 723
+ − 724 #define POP_ERROR (-1)
+ − 725 #define POP_RETRIEVED (0)
+ − 726 #define POP_DONE (1)
+ − 727
+ − 728 char *progname;
+ − 729 FILE *sfi;
+ − 730 FILE *sfo;
+ − 731 char ibuffer[BUFSIZ];
+ − 732 char obuffer[BUFSIZ];
+ − 733 char Errmsg[80];
+ − 734
+ − 735 static int
+ − 736 popmail (char *user, char *outfile, char *password)
+ − 737 {
+ − 738 int nmsgs, nbytes;
+ − 739 register int i, idx;
+ − 740 int mbfi;
+ − 741 short* retrieved_list;
+ − 742 FILE *mbf;
+ − 743 popserver server;
+ − 744
438
+ − 745 VERBOSE(("opening server\n"));
428
+ − 746 server = pop_open (0, user, password, POP_NO_GETPASS);
+ − 747 if (! server)
+ − 748 {
2584
+ − 749 error ("%s", pop_error, NULL);
428
+ − 750 return (1);
+ − 751 }
+ − 752
438
+ − 753 VERBOSE(("stat'ing messages\n"));
428
+ − 754 if (pop_stat (server, &nmsgs, &nbytes))
+ − 755 {
2584
+ − 756 error ("%s", pop_error, NULL);
428
+ − 757 return (1);
+ − 758 }
+ − 759
+ − 760 if (!nmsgs)
+ − 761 {
+ − 762 VERBOSE(("closing server\n"));
+ − 763 pop_close (server);
+ − 764 return (0);
+ − 765 }
+ − 766
+ − 767 /* build a retrieved table */
+ − 768 retrieved_list = (short*) xmalloc (sizeof (short) * (nmsgs+1));
+ − 769 memset (retrieved_list, 0, sizeof (short) * (nmsgs+1));
+ − 770
+ − 771 mbfi = open (outfile, O_WRONLY | O_CREAT | O_EXCL, 0666);
+ − 772 if (mbfi < 0)
+ − 773 {
+ − 774 pop_close (server);
+ − 775 error ("Error in open: %s, %s", strerror (errno), outfile);
+ − 776 return (1);
+ − 777 }
442
+ − 778 #if !defined(CYGWIN) && !defined(WIN32_NATIVE)
440
+ − 779 fchown (mbfi, getuid (), (gid_t) -1);
428
+ − 780 #endif
+ − 781
+ − 782 if ((mbf = fdopen (mbfi, "wb")) == NULL)
+ − 783 {
+ − 784 pop_close (server);
+ − 785 error ("Error in fdopen: %s", strerror (errno), NULL);
+ − 786 close (mbfi);
+ − 787 unlink (outfile);
+ − 788 return (1);
+ − 789 }
+ − 790
+ − 791 for (idx = 0; idx < nmsgs; idx++)
+ − 792 {
+ − 793 i = reverse ? nmsgs - idx : idx + 1;
438
+ − 794 VERBOSE(("checking message %d \n", i));
428
+ − 795
+ − 796 if (!regexp_pattern
+ − 797 ||
+ − 798 pop_search_top (server, i, match_lines, regexp_pattern) == POP_RETRIEVED)
+ − 799 {
438
+ − 800 VERBOSE(("retrieving message %d \n", i));
428
+ − 801 mbx_delimit_begin (mbf);
+ − 802 if (pop_retr (server, i, mbx_write, mbf) != POP_RETRIEVED)
+ − 803 {
2584
+ − 804 error ("%s", Errmsg, NULL);
428
+ − 805 close (mbfi);
+ − 806 return (1);
+ − 807 }
+ − 808
+ − 809 retrieved_list[i]=1;
+ − 810
+ − 811 mbx_delimit_end (mbf);
+ − 812 fflush (mbf);
+ − 813 if (ferror (mbf))
+ − 814 {
+ − 815 error ("Error in fflush: %s", strerror (errno), NULL);
+ − 816 pop_close (server);
+ − 817 close (mbfi);
+ − 818 return (1);
+ − 819 }
+ − 820 }
+ − 821 }
+ − 822
+ − 823 /* On AFS, a call to write only modifies the file in the local
