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// Copyright (c) 2006-2009 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/shell_integration.h"
#include <fcntl.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <vector>
#include "base/process_util.h"
#if defined(GOOGLE_CHROME_BUILD)
#define DESKTOP_APP_NAME "google-chrome.desktop"
#else // CHROMIUM_BUILD
#define DESKTOP_APP_NAME "chromium-browser.desktop"
#endif
// We delegate the difficult of setting the default browser in Linux desktop
// environments to a new xdg utility, xdg-settings. We'll have to include a copy
// of it for this to work, obviously, but that's actually the suggested approach
// for xdg utilities anyway.
bool ShellIntegration::SetAsDefaultBrowser() {
std::vector<std::string> argv;
argv.push_back("xdg-settings");
argv.push_back("set");
argv.push_back("default-web-browser");
argv.push_back(DESKTOP_APP_NAME);
// xdg-settings internally runs xdg-mime, which uses mv to move newly-created
// files on top of originals after making changes to them. In the event that
// the original files are owned by another user (e.g. root, which can happen
// if they are updated within sudo), mv will prompt the user to confirm if
// standard input is a terminal (otherwise it just does it). So make sure it's
// not, to avoid locking everything up waiting for mv.
int devnull = open("/dev/null", O_RDONLY);
if (devnull < 0)
return false;
base::file_handle_mapping_vector no_stdin;
no_stdin.push_back(std::make_pair(devnull, STDIN_FILENO));
base::ProcessHandle handle;
if (!base::LaunchApp(argv, no_stdin, false, &handle)) {
close(devnull);
return false;
}
close(devnull);
int success_code;
base::WaitForExitCode(handle, &success_code);
return success_code == EXIT_SUCCESS;
}
static bool GetDefaultBrowser(std::string* result) {
std::vector<std::string> argv;
argv.push_back("xdg-settings");
argv.push_back("get");
argv.push_back("default-web-browser");
return base::GetAppOutput(CommandLine(argv), result);
}
bool ShellIntegration::IsDefaultBrowser() {
std::string browser;
if (!GetDefaultBrowser(&browser)) {
// If GetDefaultBrowser() fails, we assume xdg-settings does not work for
// some reason, and that we should pretend we're the default browser to
// avoid giving repeated prompts to set ourselves as the default browser.
// TODO: Really, being the default browser should be a ternary query: yes,
// no, and "don't know" so that the UI can reflect this more accurately.
return true;
}
// Allow for an optional newline at the end.
if (browser.length() > 0 && browser[browser.length() - 1] == '\n')
browser.resize(browser.length() - 1);
return !browser.compare(DESKTOP_APP_NAME);
}
bool ShellIntegration::IsFirefoxDefaultBrowser() {
std::string browser;
// We don't care about the return value here.
GetDefaultBrowser(&browser);
return browser.find("irefox") != std::string::npos;
}
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