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CURLOPT_SSH_KEYDATA(3) curl_easy_setopt options CURLOPT_SSH_KEYDATA(3)

NAME

CURLOPT_SSH_HOSTKEYDATA - pointer to pass to the SSH hostkey 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, /*hostkey 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),

June 13, 2022 libcurl 7.84.0