int lua_panic_function(lua_State *state){
std::stringstream stream;
stream << "Lua threw an error: " << lua_tostring(state, -1);
auto interpreter = get_interpreter(state);
interpreter->message_box(nullptr, stream.str().c_str(), true);
throw LuaStackUnwind();
return 0;
}
void handle_call_to_c_error(lua_State *state, const char *function, const char *msg){
lua_Debug debug;
lua_getstack(state, 1, &debug);
lua_getinfo(state, "nSl", &debug);
int line = debug.currentline;
std::stringstream stream;
stream << "ERROR at line " << line << " calling function " << function << "(): " << msg;
auto interpreter = get_interpreter(state);
interpreter->message_box("Error executing Lua script.", stream.str().c_str(), true);
}
parse_errors_e fnc_unconditional_branching::execute_gotoline()
{
static const int PAR_LINENO = 1;
interpreter_t *_int = get_interpreter();
long lineno = compel_string_tokenizer_t::parse_number(_int->evaluate_at(PAR_LINENO));
if (lineno > 0)
lineno--;
else
return parse_stop_parsing;
_int->set_cur_src_line(lineno);
return parse_branch_to;
}
parse_errors_e fnc_unconditional_branching::execute_goto()
{
interpreter_t *_int = get_interpreter();
const char *labelname = _int->get_const_at(1);
if (!_int->is_variable_name(labelname))
return parse_error_variable_expected;
// check if label already defined
// if not so, then error!
value_t *val = _int->get_value_at(1);
if (val == 0)
return parse_error_symbol_not_in_table;
_int->set_cur_src_line(val->get_int_value());
return parse_branch_to;
}
parse_errors_e fnc_binary_arith::execute_expr()
{
interpreter_t *_int = get_interpreter();
value_t *var_dest = _int->get_value_at(1);
if (var_dest == 0)
return parse_error_symbol_not_in_table;
long r;
std::string expr;
function_helper::eval_from_to(_int, 2, _int->get_fnc_arg_count(), expr, false, 0);
if (ExpressionEvaluator::calculateLong(expr, r) != ExpressionEvaluator::eval_ok)
return parse_error_wrong_syntax;
var_dest->set_int_value(r);
return parse_error_none;
}
parse_errors_e fnc_unconditional_branching::prepare(size_t passno, int &start_or_failing_line)
{
if (passno != cc_nbpasses)
return parse_error_none;
interpreter_t *_int = get_interpreter();
interpreter_helper_t inthlp(_int);
lines_container_type_t &lines = inthlp.get_interpreter_lines().get_string_list();
compel_string_tokenizer_t slp;
lines_container_type_t::iterator it = lines.begin();
size_t lineno = start_or_failing_line;
std::advance(it, lineno);
for (;
it != lines.end();++it, lineno++)
{
std::string &line = *it;
size_t pcount = slp.parse(line.c_str());
if (pcount <= 1)
continue;
if (stricmp(slp.get_string(0), s_cmd_label) != 0)
continue;
parse_errors_e err = _int->interpreter_line_at(lineno);
if (err != parse_error_none)
{
start_or_failing_line = (int) lineno;
return err;
}
}
return parse_error_none;
}
parse_errors_e fnc_com::execute_free()
{
static const int PAR_OBJ = 1;
interpreter_t *_int = get_interpreter();
// Is it a variable name?
const char *objname = _int->get_const_at(PAR_OBJ);
if (!_int->is_variable_name(objname))
return parse_error_variable_expected;
// Does the object exist?
com_object_t *obj = dynamic_cast<com_object_t *>(_int->find_symbol(objname));
if (obj == 0)
{
return parse_error_symbol_type_mismatch;
}
_int->remove_symbol(objname);
return parse_error_none;
}
parse_errors_e fnc_com::execute_create()
{
static const int PAR_OBJ = 1;
static const int PAR_PROGID = 2;
static const int PAR_CLSCTX = 3;
interpreter_t *_int = get_interpreter();
// Is it a variable name?
const char *objname = _int->get_const_at(PAR_OBJ);
if (!_int->is_variable_name(objname))
return parse_error_variable_expected;
// Does the object exist?
object_t *obj = dynamic_cast<object_t *>(_int->find_symbol(objname));
if (obj == 0)
{
obj = new com_object_t;
_int->add_symbol(objname, obj);
}
// Correct object kind?
