Limnoria/plugins/Http.py

#!/usr/bin/env python

###
# Copyright (c) 2002-2004, Jeremiah Fincher
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# modification, are permitted provided that the following conditions are met:
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#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions, and the following disclaimer.
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#     documentation and/or other materials provided with the distribution.
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#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
#
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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###

"""
Provides several commands that go out to websites and get things.
"""

import supybot

__revision__ = "$Id$"
__contributors__ = {
    supybot.authors.jemfinch: ['bender', 'cyborg', 'doctype', 'freshmeat',
                               'headers', 'netcraft', 'size', 'title'],
    supybot.authors.jamessan: ['pgpkey', 'kernel', 'filext', 'zipinfo',
                               'acronym'],
    }

import supybot.plugins as plugins

import re
import sets
import getopt
import socket
import urllib
import xml.dom.minidom
from itertools import imap, ifilter

import supybot.conf as conf
import supybot.utils as utils
import supybot.webutils as webutils
import supybot.privmsgs as privmsgs
import supybot.registry as registry
import supybot.callbacks as callbacks

conf.registerPlugin('Http')

class FreshmeatException(Exception):
    pass

class Http(callbacks.PrivmsgCommand):
    threaded = True

    _titleRe = re.compile(r'<title>(.*?)</title>', re.I | re.S)

    def callCommand(self, name, irc, msg, *L, **kwargs):
        try:
            super(Http, self).callCommand(name, irc, msg, *L, **kwargs)
        except webutils.WebError, e:
            irc.error(str(e))

    def headers(self, irc, msg, args):
        """<url>

        Returns the HTTP headers of <url>.  Only HTTP urls are valid, of
        course.
        """
        url = privmsgs.getArgs(args)
        if not url.startswith('http://'):
            irc.error('Only HTTP urls are valid.')
            return
        fd = webutils.getUrlFd(url)
        try:
            s = ', '.join(['%s: %s' % (k, v) for (k, v) in fd.headers.items()])
            irc.reply(s)
        finally:
            fd.close()

    _doctypeRe = re.compile(r'(<!DOCTYPE[^>]+>)', re.M)
    def doctype(self, irc, msg, args):
        """<url>

        Returns the DOCTYPE string of <url>.  Only HTTP urls are valid, of
        course.
        """
        url = privmsgs.getArgs(args)
        if not url.startswith('http://'):
            irc.error('Only HTTP urls are valid.')
            return
        size = conf.supybot.protocols.http.peekSize()
        s = webutils.getUrl(url, size=size)
        m = self._doctypeRe.search(s)
        if m:
            s = utils.normalizeWhitespace(m.group(0))
            irc.reply(s)
        else:
            irc.reply('That URL has no specified doctype.')

    def size(self, irc, msg, args):
        """<url>

        Returns the Content-Length header of <url>.  Only HTTP urls are valid,
        of course.
        """
        url = privmsgs.getArgs(args)
        if not url.startswith('http://'):
            irc.error('Only HTTP urls are valid.')
            return
        fd = webutils.getUrlFd(url)
        try:
            try:
                size = fd.headers['Content-Length']
                irc.reply('%s is %s bytes long.' % (url, size))
            except KeyError:
                size = conf.supybot.protocols.http.peekSize()
                s = fd.read(size)
                if len(s) != size:
                    irc.reply('%s is %s bytes long.' % (url, len(s)))
                else:
                    irc.reply('The server didn\'t tell me how long %s is '
                              'but it\'s longer than %s bytes.' % (url, size))
        finally:
            fd.close()

    def title(self, irc, msg, args):
        """<url>

        Returns the HTML <title>...</title> of a URL.
        """
        url = privmsgs.getArgs(args)
        if '://' not in url:
            url = 'http://%s' % url
        size = conf.supybot.protocols.http.peekSize()
        text = webutils.getUrl(url, size=size)
        m = self._titleRe.search(text)
        if m is not None:
            irc.reply(utils.htmlToText(m.group(1).strip()))
        else:
            irc.reply('That URL appears to have no HTML title '
                      'within the first %s bytes.' % size)

    def freshmeat(self, irc, msg, args):
        """<project name>

        Returns Freshmeat data about a given project.
        """
        project = privmsgs.getArgs(args)
        project = ''.join(project.split())
        url = 'http://www.freshmeat.net/projects-xml/%s' % project
        try:
            text = webutils.getUrl(url)
            if text.startswith('Error'):
                text = text.split(None, 1)[1]
                raise FreshmeatException, text
            dom = xml.dom.minidom.parseString(text)
            def getNode(name):
                node = dom.getElementsByTagName(name)[0]
                return str(node.childNodes[0].data)
            project = getNode('projectname_full')
            version = getNode('latest_release_version')
            vitality = getNode('vitality_percent')
            popularity = getNode('popularity_percent')
            lastupdated = getNode('date_updated')
            irc.reply('%s, last updated %s, with a vitality percent of %s '
                      'and a popularity of %s, is in version %s.' %
                      (project, lastupdated, vitality, popularity, version))
        except FreshmeatException, e:
            irc.error(str(e))

