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  pointer  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.

       Using this option multiple times makes the last set string override the previous ones. Set
       it to NULL to disable its use again.

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

DEFAULT

       A path detected at build time.

PROTOCOLS

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

       This option works only with the following  TLS  backends:  GnuTLS,  OpenSSL,  mbedTLS  and
       wolfSSL

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

       Added in curl 7.9.8

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)