679 lines
19 KiB
C
679 lines
19 KiB
C
/* crypto/conf/conf.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/* Part of the code in here was originally in conf.c, which is now removed */
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#include <stdio.h>
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#include <string.h>
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#include "internal/cryptlib.h"
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#include <openssl/stack.h>
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#include <openssl/lhash.h>
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#include <openssl/conf.h>
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#include <openssl/conf_api.h>
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#include "conf_def.h"
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#include <openssl/buffer.h>
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#include <openssl/err.h>
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static char *eat_ws(CONF *conf, char *p);
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static char *eat_alpha_numeric(CONF *conf, char *p);
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static void clear_comments(CONF *conf, char *p);
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static int str_copy(CONF *conf, char *section, char **to, char *from);
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static char *scan_quote(CONF *conf, char *p);
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static char *scan_dquote(CONF *conf, char *p);
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#define scan_esc(conf,p) (((IS_EOF((conf),(p)[1]))?((p)+1):((p)+2)))
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static CONF *def_create(CONF_METHOD *meth);
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static int def_init_default(CONF *conf);
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static int def_init_WIN32(CONF *conf);
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static int def_destroy(CONF *conf);
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static int def_destroy_data(CONF *conf);
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static int def_load(CONF *conf, const char *name, long *eline);
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static int def_load_bio(CONF *conf, BIO *bp, long *eline);
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static int def_dump(const CONF *conf, BIO *bp);
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static int def_is_number(const CONF *conf, char c);
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static int def_to_int(const CONF *conf, char c);
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static CONF_METHOD default_method = {
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"OpenSSL default",
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def_create,
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def_init_default,
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def_destroy,
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def_destroy_data,
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def_load_bio,
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def_dump,
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def_is_number,
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def_to_int,
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def_load
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};
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static CONF_METHOD WIN32_method = {
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"WIN32",
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def_create,
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def_init_WIN32,
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def_destroy,
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def_destroy_data,
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def_load_bio,
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def_dump,
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def_is_number,
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def_to_int,
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def_load
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};
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CONF_METHOD *NCONF_default()
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{
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return &default_method;
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}
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CONF_METHOD *NCONF_WIN32()
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{
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return &WIN32_method;
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}
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static CONF *def_create(CONF_METHOD *meth)
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{
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CONF *ret;
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ret = OPENSSL_malloc(sizeof(*ret));
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if (ret != NULL)
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if (meth->init(ret) == 0) {
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OPENSSL_free(ret);
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ret = NULL;
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}
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return ret;
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}
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static int def_init_default(CONF *conf)
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{
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if (conf == NULL)
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return 0;
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conf->meth = &default_method;
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conf->meth_data = (void *)CONF_type_default;
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conf->data = NULL;
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return 1;
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}
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static int def_init_WIN32(CONF *conf)
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{
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if (conf == NULL)
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return 0;
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conf->meth = &WIN32_method;
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conf->meth_data = (void *)CONF_type_win32;
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conf->data = NULL;
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return 1;
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}
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static int def_destroy(CONF *conf)
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{
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if (def_destroy_data(conf)) {
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OPENSSL_free(conf);
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return 1;
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}
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return 0;
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}
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static int def_destroy_data(CONF *conf)
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{
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if (conf == NULL)
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return 0;
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_CONF_free_data(conf);
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return 1;
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}
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static int def_load(CONF *conf, const char *name, long *line)
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{
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int ret;
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BIO *in = NULL;
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#ifdef OPENSSL_SYS_VMS
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in = BIO_new_file(name, "r");
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#else
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in = BIO_new_file(name, "rb");
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#endif
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if (in == NULL) {
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if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE)
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CONFerr(CONF_F_DEF_LOAD, CONF_R_NO_SUCH_FILE);
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else
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CONFerr(CONF_F_DEF_LOAD, ERR_R_SYS_LIB);
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return 0;
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}
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ret = def_load_bio(conf, in, line);
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BIO_free(in);
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return ret;
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}
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static int def_load_bio(CONF *conf, BIO *in, long *line)
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{
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/* The macro BUFSIZE conflicts with a system macro in VxWorks */
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#define CONFBUFSIZE 512
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int bufnum = 0, i, ii;
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BUF_MEM *buff = NULL;
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char *s, *p, *end;
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int again;
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long eline = 0;
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char btmp[DECIMAL_SIZE(eline) + 1];
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CONF_VALUE *v = NULL, *tv;
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CONF_VALUE *sv = NULL;
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char *section = NULL, *buf;
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char *start, *psection, *pname;
