src/eu/alefzero/owncloud/syncadapter/AbstractOwnCloudSyncAdapter.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation, either version 3 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package eu.alefzero.owncloud.syncadapter;
  20
  21 import java.io.IOException;
  22 import java.net.UnknownHostException;
  23 import java.util.Date;
  24 import java.util.LinkedList;
  25
  26 import org.apache.http.HttpHost;
  27 import org.apache.http.HttpRequest;
  28 import org.apache.http.HttpResponse;
  29 import org.apache.http.client.ClientProtocolException;
  30 import org.apache.http.conn.ConnectionKeepAliveStrategy;
  31 import org.apache.http.impl.auth.BasicScheme;
  32 import org.apache.http.impl.client.DefaultHttpClient;
  33 import org.apache.http.protocol.BasicHttpContext;
  34 import org.apache.http.protocol.HttpContext;
  35
  36 import android.accounts.Account;
  37 import android.accounts.AccountManager;
  38 import android.accounts.AuthenticatorException;
  39 import android.accounts.OperationCanceledException;
  40 import android.content.AbstractThreadedSyncAdapter;
  41 import android.content.ContentProviderClient;
  42 import android.content.ContentResolver;
  43 import android.content.Context;
  44 import android.net.Uri;
  45 import android.text.TextUtils;
  46 import android.util.Log;
  47 import eu.alefzero.owncloud.authenticator.AccountAuthenticator;
  48 import eu.alefzero.owncloud.datamodel.OCFile;
  49 import eu.alefzero.webdav.HttpPropFind;
  50 import eu.alefzero.webdav.TreeNode;
  51 import eu.alefzero.webdav.WebdavClient;
  52 import eu.alefzero.webdav.WebdavUtils;
  53 import eu.alefzero.webdav.TreeNode.NodeProperty;
  54
  55 /**
  56  * Base SyncAdapter for OwnCloud
  57  * Designed to be subclassed for the concreete SyncAdapter, like ConcatsSync, CalendarSync, FileSync etc..
  58  *
  59  * @author sassman
  60  *
  61  */
  62 public abstract class AbstractOwnCloudSyncAdapter extends AbstractThreadedSyncAdapter {
  63
  64         private AccountManager accountManager;
  65         private Account account;
  66         private ContentProviderClient contentProvider;
  67         private Date lastUpdated;
  68
  69         private HttpHost mHost;
  70         private WebdavClient mClient = null;
  71
  72         public AbstractOwnCloudSyncAdapter(Context context, boolean autoInitialize) {
  73                 super(context, autoInitialize);
  74                 this.setAccountManager(AccountManager.get(context));
  75         }
  76
  77         public AccountManager getAccountManager() {
  78                 return accountManager;
  79         }
  80
  81         public void setAccountManager(AccountManager accountManager) {
  82                 this.accountManager = accountManager;
  83         }
  84
  85         public Account getAccount() {
  86                 return account;
  87         }
  88
  89         public void setAccount(Account account) {
  90                 this.account = account;
  91         }
  92
  93         public ContentProviderClient getContentProvider() {
  94                 return contentProvider;
  95         }
  96
  97         public void setContentProvider(ContentProviderClient contentProvider) {
  98                 this.contentProvider = contentProvider;
  99         }
 100
 101         public Date getLastUpdated() {
 102                 return lastUpdated;
 103         }
 104
 105         public void setLastUpdated(Date lastUpdated) {
 106                 this.lastUpdated = lastUpdated;
 107         }
 108
 109         protected ConnectionKeepAliveStrategy getKeepAliveStrategy() {
 110                 return new ConnectionKeepAliveStrategy() {
 111                         public long getKeepAliveDuration(HttpResponse response, HttpContext context) {
 112                                 // TODO: change keep alive straategy basing on response: ie forbidden/not found/etc
 113                                 // should have keep alive 0
 114                                 // default return: 5s
 115                                 return 5 * 1000;
 116                         }
 117                 };
 118         }
 119
 120         protected HttpPropFind getPropFindQuery() throws OperationCanceledException, AuthenticatorException, IOException {
 121                 HttpPropFind query = new HttpPropFind(getUri().toString());
 122                 query.setHeader("Content-type", "text/xml");
