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.TH CURLOPT_CAPATH 3 "May 14, 2021" "libcurl 7.78.0" "curl_easy_setopt options"

.SH NAME
CURLOPT_CAPATH \- specify directory holding CA certificates
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CAPATH, char *capath);
.SH 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
\fICURLOPT_SSL_VERIFYPEER(3)\fP option.

The \fICURLOPT_CAPATH(3)\fP 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.
.SH DEFAULT
A default path detected at build time.
.SH PROTOCOLS
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
.SH EXAMPLE
.nf
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);
}
.fi
.SH 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.
.SH 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
.SH "SEE ALSO"
.BR CURLOPT_CAINFO "(3), "
.BR CURLOPT_STDERR "(3), " CURLOPT_DEBUGFUNCTION "(3), "