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package org.sufficientlysecure.keychain.pgp.linked;
import android.content.Context;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.json.JSONException;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.operations.results.LinkedVerifyResult;
import org.sufficientlysecure.keychain.operations.results.OperationResult.LogType;
import org.sufficientlysecure.keychain.operations.results.OperationResult.OperationLog;
import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
import org.sufficientlysecure.keychain.util.Log;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URI;
import java.util.HashMap;
import java.util.Map.Entry;
import java.util.Set;
import java.util.regex.Matcher;
public abstract class LinkedCookieResource extends LinkedResource {
protected LinkedCookieResource(Set<String> flags, HashMap<String, String> params, URI uri) {
super(flags, params, uri);
}
public URI toUri () {
StringBuilder b = new StringBuilder();
b.append("openpgpid+cookie:");
// add flags
if (mFlags != null) {
boolean first = true;
for (String flag : mFlags) {
if (!first) {
b.append(";");
}
first = false;
b.append(flag);
}
}
// add parameters
if (mParams != null) {
boolean first = true;
for (Entry<String, String> stringStringEntry : mParams.entrySet()) {
if (!first) {
b.append(";");
}
first = false;
b.append(stringStringEntry.getKey()).append("=").append(stringStringEntry.getValue());
}
}
b.append("@");
b.append(mSubUri);
return URI.create(b.toString());
}
public URI getSubUri () {
return mSubUri;
}
public static String generate (Context context, byte[] fingerprint) {
return String.format("[Verifying my OpenPGP key: openpgp4fpr:%s]",
KeyFormattingUtils.convertFingerprintToHex(fingerprint));
}
public static String generatePreview () {
return "[Verifying my OpenPGP key: openpgp4fpr:0x…]";
}
public LinkedVerifyResult verify(byte[] fingerprint) {
OperationLog log = new OperationLog();
log.add(LogType.MSG_LV, 0);
// Try to fetch resource. Logs for itself
String res = null;
try {
res = fetchResource(log, 1);
} catch (HttpStatusException e) {
// log verbose output to logcat
Log.e(Constants.TAG, "http error (" + e.getStatus() + "): " + e.getReason());
log.add(LogType.MSG_LV_FETCH_ERROR, 2, Integer.toString(e.getStatus()));
} catch (MalformedURLException e) {
log.add(LogType.MSG_LV_FETCH_ERROR_URL, 2);
} catch (IOException e) {
Log.e(Constants.TAG, "io error", e);
log.add(LogType.MSG_LV_FETCH_ERROR_IO, 2);
} catch (JSONException e) {
Log.e(Constants.TAG, "json error", e);
log.add(LogType.MSG_LV_FETCH_ERROR_FORMAT, 2);
}
if (res == null) {
// if this is null, an error was recorded in fetchResource above
return new LinkedVerifyResult(LinkedVerifyResult.RESULT_ERROR, log);
}
Log.d(Constants.TAG, "Resource data: '" + res + "'");
return verifyString(log, 1, res, fingerprint);
}
protected abstract String fetchResource (OperationLog log, int indent) throws HttpStatusException, IOException,
JSONException;
protected Matcher matchResource (OperationLog log, int indent, String res) {
return magicPattern.matcher(res);
}
protected LinkedVerifyResult verifyString (OperationLog log, int indent,
String res,
byte[] fingerprint) {
log.add(LogType.MSG_LV_MATCH, indent);
Matcher match = matchResource(log, indent+1, res);
if (!match.find()) {
log.add(LogType.MSG_LV_MATCH_ERROR, 2);
return new LinkedVerifyResult(LinkedVerifyResult.RESULT_ERROR, log);
}
String candidateFp = match.group(1).toLowerCase();
String fp = KeyFormattingUtils.convertFingerprintToHex(fingerprint);
if (!fp.equals(candidateFp)) {
log.add(LogType.MSG_LV_FP_ERROR, indent);
return new LinkedVerifyResult(LinkedVerifyResult.RESULT_ERROR, log);
}
log.add(LogType.MSG_LV_FP_OK, indent);
return new LinkedVerifyResult(LinkedVerifyResult.RESULT_OK, log);
}
public static String getResponseBody(HttpRequestBase request) throws IOException, HttpStatusException {
StringBuilder sb = new StringBuilder();
request.setHeader("User-Agent", "Open Keychain");
DefaultHttpClient httpClient = new DefaultHttpClient(new BasicHttpParams());
HttpResponse response = httpClient.execute(request);
int statusCode = response.getStatusLine().getStatusCode();
String reason = response.getStatusLine().getReasonPhrase();
if (statusCode != 200) {
throw new HttpStatusException(statusCode, reason);
}
HttpEntity entity = response.getEntity();
InputStream inputStream = entity.getContent();
BufferedReader bReader = new BufferedReader(
new InputStreamReader(inputStream, "UTF-8"), 8);
String line;
while ((line = bReader.readLine()) != null) {
sb.append(line);
}
return sb.toString();
}
public static class HttpStatusException extends Throwable {
private final int mStatusCode;
private final String mReason;
HttpStatusException(int statusCode, String reason) {
super("http status " + statusCode + ": " + reason);
mStatusCode = statusCode;
mReason = reason;
}
public int getStatus() {
return mStatusCode;
}
public String getReason() {
return mReason;
}
}
}
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