x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
CURLOPT_CAINFO(3) libcurl CURLOPT_CAINFO(3)
NAME
CURLOPT_CAINFO - path to Certificate Authority (CA) bundle
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CAINFO, char *path);
DESCRIPTION
Pass a char * to a null-terminated string naming a file holding one or
more certificates to verify the peer with.
If CURLOPT_SSL_VERIFYPEER(3) is zero and you avoid verifying the
server's certificate, CURLOPT_CAINFO(3) need not even indicate an
accessible file.
This option is by default set to the system path where libcurl's CA
certificate bundle is assumed to be stored, as established at build
time.
(iOS and macOS) When curl uses Secure Transport this option is sup-
ported. If the option is not set, then curl uses the certificates in
the system and user Keychain to verify the peer.
(Schannel) This option is supported for Schannel in Windows 7 or later
but we recommend not using it until Windows 8 since it works better
starting then. If the option is not set, then curl uses the certifi-
cates in the Windows' store of root certificates (the default for
Schannel).
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_CAINFO(3).
DEFAULT
Built-in system specific. When curl is built with Secure Transport or
Schannel, this option is not set by default.
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_CAINFO, "/etc/certs/cabundle.pem");
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
AVAILABILITY
For the SSL engines that do not support certificate files the CUR-
LOPT_CAINFO(3) option is ignored. Schannel support added in libcurl
7.60.
RETURN VALUE
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if
not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.
SEE ALSO
CURLINFO_CAINFO(3), CURLOPT_CA_CACHE_TIMEOUT(3), CUR-
LOPT_CAINFO_BLOB(3), CURLOPT_CAPATH(3), CURLOPT_SSL_VERIFYHOST(3), CUR-
LOPT_SSL_VERIFYPEER(3)
ibcurl 8.4.0 September 26, 2023 CURLOPT_CAINFO(3)
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