/usr/share/weechat/perl/expand_url.pl is in weechat-scripts 20180330-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (c) 2011-2014 by Nils Görs <weechatter@arcor.de>
#
# Get information on a short URL. Find out where it goes.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# 0.6 : fix regex for tag "nick_xxx"
# 0.5 : fix expand_own() tag "prefix_nick_ccc" (thanks roughnecks)
# : add item "%nick" for prefix (idea by roughnecks)
# : improved option "expander". Now more than one expander can be used (Thanks FiXato for some information about URLs)
# : add new options: "prefix" and "color_prefix"
# : add help text for options
# 0.4 : some code optimizations
# 0.3 : fixed: script won't worked if more than one URL per message exists.
# : fixed: output buffer wasn't correctly set for each message.
# : fixed: missing return in callback for hook_config()
# : added: if an URI exists twice in a message script will only print URI once.
# : added: option "expand_own" (default: off).
# : added: only private and public messages with string "://" will be caught
# 0.2 : add "://" in call to hook_print() (thanks to xt)
# 0.1 : internal release
#
# requirements:
# - URI::Find
# - apt-get install liburi-find-perl
#
# Development is currently hosted at
# https://github.com/weechatter/weechat-scripts
#
# This Script needs WeeChat 0.3.7 or higher
#
# You will find version 0.4:
# http://git.savannah.gnu.org/gitweb/?p=weechat/scripts.git;a=snapshot;h=7bb8ac448c25cf50829ff88d554765a4ff9470cd;sf=tgz
use strict;
use URI::Find;
my $PRGNAME = "expand_url";
my $version = "0.6";
my $AUTHOR = "Nils Görs <weechatter\@arcor.de>";
my $LICENSE = "GPL3";
my $DESC = "Get information on a short URL. Find out where it goes.";
# default values
my %options = ( "shortener" => "t.co/|goo.gl|tiny.cc|bit.ly|is.gd|tinyurl.com|ur1.ca",
"expander" => "http://untiny.me/api/1.0/extract?url= http://api.longurl.org/v1/expand?url= http://expandurl.com/api/v1/?url=",
"color" => "blue",
"prefix" => "[url]",
"color_prefix" => "blue",
"expand_own" => "off",
);
my %option_desc = ( "shortener" => "list of know shortener. \"|\" separated list",
"expander" => "list of expander to use in script. Please use a space \" \" to separate expander",
"color" => "color to use for expanded url in buffer",
"color_prefix" => "color for prefix",
"prefix" => "displayed prefix. You can use item \"\%nick\" to display nick in prefix (default: [url])",
"expand_own" => "own shortened urls will be expanded (on|off)",
);
my %uris;
my @url_expander; # used expander
my $url_expander_number = 0; # store number of expander
my $weechat_version;
sub hook_print_cb
{
my ( $data, $buffer, $date, $tags, $displayed, $highlight, $prefix, $message ) = @_;
my $tags2 = ",$tags,";
#return weechat::WEECHAT_RC_OK if ( not $tags2 =~ /,notify_[^,]+,/ ); # return if message is not from a nick.
#weechat::print("",$tags);
if ( lc($options{expand_own}) eq "off" )
{
# get servername from buffer
my $infolist = weechat::infolist_get("buffer",$buffer,"");
weechat::infolist_next($infolist);
my ($servername, undef) = split( /\./, weechat::infolist_string($infolist,"name") );
weechat::infolist_free($infolist);
my $my_nick = weechat::info_get( "irc_nick", $servername ); # get own nick
}
# if ( $tags2 =~ /,nick_[$my_nick,]+,/ ){
# if ( $tags2 =~ m/(^|,)nick_[$my_nick,]+,/ ){
# return weechat::WEECHAT_RC_OK;
# }
#}
my $nick_wo_suffix = ($tags2 =~ m/(^|,)nick_([^,]*)/) ? $2 : "";
return weechat::WEECHAT_RC_OK if ($nick_wo_suffix eq "");
# $tags =~ m/(^|,)nick_(.*),/;
# my $nick_wo_suffix = $2; # nickname without nick_suffix
# search uri in message. result in %uris
%uris = ();
my $finder = URI::Find->new( \&uri_find_cb );
my $how_many_found = $finder->find(\$message);
if ( $how_many_found >= 1 ){ # does message contains an url?
my @uris = keys %uris;
foreach my $uri (@uris) {
if ($uri =~ m/$options{shortener}/) { # known shortener used?
if ( $url_expander_number > 0 ){ # one expander exists?
