From: Guus Sliepen <guus@tinc-vpn.org>
Date: Sun, 12 May 2013 11:39:22 +0000 (+0200)
Subject: Don't try to handle incoming data if sptps_start() has not been called yet.
X-Git-Tag: release-1.1pre8~46
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=fa20cfceecee1756ecb7882b6fe9167f4db92777;p=oweals%2Ftinc.git

Don't try to handle incoming data if sptps_start() has not been called yet.
---

diff --git a/src/sptps.c b/src/sptps.c
index 03a1e9a..7206934 100644
--- a/src/sptps.c
+++ b/src/sptps.c
@@ -520,6 +520,9 @@ static bool sptps_receive_data_datagram(sptps_t *s, const char *data, size_t len
 
 // Receive incoming data. Check if it contains a complete record, if so, handle it.
 bool sptps_receive_data(sptps_t *s, const char *data, size_t len) {
+	if(!s->state)
+		return error(s, EIO, "Invalid session state");
+
 	if(s->datagram)
 		return sptps_receive_data_datagram(s, data, len);
 
diff --git a/src/sptps.h b/src/sptps.h
index ee41f46..3a8e65f 100644
--- a/src/sptps.h
+++ b/src/sptps.h
@@ -35,10 +35,10 @@
 #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, uint8_t type, const char *data, size_t len);
 typedef bool (*receive_record_t)(void *handle, uint8_t type, const char *data, uint16_t len);