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Issue 789693005: Add the crashpad_handler executable (Closed) Base URL: https://chromium.googlesource.com/crashpad/crashpad@master
Patch Set: https://codereview.chromium.org/820803003/ Created 6 years ago
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1 // Copyright 2014 The Crashpad Authors. All rights reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include <getopt.h>
16 #include <libgen.h>
17 #include <stdlib.h>
18
19 #include <string>
20
21 #include "tools/tool_support.h"
22 #include "handler/mac/exception_handler_server.h"
23 #include "util/mach/child_port_handshake.h"
24 #include "util/posix/close_stdio.h"
25 #include "util/stdlib/string_number_conversion.h"
26
27 namespace crashpad {
28 namespace {
29
30 void Usage(const std::string& me) {
31 fprintf(stderr,
32 "Usage: %s [OPTION]...\n"
33 "Crashpad's exception handler server.\n"
34 "\n"
35 " -h, --handshake-fd=FD establish communication with the client over FD\n"
Robert Sesek 2014/12/29 16:17:08 Since this is never meant to be run by users, I'm
36 " --help display this help and exit\n"
37 " --version output version information and exit\n",
38 me.c_str());
39 ToolSupport::UsageTail(me);
40 }
41
42 int HandlerMain(int argc, char* argv[]) {
43 const std::string me(basename(argv[0]));
44
45 enum OptionFlags {
46 // “Short” (single-character) options.
47 kOptionHandshakeFD = 'h',
48
49 // Long options without short equivalents.
50 kOptionLastChar = 255,
51
52 // Standard options.
53 kOptionHelp = -2,
54 kOptionVersion = -3,
55 };
56
57 struct {
58 int handshake_fd;
59 } options = {};
60 options.handshake_fd = -1;
61
62 const struct option long_options[] = {
63 {"handshake-fd", required_argument, nullptr, kOptionHandshakeFD},
64 {"help", no_argument, nullptr, kOptionHelp},
65 {"version", no_argument, nullptr, kOptionVersion},
66 {nullptr, 0, nullptr, 0},
67 };
68
69 int opt;
70 while ((opt = getopt_long(argc, argv, "h:", long_options, nullptr)) != -1) {
71 switch (opt) {
72 case kOptionHandshakeFD:
73 if (!StringToNumber(optarg, &options.handshake_fd) ||
74 options.handshake_fd < 0) {
75 ToolSupport::UsageHint(me, "-h requires a file descriptor");
76 return EXIT_FAILURE;
77 }
78 break;
79 case kOptionHelp:
80 Usage(me);
81 return EXIT_SUCCESS;
82 case kOptionVersion:
83 ToolSupport::Version(me);
84 return EXIT_SUCCESS;
85 default:
86 ToolSupport::UsageHint(me, nullptr);
87 return EXIT_FAILURE;
88 }
89 }
90 argc -= optind;
91 argv += optind;
92
93 if (options.handshake_fd < 0) {
Robert Sesek 2014/12/29 16:17:08 This is done above on line 74, too. This one is ne
Mark Mentovai 2014/12/29 17:08:07 Robert Sesek wrote:
94 ToolSupport::UsageHint(me, "-h is required");
95 return EXIT_FAILURE;
96 }
97
98 if (argc) {
99 ToolSupport::UsageHint(me, nullptr);
100 return EXIT_FAILURE;
101 }
102
103 CloseStdinAndStdout();
104
105 ExceptionHandlerServer exception_handler_server;
106
107 ChildPortHandshake::RunClient(options.handshake_fd,
108 exception_handler_server.receive_port(),
109 MACH_MSG_TYPE_MAKE_SEND);
110
111 exception_handler_server.Run();
112
113 return EXIT_SUCCESS;
114 }
115
116 } // namespace
117 } // namespace crashpad
118
119 int main(int argc, char* argv[]) {
120 return crashpad::HandlerMain(argc, argv);
121 }
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