1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088
|
/*
* Copyright (C) 1996-2000,2007 Michael R. Elkins <me@mutt.org>
* Copyright (C) 1999-2004,2006-7 Thomas Roessler <roessler@does-not-exist.org>
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* This file used to contain some more functions, namely those
* which are now in muttlib.c. They have been removed, so we have
* some of our "standard" functions in external programs, too.
*/
#define _LIB_C 1
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <errno.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pwd.h>
#include <sys/types.h>
#include <dirent.h>
#ifdef HAVE_SYSEXITS_H
#include <sysexits.h>
#else /* Make sure EX_OK is defined <philiph@pobox.com> */
#define EX_OK 0
#endif
#include "lib.h"
static const struct sysexits
{
int v;
const char *str;
}
sysexits_h[] =
{
#ifdef EX_USAGE
{ 0xff & EX_USAGE, "Bad usage." },
#endif
#ifdef EX_DATAERR
{ 0xff & EX_DATAERR, "Data format error." },
#endif
#ifdef EX_NOINPUT
{ 0xff & EX_NOINPUT, "Cannot open input." },
#endif
#ifdef EX_NOUSER
{ 0xff & EX_NOUSER, "User unknown." },
#endif
#ifdef EX_NOHOST
{ 0xff & EX_NOHOST, "Host unknown." },
#endif
#ifdef EX_UNAVAILABLE
{ 0xff & EX_UNAVAILABLE, "Service unavailable." },
#endif
#ifdef EX_SOFTWARE
{ 0xff & EX_SOFTWARE, "Internal error." },
#endif
#ifdef EX_OSERR
{ 0xff & EX_OSERR, "Operating system error." },
#endif
#ifdef EX_OSFILE
{ 0xff & EX_OSFILE, "System file missing." },
#endif
#ifdef EX_CANTCREAT
{ 0xff & EX_CANTCREAT, "Can't create output." },
#endif
#ifdef EX_IOERR
{ 0xff & EX_IOERR, "I/O error." },
#endif
#ifdef EX_TEMPFAIL
{ 0xff & EX_TEMPFAIL, "Deferred." },
#endif
#ifdef EX_PROTOCOL
{ 0xff & EX_PROTOCOL, "Remote protocol error." },
#endif
#ifdef EX_NOPERM
{ 0xff & EX_NOPERM, "Insufficient permission." },
#endif
#ifdef EX_CONFIG
{ 0xff & EX_NOPERM, "Local configuration error." },
#endif
{ S_ERR, "Exec error." },
{ -1, NULL}
};
void mutt_nocurses_error (const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
vfprintf (stderr, fmt, ap);
va_end (ap);
fputc ('\n', stderr);
}
void *safe_calloc (size_t nmemb, size_t size)
{
void *p;
if (!nmemb || !size)
return NULL;
if (((size_t) -1) / nmemb <= size)
{
mutt_error _("Integer overflow -- can't allocate memory!");
sleep (1);
mutt_exit (1);
}
if (!(p = calloc (nmemb, size)))
{
mutt_error _("Out of memory!");
sleep (1);
mutt_exit (1);
}
return p;
}
void *safe_malloc (size_t siz)
{
void *p;
if (siz == 0)
return 0;
if ((p = (void *) malloc (siz)) == 0) /* __MEM_CHECKED__ */
{
mutt_error _("Out of memory!");
sleep (1);
mutt_exit (1);
}
return (p);
}
void safe_realloc (void *ptr, size_t siz)
{
void *r;
void **p = (void **)ptr;
if (siz == 0)
{
if (*p)
{
free (*p); /* __MEM_CHECKED__ */
*p = NULL;
