--- /dev/null
+/*
+ * Copyright © 2018 Damyan Ivanov.
+ * This file is part of Mobile-Ledger.
+ * Mobile-Ledger is free software: you can distribute it and/or modify it
+ * under the term of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your opinion), any later version.
+ *
+ * Mobile-Ledger is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License terms for details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Mobile-Ledger. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.ktnx.mobileledger.async;
+
+import android.content.SharedPreferences;
+import android.os.AsyncTask;
+import android.util.Log;
+
+import net.ktnx.mobileledger.model.LedgerTransaction;
+import net.ktnx.mobileledger.model.LedgerTransactionItem;
+import net.ktnx.mobileledger.utils.NetworkUtil;
+import net.ktnx.mobileledger.utils.UrlEncodedFormData;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import static java.lang.Thread.sleep;
+
+public class SaveTransactionTask extends AsyncTask<LedgerTransaction, Void, Void> {
+ private final TaskCallback task_callback;
+ private String token;
+ private String session;
+ private String backend_url;
+ private LedgerTransaction ltr;
+ protected String error;
+
+ private SharedPreferences pref;
+ public void setPref(SharedPreferences pref) {
+ this.pref = pref;
+ }
+
+ public SaveTransactionTask(TaskCallback callback) {
+ task_callback = callback;
+ }
+ private boolean send_ok() throws IOException {
+ HttpURLConnection http = NetworkUtil.prepare_connection(pref, "add");
+ http.setRequestMethod("POST");
+ http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
+ http.setRequestProperty("Accept", "*/*");
+ if ((session != null) && !session.isEmpty()) {
+ http.setRequestProperty("Cookie", String.format("_SESSION=%s", session));
+ }
+ http.setDoOutput(true);
+ http.setDoInput(true);
+
+ UrlEncodedFormData params = new UrlEncodedFormData();
+ params.add_pair("_formid", "identify-add");
+ if (token != null) params.add_pair("_token", token);
+ params.add_pair("date", ltr.getDate());
+ params.add_pair("description", ltr.getDescription());
+ {
+ Iterator<LedgerTransactionItem> items = ltr.getItemsIterator();
+ while (items.hasNext()) {
+ LedgerTransactionItem item = items.next();
+ params.add_pair("account", item.getAccountName());
+ if (item.isAmountSet())
+ params.add_pair("amount", String.format(Locale.US, "%1.2f", item.getAmount()));
+ else params.add_pair("amount", "");
+ }
+ }
+
+ String body = params.toString();
+ http.addRequestProperty("Content-Length", String.valueOf(body.length()));
+
+ Log.d("network", "request header: " + http.getRequestProperties().toString());
+
+ try (OutputStream req = http.getOutputStream()) {
+ Log.d("network", "Request body: " + body);
+ req.write(body.getBytes("ASCII"));
+
+ try (InputStream resp = http.getInputStream()) {
+ Log.d("update_accounts", String.valueOf(http.getResponseCode()));
+ if (http.getResponseCode() == 303) {
+ // everything is fine
+ return true;
+ } else if (http.getResponseCode() == 200) {
+ // get the new cookie
+ {
+ Pattern sess_cookie_re = Pattern.compile("_SESSION=([^;]+);.*");
+
+ Map<String, List<String>> header = http.getHeaderFields();
+ List<String> cookie_header = header.get("Set-Cookie");
+ if (cookie_header != null) {
+ String cookie = cookie_header.get(0);
+ Matcher m = sess_cookie_re.matcher(cookie);
+ if (m.matches()) {
+ session = m.group(1);
+ Log.d("network", "new session is " + session);
+ } else {
+ Log.d("network", "set-cookie: " + cookie);
+ Log.w("network", "Response Set-Cookie headers is not a _SESSION one");
+ }
+ } else {
+ Log.w("network", "Response has no Set-Cookie header");
+ }
+ }
+ // the token needs to be updated
+ BufferedReader reader = new BufferedReader(new InputStreamReader(resp));
+ Pattern re = Pattern.compile("<input type=\"hidden\" name=\"_token\" value=\"([^\"]+)\">");
+ String line;
+ while ((line = reader.readLine()) != null) {
+ //Log.d("dump", line);
+ Matcher m = re.matcher(line);
+ if (m.matches()) {
+ token = m.group(1);
+ Log.d("save-transaction", line);
+ Log.d("save-transaction", "Token=" + token);
+ return false; // retry
+ }
+ }
+ throw new IOException("Can't find _token string");
+ } else {
+ throw new IOException(String.format("Error response code %d", http.getResponseCode()));
+ }
+ }
+ }
+ }
+
+ @Override
+ protected Void doInBackground(LedgerTransaction... ledgerTransactions) {
+ error = null;
+ try {
+ backend_url = pref.getString("backend_url", "");
+ ltr = ledgerTransactions[0];
+
+ int tried = 0;
+ while (!send_ok()) {
+ try {
+ tried++;
+ if (tried >= 2)
+ throw new IOException(String.format("aborting after %d tries", tried));
+ sleep(100);
+ }
+ catch (InterruptedException e) {
+ e.printStackTrace();
+ }
+ }
+ }
+ catch (Exception e) {
+ e.printStackTrace();
+ error = e.getMessage();
+ }
+
+ return null;
+ }
+
+ @Override
+ protected void onPostExecute(Void aVoid) {
+ super.onPostExecute(aVoid);
+ task_callback.done(error);
+ }
+}
projects / mobile-ledger.git / blobdiff