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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /caps/nsJSPrincipals.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'caps/nsJSPrincipals.cpp')
-rw-r--r--caps/nsJSPrincipals.cpp299
1 files changed, 299 insertions, 0 deletions
diff --git a/caps/nsJSPrincipals.cpp b/caps/nsJSPrincipals.cpp
new file mode 100644
index 000000000..0f3afa14e
--- /dev/null
+++ b/caps/nsJSPrincipals.cpp
@@ -0,0 +1,299 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "xpcpublic.h"
+#include "nsString.h"
+#include "nsIObjectOutputStream.h"
+#include "nsIObjectInputStream.h"
+#include "nsJSPrincipals.h"
+#include "plstr.h"
+#include "nsXPIDLString.h"
+#include "nsCOMPtr.h"
+#include "nsIServiceManager.h"
+#include "nsMemory.h"
+#include "nsStringBuffer.h"
+
+#include "mozilla/dom/StructuredCloneTags.h"
+// for mozilla::dom::workers::kJSPrincipalsDebugToken
+#include "mozilla/dom/workers/Workers.h"
+#include "mozilla/ipc/BackgroundUtils.h"
+
+using namespace mozilla;
+using namespace mozilla::ipc;
+
+NS_IMETHODIMP_(MozExternalRefCountType)
+nsJSPrincipals::AddRef()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ NS_PRECONDITION(int32_t(refcount) >= 0, "illegal refcnt");
+ nsrefcnt count = ++refcount;
+ NS_LOG_ADDREF(this, count, "nsJSPrincipals", sizeof(*this));
+ return count;
+}
+
+NS_IMETHODIMP_(MozExternalRefCountType)
+nsJSPrincipals::Release()
+{
+ MOZ_ASSERT(NS_IsMainThread());
+ NS_PRECONDITION(0 != refcount, "dup release");
+ nsrefcnt count = --refcount;
+ NS_LOG_RELEASE(this, count, "nsJSPrincipals");
+ if (count == 0) {
+ delete this;
+ }
+
+ return count;
+}
+
+/* static */ bool
+nsJSPrincipals::Subsume(JSPrincipals *jsprin, JSPrincipals *other)
+{
+ bool result;
+ nsresult rv = nsJSPrincipals::get(jsprin)->Subsumes(nsJSPrincipals::get(other), &result);
+ return NS_SUCCEEDED(rv) && result;
+}
+
+/* static */ void
+nsJSPrincipals::Destroy(JSPrincipals *jsprin)
+{
+ // The JS runtime can call this method during the last GC when
+ // nsScriptSecurityManager is destroyed. So we must not assume here that
+ // the security manager still exists.
+
+ nsJSPrincipals *nsjsprin = nsJSPrincipals::get(jsprin);
+
+ // We need to destroy the nsIPrincipal. We'll do this by adding
+ // to the refcount and calling release
+
+#ifdef NS_BUILD_REFCNT_LOGGING
+ // The refcount logging considers AddRef-to-1 to indicate creation,
+ // so trick it into thinking it's otherwise, but balance the
+ // Release() we do below.