}
return;
}
if (*p)
r = (void *) realloc (*p, siz); /* __MEM_CHECKED__ */
else
{
/* realloc(NULL, nbytes) doesn't seem to work under SunOS 4.1.x --- __MEM_CHECKED__ */
r = (void *) malloc (siz); /* __MEM_CHECKED__ */
}
if (!r)
{
mutt_error _("Out of memory!");
sleep (1);
mutt_exit (1);
}
*p = r;
}
void safe_free (void *ptr) /* __SAFE_FREE_CHECKED__ */
{
void **p = (void **)ptr;
if (*p)
{
free (*p); /* __MEM_CHECKED__ */
*p = 0;
}
}
int safe_fclose (FILE **f)
{
int r = 0;
if (*f)
r = fclose (*f);
*f = NULL;
return r;
}
int safe_fsync_close (FILE **f)
{
int r = 0;
if (*f)
{
if (fflush (*f) || fsync (fileno (*f)))
{
r = -1;
safe_fclose (f);
}
else
r = safe_fclose (f);
}
return r;
}
char *safe_strdup (const char *s)
{
char *p;
size_t l;
if (!s || !*s)
return 0;
l = strlen (s) + 1;
p = (char *)safe_malloc (l);
memcpy (p, s, l);
return (p);
}
char *safe_strcat (char *d, size_t l, const char *s)
{
char *p = d;
if (!l)
return d;
l--; /* Space for the trailing '\0'. */
for (; *d && l; l--)
d++;
for (; *s && l; l--)
*d++ = *s++;
*d = '\0';
return p;
}
char *safe_strncat (char *d, size_t l, const char *s, size_t sl)
{
char *p = d;
if (!l)
return d;
l--; /* Space for the trailing '\0'. */
for (; *d && l; l--)
d++;
for (; *s && l && sl; l--, sl--)
*d++ = *s++;
*d = '\0';
return p;
}
void mutt_str_replace (char **p, const char *s)
{
FREE (p); /* __FREE_CHECKED__ */
*p = safe_strdup (s);
}
void mutt_str_adjust (char **p)
{
if (!p || !*p) return;
safe_realloc (p, strlen (*p) + 1);
}
/* convert all characters in the string to lowercase */
char *mutt_strlower (char *s)
{
char *p = s;
while (*p)
{
*p = tolower ((unsigned char) *p);
p++;
}
return (s);
}
void mutt_unlink (const char *s)
{
int fd;
int flags;
FILE *f;
struct stat sb, sb2;
char buf[2048];
/* Defend against symlink attacks */
#ifdef O_NOFOLLOW
flags = O_RDWR | O_NOFOLLOW;
#else
flags = O_RDWR;
#endif
if (lstat (s, &sb) == 0 && S_ISREG(sb.st_mode))
{
if ((fd = open (s, flags)) < 0)
return;
if ((fstat (fd, &sb2) != 0) || !S_ISREG (sb2.st_mode)
|| (sb.st_dev != sb2.st_dev) || (sb.st_ino != sb2.st_ino))
{
close (fd);
return;
}
if ((f = fdopen (fd, "r+")))
{
unlink (s);
memset (buf, 0, sizeof (buf));
while (sb.st_size > 0)
{
fwrite (buf, 1, MIN (sizeof (buf), sb.st_size), f);
sb.st_size -= MIN (sizeof (buf), sb.st_size);
}
safe_fclose (&f);
}
}
}
int mutt_copy_bytes (FILE *in, FILE *out, size_t size)
{
char buf[2048];
size_t chunk;
while (size > 0)
{
chunk = (size > sizeof (buf)) ? sizeof (buf) : size;
if ((chunk = fread (buf, 1, chunk, in)) < 1)
break;
if (fwrite (buf, 1, chunk, out) != chunk)
{
/* dprint (1, (debugfile, "mutt_copy_bytes(): fwrite() returned short byte count\n")); */
return (-1);
}
size -= chunk;
}
return 0;
}
int mutt_copy_stream (FILE *fin, FILE *fout)
