open-keychain/org_apg/src/org/thialfihar/android/apg/provider/ApgProvider.java
2012-10-25 14:52:13 +02:00

724 lines
28 KiB
Java

/*
* Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
*
* 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.provider;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Arrays;
import java.util.HashMap;
import org.thialfihar.android.apg.Constants;
import org.thialfihar.android.apg.provider.ApgContract.KeyRingsColumns;
import org.thialfihar.android.apg.provider.ApgContract.KeyTypes;
import org.thialfihar.android.apg.provider.ApgContract.KeysColumns;
import org.thialfihar.android.apg.provider.ApgContract.PublicKeyRings;
import org.thialfihar.android.apg.provider.ApgContract.PublicKeys;
import org.thialfihar.android.apg.provider.ApgContract.PublicUserIds;
import org.thialfihar.android.apg.provider.ApgContract.SecretKeyRings;
import org.thialfihar.android.apg.provider.ApgContract.SecretKeys;
import org.thialfihar.android.apg.provider.ApgContract.SecretUserIds;
import org.thialfihar.android.apg.provider.ApgContract.UserIdsColumns;
import org.thialfihar.android.apg.provider.ApgDatabase.Tables;
import org.thialfihar.android.apg.util.Log;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.Context;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.database.sqlite.SQLiteConstraintException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.net.Uri;
import android.os.ParcelFileDescriptor;
import android.provider.BaseColumns;
import android.text.TextUtils;
public class ApgProvider extends ContentProvider {
private static final UriMatcher sUriMatcher = buildUriMatcher();
private static final int PUBLIC_KEY_RING = 101;
private static final int PUBLIC_KEY_RING_BY_ROW_ID = 102;
private static final int PUBLIC_KEY_RING_BY_MASTER_KEY_ID = 103;
private static final int PUBLIC_KEY_RING_BY_KEY_ID = 104;
private static final int PUBLIC_KEY_RING_BY_EMAILS = 105;
private static final int PUBLIC_KEY_RING_KEY = 111;
private static final int PUBLIC_KEY_RING_KEY_BY_ROW_ID = 112;
private static final int PUBLIC_KEY_RING_USER_ID = 121;
private static final int PUBLIC_KEY_RING_USER_ID_BY_ROW_ID = 122;
private static final int SECRET_KEY_RING = 201;
private static final int SECRET_KEY_RING_BY_ROW_ID = 202;
private static final int SECRET_KEY_RING_BY_MASTER_KEY_ID = 203;
private static final int SECRET_KEY_RING_BY_KEY_ID = 204;
private static final int SECRET_KEY_RING_BY_EMAILS = 205;
private static final int SECRET_KEY_RING_KEY = 211;
private static final int SECRET_KEY_RING_KEY_BY_ROW_ID = 212;
private static final int SECRET_KEY_RING_USER_ID = 221;
private static final int SECRET_KEY_RING_USER_ID_BY_ROW_ID = 222;
private static final int DATA_STREAM = 301;
/**
* Build and return a {@link UriMatcher} that catches all {@link Uri} variations supported by
* this {@link ContentProvider}.
