From 4fd854da5a59da2478a40277b43c26686e25469b Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Sun, 14 Sep 2014 20:37:02 -0400
Subject: split the termcast and ssh handling out into separate files

---
 server.py | 120 ++++++++++++++++----------------------------------------------
 1 file changed, 31 insertions(+), 89 deletions(-)

(limited to 'server.py')

diff --git a/server.py b/server.py
index f09e2b0..3df5c92 100644
--- a/server.py
+++ b/server.py
@@ -1,59 +1,24 @@
-import paramiko
-import re
 import socket
-import time
 import threading
-import vt100
+import uuid
 
-class Connection(object):
-    def __init__(self):
-        self.buf = b''
-        self.vt = vt100.vt100()
-
-    def process(self, data):
-        self.buf += data
-        self.vt.process(data)
-
-    def get_term(self):
-        term = ''
-        for i in range(0, 24):
-            for j in range(0, 80):
-                term += self.vt.cell(i, j).contents.contents()
-            term += "\n"
-
-        return term[:-1]
-
-class SSHServer(paramiko.ServerInterface):
-    def check_channel_request(self, kind, chanid):
-        return paramiko.OPEN_SUCCEEDED
+import ssh
+import termcast
 
-    def check_channel_pty_request(self, channel, term, width, height, pixelwidth, pixelheight, modes):
-        return True
-
-    def check_channel_shell_request(self, channel):
-        return True
-
-    def check_auth_password(self, username, password):
-        if password == "blah":
-            return paramiko.AUTH_SUCCESSFUL
-        return paramiko.AUTH_FAILED
-
-    def get_allowed_auths(self, username):
-        return "password"
-
-class TermcastServer(object):
+class Server(object):
     def __init__(self):
-        self.sessions = {}
+        self.termcast_connections = {}
+        self.ssh_connections = {}
 
     def listen(self):
         ssh_sock = self._open_socket(2200)
-        tc_sock = self._open_socket(2201)
+        termcast_sock = self._open_socket(2201)
 
         threading.Thread(
             target=lambda: self.wait_for_ssh_connection(ssh_sock)
         ).start()
         threading.Thread(
-            target=lambda: self.wait_for_tc_connection(tc_sock)
+            target=lambda: self.wait_for_termcast_connection(termcast_sock)
         ).start()
 
     def wait_for_ssh_connection(self, sock):
@@ -62,57 +27,27 @@ class TermcastServer(object):
             lambda client: self.handle_ssh_connection(client)
         )
 
-    def wait_for_tc_connection(self, sock):
+    def wait_for_termcast_connection(self, sock):
         self._wait_for_connection(
             sock,
-            lambda client: self.handle_tc_connection(client)
+            lambda client: self.handle_termcast_connection(client)
         )
 
     def handle_ssh_connection(self, client):
-        t = paramiko.Transport(client)
-        t.add_server_key(paramiko.RSAKey(filename='test_rsa.key'))
-        t.start_server(server=SSHServer())
-        chan = t.accept(None)
-
-        if b'doy' in self.sessions:
-            chan.send(self.sessions[b'doy'].get_term())
-        else:
-            chan.send("no data for doy\r\n")
-
-        time.sleep(5)
-        chan.close()
-
-    def handle_tc_connection(self, client):
-        buf = b''
-        while len(buf) < 1024 and b"\n" not in buf:
-            buf += client.recv(1024)
-
-        pos = buf.find(b"\n")
-        if pos == -1:
-            print("no authentication found")
-            return
-
-        auth = buf[:pos]
-        buf = buf[pos+1:]
-
-        auth_re = re.compile(b'^hello ([^ ]+) ([^ ]+)$')
-        m = auth_re.match(auth)
-        if m is None:
-            print("no authentication found (%s)" % auth)
-            return
-
-        print(b"got auth: " + auth)
-        conn = Connection()
-        self.sessions[m.group(1)] = conn
-        client.send(b"hello, " + m.group(1) + b"\n")
+        self._handle_connection(
+            client,
+            self.ssh_connections,
+            self.termcast_connections,
+            lambda client, connection_id: ssh.Connection(client, connection_id)
+        )
 
-        conn.process(buf)
-        while True:
-            buf = client.recv(1024)
-            if len(buf) > 0:
-                conn.process(buf)
-            else:
-                return
+    def handle_termcast_connection(self, client):
+        self._handle_connection(
+            client,
+            self.termcast_connections,
+            self.ssh_connections,
+            lambda client, connection_id: termcast.Connection(client, connection_id)
+        )
 
     def _wait_for_connection(self, sock, cb):
         while True:
@@ -126,6 +61,13 @@ class TermcastServer(object):
 
             threading.Thread(target=cb, args=(client,)).start()
 
+    def _handle_connection(self, client, connection_store, other_store, cb):
+        connection_id = uuid.uuid4().hex
+        connection = cb(client, connection_id)
+        connection_store[connection_id] = connection
+        connection.run(other_store)
+        del connection_store[connection_id]
+
     def _open_socket(self, port):
         sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
         sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
@@ -133,5 +75,5 @@ class TermcastServer(object):
         return sock
 
 if __name__ == '__main__':
-    server = TermcastServer()
+    server = Server()
     server.listen()
-- 
cgit v1.2.3-54-g00ecf