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TXSkeleton.php
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TXSkeleton.php
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<?php
namespace BlockCypher\Api;
use BlockCypher\Common\BlockCypherResourceModel;
use BlockCypher\Crypto\PrivateKeyList;
use BlockCypher\Crypto\Signer;
use BlockCypher\Exception\BlockCypherSignatureException;
use BlockCypher\Exception\BlockCypherUncompressedKeyException;
use BlockCypher\Rest\ApiContext;
use BlockCypher\Transport\BlockCypherRestCall;
/**
* Class TXSkeleton
*
* A TXSkeleton is a convenience/wrapper Object that’s used primarily when Creating Transactions
* through the New and Send endpoints.
*
* @package BlockCypher\Api
*
* @property \BlockCypher\Api\TX tx
* @property string[] tosign
* @property string[] signatures
* @property string[] pubkeys
*/
class TXSkeleton extends BlockCypherResourceModel
{
/**
* Create a new transaction skeleton.
*
* @deprecated since version 1.2. Use TXClient.
* @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
* @param BlockCypherRestCall $restCall is the Rest Call Service that is used to make rest calls
* @return TXSkeleton
*/
public function create($apiContext = null, $restCall = null)
{
$payLoad = $this->toJSON();
$chainUrlPrefix = self::getChainUrlPrefix($apiContext);
$json = self::executeCall(
"$chainUrlPrefix/txs/new",
"POST",
$payLoad,
null,
$apiContext,
$restCall
);
$this->fromJson($json);
return $this;
}
/**
* Send the transaction to the network.
*
* @deprecated since version 1.2. Use TXClient.
* @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
* @param BlockCypherRestCall $restCall is the Rest Call Service that is used to make rest calls
* @return $this
*/
public function send($apiContext = null, $restCall = null)
{
$payLoad = $this->toJSON();
$chainUrlPrefix = self::getChainUrlPrefix($apiContext);
$json = self::executeCall(
"$chainUrlPrefix/txs/send",
"POST",
$payLoad,
null,
$apiContext,
$restCall
);
$this->fromJson($json);
return $this;
}
/**
* Sign the transaction skeleton.
*
* @param string[]|string $privateKeys
* @param string $coinSymbol
* @return $this
* @throws BlockCypherSignatureException
*/
public function sign($privateKeys, $coinSymbol)
{
if (is_string($privateKeys)) {
$privateKeys = array($privateKeys);
}
// Create PrivateKey objects from plain hex private keys (public keys compressed)
$privateKeyCompressedList = PrivateKeyList::fromHexPrivateKeyArray($privateKeys, $coinSymbol, true);
// Create PrivateKey objects from plain hex private keys (public keys uncompressed)
// Uncompressed keys are not supported by the API, we use them only to check if user is using them and
// show a specific exception.
$privateKeyUncompressedList = PrivateKeyList::fromHexPrivateKeyArray($privateKeys, $coinSymbol, false);
$this->generateSignatures($privateKeyCompressedList, $privateKeyUncompressedList, $coinSymbol);
return $this;
}
/**
* @param PrivateKeyList $privateKeyCompressedList
* @param PrivateKeyList $privateKeyUncompressedList
* @param string $coinSymbol
* @throws BlockCypherSignatureException
* @throws BlockCypherUncompressedKeyException
*/
private function generateSignatures($privateKeyCompressedList, $privateKeyUncompressedList, $coinSymbol)
{
$signatures = array();
$pubkeys = array();
$tosignIndex = 0;
$privateKeysUsed = array();
foreach ($this->getTxInputs() as $txInput) {
// Addresses can be network addresses or pubkeys (multisig txs)
$txInputAddresses = $txInput->getAddresses();
foreach ($txInputAddresses as $inputAddress) {
if ($privateKeyCompressedList->containsPrivateKeyFor($inputAddress, $coinSymbol)) {
// Get private key to sign
$privateKey = $privateKeyCompressedList->getPrivateKey($inputAddress, $coinSymbol);
// Signature
$signatures[] = Signer::sign($this->tosign[$tosignIndex], $privateKey);
// Pubkey
$pubkeys[] = $privateKey->getPublicKey()->getHex();
// Mark private key as used
$privateKeysUsed[] = $inputAddress;
} else {
if ($privateKeyUncompressedList->containsPrivateKeyFor($inputAddress, $coinSymbol)) {
throw new BlockCypherUncompressedKeyException(sprintf("Invalid private key for address %s. Address correspond to uncompressed public key. Uncompressed public keys are not supported.", $inputAddress));
} else {
// User has not provide a private key for this address
// API allows to send partially signed tx
// TODO: add log?
