OutputScriptFactory::multisig() - Code Metrics - Inspection of "Merge pull request #412 from afk11/shorthand-scrip..." - Bit-Wasp/bitcoin-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( f74baa...bbb3f9 )

by thomas

created 2016-11-25 11:22 UTC

OutputScriptFactory::multisig() C

↳ Parent: OutputScriptFactory

Complexity

Conditions	7
Paths	9

Size

Total Lines	31
Code Lines	17

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	56

Importance

Changes

Metric	Value
cc	7
eloc	17
nc	9
nop	3
dl	0
loc	31
ccs	0
cts	4
cp	0
crap	56
rs	6.7272
c	0
b	0
f	0

<?php

namespace BitWasp\Bitcoin\Script\Factory;

use BitWasp\Bitcoin\Address\AddressInterface;
use BitWasp\Bitcoin\Address\ScriptHashAddress;
use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PublicKeyInterface;
use BitWasp\Bitcoin\Crypto\Hash;
use BitWasp\Bitcoin\Script\Opcodes;
use BitWasp\Bitcoin\Script\ScriptFactory;
use BitWasp\Bitcoin\Script\ScriptInterface;
use BitWasp\Buffertools\Buffer;
use BitWasp\Buffertools\BufferInterface;
use BitWasp\Buffertools\Buffertools;

class OutputScriptFactory
{
    /**
     * @param AddressInterface $address
     * @return ScriptInterface
     */
    public function payToAddress(AddressInterface $address)
    {
        return $address instanceof ScriptHashAddress
            ? ScriptFactory::sequence([Opcodes::OP_HASH160, $address->getHash(), Opcodes::OP_EQUAL])
            : ScriptFactory::sequence([Opcodes::OP_DUP, Opcodes::OP_HASH160, $address->getHash(), Opcodes::OP_EQUALVERIFY, Opcodes::OP_CHECKSIG]);
    }

    /**
     * @param PublicKeyInterface $publicKey
     * @return ScriptInterface
     */
    public function p2pk(PublicKeyInterface $publicKey)
    {
        return $this->payToPubKey($publicKey);
    }

    /**
     * @param BufferInterface $pubKeyHash
     * @return ScriptInterface
     */
    public function p2pkh(BufferInterface $pubKeyHash)
    {
        return $this->payToPubKeyHash($pubKeyHash);
    }

    /**
     * @param BufferInterface $scriptHash
     * @return ScriptInterface
     */
    public function p2sh(BufferInterface $scriptHash)
    {
        return $this->payToScriptHash($scriptHash);
    }

    /**
     * @param BufferInterface $witnessScriptHash
     * @return ScriptInterface
     */
    public function p2wsh(BufferInterface $witnessScriptHash)
    {
        return $this->witnessScriptHash($witnessScriptHash);
    }

    /**
     * @param BufferInterface $witnessKeyHash
     * @return ScriptInterface
     */
    public function p2wkh(BufferInterface $witnessKeyHash)
    {
        return $this->witnessKeyHash($witnessKeyHash);
    }
    /**
     * Create a Pay to pubkey output
     *
     * @param PublicKeyInterface  $publicKey
     * @return ScriptInterface
     */
    public function payToPubKey(PublicKeyInterface $publicKey)
    {
        return ScriptFactory::sequence([$publicKey->getBuffer(), Opcodes::OP_CHECKSIG]);
    }

    /**
     * Create a P2PKH output script
     *
     * @param BufferInterface $pubKeyHash
     * @return ScriptInterface
     */
    public function payToPubKeyHash(BufferInterface $pubKeyHash)
    {
        if ($pubKeyHash->getSize() !== 20) {
            throw new \RuntimeException('Public key hash must be exactly 20 bytes');
        }

        return ScriptFactory::sequence([Opcodes::OP_DUP, Opcodes::OP_HASH160, $pubKeyHash, Opcodes::OP_EQUALVERIFY, Opcodes::OP_CHECKSIG]);
    }

    /**
    /**
     * Create a P2SH output script
     *
     * @param BufferInterface $scriptHash
     * @return ScriptInterface
     */
    public function payToScriptHash(BufferInterface $scriptHash)
    {
        if ($scriptHash->getSize() !== 20) {
            throw new \RuntimeException('P2SH scriptHash must be exactly 20 bytes');
        }

        return ScriptFactory::sequence([Opcodes::OP_HASH160, $scriptHash, Opcodes::OP_EQUAL]);
    }

