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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 "chrome/browser/process_singleton.h"
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
#include <unistd.h>
#include <vector>
#include <string>
#include "base/eintr_wrapper.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "base/string_util.h"
#include "base/thread.h"
#include "chrome/browser/browser.h"
#include "chrome/browser/browser_process.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/test/chrome_process_util.h"
#include "chrome/test/ui/ui_test.h"
#include "net/base/net_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
typedef UITest ProcessSingletonLinuxTest;
// A helper method to call ProcessSingleton::NotifyOtherProcess().
// |url| will be added to CommandLine for current process, so that it can be
// sent to browser process by ProcessSingleton::NotifyOtherProcess().
ProcessSingleton::NotifyResult NotifyOtherProcess(const std::string& url,
int timeout_ms) {
FilePath user_data_dir;
PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
// Hack: mutate the current process's command line so we don't show a dialog.
// Note that this only works if we have no loose values on the command line,
// but that's fine for unit tests. In a UI test we disable error dialogs
// when spawning Chrome, but this test hits the ProcessSingleton directly.
CommandLine* cmd_line = CommandLine::ForCurrentProcess();
if (!cmd_line->HasSwitch(switches::kNoProcessSingletonDialog))
cmd_line->AppendSwitch(switches::kNoProcessSingletonDialog);
CommandLine new_cmd_line(*cmd_line);
new_cmd_line.AppendLooseValue(ASCIIToWide(url));
ProcessSingleton process_singleton(user_data_dir);
return process_singleton.NotifyOtherProcessWithTimeout(
new_cmd_line, timeout_ms / 1000);
}
} // namespace
// Test if the socket file and symbol link created by ProcessSingletonLinux
// are valid. When running this test, the ProcessSingleton object is already
// initiated by UITest. So we just test against this existing object.
TEST_F(ProcessSingletonLinuxTest, CheckSocketFile) {
FilePath user_data_dir;
FilePath socket_path;
FilePath lock_path;
PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
socket_path = user_data_dir.Append(chrome::kSingletonSocketFilename);
lock_path = user_data_dir.Append(chrome::kSingletonLockFilename);
struct stat statbuf;
ASSERT_EQ(0, lstat(lock_path.value().c_str(), &statbuf));
ASSERT_TRUE(S_ISLNK(statbuf.st_mode));
char buf[PATH_MAX + 1];
ssize_t len = readlink(lock_path.value().c_str(), buf, PATH_MAX);
ASSERT_GT(len, 0);
buf[len] = '\0';
ASSERT_EQ(0, lstat(socket_path.value().c_str(), &statbuf));
ASSERT_TRUE(S_ISSOCK(statbuf.st_mode));
}
#if defined(OS_LINUX) && defined(TOOLKIT_VIEWS)
// The following tests in linux/view does not pass without a window manager,
// which is true in build/try bots.
// See http://crbug.com/30953.
#define NotifyOtherProcessSuccess FLAKY_NotifyOtherProcessSuccess
#define NotifyOtherProcessHostChanged FLAKY_NotifyOtherProcessHostChanged
#endif
// TODO(james.su@gmail.com): port following tests to Windows.
// Test success case of NotifyOtherProcess().
TEST_F(ProcessSingletonLinuxTest, NotifyOtherProcessSuccess) {
std::string url("about:blank");
int original_tab_count = GetTabCount();
EXPECT_EQ(ProcessSingleton::PROCESS_NOTIFIED,
NotifyOtherProcess(url, action_timeout_ms()));
EXPECT_EQ(original_tab_count + 1, GetTabCount());
EXPECT_EQ(url, GetActiveTabURL().spec());
}
// Test failure case of NotifyOtherProcess().
TEST_F(ProcessSingletonLinuxTest, NotifyOtherProcessFailure) {
base::ProcessId pid = browser_process_id();
ASSERT_GE(pid, 1);
// Block the browser process, then it'll be killed by
// ProcessSingleton::NotifyOtherProcess().
kill(pid, SIGSTOP);
// Wait to make sure the browser process is actually stopped.
// It's necessary when running with valgrind.
HANDLE_EINTR(waitpid(pid, 0, WUNTRACED));
std::string url("about:blank");
EXPECT_EQ(ProcessSingleton::PROCESS_NONE,
NotifyOtherProcess(url, action_timeout_ms()));
// Wait for a while to make sure the browser process is actually killed.
EXPECT_FALSE(CrashAwareSleep(sleep_timeout_ms()));
}
// Test that we don't kill ourselves by accident if a lockfile with the same pid
// happens to exist.
// TODO(mattm): This doesn't really need to be a uitest. (We don't use the
// uitest created browser process, but we do use some uitest provided stuff like
// the user_data_dir and the NotifyOtherProcess function in this file, which
// would have to be duplicated or shared if this test was moved into a
// unittest.)
TEST_F(ProcessSingletonLinuxTest, NotifyOtherProcessNoSuicide) {
FilePath lock_path = user_data_dir().Append(chrome::kSingletonLockFilename);
FilePath socket_path = user_data_dir().Append(chrome::kSingletonSocketFilename);
// Replace lockfile with one containing our own pid.
EXPECT_EQ(0, unlink(lock_path.value().c_str()));
std::string symlink_content = StringPrintf(
"%s%c%u",
net::GetHostName().c_str(),
'-',
base::GetCurrentProcId());
EXPECT_EQ(0, symlink(symlink_content.c_str(), lock_path.value().c_str()));
// Remove socket so that we will not be able to notify the existing browser.
EXPECT_EQ(0, unlink(socket_path.value().c_str()));
std::string url("about:blank");
EXPECT_EQ(ProcessSingleton::PROCESS_NONE,
NotifyOtherProcess(url, action_timeout_ms()));
// If we've gotten to this point without killing ourself, the test succeeded.
}
// Test that we can still notify a process on the same host even after the
// hostname changed.
TEST_F(ProcessSingletonLinuxTest, NotifyOtherProcessHostChanged) {
FilePath lock_path = user_data_dir().Append(chrome::kSingletonLockFilename);
EXPECT_EQ(0, unlink(lock_path.value().c_str()));
EXPECT_EQ(0, symlink("FAKEFOOHOST-1234", lock_path.value().c_str()));
int original_tab_count = GetTabCount();
std::string url("about:blank");
EXPECT_EQ(ProcessSingleton::PROCESS_NOTIFIED,
NotifyOtherProcess(url, action_timeout_ms()));
EXPECT_EQ(original_tab_count + 1, GetTabCount());
EXPECT_EQ(url, GetActiveTabURL().spec());
}
// Test that we fail when lock says process is on another host and we can't
// notify it over the socket.
TEST_F(ProcessSingletonLinuxTest, NotifyOtherProcessDifferingHost) {
base::ProcessId pid = browser_process_id();
ASSERT_GE(pid, 1);
// Kill the browser process, so that it does not respond on the socket.
kill(pid, SIGKILL);
// Wait for a while to make sure the browser process is actually killed.
EXPECT_FALSE(CrashAwareSleep(sleep_timeout_ms()));
FilePath lock_path = user_data_dir().Append(chrome::kSingletonLockFilename);
EXPECT_EQ(0, unlink(lock_path.value().c_str()));
EXPECT_EQ(0, symlink("FAKEFOOHOST-1234", lock_path.value().c_str()));
std::string url("about:blank");
EXPECT_EQ(ProcessSingleton::PROFILE_IN_USE,
NotifyOtherProcess(url, action_timeout_ms()));
}
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