{
size_t l;
char buf[LONG_STRING];
while ((l = fread (buf, 1, sizeof (buf), fin)) > 0)
{
if (fwrite (buf, 1, l, fout) != l)
return (-1);
}
return 0;
}
int
compare_stat (struct stat *osb, struct stat *nsb)
{
if (osb->st_dev != nsb->st_dev || osb->st_ino != nsb->st_ino ||
osb->st_rdev != nsb->st_rdev)
{
return -1;
}
return 0;
}
int safe_symlink(const char *oldpath, const char *newpath)
{
struct stat osb, nsb;
if(!oldpath || !newpath)
return -1;
if(unlink(newpath) == -1 && errno != ENOENT)
return -1;
if (oldpath[0] == '/')
{
if (symlink (oldpath, newpath) == -1)
return -1;
}
else
{
char abs_oldpath[_POSIX_PATH_MAX];
if ((getcwd (abs_oldpath, sizeof abs_oldpath) == NULL) ||
(strlen (abs_oldpath) + 1 + strlen (oldpath) + 1 > sizeof abs_oldpath))
return -1;
strcat (abs_oldpath, "/"); /* __STRCAT_CHECKED__ */
strcat (abs_oldpath, oldpath); /* __STRCAT_CHECKED__ */
if (symlink (abs_oldpath, newpath) == -1)
return -1;
}
if(stat(oldpath, &osb) == -1 || stat(newpath, &nsb) == -1
|| compare_stat(&osb, &nsb) == -1)
{
unlink(newpath);
return -1;
}
return 0;
}
/*
* This function is supposed to do nfs-safe renaming of files.
*
* Warning: We don't check whether src and target are equal.
*/
int safe_rename (const char *src, const char *target)
{
struct stat ssb, tsb;
if (!src || !target)
return -1;
if (link (src, target) != 0)
{
/*
* Coda does not allow cross-directory links, but tells
* us it's a cross-filesystem linking attempt.
*
* However, the Coda rename call is allegedly safe to use.
*
* With other file systems, rename should just fail when
* the files reside on different file systems, so it's safe
* to try it here.
*
*/
dprint (1, (debugfile, "safe_rename: link (%s, %s) failed: %s (%d)\n", src, target, strerror (errno), errno));
/*
* FUSE may return ENOSYS. VFAT may return EPERM. FreeBSD's
* msdosfs may return EOPNOTSUPP. ENOTSUP can also appear.
*/
if (errno == EXDEV || errno == ENOSYS || errno == EPERM
#ifdef ENOTSUP
|| errno == ENOTSUP
#endif
#ifdef EOPNOTSUPP
|| errno == EOPNOTSUPP
#endif
)
{
dprint (1, (debugfile, "safe_rename: trying rename...\n"));
if (rename (src, target) == -1)
{
dprint (1, (debugfile, "safe_rename: rename (%s, %s) failed: %s (%d)\n", src, target, strerror (errno), errno));
return -1;
}
dprint (1, (debugfile, "safe_rename: rename succeeded.\n"));
return 0;
}
return -1;
}
/*
* Stat both links and check if they are equal.
*/
if (lstat (src, &ssb) == -1)
{
dprint (1, (debugfile, "safe_rename: can't stat %s: %s (%d)\n",
src, strerror (errno), errno));
return -1;
}
if (lstat (target, &tsb) == -1)
{
dprint (1, (debugfile, "safe_rename: can't stat %s: %s (%d)\n",
src, strerror (errno), errno));
return -1;
}
/*
* pretend that the link failed because the target file
* did already exist.
