aboutsummaryrefslogtreecommitdiff
path: root/qa/rpc-tests/txnmall.sh
blob: 1296d54d92d7c6f0bd61aabe285aab9b4d43132b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
#!/usr/bin/env bash
# Copyright (c) 2014 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.

# Test proper accounting with malleable transactions

if [ $# -lt 1 ]; then
        echo "Usage: $0 path_to_binaries"
        echo "e.g. $0 ../../src"
        echo "Env vars BITCOIND and BITCOINCLI may be used to specify the exact binaries used"
        exit 1
fi

set -f

BITCOIND=${BITCOIND:-${1}/bitcoind}
CLI=${BITCOINCLI:-${1}/bitcoin-cli}

DIR="${BASH_SOURCE%/*}"
SENDANDWAIT="${DIR}/send.sh"
if [[ ! -d "$DIR" ]]; then DIR="$PWD"; fi
. "$DIR/util.sh"

D=$(mktemp -d test.XXXXX)

# Two nodes; one will play the part of merchant, the
# other an evil transaction-mutating miner.

D1=${D}/node1
CreateDataDir $D1 port=11000 rpcport=11001
B1ARGS="-datadir=$D1"
$BITCOIND $B1ARGS &
B1PID=$!

D2=${D}/node2
CreateDataDir $D2 port=11010 rpcport=11011
B2ARGS="-datadir=$D2"
$BITCOIND $B2ARGS &
B2PID=$!

# Wait until both nodes are at the same block number
function WaitBlocks {
    while :
    do
        sleep 1
        declare -i BLOCKS1=$( GetBlocks $B1ARGS )
        declare -i BLOCKS2=$( GetBlocks $B2ARGS )
        if (( BLOCKS1 == BLOCKS2 ))
        then
            break
        fi
    done
}

# Wait until node has $N peers
function WaitPeers {
    while :
    do
        declare -i PEERS=$( $CLI $1 getconnectioncount )
        if (( PEERS == "$2" ))
        then
            break
        fi
        sleep 1
    done
}

echo "Generating test blockchain..."

# Start with B2 connected to B1:
$CLI $B2ARGS addnode 127.0.0.1:11000 onetry
WaitPeers "$B1ARGS" 1

# 1 block, 50 XBT each == 50 XBT
$CLI $B1ARGS setgenerate true 1

WaitBlocks
# 100 blocks, 0 mature == 0 XBT
$CLI $B2ARGS setgenerate true 100
WaitBlocks

CheckBalance "$B1ARGS" 50
CheckBalance "$B2ARGS" 0

# restart B2 with no connection
$CLI $B2ARGS stop > /dev/null 2>&1
wait $B2PID
$BITCOIND $B2ARGS &
B2PID=$!

B2ADDRESS=$( $CLI $B2ARGS getaccountaddress "from1" )

# Have B1 create two transactions; second will
# spend change from first, since B1 starts with only a single
# 50 bitcoin output:
$CLI $B1ARGS move "" "foo" 10.0 > /dev/null
$CLI $B1ARGS move "" "bar" 10.0 > /dev/null
TXID1=$( $CLI $B1ARGS sendfrom foo $B2ADDRESS 1.0 0)
TXID2=$( $CLI $B1ARGS sendfrom bar $B2ADDRESS 2.0 0)

# Mutate TXID1 and add it to B2's memory pool:
RAWTX1=$( $CLI $B1ARGS getrawtransaction $TXID1 )
# RAWTX1 is hex-encoded, serialized transaction. So each
# byte is two characters; we'll prepend the first
# "push" in the scriptsig with OP_PUSHDATA1 (0x4c),
# and add one to the length of the signature.
# Fields are fixed; from the beginning:
# 4-byte version
# 1-byte varint number-of inputs (one in this case)
# 32-byte previous txid
# 4-byte previous output
# 1-byte varint length-of-scriptsig
# 1-byte PUSH this many bytes onto stack
#  ... etc
# So: to mutate, we want to get byte 41 (hex characters 82-83),
# increment it, and insert 0x4c after it.
L=${RAWTX1:82:2}
NEWLEN=$( printf "%x" $(( 16#$L + 1 )) )
MUTATEDTX1=${RAWTX1:0:82}${NEWLEN}4c${RAWTX1:84}
# ... give mutated tx1 to B2:
MUTATEDTXID=$( $CLI $B2ARGS sendrawtransaction $MUTATEDTX1 )

echo "TXID1: " $TXID1
echo "Mutated: " $MUTATEDTXID

# Re-connect nodes, and have B2 mine a block
# containing the mutant:
$CLI $B2ARGS addnode 127.0.0.1:11000 onetry
$CLI $B2ARGS setgenerate true 1
WaitBlocks

# B1 should have 49 BTC; the 2 BTC send is
# conflicted, and should not count in
# balances.
CheckBalance "$B1ARGS" 49
CheckBalance "$B1ARGS" 49 "*"
CheckBalance "$B1ARGS" 9 "foo"
CheckBalance "$B1ARGS" 10 "bar"

# B2 should have 51 BTC
CheckBalance "$B2ARGS" 51
CheckBalance "$B2ARGS" 1 "from1"

$CLI $B2ARGS stop > /dev/null 2>&1
wait $B2PID
$CLI $B1ARGS stop > /dev/null 2>&1
wait $B1PID

echo "Tests successful, cleaning up"
rm -rf $D
exit 0