CURLINFO_SSL_ENGINES - Man Page

get an slist of OpenSSL crypto-engines

Synopsis

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_SSL_ENGINES,
                           struct curl_slist **engine_list);

Description

Pass the address of a 'struct curl_slist *' to receive a linked-list of OpenSSL crypto-engines supported. Note that engines are normally implemented in separate dynamic libraries. Hence not all the returned engines may be available at runtime. NOTE: you must call curl_slist_free_all(3) on the list pointer once you are done with it, as libcurl does not free this data for you.

Protocols

All TLS based ones.

Example

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    struct curl_slist *engines;
    res = curl_easy_getinfo(curl, CURLINFO_SSL_ENGINES, &engines);
    if((res == CURLE_OK) && engines) {
      /* we have a list, free it when done using it */
      curl_slist_free_all(engines);
    }

    curl_easy_cleanup(curl);
  }
}

Availability

Added in 7.12.3. Available in OpenSSL builds with "engine" support.

Return Value

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

See Also

CURLOPT_SSLENGINE(3), curl_easy_getinfo(3), curl_easy_setopt(3)

Referenced By

curl_easy_getinfo(3), CURLOPT_SSLENGINE(3).

February 12 2024 libcurl