SSL_get_peer_cert_chain - get the X509 certificate chain of the peer
STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl);
SSL_get_peer_cert_chain() returns a pointer to
STACK_OF(X509) certificates 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 certificate, NULL is returned.
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.
The following return values can occur:
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.