Update OpenSSL to AOSP -master

1 files changed, 35 insertions, 18 deletions

diff --git a/main/openssl/ssl/d1_srvr.c b/main/openssl/ssl/d1_srvr.c
index 03b20a27..a7751350 100644
--- a/main/openssl/ssl/d1_srvr.c
+++ b/main/openssl/ssl/d1_srvr.c
@@ -233,6 +233,7 @@ int dtls1_accept(SSL *s)
 					}
 				if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
 					{
+					BUF_MEM_free(buf);
 					ret= -1;
 					goto end;
 					}
@@ -246,6 +247,9 @@ int dtls1_accept(SSL *s)
 				}
 
 			s->init_num=0;
+			s->d1->change_cipher_spec_ok = 0;
+			/* Should have been reset by ssl3_get_finished, too. */
+			s->s3->change_cipher_spec = 0;
 
 			if (s->state != SSL_ST_RENEGOTIATE)
 				{
@@ -450,24 +454,15 @@ int dtls1_accept(SSL *s)
 		case SSL3_ST_SW_KEY_EXCH_B:
 			alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
 
-			/* clear this, it may get reset by
-			 * send_server_key_exchange */
-			if ((s->options & SSL_OP_EPHEMERAL_RSA)
-#ifndef OPENSSL_NO_KRB5
-				&& !(alg_k & SSL_kKRB5)
-#endif /* OPENSSL_NO_KRB5 */
-				)
-				/* option SSL_OP_EPHEMERAL_RSA sends temporary RSA key
-				 * even when forbidden by protocol specs
-				 * (handshake may fail as clients are not required to
-				 * be able to handle this) */
-				s->s3->tmp.use_rsa_tmp=1;
-			else
-				s->s3->tmp.use_rsa_tmp=0;
+			/*
+			 * clear this, it may get reset by
+			 * send_server_key_exchange
+			 */
+			s->s3->tmp.use_rsa_tmp=0;
 
 			/* only send if a DH key exchange or
 			 * RSA but we have a sign only certificate */
-			if (s->s3->tmp.use_rsa_tmp
+			if (0
 			/* PSK: send ServerKeyExchange if PSK identity
 			 * hint if provided */
 #ifndef OPENSSL_NO_PSK
@@ -658,8 +653,14 @@ int dtls1_accept(SSL *s)
 
 		case SSL3_ST_SR_CERT_VRFY_A:
 		case SSL3_ST_SR_CERT_VRFY_B:
-
-			s->d1->change_cipher_spec_ok = 1;
+			/*
+			 * This *should* be the first time we enable CCS, but be
+			 * extra careful about surrounding code changes. We need
+			 * to set this here because we don't know if we're
+			 * expecting a CertificateVerify or not.
+			 */
+			if (!s->s3->change_cipher_spec)
+				s->d1->change_cipher_spec_ok = 1;
 			/* we should decide if we expected this one */
 			ret=ssl3_get_cert_verify(s);
 			if (ret <= 0) goto end;
@@ -675,7 +676,18 @@ int dtls1_accept(SSL *s)
 
 		case SSL3_ST_SR_FINISHED_A:
 		case SSL3_ST_SR_FINISHED_B:
-			s->d1->change_cipher_spec_ok = 1;
+			/*
+			 * Enable CCS for resumed handshakes.
+			 * In a full handshake, we end up here through
+			 * SSL3_ST_SR_CERT_VRFY_B, so change_cipher_spec_ok was
+			 * already set. Receiving a CCS clears the flag, so make
+			 * sure not to re-enable it to ban duplicates.
+			 * s->s3->change_cipher_spec is set when a CCS is
+			 * processed in d1_pkt.c, and remains set until
+			 * the client's Finished message is read.
+			 */
+			if (!s->s3->change_cipher_spec)
+				s->d1->change_cipher_spec_ok = 1;
 			ret=ssl3_get_finished(s,SSL3_ST_SR_FINISHED_A,
 				SSL3_ST_SR_FINISHED_B);
 			if (ret <= 0) goto end;
@@ -1604,6 +1616,11 @@ int dtls1_send_server_certificate(SSL *s)
 			}
 
 		l=dtls1_output_cert_chain(s,x);
+		if (!l)
+			{
+			SSLerr(SSL_F_DTLS1_SEND_SERVER_CERTIFICATE,ERR_R_INTERNAL_ERROR);
+			return(0);
+			}
 		s->state=SSL3_ST_SW_CERT_B;
 		s->init_num=(int)l;
 		s->init_off=0;