mirror of
http://aero2k.de/t/repos/urlbot-native.git
synced 2017-09-06 15:25:38 +02:00
267 lines
6.9 KiB
Python
Executable File
267 lines
6.9 KiB
Python
Executable File
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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import sys, os, stat, re, time, pickle, random
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import urllib.request, urllib.parse, urllib.error, html.parser
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from local_config import conf, set_conf
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from common import *
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from strsim import str_sim
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# rate limiting to 5 messages per 10 minutes
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hist_ts = []
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hist_flag = True
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parser = None
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def fetch_page(url):
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logger('info', 'fetching page ' + url)
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try:
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request = urllib.request.Request(url)
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request.add_header('User-Agent', '''Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.0''')
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response = urllib.request.urlopen(request)
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html_text = response.read(BUFSIZ) # ignore more than BUFSIZ
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response.close()
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return (0, html_text, response.headers)
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except IOError as e:
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logger('warn', 'failed: ' + str(e))
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return (1, str(e), 'dummy')
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return (-1, None, None)
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def extract_title(url):
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global parser
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if 'repo/urlbot.git' in url:
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logger('info', 'repo URL found: ' + url)
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return (3, 'wee, that looks like my home repo!')
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logger('info', 'extracting title from ' + url)
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(code, html_text, headers) = fetch_page(url)
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if 1 == code:
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return (3, 'failed: %s for %s' %(html_text, url))
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if html_text:
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charset = ''
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if 'content-type' in headers:
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logger('debug', 'content-type: ' + headers['content-type'])
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if 'text/' != headers['content-type'][:len('text/')]:
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return (1, headers['content-type'])
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charset = re.sub('.*charset=(?P<charset>\S+).*',
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'\g<charset>', headers['content-type'], re.IGNORECASE)
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if '' != charset:
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try:
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html_text = html_text.decode(charset)
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except LookupError:
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logger('warn', 'invalid charset in ' + headers['content-type'])
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if str != type(html_text):
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html_text = str(html_text)
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result = re.match(r'.*?<title.*?>(.*?)</title>.*?', html_text, re.S | re.M | re.IGNORECASE)
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if result:
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match = result.groups()[0]
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if None == parser:
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parser = html.parser.HTMLParser()
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try:
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expanded_html = parser.unescape(match)
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except UnicodeDecodeError as e: # idk why this can happen, but it does
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logger('warn', 'parser.unescape() expoded here: ' + str(e))
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expanded_html = match
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return (0, expanded_html)
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else:
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return (2, 'no title')
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return (-1, 'error')
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def chat_write(message, prefix='/say '):
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set_conf('request_counter', conf('request_counter') + 1)
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if debug_enabled():
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print(message)
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else:
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try:
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fd = open(fifo_path, 'wb')
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# FIXME 2to3
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# FIXME: somehow, unicode chars can end up inside a <str> message,
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# which seems to make both unicode() and ''.encode('utf8') fail.
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try:
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msg = str(prefix) + str(message) + '\n'
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msg = msg.encode('utf8')
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except UnicodeDecodeError:
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msg = prefix + message + '\n'
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fd.write(msg)
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fd.close()
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except IOError:
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logger('err', "couldn't print to fifo " + fifo_path)
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def ratelimit_touch(ignored=None): # FIXME: separate counters
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hist_ts.append(time.time())
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if conf('hist_max_count') < len(hist_ts):
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hist_ts.pop(0)
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def ratelimit_exceeded(ignored=None): # FIXME: separate counters
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global hist_flag
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if conf('hist_max_count') < len(hist_ts):
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first = hist_ts.pop(0)
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if (time.time() - first) < conf('hist_max_time'):
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if hist_flag:
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hist_flag = False
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chat_write('(rate limited to %d messages in %d seconds, try again at %s)' %(conf('hist_max_count'), conf('hist_max_time'), time.strftime('%T %Z', time.localtime(hist_ts[0] + conf('hist_max_time')))))
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logger('warn', 'rate limiting exceeded: ' + pickle.dumps(hist_ts))
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return True
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hist_flag = True
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return False
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def extract_url(data):
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ret = None
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result = re.findall("(https?://[^\s>]+)", data)
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if result:
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for url in result:
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ratelimit_touch()
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if ratelimit_exceeded():
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return False
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# urllib.request is broken:
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# >>> '.'.encode('idna')
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# ....
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# UnicodeError: label empty or too long
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# >>> '.a.'.encode('idna')
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# ....
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# UnicodeError: label empty or too long
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# >>> 'a.a.'.encode('idna')
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# b'a.a.'
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try:
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(status, title) = extract_title(url)
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except UnicodeError:
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(status, title) = (4, None)
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if 0 == status:
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title = title.strip()
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lev_url = re.sub(r'https?://[^/]*/', '', url)
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lev_res = levenshtein(lev_url, title)
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lev_str = 'lev=%d/%d:%d ' %(lev_res, len(title), len(lev_url))
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sim = str_sim(title, lev_url)
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sim_len_title = len(sim)
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sim_len_url = len(sim[0])
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sim_sum = sum([sum(a) for a in sim])
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sim_str = 'sim=%d/%d:%d ' %(sim_sum, sim_len_title, sim_len_url)
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obj = conf_load()
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obj['lev'].append((lev_res, title, url))
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obj['sim'].append((sim_sum, sim_len_title, sim_len_url, title, url))
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conf_save(obj)
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message = 'Title: %s: %s' %(title, url)
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elif 1 == status:
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if conf('image_preview'):
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# of course it's fake, but it looks interesting at least
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char = """,._-+=\|/*`~"'"""
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message = 'No text but %s, 1-bit ASCII art preview: [%c] %s' %(
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title, random.choice(char), url
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)
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else:
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logger('info', 'no message sent for non-text %s (%s)' %(url, title))
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continue
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elif 2 == status:
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message = 'No title: %s' % url
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elif 3 == status:
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message = title
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elif 4 == status:
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message = 'Bug triggered, invalid URL/domain part: %s' % url
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logger('warn', message)
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else:
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message = 'some error occurred when fetching %s' % url
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message = message.replace('\n', '\\n')
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logger('info', 'printing ' + message)
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chat_write(message)
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ret = True
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return ret
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def parse_pn(data):
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## reply_user = data.split(' ')[0].strip('<>')
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# since we can't determine if a user named 'foo> ' just wrote ' > bar'
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# or a user 'foo' just wrote '> > bar', we can't safely answer here
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logger('warn', 'received PN: ' + data)
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return False
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def parse_delete(filepath):
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try:
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fd = open(filepath, 'r')
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except IOError:
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logger('err', 'file has vanished: ' + filepath)
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return False
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content = fd.read(BUFSIZ) # ignore more than BUFSIZ
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fd.close()
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os.remove(filepath) # probably better crash here
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if content[1:1+len(conf('bot_user'))] == conf('bot_user'):
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return
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if 'has set the subject to:' in content:
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return
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if content.startswith('PRIV#'):
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parse_pn(content)
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return
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if 'nospoiler' in content:
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# logger('info', "no spoiler for: " + content)
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return
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if True != extract_url(content):
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plugins.data_parse_commands(content)
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plugins.data_parse_other(content)
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return
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import plugins
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plugins.chat_write = chat_write
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plugins.ratelimit_exceeded = ratelimit_exceeded
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plugins.ratelimit_touch = ratelimit_touch
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plugins.register_all()
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if '__main__' == __name__:
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print(sys.argv[0] + ' ' + VERSION)
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if not os.path.exists(fifo_path):
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logger('error', 'fifo_path "%s" does not exist, exiting' % fifo_path)
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exit(1)
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if not stat.S_ISFIFO(os.stat(fifo_path).st_mode):
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logger('error', 'fifo_path "%s" is not a FIFO, exiting' % fifo_path)
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exit(1)
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while 1:
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try:
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for f in os.listdir(event_files_dir):
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if 'mcabber-' == f[:8]:
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parse_delete(os.path.join(event_files_dir, f))
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plugins.event_trigger()
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time.sleep(delay)
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except KeyboardInterrupt:
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print('')
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exit(130)
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