2 * $Id: mangle.c,v 1.4 2002-05-31 02:19:41 jmarcus Exp $
4 * Copyright (c) 2002. Joe Marcus Clarke (marcus@marcuscom.com)
5 * All Rights Reserved. See COPYRIGHT.
7 * mangle, demangle (filename):
8 * mangle or demangle filenames if they are greater than the max allowed
9 * characters for a given version of AFP.
14 #endif /* HAVE_CONFIG_H */
20 demangle(const struct vol *vol, char *mfilename) {
21 char *filename = NULL;
23 char dir[MAXPATHLEN + 1];
26 /* Is this really a mangled file? */
27 mangle = strstr(mfilename, MANGLE_CHAR);
32 ext = strrchr(mfilename, '.');
33 if (strlen(mangle) != strlen(MANGLE_CHAR) + MANGLE_LENGTH + ((ext != NULL)?strlen(ext):0)) {
37 getcwd(dir, MAXPATHLEN);
39 if (strlen(dir) > MAXPATHLEN - strlen(mfilename) - 1) {
40 LOG(log_error, logtype_default, "demangle: Path is too large");
45 strcat(dir, mfilename);
47 filename = cnid_mangle_get(vol->v_db, dir);
49 /* No unmangled filename was found. */
50 if (filename == NULL) {
51 LOG(log_debug, logtype_default, "demangle: Unable to lookup %s in the mangle database", dir);
59 mangle(const struct vol *vol, char *filename) {
63 static char mfilename[MAX_LENGTH + 1];
64 char mangle_suffix[MANGLE_LENGTH + 1];
65 char dir[MAXPATHLEN + 1];
66 char tmp[MAXPATHLEN + 1];
67 int mangle_suffix_int = 0;
69 /* Do we really need to mangle this filename? */
70 if (strlen(filename) <= MAX_LENGTH) {
74 /* First, attmept to locate a file extension. */
75 ext = strrchr(filename, '.');
77 getcwd(dir, MAXPATHLEN);
79 if (strlen(dir) > MAXPATHLEN - strlen(filename) - 1) {
80 LOG(log_error, logtype_default, "mangle: path is too large");
84 /* if ((mfilename = malloc(MAX_LENGTH + 1)) == NULL) {
85 LOG(log_error, logtype_default, "mangle: Failed to allocate memory to hold the mangled filename");
91 /* Check to see if we already have a mangled filename by this name. */
95 strncpy(m, filename, MAX_LENGTH - strlen(MANGLE_CHAR) - MANGLE_LENGTH - ((ext != NULL)?strlen(ext):0));
96 m[MAX_LENGTH - strlen(MANGLE_CHAR) - MANGLE_LENGTH - ((ext != NULL)?strlen(ext):0)] = '\0';
98 strcat(m, MANGLE_CHAR);
99 (void)sprintf(mangle_suffix, "%03d", mangle_suffix_int);
100 strcat(m, mangle_suffix);
109 tf = cnid_mangle_get(vol->v_db, tmp);
110 if (tf == NULL || (strcmp(tf, filename)) == 0) {
114 if (++mangle_suffix_int > MAX_MANGLE_SUFFIX_LENGTH) {
115 LOG(log_error, logtype_default, "mangle: Failed to find a free mangle suffix; returning original filename");
122 strcat(dir, filename);
124 if (cnid_mangle_add(vol->v_db, tmp, dir) < 0) {
130 #endif /* FILE_MANGLING */