| // Copyright 2015 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 <linux/limits.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <cstring> |
| #include <vector> |
| |
| #include "starboard/common/log.h" |
| #include "starboard/common/string.h" |
| #include "starboard/configuration_constants.h" |
| #include "starboard/directory.h" |
| #if SB_IS(EVERGREEN_COMPATIBLE) |
| #include "starboard/elf_loader/evergreen_config.h" |
| #endif |
| #include "starboard/user.h" |
| |
| namespace { |
| const int kMaxPathSize = kSbFileMaxPath; |
| |
| // Gets the path to the cache directory, using the user's home directory. |
| bool GetCacheDirectory(char* out_path, int path_size) { |
| std::vector<char> home_path(kMaxPathSize + 1); |
| if (!SbUserGetProperty(SbUserGetCurrent(), kSbUserPropertyHomeDirectory, |
| home_path.data(), kMaxPathSize)) { |
| return false; |
| } |
| int result = |
| SbStringFormatF(out_path, path_size, "%s/.cache", home_path.data()); |
| if (result < 0 || result >= path_size) { |
| out_path[0] = '\0'; |
| return false; |
| } |
| return SbDirectoryCreate(out_path); |
| } |
| |
| // Gets the path to the storage directory, using the user's home directory. |
| bool GetStorageDirectory(char* out_path, int path_size) { |
| std::vector<char> home_path(kMaxPathSize + 1); |
| if (!SbUserGetProperty(SbUserGetCurrent(), kSbUserPropertyHomeDirectory, |
| home_path.data(), kMaxPathSize)) { |
| return false; |
| } |
| int result = SbStringFormatF(out_path, path_size, "%s/.cobalt_storage", |
| home_path.data()); |
| if (result < 0 || result >= path_size) { |
| out_path[0] = '\0'; |
| return false; |
| } |
| return SbDirectoryCreate(out_path); |
| } |
| |
| // Places up to |path_size| - 1 characters of the path to the current |
| // executable in |out_path|, ensuring it is NULL-terminated. Returns success |
| // status. The result being greater than |path_size| - 1 characters is a |
| // failure. |out_path| may be written to in unsuccessful cases. |
| bool GetExecutablePath(char* out_path, int path_size) { |
| if (path_size < 1) { |
| return false; |
| } |
| |
| std::vector<char> path(kMaxPathSize + 1); |
| ssize_t bytes_read = readlink("/proc/self/exe", path.data(), kMaxPathSize); |
| if (bytes_read < 1) { |
| return false; |
| } |
| |
| path[bytes_read] = '\0'; |
| if (bytes_read >= path_size) { |
| return false; |
| } |
| |
| starboard::strlcpy(out_path, path.data(), path_size); |
| return true; |
| } |
| |
| #if SB_IS(EVERGREEN_COMPATIBLE) |
| // May override the content path if there is EvergreenConfig published. |
| // The override allows for switching to different content paths based |
| // on the Evergreen binary executed. |
| // Returns false if it failed. |
| bool GetEvergreenContentPathOverride(char* out_path, int path_size) { |
| const starboard::elf_loader::EvergreenConfig* evergreen_config = |
| starboard::elf_loader::EvergreenConfig::GetInstance(); |
| if (!evergreen_config) { |
| return true; |
| } |
| if (evergreen_config->content_path_.empty()) { |
| return true; |
| } |
| |
| if (starboard::strlcpy(out_path, evergreen_config->content_path_.c_str(), |
| path_size) >= path_size) { |
| return false; |
| } |
| return true; |
| } |
| #endif |
| |
| // Places up to |path_size| - 1 characters of the path to the directory |
| // containing the current executable in |out_path|, ensuring it is |
| // NULL-terminated. Returns success status. The result being greater than |
| // |path_size| - 1 characters is a failure. |out_path| may be written to in |
| // unsuccessful cases. |
| bool GetExecutableDirectory(char* out_path, int path_size) { |
| if (!GetExecutablePath(out_path, path_size)) { |
| return false; |
| } |
| |
| char* last_slash = const_cast<char*>(strrchr(out_path, '/')); |
| if (!last_slash) { |
