Mirrors/FairEmail
1
0
Fork 0
mirror of https://github.com/M66B/FairEmail.git synced 2026-03-27 03:15:39 +01:00
Code Issues Packages Projects Releases Wiki Activity

Added mini connection checker

Browse Source
This commit is contained in:
M66B
2023-11-09 19:06:23 +01:00
parent 962a62f1e0
commit 5bdbec77cb
4 changed files with 338 additions and 105 deletions
Download Patch File Download Diff File Expand all files Collapse all files

102
app/src/main/java/eu/faircode/email/ConnectionHelper.java
View File

@@ -36,7 +36,9 @@ import androidx.preference.PreferenceManager;
import com.sun.mail.iap.ConnectionException;
import com.sun.mail.util.FolderClosedIOException;
import com.sun.mail.util.LineInputStream;
import java.io.BufferedInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.HttpURLConnection;
@@ -46,6 +48,8 @@ import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.net.Socket;
import java.net.SocketException;
import java.net.URL;
import java.net.URLDecoder;
import java.net.UnknownHostException;
@@ -804,4 +808,102 @@ public class ConnectionHelper {
return null;
}
}
static SSLSocket starttls(Socket socket, String host, int port, Context context) throws IOException {
String response;
String command;
boolean has = false;
LineInputStream lis =
new LineInputStream(
new BufferedInputStream(
socket.getInputStream()));
if (port == 587) {
do {
response = lis.readLine();
if (response != null)
EntityLog.log(context, EntityLog.Type.Protocol,
socket.getRemoteSocketAddress() + " <" + response);
} while (response != null && !response.startsWith("220 "));
command = "EHLO " + EmailService.getDefaultEhlo() + "\n";
EntityLog.log(context, socket.getRemoteSocketAddress() + " >" + command);
socket.getOutputStream().write(command.getBytes());
do {
response = lis.readLine();
if (response != null) {
EntityLog.log(context, EntityLog.Type.Protocol,
socket.getRemoteSocketAddress() + " <" + response);
if (response.contains("STARTTLS"))
has = true;
}
} while (response != null &&
response.length() >= 4 && response.charAt(3) == '-');
if (has) {
command = "STARTTLS\n";
EntityLog.log(context, EntityLog.Type.Protocol,
socket.getRemoteSocketAddress() + " >" + command);
socket.getOutputStream().write(command.getBytes());
}
} else if (port == 143) {
do {
response = lis.readLine();
if (response != null) {
EntityLog.log(context, EntityLog.Type.Protocol,
socket.getRemoteSocketAddress() + " <" + response);
if (response.contains("STARTTLS"))
has = true;
}
} while (response != null &&
!response.startsWith("* OK"));
if (has) {
command = "A001 STARTTLS\n";
EntityLog.log(context, EntityLog.Type.Protocol,
socket.getRemoteSocketAddress() + " >" + command);
socket.getOutputStream().write(command.getBytes());
}
}
if (has) {
do {
response = lis.readLine();
if (response != null)
EntityLog.log(context, EntityLog.Type.Protocol,
socket.getRemoteSocketAddress() + " <" + response);
} while (response != null &&
!(response.startsWith("A001 OK") || response.startsWith("220 ")));
SSLSocketFactory sslFactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
return (SSLSocket) sslFactory.createSocket(socket, host, port, false);
} else
throw new SocketException("No STARTTLS");
}
static void signOff(Socket socket, int port, Context context) {
try {
String command = (port == 465 || port == 587 ? "QUIT" : "A002 LOGOUT");
EntityLog.log(context, EntityLog.Type.Protocol,
socket.getRemoteSocketAddress() + " >" + command);
socket.getOutputStream().write((command + "\n").getBytes());
LineInputStream lis =
new LineInputStream(
new BufferedInputStream(
socket.getInputStream()));
String response;
do {
response = lis.readLine();
if (response != null)
EntityLog.log(context, EntityLog.Type.Protocol,
socket.getRemoteSocketAddress() + " <" + response);
} while (response != null);
} catch (IOException ex) {
Log.w(ex);
}
}
}