Bug 214949

Make XUL error pages work again by making GetOrigin() return the full spec for chrome: URIs and preventing principal lookups when the principals hash is empty.
r+sr=jst@netscape.com
a=rjesup@wgate.com

caps/src/nsPrincipal.cpp

@@ -140,8 +140,18 @@ nsPrincipal::GetOrigin(char **aOrigin)
   NS_ASSERTION(uri, "No Domain or Codebase");
 
   nsCAutoString hostPort;
-  nsresult rv = uri->GetHostPort(hostPort);
-  if (NS_SUCCEEDED(rv)) {
+
+  // chrome: URLs don't have a meaningful origin, so make
+  // sure we just get the full spec for them.
+  // XXX this should be removed in favor of the solution in
+  // bug 160042.
+  PRBool isChrome;
+  nsresult rv = uri->SchemeIs("chrome", &isChrome);
+  if (NS_SUCCEEDED(rv) && !isChrome) {
+    rv = uri->GetHostPort(hostPort);
+  }
+
+  if (NS_SUCCEEDED(rv) && !isChrome) {
     nsCAutoString scheme;
     rv = uri->GetScheme(scheme);
     NS_ENSURE_SUCCESS(rv, rv);

caps/src/nsScriptSecurityManager.cpp

@@ -1654,6 +1654,8 @@ nsScriptSecurityManager::GetCodebasePrincipal(nsIURI *aURI,
     rv = CreateCodebasePrincipal(aURI, getter_AddRefs(principal));
     if (NS_FAILED(rv)) return rv;
 
+    if (mPrincipals.Count() > 0)
+    {
         //-- Check to see if we already have this principal.
         nsCOMPtr<nsIPrincipal> fromTable;
         mPrincipals.Get(principal, getter_AddRefs(fromTable));
@@ -1674,6 +1676,7 @@ nsScriptSecurityManager::GetCodebasePrincipal(nsIURI *aURI,
             if (fromTable)
                 principal = fromTable;
         }
+    }
 
     NS_IF_ADDREF(*result = principal);