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#!/bin/bash
PROGRAM="$(basename $0)"
logit(){
ak-logthis "<$PROGRAM>" "$1" "$2"
}
if [ ! -z "$1" ] && [ ! -z "$2" ]
then
echo -n "$1" | grep -e 'Qm.\{44\}' >/dev/null
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Invalid hash format for $1"
exit 1
fi
ipfs --timeout=10s cat $1 > /dev/null
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Error while reading $1"
exit 1
fi
ipfs --timeout=10s cat $1 | json_pp > /dev/null
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Error while parsing JSON for $1"
exit 1
fi
ipfs --timeout=10s cat $1 | jq | grep ipfs > /dev/null
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Error while extracting data from JSON for $1"
exit 1
fi
DATA="$(ipfs --timeout=10s cat $1 | jq | grep ipfs | sed -e 's/"ipfs": "//g; s/[",]//g; s/ //g')"
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Error while extracting data from JSON for $1"
exit 1
fi
ipfs --timeout=10s cat $1 | jq | grep detach > /dev/null
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Error while extracting data from JSON for $1"
exit 1
fi
DETACH="$(ipfs --timeout=10s cat $1 | jq | grep detach | sed -e 's/"detach": "//g; s/[",]//g; s/ //g')"
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Error while extracting data from JSON for $1"
exit 1
fi
echo -n "$2" | grep -e 'Qm.\{44\}' >/dev/null
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Invalid hash format for $2"
exit 1
fi
gpg="$2"
ipfs --timeout=10s get $gpg > /dev/null 2>&1
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Could not get GPG key: $gpg"
exit 1
fi
gpg2 --import $gpg > /dev/null 2>&1
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Could not import GPG key: $gpg"
exit 1
fi
ipfs --timeout=10s get $DETACH > /dev/null 2>&1
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Error while getting signature: $DETACH for data: $DATA"
exit 1
fi
mv $DETACH $DATA.asc
logit "[INFO]" "Block signature downloaded"
ipfs --timeout=10s get $DATA > /dev/null 2>&1
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Error while getting data: $DATA"
exit 1
fi
logit "[INFO]" "Data downloaded: $DATA"
gpg2 --verify $DATA.asc $DATA > /dev/null 2>&1
if [ "$?" -ne 0 ]
then
logit "[ERROR]" "Error while verifying signature for $DATA"
exit 1
fi
logit "[INFO]" "Block signature verified"
echo -n '"data":{"'$1'":'$(ipfs --timeout=10s cat $1)'},'
exit 0
else
echo "Usage: $PROGRAM HASH GPG"
exit 1
fi
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