| return false; |
| } |
| |
| *last_slash = '\0'; |
| return true; |
| } |
| |
| // Gets only the name portion of the current executable. |
| bool GetExecutableName(char* out_path, int path_size) { |
| std::vector<char> path(kMaxPathSize, 0); |
| if (!GetExecutablePath(path.data(), kMaxPathSize)) { |
| return false; |
| } |
| |
| const char* last_slash = strrchr(path.data(), '/'); |
| if (starboard::strlcpy(out_path, last_slash + 1, path_size) >= path_size) { |
| return false; |
| } |
| return true; |
| } |
| |
| // Gets the path to a temporary directory that is unique to this process. |
| bool GetTemporaryDirectory(char* out_path, int path_size) { |
| std::vector<char> binary_name(kMaxPathSize, 0); |
| if (!GetExecutableName(binary_name.data(), kMaxPathSize)) { |
| return false; |
| } |
| |
| int result = SbStringFormatF(out_path, path_size, "/tmp/%s-%d", |
| binary_name.data(), static_cast<int>(getpid())); |
| if (result < 0 || result >= path_size) { |
| out_path[0] = '\0'; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // Gets the path to the content directory. |
| bool GetContentDirectory(char* out_path, int path_size) { |
| if (!GetExecutableDirectory(out_path, path_size)) { |
| return false; |
| } |
| if (starboard::strlcat(out_path, "/content", path_size) >= path_size) { |
| return false; |
| } |
| return true; |
| } |
| } // namespace |
| |
| bool SbSystemGetPath(SbSystemPathId path_id, char* out_path, int path_size) { |
| if (!out_path || !path_size) { |
| return false; |
| } |
| |
| const int kPathSize = kSbFileMaxPath; |
| std::vector<char> path(kPathSize); |
| path[0] = '\0'; |
| |
| switch (path_id) { |
| case kSbSystemPathContentDirectory: |
| if (!GetContentDirectory(path.data(), kPathSize)) { |
| return false; |
| } |
| #if SB_IS(EVERGREEN_COMPATIBLE) |
| if (!GetEvergreenContentPathOverride(path.data(), kPathSize)) { |
| return false; |
| } |
| |
| #endif |
| break; |
| |
| case kSbSystemPathCacheDirectory: |
| if (!GetCacheDirectory(path.data(), kPathSize)) { |
| return false; |
| } |
| if (starboard::strlcat(path.data(), "/cobalt", kPathSize) >= kPathSize) { |
| return false; |
| } |
| if (!SbDirectoryCreate(path.data())) { |
| return false; |
| } |
| break; |
| |
| case kSbSystemPathDebugOutputDirectory: |
| if (!SbSystemGetPath(kSbSystemPathTempDirectory, path.data(), |
| kPathSize)) { |
| return false; |
| } |
| if (starboard::strlcat(path.data(), "/log", kPathSize) >= kPathSize) { |
| return false; |
| } |
| SbDirectoryCreate(path.data()); |
| break; |
| |
| case kSbSystemPathTempDirectory: |
| if (!GetTemporaryDirectory(path.data(), kPathSize)) { |
| return false; |
| } |
| SbDirectoryCreate(path.data()); |
| break; |
| |
| #if SB_API_VERSION < 14 |
| case kSbSystemPathTestOutputDirectory: |
| return SbSystemGetPath(kSbSystemPathDebugOutputDirectory, out_path, |
| path_size); |
| #endif // #if SB_API_VERSION < 14 |
| |
| case kSbSystemPathExecutableFile: |
| return GetExecutablePath(out_path, path_size); |
| |
| case kSbSystemPathFontConfigurationDirectory: |
| case kSbSystemPathFontDirectory: |
| #if SB_IS(EVERGREEN_COMPATIBLE) |
| if (!GetContentDirectory(path.data(), kPathSize)) { |
| return false; |
| } |
| if (starboard::strlcat(path.data(), "/fonts", kPathSize) >= kPathSize) { |
| return false; |
| } |
| break; |
| #else |
| return false; |
| #endif |
| |
| case kSbSystemPathStorageDirectory: |
| if (!GetStorageDirectory(path.data(), kPathSize)) { |
| return false; |
| } |
| break; |
| |
| default: |
| SB_NOTIMPLEMENTED() << "SbSystemGetPath not implemented for " << path_id; |
| return false; |
| } |
| |
| int length = strlen(path.data()); |
| if (length < 1 || length > path_size) { |
| return false; |
| } |
| |
| starboard::strlcpy(out_path, path.data(), path_size); |
| return true; |
| } |