/*
* Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/queue.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <err.h>
#include <unistd.h>
#include "got_error.h"
#include "got_opentemp.h"
#include "got_lib_delta.h"
#include "got_lib_path.h"
#ifndef nitems
#define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
#endif
struct delta_test {
const char *base;
size_t base_len;
const char *delta;
size_t delta_len;
const char *expected;
size_t result_len;
} delta_tests[] = {
/* base len 0, target len 4, append 4 'x' */
{ "", 0, "\x00\x04\x04xxxx", 7, "xxxx", 4 },
/* copy 4 bytes at offset 0 from base, append 4 'x' */
{ "aabbccdd", 8, "\x08\x08\x90\x04\x04xxxx", 9, "aabbxxxx", 8 },
/* copy 4 bytes at offset 4 from base, append 4 'x' */
{ "aabbccdd", 8, "\x08\x08\x91\x04\x04\x04xxxx", 10, "ccddxxxx", 8 },
/* git 48fb7deb5 Fix big left-shifts of unsigned char, 2009-06-17) */
{ "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
16, "\x10\x10\xff\xff\xff\xff\xff\x10\00\00", 10 , NULL, 0 },
/* libgit2 9844d38be delta: fix out-of-bounds read of delta */
{ "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
16, "\x10\x70\xff", 3, NULL, 0}
};
static int
delta_apply(void)
{
const struct got_error *err = NULL;
int i;
FILE *result_file;
result_file = got_opentemp();
if (result_file == NULL)
return 1;
for (i = 0; i < nitems(delta_tests); i++) {
struct delta_test *dt = &delta_tests[i];
FILE *base_file;
char buf[1024];
size_t n, result_len;
base_file = got_opentemp();
if (base_file == NULL) {
err = got_error_from_errno();
break;
}
n = fwrite(dt->base, 1, dt->base_len, base_file);
if (n != dt->base_len) {
err = got_ferror(base_file, GOT_ERR_IO);
break;
}
rewind(base_file);
err = got_delta_apply(base_file, dt->delta, dt->delta_len,
result_file, &result_len);
fclose(base_file);
if (dt->expected == NULL) {
/* Invalid delta, expect an error. */
if (err == NULL)
err = got_error(GOT_ERR_EXPECTED);
else if (err->code == GOT_ERR_BAD_DELTA)
err = NULL;
} else {
if (err)
break;
if (result_len != dt->result_len) {
err = got_ferror(result_file,
GOT_ERR_BAD_DELTA);
break;
}
n = fread(buf, result_len, 1, result_file);
if (n != 1 ||
strncmp(buf, dt->expected, result_len) != 0) {
err = got_ferror(result_file,
GOT_ERR_BAD_DELTA);
break;
}
}
rewind(result_file);
}
fclose(result_file);
return (err == NULL);
}
#define RUN_TEST(expr, name) \
{ test_ok = (expr); \
printf("test_%s %s\n", (name), test_ok ? "ok" : "failed"); \
failure = (failure || !test_ok); }
int
main(int argc, const char *argv[])
{
int test_ok;
int failure = 0;
if (argc != 1) {
fprintf(stderr, "usage: delta_test [REPO_PATH]\n");
return 1;
}
#ifndef PROFILE
if (pledge("stdio rpath wpath cpath unveil", NULL) == -1)
err(1, "pledge");
#endif
if (unveil("/tmp", "rwc") != 0)
err(1, "unveil");
if (unveil(NULL, NULL) != 0)
err(1, "unveil");
RUN_TEST(delta_apply(), "delta_apply");
return failure ? 1 : 0;
}
