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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/frame_host/debug_urls.h"
#if defined(SYZYASAN)
#include <windows.h>
#endif
#include <vector>
#include "base/command_line.h"
#include "base/debug/asan_invalid_access.h"
#include "base/debug/profiler.h"
#include "base/strings/utf_string_conversions.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread_restrictions.h"
#include "cc/base/switches.h"
#include "content/browser/gpu/gpu_process_host_ui_shim.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/common/content_constants.h"
#include "content/public/common/url_constants.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "third_party/kasko/kasko_features.h"
#include "url/gurl.h"
#if defined(ENABLE_PLUGINS)
#include "content/browser/ppapi_plugin_process_host.h"
#endif
namespace content {
namespace {
// Define the Asan debug URLs.
const char kAsanCrashDomain[] = "crash";
const char kAsanHeapOverflow[] = "/browser-heap-overflow";
const char kAsanHeapUnderflow[] = "/browser-heap-underflow";
const char kAsanUseAfterFree[] = "/browser-use-after-free";
#if defined(SYZYASAN)
const char kAsanCorruptHeapBlock[] = "/browser-corrupt-heap-block";
const char kAsanCorruptHeap[] = "/browser-corrupt-heap";
#endif
#if BUILDFLAG(ENABLE_KASKO)
// Define the Kasko debug URLs.
const char kKaskoCrashDomain[] = "kasko";
const char kKaskoSendReport[] = "/send-report";
#endif
void HandlePpapiFlashDebugURL(const GURL& url) {
#if defined(ENABLE_PLUGINS)
bool crash = url == GURL(kChromeUIPpapiFlashCrashURL);
std::vector<PpapiPluginProcessHost*> hosts;
PpapiPluginProcessHost::FindByName(
base::UTF8ToUTF16(kFlashPluginName), &hosts);
for (std::vector<PpapiPluginProcessHost*>::iterator iter = hosts.begin();
iter != hosts.end(); ++iter) {
if (crash)
(*iter)->Send(new PpapiMsg_Crash());
else
(*iter)->Send(new PpapiMsg_Hang());
}
#endif
}
bool IsKaskoDebugURL(const GURL& url) {
#if BUILDFLAG(ENABLE_KASKO)
return (url.is_valid() && url.SchemeIs(kChromeUIScheme) &&
url.DomainIs(kKaskoCrashDomain) &&
url.path() == kKaskoSendReport);
#else
return false;
#endif
}
void HandleKaskoDebugURL() {
#if BUILDFLAG(ENABLE_KASKO)
// Signature of the exported crash key setting function.
using SetCrashKeyValueImplPtr = void(__cdecl *)(const wchar_t*,
const wchar_t*);
// Signature of an enhanced crash reporting function.
using ReportCrashWithProtobufPtr = void(__cdecl *)(EXCEPTION_POINTERS*,
const char*);
HMODULE exe_hmodule = ::GetModuleHandle(NULL);
// First, set a crash key using the exported function reserved for Kasko
// clients (SyzyASAN for now).
SetCrashKeyValueImplPtr set_crash_key_value_impl =
reinterpret_cast<SetCrashKeyValueImplPtr>(
::GetProcAddress(exe_hmodule, "SetCrashKeyValueImpl"));
if (set_crash_key_value_impl)
set_crash_key_value_impl(L"kasko-set-crash-key-value-impl", L"true");
else
NOTREACHED();
// Next, invoke a crash report via Kasko.
