| // Copyright 2017 The Fuchsia Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "util/pem_util.h" |
| |
| #include <fstream> |
| #include <streambuf> |
| #include <string> |
| |
| #include "./logging.h" |
| |
| namespace cobalt { |
| namespace util { |
| |
| bool PemUtil::ReadTextFile(const std::string& file_path, |
| std::string* file_contents) { |
| if (!file_contents) { |
| return false; |
| } |
| if (file_path.empty()) { |
| return false; |
| } |
| std::ifstream stream(file_path, std::ifstream::in); |
| if (!stream.good()) { |
| // NOTE(rudominer) We use VLOG instead of LOG(ERROR) for any error messages |
| // in Cobalt that may occur on the client side. |
| VLOG(1) << "Unable to open file at " << file_path; |
| return false; |
| } |
| stream.seekg(0, std::ios::end); |
| if (!stream.good()) { |
| VLOG(1) << "Error reading PEM file at " << file_path; |
| return false; |
| } |
| // Don't try to read a file that's too big. |
| auto file_size = stream.tellg(); |
| if (!stream.good() || file_size <= 0 || file_size > kMaxFileSize) { |
| VLOG(1) << "Invalid file length for " << file_path; |
| return false; |
| } |
| file_contents->reserve(file_size); |
| |
| stream.seekg(0, std::ios::beg); |
| if (!stream.good()) { |
| VLOG(1) << "Error reading file at " << file_path; |
| return false; |
| } |
| file_contents->assign((std::istreambuf_iterator<char>(stream)), |
| std::istreambuf_iterator<char>()); |
| if (!stream.good()) { |
| VLOG(1) << "Error reading file at " << file_path; |
| return false; |
| } |
| VLOG(3) << "Successfully read file at " << file_path; |
| return true; |
| } |
| |
| } // namespace util |
| } // namespace cobalt |