uhttpd: - make network timeout configurable, increase default to 30 seconds (#7067...

[openwrt/staging/yousong.git] / package / uhttpd / src / uhttpd-utils.c

diff --git a/package/uhttpd/src/uhttpd-utils.c b/package/uhttpd/src/uhttpd-utils.c
index 55b2c410e35714702bfd6aaf0d8159ca8076e693..e65f2136d64fce7b8518087eb4295e2bf22b2f3a 100644 (file)
--- a/package/uhttpd/src/uhttpd-utils.c
+++ b/package/uhttpd/src/uhttpd-utils.c
@@ -116,8 +116,8 @@ int uh_tcp_send(struct client *cl, const char *buf, int len)
        FD_ZERO(&writer);
        FD_SET(cl->socket, &writer);
 
-       timeout.tv_sec = 0;
-       timeout.tv_usec = 500000;
+       timeout.tv_sec = cl->server->conf->network_timeout;
+       timeout.tv_usec = 0;
 
        if( select(cl->socket + 1, NULL, &writer, NULL, &timeout) > 0 )
        {
@@ -376,6 +376,78 @@ int uh_b64decode(char *buf, int blen, const unsigned char *src, int slen)
        return len;
 }
 
+static char * canonpath(const char *path, char *path_resolved)
+{
+       char path_copy[PATH_MAX];
+       char *path_cpy = path_copy;
+       char *path_res = path_resolved;
+
+       struct stat s;
+
+
+       /* relative -> absolute */
+       if( *path != '/' )
+       {
+               getcwd(path_copy, PATH_MAX);
+               strncat(path_copy, "/", PATH_MAX - strlen(path_copy));
+               strncat(path_copy, path, PATH_MAX - strlen(path_copy));
+       }
+       else
+       {
+               strncpy(path_copy, path, PATH_MAX);
+       }
+
+       /* normalize */
+       while( (*path_cpy != '\0') && (path_cpy < (path_copy + PATH_MAX - 2)) )
+       {
+               if( *path_cpy == '/' )
+               {
+                       /* skip repeating / */
+                       if( path_cpy[1] == '/' )
+                       {
+                               path_cpy++;
+                               continue;
+                       }
+
+                       /* /./ or /../ */
+                       else if( path_cpy[1] == '.' )
+                       {
+                               /* skip /./ */
+                               if( (path_cpy[2] == '/') || (path_cpy[2] == '\0') )
+                               {
+                                       path_cpy += 2;
+                                       continue;
+                               }
+
+                               /* collapse /x/../ */
+                               else if( path_cpy[2] == '.' )
+                               {
+                                       while( (path_res > path_resolved) && (*--path_res != '/') )
+                                               ;
+
+                                       path_cpy += 3;
+                                       continue;
+                               }
+                       }
+               }
+
+               *path_res++ = *path_cpy++;
+       }
+
+       /* remove trailing slash if not root / */
+       if( (path_res > (path_resolved+1)) && (path_res[-1] == '/') )
+               path_res--;
+       else if( path_res == path_resolved )
+               *path_res++ = '/';
+
+       *path_res = '\0';
+
+       /* test access */
+       if( !stat(path_resolved, &s) && (s.st_mode & S_IROTH) )
+               return path_resolved;
+
+       return NULL;
+}
 
 struct path_info * uh_path_lookup(struct client *cl, const char *url)
 {
@@ -387,6 +459,7 @@ struct path_info * uh_path_lookup(struct client *cl, const char *url)
        char *docroot = cl->server->conf->docroot;
        char *pathptr = NULL;
 
+       int no_sym = cl->server->conf->no_symlinks;
        int i = 0;
        struct stat s;
 
@@ -432,8 +505,9 @@ struct path_info * uh_path_lookup(struct client *cl, const char *url)
                        memset(path_info, 0, sizeof(path_info));
                        memcpy(path_info, buffer, min(i + 1, sizeof(path_info) - 1));
 
-                       if( realpath(path_info, path_phys) )
-                       {
+                       if( no_sym ? realpath(path_info, path_phys)
+                                  : canonpath(path_info, path_phys)
+                       ) {
                                memset(path_info, 0, sizeof(path_info));
                                memcpy(path_info, &buffer[i],
                                        min(strlen(buffer) - i, sizeof(path_info) - 1));