Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Mode of operation: |
| 3 | * Each of the *.in files is XER-decoded, then converted into DER, |
| 4 | * then decoded from DER and encoded into XER again. The resulting |
| 5 | * stream is compared with the corresponding .out file. |
| 6 | */ |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 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 <errno.h> |
| 16 | |
| 17 | #include <PDU.h> |
| 18 | |
| 19 | enum expectation { |
| 20 | EXP_OK, /* Encoding/decoding must succeed */ |
| 21 | EXP_BROKEN, /* Decoding must fail */ |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 22 | EXP_DIFFERENT, /* Reconstruction will yield different encoding */ |
| 23 | }; |
| 24 | |
| 25 | static unsigned char buf[4096]; |
| 26 | static int buf_offset; |
| 27 | |
| 28 | static int |
| 29 | _buf_writer(const void *buffer, size_t size, void *app_key) { |
| 30 | unsigned char *b, *bend; |
| 31 | (void)app_key; |
| 32 | assert(buf_offset + size < sizeof(buf)); |
| 33 | memcpy(buf + buf_offset, buffer, size); |
| 34 | b = buf + buf_offset; |
| 35 | bend = b + size; |
| 36 | printf("=> ["); |
| 37 | for(; b < bend; b++) |
| 38 | printf("%c", *b); |
| 39 | printf("]:%ld\n", (long)size); |
| 40 | buf_offset += size; |
| 41 | return 0; |
| 42 | } |
| 43 | |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 44 | enum der_or_xer { |
| 45 | AS_DER, |
| 46 | AS_XER, |
| 47 | }; |
| 48 | |
| 49 | static void |
| 50 | save_object_as(PDU_t *st, enum der_or_xer how) { |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 51 | asn_enc_rval_t rval; /* Return value */ |
| 52 | |
| 53 | buf_offset = 0; |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 54 | |
| 55 | /* |
| 56 | * Save object using specified method. |
| 57 | */ |
| 58 | switch(how) { |
| 59 | case AS_DER: |
| 60 | rval = der_encode(&asn_DEF_PDU, st, |
| 61 | _buf_writer, 0); |
| 62 | break; |
| 63 | case AS_XER: |
| 64 | rval = xer_encode(&asn_DEF_PDU, st, XER_F_BASIC, |
| 65 | _buf_writer, 0); |
| 66 | break; |
| 67 | } |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 68 | if (rval.encoded == -1) { |
| 69 | fprintf(stderr, |
| 70 | "Cannot encode %s: %s\n", |
| 71 | rval.failed_type->name, strerror(errno)); |
| 72 | assert(rval.encoded != -1); |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 73 | return; |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 74 | } |
| 75 | |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 76 | fprintf(stderr, "SAVED OBJECT IN SIZE %d\n", buf_offset); |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | static PDU_t * |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 80 | load_object_from(enum expectation expectation, char *fbuf, int size, enum der_or_xer how) { |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 81 | asn_dec_rval_t rval; |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 82 | asn_dec_rval_t (*zer_decode)(struct asn_codec_ctx_s *, |
| 83 | asn_TYPE_descriptor_t *, void **, void *, size_t); |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 84 | PDU_t *st = 0; |
| 85 | int csize; |
| 86 | |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 87 | if(how == AS_DER) |
| 88 | zer_decode = ber_decode; |
| 89 | else |
| 90 | zer_decode = xer_decode; |
| 91 | |
| 92 | |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 93 | fprintf(stderr, "LOADING OBJECT OF SIZE %d\n", size); |
| 94 | |
| 95 | /* Perform multiple iterations with multiple chunks sizes */ |
| 96 | for(csize = 1; csize < 20; csize += 1) { |
| 97 | int fbuf_offset = 0; |
