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#!/usr/bin/env bash
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#
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# archrisks - Get security risk severity & count of installed packages on Arch Linux
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# Copyright (C) 2021 Pekka Helenius
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#####################################
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red=$'\33[91m'
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orange=$'\033[38;5;208m'
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yellow=$'\033[93m'
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green=$'\033[92m'
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reset=$'\033[0m'
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typeset -A ARCH_MANAGERS
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# List of known Arch Linux package managers + priority number for each
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# Add more if you wish.
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# Syntax guidelines:
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# [<package manager priority (greater is more prioritized)>,<package manager>]="
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# <parameter to refresh local pkg repositories>|
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# <parameter to get detailed local pkg info>|
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# <parameter to get name and version string of a pkg>|
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# <parameter to get detailed remote pkg info>|
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# <root=requires root, no_root=does not require root>
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# "
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ARCH_MANAGERS=(
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[0,/usr/bin/pacman]="-Syy|-Qi|-Q|-Si|root"
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[1,/usr/bin/pacaur]="-Syy|-Qi|-Q|-Si|no_root"
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# [2,yaourt]="-Syy|-Qi|-Q|-Si|no_root"
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# [3,pikaur]="-Syy|-Qi|-Q|-Si|no_root"
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# [4,pacget]="-Syy|-Qi|-Q|-Si|no_root"
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# [5,yay]="-Syy|-Qi|-Q|-Si|no_root"
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# [6,foxaur]="-Syy|-Qi|-Q|-Si|no_root"
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# [7,aurum]="-Syy|-Qi|-Q|-Si|no_root"
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# [8,goaur]="-Syy|-Qi|-Q|-Si|no_root"
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# [9,aurs]="-Syy|-Qi|-Q|-Si|no_root"
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# [10,magico]="-Syy|-Qi|-Q|-Si|no_root"
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# [11,maur]="-Syy|-Qi|-Q|-Si|no_root"
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# [12,pkgbuilder]="-Syy|-Qi|-Q|-Si|no_root"
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# [13,spinach]="-Syy|-Qi|-Q|-Si|no_root"
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# [14,trizen]="-Syy|-Qi|-Q|-Si|no_root"
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)
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priority_lowlimit=-1
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default_order="level"
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default_reverse=0
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provider="security.archlinux.org"
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input_count=${#@}
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[[ $input_count -eq 1 ]] && input_1=${1}
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[[ $input_count -eq 2 ]] && input_1=${1}; input_2=${2}
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function helpCaller() {
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echo -e "
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Usage: $0
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-h|--help
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1st arg: --sort=<name,issues,level,status,desc> (optional)
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2nd arg: --reverse (optional)
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"
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exit 0
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}
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function inputParser() {
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if [[ ${input_count} -gt 2 ]] || [[ ${input_1} == "-h" ]] || [[ ${input_1} == "--help" ]]; then
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helpCaller
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elif [[ ${input_count} -eq 0 ]]; then
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sort_order=${default_order}
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sort_reverse=${default_reverse}
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else
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sort_order=$(echo ${input_1} | sed -r 's/^\-\-sort=(.*)/\1/')
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case ${sort_order} in
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name|issues|level|version|desc)
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echo "Custom sort order selected: ${sort_order}"
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;;
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*)
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echo "Unknown sorting order selected (${sort_order})."
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helpCaller
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esac
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if [[ ${input_count} -eq 2 ]]; then
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case ${input_2} in
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"--reverse")
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echo "Reverse ordering"
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sort_reverse=1
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;;
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*)
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echo "Unknown option '${input_2}'"
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sort_reverse=${default_reverse}
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esac
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fi
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fi
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}
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function internetTest() {
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if [[ $(ping -c 1 $provider 2>&1 | grep -c "Name or service not known") -ne 0 ]]; then
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echo -e "\nCan't connect to $provider. Please check your internet connection and try again.\n"
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exit 0
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fi
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}
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function findMyPackageManager() {
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i=0
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for managerStr in ${!ARCH_MANAGERS[@]}; do
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manager_priority=$(echo ${managerStr} | awk -F ',' '{print $1}')
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manager=$(echo ${managerStr} | awk -F ',' '{print $2}')
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if [[ ${manager_priority} -lt ${priority_lowlimit} ]]; then
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echo "Minimum priority is $((${priority_lowlimit} + 1)). You have a package which has lower priority value. Exiting."
