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CURLINFO_SSL_ENGINES(3)             libcurl            CURLINFO_SSL_ENGINES(3)


NAME

       CURLINFO_SSL_ENGINES - 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 will not free the data for you.


PROTOCOLS

       All TLS based ones.


EXAMPLE

       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

       curl_easy_getinfo(3), curl_easy_setopt(3),

ibcurl 8.1.2                    April 26, 2023         CURLINFO_SSL_ENGINES(3)

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