I have been working around Bit-Wasp/bitcoin-php library for a while now and I encountered problems with it that I cannot resolve.
I have this as my code:
public function bitcoinWalletFromPublicKey($key, $index) {
$adapter = Bitcoin::getEcAdapter();
if (config('market.btc_network') == "mainnet") {
$btc = NetworkFactory::bitcoin();
$bitcoinPrefixes = new BitcoinRegistry();
} else {
$btc = NetworkFactory::bitcoinTestnet();
$bitcoinPrefixes = new BitcoinTestnetRegistry();
}
$slip132 = new Slip132(new KeyToScriptHelper($adapter));
$pubkeytype=substr($key, 0, 4);
if ($pubkeytype=='xpub' || $pubkeytype =='tpub') $pubPrefix = $slip132->p2pkh($bitcoinPrefixes);
if ($pubkeytype=='ypub') $pubPrefix = $slip132->p2shP2wpkh($bitcoinPrefixes);
if ($pubkeytype=='zpub' || $pubkeytype =='vpub') $pubPrefix = $slip132->p2wpkh($bitcoinPrefixes);
$config = new GlobalPrefixConfig([
new NetworkConfig($btc, [$pubPrefix])
]);
$serializer = new Base58ExtendedKeySerializer(
new ExtendedKeySerializer($adapter, $config)
);
$path = '0/' . $index;
$fkey = $serializer->parse($btc, $key);
$child_key = $fkey->derivePath($path);
#$account0Key = $child_key->derivePath("84'/0'/0'");
#$child_key = $fkey->derivePath("0/1");
//dd($child_key->getAddress(new AddressCreator())->getAddress());
return $child_key->getAddress(new AddressCreator())->getAddress();
}
I have two problems with this code:
Problem #1
On the first few lines of the code you will see that I used an If statement to check what network should it use. On my test im using testnet network and I'm sure as well that the code on my If / else { # code } works and it uses NetworkFactory::bitcoinTestnet() and new BitcoinTestnetRegistry() properly;
$key variable represents the Master Public Key of my user from Electrum wallet or whatever with a format of (xpub#########################/vpub#########################) or in my case since its on testnet it uses tpub######################### format. However, it returns an address with a format of bc#########, this means that its passing on mainnet network wherein it should be on testnet network.
Problem #2
On lower part of my code, I'm using $fkey = $serializer->parse($btc, $key); and $child_key = $fkey->derivePath($path) wherein $path = '0/' $index. $index here are just random numbers. It can be 0/1 or 0/99 or whatever 0/random.
Problem here is that somehow related to Problem #1, after it generates the wrong address, when I try to use this address for transaction my rpc returns an invalid address Error. As you can see as well I have a commented code $account0Key = $child_key->derivePath("84'/0'/0'"); wherein i got an error that it needs a private key instead of a public one. Now, my concern is that I do not want the users of the system i'm making to put their private keys whatsoever as it will might just compromise their wallets.
Basically, What I want to achieve using with this library from BitWasp is when a user put in their master public key from their wallet, my system would be able to then generate an address to be used for a btc transaction. Please help.
Passing the network inside the getAddress() method works
return $child_key->getAddress(new AddressCreator())->getAddress($btc);
Related
I am trying to do a simple operation: create 2 entries; on each creation, first check if the entity exists, create it, if it does not, and then do the adjustment. In some cases (on first such operation) we need to create the entity in the first entry and work with it in the second. Unfortunately, this does not happen and we end up with two entries that are useless. After this initial issue, everything works as expected (i.e. on next iteration the entity is properly found).
