1 files changed, 196 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedCookieResource.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedCookieResource.java
new file mode 100644
index 000000000..606c951b8
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/linked/LinkedCookieResource.java
@@ -0,0 +1,196 @@
+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("pgpid+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 PGP key: openpgp4fpr:%s]",
+                KeyFormattingUtils.convertFingerprintToHex(fingerprint));
+    }
+
+    public static String generatePreview () {
+        return "[Verifying my PGP 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;
+        }
+
+    }
+
+}