NAME

       CURLOPT_SSH_HOSTKEYDATA - pointer to pass to the SSH host key callback

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_HOSTKEYDATA, void *pointer);

DESCRIPTION

       Pass a void * as parameter. This pointer will be passed along verbatim to the callback set
       with CURLOPT_SSH_HOSTKEYFUNCTION(3).

DEFAULT

       NULL

PROTOCOLS

       SCP and SFTP

EXAMPLE

       int hostkeycb(void *clientp,    /* passed with CURLOPT_SSH_HOSTKEYDATA */
                     int keytype,      /* CURLKHTYPE */
                     const char * key, /* host key to check */
                     size_t keylen);   /* length of the key */
       {
         /* 'clientp' points to the callback_data struct */
         /* investigate the situation and return the correct value */
         return CURLKHMATCH_OK;
       }
       {
         curl_easy_setopt(curl, CURLOPT_URL, "sftp://example.com/thisfile.txt");
         curl_easy_setopt(curl, CURLOPT_SSH_HOSTKEYFUNCTION, hostkeycb);
         curl_easy_setopt(curl, CURLOPT_SSH_HOSTKEYDATA, &callback_data);

         curl_easy_perform(curl);
       }

AVAILABILITY

       Added in 7.84.0, works only with libssh2 backend.

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_SSH_HOSTKEYFUNCTION(3),