Merge branch 'OpenSSL_1_0_2-stable' of openssl.net:openssl into OpenSSL_1_0_2-stable

[oweals/openssl.git] / ssl / d1_pkt.c

diff --git a/ssl/d1_pkt.c b/ssl/d1_pkt.c
index 02c881ab3176c849c800b013f73a1f061aa641d9..8186462d4a6be97eab48f424eb1b6b6e61299f21 100644 (file)
--- a/ssl/d1_pkt.c
+++ b/ssl/d1_pkt.c
@@ -379,7 +379,7 @@ dtls1_process_record(SSL *s)
        int enc_err;
        SSL_SESSION *sess;
        SSL3_RECORD *rr;
-       unsigned int mac_size;
+       unsigned int mac_size, orig_len;
        unsigned char md[EVP_MAX_MD_SIZE];
 
        rr= &(s->s3->rrec);
@@ -410,7 +410,6 @@ dtls1_process_record(SSL *s)
 
        /* decrypt in place in 'rr->input' */
        rr->data=rr->input;
-       rr->orig_len=rr->length;
 
        enc_err = s->method->ssl3_enc->enc(s,0);
        /* enc_err is:
@@ -442,18 +441,21 @@ printf("\n");
                mac_size=EVP_MD_CTX_size(s->read_hash);
                OPENSSL_assert(mac_size <= EVP_MAX_MD_SIZE);
 
+               /* kludge: *_cbc_remove_padding passes padding length in rr->type */
+               orig_len = rr->length+((unsigned int)rr->type>>8);
+
                /* orig_len is the length of the record before any padding was
                 * removed. This is public information, as is the MAC in use,
                 * therefore we can safely process the record in a different
                 * amount of time if it's too short to possibly contain a MAC.
                 */
-               if (rr->orig_len < mac_size ||
+               if (orig_len < mac_size ||
                    /* CBC records must have a padding length byte too. */
                    (EVP_CIPHER_CTX_mode(s->enc_read_ctx) == EVP_CIPH_CBC_MODE &&
-                    rr->orig_len < mac_size+1))
+                    orig_len < mac_size+1))
                        {
                        al=SSL_AD_DECODE_ERROR;
-                       SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_LENGTH_TOO_SHORT);
+                       SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_LENGTH_TOO_SHORT);
                        goto f_err;
                        }
 
@@ -465,12 +467,12 @@ printf("\n");
                         * without leaking the contents of the padding bytes.
                         * */
                        mac = mac_tmp;
-                       ssl3_cbc_copy_mac(mac_tmp, rr, mac_size);
+                       ssl3_cbc_copy_mac(mac_tmp, rr, mac_size, orig_len);
                        rr->length -= mac_size;
                        }
                else
                        {
-                       /* In this case there's no padding, so |rec->orig_len|
+                       /* In this case there's no padding, so |orig_len|
                         * equals |rec->length| and we checked that there's
                         * enough bytes for |mac_size| above. */
                        rr->length -= mac_size;
@@ -845,6 +847,12 @@ start:
                        }
                }
 
+       if (s->d1->listen && rr->type != SSL3_RT_HANDSHAKE)
+               {
+               rr->length = 0;
+               goto start;
+               }
+
        /* we now have a packet which can be read and processed */
 
        if (s->s3->change_cipher_spec /* set when we receive ChangeCipherSpec,
@@ -1049,6 +1057,7 @@ start:
                        !(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS) &&
                        !s->s3->renegotiate)
                        {
+                       s->d1->handshake_read_seq++;
                        s->new_session = 1;
                        ssl3_renegotiate(s);
                        if (ssl3_renegotiate_check(s))