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706 lines
20 KiB
706 lines
20 KiB
/* 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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|
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/* Part of the code in here was originally in conf.c, which is now removed */ |
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|
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#include <stdio.h> |
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#include <string.h> |
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#include "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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|
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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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|
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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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|
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const char CONF_def_version[] = "CONF_def" OPENSSL_VERSION_PTEXT; |
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|
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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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|
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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(CONF) + sizeof(unsigned short *)); |
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if (ret) |
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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 = 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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|
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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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|
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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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|
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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 = BUF_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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|
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if (!(v = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) { |
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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 = (char *)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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BUF_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 1 |
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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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#else |
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v->section = tv->section; |
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if (!sk_CONF_VALUE_push(ts, v)) { |
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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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vv = (CONF_VALUE *)lh_insert(conf->data, v); |
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if (vv != NULL) { |
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sk_CONF_VALUE_delete_ptr(ts, vv); |
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OPENSSL_free(vv->name); |
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OPENSSL_free(vv->value); |
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OPENSSL_free(vv); |
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} |
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#endif |
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v = NULL; |
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} |
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} |
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if (buff != NULL) |
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BUF_MEM_free(buff); |
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if (section != NULL) |
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OPENSSL_free(section); |
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return (1); |
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err: |
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if (buff != NULL) |
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BUF_MEM_free(buff); |
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if (section != NULL) |
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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) && (conf->data != NULL)) { |
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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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if (v->name != NULL) |
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OPENSSL_free(v->name); |
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if (v->value != NULL) |
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OPENSSL_free(v->value); |
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if (v != NULL) |
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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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|
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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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|
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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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|
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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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|
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if ((buf = BUF_MEM_new()) == NULL) |
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return (0); |
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|
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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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|
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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] == ':')) { |
|
cp = np; |
|
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; |
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*e = '\0'; |
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rp = e; |
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if (q) { |
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if (r != q) { |
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CONFerr(CONF_F_STR_COPY, CONF_R_NO_CLOSE_BRACE); |
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goto err; |
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} |
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e++; |
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} |
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/*- |
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* So at this point we have |
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* np which is the start of the name string which is |
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* '\0' terminated. |
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* cp which is the start of the section string which is |
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* '\0' terminated. |
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* e is the 'next point after'. |
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* r and rr are the chars replaced by the '\0' |
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* rp and rrp is where 'r' and 'rr' came from. |
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*/ |
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p = _CONF_get_string(conf, cp, np); |
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if (rrp != NULL) |
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*rrp = rr; |
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*rp = r; |
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if (p == NULL) { |
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CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_HAS_NO_VALUE); |
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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'; |
|
if (*pto != NULL) |
|
OPENSSL_free(*pto); |
|
*pto = buf->data; |
|
OPENSSL_free(buf); |
|
return (1); |
|
err: |
|
if (buf != NULL) |
|
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(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); |
|
} |
|
|
|
static IMPLEMENT_LHASH_DOALL_ARG_FN(dump_value, CONF_VALUE, BIO) |
|
|
|
static int def_dump(const CONF *conf, BIO *out) |
|
{ |
|
lh_CONF_VALUE_doall_arg(conf->data, LHASH_DOALL_ARG_FN(dump_value), |
|
BIO, 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'; |
|
}
|
|
|