2 * Copyright © 2019 Damyan Ivanov.
3 * This file is part of MoLe.
4 * MoLe is free software: you can distribute it and/or modify it
5 * under the term of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your opinion), any later version.
9 * MoLe 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 terms for details.
14 * You should have received a copy of the GNU General Public License
15 * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
18 package net.ktnx.mobileledger.async;
20 import android.os.AsyncTask;
21 import android.util.Log;
23 import com.fasterxml.jackson.databind.ObjectMapper;
24 import com.fasterxml.jackson.databind.ObjectWriter;
26 import net.ktnx.mobileledger.json.ParsedLedgerTransaction;
27 import net.ktnx.mobileledger.model.LedgerTransaction;
28 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
29 import net.ktnx.mobileledger.model.MobileLedgerProfile;
30 import net.ktnx.mobileledger.utils.Globals;
31 import net.ktnx.mobileledger.utils.Logger;
32 import net.ktnx.mobileledger.utils.NetworkUtil;
33 import net.ktnx.mobileledger.utils.UrlEncodedFormData;
35 import java.io.BufferedReader;
36 import java.io.IOException;
37 import java.io.InputStream;
38 import java.io.InputStreamReader;
39 import java.io.OutputStream;
40 import java.net.HttpURLConnection;
41 import java.nio.charset.StandardCharsets;
42 import java.util.List;
43 import java.util.Locale;
45 import java.util.regex.Matcher;
46 import java.util.regex.Pattern;
48 import static android.os.SystemClock.sleep;
49 import static net.ktnx.mobileledger.utils.Logger.debug;
51 public class SendTransactionTask extends AsyncTask<LedgerTransaction, Void, Void> {
52 private final TaskCallback taskCallback;
53 protected String error;
55 private String session;
56 private LedgerTransaction ltr;
57 private MobileLedgerProfile mProfile;
58 private boolean simulate = false;
60 public SendTransactionTask(TaskCallback callback, MobileLedgerProfile profile,
62 taskCallback = callback;
64 this.simulate = simulate;
66 public SendTransactionTask(TaskCallback callback, MobileLedgerProfile profile) {
67 taskCallback = callback;
71 private boolean sendOK() throws IOException {
75 if (Math.random() > 0.3)
76 throw new RuntimeException("Simulated test exception");
78 catch (InterruptedException ex) {
79 Logger.debug("network", ex.toString());
85 HttpURLConnection http = NetworkUtil.prepareConnection(mProfile, "add");
86 http.setRequestMethod("PUT");
87 http.setRequestProperty("Content-Type", "application/json");
88 http.setRequestProperty("Accept", "*/*");
90 ParsedLedgerTransaction jsonTransaction;
91 jsonTransaction = ltr.toParsedLedgerTransaction();
92 ObjectMapper mapper = new ObjectMapper();
93 ObjectWriter writer = mapper.writerFor(ParsedLedgerTransaction.class);
94 String body = writer.writeValueAsString(jsonTransaction);
96 byte[] bodyBytes = body.getBytes(StandardCharsets.UTF_8);
97 http.setDoOutput(true);
98 http.setDoInput(true);
99 http.addRequestProperty("Content-Length", String.valueOf(bodyBytes.length));
101 debug("network", "request header: " + http.getRequestProperties()
104 try (OutputStream req = http.getOutputStream()) {
105 debug("network", "Request body: " + body);
106 req.write(bodyBytes);
108 final int responseCode = http.getResponseCode();
110 String.format("Response: %d %s", responseCode, http.getResponseMessage()));
112 try (InputStream resp = http.getErrorStream()) {
114 switch (responseCode) {
119 return false; // will cause a retry with the legacy method
121 BufferedReader reader = new BufferedReader(new InputStreamReader(resp));
122 String line = reader.readLine();
123 debug("network", "Response content: " + line);
124 throw new IOException(
125 String.format("Error response code %d", responseCode));
132 private boolean legacySendOK() throws IOException {
133 HttpURLConnection http = NetworkUtil.prepareConnection(mProfile, "add");
134 http.setRequestMethod("POST");
135 http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
136 http.setRequestProperty("Accept", "*/*");
137 if ((session != null) && !session.isEmpty()) {
138 http.setRequestProperty("Cookie", String.format("_SESSION=%s", session));
140 http.setDoOutput(true);
141 http.setDoInput(true);
143 UrlEncodedFormData params = new UrlEncodedFormData();
144 params.addPair("_formid", "identify-add");
146 params.addPair("_token", token);
147 params.addPair("date", Globals.formatLedgerDate(ltr.getDate()));
148 params.addPair("description", ltr.getDescription());
149 for (LedgerTransactionAccount acc : ltr.getAccounts()) {
150 params.addPair("account", acc.getAccountName());
151 if (acc.isAmountSet())
152 params.addPair("amount", String.format(Locale.US, "%1.2f", acc.getAmount()));
154 params.addPair("amount", "");
157 String body = params.toString();
158 http.addRequestProperty("Content-Length", String.valueOf(body.length()));
160 debug("network", "request header: " + http.getRequestProperties()
163 try (OutputStream req = http.getOutputStream()) {
164 debug("network", "Request body: " + body);
165 req.write(body.getBytes(StandardCharsets.US_ASCII));
167 try (InputStream resp = http.getInputStream()) {
168 debug("update_accounts", String.valueOf(http.getResponseCode()));
169 if (http.getResponseCode() == 303) {
170 // everything is fine
173 else if (http.getResponseCode() == 200) {
174 // get the new cookie
176 Pattern reSessionCookie = Pattern.compile("_SESSION=([^;]+);.*");
178 Map<String, List<String>> header = http.getHeaderFields();
179 List<String> cookieHeader = header.get("Set-Cookie");
180 if (cookieHeader != null) {
181 String cookie = cookieHeader.get(0);
182 Matcher m = reSessionCookie.matcher(cookie);
184 session = m.group(1);
185 debug("network", "new session is " + session);
188 debug("network", "set-cookie: " + cookie);
190 "Response Set-Cookie headers is not a _SESSION one");
194 Log.w("network", "Response has no Set-Cookie header");
197 // the token needs to be updated
198 BufferedReader reader = new BufferedReader(new InputStreamReader(resp));
199 Pattern re = Pattern.compile(
200 "<input type=\"hidden\" name=\"_token\" value=\"([^\"]+)\">");
202 while ((line = reader.readLine()) != null) {
203 //debug("dump", line);
204 Matcher m = re.matcher(line);
207 debug("save-transaction", line);
208 debug("save-transaction", "Token=" + token);
209 return false; // retry
212 throw new IOException("Can't find _token string");
215 throw new IOException(
216 String.format("Error response code %d", http.getResponseCode()));
223 protected Void doInBackground(LedgerTransaction... ledgerTransactions) {
226 ltr = ledgerTransactions[0];
230 while (!legacySendOK()) {
233 throw new IOException(String.format("aborting after %d tries", tried));
238 catch (Exception e) {
240 error = e.getMessage();
247 protected void onPostExecute(Void aVoid) {
248 super.onPostExecute(aVoid);
249 taskCallback.done(error);