diff options
| -rw-r--r-- | Lib/test/test_tcl.py | 27 | ||||
| -rw-r--r-- | Misc/NEWS | 3 | ||||
| -rw-r--r-- | Modules/_tkinter.c | 36 |
3 files changed, 64 insertions, 2 deletions
diff --git a/Lib/test/test_tcl.py b/Lib/test/test_tcl.py index c226233..b0b2729 100644 --- a/Lib/test/test_tcl.py +++ b/Lib/test/test_tcl.py @@ -557,10 +557,35 @@ class BigmemTclTest(unittest.TestCase): @support.cpython_only @unittest.skipUnless(INT_MAX < PY_SSIZE_T_MAX, "needs UINT_MAX < SIZE_MAX") @support.bigmemtest(size=INT_MAX + 1, memuse=5, dry_run=False) - def test_huge_string(self, size): + def test_huge_string_call(self, size): value = ' ' * size self.assertRaises(OverflowError, self.interp.call, 'set', '_', value) + @support.cpython_only + @unittest.skipUnless(INT_MAX < PY_SSIZE_T_MAX, "needs UINT_MAX < SIZE_MAX") + @support.bigmemtest(size=INT_MAX + 1, memuse=9, dry_run=False) + def test_huge_string_builtins(self, size): + value = '1' + ' ' * size + self.assertRaises(OverflowError, self.interp.getint, value) + self.assertRaises(OverflowError, self.interp.getdouble, value) + self.assertRaises(OverflowError, self.interp.getboolean, value) + self.assertRaises(OverflowError, self.interp.eval, value) + self.assertRaises(OverflowError, self.interp.evalfile, value) + self.assertRaises(OverflowError, self.interp.record, value) + self.assertRaises(OverflowError, self.interp.adderrorinfo, value) + self.assertRaises(OverflowError, self.interp.setvar, value, 'x', 'a') + self.assertRaises(OverflowError, self.interp.setvar, 'x', value, 'a') + self.assertRaises(OverflowError, self.interp.unsetvar, value) + self.assertRaises(OverflowError, self.interp.unsetvar, 'x', value) + self.assertRaises(OverflowError, self.interp.adderrorinfo, value) + self.assertRaises(OverflowError, self.interp.exprstring, value) + self.assertRaises(OverflowError, self.interp.exprlong, value) + self.assertRaises(OverflowError, self.interp.exprboolean, value) + self.assertRaises(OverflowError, self.interp.splitlist, value) + self.assertRaises(OverflowError, self.interp.split, value) + self.assertRaises(OverflowError, self.interp.createcommand, value, max) + self.assertRaises(OverflowError, self.interp.deletecommand, value) + def setUpModule(): if support.verbose: @@ -18,6 +18,9 @@ Core and Builtins Library ------- +- Issue #21552: Fixed possible integer overflow of too long string lengths in + the tkinter module on 64-bit platforms. + - Issue #14315: The zipfile module now ignores extra fields in the central directory that are too short to be parsed instead of letting a struct.unpack error bubble up as this "bad data" appears in many real world zip files in diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c index af430fb..4a7b284 100644 --- a/Modules/_tkinter.c +++ b/Modules/_tkinter.c @@ -861,6 +861,16 @@ static PyType_Spec PyTclObject_Type_spec = { }; +#if PY_SIZE_MAX > INT_MAX +#define CHECK_STRING_LENGTH(s) do { \ + if (s != NULL && strlen(s) >= INT_MAX) { \ + PyErr_SetString(PyExc_OverflowError, "string is too long"); \ + return NULL; \ + } } while(0) +#else +#define CHECK_STRING_LENGTH(s) +#endif + static Tcl_Obj* AsObj(PyObject *value) { @@ -1279,6 +1289,7 @@ Tkapp_Eval(PyObject *self, PyObject *args) if (!PyArg_ParseTuple(args, "s:eval", &script)) return NULL; + CHECK_STRING_LENGTH(script); CHECK_TCL_APPARTMENT; ENTER_TCL @@ -1302,6 +1313,7 @@ Tkapp_EvalFile(PyObject *self, PyObject *args) if (!PyArg_ParseTuple(args, "s:evalfile", &fileName)) return NULL; + CHECK_STRING_LENGTH(fileName); CHECK_TCL_APPARTMENT; ENTER_TCL @@ -1322,9 +1334,10 @@ Tkapp_Record(PyObject *self, PyObject *args) PyObject *res = NULL; int err; - if (!PyArg_ParseTuple(args, "s", &script)) + if (!PyArg_ParseTuple(args, "s:record", &script)) return NULL; + CHECK_STRING_LENGTH(script); CHECK_TCL_APPARTMENT; ENTER_TCL @@ -1345,6 +1358,7 @@ Tkapp_AddErrorInfo(PyObject *self, PyObject *args) if (!PyArg_ParseTuple(args, "s:adderrorinfo", &msg)) return