gluon/contrib/sigtest.sh
2015-09-19 15:31:07 +02:00

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#!/bin/sh
if [ $# -eq 0 -o "-h" = "$1" -o "-help" = "$1" -o "--help" = "$1" ]; then
cat <<EOHELP
Usage: $0 <public> <signed manifest>
sigtest.sh checks if a manifest is signed by the public key <public>. There is
no output, success or failure is indicated via the return code.
See also:
* ecdsautils in https://github.com/tcatm/ecdsautils
* http://gluon.readthedocs.org/en/latest/features/autoupdater.html
EOHELP
exit 1
fi
public="$1"
manifest="$2"
upper="$(mktemp)"
lower="$(mktemp)"
ret=1
awk "BEGIN { sep=0 }
/^---\$/ { sep=1; next }
{ if(sep==0) print > \"$upper\";
else print > \"$lower\"}" \
"$manifest"
while read line
do
if ecdsaverify -s "$line" -p "$public" "$upper"; then
ret=0
break
fi
done < "$lower"
rm -f "$upper" "$lower"
exit $ret