conf_api.c 7.9 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
/* conf_api.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

/* Part of the code in here was originally in conf.c, which is now removed */

61 62 63 64 65 66
#ifndef CONF_DEBUG
# undef NDEBUG /* avoid conflicting definitions */
# define NDEBUG
#endif

#include <assert.h>
R
Richard Levitte 已提交
67
#include <string.h>
68 69 70 71 72 73 74 75
#include <openssl/conf.h>
#include <openssl/conf_api.h>

static void value_free_hash(CONF_VALUE *a, LHASH *conf);
static void value_free_stack(CONF_VALUE *a,LHASH *conf);
static unsigned long hash(CONF_VALUE *v);
static int cmp_conf(CONF_VALUE *a,CONF_VALUE *b);

76
/* Up until OpenSSL 0.9.5a, this was get_section */
77 78 79 80 81 82 83 84 85 86 87
CONF_VALUE *_CONF_get_section(CONF *conf, char *section)
	{
	CONF_VALUE *v,vv;

	if ((conf == NULL) || (section == NULL)) return(NULL);
	vv.name=NULL;
	vv.section=section;
	v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
	return(v);
	}

88
/* Up until OpenSSL 0.9.5a, this was CONF_get_section */
89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116
STACK_OF(CONF_VALUE) *_CONF_get_section_values(CONF *conf, char *section)
	{
	CONF_VALUE *v;

	v=_CONF_get_section(conf,section);
	if (v != NULL)
		return((STACK_OF(CONF_VALUE) *)v->value);
	else
		return(NULL);
	}

int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value)
	{
	CONF_VALUE *v = NULL;
	STACK_OF(CONF_VALUE) *ts;

	ts = (STACK_OF(CONF_VALUE) *)section->value;

	value->section=section->section;	
	if (!sk_CONF_VALUE_push(ts,value))
		{
		return 0;
		}

	v = (CONF_VALUE *)lh_insert(conf->data, value);
	if (v != NULL)
		{
		sk_CONF_VALUE_delete_ptr(ts,v);
117 118 119
		OPENSSL_free(v->name);
		OPENSSL_free(v->value);
		OPENSSL_free(v);
120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155
		}
	return 1;
	}

char *_CONF_get_string(CONF *conf, char *section, char *name)
	{
	CONF_VALUE *v,vv;
	char *p;

	if (name == NULL) return(NULL);
	if (conf != NULL)
		{
		if (section != NULL)
			{
			vv.name=name;
			vv.section=section;
			v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
			if (v != NULL) return(v->value);
			if (strcmp(section,"ENV") == 0)
				{
				p=Getenv(name);
				if (p != NULL) return(p);
				}
			}
		vv.section="default";
		vv.name=name;
		v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
		if (v != NULL)
			return(v->value);
		else
			return(NULL);
		}
	else
		return(Getenv(name));
	}

156 157 158
#if 0 /* There's no way to provide error checking with this function, so
	 force implementors of the higher levels to get a string and read
	 the number themselves. */
159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174
long _CONF_get_number(CONF *conf, char *section, char *name)
	{
	char *str;
	long ret=0;

	str=_CONF_get_string(conf,section,name);
	if (str == NULL) return(0);
	for (;;)
		{
		if (conf->meth->is_number(conf, *str))
			ret=ret*10+conf->meth->to_int(conf, *str);
		else
			return(ret);
		str++;
		}
	}
175
#endif
176 177 178 179 180 181 182 183

int _CONF_new_data(CONF *conf)
	{
	if (conf == NULL)
		{
		return 0;
		}
	if (conf->data == NULL)
184 185
		if ((conf->data = lh_new((LHASH_HASH_FN_TYPE)hash,
					(LHASH_COMP_FN_TYPE)cmp_conf)) == NULL)
186 187 188 189 190 191 192 193 194 195
			{
			return 0;
			}
	return 1;
	}

void _CONF_free_data(CONF *conf)
	{
	if (conf == NULL || conf->data == NULL) return;

196
	conf->data->down_load=0; /* evil thing to make sure the 'OPENSSL_free()'
197
				  * works as expected */
198 199
	lh_doall_arg(conf->data, (LHASH_DOALL_ARG_FN_TYPE)value_free_hash,
			conf->data);
200 201 202 203

	/* We now have only 'section' entries in the hash table.
	 * Due to problems with */

204 205
	lh_doall_arg(conf->data, (LHASH_DOALL_ARG_FN_TYPE)value_free_stack,
			conf->data);
206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228
	lh_free(conf->data);
	}

static void value_free_hash(CONF_VALUE *a, LHASH *conf)
	{
	if (a->name != NULL)
		{
		a=(CONF_VALUE *)lh_delete(conf,a);
		}
	}

static void value_free_stack(CONF_VALUE *a, LHASH *conf)
	{
	CONF_VALUE *vv;
	STACK *sk;
	int i;

	if (a->name != NULL) return;

	sk=(STACK *)a->value;
	for (i=sk_num(sk)-1; i>=0; i--)
		{
		vv=(CONF_VALUE *)sk_value(sk,i);
229 230 231
		OPENSSL_free(vv->value);
		OPENSSL_free(vv->name);
		OPENSSL_free(vv);
232 233
		}
	if (sk != NULL) sk_free(sk);
234 235
	OPENSSL_free(a->section);
	OPENSSL_free(a);
236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263
	}

static unsigned long hash(CONF_VALUE *v)
	{
	return((lh_strhash(v->section)<<2)^lh_strhash(v->name));
	}

static int cmp_conf(CONF_VALUE *a, CONF_VALUE *b)
	{
	int i;

	if (a->section != b->section)
		{
		i=strcmp(a->section,b->section);
		if (i) return(i);
		}

	if ((a->name != NULL) && (b->name != NULL))
		{
		i=strcmp(a->name,b->name);
		return(i);
		}
	else if (a->name == b->name)
		return(0);
	else
		return((a->name == NULL)?-1:1);
	}

264
/* Up until OpenSSL 0.9.5a, this was new_section */
265 266 267 268 269 270 271 272
CONF_VALUE *_CONF_new_section(CONF *conf, char *section)
	{
	STACK *sk=NULL;
	int ok=0,i;
	CONF_VALUE *v=NULL,*vv;

	if ((sk=sk_new_null()) == NULL)
		goto err;
273
	if ((v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL)
274 275
		goto err;
	i=strlen(section)+1;
276
	if ((v->section=(char *)OPENSSL_malloc(i)) == NULL)
277 278 279 280 281 282 283
		goto err;

	memcpy(v->section,section,i);
	v->name=NULL;
	v->value=(char *)sk;
	
	vv=(CONF_VALUE *)lh_insert(conf->data,v);
284
	assert(vv == NULL);
285 286 287 288 289
	ok=1;
err:
	if (!ok)
		{
		if (sk != NULL) sk_free(sk);
290
		if (v != NULL) OPENSSL_free(v);
291 292 293 294 295 296
		v=NULL;
		}
	return(v);
	}

IMPLEMENT_STACK_OF(CONF_VALUE)