Randall Spangler | 1f5d53f | 2011-08-24 12:07:43 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2011 The Chromium OS Authors. All rights reserved. |
| 2 | * Use of this source code is governed by a BSD-style license that can be |
| 3 | * found in the LICENSE file. |
| 4 | * |
| 5 | * Tests for statful_util functions. |
| 6 | */ |
| 7 | |
Bill Richardson | 0c3ba24 | 2013-03-29 11:09:30 -0700 | [diff] [blame] | 8 | #include <stdint.h> |
Randall Spangler | 1f5d53f | 2011-08-24 12:07:43 -0700 | [diff] [blame] | 9 | #include <stdio.h> |
| 10 | #include <stdlib.h> |
| 11 | #include <string.h> |
| 12 | |
| 13 | #define _STUB_IMPLEMENTATION_ /* So we can use memset() ourselves */ |
| 14 | |
| 15 | #include "stateful_util.h" |
| 16 | #include "test_common.h" |
| 17 | #include "utility.h" |
| 18 | #include "vboot_common.h" |
| 19 | |
| 20 | |
| 21 | /* Test StatefulInit */ |
| 22 | static void StatefulInitTest(void) { |
| 23 | MemcpyState s; |
| 24 | char buf[128]; |
| 25 | |
| 26 | memset(&s, 0, sizeof(s)); |
| 27 | s.overrun = 1; |
| 28 | StatefulInit(&s, buf, 128); |
| 29 | TEST_EQ(0, s.overrun, "StatefulInit() overrun"); |
| 30 | TEST_EQ(128, s.remaining_len, "StatefulInit() len"); |
| 31 | TEST_PTR_EQ(buf, s.remaining_buf, "StatefulInit() buf"); |
| 32 | } |
| 33 | |
| 34 | |
| 35 | /* Test StatefulSkip */ |
| 36 | static void StatefulSkipTest(void) { |
| 37 | MemcpyState s; |
| 38 | char buf[128]; |
| 39 | |
| 40 | /* Small skip */ |
| 41 | StatefulInit(&s, buf, 128); |
| 42 | TEST_PTR_EQ(&s, StatefulSkip(&s, 5), "StatefulSkip(5) retval"); |
| 43 | TEST_EQ(128 - 5, s.remaining_len, "StatefulSkip(5) len"); |
| 44 | TEST_PTR_EQ(buf + 5, s.remaining_buf, "StatefulSkip(5) buf"); |
| 45 | TEST_EQ(0, s.overrun, "StatefulSkip(5) overrun"); |
| 46 | |
| 47 | /* Use entire buffer */ |
| 48 | StatefulInit(&s, buf, 128); |
| 49 | TEST_PTR_EQ(&s, StatefulSkip(&s, 128), "StatefulSkip(all) retval"); |
| 50 | TEST_EQ(0, s.remaining_len, "StatefulSkip(all) len"); |
| 51 | TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulSkip(all) buf"); |
| 52 | TEST_EQ(0, s.overrun, "StatefulSkip(all) overrun"); |
| 53 | |
| 54 | /* Zero-length skip is ok (but meaningless) */ |
| 55 | TEST_PTR_EQ(&s, StatefulSkip(&s, 0), "StatefulSkip(0) retval"); |
| 56 | TEST_EQ(0, s.remaining_len, "StatefulSkip(0) len"); |
| 57 | TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulSkip(0) buf"); |
| 58 | TEST_EQ(0, s.overrun, "StatefulSkip(0) overrun"); |
| 59 | |
| 60 | /* Can't use even one byte past that */ |
| 61 | TEST_PTR_EQ(NULL, StatefulSkip(&s, 1), "StatefulSkip(+1) retval"); |
| 62 | TEST_EQ(0, s.remaining_len, "StatefulSkip(+1) len"); |
| 63 | TEST_EQ(1, s.overrun, "StatefulSkip(+1) overrun"); |
| 64 | |
| 65 | /* Overrun */ |
| 66 | StatefulInit(&s, buf, 128); |
| 67 | TEST_PTR_EQ(NULL, StatefulSkip(&s, 256), "StatefulSkip(256) retval"); |
