Functionalizing and improving siteciphers
Added httpGet, checkOpenSSL, update, better usage, options, internet check, set delay with flag
This commit is contained in:
Alex Epstein
parent
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commit
a281d32bf0
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@ -1,28 +1,175 @@
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#!/bin/bash
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if [[ -z $1 ]]; then
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echo "usage: siteciphers <domain>"
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exit
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fi
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SERVER=$1:443
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DELAY=1
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ciphers=$(openssl ciphers 'ALL:eNULL' | sed -e 's/:/ /g')
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configuredClient=""
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currentVersion="1.11.2"
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for cipher in ${ciphers[@]}
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do
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result=$(echo -n | openssl s_client -cipher "$cipher" -connect $SERVER 2>&1)
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if [[ "$result" =~ ":error:" ]] ; then
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if [[ -z $2 ]]; then
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error=$(echo -n $result | cut -d':' -f6)
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echo "${cipher} - NO (${error})"
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fi
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else
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if [[ "$result" =~ "Cipher is ${cipher}" || "$result" =~ "Cipher :" ]] ; then
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echo "${cipher} - YES"
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checkOpenSSL()
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{
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if ! command -v openssl &>/dev/null ;then
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echo "Error: to use this tool openssl must be installed" >&2
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return 1
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else
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if [[ -z $2 ]]; then
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echo "${cipher} - UNKNOWN RESPONSE - ${result}"
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return 0
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fi
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}
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getConfiguredClient()
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{
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if command -v curl &>/dev/null ; then
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configuredClient="curl"
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elif command -v wget &>/dev/null ; then
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configuredClient="wget"
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elif command -v fetch &>/dev/null ; then
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configuredClient="fetch"
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else
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echo "Error: This tool reqires either curl, wget, or fetch to be installed."
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return 1
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fi
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}
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## Allows to call the users configured client without if statements everywhere
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httpGet()
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{
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case "$configuredClient" in
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curl) curl -A curl -s "$@";;
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wget) wget -qO- "$@";;
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fetch) fetch -o "...";;
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esac
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}
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update()
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{
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# Author: Alexander Epstein https://github.com/alexanderepstein
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# Update utility version 1.2.0
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# To test the tool enter in the defualt values that are in the examples for each variable
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repositoryName="Bash-Snippets" #Name of repostiory to be updated ex. Sandman-Lite
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githubUserName="alexanderepstein" #username that hosts the repostiory ex. alexanderepstein
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nameOfInstallFile="install.sh" # change this if the installer file has a different name be sure to include file extension if there is one
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latestVersion=$(httpGet https://api.github.com/repos/$githubUserName/$repositoryName/tags | grep -Eo '"name":.*?[^\\]",'| head -1 | grep -Eo "[0-9.]+" ) #always grabs the tag without the v option
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if [[ $currentVersion == "" || $repositoryName == "" || $githubUserName == "" || $nameOfInstallFile == "" ]];then
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echo "Error: update utility has not been configured correctly." >&2
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exit 1
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elif [[ $latestVersion == "" ]];then
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echo "Error: no active internet connection" >&2
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exit 1
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else
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if [[ "$latestVersion" != "$currentVersion" ]]; then
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echo "Version $latestVersion available"
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echo -n "Do you wish to update $repositoryName [Y/n]: "
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read -r answer
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if [[ "$answer" == "Y" || "$answer" == "y" ]] ;then
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cd ~ || { echo 'Update Failed' ; exit 1 ; }
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if [[ -d ~/$repositoryName ]]; then rm -r -f $repositoryName || { echo "Permissions Error: try running the update as sudo"; exit 1; } ; fi
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git clone "https://github.com/$githubUserName/$repositoryName" || { echo "Couldn't download latest version" ; exit 1; }
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cd $repositoryName || { echo 'Update Failed' ; exit 1 ;}
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git checkout "v$latestVersion" 2> /dev/null || git checkout "$latestVersion" 2> /dev/null || echo "Couldn't git checkout to stable release, updating to latest commit."
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chmod a+x install.sh #this might be necessary in your case but wasnt in mine.
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./$nameOfInstallFile "update" || exit 1
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cd ..
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rm -r -f $repositoryName || { echo "Permissions Error: update succesfull but cannot delete temp files located at ~/$repositoryName delete this directory with sudo"; exit 1; }
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else
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exit 1
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fi
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else
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echo "$repositoryName is already the latest version"
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fi
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fi
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}
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usage()
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{
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echo "Siteciphers"
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echo "Description: Checks the available ciphers for the SSL of an https site."
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echo "Usage: siteciphers [flag] or siteciphers [optionalDFlag] [website]"
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echo " -u Update Bash-Snippet Tools"
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echo " -h Show the help"
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echo " -v Get the tool version"
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echo " -d Set the delay between requests sent to the site (default is 1 sec)"
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echo "Examples:"
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echo " siteciphers github.com"
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echo " siteciphers -d 0.5 github.com"
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}
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checkInternet()
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{
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httpGet google.com > /dev/null 2>&1 || { echo "Error: no active internet connection" >&2; return 1; } # query google with a get request
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}
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checkCiphers()
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{
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ciphers=$(openssl ciphers 'ALL:eNULL' | sed -e 's/:/ /g') # grab all ciphers
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SERVER=$1:443 # setup the connection server
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for cipher in ${ciphers[*]} # for all possible ciphers
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do
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result=$(echo | openssl s_client -cipher "$cipher" -connect $SERVER 2>&1)
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if [[ "$result" =~ ":error:" ]] ; then
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if [[ -z $2 ]]; then
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error=$(echo -n $result | cut -d':' -f6)
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echo "$cipher - NO ($error)"
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fi
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else
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if [[ "$result" =~ "Cipher is $cipher" || "$result" =~ "Cipher :" ]] ; then
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echo "$cipher - YES"
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else
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if [[ -z $2 ]]; then
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echo "$cipher - UNKNOWN RESPONSE - $result"
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fi
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fi
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fi
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sleep $DELAY # sleep as to not overload the requests to the server
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done
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}
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checkOpenSSL || exit 1
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getConfiguredClient || exit 1
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checkInternet || exit 1
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if [[ $# == "0" ]]; then
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usage
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exit 1
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elif [[ $1 == "update" ]];then
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update
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exit 0
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elif [[ $1 == "help" ]];then
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usage
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exit 0
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fi
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sleep $DELAY
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while getopts "huvd:" opt; do ## alows for using options in bash
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case $opt in
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\?)
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echo "Invalid option: -$OPTARG" >&2
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exit 1
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;;
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d) #set the delay with the -d option
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DELAY=$OPTARG
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dFlag="1"
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;;
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u)
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update
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exit 0
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;;
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h)
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usage
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exit 0
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;;
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v)
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echo "Version $currentVersion"
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exit 0
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;;
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:) ## will run when no arguments are provided to to e or d options
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echo "Option -$OPTARG requires an argument." >&2
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exit 1
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;;
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esac
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done
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if [[ $dFlag == "1" ]];then checkCiphers $3 || exit 1; # if dflag is present input will look like siteciphers -d 0.5 github.com making the website the third arg
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else checkCiphers $1 || exit 1; fi
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