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vertx-gemini-server
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add start page with chat explanation

This commit is contained in:
Alexander Lehmann 2023-05-07 01:42:50 +02:00
parent a9df49329d
commit 2b3376a89b
1 changed files with 74 additions and 57 deletions
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131
src/main/java/cx/lehmann/gemini/gemini/MainVerticle.java
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@ -41,18 +41,18 @@ public class MainVerticle extends AbstractVerticle {
List<NetSocket> clients=new ArrayList<>();
// X509TrustManager tm=new MyTrustManager();
// X509TrustManager tm=new MyTrustManager();
@Override
public void start(Promise<Void> startPromise) throws Exception {
NetServerOptions options=new NetServerOptions();
vertx.exceptionHandler(ex -> {ex.printStackTrace();});
// String certPath="c:/temp/cert.pem";
String certPath="/home/lehmann/gemini-chat/cert.pem";
// TrustOptions trustOptions=new MyTrustOptions(vertx);
// TrustOptions trustOptions=new MyTrustOptions(vertx);
TrustManagerFactory trustMgrFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
KeyStore keystore=KeyStore.getInstance("JKS");
@ -61,26 +61,26 @@ public class MainVerticle extends AbstractVerticle {
TrustManager tms[] = trustMgrFactory.getTrustManagers();
TrustManager tm=tms[0];
TrustManager trustManager = new MyTrustManager(tm);
options.setPemKeyCertOptions(new PemKeyCertOptions()
.setCertPath(certPath)
.setKeyPath(certPath))
.setSsl(true)
// .setTrustOptions(trustOptions)
.setTrustOptions(TrustOptions.wrap(trustManager))
// .setTrustOptions(trustOptions)
.setTrustOptions(TrustOptions.wrap(trustManager))
// .setOpenSslEngineOptions(new OpenSSLEngineOptions())
// .setOpenSslEngineOptions(new OpenSSLEngineOptions())
.setClientAuth(ClientAuth.REQUEST)
;
;
// SSLContext sc = SSLContext.getInstance("SSL");
// sc.init(null, new X509TrustManager[] { tm }, null);
// HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
// SSLContext sc = SSLContext.getInstance("SSL");
// sc.init(null, new X509TrustManager[] { tm }, null);
// HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
vertx.createNetServer(options).connectHandler(conn -> {
conn.handler(event -> {
System.out.println(new Date().toString()+"accepted connection:"+conn.remoteAddress());
System.out.println(new Date().toString()+" accepted connection:"+conn.remoteAddress());
String url=event.toString("UTF-8");
if(!url.endsWith("\r\n")) {
conn.write("40 format error\r\n");
@ -89,17 +89,34 @@ public class MainVerticle extends AbstractVerticle {
url=url.substring(0, url.length()-2);
System.out.println("url:"+url);
String path=url.substring(9);
if(path.indexOf('/')>=0) {
path=path.substring(path.indexOf('/'));
} else {
path="";
}
if(path.indexOf('/')>=0) {
path=path.substring(path.indexOf('/'));
} else {
path="";
}
System.out.println("path:"+path);
if(path.equals("")) {
conn.write("30 gemini://gemini.lehmann.cx:11965/\r\n");
conn.close();
}
else if(path.startsWith("/post")) {
if(path.equals("")) {
conn.write("30 gemini://gemini.lehmann.cx:11965/\r\n");
conn.close();
}
else if(path.equals("/")) {
conn.write("20 text/gemini\r\n");
conn.write("# a very simple chat server\n");
conn.write("the chat page loads indefintely (until the connection breaks at least)\n");
conn.write("and shows chat messages sent by other users\n");
conn.write("messages can be sent via the /post url and use the client certificate to authenticate\n");
conn.write("currently the sha256 hash of the client cert is used as user-id\n");
conn.write("\n");
conn.write("the source code for the server is at\n");
conn.write("=> https://tildegit.org/alexlehm/vertx-gemini-server\n");
conn.write("the author of this chat is reachable via\n");
conn.write("=> gemini://gemini.lehmann.cx/\n");
conn.write("\n");
conn.write("click on the link to get started\n");
conn.write("=> /chat\n");
conn.close();
}
else if(path.startsWith("/post")) {
System.out.println("post");
try {
List<Certificate> certs = conn.peerCertificates();
@ -115,22 +132,22 @@ public class MainVerticle extends AbstractVerticle {
conn.write("message was sent\n");
conn.write("=> /post post another message\n");
String decodedMessage;
try {
decodedMessage=URLDecoder.decode(message, "utf-8");
}
catch(UnsupportedEncodingException ex) {
decodedMessage="error";
}
String decodedMessage;
try {
decodedMessage=URLDecoder.decode(message, "utf-8");
}
catch(UnsupportedEncodingException ex) {
decodedMessage="error";
}
String quotedMessage=decodedMessage.replace("\n", "\n ");
String quotedMessage=decodedMessage.replace("\n", "\n ");
for (NetSocket socket:clients) {
socket.write(clientHash+":"+quotedMessage+"\n");
}
for (NetSocket socket:clients) {
socket.write(clientHash+":"+quotedMessage+"\n");
}
}
} catch (SSLPeerUnverifiedException | CertificateEncodingException | NoSuchAlgorithmException ex) {
// ex.printStackTrace();
// ex.printStackTrace();
conn.write("60 cert required\r\n");
}
conn.close();
@ -156,25 +173,25 @@ public class MainVerticle extends AbstractVerticle {
}
}
}
);
}).listen(11965, server -> {
if (server.succeeded()) {
startPromise.complete();
System.out.println("Gemini server started on port 11965 at "+new Date().toString());
} else {
server.cause().printStackTrace();
startPromise.fail(server.cause());
}
});
}
);
}).listen(11965, server -> {
if (server.succeeded()) {
startPromise.complete();
System.out.println("Gemini server started on port 11965 at "+new Date().toString());
} else {
server.cause().printStackTrace();
startPromise.fail(server.cause());
}
});
}
private static String getThumbprint(X509Certificate cert)
throws NoSuchAlgorithmException, CertificateEncodingException {
MessageDigest md = MessageDigest.getInstance("SHA-256");
byte[] der = cert.getEncoded();
md.update(der);
byte[] digest = md.digest();
String digestHex = DatatypeConverter.printHexBinary(digest);
return digestHex.toLowerCase();
}
private static String getThumbprint(X509Certificate cert)
throws NoSuchAlgorithmException, CertificateEncodingException {
MessageDigest md = MessageDigest.getInstance("SHA-256");
byte[] der = cert.getEncoded();
md.update(der);
byte[] digest = md.digest();
String digestHex = DatatypeConverter.printHexBinary(digest);
return digestHex.toLowerCase();
}
}