| 68 | TEST_EQ(1, s.overrun, "StatefulSkip(256) overrun"); |
| 69 | /* Once overrun, always overrun, even if we now ask for a small skip */ |
| 70 | TEST_PTR_EQ(NULL, StatefulSkip(&s, 1), "StatefulSkip(256+1) retval"); |
| 71 | TEST_EQ(1, s.overrun, "StatefulSkip(256+1) overrun"); |
| 72 | |
| 73 | /* Overrun with potential wraparound */ |
| 74 | StatefulInit(&s, buf, 128); |
| 75 | TEST_PTR_EQ(NULL, StatefulSkip(&s, -1), "StatefulSkip(-1) retval"); |
| 76 | TEST_EQ(1, s.overrun, "StatefulSkip(-1) overrun"); |
| 77 | } |
| 78 | |
| 79 | |
| 80 | /* Test StatefulMemset_r */ |
| 81 | static void StatefulMemset_rTest(void) { |
| 82 | MemcpyState s; |
| 83 | char buf[129]; |
| 84 | char want[129]; |
| 85 | |
| 86 | memset(want, 0, sizeof(want)); |
| 87 | memset(buf, 0, sizeof(buf)); |
| 88 | |
| 89 | /* Small sets */ |
| 90 | StatefulInit(&s, buf, 128); |
| 91 | TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'A', 5), "StatefulMemset_r(5) retval"); |
| 92 | TEST_EQ(128 - 5, s.remaining_len, "StatefulMemset_r(5) len"); |
| 93 | TEST_PTR_EQ(buf + 5, s.remaining_buf, "StatefulMemset_r(5) buf"); |
| 94 | /* Using strcmp() is a convenient way to check that we didn't |
| 95 | * overwrite the 0-byte following what we expected to set. */ |
| 96 | TEST_EQ(0, strcmp("AAAAA", buf), "StatefulMemset_r(5) contents"); |
| 97 | TEST_EQ(0, s.overrun, "StatefulMemset_r(5) overrun"); |
| 98 | TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'B', 3), "StatefulMemset_r(3) retval"); |
| 99 | TEST_EQ(0, strcmp("AAAAABBB", buf), "StatefulMemset_r(3) contents"); |
| 100 | |
| 101 | /* Use entire buffer */ |
| 102 | StatefulInit(&s, buf, 128); |
| 103 | TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'C', 128), |
| 104 | "StatefulMemset_r(all) retval"); |
| 105 | TEST_EQ(0, s.remaining_len, "StatefulMemset_r(all) len"); |
| 106 | TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulMemset_r(all) buf"); |
| 107 | TEST_EQ(0, s.overrun, "StatefulMemset_r(all) overrun"); |
| 108 | memset(want, 'C', 128); |
| 109 | TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(all) contents"); |
| 110 | |
| 111 | /* Zero-length set is ok (but meaningless) */ |
| 112 | TEST_PTR_EQ(&s, StatefulMemset_r(&s, 'D', 0), "StatefulMemset_r(0) retval"); |
| 113 | TEST_EQ(0, s.remaining_len, "StatefulMemset_r(0) len"); |
| 114 | TEST_PTR_EQ(buf + 128, s.remaining_buf, "StatefulMemset_r(0) buf"); |
| 115 | TEST_EQ(0, s.overrun, "StatefulMemset_r(0) overrun"); |
| 116 | TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(0) contents"); |
| 117 | |
| 118 | /* Can't use even one byte past that */ |
| 119 | TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'E', 1), |
| 120 | "StatefulMemset_r(+1) retval"); |
| 121 | TEST_EQ(0, s.remaining_len, "StatefulMemset_r(+1) len"); |
| 122 | TEST_EQ(1, s.overrun, "StatefulMemset_r(+1) overrun"); |
