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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/test/test_server.h"
#include <poll.h>
#include <vector>
#include "base/command_line.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/process_util.h"
#include "base/string_number_conversions.h"
#include "base/string_util.h"
#include "base/test/test_timeouts.h"
namespace {
// Helper class used to detect and kill orphaned python test server processes.
// Checks if the command line of a process contains |path_string| (the path
// from which the test server was launched) and |port_string| (the port used by
// the test server), and if the parent pid of the process is 1 (indicating that
// it is an orphaned process).
class OrphanedTestServerFilter : public base::ProcessFilter {
public:
OrphanedTestServerFilter(
const std::string& path_string, const std::string& port_string)
: path_string_(path_string),
port_string_(port_string) {}
virtual bool Includes(const base::ProcessEntry& entry) const {
if (entry.parent_pid() != 1)
return false;
bool found_path_string = false;
bool found_port_string = false;
for (std::vector<std::string>::const_iterator it =
entry.cmd_line_args().begin();
it != entry.cmd_line_args().end();
++it) {
if (it->find(path_string_) != std::string::npos)
found_path_string = true;
if (it->find(port_string_) != std::string::npos)
found_port_string = true;
}
return found_path_string && found_port_string;
}
private:
std::string path_string_;
std::string port_string_;
DISALLOW_COPY_AND_ASSIGN(OrphanedTestServerFilter);
};
} // namespace
namespace net {
bool TestServer::LaunchPython(const FilePath& testserver_path) {
CommandLine python_command(FilePath(FILE_PATH_LITERAL("python")));
python_command.AppendArgPath(testserver_path);
if (!AddCommandLineArguments(&python_command))
return false;
int pipefd[2];
if (pipe(pipefd) != 0) {
PLOG(ERROR) << "Could not create pipe.";
return false;
}
// Save the read half. The write half is sent to the child.
child_fd_ = pipefd[0];
child_fd_closer_.reset(&child_fd_);
file_util::ScopedFD write_closer(&pipefd[1]);
base::file_handle_mapping_vector map_write_fd;
map_write_fd.push_back(std::make_pair(pipefd[1], pipefd[1]));
python_command.AppendSwitchASCII("startup-pipe",
base::IntToString(pipefd[1]));
// Try to kill any orphaned testserver processes that may be running.
OrphanedTestServerFilter filter(testserver_path.value(),
base::IntToString(host_port_pair_.port()));
if (!base::KillProcesses(L"python", -1, &filter)) {
LOG(WARNING) << "Failed to clean up older orphaned testserver instances.";
}
// Launch a new testserver process.
if (!base::LaunchApp(python_command.argv(), map_write_fd, false,
&process_handle_)) {
LOG(ERROR) << "Failed to launch " << python_command.command_line_string()
<< " ...";
return false;
}
return true;
}
bool TestServer::WaitToStart() {
uint16 port;
uint8* buffer = reinterpret_cast<uint8*>(&port);
ssize_t bytes_read = 0;
ssize_t bytes_max = sizeof(port);
base::TimeDelta remaining_time = base::TimeDelta::FromMilliseconds(
TestTimeouts::action_max_timeout_ms());
base::Time previous_time = base::Time::Now();
while (bytes_read < bytes_max) {
struct pollfd poll_fds[1];
poll_fds[0].fd = child_fd_;
poll_fds[0].events = POLLIN | POLLPRI;
poll_fds[0].revents = 0;
int rv = HANDLE_EINTR(poll(poll_fds, 1, remaining_time.InMilliseconds()));
if (rv != 1) {
LOG(ERROR) << "Failed to poll for the child file descriptor.";
return false;
}
base::Time current_time = base::Time::Now();
base::TimeDelta elapsed_time_cycle = current_time - previous_time;
DCHECK(elapsed_time_cycle.InMilliseconds() >= 0);
remaining_time -= elapsed_time_cycle;
previous_time = current_time;
ssize_t num_bytes = HANDLE_EINTR(read(child_fd_, buffer + bytes_read,
bytes_max - bytes_read));
if (num_bytes <= 0)
break;
bytes_read += num_bytes;
}
// We don't need the FD anymore.
child_fd_closer_.reset(NULL);
if (bytes_read < bytes_max)
return false;
host_port_pair_.set_port(port);
return true;
}
bool TestServer::CheckCATrusted() {
return true;
}
} // namespace net
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