*/
private static UriMatcher buildUriMatcher() {
final UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH);
final String authority = ApgContract.CONTENT_AUTHORITY;
/**
* public key rings
*
* <pre>
* key_rings/public
* key_rings/public/#
* key_rings/public/master_key_id/_
* key_rings/public/key_id/_
* key_rings/public/emails/_
* </pre>
*/
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_PUBLIC,
PUBLIC_KEY_RING);
matcher.addURI(authority,
ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_PUBLIC + "/#",
PUBLIC_KEY_RING_BY_ROW_ID);
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_PUBLIC + "/"
+ ApgContract.PATH_BY_MASTER_KEY_ID + "/*", PUBLIC_KEY_RING_BY_MASTER_KEY_ID);
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_PUBLIC + "/"
+ ApgContract.PATH_BY_KEY_ID + "/*", PUBLIC_KEY_RING_BY_KEY_ID);
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_PUBLIC + "/"
+ ApgContract.PATH_BY_EMAILS + "/*", PUBLIC_KEY_RING_BY_EMAILS);
/**
* public keys
*
* <pre>
* key_rings/public/#/keys
* key_rings/public/#/keys/#
* </pre>
*/
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_PUBLIC
+ "/#/" + ApgContract.PATH_KEYS, PUBLIC_KEY_RING_KEY);
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_PUBLIC
+ "/#/" + ApgContract.PATH_KEYS + "/#", PUBLIC_KEY_RING_KEY_BY_ROW_ID);
/**
* public user ids
*
* <pre>
* key_rings/public/#/user_ids
* key_rings/public/#/user_ids/#
* </pre>
*/
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_PUBLIC
+ "/#/" + ApgContract.PATH_USER_IDS, PUBLIC_KEY_RING_USER_ID);
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_PUBLIC
+ "/#/" + ApgContract.PATH_USER_IDS + "/#", PUBLIC_KEY_RING_USER_ID_BY_ROW_ID);
/**
* secret key rings
*
* <pre>
* key_rings/secret
* key_rings/secret/#
* key_rings/secret/master_key_id/_
* key_rings/secret/key_id/_
* key_rings/secret/emails/_
* </pre>
*/
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_SECRET,
SECRET_KEY_RING);
matcher.addURI(authority,
ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_SECRET + "/#",
SECRET_KEY_RING_BY_ROW_ID);
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_SECRET + "/"
+ ApgContract.PATH_BY_MASTER_KEY_ID + "/*", SECRET_KEY_RING_BY_MASTER_KEY_ID);
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_SECRET + "/"
+ ApgContract.PATH_BY_KEY_ID + "/*", SECRET_KEY_RING_BY_KEY_ID);
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_SECRET + "/"
+ ApgContract.PATH_BY_EMAILS + "/*", SECRET_KEY_RING_BY_EMAILS);
/**
* secret keys
*
* <pre>
* key_rings/secret/#/keys
* key_rings/secret/#/keys/#
* </pre>
*/
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_SECRET
+ "/#/" + ApgContract.PATH_KEYS, SECRET_KEY_RING_KEY);
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_SECRET
+ "/#/" + ApgContract.PATH_KEYS + "/#", SECRET_KEY_RING_KEY_BY_ROW_ID);
/**
* secret user ids
*
* <pre>
* key_rings/secret/#/user_ids
* key_rings/secret/#/user_ids/#
* </pre>
*/
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_SECRET
+ "/#/" + ApgContract.PATH_USER_IDS, SECRET_KEY_RING_USER_ID);
matcher.addURI(authority, ApgContract.BASE_KEY_RINGS + "/" + ApgContract.PATH_SECRET
+ "/#/" + ApgContract.PATH_USER_IDS + "/#", SECRET_KEY_RING_USER_ID_BY_ROW_ID);
/**
* data stream
*
* <pre>
* data/*
* </pre>
*/
matcher.addURI(authority, ApgContract.BASE_DATA + "/*", DATA_STREAM);
return matcher;
}