 123                 query.setHeader("User-Agent", "Android-ownCloud");
 124                 return query;
 125         }
 126
 127         protected HttpResponse fireRawRequest(HttpRequest query) throws ClientProtocolException, OperationCanceledException, AuthenticatorException, IOException {
 128             BasicHttpContext httpContext = new BasicHttpContext();
 129         BasicScheme basicAuth = new BasicScheme();
 130         httpContext.setAttribute("preemptive-auth", basicAuth);
 131
 132         HttpResponse response = getClient().execute(mHost, query, httpContext);
 133         return response;
 134         }
 135
 136         protected TreeNode fireRequest(HttpRequest query) throws ClientProtocolException, OperationCanceledException, AuthenticatorException, IOException {
 137                 HttpResponse response = fireRawRequest(query);
 138
 139                 TreeNode root = new TreeNode();
 140                 root.setProperty(TreeNode.NodeProperty.NAME, "");
 141                 this.parseResponse(response, getUri(), getClient(), mHost, root.getChildList(), false, 0);
 142                 return root;
 143         }
 144
 145         protected Uri getUri() {
 146                 return Uri.parse(this.getAccountManager().getUserData(getAccount(), AccountAuthenticator.KEY_OC_URL));
 147         }
 148
 149         private DefaultHttpClient getClient() throws OperationCanceledException, AuthenticatorException, IOException {
 150                 if(mClient == null) {
 151                         String username = getAccount().name.split("@")[0];
 152                         String password = this.getAccountManager().blockingGetAuthToken(getAccount(), AccountAuthenticator.AUTH_TOKEN_TYPE, true);
 153                         if (this.getAccountManager().getUserData(getAccount(), AccountAuthenticator.KEY_OC_URL) == null) {
 154                                 throw new UnknownHostException();
 155                         }
 156                         Uri uri = getUri();
 157
 158                         mClient = new WebdavClient(uri);
 159                         mClient.setCredentials(username, password);
 160                         mClient.allowUnsignedCertificates();
 161                         mHost = mClient.getTargetHost();
 162                 }
 163
 164                 return mClient.getHttpClient();
 165         }
 166
 167         private void parseResponse(HttpResponse resp, Uri uri, DefaultHttpClient client, HttpHost targetHost, LinkedList<TreeNode> insertList, boolean sf, long parent_id) throws IOException, OperationCanceledException, AuthenticatorException {
 168                 boolean skipFirst = sf, override_parent = !sf;
 169                 for (TreeNode n :WebdavUtils.parseResponseToNodes(resp.getEntity().getContent())) {
 170                   if (skipFirst) {
 171         skipFirst = false;
 172         continue;
 173       }
 174                         String path = n.stripPathFromFilename(uri.getPath());
 175                         OCFile new_file = OCFile.createNewFile(getContentProvider(),
 176           getAccount(),
 177           n.getProperty(NodeProperty.PATH),
 178           0,//Long.parseLong(n.getProperty(NodeProperty.CONTENT_LENGTH)),
 179           0,//Long.parseLong(n.getProperty(NodeProperty.CREATE_DATE)),
 180           0,//Long.parseLong(n.getProperty(NodeProperty.LAST_MODIFIED_DATE)),
 181           n.getProperty(NodeProperty.RESOURCE_TYPE),
 182           parent_id);
 183                         new_file.save();
 184                         if (override_parent) {
 185                           parent_id = new_file.getFileId();
 186                           override_parent = false;
 187                         }
 188
 189                         if (!TextUtils.isEmpty(n.getProperty(NodeProperty.NAME)) &&
 190                                         n.getProperty(NodeProperty.RESOURCE_TYPE).equals("DIR")) {
 191
 192                             HttpPropFind method = new HttpPropFind(uri.getPath() + path + n.getProperty(NodeProperty.NAME).replace(" ", "%20") + "/");
 193                                 HttpResponse response = fireRawRequest(method);
 194                                 parseResponse(response, uri, client, targetHost, n.getChildList(), true, new_file.getFileId());
 195                         }
 196                 }
 197         }
 198 }