Here is the code for the entries:
// Create first entry
$debitCode = 'bank';
$creditCode = 'equity';
// Create entry
$accountEntry = new AccountEntry();
$accountEntry->setAmount($amount);
$debitAccount = $unit->getAccountByType($debitCode);
if (!$debitAccount) {
// Create debit account
$debitAccountType = $em->getRepository('App:AccountType')->findOneBy(['code' => $debitCode]);
$debitAccount = new Account();
$debitAccount->setType($debitAccountType);
$em->persist($debitAccount);
}
$debitAccount->debit($amount);
$accountEntry->setDebitAccount($debitAccount);
$creditAccount = $unit->getAccountByType($creditCode);
if (!$creditAccount) {
// Create credit account
$creditAccountType = $em->getRepository('App:AccountType')->findOneBy(['code' => $creditCode]);
$creditAccount = new Account();
$creditAccount->setType($creditAccountType);
$em->persist($creditAccount);
}
$creditAccount->credit($amount);
$accountEntry->setCreditAccount($creditAccount);
$em->persist($accountEntry);
$em->flush();
// Create second entry
$debitCode2 = 'accountsPayable';
$creditCode2 = 'bank';
$accountEntry2 = new AccountEntry();
$accountEntry2->setAmount($amount);
$debitAccount = $unit->getAccountByType($debitCode2);
if (!$debitAccount) {
// Create debit account
$debitAccountType = $em->getRepository('App:AccountType')->findOneBy(['code' => $debitCode2]);
$debitAccount = new Account();
$debitAccount->setUnit($unit);
$debitAccount->setType($debitAccountType);
$em->persist($debitAccount);
}
$debitAccount->debit($amount);
$accountEntry2->setDebitAccount($debitAccount);
$creditAccount = $unit->getAccountByType($creditCode2);
if (!$creditAccount) {
// Create credit account
$creditAccountType = $em->getRepository('App:AccountType')->findOneBy(['code' => $creditCode2]);
$creditAccount = new Account();
$creditAccount->setUnit($unit);
$creditAccount->setType($creditAccountType);
$em->persist($creditAccount);
}
$creditAccount->credit($amount);
$accountEntry2->setCreditAccount($creditAccount);
$em->persist($accountEntry2);
$em->flush;
And here is the getAccountByType function:
/**
* Get Account by type of account.
*/
public function getAccountByType($code)
{
$filter = function ($account) use ($code) {
if ($account->getType()->getCode() == $code) {
return $account;
}
};
$accounts = $this->accounts->filter($filter)->getValues();
return isset($accounts[0]) ? $accounts[0] : null;
}
And, of course, 30 minutes after I posted the question, I found the answer myself (despite having been banging my head against the wall for a couple of days before posting).
Basically, we need to refresh the $unit entity after persisting/flushing the initial entry:
$em->refresh($unit);
Otherwise, the getAccountByType method apparently does not take into account the changes. So, it appears that entity methods do not take into account flushed changes to the database, if the entity is not refreshed. Probably basic stuff, but I did not know that. I hope this will save someone lots of trouble.
I am currently working with the Amazon MWS to integrate some features into wordpress via a plugin. I am using the client libraries provided by amazon found here:
https://developer.amazonservices.com/api.html?group=bde§ion=reports&version=latest
Using these client libraries and the sample php files included I have set up my plugin to make two API calls. The first is requestReport
public function requestInventoryReport() {
AWI_Amazon_Config::defineCredentials(); // Defines data for API Call
$serviceUrl = "https://mws.amazonservices.com";
$config = array (
'ServiceURL' => $serviceUrl,
'ProxyHost' => null,
'ProxyPort' => -1,
'MaxErrorRetry' => 3,
);
$service = new MarketplaceWebService_Client(
AWS_ACCESS_KEY_ID,
AWS_SECRET_ACCESS_KEY,
$config,
APPLICATION_NAME,
APPLICATION_VERSION);
$request = new MarketplaceWebService_Model_RequestReportRequest();
$request->setMerchant(MERCHANT_ID);
$request->setReportType('_GET_MERCHANT_LISTINGS_DATA_');
self::invokeRequestReport($service, $request);
}
private function invokeRequestReport(MarketplaceWebService_Interface $service, $request) {
try {
$response = $service->requestReport($request);
if ($response->isSetRequestReportResult()) {
// Print Out Data
}
} catch (MarketplaceWebService_Exception $ex) {
// Print Out Error
}
}
and the second is getReportRequestList which has code similar to the first function. I am able to run these functions without any errors. The issue that I am having is that $response->isSetRequestReportResult() returns false. From my understanding and looking into the response object, this would suggest that the response object does not have the result. (Upon printing out the response object I can see that the FieldValue of the result array is NULL.) The call, however, does not throw an error but neither does it have the result.