    /**
     * @param int $m
     * @param PublicKeyInterface[] $keys
     * @param bool|true $sort
     * @return ScriptInterface
     */
    public function multisig($m, array $keys = [], $sort = true)
    {
        $n = count($keys);
        if ($m < 0) {
            throw new \LogicException('Number of signatures cannot be less than zero');
        }

        if ($m > $n) {
            throw new \LogicException('Required number of sigs exceeds number of public keys');
        }

        if ($n > 20) {
            throw new \LogicException('Number of public keys is greater than 16');
        }

        if ($sort) {
            $keys = Buffertools::sort($keys);
        }

        $new = ScriptFactory::create();
        $new->int($m);
        foreach ($keys as $key) {
            if (!$key instanceof PublicKeyInterface) {
                throw new \LogicException('Values in $keys[] must be a PublicKey');
            }

            $new->push($key->getBuffer());
        }

        return $new->int($n)->op('OP_CHECKMULTISIG')->getScript();
    }

    /**
     * @param BufferInterface $keyHash
     * @return ScriptInterface
     */
    public function witnessKeyHash(BufferInterface $keyHash)
    {
        if ($keyHash->getSize() !== 20) {
            throw new \RuntimeException('witness key-hash should be 20 bytes');
        }

        return ScriptFactory::sequence([Opcodes::OP_0, $keyHash]);
    }

    /**
     * @param BufferInterface $scriptHash
     * @return ScriptInterface
     */
    public function witnessScriptHash(BufferInterface $scriptHash)
    {
        if ($scriptHash->getSize() !== 32) {
            throw new \RuntimeException('witness script-hash should be 32 bytes');
        }

        return ScriptFactory::sequence([Opcodes::OP_0, $scriptHash]);
    }

    /**
     * @param BufferInterface $commitment
     * @return ScriptInterface
     */
    public function witnessCoinbaseCommitment(BufferInterface $commitment)
    {
        if ($commitment->getSize() !== 32) {
            throw new \RuntimeException('Witness commitment hash must be exactly 32-bytes');
        }

        return ScriptFactory::sequence([
            Opcodes::OP_RETURN,
            new Buffer("\xaa\x21\xa9\xed" . $commitment->getBinary())
        ]);
    }
}


