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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// This file contains the archive analyzer analysis implementation for download
// protection, which runs in a sandboxed utility process.
#ifndef CHROME_COMMON_SAFE_BROWSING_ARCHIVE_ANALYZER_RESULTS_H_
#define CHROME_COMMON_SAFE_BROWSING_ARCHIVE_ANALYZER_RESULTS_H_
#include <vector>
#include "base/files/file_path.h"
#include "build/build_config.h"
#include "components/safe_browsing/content/common/proto/download_file_types.pb.h"
#include "components/safe_browsing/core/common/proto/csd.pb.h"
namespace base {
class File;
}
namespace safe_browsing {
// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
enum class ArchiveAnalysisResult {
kUnknown = 0, // kUnknown indicates a case where we don't have a specific
// reason, but parsing failed. This bucket will be broken into
// more buckets in the future, as we identify more reasons for
// analysis failure.
kUnspecified = 1, // kUnspecified indicates that the analysis code provided
// no reason at all. Logging this value indicates a bug.
kValid = 2,
kTooLarge = 3,
kTimeout = 4,
kFailedToOpen = 5,
kFailedToOpenTempFile = 6,
kDmgNoPartitions = 7,
kFailedDuringIteration = 8,
kDiskError = 9,
kMaxValue = kDiskError,
};
struct EncryptionInfo {
// True if the metadata is encrypted or there is at least one encrypted entry
// in the archive.
bool is_encrypted = false;
// True if the metadata of the top-level archive is encrypted or at
// least one the files contained in the top-level archive are encrypted.
bool is_top_level_encrypted = false;
enum PasswordStatus {
kUnknown = 0,
kKnownIncorrect = 1,
kKnownCorrect = 2,
kMaxValue = kKnownCorrect,
};
// Set to kKnownCorrect if the archive unpacks correctly with the given
// password.
PasswordStatus password_status = kUnknown;
};
struct ArchiveAnalyzerResults {
bool success = false;
bool has_executable = false;
bool has_archive = false;
google::protobuf::RepeatedPtrField<ClientDownloadRequest_ArchivedBinary>
archived_binary;
std::vector<base::FilePath> archived_archive_filenames;
#if BUILDFLAG(IS_MAC)
std::vector<uint8_t> signature_blob;
google::protobuf::RepeatedPtrField<
ClientDownloadRequest_DetachedCodeSignature>
detached_code_signatures;
#endif // BUILDFLAG(IS_MAC)
int file_count = 0;
int directory_count = 0;
ArchiveAnalysisResult analysis_result = ArchiveAnalysisResult::kUnspecified;
// TODO(crbug.com/40923880): Populate this information for RAR archives as
// well.
EncryptionInfo encryption_info;
ArchiveAnalyzerResults();
ArchiveAnalyzerResults(const ArchiveAnalyzerResults& other);
~ArchiveAnalyzerResults();
};
// Updates `results` with the results of inspecting `file`, given that it will
// be extracted to `path`. Due to complications with the utility process sandbox
// (see https://crbug.com/944633), the file inspection is limited to the first
// `file_length` bytes of `file`.
void UpdateArchiveAnalyzerResultsWithFile(base::FilePath path,
base::File* file,
int file_length,
bool is_encrypted,
bool is_directory,
bool contents_valid,
bool is_top_level,
ArchiveAnalyzerResults* results);
// Returns the `DownloadFileType_InspectionType` of the file path.
safe_browsing::DownloadFileType_InspectionType GetFileType(base::FilePath path);
// Update the `archived_binary` with the string value path name.
void SetNameForContainedFile(
const base::FilePath& path,
ClientDownloadRequest::ArchivedBinary* archived_binary);
// Update the `archived_binary` with the `file_length` and the
// `mutable_digests` fields
void SetLengthAndDigestForContainedFile(
base::File* temp_file,
int file_length,
ClientDownloadRequest::ArchivedBinary* archived_binary);
} // namespace safe_browsing
#endif // CHROME_COMMON_SAFE_BROWSING_ARCHIVE_ANALYZER_RESULTS_H_
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