Use a status bit to track which nodes use SPTPS.

diff --git a/src/graph.c b/src/graph.c
index 506b6df..9da552e 100644 (file)
--- a/src/graph.c
+++ b/src/graph.c
@@ -226,6 +226,9 @@ static void check_reachability(void) {
                                           n->name, n->hostname);
                        }
 
+                       if(experimental && OPTION_VERSION(n->options) >= 2)
+                               n->status.sptps = true;
+
                        /* TODO: only clear status.validkey if node is unreachable? */
 
                        n->status.validkey = false;
@@ -266,7 +269,7 @@ static void check_reachability(void) {
                        if(!n->status.reachable) {
                                update_node_udp(n, NULL);
                        } else if(n->connection) {
-                               if(experimental && OPTION_VERSION(n->options) >= 2) {
+                               if(n->status.sptps) {
                                        if(n->connection->outgoing)
                                                send_req_key(n);
                                } else {

diff --git a/src/info.c b/src/info.c
index eb0d395..0ff56cd 100644 (file)
--- a/src/info.c
+++ b/src/info.c
@@ -104,6 +104,8 @@ static int info_node(int fd, const char *item) {
                printf(" reachable");
        if(status.indirect)
                printf(" indirect");
+       if(status.sptps)
+               printf(" sptps");
        printf("\n");
        printf("Options:     ");
        if(options & OPTION_INDIRECT)

diff --git a/src/net_packet.c b/src/net_packet.c
index a744485..4df8d97 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -252,7 +252,7 @@ static void receive_packet(node_t *n, vpn_packet_t *packet) {
 }
 
 static bool try_mac(node_t *n, const vpn_packet_t *inpkt) {
-       if(experimental && OPTION_VERSION(n->options) >= 2)
+       if(n->status.sptps)
                return sptps_verify_datagram(&n->sptps, (char *)inpkt->data - 4, inpkt->len);
 
        if(!digest_active(&n->indigest) || inpkt->len < sizeof inpkt->seqno + digest_length(&n->indigest))
@@ -268,7 +268,7 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) {
        vpn_packet_t *outpkt = pkt[0];
        size_t outlen;
 
-       if(experimental && OPTION_VERSION(n->options) >= 2) {
+       if(n->status.sptps) {
                sptps_receive_data(&n->sptps, (char *)inpkt->data - 4, inpkt->len);
                return;
        }
@@ -438,7 +438,7 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) {
                return;
        }
 
-       if(experimental && OPTION_VERSION(n->options) >= 2) {
+       if(n->status.sptps) {
                uint8_t type = 0;
                if(!(inpkt->data[12] | inpkt->data[13]))
                        type = PKT_PROBE;

diff --git a/src/net_setup.c b/src/net_setup.c
index bebde4d..30ab0fa 100644 (file)
--- a/src/net_setup.c
+++ b/src/net_setup.c
@@ -709,6 +709,7 @@ static bool setup_myself(void) {
        myself->nexthop = myself;
        myself->via = myself;
        myself->status.reachable = true;
+       myself->status.sptps = experimental;
        node_add(myself);
 
        graph();

diff --git a/src/node.h b/src/node.h
index 23be362..e7f1f62 100644 (file)
--- a/src/node.h
+++ b/src/node.h
@@ -34,7 +34,8 @@ typedef struct node_status_t {
        unsigned int visited:1;                 /* 1 if this node has been visited by one of the graph algorithms */
        unsigned int reachable:1;               /* 1 if this node is reachable in the graph */
        unsigned int indirect:1;                /* 1 if this node is not directly reachable by us */
-       unsigned int unused:26;
+       unsigned int sptps:1;                   /* 1 if this node supports SPTPS */
+       unsigned int unused:25;
 } node_status_t;
 
 typedef struct node_t {

diff --git a/src/protocol_auth.c b/src/protocol_auth.c
index 790d324..88c6255 100644 (file)
--- a/src/protocol_auth.c
+++ b/src/protocol_auth.c
@@ -506,7 +506,7 @@ bool send_ack(connection_t *c) {
 
        get_config_int(lookup_config(c->config_tree, "Weight"), &c->estimated_weight);
 
-       return send_request(c, "%d %s %d %x", ACK, myport, c->estimated_weight, (c->options & 0xffffff) | (PROT_MINOR << 24));
+       return send_request(c, "%d %s %d %x", ACK, myport, c->estimated_weight, (c->options & 0xffffff) | (experimental ? (PROT_MINOR << 24) : 0));
 }
 
 static void send_everything(connection_t *c) {

diff --git a/src/protocol_key.c b/src/protocol_key.c
index 98b934c..bbe0239 100644 (file)
--- a/src/protocol_key.c
+++ b/src/protocol_key.c
@@ -47,7 +47,7 @@ void send_key_changed(void) {
        for(node = connection_tree->head; node; node = node->next) {
                c = node->data;
                if(c->status.active && c->node && c->node->status.reachable) {
-                       if(!experimental || OPTION_VERSION(c->node->options) < 2)
+                       if(!c->node->status.sptps)
                                send_ans_key(c->node);
                }
        }
@@ -57,7 +57,7 @@ void send_key_changed(void) {
        if(experimental) {
                for(node = node_tree->head; node; node = node->next) {
                        node_t *n = node->data;
-                       if(n->status.reachable && n->status.validkey && OPTION_VERSION(n->options) >= 2)
+                       if(n->status.reachable && n->status.validkey && n->status.sptps)
                                sptps_force_kex(&n->sptps);
                }
        }
@@ -84,7 +84,7 @@ bool key_changed_h(connection_t *c, const char *request) {
                return true;
        }
 
-       if(OPTION_VERSION(n->options) < 2) {
+       if(!n->status.sptps) {
                n->status.validkey = false;
                n->last_req_key = 0;
        }
@@ -106,7 +106,7 @@ static bool send_initial_sptps_data(void *handle, uint8_t type, const char *data
 }
 
 bool send_req_key(node_t *to) {
-       if(experimental && OPTION_VERSION(to->options) >= 2) {
+       if(to->status.sptps) {
                if(!node_read_ecdsa_public_key(to)) {
                        logger(DEBUG_ALWAYS, LOG_DEBUG, "No ECDSA key known for %s (%s)", to->name, to->hostname);
                        send_request(to->nexthop->connection, "%d %s %s %d", REQ_KEY, myself->name, to->name, REQ_PUBKEY);
@@ -213,10 +213,12 @@ bool req_key_h(connection_t *c, const char *request) {
 
        /* Check if this key request is for us */
 
-       if(to == myself) {                      /* Yes, send our own key back */
+       if(to == myself) {                      /* Yes */
+               /* Is this an extended REQ_KEY message? */
                if(experimental && reqno)
                        return req_key_ext_h(c, request, from, reqno);
 
+               /* No, just send our key back */
                send_ans_key(from);
        } else {
                if(tunnelserver)
@@ -235,7 +237,7 @@ bool req_key_h(connection_t *c, const char *request) {
 }
 
 bool send_ans_key(node_t *to) {
-       if(experimental && OPTION_VERSION(to->options) >= 2)
+       if(to->status.sptps)
                abort();
 
        size_t keylen = cipher_keylength(&myself->incipher);
@@ -329,7 +331,7 @@ bool ans_key_h(connection_t *c, const char *request) {
 
        /* SPTPS or old-style key exchange? */
 
-       if(experimental && OPTION_VERSION(from->options) >= 2) {
+       if(from->status.sptps) {
                char buf[strlen(key)];
                int len = b64decode(key, buf, strlen(key));