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 eu.alefzero.owncloud.authenticator.AccountAuthenticator;
  46 import eu.alefzero.owncloud.datamodel.OCFile;
  47 import eu.alefzero.webdav.HttpPropFind;
  48 import eu.alefzero.webdav.TreeNode;
  49 import eu.alefzero.webdav.TreeNode.NodeProperty;
  50 import eu.alefzero.webdav.WebdavClient;
  51 import eu.alefzero.webdav.WebdavUtils;
  52
  53 /**
  54  * Base SyncAdapter for OwnCloud
  55  * Designed to be subclassed for the concrete SyncAdapter, like ConcatsSync, CalendarSync, FileSync etc..
  56  *
  57  * @author sassman
  58  *
  59  */
  60 public abstract class AbstractOwnCloudSyncAdapter extends AbstractThreadedSyncAdapter {
  61
  62         private AccountManager accountManager;
  63         private Account account;
  64         private ContentProviderClient contentProvider;
  65         private Date lastUpdated;
  66
  67         private HttpHost mHost;
  68         private WebdavClient mClient = null;
  69
  70         public AbstractOwnCloudSyncAdapter(Context context, boolean autoInitialize) {
  71                 super(context, autoInitialize);
  72                 this.setAccountManager(AccountManager.get(context));
  73         }
  74
  75         public AccountManager getAccountManager() {
  76                 return accountManager;
  77         }
  78
  79         public void setAccountManager(AccountManager accountManager) {
  80                 this.accountManager = accountManager;
  81         }
  82
  83         public Account getAccount() {
  84                 return account;
  85         }
  86
  87         public void setAccount(Account account) {
  88                 this.account = account;
  89         }
  90
  91         public ContentProviderClient getContentProvider() {
  92                 return contentProvider;
  93         }
  94
  95         public void setContentProvider(ContentProviderClient contentProvider) {
  96                 this.contentProvider = contentProvider;
  97         }
  98
  99         public Date getLastUpdated() {
 100                 return lastUpdated;
 101         }
 102
 103         public void setLastUpdated(Date lastUpdated) {
 104                 this.lastUpdated = lastUpdated;
 105         }
 106
 107         protected ConnectionKeepAliveStrategy getKeepAliveStrategy() {
 108                 return new ConnectionKeepAliveStrategy() {
 109                         public long getKeepAliveDuration(HttpResponse response, HttpContext context) {
 110                                 // Change keep alive straategy basing on response: ie forbidden/not found/etc
 111                                 // should have keep alive 0
 112                                 // default return: 5s
 113                                 int statusCode = response.getStatusLine().getStatusCode();
 114
 115                                 // HTTP 400, 500 Errors as well as HTTP 118 - Connection timed out
 116                                 if((statusCode >= 400 && statusCode <= 418) ||
 117                                                 (statusCode >= 421 && statusCode <= 426) ||
 118                                                 (statusCode >= 500 && statusCode <= 510 ) ||
 119                                                 statusCode == 118) {
 120                                         return 0;
 121                                 }
 122
 123                                 return 5 * 1000;
 124                         }
 125                 };
 126         }
 127
 128         protected HttpPropFind getPropFindQuery() throws OperationCanceledException, AuthenticatorException, IOException {
 129                 HttpPropFind query = new HttpPropFind(getUri().toString());
 130                 query.setHeader("Content-type", "text/xml");
 131                 query.setHeader("User-Agent", "Android-ownCloud");
 132                 return query;
 133         }
 134
 135         protected HttpResponse fireRawRequest(HttpRequest query) throws ClientProtocolException, OperationCanceledException, AuthenticatorException, IOException {
 136             BasicHttpContext httpContext = new BasicHttpContext();
 137         BasicScheme basicAuth = new BasicScheme();
 138         httpContext.setAttribute("preemptive-auth", basicAuth);
 139
 140         HttpResponse response = getClient().execute(mHost, query, httpContext);
 141         return response;
 142         }
 143
 144         protected TreeNode fireRequest(HttpRequest query) throws ClientProtocolException, OperationCanceledException, AuthenticatorException, IOException {
 145                 HttpResponse response = fireRawRequest(query);
 146
 147                 TreeNode root = new TreeNode();
 148                 root.setProperty(TreeNode.NodeProperty.NAME, "");
 149                 this.parseResponse(response, getUri(), getClient(), mHost, root.getChildList(), false, 0);
 150                 return root;
 151         }
 152
 153         protected Uri getUri() {
 154                 return Uri.parse(this.getAccountManager().getUserData(getAccount(), AccountAuthenticator.KEY_OC_URL));
 155         }
 156
 157         private DefaultHttpClient getClient() throws OperationCanceledException, AuthenticatorException, IOException {
 158                 if(mClient == null) {
 159                         String username = getAccount().name.split("@")[0];
 160                         String password = this.getAccountManager().blockingGetAuthToken(getAccount(), AccountAuthenticator.AUTH_TOKEN_TYPE, true);
 161                         if (this.getAccountManager().getUserData(getAccount(), AccountAuthenticator.KEY_OC_URL) == null) {
 162                                 throw new UnknownHostException();
 163                         }
 164                         Uri uri = getUri();
 165
 166                         mClient = new WebdavClient(uri);
 167                         mClient.setCredentials(username, password);
 168                         mClient.allowUnsignedCertificates();
 169                         mHost = mClient.getTargetHost();
 170                 }
 171
 172                 return mClient.getHttpClient();
 173         }
 174
 175         private void parseResponse(HttpResponse resp, Uri uri, DefaultHttpClient client, HttpHost targetHost, LinkedList<TreeNode> insertList, boolean sf, long parent_id) throws IOException, OperationCanceledException, AuthenticatorException {
 176                 boolean skipFirst = sf, override_parent = !sf;
 177                 for (TreeNode n :WebdavUtils.parseResponseToNodes(resp.getEntity().getContent())) {
 178                   if (skipFirst) {
 179         skipFirst = false;
 180         continue;
 181       }
 182                         String path = n.stripPathFromFilename(uri.getPath());
 183                         OCFile new_file = OCFile.createNewFile(getContentProvider(),
 184           getAccount(),
 185           n.getProperty(NodeProperty.PATH),
 186           0,//Long.parseLong(n.getProperty(NodeProperty.CONTENT_LENGTH)),
 187           0,//Long.parseLong(n.getProperty(NodeProperty.CREATE_DATE)),
 188           0,//Long.parseLong(n.getProperty(NodeProperty.LAST_MODIFIED_DATE)),
 189           n.getProperty(NodeProperty.RESOURCE_TYPE),
 190           parent_id);
 191                         new_file.save();
 192                         if (override_parent) {
 193                           parent_id = new_file.getFileId();
 194                           override_parent = false;
 195                         }
 196
 197                         if (!TextUtils.isEmpty(n.getProperty(NodeProperty.NAME)) &&
 198                                         n.getProperty(NodeProperty.RESOURCE_TYPE).equals("DIR")) {
 199
 200                             HttpPropFind method = new HttpPropFind(uri.getPath() + path + n.getProperty(NodeProperty.NAME).replace(" ", "%20") + "/");
 201                                 HttpResponse response = fireRawRequest(method);
 202                                 parseResponse(response, uri, client, targetHost, n.getChildList(), true, new_file.getFileId());
 203                         }
 204                 }
 205         }
 206 }