| 123 | TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(+1) contents"); |
| 124 | |
| 125 | /* Overrun */ |
| 126 | StatefulInit(&s, buf, 128); |
| 127 | TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'F', 256), |
| 128 | "StatefulMemset_r(256) retval"); |
| 129 | TEST_EQ(1, s.overrun, "StatefulMemset_r(256) overrun"); |
| 130 | /* Once overrun, always overrun, even if we now ask for a small skip */ |
| 131 | TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'G', 1), |
| 132 | "StatefulMemset_r(256+1) retval"); |
| 133 | TEST_EQ(1, s.overrun, "StatefulMemset_r(256+1) overrun"); |
| 134 | TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(+1) contents"); |
| 135 | |
| 136 | /* Overrun with potential wraparound */ |
| 137 | StatefulInit(&s, buf, 128); |
| 138 | TEST_PTR_EQ(NULL, StatefulMemset_r(&s, 'H', -1), |
| 139 | "StatefulMemset_r(-1) retval"); |
| 140 | TEST_EQ(1, s.overrun, "StatefulMemset_r(-1) overrun"); |
| 141 | TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemset_r(+1) contents"); |
| 142 | } |
| 143 | |
| 144 | |
| 145 | /* Test StatefulMemcpy_r */ |
| 146 | static void StatefulMemcpy_rTest(void) { |
| 147 | MemcpyState s; |
| 148 | char buf[129]; |
| 149 | char want[129]; |
| 150 | char* src1 = "Doogie"; |
| 151 | char* src2 = "Howserrr"; |
| 152 | char* src3 = "WholeBuffr"; |
| 153 | |
| 154 | memset(want, 0, sizeof(want)); |
| 155 | memset(buf, 0, sizeof(buf)); |
| 156 | |
| 157 | /* Small copies */ |
| 158 | StatefulInit(&s, buf, 128); |
| 159 | TEST_PTR_EQ(src1, StatefulMemcpy_r(&s, src1, 6), |
| 160 | "StatefulMemcpy_r(6) retval"); |
| 161 | TEST_EQ(128 - 6, s.remaining_len, "StatefulMemcpy_r(6) len"); |
| 162 | TEST_PTR_EQ(buf + 6, s.remaining_buf, "StatefulMemcpy_r(6) buf"); |
| 163 | /* Using strcmp() is a convenient way to check that we didn't |
| 164 | * overwrite the 0-byte following what we expected to copy. */ |
| 165 | TEST_EQ(0, strcmp("Doogie", buf), "StatefulMemcpy_r(6) contents"); |
| 166 | TEST_EQ(0, s.overrun, "StatefulMemcpy_r(6) overrun"); |
| 167 | TEST_PTR_EQ(src2, StatefulMemcpy_r(&s, src2, 8), |
| 168 | "StatefulMemcpy_r(8) retval"); |
| 169 | TEST_EQ(0, strcmp("DoogieHowserrr", buf), "StatefulMemcpy_r(8) contents"); |
| 170 | |
| 171 | /* Use entire buffer */ |
| 172 | memset(buf, 42, sizeof(buf)); |
| 173 | StatefulInit(&s, buf, 10); |
| 174 | TEST_PTR_EQ(src3, StatefulMemcpy_r(&s, src3, 10), |
| 175 | "StatefulMemcpy_r(all) retval"); |
| 176 | TEST_EQ(0, s.remaining_len, "StatefulMemcpy_r(all) len"); |
| 177 | TEST_PTR_EQ(buf + 10, s.remaining_buf, "StatefulMemcpy_r(all) buf"); |
| 178 | TEST_EQ(0, s.overrun, "StatefulMemcpy_r(all) overrun"); |
| 179 | TEST_EQ(0, memcmp(src3, buf, 10), "StatefulMemcpy_r(all) contents"); |
| 180 | TEST_EQ(42, buf[10], "StatefulMemcpy_r(all) contents+1"); |
| 181 | |
| 182 | /* Zero-length copy is ok (but meaningless) */ |
| 183 | TEST_PTR_EQ(src1, StatefulMemcpy_r(&s, src1, 0), |