    def stockquote(self, irc, msg, args):
        """<company symbol>

        Gets the information about the current price and change from the
        previous day of a given company (represented by a stock symbol).
        """
        symbol = privmsgs.getArgs(args)
        if ' ' in symbol:
            irc.error('Only one stockquote can be looked up at a time.')
            return
        url = 'http://finance.yahoo.com/d/quotes.csv?s=%s' \
              '&f=sl1d1t1c1ohgv&e=.csv' % symbol
        quote = webutils.getUrl(url)
        data = quote.split(',')
        if data[1] != '0.00':
            irc.reply('The current price of %s is %s, as of %s EST.  '
                      'A change of %s from the last business day.' %
                      (data[0][1:-1], data[1], data[3][1:-1], data[4]))
        else:
            m = 'I couldn\'t find a listing for %s' % symbol
            irc.error(m)

    _cyborgRe = re.compile(r'<p class="mediumheader">(.*?)</p>', re.I)
    def cyborg(self, irc, msg, args):
        """[<name>]

        Returns a cyborg acronym for <name> from <http://www.cyborgname.com/>.
        If <name> is not specified, uses that of the user.
        """
        name = privmsgs.getArgs(args, required=0, optional=1)
        if not name:
            name = msg.nick
        name = urllib.quote(name)
        url = 'http://www.cyborgname.com/cyborger.cgi?acronym=%s' % name
        html = webutils.getUrl(url)
        m = self._cyborgRe.search(html)
        if m:
            s = m.group(1)
            s = utils.normalizeWhitespace(s)
            irc.reply(s)
        else:
            irc.errorPossibleBug('No cyborg name returned.')

    _acronymre = re.compile(r'valign="middle" width="7\d%" bgcolor="[^"]+">'
                            r'(?:<b>)?([^<]+)')
    def acronym(self, irc, msg, args):
        """<acronym>

        Displays acronym matches from acronymfinder.com
        """
        acronym = privmsgs.getArgs(args)
        url = 'http://www.acronymfinder.com/' \
              'af-query.asp?String=exact&Acronym=%s' % urllib.quote(acronym)
        request = webutils.Request(url, headers={'User-agent':
          'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 4.0)'})
        html = webutils.getUrl(request)
        if 'daily limit' in html:
            s = 'Acronymfinder.com says I\'ve reached my daily limit.  Sorry.'
            irc.error(s)
            return
        # The following definitions are stripped and empties are removed.
        defs = filter(None, imap(str.strip, self._acronymre.findall(html)))
        utils.sortBy(lambda s: not s.startswith('[not an acronym]'), defs)
        for (i, s) in enumerate(defs):
            if s.startswith('[not an acronym]'):
                defs[i] = s.split('is ', 1)[1]
        if len(defs) == 0:
            irc.reply('No definitions found.')
        else:
            s = ', or '.join(defs)
            irc.reply('%s could be %s' % (acronym, s))

    _netcraftre = re.compile(r'td align="left">\s+<a[^>]+>(.*?)<a href',
                             re.S | re.I)
    def netcraft(self, irc, msg, args):
        """<hostname|ip>

        Returns Netcraft.com's determination of what operating system and
        webserver is running on the host given.
        """
        hostname = privmsgs.getArgs(args)
        url = 'http://uptime.netcraft.com/up/graph/?host=%s' % hostname
        html = webutils.getUrl(url)
        m = self._netcraftre.search(html)
        if m:
            html = m.group(1)
            s = utils.htmlToText(html, tagReplace='').strip()
            s = s.rstrip('-').strip()
            irc.reply(s) # Snip off "the site"
        elif 'We could not get any results' in html:
            irc.reply('No results found for %s.' % hostname)
        else:
            irc.error('The format of page the was odd.')

    def kernel(self, irc, msg, args):
        """takes no arguments

        Returns information about the current version of the Linux kernel.
        """
        fd = webutils.getUrlFd('http://kernel.org/kdist/finger_banner')
        try:
            stable = 'unknown'
            beta = 'unknown'
            for line in fd:
                (name, version) = line.split(':')
                if 'latest stable' in name:
                    stable = version.strip()
                elif 'latest beta' in name:
                    beta = version.strip()
        finally:
            fd.close()
        irc.reply('The latest stable kernel is %s; '
                  'the latest beta kernel is %s.' % (stable, beta))

    _pgpkeyre = re.compile(r'pub\s+\d{4}\w/<a href="([^"]+)">'
                           r'([^<]+)</a>[^>]+>([^<]+)</a>')
    def pgpkey(self, irc, msg, args):
        """<search words>

