s = ".";
if (sanitize_paths)
- s = sanitize_path(NULL, s, "", 0, NULL);
+ s = sanitize_path(NULL, s, "", 0);
else
s = strdup(s);
if (!s)
* Specify NULL to get the default of "module_dir".
*
* The depth var is a count of how many '..'s to allow at the start of the
- * path. If symlink is set, combine its value with the "p" value to get
- * the target path, and **return NULL if any '..'s try to escape**.
+ * path.
*
* We also clean the path in a manner similar to clean_fname() but with a
* few differences:
* ALWAYS collapses ".." elements (except for those at the start of the
* string up to "depth" deep). If the resulting name would be empty,
* change it into a ".". */
-char *sanitize_path(char *dest, const char *p, const char *rootdir, int depth,
- const char *symlink)
+char *sanitize_path(char *dest, const char *p, const char *rootdir, int depth)
{
- char *start, *sanp, *save_dest = dest;
+ char *start, *sanp;
int rlen = 0, leave_one_dotdir = relative_paths;
- if (symlink && *symlink == '/') {
- p = symlink;
- symlink = "";
- }
-
if (dest != p) {
int plen = strlen(p);
if (*p == '/') {
}
start = sanp = dest + rlen;
- while (1) {
- if (*p == '\0') {
- if (!symlink || !*symlink)
- break;
- while (sanp != start && sanp[-1] != '/') {
- /* strip last element */
- sanp--;
- }
- /* Append a relative symlink */
- p = symlink;
- symlink = "";
- }
+ while (*p) {
/* discard leading or extra slashes */
if (*p == '/') {
p++;
if (*p == '.' && p[1] == '.' && (p[2] == '/' || p[2] == '\0')) {
/* ".." component followed by slash or end */
if (depth <= 0 || sanp != start) {
- if (symlink && sanp == start) {
- if (!save_dest)
- free(dest);
- return NULL;
- }
p += 2;
if (sanp != start) {
/* back up sanp one level */