1		<?php
2
3		namespace BitWasp\Bitcoin\Script\Factory;
4
5		use BitWasp\Bitcoin\Address\AddressInterface;
6		use BitWasp\Bitcoin\Address\ScriptHashAddress;
7		use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PublicKeyInterface;
8		use BitWasp\Bitcoin\Crypto\Hash;
9		use BitWasp\Bitcoin\Script\Opcodes;
10		use BitWasp\Bitcoin\Script\ScriptFactory;
11		use BitWasp\Bitcoin\Script\ScriptInterface;
12		use BitWasp\Buffertools\Buffer;
13		use BitWasp\Buffertools\BufferInterface;
14		use BitWasp\Buffertools\Buffertools;
15
16		class OutputScriptFactory
17		{
18		/**
19		* @param AddressInterface $address
20	30	* @return ScriptInterface
21		*/
22	15	public function payToAddress(AddressInterface $address)
23	21	{
24	30	return $address instanceof ScriptHashAddress
25		? ScriptFactory::sequence([Opcodes::OP_HASH160, $address->getHash(), Opcodes::OP_EQUAL])
26		: ScriptFactory::sequence([Opcodes::OP_DUP, Opcodes::OP_HASH160, $address->getHash(), Opcodes::OP_EQUALVERIFY, Opcodes::OP_CHECKSIG]);
27		}
28
29		/**
30		* @param PublicKeyInterface $publicKey
31		* @return ScriptInterface
32		*/
33	30	public function p2pk(PublicKeyInterface $publicKey)
34		{
35	30	return $this->payToPubKey($publicKey);
36		}
37
38		/**
39		* @param BufferInterface $pubKeyHash
40		* @return ScriptInterface
41		*/
42		public function p2pkh(BufferInterface $pubKeyHash)
43		{
44	102	return $this->payToPubKeyHash($pubKeyHash);
45		}
46	102
47		/**
48		* @param BufferInterface $scriptHash
49		* @return ScriptInterface
50	102	*/
51		public function p2sh(BufferInterface $scriptHash)
52		{
53		return $this->payToScriptHash($scriptHash);
54		}
55
56		/**
57		* @param BufferInterface $witnessScriptHash
58		* @return ScriptInterface
59		*/
60	108	public function p2wsh(BufferInterface $witnessScriptHash)
61		{
62	108	return $this->witnessScriptHash($witnessScriptHash);
63		}
64
65		/**
66	108	* @param BufferInterface $witnessKeyHash
67		* @return ScriptInterface
68		*/
69		public function p2wkh(BufferInterface $witnessKeyHash)
70		{
71		return $this->witnessKeyHash($witnessKeyHash);
72		}
73		/**
74		* Create a Pay to pubkey output
75	72	*
76		* @param PublicKeyInterface $publicKey
77	72	* @return ScriptInterface
78	72	*/
79		public function payToPubKey(PublicKeyInterface $publicKey)
80		{
81		return ScriptFactory::sequence([$publicKey->getBuffer(), Opcodes::OP_CHECKSIG]);
82	72	}
83
84		/**
85		* Create a P2PKH output script
86	72	*
87		* @param BufferInterface $pubKeyHash
88		* @return ScriptInterface
89		*/
90	72	public function payToPubKeyHash(BufferInterface $pubKeyHash)
91	36	{
92	18	if ($pubKeyHash->getSize() !== 20) {
93		throw new \RuntimeException('Public key hash must be exactly 20 bytes');
94	72	}
95	72
96	72	return ScriptFactory::sequence([Opcodes::OP_DUP, Opcodes::OP_HASH160, $pubKeyHash, Opcodes::OP_EQUALVERIFY, Opcodes::OP_CHECKSIG]);
97	72	}
98
99		/**
100		/**
101	72	* Create a P2SH output script
102	36	*
103		* @param BufferInterface $scriptHash
104	72	* @return ScriptInterface
105		*/
106		public function payToScriptHash(BufferInterface $scriptHash)
107		{
108		if ($scriptHash->getSize() !== 20) {
109		throw new \RuntimeException('P2SH scriptHash must be exactly 20 bytes');
110		}
111
112		return ScriptFactory::sequence([Opcodes::OP_HASH160, $scriptHash, Opcodes::OP_EQUAL]);
113		}
114
115		/**
116		* @param int $m
117		* @param PublicKeyInterface[] $keys
118		* @param bool\|true $sort
119		* @return ScriptInterface
120		*/
121		public function multisig($m, array $keys = [], $sort = true)
122		{
123		$n = count($keys);
124		if ($m < 0) {
125		throw new \LogicException('Number of signatures cannot be less than zero');
126		}
127
128		if ($m > $n) {
129		throw new \LogicException('Required number of sigs exceeds number of public keys');
130		}
131
132		if ($n > 20) {
133		throw new \LogicException('Number of public keys is greater than 16');
134		}
135
136		if ($sort) {
137		$keys = Buffertools::sort($keys);
138		}
139
140		$new = ScriptFactory::create();
141		$new->int($m);
142		foreach ($keys as $key) {
143		if (!$key instanceof PublicKeyInterface) {
144		throw new \LogicException('Values in $keys[] must be a PublicKey');
145		}
146
147		$new->push($key->getBuffer());
148		}
149
150		return $new->int($n)->op('OP_CHECKMULTISIG')->getScript();
151		}
152
153		/**
154		* @param BufferInterface $keyHash
155		* @return ScriptInterface
156		*/
157		public function witnessKeyHash(BufferInterface $keyHash)
158		{
159		if ($keyHash->getSize() !== 20) {
160		throw new \RuntimeException('witness key-hash should be 20 bytes');
161		}
162
163		return ScriptFactory::sequence([Opcodes::OP_0, $keyHash]);
164		}
165
166		/**
167		* @param BufferInterface $scriptHash
168		* @return ScriptInterface
169		*/
170		public function witnessScriptHash(BufferInterface $scriptHash)
171		{
172		if ($scriptHash->getSize() !== 32) {
173		throw new \RuntimeException('witness script-hash should be 32 bytes');
174		}
175
176		return ScriptFactory::sequence([Opcodes::OP_0, $scriptHash]);
177		}
178
179		/**
180		* @param BufferInterface $commitment
181		* @return ScriptInterface
182		*/
183		public function witnessCoinbaseCommitment(BufferInterface $commitment)
184		{
185		if ($commitment->getSize() !== 32) {
186		throw new \RuntimeException('Witness commitment hash must be exactly 32-bytes');
187		}
188
189		return ScriptFactory::sequence([
190		Opcodes::OP_RETURN,
191		new Buffer("\xaa\x21\xa9\xed" . $commitment->getBinary())
192		]);
193		}
194		}
195

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OutputScriptFactory::multisig() C

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