Manpages - CURLOPT_SSH_KEYDATA.3

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);

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

NULL

SFTP and SCP

  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);
  }

Added in 7.19.6

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

*CURLOPT_SSH_KEYDATA*(3), *CURLOPT_SSH_KNOWNHOSTS*(3),