Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Mode of operation: |
Lev Walkin | 93896cc | 2007-06-23 18:41:51 +0000 | [diff] [blame] | 3 | * Each of the *.in files is XER-decoded, then converted into PER, |
| 4 | * then decoded back from PER, then encoded into XER again, |
| 5 | * and finally compared to the original encoding. |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 6 | */ |
| 7 | #undef NDEBUG |
| 8 | #include <stdio.h> |
| 9 | #include <stdlib.h> |
| 10 | #include <sys/types.h> |
| 11 | #include <unistd.h> /* for chdir(2) */ |
| 12 | #include <string.h> |
| 13 | #include <dirent.h> |
| 14 | #include <assert.h> |
| 15 | #include <ctype.h> |
| 16 | #include <errno.h> |
| 17 | |
| 18 | #include <PDU.h> |
| 19 | |
| 20 | enum expectation { |
| 21 | EXP_OK, /* Encoding/decoding must succeed */ |
| 22 | EXP_CXER_EXACT, /* Encoding/decoding using CXER must be exact */ |
| 23 | EXP_CXER_DIFF, /* Encoding/decoding using CXER must be different */ |
| 24 | EXP_BROKEN, /* Decoding must fail */ |
| 25 | EXP_DIFFERENT, /* Reconstruction will yield different encoding */ |
| 26 | EXP_PER_NOCOMP, /* Not PER compatible */ |
| 27 | }; |
| 28 | |
| 29 | static unsigned char buf[4096]; |
Lev Walkin | 1715b32 | 2013-03-28 04:02:13 -0700 | [diff] [blame^] | 30 | static size_t buf_offset; |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 31 | |
| 32 | static int |
| 33 | _buf_writer(const void *buffer, size_t size, void *app_key) { |
| 34 | unsigned char *b, *bend; |
| 35 | (void)app_key; |
| 36 | assert(buf_offset + size < sizeof(buf)); |
| 37 | memcpy(buf + buf_offset, buffer, size); |
| 38 | b = buf + buf_offset; |
| 39 | bend = b + size; |
| 40 | fprintf(stderr, "=> ["); |
| 41 | for(; b < bend; b++) { |
| 42 | if(*b >= 32 && *b < 127 && *b != '%') |
| 43 | fprintf(stderr, "%c", *b); |
| 44 | else |
| 45 | fprintf(stderr, "%%%02x", *b); |
| 46 | } |
Lev Walkin | 1715b32 | 2013-03-28 04:02:13 -0700 | [diff] [blame^] | 47 | fprintf(stderr, "]:%zd\n", size); |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 48 | buf_offset += size; |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | enum enctype { |
| 53 | AS_PER, |
| 54 | AS_DER, |
| 55 | AS_XER, |
| 56 | AS_CXER, |
| 57 | }; |
| 58 | |
| 59 | static void |
| 60 | save_object_as(PDU_t *st, enum expectation exp, enum enctype how) { |
| 61 | asn_enc_rval_t rval; /* Return value */ |
| 62 | |
| 63 | buf_offset = 0; |
| 64 | |
| 65 | /* |
| 66 | * Save object using specified method. |
| 67 | */ |
| 68 | switch(how) { |
| 69 | case AS_PER: |
| 70 | rval = uper_encode(&asn_DEF_PDU, st, |
| 71 | _buf_writer, 0); |
| 72 | if(exp == EXP_PER_NOCOMP) |
| 73 | assert(rval.encoded == -1); |
| 74 | else |
| 75 | assert(rval.encoded > 0); |
Lev Walkin | 1715b32 | 2013-03-28 04:02:13 -0700 | [diff] [blame^] | 76 | fprintf(stderr, "SAVED OBJECT IN SIZE %zd\n", buf_offset); |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 77 | return; |
| 78 | case AS_DER: |
| 79 | rval = der_encode(&asn_DEF_PDU, st, |
| 80 | _buf_writer, 0); |
| 81 | break; |
| 82 | case AS_XER: |
| 83 | rval = xer_encode(&asn_DEF_PDU, st, XER_F_BASIC, |
| 84 | _buf_writer, 0); |
| 85 | break; |
| 86 | case AS_CXER: |
| 87 | rval = xer_encode(&asn_DEF_PDU, st, XER_F_CANONICAL, |
