2 * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
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.
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.
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
36 RCSID("$Id: gen_encode.c,v 1.19 2005/08/23 11:52:16 lha Exp $");
39 encode_primitive (const char *typename, const char *name)
42 "e = der_put_%s(p, len, %s, &l);\n"
43 "if (e) return e;\np -= l; len -= l; ret += l;\n\n",
49 classname(Der_class class)
51 const char *cn[] = { "ASN1_C_UNIV", "ASN1_C_APPL",
52 "ASN1_C_CONTEXT", "ASN1_C_PRIV" };
53 if(class < ASN1_C_UNIV || class > ASN1_C_PRIVATE)
60 valuename(Der_class class, int value)
67 #define X(Y) { Y, #Y }
75 X(UT_GeneralizedTime),
82 X(UT_ObjectDescriptor),
84 X(UT_PrintableString),
92 X(UT_UniversalString),
98 if(class == ASN1_C_UNIV) {
99 for(p = values; p->value != -1; p++)
100 if(p->value == value)
103 snprintf(s, sizeof(s), "%d", value);
108 encode_type (const char *name, const Type *t, const char *tmpstr)
115 encode_type (name, t->symbol->type);
118 "e = encode_%s(p, len, %s, &l);\n"
119 "if (e) return e;\np -= l; len -= l; ret += l;\n\n",
120 t->symbol->gen_name, name);
125 asprintf(&s, "(const int*)%s", name);
127 errx(1, "out of memory");
128 encode_primitive ("integer", s);
130 } else if (t->range == NULL) {
131 encode_primitive ("heim_integer", name);
132 } else if (t->range->min == INT_MIN && t->range->max == INT_MAX) {
133 encode_primitive ("integer", name);
134 } else if (t->range->min == 0 && t->range->max == UINT_MAX) {
135 encode_primitive ("unsigned", name);
136 } else if (t->range->min == 0 && t->range->max == INT_MAX) {
137 encode_primitive ("unsigned", name);
139 errx(1, "%s: unsupported range %d -> %d",
140 name, t->range->min, t->range->max);
144 encode_primitive ("boolean", name);
148 encode_primitive ("octet_string", name);
156 if (ASN1_TAILQ_EMPTY(t->members)) {
157 encode_primitive("bit_string", name);
162 fprintf (codefile, "{\n"
163 "unsigned char c = 0;\n");
164 if (!rfc1510_bitstring)
166 "int bit_set = 0;\n");
168 pos = t->members->prev->val;
169 /* fix for buggy MIT (and OSF?) code */
174 * It seems that if we do not always set pos to 31 here, the MIT
175 * code will do the wrong thing.
177 * I hate ASN.1 (and DER), but I hate it even more when everybody
178 * has to screw it up differently.
180 pos = ASN1_TAILQ_LAST(t->members, memhead)->val;
181 if (rfc1510_bitstring) {
184 rest = 7 - (pos % 8);
188 ASN1_TAILQ_FOREACH_REVERSE(m, t->members, memhead, members) {
189 while (m->val / 8 < pos / 8) {
190 if (!rfc1510_bitstring)
192 "if (c != 0 || bit_set) {\n");
194 "if (len < 1) return ASN1_OVERFLOW;\n"
195 "*p-- = c; len--; ret++;\n"
197 if (!rfc1510_bitstring)
206 name, m->gen_name, 7 - m->val % 8);
207 if (!rfc1510_bitstring)
208 rest = 7 - m->val % 8;
213 if (!rfc1510_bitstring)
215 "if (c != 0 || bit_set) {\n");
217 "if (len < 1) return ASN1_OVERFLOW;\n"
218 "*p-- = c; len--; ret++;\n");
219 if (!rfc1510_bitstring)
224 "if (len < 1) return ASN1_OVERFLOW;\n"
234 encode_primitive ("enumerated", name);
243 if (t->members == NULL)
246 ASN1_TAILQ_FOREACH_REVERSE(m, t->members, memhead, members) {
252 asprintf (&s, "%s(%s)->%s", m->optional ? "" : "&", name, m->gen_name);
255 fprintf(codefile, "/* %s */\n", m->name);
261 gen_compare_defval(s + 1, m->defval);
262 fprintf (codefile, "{\n");
263 fprintf (codefile, "size_t %s_oldret = ret;\n", tmpstr);
264 fprintf (codefile, "ret = 0;\n");
265 encode_type (s, m->type, m->gen_name);
266 fprintf (codefile, "ret += %s_oldret;\n", tmpstr);