+ − 824 * workstation's AFS cache. The changes are not written to the server
+ − 825 * until a call to fsync or close is made. Users with AFS home
+ − 826 * directories have lost mail when over quota because these checks were
+ − 827 * not made in previous versions of movemail. */
+ − 828
438
+ − 829 #ifdef HAVE_FSYNC
428
+ − 830 if (fsync (mbfi) < 0)
+ − 831 {
+ − 832 error ("Error in fsync: %s", strerror (errno), NULL);
+ − 833 return (1);
+ − 834 }
+ − 835 #endif
+ − 836
+ − 837 if (close (mbfi) == -1)
+ − 838 {
+ − 839 error ("Error in close: %s", strerror (errno), NULL);
+ − 840 return (1);
+ − 841 }
+ − 842
+ − 843 if (!keep_messages)
+ − 844 {
+ − 845 for (i = 1; i <= nmsgs; i++)
+ − 846 {
+ − 847 if (retrieved_list[i] == 1)
+ − 848 {
438
+ − 849 VERBOSE(("deleting message %d \n", i));
428
+ − 850 if (pop_delete (server, i))
+ − 851 {
2584
+ − 852 error ("%s", pop_error, NULL);
428
+ − 853 pop_close (server);
+ − 854 return (1);
+ − 855 }
+ − 856 }
+ − 857 }
+ − 858 }
+ − 859
+ − 860 VERBOSE(("closing server \n"));
+ − 861 if (pop_quit (server))
+ − 862 {
2584
+ − 863 error ("%s", pop_error, NULL);
428
+ − 864 return (1);
+ − 865 }
+ − 866
+ − 867 return (0);
+ − 868 }
+ − 869
+ − 870 static int
440
+ − 871 pop_retr (popserver server, int msgno, int (*action)(char *, FILE *), FILE *arg)
428
+ − 872 {
+ − 873 char *line;
+ − 874 int ret;
+ − 875
+ − 876 if (pop_retrieve_first (server, msgno, &line))
+ − 877 {
+ − 878 strncpy (Errmsg, pop_error, sizeof (Errmsg));
+ − 879 Errmsg[sizeof (Errmsg)-1] = '\0';
+ − 880 return (POP_ERROR);
+ − 881 }
+ − 882
+ − 883 while (! (ret = pop_retrieve_next (server, &line)))
+ − 884 {
+ − 885 if (! line)
+ − 886 break;
+ − 887
+ − 888 if ((*action)(line, arg) != POP_RETRIEVED)
+ − 889 {
+ − 890 strcpy (Errmsg, strerror (errno));
+ − 891 pop_close (server);
+ − 892 return (POP_ERROR);
+ − 893 }
+ − 894 }
+ − 895
+ − 896 if (ret)
+ − 897 {
+ − 898 strncpy (Errmsg, pop_error, sizeof (Errmsg));
+ − 899 Errmsg[sizeof (Errmsg)-1] = '\0';
+ − 900 return (POP_ERROR);
+ − 901 }
+ − 902
+ − 903 return (POP_RETRIEVED);
+ − 904 }
+ − 905
+ − 906 /* search the top lines of each message looking for a match */
+ − 907 static int
+ − 908 pop_search_top (popserver server, int msgno, int lines, struct re_pattern_buffer* regexp)
+ − 909 {
+ − 910 char *line;
+ − 911 int ret;
+ − 912 int match = POP_DONE;
+ − 913
+ − 914 if (pop_top_first (server, msgno, lines, &line))
+ − 915 {
+ − 916 strncpy (Errmsg, pop_error, sizeof (Errmsg));
+ − 917 Errmsg[sizeof (Errmsg)-1] = '\0';
+ − 918 return (POP_ERROR);
+ − 919 }
+ − 920
+ − 921 while (! (ret = pop_top_next (server, &line)))
+ − 922 {
+ − 923 if (! line)
+ − 924 break;
+ − 925
+ − 926 /* VERBOSE (("checking %s\n", line));*/
