NAME

       CURLOPT_CAPATH - directory holding CA certificates

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CAPATH, char *capath);

DESCRIPTION

       Pass  a  char * to a null-terminated string naming a directory holding multiple CA certificates to verify
       the peer with. If libcurl is built against OpenSSL, the certificate directory must be prepared using  the
       OpenSSL   c_rehash   utility.    This   makes   sense   only   when   used   in   combination   with  the
       CURLOPT_SSL_VERIFYPEER(3) option.

       The CURLOPT_CAPATH(3) function apparently does not work in Windows due to some limitation in OpenSSL.

       The application does not have to keep the string around after setting this option.

       The default value for this can be figured out with CURLINFO_CAPATH(3).

DEFAULT

       A default path detected at build time.

PROTOCOLS

       All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
           curl_easy_setopt(curl, CURLOPT_CAPATH, "/etc/cert-dir");
           res = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       This option is supported by the OpenSSL, GnuTLS and mbedTLS (since 7.56.0) backends.

RETURN VALUE

       CURLE_OK if supported; or an error such as:

       CURLE_NOT_BUILT_IN - Not supported by the SSL backend

       CURLE_UNKNOWN_OPTION

       CURLE_OUT_OF_MEMORY

SEE ALSO

       CURLINFO_CAPATH(3), CURLOPT_CAINFO(3), CURLOPT_DEBUGFUNCTION(3), CURLOPT_STDERR(3)