diff options
Diffstat (limited to 'org_apg_integration_lib/src/org/thialfihar/android/apg/integration/ContentProviderHelper.java')
| -rw-r--r-- | org_apg_integration_lib/src/org/thialfihar/android/apg/integration/ContentProviderHelper.java | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/ContentProviderHelper.java b/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/ContentProviderHelper.java new file mode 100644 index 000000000..7b725fe06 --- /dev/null +++ b/org_apg_integration_lib/src/org/thialfihar/android/apg/integration/ContentProviderHelper.java @@ -0,0 +1,195 @@ +/* + * Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de> + * Copyright (C) 2010-2011 K-9 Mail Contributors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.thialfihar.android.apg.integration; + +import android.app.Activity; +import android.content.ContentUris; +import android.content.Context; +import android.database.Cursor; +import android.net.Uri; +import android.widget.Toast; + +public class ContentProviderHelper { + public static final String AUTHORITY = Constants.APG_PACKAGE_NAME; + + public static final Uri CONTENT_URI_PUBLIC_KEY_RING_BY_KEY_ID = Uri.parse("content://" + + AUTHORITY + "/key_rings/public/key_id/"); + public static final Uri CONTENT_URI_PUBLIC_KEY_RING_BY_EMAILS = Uri.parse("content://" + + AUTHORITY + "/key_rings/public/emails/"); + + public static final Uri CONTENT_URI_SECRET_KEY_RING_BY_KEY_ID = Uri.parse("content://" + + AUTHORITY + "/key_rings/secret/key_id/"); + public static final Uri CONTENT_URI_SECRET_KEY_RING_BY_EMAILS = Uri.parse("content://" + + AUTHORITY + "/key_rings/secret/emails/"); + + private Context activity; + + public ContentProviderHelper(Activity activity) { + this.activity = activity; + } + + /** + * Get secret key ids based on a given email. + * + * @param context + * @param email + * The email in question. + * @return key ids + */ + public long[] getSecretKeyIdsFromEmail(String email) { + long ids[] = null; + try { + Uri contentUri = Uri.withAppendedPath(CONTENT_URI_SECRET_KEY_RING_BY_EMAILS, email); + Cursor c = activity.getContentResolver().query(contentUri, + new String[] { "master_key_id" }, null, null, null); + if (c != null && c.getCount() > 0) { + ids = new long[c.getCount()]; + while (c.moveToNext()) { + ids[c.getPosition()] = c.getLong(0); + } + } + + if (c != null) { + c.close(); + } + } catch (SecurityException e) { + insufficientPermissions(); + } + + return ids; + } + + /** + * Get public key ids based on a given email. + * + * @param context + * @param email + * The email in question. + * @return key ids + */ + public long[] getPublicKeyIdsFromEmail(String email) { + long ids[] = null; + try { + Uri contentUri = Uri.withAppendedPath(CONTENT_URI_PUBLIC_KEY_RING_BY_EMAILS, email); + Cursor c = activity.getContentResolver().query(contentUri, + new String[] { "master_key_id" }, null, null, null); + if (c != null && c.getCount() > 0) { + ids = new long[c.getCount()]; + while (c.moveToNext()) { + ids[c.getPosition()] = c.getLong(0); + } + } + + if (c != null) { + c.close(); + } + } catch (SecurityException e) { + insufficientPermissions(); + } + + return ids; + } + + /** + * Find out if a given email has a secret key. + * + * @param context + * @param email + * The email in question. + * @return true if there is a secret key for this email. + */ + public boolean hasSecretKeyForEmail(String email) { + try { + Uri contentUri = Uri.withAppendedPath(CONTENT_URI_SECRET_KEY_RING_BY_EMAILS, email); + Cursor c = activity.getContentResolver().query(contentUri, + new String[] { "master_key_id" }, null, null, null); + if (c != null && c.getCount() > 0) { + c.close(); + return true; + } + if (c != null) { + c.close(); + } + } catch (SecurityException e) { + insufficientPermissions(); + } + return false; + } + + /** + * Find out if a given email has a public key. + * + * @param context + * @param email + * The email in question. + * @return true if there is a public key for this email. + */ + public boolean hasPublicKeyForEmail(String email) { + try { + Uri contentUri = Uri.withAppendedPath(CONTENT_URI_PUBLIC_KEY_RING_BY_EMAILS, email); + Cursor c = activity.getContentResolver().query(contentUri, + new String[] { "master_key_id" }, null, null, null); + if (c != null && c.getCount() > 0) { + c.close(); + return true; + } + if (c != null) { + c.close(); + } + } catch (SecurityException e) { + insufficientPermissions(); + } + return false; + } + + /** + * Get the user id based on the key id. + * + * @param context + * @param keyId + * @return user id + */ + public String getUserId(long keyId) { + String userId = null; + try { + Uri contentUri = ContentUris.withAppendedId(CONTENT_URI_SECRET_KEY_RING_BY_KEY_ID, + keyId); + Cursor c = activity.getContentResolver().query(contentUri, new String[] { "user_id" }, + null, null, null); + if (c != null && c.moveToFirst()) { + userId = c.getString(0); + } + + if (c != null) { + c.close(); + } + } catch (SecurityException e) { + insufficientPermissions(); + } + + if (userId == null) { + userId = "unknown"; + } + return userId; + } + + private void insufficientPermissions() { + Toast.makeText(activity, "Permission to access APG Provider is missing!", Toast.LENGTH_LONG) + .show(); + } +} |