PR: 2535

Submitted by: Robin Seggelmann <seggelmann@fh-muenster.de>
Reviewed by: steve

Add SCTP support for DTLS (RFC 6083).

1 files changed, 63 insertions, 1 deletions

diff --git a/crypto/bio/bio.h b/crypto/bio/bio.h
index ab47abcf14..b4a1bd21b4 100644
--- a/crypto/bio/bio.h
+++ b/crypto/bio/bio.h
@@ -68,6 +68,10 @@
 
 #include <openssl/crypto.h>
 
+#ifndef OPENSSL_NO_SCTP
+#include <stdint.h>
+#endif
+
 #ifdef  __cplusplus
 extern "C" {
 #endif
@@ -95,6 +99,9 @@ extern "C" {
 #define BIO_TYPE_BIO		(19|0x0400)		/* (half a) BIO pair */
 #define BIO_TYPE_LINEBUFFER	(20|0x0200)		/* filter */
 #define BIO_TYPE_DGRAM		(21|0x0400|0x0100)
+#ifndef OPENSSL_NO_SCTP
+#define BIO_TYPE_DGRAM_SCTP	(24|0x0400|0x0100)
+#endif
 #define BIO_TYPE_ASN1 		(22|0x0200)		/* filter */
 #define BIO_TYPE_COMP 		(23|0x0200)		/* filter */
 
@@ -161,7 +168,22 @@ extern "C" {
 #define BIO_CTRL_DGRAM_SET_PEER           44 /* Destination for the data */
 
 #define BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT   45 /* Next DTLS handshake timeout to
-											  * adjust socket timeouts */
+                                              * adjust socket timeouts */
+
+#ifndef OPENSSL_NO_SCTP
+/* SCTP stuff */
+#define BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE	50
+#define BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY		51
+#define BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY		52
+#define BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD		53
+#define BIO_CTRL_DGRAM_SCTP_GET_SNDINFO		60
+#define BIO_CTRL_DGRAM_SCTP_SET_SNDINFO		61
+#define BIO_CTRL_DGRAM_SCTP_GET_RCVINFO		62
+#define BIO_CTRL_DGRAM_SCTP_SET_RCVINFO		63
+#define BIO_CTRL_DGRAM_SCTP_GET_PRINFO			64
+#define BIO_CTRL_DGRAM_SCTP_SET_PRINFO			65
+#define BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN		70
+#endif
 
 /* modifiers */
 #define BIO_FP_READ		0x02
@@ -331,6 +353,34 @@ typedef struct bio_f_buffer_ctx_struct
 /* Prefix and suffix callback in ASN1 BIO */
 typedef int asn1_ps_func(BIO *b, unsigned char **pbuf, int *plen, void *parg);
 
+#ifndef OPENSSL_NO_SCTP
+/* SCTP parameter structs */
+struct bio_dgram_sctp_sndinfo
+	{
+	uint16_t snd_sid;
+	uint16_t snd_flags;
+	uint32_t snd_ppid;
+	uint32_t snd_context;
+	};
+
+struct bio_dgram_sctp_rcvinfo
+	{
+	uint16_t rcv_sid;
+	uint16_t rcv_ssn;
+	uint16_t rcv_flags;
+	uint32_t rcv_ppid;
+	uint32_t rcv_tsn;
+	uint32_t rcv_cumtsn;
+	uint32_t rcv_context;
+	};
+
+struct bio_dgram_sctp_prinfo
+	{
+	uint16_t pr_policy;
+	uint32_t pr_value;
+	};
+#endif
+
 /* connect BIO stuff */
 #define BIO_CONN_S_BEFORE		1
 #define BIO_CONN_S_GET_IP		2
@@ -628,6 +678,9 @@ BIO_METHOD *BIO_f_linebuffer(void);
 BIO_METHOD *BIO_f_nbio_test(void);
 #ifndef OPENSSL_NO_DGRAM
 BIO_METHOD *BIO_s_datagram(void);
+#ifndef OPENSSL_NO_SCTP
+BIO_METHOD *BIO_s_datagram_sctp(void);
+#endif
 #endif
 
 /* BIO_METHOD *BIO_f_ber(void); */
@@ -670,6 +723,15 @@ int BIO_set_tcp_ndelay(int sock,int turn_on);
 
 BIO *BIO_new_socket(int sock, int close_flag);
 BIO *BIO_new_dgram(int fd, int close_flag);
+#ifndef OPENSSL_NO_SCTP
+BIO *BIO_new_dgram_sctp(int fd, int close_flag);
+int BIO_dgram_is_sctp(BIO *bio);
+int BIO_dgram_sctp_notification_cb(BIO *b,
+                                   void (*handle_notifications)(BIO *bio, void *context, void *buf),
+                                   void *context);
+int BIO_dgram_sctp_wait_for_dry(BIO *b);
+int BIO_dgram_sctp_msg_waiting(BIO *b);
+#endif
 BIO *BIO_new_fd(int fd, int close_flag);
 BIO *BIO_new_connect(char *host_port);
 BIO *BIO_new_accept(char *host_port);