*/
if (compare_stat (&ssb, &tsb) == -1)
{
dprint (1, (debugfile, "safe_rename: stat blocks for %s and %s diverge; pretending EEXIST.\n", src, target));
errno = EEXIST;
return -1;
}
/*
* Unlink the original link. Should we really ignore the return
* value here? XXX
*/
if (unlink (src) == -1)
{
dprint (1, (debugfile, "safe_rename: unlink (%s) failed: %s (%d)\n",
src, strerror (errno), errno));
}
return 0;
}
/* Create a temporary directory next to a file name */
static int mutt_mkwrapdir (const char *path, char *newfile, size_t nflen,
char *newdir, size_t ndlen)
{
const char *basename;
char parent[_POSIX_PATH_MAX];
char *p;
strfcpy (parent, NONULL (path), sizeof (parent));
if ((p = strrchr (parent, '/')))
{
*p = '\0';
basename = p + 1;
}
else
{
strfcpy (parent, ".", sizeof (parent));
basename = path;
}
snprintf (newdir, ndlen, "%s/%s", parent, ".muttXXXXXX");
if (mkdtemp(newdir) == NULL)
{
dprint(1, (debugfile, "mutt_mkwrapdir: mkdtemp() failed\n"));
return -1;
}
if (snprintf (newfile, nflen, "%s/%s", newdir, NONULL(basename)) >= nflen)
{
rmdir(newdir);
dprint(1, (debugfile, "mutt_mkwrapdir: string was truncated\n"));
return -1;
}
return 0;
}
/* remove a directory and everything under it */
int mutt_rmtree (const char* path)
{
DIR* dirp;
struct dirent* de;
char cur[_POSIX_PATH_MAX];
struct stat statbuf;
int rc = 0;
if (!(dirp = opendir (path)))
{
dprint (1, (debugfile, "mutt_rmtree: error opening directory %s\n", path));
return -1;
}
while ((de = readdir (dirp)))
{
if (!strcmp (".", de->d_name) || !strcmp ("..", de->d_name))
continue;
snprintf (cur, sizeof (cur), "%s/%s", path, de->d_name);
/* XXX make nonrecursive version */
if (stat(cur, &statbuf) == -1)
{
rc = 1;
continue;
}
if (S_ISDIR (statbuf.st_mode))
rc |= mutt_rmtree (cur);
else
rc |= unlink (cur);
}
closedir (dirp);
rc |= rmdir (path);
return rc;
}
static int mutt_put_file_in_place (const char *path, const char *safe_file, const char *safe_dir)
{
int rv;
rv = safe_rename (safe_file, path);
unlink (safe_file);
rmdir (safe_dir);
return rv;
}
int safe_open (const char *path, int flags)
{
struct stat osb, nsb;
int fd;
if (flags & O_EXCL)
{
char safe_file[_POSIX_PATH_MAX];
char safe_dir[_POSIX_PATH_MAX];
if (mutt_mkwrapdir (path, safe_file, sizeof (safe_file),
safe_dir, sizeof (safe_dir)) == -1)
return -1;
if ((fd = open (safe_file, flags, 0600)) < 0)
{
rmdir (safe_dir);
return fd;
}
/* NFS and I believe cygwin do not handle movement of open files well */
close (fd);
if (mutt_put_file_in_place (path, safe_file, safe_dir) == -1)
return -1;
}
if ((fd = open (path, flags & ~O_EXCL, 0600)) < 0)
return fd;
/* make sure the file is not symlink */
if (lstat (path, &osb) < 0 || fstat (fd, &nsb) < 0 ||
compare_stat(&osb, &nsb) == -1)
{
/* dprint (1, (debugfile, "safe_open(): %s is a symlink!\n", path)); */
close (fd);
return (-1);
}
return (fd);
}
/* when opening files for writing, make sure the file doesn't already exist
* to avoid race conditions.
*/
FILE *safe_fopen (const char *path, const char *mode)
{
if (mode[0] == 'w')
{
int fd;
int flags = O_CREAT | O_EXCL;
#ifdef O_NOFOLLOW
flags |= O_NOFOLLOW;
#endif
if (mode[1] == '+')
flags |= O_RDWR;
else
flags |= O_WRONLY;
if ((fd = safe_open (path, flags)) < 0)
return (NULL);
return (fdopen (fd, mode));
}
else
return (fopen (path, mode));
}
static const char safe_chars[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+@{}._-:%/";
void mutt_sanitize_filename (char *f, short slash)
{
if (!f) return;
for (; *f; f++)
{
if ((slash && *f == '/') || !strchr (safe_chars, *f))
*f = '_';
}
}
/* these characters must be escaped in regular expressions */
static const char rx_special_chars[] = "^.[$()|*+?{\\";
int mutt_rx_sanitize_string (char *dest, size_t destlen, const char *src)
{
while (*src && --destlen > 2)
{
if (strchr (rx_special_chars, *src))
{
*dest++ = '\\';
destlen--;
}
*dest++ = *src++;
}
*dest = '\0';
if (*src)
return -1;
else
return 0;
}
/* Read a line from ``fp'' into the dynamically allocated ``s'',
* increasing ``s'' if necessary. The ending "\n" or "\r\n" is removed.
