Mercurial > vim
view src/json_test.c @ 33776:9503dc55b5ed v9.0.2108
patch 9.0.2108: [security]: overflow with count for :s command
Commit: https://github.com/vim/vim/commit/ac63787734fda2e294e477af52b3bd601517fa78
Author: Christian Brabandt <cb@256bit.org>
Date: Tue Nov 14 20:45:48 2023 +0100
patch 9.0.2108: [security]: overflow with count for :s command
Problem: [security]: overflow with count for :s command
Solution: Abort the :s command if the count is too large
If the count after the :s command is larger than what fits into a
(signed) long variable, abort with e_value_too_large.
Adds a test with INT_MAX as count and verify it correctly fails.
It seems the return value on Windows using mingw compiler wraps around,
so the initial test using :s/./b/9999999999999999999999999990 doesn't
fail there, since the count is wrapping around several times and finally
is no longer larger than 2147483647. So let's just use 2147483647 in the
test, which hopefully will always cause a failure
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Thu, 16 Nov 2023 22:15:10 +0100 |
parents | f41b55f9357c |
children |
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/* vi:set ts=8 sts=4 sw=4 noet: * * VIM - Vi IMproved by Bram Moolenaar * * Do ":help uganda" in Vim to read copying and usage conditions. * Do ":help credits" in Vim to see a list of people who contributed. * See README.txt for an overview of the Vim source code. */ /* * json_test.c: Unittests for json.c */ #undef NDEBUG #include <assert.h> // Must include main.c because it contains much more than just main() #define NO_VIM_MAIN #include "main.c" // This file has to be included because the tested functions are static #include "json.c" #if defined(FEAT_EVAL) /* * Test json_find_end() with incomplete items. */ static void test_decode_find_end(void) { js_read_T reader; reader.js_fill = NULL; reader.js_used = 0; // string and incomplete string reader.js_buf = (char_u *)"\"hello\""; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)" \"hello\" "; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)"\"hello"; assert(json_find_end(&reader, 0) == MAYBE); // number and dash (incomplete number) reader.js_buf = (char_u *)"123"; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)"-"; assert(json_find_end(&reader, 0) == MAYBE); // false, true and null, also incomplete reader.js_buf = (char_u *)"false"; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)"f"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"fa"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"fal"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"fals"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"true"; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)"t"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"tr"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"tru"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"null"; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)"n"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"nu"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"nul"; assert(json_find_end(&reader, 0) == MAYBE); // object without white space reader.js_buf = (char_u *)"{\"a\":123}"; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)"{\"a\":123"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"{\"a\":"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"{\"a\""; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"{\"a"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"{\""; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"{"; assert(json_find_end(&reader, 0) == MAYBE); // object with white space reader.js_buf = (char_u *)" { \"a\" : 123 } "; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)" { \"a\" : 123 "; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)" { \"a\" : "; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)" { \"a\" "; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)" { \"a "; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)" { "; assert(json_find_end(&reader, 0) == MAYBE); // JS object with white space reader.js_buf = (char_u *)" { a : 123 } "; assert(json_find_end(&reader, JSON_JS) == OK); reader.js_buf = (char_u *)" { a : "; assert(json_find_end(&reader, JSON_JS) == MAYBE); // array without white space reader.js_buf = (char_u *)"[\"a\",123]"; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)"[\"a\",123"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"[\"a\","; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"[\"a\""; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"[\"a"; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"[\""; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)"["; assert(json_find_end(&reader, 0) == MAYBE); // array with white space reader.js_buf = (char_u *)" [ \"a\" , 123 ] "; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)" [ \"a\" , 123 "; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)" [ \"a\" , "; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)" [ \"a\" "; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)" [ \"a "; assert(json_find_end(&reader, 0) == MAYBE); reader.js_buf = (char_u *)" [ "; assert(json_find_end(&reader, 0) == MAYBE); } static int fill_from_cookie(js_read_T *reader) { reader->js_buf = reader->js_cookie; return TRUE; } /* * Test json_find_end with an incomplete array, calling the fill function. */ static void test_fill_called_on_find_end(void) { js_read_T reader; reader.js_fill = fill_from_cookie; reader.js_used = 0; reader.js_buf = (char_u *)" [ \"a\" , 123 "; reader.js_cookie = " [ \"a\" , 123 ] "; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)" [ \"a\" , "; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)" [ \"a\" "; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)" [ \"a"; assert(json_find_end(&reader, 0) == OK); reader.js_buf = (char_u *)" [ "; assert(json_find_end(&reader, 0) == OK); } /* * Test json_find_end with an incomplete string, calling the fill function. */ static void test_fill_called_on_string(void) { js_read_T reader; reader.js_fill = fill_from_cookie; reader.js_used = 0; reader.js_buf = (char_u *)" \"foo"; reader.js_end = reader.js_buf + STRLEN(reader.js_buf); reader.js_cookie = " \"foobar\" "; assert(json_decode_string(&reader, NULL, '"') == OK); } #endif int main(void) { #if defined(FEAT_EVAL) test_decode_find_end(); test_fill_called_on_find_end(); test_fill_called_on_string(); #endif return 0; }