NAME
SSL_get_peer_cert_chain - get the X509 certificate chain of the peer
LIBRARY
libcrypto, -lcrypto
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)
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.
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)