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void *h = (void *)(conf->data);
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if ((buff = BUF_MEM_new()) == NULL) {
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CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
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goto err;
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}
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section = OPENSSL_strdup("default");
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if (section == NULL) {
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CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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if (_CONF_new_data(conf) == 0) {
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CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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sv = _CONF_new_section(conf, section);
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if (sv == NULL) {
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CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
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goto err;
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}
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bufnum = 0;
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again = 0;
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for (;;) {
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if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) {
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CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
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goto err;
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}
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p = &(buff->data[bufnum]);
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*p = '\0';
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BIO_gets(in, p, CONFBUFSIZE - 1);
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p[CONFBUFSIZE - 1] = '\0';
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ii = i = strlen(p);
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if (i == 0 && !again)
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break;
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again = 0;
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while (i > 0) {
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if ((p[i - 1] != '\r') && (p[i - 1] != '\n'))
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break;
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else
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i--;
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}
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/*
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* we removed some trailing stuff so there is a new line on the end.
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*/
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if (ii && i == ii)
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again = 1; /* long line */
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else {
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p[i] = '\0';
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eline++; /* another input line */
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}
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/* we now have a line with trailing \r\n removed */
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/* i is the number of bytes */
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bufnum += i;
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v = NULL;
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/* check for line continuation */
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if (bufnum >= 1) {
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/*
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* If we have bytes and the last char '\\' and second last char
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* is not '\\'
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*/
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p = &(buff->data[bufnum - 1]);
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if (IS_ESC(conf, p[0]) && ((bufnum <= 1) || !IS_ESC(conf, p[-1]))) {
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bufnum--;
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again = 1;
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}
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}
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if (again)
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continue;
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bufnum = 0;
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buf = buff->data;
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clear_comments(conf, buf);
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s = eat_ws(conf, buf);
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if (IS_EOF(conf, *s))
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continue; /* blank line */
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if (*s == '[') {
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char *ss;
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s++;
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start = eat_ws(conf, s);
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ss = start;
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again:
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end = eat_alpha_numeric(conf, ss);
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p = eat_ws(conf, end);
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if (*p != ']') {
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if (*p != '\0' && ss != p) {
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ss = p;
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goto again;
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}
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CONFerr(CONF_F_DEF_LOAD_BIO,
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CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
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goto err;
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}
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*end = '\0';
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if (!str_copy(conf, NULL, §ion, start))
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goto err;
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if ((sv = _CONF_get_section(conf, section)) == NULL)
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sv = _CONF_new_section(conf, section);
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if (sv == NULL) {
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CONFerr(CONF_F_DEF_LOAD_BIO,
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CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
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goto err;
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}
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continue;
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} else {
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pname = s;
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psection = NULL;
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end = eat_alpha_numeric(conf, s);
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if ((end[0] == ':') && (end[1] == ':')) {
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*end = '\0';
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end += 2;
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psection = pname;
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pname = end;
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end = eat_alpha_numeric(conf, end);
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}
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p = eat_ws(conf, end);
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if (*p != '=') {
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CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_MISSING_EQUAL_SIGN);
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goto err;
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}
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*end = '\0';
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p++;
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start = eat_ws(conf, p);
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while (!IS_EOF(conf, *p))
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p++;
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p--;
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while ((p != start) && (IS_WS(conf, *p)))
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p--;
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p++;
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*p = '\0';
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if ((v = OPENSSL_malloc(sizeof(*v))) == NULL) {
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CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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if (psection == NULL)
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psection = section;
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v->name = OPENSSL_malloc(strlen(pname) + 1);
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v->value = NULL;
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if (v->name == NULL) {
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CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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OPENSSL_strlcpy(v->name, pname, strlen(pname) + 1);
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if (!str_copy(conf, psection, &(v->value), start))
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goto err;
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if (strcmp(psection, section) != 0) {
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if ((tv = _CONF_get_section(conf, psection))
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== NULL)
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tv = _CONF_new_section(conf, psection);
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if (tv == NULL) {
