Refactor handler/main for Windows, implement CrashHandlerExceptionServer

handler/main.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include <getopt.h>
-#include <libgen.h>
 #include <stdlib.h>
 
 #include <map>
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/strings/utf_string_conversions.h"
+#include "build/build_config.h"
 #include "client/crash_report_database.h"
 #include "tools/tool_support.h"
 #include "handler/crash_report_upload_thread.h"
-#include "handler/mac/crash_report_exception_handler.h"
-#include "handler/mac/exception_handler_server.h"
-#include "util/mach/child_port_handshake.h"
-#include "util/posix/close_stdio.h"
 #include "util/stdlib/map_insert.h"
 #include "util/stdlib/string_number_conversion.h"
 #include "util/string/split_string.h"
 #include "util/synchronization/semaphore.h"
 
+#if defined(OS_MACOSX)
+#include <libgen.h>
+#include "handler/mac/crash_report_exception_handler.h"
+#include "handler/mac/exception_handler_server.h"
+#include "util/mach/child_port_handshake.h"
+#include "util/posix/close_stdio.h"
+#elif defined(OS_WIN)
+#include <windows.h>
+#include "handler/win/crash_report_exception_handler.h"
+#include "util/win/exception_handler_server.h"
+#endif  // OS_MACOSX
+
 namespace crashpad {
 namespace {
 
-void Usage(const std::string& me) {
+void Usage(const base::FilePath& me) {
   fprintf(stderr,
-"Usage: %s [OPTION]...\n"
+"Usage: %" PRFilePath " [OPTION]...\n"
 "Crashpad's exception handler server.\n"
 "\n"
 "      --annotation=KEY=VALUE  set a process annotation in each crash report\n"
 "      --database=PATH         store the crash report database at PATH\n"
+#if defined(OS_MACOSX)
 "      --handshake-fd=FD       establish communication with the client over FD\n"
+#elif defined(OS_WIN)
+"      --pipe-name=PIPE        communicate with the client over PIPE\n"
+#endif  // OS_MACOSX
 "      --url=URL               send crash reports to this Breakpad server URL,\n"
 "                              only if uploads are enabled for the database\n"
 "      --help                  display this help and exit\n"
 "      --version               output version information and exit\n",
-          me.c_str());
+          me.value().c_str());
   ToolSupport::UsageTail(me);
 }
 
 int HandlerMain(int argc, char* argv[]) {
-  const std::string me(basename(argv[0]));
+  const base::FilePath argv0(
+      ToolSupport::CommandLineArgumentToFilePathStringType(argv[0]));
+  const base::FilePath me(argv0.BaseName());
 
   enum OptionFlags {
     // Long options without short equivalents.
     kOptionLastChar = 255,
     kOptionAnnotation,
     kOptionDatabase,
+#if defined(OS_MACOSX)
     kOptionHandshakeFD,
+#elif defined(OS_WIN)
+    kOptionPipeName,
+#endif  // OS_MACOSX
     kOptionURL,
 
     // Standard options.
     kOptionHelp = -2,
     kOptionVersion = -3,
   };
 
   struct {
     std::map<std::string, std::string> annotations;
     std::string url;
     const char* database;
+#if defined(OS_MACOSX)
     int handshake_fd;
+#elif defined(OS_WIN)
+    std::string pipe_name;
+#endif
   } options = {};
+#if defined(OS_MACOSX)
   options.handshake_fd = -1;
+#endif
 
   const option long_options[] = {
       {"annotation", required_argument, nullptr, kOptionAnnotation},
       {"database", required_argument, nullptr, kOptionDatabase},
+#if defined(OS_MACOSX)
       {"handshake-fd", required_argument, nullptr, kOptionHandshakeFD},
+#elif defined(OS_WIN)
+      {"pipe-name", required_argument, nullptr, kOptionPipeName},
+#endif
       {"url", required_argument, nullptr, kOptionURL},
       {"help", no_argument, nullptr, kOptionHelp},
       {"version", no_argument, nullptr, kOptionVersion},
       {nullptr, 0, nullptr, 0},
   };
 