267 fprintf (codefile, "}\n");
276 "struct heim_octet_string *val;\n"
277 "size_t elen, totallen = 0;\n"
281 "val = malloc(sizeof(val[0]) * (%s)->len);\n"
282 "if (val == NULL && (%s)->len != 0) return ENOMEM;\n",
286 "for(i = 0; i < (%s)->len; i++) {\n",
290 "ASN1_MALLOC_ENCODE(%s, val[i].data, "
291 "val[i].length, &(%s)->val[i], &elen, eret);\n",
292 t->subtype->symbol->gen_name,
299 "free(val[i].data);\n"
305 "totallen += elen;\n"
309 "if (totallen > len) {\n"
310 "for (i = 0; i < (%s)->len; i++) {\n"
311 "free(val[i].data);\n"
314 "return ASN1_OVERFLOW;\n"
319 "qsort(val, (%s)->len, sizeof(val[0]), _heim_der_set_sort);\n",
323 "for(i = (%s)->len - 1; i >= 0; --i) {\n"
324 "p -= val[i].length;\n"
325 "ret += val[i].length;\n"
326 "memcpy(p + 1, val[i].data, val[i].length);\n"
327 "free(val[i].data);\n"
339 "for(i = (%s)->len - 1; i >= 0; --i) {\n"
340 "size_t %s_for_oldret = ret;\n"
343 asprintf (&n, "&(%s)->val[i]", name);
346 asprintf (&sname, "%s_S_Of", tmpstr);
349 encode_type (n, t->subtype, sname);
351 "ret += %s_for_oldret;\n"
358 case TGeneralizedTime:
359 encode_primitive ("generalized_time", name);
363 encode_primitive ("general_string", name);
369 asprintf (&tname, "%s_tag", tmpstr);
372 c = encode_type (name, t->subtype, tname);
374 "e = der_put_length_and_tag (p, len, ret, %s, %s, %s, &l);\n"
375 "if (e) return e;\np -= l; len -= l; ret += l;\n\n",
376 classname(t->tag.tagclass),
378 valuename(t->tag.tagclass, t->tag.tagvalue));
383 Member *m, *have_ellipsis = NULL;
386 if (t->members == NULL)
389 fprintf(codefile, "\n");
391 asprintf (&s, "(%s)", name);
394 fprintf(codefile, "switch(%s->element) {\n", s);
396 ASN1_TAILQ_FOREACH_REVERSE(m, t->members, memhead, members) {
404 fprintf (codefile, "case %s: {", m->label);
405 asprintf(&s2, "%s(%s)->u.%s", m->optional ? "" : "&",
410 fprintf (codefile, "if(%s) {\n", s2);
411 fprintf (codefile, "size_t %s_oldret = ret;\n", tmpstr);
412 fprintf (codefile, "ret = 0;\n");
413 constructed = encode_type (s2, m->type, m->gen_name);
414 fprintf (codefile, "ret += %s_oldret;\n", tmpstr);
416 fprintf (codefile, "}\n");
417 fprintf(codefile, "break;\n");
418 fprintf(codefile, "}\n");
425 "if (len < (%s)->u.%s.length)\n"
426 "return ASN1_OVERFLOW;\n"
427 "p -= (%s)->u.%s.length;\n"
428 "ret += (%s)->u.%s.length;\n"
429 "memcpy(p + 1, (%s)->u.%s.data, (%s)->u.%s.length);\n"
432 have_ellipsis->label,
433 name, have_ellipsis->gen_name,
434 name, have_ellipsis->gen_name,
435 name, have_ellipsis->gen_name,
436 name, have_ellipsis->gen_name,
437 name, have_ellipsis->gen_name);
439 fprintf(codefile, "};\n");
443 encode_primitive ("oid", name);
447 encode_primitive ("utctime", name);
451 encode_primitive ("utf8string", name);
454 case TPrintableString:
455 encode_primitive ("printable_string", name);
459 encode_primitive ("ia5_string", name);
463 encode_primitive ("bmp_string", name);
466 case TUniversalString:
467 encode_primitive ("universal_string", name);
471 fprintf (codefile, "/* NULL */\n");
481 generate_type_encode (const Symbol *s)
485 "encode_%s(unsigned char *, size_t, const %s *, size_t *);\n",
486 s->gen_name, s->gen_name);
488 fprintf (codefile, "int\n"
489 "encode_%s(unsigned char *p, size_t len,"
490 " const %s *data, size_t *size)\n"
492 s->gen_name, s->gen_name);
494 switch (s->type->type) {
498 case TGeneralizedTime:
502 case TPrintableString:
505 case TUniversalString:
521 fprintf(codefile, "i = 0;\n"); /* hack to avoid `unused variable' */
523 encode_type("data", s->type, "Top");
525 fprintf (codefile, "*size = ret;\n"
531 fprintf (codefile, "}\n\n");