1 /* conf_api.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 73 static void value_free_hash_doall_arg(CONF_VALUE *a, 74 LHASH_OF(CONF_VALUE) *conf); 75 static void value_free_stack_doall(CONF_VALUE *a); 76 static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE, 77 LHASH_OF(CONF_VALUE)) 78 static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE) 79 80 /* Up until OpenSSL 0.9.5a, this was get_section */ 81 CONF_VALUE *_CONF_get_section(const CONF *conf, const char *section) 82 { 83 CONF_VALUE *v,vv; 84 85 if ((conf == NULL) || (section == NULL)) return(NULL); 86 vv.name=NULL; 87 vv.section=(char *)section; 88 v=lh_CONF_VALUE_retrieve(conf->data,&vv); 89 return(v); 90 } 91 92 /* Up until OpenSSL 0.9.5a, this was CONF_get_section */ 93 STACK_OF(CONF_VALUE) *_CONF_get_section_values(const CONF *conf, 94 const char *section) 95 { 96 CONF_VALUE *v; 97 98 v=_CONF_get_section(conf,section); 99 if (v != NULL) 100 return((STACK_OF(CONF_VALUE) *)v->value); 101 else 102 return(NULL); 103 } 104 105 int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value) 106 { 107 CONF_VALUE *v = NULL; 108 STACK_OF(CONF_VALUE) *ts; 109 110 ts = (STACK_OF(CONF_VALUE) *)section->value; 111 112 value->section=section->section; 113 if (!sk_CONF_VALUE_push(ts,value)) 114 { 115 return 0; 116 } 117 118 v = lh_CONF_VALUE_insert(conf->data, value); 119 if (v != NULL) 120 { 121 (void)sk_CONF_VALUE_delete_ptr(ts,v); 122 OPENSSL_free(v->name); 123 OPENSSL_free(v->value); 124 OPENSSL_free(v); 125 } 126 return 1; 127 } 128 129 char *_CONF_get_string(const CONF *conf, const char *section, const char *name) 130 { 131 CONF_VALUE *v,vv; 132 char *p; 133 134 if (name == NULL) return(NULL); 135 if (conf != NULL) 136 { 137 if (section != NULL) 138 { 139 vv.name=(char *)name; 140 vv.section=(char *)section; 141 v=lh_CONF_VALUE_retrieve(conf->data,&vv); 142 if (v != NULL) return(v->value); 143 if (strcmp(section,"ENV") == 0) 144 { 145 p=getenv(name); 146 if (p != NULL) return(p); 147 } 148 } 149 vv.section="default"; 150 vv.name=(char *)name; 151 v=lh_CONF_VALUE_retrieve(conf->data,&vv); 152 if (v != NULL) 153 return(v->value); 154 else 155 return(NULL); 156 } 157 else 158 return(getenv(name)); 159 } 160 161 #if 0 /* There's no way to provide error checking with this function, so 162 force implementors of the higher levels to get a string and read 163 the number themselves. */ 164 long _CONF_get_number(CONF *conf, char *section, char *name) 165 { 166 char *str; 167 long ret=0; 168 169 str=_CONF_get_string(conf,section,name); 170 if (str == NULL) return(0); 171 for (;;) 172 { 173 if (conf->meth->is_number(conf, *str)) 174 ret=ret*10+conf->meth->to_int(conf, *str); 175 else 176 return(ret); 177 str++; 178 } 179 } 180 #endif 181 182 static unsigned long conf_value_hash(const CONF_VALUE *v) 183 { 184 return (lh_strhash(v->section)<<2)^lh_strhash(v->name); 185 } 186 static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE) 187 188 static int conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b) 189 { 190 int i; 191 192 if (a->section != b->section) 193 { 194 i=strcmp(a->section,b->section); 195 if (i) return(i); 196 } 197 198 if ((a->name != NULL) && (b->name != NULL)) 199 { 200 i=strcmp(a->name,b->name); 201 return(i); 202 } 203 else if (a->name == b->name) 204 return(0); 205 else 206 return((a->name == NULL)?-1:1); 207 } 208 static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE) 209 210 int _CONF_new_data(CONF *conf) 211 { 212 if (conf == NULL) 213 { 214 return 0; 215 } 216 if (conf->data == NULL) 217 if ((conf->data = lh_CONF_VALUE_new()) == NULL) 218 { 219 return 0; 220 } 221 return 1; 222 } 223 224 void _CONF_free_data(CONF *conf) 225 { 226 if (conf == NULL || conf->data == NULL) return; 227 228 lh_CONF_VALUE_down_load(conf->data)=0; /* evil thing to make 229 * sure the 'OPENSSL_free()' works as 230 * expected */ 231 lh_CONF_VALUE_doall_arg(conf->data, 232 LHASH_DOALL_ARG_FN(value_free_hash), 233 LHASH_OF(CONF_VALUE), conf->data); 234 235 /* We now have only 'section' entries in the hash table. 236 * Due to problems with */ 237 238 lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack)); 239 lh_CONF_VALUE_free(conf->data); 240 } 241 242 static void value_free_hash_doall_arg(CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf) 243 { 244 if (a->name != NULL) 245 (void)lh_CONF_VALUE_delete(conf,a); 246 } 247 248 static void value_free_stack_doall(CONF_VALUE *a) 249 { 250 CONF_VALUE *vv; 251 STACK_OF(CONF_VALUE) *sk; 252 int i; 253 254 if (a->name != NULL) return; 255 256 sk=(STACK_OF(CONF_VALUE) *)a->value; 257 for (i=sk_CONF_VALUE_num(sk)-1; i>=0; i--) 258 { 259 vv=sk_CONF_VALUE_value(sk,i); 260 OPENSSL_free(vv->value); 261 OPENSSL_free(vv->name); 262 OPENSSL_free(vv); 263 } 264 if (sk != NULL) sk_CONF_VALUE_free(sk); 265 OPENSSL_free(a->section); 266 OPENSSL_free(a); 267 } 268 269 /* Up until OpenSSL 0.9.5a, this was new_section */ 270 CONF_VALUE *_CONF_new_section(CONF *conf, const char *section) 271 { 272 STACK_OF(CONF_VALUE) *sk=NULL; 273 int ok=0,i; 274 CONF_VALUE *v=NULL,*vv; 275 276 if ((sk=sk_CONF_VALUE_new_null()) == NULL) 277 goto err; 278 if ((v=OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL) 279 goto err; 280 i=strlen(section)+1; 281 if ((v->section=OPENSSL_malloc(i)) == NULL) 282 goto err; 283 284 memcpy(v->section,section,i); 285 v->name=NULL; 286 v->value=(char *)sk; 287 288 vv=lh_CONF_VALUE_insert(conf->data,v); 289 OPENSSL_assert(vv == NULL); 290 ok=1; 291 err: 292 if (!ok) 293 { 294 if (sk != NULL) sk_CONF_VALUE_free(sk); 295 if (v != NULL) OPENSSL_free(v); 296 v=NULL; 297 } 298 return(v); 299 } 300 301 IMPLEMENT_STACK_OF(CONF_VALUE) 302