| 184 | "StatefulMemcpy_r(0) retval"); |
| 185 | TEST_EQ(0, s.remaining_len, "StatefulMemcpy_r(0) len"); |
| 186 | TEST_PTR_EQ(buf + 10, s.remaining_buf, "StatefulMemcpy_r(0) buf"); |
| 187 | TEST_EQ(0, s.overrun, "StatefulMemcpy_r(0) overrun"); |
| 188 | TEST_EQ(42, buf[10], "StatefulMemcpy_r(0) contents+1"); |
| 189 | |
| 190 | /* Can't use even one byte past that */ |
| 191 | TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, src1, 1), |
| 192 | "StatefulMemcpy_r(+1) retval"); |
| 193 | TEST_EQ(0, s.remaining_len, "StatefulMemcpy_r(+1) len"); |
| 194 | TEST_EQ(1, s.overrun, "StatefulMemcpy_r(+1) overrun"); |
| 195 | TEST_EQ(42, buf[10], "StatefulMemcpy_r(+1) contents"); |
| 196 | |
| 197 | /* Overrun */ |
| 198 | memset(buf, 0, sizeof(buf)); |
| 199 | StatefulInit(&s, buf, 8); |
| 200 | TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, "MoreThan8", 9), |
| 201 | "StatefulMemcpy_r(9) retval"); |
| 202 | TEST_EQ(1, s.overrun, "StatefulMemcpy_r(9) overrun"); |
| 203 | /* Once overrun, always overrun, even if we now ask for a small skip */ |
| 204 | TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, "Less", 4), |
| 205 | "StatefulMemcpy_r(9+1) retval"); |
| 206 | TEST_EQ(1, s.overrun, "StatefulMemcpy_r(9+1) overrun"); |
| 207 | TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy_r(+1) contents"); |
| 208 | |
| 209 | /* Overrun with potential wraparound */ |
| 210 | StatefulInit(&s, buf, 128); |
| 211 | TEST_PTR_EQ(NULL, StatefulMemcpy_r(&s, "FOO", -1), |
| 212 | "StatefulMemcpy_r(-1) retval"); |
| 213 | TEST_EQ(1, s.overrun, "StatefulMemcpy_r(-1) overrun"); |
| 214 | TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy_r(+1) contents"); |
| 215 | } |
| 216 | |
| 217 | |
| 218 | /* Test StatefulMemcpy */ |
| 219 | static void StatefulMemcpyTest(void) { |
| 220 | MemcpyState s; |
| 221 | char buf[129]; |
| 222 | char want[129]; |
| 223 | char* src1 = "ThisIsATest"; |
| 224 | char* src2 = "ThisIsOnlyATest"; |
| 225 | |
| 226 | memset(want, 0, sizeof(want)); |
| 227 | memset(buf, 0, sizeof(buf)); |
| 228 | |
| 229 | /* Small copies */ |
| 230 | StatefulInit(&s, src1, 12); |
| 231 | TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 6), "StatefulMemcpy(6) retval"); |
| 232 | TEST_EQ(6, s.remaining_len, "StatefulMemcpy(6) len"); |
| 233 | TEST_PTR_EQ(src1 + 6, s.remaining_buf, "StatefulMemcpy(6) buf"); |
| 234 | /* Using strcmp() is a convenient way to check that we didn't |
| 235 | * overwrite the 0-byte following what we expected to copy. */ |
| 236 | TEST_EQ(0, strcmp("ThisIs", buf), "StatefulMemcpy(6) contents"); |
| 237 | TEST_EQ(0, s.overrun, "StatefulMemcpy(6) overrun"); |
| 238 | TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 5), "StatefulMemcpy(5) retval"); |
| 239 | /* Note that we shouldn't have copied the last byte out of the |
