+int dtls_get_message(SSL *s, int *mt, unsigned long *len)
+{
+ struct hm_header_st *msg_hdr;
+ unsigned char *p;
+ unsigned long msg_len;
+ int ok;
+ long tmplen;
+
+ msg_hdr = &s->d1->r_msg_hdr;
+ memset(msg_hdr, 0, sizeof(*msg_hdr));
+
+ again:
+ ok = dtls_get_reassembled_message(s, &tmplen);
+ if (tmplen == DTLS1_HM_BAD_FRAGMENT
+ || tmplen == DTLS1_HM_FRAGMENT_RETRY) {
+ /* bad fragment received */
+ goto again;
+ } else if (tmplen <= 0 && !ok) {
+ return 0;
+ }
+
+ *mt = s->s3->tmp.message_type;
+
+ p = (unsigned char *)s->init_buf->data;
+
+ if (*mt == SSL3_MT_CHANGE_CIPHER_SPEC) {
+ if (s->msg_callback) {
+ s->msg_callback(0, s->version, SSL3_RT_CHANGE_CIPHER_SPEC,
+ p, 1, s, s->msg_callback_arg);
+ }
+ /*
+ * This isn't a real handshake message so skip the processing below.
+ */
+ return 1;
+ }
+
+ msg_len = msg_hdr->msg_len;
+
+ /* reconstruct message header */
+ *(p++) = msg_hdr->type;
+ l2n3(msg_len, p);
+ s2n(msg_hdr->seq, p);
+ l2n3(0, p);
+ l2n3(msg_len, p);
+ if (s->version != DTLS1_BAD_VER) {
+ p -= DTLS1_HM_HEADER_LENGTH;
+ msg_len += DTLS1_HM_HEADER_LENGTH;
+ }
+
+ ssl3_finish_mac(s, p, msg_len);
+ if (s->msg_callback)
+ s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
+ p, msg_len, s, s->msg_callback_arg);
+
+ memset(msg_hdr, 0, sizeof(*msg_hdr));
+
+ s->d1->handshake_read_seq++;
+
+
+ s->init_msg = s->init_buf->data + DTLS1_HM_HEADER_LENGTH;
+ *len = s->init_num;
+
+ return 1;
+}
+
+static int dtls1_preprocess_fragment(SSL *s, struct hm_header_st *msg_hdr)