+require 'uri'
+
Url = Struct.new("Url", :channel, :nick, :time, :url)
+TITLE_RE = /<\s*?title\s*?>(.+?)<\s*?\/title\s*?>/im
class UrlPlugin < Plugin
BotConfig.register BotConfigIntegerValue.new('url.max_urls',
:default => 100, :validate => Proc.new{|v| v > 0},
:desc => "Maximum number of urls to store. New urls replace oldest ones.")
-
+ BotConfig.register BotConfigBooleanValue.new('url.display_link_info',
+ :default => false,
+ :desc => "Get the title of any links pasted to the channel and display it (also tells if the link is broken or the site is down)")
+ BotConfig.register BotConfigBooleanValue.new('url.titles_only',
+ :default => false,
+ :desc => "Only show info for links that have <title> tags (in other words, don't display info for jpegs, mpegs, etc.)")
+
def initialize
super
@registry.set_default(Array.new)
end
+
def help(plugin, topic="")
"urls [<max>=4] => list <max> last urls mentioned in current channel, urls search [<max>=4] <regexp> => search for matching urls. In a private message, you must specify the channel to query, eg. urls <channel> [max], urls search <channel> [max] <regexp>"
end
+
+ def get_title_from_html(pagedata)
+ return unless TITLE_RE.match(pagedata)
+ title = $1.strip.gsub(/\s*\n+\s*/, " ")
+ title = Utils.decode_html_entities title
+ title = title[0..255] if title.length > 255
+ "[Link Info] title: #{title}"
+ end
+
+ def read_data_from_response(response, amount)
+
+ amount_read = 0
+ chunks = []
+
+ response.read_body do |chunk| # read body now
+
+ amount_read += chunk.length
+
+ if amount_read > amount
+ amount_of_overflow = amount_read - amount
+ chunk = chunk[0...-amount_of_overflow]
+ end
+
+ chunks << chunk
+
+ break if amount_read >= amount
+
+ end
+
+ chunks.join('')
+
+ end
+
+ def get_title_for_url(uri_str, depth=@bot.config['http.max_redir'])
+ # This god-awful mess is what the ruby http library has reduced me to.
+ # Python's HTTP lib is so much nicer. :~(
+
+ if depth == 0
+ raise "Error: Maximum redirects hit."
+ end
+
+ debug "+ Getting #{uri_str.to_s}"
+ url = uri_str.kind_of?(URI) ? uri_str : URI.parse(uri_str)
+ return if url.scheme !~ /https?/
+
+ title = nil
+
+ debug "+ connecting to #{url.host}:#{url.port}"
+ http = @bot.httputil.get_proxy(url)
+ http.start { |http|
+
+ http.request_get(url.request_uri(), @bot.httputil.headers) { |response|
+
+ case response
+ when Net::HTTPRedirection
+ # call self recursively if this is a redirect
+ redirect_to = response['location'] || '/'
+ debug "+ redirect location: #{redirect_to.inspect}"
+ url = URI.join(url.to_s, redirect_to)
+ debug "+ whee, redirecting to #{url.to_s}!"
+ return get_title_for_url(url, depth-1)
+ when Net::HTTPSuccess
+ if response['content-type'] =~ /^text\//
+ # since the content is 'text/*' and is small enough to
+ # be a webpage, retrieve the title from the page
+ debug "+ getting #{url.request_uri}"
+ # was 5*10^4 ... seems to much to me ... 4k should be enough for everybody ;)
+ data = read_data_from_response(response, 4096)
+ return get_title_from_html(data)
+ else
+ unless @bot.config['url.titles_only']
+ # content doesn't have title, just display info.
+ size = response['content-length'].gsub(/(\d)(?=\d{3}+(?:\.|$))(\d{3}\..*)?/,'\1,\2')
+ size = size ? ", size: #{size} bytes" : ""
+ return "[Link Info] type: #{response['content-type']}#{size}"
+ end
+ end
+ else
+ return "[Link Info] Error getting link (#{response.code} - #{response.message})"
+ end # end of "case response"
+
+ } # end of request block
+ } # end of http start block
+
+ return title
+
+ rescue SocketError => e
+ return "[Link Info] Error connecting to site (#{e.message})"
+ end
+
def listen(m)
return unless m.kind_of?(PrivMessage)
return if m.address?
if m.message =~ /((f|ht)tps?:\/\/.*?)(?:\s+|$)/
urlstr = $1
list = @registry[m.target]
+
+ if @bot.config['url.display_link_info']
+ debug "Getting title for #{urlstr}..."
+ begin
+ title = get_title_for_url urlstr
+ if title
+ m.reply title
+ debug "Title found!"
+ else
+ debug "Title not found!"
+ end
+ rescue => e
+ debug "Failed: #{e}"
+ end
+ end
+
# check to see if this url is already listed
- return if list.find {|u|
- u.url == urlstr
- }
+ return if list.find {|u| u.url == urlstr }
+
url = Url.new(m.target, m.sourcenick, Time.new, urlstr)
debug "#{list.length} urls so far"
if list.length > @bot.config['url.max_urls']
string = params[:string]
max = 10 if max > 10
max = 1 if max < 1
- regex = Regexp.new(string)
+ regex = Regexp.new(string, Regexp::IGNORECASE)
list = @registry[channel].find_all {|url|
regex.match(url.url) || regex.match(url.nick)
}