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 free_primitive (const char *typename, const char *name) 40 { 41 fprintf (codefile, "der_free_%s(%s);\n", typename, name); 42 } 43 44 static void 45 free_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 86 ASN1_TAILQ_FOREACH(m, t->members, members) { 87 char *s; 88 89 if (m->ellipsis){ 90 have_ellipsis = m; 91 continue; 92 } 93 94 if(t->type == TChoice) 95 fprintf(codefile, "case %s:\n", m->label); 96 if (asprintf (&s, "%s(%s)->%s%s", 97 m->optional ? "" : "&", name, 98 t->type == TChoice ? "u." : "", m->gen_name) < 0 || s == NULL) 99 errx(1, "malloc"); 100 if(m->optional) 101 fprintf(codefile, "if(%s) {\n", s); 102 free_type (s, m->type, FALSE); 103 if(m->optional) 104 fprintf(codefile, 105 "free(%s);\n" 106 "%s = NULL;\n" 107 "}\n",s, s); 108 free (s); 109 if(t->type == TChoice) 110 fprintf(codefile, "break;\n"); 111 } 112 113 if(t->type == TChoice) { 114 if (have_ellipsis) 115 fprintf(codefile, 116 "case %s:\n" 117 "der_free_octet_string(&(%s)->u.%s);\n" 118 "break;", 119 have_ellipsis->label, 120 name, have_ellipsis->gen_name); 121 fprintf(codefile, "}\n"); 122 } 123 break; 124 } 125 case TSetOf: 126 case TSequenceOf: { 127 char *n; 128 129 fprintf (codefile, "while((%s)->len){\n", name); 130 if (asprintf (&n, "&(%s)->val[(%s)->len-1]", name, name) < 0 || n == NULL) 131 errx(1, "malloc"); 132 free_type(n, t->subtype, FALSE); 133 fprintf(codefile, 134 "(%s)->len--;\n" 135 "}\n", 136 name); 137 fprintf(codefile, 138 "free((%s)->val);\n" 139 "(%s)->val = NULL;\n", name, name); 140 free(n); 141 break; 142 } 143 case TGeneralString: 144 free_primitive ("general_string", name); 145 break; 146 case TTeletexString: 147 free_primitive ("general_string", name); 148 break; 149 case TUTF8String: 150 free_primitive ("utf8string", name); 151 break; 152 case TPrintableString: 153 free_primitive ("printable_string", name); 154 break; 155 case TIA5String: 156 free_primitive ("ia5_string", name); 157 break; 158 case TBMPString: 159 free_primitive ("bmp_string", name); 160 break; 161 case TUniversalString: 162 free_primitive ("universal_string", name); 163 break; 164 case TVisibleString: 165 free_primitive ("visible_string", name); 166 break; 167 case TTag: 168 free_type (name, t->subtype, preserve); 169 break; 170 case TOID : 171 free_primitive ("oid", name); 172 break; 173 default : 174 abort (); 175 } 176 } 177 178 void 179 generate_type_free (const Symbol *s) 180 { 181 int preserve = preserve_type(s->name) ? TRUE : FALSE; 182 183 fprintf (codefile, "void ASN1CALL\n" 184 "free_%s(%s *data)\n" 185 "{\n", 186 s->gen_name, s->gen_name); 187 188 free_type ("data", s->type, preserve); 189 fprintf (codefile, "}\n\n"); 190 } 191 192