SSL_get_peer_cert_chain 3 2005-04-23 0.9.9-dev OpenSSL

### NAME

SSL_get_peer_cert_chain - get the X509 certificate chain of the peer

### LIBRARY

libcrypto, -lcrypto

### SYNOPSIS

     #include

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

### DESCRIPTION

SSL_get_peer_cert_chain() returns a pointer to STACKOF(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 STACKOF(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 STACKOF(X509) The return value points to the certificate chain presented by the peer.

### SEE ALSO

ssl(3), SSL_get_peer_certificate(3)