source: heimdal/trunk/lib/asn1/gen_copy.c

Last change on this file was 1, checked in by Paul Smedley, 10 years ago

Initial commit of Heimdal 1.5.3
File size: 6.7 KB
Line 
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
36RCSID("$Id$");
37
38static int used_fail;
39
40static void
41copy_primitive (const char *typename, const char *from, const char *to)
42{
43 fprintf (codefile, "if(der_copy_%s(%s, %s)) goto fail;\n",
44 typename, from, to);
45 used_fail++;
46}
47
48static void
49copy_type (const char *from, const char *to, const Type *t, int preserve)
50{
51 switch (t->type) {
52 case TType:
53#if 0
54 copy_type (from, to, t->symbol->type, preserve);
55#endif
56 fprintf (codefile, "if(copy_%s(%s, %s)) goto fail;\n",
57 t->symbol->gen_name, from, to);
58 used_fail++;
59 break;
60 case TInteger:
61 if (t->range == NULL && t->members == NULL) {
62 copy_primitive ("heim_integer", from, to);
63 break;
64 }
65 case TBoolean:
66 case TEnumerated :
67 fprintf(codefile, "*(%s) = *(%s);\n", to, from);
68 break;
69 case TOctetString:
70 copy_primitive ("octet_string", from, to);
71 break;
72 case TBitString:
73 if (ASN1_TAILQ_EMPTY(t->members))
74 copy_primitive ("bit_string", from, to);
75 else
76 fprintf(codefile, "*(%s) = *(%s);\n", to, from);
77 break;
78 case TSet:
79 case TSequence:
80 case TChoice: {
81 Member *m, *have_ellipsis = NULL;
82
83 if(t->members == NULL)
84 break;
85
86 if ((t->type == TSequence || t->type == TChoice) && preserve) {
87 fprintf(codefile,
88 "{ int ret;\n"
89 "ret = der_copy_octet_string(&(%s)->_save, &(%s)->_save);\n"
90 "if (ret) goto fail;\n"
91 "}\n",
92 from, to);
93 used_fail++;
94 }
95
96 if(t->type == TChoice) {
97 fprintf(codefile, "(%s)->element = (%s)->element;\n", to, from);
98 fprintf(codefile, "switch((%s)->element) {\n", from);
99 }
100
101 ASN1_TAILQ_FOREACH(m, t->members, members) {
102 char *fs;
103 char *ts;
104
105 if (m->ellipsis) {
106 have_ellipsis = m;
107 continue;
108 }
109
110 if(t->type == TChoice)
111 fprintf(codefile, "case %s:\n", m->label);
112
113 if (asprintf (&fs, "%s(%s)->%s%s",
114 m->optional ? "" : "&", from,
115 t->type == TChoice ? "u." : "", m->gen_name) < 0)
116 errx(1, "malloc");
117 if (fs == NULL)
118 errx(1, "malloc");
119 if (asprintf (&ts, "%s(%s)->%s%s",
120 m->optional ? "" : "&", to,
121 t->type == TChoice ? "u." : "", m->gen_name) < 0)
122 errx(1, "malloc");
123 if (ts == NULL)
124 errx(1, "malloc");
125 if(m->optional){
126 fprintf(codefile, "if(%s) {\n", fs);
127 fprintf(codefile, "%s = malloc(sizeof(*%s));\n", ts, ts);
128 fprintf(codefile, "if(%s == NULL) goto fail;\n", ts);
129 used_fail++;
130 }
131 copy_type (fs, ts, m->type, FALSE);
132 if(m->optional){
133 fprintf(codefile, "}else\n");
134 fprintf(codefile, "%s = NULL;\n", ts);
135 }
136 free (fs);
137 free (ts);
138 if(t->type == TChoice)
139 fprintf(codefile, "break;\n");
140 }
141 if(t->type == TChoice) {
142 if (have_ellipsis) {
143 fprintf(codefile, "case %s: {\n"
144 "int ret;\n"
145 "ret=der_copy_octet_string(&(%s)->u.%s, &(%s)->u.%s);\n"
146 "if (ret) goto fail;\n"
147 "break;\n"
148 "}\n",
149 have_ellipsis->label,
150 from, have_ellipsis->gen_name,
151 to, have_ellipsis->gen_name);
152 used_fail++;
153 }
154 fprintf(codefile, "}\n");
155 }
156 break;
157 }
158 case TSetOf:
159 case TSequenceOf: {
160 char *f = NULL, *T = NULL;
161
162 fprintf (codefile, "if(((%s)->val = "
163 "malloc((%s)->len * sizeof(*(%s)->val))) == NULL && (%s)->len != 0)\n",
164 to, from, to, from);
165 fprintf (codefile, "goto fail;\n");
166 used_fail++;
167 fprintf(codefile,
168 "for((%s)->len = 0; (%s)->len < (%s)->len; (%s)->len++){\n",
169 to, to, from, to);
170 if (asprintf(&f, "&(%s)->val[(%s)->len]", from, to) < 0)
171 errx(1, "malloc");
172 if (f == NULL)
173 errx(1, "malloc");
174 if (asprintf(&T, "&(%s)->val[(%s)->len]", to, to) < 0)
175 errx(1, "malloc");
176 if (T == NULL)
177 errx(1, "malloc");
178 copy_type(f, T, t->subtype, FALSE);
179 fprintf(codefile, "}\n");
180 free(f);
181 free(T);
182 break;
183 }
184 case TGeneralizedTime:
185 fprintf(codefile, "*(%s) = *(%s);\n", to, from);
186 break;
187 case TGeneralString:
188 copy_primitive ("general_string", from, to);
189 break;
190 case TTeletexString:
191 copy_primitive ("general_string", from, to);
192 break;
193 case TUTCTime:
194 fprintf(codefile, "*(%s) = *(%s);\n", to, from);
195 break;
196 case TUTF8String:
197 copy_primitive ("utf8string", from, to);
198 break;
199 case TPrintableString:
200 copy_primitive ("printable_string", from, to);
201 break;
202 case TIA5String:
203 copy_primitive ("ia5_string", from, to);
204 break;
205 case TBMPString:
206 copy_primitive ("bmp_string", from, to);
207 break;
208 case TUniversalString:
209 copy_primitive ("universal_string", from, to);
210 break;
211 case TVisibleString:
212 copy_primitive ("visible_string", from, to);
213 break;
214 case TTag:
215 copy_type (from, to, t->subtype, preserve);
216 break;
217 case TOID:
218 copy_primitive ("oid", from, to);
219 break;
220 case TNull:
221 break;
222 default :
223 abort ();
224 }
225}
226
227void
228generate_type_copy (const Symbol *s)
229{
230 int preserve = preserve_type(s->name) ? TRUE : FALSE;
231
232 used_fail = 0;
233
234 fprintf (codefile, "int ASN1CALL\n"
235 "copy_%s(const %s *from, %s *to)\n"
236 "{\n"
237 "memset(to, 0, sizeof(*to));\n",
238 s->gen_name, s->gen_name, s->gen_name);
239 copy_type ("from", "to", s->type, preserve);
240 fprintf (codefile, "return 0;\n");
241
242 if (used_fail)
243 fprintf (codefile, "fail:\n"
244 "free_%s(to);\n"
245 "return ENOMEM;\n",
246 s->gen_name);
247
248 fprintf(codefile,
249 "}\n\n");
250}
251
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