| 88 | _buf_writer, 0); |
| 89 | break; |
| 90 | } |
| 91 | |
| 92 | if (rval.encoded == -1) { |
| 93 | fprintf(stderr, |
| 94 | "Cannot encode %s: %s\n", |
| 95 | rval.failed_type->name, strerror(errno)); |
| 96 | assert(rval.encoded != -1); |
| 97 | return; |
| 98 | } |
| 99 | |
Lev Walkin | 1715b32 | 2013-03-28 04:02:13 -0700 | [diff] [blame^] | 100 | fprintf(stderr, "SAVED OBJECT IN SIZE %zd\n", buf_offset); |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | static PDU_t * |
Lev Walkin | 1715b32 | 2013-03-28 04:02:13 -0700 | [diff] [blame^] | 104 | load_object_from(const char *fname, enum expectation expectation, char *fbuf, size_t size, enum enctype how) { |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 105 | asn_dec_rval_t rval; |
| 106 | PDU_t *st = 0; |
Lev Walkin | 1715b32 | 2013-03-28 04:02:13 -0700 | [diff] [blame^] | 107 | size_t csize = 1; |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 108 | |
| 109 | if(getenv("INITIAL_CHUNK_SIZE")) |
| 110 | csize = atoi(getenv("INITIAL_CHUNK_SIZE")); |
| 111 | |
| 112 | /* Perform multiple iterations with multiple chunks sizes */ |
| 113 | for(; csize < 20; csize += 1) { |
| 114 | int fbuf_offset = 0; |
| 115 | int fbuf_left = size; |
| 116 | int fbuf_chunk = csize; |
| 117 | |
| 118 | fprintf(stderr, "LOADING OBJECT OF SIZE %d FROM [%s] as %s," |
Lev Walkin | 1715b32 | 2013-03-28 04:02:13 -0700 | [diff] [blame^] | 119 | " chunks %zd\n", |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 120 | size, fname, how==AS_PER?"PER":"XER", csize); |
| 121 | |
| 122 | if(st) asn_DEF_PDU.free_struct(&asn_DEF_PDU, st, 0); |
| 123 | st = 0; |
| 124 | |
| 125 | do { |
| 126 | fprintf(stderr, "Decoding bytes %d..%d (left %d)\n", |
| 127 | fbuf_offset, |
| 128 | fbuf_chunk < fbuf_left |
| 129 | ? fbuf_chunk : fbuf_left, |
| 130 | fbuf_left); |
| 131 | if(st) { |
| 132 | fprintf(stderr, "=== currently ===\n"); |
| 133 | asn_fprint(stderr, &asn_DEF_PDU, st); |
| 134 | fprintf(stderr, "=== end ===\n"); |
| 135 | } |
| 136 | switch(how) { |
| 137 | case AS_XER: |
| 138 | rval = xer_decode(0, &asn_DEF_PDU, (void **)&st, |
| 139 | fbuf + fbuf_offset, |
| 140 | fbuf_chunk < fbuf_left |
| 141 | ? fbuf_chunk : fbuf_left); |
| 142 | break; |
| 143 | case AS_PER: |
| 144 | rval = uper_decode(0, &asn_DEF_PDU, |
| 145 | (void **)&st, fbuf + fbuf_offset, |
| 146 | fbuf_chunk < fbuf_left |
| 147 | ? fbuf_chunk : fbuf_left, 0, 0); |
| 148 | if(rval.code == RC_WMORE) { |
| 149 | rval.consumed = 0; /* Not restartable */ |
| 150 | ASN_STRUCT_FREE(asn_DEF_PDU, st); |
| 151 | st = 0; |
| 152 | fprintf(stderr, "-> PER wants more\n"); |
| 153 | } else { |
Lev Walkin | 1715b32 | 2013-03-28 04:02:13 -0700 | [diff] [blame^] | 154 | fprintf(stderr, "-> PER ret %d/%ld\n", |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 155 | rval.code, rval.consumed); |
| 156 | /* uper_decode() returns _bits_ */ |
| 157 | rval.consumed += 7; |
| 158 | rval.consumed /= 8; |
| 159 | } |
| 160 | break; |
| 161 | } |
| 162 | fbuf_offset += rval.consumed; |
| 163 | fbuf_left -= rval.consumed; |
| 164 | if(rval.code == RC_WMORE) |
| 165 | fbuf_chunk += 1; /* Give little more */ |
| 166 | else |
| 167 | fbuf_chunk = csize; /* Back off */ |
