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			893 lines
		
	
	
	
		
			24 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			893 lines
		
	
	
	
		
			24 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
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|  *
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|  * Licensed under the OpenSSL license (the "License").  You may not use
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|  * this file except in compliance with the License.  You can obtain a copy
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|  * in the file LICENSE in the source distribution or at
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|  * https://www.openssl.org/source/license.html
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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 "internal/cryptlib.h"
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| #include "internal/o_dir.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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| #ifndef OPENSSL_NO_POSIX_IO
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| # include <sys/stat.h>
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| # ifdef _WIN32
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| #  define stat    _stat
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| #  define strcasecmp _stricmp
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| # endif
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| #endif
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| 
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| #ifndef S_ISDIR
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| # define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR)
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| #endif
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| 
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| /*
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|  * The maximum length we can grow a value to after variable expansion. 64k
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|  * should be more than enough for all reasonable uses.
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|  */
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| #define MAX_CONF_VALUE_LENGTH       65536
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| 
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| static int is_keytype(const CONF *conf, char c, unsigned short type);
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| static char *eat_ws(CONF *conf, char *p);
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| static void trim_ws(CONF *conf, char *start);
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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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| #ifndef OPENSSL_NO_POSIX_IO
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| static BIO *process_include(char *include, OPENSSL_DIR_CTX **dirctx,
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|                             char **dirpath);
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| static BIO *get_next_file(const char *path, OPENSSL_DIR_CTX **dirctx);
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| #endif
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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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| 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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| 
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| CONF_METHOD *NCONF_default(void)
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| {
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|     return &default_method;
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| }
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| 
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| CONF_METHOD *NCONF_WIN32(void)
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| {
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|     return &WIN32_method;
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| }
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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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| 
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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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| 
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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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| 
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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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| 
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|     return 1;
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| }
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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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| 
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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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| 
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|     return 1;
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| }
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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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| 
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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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| 
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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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| 
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|     return ret;
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| }
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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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|     int first_call = 1;
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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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|     STACK_OF(BIO) *biosk = NULL;
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| #ifndef OPENSSL_NO_POSIX_IO
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|     char *dirpath = NULL;
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|     OPENSSL_DIR_CTX *dirctx = NULL;
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| #endif
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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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| 
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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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| 
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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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| 
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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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| 
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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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|  read_retry:
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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 (first_call) {
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|             /* Other BOMs imply unsupported multibyte encoding,
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|              * so don't strip them and let the error raise */
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|             const unsigned char utf8_bom[3] = {0xEF, 0xBB, 0xBF};
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| 
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|             if (i >= 3 && memcmp(p, utf8_bom, 3) == 0) {
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|                 memmove(p, p + 3, i - 3);
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|                 p[i - 3] = 0;
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|                 i -= 3;
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|                 ii -= 3;
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|             }
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|             first_call = 0;
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|         }
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|         if (i == 0 && !again) {
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|             /* the currently processed BIO is at EOF */
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|             BIO *parent;
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| 
