66 lines
1.9 KiB
Text
66 lines
1.9 KiB
Text
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// Copyright (c) 2021 Slack Technologies, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "shell/common/asar/archive.h"
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#include <CommonCrypto/CommonDigest.h>
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#include <CoreFoundation/CoreFoundation.h>
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#include <Foundation/Foundation.h>
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#include <iomanip>
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#include <string>
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#include "base/logging.h"
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#include "base/mac/bundle_locations.h"
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#include "base/mac/foundation_util.h"
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#include "base/mac/scoped_cftyperef.h"
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#include "base/strings/sys_string_conversions.h"
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#include "shell/common/asar/asar_util.h"
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namespace asar {
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absl::optional<base::FilePath> Archive::RelativePath() const {
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base::FilePath bundle_path = base::mac::MainBundlePath().Append("Contents");
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base::FilePath relative_path;
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if (!bundle_path.AppendRelativePath(path_, &relative_path))
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return absl::nullopt;
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return relative_path;
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}
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absl::optional<IntegrityPayload> Archive::HeaderIntegrity() const {
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absl::optional<base::FilePath> relative_path = RelativePath();
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// Callers should have already asserted this
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CHECK(relative_path.has_value());
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NSDictionary* integrity = [[NSBundle mainBundle]
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objectForInfoDictionaryKey:@"ElectronAsarIntegrity"];
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// Integrity not provided
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if (!integrity)
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return absl::nullopt;
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NSString* ns_relative_path =
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base::mac::FilePathToNSString(relative_path.value());
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NSDictionary* integrity_payload = [integrity objectForKey:ns_relative_path];
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if (!integrity_payload)
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return absl::nullopt;
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NSString* algorithm = [integrity_payload objectForKey:@"algorithm"];
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NSString* hash = [integrity_payload objectForKey:@"hash"];
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if (algorithm && hash && [algorithm isEqualToString:@"SHA256"]) {
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IntegrityPayload header_integrity;
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header_integrity.algorithm = HashAlgorithm::SHA256;
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header_integrity.hash = base::SysNSStringToUTF8(hash);
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return header_integrity;
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}
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return absl::nullopt;
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}
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} // namespace asar
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