SSL_get_peer_cert_chain(3)

NAME

       SSL_get_peer_cert_chain - get the X509 certificate chain of the peer

SYNOPSIS

        #include <openssl/ssl.h>

        STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl);

DESCRIPTION

       SSL_get_peer_cert_chain() returns a pointer to STACK_OF(X509) certifi-
       cates forming the certificate chain of the peer. If called on the
       client side, the stack also contains the peer's certificate; if called
       on the server side, the peer's certificate must be obtained separately
       using SSL_get_peer_certificate(3).  If the peer did not present a cer-
       tificate, NULL is returned.

NOTES

       The peer certificate chain is not necessarily available after reusing a
       session, in which case a NULL pointer is returned.

       The reference count of the STACK_OF(X509) object is not incremented.
       If the corresponding session is freed, the pointer must not be used any
       longer.

RETURN VALUES

       The following return values can occur:

       NULL
           No certificate was presented by the peer or no connection was
           established or the certificate chain is no longer available when a
           session is reused.

       Pointer to a STACK_OF(X509)
           The return value points to the certificate chain presented by the
           peer.

SEE ALSO

       ssl(3), SSL_get_peer_certificate(3)

1.0.2t                            2019-09-10        SSL_get_peer_cert_chain(3)