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-rw-r--r--src/client/windows/crash_generation/crash_generation_client.cc56
-rw-r--r--src/client/windows/crash_generation/crash_generation_client.h16
-rwxr-xr-xsrc/client/windows/handler/exception_handler.cc38
-rw-r--r--src/client/windows/handler/exception_handler.h14
4 files changed, 120 insertions, 4 deletions
diff --git a/src/client/windows/crash_generation/crash_generation_client.cc b/src/client/windows/crash_generation/crash_generation_client.cc
index ffbcaf20..b0d3d04d 100644
--- a/src/client/windows/crash_generation/crash_generation_client.cc
+++ b/src/client/windows/crash_generation/crash_generation_client.cc
@@ -95,6 +95,27 @@ CrashGenerationClient::CrashGenerationClient(
MINIDUMP_TYPE dump_type,
const CustomClientInfo* custom_info)
: pipe_name_(pipe_name),
+ pipe_handle_(NULL),
+ dump_type_(dump_type),
+ thread_id_(0),
+ server_process_id_(0),
+ crash_event_(NULL),
+ crash_generated_(NULL),
+ server_alive_(NULL),
+ exception_pointers_(NULL),
+ custom_info_() {
+ memset(&assert_info_, 0, sizeof(assert_info_));
+ if (custom_info) {
+ custom_info_ = *custom_info;
+ }
+}
+
+CrashGenerationClient::CrashGenerationClient(
+ HANDLE pipe_handle,
+ MINIDUMP_TYPE dump_type,
+ const CustomClientInfo* custom_info)
+ : pipe_name_(),
+ pipe_handle_(pipe_handle),
dump_type_(dump_type),
thread_id_(0),
server_process_id_(0),
@@ -248,6 +269,12 @@ bool CrashGenerationClient::RegisterClient(HANDLE pipe) {
HANDLE CrashGenerationClient::ConnectToPipe(const wchar_t* pipe_name,
DWORD pipe_access,
DWORD flags_attrs) {
+ if (pipe_handle_) {
+ HANDLE t = pipe_handle_;
+ pipe_handle_ = NULL;
+ return t;
+ }
+
for (int i = 0; i < kPipeConnectMaxAttempts; ++i) {
HANDLE pipe = CreateFile(pipe_name,
pipe_access,
@@ -342,4 +369,33 @@ bool CrashGenerationClient::SignalCrashEventAndWait() {
return result == WAIT_OBJECT_0;
}
+HANDLE CrashGenerationClient::DuplicatePipeToClientProcess(const wchar_t* pipe_name,
+ HANDLE hProcess) {
+ for (int i = 0; i < kPipeConnectMaxAttempts; ++i) {
+ HANDLE local_pipe = CreateFile(pipe_name, kPipeDesiredAccess,
+ 0, NULL, OPEN_EXISTING,
+ kPipeFlagsAndAttributes, NULL);
+ if (local_pipe != INVALID_HANDLE_VALUE) {
+ HANDLE remotePipe = INVALID_HANDLE_VALUE;
+ if (DuplicateHandle(GetCurrentProcess(), local_pipe,
+ hProcess, &remotePipe, 0, FALSE,
+ DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) {
+ return remotePipe;
+ } else {
+ return INVALID_HANDLE_VALUE;
+ }
+ }
+
+ // Cannot continue retrying if the error wasn't a busy pipe.
+ if (GetLastError() != ERROR_PIPE_BUSY) {
+ return INVALID_HANDLE_VALUE;
+ }
+
+ if (!WaitNamedPipe(pipe_name, kPipeBusyWaitTimeoutMs)) {
+ return INVALID_HANDLE_VALUE;
+ }
+ }
+ return INVALID_HANDLE_VALUE;
+}
+
} // namespace google_breakpad
diff --git a/src/client/windows/crash_generation/crash_generation_client.h b/src/client/windows/crash_generation/crash_generation_client.h
index 85a0456c..2ce14dd2 100644
--- a/src/client/windows/crash_generation/crash_generation_client.h
+++ b/src/client/windows/crash_generation/crash_generation_client.h
@@ -66,6 +66,10 @@ class CrashGenerationClient {
MINIDUMP_TYPE dump_type,
const CustomClientInfo* custom_info);
+ CrashGenerationClient(HANDLE pipe_handle,
+ MINIDUMP_TYPE dump_type,
+ const CustomClientInfo* custom_info);
+
~CrashGenerationClient();
// Registers the client process with the crash server.
@@ -96,6 +100,14 @@ class CrashGenerationClient {
// false will be returned.
bool RequestDump(MDRawAssertionInfo* assert_info);
+ // If the crash generation client is running in a sandbox that prevents it
+ // from opening the named pipe directly, the server process may open the
+ // handle and duplicate it into the client process with this helper method.
+ // Returns INVALID_HANDLE_VALUE on failure. The process must have been opened
+ // with the PROCESS_DUP_HANDLE access right.