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CONFerr(CONF_F_DEF_LOAD_BIO,
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CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
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goto err;
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}
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} else
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tv = sv;
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if (_CONF_add_string(conf, tv, v) == 0) {
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CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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v = NULL;
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}
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}
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BUF_MEM_free(buff);
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OPENSSL_free(section);
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return (1);
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err:
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BUF_MEM_free(buff);
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OPENSSL_free(section);
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if (line != NULL)
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*line = eline;
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BIO_snprintf(btmp, sizeof btmp, "%ld", eline);
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ERR_add_error_data(2, "line ", btmp);
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if (h != conf->data) {
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CONF_free(conf->data);
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conf->data = NULL;
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}
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if (v != NULL) {
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OPENSSL_free(v->name);
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OPENSSL_free(v->value);
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OPENSSL_free(v);
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}
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return (0);
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}
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static void clear_comments(CONF *conf, char *p)
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{
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for (;;) {
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if (IS_FCOMMENT(conf, *p)) {
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*p = '\0';
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return;
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}
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if (!IS_WS(conf, *p)) {
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break;
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}
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p++;
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}
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for (;;) {
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if (IS_COMMENT(conf, *p)) {
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*p = '\0';
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return;
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}
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if (IS_DQUOTE(conf, *p)) {
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p = scan_dquote(conf, p);
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continue;
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}
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if (IS_QUOTE(conf, *p)) {
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p = scan_quote(conf, p);
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continue;
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}
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if (IS_ESC(conf, *p)) {
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p = scan_esc(conf, p);
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continue;
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}
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if (IS_EOF(conf, *p))
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return;
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else
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p++;
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}
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}
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static int str_copy(CONF *conf, char *section, char **pto, char *from)
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{
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int q, r, rr = 0, to = 0, len = 0;
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char *s, *e, *rp, *p, *rrp, *np, *cp, v;
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BUF_MEM *buf;
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if ((buf = BUF_MEM_new()) == NULL)
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return (0);
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len = strlen(from) + 1;
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if (!BUF_MEM_grow(buf, len))
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goto err;
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for (;;) {
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if (IS_QUOTE(conf, *from)) {
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q = *from;
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from++;
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while (!IS_EOF(conf, *from) && (*from != q)) {
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if (IS_ESC(conf, *from)) {
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from++;
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if (IS_EOF(conf, *from))
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break;
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}
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buf->data[to++] = *(from++);
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}
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if (*from == q)
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from++;
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} else if (IS_DQUOTE(conf, *from)) {
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q = *from;
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from++;
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while (!IS_EOF(conf, *from)) {
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if (*from == q) {
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if (*(from + 1) == q) {
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from++;
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} else {
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break;
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}
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}
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buf->data[to++] = *(from++);
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}
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if (*from == q)
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from++;
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} else if (IS_ESC(conf, *from)) {
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from++;
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v = *(from++);
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if (IS_EOF(conf, v))
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break;
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else if (v == 'r')
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v = '\r';
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else if (v == 'n')
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v = '\n';
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else if (v == 'b')
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v = '\b';
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else if (v == 't')
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v = '\t';
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buf->data[to++] = v;
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} else if (IS_EOF(conf, *from))
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break;
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else if (*from == '$') {
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/* try to expand it */
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rrp = NULL;
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s = &(from[1]);
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if (*s == '{')
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q = '}';
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else if (*s == '(')
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q = ')';
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else
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q = 0;
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if (q)
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s++;
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cp = section;
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e = np = s;
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while (IS_ALPHA_NUMERIC(conf, *e))
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e++;
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if ((e[0] == ':') && (e[1] == ':')) {
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cp = np;
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rrp = e;
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rr = *e;
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*rrp = '\0';
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e += 2;
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np = e;
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while (IS_ALPHA_NUMERIC(conf, *e))
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e++;
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}
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r = *e;
|
|
*e = '\0';
|
|
rp = e;
|
|
if (q) {
|
|
if (r != q) {
|
|
CONFerr(CONF_F_STR_COPY, CONF_R_NO_CLOSE_BRACE);
|
|
goto err;
|
|
}
|
|
e++;
|
|
}
|
|
/*-
|
|
* So at this point we have
|
|
* np which is the start of the name string which is
|
|
* '\0' terminated.
