chrome/browser/nacl_host/test/mock_nacl_gdb.cc

   1 // Copyright (c) 2012 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 #include <cstdio>
   6 #include <cstring>
   7
   8 #include "base/command_line.h"
   9 #include "base/environment.h"
  10 #include "base/files/file_util.h"
  11 #include "base/logging.h"
  12 #include "base/memory/scoped_ptr.h"
  13
  14 static const char kEvalCommand[] = "--eval-command";
  15 static const char kCommand[] = "--command";
  16 static const char kNaClIrt[] = "nacl-irt \"";
  17 static const char kPass[] = "PASS";
  18 static const char kAttach[] = "target remote :4014";
  19
  20 int main(int argc, char** argv) {
  21   scoped_ptr<base::Environment> env(base::Environment::Create());
  22   std::string mock_nacl_gdb_file;
  23   env->GetVar("MOCK_NACL_GDB", &mock_nacl_gdb_file);
  24   CHECK_GE(argc, 5);
  25   // First argument should be --eval-command.
  26   CHECK_EQ(strcmp(argv[1], kEvalCommand), 0);
  27   // Second argument should start with nacl-irt.
  28   CHECK_GE(strlen(argv[2]), strlen(kNaClIrt));
  29   CHECK_EQ(strncmp(argv[2], kNaClIrt, strlen(kNaClIrt)), 0);
  30   char* irt_file_name = strdup(&argv[2][strlen(kNaClIrt)]);
  31   CHECK_GE(strlen(irt_file_name), 1u);
  32   // Remove closing quote.
  33   irt_file_name[strlen(irt_file_name) - 1] = 0;
  34   FILE* irt_file = fopen(irt_file_name, "r");
  35   free(irt_file_name);
  36   // nacl-irt parameter must be a file name.
  37   PCHECK(irt_file);
  38   fclose(irt_file);
  39   CHECK_EQ(strcmp(argv[3], kEvalCommand), 0);
  40   CHECK_EQ(strcmp(argv[4], kAttach), 0);
  41   int i = 5;
  42   // Skip additional --eval-command parameters.
  43   while (i < argc) {
  44     if (strcmp(argv[i], kEvalCommand) == 0) {
  45       i += 2;
  46       continue;
  47     }
  48     if (strcmp(argv[i], kCommand) == 0) {
  49       // Command line shouldn't end with --command switch without value.
  50       i += 2;
  51       CHECK_LE(i, argc);
  52       std::string nacl_gdb_script(argv[i - 1]);
  53       base::WriteFile(base::FilePath::FromUTF8Unsafe(nacl_gdb_script),
  54                       kPass, strlen(kPass));
  55       continue;
  56     }
  57     // Unknown argument.
  58     NOTREACHED() << "Invalid argument " << argv[i];
  59   }
  60   CHECK_EQ(i, argc);
  61   base::WriteFile(base::FilePath::FromUTF8Unsafe(mock_nacl_gdb_file),
  62                   kPass, strlen(kPass));
  63   return 0;
  64 }