| 168 | } while(fbuf_left && rval.code == RC_WMORE); |
| 169 | |
| 170 | if(expectation != EXP_BROKEN) { |
| 171 | assert(rval.code == RC_OK); |
| 172 | if(how == AS_PER) { |
| 173 | fprintf(stderr, "[left %d, off %d, size %d]\n", |
| 174 | fbuf_left, fbuf_offset, size); |
| 175 | assert(fbuf_offset == size); |
| 176 | } else { |
| 177 | assert(fbuf_offset - size < 2 |
| 178 | || (fbuf_offset + 1 /* "\n" */ == size |
| 179 | && fbuf[size - 1] == '\n') |
| 180 | || (fbuf_offset + 2 /* "\r\n" */ == size |
| 181 | && fbuf[size - 2] == '\r' |
| 182 | && fbuf[size - 1] == '\n') |
| 183 | ); |
| 184 | } |
| 185 | } else { |
| 186 | assert(rval.code != RC_OK); |
| 187 | fprintf(stderr, "Failed, but this was expected\n"); |
| 188 | asn_DEF_PDU.free_struct(&asn_DEF_PDU, st, 0); |
| 189 | st = 0; /* ignore leak for now */ |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | if(st) asn_fprint(stderr, &asn_DEF_PDU, st); |
| 194 | return st; |
| 195 | } |
| 196 | |
| 197 | static int |
| 198 | xer_encoding_equal(char *obuf, size_t osize, char *nbuf, size_t nsize) { |
| 199 | char *oend = obuf + osize; |
| 200 | char *nend = nbuf + nsize; |
| 201 | |
| 202 | if((osize && !nsize) || (!osize && nsize)) |
| 203 | return 0; /* not equal apriori */ |
| 204 | |
| 205 | while(1) { |
| 206 | while(obuf < oend && isspace(*obuf)) obuf++; |
| 207 | while(nbuf < nend && isspace(*nbuf)) nbuf++; |
| 208 | |
| 209 | if(obuf == oend || nbuf == nend) { |
| 210 | if(obuf == oend && nbuf == nend) |
| 211 | break; |
| 212 | fprintf(stderr, "%s data in reconstructed encoding\n", |
| 213 | (obuf == oend) ? "More" : "Less"); |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | if(*obuf != *nbuf) { |
| 218 | printf("%c%c != %c%c\n", |
| 219 | obuf[0], obuf[1], |
| 220 | nbuf[0], nbuf[1]); |
| 221 | return 0; |
| 222 | } |
| 223 | obuf++, nbuf++; |
| 224 | } |
| 225 | |
| 226 | return 1; |
| 227 | } |
| 228 | |
| 229 | static void |
Lev Walkin | 1715b32 | 2013-03-28 04:02:13 -0700 | [diff] [blame^] | 230 | process_XER_data(const char *fname, enum expectation expectation, char *fbuf, size_t size) { |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 231 | PDU_t *st; |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 232 | |
| 233 | st = load_object_from(fname, expectation, fbuf, size, AS_XER); |
| 234 | if(!st) return; |
| 235 | |
Lev Walkin | 788490d | 2007-06-23 23:36:51 +0000 | [diff] [blame] | 236 | /* Save and re-load as PER */ |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 237 | save_object_as(st, expectation, AS_PER); |
| 238 | if(expectation == EXP_PER_NOCOMP) |
| 239 | return; /* Already checked */ |
| 240 | st = load_object_from("buffer", expectation, buf, buf_offset, AS_PER); |
| 241 | assert(st); |
| 242 | |
| 243 | save_object_as(st, |
| 244 | expectation, |
| 245 | (expectation == EXP_CXER_EXACT |
| 246 | || expectation == EXP_CXER_DIFF) |
| 247 | ? AS_CXER : AS_XER); |
| 248 | fprintf(stderr, "=== original ===\n"); |
| 249 | fwrite(fbuf, 1, size, stderr); |
| 250 | fprintf(stderr, "=== re-encoded ===\n"); |
| 251 | fwrite(buf, 1, buf_offset, stderr); |
| 252 | fprintf(stderr, "=== end ===\n"); |
| 253 | |
| 254 | switch(expectation) { |
| 255 | case EXP_DIFFERENT: |
| 256 | assert(!xer_encoding_equal(fbuf, size, buf, buf_offset)); |
