1/* 2 * Copyright (c) 1997 - 2005 Kungliga Tekniska H��gskolan 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 void 39length_primitive (const char *typename, 40 const char *name, 41 const char *variable) 42{ 43 fprintf (codefile, "%s += der_length_%s(%s);\n", variable, typename, name); 44} 45 46/* XXX same as der_length_tag */ 47static size_t 48length_tag(unsigned int tag) 49{ 50 size_t len = 0; 51 52 if(tag <= 30) 53 return 1; 54 while(tag) { 55 tag /= 128; 56 len++; 57 } 58 return len + 1; 59} 60 61 62static int 63length_type (const char *name, const Type *t, 64 const char *variable, const char *tmpstr) 65{ 66 switch (t->type) { 67 case TType: 68#if 0 69 length_type (name, t->symbol->type); 70#endif 71 fprintf (codefile, "%s += length_%s(%s);\n", 72 variable, t->symbol->gen_name, name); 73 break; 74 case TInteger: 75 if(t->members) { 76 fprintf(codefile, 77 "{\n" 78 "int enumint = *%s;\n", name); 79 length_primitive ("integer", "&enumint", variable); 80 fprintf(codefile, "}\n"); 81 } else if (t->range == NULL) { 82 length_primitive ("heim_integer", name, variable); 83 } else if (t->range->min == INT_MIN && t->range->max == INT_MAX) { 84 length_primitive ("integer", name, variable); 85 } else if (t->range->min == 0 && t->range->max == UINT_MAX) { 86 length_primitive ("unsigned", name, variable); 87 } else if (t->range->min == 0 && t->range->max == INT_MAX) { 88 length_primitive ("unsigned", name, variable); 89 } else 90 errx(1, "%s: unsupported range %d -> %d", 91 name, t->range->min, t->range->max); 92 93 break; 94 case TBoolean: 95 fprintf (codefile, "%s += 1;\n", variable); 96 break; 97 case TEnumerated : 98 length_primitive ("enumerated", name, variable); 99 break; 100 case TOctetString: 101 length_primitive ("octet_string", name, variable); 102 break; 103 case TBitString: { 104 if (ASN1_TAILQ_EMPTY(t->members)) 105 length_primitive("bit_string", name, variable); 106 else { 107 if (!rfc1510_bitstring) { 108 Member *m; 109 int pos = ASN1_TAILQ_LAST(t->members, memhead)->val; 110 111 fprintf(codefile, 112 "do {\n"); 113 ASN1_TAILQ_FOREACH_REVERSE(m, t->members, memhead, members) { 114 while (m->val / 8 < pos / 8) { 115 pos -= 8; 116 } 117 fprintf (codefile, 118 "if((%s)->%s) { %s += %d; break; }\n", 119 name, m->gen_name, variable, (pos + 8) / 8); 120 } 121 fprintf(codefile, 122 "} while(0);\n"); 123 fprintf (codefile, "%s += 1;\n", variable); 124 } else { 125 fprintf (codefile, "%s += 5;\n", variable); 126 } 127 } 128 break; 129 } 130 case TSet: 131 case TSequence: 132 case TChoice: { 133 Member *m, *have_ellipsis = NULL; 134 135 if (t->members == NULL) 136 break; 137 138 if(t->type == TChoice) 139 fprintf (codefile, "switch((%s)->element) {\n", name); 140 141 ASN1_TAILQ_FOREACH(m, t->members, members) { 142 char *s; 143 144 if (m->ellipsis) { 145 have_ellipsis = m; 146 continue; 147 } 148 149 if(t->type == TChoice) 150 fprintf(codefile, "case %s:\n", m->label); 151 152 if (asprintf (&s, "%s(%s)->%s%s", 153 m->optional ? "" : "&", name, 154 t->type == TChoice ? "u." : "", m->gen_name) < 0 || 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"); 169 } 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 */ 180 } 181 break; 182 } 183 case TSetOf: 184 case TSequenceOf: { 185 char *n = NULL; 186 char *sname = NULL; 187 188 fprintf (codefile, 189 "{\n" 190 "size_t %s_oldret = %s;\n" 191 "int i;\n" 192 "%s = 0;\n", 193 tmpstr, variable, variable); 194 195 fprintf (codefile, "for(i = (%s)->len - 1; i >= 0; --i){\n", name); 196 fprintf (codefile, "size_t %s_for_oldret = %s;\n" 197 "%s = 0;\n", tmpstr, variable, variable); 198 if (asprintf (&n, "&(%s)->val[i]", name) < 0 || n == NULL) 199 errx(1, "malloc"); 200 if (asprintf (&sname, "%s_S_Of", tmpstr) < 0 || sname == NULL) 201 errx(1, "malloc"); 202 length_type(n, t->subtype, variable, sname); 203 fprintf (codefile, "%s += %s_for_oldret;\n", 204 variable, tmpstr); 205 fprintf (codefile, "}\n"); 206 207 fprintf (codefile, 208 "%s += %s_oldret;\n" 209 "}\n", variable, tmpstr); 210 free(n); 211 free(sname); 212 break; 213 } 214 case TGeneralizedTime: 215 length_primitive ("generalized_time", name, variable); 216 break; 217 case TGeneralString: 218 length_primitive ("general_string", name, variable); 219 break; 220 case TTeletexString: 221 length_primitive ("general_string", name, variable); 222 break; 223 case TUTCTime: 224 length_primitive ("utctime", name, variable); 225 break; 226 case TUTF8String: 227 length_primitive ("utf8string", name, variable); 228 break; 229 case TPrintableString: 230 length_primitive ("printable_string", name, variable); 231 break; 232 case TIA5String: 233 length_primitive ("ia5_string", name, variable); 234 break; 235 case TBMPString: 236 length_primitive ("bmp_string", name, variable); 237 break; 238 case TUniversalString: 239 length_primitive ("universal_string", name, variable); 240 break; 241 case TVisibleString: 242 length_primitive ("visible_string", name, variable); 243 break; 244 case TNull: 245 fprintf (codefile, "/* NULL */\n"); 246 break; 247 case TTag:{ 248 char *tname = NULL; 249 if (asprintf(&tname, "%s_tag", tmpstr) < 0 || tname == NULL) 250 errx(1, "malloc"); 251 length_type (name, t->subtype, variable, tname); 252 fprintf (codefile, "ret += %lu + der_length_len (ret);\n", 253 (unsigned long)length_tag(t->tag.tagvalue)); 254 free(tname); 255 break; 256 } 257 case TOID: 258 length_primitive ("oid", name, variable); 259 break; 260 default : 261 abort (); 262 } 263 return 0; 264} 265 266void 267generate_type_length (const Symbol *s) 268{ 269 fprintf (codefile, 270 "size_t ASN1CALL\n" 271 "length_%s(const %s *data)\n" 272 "{\n" 273 "size_t ret = 0;\n", 274 s->gen_name, s->gen_name); 275 276 length_type ("data", s->type, "ret", "Top"); 277 fprintf (codefile, "return ret;\n}\n\n"); 278} 279 280