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- using System;
- using System.Diagnostics;
- using System.IO;
- using System.Text;
- using Shadowsocks.Controller;
- using Shadowsocks.Properties;
-
- namespace Shadowsocks.Util.SystemProxy
- {
- public static class Sysproxy
- {
- private static bool _userSettingsRecorded = false;
-
- // In general, this won't change
- // format:
- // <flags><CR-LF>
- // <proxy-server><CR-LF>
- // <bypass-list><CR-LF>
- // <pac-url>
- private static string[] _userSettings = new string[4];
-
- enum RET_ERRORS : int
- {
- RET_NO_ERROR = 0,
- INVALID_FORMAT = 1,
- NO_PERMISSION = 2,
- SYSCALL_FAILED = 3,
- NO_MEMORY = 4,
- INVAILD_OPTION_COUNT = 5,
- };
-
- static Sysproxy()
- {
- try
- {
- FileManager.UncompressFile(Utils.GetTempPath("sysproxy.exe"),
- Environment.Is64BitOperatingSystem ? Resources.sysproxy64_exe : Resources.sysproxy_exe);
- }
- catch (IOException e)
- {
- Logging.LogUsefulException(e);
- }
- }
-
- public static void SetIEProxy(bool enable, bool global, string proxyServer, string pacURL)
- {
- string str;
- if (_userSettingsRecorded == false)
- {
- // record user settings
- ExecSysproxy("query", out str);
- ParseQueryStr(str);
- _userSettingsRecorded = true;
- }
- string arguments;
-
- if (enable)
- {
- arguments = global
- ? $"global {proxyServer} <local>;localhost;127.*;10.*;172.16.*;172.17.*;172.18.*;172.19.*;172.20.*;172.21.*;172.22.*;172.23.*;172.24.*;172.25.*;172.26.*;172.27.*;172.28.*;172.29.*;172.30.*;172.31.*;172.32.*;192.168.*"
- : $"pac {pacURL}";
- }
- else
- {
- // restore user settings
- var flags = _userSettings[0];
- var proxy_server = _userSettings[1] ?? "-";
- var bypass_list = _userSettings[2] ?? "-";
- var pac_url = _userSettings[3] ?? "-";
- arguments = $"set {flags} {proxy_server} {bypass_list} {pac_url}";
-
- // have to get new settings
- _userSettingsRecorded = false;
- }
-
- ExecSysproxy(arguments, out str);
- }
-
- private static void ExecSysproxy(string arguments, out string queryStr)
- {
- using (var process = new Process())
- {
- // Configure the process using the StartInfo properties.
- process.StartInfo.FileName = Utils.GetTempPath("sysproxy.exe");
- process.StartInfo.Arguments = arguments;
- process.StartInfo.WorkingDirectory = Utils.GetTempPath();
- process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
- process.StartInfo.UseShellExecute = false;
- process.StartInfo.RedirectStandardError = true;
- process.StartInfo.RedirectStandardOutput = true;
-
- // Need to provide encoding info, or output/error strings we got will be wrong.
- process.StartInfo.StandardOutputEncoding = Encoding.Unicode;
- process.StartInfo.StandardErrorEncoding = Encoding.Unicode;
-
- process.StartInfo.CreateNoWindow = true;
- process.Start();
-
- var stderr = process.StandardError.ReadToEnd();
- var stdout = process.StandardOutput.ReadToEnd();
-
- process.WaitForExit();
-
- var exitCode = process.ExitCode;
- if (exitCode != (int)RET_ERRORS.RET_NO_ERROR)
- {
- throw new ProxyException(stderr);
- }
-
- if (arguments == "query" && stdout.IsNullOrWhiteSpace())
- {
- // we cannot get user settings
- throw new ProxyException("failed to query wininet settings");
- }
- queryStr = stdout;
- }
- }
-
- private static void ParseQueryStr(string str)
- {
- _userSettings = str.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
- for (var i = 0; i < 4; i++)
- {
- // handle output from WinINET
- if (_userSettings[i] == "(null)")
- _userSettings[i] = null;
- }
- }
- }
- }
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