| 98 | int fbuf_left = size; |
| 99 | int fbuf_chunk = csize; |
| 100 | |
| 101 | if(st) asn_DEF_PDU.free_struct(&asn_DEF_PDU, st, 0); |
| 102 | st = 0; |
| 103 | |
| 104 | do { |
| 105 | fprintf(stderr, "Decoding from %d with %d (left %d)\n", |
| 106 | fbuf_offset, fbuf_chunk, fbuf_left); |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 107 | rval = zer_decode(0, &asn_DEF_PDU, (void **)&st, |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 108 | fbuf + fbuf_offset, |
| 109 | fbuf_chunk < fbuf_left |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 110 | ? fbuf_chunk : fbuf_left); |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 111 | fbuf_offset += rval.consumed; |
| 112 | fbuf_left -= rval.consumed; |
| 113 | if(rval.code == RC_WMORE) |
| 114 | fbuf_chunk += 1; /* Give little more */ |
| 115 | else |
| 116 | fbuf_chunk = csize; /* Back off */ |
| 117 | } while(fbuf_left && rval.code == RC_WMORE); |
| 118 | |
| 119 | if(expectation != EXP_BROKEN) { |
| 120 | assert(rval.code == RC_OK); |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 121 | if(how == AS_DER) { |
| 122 | assert(fbuf_offset == size); |
| 123 | } else { |
| 124 | assert(fbuf_offset - size < 2 |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 125 | || (fbuf_offset + 1 /* "\n" */ == size |
| 126 | && fbuf[size - 1] == '\n') |
| 127 | || (fbuf_offset + 2 /* "\r\n" */ == size |
| 128 | && fbuf[size - 2] == '\r' |
| 129 | && fbuf[size - 1] == '\n') |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 130 | ); |
| 131 | } |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 132 | } else { |
| 133 | assert(rval.code != RC_OK); |
| 134 | fprintf(stderr, "Failed, but this was expected\n"); |
| 135 | asn_DEF_PDU.free_struct(&asn_DEF_PDU, st, 0); |
| 136 | st = 0; /* ignore leak for now */ |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | if(st) asn_fprint(stderr, &asn_DEF_PDU, st); |
| 141 | return st; |
| 142 | } |
| 143 | |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 144 | static int |
| 145 | xer_encoding_equal(char *obuf, size_t osize, char *nbuf, size_t nsize) { |
| 146 | char *oend = obuf + osize; |
| 147 | char *nend = nbuf + nsize; |
| 148 | |
| 149 | if((osize && !nsize) || (!osize && nsize)) |
| 150 | return 0; /* not equal apriori */ |
| 151 | |
| 152 | while(1) { |
| 153 | while(obuf < oend && isspace(*obuf)) obuf++; |
| 154 | while(nbuf < nend && isspace(*nbuf)) nbuf++; |
| 155 | |
| 156 | if(obuf == oend || nbuf == nend) { |
| 157 | if(obuf == oend && nbuf == nend) |
| 158 | break; |
| 159 | fprintf(stderr, "%s data in reconstructed encoding\n", |
| 160 | (obuf == oend) ? "More" : "Less"); |
| 161 | return 0; |
| 162 | } |
| 163 | |
| 164 | if(*obuf != *nbuf) { |
| 165 | printf("%c%c != %c%c\n", |
| 166 | obuf[0], obuf[1], |
| 167 | nbuf[0], nbuf[1]); |
| 168 | return 0; |
| 169 | } |
| 170 | obuf++, nbuf++; |
| 171 | } |
| 172 | |
| 173 | return 1; |
| 174 | } |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 175 | |
| 176 | static void |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 177 | process_XER_data(enum expectation expectation, char *fbuf, int size) { |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 178 | PDU_t *st; |
| 179 | int ret; |
| 180 | |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 181 | st = load_object_from(expectation, fbuf, size, AS_XER); |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 182 | if(!st) return; |
| 183 | |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 184 | /* Save and re-load as DER */ |
| 185 | save_object_as(st, AS_DER); |
