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-rw-r--r--docshell/base/nsDSURIContentListener.cpp86
-rw-r--r--docshell/base/nsDSURIContentListener.h21
2 files changed, 74 insertions, 33 deletions
diff --git a/docshell/base/nsDSURIContentListener.cpp b/docshell/base/nsDSURIContentListener.cpp
index cfac54f7f..93ce3cb26 100644
--- a/docshell/base/nsDSURIContentListener.cpp
+++ b/docshell/base/nsDSURIContentListener.cpp
@@ -22,6 +22,7 @@
#include "nsIScriptError.h"
#include "nsDocShellLoadTypes.h"
#include "nsIMultiPartChannel.h"
+#include "mozilla/dom/nsCSPUtils.h"
using namespace mozilla;
@@ -84,14 +85,6 @@ nsDSURIContentListener::DoContent(const nsACString& aContentType,
NS_ENSURE_ARG_POINTER(aContentHandler);
NS_ENSURE_TRUE(mDocShell, NS_ERROR_FAILURE);
- // Check whether X-Frame-Options permits us to load this content in an
- // iframe and abort the load (unless we've disabled x-frame-options
- // checking).
- if (!CheckFrameOptions(aRequest)) {
- *aAbortProcess = true;
- return NS_OK;
- }
-
*aAbortProcess = false;
// determine if the channel has just been retargeted to us...
@@ -265,9 +258,10 @@ nsDSURIContentListener::SetParentContentListener(
return NS_OK;
}
-bool
+/* static */ bool
nsDSURIContentListener::CheckOneFrameOptionsPolicy(nsIHttpChannel* aHttpChannel,
- const nsAString& aPolicy)
+ const nsAString& aPolicy,
+ nsIDocShell* aDocShell)
{
static const char allowFrom[] = "allow-from";
const uint32_t allowFromLen = ArrayLength(allowFrom) - 1;
@@ -285,7 +279,7 @@ nsDSURIContentListener::CheckOneFrameOptionsPolicy(nsIHttpChannel* aHttpChannel,
aHttpChannel->GetURI(getter_AddRefs(uri));
// XXXkhuey when does this happen? Is returning true safe here?
- if (!mDocShell) {
+ if (!aDocShell) {
return true;
}
@@ -293,7 +287,7 @@ nsDSURIContentListener::CheckOneFrameOptionsPolicy(nsIHttpChannel* aHttpChannel,
// window, if we're not the top. X-F-O: SAMEORIGIN requires that the
// document must be same-origin with top window. X-F-O: DENY requires that
// the document must never be framed.
- nsCOMPtr<nsPIDOMWindowOuter> thisWindow = mDocShell->GetWindow();
+ nsCOMPtr<nsPIDOMWindowOuter> thisWindow = aDocShell->GetWindow();
// If we don't have DOMWindow there is no risk of clickjacking
if (!thisWindow) {
return true;
@@ -313,7 +307,7 @@ nsDSURIContentListener::CheckOneFrameOptionsPolicy(nsIHttpChannel* aHttpChannel,
// content-type docshell doesn't work because some chrome documents are
// loaded in content docshells (see bug 593387).
nsCOMPtr<nsIDocShellTreeItem> thisDocShellItem(
- do_QueryInterface(static_cast<nsIDocShell*>(mDocShell)));
+ do_QueryInterface(static_cast<nsIDocShell*>(aDocShell)));
nsCOMPtr<nsIDocShellTreeItem> parentDocShellItem;
nsCOMPtr<nsIDocShellTreeItem> curDocShellItem = thisDocShellItem;
nsCOMPtr<nsIDocument> topDoc;
@@ -402,22 +396,66 @@ nsDSURIContentListener::CheckOneFrameOptionsPolicy(nsIHttpChannel* aHttpChannel,
return true;
}
+// Ignore x-frame-options if CSP with frame-ancestors exists
+static bool
+ShouldIgnoreFrameOptions(nsIChannel* aChannel, nsIPrincipal* aPrincipal)
+{
+ NS_ENSURE_TRUE(aChannel, false);
+ NS_ENSURE_TRUE(aPrincipal, false);
+
+ nsCOMPtr<nsIContentSecurityPolicy> csp;
+ aPrincipal->GetCsp(getter_AddRefs(csp));
+ if (!csp) {
+ // if there is no CSP, then there is nothing to do here
+ return false;
+ }
+
+ bool enforcesFrameAncestors = false;
+ csp->GetEnforcesFrameAncestors(&enforcesFrameAncestors);
+ if (!enforcesFrameAncestors) {
+ // if CSP does not contain frame-ancestors, then there
+ // is nothing to do here.
