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| 1 // Copyright 2015 The Crashpad Authors. All rights reserved. |
| 2 // |
| 3 // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 // you may not use this file except in compliance with the License. |
| 5 // You may obtain a copy of the License at |
| 6 // |
| 7 // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 // |
| 9 // Unless required by applicable law or agreed to in writing, software |
| 10 // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 // See the License for the specific language governing permissions and |
| 13 // limitations under the License. |
| 14 |
| 15 #include "util/win/registration_protocol_win.h" |
| 16 |
| 17 #include <windows.h> |
| 18 |
| 19 #include "base/logging.h" |
| 20 |
| 21 namespace crashpad { |
| 22 |
| 23 bool SendToCrashHandlerServer(const base::string16& pipe_name, |
| 24 const crashpad::ClientToServerMessage& message, |
| 25 crashpad::ServerToClientMessage* response) { |
| 26 int tries = 5; |
| 27 while (tries > 0) { |
| 28 HANDLE pipe = CreateFile(pipe_name.c_str(), |
| 29 GENERIC_READ | GENERIC_WRITE, |
| 30 0, |
| 31 nullptr, |
| 32 OPEN_EXISTING, |
| 33 SECURITY_SQOS_PRESENT | SECURITY_IDENTIFICATION, |
| 34 nullptr); |
| 35 if (pipe == INVALID_HANDLE_VALUE) { |
| 36 Sleep(10); |
| 37 --tries; |
| 38 continue; |
| 39 } |
| 40 DWORD mode = PIPE_READMODE_MESSAGE; |
| 41 if (!SetNamedPipeHandleState(pipe, &mode, nullptr, nullptr)) { |
| 42 PLOG(ERROR) << "SetNamedPipeHandleState"; |
| 43 return false; |
| 44 } |
| 45 DWORD bytes_read = 0; |
| 46 BOOL result = TransactNamedPipe( |
| 47 pipe, |
| 48 // This is [in], but is incorrectly declared non-const. |
| 49 const_cast<crashpad::ClientToServerMessage*>(&message), |
| 50 sizeof(message), |
| 51 response, |
| 52 sizeof(*response), |
| 53 &bytes_read, |
| 54 nullptr); |
| 55 if (!result) { |
| 56 PLOG(ERROR) << "TransactNamedPipe"; |
| 57 return false; |
| 58 } |
| 59 if (bytes_read != sizeof(*response)) { |
| 60 LOG(ERROR) << "TransactNamedPipe read incorrect number of bytes"; |
| 61 return false; |
| 62 } |
| 63 return true; |
| 64 } |
| 65 |
| 66 LOG(ERROR) << "failed to connect after retrying"; |
| 67 return false; |
| 68 } |
| 69 |
| 70 } // namespace crashpad |
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