private ApgDatabase mApgDatabase;
/** {@inheritDoc} */
@Override
public boolean onCreate() {
final Context context = getContext();
mApgDatabase = new ApgDatabase(context);
return true;
}
/** {@inheritDoc} */
@Override
public String getType(Uri uri) {
final int match = sUriMatcher.match(uri);
switch (match) {
case PUBLIC_KEY_RING:
case PUBLIC_KEY_RING_BY_EMAILS:
return PublicKeyRings.CONTENT_TYPE;
case PUBLIC_KEY_RING_BY_ROW_ID:
case PUBLIC_KEY_RING_BY_MASTER_KEY_ID:
case PUBLIC_KEY_RING_BY_KEY_ID:
return PublicKeyRings.CONTENT_ITEM_TYPE;
case PUBLIC_KEY_RING_KEY:
return PublicKeys.CONTENT_TYPE;
case PUBLIC_KEY_RING_KEY_BY_ROW_ID:
return PublicKeys.CONTENT_ITEM_TYPE;
case PUBLIC_KEY_RING_USER_ID:
return PublicUserIds.CONTENT_TYPE;
case PUBLIC_KEY_RING_USER_ID_BY_ROW_ID:
return PublicUserIds.CONTENT_ITEM_TYPE;
case SECRET_KEY_RING:
case SECRET_KEY_RING_BY_EMAILS:
return SecretKeyRings.CONTENT_TYPE;
case SECRET_KEY_RING_BY_ROW_ID:
case SECRET_KEY_RING_BY_MASTER_KEY_ID:
case SECRET_KEY_RING_BY_KEY_ID:
return SecretKeyRings.CONTENT_ITEM_TYPE;
case SECRET_KEY_RING_KEY:
return SecretKeys.CONTENT_TYPE;
case SECRET_KEY_RING_KEY_BY_ROW_ID:
return SecretKeys.CONTENT_ITEM_TYPE;
case SECRET_KEY_RING_USER_ID:
return SecretUserIds.CONTENT_TYPE;
case SECRET_KEY_RING_USER_ID_BY_ROW_ID:
return SecretUserIds.CONTENT_ITEM_TYPE;
default:
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
}
/**
* Returns weather the key is a public or secret one
*
* @param uri
* @return
*/
private int getKeyType(int match) {
int type;
switch (match) {
case PUBLIC_KEY_RING:
case PUBLIC_KEY_RING_BY_MASTER_KEY_ID:
case PUBLIC_KEY_RING_BY_KEY_ID:
case PUBLIC_KEY_RING_BY_EMAILS:
case PUBLIC_KEY_RING_KEY:
case PUBLIC_KEY_RING_KEY_BY_ROW_ID:
case PUBLIC_KEY_RING_USER_ID:
case PUBLIC_KEY_RING_USER_ID_BY_ROW_ID:
type = KeyTypes.PUBLIC;
break;
case SECRET_KEY_RING:
case SECRET_KEY_RING_BY_MASTER_KEY_ID:
case SECRET_KEY_RING_BY_KEY_ID:
case SECRET_KEY_RING_BY_EMAILS:
case SECRET_KEY_RING_KEY:
case SECRET_KEY_RING_KEY_BY_ROW_ID:
case SECRET_KEY_RING_USER_ID:
case SECRET_KEY_RING_USER_ID_BY_ROW_ID:
type = KeyTypes.SECRET;
break;
default:
throw new IllegalArgumentException("Unknown match " + match);
}
return type;
}
/** {@inheritDoc} */
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
String sortOrder) {
Log.v(Constants.TAG, "query(uri=" + uri + ", proj=" + Arrays.toString(projection) + ")");
SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
SQLiteDatabase db = mApgDatabase.getReadableDatabase();
HashMap<String, String> projectionMap = new HashMap<String, String>();
int match = sUriMatcher.match(uri);
switch (match) {
case PUBLIC_KEY_RING_BY_ROW_ID:
case SECRET_KEY_RING_BY_ROW_ID:
qb.appendWhere(Tables.KEY_RINGS + "." + KeyRingsColumns.TYPE + " = "
+ getKeyType(match));
qb.appendWhere(Tables.KEY_RINGS + "." + BaseColumns._ID + " = ");
qb.appendWhereEscapeString(uri.getLastPathSegment());
// break omitted intentionally
case PUBLIC_KEY_RING_BY_MASTER_KEY_ID:
case SECRET_KEY_RING_BY_MASTER_KEY_ID:
qb.appendWhere(Tables.KEY_RINGS + "." + KeyRingsColumns.MASTER_KEY_ID + " = ");
qb.appendWhereEscapeString(uri.getLastPathSegment());
// break omitted intentionally
case PUBLIC_KEY_RING:
case SECRET_KEY_RING:
qb.setTables(Tables.KEY_RINGS + " INNER JOIN " + Tables.KEYS + " ON " + "("
+ Tables.KEY_RINGS + "." + BaseColumns._ID + " = " + Tables.KEYS + "."