}
}
}
$tosignIndex++;
}
$numPrivateKeysNotUsed = $privateKeyCompressedList->length() - count($privateKeysUsed);
if ($numPrivateKeysNotUsed > 0) {
throw new BlockCypherSignatureException(sprintf("%s private keys do not correspond to any input. Please check private keys provided.", $numPrivateKeysNotUsed));
}
$this->signatures = $signatures;
$this->pubkeys = $pubkeys;
}
private function getTxInputs()
{
return $this->getTx()->getInputs();
}
/**
* A temporary TX, usually returned fully filled but missing input scripts.
*
* @return \BlockCypher\Api\TX
*/
public function getTx()
{
return $this->tx;
}
/**
* Return an array of all inputs addresses in the same order they are in the json tx skeleton
* @return \string[]
*/
public function getInputsAddresses()
{
$addresses = array();
foreach ($this->getTx()->getInputs() as $txInput) {
$inputAddresses = $txInput->getAddresses();
if (is_array($inputAddresses)) {
$addresses = array_merge($addresses, $inputAddresses);
}
}
return $addresses;
}
/**
* A temporary TX, usually returned fully filled but missing input scripts.
*
* @param \BlockCypher\Api\TX $tx
* @return $this
*/
public function setTx($tx)
{
$this->tx = $tx;
return $this;
}
/**
* Append Tosign to the list.
*
* @param string $tosign
* @return $this
*/
public function addTosign($tosign)
{
if (!$this->getTosign()) {
return $this->setTosign(array($tosign));
} else {
return $this->setTosign(
array_merge($this->getTosign(), array($tosign))
);
}
}
/**
* Array of hex-encoded data for you to sign, one for each input.
*
* @return \string[]
*/
public function getTosign()
{
return $this->tosign;
}
/**
* Array of hex-encoded data for you to sign, one for each input.
*
* @param \string[] $tosign
* @return $this
*/
public function setTosign($tosign)
{
$this->tosign = $tosign;
return $this;
}
/**
* Remove Tosign from the list.
*
* @param string $tosign
* @return $this
*/
public function removeTosign($tosign)
{
return $this->setTosign(
array_diff($this->getTosign(), array($tosign))
);
}
/**
* Append Signature to the list.
*
* @param string $signature
* @return $this
*/
public function addSignature($signature)
{
if (!$this->getSignatures()) {
return $this->setSignatures(array($signature));
} else {
return $this->setSignatures(
array_merge($this->getSignatures(), array($signature))
);
}
}
/**
* Array of signatures corresponding to all the data in tosign, typically provided by you.
*
* @return \string[]
*/
public function getSignatures()
{
return $this->signatures;
}
/**
* Array of signatures corresponding to all the data in tosign, typically provided by you.
*
* @param \string[] $signatures
* @return $this
*/
public function setSignatures($signatures)
{
$this->signatures = $signatures;
return $this;
}
/**
* Remove Signature from the list.
*
* @param string $signature
* @return $this
*/
public function removeSignature($signature)
{
return $this->setSignatures(
array_diff($this->getSignatures(), array($signature))
);
}
/**
* Append Pubkey to the list.
*
* @param string $pubkey
* @return $this
*/
public function addPubkey($pubkey)
{
if (!$this->getPubkeys()) {
return $this->setPubkeys(array($pubkey));
} else {
return $this->setPubkeys(
array_merge($this->getPubkeys(), array($pubkey))
);
}
}
/**
* Array of public keys corresponding to each signature.
* In general, these are provided by you, and correspond to the signatures you provide.
*
* @return \string[]
*/
public function getPubkeys()
{
return $this->pubkeys;
}
/**
* Array of public keys corresponding to each signature.
* In general, these are provided by you, and correspond to the signatures you provide.
*
* @param \string[] $pubkeys
* @return $this
*/
public function setPubkeys($pubkeys)
{
$this->pubkeys = $pubkeys;
return $this;
}
/**
* Remove Pubkey from the list.
*
* @param string $pubkey
* @return $this
*/
public function removePubkey($pubkey)
{
return $this->setPubkeys(
array_diff($this->getPubkeys(), array($pubkey))
);
}
}