conf_api.c revision 279265
1/* conf_api.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59/* Part of the code in here was originally in conf.c, which is now removed */ 60 61#ifndef CONF_DEBUG 62# undef NDEBUG /* avoid conflicting definitions */ 63# define NDEBUG 64#endif 65 66#include <assert.h> 67#include <stdlib.h> 68#include <string.h> 69#include <openssl/conf.h> 70#include <openssl/conf_api.h> 71#include "e_os.h" 72 73static void value_free_hash(CONF_VALUE *a, LHASH *conf); 74static void value_free_stack(CONF_VALUE *a,LHASH *conf); 75static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE *, LHASH *) 76static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_stack, CONF_VALUE *, LHASH *) 77/* We don't use function pointer casting or wrapper functions - but cast each 78 * callback parameter inside the callback functions. */ 79/* static unsigned long hash(CONF_VALUE *v); */ 80static unsigned long hash(const void *v_void); 81/* static int cmp_conf(CONF_VALUE *a,CONF_VALUE *b); */ 82static int cmp_conf(const void *a_void,const void *b_void); 83 84/* Up until OpenSSL 0.9.5a, this was get_section */ 85CONF_VALUE *_CONF_get_section(const CONF *conf, const char *section) 86 { 87 CONF_VALUE *v,vv; 88 89 if ((conf == NULL) || (section == NULL)) return(NULL); 90 vv.name=NULL; 91 vv.section=(char *)section; 92 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv); 93 return(v); 94 } 95 96/* Up until OpenSSL 0.9.5a, this was CONF_get_section */ 97STACK_OF(CONF_VALUE) *_CONF_get_section_values(const CONF *conf, 98 const char *section) 99 { 100 CONF_VALUE *v; 101 102 v=_CONF_get_section(conf,section); 103 if (v != NULL) 104 return((STACK_OF(CONF_VALUE) *)v->value); 105 else 106 return(NULL); 107 } 108 109int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value) 110 { 111 CONF_VALUE *v = NULL; 112 STACK_OF(CONF_VALUE) *ts; 113 114 ts = (STACK_OF(CONF_VALUE) *)section->value; 115 116 value->section=section->section; 117 if (!sk_CONF_VALUE_push(ts,value)) 118 { 119 return 0; 120 } 121 122 v = (CONF_VALUE *)lh_insert(conf->data, value); 123 if (v != NULL) 124 { 125 (void)sk_CONF_VALUE_delete_ptr(ts,v); 126 OPENSSL_free(v->name); 127 OPENSSL_free(v->value); 128 OPENSSL_free(v); 129 } 130 return 1; 131 } 132 133char *_CONF_get_string(const CONF *conf, const char *section, const char *name) 134 { 135 CONF_VALUE *v,vv; 136 char *p; 137 138 if (name == NULL) return(NULL); 139 if (conf != NULL) 140 { 141 if (section != NULL) 142 { 143 vv.name=(char *)name; 144 vv.section=(char *)section; 145 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv); 146 if (v != NULL) return(v->value); 147 if (strcmp(section,"ENV") == 0) 148 { 149 p=Getenv(name); 150 if (p != NULL) return(p); 151 } 152 } 153 vv.section="default"; 154 vv.name=(char *)name; 155 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv); 156 if (v != NULL) 157 return(v->value); 158 else 159 return(NULL); 160 } 161 else 162 return(Getenv(name)); 163 } 164 165#if 0 /* There's no way to provide error checking with this function, so 166 force implementors of the higher levels to get a string and read 167 the number themselves. */ 168long _CONF_get_number(CONF *conf, char *section, char *name) 169 { 170 char *str; 171 long ret=0; 172 173 str=_CONF_get_string(conf,section,name); 174 if (str == NULL) return(0); 175 for (;;) 176 { 177 if (conf->meth->is_number(conf, *str)) 178 ret=ret*10+conf->meth->to_int(conf, *str); 179 else 180 return(ret); 181 str++; 182 } 183 } 184#endif 185 186int _CONF_new_data(CONF *conf) 187 { 188 if (conf == NULL) 189 { 190 return 0; 191 } 192 if (conf->data == NULL) 193 if ((conf->data = lh_new(hash, cmp_conf)) == NULL) 194 { 195 return 0; 196 } 197 return 1; 198 } 199 200void _CONF_free_data(CONF *conf) 201 { 202 if (conf == NULL || conf->data == NULL) return; 203 204 conf->data->down_load=0; /* evil thing to make sure the 'OPENSSL_free()' 205 * works as expected */ 206 lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_hash), 207 conf->data); 208 209 /* We now have only 'section' entries in the hash table. 210 * Due to problems with */ 211 212 lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_stack), 213 conf->data); 214 lh_free(conf->data); 215 } 216 217static void value_free_hash(CONF_VALUE *a, LHASH *conf) 218 { 219 if (a->name != NULL) 220 { 221 a=(CONF_VALUE *)lh_delete(conf,a); 222 } 223 } 224 225static void value_free_stack(CONF_VALUE *a, LHASH *conf) 226 { 227 CONF_VALUE *vv; 228 STACK *sk; 229 int i; 230 231 if (a->name != NULL) return; 232 233 sk=(STACK *)a->value; 234 for (i=sk_num(sk)-1; i>=0; i--) 235 { 236 vv=(CONF_VALUE *)sk_value(sk,i); 237 OPENSSL_free(vv->value); 238 OPENSSL_free(vv->name); 239 OPENSSL_free(vv); 240 } 241 if (sk != NULL) sk_free(sk); 242 OPENSSL_free(a->section); 243 OPENSSL_free(a); 244 } 245 246/* static unsigned long hash(CONF_VALUE *v) */ 247static unsigned long hash(const void *v_void) 248 { 249 CONF_VALUE *v = (CONF_VALUE *)v_void; 250 return((lh_strhash(v->section)<<2)^lh_strhash(v->name)); 251 } 252 253/* static int cmp_conf(CONF_VALUE *a, CONF_VALUE *b) */ 254static int cmp_conf(const void *a_void,const void *b_void) 255 { 256 int i; 257 CONF_VALUE *a = (CONF_VALUE *)a_void; 258 CONF_VALUE *b = (CONF_VALUE *)b_void; 259 260 if (a->section != b->section) 261 { 262 i=strcmp(a->section,b->section); 263 if (i) return(i); 264 } 265 266 if ((a->name != NULL) && (b->name != NULL)) 267 { 268 i=strcmp(a->name,b->name); 269 return(i); 270 } 271 else if (a->name == b->name) 272 return(0); 273 else 274 return((a->name == NULL)?-1:1); 275 } 276 277/* Up until OpenSSL 0.9.5a, this was new_section */ 278CONF_VALUE *_CONF_new_section(CONF *conf, const char *section) 279 { 280 STACK *sk=NULL; 281 int ok=0,i; 282 CONF_VALUE *v=NULL,*vv; 283 284 if ((sk=sk_new_null()) == NULL) 285 goto err; 286 if ((v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL) 287 goto err; 288 i=strlen(section)+1; 289 if ((v->section=(char *)OPENSSL_malloc(i)) == NULL) 290 goto err; 291 292 memcpy(v->section,section,i); 293 v->name=NULL; 294 v->value=(char *)sk; 295 296 vv=(CONF_VALUE *)lh_insert(conf->data,v); 297 OPENSSL_assert(vv == NULL); 298 ok=1; 299err: 300 if (!ok) 301 { 302 if (sk != NULL) sk_free(sk); 303 if (v != NULL) OPENSSL_free(v); 304 v=NULL; 305 } 306 return(v); 307 } 308 309IMPLEMENT_STACK_OF(CONF_VALUE) 310