CURLOPT_ISSUERCERT(3) curl_easy_setopt options CURLOPT_ISSUERCERT(3)NAMECURLOPT_ISSUERCERT - issuer SSL certificate filename
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ISSUERCERT, char
*file);
DESCRIPTION
Pass a char * to a zero terminated string naming a file holding a CA
certificate in PEM format. If the option is set, an additional check
against the peer certificate is performed to verify the issuer is
indeed the one associated with the certificate provided by the option.
This additional check is useful in multi-level PKI where one needs to
enforce that the peer certificate is from a specific branch of the
tree.
This option makes sense only when used in combination with the CUR‐
LOPT_SSL_VERIFYPEER(3) option. Otherwise, the result of the check is
not considered as failure.
A specific error code (CURLE_SSL_ISSUER_ERROR) is defined with the
option, which is returned if the setup of the SSL/TLS session has
failed due to a mismatch with the issuer of peer certificate (CUR‐
LOPT_SSL_VERIFYPEER(3) has to be set too for the check to fail). (Added
in 7.19.0)
DEFAULT
NULL
PROTOCOLS
All TLS-based protocols
EXAMPLE
TODO
AVAILABILITY
If built TLS enabled
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 ALSOCURLOPT_CRLFILE(3), CURLOPT_SSL_VERIFYPEER(3),
libcurl 7.37.0 19 Jun 2014 CURLOPT_ISSUERCERT(3)
