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152 lines
3.8 KiB
152 lines
3.8 KiB
#!/usr/bin/env bash |
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# Copyright (c) 2014 The Bitcoin Core developers |
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# Distributed under the MIT software license, see the accompanying |
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# file COPYING or http://www.opensource.org/licenses/mit-license.php. |
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# Test proper accounting with malleable transactions |
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if [ $# -lt 1 ]; then |
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echo "Usage: $0 path_to_binaries" |
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echo "e.g. $0 ../../src" |
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echo "Env vars BITCOIND and BITCOINCLI may be used to specify the exact binaries used" |
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exit 1 |
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fi |
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set -f |
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BITCOIND=${BITCOIND:-${1}/bitcoind} |
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CLI=${BITCOINCLI:-${1}/bitcoin-cli} |
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DIR="${BASH_SOURCE%/*}" |
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SENDANDWAIT="${DIR}/send.sh" |
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if [[ ! -d "$DIR" ]]; then DIR="$PWD"; fi |
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. "$DIR/util.sh" |
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D=$(mktemp -d test.XXXXX) |
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# Two nodes; one will play the part of merchant, the |
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# other an evil transaction-mutating miner. |
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D1=${D}/node1 |
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CreateDataDir $D1 port=11000 rpcport=11001 |
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B1ARGS="-datadir=$D1" |
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$BITCOIND $B1ARGS & |
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B1PID=$! |
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D2=${D}/node2 |
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CreateDataDir $D2 port=11010 rpcport=11011 |
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B2ARGS="-datadir=$D2" |
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$BITCOIND $B2ARGS & |
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B2PID=$! |
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# Wait until both nodes are at the same block number |
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function WaitBlocks { |
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while : |
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do |
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sleep 1 |
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declare -i BLOCKS1=$( GetBlocks $B1ARGS ) |
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declare -i BLOCKS2=$( GetBlocks $B2ARGS ) |
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if (( BLOCKS1 == BLOCKS2 )) |
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then |
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break |
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fi |
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done |
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} |
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# Wait until node has $N peers |
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function WaitPeers { |
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while : |
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do |
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declare -i PEERS=$( $CLI $1 getconnectioncount ) |
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if (( PEERS == "$2" )) |
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then |
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break |
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fi |
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sleep 1 |
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done |
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} |
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echo "Generating test blockchain..." |
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# Start with B2 connected to B1: |
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$CLI $B2ARGS addnode 127.0.0.1:11000 onetry |
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WaitPeers "$B1ARGS" 1 |
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# 1 block, 50 XBT each == 50 XBT |
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$CLI $B1ARGS setgenerate true 1 |
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WaitBlocks |
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# 100 blocks, 0 mature == 0 XBT |
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$CLI $B2ARGS setgenerate true 100 |
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WaitBlocks |
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CheckBalance "$B1ARGS" 50 |
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CheckBalance "$B2ARGS" 0 |
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# restart B2 with no connection |
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$CLI $B2ARGS stop > /dev/null 2>&1 |
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wait $B2PID |
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$BITCOIND $B2ARGS & |
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B2PID=$! |
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B2ADDRESS=$( $CLI $B2ARGS getaccountaddress "from1" ) |
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# Have B1 create two transactions; second will |
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# spend change from first, since B1 starts with only a single |
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# 50 bitcoin output: |
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$CLI $B1ARGS move "" "foo" 10.0 > /dev/null |
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$CLI $B1ARGS move "" "bar" 10.0 > /dev/null |
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TXID1=$( $CLI $B1ARGS sendfrom foo $B2ADDRESS 1.0 0) |
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TXID2=$( $CLI $B1ARGS sendfrom bar $B2ADDRESS 2.0 0) |
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# Mutate TXID1 and add it to B2's memory pool: |
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RAWTX1=$( $CLI $B1ARGS getrawtransaction $TXID1 ) |
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# RAWTX1 is hex-encoded, serialized transaction. So each |
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# byte is two characters; we'll prepend the first |
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# "push" in the scriptsig with OP_PUSHDATA1 (0x4c), |
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# and add one to the length of the signature. |
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# Fields are fixed; from the beginning: |
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# 4-byte version |
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# 1-byte varint number-of inputs (one in this case) |
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# 32-byte previous txid |
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# 4-byte previous output |
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# 1-byte varint length-of-scriptsig |
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# 1-byte PUSH this many bytes onto stack |
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# ... etc |
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# So: to mutate, we want to get byte 41 (hex characters 82-83), |
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# increment it, and insert 0x4c after it. |
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L=${RAWTX1:82:2} |
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NEWLEN=$( printf "%x" $(( 16#$L + 1 )) ) |
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MUTATEDTX1=${RAWTX1:0:82}${NEWLEN}4c${RAWTX1:84} |
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# ... give mutated tx1 to B2: |
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MUTATEDTXID=$( $CLI $B2ARGS sendrawtransaction $MUTATEDTX1 ) |
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echo "TXID1: " $TXID1 |
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echo "Mutated: " $MUTATEDTXID |
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# Re-connect nodes, and have B2 mine a block |
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# containing the mutant: |
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$CLI $B2ARGS addnode 127.0.0.1:11000 onetry |
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$CLI $B2ARGS setgenerate true 1 |
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WaitBlocks |
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# B1 should have 49 BTC; the 2 BTC send is |
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# conflicted, and should not count in |
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# balances. |
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CheckBalance "$B1ARGS" 49 |
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CheckBalance "$B1ARGS" 49 "*" |
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CheckBalance "$B1ARGS" 9 "foo" |
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CheckBalance "$B1ARGS" 10 "bar" |
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# B2 should have 51 BTC |
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CheckBalance "$B2ARGS" 51 |
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CheckBalance "$B2ARGS" 1 "from1" |
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$CLI $B2ARGS stop > /dev/null 2>&1 |
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wait $B2PID |
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$CLI $B1ARGS stop > /dev/null 2>&1 |
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wait $B1PID |
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echo "Tests successful, cleaning up" |
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rm -rf $D |
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exit 0
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