1=pod 2 3=head1 NAME 4 5SSL_get_peer_cert_chain - get the X509 certificate chain of the peer 6 7=head1 SYNOPSIS 8 9 #include <openssl/ssl.h> 10 11 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *ssl); 12 13=head1 DESCRIPTION 14 15SSL_get_peer_cert_chain() returns a pointer to STACK_OF(X509) certificates 16forming the certificate chain of the peer. If called on the client side, 17the stack also contains the peer's certificate; if called on the server 18side, the peer's certificate must be obtained separately using 19L<SSL_get_peer_certificate(3)|SSL_get_peer_certificate(3)>. 20If the peer did not present a certificate, NULL is returned. 21 22=head1 NOTES 23 24The peer certificate chain is not necessarily available after reusing 25a session, in which case a NULL pointer is returned. 26 27The reference count of the STACK_OF(X509) object is not incremented. 28If the corresponding session is freed, the pointer must not be used 29any longer. 30 31=head1 RETURN VALUES 32 33The following return values can occur: 34 35=over 4 36 37=item NULL 38 39No certificate was presented by the peer or no connection was established 40or the certificate chain is no longer available when a session is reused. 41 42=item Pointer to a STACK_OF(X509) 43 44The return value points to the certificate chain presented by the peer. 45 46=back 47 48=head1 SEE ALSO 49 50L<ssl(3)|ssl(3)>, L<SSL_get_peer_certificate(3)|SSL_get_peer_certificate(3)> 51 52=cut 53