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Update reference to Lua state prior to handshake

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The Lua thread that creates the context is saved to be used for
accessing callback related data. However that thread may become garbage
and its memory could be overwritten with anything if the handshake
happens later, in a different thread.

Fixes #75

Thanks @Zash
This commit is contained in:
Bruno Silvestre 2018-09-10 10:49:18 -03:00
parent dea60edf4f
commit d4ea2d12f3
1 changed files with 3 additions and 1 deletions
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4
src/ssl.c
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@ -382,9 +382,11 @@ static int meth_setfd(lua_State *L)
*/
static int meth_handshake(lua_State *L)
{
int err;
p_ssl ssl = (p_ssl)luaL_checkudata(L, 1, "SSL:Connection");
int err = handshake(ssl);
p_context ctx = (p_context)SSL_CTX_get_app_data(SSL_get_SSL_CTX(ssl->ssl));
ctx->L = L;
err = handshake(ssl);
if (ctx->dh_param) {
DH_free(ctx->dh_param);
ctx->dh_param = NULL;