else if (obj->get_obj_kind() != object_com)
{
return parse_error_symbol_type_mismatch;
}
// Get COM OBJECT
com_object_t *comobj = dynamic_cast<com_object_t *>(obj);
if (_int->get_fnc_arg_count() > PAR_CLSCTX)
{
comobj->_attr_clsctx->set_str_value(_int->evaluate_at(PAR_CLSCTX));
}
comobj->create((char *)_int->evaluate_at(PAR_PROGID));
return parse_error_none;
}
parse_errors_e fnc_binary_arith::execute()
{
if (_op == ba_expr)
return execute_expr();
interpreter_t *_int = get_interpreter();
value_t *var_dest = _int->get_value_at(1);
if (var_dest == 0)
return parse_error_symbol_not_in_table;
long n_src = compel_string_tokenizer_t::parse_number(_int->evaluate_at(2));
long n_dest = var_dest->get_int_value();
long result;
switch (_op)
{
case ba_sub:
result = n_dest - n_src;
break;
case ba_mul:
result = n_dest * n_src;
break;
case ba_div:
if (n_dest == 0)
return parse_error_divide_by_zero_detected;
result = n_src / n_dest;
case ba_add:
result = n_src + n_dest;
break;
}
var_dest->set_int_value(result);
return parse_error_none;
}
PyObject *install(PyObject *s, PyObject *arg) {
Tcl_Interp *trp = get_interpreter(arg);
if(!trp) {
PyErr_SetString(PyExc_TypeError, "get_interpreter() returned NULL");
return NULL;
}
if (Tcl_InitStubs(trp, "8.1", 0) == NULL)
{
PyErr_SetString(PyExc_RuntimeError, "Tcl_InitStubs returned NULL");
return NULL;
}
if (Tk_InitStubs(trp, "8.1", 0) == NULL)
{
PyErr_SetString(PyExc_RuntimeError, "Tk_InitStubs returned NULL");
return NULL;
}
if (Tcl_PkgPresent(trp, "Togl", TOGL_VERSION, 0)) {
Py_INCREF(Py_None);
return Py_None;
}
if (Tcl_PkgProvide(trp, "Togl", TOGL_VERSION) != TCL_OK) {
PyErr_Format(PyExc_RuntimeError, "Tcl_PkgProvide failed: %s", Tcl_GetStringResult(trp));
return NULL;
}
Tcl_CreateCommand(trp, "togl", (Tcl_CmdProc *)Togl_Cmd,
(ClientData) Tk_MainWindow(trp), NULL);
if(first_time) {
Tcl_InitHashTable(&CommandTable, TCL_STRING_KEYS);
first_time = 0;
}
Py_INCREF(Py_None);
return Py_None;
}
parse_errors_e fnc_unconditional_branching::execute_label()
{
interpreter_t *_int = get_interpreter();
const char *labelname = _int->get_const_at(1);
if (!_int->is_variable_name(labelname))
return parse_error_variable_expected;
size_t curlineno = _int->get_cur_source_lineno();
if (_int->is_deferred_line())
{
int deferredline = _int->find_deferred_line();
if (deferredline != -1)
{
parse_errors_e err = _int->interpreter_line_at(deferredline);
_int->void_line(curlineno);
return err;
}
}
// check if label already defined
// set mark label starting at next line
// ;! beware: setting a label at the end of file!
// ;! beware: if someone branches to a location above the label definition
value_t *newval = new value_t((long)curlineno+1);
symbol_t *sym = _int->add_symbol(labelname, newval);
if (sym == 0)
{
delete newval;
return parse_error_symbol_redefinition;
}
_int->void_line(curlineno);
return parse_error_none;
}
/**
This function is executed by the child process created by a call to
fork(). It should be called after \c setup_child_process. It calls
execve to replace the fish process image with the command specified
in \c p. It never returns.
*/
static void launch_process( process_t *p )
{
FILE* f;
int err;
// debug( 1, L"exec '%ls'", p->argv[0] );
char **argv = wcsv2strv( (const wchar_t **) p->argv);
char **envv = env_export_arr( 0 );
execve ( wcs2str(p->actual_cmd),
argv,
envv );
err = errno;
/*
Something went wrong with execve, check for a ":", and run
/bin/sh if encountered. This is a weird predecessor to the shebang
that is still sometimes used since it is supported on Windows.
