CURLOPT_SSH_KEYDATA - pointer passed to the SSH key callback
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_KEYDATA, void *pointer);
CURLOPT_SSH_KEYDATA(3)     curl_easy_setopt options     CURLOPT_SSH_KEYDATA(3)
NAME
       CURLOPT_SSH_KEYDATA - pointer passed to the SSH key callback
SYNOPSIS
       #include <curl/curl.h>
       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_KEYDATA, void *pointer);
DESCRIPTION
       Pass  a void * as parameter. This pointer will be passed along verbatim
       to the callback set with CURLOPT_SSH_KEYFUNCTION(3).
DEFAULT
       NULL
PROTOCOLS
       SFTP and SCP
EXAMPLE
       static int keycb(CURL *easy,
                        const struct curl_khkey *knownkey,
                        const struct curl_khkey *foundkey,
                        enum curl_khmatch,
                        void *clientp)
       {
         /* 'clientp' points to the callback_data struct */
         /* investigate the situation and return the correct value */
         return CURLKHSTAT_FINE_ADD_TO_FILE;
       }
       {
         curl_easy_setopt(curl, CURLOPT_URL, "sftp://example.com/thisfile.txt");
         curl_easy_setopt(curl, CURLOPT_SSH_KEYFUNCTION, keycb);
         curl_easy_setopt(curl, CURLOPT_SSH_KEYDATA, &callback_data);
         curl_easy_setopt(curl, CURLOPT_SSH_KNOWNHOSTS, "/home/user/known_hosts");
         curl_easy_perform(curl);
       }
AVAILABILITY
       Added in 7.19.6
RETURN VALUE
       Returns CURLE_OK if the option is supported,  and  CURLE_UNKNOWN_OPTION
       if not.
ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:
       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | web/curl         |
       +---------------+------------------+
       |Stability      | Uncommitted      |
       +---------------+------------------+
SEE ALSO
       CURLOPT_SSH_KEYDATA(3), CURLOPT_SSH_KNOWNHOSTS(3),
NOTES
       Source  code  for open source software components in Oracle Solaris can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-
       code-downloads.html.
       This     software     was    built    from    source    available    at
       https://github.com/oracle/solaris-userland.   The  original   community
       source       was       downloaded      from       https://curl.se/down-
       load/curl-7.83.1.tar.bz2.
       Further information about this software can be found on the open source
       community website at http://curl.haxx.se/.
libcurl 7.83.1                 November 26, 2021        CURLOPT_SSH_KEYDATA(3)