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#!/bin/sh
#
#    pbput, pbputs, pbget - put and get binary files to/from pastebin.com
#    Copyright (C) 2010 Dustin Kirkland <dustin.kirkland@gmail.com>
#
#    Authors: Dustin Kirkland <dustin.kirkland@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 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, write to the Free Software Foundation, Inc.,
#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

PROG=$(basename $0)
URL="paste.ubuntu.com"
TEMPLATE="$PROG.XXXXXXXXXX"
[ -d "$TMPDIR" ] && TEMPLATE="$TMPDIR/$TEMPLATE" || TEMPLATE="/tmp/$TEMPLATE"

# Create a secure tempfiles
TEMP=$(mktemp $TEMPLATE)
TEMP2=$(mktemp $TEMPLATE)
trap "rm -f $TEMP $TEMP2 2>/dev/null || true" EXIT HUP INT QUIT TERM

case "$PROG" in
	pbget)
		url=$(echo "$1")
		wget -q -O- "$url" | grep -A 999999999 '<div class="paste"><pre>' | grep -B 999999999 "^</pre>" | sed -e "s/.*<pre>//" -e "s/^<\/pre>.*//" | base64 -d | lzma -d > "$TEMP"
		# Support secure uploads
		if gpg -d "$TEMP" >"$TEMP2" 2>/dev/null; then
			# Upload was encrypted
			mv -f "$TEMP2" "$TEMP"
		fi
		if LC=C file "$TEMP" | grep -qs "^$TEMP: POSIX tar archive"; then
			# Download is a tarball; unpack safely
			[ -d "$2" ] && DIR="$2" || DIR=$(mktemp -d $TEMPLATE)
			tar -C "$DIR" -xvf "$TEMP" 2>/dev/null || cat "$TEMP"
			echo "INFO: Output is in [$DIR]"
		else
			# Upload came from stdin, so display on stdout
			cat "$TEMP"
		fi
	;;
	pbput|pbputs)
		if [ -r "$1" ]; then
			# Read file from argument
			tar cf "$TEMP" "$1"
			# Second argument indicates a target user in the gpg keyring
			[ -z "$2" ] && GPG_OPTS="-c" || GPG_OPTS="-s -e -r $2"
		else
			# Read from standard in
			cat /dev/stdin > "$TEMP"
			# Argument indicates a target user in the gpg keyring
			[ -z "$1" ] && GPG_OPTS="-c" || GPG_OPTS="-s -e -r $1"
		fi
		if [ "$PROG" = "pbputs" ]; then
			mv -f "$TEMP" "$TEMP".in
			cat "$TEMP".in | gpg $GPG_OPTS > "$TEMP"
			rm -f "$TEMP".in
		fi
		lzma -9 -f -c "$TEMP" | base64 | pastebinit -b "$URL"
	;;
	*)
		echo "ERROR" 1>&2
		exit 1
	;;
esac