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CURLOPT_CAPATH(3)	   Library Functions Manual	     CURLOPT_CAPATH(3)

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	combi-
       nation 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), CUR-
       LOPT_STDERR(3)

libcurl				  2025-06-03		     CURLOPT_CAPATH(3)

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