plucky (3) CURLOPT_SSH_KEYDATA.3.gz

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  is  passed  along  verbatim  to  the  callback  set with
       CURLOPT_SSH_KEYFUNCTION(3).

DEFAULT

       NULL

PROTOCOLS

       This functionality affects scp and sftp

EXAMPLE

       struct mine {
         void *custom;
       };
       static int keycb(CURL *easy,
                        const struct curl_khkey *knownkey,
                        const struct curl_khkey *foundkey,
                        enum curl_khmatch match,
                        void *clientp)
       {
         /* 'clientp' points to the callback_data struct */
         /* investigate the situation and return the correct value */
         return CURLKHSTAT_FINE_ADD_TO_FILE;
       }

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           struct mine callback_data;
           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 curl 7.19.6

RETURN VALUE

       curl_easy_setopt(3) returns a CURLcode indicating success or error.

       CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

SEE ALSO

       CURLOPT_SSH_KEYDATA(3), CURLOPT_SSH_KNOWNHOSTS(3)