From 115cf1e322bdabaee001781e1d5a8ee4928992af Mon Sep 17 00:00:00 2001
From: janekptacijarabaci <janekptacijarabaci@seznam.cz>
Date: Sun, 22 Apr 2018 22:17:09 +0200
Subject: Revert "Bug 1182569: Update ContentSecurityManager to handle docshell
 loads"

This reverts commit 2e33335820b2816bee111e78588ac82e401c86ae.
---
 dom/security/nsContentSecurityManager.cpp | 81 +++++++------------------------
 1 file changed, 17 insertions(+), 64 deletions(-)

(limited to 'dom/security')

diff --git a/dom/security/nsContentSecurityManager.cpp b/dom/security/nsContentSecurityManager.cpp
index 458f41144..9329c558a 100644
--- a/dom/security/nsContentSecurityManager.cpp
+++ b/dom/security/nsContentSecurityManager.cpp
@@ -10,9 +10,6 @@
 #include "nsIStreamListener.h"
 #include "nsIDocument.h"
 #include "nsMixedContentBlocker.h"
-#include "nsCDefaultURIFixup.h"
-#include "nsIURIFixup.h"
-#include "nsINestedURI.h"
 
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/TabChild.h"
@@ -247,6 +244,10 @@ DoCORSChecks(nsIChannel* aChannel, nsILoadInfo* aLoadInfo,
 static nsresult
 DoContentSecurityChecks(nsIChannel* aChannel, nsILoadInfo* aLoadInfo)
 {
+  nsCOMPtr<nsIURI> uri;
+  nsresult rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(uri));
+  NS_ENSURE_SUCCESS(rv, rv);
+
   nsContentPolicyType contentPolicyType =
     aLoadInfo->GetExternalContentPolicyType();
   nsContentPolicyType internalContentPolicyType =
@@ -254,24 +255,12 @@ DoContentSecurityChecks(nsIChannel* aChannel, nsILoadInfo* aLoadInfo)
   nsCString mimeTypeGuess;
   nsCOMPtr<nsINode> requestingContext = nullptr;
 
-  nsCOMPtr<nsIURI> uri;
-  nsresult rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(uri));
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  if (contentPolicyType == nsIContentPolicy::TYPE_DOCUMENT ||
-      contentPolicyType == nsIContentPolicy::TYPE_SUBDOCUMENT) {
-    // TYPE_DOCUMENT and TYPE_SUBDOCUMENT loads might potentially
-    // be wyciwyg:// channels. Let's fix up the URI so we can
-    // perform proper security checks.
-    nsCOMPtr<nsIURIFixup> urifixup(do_GetService(NS_URIFIXUP_CONTRACTID, &rv));
-    if (NS_SUCCEEDED(rv) && urifixup) {
-      nsCOMPtr<nsIURI> fixedURI;
-      rv = urifixup->CreateExposableURI(uri, getter_AddRefs(fixedURI));
-      if (NS_SUCCEEDED(rv)) {
-        uri = fixedURI;
-      }
-    }
-  }
+#ifdef DEBUG
+  // Don't enforce TYPE_DOCUMENT assertions for loads
+  // initiated by javascript tests.
+  bool skipContentTypeCheck = false;
+  skipContentTypeCheck = Preferences::GetBool("network.loadinfo.skip_type_assertion");
+#endif
 
   switch(contentPolicyType) {
     case nsIContentPolicy::TYPE_OTHER: {
@@ -305,14 +294,16 @@ DoContentSecurityChecks(nsIChannel* aChannel, nsILoadInfo* aLoadInfo)
     }
 
     case nsIContentPolicy::TYPE_DOCUMENT: {
-      mimeTypeGuess = EmptyCString();
-      requestingContext = aLoadInfo->LoadingNode();
+      MOZ_ASSERT(skipContentTypeCheck || false, "contentPolicyType not supported yet");
       break;
     }
 
     case nsIContentPolicy::TYPE_SUBDOCUMENT: {
       mimeTypeGuess = NS_LITERAL_CSTRING("text/html");
       requestingContext = aLoadInfo->LoadingNode();
+      MOZ_ASSERT(!requestingContext ||
+                 requestingContext->NodeType() == nsIDOMNode::DOCUMENT_NODE,
+                 "type_subdocument requires requestingContext of type Document");
       break;
     }
 
