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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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#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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#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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 * 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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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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static CONF *def_create(CONF_METHOD *meth);
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static int def_init_default(CONF *conf);
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static int def_init_WIN32(CONF *conf);
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static int def_destroy(CONF *conf);
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static int def_destroy_data(CONF *conf);
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static int def_load(CONF *conf, const char *name, long *eline);
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static int def_load_bio(CONF *conf, BIO *bp, long *eline);
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static int def_dump(const CONF *conf, BIO *bp);
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static int def_is_number(const CONF *conf, char c);
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static int def_to_int(const CONF *conf, char c);
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static CONF_METHOD default_method = {
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    "OpenSSL default",
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    def_create,
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    def_init_default,
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    def_destroy,
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    def_destroy_data,
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    def_load_bio,
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    def_dump,
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    def_is_number,
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    def_to_int,
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    def_load
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};
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static CONF_METHOD WIN32_method = {
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    "WIN32",
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    def_create,
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    def_init_WIN32,
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    def_destroy,
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    def_destroy_data,
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    def_load_bio,
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    def_dump,
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    def_is_number,
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    def_to_int,
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    def_load
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};
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CONF_METHOD *NCONF_default(void)
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{
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    return &default_method;
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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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static CONF *def_create(CONF_METHOD *meth)
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{
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    CONF *ret;
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    ret = OPENSSL_malloc(sizeof(*ret));
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    if (ret != NULL)
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        if (meth->init(ret) == 0) {
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            OPENSSL_free(ret);
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            ret = NULL;
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        }
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    return ret;
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}
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static int def_init_default(CONF *conf)
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{
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    if (conf == NULL)
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        return 0;
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    conf->meth = &default_method;
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    conf->meth_data = (void *)CONF_type_default;
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    conf->data = NULL;
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    return 1;
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}
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static int def_init_WIN32(CONF *conf)
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{
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    if (conf == NULL)
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        return 0;
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    conf->meth = &WIN32_method;
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    conf->meth_data = (void *)CONF_type_win32;
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    conf->data = NULL;
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    return 1;
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}
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static int def_destroy(CONF *conf)
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{
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    if (def_destroy_data(conf)) {
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        OPENSSL_free(conf);
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        return 1;
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    }
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    return 0;
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}
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static int def_destroy_data(CONF *conf)
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{
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    if (conf == NULL)
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        return 0;
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    _CONF_free_data(conf);
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    return 1;
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}
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static int def_load(CONF *conf, const char *name, long *line)
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{
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    int ret;
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    BIO *in = NULL;
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#ifdef OPENSSL_SYS_VMS
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    in = BIO_new_file(name, "r");
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#else
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    in = BIO_new_file(name, "rb");
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#endif
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    if (in == NULL) {
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        if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE)
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            CONFerr(CONF_F_DEF_LOAD, CONF_R_NO_SUCH_FILE);
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        else
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            CONFerr(CONF_F_DEF_LOAD, ERR_R_SYS_LIB);
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        return 0;
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    }
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    ret = def_load_bio(conf, in, line);
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    BIO_free(in);
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    return ret;
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}
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static int def_load_bio(CONF *conf, BIO *in, long *line)
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{
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/* The macro BUFSIZE conflicts with a system macro in VxWorks */
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#define CONFBUFSIZE     512
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    int bufnum = 0, i, ii;
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    BUF_MEM *buff = NULL;
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    char *s, *p, *end;
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    int again;
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    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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    if ((buff = BUF_MEM_new()) == NULL) {
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        CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
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        goto err;
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    }
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    section = OPENSSL_strdup("default");
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    if (section == NULL) {
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        CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
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        goto err;
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    }
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    if (_CONF_new_data(conf) == 0) {
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        CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
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        goto err;
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    }
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    sv = _CONF_new_section(conf, section);
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    if (sv == NULL) {
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        CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
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        goto err;
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    }
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    bufnum = 0;
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    again = 0;
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    for (;;) {
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        if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) {
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            CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
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            goto err;
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        }
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        p = &(buff->data[bufnum]);
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        *p = '\0';
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 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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            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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#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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                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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        v = NULL;
 | 
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        /* check for line continuation */
 | 
						|
        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--;
 | 
						|
                again = 1;
 | 
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            }
 | 
						|
        }
 | 
						|
        if (again)
 | 
						|
            continue;
 | 
						|
        bufnum = 0;
 | 
						|
        buf = buff->data;
 | 
						|
 | 
						|
        clear_comments(conf, buf);
 | 
						|
        s = eat_ws(conf, buf);
 | 
						|
        if (IS_EOF(conf, *s))
 | 
						|
            continue;           /* blank line */
 | 
						|
        if (*s == '[') {
 | 
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            char *ss;
 | 
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 | 
						|
            s++;
 | 
						|
            start = eat_ws(conf, s);
 | 
						|
            ss = start;
 | 
						|
 again:
 | 
						|
            end = eat_alpha_numeric(conf, ss);
 | 
						|
            p = eat_ws(conf, end);
 | 
						|
            if (*p != ']') {
 | 
						|
                if (*p != '\0' && ss != p) {
 | 
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                    ss = p;
 | 
						|
                    goto again;
 | 
						|
                }
 | 
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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;
 | 
						|
            }
 | 
						|
            *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 {
 | 
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                psection = section;
 | 
						|
            }
 | 
						|
            p = eat_ws(conf, end);
 | 
						|
            if (strncmp(pname, ".include", 8) == 0
 | 
						|
                && (p != pname + 8 || *p == '=')) {
 | 
						|
                char *include = NULL;
 | 
						|
                BIO *next;
 | 
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 | 
						|
                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';
 | 
						|
}
 |