Provided by: libcurl4-doc_7.81.0-1ubuntu1.20_all 

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.
DEFAULT
A default path detected at build time.
PROTOCOLS
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
EXAMPLE
CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); curl_easy_setopt(curl, CURLOPT_CAPATH, "/etc/cert-dir"); ret = curl_easy_perform(curl); curl_easy_cleanup(curl); }
AVAILABILITY
This option is supported by the OpenSSL, GnuTLS and mbedTLS (since 7.56.0) backends. The NSS backend provides the option only for backward compatibility.
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
CURLOPT_CAINFO(3), CURLOPT_STDERR(3), CURLOPT_DEBUGFUNCTION(3),