/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Tests for statful_util functions.
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define _STUB_IMPLEMENTATION_ /* So we can use memset() ourselves */
#include "stateful_util.h"
#include "test_common.h"
#include "utility.h"
#include "vboot_common.h"
/* Test StatefulInit */
static void StatefulInitTest(void) {
MemcpyState s;
char buf[128];
memset(&s, 0, sizeof(s));
s.overrun = 1;
StatefulInit(&s, buf, 128);
TEST_EQ(0, s.overrun, "StatefulInit() overrun");
TEST_EQ(128, s.remaining_len, "StatefulInit() len");
TEST_PTR_EQ(buf, s.remaining_buf, "StatefulInit() buf");
}
/* Test StatefulSkip */
static void StatefulSkipTest(void) {
MemcpyState s;
char buf[128];
/* Small skip */
StatefulInit(&s, buf, 128);
TEST_PTR_EQ(&s, StatefulSkip(&s, 5), "StatefulSkip(5) retval");
TEST_EQ(128 - 5, s.remaining_len, "StatefulSkip(5) len");
TEST_PTR_EQ(buf + 5, s.remaining_buf, "StatefulSkip(5) buf");
TEST_EQ(0, s.overrun, "StatefulSkip(5) overrun");
/* Use entire buffer */
StatefulInit(&s, buf, 128);
TEST_PTR_EQ(&s, StatefulSkip(&s, 128), "StatefulSkip(all) retval");
TEST_EQ(0, s.remaining_len, "StatefulSkip(all) len");
TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulSkip(all) buf");
TEST_EQ(0, s.overrun, "StatefulSkip(all) overrun");
/* Zero-length skip is ok (but meaningless) */
TEST_PTR_EQ(&s, StatefulSkip(&s, 0), "StatefulSkip(0) retval");
TEST_EQ(0, s.remaining_len, "StatefulSkip(0) len");
TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulSkip(0) buf");
TEST_EQ(0, s.overrun, "StatefulSkip(0) overrun");
/* Can't use even one byte past that */
TEST_PTR_EQ(NULL, StatefulSkip(&s, 1), "StatefulSkip(+1) retval");
TEST_EQ(0, s.remaining_len, "StatefulSkip(+1) len");
TEST_EQ(1, s.overrun, "StatefulSkip(+1) overrun");
/* Overrun */
StatefulInit(&s, buf, 128);
TEST_PTR_EQ(NULL, StatefulSkip(&s, 256), "StatefulSkip(256) retval");
TEST_EQ(1, s.overrun, "StatefulSkip(256) overrun");
/* Once overrun, always overrun, even if we now ask for a small skip */
TEST_PTR_EQ(NULL, StatefulSkip(&s, 1), "StatefulSkip(256+1) retval");
TEST_EQ(1, s.overrun, "StatefulSkip(256+1) overrun");
/* Overrun with potential wraparound */
StatefulInit(&s, buf, 128);
TEST_PTR_EQ(NULL, StatefulSkip(&s, -1), "StatefulSkip(-1) retval");
TEST_EQ(1, s.overrun, "StatefulSkip(-1) overrun");
}
/* Test StatefulMemset_r */
static void StatefulMemset_rTest(void) {
MemcpyState s;
char buf[129];
char want[129];
memset(want, 0, sizeof(want));
memset(buf, 0, sizeof(buf));
/* Small sets */
StatefulInit(&s, buf, 128);
TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'A', 5), "StatefulMemset_r(5) retval");
TEST_EQ(128 - 5, s.remaining_len, "StatefulMemset_r(5) len");
TEST_PTR_EQ(buf + 5, s.remaining_buf, "StatefulMemset_r(5) buf");
/* Using strcmp() is a convenient way to check that we didn't
* overwrite the 0-byte following what we expected to set. */
TEST_EQ(0, strcmp("AAAAA", buf), "StatefulMemset_r(5) contents");
TEST_EQ(0, s.overrun, "StatefulMemset_r(5) overrun");
TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'B', 3), "StatefulMemset_r(3) retval");
TEST_EQ(0, strcmp("AAAAABBB", buf), "StatefulMemset_r(3) contents");
/* Use entire buffer */
StatefulInit(&s, buf, 128);
TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'C', 128),
"StatefulMemset_r(all) retval");
TEST_EQ(0, s.remaining_len, "StatefulMemset_r(all) len");
TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulMemset_r(all) buf");
TEST_EQ(0, s.overrun, "StatefulMemset_r(all) overrun");
memset(want, 'C', 128);
TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(all) contents");
/* Zero-length set is ok (but meaningless) */
TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'D', 0), "StatefulMemset_r(0) retval");
TEST_EQ(0, s.remaining_len, "StatefulMemset_r(0) len");
TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulMemset_r(0) buf");
TEST_EQ(0, s.overrun, "StatefulMemset_r(0) overrun");
TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(0) contents");
/* Can't use even one byte past that */
TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'E', 1),
"StatefulMemset_r(+1) retval");
TEST_EQ(0, s.remaining_len, "StatefulMemset_r(+1) len");
TEST_EQ(1, s.overrun, "StatefulMemset_r(+1) overrun");
TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(+1) contents");
/* Overrun */
StatefulInit(&s, buf, 128);
TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'F', 256),
"StatefulMemset_r(256) retval");
TEST_EQ(1, s.overrun, "StatefulMemset_r(256) overrun");
/* Once overrun, always overrun, even if we now ask for a small skip */
TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'G', 1),
"StatefulMemset_r(256+1) retval");
TEST_EQ(1, s.overrun, "StatefulMemset_r(256+1) overrun");
TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(+1) contents");
/* Overrun with potential wraparound */
StatefulInit(&s, buf, 128);
TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'H', -1),
"StatefulMemset_r(-1) retval");
TEST_EQ(1, s.overrun, "StatefulMemset_r(-1) overrun");
TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(+1) contents");
}
/* Test StatefulMemcpy_r */
static void StatefulMemcpy_rTest(void) {
MemcpyState s;
char buf[129];
char want[129];
char* src1 = "Doogie";
char* src2 = "Howserrr";
char* src3 = "WholeBuffr";
memset(want, 0, sizeof(want));
memset(buf, 0, sizeof(buf));
/* Small copies */
StatefulInit(&s, buf, 128);
TEST_PTR_EQ(src1, StatefulMemcpy_r(&s, src1, 6),
"StatefulMemcpy_r(6) retval");
TEST_EQ(128 - 6, s.remaining_len, "StatefulMemcpy_r(6) len");
TEST_PTR_EQ(buf + 6, s.remaining_buf, "StatefulMemcpy_r(6) buf");
/* Using strcmp() is a convenient way to check that we didn't
* overwrite the 0-byte following what we expected to copy. */
TEST_EQ(0, strcmp("Doogie", buf), "StatefulMemcpy_r(6) contents");
TEST_EQ(0, s.overrun, "StatefulMemcpy_r(6) overrun");
TEST_PTR_EQ(src2, StatefulMemcpy_r(&s, src2, 8),
"StatefulMemcpy_r(8) retval");
TEST_EQ(0, strcmp("DoogieHowserrr", buf), "StatefulMemcpy_r(8) contents");
/* Use entire buffer */
memset(buf, 42, sizeof(buf));
StatefulInit(&s, buf, 10);
TEST_PTR_EQ(src3, StatefulMemcpy_r(&s, src3, 10),
"StatefulMemcpy_r(all) retval");
TEST_EQ(0, s.remaining_len, "StatefulMemcpy_r(all) len");
TEST_PTR_EQ(buf + 10, s.remaining_buf, "StatefulMemcpy_r(all) buf");
TEST_EQ(0, s.overrun, "StatefulMemcpy_r(all) overrun");
TEST_EQ(0, memcmp(src3, buf, 10), "StatefulMemcpy_r(all) contents");
TEST_EQ(42, buf[10], "StatefulMemcpy_r(all) contents+1");
/* Zero-length copy is ok (but meaningless) */
TEST_PTR_EQ(src1, StatefulMemcpy_r(&s, src1, 0),
"StatefulMemcpy_r(0) retval");
TEST_EQ(0, s.remaining_len, "StatefulMemcpy_r(0) len");
TEST_PTR_EQ(buf + 10, s.remaining_buf, "StatefulMemcpy_r(0) buf");
TEST_EQ(0, s.overrun, "StatefulMemcpy_r(0) overrun");
TEST_EQ(42, buf[10], "StatefulMemcpy_r(0) contents+1");
/* Can't use even one byte past that */
TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, src1, 1),
"StatefulMemcpy_r(+1) retval");
TEST_EQ(0, s.remaining_len, "StatefulMemcpy_r(+1) len");
TEST_EQ(1, s.overrun, "StatefulMemcpy_r(+1) overrun");
TEST_EQ(42, buf[10], "StatefulMemcpy_r(+1) contents");
/* Overrun */
memset(buf, 0, sizeof(buf));
StatefulInit(&s, buf, 8);
TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, "MoreThan8", 9),
"StatefulMemcpy_r(9) retval");
TEST_EQ(1, s.overrun, "StatefulMemcpy_r(9) overrun");
