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 <string.h> 68 #include <openssl/conf.h> 69 #include <openssl/conf_api.h> 70 #include "e_os.h" 71 72 static void value_free_hash_doall_arg(CONF_VALUE *a, 73 LHASH_OF(CONF_VALUE) *conf); 74 static void value_free_stack_doall(CONF_VALUE *a); 75 static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE, 76 LHASH_OF(CONF_VALUE)) 77 static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE) 78 79 /* Up until OpenSSL 0.9.5a, this was get_section */ 80 CONF_VALUE *_CONF_get_section(const CONF *conf, const char *section) 81 { 82 CONF_VALUE *v,vv; 83 84 if ((conf == NULL) || (section == NULL)) return(NULL); 85 vv.name=NULL; 86 vv.section=(char *)section; 87 v=lh_CONF_VALUE_retrieve(conf->data,&vv); 88 return(v); 89 } 90 91 /* Up until OpenSSL 0.9.5a, this was CONF_get_section */ 92 STACK_OF(CONF_VALUE) *_CONF_get_section_values(const CONF *conf, 93 const char *section) 94 { 95 CONF_VALUE *v; 96 97 v=_CONF_get_section(conf,section); 98 if (v != NULL) 99 return((STACK_OF(CONF_VALUE) *)v->value); 100 else 101 return(NULL); 102 } 103 104 int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value) 105 { 106 CONF_VALUE *v = NULL; 107 STACK_OF(CONF_VALUE) *ts; 108 109 ts = (STACK_OF(CONF_VALUE) *)section->value; 110 111 value->section=section->section; 112 if (!sk_CONF_VALUE_push(ts,value)) 113 { 114 return 0; 115 } 116 117 v = lh_CONF_VALUE_insert(conf->data, value); 118 if (v != NULL) 119 { 120 (void)sk_CONF_VALUE_delete_ptr(ts,v); 121 OPENSSL_free(v->name); 122 OPENSSL_free(v->value); 123 OPENSSL_free(v); 124 } 125 return 1; 126 } 127 128 char *_CONF_get_string(const CONF *conf, const char *section, const char *name) 129 { 130 CONF_VALUE *v,vv; 131 char *p; 132 133 if (name == NULL) return(NULL); 134 if (conf != NULL) 135 { 136 if (section != NULL) 137 { 138 vv.name=(char *)name; 139 vv.section=(char *)section; 140 v=lh_CONF_VALUE_retrieve(conf->data,&vv); 141 if (v != NULL) return(v->value); 142 if (strcmp(section,"ENV") == 0) 143 { 144 p=getenv(name); 145 if (p != NULL) return(p); 146 } 147 } 148 vv.section="default"; 149 vv.name=(char *)name; 150 v=lh_CONF_VALUE_retrieve(conf->data,&vv); 151 if (v != NULL) 152 return(v->value); 153 else 154 return(NULL); 155 } 156 else 157 return(getenv(name)); 158 } 159 160 #if 0 /* There's no way to provide error checking with this function, so 161 force implementors of the higher levels to get a string and read 162 the number themselves. */ 163 long _CONF_get_number(CONF *conf, char *section, char *name) 164 { 165 char *str; 166 long ret=0; 167 168 str=_CONF_get_string(conf,section,name); 169 if (str == NULL) return(0); 170 for (;;) 171 { 172 if (conf->meth->is_number(conf, *str)) 173 ret=ret*10+conf->meth->to_int(conf, *str); 174 else 175 return(ret); 176 str++; 177 } 178 } 179 #endif 180 181 static unsigned long conf_value_hash(const CONF_VALUE *v) 182 { 183 return (lh_strhash(v->section)<<2)^lh_strhash(v->name); 184 } 185 static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE) 186 187 static int conf_value_cmp(const CONF_VALUE *a, const CONF_VALUE *b) 188 { 189 int i; 190 191 if (a->section != b->section) 192 { 193 i=strcmp(a->section,b->section); 194 if (i) return(i); 195 } 196 197 if ((a->name != NULL) && (b->name != NULL)) 198 { 199 i=strcmp(a->name,b->name); 200 return(i); 201 } 202 else if (a->name == b->name) 203 return(0); 204 else 205 return((a->name == NULL)?-1:1); 206 } 207 static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE) 208 209 int _CONF_new_data(CONF *conf) 210 { 211 if (conf == NULL) 212 { 213 return 0; 214 } 215 if (conf->data == NULL) 216 if ((conf->data = lh_CONF_VALUE_new()) == NULL) 217 { 218 return 0; 219 } 220 return 1; 221 } 222 223 void _CONF_free_data(CONF *conf) 224 { 225 if (conf == NULL || conf->data == NULL) return; 226 227 lh_CONF_VALUE_down_load(conf->data)=0; /* evil thing to make 228 * sure the 'OPENSSL_free()' works as 229 * expected */ 230 lh_CONF_VALUE_doall_arg(conf->data, 231 LHASH_DOALL_ARG_FN(value_free_hash), 232 LHASH_OF(CONF_VALUE), conf->data); 233 234 /* We now have only 'section' entries in the hash table. 235 * Due to problems with */ 236 237 lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack)); 238 lh_CONF_VALUE_free(conf->data); 239 } 240 241 static void value_free_hash_doall_arg(CONF_VALUE *a, LHASH_OF(CONF_VALUE) *conf) 242 { 243 if (a->name != NULL) 244 (void)lh_CONF_VALUE_delete(conf,a); 245 } 246 247 static void value_free_stack_doall(CONF_VALUE *a) 248 { 249 CONF_VALUE *vv; 250 STACK_OF(CONF_VALUE) *sk; 251 int i; 252 253 if (a->name != NULL) return; 254 255 sk=(STACK_OF(CONF_VALUE) *)a->value; 256 for (i=sk_CONF_VALUE_num(sk)-1; i>=0; i--) 257 { 258 vv=sk_CONF_VALUE_value(sk,i); 259 OPENSSL_free(vv->value); 260 OPENSSL_free(vv->name); 261 OPENSSL_free(vv); 262 } 263 if (sk != NULL) sk_CONF_VALUE_free(sk); 264 OPENSSL_free(a->section); 265 OPENSSL_free(a); 266 } 267 268 /* Up until OpenSSL 0.9.5a, this was new_section */ 269 CONF_VALUE *_CONF_new_section(CONF *conf, const char *section) 270 { 271 STACK_OF(CONF_VALUE) *sk=NULL; 272 int ok=0,i; 273 CONF_VALUE *v=NULL,*vv; 274 275 if ((sk=sk_CONF_VALUE_new_null()) == NULL) 276 goto err; 277 if ((v=OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL) 278 goto err; 279 i=strlen(section)+1; 280 if ((v->section=OPENSSL_malloc(i)) == NULL) 281 goto err; 282 283 memcpy(v->section,section,i); 284 v->name=NULL; 285 v->value=(char *)sk; 286 287 vv=lh_CONF_VALUE_insert(conf->data,v); 288 assert(vv == NULL); 289 ok=1; 290 err: 291 if (!ok) 292 { 293 if (sk != NULL) sk_CONF_VALUE_free(sk); 294 if (v != NULL) OPENSSL_free(v); 295 v=NULL; 296 } 297 return(v); 298 } 299 300 IMPLEMENT_STACK_OF(CONF_VALUE) 301