+ static HANDLE DuplicatePipeToClientProcess(const wchar_t* pipe_name,
+ HANDLE hProcess);
+
private:
// Connects to the appropriate pipe and sets the pipe handle state.
//
@@ -127,6 +139,10 @@ class CrashGenerationClient {
// Pipe name to use to talk to server.
std::wstring pipe_name_;
+ // Pipe handle duplicated from server process. Only valid before
+ // Register is called.
+ HANDLE pipe_handle_;
+
// Custom client information
CustomClientInfo custom_info_;
diff --git a/src/client/windows/handler/exception_handler.cc b/src/client/windows/handler/exception_handler.cc
index 386d8557..9ede97f0 100755
--- a/src/client/windows/handler/exception_handler.cc
+++ b/src/client/windows/handler/exception_handler.cc
@@ -69,9 +69,29 @@ ExceptionHandler::ExceptionHandler(const wstring& dump_path,
handler_types,
dump_type,
pipe_name,
+ NULL,
custom_info);
}
+ExceptionHandler::ExceptionHandler(const wstring& dump_path,
+ FilterCallback filter,
+ MinidumpCallback callback,
+ void* callback_context,
+ int handler_types,
+ MINIDUMP_TYPE dump_type,
+ HANDLE pipe_handle,
+ const CustomClientInfo* custom_info) {
+ Initialize(dump_path,
+ filter,
+ callback,
+ callback_context,
+ handler_types,
+ dump_type,
+ NULL,
+ pipe_handle,
+ custom_info);
+}
+
ExceptionHandler::ExceptionHandler(const wstring &dump_path,
FilterCallback filter,
MinidumpCallback callback,
@@ -84,6 +104,7 @@ ExceptionHandler::ExceptionHandler(const wstring &dump_path,
handler_types,
MiniDumpNormal,
NULL,
+ NULL,
NULL);
}
@@ -94,6 +115,7 @@ void ExceptionHandler::Initialize(const wstring& dump_path,
int handler_types,
MINIDUMP_TYPE dump_type,
const wchar_t* pipe_name,
+ HANDLE pipe_handle,
const CustomClientInfo* custom_info) {
LONG instance_count = InterlockedIncrement(&instance_count_);
filter_ = filter;
@@ -123,12 +145,22 @@ void ExceptionHandler::Initialize(const wstring& dump_path,
handler_return_value_ = false;
handle_debug_exceptions_ = false;
- // Attempt to use out-of-process if user has specified pipe name.
- if (pipe_name != NULL) {
- scoped_ptr<CrashGenerationClient> client(
+ // Attempt to use out-of-process if user has specified a pipe.
+ if (pipe_name != NULL || pipe_handle != NULL) {
+ assert(!(pipe_name && pipe_handle));
+
+ scoped_ptr<CrashGenerationClient> client;
+ if (pipe_name) {
+ client.reset(
new CrashGenerationClient(pipe_name,
dump_type_,
custom_info));
+ } else {
+ client.reset(
+ new CrashGenerationClient(pipe_handle,
+ dump_type_,
+ custom_info));
+ }
// If successful in registering with the monitoring process,
// there is no need to setup in-process crash generation.
diff --git a/src/client/windows/handler/exception_handler.h b/src/client/windows/handler/exception_handler.h
index ce3bcb0d..38c2c3ca 100644
--- a/src/client/windows/handler/exception_handler.h
+++ b/src/client/windows/handler/exception_handler.h
@@ -164,7 +164,7 @@ class ExceptionHandler {
void* callback_context,
int handler_types);
- // Creates a new ExcetpionHandler instance that can attempt to perform
+ // Creates a new ExceptionHandler instance that can attempt to perform
// out-of-process dump generation if pipe_name is not NULL. If pipe_name is
// NULL, or if out-of-process dump generation registration step fails,
// in-process dump generation will be used. This also allows specifying
@@ -178,6 +178,17 @@ class ExceptionHandler {
const wchar_t* pipe_name,
const CustomClientInfo* custom_info);
+ // As above, creates a new ExceptionHandler instance to perform
+ // out-of-process dump generation if the given pipe_handle is not NULL.
+ ExceptionHandler(const wstring& dump_path,
+ FilterCallback filter,
+ MinidumpCallback callback,
+ void* callback_context,
+ int handler_types,
+ MINIDUMP_TYPE dump_type,
+ HANDLE pipe_handle,
+ const CustomClientInfo* custom_info);
+
~ExceptionHandler();
// Get and set the minidump path.
@@ -235,6 +246,7 @@ class ExceptionHandler {
int handler_types,
MINIDUMP_TYPE dump_type,
const wchar_t* pipe_name,
+ HANDLE pipe_handle,
const CustomClientInfo* custom_info);
// Function pointer type for MiniDumpWriteDump, which is looked up