implement TeletexString
[heimdal.git] / lib / asn1 / gen_length.c
blobe1f045c4c5932791684c162615d7aec300194fe7
1 /*
2 * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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
31 * SUCH DAMAGE.
34 #include "gen_locl.h"
36 RCSID("$Id$");
38 static void
39 length_primitive (const char *typename,
40 const char *name,
41 const char *variable)
43 fprintf (codefile, "%s += der_length_%s(%s);\n", variable, typename, name);
46 static size_t
47 length_tag(unsigned int tag)
49 size_t len = 0;
51 if(tag <= 30)
52 return 1;
53 while(tag) {
54 tag /= 128;
55 len++;
57 return len + 1;
61 static int
62 length_type (const char *name, const Type *t,
63 const char *variable, const char *tmpstr)
65 switch (t->type) {
66 case TType:
67 #if 0
68 length_type (name, t->symbol->type);
69 #endif
70 fprintf (codefile, "%s += length_%s(%s);\n",
71 variable, t->symbol->gen_name, name);
72 break;
73 case TInteger:
74 if(t->members) {
75 fprintf(codefile,
76 "{\n"
77 "int enumint = *%s;\n", name);
78 length_primitive ("integer", "&enumint", variable);
79 fprintf(codefile, "}\n");
80 } else if (t->range == NULL) {
81 length_primitive ("heim_integer", name, variable);
82 } else if (t->range->min == INT_MIN && t->range->max == INT_MAX) {
83 length_primitive ("integer", name, variable);
84 } else if (t->range->min == 0 && t->range->max == UINT_MAX) {
85 length_primitive ("unsigned", name, variable);
86 } else if (t->range->min == 0 && t->range->max == INT_MAX) {
87 length_primitive ("unsigned", name, variable);
88 } else
89 errx(1, "%s: unsupported range %d -> %d",
90 name, t->range->min, t->range->max);
92 break;
93 case TBoolean:
94 fprintf (codefile, "%s += 1;\n", variable);
95 break;
96 case TEnumerated :
97 length_primitive ("enumerated", name, variable);
98 break;
99 case TOctetString:
100 length_primitive ("octet_string", name, variable);
101 break;
102 case TBitString: {
103 if (ASN1_TAILQ_EMPTY(t->members))
104 length_primitive("bit_string", name, variable);
105 else {
106 if (!rfc1510_bitstring) {
107 Member *m;
108 int pos = ASN1_TAILQ_LAST(t->members, memhead)->val;
110 fprintf(codefile,
111 "do {\n");
112 ASN1_TAILQ_FOREACH_REVERSE(m, t->members, memhead, members) {
113 while (m->val / 8 < pos / 8) {
114 pos -= 8;
116 fprintf (codefile,
117 "if((%s)->%s) { %s += %d; break; }\n",
118 name, m->gen_name, variable, (pos + 8) / 8);
120 fprintf(codefile,
121 "} while(0);\n");
122 fprintf (codefile, "%s += 1;\n", variable);
123 } else {
124 fprintf (codefile, "%s += 5;\n", variable);
127 break;
129 case TSet:
130 case TSequence:
131 case TChoice: {
132 Member *m, *have_ellipsis = NULL;
134 if (t->members == NULL)
135 break;
137 if(t->type == TChoice)
138 fprintf (codefile, "switch((%s)->element) {\n", name);
140 ASN1_TAILQ_FOREACH(m, t->members, members) {
141 char *s;
143 if (m->ellipsis) {
144 have_ellipsis = m;
145 continue;
148 if(t->type == TChoice)
149 fprintf(codefile, "case %s:\n", m->label);
151 asprintf (&s, "%s(%s)->%s%s",
152 m->optional ? "" : "&", name,
153 t->type == TChoice ? "u." : "", m->gen_name);
154 if (s == NULL)
155 errx(1, "malloc");
156 if (m->optional)
