PHP AdobeSign API :: transientDocuments with OAuth2.0 - php

Question

I am using PHP OAuth2.0 Adobesign API for sending pdf to user for e-signature purpose.
I successfully generate auth token and refresh token by following basic OAuth2 steps.
Now I am facing issue while trying to send pdf transientDocuments using curl code. Below is my sample code:
define("CALLBACK_URL", "https://www.getdadstrong.com/vipin/test.php");
define("AUTH_URL", "https://api.in1.echosign.com/api/rest/v6/transientDocuments");
define("ACCESS_TOKEN_URL", "http://api.in1.echosign.com/oauth/token");
define("CLIENT_ID", "MY_CLIENT_ID");
define("CLIENT_SECRET", "MY_CLIENT_SECRET");
define("SCOPE", "agreement_send:account"); // optional
function getToken(){
$curlFILE = curl_init();
$params = array(
CURLOPT_URL => AUTH_URL,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_NOBODY => false,
CURLOPT_HTTPHEADER => array(
"Authorization: Bearer MY_SECURE_TOKEN",
"cache-control: no-cache",
"content-type: multipart/form-data",
"Content-Disposition: form-data; name='file'; filename='MyPDF.pdf'",
),
CURLOPT_POSTFIELDS => array (
// 'filename' => new CURLFile('./MyPDF.pdf')
'filename' => new CURLFile('./MyPDF.pdf','application/pdf','MyFile')
),
CURLOPT_SSL_VERIFYPEER => FALSE,
CURLOPT_SSL_VERIFYHOST => FALSE
);
curl_setopt_array($curlFILE, $params);
$response = curl_exec($curlFILE);
curl_close($curlFILE);
$err = curl_error($curlFILE);
if ($err) {
echo "<br/> cURL Error #01: " . $err;
}
echo '<pre>';
var_dump($err);
var_dump($response);
echo '<pre>';
}
getToken();
Output:
{
"code": "NO_FILE_CONTENT",
"message": "Must provide file body"
}

Answer 1

Finally I come to know Adobe Esign with V6 having some issue with this method. So I switch to V5 and make some little modification in my code. It is working for me.
<?php
define("AUTH_URL", "https://api.na2.echosign.com/api/rest/v5/transientDocuments");
$url = AUTH_URL;
$header =array(
"Authorization: Bearer 3AAAB6hBTt666543359kgBzroaNxqyezwBRdsdsdssssssssss6767gGy7CNdERHxqz1r5lOzmyxI7hfQ22zsyCDvnG_HRc8m9B7UBRJuGy",
"cache-control: no-cache",
"content-type: multipart/form-data",
"Content-Disposition: form-data; name='File'; filename='MyPDF.pdf'",
);
$filePath= '#'.file_get_contents('MyPDF.pdf');
$fields = array('File' => $filePath,'Mime-Type' => 'application/pdf', 'File-Name' => 'MyPDF.pdf');
$resource = curl_init();
curl_setopt_array($resource, array(
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => $fields,
CURLOPT_HTTPHEADER => $header
));
$res = curl_exec($resource);
$result = json_decode($res,true);
echo "<pre>";
print_r($result);
echo "</pre>";
curl_close($resource);
?>
Output:
Array
(
[transientDocumentId] => 3AA777777777777gwxctQX8kTYj2e3Esgc5_HbvKgKK_oaIccNqr2JwWJK8bUXn779OMvyFMJG2VONbbbMqO-bo_GoKJP-wfYszcQtg7tbJ8sc8YxTwQPm3kV77777ThgQy5ZoeHb_km-zmitgdSkf7sLYp0vCO8CAbvYQVzd3OpU6zJ-Mv54VoVKvsYUFsfhfhgK]epKpCHnvKWvn37fghfg777876rV2QYyh9bkApotXvSzxndXNQbUTmAcpP1Jq-WlXsVdGleKjHoEMoDgfhfghIOYQFxy5eeOtctqwtxC9MUWjioGV6FW6ZtoGm0ijqGU*
)

Answer 2

I had a little play in some free time and the following seemed to work on my test system. The function targets a very simple php endpoint rather than a remote url/api endpoint.
$file=sprintf('%s%slamb_vindaloo.pdf', __DIR__, DIRECTORY_SEPARATOR );
define( 'BEARER_TOKEN', '74e793ea86b6e06d5d971454a955c48012a422d7694d3463c23f69ef758f62db' );
define( 'AUTH_URL', 'https://sentinel/demo/stack/pdf-receiver.php' );
define( 'CA_CERTIFICATE', 'c:/wwwroot/cacert.pem' );
function getToken( $file=false ){
if( !$file )return;
$curl = curl_init();
$params = array(
CURLOPT_URL => AUTH_URL,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_POST => true,
CURLOPT_NOBODY => false,
CURLOPT_HTTPHEADER => array(
sprintf( "Authorization: Bearer %s", BEARER_TOKEN ),
"Cache-Control: no-cache",
"Content-Type: application/octet-stream", # <----- set the content-type
sprintf("Content-Disposition: form-data; name='file'; filename='%s'", $file ),
),
CURLOPT_POSTFIELDS => array (
'filename' => new CURLFile( $file, mime_content_type( $file ), pathinfo( $file, PATHINFO_FILENAME ) )
),
CURLOPT_CAINFO => CA_CERTIFICATE, # <------ if the endpoint is SSL it is advisable to use a valid cacert.pem file!!
CURLOPT_SSL_VERIFYPEER => false, # <------ if possible set this to true
CURLOPT_SSL_VERIFYHOST => 2 # <------ true/false are not options for this
);
curl_setopt_array( $curl, $params );
/*
Return an object with the various return values
rather than doing any printing from within the
function
*/
$res=(object)array(
'response' => curl_exec( $curl ),
'info' => (object)curl_getinfo( $curl ),
'errors' => curl_error( $curl )
);
curl_close( $curl );
return $res;
}
/* call the function */
$results=getToken( $file );
/* process the response accordingly */
if( $results->info->http_code==200 ){
printf('<pre>%s</pre>', $results->response );
}
The simple PHP endpoint is:
<?php
#
# PDF File Receiver for curlFile Tests....
#
$data=file_get_contents( 'php://input' );
echo base64_encode( $data );
?>
The response, to highlight success was as follows:
LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS02NGQ5ZGYyYTE3ZmE1MGNkDQpDb250ZW50LURpc3Bvc...etc etc