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// Copyright 2024 Huawei Cloud Computing Technology Co., Ltd.
//
// 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.
#ifndef BOOTSTRAP_BUILD_TOOL
#include "src/buildtool/main/archive.hpp"
#ifdef __unix__
#include <unistd.h>
#else
#error "Non-unix is not supported yet"
#endif
#include <functional>
#include <map>
#include <memory>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>
#include "src/buildtool/common/artifact_digest.hpp"
#include "src/buildtool/common/artifact_digest_factory.hpp"
#include "src/buildtool/file_system/git_repo.hpp"
#include "src/buildtool/file_system/object_type.hpp"
#include "src/buildtool/logging/log_level.hpp"
#include "src/buildtool/logging/logger.hpp"
#include "src/utils/cpp/expected.hpp"
#include "src/utils/cpp/hex_string.hpp"
extern "C" {
#include <archive.h>
#include <archive_entry.h>
}
namespace {
void archive_write_closer(archive* a) {
if (a != nullptr) {
archive_write_close(a);
archive_write_free(a);
}
}
void archive_entry_cleanup(archive_entry* entry) {
if (entry != nullptr) {
archive_entry_free(entry);
}
}
auto add_to_archive(archive* archive,
IExecutionApi const& api,
const Artifact::ObjectInfo& artifact,
const std::filesystem::path& location) -> bool {
auto constexpr kExecutablePerm = 0555;
auto constexpr kFilePerm = 0444;
auto constexpr kDefaultPerm = 07777;
auto payload = api.RetrieveToMemory(artifact);
if (not payload) {
Logger::Log(LogLevel::Error,
"Failed to retrieve artifact {}",
artifact.ToString());
return false;
}
switch (artifact.type) {
case ObjectType::File:
case ObjectType::Executable: {
std::unique_ptr<archive_entry, decltype(&archive_entry_cleanup)>
entry{archive_entry_new(), archive_entry_cleanup};
archive_entry_set_pathname(entry.get(), location.string().c_str());
archive_entry_set_size(entry.get(),
static_cast<la_int64_t>(payload->size()));
archive_entry_set_filetype(entry.get(), AE_IFREG);
archive_entry_set_perm(entry.get(),
artifact.type == ObjectType::Executable
? kExecutablePerm
: kFilePerm);
archive_write_header(archive, entry.get());
archive_write_data(archive, payload->c_str(), payload->size());
} break;
case ObjectType::Symlink: {
std::unique_ptr<archive_entry, decltype(&archive_entry_cleanup)>
entry{archive_entry_new(), archive_entry_cleanup};
archive_entry_set_pathname(entry.get(), location.string().c_str());
archive_entry_set_size(entry.get(),
static_cast<la_int64_t>(payload->size()));
archive_entry_set_filetype(entry.get(), AE_IFLNK);
archive_entry_set_symlink(entry.get(), payload->c_str());
archive_entry_set_perm(entry.get(), kDefaultPerm);
archive_write_header(archive, entry.get());
archive_write_data(archive, payload->c_str(), payload->size());
} break;
case ObjectType::Tree: {
// avoid creating empty unnamed folder for the initial call
if (not location.empty()) {
std::unique_ptr<archive_entry, decltype(&archive_entry_cleanup)>
entry{archive_entry_new(), archive_entry_cleanup};
archive_entry_set_pathname(entry.get(),
location.string().c_str());
archive_entry_set_size(entry.get(), 0U);
archive_entry_set_filetype(entry.get(), AE_IFDIR);
archive_entry_set_perm(entry.get(), kDefaultPerm);
archive_write_header(archive, entry.get());
}
auto git_tree = GitRepo::ReadTreeData(
*payload,
artifact.digest.hash(),
[](auto const& /*unused*/) { return true; },
/*is_hex_id=*/true);
if (not git_tree) {
Logger::Log(LogLevel::Error,
"Failed to parse {} as git tree for path {}",
artifact.ToString(),
location.string());
return false;
}
// Reorder entries to be keyed and sorted by name
std::map<std::string, Artifact::ObjectInfo> tree{};
for (auto const& [hash, entries] : *git_tree) {
auto hex_hash = ToHexString(hash);
for (auto const& entry : entries) {
auto digest =
ArtifactDigestFactory::Create(api.GetHashType(),
hex_hash,
0,
IsTreeObject(entry.type));
if (not digest) {
return false;
}
tree[entry.name] =
Artifact::ObjectInfo{.digest = *std::move(digest),
.type = entry.type,
.failed = false};
}
}
for (auto const& [name, obj] : tree) {
if (not add_to_archive(archive, api, obj, location / name)) {
return false;
}
}
} break;
}
return true;
}
} // namespace
[[nodiscard]] auto GenerateArchive(
IExecutionApi const& api,
const Artifact::ObjectInfo& artifact,
const std::optional<std::filesystem::path>& output_path) -> bool {
constexpr int kTarBlockSize = 512;
std::unique_ptr<archive, decltype(&archive_write_closer)> archive{
archive_write_new(), archive_write_closer};
if (archive == nullptr) {
Logger::Log(LogLevel::Error,
"Internal error: Call to archive_write_new() failed");
return false;
}
if (archive_write_set_format_pax_restricted(archive.get()) != ARCHIVE_OK) {
Logger::Log(LogLevel::Error,
"Internal error: Call to "
"archive_write_set_format_pax_restriced() failed");
return false;
}
if (archive_write_set_bytes_per_block(archive.get(), kTarBlockSize) !=
ARCHIVE_OK) {
Logger::Log(LogLevel::Error,
"Internal error: Call to "
"archive_write_set_bytes_per_block() failed");
return false;
}
if (output_path) {
if (archive_write_open_filename(
archive.get(), output_path->string().c_str()) != ARCHIVE_OK) {
Logger::Log(LogLevel::Error,
"Failed to open archive for writing at {}",
output_path->string());
return false;
}
}
else {
if (archive_write_open_fd(archive.get(), STDOUT_FILENO) != ARCHIVE_OK) {
Logger::Log(LogLevel::Error,
"Failed to open stdout for writing archive to");
return false;
}
}
if (not add_to_archive(
archive.get(), api, artifact, std::filesystem::path{""})) {
return false;
}
if (output_path) {
Logger::Log(LogLevel::Info,
"Archive of {} was installed to {}",
artifact.ToString(),
output_path->string());
}
return true;
}
#endif
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