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/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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 <sys/wait.h>
#include <android-base/cmsg.h>
#include <cmd.h>
#include "adb.h"
#include "adb_io.h"
#include "adb_utils.h"
#include "shell_service.h"
namespace {
class AdbFdTextOutput : public android::TextOutput {
public:
explicit AdbFdTextOutput(int fd) : mFD(fd) {}
private:
android::status_t print(const char* txt, size_t len) override {
return WriteFdExactly(mFD, txt, len) ? android::OK : -errno;
}
void moveIndent(int delta) override { /*not implemented*/
}
void pushBundle() override { /*not implemented*/
}
void popBundle() override { /*not implemented*/
}
private:
int mFD;
};
std::vector<std::string_view> parseCmdArgs(std::string_view args) {
std::vector<std::string_view> argv;
char delim = ABB_ARG_DELIMETER;
size_t size = args.size();
size_t base = 0;
while (base < size) {
size_t found;
for (found = base; found < size && args[found] && args[found] != delim; ++found)
;
if (found > base) {
argv.emplace_back(args.substr(base, found - base));
}
base = found + 1;
}
return argv;
}
} // namespace
static int execCmd(std::string_view args, int in, int out, int err) {
AdbFdTextOutput oin(out);
AdbFdTextOutput oerr(err);
return cmdMain(parseCmdArgs(args), oin, oerr, in, out, err, RunMode::kLibrary);
}
int main(int argc, char* const argv[]) {
signal(SIGPIPE, SIG_IGN);
int fd = STDIN_FILENO;
std::string data;
while (true) {
std::string error;
if (!ReadProtocolString(fd, &data, &error)) {
PLOG(ERROR) << "Failed to read message: " << error;
break;
}
std::string_view name = data;
auto protocol = SubprocessProtocol::kShell;
if (ConsumePrefix(&name, "abb:")) {
protocol = SubprocessProtocol::kShell;
} else if (ConsumePrefix(&name, "abb_exec:")) {
protocol = SubprocessProtocol::kNone;
} else {
LOG(FATAL) << "Unknown command prefix for abb: " << data;
}
unique_fd result = StartCommandInProcess(std::string(name), &execCmd, protocol);
if (android::base::SendFileDescriptors(fd, "", 1, result.get()) != 1) {
PLOG(ERROR) << "Failed to send an inprocess fd for command: " << data;
break;
}
}
}
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