Simon Chopin
426da893a5
The semantics around whether or not enabling the crash reporter depend on the build type and the value of a couple of environment variables. The logic for this used to live in a couple of places, this patch simply consolidates it in mozglue, in order to use it later on. Differential Revision: https://phabricator.services.mozilla.com/D305184
106 lines
3.0 KiB
C++
106 lines
3.0 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "RuntimeExceptionModule.h"
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#include "mozilla/ProcessType.h"
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#include <stdlib.h>
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#if defined(XP_WIN)
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# include <windows.h>
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# if defined(__MINGW32__) || defined(__MINGW64__)
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// Add missing constants and types for mingw builds
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typedef HANDLE HREPORT;
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# define WerReportSubmit(a, b, c, d) \
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WerReportSubmit(a, b, c, WER_SUBMIT_RESULT* pSubmitResult)
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# define WER_MAX_PREFERRED_MODULES_BUFFER 256
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# endif // defined(__MINGW32__) || defined(__MINGW64__)
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# include <werapi.h> // For WerRegisterRuntimeExceptionModule()
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# if defined(__MINGW32__) || defined(__MINGW64__)
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# undef WerReportSubmit
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# endif // defined(__MINGW32__) || defined(__MINGW64__)
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# include <stdlib.h>
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#endif
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namespace CrashReporter {
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#ifdef XP_WIN
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const static size_t kModulePathLength = MAX_PATH + 1;
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static wchar_t sModulePath[kModulePathLength];
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bool GetRuntimeExceptionModulePath(wchar_t* aPath, const size_t aLength) {
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const wchar_t* kModuleName = L"mozwer.dll";
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DWORD res = ::GetModuleFileNameW(nullptr, aPath, aLength);
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if ((res > 0) && (res != aLength)) {
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wchar_t* last_backslash = wcsrchr(aPath, L'\\');
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if (last_backslash) {
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*(last_backslash + 1) = L'\0';
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if (wcscat_s(aPath, aLength, kModuleName) == 0) {
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return true;
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}
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}
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}
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return false;
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}
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#endif // XP_WIN
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void RegisterRuntimeExceptionModule() {
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#ifdef XP_WIN
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if (!CrashReporterIsEnabled()) {
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return;
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}
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// If sModulePath is set we have already registerd the module.
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if (*sModulePath) {
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return;
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}
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// If we fail to get the path just return.
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if (!GetRuntimeExceptionModulePath(sModulePath, kModulePathLength)) {
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return;
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}
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if (FAILED(::WerRegisterRuntimeExceptionModule(
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sModulePath,
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reinterpret_cast<PVOID>(mozilla::GetGeckoProcessType())))) {
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// The registration failed null out sModulePath to record this.
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*sModulePath = L'\0';
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return;
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}
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#endif // XP_WIN
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}
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void UnregisterRuntimeExceptionModule() {
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#ifdef XP_WIN
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// If sModulePath is set then we have registered the module.
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if (*sModulePath) {
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(void)::WerUnregisterRuntimeExceptionModule(
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sModulePath, reinterpret_cast<PVOID>(mozilla::GetGeckoProcessType()));
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*sModulePath = L'\0';
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}
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#endif // XP_WIN
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}
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bool CrashReporterIsEnabled(bool force) {
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if (force) {
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return true;
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}
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#if defined(DEBUG)
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// In debug builds, disable the crash reporter by default, and allow to
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// enable it with the MOZ_CRASHREPORTER environment variable.
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const char* envvar = getenv("MOZ_CRASHREPORTER");
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return envvar && *envvar;
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#else
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// In other builds, enable the crash reporter by default, and allow
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// disabling it with the MOZ_CRASHREPORTER_DISABLE environment variable.
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const char* envvar = getenv("MOZ_CRASHREPORTER_DISABLE");
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return !envvar || !*envvar;
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#endif
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}
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} // namespace CrashReporter
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