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Make nse_selectedbyname return false if the "NSE_SELECTED_BY_NAME" key

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is not in the registry. That function is called indirectly by
nmap.verbosity, which may be called before _R["NSE_SELECTED_BY_NAME"]
has been given a value. I was getting this error with any script scan:

NSE: failed to initialize the script engine:
attempt to call a nil value
stack traceback:
        [C]: in function 'verbosity'
        ./nse_main.lua:136: in function 'print_verbose'
        ./nse_main.lua:680: in main chunk
        [C]: ?

QUITTING!
This commit is contained in:
david 2009-07-15 02:54:03 +00:00
parent 276def3c2e
commit dab741f30f
1 changed files with 6 additions and 1 deletions
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7
nse_main.cc
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@ -533,7 +533,12 @@ void nse_base (lua_State *L)
void nse_selectedbyname (lua_State *L)
{
lua_getfield(L, LUA_REGISTRYINDEX, NSE_SELECTED_BY_NAME);
lua_call(L, 0, 1); /* returns boolean, whether script was selected by name */
if (lua_isnil(L, -1)) {
lua_pushboolean(L, 0);
lua_replace(L, -2);
} else {
lua_call(L, 0, 1); /* returns boolean, whether script was selected by name */
}
}
static lua_State *L_NSE = NULL;