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Return the value from Lua's callback, fixes

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This commit is contained in:
Bruno Silvestre 2023-02-16 09:37:09 -03:00
parent c87fe7d5ea
commit 4f6aec07f6
1 changed files with 8 additions and 13 deletions
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21
src/context.c
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@ -708,12 +708,10 @@ static int set_alpn_cb(lua_State *L)
return 1;
}
static unsigned int server_psk_cb(
SSL *ssl,
const char *identity,
unsigned char *psk,
unsigned int max_psk_len
)
/**
* Callback to select the PSK.
*/
static unsigned int server_psk_cb(SSL *ssl, const char *identity, unsigned char *psk, unsigned int max_psk_len)
{
int psk_len;
const char *ret_psk;
@ -725,21 +723,18 @@ static unsigned int server_psk_cb(
lua_pushlightuserdata(L, (void*)pctx->context);
lua_gettable(L, -2);
lua_pushlstring(L, identity, strlen(identity));
lua_pushnumber(L, max_psk_len, max_psk_len);
lua_pushstring(L, identity);
lua_pushinteger(L, max_psk_len);
lua_call(L, 2, 1);
if (!lua_isstring(L, -1)) {
if (!lua_isstring(L, -1) || lua_objlen(L, -1) == 0) {
lua_pop(L, 2);
return 0;
}
ret_psk = luaL_checklstring(L, -1, &psk_len);
if (psk_len > max_psk_len) psk_len = max_psk_len;
memcpy(psk, ret_psk, psk_len);
memcpy(psk, ret_psk, (psk_len > max_psk_len) ? max_psk_len : psk_len);
lua_pop(L, 2);