1 /* 2 * Copyright (c) 1999 - 2002 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifdef HAVE_CONFIG_H 35 #include <config.h> 36 #endif 37 #include <stdio.h> 38 #include <string.h> 39 #include <err.h> 40 #include <roken.h> 41 42 #include <asn1-common.h> 43 #include <asn1_err.h> 44 #include <der.h> 45 46 RCSID("$Id: check-der.c,v 1.8 2002/08/23 03:17:34 assar Exp $"); 47 48 static void 49 print_bytes (unsigned const char *buf, size_t len) 50 { 51 int i; 52 53 for (i = 0; i < len; ++i) 54 printf ("%02x ", buf[i]); 55 } 56 57 struct test_case { 58 void *val; 59 int byte_len; 60 const unsigned char *bytes; 61 char *name; 62 }; 63 64 static int 65 generic_test (const struct test_case *tests, 66 unsigned ntests, 67 size_t data_size, 68 int (*encode)(unsigned char *, size_t, void *, size_t *), 69 int (*length)(void *), 70 int (*decode)(unsigned char *, size_t, void *, size_t *), 71 int (*cmp)(void *a, void *b)) 72 { 73 unsigned char buf[4711]; 74 int i; 75 int failures = 0; 76 void *val = malloc (data_size); 77 78 if (data_size != 0 && val == NULL) 79 err (1, "malloc"); 80 81 for (i = 0; i < ntests; ++i) { 82 int ret; 83 size_t sz, consumed_sz, length_sz; 84 unsigned char *beg; 85 86 ret = (*encode) (buf + sizeof(buf) - 1, sizeof(buf), 87 tests[i].val, &sz); 88 beg = buf + sizeof(buf) - sz; 89 if (ret != 0) { 90 printf ("encoding of %s failed\n", tests[i].name); 91 ++failures; 92 } 93 if (sz != tests[i].byte_len) { 94 printf ("encoding of %s has wrong len (%lu != %lu)\n", 95 tests[i].name, 96 (unsigned long)sz, (unsigned long)tests[i].byte_len); 97 ++failures; 98 } 99 100 length_sz = (*length) (tests[i].val); 101 if (sz != length_sz) { 102 printf ("length for %s is bad (%lu != %lu)\n", 103 tests[i].name, (unsigned long)length_sz, (unsigned long)sz); 104 ++failures; 105 } 106 107 if (memcmp (beg, tests[i].bytes, tests[i].byte_len) != 0) { 108 printf ("encoding of %s has bad bytes:\n" 109 "correct: ", tests[i].name); 110 print_bytes (tests[i].bytes, tests[i].byte_len); 111 printf ("\nactual: "); 112 print_bytes (beg, sz); 113 printf ("\n"); 114 ++failures; 115 } 116 ret = (*decode) (beg, sz, val, &consumed_sz); 117 if (ret != 0) { 118 printf ("decoding of %s failed\n", tests[i].name); 119 ++failures; 120 } 121 if (sz != consumed_sz) { 122 printf ("different length decoding %s (%ld != %ld)\n", 123 tests[i].name, 124 (unsigned long)sz, (unsigned long)consumed_sz); 125 ++failures; 126 } 127 if ((*cmp)(val, tests[i].val) != 0) { 128 printf ("%s: comparison failed\n", tests[i].name); 129 ++failures; 130 } 131 } 132 free (val); 133 return failures; 134 } 135 136 static int 137 cmp_integer (void *a, void *b) 138 { 139 int *ia = (int *)a; 140 int *ib = (int *)b; 141 142 return *ib - *ia; 143 } 144 145 static int 146 test_integer (void) 147 { 148 struct test_case tests[] = { 149 {NULL, 3, "\x02\x01\x00"}, 150 {NULL, 3, "\x02\x01\x7f"}, 151 {NULL, 4, "\x02\x02\x00\x80"}, 152 {NULL, 4, "\x02\x02\x01\x00"}, 153 {NULL, 3, "\x02\x01\x80"}, 154 {NULL, 4, "\x02\x02\xff\x7f"}, 155 {NULL, 3, "\x02\x01\xff"}, 156 {NULL, 4, "\x02\x02\xff\x01"}, 157 {NULL, 4, "\x02\x02\x00\xff"}, 158 {NULL, 6, "\x02\x04\x80\x00\x00\x00"}, 159 {NULL, 6, "\x02\x04\x7f\xff\xff\xff"} 160 }; 161 162 int values[] = {0, 127, 128, 256, -128, -129, -1, -255, 255, 163 0x80000000, 0x7fffffff}; 164 int i; 165 int ntests = sizeof(tests) / sizeof(*tests); 166 167 for (i = 0; i < ntests; ++i) { 168 tests[i].val = &values[i]; 169 asprintf (&tests[i].name, "integer %d", values[i]); 170 } 171 172 return generic_test (tests, ntests, sizeof(int), 173 (int (*)(unsigned char *, size_t, 174 void *, size_t *))encode_integer, 175 (int (*)(void *))length_integer, 176 (int (*)(unsigned char *, size_t, 177 void *, size_t *))decode_integer, 178 cmp_integer); 179 } 180 181 static int 182 cmp_octet_string (void *a, void *b) 183 { 184 octet_string *oa = (octet_string *)a; 185 octet_string *ob = (octet_string *)b; 186 187 if (oa->length != ob->length) 188 return ob->length - oa->length; 189 190 return (memcmp (oa->data, ob->data, oa->length)); 191 } 192 193 static int 194 test_octet_string (void) 195 { 196 octet_string s1 = {8, "\x01\x23\x45\x67\x89\xab\xcd\xef"}; 197 198 struct test_case tests[] = { 199 {NULL, 10, "\x04\x08\x01\x23\x45\x67\x89\xab\xcd\xef"} 200 }; 201 int ntests = sizeof(tests) / sizeof(*tests); 202 203 tests[0].val = &s1; 204 asprintf (&tests[0].name, "a octet string"); 205 206 return generic_test (tests, ntests, sizeof(octet_string), 207 (int (*)(unsigned char *, size_t, 208 void *, size_t *))encode_octet_string, 209 (int (*)(void *))length_octet_string, 210 (int (*)(unsigned char *, size_t, 211 void *, size_t *))decode_octet_string, 212 cmp_octet_string); 213 } 214 215 static int 216 cmp_general_string (void *a, void *b) 217 { 218 unsigned char **sa = (unsigned char **)a; 219 unsigned char **sb = (unsigned char **)b; 220 221 return strcmp (*sa, *sb); 222 } 223 224 static int 225 test_general_string (void) 226 { 227 unsigned char *s1 = "Test User 1"; 228 229 struct test_case tests[] = { 230 {NULL, 13, "\x1b\x0b\x54\x65\x73\x74\x20\x55\x73\x65\x72\x20\x31"} 231 }; 232 int ntests = sizeof(tests) / sizeof(*tests); 233 234 tests[0].val = &s1; 235 asprintf (&tests[0].name, "the string \"%s\"", s1); 236 237 return generic_test (tests, ntests, sizeof(unsigned char *), 238 (int (*)(unsigned char *, size_t, 239 void *, size_t *))encode_general_string, 240 (int (*)(void *))length_general_string, 241 (int (*)(unsigned char *, size_t, 242 void *, size_t *))decode_general_string, 243 cmp_general_string); 244 } 245 246 static int 247 cmp_generalized_time (void *a, void *b) 248 { 249 time_t *ta = (time_t *)a; 250 time_t *tb = (time_t *)b; 251 252 return *tb - *ta; 253 } 254 255 static int 256 test_generalized_time (void) 257 { 258 struct test_case tests[] = { 259 {NULL, 17, "\x18\x0f""19700101000000Z"}, 260 {NULL, 17, "\x18\x0f""19851106210627Z"} 261 }; 262 time_t values[] = {0, 500159187}; 263 int i; 264 int ntests = sizeof(tests) / sizeof(*tests); 265 266 for (i = 0; i < ntests; ++i) { 267 tests[i].val = &values[i]; 268 asprintf (&tests[i].name, "time %d", (int)values[i]); 269 } 270 271 return generic_test (tests, ntests, sizeof(time_t), 272 (int (*)(unsigned char *, size_t, 273 void *, size_t *))encode_generalized_time, 274 (int (*)(void *))length_generalized_time, 275 (int (*)(unsigned char *, size_t, 276 void *, size_t *))decode_generalized_time, 277 cmp_generalized_time); 278 } 279 280 int 281 main(int argc, char **argv) 282 { 283 int ret = 0; 284 285 ret += test_integer (); 286 ret += test_octet_string (); 287 ret += test_general_string (); 288 ret += test_generalized_time (); 289 290 return ret; 291 } 292