1 files changed, 218 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/linked/resources/GithubResource.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/linked/resources/GithubResource.java
new file mode 100644
index 000000000..7a97ffd96
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/linked/resources/GithubResource.java
@@ -0,0 +1,218 @@
+package org.sufficientlysecure.keychain.linked.resources;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.support.annotation.DrawableRes;
+import android.support.annotation.StringRes;
+
+import org.apache.http.client.methods.HttpGet;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.operations.results.OperationResult.LogType;
+import org.sufficientlysecure.keychain.operations.results.OperationResult.OperationLog;
+import org.sufficientlysecure.keychain.linked.LinkedTokenResource;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+
+public class GithubResource extends LinkedTokenResource {
+
+    final String mHandle;
+    final String mGistId;
+
+    GithubResource(Set<String> flags, HashMap<String,String> params, URI uri,
+            String handle, String gistId) {
+        super(flags, params, uri);
+
+        mHandle = handle;
+        mGistId = gistId;
+    }
+
+    public static String generate(Context context, byte[] fingerprint) {
+        String token = LinkedTokenResource.generate(fingerprint);
+
+        return String.format(context.getResources().getString(R.string.linked_id_github_text), token);
+    }
+
+    @SuppressWarnings("deprecation") // HttpGet is deprecated
+    @Override
+    protected String fetchResource (Context context, OperationLog log, int indent)
+            throws HttpStatusException, IOException, JSONException {
+
+        log.add(LogType.MSG_LV_FETCH, indent, mSubUri.toString());
+        indent += 1;
+
+        HttpGet httpGet = new HttpGet("https://api.github.com/gists/" + mGistId);
+        String response = getResponseBody(context, httpGet);
+
+        JSONObject obj = new JSONObject(response);
+
+        JSONObject owner = obj.getJSONObject("owner");
+        if (!mHandle.equals(owner.getString("login"))) {
+            log.add(LogType.MSG_LV_ERROR_GITHUB_HANDLE, indent);
+            return null;
+        }
+
+        JSONObject files = obj.getJSONObject("files");
+        Iterator<String> it = files.keys();
+        if (it.hasNext()) {
+            // TODO can there be multiple candidates?
+            JSONObject file = files.getJSONObject(it.next());
+            return file.getString("content");
+        }
+
+        log.add(LogType.MSG_LV_ERROR_GITHUB_NOT_FOUND, indent);
+        return null;
+
+    }
+
+    @Deprecated // not used for now, but could be used to pick up earlier posted gist if already present?
+    @SuppressWarnings({ "deprecation", "unused" })
+    public static GithubResource searchInGithubStream(
+            Context context, String screenName, String needle, OperationLog log) {
+
+        // narrow the needle down to important part
+        Matcher matcher = magicPattern.matcher(needle);
+        if (!matcher.find()) {
+            throw new AssertionError("Needle must contain token pattern! This is a programming error, please report.");
+        }
+        needle = matcher.group();
+
+        try {
+
+            JSONArray array; {
+                HttpGet httpGet =
+                        new HttpGet("https://api.github.com/users/" + screenName + "/gists");
+                httpGet.setHeader("Content-Type", "application/json");
+                httpGet.setHeader("User-Agent", "OpenKeychain");
+
+                String response = getResponseBody(context, httpGet);
+                array = new JSONArray(response);
+            }
+
+            for (int i = 0, j = Math.min(array.length(), 5); i < j; i++) {
+                JSONObject obj = array.getJSONObject(i);
+
+                JSONObject files = obj.getJSONObject("files");
+                Iterator<String> it = files.keys();
+                if (it.hasNext()) {
+
+                    JSONObject file = files.getJSONObject(it.next());
+                    String type = file.getString("type");
+                    if (!"text/plain".equals(type)) {
+                        continue;
+                    }
+                    String id = obj.getString("id");
+                    HttpGet httpGet = new HttpGet("https://api.github.com/gists/" + id);
+                    httpGet.setHeader("User-Agent", "OpenKeychain");
+
+                    JSONObject gistObj = new JSONObject(getResponseBody(context, httpGet));
+                    JSONObject gistFiles = gistObj.getJSONObject("files");
+                    Iterator<String> gistIt = gistFiles.keys();
+                    if (!gistIt.hasNext()) {
+                        continue;
+                    }
+                    // TODO can there be multiple candidates?
+                    JSONObject gistFile = gistFiles.getJSONObject(gistIt.next());
+                    String content = gistFile.getString("content");
+                    if (!content.contains(needle)) {
+                        continue;
+                    }
+
+                    URI uri = URI.create("https://gist.github.com/" + screenName + "/" + id);
+                    return create(uri);
+                }
+            }
+
+            // update the results with the body of the response
+            log.add(LogType.MSG_LV_FETCH_ERROR_NOTHING, 2);
+            return null;
+
+        } 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);
+        }
+
+        return null;
+    }
+
+    public static GithubResource create(URI uri) {
+        return create(new HashSet<String>(), new HashMap<String,String>(), uri);
+    }
+
+    public static GithubResource create(Set<String> flags, HashMap<String,String> params, URI uri) {
+
+        // no params or flags
+        if (!flags.isEmpty() || !params.isEmpty()) {
+            return null;
+        }
+
+        Pattern p = Pattern.compile("https://gist\\.github\\.com/([a-zA-Z0-9_]+)/([0-9a-f]+)");
+        Matcher match = p.matcher(uri.toString());
+        if (!match.matches()) {
+            return null;
+        }
+        String handle = match.group(1);
+        String gistId = match.group(2);
+
+        return new GithubResource(flags, params, uri, handle, gistId);
+
+    }
+
+
+    @Override
+    public @DrawableRes
+    int getDisplayIcon() {
+        return R.drawable.linked_github;
+    }
+
+    @Override
+    public @StringRes
+    int getVerifiedText(boolean isSecret) {
+        return isSecret ? R.string.linked_verified_secret_github : R.string.linked_verified_github;
+    }
+
+    @Override
+    public String getDisplayTitle(Context context) {
+        return context.getString(R.string.linked_title_github);
+    }
+
+    @Override
+    public String getDisplayComment(Context context) {
+        return mHandle;
+    }
+
+    @Override
+    public boolean isViewable() {
+        return true;
+    }
+
+    @Override
+    public Intent getViewIntent() {
+        Intent intent = new Intent(Intent.ACTION_VIEW);
+        intent.setData(Uri.parse(mSubUri.toString()));
+        return intent;
+    }
+}