| // Copyright 2017 The Cobalt Authors. All Rights Reserved. |
| // |
| // 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 "starboard/system.h" |
| |
| #include <sys/utsname.h> |
| |
| #include <cstring> |
| #include <memory> |
| #include <string> |
| |
| #include "starboard/common/log.h" |
| #include "starboard/common/string.h" |
| #include "starboard/shared/environment.h" |
| |
| namespace { |
| |
| const char* kBrandName = "Raspberry Pi Foundation"; |
| |
| const char* kModelRevision = "Rev"; |
| |
| const char* kFriendlyName = "Raspberry Pi"; |
| |
| // Read device model from /proc/device-tree/model |
| std::string GetModelName() { |
| const char* file_path = "/proc/device-tree/model"; |
| // Size of the raw data |
| size_t file_data_size; |
| |
| file_data_size = 0; |
| // Get the size of the file by reading it until the end. This is |
| // required because files under /proc do not always return a valid size |
| // when using fseek(0, SEEK_END) + ftell(). Nor can the be mmap()-ed. |
| FILE* file = fopen(file_path, "r"); |
| if (file != nullptr) { |
| for (;;) { |
| char file_buffer[256]; |
| size_t data_size = fread(file_buffer, 1, sizeof(file_buffer), file); |
| if (data_size == 0) { |
| break; |
| } |
| file_data_size += data_size; |
| } |
| fclose(file); |
| } |
| |
| const size_t kFileSizeCap = 1000; |
| if (file_data_size > kFileSizeCap) { |
| SB_LOG(ERROR) |
| << "File too large: /proc/device-tree/model is larger than 1KB."; |
| return ""; |
| } |
| |
| // Read the contents of the /proc/device-tree/model file. |
| const size_t kFileDataSize = file_data_size + 1; |
| char file_data[kFileDataSize]; |
| char* file_data_ptr = file_data; |
| memset(file_data_ptr, 0, file_data_size + 1); |
| |
| file = fopen(file_path, "r"); |
| if (file != nullptr) { |
| for (size_t offset = 0; offset < file_data_size;) { |
| size_t data_size = |
| fread(file_data_ptr + offset, 1, file_data_size - offset, file); |
| if (data_size == 0) { |
| break; |
| } |
| offset += data_size; |
| } |
| fclose(file); |
| } |
| |
| // Zero-terminate the first line of the file because the model name is in the |
| // first line |
| for (int i = 0; i < file_data_size; i++) { |
| if (file_data_ptr[i] == '\n') { |
| file_data_ptr[i] = '\0'; |
| break; |
| } |
| } |
| |
| // Zero-terminate the file data |
| file_data_ptr[file_data_size] = '\0'; |
| |
| // Get Model name |
| std::string model_string(const_cast<char*>(file_data)); |
| std::string model_name; |
| |
| // Find the revision number of the model name and remove it if present |
| int model_rev_pos = model_string.find(kModelRevision); |
| if (model_rev_pos != std::string::npos) { |
| model_name = model_string.substr(0, model_rev_pos); |
| } |
| |
| // Trim trailing spaces |
| size_t end = model_name.find_last_not_of(" \t"); |
| if (end != std::string::npos) { |
| return model_name.substr(0, end + 1); |
| } else { |
| return ""; |
| } |
| } |
| |
| bool CopyStringAndTestIfSuccess(char* out_value, |
| int value_length, |
| const char* from_value) { |
| if (strlen(from_value) + 1 > value_length) |
| return false; |
| starboard::strlcpy(out_value, from_value, value_length); |
| return true; |
| } |
| |
| } // namespace |
| |
| bool SbSystemGetProperty(SbSystemPropertyId property_id, |
| char* out_value, |
| int value_length) { |
| if (!out_value || !value_length) { |
| return false; |
| } |
| |
| switch (property_id) { |
| case kSbSystemPropertyBrandName: |
| return CopyStringAndTestIfSuccess(out_value, value_length, kBrandName); |
| |
| case kSbSystemPropertyModelName: |
| return CopyStringAndTestIfSuccess(out_value, value_length, |
| GetModelName().c_str()); |
| |
| case kSbSystemPropertyChipsetModelNumber: |
| case kSbSystemPropertyFirmwareVersion: |
| case kSbSystemPropertyModelYear: |
| case kSbSystemPropertySystemIntegratorName: |
| case kSbSystemPropertySpeechApiKey: |
| return false; |
| |
| #if SB_API_VERSION >= 14 |
| // Implementation provided for testing purposes only |
| case kSbSystemPropertyAdvertisingId: |
| return CopyStringAndTestIfSuccess( |
| out_value, value_length, |
| starboard::GetEnvironment("COBALT_ADVERTISING_ID").c_str()); |
| case kSbSystemPropertyLimitAdTracking: |
| return CopyStringAndTestIfSuccess( |
| out_value, value_length, |
| starboard::GetEnvironment("COBALT_LIMIT_AD_TRACKING").c_str()); |
| #endif |
| |
| case kSbSystemPropertyFriendlyName: |
| return CopyStringAndTestIfSuccess(out_value, value_length, kFriendlyName); |
| |
| case kSbSystemPropertyPlatformName: { |
| return CopyStringAndTestIfSuccess(out_value, value_length, |
| "X11; Linux armv7l"); |
| } |
| |
| default: |
| SB_DLOG(WARNING) << __FUNCTION__ |
| << ": Unrecognized property: " << property_id; |
| break; |
| } |
| |
| return false; |
| } |