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| -rw-r--r-- | scripts/savepads.sh | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/scripts/savepads.sh b/scripts/savepads.sh new file mode 100644 index 0000000..18a55bc --- /dev/null +++ b/scripts/savepads.sh @@ -0,0 +1,45 @@ +#! /usr/bin/env bash + +# +# A simple script that downloads sigsum's ms and db pads periodcally. +# Downloaded pads that are older than $age_days are silently removed. +# +# It is assumed that both pads contain the pattern $match. You may want +# to keep an eye on the resulting log file. It should always be empty. +# +# Crontab at the 16th minute every three hours: +# +# 16 */3 * * * /some/path/sigsum-savepads >>/some/log/file 2>&1 +# + +set -eu +trap EXIT + +prefix="https://pad.sigsum.org/p" +suffix="export/txt" +age_days=30 + +dir="$1"; shift +pads="sigsum-ms sigsum-db" +match="This pad describes" + +function main() { + for pad in $pads; do + src=$prefix/$pad/$suffix + dst=$dir/$(date "+%y%m%d-%H%M%S")_$pad + curl "$src" > "$dst" 2>/dev/null || + die_with_error "must fetch $pad" + + grep "$match" "$dst" || + die_with_error "expected \"$match\" to be in $src" + + find "$dir" -type f -mtime +$age_days -regextype posix-extended -regex "^.*[0-9]{6}-[0-9]{6}_$pad$" -delete + done +} + +function die_with_error(){ + echo "$(date \"+%y-%m-%d %H:%M:%S %Z\") [FATA]" "$@" >&2 + exit 1 +} + +main |