Line data Source code
1 : /*
2 : * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
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 : #include "gen_locl.h"
35 :
36 : RCSID("$Id$");
37 :
38 : static void
39 988 : length_primitive (const char *typename,
40 : const char *name,
41 : const char *variable)
42 : {
43 990 : fprintf (codefile, "%s += der_length_%s(%s);\n", variable, typename, name);
44 986 : }
45 :
46 : /* XXX same as der_length_tag */
47 : static size_t
48 3819 : length_tag(unsigned int tag)
49 : {
50 3819 : size_t len = 0;
51 :
52 3819 : if(tag <= 30)
53 3618 : return 1;
54 0 : while(tag) {
55 0 : tag /= 128;
56 0 : len++;
57 : }
58 0 : return len + 1;
59 : }
60 :
61 :
62 : static int
63 7486 : length_type (const char *name, const Type *t,
64 : const char *variable, const char *tmpstr)
65 : {
66 7486 : switch (t->type) {
67 1539 : case TType:
68 : #if 0
69 : length_type (name, t->symbol->type);
70 : #endif
71 1933 : fprintf (codefile, "%s += length_%s(%s);\n",
72 1539 : variable, t->symbol->gen_name, name);
73 1458 : break;
74 418 : case TInteger:
75 418 : if(t->members) {
76 38 : fprintf(codefile,
77 : "{\n"
78 : "int enumint = *%s;\n", name);
79 38 : length_primitive ("integer", "&enumint", variable);
80 38 : fprintf(codefile, "}\n");
81 380 : } else if (t->range == NULL) {
82 76 : length_primitive ("heim_integer", name, variable);
83 304 : } else if (t->range->min < 0 &&
84 56 : (t->range->min < INT_MIN || t->range->max > INT_MAX)) {
85 19 : length_primitive ("integer64", name, variable);
86 285 : } else if (t->range->min < 0) {
87 38 : length_primitive ("integer", name, variable);
88 247 : } else if (t->range->max > UINT_MAX) {
89 0 : length_primitive ("unsigned64", name, variable);
90 : } else {
91 247 : length_primitive ("unsigned", name, variable);
92 : }
93 396 : break;
94 38 : case TBoolean:
95 38 : fprintf (codefile, "%s += 1;\n", variable);
96 36 : break;
97 0 : case TEnumerated :
98 0 : length_primitive ("enumerated", name, variable);
99 0 : break;
100 252 : case TOctetString:
101 266 : length_primitive ("octet_string", name, variable);
102 252 : break;
103 190 : case TBitString: {
104 190 : if (HEIM_TAILQ_EMPTY(t->members))
105 133 : length_primitive("bit_string", name, variable);
106 : else {
107 57 : if (!rfc1510_bitstring) {
108 3 : Member *m;
109 57 : int pos = HEIM_TAILQ_LAST(t->members, memhead)->val;
110 :
111 57 : fprintf(codefile,
112 : "do {\n");
113 741 : HEIM_TAILQ_FOREACH_REVERSE(m, t->members, memhead, members) {
114 741 : while (m->val / 8 < pos / 8) {
115 57 : pos -= 8;
116 : }
117 684 : fprintf (codefile,
118 : "if((%s)->%s) { %s += %d; break; }\n",
119 684 : name, m->gen_name, variable, (pos + 8) / 8);
120 : }
121 57 : fprintf(codefile,
122 : "} while(0);\n");
123 57 : fprintf (codefile, "%s += 1;\n", variable);
124 : } else {
125 0 : fprintf (codefile, "%s += 5;\n", variable);
126 : }
127 : }
128 180 : break;
129 : }
130 722 : case TSet:
131 : case TSequence:
132 : case TChoice: {
133 722 : Member *m, *have_ellipsis = NULL;
134 :
135 722 : if (t->members == NULL)
136 0 : break;
137 :
138 722 : if(t->type == TChoice)
139 171 : fprintf (codefile, "switch((%s)->element) {\n", name);
140 :
141 3287 : HEIM_TAILQ_FOREACH(m, t->members, members) {
142 135 : char *s;
143 :
144 2565 : if (m->ellipsis) {
145 114 : have_ellipsis = m;
146 114 : continue;
147 : }
148 :
149 2451 : if(t->type == TChoice)
150 627 : fprintf(codefile, "case %s:\n", m->label);
151 :
152 4773 : if (asprintf (&s, "%s(%s)->%s%s",
153 2451 : m->optional ? "" : "&", name,
154 4902 : t->type == TChoice ? "u." : "", m->gen_name) < 0 || s == NULL)
155 0 : errx(1, "malloc");
156 2451 : if (m->optional)
157 950 : fprintf (codefile, "if(%s)", s);
158 1501 : else if(m->defval)
159 0 : gen_compare_defval(s + 1, m->defval);
160 2451 : fprintf (codefile, "{\n"
161 : "size_t %s_oldret = %s;\n"
162 : "%s = 0;\n", tmpstr, variable, variable);
163 2451 : length_type (s, m->type, "ret", m->gen_name);
164 2451 : fprintf (codefile, "ret += %s_oldret;\n", tmpstr);
165 2451 : fprintf (codefile, "}\n");
166 2451 : free (s);
167 2451 : if(t->type == TChoice)
168 723 : fprintf(codefile, "break;\n");
169 : }
170 722 : if(t->type == TChoice) {
171 171 : if (have_ellipsis)
172 19 : fprintf(codefile,
173 : "case %s:\n"
174 : "ret += (%s)->u.%s.length;\n"
175 : "break;\n",
176 : have_ellipsis->label,
177 : name,
178 : have_ellipsis->gen_name);
179 171 : fprintf (codefile, "}\n"); /* switch */
180 : }
181 684 : break;
182 : }
