openssl1.0/crypto/conf/conf_api.c

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/* 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 */
#ifndef CONF_DEBUG
# undef NDEBUG /* avoid conflicting definitions */
# define NDEBUG
#endif
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "cryptlib.h"
#include <openssl/conf.h>
#include <openssl/conf_api.h>
#include "e_os.h"
static void value_free_hash_doall_arg(CONF_VALUE *a,
LHASH_OF(CONF_VALUE) *conf);
static void value_free_stack_doall(CONF_VALUE *a);
static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE,
LHASH_OF(CONF_VALUE))
static IMPLEMENT_LHASH_DOALL_FN(value_free_stack, CONF_VALUE)
/* Up until OpenSSL 0.9.5a, this was get_section */
CONF_VALUE *_CONF_get_section(const CONF *conf, const char *section)
{
CONF_VALUE *v, vv;
if ((conf == NULL) || (section == NULL))
return (NULL);
vv.name = NULL;
vv.section = (char *)section;
v = lh_CONF_VALUE_retrieve(conf->data, &vv);
return (v);
}
/* Up until OpenSSL 0.9.5a, this was CONF_get_section */
STACK_OF(CONF_VALUE) *_CONF_get_section_values(const CONF *conf,
const 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 = lh_CONF_VALUE_insert(conf->data, value);
if (v != NULL) {
(void)sk_CONF_VALUE_delete_ptr(ts, v);
OPENSSL_free(v->name);
OPENSSL_free(v->value);
OPENSSL_free(v);
}
return 1;
}
char *_CONF_get_string(const CONF *conf, const char *section,
const char *name)
{
CONF_VALUE *v, vv;
char *p;
if (name == NULL)
return (NULL);
if (conf != NULL) {
if (section != NULL) {
vv.name = (char *)name;
vv.section = (char *)section;
v = lh_CONF_VALUE_retrieve(conf->data, &vv);
if (v != NULL)
return (v->value);
if (strcmp(section, "ENV") == 0) {
p = ossl_safe_getenv(name);
if (p != NULL)
return (p);
}
}
vv.section = "default";
vv.name = (char *)name;
v = lh_CONF_VALUE_retrieve(conf->data, &vv);
if (v != NULL)
return (v->value);
else
return (NULL);
} else
return (ossl_safe_getenv(name));
}
#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. */
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++;
}
}
#endif
static unsigned long conf_value_hash(const CONF_VALUE *v)
{
return (lh_strhash(v->section) << 2) ^ lh_strhash(v->name);
}
static IMPLEMENT_LHASH_HASH_FN(conf_value, CONF_VALUE)
static int conf_value_cmp(const CONF_VALUE *a, const 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);
}
static IMPLEMENT_LHASH_COMP_FN(conf_value, CONF_VALUE)
int _CONF_new_data(CONF *conf)
{
if (conf == NULL) {
return 0;
}
if (conf->data == NULL)
if ((conf->data = lh_CONF_VALUE_new()) == NULL) {
return 0;
}
return 1;
}
void _CONF_free_data(CONF *conf)
{
if (conf == NULL || conf->data == NULL)
return;
lh_CONF_VALUE_down_load(conf->data) = 0; /* evil thing to make * sure the
* 'OPENSSL_free()' works as *
* expected */
lh_CONF_VALUE_doall_arg(conf->data,
LHASH_DOALL_ARG_FN(value_free_hash),
LHASH_OF(CONF_VALUE), conf->data);
/*
* We now have only 'section' entries in the hash table. Due to problems
* with
*/
lh_CONF_VALUE_doall(conf->data, LHASH_DOALL_FN(value_free_stack));
lh_CONF_VALUE_free(conf->data);
}
static void value_free_hash_doall_arg(CONF_VALUE *a,
LHASH_OF(CONF_VALUE) *conf)
{
if (a->name != NULL)
(void)lh_CONF_VALUE_delete(conf, a);
}
static void value_free_stack_doall(CONF_VALUE *a)
{
CONF_VALUE *vv;
STACK_OF(CONF_VALUE) *sk;
int i;
if (a->name != NULL)
return;
sk = (STACK_OF(CONF_VALUE) *)a->value;
for (i = sk_CONF_VALUE_num(sk) - 1; i >= 0; i--) {
vv = sk_CONF_VALUE_value(sk, i);
OPENSSL_free(vv->value);
OPENSSL_free(vv->name);
OPENSSL_free(vv);
}
if (sk != NULL)
sk_CONF_VALUE_free(sk);
OPENSSL_free(a->section);
OPENSSL_free(a);
}
/* Up until OpenSSL 0.9.5a, this was new_section */
CONF_VALUE *_CONF_new_section(CONF *conf, const char *section)
{
STACK_OF(CONF_VALUE) *sk = NULL;
int ok = 0, i;
CONF_VALUE *v = NULL, *vv;
if ((sk = sk_CONF_VALUE_new_null()) == NULL)
goto err;
if ((v = OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL)
goto err;
i = strlen(section) + 1;
if ((v->section = OPENSSL_malloc(i)) == NULL)
goto err;
memcpy(v->section, section, i);
v->name = NULL;
v->value = (char *)sk;
vv = lh_CONF_VALUE_insert(conf->data, v);
OPENSSL_assert(vv == NULL);
if (lh_CONF_VALUE_error(conf->data) > 0)
goto err;
ok = 1;
err:
if (!ok) {
if (sk != NULL)
sk_CONF_VALUE_free(sk);
if (v != NULL)
OPENSSL_free(v);
v = NULL;
}
return (v);
}
IMPLEMENT_STACK_OF(CONF_VALUE)