+ − 927 if (match != POP_RETRIEVED)
+ − 928 {
+ − 929 if ((ret = re_match (regexp, line, strlen (line), 0, 0)) == -2 )
+ − 930 {
+ − 931 strcpy (Errmsg, "error in regular expression");
+ − 932 pop_close (server);
+ − 933 return (POP_ERROR);
+ − 934 }
+ − 935 else if (ret >=0)
+ − 936 {
+ − 937 match = POP_RETRIEVED;
+ − 938 }
+ − 939 }
+ − 940 }
+ − 941
+ − 942 if (ret)
+ − 943 {
+ − 944 strncpy (Errmsg, pop_error, sizeof (Errmsg));
+ − 945 Errmsg[sizeof (Errmsg)-1] = '\0';
+ − 946 return (POP_ERROR);
+ − 947 }
+ − 948
+ − 949 return match;
+ − 950 }
+ − 951
+ − 952 /* Do this as a macro instead of using strcmp to save on execution time. */
+ − 953 #define IS_FROM_LINE(a) ((a[0] == 'F') \
+ − 954 && (a[1] == 'r') \
+ − 955 && (a[2] == 'o') \
+ − 956 && (a[3] == 'm') \
+ − 957 && (a[4] == ' '))
+ − 958
+ − 959 static int
+ − 960 mbx_write (char *line, FILE *mbf)
+ − 961 {
+ − 962 if (IS_FROM_LINE (line))
+ − 963 {
+ − 964 if (fputc ('>', mbf) == EOF)
+ − 965 return (POP_ERROR);
+ − 966 }
+ − 967 if (fputs (line, mbf) == EOF)
+ − 968 return (POP_ERROR);
+ − 969 if (fputc (0x0a, mbf) == EOF)
+ − 970 return (POP_ERROR);
+ − 971 return (POP_RETRIEVED);
+ − 972 }
+ − 973
+ − 974 static int
+ − 975 mbx_delimit_begin (FILE *mbf)
+ − 976 {
+ − 977 if (fputs ("\f\n0, unseen,,\n", mbf) == EOF)
+ − 978 return (POP_ERROR);
+ − 979 return (POP_RETRIEVED);
+ − 980 }
+ − 981
+ − 982 static int
+ − 983 mbx_delimit_end (FILE *mbf)
+ − 984 {
+ − 985 if (putc ('\037', mbf) == EOF)
+ − 986 return (POP_ERROR);
+ − 987 return (POP_RETRIEVED);
+ − 988 }
+ − 989
+ − 990 /* Turn a name, which is an ed-style (but Emacs syntax) regular
+ − 991 expression, into a real regular expression by compiling it. */
+ − 992 static struct re_pattern_buffer*
+ − 993 compile_regex (char* pattern)
+ − 994 {
+ − 995 char *err;
+ − 996 struct re_pattern_buffer *patbuf=0;
+ − 997
+ − 998 patbuf = (struct re_pattern_buffer*) xmalloc (sizeof (struct re_pattern_buffer));
+ − 999 patbuf->translate = NULL;
+ − 1000 patbuf->fastmap = NULL;
+ − 1001 patbuf->buffer = NULL;
+ − 1002 patbuf->allocated = 0;
+ − 1003
+ − 1004 err = (char*) re_compile_pattern (pattern, strlen (pattern), patbuf);
+ − 1005 if (err != NULL)
+ − 1006 {
+ − 1007 error ("%s while compiling pattern", err, NULL);
+ − 1008 return 0;
+ − 1009 }
+ − 1010
+ − 1011 return patbuf;
+ − 1012 }
+ − 1013
+ − 1014
+ − 1015
+ − 1016 #endif /* MAIL_USE_POP */
438
+ − 1017
428
+ − 1018 #ifndef HAVE_STRERROR
+ − 1019 char *
+ − 1020 strerror (int errnum)
+ − 1021 {
+ − 1022 extern char *sys_errlist[];
+ − 1023 extern int sys_nerr;
+ − 1024
+ − 1025 if (errnum >= 0 && errnum < sys_nerr)
+ − 1026 return sys_errlist[errnum];
+ − 1027 return (char *) "Unknown error";
+ − 1028 }
+ − 1029
+ − 1030 #endif /* ! HAVE_STRERROR */