| 240 | * stateful buffer, so we don't overwrite the last character of the |
| 241 | * string that was in buf. */ |
| 242 | TEST_EQ(0, strcmp("ATests", buf), "StatefulMemcpy(5) contents"); |
| 243 | |
| 244 | /* Use entire buffer */ |
| 245 | memset(buf, 1, sizeof(buf)); |
| 246 | StatefulInit(&s, src2, 16); |
| 247 | TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 16), "StatefulMemcpy(all) retval"); |
| 248 | TEST_EQ(0, s.remaining_len, "StatefulMemcpy(all) len"); |
| 249 | TEST_PTR_EQ(src2 + 16, s.remaining_buf, "StatefulMemcpy(all) buf"); |
| 250 | TEST_EQ(0, s.overrun, "StatefulMemcpy(all) overrun"); |
| 251 | TEST_EQ(0, strcmp(src2, buf), "StatefulMemcpy(all) contents"); |
| 252 | |
| 253 | /* Zero-length copy is ok (but meaningless) */ |
| 254 | TEST_PTR_EQ(buf, StatefulMemcpy(&s, buf, 0), |
| 255 | "StatefulMemcpy(0) retval"); |
| 256 | TEST_EQ(0, s.remaining_len, "StatefulMemcpy(0) len"); |
| 257 | TEST_PTR_EQ(src2 + 16, s.remaining_buf, "StatefulMemcpy(0) buf"); |
| 258 | TEST_EQ(0, s.overrun, "StatefulMemcpy(0) overrun"); |
| 259 | TEST_EQ(0, strcmp(src2, buf), "StatefulMemcpy(0) contents"); |
| 260 | |
| 261 | /* Can't use even one byte past that */ |
| 262 | TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, 1), |
| 263 | "StatefulMemcpy(+1) retval"); |
| 264 | TEST_EQ(0, s.remaining_len, "StatefulMemcpy(+1) len"); |
| 265 | TEST_EQ(1, s.overrun, "StatefulMemcpy(+1) overrun"); |
| 266 | TEST_EQ(0, strcmp(src2, buf), "StatefulMemcpy(+1) contents"); |
| 267 | |
| 268 | /* Overrun */ |
| 269 | memset(buf, 0, sizeof(buf)); |
| 270 | StatefulInit(&s, "Small", 5); |
| 271 | TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, 9), "StatefulMemcpy(9) retval"); |
| 272 | TEST_EQ(1, s.overrun, "StatefulMemcpy(9) overrun"); |
| 273 | /* Once overrun, always overrun, even if we now ask for a small skip */ |
| 274 | TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, 4), |
| 275 | "StatefulMemcpy(9+1) retval"); |
| 276 | TEST_EQ(1, s.overrun, "StatefulMemcpy(9+1) overrun"); |
| 277 | TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy(+1) contents"); |
| 278 | |
| 279 | /* Overrun with potential wraparound */ |
| 280 | StatefulInit(&s, "Larger", 6); |
| 281 | TEST_PTR_EQ(NULL, StatefulMemcpy(&s, buf, -1), "StatefulMemcpy(-1) retval"); |
| 282 | TEST_EQ(1, s.overrun, "StatefulMemcpy(-1) overrun"); |
| 283 | TEST_EQ(0, memcmp(want, buf, sizeof(want)), "StatefulMemcpy(+1) contents"); |
| 284 | } |
| 285 | |
| 286 | |
Randall Spangler | 1f5d53f | 2011-08-24 12:07:43 -0700 | [diff] [blame] | 287 | int main(int argc, char* argv[]) { |
| 288 | int error_code = 0; |
| 289 | |
| 290 | StatefulInitTest(); |
| 291 | StatefulSkipTest(); |
| 292 | StatefulMemset_rTest(); |
| 293 | StatefulMemcpy_rTest(); |
| 294 | StatefulMemcpyTest(); |
| 295 | |
| 296 | if (!gTestSuccess) |
| 297 | error_code = 255; |
| 298 | |
| 299 | return error_code; |
| 300 | } |