/* Once overrun, always overrun, even if we now ask for a small skip */
TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, "Less", 4),
"StatefulMemcpy_r(9+1) retval");
TEST_EQ(1, s.overrun, "StatefulMemcpy_r(9+1) overrun");
TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy_r(+1) contents");
/* Overrun with potential wraparound */
StatefulInit(&s, buf, 128);
TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, "FOO", -1),
"StatefulMemcpy_r(-1) retval");
TEST_EQ(1, s.overrun, "StatefulMemcpy_r(-1) overrun");
TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy_r(+1) contents");
}
/* Test StatefulMemcpy */
static void StatefulMemcpyTest(void) {
MemcpyState s;
char buf[129];
char want[129];
char* src1 = "ThisIsATest";
char* src2 = "ThisIsOnlyATest";
memset(want, 0, sizeof(want));
memset(buf, 0, sizeof(buf));
/* Small copies */
StatefulInit(&s, src1, 12);
TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 6), "StatefulMemcpy(6) retval");
TEST_EQ(6, s.remaining_len, "StatefulMemcpy(6) len");
TEST_PTR_EQ(src1 + 6, s.remaining_buf, "StatefulMemcpy(6) buf");
/* Using strcmp() is a convenient way to check that we didn't
* overwrite the 0-byte following what we expected to copy. */
TEST_EQ(0, strcmp("ThisIs", buf), "StatefulMemcpy(6) contents");
TEST_EQ(0, s.overrun, "StatefulMemcpy(6) overrun");
TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 5), "StatefulMemcpy(5) retval");
/* Note that we shouldn't have copied the last byte out of the
* stateful buffer, so we don't overwrite the last character of the
* string that was in buf. */
TEST_EQ(0, strcmp("ATests", buf), "StatefulMemcpy(5) contents");
/* Use entire buffer */
memset(buf, 1, sizeof(buf));
StatefulInit(&s, src2, 16);
TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 16), "StatefulMemcpy(all) retval");
TEST_EQ(0, s.remaining_len, "StatefulMemcpy(all) len");
TEST_PTR_EQ(src2 + 16, s.remaining_buf, "StatefulMemcpy(all) buf");
TEST_EQ(0, s.overrun, "StatefulMemcpy(all) overrun");
TEST_EQ(0, strcmp(src2, buf), "StatefulMemcpy(all) contents");
/* Zero-length copy is ok (but meaningless) */
TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 0),
"StatefulMemcpy(0) retval");
TEST_EQ(0, s.remaining_len, "StatefulMemcpy(0) len");
TEST_PTR_EQ(src2 + 16, s.remaining_buf, "StatefulMemcpy(0) buf");
TEST_EQ(0, s.overrun, "StatefulMemcpy(0) overrun");
TEST_EQ(0, strcmp(src2, buf), "StatefulMemcpy(0) contents");
/* Can't use even one byte past that */
TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, 1),
"StatefulMemcpy(+1) retval");
TEST_EQ(0, s.remaining_len, "StatefulMemcpy(+1) len");
TEST_EQ(1, s.overrun, "StatefulMemcpy(+1) overrun");
TEST_EQ(0, strcmp(src2, buf), "StatefulMemcpy(+1) contents");
/* Overrun */
memset(buf, 0, sizeof(buf));
StatefulInit(&s, "Small", 5);
TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, 9), "StatefulMemcpy(9) retval");
TEST_EQ(1, s.overrun, "StatefulMemcpy(9) overrun");
/* Once overrun, always overrun, even if we now ask for a small skip */
TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, 4),
"StatefulMemcpy(9+1) retval");
TEST_EQ(1, s.overrun, "StatefulMemcpy(9+1) overrun");
TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy(+1) contents");
/* Overrun with potential wraparound */
StatefulInit(&s, "Larger", 6);
TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, -1), "StatefulMemcpy(-1) retval");
TEST_EQ(1, s.overrun, "StatefulMemcpy(-1) overrun");
TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy(+1) contents");
}
int main(int argc, char* argv[]) {
int error_code = 0;
StatefulInitTest();
StatefulSkipTest();
StatefulMemset_rTest();
StatefulMemcpy_rTest();
StatefulMemcpyTest();
if (!gTestSuccess)
error_code = 255;
return error_code;
}