183 304 : case TSetOf:
184 : case TSequenceOf: {
185 304 : char *n = NULL;
186 304 : char *sname = NULL;
187 :
188 304 : fprintf (codefile,
189 : "{\n"
190 : "size_t %s_oldret = %s;\n"
191 : "unsigned int n_%s;\n"
192 : "%s = 0;\n",
193 : tmpstr, variable, tmpstr, variable);
194 :
195 304 : fprintf (codefile, "for(n_%s = (%s)->len; n_%s > 0; --n_%s){\n",
196 : tmpstr, name, tmpstr, tmpstr);
197 304 : fprintf (codefile, "size_t %s_for_oldret = %s;\n"
198 : "%s = 0;\n", tmpstr, variable, variable);
199 304 : if (asprintf (&n, "&(%s)->val[n_%s - 1]", name, tmpstr) < 0 || n == NULL)
200 0 : errx(1, "malloc");
201 304 : if (asprintf (&sname, "%s_S_Of", tmpstr) < 0 || sname == NULL)
202 0 : errx(1, "malloc");
203 304 : length_type(n, t->subtype, variable, sname);
204 304 : fprintf (codefile, "%s += %s_for_oldret;\n",
205 : variable, tmpstr);
206 304 : fprintf (codefile, "}\n");
207 :
208 304 : fprintf (codefile,
209 : "%s += %s_oldret;\n"
210 : "}\n", variable, tmpstr);
211 304 : free(n);
212 304 : free(sname);
213 304 : break;
214 : }
215 0 : case TGeneralizedTime:
216 0 : length_primitive ("generalized_time", name, variable);
217 0 : break;
218 18 : case TGeneralString:
219 19 : length_primitive ("general_string", name, variable);
220 18 : break;
221 0 : case TTeletexString:
222 0 : length_primitive ("general_string", name, variable);
223 0 : break;
224 0 : case TUTCTime:
225 0 : length_primitive ("utctime", name, variable);
226 0 : break;
227 72 : case TUTF8String:
228 76 : length_primitive ("utf8string", name, variable);
229 72 : break;
230 0 : case TPrintableString:
231 0 : length_primitive ("printable_string", name, variable);
232 0 : break;
233 0 : case TIA5String:
234 0 : length_primitive ("ia5_string", name, variable);
235 0 : break;
236 0 : case TBMPString:
237 0 : length_primitive ("bmp_string", name, variable);
238 0 : break;
239 0 : case TUniversalString:
240 0 : length_primitive ("universal_string", name, variable);
241 0 : break;
242 0 : case TVisibleString:
243 0 : length_primitive ("visible_string", name, variable);
244 0 : break;
245 19 : case TNull:
246 19 : fprintf (codefile, "/* NULL */\n");
247 18 : break;
248 3819 : case TTag:{
249 3819 : char *tname = NULL;
250 3819 : int replace_tag = 0;
251 9595 : int prim = !(t->tag.tagclass != ASN1_C_UNIV &&
252 5852 : t->tag.tagenv == TE_EXPLICIT) &&
253 2033 : is_primitive_type(t->subtype);
254 :
255 3819 : if (asprintf(&tname, "%s_tag", tmpstr) < 0 || tname == NULL)
256 0 : errx(1, "malloc");
257 3819 : length_type (name, t->subtype, variable, tname);
258 : /* See the comments in encode_type() about IMPLICIT tags */
259 3819 : if (t->tag.tagenv == TE_IMPLICIT && !prim &&
260 114 : t->subtype->type != TSequenceOf && t->subtype->type != TSetOf &&
261 90 : t->subtype->type != TChoice) {
262 95 : if (t->subtype->symbol &&
263 57 : (t->subtype->type == TSequence ||
264 54 : t->subtype->type == TSet))
265 0 : replace_tag = 1;
266 95 : else if (t->subtype->symbol && strcmp(t->subtype->symbol->name, "heim_any"))
267 54 : replace_tag = 1;
268 3724 : } else if (t->tag.tagenv == TE_IMPLICIT && prim && t->subtype->symbol)
269 19 : replace_tag = is_tagged_type(t->subtype->symbol->type);
270 3619 : if (replace_tag)
271 : /*
272 : * We're replacing the tag of the underlying type. If that type is
273 : * imported, then we don't know its tag, so we rely on the
274 : * asn1_tag_tag_<TypeName> enum value we generated for it, and we
275 : * use the asn1_tag_length_<TypeName> enum value to avoid having to
276 : * call der_length_tag() at run-time.
277 : */
278 281 : fprintf(codefile, "ret += %lu - asn1_tag_length_%s;\n",
279 76 : (unsigned long)length_tag(t->tag.tagvalue),
280 76 : t->subtype->symbol->gen_name);
281 : else
282 4141 : fprintf(codefile, "ret += %lu + der_length_len (ret);\n",
283 3743 : (unsigned long)length_tag(t->tag.tagvalue));
284 3819 : free(tname);
285 3819 : break;
286 : }
287 72 : case TOID:
288 76 : length_primitive ("oid", name, variable);
289 72 : break;
290 0 : default :
291 0 : abort ();
292 : }
293 7486 : return 0;
294 : }
295 :
296 : void
297 912 : generate_type_length (const Symbol *s)
298 : {
299 960 : fprintf (codefile,
300 : "size_t ASN1CALL\n"
301 : "length_%s(const %s *data)\n"
302 : "{\n"
303 : "size_t ret = 0;\n",
304 912 : s->gen_name, s->gen_name);
305 :
306 912 : length_type ("data", s->type, "ret", "Top");
307 912 : fprintf (codefile, "return ret;\n}\n\n");
308 912 : }
309 :
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