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 void 39free_primitive (const char *typename, const char *name) 40{ 41 fprintf (codefile, "der_free_%s(%s);\n", typename, name); 42} 43 44static void 45free_type (const char *name, const Type *t, int preserve) 46{ 47 switch (t->type) { 48 case TType: 49#if 0 50 free_type (name, t->symbol->type, preserve); 51#endif 52 fprintf (codefile, "free_%s(%s);\n", t->symbol->gen_name, name); 53 break; 54 case TInteger: 55 if (t->range == NULL && t->members == NULL) { 56 free_primitive ("heim_integer", name); 57 break; 58 } 59 case TBoolean: 60 case TEnumerated : 61 case TNull: 62 case TGeneralizedTime: 63 case TUTCTime: 64 break; 65 case TBitString: 66 if (ASN1_TAILQ_EMPTY(t->members)) 67 free_primitive("bit_string", name); 68 break; 69 case TOctetString: 70 free_primitive ("octet_string", name); 71 break; 72 case TChoice: 73 case TSet: 74 case TSequence: { 75 Member *m, *have_ellipsis = NULL; 76 77 if (t->members == NULL) 78 break; 79 80 if ((t->type == TSequence || t->type == TChoice) && preserve) 81 fprintf(codefile, "der_free_octet_string(&data->_save);\n"); 82 83 if(t->type == TChoice) { 84 fprintf(codefile, "switch((%s)->element) {\n", name); 85 fprintf(codefile, 86 "case ASN1_CHOICE_INVALID: break;\n"); 87 } 88 89 ASN1_TAILQ_FOREACH(m, t->members, members) { 90 char *s; 91 92 if (m->ellipsis){ 93 have_ellipsis = m; 94 continue; 95 } 96 97 if(t->type == TChoice) 98 fprintf(codefile, "case %s:\n", m->label); 99 if (asprintf (&s, "%s(%s)->%s%s", 100 m->optional ? "" : "&", name, 101 t->type == TChoice ? "u." : "", m->gen_name) < 0 || s == NULL) 102 errx(1, "malloc"); 103 if(m->optional) 104 fprintf(codefile, "if(%s) {\n", s); 105 free_type (s, m->type, FALSE); 106 if(m->optional) 107 fprintf(codefile, 108 "free(%s);\n" 109 "%s = NULL;\n" 110 "}\n",s, s); 111 free (s); 112 if(t->type == TChoice) 113 fprintf(codefile, "break;\n"); 114 } 115 116 if(t->type == TChoice) { 117 if (have_ellipsis) 118 fprintf(codefile, 119 "case %s:\n" 120 "der_free_octet_string(&(%s)->u.%s);\n" 121 "break;", 122 have_ellipsis->label, 123 name, have_ellipsis->gen_name); 124 fprintf(codefile, "}\n"); 125 } 126 break; 127 } 128 case TSetOf: 129 case TSequenceOf: { 130 char *n; 131 132 fprintf (codefile, "while((%s)->len){\n", name); 133 if (asprintf (&n, "&(%s)->val[(%s)->len-1]", name, name) < 0 || n == NULL) 134 errx(1, "malloc"); 135 free_type(n, t->subtype, FALSE); 136 fprintf(codefile, 137 "(%s)->len--;\n" 138 "}\n", 139 name); 140 fprintf(codefile, 141 "free((%s)->val);\n" 142 "(%s)->val = NULL;\n", name, name); 143 free(n); 144 break; 145 } 146 case TGeneralString: 147 free_primitive ("general_string", name); 148 break; 149 case TTeletexString: 150 free_primitive ("general_string", name); 151 break; 152 case TUTF8String: 153 free_primitive ("utf8string", name); 154 break; 155 case TPrintableString: 156 free_primitive ("printable_string", name); 157 break; 158 case TIA5String: 159 free_primitive ("ia5_string", name); 160 break; 161 case TBMPString: 162 free_primitive ("bmp_string", name); 163 break; 164 case TUniversalString: 165 free_primitive ("universal_string", name); 166 break; 167 case TVisibleString: 168 free_primitive ("visible_string", name); 169 break; 170 case TTag: 171 free_type (name, t->subtype, preserve); 172 break; 173 case TOID : 174 free_primitive ("oid", name); 175 break; 176 default : 177 abort (); 178 } 179} 180 181void 182generate_type_free (const Symbol *s) 183{ 184 int preserve = preserve_type(s->name) ? TRUE : FALSE; 185 186 fprintf (codefile, "void ASN1CALL\n" 187 "free_%s(%s *data)\n" 188 "{\n", 189 s->gen_name, s->gen_name); 190 191 free_type ("data", s->type, preserve); 192 fprintf (codefile, "}\n\n"); 193} 194 195