+ KeysColumns.KEY_RING_ROW_ID + " AND " + Tables.KEYS + "."
+ KeysColumns.IS_MASTER_KEY + " = '1'" + ") " + " INNER JOIN "
+ Tables.USER_IDS + " ON " + "(" + Tables.KEYS + "." + BaseColumns._ID + " = "
+ Tables.USER_IDS + "." + UserIdsColumns.KEY_RING_ROW_ID + " AND "
+ Tables.USER_IDS + "." + UserIdsColumns.RANK + " = '0') ");
projectionMap.put(BaseColumns._ID, Tables.KEY_RINGS + "." + BaseColumns._ID);
projectionMap.put(KeyRingsColumns.MASTER_KEY_ID, Tables.KEY_RINGS + "."
+ KeyRingsColumns.MASTER_KEY_ID);
projectionMap.put(UserIdsColumns.USER_ID, Tables.USER_IDS + "."
+ UserIdsColumns.USER_ID);
if (TextUtils.isEmpty(sortOrder)) {
sortOrder = Tables.USER_IDS + "." + UserIdsColumns.USER_ID + " ASC";
}
break;
case SECRET_KEY_RING_BY_KEY_ID:
case PUBLIC_KEY_RING_BY_KEY_ID:
qb.appendWhere(Tables.KEY_RINGS + "." + KeyRingsColumns.TYPE + " = "
+ getKeyType(match));
qb.setTables(Tables.KEYS + " AS tmp INNER JOIN " + Tables.KEY_RINGS + " ON ("
+ Tables.KEY_RINGS + "." + BaseColumns._ID + " = " + "tmp."
+ KeysColumns.KEY_RING_ROW_ID + ")" + " INNER JOIN " + Tables.KEYS + " ON "
+ "(" + Tables.KEY_RINGS + "." + BaseColumns._ID + " = " + Tables.KEYS + "."
+ KeysColumns.KEY_RING_ROW_ID + " AND " + Tables.KEYS + "."
+ KeysColumns.IS_MASTER_KEY + " = '1'" + ") " + " INNER JOIN "
+ Tables.USER_IDS + " ON " + "(" + Tables.KEYS + "." + BaseColumns._ID + " = "
+ Tables.USER_IDS + "." + UserIdsColumns.KEY_RING_ROW_ID + " AND "
+ Tables.USER_IDS + "." + UserIdsColumns.RANK + " = '0') ");
projectionMap.put(BaseColumns._ID, Tables.KEY_RINGS + "." + BaseColumns._ID);
projectionMap.put(KeyRingsColumns.MASTER_KEY_ID, Tables.KEY_RINGS + "."
+ KeyRingsColumns.MASTER_KEY_ID);
projectionMap.put(UserIdsColumns.USER_ID, Tables.USER_IDS + "."
+ UserIdsColumns.USER_ID);
qb.appendWhere("tmp." + KeysColumns.KEY_ID + " = ");
qb.appendWhereEscapeString(uri.getLastPathSegment());
break;
case SECRET_KEY_RING_BY_EMAILS:
case PUBLIC_KEY_RING_BY_EMAILS:
qb.appendWhere(Tables.KEY_RINGS + "." + KeyRingsColumns.TYPE + " = "
+ getKeyType(match));
qb.setTables(Tables.KEY_RINGS + " INNER JOIN " + Tables.KEYS + " ON " + "("
+ Tables.KEY_RINGS + "." + BaseColumns._ID + " = " + Tables.KEYS + "."
+ KeysColumns.KEY_RING_ROW_ID + " AND " + Tables.KEYS + "."