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| #ifndef OPENSSL_NO_POSIX_IO
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|             /* continue processing with the next file from directory */
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|             if (dirctx != NULL) {
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|                 BIO *next;
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| 
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|                 if ((next = get_next_file(dirpath, &dirctx)) != NULL) {
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|                     BIO_vfree(in);
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|                     in = next;
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|                     goto read_retry;
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|                 } else {
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|                     OPENSSL_free(dirpath);
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|                     dirpath = NULL;
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|                 }
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|             }
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| #endif
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|             /* no more files in directory, continue with processing parent */
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|             if ((parent = sk_BIO_pop(biosk)) == NULL) {
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|                 /* everything processed get out of the loop */
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|                 break;
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|             } else {
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|                 BIO_vfree(in);
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|                 in = parent;
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|                 goto read_retry;
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|             }
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|         }
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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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| 
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|         /* we now have a line with trailing \r\n removed */
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| 
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|         /* i is the number of bytes */
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|         bufnum += i;
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| 
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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]);
 | |
|             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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|         }
 | |
|         if (again)
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|             continue;
 | |
|         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);
 | |
|         if (IS_EOF(conf, *s))
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|             continue;           /* blank line */
 | |
|         if (*s == '[') {
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|             char *ss;
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| 
 | |
|             s++;
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|             start = eat_ws(conf, s);
 | |
|             ss = start;
 | |
|  again:
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|             end = eat_alpha_numeric(conf, ss);
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|             p = eat_ws(conf, end);
 | |
|             if (*p != ']') {
 | |
|                 if (*p != '\0' && ss != p) {
 | |
|                     ss = p;
 | |
|                     goto again;
 | |
|                 }
 | |
|                 CONFerr(CONF_F_DEF_LOAD_BIO,
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|                         CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
 | |
|                 goto err;
 | |
|             }
 | |
|             *end = '\0';
 | |
|             if (!str_copy(conf, NULL, §ion, start))
 | |
|                 goto err;
 | |
|             if ((sv = _CONF_get_section(conf, section)) == NULL)
 | |
|                 sv = _CONF_new_section(conf, section);
 | |
|             if (sv == NULL) {
 | |
|                 CONFerr(CONF_F_DEF_LOAD_BIO,
 | |
|                         CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
 | |
|                 goto err;
 | |
|             }
 | |
|             continue;
 | |
|         } else {
 | |
|             pname = s;
 | |
|             end = eat_alpha_numeric(conf, s);
 | |
|             if ((end[0] == ':') && (end[1] == ':')) {
 | |
|                 *end = '\0';
 | |
|                 end += 2;
 | |
|                 psection = pname;
 | |
|                 pname = end;
 | |
|                 end = eat_alpha_numeric(conf, end);
 | |
|             } else {
 | |
|                 psection = section;
 | |
|             }
 | |
|             p = eat_ws(conf, end);
 | |
|             if (strncmp(pname, ".include", 8) == 0
 | |
|                 && (p != pname + 8 || *p == '=')) {
 | |
|                 char *include = NULL;
 | |
|                 BIO *next;
 | |
| 
 | |
|                 if (*p == '=') {
 | |
|                     p++;
 | |
|                     p = eat_ws(conf, p);
 | |
|                 }
 | |
|                 trim_ws(conf, p);
 | |
|                 if (!str_copy(conf, psection, &include, p))
 | |
|                     goto err;
 | |
|                 /* get the BIO of the included file */
 | |
| #ifndef OPENSSL_NO_POSIX_IO
 | |
|                 next = process_include(include, &dirctx, &dirpath);
 | |
|                 if (include != dirpath) {
 | |
|                     /* dirpath will contain include in case of a directory */
 | |
|                     OPENSSL_free(include);
 | |
|                 }
 | |
| #else
 | |
|                 next = BIO_new_file(include, "r");
 | |
|                 OPENSSL_free(include);
 | |
| #endif
 | |
|                 if (next != NULL) {
 | |
|                     /* push the currently processing BIO onto stack */
 | |
|                     if (biosk == NULL) {
 | |
|                         if ((biosk = sk_BIO_new_null()) == NULL) {
 | |
|                             CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
 | |
|                             BIO_free(next);
 | |
|                             goto err;
 | |
|                         }
 | |
|                     }
 | |
|                     if (!sk_BIO_push(biosk, in)) {
 | |
|                         CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
 | |
|                         BIO_free(next);
 | |
|                         goto err;
 | |
|                     }
 | |
|                     /* continue with reading from the included BIO */
 | |
|                     in = next;
 | |
|                 }
 | |
|                 continue;
 | |
|             } else if (*p != '=') {
 | |
|                 CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_MISSING_EQUAL_SIGN);
 | |
|                 goto err;
 | |
|             }
 | |
|             *end = '\0';
 | |
|             p++;
 | |
|             start = eat_ws(conf, p);
 | |
|             trim_ws(conf, start);
 | |
| 
 | |
|             if ((v = OPENSSL_malloc(sizeof(*v))) == NULL) {
 | |
|                 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
 | |
|                 goto err;
 | |
|             }
 | |
|             v->name = OPENSSL_strdup(pname);
 | |
|             v->value = NULL;
 | |
|             if (v->name == NULL) {
 | |
|                 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
 | |
|                 goto err;
 | |
|             }
 | |
|             if (!str_copy(conf, psection, &(v->value), start))
 | |
|                 goto err;
 | |
| 
 | |
|             if (strcmp(psection, section) != 0) {
 | |
|                 if ((tv = _CONF_get_section(conf, psection))
 | |
|                     == NULL)
 | |
|                     tv = _CONF_new_section(conf, psection);
 | |
|                 if (tv == NULL) {
 | |
|                     CONFerr(CONF_F_DEF_LOAD_BIO,
 | |
|                             CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
 | |
|                     goto err;
 | |
|                 }
 | |
|             } else
 | |
|                 tv = sv;
 | |
|             if (_CONF_add_string(conf, tv, v) == 0) {
 | |
|                 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
 | |
|                 goto err;
 | |
|             }
 | |
|             v = NULL;
 | |
|         }
 | |
|     }
 | |
|     BUF_MEM_free(buff);
 | |
|     OPENSSL_free(section);
 | |
|     /*
 | |
|      * No need to pop, since we only get here if the stack is empty.
