Added missing host validation for HTTP urls inside FILTER_VALIDATE_URL.

diff --git a/NEWS b/NEWS
index cbc022391c3ba66c91220317ed8fd8dfe2182104..30a498f42a8cbad96f6df37913869a23dafabd2c 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,9 @@
 PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 ?? ??? 20??, PHP 5.3.3
+- Added missing host validation for HTTP urls inside FILTER_VALIDATE_URL.
+  (Ilia)
+
 - Fixed bug #47409 (extract() problem with array containing word "this").
   (Ilia, chrisstocktonaz at gmail dot com)
 

diff --git a/ext/filter/logical_filters.c b/ext/filter/logical_filters.c
index 2b72de1c2c9c70d6336494b53915bcfc544a1f90..4865cffa438ff9b9d9bffb2b0a5e369d85c21874 100644 (file)
--- a/ext/filter/logical_filters.c
+++ b/ext/filter/logical_filters.c
@@ -456,12 +456,35 @@ void php_filter_validate_url(PHP_INPUT_FILTER_PARAM_DECL) /* {{{ */
                RETURN_VALIDATION_FAILED
        }
 
+       if (url->scheme != NULL && (!strcasecmp(url->scheme, "http") || !strcasecmp(url->scheme, "https"))) {
+               char *e, *s;
+
+               if (url->host == NULL) {
+                       goto bad_url;
+               }
+
+               e = url->host + strlen(url->host);
+               s = url->host;
+
+               while (s < e) {
+                       if (!isalnum((int)*(unsigned char *)s) && *s != '_' && *s != '.') {
+                               goto bad_url;
+                       }
+                       s++;
+               }
+
+               if (*(e - 1) == '.') {
+                       goto bad_url;
+               }
+       }
+
        if (
                url->scheme == NULL || 
                /* some schemas allow the host to be empty */
                (url->host == NULL && (strcmp(url->scheme, "mailto") && strcmp(url->scheme, "news") && strcmp(url->scheme, "file"))) ||
                ((flags & FILTER_FLAG_PATH_REQUIRED) && url->path == NULL) || ((flags & FILTER_FLAG_QUERY_REQUIRED) && url->query == NULL)
        ) {
+bad_url:
                php_url_free(url);
                RETURN_VALIDATION_FAILED
        }