/usr/share/weechat/python/whatismyip.py is in weechat-scripts 20120603-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48  | # Copyright (c) 2010 by John Anderson <sontek@gmail.com>
#
# 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/>.
import weechat, urllib2
SCRIPT_NAME    = "whatismyip"
SCRIPT_AUTHOR  = "John Anderson <sontek@gmail.com>"
SCRIPT_VERSION = "0.1"
SCRIPT_LICENSE = "GPL3"
SCRIPT_DESC    = "Get your current external ip"
process_output = ""
def whatismyip(data, buffer, args):
    global process_output
    url = 'http://www.whatismyip.com/automation/n09230945.asp'
    process_output = ''
    python2_bin = weechat.info_get("python2_bin", "") or "python"
    url_hook_process = weechat.hook_process(
        python2_bin + " -c \"import urllib2; print urllib2.urlopen('" + url + "').readlines()[0]\"",
        30 * 1000, "process_complete", '')
    return weechat.WEECHAT_RC_OK
def process_complete(data, command, rc, stdout, stderr):
    global process_output
    process_output += stdout.strip()
    if int(rc) >= 0:
        weechat.prnt(weechat.current_buffer(), '[%s]' % process_output)
    return weechat.WEECHAT_RC_OK
if weechat.register(SCRIPT_NAME, SCRIPT_AUTHOR, SCRIPT_VERSION, SCRIPT_LICENSE,
                    SCRIPT_DESC, "", ""):
    weechat.hook_command("whatismyip", SCRIPT_DESC, "", "", "", "whatismyip", "")
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