 | |
|      * If this causes a BIO leak, THE ISSUE IS SOMEWHERE ELSE!
 | |
|      */
 | |
|     sk_BIO_free(biosk);
 | |
|     return 1;
 | |
|  err:
 | |
|     BUF_MEM_free(buff);
 | |
|     OPENSSL_free(section);
 | |
|     /*
 | |
|      * Since |in| is the first element of the stack and should NOT be freed
 | |
|      * here, we cannot use sk_BIO_pop_free().  Instead, we pop and free one
 | |
|      * BIO at a time, making sure that the last one popped isn't.
 | |
|      */
 | |
|     while (sk_BIO_num(biosk) > 0) {
 | |
|         BIO *popped = sk_BIO_pop(biosk);
 | |
|         BIO_vfree(in);
 | |
|         in = popped;
 | |
|     }
 | |
|     sk_BIO_free(biosk);
 | |
| #ifndef OPENSSL_NO_POSIX_IO
 | |
|     OPENSSL_free(dirpath);
 | |
|     if (dirctx != NULL)
 | |
|         OPENSSL_DIR_end(&dirctx);
 | |
| #endif
 | |
|     if (line != NULL)
 | |
|         *line = eline;
 | |
|     BIO_snprintf(btmp, sizeof(btmp), "%ld", eline);
 | |
|     ERR_add_error_data(2, "line ", btmp);
 | |
|     if (h != conf->data) {
 | |
|         CONF_free(conf->data);
 | |
|         conf->data = NULL;
 | |
|     }
 | |
|     if (v != NULL) {
 | |
|         OPENSSL_free(v->name);
 | |
|         OPENSSL_free(v->value);
 | |
|         OPENSSL_free(v);
 | |
|     }
 | |
|     return 0;
 | |
| }
 | |
| 
 | |
| static void clear_comments(CONF *conf, char *p)
 | |
| {
 | |
|     for (;;) {
 | |
|         if (IS_FCOMMENT(conf, *p)) {
 | |
|             *p = '\0';
 | |
|             return;
 | |
|         }
 | |
|         if (!IS_WS(conf, *p)) {
 | |
|             break;
 | |
|         }
 | |
|         p++;
 | |
|     }
 | |
| 
 | |
|     for (;;) {
 | |
|         if (IS_COMMENT(conf, *p)) {
 | |
|             *p = '\0';
 | |
|             return;
 | |
|         }
 | |
|         if (IS_DQUOTE(conf, *p)) {
 | |
|             p = scan_dquote(conf, p);
 | |
|             continue;
 | |
|         }
 | |
|         if (IS_QUOTE(conf, *p)) {
 | |
|             p = scan_quote(conf, p);
 | |
|             continue;
 | |
|         }
 | |
|         if (IS_ESC(conf, *p)) {
 | |
|             p = scan_esc(conf, p);
 | |
|             continue;
 | |
|         }
 | |
|         if (IS_EOF(conf, *p))
 | |
|             return;
 | |
|         else
 | |
|             p++;
 | |
|     }
 | |
| }
 | |
| 
 | |
| static int str_copy(CONF *conf, char *section, char **pto, char *from)
 | |
| {
 | |
|     int q, r, rr = 0, to = 0, len = 0;
 | |
|     char *s, *e, *rp, *p, *rrp, *np, *cp, v;
 | |
|     BUF_MEM *buf;
 | |
| 
 | |
|     if ((buf = BUF_MEM_new()) == NULL)
 | |
|         return 0;
 | |
| 
 | |
|     len = strlen(from) + 1;
 | |
|     if (!BUF_MEM_grow(buf, len))
 | |
|         goto err;
 | |
| 
 | |
|     for (;;) {
 | |
|         if (IS_QUOTE(conf, *from)) {
 | |
|             q = *from;
 | |
|             from++;
 | |
|             while (!IS_EOF(conf, *from) && (*from != q)) {
 | |
|                 if (IS_ESC(conf, *from)) {
 | |
|                     from++;
 | |
|                     if (IS_EOF(conf, *from))
 | |
|                         break;
 | |
|                 }
 | |
|                 buf->data[to++] = *(from++);
 | |
|             }
 | |
|             if (*from == q)
 | |
|                 from++;
 | |
|         } else if (IS_DQUOTE(conf, *from)) {
 | |
|             q = *from;
 | |
|             from++;
 | |
|             while (!IS_EOF(conf, *from)) {
 | |
|                 if (*from == q) {
 | |
|                     if (*(from + 1) == q) {
 | |
|                         from++;
 | |
|                     } else {
 | |
|                         break;
 | |
|                     }
