X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fprotocol_key.c;h=c14dfcacf4f3844cf6597355fcb56ef2fc73ae56;hb=e32d4f3db3f1ed3eebe2e11d57512b60a6c02fa6;hp=a957780b3633dfbef6d51748745dad8795520298;hpb=3a149f7521dfff67e6a790c1a830afc649ae083e;p=tinc

diff --git a/src/protocol_key.c b/src/protocol_key.c
index a957780b..c14dfcac 100644
--- a/src/protocol_key.c
+++ b/src/protocol_key.c
@@ -35,7 +35,7 @@
 
 void send_key_changed(void) {
 #ifndef DISABLE_LEGACY
-	send_request(everyone, "%d %x %s", KEY_CHANGED, rand(), myself->name);
+	send_request(everyone, "%d %x %s", KEY_CHANGED, prng(UINT32_MAX), myself->name);
 
 	/* Immediately send new keys to directly connected nodes to keep UDP mappings alive */
 
@@ -102,9 +102,9 @@ static bool send_initial_sptps_data(void *handle, uint8_t type, const void *data
 	(void)type;
 	node_t *to = handle;
 	to->sptps.send_data = send_sptps_data_myself;
-	char buf[len * 4 / 3 + 5];
 
-	b64encode(data, buf, len);
+	char buf[B64_SIZE(len)];
+	b64encode_tinc(data, buf, len);
 
 	return send_request(to->nexthop->connection, "%d %s %s %d %s", REQ_KEY, myself->name, to->name, REQ_KEY, buf);
 }
@@ -148,7 +148,7 @@ static bool req_key_ext_h(connection_t *c, const char *request, node_t *from, no
 		char buf[MAX_STRING_SIZE];
 		size_t len;
 
-		if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, buf) != 1 || !(len = b64decode(buf, buf, strlen(buf)))) {
+		if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, buf) != 1 || !(len = b64decode_tinc(buf, buf, strlen(buf)))) {
 			logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s) to %s (%s): %s", "SPTPS_PACKET", from->name, from->hostname, to->name, to->hostname, "invalid SPTPS data");
 			return true;
 		}
@@ -233,7 +233,7 @@ static bool req_key_ext_h(connection_t *c, const char *request, node_t *from, no
 		char buf[MAX_STRING_SIZE];
 		size_t len;
 
-		if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, buf) != 1 || !(len = b64decode(buf, buf, strlen(buf)))) {
+		if(sscanf(request, "%*d %*s %*s %*d " MAX_STRING, buf) != 1 || !(len = b64decode_tinc(buf, buf, strlen(buf)))) {
 			logger(DEBUG_ALWAYS, LOG_ERR, "Got bad %s from %s (%s): %s", "REQ_SPTPS_START", from->name, from->hostname, "invalid SPTPS data");
 			return true;
 		}
@@ -340,13 +340,13 @@ bool send_ans_key(node_t *to) {
 
 	randomize(key, keylen);
 
-	cipher_close(to->incipher);
-	digest_close(to->indigest);
+	cipher_free(&to->incipher);
+	digest_free(&to->indigest);
 
 	if(myself->incipher) {
-		to->incipher = cipher_open_by_nid(cipher_get_nid(myself->incipher));
+		to->incipher = cipher_alloc();
 
-		if(!to->incipher) {
+		if(!cipher_open_by_nid(to->incipher, cipher_get_nid(myself->incipher))) {
 			abort();
 		}
 
@@ -356,10 +356,11 @@ bool send_ans_key(node_t *to) {
 	}
 
 	if(myself->indigest) {
-		to->indigest = digest_open_by_nid(digest_get_nid(myself->indigest),
-		                                  digest_length(myself->indigest));
+		to->indigest = digest_alloc();
 
-		if(!to->indigest) {
+		if(!digest_open_by_nid(to->indigest,
+		                       digest_get_nid(myself->indigest),
+		                       digest_length(myself->indigest))) {
 			abort();
 		}
 
@@ -459,8 +460,8 @@ bool ans_key_h(connection_t *c, const char *request) {
 
 #ifndef DISABLE_LEGACY
 	/* Don't use key material until every check has passed. */
-	cipher_close(from->outcipher);
-	digest_close(from->outdigest);
+	cipher_free(&from->outcipher);
+	digest_free(&from->outdigest);
 #endif
 
 	if(!from->status.sptps) {
@@ -519,7 +520,7 @@ bool ans_key_h(connection_t *c, const char *request) {
 
 	if(from->status.sptps) {
 		uint8_t buf[strlen(key)];
-		size_t len = b64decode(key, buf, strlen(key));
+		size_t len = b64decode_tinc(key, buf, strlen(key));
 
 		if(!len || !sptps_receive_data(&from->sptps, buf, len)) {
 			/* Uh-oh. It might be that the tunnel is stuck in some corrupted state,
@@ -555,7 +556,10 @@ bool ans_key_h(connection_t *c, const char *request) {
 	/* Check and lookup cipher and digest algorithms */
 
 	if(cipher) {
-		if(!(from->outcipher = cipher_open_by_nid(cipher))) {
+		from->outcipher = cipher_alloc();
+
+		if(!cipher_open_by_nid(from->outcipher, cipher)) {
+			cipher_free(&from->outcipher);
 			logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses unknown cipher!", from->name, from->hostname);
 			return false;
 		}
@@ -564,7 +568,10 @@ bool ans_key_h(connection_t *c, const char *request) {
 	}
 
 	if(digest) {
-		if(!(from->outdigest = digest_open_by_nid(digest, maclength))) {
+		from->outdigest = digest_alloc();
+
+		if(!digest_open_by_nid(from->outdigest, digest, maclength)) {
+			digest_free(&from->outdigest);
 			logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses unknown digest!", from->name, from->hostname);
 			return false;
 		}