NULL; + CHECK_STRING_LENGTH(msg); CHECK_TCL_APPARTMENT; ENTER_TCL @@ -1528,6 +1542,8 @@ SetVar(PyObject *self, PyObject *args, int flags) if (!PyArg_ParseTuple(args, "ssO:setvar", &name1, &name2, &newValue)) return NULL; + CHECK_STRING_LENGTH(name1); + CHECK_STRING_LENGTH(name2); /* XXX must hold tcl lock already??? */ newval = AsObj(newValue); ENTER_TCL @@ -1573,6 +1589,7 @@ GetVar(PyObject *self, PyObject *args, int flags) varname_converter, &name1, &name2)) return NULL; + CHECK_STRING_LENGTH(name2); ENTER_TCL tres = Tcl_GetVar2Ex(Tkapp_Interp(self), name1, name2, flags); ENTER_OVERLAP @@ -1615,6 +1632,8 @@ UnsetVar(PyObject *self, PyObject *args, int flags) if (!PyArg_ParseTuple(args, "s|s:unsetvar", &name1, &name2)) return NULL; + CHECK_STRING_LENGTH(name1); + CHECK_STRING_LENGTH(name2); ENTER_TCL code = Tcl_UnsetVar2(Tkapp_Interp(self), name1, name2, flags); ENTER_OVERLAP @@ -1660,6 +1679,7 @@ Tkapp_GetInt(PyObject *self, PyObject *args) } if (!PyArg_ParseTuple(args, "s:getint", &s)) return NULL; + CHECK_STRING_LENGTH(s); if (Tcl_GetInt(Tkapp_Interp(self), s, &v) == TCL_ERROR) return Tkinter_Error(self); return Py_BuildValue("i", v); @@ -1680,6 +1700,7 @@ Tkapp_GetDouble(PyObject *self, PyObject *args) } if (!PyArg_ParseTuple(args, "s:getdouble", &s)) return NULL; + CHECK_STRING_LENGTH(s); if (Tcl_GetDouble(Tkapp_Interp(self), s, &v) == TCL_ERROR) return Tkinter_Error(self); return Py_BuildValue("d", v); @@ -1700,6 +1721,7 @@ Tkapp_GetBoolean(PyObject *self, PyObject *args) } if (!PyArg_ParseTuple(args, "s:getboolean", &s)) return NULL; + CHECK_STRING_LENGTH(s); if (Tcl_GetBoolean(Tkapp_Interp(self), s, &v) == TCL_ERROR) return Tkinter_Error(self); return PyBool_FromLong(v); @@ -1715,6 +1737,7 @@ Tkapp_ExprString(PyObject *self, PyObject *args) if (!PyArg_ParseTuple(args, "s:exprstring", &s)) return NULL; + CHECK_STRING_LENGTH(s); CHECK_TCL_APPARTMENT; ENTER_TCL @@ -1739,6 +1762,7 @@ Tkapp_ExprLong(PyObject *self, PyObject *args) if (!PyArg_ParseTuple(args, "s:exprlong", &s)) return NULL; + CHECK_STRING_LENGTH(s); CHECK_TCL_APPARTMENT; ENTER_TCL @@ -1762,6 +1786,7 @@ Tkapp_ExprDouble(PyObject *self, PyObject *args) if (!PyArg_ParseTuple(args, "s:exprdouble", &s)) return NULL; + CHECK_STRING_LENGTH(s); CHECK_TCL_APPARTMENT; PyFPE_START_PROTECT("Tkapp_ExprDouble", return 0) ENTER_TCL @@ -1786,6 +1811,7 @@ Tkapp_ExprBoolean(PyObject *self, PyObject *args) if (!PyArg_ParseTuple(args, "s:exprboolean", &s)) return NULL; + CHECK_STRING_LENGTH(s); CHECK_TCL_APPARTMENT; ENTER_TCL retval = Tcl_ExprBoolean(Tkapp_Interp(self), s, &v); @@ -1838,6 +1864,7 @@ Tkapp_SplitList(PyObject *self, PyObject *args) if (!PyArg_ParseTuple(args, "et:splitlist", "utf-8", &list)) return NULL; + CHECK_STRING_LENGTH(list); if (Tcl_SplitList(Tkapp_Interp(self), list, &argc, &argv) == TCL_ERROR) { PyMem_Free(list); @@ -1899,6 +1926,7 @@ Tkapp_Split(PyObject *self, PyObject *args) if (!PyArg_ParseTuple(args, "et:split", "utf-8", &list)) return NULL; + CHECK_STRING_LENGTH(list); v = Split(list); PyMem_Free(list); return v; @@ -2030,6 +2058,7 @@ Tkapp_CreateCommand(PyObject *selfptr, PyObject *args) if (!PyArg_ParseTuple(args, "sO:createcommand", &cmdName, &func)) return NULL; + CHECK_STRING_LENGTH(cmdName); if (!PyCallable_Check(func)) { PyErr_SetString(PyExc_TypeError, "command not callable"); return NULL; @@ -2091,6 +2120,7 @@ Tkapp_DeleteCommand(PyObject *selfptr, PyObject *args) if (!PyArg_ParseTuple(args, "s:deletecommand", &cmdName)) return NULL; + CHECK_STRING_LENGTH(cmdName); #ifdef WITH_THREAD if (self->threaded && self->thread_id != Tcl_GetCurrentThread()) { @@ -2782,6 +2812,10 @@ Tkinter_Create(PyObject *self, PyObject *args) &interactive, &wantobjects, &wantTk, &sync, &use)) return NULL; + CHECK_STRING_LENGTH(screenName); + CHECK_STRING_LENGTH(baseName); + CHECK_STRING_LENGTH(className); + CHECK_STRING_LENGTH(use); return (PyObject *) Tkapp_New(screenName, className, interactive, wantobjects, wantTk, |