@@ -456,32 +447,18 @@ DoContentSecurityChecks(nsIChannel* aChannel, nsILoadInfo* aLoadInfo)
       MOZ_ASSERT(false, "can not perform security check without a valid contentType");
   }
 
-  // For document loads we use the triggeringPrincipal as the originPrincipal.
-  // Note the the loadingPrincipal for loads of TYPE_DOCUMENT is a nullptr.
-  nsCOMPtr<nsIPrincipal> principal =
-    (contentPolicyType == nsIContentPolicy::TYPE_DOCUMENT ||
-    contentPolicyType == nsIContentPolicy::TYPE_SUBDOCUMENT)
-    ? aLoadInfo->TriggeringPrincipal()
-    : aLoadInfo->LoadingPrincipal();
-
   int16_t shouldLoad = nsIContentPolicy::ACCEPT;
   rv = NS_CheckContentLoadPolicy(internalContentPolicyType,
                                  uri,
-                                 principal,
+                                 aLoadInfo->LoadingPrincipal(),
                                  requestingContext,
                                  mimeTypeGuess,
                                  nullptr,        //extra,
                                  &shouldLoad,
                                  nsContentUtils::GetContentPolicy(),
                                  nsContentUtils::GetSecurityManager());
-
-  if (NS_FAILED(rv) || NS_CP_REJECTED(shouldLoad)) {
-    if ((NS_SUCCEEDED(rv) && shouldLoad == nsIContentPolicy::REJECT_TYPE) &&
-        (contentPolicyType == nsIContentPolicy::TYPE_DOCUMENT ||
-         contentPolicyType == nsIContentPolicy::TYPE_SUBDOCUMENT)) {
-      // for docshell loads we might have to return SHOW_ALT.
-      return NS_ERROR_CONTENT_BLOCKED_SHOW_ALT;
-    }
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (NS_CP_REJECTED(shouldLoad)) {
     return NS_ERROR_CONTENT_BLOCKED;
   }
 
@@ -629,30 +606,6 @@ nsContentSecurityManager::CheckChannel(nsIChannel* aChannel)
   nsresult rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(uri));
   NS_ENSURE_SUCCESS(rv, rv);
 
-  nsContentPolicyType contentPolicyType =
-    loadInfo->GetExternalContentPolicyType();
-
-  if (contentPolicyType == nsIContentPolicy::TYPE_DOCUMENT ||
-      contentPolicyType == nsIContentPolicy::TYPE_SUBDOCUMENT) {
-    // query the nested URI for security checks like in the case of view-source
-    nsCOMPtr<nsINestedURI> nestedURI = do_QueryInterface(uri);
-    if (nestedURI) {
-      nestedURI->GetInnerURI(getter_AddRefs(uri));
-    }
-
-    // TYPE_DOCUMENT and TYPE_SUBDOCUMENT loads might potentially
-    // be wyciwyg:// channels. Let's fix up the URI so we can
-    // perform proper security checks.
-    nsCOMPtr<nsIURIFixup> urifixup(do_GetService(NS_URIFIXUP_CONTRACTID, &rv));
-    if (NS_SUCCEEDED(rv) && urifixup) {
-      nsCOMPtr<nsIURI> fixedURI;
-      rv = urifixup->CreateExposableURI(uri, getter_AddRefs(fixedURI));
-      if (NS_SUCCEEDED(rv)) {
-        uri = fixedURI;
-      }
-    }
-  }
-
   // Handle cookie policies
   uint32_t cookiePolicy = loadInfo->GetCookiePolicy();
   if (cookiePolicy == nsILoadInfo::SEC_COOKIES_SAME_ORIGIN) {
-- 
cgit v1.2.3