127 lines
3.5 KiB
Python
Executable File
127 lines
3.5 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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head.py - Phenny HTTP Metadata Utilities
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Copyright 2008, Sean B. Palmer, inamidst.com
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Licensed under the Eiffel Forum License 2.
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http://inamidst.com/phenny/
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"""
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import re, urllib, urlparse
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from htmlentitydefs import name2codepoint
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import web
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from tools import deprecated
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@deprecated
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def f_httphead(self, origin, match, args):
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""".head <URI> <FieldName>? - Perform an HTTP HEAD on URI."""
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if origin.sender == '#talis': return
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uri = match.group(2)
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header = match.group(3)
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try: info = web.head(uri)
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except IOError:
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self.msg(origin.sender, "Can't connect to %s" % uri)
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return
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if not isinstance(info, list):
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info = dict(info)
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info['Status'] = '200'
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else:
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newInfo = dict(info[0])
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newInfo['Status'] = str(info[1])
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info = newInfo
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if header is None:
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msg = 'Status: %s (for more, try ".head uri header")' % info['Status']
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self.msg(origin.sender, msg)
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else:
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headerlower = header.lower()
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if info.has_key(headerlower):
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self.msg(origin.sender, header + ': ' + info.get(headerlower))
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else:
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msg = 'There was no %s header in the response.' % header
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self.msg(origin.sender, msg)
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f_httphead.rule = (['head'], r'(\S+)(?: +(\S+))?')
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f_httphead.thread = True
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r_title = re.compile(r'(?ims)<title[^>]*>(.*?)</title\s*>')
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r_entity = re.compile(r'&[A-Za-z0-9#]+;')
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@deprecated
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def f_title(self, origin, match, args):
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""".title <URI> - Return the title of URI."""
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uri = match.group(2)
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if not ':' in uri:
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uri = 'http://' + uri
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try:
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redirects = 0
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while True:
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info = web.head(uri)
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if not isinstance(info, list):
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status = '200'
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else:
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status = str(info[1])
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info = info[0]
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if status.startswith('3'):
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uri = urlparse.urljoin(uri, info['Location'])
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else: break
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redirects += 1
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if redirects >= 25:
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self.msg(origin.sender, origin.nick + ": Too many redirects")
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return
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try: mtype = info['Content-Type']
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except:
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self.msg(origin.sender, origin.nick + ": Document isn't HTML")
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return
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if not (('/html' in mtype) or ('/xhtml' in mtype)):
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self.msg(origin.sender, origin.nick + ": Document isn't HTML")
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return
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u = urllib.urlopen(uri)
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bytes = u.read(32768)
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u.close()
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except IOError:
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self.msg(origin.sender, "Can't connect to %s" % uri)
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return
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m = r_title.search(bytes)
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if m:
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title = m.group(1)
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title = title.strip()
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title = title.replace('\t', ' ')
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title = title.replace('\r', ' ')
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title = title.replace('\n', ' ')
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while ' ' in title:
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title = title.replace(' ', ' ')
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if len(title) > 200:
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title = title[:200] + '[...]'
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def e(m):
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entity = m.group(0)
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if entity.startswith('&#x'):
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cp = int(entity[3:-1], 16)
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return unichr(cp).encode('utf-8')
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elif entity.startswith('&#'):
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cp = int(entity[2:-1])
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return unichr(cp).encode('utf-8')
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else:
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char = name2codepoint[entity[1:-1]]
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return unichr(char).encode('utf-8')
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title = r_entity.sub(e, title)
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if not title:
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title = '[Title is the empty document, "".]'
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self.msg(origin.sender, origin.nick + ': ' + title)
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else: self.msg(origin.sender, origin.nick + ': No title found')
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f_title.rule = (['title'], r'(\S+)')
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f_title.thread = True
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if __name__ == '__main__':
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print __doc__
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