+ nsjsprin->refcount++;
+ nsjsprin->AddRef();
+ nsjsprin->refcount--;
+#else
+ nsjsprin->refcount++;
+#endif
+ nsjsprin->Release();
+}
+
+#ifdef DEBUG
+
+// Defined here so one can do principals->dump() in the debugger
+JS_PUBLIC_API(void)
+JSPrincipals::dump()
+{
+ if (debugToken == nsJSPrincipals::DEBUG_TOKEN) {
+ nsAutoCString str;
+ nsresult rv = static_cast<nsJSPrincipals *>(this)->GetScriptLocation(str);
+ fprintf(stderr, "nsIPrincipal (%p) = %s\n", static_cast<void*>(this),
+ NS_SUCCEEDED(rv) ? str.get() : "(unknown)");
+ } else if (debugToken == dom::workers::kJSPrincipalsDebugToken) {
+ fprintf(stderr, "Web Worker principal singleton (%p)\n", this);
+ } else {
+ fprintf(stderr,
+ "!!! JSPrincipals (%p) is not nsJSPrincipals instance - bad token: "
+ "actual=0x%x expected=0x%x\n",
+ this, unsigned(debugToken), unsigned(nsJSPrincipals::DEBUG_TOKEN));
+ }
+}
+
+#endif
+
+/* static */ bool
+nsJSPrincipals::ReadPrincipals(JSContext* aCx, JSStructuredCloneReader* aReader,
+ JSPrincipals** aOutPrincipals)
+{
+ uint32_t tag;
+ uint32_t unused;
+ if (!JS_ReadUint32Pair(aReader, &tag, &unused)) {
+ return false;
+ }
+
+ if (!(tag == SCTAG_DOM_NULL_PRINCIPAL ||
+ tag == SCTAG_DOM_SYSTEM_PRINCIPAL ||
+ tag == SCTAG_DOM_CONTENT_PRINCIPAL ||
+ tag == SCTAG_DOM_EXPANDED_PRINCIPAL)) {
+ xpc::Throw(aCx, NS_ERROR_DOM_DATA_CLONE_ERR);
+ return false;
+ }
+
+ return ReadKnownPrincipalType(aCx, aReader, tag, aOutPrincipals);
+}
+
+static bool
+ReadSuffixAndSpec(JSStructuredCloneReader* aReader,
+ PrincipalOriginAttributes& aAttrs,
+ nsACString& aSpec)
+{
+ uint32_t suffixLength, specLength;
+ if (!JS_ReadUint32Pair(aReader, &suffixLength, &specLength)) {
+ return false;
+ }
+
+ nsAutoCString suffix;
+ if (!suffix.SetLength(suffixLength, fallible)) {
+ return false;
+ }
+
+ if (!JS_ReadBytes(aReader, suffix.BeginWriting(), suffixLength)) {
+ return false;
+ }
+
+ if (!aAttrs.PopulateFromSuffix(suffix)) {
+ return false;
+ }
+
+ if (!aSpec.SetLength(specLength, fallible)) {
+ return false;
+ }
+
+ if (!JS_ReadBytes(aReader, aSpec.BeginWriting(), specLength)) {
+ return false;
+ }
+
+ return true;
+}
+
+static bool
+ReadPrincipalInfo(JSStructuredCloneReader* aReader,
+ uint32_t aTag,
+ PrincipalInfo& aInfo)
+{
+ if (aTag == SCTAG_DOM_SYSTEM_PRINCIPAL) {
+ aInfo = SystemPrincipalInfo();
+ } else if (aTag == SCTAG_DOM_NULL_PRINCIPAL) {
+ PrincipalOriginAttributes attrs;
+ nsAutoCString dummy;
+ if (!ReadSuffixAndSpec(aReader, attrs, dummy)) {
+ return false;
+ }
+ aInfo = NullPrincipalInfo(attrs);
+ } else if (aTag == SCTAG_DOM_EXPANDED_PRINCIPAL) {
+ uint32_t length, unused;
+ if (!JS_ReadUint32Pair(aReader, &length, &unused)) {
+ return false;
+ }
+
+ ExpandedPrincipalInfo expanded;
+
+ for (uint32_t i = 0; i < length; i++) {
+ uint32_t tag;
+ if (!JS_ReadUint32Pair(aReader, &tag, &unused)) {
+ return false;
+ }
+
+ PrincipalInfo sub;
+ if (!ReadPrincipalInfo(aReader, tag, sub)) {
+ return false;
+ }
+ expanded.whitelist().AppendElement(sub);
+ }
+
+ aInfo = expanded;
