def start_connection(my_nick):
'''Connects to IRC using my_nick as nick and the settings for IRC
in the config file in shared.config_location.
No return - failure will be indicated by Exceptions.
'''
irc_socket.connect((config.get('IRC','irc_server'), int(config.get('IRC','irc_port'))))
irc_socket.send('USER %s %s %s %s' % ('these', 'arguments', 'are', 'optional') + '\r\n')
irc_socket.send('NICK ' + my_nick + '\r\n')
irc_socket.send('JOIN %s' % ('#'+config.get('IRC','channel_name')) + '\r\n')
irc_socket.settimeout(1)
def start_connection(my_nick):
'''Connects to IRC using my_nick as nick and the settings for IRC
in the config file in shared.config_location.
No return - failure will be indicated by Exceptions.
'''
irc_socket.connect(
(config.get('IRC', 'irc_server'), int(config.get('IRC', 'irc_port'))))
irc_socket.send('USER %s %s %s %s' %
('these', 'arguments', 'are', 'optional') + '\r\n')
irc_socket.send('NICK ' + my_nick + '\r\n')
irc_socket.send('JOIN %s' % ('#' + config.get('IRC', 'channel_name')) +
'\r\n')
irc_socket.settimeout(1)
def msg_receiver(my_nick,counterparty_nick):
msg_buffer = ''
try: msg_buffer = irc_socket.recv(1024)
except: return None #1 sec timeout
if not msg_buffer: return None
#sometimes the IRC server may pack multiple PRIVMSGs into one message separated with /r/n/
messages = msg_buffer.split('\r\n')
for onemsg in messages:
msg = onemsg.split()
if len(msg) == 0: continue #stray newline
if ping_pong(msg): continue
#filter irrelevant chan messages
if not len(msg) >= 5: continue
if not (msg[1] == 'PRIVMSG' and msg[2] == '#' + config.get('IRC','channel_name') and msg[3] == ':'+my_nick ): continue
if not counterparty_nick == find_nick(msg): continue
#this is one of our messages; output to console
ltc('RECEIVED:' + msg_buffer)
return msg[4:]
return None
def tlsn_initialise_messaging(my_nick):
'''Instantiate the connection for user my_nick and set up any parameters'''
global msg_chunk_size
msg_chunk_size = int(config.get('General', 'msg_chunk_size'))
global initialized
initialized = True
mi.start_connection(my_nick)
def msg_receiver(my_nick, counterparty_nick):
msg_buffer = ''
try:
msg_buffer = irc_socket.recv(1024)
except:
return None #1 sec timeout
if not msg_buffer: return None
#sometimes the IRC server may pack multiple PRIVMSGs into one message separated with /r/n/
messages = msg_buffer.split('\r\n')
for onemsg in messages:
msg = onemsg.split()
if len(msg) == 0: continue #stray newline
if ping_pong(msg): continue
#filter irrelevant chan messages
if not len(msg) >= 5: continue
if not (msg[1] == 'PRIVMSG'
and msg[2] == '#' + config.get('IRC', 'channel_name')
and msg[3] == ':' + my_nick):
continue
if not counterparty_nick == find_nick(msg): continue
#this is one of our messages; output to console
ltc('RECEIVED:' + msg_buffer)
return msg[4:]
return None
def tlsn_initialise_messaging(my_nick):
'''Instantiate the connection for user my_nick and set up any parameters'''
global msg_chunk_size
msg_chunk_size = int(config.get('General','msg_chunk_size'))
global initialized
initialized = True
mi.start_connection(my_nick)
def send_raw(data):
'''Sending a single message without authentication or acks
'''
bytes_sent = irc_socket.send('PRIVMSG ' + '#' +
config.get('IRC', 'channel_name') + ' ' +
data + ' \r\n')
ltc('SENT: ' + str(bytes_sent) + ' ' + data)
return bytes_sent
def receive_single_msg(my_nick=None):
'''Receive a single message of tlsnotary format either sent directly to this
nick (meaning message length is 7 including nick), or not specifically
to this nick (message length is 6).
Non blocking receipt; if no message is found or the message doesn't match,
returns False.
If a matching message is found, returns (<msg>,<nick of sending counterparty>)
'''
msg_buffer = ''
try:
msg_buffer = irc_socket.recv(1024)
except:
return False
if not msg_buffer: return False
ltc(msg_buffer)
#sometimes the IRC server may pack multiple PRIVMSGs into one message separated with /r/n/
messages = msg_buffer.split('\r\n')
for onemsg in messages:
msg = onemsg.split()
if len(msg) == 0: continue #stray newline
if ping_pong(msg): continue
if not ((len(msg) == 7 and my_nick) or
(len(msg) == 6 and not my_nick)):
continue
correct_without_nick = (msg[1] == 'PRIVMSG' and msg[2]
== '#' + config.get('IRC', 'channel_name'))
correct_with_nick = my_nick and (msg[1]=='PRIVMSG' and msg[2]=='#' + config.get('IRC','channel_name') \
and msg[3]==':'+my_nick)
if not ((my_nick and correct_with_nick) or (correct_without_nick)):
continue
if not my_nick:
return (msg[3:], find_nick(msg))
else:
return (msg[3:], find_nick(msg))
#no messages were a match
return False
def receive_single_msg(my_nick=None):
'''Receive a single message of tlsnotary format either sent directly to this
nick (meaning message length is 7 including nick), or not specifically
to this nick (message length is 6).
Non blocking receipt; if no message is found or the message doesn't match,
returns False.
If a matching message is found, returns (<msg>,<nick of sending counterparty>)
'''
msg_buffer = ''
try: msg_buffer = irc_socket.recv(1024)
except: return False
if not msg_buffer: return False
ltc(msg_buffer)
#sometimes the IRC server may pack multiple PRIVMSGs into one message separated with /r/n/
messages = msg_buffer.split('\r\n')
for onemsg in messages:
msg = onemsg.split()
if len(msg)==0 : continue #stray newline
if ping_pong(msg): continue
if not ((len(msg) == 7 and my_nick) or (len(msg) == 6 and not my_nick)): continue
correct_without_nick = (msg[1]=='PRIVMSG' and msg[2]=='#' + config.get('IRC','channel_name'))
correct_with_nick = my_nick and (msg[1]=='PRIVMSG' and msg[2]=='#' + config.get('IRC','channel_name') \
and msg[3]==':'+my_nick)
if not ((my_nick and correct_with_nick) or (correct_without_nick)):
continue
if not my_nick:
return (msg[3:],find_nick(msg))
else:
return (msg[3:],find_nick(msg))
#no messages were a match
return False
def send_raw(data):
'''Sending a single message without authentication or acks
'''
bytes_sent = irc_socket.send('PRIVMSG ' + '#' + config.get('IRC','channel_name') +' ' + data +' \r\n')
ltc('SENT: ' + str(bytes_sent) + ' ' + data)
return bytes_sent