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exit 1
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fi
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if [[ $(echo $(which ${manager} &>/dev/null)$?) -eq 0 ]]; then
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managers_list[$i]=${manager}
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managers_priority_list[$i]=${manager_priority}
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let i++
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fi
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done
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if [[ ${#managers_list[@]} -eq 0 ]]; then
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echo "Not any valid package manager found. Exiting."
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exit 1
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fi
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if [[ $(echo ${managers_priority_list[@]} | tr ' ' '\n' | uniq -d | wc -l) -ne 0 ]]; then
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echo "Package managers with same priority found. Check internal manager list for duplicates. Exiting."
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exit 1
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fi
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# Select package manager by priority. Highest is selected.
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i=0
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while [[ ${i} -le $((${#managers_list[@]} - 1)) ]]; do
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if [[ ${managers_priority_list[i]} -gt ${priority_lowlimit} ]]; then
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priority_lowlimit=${managers_priority_list[i]}
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selected_manager=${managers_list[i]}
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fi
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let i++
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done
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pkg_command=${ARCH_MANAGERS["$priority_lowlimit,$selected_manager"]}
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command_refresh=$(echo $pkg_command | awk -F '|' '{print $1}')
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command_pkginfo_local=$(echo $pkg_command | awk -F '|' '{print $2}')
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command_pkginfo_local_short=$(echo $pkg_command | awk -F '|' '{print $3}')
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command_pkginfo_remote=$(echo $pkg_command | awk -F '|' '{print $4}')
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command_require_root=$(echo $pkg_command | awk -F '|' '{print $5}')
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if [[ ${command_require_root} == "root" ]]; then
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if [[ ! $(id -u) -eq 0 ]]; then
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echo -e "\nThis command requires root privileges.\n"
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exit 0
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fi
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fi
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}
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function runTool() {
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echo "Security report date: $(date '+%d-%m-%Y, %X') (TZ: $(timedatectl status | grep "Time zone:" | awk '{print $3}'))"
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echo -e "\nSynchronizing package databases with ${selected_manager}\n"
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${selected_manager} ${command_refresh} || exit
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if [[ ! $(which arch-audit | wc -l) -eq 1 ]]; then
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echo -e "\nCouldn't find Arch Linux security utility (arch-audit) in \$PATH. Please make sure it's installed.\n"
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else
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count=0
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prs_count=0
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IFS=$'\n'
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for i in $(arch-audit); do
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package_name=$(echo "$i" | awk -F ' ' '{print $1}')
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risk_level=$(echo "$i" | grep -oE "Low|Medium|High|Critical")
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risks_count=$(echo "$i" | grep -oP "(?<=by ).+(?=\. )" | sed 's/, /\n/g' | wc -l)
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#risks_count=$(echo "$i" | awk -F 'CVE' '{print NF-1}')
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risks[$count]="$package_name $risk_level $risks_count"
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let count++
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done
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echo -e "\nAnalyzing ${#risks[*]} vulnerable packages. This takes a while...\n"
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i=1
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for risk_parsed in $(echo "${risks[*]}"); do
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echo -en "Analysing package ${i}/${#risks[*]}... \r"
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# Package in question
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col1=$(echo "$risk_parsed" | awk -F ' ' '{print $1}')
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# Security issues detected
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col2=$(echo "$risk_parsed" | awk -F ' ' '{print $3}')
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#Critical, High, Medium or Low risk
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col3=$(echo "$risk_parsed" | awk -F ' ' '{print $2}' | sed 's/Critical/0/g; s/High/1/g; s/Medium/2/g; s/Low/3/g')
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col5=$(${selected_manager} ${command_pkginfo_local} $col1 | grep -i description | awk -F ": " '{print $2}')
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maxchars=35
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if [[ $(echo $col5 | wc -m) -gt $maxchars ]]; then
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col5=$(echo "$(echo $col5 | cut -c 1-$maxchars)...")
