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CURLINFO_SSL_ENGINES

Section: C Library Functions (3)
Updated: 202-0-19
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NAME

CURLINFO_SSL_ENGINES - 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 aqstruct curl_slist *aq 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

This functionality affects all TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

This option works only with the following TLS backends: OpenSSL

EXAMPLE

int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode result;
    struct curl_slist *engines;
    result = curl_easy_getinfo(curl, CURLINFO_SSL_ENGINES, &engines);
    if((result == 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 curl 7.12.3

RETURN VALUE

curl_easy_getinfo(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).