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87 lines
2.8 KiB
87 lines
2.8 KiB
#!/bin/bash
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# LGSM git manifest functions
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# Author: Jared Ballou
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# Website: http://gameservermanagers.com
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#
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# This is another one of my POC tools. Eventually I want to have a pretty robust update/download system here
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# Goals:
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# * Keep function files up to date on client machines
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# * Deploy other programs or support tools
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# * Learn more about GitHub API
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# * Parse JSON in Bash
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# fn_get_git_hash $filename
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# Calculate the Git hash for a file
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function fn_get_git_hash(){
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filename=$1
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if [ -e $filename ]
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then
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filesize=$(stat --format='%s' $filename)
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if [ "$(tail -c1 $filename)" == "" ]; then
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printf "blob %d\0%s\n" "${filesize}" "$(cat $filename)" | sha1sum | awk '{print $1}'
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else
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printf "blob %d\0%s" "${filesize}" "$(cat $filename)" | sha1sum | awk '{print $1}'
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fi
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fi
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}
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fn_get_github_manifest(){
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# Create cache directory if missing
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if [ ! -e "${cachedir}" ]; then
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mkdir -p "${cachedir}"
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fi
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fn_getgithubfile "functions/jq-linux64"
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jq_path="${lgsmdir}/functions/jq-linux64"
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chmod +x "${jq_path}"
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# Get latest commit from GitHub. Cache file for 60 minutes
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if [ -e $lastcommit_file ]; then
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if [ $(($(date +%s) - $(date -r ${lastcommit_file} +%s))) -gt 3600 ]; then
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fetch=1
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else
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fetch=0
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fi
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else
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fetch=1
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fi
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if [ $fetch -eq 1 ]; then
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echo "Fetching ${lastcommit_file}"
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curl -s "https://api.github.com/repos/${githubuser}/${githubrepo}/git/refs/heads/${githubbranch}" -o "${lastcommit_file}.json"
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"${jq_path}" -r '.object.sha' "${lastcommit_file}.json" > "${lastcommit_file}"
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fi
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# Get manifest of all files at this revision in GitHub. These hashes are what we use to compare and select files that need to be updated.
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manifest="${cachedir}/$(cat "${lastcommit_file}").manifest"
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if [ ! -e "${manifest}.json" ]; then
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curl -Ls "https://api.github.com/repos/${githubuser}/${githubrepo}/git/trees/${githubbranch}?recursive=1" -o "${manifest}.json"
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fi
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if [ ! -e "${manifest}" ]; then
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"${jq_path}" -r '.tree[] | .path + " " + .sha' "${manifest}.json" > "${manifest}"
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fi
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}
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# Check files against manifest
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fn_check_github_files(){
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# Return unless turned on
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if [ "${git_update}" != "1" ]; then return; fi
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prefix=$1
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files=${@:2}
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fn_get_github_manifest
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manifest="${cachedir}/$(cat "${lastcommit_file}").manifest"
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# Check all files in functions for updates
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for file in $files; do
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if [ -d $file ]; then
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#echo "Descending into ${file}..."
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fn_check_github_files "${prefix}" ${file}/*
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else
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myhash=$(fn_get_git_hash $file)
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repofile=$(echo $file | sed -e "s|${1}[/]*||g")
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githash=$(grep "^$repofile " $manifest 2>/dev/null| cut -d" " -f2)
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if [ "${githash}" == "" ]; then
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echo "Can't find ${repofile} in git!"
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elif [ "${myhash}" != "${githash}" ]; then
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#echo "Would fetch ${repofile}: have ${myhash}, expected ${githash}"
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fn_getgithubfile "${repofile}" 0 "${repofile}" 1
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fi
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fi
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done
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}
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