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fi
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versioncheck() {
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# TODO: We can't really depend on parsing output strings since they vary between Arch package managers
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parsedver() {
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echo $1 | awk -F ' ' '{print $2}' | sed -r 's/[a-z]+.*//; s/[:_+-]/\./g; s/[^0-9]$//;'
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}
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# Expected output syntax: "^<string> <version number>$"
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# TODO: We can't really depend on parsing output strings since they vary between Arch package managers
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system_version=$(${selected_manager} ${command_pkginfo_local_short} $1)
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repo_version=$(${selected_manager} ${command_pkginfo_remote} $1 | grep -E "^Version\s*:" | sed -r 's/.*(:\s*.*$)/\1/')
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version_array_1=$(parsedver $system_version)
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version_array_2=$(parsedver $repo_version)
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#Count of version elements (0 18 2 1 contains 4 numbers, for example)
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firstvernums=$(echo $version_array_1 | awk -F '.' '{print split($0, a)}')
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lastvernums=$(echo $version_array_2 | awk -F '.' '{print split($0, a)}')
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# Count of comparable version elements (maximum)
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# We compare this much of elements, not more
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if [[ $lastvernums -lt $firstvernums ]]; then
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comparables=$lastvernums
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else
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comparables=$firstvernums
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fi
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# If all numbers are same, we don't analyze them more deeply.
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if [[ $version_array_1 == $version_array_2 ]]; then
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col4="${green}Package is updated"
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else
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s=1
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while [ $s -le $comparables ]; do
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check1=$(echo -e $version_array_1 | awk -v var=$s -F '.' '{print $var}')
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check2=$(echo -e $version_array_2 | awk -v var=$s -F '.' '{print $var}')
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if [[ $check2 -gt $check1 ]]; then
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# Repo number is greater
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col4="${yellow}Update available"
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break
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elif [[ $check2 -lt $check1 ]]; then
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# System number is greater
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col4="${reset}Newer package installed"
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break
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fi
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let s++
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done
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fi
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}
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versioncheck $col1
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risk_entries[$prs_count]=$(printf "%s|%s|%s|%s|%s\n" "$col1" "$col2" "$col3" "$col4" "$col5")
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let prs_count++
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let i++
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done
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echo -e "\e[1m"
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printf "\n%-25s%-20s%-15s%-25s%s\n" "Package" "Security issues" "Risk level" "Version status" "Description"
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echo -e "\e[0m"
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sort_params=()
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case ${sort_order} in
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name)
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sort_column="-k1"
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;;
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issues)
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sort_column="-k2"
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sort_params+=("-n")
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;;
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level)
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sort_column="-k3"
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;;
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version)
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sort_column="-k4"
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;;
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desc)
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sort_column="-k5"
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;;
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#*)
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# echo "Unknown sorting order selected. Exiting."
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# exit 1
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esac
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if [[ ${sort_reverse} == 1 ]]; then
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sort_params+=("-r")
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fi
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i=0
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for line in $(echo "${risk_entries[*]}" | sort ${sort_params[*]} -t'|' ${sort_column}); do
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if [[ $(echo "$line" | awk -F '|' '{print $3}') -eq 0 ]]; then
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alert_color="${red}"
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importance="Critical"
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elif [[ $(echo "$line" | awk -F '|' '{print $3}') -eq 1 ]]; then
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alert_color="${orange}"
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importance="High"
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elif [[ $(echo "$line" | awk -F '|' '{print $3}') -eq 2 ]]; then
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alert_color="${yellow}"
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importance="Medium"
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elif [[ $(echo "$line" | awk -F '|' '{print $3}') -eq 3 ]]; then
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alert_color="${green}"
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importance="Low"
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fi
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sec_count=$(echo "$line" | awk -F '|' '{print $2}')
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if [[ $sec_count -lt 5 ]]; then
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secclr="${green}"
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elif [[ $sec_count -ge 5 ]] && [[ $sec_count -lt 10 ]]; then
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secclr="${yellow}"
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elif [[ $sec_count -ge 10 ]] && [[ $sec_count -lt 20 ]]; then
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secclr="${orange}"
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elif [[ $sec_count -ge 20 ]]; then
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secclr="${red}"
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fi
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secsum[$i]=$sec_count
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echo "$line" | awk -F '|' -v clr1="${alert_color}" -v clr2="${secclr}" -v rs="${reset}" -v var="${importance}" '{printf "%-25s%s%-20s%s%-15s%-30s%s%s\n",$1,clr2,$2,clr1,var,$4,rs,$5}'
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let i++
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done
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secsums_total=$(echo $(printf "%d+" ${secsum[@]})0 | bc)
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echo -e "\nTotal:"
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printf "%-25s%s\n\n" "$count" "$secsums_total"
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printf "Check %s for more information.\n\n" "${provider}"
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fi
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}
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inputParser
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findMyPackageManager
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internetTest
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runTool
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