X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fsptps.h;h=75a95651bdfc083cc1b24939b576db38a23fa971;hb=ae89a25695411149a7499189c9771762ad1f1726;hp=065c6a099d24d146a2120e4cf489b4d2005e88d0;hpb=84570275acd84628586a6ca591a283d074ca10f0;p=tinc

diff --git a/src/sptps.h b/src/sptps.h
index 065c6a09..75a95651 100644
--- a/src/sptps.h
+++ b/src/sptps.h
@@ -1,6 +1,6 @@
 /*
     sptps.h -- Simple Peer-to-Peer Security
-    Copyright (C) 2011 Guus Sliepen <guus@tinc-vpn.org>,
+    Copyright (C) 2011-2014 Guus Sliepen <guus@tinc-vpn.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -22,8 +22,7 @@
 
 #include "system.h"
 
-#include "cipher.h"
-#include "digest.h"
+#include "chacha-poly1305/chacha-poly1305.h"
 #include "ecdh.h"
 #include "ecdsa.h"
 
@@ -35,16 +34,20 @@
 #define SPTPS_CLOSE 130       // Application closed the connection
 
 // Key exchange states
-#define SPTPS_KEX 0           // Waiting for the first Key EXchange record
-#define SPTPS_SECONDARY_KEX 1 // Ready to receive a secondary Key EXchange record
-#define SPTPS_SIG 2           // Waiting for a SIGnature record
-#define SPTPS_ACK 3           // Waiting for an ACKnowledgement record
+#define SPTPS_KEX 1           // Waiting for the first Key EXchange record
+#define SPTPS_SECONDARY_KEX 2 // Ready to receive a secondary Key EXchange record
+#define SPTPS_SIG 3           // Waiting for a SIGnature record
+#define SPTPS_ACK 4           // Waiting for an ACKnowledgement record
 
-typedef bool (*send_data_t)(void *handle, const char *data, size_t len);
-typedef bool (*receive_record_t)(void *handle, uint8_t type, const char *data, uint16_t len);
+// Overhead for datagrams
+#define SPTPS_DATAGRAM_OVERHEAD 21
+
+typedef bool (*send_data_t)(void *handle, uint8_t type, const void *data, size_t len);
+typedef bool (*receive_record_t)(void *handle, uint8_t type, const void *data, uint16_t len);
 
 typedef struct sptps {
 	bool initiator;
+	bool datagram;
 	int state;
 
 	char *inbuf;
@@ -52,18 +55,20 @@ typedef struct sptps {
 	uint16_t reclen;
 
 	bool instate;
-	cipher_t incipher;
-	digest_t indigest;
+	chacha_poly1305_ctx_t *incipher;
 	uint32_t inseqno;
+	uint32_t received;
+	unsigned int replaywin;
+	unsigned int farfuture;
+	char *late;
 
 	bool outstate;
-	cipher_t outcipher;
-	digest_t outdigest;
+	chacha_poly1305_ctx_t *outcipher;
 	uint32_t outseqno;
 
-	ecdsa_t mykey;
-	ecdsa_t hiskey;
-	ecdh_t ecdh;
+	ecdsa_t *mykey;
+	ecdsa_t *hiskey;
+	ecdh_t *ecdh;
 
 	char *mykex;
 	char *hiskex;
@@ -76,10 +81,15 @@ typedef struct sptps {
 	receive_record_t receive_record;
 } sptps_t;
 
-extern bool sptps_start(sptps_t *s, void *handle, bool initiator, ecdsa_t mykey, ecdsa_t hiskey, const char *label, size_t labellen, send_data_t send_data, receive_record_t receive_record);
+extern unsigned int sptps_replaywin;
+extern void sptps_log_quiet(sptps_t *s, int s_errno, const char *format, va_list ap);
+extern void sptps_log_stderr(sptps_t *s, int s_errno, const char *format, va_list ap);
+extern void (*sptps_log)(sptps_t *s, int s_errno, const char *format, va_list ap);
+extern bool sptps_start(sptps_t *s, void *handle, bool initiator, bool datagram, ecdsa_t *mykey, ecdsa_t *hiskey, const void *label, size_t labellen, send_data_t send_data, receive_record_t receive_record);
 extern bool sptps_stop(sptps_t *s);
-extern bool sptps_send_record(sptps_t *s, uint8_t type, const char *data, uint16_t len);
-extern bool sptps_receive_data(sptps_t *s, const char *data, size_t len);
+extern bool sptps_send_record(sptps_t *s, uint8_t type, const void *data, uint16_t len);
+extern size_t sptps_receive_data(sptps_t *s, const void *data, size_t len);
 extern bool sptps_force_kex(sptps_t *s);
+extern bool sptps_verify_datagram(sptps_t *s, const void *data, size_t len);
 
 #endif