chrome/tools/safe_browsing/sb_sigutil.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4 //
   5 // Simple tool that uses the SignatureUtil class to extract signature
   6 // information from an executable.  The output is an encoded
   7 // ClientDownloadRequest_SignatureInfo protocol buffer.
   8 //
   9 // Example usage: sb_sigutil --executable=blah.exe --output=siginfo.pb
  10
  11 #include <string>
  12
  13 #include "base/command_line.h"
  14 #include "base/files/file_path.h"
  15 #include "base/files/file_util.h"
  16 #include "base/logging.h"
  17 #include "base/memory/ref_counted.h"
  18 #include "chrome/common/safe_browsing/binary_feature_extractor.h"
  19 #include "chrome/common/safe_browsing/csd.pb.h"
  20
  21 // Command-line switch for the executable to extract a signature from.
  22 static const char kExecutable[] = "executable";
  23
  24 // File to write the output protocol buffer to.
  25 static const char kOutputFile[] = "output";
  26
  27 int main(int argc, char* argv[]) {
  28   base::CommandLine::Init(argc, argv);
  29
  30   base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
  31   if (!cmd_line->HasSwitch(kExecutable)) {
  32     LOG(ERROR) << "Must specify executable to open with --executable";
  33     return 1;
  34   }
  35   if (!cmd_line->HasSwitch(kOutputFile)) {
  36     LOG(ERROR) << "Must specify output file with --output";
  37     return 1;
  38   }
  39
  40   scoped_refptr<safe_browsing::BinaryFeatureExtractor> extractor(
  41       new safe_browsing::BinaryFeatureExtractor());
  42   safe_browsing::ClientDownloadRequest_SignatureInfo signature_info;
  43   extractor->CheckSignature(cmd_line->GetSwitchValuePath(kExecutable),
  44                             &signature_info);
  45
  46   std::string serialized_info = signature_info.SerializeAsString();
  47   int bytes_written = base::WriteFile(
  48       cmd_line->GetSwitchValuePath(kOutputFile),
  49       serialized_info.data(),
  50       serialized_info.size());
  51   if (bytes_written != static_cast<int>(serialized_info.size())) {
  52     LOG(ERROR) << "Error writing output file";
  53     return 1;
  54   }
  55
  56   return 0;
  57 }