I did some digging through the code and found that the result does actually get returned from the api call but never gets set to the return object when the library attempts to parse it from XML. I've tracked the error down to this block of code (This code is untouched by me and directly from the amazon mws reports library).
private function fromDOMElement(DOMElement $dom)
{
$xpath = new DOMXPath($dom->ownerDocument);
$xpath->registerNamespace('a', 'http://mws.amazonaws.com/doc/2009-01-01/');
foreach ($this->fields as $fieldName => $field) {
$fieldType = $field['FieldType'];
if (is_array($fieldType)) {
if ($this->isComplexType($fieldType[0])) {
// Handle Data
} else {
// Handle Data
}
} else {
if ($this->isComplexType($fieldType)) {
// Handle Data
} else {
$element = $xpath->query("./a:$fieldName/text()", $dom);
$data = null;
if ($element->length == 1) {
switch($this->fields[$fieldName]['FieldType']) {
case 'DateTime':
$data = new DateTime($element->item(0)->data,
new DateTimeZone('UTC'));
break;
case 'bool':
$value = $element->item(0)->data;
$data = $value === 'true' ? true : false;
break;
default:
$data = $element->item(0)->data;
break;
}
$this->fields[$fieldName]['FieldValue'] = $data;
}
}
}
}
}
The data that should go into the RequestReportResult exists at the beginning of this function as a node in the dom element. The flow of logic takes it into the last else statement inside the foreach. The code runs its query and returns $element however $element->length = 13 in my case which causes it to fail the if statement and never set the data to the object. I have also looked into $element->item(0) to see what was in it and it appears to be a dom object itself matching the original dom object but with a bunch of empty strings.
Now, I'm new to working with the MWS and my gut feeling is that I am missing a parameter somewhere in my api call that is messing up how the data is returned and is causing this weird error, but I'm out of ideas at this point. If anyone has any ideas or could point me in the right direction, I would greatly appreciate it.
Thanks for your time!
** Also as a side note, Amazon Scratchpad does return everything properly using the same parameters that I am using in my code **
These works for me, check if you are missing anything.
For RequestReportRequest i am doing this:
$request = new MarketplaceWebService_Model_RequestReportRequest();
$marketplaceIdArray = array("Id" => array($pos_data['marketplace_id']));
$request->setMarketplaceIdList($marketplaceIdArray);
$request->setMerchant($pos_data['merchant_id']);
$request->setReportType($this->report_type);
For GetReportRequestList i am doing this:
$service = new MarketplaceWebService_Client($pos_data['aws_access_key'], $pos_data['aws_secret_access_key'], $pos_data['config'], $pos_data['application_name'], $pos_data['application_version']);
$report_request = new MarketplaceWebService_Model_GetReportRequestListRequest();
$report_request->setMerchant($pos_data["merchant_id"]);
$report_type_request = new MarketplaceWebService_Model_TypeList();
$report_type_request->setType($this->report_type);
$report_request->setReportTypeList($report_type_request);
$report_request_status = $this->invokeGetReportRequestList($service, $report_request, $report_requestID);
i am trying to insert new entity using PHP client library into datastore, i am using datastore_connect.php file from this example, https://github.com/amygdala/appengine_php_datastore_example
I want to insert entity with auto id, not the name. I see that there is function setId(), but i dont know how to generate proper id. Whats the best practice in doing so?
Thanks
function createKeyForTestItem () {
$path = new Google_Service_Datastore_KeyPathElement();
$path->setKind("testkind");
$path->setName("testkeyname");
//$path->setId(??)
$key = new Google_Service_Datastore_Key();
$key->setPath([$path]);
return $key;
}
You can have Cloud Datastore generate the ID for you by populating the insertAutoId field on the mutation instead of the upsert field.
Here's a code snippet (adapted from the datastore_connect.php file you posted):
function create_key() {
$path = new Google_Service_Datastore_KeyPathElement();
$path->setKind("testkind");
// Neither name nor ID is set.
$key = new Google_Service_Datastore_Key();
$key->setPath([$path]);
return $key;
}
function create_entity() {
$entity = new Google_Service_Datastore_Entity();
$entity->setKey(create_key());
// Add properties...
return $entity;
}
function create_commit_request() {
$entity = create_entity();
$mutation = new Google_Service_Datastore_Mutation();
$mutation->setInsertAutoId([$entity]); // Causes ID to be allocated.
