- for (tok=strtok(dest,"/"); tok; tok=strtok(NULL,"/")) {
- if (strcmp(tok,"..") == 0) {
- depth--;
- } else if (strcmp(tok,".") == 0) {
+ for (name = dest; (slash = strchr(name, '/')) != 0; name = slash+1) {
+ if (strncmp(name, "../", 3) == 0) {
+ /* if at any point we go outside the current directory
+ then stop - it is unsafe */
+ if (--depth < 0)
+ return 1;
+ } else if (strncmp(name, "./", 2) == 0) {