ssh-audit/update_windows_man_page.sh

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#!/bin/bash
#
# The MIT License (MIT)
#
# Copyright (C) 2021 Joe Testa (jtesta@positronsecurity.com)
# Copyright (C) 2021 Adam Russell (<adam[at]thecliguy[dot]co[dot]uk>)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
################################################################################
# update_windows_man_page.sh
#
# PURPOSE
# Since Windows lacks a manual reader it's necessary to provide an alternative
# means of reading the man page.
#
# This script should be run as part of the ssh-audit packaging process for
# Windows. It populates the 'WINDOWS_MAN_PAGE' variable in 'globals.py' with
# the contents of the man page. Windows users can then print the content of
# 'WINDOWS_MAN_PAGE' by invoking ssh-audit with the manual parameters
# (--manual / -m).
#
# Cygwin is required.
#
# USAGE
# update_windows_man_page.sh [-m <path-to-man-page>] [-g <path-to-globals.py>]
#
################################################################################
function usage {
echo >&2 "Usage: $0 [-m <path-to-man-page>] [-g <path-to-globals.py>] [-h]"
echo >&2 " -m Specify an alternate man page path (default: ./ssh-audit.1)"
echo >&2 " -g Specify an alternate globals.py path (default: ./src/ssh_audit/globals.py)"
echo >&2 " -h This help message"
}
PLATFORM="$(uname -s)"
# This script is intended for use on Linux and Cygwin only.
case "$PLATFORM" in
Linux | CYGWIN*) ;;
*) echo "Platform not supported: $PLATFORM"
exit 1
;;
esac
MAN_PAGE=./ssh-audit.1
GLOBALS_PY=./src/ssh_audit/globals.py
while getopts "m: g: h" OPTION
do
case "$OPTION" in
m)
MAN_PAGE="$OPTARG"
;;
g)
GLOBALS_PY="$OPTARG"
;;
h)
usage
exit 0
;;
*)
echo >&2 "Invalid parameter(s) provided"
usage
exit 1
;;
esac
done
# Check that the specified files exist.
[ -f "$MAN_PAGE" ] || { echo >&2 "man page file not found: $MAN_PAGE"; exit 1; }
[ -f "$GLOBALS_PY" ] || { echo >&2 "globals.py file not found: $GLOBALS_PY"; exit 1; }
# Check that the 'ul' (do underlining) binary exists.
if [[ "$PLATFORM" = Linux ]]; then
command -v ul >/dev/null 2>&1 || { echo >&2 "ul not found."; exit 1; }
fi
# Check that the 'sed' (stream editor) binary exists.
command -v sed >/dev/null 2>&1 || { echo >&2 "sed not found."; exit 1; }
# Reset the globals.py file, in case it was modified from a prior run.
git checkout $GLOBALS_PY > /dev/null 2>&1
# Remove the Windows man page placeholder from 'globals.py'.
sed -i '/^WINDOWS_MAN_PAGE/d' "$GLOBALS_PY"
echo "Processing man page at ${MAN_PAGE} and placing output into ${GLOBALS_PY}..."
# Append the man page content to 'globals.py'.
# * man outputs a backspace-overwrite sequence rather than an ANSI escape
# sequence.
# * 'MAN_KEEP_FORMATTING' preserves the backspace-overwrite sequence when
# redirected to a file or a pipe.
# * sed converts unicode hyphens into an ASCI equivalent.
# * The 'ul' command converts the backspace-overwrite sequence to an ANSI
# escape sequence. Not required under Cygwin because man outputs ANSI escape
# codes automatically.
echo WINDOWS_MAN_PAGE = '"""' >> "$GLOBALS_PY"
if [[ "$PLATFORM" = CYGWIN* ]]; then
MANWIDTH=80 MAN_KEEP_FORMATTING=1 man "$MAN_PAGE" | sed $'s/\u2010/-/g' >> "$GLOBALS_PY"
else
MANWIDTH=80 MAN_KEEP_FORMATTING=1 man "$MAN_PAGE" | ul | sed $'s/\u2010/-/g' >> "$GLOBALS_PY"
fi
echo '"""' >> "$GLOBALS_PY"
echo "Done."
exit 0