mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-23 05:42:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Make C memory safe like Rust

Browse source 
This change enables Address Sanitizer systemically w/ `make MODE=dbg`.
Our version of Rust's `unsafe` keyword is named `noasan` which is used
for two functions that do aligned memory chunking, like `strcpy.c` and
we need to fix the tiny DEFLATE code, but that's it everything else is
fabulous you can have all the fischer price security blankets you need

Best of all is we're now able to use the ASAN data in Blinkenlights to
colorize the memory dumps. See the screenshot below of a test program:

  https://justine.lol/blinkenlights/asan.png

Which is operating on float arrays stored on the stack, with red areas
indicating poisoned memory, and the green areas indicate valid memory.
This commit is contained in:
Justine Tunney 2021-02-01 03:33:13 -08:00
parent fdc3fa9148
commit 1ff9ab95ac
153 changed files with 2545 additions and 2077 deletions
Download patch file Download diff file Expand all files Collapse all files

89
test/libc/runtime/getdosargv_test.c
View file

@ -16,76 +16,77 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/mem/mem.h"
#include "libc/runtime/internal.h"
#include "libc/testlib/testlib.h"
TEST(GetDosArgv, empty) {
size_t max = 4;
size_t size = ARG_MAX;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(0, GetDosArgv(u"", buf, size, argv, max));
EXPECT_EQ(NULL, argv[0]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}
TEST(GetDosArgv, emptyish) {
size_t max = 4;
size_t size = ARG_MAX;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(0, GetDosArgv(u" ", buf, size, argv, max));
EXPECT_EQ(NULL, argv[0]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}
TEST(GetDosArgv, basicUsage) {
size_t max = 4;
size_t size = ARG_MAX;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(3, GetDosArgv(u"a\t \"b c\" d ", buf, size, argv, max));
EXPECT_STREQ("a", argv[0]);
EXPECT_STREQ("b c", argv[1]);
EXPECT_STREQ("d", argv[2]);
EXPECT_EQ(NULL, argv[3]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}
TEST(GetDosArgv, advancedUsage) {
size_t max = 4;
size_t size = ARG_MAX;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(2, GetDosArgv(u"(╯°□°)╯︵ ┻━┻", buf, size, argv, max));
EXPECT_STREQ("(╯°□°)╯︵", argv[0]);
EXPECT_STREQ("┻━┻", argv[1]);
EXPECT_EQ(NULL, argv[2]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}
TEST(GetDosArgv, testAegeanGothicSupplementaryPlanes) {
size_t max = 4; /* these symbols are almost as old as dos */
size_t size = ARG_MAX;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(2, GetDosArgv(u"𐄷𐄸𐄹𐄺𐄻𐄼 𐌰𐌱𐌲𐌳𐌴𐌵𐌶𐌷", buf, size, argv, max));
EXPECT_STREQ("𐄷𐄸𐄹𐄺𐄻𐄼", argv[0]);
EXPECT_STREQ("𐌰𐌱𐌲𐌳𐌴𐌵𐌶𐌷", argv[1]);
EXPECT_EQ(NULL, argv[2]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}
TEST(GetDosArgv, realWorldUsage) {
size_t max = 512;
size_t size = ARG_MAX;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(5, GetDosArgv(u"C:\\Users\\jtunn\\printargs.com oh yes yes yes",
buf, size, argv, max));
EXPECT_STREQ("C:\\Users\\jtunn\\printargs.com", argv[0]);
@ -94,21 +95,21 @@ TEST(GetDosArgv, realWorldUsage) {
EXPECT_STREQ("yes", argv[3]);
EXPECT_STREQ("yes", argv[4]);
EXPECT_EQ(NULL, argv[5]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}
TEST(GetDosArgv, bufferOverrun_countIsStillAccurate_truncatesMemoryWithGrace) {
size_t max = 3;
size_t size = 7;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(3, GetDosArgv(u"a\t \"b c\" d ", buf, size, argv, max));
EXPECT_STREQ("a", argv[0]);
EXPECT_STREQ("b c", argv[1]);
EXPECT_EQ(NULL, argv[2]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}
TEST(GetDosArgv, pureScanningMode) {
@ -121,50 +122,50 @@ TEST(GetDosArgv, pureScanningMode) {
TEST(GetDosArgv, justSlashQuote) {
size_t max = 4, size = 16;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(1, GetDosArgv(u"\"\\\\\\\"\"", buf, size, argv, max));
EXPECT_STREQ("\\\"", argv[0]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}
TEST(GetDosArgv, quoteInMiddleOfArg_wontSplitArg) {
size_t max = 4, size = 16;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(1, GetDosArgv(u"hi\"\"there", buf, size, argv, max));
EXPECT_STREQ("hithere", argv[0]);
max = 4, size = 16;
EXPECT_EQ(1, GetDosArgv(u"hi\" \"there", buf, size, argv, max));
EXPECT_STREQ("hi there", argv[0]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}
TEST(GetDosArgv, waqQuoting1) {
size_t max = 4;
size_t size = ARG_MAX;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(2,
GetDosArgv(u"a\\\\\"\"\"\"\"\"\"\"b c\" d", buf, size, argv, max));
EXPECT_STREQ("a\\\"\"b", argv[0]);
EXPECT_STREQ("c d", argv[1]);
EXPECT_EQ(NULL, argv[2]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}
TEST(GetDosArgv, waqQuoting2) {
size_t max = 4;
size_t size = ARG_MAX;
char *buf = tmalloc(size * sizeof(char));
char **argv = tmalloc(max * sizeof(char *));
char *buf = malloc(size * sizeof(char));
char **argv = malloc(max * sizeof(char *));
EXPECT_EQ(2, GetDosArgv(u"\"a\\\"b c\" d", buf, size, argv, max));
EXPECT_STREQ("a\"b c", argv[0]);
EXPECT_STREQ("d", argv[1]);
EXPECT_EQ(NULL, argv[2]);
tfree(argv);
tfree(buf);
free(argv);
free(buf);
}