mock_nacl_gdb.cc revision 7d4cd473f85ac64c3747c96c277f9e506a0d2246 
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/file_util.h"
11#include "base/logging.h"
12#include "base/memory/scoped_ptr.h"
13#include "base/process_util.h"
14
15static const char kEvalCommand[] = "--eval-command";
16static const char kCommand[] = "--command";
17static const char kNaClIrt[] = "nacl-irt \"";
18static const char kPass[] = "PASS";
19static const char kAttach[] = "target remote :4014";
20
21int main(int argc, char** argv) {
22  scoped_ptr<base::Environment> env(base::Environment::Create());
23  std::string mock_nacl_gdb_file;
24  env->GetVar("MOCK_NACL_GDB", &mock_nacl_gdb_file);
25  CHECK_GE(argc, 5);
26  // First argument should be --eval-command.
27  CHECK_EQ(strcmp(argv[1], kEvalCommand), 0);
28  // Second argument should start with nacl-irt.
29  CHECK_GE(strlen(argv[2]), strlen(kNaClIrt));
30  CHECK_EQ(strncmp(argv[2], kNaClIrt, strlen(kNaClIrt)), 0);
31  char* irt_file_name = strdup(&argv[2][strlen(kNaClIrt)]);
32  CHECK_GE(strlen(irt_file_name), 1u);
33  // Remove closing quote.
34  irt_file_name[strlen(irt_file_name) - 1] = 0;
35  FILE* irt_file = fopen(irt_file_name, "r");
36  free(irt_file_name);
37  // nacl-irt parameter must be a file name.
38  PCHECK(irt_file);
39  fclose(irt_file);
40  CHECK_EQ(strcmp(argv[3], kEvalCommand), 0);
41  CHECK_EQ(strcmp(argv[4], kAttach), 0);
42  int i = 5;
43  // Skip additional --eval-command parameters.
44  while (i < argc) {
45    if (strcmp(argv[i], kEvalCommand) == 0) {
46      i += 2;
47      continue;
48    }
49    if (strcmp(argv[i], kCommand) == 0) {
50      // Command line shouldn't end with --command switch without value.
51      i += 2;
52      CHECK_LE(i, argc);
53      std::string nacl_gdb_script(argv[i - 1]);
54      file_util::WriteFile(base::FilePath::FromUTF8Unsafe(nacl_gdb_script),
55                           kPass, strlen(kPass));
56      continue;
57    }
58    // Unknown argument.
59    NOTREACHED() << "Invalid argument " << argv[i];
60  }
61  CHECK_EQ(i, argc);
62  file_util::WriteFile(base::FilePath::FromUTF8Unsafe(mock_nacl_gdb_file),
63                       kPass, strlen(kPass));
64  return 0;
65}
66