Limnoria/plugins/URL.py

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#!/usr/bin/env python
###
# Copyright (c) 2002, Jeremiah Fincher
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions, and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions, and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the author of this software nor the name of
# contributors to this software may be used to endorse or promote products
# derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
###
"""
Keeps track of URLs posted to a channel, along with relevant context. Allows
searching for URLs and returning random URLs. Also provides statistics on the
URLs in the database.
"""
import plugins
import os
import re
import time
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import getopt
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import urllib2
import urlparse
import sqlite
import conf
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import debug
import utils
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import ircmsgs
import ircutils
import privmsgs
import callbacks
def configure(onStart, afterConnect, advanced):
# This will be called by setup.py to configure this module. onStart and
# afterConnect are both lists. Append to onStart the commands you would
# like to be run when the bot is started; append to afterConnect the
# commands you would like to be run when the bot has finished connecting.
from questions import expect, anything, something, yn
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onStart.append('load URL')
class URL(callbacks.Privmsg, plugins.Configurable, plugins.ChannelDBHandler):
configurables = plugins.ConfigurableDictionary(
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[('tinyurl-snarfer', plugins.ConfigurableBoolType, True,
"""Determines whether the bot will output shorter versions of URLs
longer than the tinyurl-minimum-length config variable."""),
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('tinyurl-minimum-length', plugins.ConfigurableIntType, 46,
"""The minimum length a URL must be before the tinyurl-snarfer will
snarf it and offer a tinyurl replacement."""),]
)
def __init__(self):
self.nextMsgs = {}
callbacks.Privmsg.__init__(self)
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plugins.Configurable.__init__(self)
plugins.ChannelDBHandler.__init__(self)
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def die(self):
callbacks.Privmsg.die(self)
plugins.Configurable.die(self)
plugins.ChannelDBHandler.die(self)
def makeDb(self, filename):
if os.path.exists(filename):
return sqlite.connect(filename)
db = sqlite.connect(filename)
cursor = db.cursor()
cursor.execute("""CREATE TABLE urls (
id INTEGER PRIMARY KEY,
url TEXT,
added TIMESTAMP,
added_by TEXT,
previous_msg TEXT,
current_msg TEXT,
next_msg TEXT,
protocol TEXT,
site TEXT,
filename TEXT
)""")
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cursor.execute("""CREATE TABLE tinyurls (
id INTEGER PRIMARY KEY,
url_id INTEGER,
tinyurl TEXT
)""")
db.commit()
return db
_urlRe = re.compile(r"(\w+://[^\])>\s]+)", re.I)
def doPrivmsg(self, irc, msg):
channel = msg.args[0]
db = self.getDb(channel)
cursor = db.cursor()
if (msg.nick, channel) in self.nextMsgs:
L = self.nextMsgs.pop((msg.nick, msg.args[0]))
for (url, added) in L:
cursor.execute("""UPDATE urls SET next_msg=%s
WHERE url=%s AND added=%s""",
msg.args[1], url, added)
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if ircmsgs.isAction(msg):
text = ircmsgs.unAction(msg)
else:
text = msg.args[1]
for url in self._urlRe.findall(text):
(protocol, site, filename, _, _, _) = urlparse.urlparse(url)
previousMsg = ''
for oldMsg in reviter(irc.state.history):
if oldMsg.command == 'PRIVMSG':
if oldMsg.nick == msg.nick and oldMsg.args[0] == channel:
previousMsg = oldMsg.args[1]
addedBy = msg.nick
added = int(time.time())
cursor.execute("""INSERT INTO urls VALUES
(NULL, %s, %s, %s, %s, %s, '', %s, %s, %s)""",
url, added, addedBy, msg.args[1], previousMsg,
protocol, site, filename)
channel = msg.args[0]
snarf = self.configurables.get('tinyurl-snarfer', channel)
minlen = self.configurables.get('tinyurl-minimum-length', channel)
if snarf and len(url) > minlen:
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cursor.execute("""SELECT id FROM urls WHERE url=%s AND
added=%s AND added_by=%s""",
url, added, addedBy)
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if cursor.rowcount != 0:
#debug.printf(url)
tinyurl = self._getTinyUrl(url)
if tinyurl:
id = int(cursor.fetchone()[0])
cursor.execute("""INSERT INTO tinyurls
VALUES (NULL, %s, %s)""",id, tinyurl)
tinyurl = ircutils.bold(tinyurl)
s = '%s (was <%s>)' % (tinyurl, url)
irc.queueMsg(callbacks.reply(msg, s, prefixName=False))
key = (msg.nick, channel)
self.nextMsgs.setdefault(key, []).append((url, added))
db.commit()
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_tinyRe = re.compile(r'(http://tinyurl\.com/\w+)</blockquote>')
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def _getTinyUrl(self, url, cmd=False):
try:
#debug.printf('Trying to get tinyurl for %r' % url)
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fd = urllib2.urlopen('http://tinyurl.com/create.php?url=%s' % url)
s = fd.read()
fd.close()
m = self._tinyRe.search(s)
if m is None:
return None
return m.group(1)
except urllib2.HTTPError, e:
if cmd:
raise callbacks.Error, e.msg()
else:
debug.msg(e.msg())
def _formatUrl(self, url, added, addedBy):
#debug.printf((url, added, addedBy))
when = time.strftime(conf.humanTimestampFormat,
time.localtime(int(added)))
return '<%s> (added by %s at %s)' % (url, addedBy, when)
def _formatUrlWithId(self, id, url, added, addedBy):
#debug.printf((id, url, added, addedBy))
return '#%s: %s' % (id, self._formatUrl(url, added, addedBy))
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def random(self, irc, msg, args):
"""[<channel>]
Returns a random URL from the URL database. <channel> is only required
if the message isn't sent in the channel itself.
