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stack could overflow with too many command-line arguments

This commit is contained in:
Roberto Ierusalimschy 2005-04-11 15:01:35 -03:00
parent a7ea0c71e8
commit 2873d4efff
1 changed files with 12 additions and 13 deletions
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25
lua.c
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@ -1,5 +1,5 @@
/*
** $Id: lua.c,v 1.139 2005/03/29 16:47:48 roberto Exp roberto $
** $Id: lua.c,v 1.140 2005/03/30 19:50:29 roberto Exp roberto $
** Lua stand-alone interpreter
** See Copyright Notice in lua.h
*/
@ -102,15 +102,14 @@ static void print_version (void) {
}
static int getargs (lua_State *L, char *argv[], int n) {
int i, narg;
for (i=n+1; argv[i]; i++) {
luaL_checkstack(L, 1, "too many arguments to script");
static int getargs (lua_State *L, int argc, char **argv, int n) {
int narg = argc - (n + 1); /* number of arguments to the script */
int i;
luaL_checkstack(L, narg + 3, "too many arguments to script");
for (i=n+1; i < argc; i++)
lua_pushstring(L, argv[i]);
}
narg = i-(n+1); /* number of arguments to the script (not to `lua.c') */
lua_newtable(L);
for (i=0; argv[i]; i++) {
for (i=0; i < argc; i++) {
lua_pushstring(L, argv[i]);
lua_rawseti(L, -2, i - n);
}
@ -230,7 +229,7 @@ static int checkvar (lua_State *L) {
#define clearinteractive(i) (*i &= 2)
static int handle_argv (lua_State *L, char *argv[], int *interactive) {
static int handle_argv (lua_State *L, int argc, char **argv, int *interactive) {
if (argv[1] == NULL) { /* no arguments? */
*interactive = 0;
if (lua_stdin_is_tty())
@ -303,9 +302,9 @@ static int handle_argv (lua_State *L, char *argv[], int *interactive) {
}
} endloop:
if (argv[i] != NULL) {
const char *filename = argv[i];
int narg = getargs(L, argv, i); /* collect arguments */
int status;
const char *filename = argv[i];
int narg = getargs(L, argc, argv, i); /* collect arguments */
lua_setglobal(L, "arg");
clearinteractive(interactive);
status = luaL_loadfile(L, filename);
@ -347,7 +346,7 @@ static int pmain (lua_State *L) {
luaopen_stdlibs(L); /* open libraries */
status = handle_luainit(L);
if (status == 0) {
status = handle_argv(L, s->argv, &interactive);
status = handle_argv(L, s->argc, s->argv, &interactive);
if (status == 0 && interactive) dotty(L);
}
s->status = status;
@ -355,7 +354,7 @@ static int pmain (lua_State *L) {
}
int main (int argc, char *argv[]) {
int main (int argc, char **argv) {
int status;
struct Smain s;
lua_State *L = lua_open(); /* create state */