src/com/owncloud/android/authenticator/oauth2/connection/ConnectorOAuth2.java

   1 package com.owncloud.android.authenticator.oauth2.connection;
   2
   3 import org.apache.http.HttpResponse;
   4 import org.apache.http.client.entity.UrlEncodedFormEntity;
   5 import org.apache.http.client.methods.HttpPost;
   6 import org.apache.http.client.params.ClientPNames;
   7 import org.apache.http.client.params.CookiePolicy;
   8 import org.apache.http.impl.client.DefaultHttpClient;
   9 import org.apache.http.params.BasicHttpParams;
  10 import org.apache.http.params.HttpConnectionParams;
  11 import org.apache.http.params.HttpParams;
  12 import org.apache.http.protocol.BasicHttpContext;
  13 import org.apache.http.protocol.HttpContext;
  14 import org.apache.http.util.EntityUtils;
  15
  16 import android.util.Log;
  17
  18 /**
  19  * Implements HTTP POST communications with an oAuth2 server.
  20  *
  21  * @author SolidGear S.L.
  22  *
  23  */
  24 public class ConnectorOAuth2 {
  25
  26     private static final String TAG = "ConnectorOAuth2";
  27     /** Maximum time to wait for a response from the server when the connection is being tested, in MILLISECONDs.  */
  28     private static final int TRY_CONNECTION_TIMEOUT = 5000;
  29
  30     private DefaultHttpClient httpClient;
  31     private HttpContext localContext;
  32     private String ConnectorOAuth2Url;
  33
  34     public ConnectorOAuth2 (String destUrl) {
  35         prepareConn();
  36         setConnectorOAuth2Url(destUrl);
  37     }
  38
  39     public ConnectorOAuth2 () {
  40         prepareConn();
  41     }
  42
  43     public String getConnectorOAuth2Url() {
  44         return ConnectorOAuth2Url;
  45     }
  46
  47     public void setConnectorOAuth2Url(String connectorOAuth2Url) {
  48         ConnectorOAuth2Url = connectorOAuth2Url;
  49     }
  50
  51     /**
  52      * Starts the communication with the server.
  53      *
  54      * @param UrlEncodedFormEntity : parameters included in the POST call.
  55      * @return String : data returned from the server in String format.
  56      */
  57
  58     public String connPost(UrlEncodedFormEntity  data) {
  59         String dataOut = null;
  60         HttpPost httpPost = null;
  61         int responseCode = -1;
  62         HttpResponse response = null;
  63
  64         httpClient.getParams().setParameter(ClientPNames.COOKIE_POLICY, CookiePolicy.RFC_2109);
  65
  66         if (ConnectorOAuth2Url == null) {
  67             Log.e(TAG, "connPost error: destination URI could not be null");
  68             return null;
  69         }
  70
  71         if (data == null){
  72             Log.e(TAG, "connPost error: data to send to URI " + ConnectorOAuth2Url + "could not be null");
  73             return null;
  74         }
  75
  76         httpPost = new HttpPost(ConnectorOAuth2Url);
  77
  78         httpPost.setHeader("Accept","text/html,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5");
  79         httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded");
  80         httpPost.setEntity((UrlEncodedFormEntity) data);
  81
  82         try {
  83             response = httpClient.execute(httpPost,localContext);
  84
  85             if (response == null) {
  86                 Log.e(TAG, "connPost error: response from uri " + ConnectorOAuth2Url + " is null");
  87                 return null;
  88             }
  89
  90             responseCode = response.getStatusLine().getStatusCode();
  91
  92             if ((responseCode != 200)) {
  93                 Log.e(TAG, "connPost error: response from uri "+ ConnectorOAuth2Url + " returns status " + responseCode);
  94                 return null;
  95             }
  96
  97             dataOut = EntityUtils.toString(response.getEntity());
  98
  99         } catch (Exception e) {
 100             Log.e(TAG, "connPost Exception: " + e);
 101         }
 102
 103         return dataOut;
 104     }
 105
 106     private void prepareConn () {
 107         HttpParams localParams = new BasicHttpParams();
 108         HttpConnectionParams.setConnectionTimeout(localParams, TRY_CONNECTION_TIMEOUT);
 109         HttpConnectionParams.setSoTimeout(localParams, TRY_CONNECTION_TIMEOUT);
 110         httpClient = new DefaultHttpClient(localParams);
 111         localContext = new BasicHttpContext();
 112     }
 113 }