"""
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channel = privmsgs.getChannel(msg, args)
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("""SELECT id, url, added, added_by
FROM urls
ORDER BY random()
LIMIT 1""")
if cursor.rowcount == 0:
irc.reply(msg, 'I have no URLs in my database for %s' % channel)
else:
irc.reply(msg, self._formatUrlWithId(*cursor.fetchone()))
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def tiny(self, irc, msg, args):
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"""<url>
Returns a TinyURL.com version of <url>
"""
url = privmsgs.getArgs(args)
if self.configurables.get('tinyurl-snarfer', channel=msg.args[0]):
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return
url = self._getTinyUrl(url, cmd=True)
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if not url:
s = 'Could not parse the TinyURL.com results page. (%s)' % \
conf.replyPossibleBug
irc.error(msg, s)
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else:
irc.reply(msg, url)
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def num(self, irc, msg, args):
"""[<channel>]
Returns the number of URLs in the URL database. <channel> is only
required if the message isn't sent in the channel itself.
"""
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channel = privmsgs.getChannel(msg, args)
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("""SELECT COUNT(*) FROM urls""")
(count,) = cursor.fetchone()
irc.reply(msg, 'I have %s %s in my database.' % \
(count, int(count) == 1 and 'URL' or 'URLs'))
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def last(self, irc, msg, args):
"""[<channel>] [--{from,with,at,proto,near}=<value>] --{nolimit,fancy}
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Gives the last URL matching the given criteria. --from is from whom
the URL came; --at is the site of the URL; --proto is the protocol the
URL used; --with is something inside the URL; --near is a string in the
messages before and after the link. If --nolimit is given, returns as
many URLs as can fit in the message. --fancy returns information in
addition to just the URL. <channel> is only necessary if the
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message isn't sent in the channel itself.
"""
channel = privmsgs.getChannel(msg, args)
(optlist, rest) = getopt.getopt(args, '', ['from=', 'with=', 'at=',
'proto=', 'near=',
'nolimit', 'fancy'])
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criteria = ['1=1']
formats = []
simple = True
nolimit = False
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for (option, argument) in optlist:
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option = option.lstrip('-') # Strip off the --.
if option == 'nolimit':
nolimit = True
if option == 'fancy':
simple = False
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elif option == 'from':
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criteria.append('added_by LIKE %s')
formats.append(argument)
elif option == 'with':
if '%' not in argument and '_' not in argument:
argument = '%%%s%%' % argument
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criteria.append('url LIKE %s')
formats.append(argument)
elif option == 'at':
if '%' not in argument and '_' not in argument:
argument = '%' + argument
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criteria.append('site LIKE %s')
formats.append(argument)
elif option == 'proto':
criteria.append('protocol=%s')
formats.append(argument)
elif option == 'near':
criteria.append("""(previous_msg LIKE %s OR
next_msg LIKE %s OR
current_msg LIKE %s)""")
if '%' not in argument:
argument = '%%%s%%' % argument
formats.append(argument)
formats.append(argument)
formats.append(argument)
db = self.getDb(channel)
cursor = db.cursor()
criterion = ' AND '.join(criteria)
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sql = """SELECT id, url, added, added_by
FROM urls
WHERE %s ORDER BY id DESC
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LIMIT 100""" % criterion
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cursor.execute(sql, *formats)
if cursor.rowcount == 0:
irc.reply(msg, 'No URLs matched that criteria.')
else:
if nolimit:
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urls = ['<%s>' % t[1] for t in cursor.fetchall()]
s = ', '.join(urls)
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elif simple:
s = cursor.fetchone()[1]
else:
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(id, url, added, added_by) = cursor.fetchone()
timestamp = time.strftime('%I:%M %p, %B %d, %Y',
time.localtime(int(added)))
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s = '#%s: <%s>, added by %s at %s.' % \
(id, url, added_by, timestamp)
irc.reply(msg, s)
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Class = URL
# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78: