How to declare CURL body for CoinBase API call in php

Question

I want use php curl to interact with coinbase api. Simple API calls that does not require data to be passed are successful. What I want to do is create address.
CLI curl works. The command line curl command sample is below:

curl https://api.coinbase.com/v2/accounts/82de7fcd-db72-5085-8ceb-bee19303080b/addresses \ -X POST \ -H 'Content-Type: application/json' \ -H 'Authorization: Bearer abd90df5f27a7b170cd775abf89d632b350b7c1c9d53e08b340cd9832ce52c2c' \ -d '{"name": "New receive address"}' }

My php code excerpt

$apiurl = "https://api.coinbase.com";
$secret = "coinbase api secret";
$method = "POST";
$requestPath = "/v2/accounts/actualAccountID/addresses";
$body = "";
$url = $apiurl.$requestPath;
$data["name"] = "curl smj6 ary";
$body=json_encode($data);

$string = $timestamp.$method.$requestPath.$body;
$sig = hash_hmac('sha256', $string, $secret);
$ch = curl_init();
// Disable SSL verification
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
// Will return the response, if false it print the response
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
// Set the url
curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_VERBOSE, true);

if($method == "POST"){

curl_setopt($ch, CURLOPT_POST, TRUE);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
}

$headers = [
    "CB-ACCESS-KEY: xxx",
    "CB-ACCESS-SIGN:$sig",
    "CB-ACCESS-TIMESTAMP: $timestamp",
    "CB-VERSION: 2018-03-21",
    "accept: application/json;charset=utf-8"
];

curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

// Execute
$result_json = curl_exec($ch);

It returns

{"errors":[{"id":"authentication_error","message":"invalid signature"}]}

Since it works with listing user. I guess th error occurs the way iam passing post data to curl.

Similar Questions that I found on SO but none solves my issue. Please help!

UPDATE:

$apiurl = "https://api.coinbase.com/v2/";
$requestPath = "accounts/$accountid/addresses";

returns same error

IcedAnt · Answer 1 · 2018-03-22T09:38:45.830

0

There are sites that convert the command line cURL syntax to PHP, like https://incarnate.github.io/curl-to-php/

I just pasted your command and:

// Generated by curl-to-PHP: http://incarnate.github.io/curl-to-php/
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://api.coinbase.com/v2/accounts/82de7fcd-db72-5085-8ceb-bee19303080b/addresses");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "{\"name\": \"New receive address\"}");
curl_setopt($ch, CURLOPT_POST, 1);

$headers = array();
$headers[] = "Content-Type: application/json";
$headers[] = "Authorization: Bearer abd90df5f27a7b170cd775abf89d632b350b7c1c9d53e08b340cd9832ce52c2c";
$headers[] = "CB-ACCESS-KEY: <your api key>";
$headers[] = "CB-ACCESS-SIGN: <the user generated message signature>";
$headers[] = "CB-ACCESS-TIMESTAMP: <a timestamp for your request>";
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result = curl_exec($ch);
if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close ($ch);

edited Mar 22 '18 at 09:38

answered Mar 22 '18 at 08:27

IcedAnt

444
3
12

@SMJ Answer updated. Basically for each header, add a new line. – IcedAnt Mar 22 '18 at 09:39
I updated my code in question. Can you please review that? If $body="" i do get an address. but then i cannot pass label to the address iam creating. – SMJ Mar 22 '18 at 09:57
`$requestPath` is wrong. It should be the actual `account_id` like `/v2/accounts/82de7fcd-db72-5085-8ceb-bee19303080b/addresses`. – IcedAnt Mar 22 '18 at 11:05
actually i pass my account id in original code. just hide that for SO – SMJ Mar 22 '18 at 11:06
Try it like this: `$apiurl = "https://api.coinbase.com/v2/";` `$requestPath = "accounts/actualAccountID/addresses";` – IcedAnt Mar 22 '18 at 11:21
still same error. It works on command line as I can pass curl -data How can I do that in php ? – SMJ Mar 22 '18 at 11:29
You're already doing it in your code `curl_setopt($ch, CURLOPT_POSTFIELDS, $body);` – IcedAnt Mar 22 '18 at 11:30
Let us [continue this discussion in chat](https://chat.stackoverflow.com/rooms/167335/discussion-between-smj-and-icedant). – SMJ Mar 22 '18 at 11:34

How to declare CURL body for CoinBase API call in php

1 Answers1