157 fprintf (codefile, "if(%s)", s);
158 else if(m->defval)
159 gen_compare_defval(s + 1, m->defval);
160 fprintf (codefile, "{\n"
161 "size_t %s_oldret = %s;\n"
162 "%s = 0;\n", tmpstr, variable, variable);
163 length_type (s, m->type, "ret", m->gen_name);
164 fprintf (codefile, "ret += %s_oldret;\n", tmpstr);
165 fprintf (codefile, "}\n");
166 free (s);
167 if(t->type == TChoice)
168 fprintf(codefile, "break;\n");
170 if(t->type == TChoice) {
171 if (have_ellipsis)
172 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 fprintf (codefile, "}\n"); /* switch */
181 break;
183 case TSetOf:
184 case TSequenceOf: {
185 char *n;
186 char *sname;
188 fprintf (codefile,
189 "{\n"
190 "int %s_oldret = %s;\n"
191 "int i;\n"
192 "%s = 0;\n",
193 tmpstr, variable, variable);
195 fprintf (codefile, "for(i = (%s)->len - 1; i >= 0; --i){\n", name);
196 fprintf (codefile, "int %s_for_oldret = %s;\n"
197 "%s = 0;\n", tmpstr, variable, variable);
198 asprintf (&n, "&(%s)->val[i]", name);
199 if (n == NULL)
200 errx(1, "malloc");
201 asprintf (&sname, "%s_S_Of", tmpstr);
202 if (sname == NULL)
203 errx(1, "malloc");
204 length_type(n, t->subtype, variable, sname);
205 fprintf (codefile, "%s += %s_for_oldret;\n",
206 variable, tmpstr);
207 fprintf (codefile, "}\n");
209 fprintf (codefile,
210 "%s += %s_oldret;\n"
211 "}\n", variable, tmpstr);
212 free(n);
213 free(sname);
214 break;
216 case TGeneralizedTime:
217 length_primitive ("generalized_time", name, variable);
218 break;
219 case TGeneralString:
220 length_primitive ("general_string", name, variable);
221 break;
222 case TTeletexString:
223 length_primitive ("general_string", name, variable);
224 break;
225 case TUTCTime:
226 length_primitive ("utctime", name, variable);
227 break;
228 case TUTF8String:
229 length_primitive ("utf8string", name, variable);
230 break;
231 case TPrintableString:
232 length_primitive ("printable_string", name, variable);
233 break;
234 case TIA5String:
235 length_primitive ("ia5_string", name, variable);
236 break;
237 case TBMPString:
238 length_primitive ("bmp_string", name, variable);
239 break;
240 case TUniversalString:
241 length_primitive ("universal_string", name, variable);
242 break;
243 case TVisibleString:
244 length_primitive ("visible_string", name, variable);
245 break;
246 case TNull:
247 fprintf (codefile, "/* NULL */\n");
248 break;
249 case TTag:{
250 char *tname;
251 asprintf(&tname, "%s_tag", tmpstr);
252 if (tname == NULL)
253 errx(1, "malloc");
254 length_type (name, t->subtype, variable, tname);
255 fprintf (codefile, "ret += %lu + der_length_len (ret);\n",
256 (unsigned long)length_tag(t->tag.tagvalue));
257 free(tname);
258 break;
260 case TOID:
261 length_primitive ("oid", name, variable);
262 break;
263 default :
264 abort ();
266 return 0;
269 void
270 generate_type_length (const Symbol *s)
272 fprintf (headerfile,
273 "size_t length_%s(const %s *);\n",
274 s->gen_name, s->gen_name);
276 fprintf (codefile,
277 "size_t\n"
278 "length_%s(const %s *data)\n"
279 "{\n"
280 "size_t ret = 0;\n",
281 s->gen_name, s->gen_name);
283 length_type ("data", s->type, "ret", "Top");
284 fprintf (codefile, "return ret;\n}\n\n");