ReportCrashWithProtobufPtr report_crash_with_protobuf =
reinterpret_cast<ReportCrashWithProtobufPtr>(
::GetProcAddress(exe_hmodule, "ReportCrashWithProtobuf"));
if (report_crash_with_protobuf)
report_crash_with_protobuf(NULL, "Invoked from debug url.");
else
NOTREACHED();
#else
NOTIMPLEMENTED();
#endif
}
bool IsAsanDebugURL(const GURL& url) {
#if defined(SYZYASAN)
if (!base::debug::IsBinaryInstrumented())
return false;
#endif
if (!(url.is_valid() && url.SchemeIs(kChromeUIScheme) &&
url.DomainIs(kAsanCrashDomain) &&
url.has_path())) {
return false;
}
if (url.path() == kAsanHeapOverflow || url.path() == kAsanHeapUnderflow ||
url.path() == kAsanUseAfterFree) {
return true;
}
#if defined(SYZYASAN)
if (url.path() == kAsanCorruptHeapBlock || url.path() == kAsanCorruptHeap)
return true;
#endif
return false;
}
bool HandleAsanDebugURL(const GURL& url) {
#if defined(SYZYASAN)
if (!base::debug::IsBinaryInstrumented())
return false;
if (url.path() == kAsanCorruptHeapBlock) {
base::debug::AsanCorruptHeapBlock();
return true;
} else if (url.path() == kAsanCorruptHeap) {
base::debug::AsanCorruptHeap();
return true;
}
#endif
#if defined(ADDRESS_SANITIZER) || defined(SYZYASAN)
if (url.path() == kAsanHeapOverflow) {
base::debug::AsanHeapOverflow();
} else if (url.path() == kAsanHeapUnderflow) {
base::debug::AsanHeapUnderflow();
} else if (url.path() == kAsanUseAfterFree) {
base::debug::AsanHeapUseAfterFree();
} else {
return false;
}
#endif
return true;
}
} // namespace
class ScopedAllowWaitForDebugURL {
private:
base::ThreadRestrictions::ScopedAllowWait wait;
};
bool HandleDebugURL(const GURL& url, ui::PageTransition transition) {
// Ensure that the user explicitly navigated to this URL, unless
// kEnableGpuBenchmarking is enabled by Telemetry.
bool is_telemetry_navigation =
base::CommandLine::ForCurrentProcess()->HasSwitch(
cc::switches::kEnableGpuBenchmarking) &&
(PageTransitionCoreTypeIs(transition, ui::PAGE_TRANSITION_TYPED));
if (!(transition & ui::PAGE_TRANSITION_FROM_ADDRESS_BAR) &&
!is_telemetry_navigation)
return false;
if (IsAsanDebugURL(url))
return HandleAsanDebugURL(url);
if (IsKaskoDebugURL(url)) {
HandleKaskoDebugURL();
return true;
}
if (url == GURL(kChromeUIBrowserCrashURL)) {
// Induce an intentional crash in the browser process.
CHECK(false);
return true;
}
if (url == GURL(kChromeUIBrowserUIHang)) {
ScopedAllowWaitForDebugURL allow_wait;
base::WaitableEvent(false, false).Wait();
return true;
}
if (url == GURL(kChromeUIGpuCleanURL)) {
GpuProcessHostUIShim* shim = GpuProcessHostUIShim::GetOneInstance();
if (shim)
shim->SimulateRemoveAllContext();
return true;
}
if (url == GURL(kChromeUIGpuCrashURL)) {
GpuProcessHostUIShim* shim = GpuProcessHostUIShim::GetOneInstance();
if (shim)
shim->SimulateCrash();
return true;
}
if (url == GURL(kChromeUIGpuHangURL)) {
GpuProcessHostUIShim* shim = GpuProcessHostUIShim::GetOneInstance();
if (shim)
shim->SimulateHang();
return true;
}
if (url == GURL(kChromeUIPpapiFlashCrashURL) ||
url == GURL(kChromeUIPpapiFlashHangURL)) {
BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
base::Bind(&HandlePpapiFlashDebugURL, url));
return true;
}
return false;
}
bool IsRendererDebugURL(const GURL& url) {
if (!url.is_valid())
return false;
if (url.SchemeIs(url::kJavaScriptScheme))
return true;
return url == GURL(kChromeUIBadCastCrashURL) ||
url == GURL(kChromeUICrashURL) ||
url == GURL(kChromeUIDumpURL) ||
url == GURL(kChromeUIKillURL) ||
url == GURL(kChromeUIHangURL) ||
url == GURL(kChromeUIShorthangURL);
}
} // namespace content
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