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 checked against rules specified in ../data-70/README file.
10 #include <sys/types.h>
11 #include <unistd.h> /* for chdir(2), getcwd(3) */
23 #define STRINGIFY_MACRO2(x) #x
24 #define STRINGIFY_MACRO(x) STRINGIFY_MACRO2(x)
25 #define SRCDIR_S STRINGIFY_MACRO(SRCDIR)
28 #ifdef ENABLE_LIBFUZZER
30 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
31 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
34 rval = asn_decode(0, ATS_BASIC_XER, &asn_DEF_PDU, (void **)&st, Data, Size);
35 assert(rval.consumed <= Size);
36 ASN_STRUCT_FREE(asn_DEF_PDU, st);
43 EXP_OK, /* Encoding/decoding must succeed */
44 EXP_CXER_EXACT, /* Encoding/decoding using CXER must be exact */
45 EXP_CXER_DIFF, /* Encoding/decoding using CXER must be different */
46 EXP_BROKEN, /* Decoding must fail */
47 EXP_DIFFERENT, /* Reconstruction will yield different encoding */
50 static unsigned char buf[4096];
51 static int buf_offset;
54 _buf_writer(const void *buffer, size_t size, void *app_key) {
55 unsigned char *b, *bend;
57 assert(buf_offset + size < sizeof(buf));
58 memcpy(buf + buf_offset, buffer, size);
61 fprintf(stderr, "=> [");
62 for(; b < bend; b++) {
63 if(*b >= 32 && *b < 127 && *b != '%')
64 fprintf(stderr, "%c", *b);
66 fprintf(stderr, "%%%02x", *b);
68 fprintf(stderr, "]:%zd\n", size);
74 save_object_as(PDU_t *st, enum asn_transfer_syntax syntax) {
75 asn_enc_rval_t rval; /* Return value */
79 rval = asn_encode(0, syntax, &asn_DEF_PDU, st, _buf_writer, 0);
81 if (rval.encoded == -1) {
83 "Cannot encode %s: %s\n",
84 rval.failed_type->name, strerror(errno));
85 assert(rval.encoded != -1);
89 fprintf(stderr, "SAVED OBJECT IN SIZE %d/%zd\n", buf_offset, rval.encoded);
91 assert(buf_offset == rval.encoded);
95 load_object_from(enum expectation expectation, unsigned char *fbuf, size_t size, enum asn_transfer_syntax syntax) {
100 if(getenv("INITIAL_CHUNK_SIZE"))
101 csize = atoi(getenv("INITIAL_CHUNK_SIZE"));
103 /* Perform multiple iterations with multiple chunks sizes */
104 for(; csize < 20; csize += 1) {
106 int fbuf_left = size;
107 int fbuf_chunk = csize;
109 fprintf(stderr, "LOADING OBJECT OF SIZE %zd, chunks %zd\n",
112 if(st) ASN_STRUCT_FREE(asn_DEF_PDU, st);
116 ASN_DEBUG("Decoding bytes %d..%d (left %d)",
118 fbuf_chunk < fbuf_left
119 ? fbuf_chunk : fbuf_left,
121 #ifdef ASN_EMIT_DEBUG
123 fprintf(stderr, "=== currently ===\n");
124 asn_fprint(stderr, &asn_DEF_PDU, st);
125 fprintf(stderr, "=== end ===\n");
128 rval = asn_decode(0, syntax, &asn_DEF_PDU, (void **)&st,
130 fbuf_chunk < fbuf_left
131 ? fbuf_chunk : fbuf_left);
132 fbuf_offset += rval.consumed;
133 fbuf_left -= rval.consumed;
134 if(rval.code == RC_WMORE)
135 fbuf_chunk += 1; /* Give little more */
137 fbuf_chunk = csize; /* Back off */
138 } while(fbuf_left && rval.code == RC_WMORE);
140 if(expectation != EXP_BROKEN) {
141 assert(rval.code == RC_OK);
142 if(syntax == ATS_BER) {
143 assert(fbuf_offset == (ssize_t)size);
145 assert((fbuf_offset + 1 /* "\n" */ == (ssize_t)size
146 && fbuf[size - 1] == '\n')
147 || (fbuf_offset + 2 /* "\r\n" */ == (ssize_t)size
148 && fbuf[size - 2] == '\r'
149 && fbuf[size - 1] == '\n')
153 assert(rval.code != RC_OK);
