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// Copyright (c) 2011 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.
#if !defined(OS_CHROMEOS)
#include "chrome/browser/dom_ui/options/advanced_options_utils.h"
#include "base/file_util.h"
#include "base/environment.h"
#include "base/process_util.h"
#include "base/string_tokenizer.h"
#include "base/nix/xdg_util.h"
#include "chrome/browser/browser_list.h"
#include "chrome/browser/browser_thread.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/common/process_watcher.h"
#include "ui/base/gtk/gtk_signal.h"
// Command used to configure GNOME proxy settings. The command was renamed
// in January 2009, so both are used to work on both old and new systems.
const char* kOldGNOMEProxyConfigCommand[] = {"gnome-network-preferences", NULL};
const char* kGNOMEProxyConfigCommand[] = {"gnome-network-properties", NULL};
// KDE3 and KDE4 are only slightly different, but incompatible. Go figure.
const char* kKDE3ProxyConfigCommand[] = {"kcmshell", "proxy", NULL};
const char* kKDE4ProxyConfigCommand[] = {"kcmshell4", "proxy", NULL};
// The URL for Linux proxy configuration help when not running under a
// supported desktop environment.
const char kLinuxProxyConfigUrl[] = "about:linux-proxy-config";
struct ProxyConfigCommand {
std::string binary;
const char** argv;
};
namespace {
// Search $PATH to find one of the commands. Store the full path to
// it in the |binary| field and the command array index in in |index|.
bool SearchPATH(ProxyConfigCommand* commands, size_t ncommands, size_t* index) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
const char* path = getenv("PATH");
if (!path)
return false;
FilePath bin_path;
CStringTokenizer tk(path, path + strlen(path), ":");
// Search $PATH looking for the commands in order.
while (tk.GetNext()) {
for (size_t i = 0; i < ncommands; i++) {
bin_path = FilePath(tk.token()).Append(commands[i].argv[0]);
if (file_util::PathExists(bin_path)) {
commands[i].binary = bin_path.value();
if (index)
*index = i;
return true;
}
}
}
// Did not find any of the binaries in $PATH.
return false;
}
// Show the proxy config URL in the given tab.
void ShowLinuxProxyConfigUrl(TabContents* tab_contents) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
scoped_ptr<base::Environment> env(base::Environment::Create());
const char* name = base::nix::GetDesktopEnvironmentName(env.get());
if (name)
LOG(ERROR) << "Could not find " << name << " network settings in $PATH";
tab_contents->OpenURL(GURL(kLinuxProxyConfigUrl), GURL(),
NEW_FOREGROUND_TAB, PageTransition::LINK);
}
// Start the given proxy configuration utility.
void StartProxyConfigUtil(TabContents* tab_contents,
const ProxyConfigCommand& command) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
std::vector<std::string> argv;
argv.push_back(command.binary);
for (size_t i = 1; command.argv[i]; i++)
argv.push_back(command.argv[i]);
base::file_handle_mapping_vector no_files;
base::ProcessHandle handle;
if (!base::LaunchApp(argv, no_files, false, &handle)) {
LOG(ERROR) << "StartProxyConfigUtil failed to start " << command.binary;
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
NewRunnableFunction(&ShowLinuxProxyConfigUrl, tab_contents));
return;
}
ProcessWatcher::EnsureProcessGetsReaped(handle);
}
// Detect, and if possible, start the appropriate proxy config utility. On
// failure to do so, show the Linux proxy config URL in a new tab instead.
void DetectAndStartProxyConfigUtil(TabContents* tab_contents) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
scoped_ptr<base::Environment> env(base::Environment::Create());
ProxyConfigCommand command;
bool found_command = false;
switch (base::nix::GetDesktopEnvironment(env.get())) {
case base::nix::DESKTOP_ENVIRONMENT_GNOME: {
size_t index;
ProxyConfigCommand commands[2];
commands[0].argv = kGNOMEProxyConfigCommand;
commands[1].argv = kOldGNOMEProxyConfigCommand;
found_command = SearchPATH(commands, 2, &index);
if (found_command)
command = commands[index];
break;
}
case base::nix::DESKTOP_ENVIRONMENT_KDE3:
command.argv = kKDE3ProxyConfigCommand;
found_command = SearchPATH(&command, 1, NULL);
break;
case base::nix::DESKTOP_ENVIRONMENT_KDE4:
command.argv = kKDE4ProxyConfigCommand;
found_command = SearchPATH(&command, 1, NULL);
break;
case base::nix::DESKTOP_ENVIRONMENT_XFCE:
case base::nix::DESKTOP_ENVIRONMENT_OTHER:
break;
}
if (found_command) {
StartProxyConfigUtil(tab_contents, command);
} else {
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
NewRunnableFunction(&ShowLinuxProxyConfigUrl, tab_contents));
}
}
} // anonymous namespace
void AdvancedOptionsUtilities::ShowNetworkProxySettings(
TabContents* tab_contents) {
BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
NewRunnableFunction(&DetectAndStartProxyConfigUtil, tab_contents));
}
#endif // !defined(OS_CHROMEOS)
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