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

   1 package eu.alefzero.owncloud.syncadapter;
   2
   3 import java.io.IOException;
   4 import java.net.UnknownHostException;
   5 import java.util.Date;
   6 import java.util.LinkedList;
   7
   8 import org.apache.http.HttpHost;
   9 import org.apache.http.HttpResponse;
  10 import org.apache.http.auth.AuthScope;
  11 import org.apache.http.auth.UsernamePasswordCredentials;
  12 import org.apache.http.client.ClientProtocolException;
  13 import org.apache.http.conn.ConnectionKeepAliveStrategy;
  14 import org.apache.http.impl.auth.BasicScheme;
  15 import org.apache.http.impl.client.DefaultHttpClient;
  16 import org.apache.http.protocol.BasicHttpContext;
  17 import org.apache.http.protocol.HttpContext;
  18
  19 import android.accounts.Account;
  20 import android.accounts.AccountManager;
  21 import android.accounts.AuthenticatorException;
  22 import android.accounts.OperationCanceledException;
  23 import android.content.AbstractThreadedSyncAdapter;
  24 import android.content.ContentProviderClient;
  25 import android.content.Context;
  26 import android.net.Uri;
  27 import android.text.TextUtils;
  28 import eu.alefzero.owncloud.authenticator.AccountAuthenticator;
  29 import eu.alefzero.webdav.HttpPropFind;
  30 import eu.alefzero.webdav.TreeNode;
  31 import eu.alefzero.webdav.TreeNode.NodeProperty;
  32 import eu.alefzero.webdav.WebdavUtils;
  33
  34 /**
  35  * Base SyncAdapter for OwnCloud
  36  * Designed to be subclassed for the concreete SyncAdapter, like ConcatsSync, CalendarSync, FileSync etc..
  37  *
  38  * @author sassman
  39  *
  40  */
  41 public abstract class AbstractOwnCloudSyncAdapter extends AbstractThreadedSyncAdapter {
  42
  43         private AccountManager accountManager;
  44         private Account account;
  45         private ContentProviderClient contentProvider;
  46         private Date lastUpdated;
  47
  48         private DefaultHttpClient client = null;
  49         private HttpHost host;
  50
  51         public AbstractOwnCloudSyncAdapter(Context context, boolean autoInitialize) {
  52                 super(context, autoInitialize);
  53                 this.setAccountManager(AccountManager.get(context));
  54         }
  55
  56         public AccountManager getAccountManager() {
  57                 return accountManager;
  58         }
  59
  60         public void setAccountManager(AccountManager accountManager) {
  61                 this.accountManager = accountManager;
  62         }
  63
  64         public Account getAccount() {
  65                 return account;
  66         }
  67
  68         public void setAccount(Account account) {
  69                 this.account = account;
  70         }
  71
  72         public ContentProviderClient getContentProvider() {
  73                 return contentProvider;
  74         }
  75
  76         public void setContentProvider(ContentProviderClient contentProvider) {
  77                 this.contentProvider = contentProvider;
  78         }
  79
  80         public Date getLastUpdated() {
  81                 return lastUpdated;
  82         }
  83
  84         public void setLastUpdated(Date lastUpdated) {
  85                 this.lastUpdated = lastUpdated;
  86         }
  87
  88         protected ConnectionKeepAliveStrategy getKeepAliveStrategy() {
  89                 return new ConnectionKeepAliveStrategy() {
  90                         public long getKeepAliveDuration(HttpResponse response, HttpContext context) {
  91                                 // TODO: change keep alive straategy basing on response: ie forbidden/not found/etc
  92                                 // should have keep alive 0
  93                                 // default return: 5s
  94                                 return 5 * 1000;
  95                         }
  96                 };
  97         }
  98
  99         protected HttpPropFind getBasicQuery() throws OperationCanceledException, AuthenticatorException, IOException {
 100                 HttpPropFind query = new HttpPropFind(getUri().toString());
 101                 query.setHeader("Content-type", "text/xml");
 102                 query.setHeader("User-Agent", "Android-ownCloud");
 103                 return query;
 104         }
 105
 106         protected TreeNode fireQuery(HttpPropFind query) throws ClientProtocolException, OperationCanceledException, AuthenticatorException, IOException {
 107                 BasicHttpContext httpContext = new BasicHttpContext();
 108                 BasicScheme basicAuth = new BasicScheme();
 109                 httpContext.setAttribute("preemptive-auth", basicAuth);
 110
 111                 HttpResponse response = getClient().execute(this.host, query, httpContext);
 112
 113                 TreeNode root = new TreeNode();
 114                 root.setProperty(TreeNode.NodeProperty.NAME, "/");
 115                 this.parseResponse(response, getUri(), getClient(), this.host, httpContext, root.getChildList());
 116                 return root;
 117         }
 118
 119         private Uri getUri() {
 120                 return Uri.parse(this.getAccountManager().getUserData(getAccount(), AccountAuthenticator.KEY_OC_URL));
 121         }
 122
 123         private DefaultHttpClient getClient() throws OperationCanceledException, AuthenticatorException, IOException {
 124                 if(this.client == null) {
 125                         String username = getAccount().name.split("@")[0];
 126                         String password = this.getAccountManager().blockingGetAuthToken(getAccount(), AccountAuthenticator.AUTH_TOKEN_TYPE, true);
 127                         if (this.getAccountManager().getUserData(getAccount(), AccountAuthenticator.KEY_OC_URL) == null) {
 128                                 throw new UnknownHostException();
 129                         }
 130                         Uri uri = getUri();
 131
 132                         int port = (uri.getPort() == -1) ? 80 : uri.getPort();
 133                         this.client = new DefaultHttpClient();
 134                         this.client.getCredentialsProvider().setCredentials(
 135                                 new AuthScope(uri.getHost(), port),
 136                                 new UsernamePasswordCredentials(username, password)
 137                         );
 138                         this.client.setKeepAliveStrategy(this.getKeepAliveStrategy());
 139                         this.host = new HttpHost(uri.getHost(), port, (uri.getScheme() == "https") ? "https" : "http");
 140                 }
 141
 142                 return this.client;
 143         }
 144
 145         private void parseResponse(HttpResponse resp, Uri uri, DefaultHttpClient client, HttpHost targetHost, BasicHttpContext httpContext, LinkedList<TreeNode> insertList) throws IOException {
 146                 boolean skipFirst = true;
 147                 for (TreeNode n :WebdavUtils.parseResponseToNodes(resp.getEntity().getContent())) {
 148                         String path = n.stripPathFromFilename(uri.getPath());
 149                         if (skipFirst) {
 150                                 skipFirst = false;
 151                                 continue;
 152                         }
 153                         insertList.add(n);
 154
 155                         if (!TextUtils.isEmpty(n.getProperty(NodeProperty.NAME)) &&
 156                                         n.getProperty(NodeProperty.RESOURCE_TYPE).equals("DIR")) {
 157                                 HttpPropFind method = new HttpPropFind(uri.getPath() + path + n.getProperty(NodeProperty.NAME).replace(" ", "%20") + "/");
 158                                 HttpResponse response = client.execute(targetHost, method, httpContext);
 159                                 parseResponse(response, uri, client, targetHost, httpContext, n.getChildList());
 160                         }
 161                 }
 162         }
 163
 164 }