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87 lines
2.2 KiB
87 lines
2.2 KiB
#!/bin/bash |
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# Download latest howto database to destination directory |
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# Features: |
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# - check for valid SHA-256 |
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# - skip download on remote data match local version (up to date) |
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# ========================================================================= |
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# Configuration |
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# ========================================================================= |
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ThisDir="/home/bdoku/howtools" |
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DataDir="/home/bdoku/howto-db" |
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RemoteHost="http://[222:a8e4:50cd:55c:788e:b0a5:4e2f:a92c]" |
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RemoteVersion=$(date -d "$date -1 days" +"%F")-23-30 |
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RemoteDataURL="${RemoteHost}/howto-wiki_${RemoteVersion}.tar.gz" |
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RemoteSHA256URL="${RemoteHost}/howto-wiki_${RemoteVersion}.tar.gz.sha-256" |
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RemoteSHA256TMP="${ThisDir}/tmp/remote.sha-256" |
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LocalSHA256TMP="${ThisDir}/tmp/local.sha-256" |
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LocalDataTMP="${ThisDir}/tmp/data.tar.gz" |
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# ========================================================================= |
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# Compare versions |
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# ========================================================================= |
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# Get remote SHA-256 |
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wget $RemoteSHA256URL -O $RemoteSHA256TMP |
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# Remote SHA-256 valid |
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RemoteSHA256=$(<$RemoteSHA256TMP) |
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if ! [[ ${RemoteSHA256:0:64} =~ ^([0-9a-f]{64})$ ]]; then |
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echo "Invalid remote SHA-256" |
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exit |
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fi |
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# Get local SHA-256 |
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if [[ -f $LocalSHA256TMP ]]; then |
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LocalSHA256=$(<$LocalSHA256TMP) |
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else |
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LocalSHA256="" |
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fi |
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# Compare versions |
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if [[ ${LocalSHA256:0:64} == ${RemoteSHA256:0:64} ]]; then |
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echo "DB is up to date!" |
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exit |
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fi |
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# ========================================================================= |
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# SHA-256 versions mismatch, begin update |
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# ========================================================================= |
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echo "Begin update..." |
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wget $RemoteDataURL -O $LocalDataTMP |
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# Generate SHA-256 |
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sha256sum $LocalDataTMP > $LocalSHA256TMP |
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if [[ -f $LocalSHA256TMP ]]; then |
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LocalSHA256=$(<$LocalSHA256TMP) |
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else |
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LocalSHA256="" |
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fi |
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# Check for download contain valid SHA-256 |
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if ! [[ ${LocalSHA256:0:64} =~ ^([0-9a-f]{64})$ ]]; then |
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echo "Invalid local SHA-256" |
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exit |
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fi |
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# Check for download match remote SHA-256 |
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if ! [[ ${LocalSHA256:0:64} == ${RemoteSHA256:0:64} ]]; then |
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echo "SHA-256 mismatch!" |
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exit |
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fi |
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# Begin update |
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echo "Unpack downloaded data to destination..." |
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tar -xvf $LocalDataTMP -C $DataDir |
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echo "Update completed!"
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