- /*
- * pretend that the link failed because the target file
- * did already exist.
- */
-
- if (compare_stat (&ssb, &tsb) == -1) {
- errno = EEXIST;
- return -1;
- }
-
- /*
- * Unlink the original link. Should we really ignore the return
- * value here? XXX
- */
-
- unlink (src);
-
- return 0;
-}
-
-int safe_open (const char *path, int flags)
-{
- struct stat osb, nsb;
- int fd;
-
- umask (Umask);
- if ((fd = open (path, flags, 0666)) < 0)
- return fd;
-
- /* make sure the file is not symlink */
- if (lstat (path, &osb) < 0 || fstat (fd, &nsb) < 0 ||
- compare_stat (&osb, &nsb) == -1) {
- debug_print (1, ("%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)
-{
- /* first set the current umask */
- umask (Umask);
- 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 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 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)
-{
- size_t offset = 0;
- char *ch;
-
- if (!s) {
- s = mem_malloc (STRING);
- *size = STRING;
- }
-
- FOREVER {
- if (fgets (s + offset, *size - offset, fp) == NULL) {
- mem_free (&s);
- return NULL;
- }
- if ((ch = strchr (s + offset, '\n')) != NULL) {
- (*line)++;
- *ch = 0;
- if (ch > s && *(ch - 1) == '\r')
- *--ch = 0;
- if (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 */
- (*line)++;
- return s;
- }
- else {
- ungetc (c, fp); /* undo our dammage */
- /* There wasn't room for the line -- increase ``s'' */
- offset = *size - 1; /* overwrite the terminating 0 */
- *size += STRING;
- mem_realloc (&s, *size);
- }
- }
- }
-}
-
-/* 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;
-}
-
-char *mutt_concat_path (char *d, const char *dir, const char *fname, size_t l)
-{
- const char *fmt = "%s/%s";
-
- if (!*fname || (*dir && dir[str_len (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;