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.Context;
  43 import android.net.Uri;
  44 import android.text.TextUtils;
  45 import android.util.Log;
  46 import eu.alefzero.owncloud.authenticator.AccountAuthenticator;
  47 import eu.alefzero.owncloud.datamodel.OCFile;
  48 import eu.alefzero.webdav.HttpPropFind;
  49 import eu.alefzero.webdav.TreeNode;
  50 import eu.alefzero.webdav.TreeNode.NodeProperty;
  51 import eu.alefzero.webdav.WebdavClient;
  52 import eu.alefzero.webdav.WebdavUtils;
  53
  54 /**
  55  * Base SyncAdapter for OwnCloud Designed to be subclassed for the concrete
  56  * SyncAdapter, like ConcatsSync, CalendarSync, FileSync etc..
  57  *
  58  * @author sassman
  59  *
  60  */
  61 public abstract class AbstractOwnCloudSyncAdapter extends
  62                 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         private static String TAG = "AbstractOwnCloudSyncAdapter";
  72
  73         public AbstractOwnCloudSyncAdapter(Context context, boolean autoInitialize) {
  74                 super(context, autoInitialize);
  75                 this.setAccountManager(AccountManager.get(context));
  76         }
  77
  78         public AccountManager getAccountManager() {
  79                 return accountManager;
  80         }
  81
  82         public void setAccountManager(AccountManager accountManager) {
  83                 this.accountManager = accountManager;
  84         }
  85
  86         public Account getAccount() {
  87                 return account;
  88         }
  89
  90         public void setAccount(Account account) {
  91                 this.account = account;
  92         }
  93
  94         public ContentProviderClient getContentProvider() {
  95                 return contentProvider;
  96         }
  97
  98         public void setContentProvider(ContentProviderClient contentProvider) {
  99                 this.contentProvider = contentProvider;
 100         }
 101
 102         public Date getLastUpdated() {
 103                 return lastUpdated;
 104         }
 105
 106         public void setLastUpdated(Date lastUpdated) {
 107                 this.lastUpdated = lastUpdated;
 108         }
 109
 110         protected ConnectionKeepAliveStrategy getKeepAliveStrategy() {
 111                 return new ConnectionKeepAliveStrategy() {
 112                         public long getKeepAliveDuration(HttpResponse response,
 113                                         HttpContext context) {
 114                                 // Change keep alive straategy basing on response: ie
 115                                 // forbidden/not found/etc
 116                                 // should have keep alive 0
 117                                 // default return: 5s
 118                                 int statusCode = response.getStatusLine().getStatusCode();
 119
 120                                 // HTTP 400, 500 Errors as well as HTTP 118 - Connection timed
 121                                 // out
 122                                 if ((statusCode >= 400 && statusCode <= 418)
 123                                                 || (statusCode >= 421 && statusCode <= 426)
 124                                                 || (statusCode >= 500 && statusCode <= 510)
 125                                                 || statusCode == 118) {
 126                                         return 0;
 127                                 }
 128
 129                                 return 5 * 1000;
 130                         }
 131                 };
 132         }
 133
 134         protected HttpPropFind getPropFindQuery()
 135                         throws OperationCanceledException, AuthenticatorException,
 136                         IOException {
 137                 HttpPropFind query = new HttpPropFind(getUri().toString());
 138                 query.setHeader("Content-type", "text/xml");
 139                 query.setHeader("User-Agent", "Android-ownCloud");
 140                 return query;
 141         }
 142
 143         protected HttpResponse fireRawRequest(HttpRequest query)
 144                         throws ClientProtocolException, OperationCanceledException,
 145                         AuthenticatorException, IOException {
 146                 BasicHttpContext httpContext = new BasicHttpContext();
 147                 BasicScheme basicAuth = new BasicScheme();
 148                 httpContext.setAttribute("preemptive-auth", basicAuth);
 149
 150                 HttpResponse response = getClient().execute(mHost, query, httpContext);
 151                 return response;
 152         }
 153
 154         protected TreeNode fireRequest(HttpRequest query)
 155                         throws ClientProtocolException, OperationCanceledException,
 156                         AuthenticatorException, IOException {
 157                 HttpResponse response = fireRawRequest(query);
 158
 159                 TreeNode root = new TreeNode();
 160                 root.setProperty(TreeNode.NodeProperty.NAME, "");
 161                 this.parseResponse(response, getUri(), getClient(), mHost,
 162                                 root.getChildList(), false, 0);
 163                 return root;
 164         }
