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// Copyright 2017 The Bazel 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 <windows.h>
#include <fstream>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include "src/tools/launcher/launcher.h"
#include "src/tools/launcher/util/data_parser.h"
#include "src/tools/launcher/util/launcher_util.h"
namespace bazel {
namespace launcher {
using std::ifstream;
using std::ostringstream;
using std::string;
using std::unordered_map;
using std::vector;
BinaryLauncherBase::BinaryLauncherBase(
const LaunchDataParser::LaunchInfo& _launch_info, int argc, char* argv[])
: launch_info(_launch_info),
manifest_file(FindManifestFile(argv[0])),
workspace_name(GetLaunchInfoByKey(WORKSPACE_NAME)) {
for (int i = 0; i < argc; i++) {
this->commandline_arguments.push_back(argv[i]);
}
ParseManifestFile(&this->manifest_file_map, this->manifest_file);
}
string BinaryLauncherBase::FindManifestFile(const char* argv0) {
// Get the name of the binary
string binary = GetBinaryPathWithoutExtension(argv0);
// Try to find <path to binary>.runfiles/MANIFEST
string manifest_file = binary + ".runfiles\\MANIFEST";
if (DoesFilePathExist(manifest_file.c_str())) {
return manifest_file;
}
// Also try to check if <path to binary>.runfiles_manifest exists
manifest_file = binary + ".runfiles_manifest";
if (DoesFilePathExist(manifest_file.c_str())) {
return manifest_file;
}
die("Couldn't find MANIFEST file %s.runfiles\\", binary.c_str());
}
void BinaryLauncherBase::ParseManifestFile(ManifestFileMap* manifest_file_map,
const string& manifest_path) {
ifstream manifest_file(manifest_path.c_str());
if (!manifest_file) {
die("Couldn't open MANIFEST file: %s", manifest_path.c_str());
}
string line;
while (getline(manifest_file, line)) {
size_t space_pos = line.find_first_of(' ');
if (space_pos == string::npos) {
die("Wrong MANIFEST format at line: %s", line.c_str());
}
string key = line.substr(0, space_pos);
string value = line.substr(space_pos + 1);
manifest_file_map->insert(make_pair(key, value));
}
}
string BinaryLauncherBase::Rlocation(const string& path) const {
auto entry = manifest_file_map.find(this->workspace_name + "/" + path);
if (entry == manifest_file_map.end()) {
die("Rlocation failed on %s, path doesn't exist in MANIFEST file",
path.c_str());
}
return entry->second;
}
string BinaryLauncherBase::GetLaunchInfoByKey(const string& key) {
auto item = launch_info.find(key);
if (item == launch_info.end()) {
die("Cannot find key \"%s\" from launch data.\n", key.c_str());
}
return item->second;
}
const vector<string>& BinaryLauncherBase::GetCommandlineArguments() const {
return this->commandline_arguments;
}
void BinaryLauncherBase::CreateCommandLine(
CmdLine* result, const string& executable,
const vector<string>& arguments) const {
ostringstream cmdline;
cmdline << '\"' << executable << '\"';
bool first = true;
for (const auto& s : arguments) {
cmdline << ' ' << GetEscapedArgument(s);
}
string cmdline_str = cmdline.str();
if (cmdline_str.size() >= MAX_CMDLINE_LENGTH) {
die("Command line too long: %s", cmdline_str.c_str());
}
// Copy command line into a mutable buffer.
// CreateProcess is allowed to mutate its command line argument.
strncpy(result->cmdline, cmdline_str.c_str(), MAX_CMDLINE_LENGTH - 1);
result->cmdline[MAX_CMDLINE_LENGTH - 1] = 0;
}
ExitCode BinaryLauncherBase::LaunchProcess(
const string& executable, const vector<string>& arguments) const {
SetEnvironmentVariableA("RUNFILES_MANIFEST_ONLY", "1");
SetEnvironmentVariableA("RUNFILES_MANIFEST_FILE", manifest_file.c_str());
CmdLine cmdline;
CreateCommandLine(&cmdline, executable, arguments);
PROCESS_INFORMATION processInfo = {0};
STARTUPINFOA startupInfo = {0};
startupInfo.cb = sizeof(startupInfo);
BOOL ok = CreateProcessA(
/* lpApplicationName */ NULL,
/* lpCommandLine */ cmdline.cmdline,
/* lpProcessAttributes */ NULL,
/* lpThreadAttributes */ NULL,
/* bInheritHandles */ FALSE,
/* dwCreationFlags */ 0,
/* lpEnvironment */ NULL,
/* lpCurrentDirectory */ NULL,
/* lpStartupInfo */ &startupInfo,
/* lpProcessInformation */ &processInfo);
if (!ok) {
PrintError("Cannot launch process:\n%s", GetLastErrorString().c_str());
return GetLastError();
}
WaitForSingleObject(processInfo.hProcess, INFINITE);
ExitCode exit_code;
GetExitCodeProcess(processInfo.hProcess,
reinterpret_cast<LPDWORD>(&exit_code));
CloseHandle(processInfo.hProcess);
CloseHandle(processInfo.hThread);
return exit_code;
}
} // namespace launcher
} // namespace bazel
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