| 186 | st = load_object_from(expectation, buf, buf_offset, AS_DER); |
| 187 | assert(st); |
| 188 | |
| 189 | save_object_as(st, AS_XER); |
| 190 | fprintf(stderr, "=== original ===\n"); |
| 191 | fwrite(fbuf, 1, size, stderr); |
| 192 | fprintf(stderr, "=== re-encoded ===\n"); |
| 193 | fwrite(buf, 1, buf_offset, stderr); |
| 194 | fprintf(stderr, "=== end ===\n"); |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 195 | |
| 196 | switch(expectation) { |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 197 | case EXP_DIFFERENT: |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 198 | assert(!xer_encoding_equal(fbuf, size, buf, buf_offset)); |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 199 | break; |
| 200 | case EXP_BROKEN: |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 201 | assert(!xer_encoding_equal(fbuf, size, buf, buf_offset)); |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 202 | break; |
| 203 | case EXP_OK: |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 204 | assert(xer_encoding_equal(fbuf, size, buf, buf_offset)); |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 205 | break; |
| 206 | } |
| 207 | |
| 208 | asn_DEF_PDU.free_struct(&asn_DEF_PDU, st, 0); |
| 209 | } |
| 210 | |
| 211 | /* |
| 212 | * Decode the .der files and try to regenerate them. |
| 213 | */ |
| 214 | static int |
| 215 | process(const char *fname) { |
| 216 | char fbuf[4096]; |
| 217 | char *ext = strrchr(fname, '.'); |
| 218 | enum expectation expectation; |
| 219 | int ret; |
| 220 | int rd; |
| 221 | FILE *fp; |
| 222 | |
| 223 | if(ext == 0 || strcmp(ext, ".in")) |
| 224 | return 0; |
| 225 | |
| 226 | switch(ext[-1]) { |
| 227 | case 'B': /* The file is intentionally broken */ |
| 228 | expectation = EXP_BROKEN; break; |
| 229 | case 'D': /* Reconstructing should yield different data */ |
| 230 | expectation = EXP_DIFFERENT; break; |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 231 | default: |
| 232 | expectation = EXP_OK; break; |
| 233 | } |
| 234 | |
| 235 | fprintf(stderr, "\nProcessing file [../%s]\n", fname); |
| 236 | |
| 237 | ret = chdir("../data-70"); |
| 238 | assert(ret == 0); |
| 239 | fp = fopen(fname, "r"); |
| 240 | ret = chdir("../test-check-70"); |
| 241 | assert(ret == 0); |
| 242 | assert(fp); |
| 243 | |
| 244 | rd = fread(fbuf, 1, sizeof(fbuf), fp); |
| 245 | fclose(fp); |
| 246 | |
| 247 | assert(rd < sizeof(fbuf)); /* expect small files */ |
| 248 | |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 249 | process_XER_data(expectation, fbuf, rd); |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 250 | |
| 251 | return 1; |
| 252 | } |
| 253 | |
| 254 | int |
| 255 | main() { |
| 256 | DIR *dir; |
| 257 | struct dirent *dent; |
| 258 | int processed_files = 0; |
| 259 | char *str; |
| 260 | |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 261 | /* Process a specific test file */ |
| 262 | str = getenv("DATA_70_FILE"); |
| 263 | if(str && strncmp(str, "data-70-", 8) == 0) |
| 264 | process(str); |
| 265 | |
Lev Walkin | a85b37d | 2005-02-18 10:13:44 +0000 | [diff] [blame^] | 266 | dir = opendir("../data-70"); |
| 267 | assert(dir); |
| 268 | |
| 269 | /* |
| 270 | * Process each file in that directory. |
| 271 | */ |
Lev Walkin | 3234ecc | 2005-02-14 17:20:23 +0000 | [diff] [blame] | 272 | while((dent = readdir(dir))) { |
| 273 | if(strncmp(dent->d_name, "data-70-", 8) == 0) |
| 274 | if(process(dent->d_name)) |
| 275 | processed_files++; |
| 276 | } |
| 277 | |
| 278 | assert(processed_files); |
| 279 | closedir(dir); |
| 280 | |
| 281 | return 0; |
| 282 | } |
| 283 | |