+ KeysColumns.IS_MASTER_KEY + " = '1'" + ") " + " INNER JOIN "
+ Tables.USER_IDS + " ON " + "(" + Tables.KEYS + "." + BaseColumns._ID + " = "
+ Tables.USER_IDS + "." + UserIdsColumns.KEY_RING_ROW_ID + " AND "
+ Tables.USER_IDS + "." + UserIdsColumns.RANK + " = '0') ");
projectionMap.put(BaseColumns._ID, Tables.KEY_RINGS + "." + BaseColumns._ID);
projectionMap.put(KeyRingsColumns.MASTER_KEY_ID, Tables.KEY_RINGS + "."
+ KeyRingsColumns.MASTER_KEY_ID);
projectionMap.put(UserIdsColumns.USER_ID, Tables.USER_IDS + "."
+ UserIdsColumns.USER_ID);
String emails = uri.getLastPathSegment();
String chunks[] = emails.split(" *, *");
boolean gotCondition = false;
String emailWhere = "";
for (int i = 0; i < chunks.length; ++i) {
if (chunks[i].length() == 0) {
continue;
}
if (i != 0) {
emailWhere += " OR ";
}
emailWhere += "tmp." + UserIdsColumns.USER_ID + " LIKE ";
// match '*<email>', so it has to be at the *end* of the user id
emailWhere += DatabaseUtils.sqlEscapeString("%<" + chunks[i] + ">");
gotCondition = true;
}
if (gotCondition) {
qb.appendWhere("EXISTS (SELECT tmp." + BaseColumns._ID + " FROM " + Tables.USER_IDS
+ " AS tmp WHERE tmp." + UserIdsColumns.KEY_RING_ROW_ID + " = "
+ Tables.KEYS + "." + BaseColumns._ID + " AND (" + emailWhere + "))");
}
break;
case PUBLIC_KEY_RING_KEY_BY_ROW_ID:
case SECRET_KEY_RING_KEY_BY_ROW_ID:
String keyRowId = uri.getLastPathSegment();
qb.appendWhere(BaseColumns._ID + " = " + keyRowId);
// break omitted intentionally
case PUBLIC_KEY_RING_KEY:
case SECRET_KEY_RING_KEY:
qb.setTables(Tables.KEYS);
qb.appendWhere(KeysColumns.TYPE + " = " + getKeyType(match));
String foreignKeyRingRowId = uri.getPathSegments().get(2);
qb.appendWhere(KeysColumns.KEY_RING_ROW_ID + " = " + foreignKeyRingRowId);
break;
case PUBLIC_KEY_RING_USER_ID_BY_ROW_ID:
case SECRET_KEY_RING_USER_ID_BY_ROW_ID:
String userIdRowId = uri.getLastPathSegment();
qb.appendWhere(BaseColumns._ID + " = " + userIdRowId);
// break omitted intentionally
case PUBLIC_KEY_RING_USER_ID:
case SECRET_KEY_RING_USER_ID:
qb.setTables(Tables.USER_IDS);
String foreignKeyRowId = uri.getPathSegments().get(2);
qb.appendWhere(UserIdsColumns.KEY_RING_ROW_ID + " = " + foreignKeyRowId);
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
qb.setProjectionMap(projectionMap);
// If no sort order is specified use the default
String orderBy;
if (TextUtils.isEmpty(sortOrder)) {
orderBy = null;
} else {
orderBy = sortOrder;
}
Cursor c = qb.query(db, projection, selection, selectionArgs, null, null, orderBy);
// Tell the cursor what uri to watch, so it knows when its source data changes
c.setNotificationUri(getContext().getContentResolver(), uri);
return c;
}
/** {@inheritDoc} */
@Override
public Uri insert(Uri uri, ContentValues values) {
Log.d(Constants.TAG, "insert(uri=" + uri + ", values=" + values.toString() + ")");
final SQLiteDatabase db = mApgDatabase.getWritableDatabase();
Uri rowUri = null;
try {
final int match = sUriMatcher.match(uri);
switch (match) {
case PUBLIC_KEY_RING:
values.put(PublicKeyRings.TYPE, KeyTypes.PUBLIC);
db.insertOrThrow(Tables.KEY_RINGS, null, values);
rowUri = PublicKeyRings.buildPublicKeyRingsUri(values
.getAsString(PublicKeyRings._ID));
break;
case PUBLIC_KEY_RING_KEY:
