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# Copyright 2010-2011 Florent Le Coz <louiz@louiz.org>
#
# This file is part of Poezio.
#
# Poezio is free software: you can redistribute it and/or modify
# it under the terms of the zlib license. See the COPYING file.
from os import environ, makedirs
import mmap
import os
import re
from datetime import datetime
from config import config
from xhtml import clean_text
from theming import dump_tuple, get_theme
import logging
log = logging.getLogger(__name__)
from config import LOG_DIR
log_dir = os.path.join(LOG_DIR, 'logs')
message_log_re = re.compile('MR (\d{4})(\d{2})(\d{2})T(\d{2}):(\d{2}):(\d{2})Z (\d+) <([^ ]+)> (.*)')
info_log_re = re.compile('MI (\d{4})(\d{2})(\d{2})T(\d{2}):(\d{2}):(\d{2})Z (\d+) (.*)')
def parse_message_line(msg):
if re.match(message_log_re, msg):
return [i for i in re.split(message_log_re, msg) if i]
elif re.match(info_log_re, msg):
return [i for i in re.split(info_log_re, msg) if i]
return False
class Logger(object):
"""
Appends things to files. Error/information/warning logs
and also log the conversations to logfiles
"""
def __init__(self):
self.logfile = config.get('logfile', 'logs')
self.roster_logfile = None
# a dict of 'groupchatname': file-object (opened)
self.fds = dict()
def __del__(self):
for opened_file in self.fds.values():
if opened_file:
try:
opened_file.close()
except: # Can't close? too bad
pass
def reload_all(self):
"""Close and reload all the file handles (on SIGHUP)"""
for opened_file in self.fds.values():
if opened_file:
opened_file.close()
log.debug('All log file handles closed')
for room in self.fds:
self.fds[room] = self.check_and_create_log_dir(room)
log.debug('Log handle for %s re-created', room)
def check_and_create_log_dir(self, room, open_fd=True):
"""
Check that the directory where we want to log the messages
exists. if not, create it
"""
if config.get_by_tabname('use_log', 'true', room) == 'false':
return
try:
makedirs(log_dir)
except OSError as e:
if e.errno != 17: # file exists
log.error('Unable to create the log dir', exc_info=True)
except:
log.error('Unable to create the log dir', exc_info=True)
return
if not open_fd:
return
try:
fd = open(os.path.join(log_dir, room), 'a')
self.fds[room] = fd
return fd
except IOError:
log.error('Unable to open the log file (%s)',
os.path.join(log_dir, room),
exc_info=True)
def get_logs(self, jid, nb=10):
"""
Get the nb last messages from the log history for the given jid.
Note that a message may be more than one line in these files, so
this function is a little bit more complicated than “read the last
nb lines”.
"""
if config.get_by_tabname('load_log', 10, jid) <= 0:
return
if config.get_by_tabname('use_log', 'true', jid) == 'false':
return
if nb <= 0:
return
self.check_and_create_log_dir(jid, open_fd=False)
try:
fd = open(os.path.join(log_dir, jid), 'rb')
except:
log.error('Unable to open the log file (%s)',
os.path.join(log_dir, jid),
exc_info=True)
return
if not fd:
return
# read the needed data from the file, we just search nb messages by
# searching "\nM" nb times from the end of the file. We use mmap to
# do that efficiently, instead of seek()s and read()s which are costly.
with fd:
m = mmap.mmap(fd.fileno(), 0, prot=mmap.PROT_READ)
pos = m.rfind(b"\nM") # start of messages begin with MI or MR,
# after a \n
# number of message found so far
count = 0
while pos != -1 and count < nb-1:
count += 1
pos = m.rfind(b"\nM", 0, pos)
if pos == -1: # If we don't have enough lines in the file
pos = 1 # 1, because we do -1 just on the next line
# to get 0 (start of the file)
lines = m[pos-1:].decode(errors='replace').split("\n")[:-1]
messages = []
color = '\x19%s}' % dump_tuple(get_theme().COLOR_INFORMATION_TEXT)
# now convert that data into actual Message objects
idx = 0
while idx < len(lines):
if lines[idx].startswith(' '): # should not happen ; skip
idx += 1
log.debug('fail?')
continue
tup = parse_message_line(lines[idx])
idx += 1
if not tup or 7 > len(tup) > 10 : # skip
log.debug('format? %s', tup)
continue
time = [int(i) for index, i in enumerate(tup) if index < 6]
message = {'lines': [], 'history': True, 'time': datetime(*time)}
size = int(tup[6])
if len(tup) == 8: #info line
message['lines'].append(color+tup[7])
else: # message line
message['nickname'] = tup[7]
message['lines'].append(color+tup[8])
while size != 0 and idx < len(lines):
message['lines'].append(lines[idx][1:])
size -= 1
idx += 1
message['txt'] = '\n'.join(message['lines'])
del message['lines']
messages.append(message)
return messages
def log_message(self, jid, nick, msg, date=None, typ=1):
"""
log the message in the appropriate jid's file
type:
0 = Don’t log
1 = Message
2 = Status/whatever
"""
if not typ:
return True
jid = str(jid).replace('/', '\\')
if config.get_by_tabname('use_log', 'false', jid) != 'true':
return True
if jid in self.fds.keys():
fd = self.fds[jid]
else:
fd = self.check_and_create_log_dir(jid)
if not fd:
return True
try:
msg = clean_text(msg)
if date is None:
str_time = datetime.now().strftime('%Y%m%dT%H:%M:%SZ')
else:
str_time = date.strftime('%Y%m%dT%H:%M:%SZ')
if typ == 1:
prefix = 'MR'
else:
prefix = 'MI'
lines = msg.split('\n')
first_line = lines.pop(0)
nb_lines = str(len(lines)).zfill(3)
if nick:
nick = '<' + nick + '>'
fd.write(' '.join((prefix, str_time, nb_lines, nick, ' '+first_line, '\n')))
else:
fd.write(' '.join((prefix, str_time, nb_lines, first_line, '\n')))
for line in lines:
fd.write(' %s\n' % line)
except:
log.error('Unable to write in the log file (%s)',
os.path.join(log_dir, jid),
exc_info=True)
return False
else:
try:
fd.flush() # TODO do something better here?
except:
log.error('Unable to flush the log file (%s)',
os.path.join(log_dir, jid),
exc_info=True)
return False
return True
def log_roster_change(self, jid, message):
"""
Log a roster change
"""
if config.get_by_tabname('use_log', 'false', jid) != 'true':
return True
self.check_and_create_log_dir('', open_fd=False)
if not self.roster_logfile:
try:
self.roster_logfile = open(os.path.join(log_dir, 'roster.log'), 'a')
except IOError:
log.error('Unable to create the log file (%s)',
os.path.join(log_dir, 'roster.log'),
exc_info=True)
return False
try:
str_time = datetime.now().strftime('%Y%m%dT%H:%M:%SZ')
message = clean_text(message)
lines = message.split('\n')
first_line = lines.pop(0)
nb_lines = str(len(lines)).zfill(3)
self.roster_logfile.write('MI %s %s %s %s\n' % (str_time, nb_lines, jid, first_line))
for line in lines:
self.roster_logfile.write(' %s\n' % line)
self.roster_logfile.flush()
except:
log.error('Unable to write in the log file (%s)',
os.path.join(log_dir, 'roster.log'),
exc_info=True)
return False
return True
logger = Logger()
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