274 lines
8.9 KiB
Java
274 lines
8.9 KiB
Java
/*
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* Copyright (C) 2012 Dominik Schürmann <dominik@dominikschuermann.de>
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* Copyright (C) 2010-2011 K-9 Mail Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.sufficientlysecure.keychain.integration;
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import android.content.ContentUris;
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import android.content.Context;
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import android.database.Cursor;
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import android.net.Uri;
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import android.widget.Toast;
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public class KeychainContentProviderHelper {
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public static final String AUTHORITY = Constants.KEYCHAIN_PACKAGE_NAME;
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public static final Uri CONTENT_URI_PUBLIC_KEY_RING_BY_KEY_ID = Uri.parse("content://"
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+ AUTHORITY + "/key_rings/public/key_id/");
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public static final Uri CONTENT_URI_PUBLIC_KEY_RING_BY_EMAILS = Uri.parse("content://"
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+ AUTHORITY + "/key_rings/public/emails/");
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public static final Uri CONTENT_URI_PUBLIC_KEY_RING_BY_LIKE_EMAIL = Uri.parse("content://"
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+ AUTHORITY + "/key_rings/public/like_email/");
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public static final Uri CONTENT_URI_SECRET_KEY_RING_BY_KEY_ID = Uri.parse("content://"
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+ AUTHORITY + "/key_rings/secret/key_id/");
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public static final Uri CONTENT_URI_SECRET_KEY_RING_BY_EMAILS = Uri.parse("content://"
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+ AUTHORITY + "/key_rings/secret/emails/");
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public static final Uri CONTENT_URI_SECRET_KEY_RING_BY_LIKE_EMAIL = Uri.parse("content://"
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+ AUTHORITY + "/key_rings/secret/like_email/");
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private Context mContext;
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public KeychainContentProviderHelper(Context context) {
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this.mContext = context;
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}
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/**
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* Get secret key ids based on a given email.
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*
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* @param context
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* @param email
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* The email in question.
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* @return key ids
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*/
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public long[] getSecretKeyringIdsByEmail(String email) {
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long ids[] = null;
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try {
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Uri contentUri = Uri.withAppendedPath(CONTENT_URI_SECRET_KEY_RING_BY_EMAILS, email);
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Cursor c = mContext.getContentResolver().query(contentUri,
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new String[] { "master_key_id" }, null, null, null);
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if (c != null && c.getCount() > 0) {
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ids = new long[c.getCount()];
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while (c.moveToNext()) {
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ids[c.getPosition()] = c.getLong(0);
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}
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}
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if (c != null) {
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c.close();
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}
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} catch (SecurityException e) {
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insufficientPermissions();
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}
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return ids;
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}
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/**
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* Get secret key ids based on a given String that is part of the email.
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*
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* Example: String: example, then emails: test@example.com, example@google.com are returned
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*
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* @param context
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* @param email
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* The email in question.
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* @return key ids
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*/
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public long[] getSecretKeyringIdsByLikeEmail(String likeEmail) {
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long ids[] = null;
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try {
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Uri contentUri = Uri.withAppendedPath(CONTENT_URI_SECRET_KEY_RING_BY_LIKE_EMAIL,
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likeEmail);
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Cursor c = mContext.getContentResolver().query(contentUri,
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new String[] { "master_key_id" }, null, null, null);
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if (c != null && c.getCount() > 0) {
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ids = new long[c.getCount()];
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while (c.moveToNext()) {
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ids[c.getPosition()] = c.getLong(0);
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}
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}
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if (c != null) {
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c.close();
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}
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} catch (SecurityException e) {
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insufficientPermissions();
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}
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return ids;
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}
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/**
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* Get public key ids based on a given email.
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*
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* @param context
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* @param email
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* The email in question.
