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 <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(CONF_VALUE *a, LHASH *conf); 73 static void value_free_stack(CONF_VALUE *a,LHASH *conf); 74 static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE *, LHASH *) 75 static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_stack, CONF_VALUE *, LHASH *) 76 /* We don't use function pointer casting or wrapper functions - but cast each 77 * callback parameter inside the callback functions. */ 78 /* static unsigned long hash(CONF_VALUE *v); */ 79 static unsigned long hash(const void *v_void); 80 /* static int cmp_conf(CONF_VALUE *a,CONF_VALUE *b); */ 81 static int cmp_conf(const void *a_void,const void *b_void); 82 83 /* Up until OpenSSL 0.9.5a, this was get_section */ 84 CONF_VALUE *_CONF_get_section(const CONF *conf, const char *section) 85 { 86 CONF_VALUE *v,vv; 87 88 if ((conf == NULL) || (section == NULL)) return(NULL); 89 vv.name=NULL; 90 vv.section=(char *)section; 91 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv); 92 return(v); 93 } 94 95 /* Up until OpenSSL 0.9.5a, this was CONF_get_section */ 96 STACK_OF(CONF_VALUE) *_CONF_get_section_values(const CONF *conf, 97 const char *section) 98 { 99 CONF_VALUE *v; 100 101 v=_CONF_get_section(conf,section); 102 if (v != NULL) 103 return((STACK_OF(CONF_VALUE) *)v->value); 104 else 105 return(NULL); 106 } 107 108 int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value) 109 { 110 CONF_VALUE *v = NULL; 111 STACK_OF(CONF_VALUE) *ts; 112 113 ts = (STACK_OF(CONF_VALUE) *)section->value; 114 115 value->section=section->section; 116 if (!sk_CONF_VALUE_push(ts,value)) 117 { 118 return 0; 119 } 120 121 v = (CONF_VALUE *)lh_insert(conf->data, value); 122 if (v != NULL) 123 { 124 (void)sk_CONF_VALUE_delete_ptr(ts,v); 125 OPENSSL_free(v->name); 126 OPENSSL_free(v->value); 127 OPENSSL_free(v); 128 } 129 return 1; 130 } 131 132 char *_CONF_get_string(const CONF *conf, const char *section, const char *name) 133 { 134 CONF_VALUE *v,vv; 135 char *p; 136 137 if (name == NULL) return(NULL); 138 if (conf != NULL) 139 { 140 if (section != NULL) 141 { 142 vv.name=(char *)name; 143 vv.section=(char *)section; 144 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv); 145 if (v != NULL) return(v->value); 146 if (strcmp(section,"ENV") == 0) 147 { 148 p=Getenv(name); 149 if (p != NULL) return(p); 150 } 151 } 152 vv.section="default"; 153 vv.name=(char *)name; 154 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv); 155 if (v != NULL) 156 return(v->value); 157 else 158 return(NULL); 159 } 160 else 161 return(Getenv(name)); 162 } 163 164 #if 0 /* There's no way to provide error checking with this function, so 165 force implementors of the higher levels to get a string and read 166 the number themselves. */ 167 long _CONF_get_number(CONF *conf, char *section, char *name) 168 { 169 char *str; 170 long ret=0; 171 172 str=_CONF_get_string(conf,section,name); 173 if (str == NULL) return(0); 174 for (;;) 175 { 176 if (conf->meth->is_number(conf, *str)) 177 ret=ret*10+conf->meth->to_int(conf, *str); 178 else 179 return(ret); 180 str++; 181 } 182 } 183 #endif 184 185 int _CONF_new_data(CONF *conf) 186 { 187 if (conf == NULL) 188 { 189 return 0; 190 } 191 if (conf->data == NULL) 192 if ((conf->data = lh_new(hash, cmp_conf)) == NULL) 193 { 194 return 0; 195 } 196 return 1; 197 } 198 199 void _CONF_free_data(CONF *conf) 200 { 201 if (conf == NULL || conf->data == NULL) return; 202 203 conf->data->down_load=0; /* evil thing to make sure the 'OPENSSL_free()' 204 * works as expected */ 205 lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_hash), 206 conf->data); 207 208 /* We now have only 'section' entries in the hash table. 209 * Due to problems with */ 210 211 lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_stack), 212 conf->data); 213 lh_free(conf->data); 214 } 215 216 static void value_free_hash(CONF_VALUE *a, LHASH *conf) 217 { 218 if (a->name != NULL) 219 { 220 a=(CONF_VALUE *)lh_delete(conf,a); 221 } 222 } 223 224 static void value_free_stack(CONF_VALUE *a, LHASH *conf) 225 { 226 CONF_VALUE *vv; 227 STACK *sk; 228 int i; 229 230 if (a->name != NULL) return; 231 232 sk=(STACK *)a->value; 233 for (i=sk_num(sk)-1; i>=0; i--) 234 { 235 vv=(CONF_VALUE *)sk_value(sk,i); 236 OPENSSL_free(vv->value); 237 OPENSSL_free(vv->name); 238 OPENSSL_free(vv); 239 } 240 if (sk != NULL) sk_free(sk); 241 OPENSSL_free(a->section); 242 OPENSSL_free(a); 243 } 244 245 /* static unsigned long hash(CONF_VALUE *v) */ 246 static unsigned long hash(const void *v_void) 247 { 248 CONF_VALUE *v = (CONF_VALUE *)v_void; 249 return((lh_strhash(v->section)<<2)^lh_strhash(v->name)); 250 } 251 252 /* static int cmp_conf(CONF_VALUE *a, CONF_VALUE *b) */ 253 static int cmp_conf(const void *a_void,const void *b_void) 254 { 255 int i; 256 CONF_VALUE *a = (CONF_VALUE *)a_void; 257 CONF_VALUE *b = (CONF_VALUE *)b_void; 258 259 if (a->section != b->section) 260 { 261 i=strcmp(a->section,b->section); 262 if (i) return(i); 263 } 264 265 if ((a->name != NULL) && (b->name != NULL)) 266 { 267 i=strcmp(a->name,b->name); 268 return(i); 269 } 270 else if (a->name == b->name) 271 return(0); 272 else 273 return((a->name == NULL)?-1:1); 274 } 275 276 /* Up until OpenSSL 0.9.5a, this was new_section */ 277 CONF_VALUE *_CONF_new_section(CONF *conf, const char *section) 278 { 279 STACK *sk=NULL; 280 int ok=0,i; 281 CONF_VALUE *v=NULL,*vv; 282 283 if ((sk=sk_new_null()) == NULL) 284 goto err; 285 if ((v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL) 286 goto err; 287 i=strlen(section)+1; 288 if ((v->section=(char *)OPENSSL_malloc(i)) == NULL) 289 goto err; 290 291 memcpy(v->section,section,i); 292 v->name=NULL; 293 v->value=(char *)sk; 294 295 vv=(CONF_VALUE *)lh_insert(conf->data,v); 296 assert(vv == NULL); 297 ok=1; 298 err: 299 if (!ok) 300 { 301 if (sk != NULL) sk_free(sk); 302 if (v != NULL) OPENSSL_free(v); 303 v=NULL; 304 } 305 return(v); 306 } 307 308 IMPLEMENT_STACK_OF(CONF_VALUE) 309