 165
 166         protected Uri getUri() {
 167                 return Uri.parse(this.getAccountManager().getUserData(getAccount(),
 168                                 AccountAuthenticator.KEY_OC_URL));
 169         }
 170
 171         private DefaultHttpClient getClient() throws OperationCanceledException,
 172                         AuthenticatorException, IOException {
 173                 if (mClient == null) {
 174                         String username = getAccount().name.split("@")[0];
 175                         String password = this.getAccountManager().blockingGetAuthToken(
 176                                         getAccount(), AccountAuthenticator.AUTH_TOKEN_TYPE, true);
 177                         if (this.getAccountManager().getUserData(getAccount(),
 178                                         AccountAuthenticator.KEY_OC_URL) == null) {
 179                                 throw new UnknownHostException();
 180                         }
 181                         Uri uri = getUri();
 182
 183                         mClient = new WebdavClient(uri);
 184                         mClient.setCredentials(username, password);
 185                         mClient.allowUnsignedCertificates();
 186                         mHost = mClient.getTargetHost();
 187                 }
 188
 189                 return mClient.getHttpClient();
 190         }
 191
 192         private void parseResponse(HttpResponse resp, Uri uri,
 193                         DefaultHttpClient client, HttpHost targetHost,
 194                         LinkedList<TreeNode> insertList, boolean sf, long parent_id)
 195                         throws IOException, OperationCanceledException,
 196                         AuthenticatorException {
 197                 boolean skipFirst = sf, override_parent = !sf;
 198                 for (TreeNode n : WebdavUtils.parseResponseToNodes(resp.getEntity()
 199                                 .getContent())) {
 200                         if (skipFirst) {
 201                                 skipFirst = false;
 202                                 continue;
 203                         }
 204                         String path = n.stripPathFromFilename(uri.getPath());
 205
 206                         long mod = n.getProperty(NodeProperty.LAST_MODIFIED_DATE) == null ? 0
 207                                         : Long.parseLong(n
 208                                                         .getProperty(NodeProperty.LAST_MODIFIED_DATE));
 209                         OCFile file = new OCFile(getContentProvider(), getAccount(),
 210                                         n.getProperty(NodeProperty.PATH));
 211                         if (file.fileExists() && file.getModificationTimestamp() >= mod) {
 212                                 Log.d(TAG, "No update for file/dir " + file.getFileName()
 213                                                 + " is needed");
 214                         } else {
 215                                 Log.d(TAG, "File " + n.getProperty(NodeProperty.PATH)
 216                                                 + " will be "
 217                                                 + (file.fileExists() ? "updated" : "created"));
 218                                 long len = n.getProperty(NodeProperty.CONTENT_LENGTH) == null ? 0
 219                                                 : Long.parseLong(n
 220                                                                 .getProperty(NodeProperty.CONTENT_LENGTH));
 221                                 long create = n.getProperty(NodeProperty.CREATE_DATE) == null ? 0
 222                                                 : Long.parseLong(n
 223                                                                 .getProperty(NodeProperty.CREATE_DATE));
 224                                 file = OCFile.createNewFile(getContentProvider(), getAccount(),
 225                                                 n.getProperty(NodeProperty.PATH), len, create, mod,
 226                                                 n.getProperty(NodeProperty.RESOURCE_TYPE), parent_id);
 227                                 file.save();
 228                                 if (override_parent) {
 229                                         parent_id = file.getFileId();
 230                                         override_parent = false;
 231                                 }
 232                         }
 233
 234                         if (!TextUtils.isEmpty(n.getProperty(NodeProperty.NAME))
 235                                         && n.getProperty(NodeProperty.RESOURCE_TYPE).equals("DIR")) {
 236
 237                                 HttpPropFind method = new HttpPropFind(uri.getPath() + path
 238                                                 + n.getProperty(NodeProperty.NAME).replace(" ", "%20")
 239                                                 + "/");
 240                                 HttpResponse response = fireRawRequest(method);
 241                                 parseResponse(response, uri, client, targetHost,
 242                                                 n.getChildList(), true, file.getFileId());
 243                         }
 244                 }
 245         }
 246 }