url: Updated proxy URL parsing to use parse_login_details()

lib/url.c

@@ -4196,16 +4196,13 @@ static CURLcode parse_proxy(struct SessionHandle *data,
   /* Is there a username and password given in this proxy url? */
   atsign = strchr(proxyptr, '@');
   if(atsign) {
-    char proxyuser[MAX_CURL_USER_LENGTH];
-    char proxypasswd[MAX_CURL_PASSWORD_LENGTH];
-    proxypasswd[0] = 0;
-
-    if(1 <= sscanf(proxyptr,
-                   "%" MAX_CURL_USER_LENGTH_TXT"[^:@]:"
-                   "%" MAX_CURL_PASSWORD_LENGTH_TXT "[^@]",
-                   proxyuser, proxypasswd)) {
-      CURLcode res = CURLE_OK;
+    CURLcode res = CURLE_OK;
+    char *proxyuser = NULL;
+    char *proxypasswd = NULL;
 
+    res = parse_login_details(proxyptr, atsign - proxyptr,
+                              &proxyuser, &proxypasswd, NULL);
+    if(!res) {
       /* found user and password, rip them out.  note that we are
          unescaping them, as there is otherwise no way to have a
          username or password with reserved characters like ':' in
@@ -4223,7 +4220,7 @@ static CURLcode parse_proxy(struct SessionHandle *data,
           res = CURLE_OUT_OF_MEMORY;
       }
 
-      if(CURLE_OK == res) {
+      if(!res) {
         conn->bits.proxy_user_passwd = TRUE; /* enable it */
         atsign++; /* the right side of the @-letter */
 
@@ -4232,10 +4229,13 @@ static CURLcode parse_proxy(struct SessionHandle *data,
         else
           res = CURLE_OUT_OF_MEMORY;
       }
-
-      if(res)
-        return res;
     }
+
+    Curl_safefree(proxyuser);
+    Curl_safefree(proxypasswd);
+
+    if(res)
+      return res;
   }
 
   /* start scanning for port number at this point */