 | |
|                 }
 | |
|                 buf->data[to++] = *(from++);
 | |
|             }
 | |
|             if (*from == q)
 | |
|                 from++;
 | |
|         } else if (IS_ESC(conf, *from)) {
 | |
|             from++;
 | |
|             v = *(from++);
 | |
|             if (IS_EOF(conf, v))
 | |
|                 break;
 | |
|             else if (v == 'r')
 | |
|                 v = '\r';
 | |
|             else if (v == 'n')
 | |
|                 v = '\n';
 | |
|             else if (v == 'b')
 | |
|                 v = '\b';
 | |
|             else if (v == 't')
 | |
|                 v = '\t';
 | |
|             buf->data[to++] = v;
 | |
|         } else if (IS_EOF(conf, *from))
 | |
|             break;
 | |
|         else if (*from == '$') {
 | |
|             size_t newsize;
 | |
| 
 | |
|             /* try to expand it */
 | |
|             rrp = NULL;
 | |
|             s = &(from[1]);
 | |
|             if (*s == '{')
 | |
|                 q = '}';
 | |
|             else if (*s == '(')
 | |
|                 q = ')';
 | |
|             else
 | |
|                 q = 0;
 | |
| 
 | |
|             if (q)
 | |
|                 s++;
 | |
|             cp = section;
 | |
|             e = np = s;
 | |
|             while (IS_ALNUM(conf, *e))
 | |
|                 e++;
 | |
|             if ((e[0] == ':') && (e[1] == ':')) {
 | |
|                 cp = np;
 | |
|                 rrp = e;
 | |
|                 rr = *e;
 | |
|                 *rrp = '\0';
 | |
|                 e += 2;
 | |
|                 np = e;
 | |
|                 while (IS_ALNUM(conf, *e))
 | |
|                     e++;
 | |
|             }
 | |
|             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;
 | |
|             }
 | |
|             newsize = strlen(p) + buf->length - (e - from);
 | |
|             if (newsize > MAX_CONF_VALUE_LENGTH) {
 | |
|                 CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_EXPANSION_TOO_LONG);
 | |
|                 goto err;
 | |
|             }
 | |
|             if (!BUF_MEM_grow_clean(buf, newsize)) {
 | |
|                 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;
 | |
| }
 | |
| 
 | |
| #ifndef OPENSSL_NO_POSIX_IO
 | |
| /*
 | |
|  * Check whether included path is a directory.
 | |
|  * Returns next BIO to process and in case of a directory
 | |
|  * also an opened directory context and the include path.
 | |
|  */
 | |
| static BIO *process_include(char *include, OPENSSL_DIR_CTX **dirctx,
 | |
|                             char **dirpath)
 | |
| {
 | |
|     struct stat st = { 0 };
 | |
|     BIO *next;
 | |
| 
 | |
|     if (stat(include, &st) < 0) {
 | |
|         SYSerr(SYS_F_STAT, errno);
 | |
|         ERR_add_error_data(1, include);
 | |
|         /* missing include file is not fatal error */
 | |
|         return NULL;
 | |
|     }
 | |
| 
 | |
|     if (S_ISDIR(st.st_mode)) {
 | |
|         if (*dirctx != NULL) {
 | |
|             CONFerr(CONF_F_PROCESS_INCLUDE,
 | |
|                     CONF_R_RECURSIVE_DIRECTORY_INCLUDE);
 | |
|             ERR_add_error_data(1, include);
 | |
|             return NULL;
 | |
|         }
 | |
|         /* a directory, load its contents */
 | |
|         if ((next = get_next_file(include, dirctx)) != NULL)
 | |
|             *dirpath = include;
 | |
|         return next;
 | |
|     }
 | |
| 
 | |
|     next = BIO_new_file(include, "r");
 | |
|     return next;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * Get next file from the directory path.
 | |
|  * Returns BIO of the next file to read and updates dirctx.