*/
f = wfopen(p->actual_cmd, "r");
if( f )
{
char begin[1] = {0};
size_t read;
read = fread(begin, 1, 1, f);
fclose( f );
if( (read==1) && (begin[0] == ':') )
{
int count = 0;
int i = 1;
wchar_t **res;
char **res_real;
while( p->argv[count] != 0 )
count++;
res = malloc( sizeof(wchar_t*)*(count+2));
res[0] = L"/bin/sh";
res[1] = p->actual_cmd;
for( i=1; p->argv[i]; i++ ){
res[i+1] = p->argv[i];
}
res[i+1] = 0;
p->argv = res;
p->actual_cmd = L"/bin/sh";
res_real = wcsv2strv( (const wchar_t **) res);
execve ( wcs2str(p->actual_cmd),
res_real,
envv );
}
}
errno = err;
debug( 0,
_( L"Failed to execute process '%ls'. Reason:" ),
p->actual_cmd );
switch( errno )
{
case E2BIG:
{
size_t sz = 0;
char **p;
string_buffer_t sz1;
string_buffer_t sz2;
long arg_max = -1;
sb_init( &sz1 );
sb_init( &sz2 );
for(p=argv; *p; p++)
{
sz += strlen(*p)+1;
}
for(p=envv; *p; p++)
{
sz += strlen(*p)+1;
}
sb_format_size( &sz1, sz );
arg_max = sysconf( _SC_ARG_MAX );
if( arg_max > 0 )
{
sb_format_size( &sz2, arg_max );
debug( 0,
L"The total size of the argument and environment lists (%ls) exceeds the operating system limit of %ls.",
(wchar_t *)sz1.buff,
(wchar_t *)sz2.buff);
}
else
{
debug( 0,
L"The total size of the argument and environment lists (%ls) exceeds the operating system limit.",
(wchar_t *)sz1.buff);
}
debug( 0,
L"Try running the command again with fewer arguments.");
sb_destroy( &sz1 );
sb_destroy( &sz2 );
exit(STATUS_EXEC_FAIL);
break;
}
case ENOEXEC:
{
wperror(L"exec");
debug(0, L"The file '%ls' is marked as an executable but could not be run by the operating system.", p->actual_cmd);
exit(STATUS_EXEC_FAIL);
}
case ENOENT:
{
wchar_t *interpreter = get_interpreter( p->actual_cmd );
if( interpreter && waccess( interpreter, X_OK ) )
{
debug(0, L"The file '%ls' specified the interpreter '%ls', which is not an executable command.", p->actual_cmd, interpreter );
}
else
{
debug(0, L"The file '%ls' or a script or ELF interpreter does not exist, or a shared library needed for file or interpreter cannot be found.", p->actual_cmd);
}
exit(STATUS_EXEC_FAIL);
}
case ENOMEM:
{
debug(0, L"Out of memory");
exit(STATUS_EXEC_FAIL);
}
default:
{
wperror(L"exec");
// debug(0, L"The file '%ls' is marked as an executable but could not be run by the operating system.", p->actual_cmd);
exit(STATUS_EXEC_FAIL);
}
}
}
static int
interpret_extensions(uchar_t *ext,
int regext_size,
enum EXT_TYPE etype) {
int curr_size = regext_size; /* remaining total for all exts */
exthdr_t *exthdr;
gen_exthdr_t *gen_exthdr;
const char *st;
uchar_t *p;
interpreter_f *f;
uint8_t ext_type;
uint16_t ext_len;
uint_t ext_hdrlen;
show_space();
exthdr = (exthdr_t *)ALIGN(ext);
do {
ext_type = exthdr->type;
if (ext_type == GEN_AUTH) {
gen_exthdr = (gen_exthdr_t *)exthdr;
ext_hdrlen = sizeof (gen_exthdr_t);
ext_len = ntohs(gen_exthdr->length);
} else {
ext_hdrlen = sizeof (exthdr_t);
ext_len = exthdr->length;
}
if (!((etype == ADV && ext_type == ICMP_ADV_MSG_PADDING_EXT &&
curr_size >= 1) ||
curr_size >= ext_hdrlen + ext_len))
break;
/* Print description for this extension */
if (etype == ADV) {
st = get_desc(adv_desc, ext_type, ADV_TBL_LEN);
} else /* REG */ {
st = get_desc(reg_desc, ext_type, REG_TBL_LEN);
}
(void) sprintf(get_line((char *)exthdr-dlc_header, 1),
"Extension header type = %d %s", ext_type, st);
if (ext_type == GEN_AUTH) {
st = get_desc(genauth_desc, gen_exthdr->subtype,
GENAUTH_TBL_LEN);
(void) sprintf(get_line((char *)exthdr-dlc_header, 1),
"Subtype = %d %s", gen_exthdr->subtype, st);
}
/* Special case for 1-byte padding */
if (etype == ADV && ext_type == ICMP_ADV_MSG_PADDING_EXT) {
exthdr = (exthdr_t *)((uchar_t *)exthdr + 1);
curr_size--;
continue;
}
(void) sprintf(get_line((char *)&exthdr->length-dlc_header, 1),
"Length = %d", ext_len);
/* Parse out the extension's payload */