my $expand_counter = 0;
weechat::hook_process("url:".$url_expander[$expand_counter].$uri, 10000 ,"hook_process_cb","$buffer $uri $expand_counter $nick_wo_suffix");
}
}
}
}
return weechat::WEECHAT_RC_OK;
}
# callback from hook_process()
sub hook_process_cb {
my ($data, $command, $return_code, $out, $err) = @_;
my ($buffer, $uri, $expand_counter, $nick_wo_suffix) = split(" ",$data);
# output not empty. Try to catch long URI
if ($out ne ""){
my $how_many_found = 0;
my @array = split(/\n/,$out); # split output to single raw lines
foreach ( @array ){
my $uri_only = "";
my $finder = URI::Find->new(sub {
my($uri, $orig_uri) = @_;
$uri_only = $orig_uri;
return $orig_uri;});
# my $finder = URI::Find->new( \&uri_find_one_cb );
$how_many_found = $finder->find(\$_);
my $print_suffix = weechat::color($options{color_prefix}).
$options{prefix};
if ( $how_many_found >= 1 ){ # does message contains at least one an url?
if ( grep /$options{prefix}/,"\%nick" ){
my $nick_color = weechat::info_get('irc_nick_color', $nick_wo_suffix);# get nick-color
$print_suffix = $options{prefix};
my $nick_prefix = $nick_color.
$nick_wo_suffix.
weechat::color($options{color_prefix});
$print_suffix =~ s/%nick/$nick_prefix/;
$print_suffix = weechat::color($options{color_prefix}).$print_suffix;
}
weechat::print($buffer, $print_suffix.
"\t".
weechat::color($options{color}).
$uri_only);
last;
}
}
return weechat::WEECHAT_RC_OK;
}elsif ($url_expander_number > 1){
$expand_counter++;
return weechat::WEECHAT_RC_OK if ($expand_counter > $url_expander_number - 1);
weechat::hook_process("url:".$url_expander[$expand_counter].$uri, 10000 ,"hook_process_cb","$buffer $uri $expand_counter $nick_wo_suffix");
return weechat::WEECHAT_RC_OK;
}
}
# callback from URI::Find
sub uri_find_cb {
my ( $uri_url, $uri ) = @_;
$uris{$uri}++;
return "";
}
#sub uri_find_one_cb {
#my ( $uri_url, $uri ) = @_;
# $uri_only = $uri;
#return "";
#}
# get settings or set them if they do not exists.
sub init_config{
foreach my $option (keys %options){
if (!weechat::config_is_set_plugin($option)){
weechat::config_set_plugin($option, $options{$option});
if ($option eq "expander"){
@url_expander = split(/ /,$options{expander}); # split expander
$url_expander_number = @url_expander;
}
}
else{
$options{$option} = weechat::config_get_plugin($option);
if ($option eq "expander"){
@url_expander = split(/ /,$options{expander}); # split expander
$url_expander_number = @url_expander;
}
}
}
# create help text
foreach my $option (keys %option_desc){
weechat::config_set_desc_plugin( $option,$option_desc{$option} );
}
}
# changes in settings hooked by hook_config()?
sub toggle_config_by_set{
my ( $pointer, $name, $value ) = @_;
$name = substr($name,length("plugins.var.perl.$PRGNAME."),length($name));
$options{$name} = $value;
if ($name eq "expander"){
@url_expander = split(/ /,$options{expander}); # split expander
$url_expander_number = @url_expander;
}
return weechat::WEECHAT_RC_OK ;
}
# first function called by a WeeChat-script.
weechat::register($PRGNAME, $AUTHOR, $version,$LICENSE, $DESC, "", "");
$weechat_version = weechat::info_get("version_number", "");
if (( $weechat_version eq "" ) or ( $weechat_version < 0x00030700 )){
weechat::print("",weechat::prefix("error")."$PRGNAME: needs WeeChat >= 0.3.7. Please upgrade: http://www.weechat.org/");
weechat::command("","/wait 1ms /perl unload $PRGNAME");
}
init_config();
#weechat::hook_print("", "", "://", 1, "hook_print_cb", ""); # only public messages with string "://" will be caught!
weechat::hook_print("", "notify_message", "://", 1, "hook_print_cb", ""); # only public messages with string "://" will be caught!
weechat::hook_print("", "notify_private", "://", 1, "hook_print_cb", ""); # only private messages with string "://" will be caught!
weechat::hook_print("", "notify_highlight", "://", 1, "hook_print_cb", ""); # only highlight messages with string "://" will be caught!
weechat::hook_print("", "notify_none", "://", 1, "hook_print_cb", ""); # check own messages
weechat::hook_config("plugins.var.perl.$PRGNAME.*", "toggle_config_by_set", "");# options changed?
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