| /* 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 <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"); |
| } |
| |
| |
| /* disable MSVC warnings on unused arguments */ |
| __pragma(warning (disable: 4100)) |
| |
| 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; |
| } |