|
|
* cp which is the start of the section string which is
|
|
* '\0' terminated.
|
|
* e is the 'next point after'.
|
|
* r and rr are the chars replaced by the '\0'
|
|
* rp and rrp is where 'r' and 'rr' came from.
|
|
*/
|
|
p = _CONF_get_string(conf, cp, np);
|
|
if (rrp != NULL)
|
|
*rrp = rr;
|
|
*rp = r;
|
|
if (p == NULL) {
|
|
CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_HAS_NO_VALUE);
|
|
goto err;
|
|
}
|
|
if (!BUF_MEM_grow_clean(buf,
|
|
(strlen(p) + buf->length - (e - from)))) {
|
|
CONFerr(CONF_F_STR_COPY, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
while (*p)
|
|
buf->data[to++] = *(p++);
|
|
|
|
/*
|
|
* Since we change the pointer 'from', we also have to change the
|
|
* perceived length of the string it points at. /RL
|
|
*/
|
|
len -= e - from;
|
|
from = e;
|
|
|
|
/*
|
|
* In case there were no braces or parenthesis around the
|
|
* variable reference, we have to put back the character that was
|
|
* replaced with a '\0'. /RL
|
|
*/
|
|
*rp = r;
|
|
} else
|
|
buf->data[to++] = *(from++);
|
|
}
|
|
buf->data[to] = '\0';
|
|
OPENSSL_free(*pto);
|
|
*pto = buf->data;
|
|
OPENSSL_free(buf);
|
|
return (1);
|
|
err:
|
|
BUF_MEM_free(buf);
|
|
return (0);
|
|
}
|
|
|
|
static char *eat_ws(CONF *conf, char *p)
|
|
{
|
|
while (IS_WS(conf, *p) && (!IS_EOF(conf, *p)))
|
|
p++;
|
|
return (p);
|
|
}
|
|
|
|
static char *eat_alpha_numeric(CONF *conf, char *p)
|
|
{
|
|
for (;;) {
|
|
if (IS_ESC(conf, *p)) {
|
|
p = scan_esc(conf, p);
|
|
continue;
|
|
}
|
|
if (!IS_ALPHA_NUMERIC_PUNCT(conf, *p))
|
|
return (p);
|
|
p++;
|
|
}
|
|
}
|
|
|
|
static char *scan_quote(CONF *conf, char *p)
|
|
{
|
|
int q = *p;
|
|
|
|
p++;
|
|
while (!(IS_EOF(conf, *p)) && (*p != q)) {
|
|
if (IS_ESC(conf, *p)) {
|
|
p++;
|
|
if (IS_EOF(conf, *p))
|
|
return (p);
|
|
}
|
|
p++;
|
|
}
|
|
if (*p == q)
|
|
p++;
|
|
return (p);
|
|
}
|
|
|
|
static char *scan_dquote(CONF *conf, char *p)
|
|
{
|
|
int q = *p;
|
|
|
|
p++;
|
|
while (!(IS_EOF(conf, *p))) {
|
|
if (*p == q) {
|
|
if (*(p + 1) == q) {
|
|
p++;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
p++;
|
|
}
|
|
if (*p == q)
|
|
p++;
|
|
return (p);
|
|
}
|
|
|
|
static void dump_value_doall_arg(const CONF_VALUE *a, BIO *out)
|
|
{
|
|
if (a->name)
|
|
BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value);
|
|
else
|
|
BIO_printf(out, "[[%s]]\n", a->section);
|
|
}
|
|
|
|
IMPLEMENT_LHASH_DOALL_ARG_CONST(CONF_VALUE, BIO);
|
|
|
|
static int def_dump(const CONF *conf, BIO *out)
|
|
{
|
|
lh_CONF_VALUE_doall_BIO(conf->data, dump_value_doall_arg, out);
|
|
return 1;
|
|
}
|
|
|
|
static int def_is_number(const CONF *conf, char c)
|
|
{
|
|
return IS_NUMBER(conf, c);
|
|
}
|
|
|
|
static int def_to_int(const CONF *conf, char c)
|
|
{
|
|
return c - '0';
|
|
}
|