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#!/bin/bash
# Script to test revocation.
#
# Requires the wallet CLI to be installed and in the path. Furthermore, the
# user running this script must be Postgres superuser and be allowed to
# create/drop databases.
# Also the jq utility needs to be installed
echo -n "Testing for jq"
jq --version >/dev/null </dev/null || exit_skip " MISSING"
echo " FOUND"
source "common.sh"
setup_config "recoup"
TMP_DIR=$(mktemp -d revocation-tmp-XXXXXX)
taler-config -c "$CONF" -s exchange -o KEYDIR -V "${TMP_DIR}/keydir/"
taler-config -c "$CONF" -s exchange -o REVOCATION_DIR -V "${TMP_DIR}/revdir/"
setup_services
launch_services
wait_for_services
# run wallet CLI
echo "Running wallet"
taler-wallet-cli --wallet-db=$WALLET_DB --no-throttle \
testing withdraw \
-e $EXCHANGE_URL \
-b $BANK_URL \
-a TESTKUDOS:8
export coins=$(taler-wallet-cli --wallet-db=$WALLET_DB advanced dump-coins)
# Find coin we want to revoke
export rc=$(echo "$coins" | jq -r '[.coins[] | select((.denom_value == "TESTKUDOS:2"))][0] | .coin_pub')
# Find the denom
export rd=$(echo "$coins" | jq -r '[.coins[] | select((.denom_value == "TESTKUDOS:2"))][0] | .denom_pub_hash')
echo "Revoking denomination ${rd} (to affect coin ${rc})"
# Find all other coins, which will be suspended
export susp=$(echo "$coins" | jq --arg rc "$rc" '[.coins[] | select(.coin_pub != $rc) | .coin_pub]')
# Do the revocation
taler-exchange-keyup -o e2a2.dat -c $CONF -r $rd
taler-auditor-sign -c $CONF -u $AUDITOR_URL -r e2a2.dat -o a2e2.dat -m $MASTER_PUB
rm e2a2.dat
mv a2e2.dat $ABD
# Restart the exchange...
kill -SIGUSR1 $EXCHANGE_PID
sleep 1 # Give exchange time to re-scan data
echo "Restarted the exchange post revocation"
# Now we suspend the other coins, so later we will pay with the recouped coin
taler-wallet-cli --wallet-db=$WALLET_DB advanced suspend-coins "$susp"
# Update exchange /keys so recoup gets scheduled
taler-wallet-cli --wallet-db=$WALLET_DB exchanges update \
-f $EXCHANGE_URL
# Block until scheduled operations are done
taler-wallet-cli --wallet-db=$WALLET_DB run-until-done
# Now we buy something, only the coins resulting from recouped will be
# used, as other ones are suspended
taler-wallet-cli --wallet-db=$WALLET_DB testing test-pay \
-m $MERCHANT_URL -k sandbox \
-a "TESTKUDOS:1" -s "foo"
taler-wallet-cli --wallet-db=$WALLET_DB run-until-done
echo "Purchase with recoup'ed coin (via reserve) done"
# Find coin we want to refresh, then revoke
export rrc=$(echo "$coins" | jq -r '[.coins[] | select((.denom_value == "TESTKUDOS:5"))][0] | .coin_pub')
# Find the denom
export zombie_denom=$(echo "$coins" | jq -r '[.coins[] | select((.denom_value == "TESTKUDOS:5"))][0] | .denom_pub_hash')
echo "Will refresh coin ${rrc} of denomination ${zombie_denom}"
# Find all other coins, which will be suspended
export susp=$(echo "$coins" | jq --arg rrc "$rrc" '[.coins[] | select(.coin_pub != $rrc) | .coin_pub]')
export rrc
export zombie_denom
# Travel into the future! (must match DURATION_WITHDRAW option)
export TIMETRAVEL="--timetravel=604800000000"
echo "Launching exchange 1 week in the future"
kill -TERM $EXCHANGE_PID
taler-exchange-httpd $TIMETRAVEL -c $CONF 2> taler-exchange-httpd.log &
export EXCHANGE_PID=$!
# Wait for exchange to be available
for n in `seq 1 50`
do
echo -n "."
sleep 0.1
OK=0
# exchange
wget http://localhost:8081/ -o /dev/null -O /dev/null >/dev/null || continue
OK=1
break
done
echo "Refreshing coin $rrc"
taler-wallet-cli $TIMETRAVEL --wallet-db=$WALLET_DB advanced force-refresh "$rrc"
taler-wallet-cli $TIMETRAVEL --wallet-db=$WALLET_DB run-until-done
# Update our list of the coins
export coins=$(taler-wallet-cli $TIMETRAVEL --wallet-db=$WALLET_DB advanced dump-coins)
# Find resulting refreshed coin
export freshc=$(echo "$coins" | jq -r --arg rrc "$rrc" \
'[.coins[] | select((.refresh_parent_coin_pub == $rrc) and .denom_value == "TESTKUDOS:0.1")][0] | .coin_pub'
)
# Find the denom of freshc
export fresh_denom=$(echo "$coins" | jq -r --arg rrc "$rrc" \
'[.coins[] | select((.refresh_parent_coin_pub == $rrc) and .denom_value == "TESTKUDOS:0.1")][0] | .denom_pub_hash'
)
echo "Coin ${freshc} of denomination ${fresh_denom} is the result of the refresh"
# Find all other coins, which will be suspended
export susp=$(echo "$coins" | jq --arg freshc "$freshc" '[.coins[] | select(.coin_pub != $freshc) | .coin_pub]')
# Do the revocation of freshc
echo "Revoking ${fresh_denom} (to affect coin ${freshc})"
taler-exchange-keyup -c $CONF -o e2a3.dat -r $fresh_denom
taler-auditor-sign -c $CONF -u $AUDITOR_URL -r e2a3.dat -o a2e3.dat -m $MASTER_PUB
rm e2a3.dat
mv a2e3.dat $ABD
# Restart the exchange...
kill -SIGUSR1 $EXCHANGE_PID
sleep 1 # give exchange time to re-scan data
# Now we suspend the other coins, so later we will pay with the recouped coin
taler-wallet-cli $TIMETRAVEL --wallet-db=$WALLET_DB advanced suspend-coins "$susp"
# Update exchange /keys so recoup gets scheduled
taler-wallet-cli $TIMETRAVEL --wallet-db=$WALLET_DB exchanges update \
-f $EXCHANGE_URL
# Block until scheduled operations are done
taler-wallet-cli $TIMETRAVEL --wallet-db=$WALLET_DB run-until-done
echo "Restarting merchant (so new keys are known)"
kill -TERM $MERCHANT_PID
taler-merchant-httpd -c $CONF -L INFO 2> taler-merchant-httpd.log &
MERCHANT_PID=$!
# Wait for merchant to be again available
for n in `seq 1 50`
do
echo -n "."
sleep 0.1
OK=0
# merchant
wget http://localhost:9966/ -o /dev/null -O /dev/null >/dev/null || continue
OK=1
break
done
# Now we buy something, only the coins resulting from recoup+refresh will be
# used, as other ones are suspended
taler-wallet-cli $TIMETRAVEL --wallet-db=$WALLET_DB testing test-pay \
-m $MERCHANT_URL -k sandbox \
-a "TESTKUDOS:0.02" -s "bar"
taler-wallet-cli $TIMETRAVEL --wallet-db=$WALLET_DB run-until-done
echo "SUCCESS: Bought something with refresh-recouped coin"
rm -r "$TMP_DIR"
exit 0
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