154 fprintf(stderr, "Failed, but this was expected\n");
155 ASN_STRUCT_FREE(asn_DEF_PDU, st);
156 st = 0; /* ignore leak for now */
160 if(st) asn_fprint(stderr, &asn_DEF_PDU, st);
165 xer_encoding_equal(void *obufp, size_t osize, void *nbufp, size_t nsize) {
168 char *oend = obuf + osize;
169 char *nend = nbuf + nsize;
171 if((osize && !nsize) || (!osize && nsize))
172 return 0; /* not equal apriori */
175 while(obuf < oend && isspace(*obuf)) obuf++;
176 while(nbuf < nend && isspace(*nbuf)) nbuf++;
178 if(obuf == oend || nbuf == nend) {
179 if(obuf == oend && nbuf == nend)
181 fprintf(stderr, "%s data in reconstructed encoding\n",
182 (obuf == oend) ? "More" : "Less");
187 printf("%c%c != %c%c\n",
199 process_XER_data(enum expectation expectation, unsigned char *fbuf, size_t size) {
202 st = load_object_from(expectation, fbuf, size, ATS_BASIC_XER);
205 /* Save and re-load as DER */
206 save_object_as(st, ATS_DER);
207 ASN_STRUCT_FREE(asn_DEF_PDU, st);
208 st = load_object_from(expectation, buf, buf_offset, ATS_BER);
212 (expectation == EXP_CXER_EXACT
213 || expectation == EXP_CXER_DIFF)
214 ? ATS_CANONICAL_XER : ATS_BASIC_XER);
215 fprintf(stderr, "=== original ===\n");
216 fwrite(fbuf, 1, size, stderr);
217 fprintf(stderr, "=== re-encoded ===\n");
218 fwrite(buf, 1, buf_offset, stderr);
219 fprintf(stderr, "=== end ===\n");
221 switch(expectation) {
223 assert(!xer_encoding_equal(fbuf, size, buf, buf_offset));
226 assert(!xer_encoding_equal(fbuf, size, buf, buf_offset));
229 buf[buf_offset++] = '\n';
230 assert((ssize_t)size == buf_offset);
231 assert(memcmp(fbuf, buf, size) == 0);
234 buf[buf_offset++] = '\n';
235 assert((ssize_t)size != buf_offset
236 || memcmp(fbuf, buf, size));
239 assert(xer_encoding_equal(fbuf, size, buf, buf_offset));
243 ASN_STRUCT_FREE(asn_DEF_PDU, st);
247 * Decode the .der files and try to regenerate them.
250 process(const char *fname) {
252 unsigned char fbuf[4096];
253 char *ext = strrchr(fname, '.');
254 enum expectation expectation;
260 if(ext == 0 || strcmp(ext, ".in"))
264 case 'B': /* The file is intentionally broken */
265 expectation = EXP_BROKEN; break;
266 case 'D': /* Reconstructing should yield different data */
267 expectation = EXP_DIFFERENT; break;
268 case 'E': /* Byte to byte exact reconstruction */
269 expectation = EXP_CXER_EXACT; break;
270 case 'X': /* Should fail byte-to-byte comparison */
271 expectation = EXP_CXER_DIFF; break;
273 expectation = EXP_OK; break;
276 fprintf(stderr, "\nProcessing file [../%s]\n", fname);
278 cwd = getcwd(prevdir, sizeof(prevdir));
280 ret = chdir(SRCDIR_S "/data-70");
282 fp = fopen(fname, "r");
283 ret = chdir(prevdir);
287 rd = fread(fbuf, 1, sizeof(fbuf), fp);
290 assert(rd < (ssize_t)sizeof(fbuf)); /* expect small files */
292 process_XER_data(expectation, fbuf, rd);
301 int processed_files = 0;
304 /* Process a specific test file */
305 str = getenv("DATA_70_FILE");
306 if(str && strncmp(str, "data-70-", 8) == 0) {
311 dir = opendir(SRCDIR_S "/data-70");
315 * Process each file in that directory.
317 while((dent = readdir(dir))) {
318 if(strncmp(dent->d_name, "data-70-", 8) == 0)
319 if(process(dent->d_name))
323 assert(processed_files);