$req = new Google_Service_Datastore_CommitRequest();
$req->setMode('NON_TRANSACTIONAL');
$req->setMutation($mutation);
return $req;
}
If you're looking for a PHP library to take away most of the headache of Cloud Datastore, you could try my new library, which sits on top of the official google-api-php-client:
https://github.com/tomwalder/php-gds
And here's a sample code snippet to create an Entity with an auto-generated ID
$obj_book = new GDS\Entity();
$obj_book->title = 'Romeo and Juliet';
$obj_book->author = 'William Shakespeare';
$obj_book->isbn = '1840224339';
// Write it to Datastore
$obj_book_store->upsert($obj_book);
More code snippets and documentation on GitHub.
I have a website that contains a form that makes various SOAP requests at certain points. One of these requests gets a list of induction times returned and displays them to the user in order for them to pick one.
I am getting results returned fine from the SOAP service but unfortunately it seems to be not showing information correctly and even not displaying returned object keys at all.
I have liased with one of the devs at the SOAP end and he says the service is fine and spitting out the cirrect information. He has provided a screentshot:
Here is my code to pull call the method I need for this information:
public function getInductionTimes($options) {
$client = $this->createSoapRequest();
$inductionTimes = $client->FITinductionlist($options);
//die(print_r($inductionTimes));
return $inductionTimes;
}
private function createSoapRequest() {
$url = 'https://fitspace.m-cloudapps.com:444/FITSPACE/MHservice.asmx?WSDL';
$options["connection_timeout"] = 25;
$options["location"] = $url;
$options['trace'] = 1;
$options['style'] = SOAP_RPC;
$options['use'] = SOAP_ENCODED;
$client = new SoapClient($url, $options);
//die(print_R($client->__getFunctions()));
return $client;
}
As you can see I print_r the code right after I have received it to check what I am getting returned and it is this:
As you can see this IDdtstring field is getting completely ignored.
Does anyone have any ideas as to why this may be happening? Is it something to do with encoding? I can't seem to get anywhere on this issue!
Thanks
I was able to retrieve the fields correctly, including IDdtstring, using your basic code. Perhaps you are not sending the parameters correctly?
function getInductionTimes($options) {
$client = createSoapRequest();
$inductionTimes = $client->FITinductionlist($options);
die(print_r($inductionTimes));
return $inductionTimes;
}
function createSoapRequest() {
$url = 'https://fitspace.m-cloudapps.com:444/FITSPACE/MHservice.asmx?WSDL';
$options["connection_timeout"] = 25;
$options["location"] = $url;
$options['trace'] = 1;
$options['style'] = SOAP_RPC;
$options['use'] = SOAP_ENCODED;
$client = new SoapClient($url, $options);
//die(print_R($client->__getFunctions()));
return $client;
}
getInductionTimes(array("IDDate" => "2013-06-28T13:00:00+01:00", "GYMNAME" => "Bournemouth"));
I managed to solve this issue by adding the line of code into my SOAP options array which I then presume was an issue with my WSDL being cached in PHP:
$options['cache_wsdl'] = WSDL_CACHE_NONE;
I would like to store sensitive user information in an object which would be saved as a file on the server (rather than in a database).
The user's password or other key would be used to generate an encryption key.
The data object would be loaded from the server whenever the user logs in and provides the correct key, it would be then stored in the Session. All of this would happen other SSL.
I am not familiar with serialization but I would imagine it would work something like this.
function loadData($id, $key)
{
//open file from storage
$fh = fopen("data/" . $id);
$obj = fh->read //not sure what the read function would be....
$obj = decrypt($obj, $key) // some sort of decryption function using openssl_decrpt
$obj = unserialize($obj
if ($obj != null) //if successful...
{
session_start();
$_SESSION['data'] = $obj;
return true;
}
return false;
}
function saveData($id, $key)
{
//open file from storage
$fh = fopen("data/" . $id);
$obj = serialize($_SESSION(["data"]);
$obj = encrypt($obj, $key);
$obj = serialize($obj
if ($obj != null) //if successful...
{
fh->write($obj) //not sure what the write function would be....
return true;
}
return false;
}
Also, would this be this method be secure?
The weak point is your server. If someone has access to your server, he/she can:
Run a dictionary attack on the encrypted object (which can be very effective if the key is a short password).
Attach to your server process during request handling and get the decrypted object (or the key) from memory.
To mitigate the first problem you should use salt, but there is really not a lot you can do about the second problem- just make sure your server is not compromised...
(Note that running a dictionary attack is much simpler than reverse engineering a process and requires fewer permissions. So, depending on your use-case, it may be reasonable to ignore the second problem)