+static int init_certificate_authorities(SSL *s, unsigned int context)
+{
+ sk_X509_NAME_pop_free(s->s3->tmp.peer_ca_names, X509_NAME_free);
+ s->s3->tmp.peer_ca_names = NULL;
+ return 1;
+}
+
+static int tls_construct_certificate_authorities(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx, int *al)
+{
+ const STACK_OF(X509_NAME) *ca_sk = SSL_get0_CA_list(s);
+
+ if (ca_sk == NULL || sk_X509_NAME_num(ca_sk) == 0)
+ return 1;
+
+ if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_certificate_authorities)
+ || !WPACKET_start_sub_packet_u16(pkt)
+ || !construct_ca_names(s, pkt)
+ || !WPACKET_close(pkt)) {
+ SSLerr(SSL_F_TLS_CONSTRUCT_CERTIFICATE_AUTHORITIES,
+ ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+
+ return 1;
+}
+
+static int tls_parse_certificate_authorities(SSL *s, PACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx, int *al)
+{
+ if (!parse_ca_names(s, pkt, al))
+ return 0;
+ if (PACKET_remaining(pkt) != 0) {
+ *al = SSL_AD_DECODE_ERROR;
+ return 0;
+ }
+ return 1;
+}
+