Use variable length arrays instead of alloca().

[tinc] / src / protocol_auth.c

diff --git a/src/protocol_auth.c b/src/protocol_auth.c
index 3f4fa01..cde7ead 100644 (file)
--- a/src/protocol_auth.c
+++ b/src/protocol_auth.c
@@ -109,15 +109,13 @@ bool id_h(connection_t *c) {
 }
 
 bool send_metakey(connection_t *c) {
-       char *buffer;
-       int len;
        bool x;
 
-       len = RSA_size(c->rsa_key);
+       int len = RSA_size(c->rsa_key);
 
        /* Allocate buffers for the meta key */
 
-       buffer = alloca(2 * len + 1);
+       char buffer[2 * len + 1];
        
        c->outkey = xrealloc(c->outkey, len);
 
@@ -287,16 +285,13 @@ bool metakey_h(connection_t *c) {
 }
 
 bool send_challenge(connection_t *c) {
-       char *buffer;
-       int len;
-
        /* CHECKME: what is most reasonable value for len? */
 
-       len = RSA_size(c->rsa_key);
+       int len = RSA_size(c->rsa_key);
 
        /* Allocate buffers for the challenge */
 
-       buffer = alloca(2 * len + 1);
+       char buffer[2 * len + 1];
 
        c->hischallenge = xrealloc(c->hischallenge, len);