p = (uchar_t *)exthdr + ext_hdrlen;
curr_size -= (ext_hdrlen + ext_len);
if (etype == ADV) {
f = get_interpreter(adv_dispatch, ext_type, ADV_TBL_LEN);
} else /* REG */ {
f = get_interpreter(reg_dispatch, ext_type, REG_TBL_LEN);
}
f(ext_type, ext_len, p);
show_space();
exthdr = (exthdr_t *)(p + ext_len);
} while (B_TRUE);
return (0);
}
void safe_report_exec_error(int err, const char *actual_cmd, const char *const *argv,
const char *const *envv) {
debug_safe(0, "Failed to execute process '%s'. Reason:", actual_cmd);
switch (err) {
case E2BIG: {
char sz1[128], sz2[128];
long arg_max = -1;
size_t sz = 0;
const char *const *p;
for (p = argv; *p; p++) {
sz += strlen(*p) + 1;
}
for (p = envv; *p; p++) {
sz += strlen(*p) + 1;
}
format_size_safe(sz1, sz);
arg_max = sysconf(_SC_ARG_MAX);
if (arg_max > 0) {
format_size_safe(sz2, static_cast<unsigned long long>(arg_max));
debug_safe(0,
"The total size of the argument and environment lists %s exceeds the "
"operating system limit of %s.",
sz1, sz2);
} else {
debug_safe(0,
"The total size of the argument and environment lists (%s) exceeds the "
"operating system limit.",
sz1);
}
debug_safe(0, "Try running the command again with fewer arguments.");
break;
}
case ENOEXEC: {
const char *err = safe_strerror(errno);
debug_safe(0, "exec: %s", err);
debug_safe(0,
"The file '%s' is marked as an executable but could not be run by the "
"operating system.",
actual_cmd);
break;
}
case ENOENT: {
// ENOENT is returned by exec() when the path fails, but also returned by posix_spawn if
// an open file action fails. These cases appear to be impossible to distinguish. We
// address this by not using posix_spawn for file redirections, so all the ENOENTs we
// find must be errors from exec().
char interpreter_buff[128] = {}, *interpreter;
interpreter = get_interpreter(actual_cmd, interpreter_buff, sizeof interpreter_buff);
if (interpreter && 0 != access(interpreter, X_OK)) {
debug_safe(0,
"The file '%s' specified the interpreter '%s', which is not an "
"executable command.",
actual_cmd, interpreter);
} else {
debug_safe(0, "The file '%s' does not exist or could not be executed.", actual_cmd);
}
break;
}
case ENOMEM: {
debug_safe(0, "Out of memory");
break;
}
default: {
const char *err = safe_strerror(errno);
debug_safe(0, "exec: %s", err);
// debug(0, L"The file '%ls' is marked as an executable but could not be run by the
// operating system.", p->actual_cmd);
break;
}
}
}
parse_errors_e fnc_binary_comparison::execute()
{
static const int PAR_OPR1 = 1;
static const int PAR_OPR2 = 2;
static const int PAR_ACTION = 3;
interpreter_t *_int = get_interpreter();
const char *symname = _int->get_const_at(PAR_ACTION);
bool bBranch;
bBranch = do_comparison(_int, _op, PAR_OPR1, PAR_OPR2);
if (!bBranch)
return parse_error_none;
// Label?
if (_int->is_variable_name(symname))
{
// check if label already defined, if not so then error!
value_t *val = _int->get_value_at(PAR_ACTION);
if (val == 0)
return parse_error_symbol_not_in_table;
if (bBranch)
{
// branch!
_int->set_cur_src_line(val->get_int_value());
return parse_branch_to;
}
}
if (function_t *fnc = _int->get_function(symname))
{
// we need a helper
interpreter_helper_t helper(_int);
// save old tokenizer
compel_string_tokenizer_t *old_tokenizer = helper.get_tokenizer();
// create new tokenizer for the action passed to the if_xx
compel_string_tokenizer_t new_tokenizer;
// get the action
const char *action_str = old_tokenizer->join_from(PAR_ACTION);
// parse the action
new_tokenizer.parse(action_str);
// set new tokenizer (temp)
helper.set_tokenizer(&new_tokenizer);
// execute the function
parse_errors_e err = fnc->execute();
// restore old tokenizer
helper.set_tokenizer(old_tokenizer);
return err;
}
else
return parse_error_function_expected;
// do not branch, execute next line
return parse_error_none;
}
