132 lines
4.2 KiB
Bash
Executable File
132 lines
4.2 KiB
Bash
Executable File
#!/bin/sh
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### update script for <ab-container> utility scripts
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# version x.y.z
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# script by Asif Bacchus
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# usage of this script is subject to the license terms found at:
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# https://git.asifbacchus.app/ab-docker/scripts/LICENSE
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### pre-requisites
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# check if wget is installed
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if ! command -v wget > /dev/null 2>&1; then
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printf "\nSorry, this script requires that 'wget' is installed in order to automatically update files.\nExiting.\n\n"
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exit 1
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fi
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# is user root or in the docker group?
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if [ ! "$( id -u )" -eq 0 ]; then
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if ! id -Gn | grep docker > /dev/null; then
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consoleError '1' "You must either be root or in the 'docker' group to run this script since you must be able to run 'docker exec' commands against the container!"
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fi
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fi
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# zero counters
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updatesAvailable=0
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downloadFailed=0
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downloadSuccess=0
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updateFailed=0
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updateSuccess=0
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# reference constants
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containerName=''
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server='https://git.asifbacchus.app/ab-docker/scripts/raw/branch/master/'
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checksumFilename='checksums.sha256'
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# files to update
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localScriptName='update.sh'
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repoScriptName="${containerName}-update.sh"
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updateFiles=""
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printf "\n*** Updating %s container service scripts ***\n\n" "$containerName"
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### download latest checksums
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printf "Getting latest checksums from ab-git server... "
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if ! wget --quiet --tries=3 --timeout=10 -N "${server}${checksumFilename}"; then
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printf "[ERROR]\n"
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printf "Unable to download checksums from ab-git server. Try again later.\n\n"
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exit 1
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else
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printf "[OK]\n"
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fi
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### check for updates to this script
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printf "Checking for updates to this script... "
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repoScriptChecksum=$( grep "$repoScriptName" "$checksumFilename" | grep -o '^\S*' )
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localScriptChecksum=$( sha256sum "$localScriptName" | grep -o '^\S*' )
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if [ "$localScriptChecksum" = "$repoScriptChecksum" ]; then
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printf "[NONE]\n"
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else
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# download updated script
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if ! wget --quiet --tries=3 --timeout=10 -O $localScriptName "${server}${repoScriptName}"; then
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printf "[ERROR]\n"
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printf "Unable to download script update. Try again later.\n\n"
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exit 1
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else
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# verify download
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localScriptChecksum=$( sha256sum "$localScriptName" | grep -o '^\S*' )
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if ! [ "$localScriptChecksum" = "$repoScriptChecksum" ]; then
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printf "[ERROR]\n"
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printf "Unable to verify checksum of updated script. Try again later.\n\n"
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else
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printf "[UPDATED]\n\n"
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printf "*** This script has been updated. Please re-run it to load the updated version of this file. ***\n\n"
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exit 0
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fi
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fi
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fi
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### update files
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set -- dummy $updateFiles
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shift
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for file; do
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updateTarget="$file"
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printf "\nChecking '%s' for updates... " "$updateTarget"
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repoFile=$( grep "$updateTarget" "$checksumFilename" | grep -o '^\S*' )
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if [ -f "$file" ]; then
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localFile=$( sha256sum "$updateTarget" | grep -o '^\S*' )
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else
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localFile=0
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fi
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if ! [ "$localFile" = "$repoFile" ]; then
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printf "[AVAILABLE]\n"
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updatesAvailable=$((updatesAvailable+1))
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# download update
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printf "Downloading updated '%s'... " "$updateTarget"
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# specify a name here instead of using the server name so that wget
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# overwrites the file
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if ! wget --quiet --tries=3 --timeout=10 -O "$updateTarget" "${server}${updateTarget}"; then
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printf "[ERROR]\n"
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downloadFailed=$((downloadFailed+1))
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else
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printf "[OK]\n"
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downloadSuccess=$((downloadSuccess+1))
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# verify download
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printf "Verifying '%s'... " "$updateTarget"
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localFile=$( sha256sum "$updateTarget" | grep -o '^\S*' )
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if ! [ "$localFile" = "$repoFile" ]; then
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printf "[INVALID]\n"
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updateFailed=$((updateFailed+1))
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else
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printf "[OK]\n"
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updateSuccess=$((updateSuccess+1))
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fi
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fi
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else
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printf "[NONE]\n"
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fi
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done
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### display results
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printf "\nResults:\n"
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printf "\tUpdates: %s available\n" "$updatesAvailable"
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printf "\tDownloads: %s successful, %s failed\n" "$downloadSuccess" "$downloadFailed"
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printf "\tUpdates: %s applied, %s failed\n" "$updateSuccess" "$updateFailed"
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exit 0 |