   int opt;
   while ((opt = getopt_long(argc, argv, "", long_options, nullptr)) != -1) {
     switch (opt) {
       case kOptionAnnotation: {
         std::string key;
         std::string value;
         if (!SplitString(optarg, '=', &key, &value)) {
           ToolSupport::UsageHint(me, "--annotation requires KEY=VALUE");
           return EXIT_FAILURE;
         }
         std::string old_value;
         if (!MapInsertOrReplace(&options.annotations, key, value, &old_value)) {
           LOG(WARNING) << "duplicate key " << key << ", discarding value "
                        << old_value;
         }
         break;
       }
       case kOptionDatabase: {
         options.database = optarg;
         break;
       }
+#if defined(OS_MACOSX)
       case kOptionHandshakeFD: {
         if (!StringToNumber(optarg, &options.handshake_fd) ||
             options.handshake_fd < 0) {
           ToolSupport::UsageHint(me,
                                  "--handshake-fd requires a file descriptor");
           return EXIT_FAILURE;
         }
         break;
       }
+#elif defined(OS_WIN)
+      case kOptionPipeName: {
+        options.pipe_name = optarg;
+        break;
+      }
+#endif  // OS_MACOSX
       case kOptionURL: {
         options.url = optarg;
         break;
       }
       case kOptionHelp: {
         Usage(me);
         return EXIT_SUCCESS;
       }
       case kOptionVersion: {
         ToolSupport::Version(me);
         return EXIT_SUCCESS;
       }
       default: {
         ToolSupport::UsageHint(me, nullptr);
         return EXIT_FAILURE;
       }
     }
   }
   argc -= optind;
   argv += optind;
 
+#if defined(OS_MACOSX)
   if (options.handshake_fd < 0) {
     ToolSupport::UsageHint(me, "--handshake-fd is required");
     return EXIT_FAILURE;
   }
+#elif defined(OS_WIN)
+  if (options.pipe_name.empty()) {
+    ToolSupport::UsageHint(me, "--pipe-name is required");
+    return EXIT_FAILURE;
+  }
+#endif
 
   if (!options.database) {
     ToolSupport::UsageHint(me, "--database is required");
     return EXIT_FAILURE;
   }
 
   if (argc) {
     ToolSupport::UsageHint(me, nullptr);
     return EXIT_FAILURE;
   }
 
-  CloseStdinAndStdout();
-
   ExceptionHandlerServer exception_handler_server;
 
+#if defined(OS_MACOSX)
+  CloseStdinAndStdout();
   ChildPortHandshake::RunClient(options.handshake_fd,
                                 exception_handler_server.receive_port(),
                                 MACH_MSG_TYPE_MAKE_SEND);
+#endif  // OS_MACOSX
 
   scoped_ptr<CrashReportDatabase> database(
-      CrashReportDatabase::Initialize(base::FilePath(options.database)));
+      CrashReportDatabase::Initialize(base::FilePath(
+#if defined(OS_MACOSX)
+          options.database
+#elif defined(OS_WIN)
+          base::UTF8ToUTF16(options.database)
+#endif
+          )));
   if (!database) {
     return EXIT_FAILURE;
   }
 
   CrashReportUploadThread upload_thread(database.get(), options.url);
   upload_thread.Start();
 
   CrashReportExceptionHandler exception_handler(
       database.get(), &upload_thread, &options.annotations);
 
+#if defined(OS_MACOSX)
   exception_handler_server.Run(&exception_handler);
+#elif defined(OS_WIN)
+  exception_handler_server.Run(&exception_handler, options.pipe_name);
+#endif  // OS_MACOSX
 
   upload_thread.Stop();
 
   return EXIT_SUCCESS;
 }
 
 }  // namespace
 }  // namespace crashpad
 
+#if defined(OS_MACOSX)
 int main(int argc, char* argv[]) {
   return crashpad::HandlerMain(argc, argv);
 }
+#elif defined(OS_WIN)
+int wmain(int argc, wchar_t* argv[]) {
+  return crashpad::ToolSupport::Wmain(argc, argv, crashpad::HandlerMain);
+}
+#endif  // OS_MACOSX