CURLOPT_SSH_KEYDATA explained
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.
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
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
See also
CURLOPT_SSH_KEYDATA(3), CURLOPT_SSH_KNOWNHOSTS(3)
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