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