CURLOPT_SSH_KEYDATA

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),