| 257 | break; |
| 258 | case EXP_BROKEN: |
| 259 | assert(!xer_encoding_equal(fbuf, size, buf, buf_offset)); |
| 260 | break; |
| 261 | case EXP_CXER_EXACT: |
| 262 | buf[buf_offset++] = '\n'; |
| 263 | assert(size == buf_offset); |
| 264 | assert(memcmp(fbuf, buf, size) == 0); |
| 265 | break; |
| 266 | case EXP_CXER_DIFF: |
| 267 | buf[buf_offset++] = '\n'; |
| 268 | assert(size != buf_offset |
| 269 | || memcmp(fbuf, buf, size)); |
| 270 | break; |
| 271 | case EXP_OK: |
| 272 | case EXP_PER_NOCOMP: |
| 273 | assert(xer_encoding_equal(fbuf, size, buf, buf_offset)); |
| 274 | break; |
| 275 | } |
| 276 | |
| 277 | asn_DEF_PDU.free_struct(&asn_DEF_PDU, st, 0); |
| 278 | } |
| 279 | |
| 280 | /* |
| 281 | * Decode the .der files and try to regenerate them. |
| 282 | */ |
| 283 | static int |
| 284 | process(const char *fname) { |
| 285 | char fbuf[4096]; |
| 286 | char *ext = strrchr(fname, '.'); |
| 287 | enum expectation expectation; |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 288 | int rd; |
| 289 | FILE *fp; |
| 290 | |
| 291 | if(ext == 0 || strcmp(ext, ".in")) |
| 292 | return 0; |
| 293 | |
| 294 | switch(ext[-1]) { |
| 295 | case 'B': /* The file is intentionally broken */ |
| 296 | expectation = EXP_BROKEN; break; |
| 297 | case 'D': /* Reconstructing should yield different data */ |
| 298 | expectation = EXP_DIFFERENT; break; |
| 299 | case 'E': /* Byte to byte exact reconstruction */ |
| 300 | expectation = EXP_CXER_EXACT; break; |
| 301 | case 'X': /* Should fail byte-to-byte comparison */ |
| 302 | expectation = EXP_CXER_DIFF; break; |
| 303 | case 'P': /* Incompatible with PER */ |
| 304 | expectation = EXP_PER_NOCOMP; break; |
| 305 | default: |
| 306 | expectation = EXP_OK; break; |
| 307 | } |
| 308 | |
| 309 | fprintf(stderr, "\nProcessing file [../%s]\n", fname); |
| 310 | |
Lev Walkin | f91097c | 2006-10-16 13:15:45 +0000 | [diff] [blame] | 311 | snprintf(fbuf, sizeof(fbuf), "../data-119/%s", fname); |
| 312 | fp = fopen(fbuf, "r"); |
Lev Walkin | 725883b | 2006-10-09 12:07:58 +0000 | [diff] [blame] | 313 | assert(fp); |
| 314 | |
| 315 | rd = fread(fbuf, 1, sizeof(fbuf), fp); |
| 316 | fclose(fp); |
| 317 | |
| 318 | assert(rd < sizeof(fbuf)); /* expect small files */ |
| 319 | |
| 320 | process_XER_data(fname, expectation, fbuf, rd); |
| 321 | |
| 322 | fprintf(stderr, "Finished [%s]\n", fname); |
| 323 | |
| 324 | return 1; |
| 325 | } |
| 326 | |
| 327 | int |
| 328 | main() { |
| 329 | DIR *dir; |
| 330 | struct dirent *dent; |
| 331 | int processed_files = 0; |
| 332 | char *str; |
| 333 | |
| 334 | /* Process a specific test file */ |
| 335 | str = getenv("DATA_119_FILE"); |
| 336 | if(str && strncmp(str, "data-119-", 9) == 0) { |
| 337 | process(str); |
| 338 | return 0; |
| 339 | } |
| 340 | |
| 341 | dir = opendir("../data-119"); |
| 342 | assert(dir); |
| 343 | |
| 344 | /* |
| 345 | * Process each file in that directory. |
| 346 | */ |
| 347 | while((dent = readdir(dir))) { |
| 348 | if(strncmp(dent->d_name, "data-119-", 9) == 0) |
| 349 | if(process(dent->d_name)) |
| 350 | processed_files++; |
| 351 | } |
| 352 | |
| 353 | assert(processed_files); |
| 354 | closedir(dir); |
| 355 | |
| 356 | return 0; |
| 357 | } |
| 358 | |