+ return false;
+ }
+
+ // log warning to console that xfo is ignored because of CSP
+ nsCOMPtr<nsILoadInfo> loadInfo = aChannel->GetLoadInfo();
+ uint64_t innerWindowID = loadInfo ? loadInfo->GetInnerWindowID() : 0;
+ const char16_t* params[] = { u"x-frame-options",
+ u"frame-ancestors" };
+ CSP_LogLocalizedStr(u"IgnoringSrcBecauseOfDirective",
+ params, ArrayLength(params),
+ EmptyString(), // no sourcefile
+ EmptyString(), // no scriptsample
+ 0, // no linenumber
+ 0, // no columnnumber
+ nsIScriptError::warningFlag,
+ "CSP", innerWindowID);
+
+ return true;
+}
+
// Check if X-Frame-Options permits this document to be loaded as a subdocument.
// This will iterate through and check any number of X-Frame-Options policies
// in the request (comma-separated in a header, multiple headers, etc).
-bool
-nsDSURIContentListener::CheckFrameOptions(nsIRequest* aRequest)
+/* static */ bool
+nsDSURIContentListener::CheckFrameOptions(nsIChannel* aChannel,
+ nsIDocShell* aDocShell,
+ nsIPrincipal* aPrincipal)
{
- nsresult rv;
- nsCOMPtr<nsIChannel> chan = do_QueryInterface(aRequest);
- if (!chan) {
+ if (!aChannel || !aDocShell) {
return true;
}
- nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(chan);
+ if (ShouldIgnoreFrameOptions(aChannel, aPrincipal)) {
+ return true;
+ }
+
+ nsresult rv;
+ nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aChannel);
if (!httpChannel) {
// check if it is hiding in a multipart channel
- rv = mDocShell->GetHttpChannel(chan, getter_AddRefs(httpChannel));
+ rv = nsDocShell::Cast(aDocShell)->GetHttpChannel(aChannel, getter_AddRefs(httpChannel));
if (NS_FAILED(rv)) {
return false;
}
@@ -442,11 +480,11 @@ nsDSURIContentListener::CheckFrameOptions(nsIRequest* aRequest)
nsCharSeparatedTokenizer tokenizer(xfoHeaderValue, ',');
while (tokenizer.hasMoreTokens()) {
const nsSubstring& tok = tokenizer.nextToken();
- if (!CheckOneFrameOptionsPolicy(httpChannel, tok)) {
+ if (!CheckOneFrameOptionsPolicy(httpChannel, tok, aDocShell)) {
// cancel the load and display about:blank
httpChannel->Cancel(NS_BINDING_ABORTED);
- if (mDocShell) {
- nsCOMPtr<nsIWebNavigation> webNav(do_QueryObject(mDocShell));
+ if (aDocShell) {
+ nsCOMPtr<nsIWebNavigation> webNav(do_QueryObject(aDocShell));
if (webNav) {
webNav->LoadURI(u"about:blank",
0, nullptr, nullptr, nullptr);
@@ -459,7 +497,7 @@ nsDSURIContentListener::CheckFrameOptions(nsIRequest* aRequest)
return true;
}
-void
+/* static */ void
nsDSURIContentListener::ReportXFOViolation(nsIDocShellTreeItem* aTopDocShellItem,
nsIURI* aThisURI,
XFOHeader aHeader)
diff --git a/docshell/base/nsDSURIContentListener.h b/docshell/base/nsDSURIContentListener.h
index f33d1c045..432813471 100644
--- a/docshell/base/nsDSURIContentListener.h
+++ b/docshell/base/nsDSURIContentListener.h
@@ -28,6 +28,12 @@ public:
nsresult Init();
+ // Determine if X-Frame-Options allows content to be framed
+ // as a subdocument
+ static bool CheckFrameOptions(nsIChannel* aChannel,
+ nsIDocShell* aDocShell,
+ nsIPrincipal* aPrincipal);
+
protected:
explicit nsDSURIContentListener(nsDocShell* aDocShell);
virtual ~nsDSURIContentListener();
@@ -39,12 +45,9 @@ protected:
mExistingJPEGStreamListener = nullptr;
}
- // Determine if X-Frame-Options allows content to be framed
- // as a subdocument
- bool CheckFrameOptions(nsIRequest* aRequest);
- bool CheckOneFrameOptionsPolicy(nsIHttpChannel* aHttpChannel,
- const nsAString& aPolicy);
-
+ static bool CheckOneFrameOptionsPolicy(nsIHttpChannel* aHttpChannel,
+ const nsAString& aPolicy,
+ nsIDocShell* aDocShell);
enum XFOHeader
{
eDENY,
@@ -52,9 +55,9 @@ protected:
eALLOWFROM
};
- void ReportXFOViolation(nsIDocShellTreeItem* aTopDocShellItem,
- nsIURI* aThisURI,
- XFOHeader aHeader);
+ static void ReportXFOViolation(nsIDocShellTreeItem* aTopDocShellItem,
+ nsIURI* aThisURI,
+ XFOHeader aHeader);
protected:
nsDocShell* mDocShell;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 00:42:21 +0000