app/src/main/java/net/ktnx/mobileledger/RetrieveAccountsTask.java

   1 package net.ktnx.mobileledger;
   2
   3 import android.content.SharedPreferences;
   4 import android.database.sqlite.SQLiteDatabase;
   5 import android.util.Log;
   6
   7 import java.io.BufferedReader;
   8 import java.io.IOException;
   9 import java.io.InputStream;
  10 import java.io.InputStreamReader;
  11 import java.net.Authenticator;
  12 import java.net.HttpURLConnection;
  13 import java.net.MalformedURLException;
  14 import java.net.PasswordAuthentication;
  15 import java.net.URL;
  16 import java.net.URLDecoder;
  17 import java.util.regex.Matcher;
  18 import java.util.regex.Pattern;
  19
  20 abstract public class RetrieveAccountsTask extends android.os.AsyncTask<SQLiteDatabase, Integer, Void> {
  21     protected int error;
  22
  23     SharedPreferences pref;
  24     public void setPref(SharedPreferences pref) {
  25         this.pref = pref;
  26     }
  27     public RetrieveAccountsTask() {
  28         error = 0;
  29     }
  30
  31     protected Void doInBackground(SQLiteDatabase... sqLiteDatabases) {
  32         final String backend_url = pref.getString("backend_url", "");
  33         final boolean use_auth = pref.getBoolean("backend_use_http_auth", false);
  34         final SQLiteDatabase db = sqLiteDatabases[0];
  35         try {
  36             Log.d("update_accounts", "Connecting to "+backend_url);
  37             HttpURLConnection http = (HttpURLConnection) new URL(backend_url + "/journal").openConnection();
  38             if (use_auth) {
  39                 final String auth_user = pref.getString("backend_auth_user", "");
  40                 final String auth_password = pref.getString("backend_auth_password", "");
  41                 Authenticator.setDefault(new Authenticator() {
  42                     @Override
  43                     protected PasswordAuthentication getPasswordAuthentication() {
  44                         Log.d("http-auth", "called");
  45                         return new PasswordAuthentication(auth_user, auth_password.toCharArray());
  46                     }
  47                 });
  48 //                final String basic_auth = String.format("Basic %s:%s", auth_user, auth_password);
  49 //                http.setRequestProperty("Authorization", basic_auth);
  50                 Log.d("update_accounts", "Will auth as "+auth_user+" with password of "+auth_password.length()+" characters");
  51             }
  52             http.setAllowUserInteraction(false);
  53             http.setRequestProperty("Accept-Charset", "UTF-8");
  54             publishProgress(0);
  55             InputStream resp = http.getInputStream();
  56             try {
  57                 Log.d("update_accounts", String.valueOf(http.getResponseCode()));
  58                 if (http.getResponseCode() != 200) {
  59                     error = R.string.err_http_error;
  60                 }
  61                 else {
  62                     db.beginTransaction();
  63                     db.execSQL("delete from accounts;");
  64
  65                     try {
  66                         String line;
  67                         BufferedReader buf = new BufferedReader(new InputStreamReader(resp, "UTF-8"));
  68                         // %3A is '='
  69                         Pattern re = Pattern.compile('"' + backend_url + "/register\\?q=inacct%3A([a-zA-Z0-9%]+)\\\"");
  70                         int count = 0;
  71                         while ((line = buf.readLine()) != null) {
  72                             Matcher m = re.matcher(line);
  73                             while (m.find()) {
  74                                 String acct_encoded = m.group(1);
  75                                 String acct_name = URLDecoder.decode(acct_encoded, "UTF-8");
  76                                 acct_name = acct_name.replace("\"", "");
  77                                 Log.d("account-parser", acct_name);
  78
  79                                 db.execSQL("insert into accounts(name) values(?)", new Object[]{acct_name} );
  80                                 publishProgress(++count);
  81                             }
  82                         }
  83
  84                         db.setTransactionSuccessful();
  85                     }
  86                     finally {
  87                         db.endTransaction();
  88                     }
  89
  90                 }
  91             }
  92             finally {
  93                 resp.close();
  94             }
  95         } catch (MalformedURLException e) {
  96             error = R.string.err_bad_backend_url;
  97             e.printStackTrace();
  98         } catch (IOException e) {
  99             error = R.string.err_net_io_error;
 100             e.printStackTrace();
 101         }
 102         catch (Exception e) {
 103             error = R.string.err_net_error;
 104             e.printStackTrace();
 105         }
 106
 107         return null;
 108     }
 109
 110     abstract protected void onProgressUpdate(Integer... values);
 111
 112     abstract protected void onPostExecute(Void result);
 113 }