* If a line ends with "\", this char and the linefeed is removed,
* and the next line is read too.
*/
char *mutt_read_line (char *s, size_t *size, FILE *fp, int *line, int flags)
{
size_t offset = 0;
char *ch;
if (!s)
{
s = safe_malloc (STRING);
*size = STRING;
}
FOREVER
{
if (fgets (s + offset, *size - offset, fp) == NULL)
{
FREE (&s);
return NULL;
}
if ((ch = strchr (s + offset, '\n')) != NULL)
{
if (line)
(*line)++;
if (flags & M_EOL)
return s;
*ch = 0;
if (ch > s && *(ch - 1) == '\r')
*--ch = 0;
if (!(flags & M_CONT) || ch == s || *(ch - 1) != '\\')
return s;
offset = ch - s - 1;
}
else
{
int c;
c = getc (fp); /* This is kind of a hack. We want to know if the
char at the current point in the input stream is EOF.
feof() will only tell us if we've already hit EOF, not
if the next character is EOF. So, we need to read in
the next character and manually check if it is EOF. */
if (c == EOF)
{
/* The last line of fp isn't \n terminated */
if (line)
(*line)++;
return s;
}
else
{
ungetc (c, fp); /* undo our damage */
/* There wasn't room for the line -- increase ``s'' */
offset = *size - 1; /* overwrite the terminating 0 */
*size += STRING;
safe_realloc (&s, *size);
}
}
}
}
char *
mutt_substrcpy (char *dest, const char *beg, const char *end, size_t destlen)
{
size_t len;
len = end - beg;
if (len > destlen - 1)
len = destlen - 1;
memcpy (dest, beg, len);
dest[len] = 0;
return dest;
}
char *mutt_substrdup (const char *begin, const char *end)
{
size_t len;
char *p;
if (end != NULL && end < begin)
return NULL;
if (end)
len = end - begin;
else
len = strlen (begin);
p = safe_malloc (len + 1);
memcpy (p, begin, len);
p[len] = 0;
return p;
}
/* prepare a file name to survive the shell's quoting rules.
* From the Unix programming FAQ by way of Liviu.
*/
size_t mutt_quote_filename (char *d, size_t l, const char *f)
{
size_t i, j = 0;
if(!f)
{
*d = '\0';
return 0;
}
/* leave some space for the trailing characters. */
l -= 6;
d[j++] = '\'';
for(i = 0; j < l && f[i]; i++)
{
if(f[i] == '\'' || f[i] == '`')
{
d[j++] = '\'';
d[j++] = '\\';
d[j++] = f[i];
d[j++] = '\'';
}
else
d[j++] = f[i];
}
d[j++] = '\'';
d[j] = '\0';
return j;
}
/* NULL-pointer aware string comparison functions */
int mutt_strcmp(const char *a, const char *b)
{
return strcmp(NONULL(a), NONULL(b));
}
int mutt_strcasecmp(const char *a, const char *b)
{
return strcasecmp(NONULL(a), NONULL(b));
}
int mutt_strncmp(const char *a, const char *b, size_t l)
{
return strncmp(NONULL(a), NONULL(b), l);
}
int mutt_strncasecmp(const char *a, const char *b, size_t l)
{
return strncasecmp(NONULL(a), NONULL(b), l);
}
size_t mutt_strlen(const char *a)
{
return a ? strlen (a) : 0;
}
int mutt_strcoll(const char *a, const char *b)
{
return strcoll(NONULL(a), NONULL(b));
}
const char *mutt_stristr (const char *haystack, const char *needle)
{
const char *p, *q;
if (!haystack)
return NULL;
if (!needle)
return (haystack);
while (*(p = haystack))
{
for (q = needle;
*p && *q &&
tolower ((unsigned char) *p) == tolower ((unsigned char) *q);
p++, q++)
;
if (!*q)
return (haystack);
haystack++;
}
return NULL;
}
char *mutt_skip_whitespace (char *p)
{
SKIPWS (p);
return p;
}
void mutt_remove_trailing_ws (char *s)
{
char *p;
for (p = s + mutt_strlen (s) - 1 ; p >= s && ISSPACE (*p) ; p--)
*p = 0;
}
/*
* Write the concatened pathname (dir + "/" + fname) into dst.