        Returns the results of querying pgp.mit.edu for keys that match
        the <search words>.
        """
        search = privmsgs.getArgs(args)
        urlClean = search.replace(' ', '+')
        host = 'http://pgp.mit.edu:11371'
        url = '%s/pks/lookup?op=index&search=%s' % (host, urlClean)
        fd = webutils.getUrlFd(url, headers={})
        try:
            L = []
            for line in iter(fd.next, ''):
                info = self._pgpkeyre.search(line)
                if info:
                    L.append('%s <%s%s>' % (info.group(3),host,info.group(1)))
            if len(L) == 0:
                irc.reply('No results found for %s.' % search)
            else:
                s = 'Matches found for %s: %s' % (search, ' :: '.join(L))
                irc.reply(s)
        finally:
            fd.close()

    _filextre = re.compile(
        r'<strong>Extension:</strong>.*?<tr>.*?</tr>\s+<tr>\s+<td colspan='
        r'"2">(?:<a href[^>]+>([^<]+)</a>\s+|([^<]+))</td>\s+<td>'
        r'(?:<a href[^>]+>([^<]+)</a>|<img src="images/spacer.gif"(.))',
        re.I|re.S)
    def extension(self, irc, msg, args):
        """<ext>

        Returns the results of querying filext.com for file extensions that
        match <ext>.
        """
        ext = privmsgs.getArgs(args)
        invalid = '|<>\^=?/[]";,*'
        for c in invalid:
            if c in ext:
                irc.error('\'%s\' is an invalid extension character' % c)
                return
        s = 'http://www.filext.com/detaillist.php?extdetail=%s&goButton=Go'
        text = webutils.getUrl(s % ext)
        matches = self._filextre.findall(text)
        #print matches
        res = []
        for match in matches:
            (file1, file2, comp1, comp2) = match
            if file1:
                filetype = file1.strip()
            else:
                filetype = file2.strip()
            if comp1:
                company = comp1.strip()
            else:
                company = comp2.strip()
            if company:
                res.append('%s\'s %s' % (company, filetype))
            else:
                res.append(filetype)
        if res:
            irc.reply(utils.commaAndify(res))
        else:
            irc.error('No matching file extensions were found.')

    _zipinfore = re.compile(r'Latitude<BR>\(([^)]+)\)</th><th>Longitude<BR>'
                            r'\(([^)]+)\).*?<tr>(.*?)</tr>', re.I)
    _zipstatre = re.compile(r'(Only about \d+,\d{3} of.*?in use.)')
    def zipinfo(self, irc, msg, args):
        """<zip code>

        Returns a plethora of information for the given <zip code>.
        """
        zipcode = privmsgs.getArgs(args)
        try:
            int(zipcode)
        except ValueError:
            irc.error('Zip code must be a 5-digit integer.')
            return
        if len(zipcode) != 5:
            irc.error('Zip code must be a 5-digit integer.')
            return
        url = 'http://zipinfo.com/cgi-local/zipsrch.exe?cnty=cnty&ac=ac&'\
              'tz=tz&ll=ll&zip=%s&Go=Go' % zipcode
        text = webutils.getUrl(url)
        if 'daily usage limit' in text:
            irc.error('I have exceeded the site\'s daily usage limit.')
            return
        m = self._zipstatre.search(text)
        if m:
            irc.reply('%s  %s is not one of them.' % (m.group(1), zipcode))
            return
        n = self._zipinfore.search(text)
        if not n:
            irc.error('Unable to retrieve information for that zip code.')
            return
        (latdir, longdir, rawinfo) = n.groups()
        # Info consists of the following (whitespace separated):
        # City, State Abbrev., Zip Code, County, FIPS Code, Area Code, Time
        # Zone, Daylight Time(?), Latitude, Longitude
        info = utils.htmlToText(rawinfo)
        info = info.split()
        zipindex = info.index(zipcode)
        resp = ['City: %s' % ' '.join(info[:zipindex-1]),
                'State: %s' % info[zipindex-1],
                'County: %s' % ' '.join(info[zipindex+1:-6]),
                'Area Code: %s' % info[-5],
                'Time Zone: %s' % info[-4],
                'Daylight Savings: %s' % info[-3],
                'Latitude: %s (%s)' % (info[-2], latdir),
                'Longitude: %s (%s)' % (info[-1], longdir),
               ]
        irc.reply('; '.join(resp))

    def futurama(self, irc, msg, args):
        """[{bender|fry}]

        Returns a random Bender or Fry (from Futurama) quote from Slashdot's
        HTTP headers.  If a name is specified, attempts to return a quote
        specific to that character.
        """
        name = privmsgs.getArgs(args, required=0, optional=1)
        fd = webutils.getUrlFd('http://slashdot.org/')
        try:
            if not name:
                if 'X-Bender' in fd.headers:
                    return '<Bender> %s' % fd.headers['X-Bender']
                elif 'X-Fry' in fd.headers:
                    return '<Fry> %s' % fd.headers['X-Fry']
                else:
                    return 'Slashdot seems to be running low on Futurama ' \
                           'quotes.'
            else:
                try:
                    return '<%s> %s' % (name, fd.headers['X-%s' % name])
                except KeyError:
                    return 'Slashdot seems to be running low on %s quotes' %\
                           name
        finally:
            fd.close()


Class = Http

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