values.put(PublicKeys.TYPE, KeyTypes.PUBLIC);
db.insertOrThrow(Tables.KEYS, null, values);
rowUri = PublicKeys.buildPublicKeysUri(values.getAsString(PublicKeys._ID));
break;
case PUBLIC_KEY_RING_USER_ID:
db.insertOrThrow(Tables.USER_IDS, null, values);
rowUri = PublicUserIds.buildPublicUserIdsUri(values.getAsString(PublicUserIds._ID));
break;
case SECRET_KEY_RING:
values.put(SecretKeyRings.TYPE, KeyTypes.SECRET);
db.insertOrThrow(Tables.KEY_RINGS, null, values);
rowUri = SecretKeyRings.buildSecretKeyRingsUri(values
.getAsString(SecretKeyRings._ID));
break;
case SECRET_KEY_RING_KEY:
values.put(SecretKeys.TYPE, KeyTypes.SECRET);
db.insertOrThrow(Tables.KEYS, null, values);
rowUri = SecretKeys.buildSecretKeysUri(values.getAsString(SecretKeys._ID));
break;
case SECRET_KEY_RING_USER_ID:
db.insertOrThrow(Tables.USER_IDS, null, values);
rowUri = SecretUserIds.buildSecretUserIdsUri(values.getAsString(SecretUserIds._ID));
break;
default:
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
} catch (SQLiteConstraintException e) {
Log.e(Constants.TAG, "Constraint exception on insert! Entry already existing?");
}
// notify of changes in db
getContext().getContentResolver().notifyChange(uri, null);
return rowUri;
}
/** {@inheritDoc} */
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
Log.v(Constants.TAG, "delete(uri=" + uri + ")");
final SQLiteDatabase db = mApgDatabase.getWritableDatabase();
int count;
final int match = sUriMatcher.match(uri);
switch (match) {
case PUBLIC_KEY_RING_BY_ROW_ID:
// corresponding keys and userIds are deleted by ON DELETE CASCADE
count = db.delete(Tables.KEY_RINGS,
buildDefaultKeyRingsSelection(uri, KeyTypes.PUBLIC, selection), selectionArgs);
break;
case SECRET_KEY_RING_BY_ROW_ID:
// corresponding keys and userIds are deleted by ON DELETE CASCADE
count = db.delete(Tables.KEY_RINGS,
buildDefaultKeyRingsSelection(uri, KeyTypes.SECRET, selection), selectionArgs);
break;
case PUBLIC_KEY_RING_KEY_BY_ROW_ID:
count = db.delete(Tables.KEYS,
buildDefaultKeysSelection(uri, KeyTypes.PUBLIC, selection), selectionArgs);
case SECRET_KEY_RING_KEY_BY_ROW_ID:
count = db.delete(Tables.KEYS,
buildDefaultKeysSelection(uri, KeyTypes.SECRET, selection), selectionArgs);
case PUBLIC_KEY_RING_USER_ID_BY_ROW_ID:
count = db.delete(Tables.KEYS, buildDefaultUserIdsSelection(uri, selection),
selectionArgs);
case SECRET_KEY_RING_USER_ID_BY_ROW_ID:
count = db.delete(Tables.KEYS, buildDefaultUserIdsSelection(uri, selection),
selectionArgs);
default:
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
// notify of changes in db
getContext().getContentResolver().notifyChange(uri, null);
return count;
}
/** {@inheritDoc} */
@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
Log.v(Constants.TAG, "update(uri=" + uri + ", values=" + values.toString() + ")");
final SQLiteDatabase db = mApgDatabase.getWritableDatabase();
int count = 0;
try {
final int match = sUriMatcher.match(uri);
switch (match) {
case PUBLIC_KEY_RING_BY_ROW_ID:
count = db.update(Tables.KEY_RINGS, values,
buildDefaultKeyRingsSelection(uri, KeyTypes.PUBLIC, selection),
selectionArgs);
break;
case SECRET_KEY_RING_BY_ROW_ID:
count = db.update(Tables.KEY_RINGS, values,
buildDefaultKeyRingsSelection(uri, KeyTypes.SECRET, selection),
selectionArgs);
break;
case PUBLIC_KEY_RING_KEY_BY_ROW_ID:
count = db.update(Tables.KEYS, values,
buildDefaultKeysSelection(uri, KeyTypes.PUBLIC, selection), selectionArgs);
break;
case SECRET_KEY_RING_KEY_BY_ROW_ID:
count = db.update(Tables.KEYS, values,
buildDefaultKeysSelection(uri, KeyTypes.SECRET, selection), selectionArgs);
break;
case PUBLIC_KEY_RING_USER_ID_BY_ROW_ID:
count = db.update(Tables.USER_IDS, values,
buildDefaultUserIdsSelection(uri, selection), selectionArgs);
break;
case SECRET_KEY_RING_USER_ID_BY_ROW_ID:
count = db.update(Tables.USER_IDS, values,
buildDefaultUserIdsSelection(uri, selection), selectionArgs);
break;
default:
throw new UnsupportedOperationException("Unknown uri: " + uri);
}
} catch (SQLiteConstraintException e) {
Log.e(Constants.TAG, "Constraint exception on update! Entry already existing?");
}
// notify of changes in db
getContext().getContentResolver().notifyChange(uri, null);
return count;
}
/**
* Build default selection statement for KeyRings. If no extra selection is specified only build
* where clause with rowId
*
* @param uri
* @param selection
* @return
*/
private String buildDefaultKeyRingsSelection(Uri uri, Integer keyType, String selection) {
String rowId = uri.getLastPathSegment();
String andType = "";
if (keyType != null) {
andType = " AND " + KeyRingsColumns.TYPE + "=" + keyType;
}
String andSelection = "";
if (!TextUtils.isEmpty(selection)) {
andSelection = " AND (" + selection + ")";
}
return BaseColumns._ID + "=" + rowId + andType + andSelection;
}
/**
* Build default selection statement for Keys. If no extra selection is specified only build
* where clause with rowId
*
* @param uri
* @param selection
* @return
*/
private String buildDefaultKeysSelection(Uri uri, Integer keyType, String selection) {
String rowId = uri.getLastPathSegment();
String foreignKeyRingRowId = uri.getPathSegments().get(2);
String andForeignKeyRing = " AND " + KeysColumns.KEY_RING_ROW_ID + " = "
+ foreignKeyRingRowId;
String andType = "";
if (keyType != null) {
andType = " AND " + KeysColumns.TYPE + "=" + keyType;
}
String andSelection = "";
if (!TextUtils.isEmpty(selection)) {
andSelection = " AND (" + selection + ")";
}
return BaseColumns._ID + "=" + rowId + andForeignKeyRing + andType + andSelection;
}
/**
* Build default selection statement for UserIds. If no extra selection is specified only build
* where clause with rowId
*
* @param uri
* @param selection
* @return
*/
private String buildDefaultUserIdsSelection(Uri uri, String selection) {
String rowId = uri.getLastPathSegment();
String foreignKeyRingRowId = uri.getPathSegments().get(2);
String andForeignKeyRing = " AND " + KeysColumns.KEY_RING_ROW_ID + " = "
+ foreignKeyRingRowId;
String andSelection = "";
if (!TextUtils.isEmpty(selection)) {
andSelection = " AND (" + selection + ")";
}
return BaseColumns._ID + "=" + rowId + andForeignKeyRing + andSelection;
}
@Override
public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
int match = sUriMatcher.match(uri);
if (match != DATA_STREAM) {
throw new FileNotFoundException();
}
String fileName = uri.getLastPathSegment();
File file = new File(getContext().getFilesDir().getAbsolutePath(), fileName);
return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
}
}