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src/gui/lua/lua_filehelpers.cpp fix possible segfault if string argument is not a string (nil)

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This commit is contained in:
Jacek Jendrzej
2016-09-07 18:05:01 +02:00
parent 6a9c08ae90
commit 6aab8c6d12
1 changed files with 62 additions and 40 deletions
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102
src/gui/lua/lua_filehelpers.cpp
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@@ -93,26 +93,23 @@ int CLuaInstFileHelpers::FileHelpersCp(lua_State *L)
return 1;
}
if (!lua_isstring(L, 2)) {
printf("luascript cp: argument 1 is not a string.\n");
if (!lua_isstring(L, 2) || !lua_isstring(L, 3)) {
printf("%s: argument 1 or 2 is not a string.\n",__func__);
lua_pushboolean(L, false);
return 1;
}
const char *from = "";
from = luaL_checkstring(L, 2);
if (!lua_isstring(L, 3)) {
printf("luascript cp: argument 2 is not a string.\n");
lua_pushboolean(L, false);
return 1;
}
const char *to = "";
to = luaL_checkstring(L, 3);
const char *from = luaL_checkstring(L, 2);
const char *to = luaL_checkstring(L, 3);
const char *flags = "";
if (numargs > min_numargs)
if (numargs > min_numargs){
if (!lua_isstring(L, 4)) {
printf("%s: argument 3 is not a string.\n",__func__);
lua_pushboolean(L, false);
return 1;
}
flags = luaL_checkstring(L, 4);
}
bool ret = false;
CFileHelpers fh;
fh.setConsoleQuiet(true);
@@ -143,9 +140,12 @@ int CLuaInstFileHelpers::FileHelpersChmod(lua_State *L)
lua_pushboolean(L, false);
return 1;
}
const char *file = "";
file = luaL_checkstring(L, 2);
if (!lua_isstring(L, 2)) {
printf("%s: argument 1 is not a string.\n",__func__);
lua_pushboolean(L, false);
return 1;
}
const char *file = luaL_checkstring(L, 2);
int mode_i = luaL_checkint(L, 3);
/* Hack for convert lua number to octal */
@@ -180,9 +180,12 @@ int CLuaInstFileHelpers::FileHelpersTouch(lua_State *L)
lua_pushboolean(L, false);
return 1;
}
const char *file = "";
file = luaL_checkstring(L, 2);
if (!lua_isstring(L, 2)) {
printf("%s: argument 1 is not a string.\n",__func__);
lua_pushboolean(L, false);
return 1;
}
const char *file = luaL_checkstring(L, 2);
bool ret = true;
lua_Debug ar;
@@ -242,9 +245,12 @@ int CLuaInstFileHelpers::FileHelpersRmdir(lua_State *L)
lua_pushboolean(L, false);
return 1;
}
const char *dir = "";
dir = luaL_checkstring(L, 2);
if (!lua_isstring(L, 2)) {
printf("%s: argument 1 is not a string.\n",__func__);
lua_pushboolean(L, false);
return 1;
}
const char *dir = luaL_checkstring(L, 2);
bool ret = false;
CFileHelpers* fh = CFileHelpers::getInstance();
@@ -276,9 +282,12 @@ int CLuaInstFileHelpers::FileHelpersMkdir(lua_State *L)
lua_pushboolean(L, false);
return 1;
}
const char *dir = "";
dir = luaL_checkstring(L, 2);
if (!lua_isstring(L, 2)) {
printf("%s: argument 1 is not a string.\n",__func__);
lua_pushboolean(L, false);
return 1;
}
const char *dir = luaL_checkstring(L, 2);
mode_t mode = 0755;
if (numargs > min_numargs) {
@@ -319,9 +328,12 @@ int CLuaInstFileHelpers::FileHelpersReadlink(lua_State *L)
lua_pushnil(L);
return 1;
}
const char *link = "";
link = luaL_checkstring(L, 2);
if (!lua_isstring(L, 2)) {
printf("%s: argument 1 is not a string.\n",__func__);
lua_pushboolean(L, false);
return 1;
}
const char *link = luaL_checkstring(L, 2);
char buf[PATH_MAX];
memset(buf, '\0', sizeof(buf));
@@ -353,16 +365,23 @@ int CLuaInstFileHelpers::FileHelpersLn(lua_State *L)
lua_pushboolean(L, false);
return 1;
}
const char *src = "";
src = luaL_checkstring(L, 2);
const char *link = "";
link = luaL_checkstring(L, 3);
if (!lua_isstring(L, 2) || !lua_isstring(L, 3)) {
printf("%s: argument 1 or 2 is not a string.\n",__func__);
lua_pushboolean(L, false);
return 1;
}
const char *src = luaL_checkstring(L, 2);
const char *link = luaL_checkstring(L, 3);
const char *flags = "";
if (numargs > min_numargs)
if (numargs > min_numargs){
if (!lua_isstring(L, 4)) {
printf("%s: argument 3 is not a string.\n",__func__);
lua_pushboolean(L, false);
return 1;
}
flags = luaL_checkstring(L, 4);
}
bool symlnk = (strchr(flags, 's') != NULL);
bool force = (strchr(flags, 'f') != NULL);
lua_Debug ar;
@@ -413,15 +432,18 @@ int CLuaInstFileHelpers::FileHelpersExist(lua_State *L)
return 1;
}
if (!lua_isstring(L, 2) || !lua_isstring(L, 3)) {
printf("%s: argument 1 or 2 is not a string.\n",__func__);
lua_pushboolean(L, false);
return 1;
}
bool ret = false;
bool err = false;
int errLine = 0;
std::string errMsg = "";
const char *file = "";
file = luaL_checkstring(L, 2);
const char *flag = "";
flag = luaL_checkstring(L, 3);
const char *file = luaL_checkstring(L, 2);
const char *flag = luaL_checkstring(L, 3);
if (file_exists(file)) {
struct stat FileInfo;