 | |
|  */
 | |
| static BIO *get_next_file(const char *path, OPENSSL_DIR_CTX **dirctx)
 | |
| {
 | |
|     const char *filename;
 | |
|     size_t pathlen;
 | |
| 
 | |
|     pathlen = strlen(path);
 | |
|     while ((filename = OPENSSL_DIR_read(dirctx, path)) != NULL) {
 | |
|         size_t namelen;
 | |
| 
 | |
|         namelen = strlen(filename);
 | |
| 
 | |
| 
 | |
|         if ((namelen > 5 && strcasecmp(filename + namelen - 5, ".conf") == 0)
 | |
|             || (namelen > 4 && strcasecmp(filename + namelen - 4, ".cnf") == 0)) {
 | |
|             size_t newlen;
 | |
|             char *newpath;
 | |
|             BIO *bio;
 | |
| 
 | |
|             newlen = pathlen + namelen + 2;
 | |
|             newpath = OPENSSL_zalloc(newlen);
 | |
|             if (newpath == NULL) {
 | |
|                 CONFerr(CONF_F_GET_NEXT_FILE, ERR_R_MALLOC_FAILURE);
 | |
|                 break;
 | |
|             }
 | |
| #ifdef OPENSSL_SYS_VMS
 | |
|             /*
 | |
|              * If the given path isn't clear VMS syntax,
 | |
|              * we treat it as on Unix.
 | |
|              */
 | |
|             if (path[pathlen - 1] == ']'
 | |
|                 || path[pathlen - 1] == '>'
 | |
|                 || path[pathlen - 1] == ':') {
 | |
|                 /* Clear VMS directory syntax, just copy as is */
 | |
|                 OPENSSL_strlcpy(newpath, path, newlen);
 | |
|             }
 | |
| #endif
 | |
|             if (newpath[0] == '\0') {
 | |
|                 OPENSSL_strlcpy(newpath, path, newlen);
 | |
|                 OPENSSL_strlcat(newpath, "/", newlen);
 | |
|             }
 | |
|             OPENSSL_strlcat(newpath, filename, newlen);
 | |
| 
 | |
|             bio = BIO_new_file(newpath, "r");
 | |
|             OPENSSL_free(newpath);
 | |
|             /* Errors when opening files are non-fatal. */
 | |
|             if (bio != NULL)
 | |
|                 return bio;
 | |
|         }
 | |
|     }
 | |
|     OPENSSL_DIR_end(dirctx);
 | |
|     *dirctx = NULL;
 | |
|     return NULL;
 | |
| }
 | |
| #endif
 | |
| 
 | |
| static int is_keytype(const CONF *conf, char c, unsigned short type)
 | |
| {
 | |
|     const unsigned short * keytypes = (const unsigned short *) conf->meth_data;
 | |
|     unsigned char key = (unsigned char)c;
 | |
| 
 | |
| #ifdef CHARSET_EBCDIC
 | |
| # if CHAR_BIT > 8
 | |
|     if (key > 255) {
 | |
|         /* key is out of range for os_toascii table */
 | |
|         return 0;
 | |
|     }
 | |
| # endif
 | |
|     /* convert key from ebcdic to ascii */
 | |
|     key = os_toascii[key];
 | |
| #endif
 | |
| 
 | |
|     if (key > 127) {
 | |
|         /* key is not a seven bit ascii character */
 | |
|         return 0;
 | |
|     }
 | |
| 
 | |
|     return (keytypes[key] & type) ? 1 : 0;
 | |
| }
 | |
| 
 | |
| static char *eat_ws(CONF *conf, char *p)
 | |
| {
 | |
|     while (IS_WS(conf, *p) && (!IS_EOF(conf, *p)))
 | |
|         p++;
 | |
|     return p;
 | |
| }
 | |
| 
 | |
| static void trim_ws(CONF *conf, char *start)
 | |
| {
 | |
|     char *p = start;
 | |
| 
 | |
|     while (!IS_EOF(conf, *p))
 | |
|         p++;
 | |
|     p--;
 | |
|     while ((p >= start) && IS_WS(conf, *p))
 | |
|         p--;
 | |
|     p++;
 | |
|     *p = '\0';
 | |
| }
 | |
| 
 | |
| static char *eat_alpha_numeric(CONF *conf, char *p)
 | |
| {
 | |
|     for (;;) {
 | |
|         if (IS_ESC(conf, *p)) {
 | |
|             p = scan_esc(conf, p);
 | |
|             continue;
 | |
|         }
 | |
|         if (!IS_ALNUM_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';
 | |
| }
 |