Create messageboard.py

messageboard.py

@@ -0,0 +1,138 @@
+import RNS
+import LXMF
+import os
+import redis
+import shortuuid
+import time
+
+display_name = "SolarExpress Message Board"
+configdir = "~/retic/"
+identitypath = configdir+"storage/identity"
+
+r = redis.Redis(db=2, decode_responses=True)
+
+def setup_lxmf():
+
+    if os.path.isfile(identitypath):
+        identity = RNS.Identity.from_file(identitypath)
+        RNS.log('Loaded identity from file', RNS.LOG_INFO)
+    else:
+        RNS.log('No Primary Identity file found, creating new...', RNS.LOG_INFO)
+        identity = RNS.Identity()
+        identity.to_file(identitypath)
+
+    return identity
+
+def lxmf_delivery(message):
+    # Do something here with a received message
+    RNS.log("A message was received: "+str(message.content.decode('utf-8')))
+
+    message_content = message.content.decode('utf-8')
+
+    source_hash_text = RNS.hexrep(message.source_hash, delimit=False)
+
+    if r.exists(source_hash_text):
+        uuid_user = r.get(source_hash_text)
+    else:
+        RNS.log('Generate new username', RNS.LOG_INFO)
+        uuid_user = shortuuid.ShortUUID().random(length=12)
+        r.set(source_hash_text, uuid_user)
+
+        message_id = '{}_{}'.format(source_hash_text, time.time())
+        r.set(message_id, 'Hi, your unique username is {}, this is linked to your nomad address'.format(uuid_user))
+        r.lpush('message_queue', message_id)
+
+    RNS.log('UUID: {}'.format(uuid_user), RNS.LOG_INFO)
+
+    time_string = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(message.timestamp))
+    new_message = '{} {}: {}'.format(time_string, uuid_user, message_content)
+    r.lpush('message_board_general', new_message)
+
+    message_id = '{}_{}'.format(source_hash_text, time.time())
+    r.set(message_id, 'Your message has been added to the messageboard')
+    r.lpush('message_queue', message_id)
+
+def announce_now(lxmf_destination):
+    lxmf_destination.announce()
+
+def send_message(destination_hash, message_content):
+  try:
+    # Make a binary destination hash from a hexadecimal string
+    destination_hash = bytes.fromhex(destination_hash)
+
+  except Exception as e:
+    RNS.log("Invalid destination hash", RNS.LOG_ERROR)
+    return
+
+  # Check that size is correct
+  if not len(destination_hash) == RNS.Reticulum.TRUNCATED_HASHLENGTH//8:
+    RNS.log("Invalid destination hash length", RNS.LOG_ERROR)
+
+  else:
+    # Length of address was correct, let's try to recall the
+    # corresponding Identity
+    destination_identity = RNS.Identity.recall(destination_hash)
+
+    if destination_identity == None:
+      # No path/identity known, we'll have to abort or request one
+      RNS.log("Could not recall an Identity for the requested address. You have probably never received an announce from it. Try requesting a path from the network first. In fact, let's do this now :)", RNS.LOG_ERROR)
+      RNS.Transport.request_path(destination_hash)
+      RNS.log("OK, a path was requested. If the network knows a path, you will receive an announce with the Identity data shortly.", RNS.LOG_INFO)
+
+    else:
+      # We know the identity for the destination hash, let's
+      # reconstruct a destination object.
+      lxmf_destination = RNS.Destination(destination_identity, RNS.Destination.OUT, RNS.Destination.SINGLE, "lxmf", "delivery")
+
+      # Create a new message object
+      lxm = LXMF.LXMessage(lxmf_destination, local_lxmf_destination, message_content, title="Reply", desired_method=LXMF.LXMessage.DIRECT)
+
+      # You can optionally tell LXMF to try to send the message
+      # as a propagated message if a direct link fails
+      lxm.try_propagation_on_fail = True
+
+      # Send it
+      message_router.handle_outbound(lxm)
+
+
+
+# Start Reticulum and print out all the debug messages
+reticulum = RNS.Reticulum(loglevel=RNS.LOG_EXTREME)
+
+# Create a Identity.
+current_identity = setup_lxmf()
+
+# Init the LXMF router
+message_router = LXMF.LXMRouter(identity = current_identity, storagepath = configdir)
+
+# Register a delivery destination (for yourself)
+# In this example we use the same Identity as we used
+# to instantiate the LXMF router. It could be a different one,
+# but it can also just be the same, depending on what you want.
+local_lxmf_destination = message_router.register_delivery_identity(current_identity, display_name=display_name)
+
+# Set a callback for when a message is received
+message_router.register_delivery_callback(lxmf_delivery)
+
+# Announce node properties
+
+RNS.log('LXMF Router ready to receive on: {}'.format(RNS.prettyhexrep(local_lxmf_destination.hash)), RNS.LOG_INFO)
+
+if r.exists('announce'):
+    RNS.log('Recent announcement', RNS.LOG_INFO)
+else:
+    r.set('announce', 1)
+    r.expire('announce', 1800)
+    announce_now(local_lxmf_destination)
+    RNS.log('Announcement sent, expr set 1800 seconds', RNS.LOG_INFO)
+
+while True:
+
+    for i in range(0, r.llen('message_queue')):
+        message_id = r.lpop('message_queue')
+        message = r.get(message_id)
+        r.delete(message_id)
+        destination_hash = message_id.split('_')[0]
+        RNS.log('{} {}'.format(destination_hash, message), RNS.LOG_INFO)
+        send_message(destination_hash, message)
+    time.sleep(10)