grepurl

#!/bin/bash
# Author:  Michal Ambroz <rebus@seznam.cz>
# License: GPLv2+
#
#     Copyright (C) 2018  Michal Ambroz <rebus@seznam.cz>
#
#     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 2 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/>.
#
# Example:
#     grepurl malware.vba
#     ... look for strings, which might be URL


FULLURL="(https?|ftp|mailto)://[a-zA-Z0-9._/%?&=:@-]*"

#URI starting with "/ as in <form action="/something/blabla.php">
SLASHURI="\"/[a-zA-Z0-9._/%?&=-]*\""

#Some other uri containing PHP, ASP, HTML
SCRIPTURI="[a-zA-Z0-9.%/]*\.(html?|php|phtml|aspx?)[a-zA-Z0-9._/%?&=-]*"

PATTERN="$FULLURL|$SLASHURI|$SCRIPTURI"

grep -a -o -E "$PATTERN" "$@"