* The slash is ommitted when dir or fname is of 0 length.
* Returns NULL on error or a pointer to dst otherwise.
*/
char *mutt_concatn_path (char *dst, size_t dstlen,
const char *dir, size_t dirlen, const char *fname, size_t fnamelen)
{
size_t req;
size_t offset = 0;
if (dstlen == 0)
return NULL; /* probably should not mask errors like this */
/* size check */
req = dirlen + fnamelen + 1; /* +1 for the trailing nul */
if (dirlen && fnamelen)
req++; /* when both components are non-nul, we add a "/" in between */
if (req > dstlen) { /* check for condition where the dst length is too short */
/* Two options here:
* 1) assert(0) or return NULL to signal error
* 2) copy as much of the path as will fit
* It doesn't appear that the return value is actually checked anywhere mutt_concat_path()
* is called, so we should just copy set dst to nul and let the calling function fail later.
*/
dst[0] = 0; /* safe since we bail out early if dstlen == 0 */
return NULL;
}
if (dirlen) { /* when dir is not empty */
memcpy(dst, dir, dirlen);
offset = dirlen;
if (fnamelen)
dst[offset++] = '/';
}
if (fnamelen) { /* when fname is not empty */
memcpy(dst + offset, fname, fnamelen);
offset += fnamelen;
}
dst[offset] = 0;
return dst;
}
char *mutt_concat_path (char *d, const char *dir, const char *fname, size_t l)
{
const char *fmt = "%s/%s";
if (!*fname || (*dir && dir[strlen(dir)-1] == '/'))
fmt = "%s%s";
snprintf (d, l, fmt, dir, fname);
return d;
}
const char *mutt_basename (const char *f)
{
const char *p = strrchr (f, '/');
if (p)
return p + 1;
else
return f;
}
const char *
mutt_strsysexit(int e)
{
int i;
for(i = 0; sysexits_h[i].str; i++)
{
if(e == sysexits_h[i].v)
break;
}
return sysexits_h[i].str;
}
void mutt_debug (FILE *fp, const char *fmt, ...)
{
va_list ap;
time_t now = time (NULL);
static char buf[23] = "";
static time_t last = 0;
if (now > last)
{
strftime (buf, sizeof (buf), "%Y-%m-%d %H:%M:%S", localtime (&now));
last = now;
}
fprintf (fp, "[%s] ", buf);
va_start (ap, fmt);
vfprintf (fp, fmt, ap);
va_end (ap);
}
int mutt_atos (const char *str, short *dst)
{
int rc;
long res;
short tmp;
short *t = dst ? dst : &tmp;
*t = 0;
if ((rc = mutt_atol (str, &res)) < 0)
return rc;
if ((short) res != res)
return -2;
*t = (short) res;
return 0;
}
int mutt_atoi (const char *str, int *dst)
{
int rc;
long res;
int tmp;
int *t = dst ? dst : &tmp;
*t = 0;
if ((rc = mutt_atol (str, &res)) < 0)
return rc;
if ((int) res != res)
return -2;
*t = (int) res;
return 0;
}
int mutt_atol (const char *str, long *dst)
{
long r;
long *res = dst ? dst : &r;
char *e = NULL;
/* no input: 0 */
if (!str || !*str)
{
*res = 0;
return 0;
}
*res = strtol (str, &e, 10);
if ((*res == LONG_MAX && errno == ERANGE) ||
(e && *e != '\0'))
return -1;
return 0;
}
|