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64bit windows system: use reg query tool to detect AutoconfigURL from registry #228

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64bit windows system: use reg query tool to detect AutoconfigURL from registry #228

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aa73cef
In case of 64bit windows system, try to use
pb00068 Jun 5, 2019
f900ea5
little fix
pb00068 Jun 5, 2019
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69 changes: 68 additions & 1 deletion launcher/src/main/java/com/threerings/getdown/launcher/ProxyUtil.java
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Original file line number Diff line number Diff line change
Expand Up @@ -8,9 +8,11 @@
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.io.Reader;
import java.io.StringWriter;
import java.net.Authenticator;
import java.net.HttpURLConnection;
import java.net.InetAddress;
Expand Down Expand Up @@ -101,7 +103,43 @@ public static boolean autoDetectProxy (Application app)
log.info("Detected no proxy settings in the registry.");
}

} catch (Throwable t) {
}
catch (UnsatisfiedLinkError ul) {
log.info("Now trying to read windows registry using reg query tool..");
try {
Process process = Runtime.getRuntime().exec(AUTO_CONFIG_URL);
StreamReader reader = new StreamReader(process.getInputStream());

reader.start();
process.waitFor();
reader.join();

String result = reader.getResult();
int p = result.indexOf(REGSTR_TOKEN);

if (p >= 0) {
String rpac = result.substring(p + REGSTR_TOKEN.length()).trim();

URL configURL = app.getConfigResource().getRemote();
log.info("PAC-ConfigURL: " + rpac);
Reader acjs = new InputStreamReader(new URL(rpac).openStream());
// technically we should be returning all this info and trying each proxy
// in succession, but that's complexity we'll leave for another day

for (String proxy : findPACProxiesForURL(acjs, configURL)) {
if (proxy.startsWith("PROXY ")) {
String[] hostPort = splitHostPort(proxy.substring(6));
host = hostPort[0];
port = hostPort[1];
break;
}
}
}
} catch (Exception ex) {
log.info("Failed to find proxy settings in Windows registry", "error", ex);
}
}
catch (Throwable t) {
log.info("Failed to find proxy settings in Windows registry", "error", t);
}
}
Expand All @@ -121,6 +159,29 @@ public static boolean autoDetectProxy (Application app)
initProxy(app, host, port, null, null);
return true;
}

static class StreamReader extends Thread {
private InputStream is;
private StringWriter sw;

StreamReader(InputStream is) {
this.is = is;
sw = new StringWriter();
}

public void run() {
try {
int c;
while ((c = is.read()) != -1)
sw.write(c);
}
catch (IOException e) { ; }
}

String getResult() {
return sw.toString();
}
}

public static boolean canLoadWithoutProxy (URL rurl, int timeoutSeconds)
{
Expand Down Expand Up @@ -291,4 +352,10 @@ private static String[] splitHostPort (String hostPort) {

protected static final String PROXY_REGISTRY =
"Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings";
protected static final String REGQUERY_UTIL = "reg query ";
protected static final String REGSTR_TOKEN = "REG_SZ";
protected static final String REGDWORD_TOKEN = "REG_DWORD";
protected static final String AUTO_CONFIG_URL = REGQUERY_UTIL +
"\"HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\"
+ "Internet Settings\" /v AutoconfigURL";
}