Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 | |
| 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) |