Js error

[pippuccio76]

Hi , i use your code , js and php...

PHP example have an error:

this: [CODE] $payload = [ 'algorithm' => $challenge['algorithm'], 'challenge' => $challenge['challenge'], 'number' => 12345, // Example number 'salt' => $challenge['salt'], 'signature' => $challenge['signature'], ];

[/CODE]

must change to :

[CODE] $payload = [ 'algorithm' => $challenge->algorithm, 'challenge' => $challenge->challenge, 'number' => 43267, // Example number 'salt' => $challenge->salt, 'signature' => $challenge->signature, ];

[/CODE]

because return an object instead of array.

Now i have this error :

altcha.js:1186 ALTCHA [name=altcha] SyntaxError: Unexpected token '<', " <script i"... is not valid JSON

How can i solve it ?

[ovx]

Hi, thanks for reporting, I'll fix the example.

Looks like the server doesn't return a valid JSON response. Check if the challengeurl is correct and inspect the server response - it must return only the JSON-encoded challenge and nothing else, also include content-type: application/json header.

[pippuccio76]

your php example doesn't return Json .... Now i return json:

$challenge = Altcha::createChallenge($options);

log_message('debug', "Challenge created: " . json_encode($challenge) );

log_message('debug', "Tipo variabile : " . gettype($challenge) );

return json_encode($challenge) ;

json seem ok :

DEBUG - 2024-09-12 19:11:07 --> Challenge created: {"algorithm":"SHA-256","challenge":"fe6295348cd9cf98e8c5e6b3d65b3af5f714cfcc72544b4fdb9b2ba223174e57","maxnumber":50000,"salt":"b6be1c392202dc0e69e34166","signature":"197f28fb07e03942dc049cebd19ca23c1fd082ae38215e3a34be58f506112018"}

ALTCHA [name=altcha] SyntaxError: Unexpected non-whitespace character after JSON at position 234 (line 2 column 1)

[ovx]

The library altcha-lib-php is just a library, not a server and thus it does not encode any data. For more comprehensive example, please refer to the altcha-starter-php repository, which includes a complete http server with encoding.

Make sure the response contains only the JSON-encoded challenge and nothing else.