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* @return key ids
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*/
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public long[] getPublicKeyringIdsByEmail(String email) {
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long ids[] = null;
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try {
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Uri contentUri = Uri.withAppendedPath(CONTENT_URI_PUBLIC_KEY_RING_BY_EMAILS, email);
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Cursor c = mContext.getContentResolver().query(contentUri,
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new String[] { "master_key_id" }, null, null, null);
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if (c != null && c.getCount() > 0) {
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ids = new long[c.getCount()];
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while (c.moveToNext()) {
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ids[c.getPosition()] = c.getLong(0);
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}
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}
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if (c != null) {
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c.close();
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}
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} catch (SecurityException e) {
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insufficientPermissions();
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}
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return ids;
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}
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/**
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* Get public key ids based on a given String that is part of the email.
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*
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* Example: String: example, then emails: test@example.com, example@google.com are returned
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*
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* @param context
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* @param email
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* The email in question.
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* @return key ids
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*/
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public long[] getPublicKeyringIdsByLikeEmail(String likeEmail) {
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long ids[] = null;
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try {
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Uri contentUri = Uri.withAppendedPath(CONTENT_URI_PUBLIC_KEY_RING_BY_LIKE_EMAIL,
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likeEmail);
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Cursor c = mContext.getContentResolver().query(contentUri,
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new String[] { "master_key_id" }, null, null, null);
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if (c != null && c.getCount() > 0) {
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ids = new long[c.getCount()];
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while (c.moveToNext()) {
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ids[c.getPosition()] = c.getLong(0);
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}
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}
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if (c != null) {
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c.close();
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}
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} catch (SecurityException e) {
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insufficientPermissions();
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}
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return ids;
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}
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/**
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* Find out if a given email has a secret key.
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*
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* @param context
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* @param email
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* The email in question.
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* @return true if there is a secret key for this email.
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*/
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public boolean hasSecretKeyringByEmail(String email) {
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try {
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Uri contentUri = Uri.withAppendedPath(CONTENT_URI_SECRET_KEY_RING_BY_EMAILS, email);
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Cursor c = mContext.getContentResolver().query(contentUri,
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new String[] { "master_key_id" }, null, null, null);
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if (c != null && c.getCount() > 0) {
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c.close();
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return true;
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}
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if (c != null) {
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c.close();
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}
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} catch (SecurityException e) {
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insufficientPermissions();
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}
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return false;
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}
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/**
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* Find out if a given email has a public key.
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*
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* @param context
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* @param email
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* The email in question.
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* @return true if there is a public key for this email.
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*/
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public boolean hasPublicKeyringByEmail(String email) {
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try {
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Uri contentUri = Uri.withAppendedPath(CONTENT_URI_PUBLIC_KEY_RING_BY_EMAILS, email);
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Cursor c = mContext.getContentResolver().query(contentUri,
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new String[] { "master_key_id" }, null, null, null);
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if (c != null && c.getCount() > 0) {
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c.close();
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return true;
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}
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if (c != null) {
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c.close();
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}
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} catch (SecurityException e) {
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insufficientPermissions();
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}
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return false;
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}
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/**
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* Get the user id based on the key id.
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*
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* @param context
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* @param keyId
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* @return user id
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*/
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public String getUserId(long keyId, boolean secretKeyrings) {
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String userId = null;
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try {
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Uri contentUri = null;
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if (secretKeyrings) {
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contentUri = ContentUris.withAppendedId(CONTENT_URI_SECRET_KEY_RING_BY_KEY_ID,
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keyId);
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} else {
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contentUri = ContentUris.withAppendedId(CONTENT_URI_PUBLIC_KEY_RING_BY_KEY_ID,
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keyId);
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}
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Cursor c = mContext.getContentResolver().query(contentUri, new String[] { "user_id" },
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null, null, null);
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if (c != null && c.moveToFirst()) {
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userId = c.getString(0);
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}
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if (c != null) {
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c.close();
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}
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} catch (SecurityException e) {
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insufficientPermissions();
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}
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if (userId == null) {
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userId = "unknown";
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}
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return userId;
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}
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private void insufficientPermissions() {
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Toast.makeText(mContext, "Permission to access APG Provider is missing!", Toast.LENGTH_LONG)
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.show();
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}
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}
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