conf_api.c
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上传日期:2020-08-09
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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 <string.h>
- #include <openssl/conf.h>
- #include <openssl/conf_api.h>
- #include "e_os.h"
- static void value_free_hash(CONF_VALUE *a, LHASH *conf);
- static void value_free_stack(CONF_VALUE *a,LHASH *conf);
- static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_hash, CONF_VALUE *, LHASH *)
- static IMPLEMENT_LHASH_DOALL_ARG_FN(value_free_stack, CONF_VALUE *, LHASH *)
- /* We don't use function pointer casting or wrapper functions - but cast each
- * callback parameter inside the callback functions. */
- /* static unsigned long hash(CONF_VALUE *v); */
- static unsigned long hash(const void *v_void);
- /* static int cmp_conf(CONF_VALUE *a,CONF_VALUE *b); */
- static int cmp_conf(const void *a_void,const void *b_void);
- /* 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=(CONF_VALUE *)lh_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 = (CONF_VALUE *)lh_insert(conf->data, value);
- if (v != NULL)
- {
- 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=(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=(char *)name;
- v=(CONF_VALUE *)lh_retrieve(conf->data,&vv);
- if (v != NULL)
- return(v->value);
- else
- return(NULL);
- }
- else
- return(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
- int _CONF_new_data(CONF *conf)
- {
- if (conf == NULL)
- {
- return 0;
- }
- if (conf->data == NULL)
- if ((conf->data = lh_new(hash, cmp_conf)) == NULL)
- {
- return 0;
- }
- return 1;
- }
- void _CONF_free_data(CONF *conf)
- {
- if (conf == NULL || conf->data == NULL) return;
- conf->data->down_load=0; /* evil thing to make sure the 'OPENSSL_free()'
- * works as expected */
- lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_hash),
- conf->data);
- /* We now have only 'section' entries in the hash table.
- * Due to problems with */
- lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(value_free_stack),
- conf->data);
- 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);
- OPENSSL_free(vv->value);
- OPENSSL_free(vv->name);
- OPENSSL_free(vv);
- }
- if (sk != NULL) sk_free(sk);
- OPENSSL_free(a->section);
- OPENSSL_free(a);
- }
- /* static unsigned long hash(CONF_VALUE *v) */
- static unsigned long hash(const void *v_void)
- {
- CONF_VALUE *v = (CONF_VALUE *)v_void;
- return((lh_strhash(v->section)<<2)^lh_strhash(v->name));
- }
- /* static int cmp_conf(CONF_VALUE *a, CONF_VALUE *b) */
- static int cmp_conf(const void *a_void,const void *b_void)
- {
- int i;
- CONF_VALUE *a = (CONF_VALUE *)a_void;
- CONF_VALUE *b = (CONF_VALUE *)b_void;
- 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);
- }
- /* Up until OpenSSL 0.9.5a, this was new_section */
- CONF_VALUE *_CONF_new_section(CONF *conf, const char *section)
- {
- STACK *sk=NULL;
- int ok=0,i;
- CONF_VALUE *v=NULL,*vv;
- if ((sk=sk_new_null()) == NULL)
- goto err;
- if ((v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL)
- goto err;
- i=strlen(section)+1;
- if ((v->section=(char *)OPENSSL_malloc(i)) == NULL)
- goto err;
- memcpy(v->section,section,i);
- v->name=NULL;
- v->value=(char *)sk;
-
- vv=(CONF_VALUE *)lh_insert(conf->data,v);
- assert(vv == NULL);
- ok=1;
- err:
- if (!ok)
- {
- if (sk != NULL) sk_free(sk);
- if (v != NULL) OPENSSL_free(v);
- v=NULL;
- }
- return(v);
- }
- IMPLEMENT_STACK_OF(CONF_VALUE)