ne_ssl_cert_identity, ne_ssl_cert_signedby, ne_ssl_cert_issuer, ne_ssl_cert_subject — functions to access certificate properties
#include <ne_ssl.h>
| const char *ne_ssl_cert_identity( | const ne_ssl_certificate *cert ); | 
| const ne_ssl_certificate *ne_ssl_cert_signedby( | const ne_ssl_certificate *cert ); | 
| const ne_ssl_dname *ne_ssl_cert_subject( | const ne_ssl_certificate *cert ); | 
| const ne_ssl_dname *ne_ssl_cert_issuer( | const ne_ssl_certificate *cert ); | 
The function ne_ssl_cert_identity
    retrieves the “identity” of a certificate; for an
    SSL server certificate, this will be the hostname for which the
    certificate was issued.  In PKI parlance, the identity is the
    common name attribute of the distinguished name of
    the certificate subject.
The functions ne_ssl_cert_subject and
    ne_ssl_cert_issuer can be used to access the
    objects representing the distinguished name of the subject and of
    the issuer of a certificate, respectively.
If a certificate object is part of a certificate chain, then
    ne_ssl_cert_signedby can be used to find the
    certificate which signed a particular certificate. For a
    self-signed certificate or a certificate for which the full chain
    is not available, this function will return NULL.
ne_ssl_cert_issuer and
    ne_ssl_cert_subject are guaranteed to never
    return NULL. ne_ssl_cert_identity may
    return NULL if the certificate has no specific
    “identity”. ne_ssl_cert_signedby
    may return NULL as covered above.
The following function could be used to display information about a given certificate:
void dump_cert(const ne_ssl_certificate *cert) {
  const char *id = ne_ssl_cert_identity(cert);
  char *dn;
  if (id) 
    printf("Certificate was issued for '%s'.\n", id);
  dn = ne_ssl_readable_dname(ne_ssl_cert_subject(cert));
  printf("Subject: %s\n", dn);
  free(dn);
  dn = ne_ssl_readable_dname(ne_ssl_cert_issuer(cert));
  printf("Issuer: %s\n", dn);
  free(dn);
}