2 * $Id: mangle.c,v 1.1 2002-05-29 18:02:59 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 + strlen(ext)) {
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);
58 mangle(const struct vol *vol, char *filename) {
60 char mfilename[MAX_LENGTH+1];
61 char mangle_suffix[MANGLE_LENGTH+1];
62 char dir[MAXPATHLEN+1];
63 char tmp[MAXPATHLEN+1];
64 int mangle_suffix_int = 0;
66 /* Do we really need to mangle this filename? */
67 if (strlen(filename) <= MAX_LENGTH) {
71 /* First, attmept to locate a file extension. */
72 ext = strrchr(filename, '.');
74 getcwd(dir, MAXPATHLEN);
76 if (strlen(dir) > MAXPATHLEN - strlen(filename) - 1) {
77 LOG(log_error, logtype_default, "mangle: path is too large");
81 /* Check to see if we already have a mangled filename by this name. */
84 strncpy(mfilename, filename, MAX_LENGTH - strlen(MANGLE_CHAR) - MANGLE_LENGTH - ((ext != NULL)?strlen(ext):0));
85 strcat(mfilename, MANGLE_CHAR);
86 (void)sprintf(mangle_suffix, "%03d", mangle_suffix_int);
87 strcat(mfilename, mangle_suffix);
90 strcat(mfilename, ext);
94 strcat(tmp, mfilename);
96 if (!cnid_mangle_get(vol->v_db, tmp)) {
100 if (++mangle_suffix_int > MAX_MANGLE_SUFFIX_LENGTH) {
101 LOG(log_error, logtype_default, "mangle: Failed to find a free mangle suffix; returning original filename");
107 if (cnid_mangle_add(vol->v_db, mfilename, tmp) < 0) {
111 filename = mfilename;
115 #endif /* FILE_MANGLING */