+ } else if (aTag == SCTAG_DOM_CONTENT_PRINCIPAL) {
+ PrincipalOriginAttributes attrs;
+ nsAutoCString spec;
+ if (!ReadSuffixAndSpec(aReader, attrs, spec)) {
+ return false;
+ }
+
+ aInfo = ContentPrincipalInfo(attrs, void_t(), spec);
+ } else {
+ MOZ_CRASH("unexpected principal structured clone tag");
+ }
+
+ return true;
+}
+
+/* static */ bool
+nsJSPrincipals::ReadKnownPrincipalType(JSContext* aCx,
+ JSStructuredCloneReader* aReader,
+ uint32_t aTag,
+ JSPrincipals** aOutPrincipals)
+{
+ MOZ_ASSERT(aTag == SCTAG_DOM_NULL_PRINCIPAL ||
+ aTag == SCTAG_DOM_SYSTEM_PRINCIPAL ||
+ aTag == SCTAG_DOM_CONTENT_PRINCIPAL ||
+ aTag == SCTAG_DOM_EXPANDED_PRINCIPAL);
+
+ if (NS_WARN_IF(!NS_IsMainThread())) {
+ xpc::Throw(aCx, NS_ERROR_UNCATCHABLE_EXCEPTION);
+ return false;
+ }
+
+ PrincipalInfo info;
+ if (!ReadPrincipalInfo(aReader, aTag, info)) {
+ return false;
+ }
+
+ nsresult rv;
+ nsCOMPtr<nsIPrincipal> prin = PrincipalInfoToPrincipal(info, &rv);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ xpc::Throw(aCx, NS_ERROR_DOM_DATA_CLONE_ERR);
+ return false;
+ }
+
+ *aOutPrincipals = get(prin.forget().take());
+ return true;
+}
+
+static bool
+WriteSuffixAndSpec(JSStructuredCloneWriter* aWriter,
+ const PrincipalOriginAttributes& aAttrs,
+ const nsCString& aSpec)
+{
+ nsAutoCString suffix;
+ aAttrs.CreateSuffix(suffix);
+
+ return JS_WriteUint32Pair(aWriter, suffix.Length(), aSpec.Length()) &&
+ JS_WriteBytes(aWriter, suffix.get(), suffix.Length()) &&
+ JS_WriteBytes(aWriter, aSpec.get(), aSpec.Length());
+}
+
+static bool
+WritePrincipalInfo(JSStructuredCloneWriter* aWriter, const PrincipalInfo& aInfo)
+{
+ if (aInfo.type() == PrincipalInfo::TNullPrincipalInfo) {
+ const NullPrincipalInfo& nullInfo = aInfo;
+ return JS_WriteUint32Pair(aWriter, SCTAG_DOM_NULL_PRINCIPAL, 0) &&
+ WriteSuffixAndSpec(aWriter, nullInfo.attrs(), EmptyCString());
+ }
+ if (aInfo.type() == PrincipalInfo::TSystemPrincipalInfo) {
+ return JS_WriteUint32Pair(aWriter, SCTAG_DOM_SYSTEM_PRINCIPAL, 0);
+ }
+ if (aInfo.type() == PrincipalInfo::TExpandedPrincipalInfo) {
+ const ExpandedPrincipalInfo& expanded = aInfo;
+ if (!JS_WriteUint32Pair(aWriter, SCTAG_DOM_EXPANDED_PRINCIPAL, 0) ||
+ !JS_WriteUint32Pair(aWriter, expanded.whitelist().Length(), 0)) {
+ return false;
+ }
+
+ for (uint32_t i = 0; i < expanded.whitelist().Length(); i++) {
+ if (!WritePrincipalInfo(aWriter, expanded.whitelist()[i])) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ MOZ_ASSERT(aInfo.type() == PrincipalInfo::TContentPrincipalInfo);
+ const ContentPrincipalInfo& cInfo = aInfo;
+ return JS_WriteUint32Pair(aWriter, SCTAG_DOM_CONTENT_PRINCIPAL, 0) &&
+ WriteSuffixAndSpec(aWriter, cInfo.attrs(), cInfo.spec());
+}
+
+bool
+nsJSPrincipals::write(JSContext* aCx, JSStructuredCloneWriter* aWriter)
+{
+ PrincipalInfo info;
+ if (NS_WARN_IF(NS_FAILED(PrincipalToPrincipalInfo(this, &info)))) {
+ xpc::Throw(aCx, NS_ERROR_DOM_DATA_CLONE_ERR);
+ return false;
+ }
+
+ return WritePrincipalInfo(aWriter, info);
+}