1 /* $NetBSD: gen_free.c,v 1.1.1.2 2014/04/24 12:45:28 pettai Exp $ */ 2 3 /* 4 * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include "gen_locl.h" 37 38 __RCSID("NetBSD"); 39 40 static void 41 free_primitive (const char *typename, const char *name) 42 { 43 fprintf (codefile, "der_free_%s(%s);\n", typename, name); 44 } 45 46 static void 47 free_type (const char *name, const Type *t, int preserve) 48 { 49 switch (t->type) { 50 case TType: 51 #if 0 52 free_type (name, t->symbol->type, preserve); 53 #endif 54 fprintf (codefile, "free_%s(%s);\n", t->symbol->gen_name, name); 55 break; 56 case TInteger: 57 if (t->range == NULL && t->members == NULL) { 58 free_primitive ("heim_integer", name); 59 break; 60 } 61 case TBoolean: 62 case TEnumerated : 63 case TNull: 64 case TGeneralizedTime: 65 case TUTCTime: 66 break; 67 case TBitString: 68 if (ASN1_TAILQ_EMPTY(t->members)) 69 free_primitive("bit_string", name); 70 break; 71 case TOctetString: 72 free_primitive ("octet_string", name); 73 break; 74 case TChoice: 75 case TSet: 76 case TSequence: { 77 Member *m, *have_ellipsis = NULL; 78 79 if (t->members == NULL) 80 break; 81 82 if ((t->type == TSequence || t->type == TChoice) && preserve) 83 fprintf(codefile, "der_free_octet_string(&data->_save);\n"); 84 85 if(t->type == TChoice) 86 fprintf(codefile, "switch((%s)->element) {\n", name); 87 88 ASN1_TAILQ_FOREACH(m, t->members, members) { 89 char *s; 90 91 if (m->ellipsis){ 92 have_ellipsis = m; 93 continue; 94 } 95 96 if(t->type == TChoice) 97 fprintf(codefile, "case %s:\n", m->label); 98 if (asprintf (&s, "%s(%s)->%s%s", 99 m->optional ? "" : "&", name, 100 t->type == TChoice ? "u." : "", m->gen_name) < 0 || s == NULL) 101 errx(1, "malloc"); 102 if(m->optional) 103 fprintf(codefile, "if(%s) {\n", s); 104 free_type (s, m->type, FALSE); 105 if(m->optional) 106 fprintf(codefile, 107 "free(%s);\n" 108 "%s = NULL;\n" 109 "}\n",s, s); 110 free (s); 111 if(t->type == TChoice) 112 fprintf(codefile, "break;\n"); 113 } 114 115 if(t->type == TChoice) { 116 if (have_ellipsis) 117 fprintf(codefile, 118 "case %s:\n" 119 "der_free_octet_string(&(%s)->u.%s);\n" 120 "break;", 121 have_ellipsis->label, 122 name, have_ellipsis->gen_name); 123 fprintf(codefile, "}\n"); 124 } 125 break; 126 } 127 case TSetOf: 128 case TSequenceOf: { 129 char *n; 130 131 fprintf (codefile, "while((%s)->len){\n", name); 132 if (asprintf (&n, "&(%s)->val[(%s)->len-1]", name, name) < 0 || n == NULL) 133 errx(1, "malloc"); 134 free_type(n, t->subtype, FALSE); 135 fprintf(codefile, 136 "(%s)->len--;\n" 137 "}\n", 138 name); 139 fprintf(codefile, 140 "free((%s)->val);\n" 141 "(%s)->val = NULL;\n", name, name); 142 free(n); 143 break; 144 } 145 case TGeneralString: 146 free_primitive ("general_string", name); 147 break; 148 case TTeletexString: 149 free_primitive ("general_string", name); 150 break; 151 case TUTF8String: 152 free_primitive ("utf8string", name); 153 break; 154 case TPrintableString: 155 free_primitive ("printable_string", name); 156 break; 157 case TIA5String: 158 free_primitive ("ia5_string", name); 159 break; 160 case TBMPString: 161 free_primitive ("bmp_string", name); 162 break; 163 case TUniversalString: 164 free_primitive ("universal_string", name); 165 break; 166 case TVisibleString: 167 free_primitive ("visible_string", name); 168 break; 169 case TTag: 170 free_type (name, t->subtype, preserve); 171 break; 172 case TOID : 173 free_primitive ("oid", name); 174 break; 175 default : 176 abort (); 177 } 178 } 179 180 void 181 generate_type_free (const Symbol *s) 182 { 183 int preserve = preserve_type(s->name) ? TRUE : FALSE; 184 185 fprintf (codefile, "void ASN1CALL\n" 186 "free_%s(%s *data)\n" 187 "{\n", 188 s->gen_name, s->gen_name); 189 190 free_type ("data", s->type, preserve); 191 fprintf (codefile, "}\n\n"); 192 } 193 194