-/* crypto/conf/conf.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
*
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
/* Part of the code in here was originally in conf.c, which is now removed */
#include <stdio.h>
#include <string.h>
-#include "cryptlib.h"
-#include <openssl/stack.h>
+#include "internal/cryptlib.h"
+#include "internal/o_dir.h"
#include <openssl/lhash.h>
#include <openssl/conf.h>
#include <openssl/conf_api.h>
#include "conf_def.h"
#include <openssl/buffer.h>
#include <openssl/err.h>
+#ifndef OPENSSL_NO_POSIX_IO
+# include <sys/stat.h>
+# ifdef _WIN32
+# define stat _stat
+# define strcasecmp _stricmp
+# endif
+#endif
+#ifndef S_ISDIR
+# define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR)
+#endif
+
+/*
+ * The maximum length we can grow a value to after variable expansion. 64k
+ * should be more than enough for all reasonable uses.
+ */
+#define MAX_CONF_VALUE_LENGTH 65536
+
+static int is_keytype(const CONF *conf, char c, unsigned short type);
static char *eat_ws(CONF *conf, char *p);
+static void trim_ws(CONF *conf, char *start);
static char *eat_alpha_numeric(CONF *conf, char *p);
static void clear_comments(CONF *conf, char *p);
static int str_copy(CONF *conf, char *section, char **to, char *from);
static char *scan_quote(CONF *conf, char *p);
static char *scan_dquote(CONF *conf, char *p);
#define scan_esc(conf,p) (((IS_EOF((conf),(p)[1]))?((p)+1):((p)+2)))
+#ifndef OPENSSL_NO_POSIX_IO
+static BIO *process_include(char *include, OPENSSL_DIR_CTX **dirctx,
+ char **dirpath);
+static BIO *get_next_file(const char *path, OPENSSL_DIR_CTX **dirctx);
+#endif
static CONF *def_create(CONF_METHOD *meth);
static int def_init_default(CONF *conf);
static int def_is_number(const CONF *conf, char c);
static int def_to_int(const CONF *conf, char c);
-const char CONF_def_version[] = "CONF_def" OPENSSL_VERSION_PTEXT;
-
static CONF_METHOD default_method = {
"OpenSSL default",
def_create,
def_load
};
-CONF_METHOD *NCONF_default()
+CONF_METHOD *NCONF_default(void)
{
return &default_method;
}
-CONF_METHOD *NCONF_WIN32()
+CONF_METHOD *NCONF_WIN32(void)
{
return &WIN32_method;
}
CONF *ret;
ret = OPENSSL_malloc(sizeof(*ret));
- if (ret)
+ if (ret != NULL)
if (meth->init(ret) == 0) {
OPENSSL_free(ret);
ret = NULL;
char *section = NULL, *buf;
char *start, *psection, *pname;
void *h = (void *)(conf->data);
+ STACK_OF(BIO) *biosk = NULL;
+#ifndef OPENSSL_NO_POSIX_IO
+ char *dirpath = NULL;
+ OPENSSL_DIR_CTX *dirctx = NULL;
+#endif
if ((buff = BUF_MEM_new()) == NULL) {
CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
goto err;
}
- section = OPENSSL_malloc(10);
+ section = OPENSSL_strdup("default");
if (section == NULL) {
CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
goto err;
}
- BUF_strlcpy(section, "default", 10);
if (_CONF_new_data(conf) == 0) {
CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
}
p = &(buff->data[bufnum]);
*p = '\0';
+ read_retry:
BIO_gets(in, p, CONFBUFSIZE - 1);
p[CONFBUFSIZE - 1] = '\0';
ii = i = strlen(p);
- if (i == 0 && !again)
- break;
+ if (i == 0 && !again) {
+ /* the currently processed BIO is at EOF */
+ BIO *parent;
+
+#ifndef OPENSSL_NO_POSIX_IO
+ /* continue processing with the next file from directory */
+ if (dirctx != NULL) {
+ BIO *next;
+
+ if ((next = get_next_file(dirpath, &dirctx)) != NULL) {
+ BIO_vfree(in);
+ in = next;
+ goto read_retry;
+ } else {
+ OPENSSL_free(dirpath);
+ dirpath = NULL;
+ }
+ }
+#endif
+ /* no more files in directory, continue with processing parent */
+ if ((parent = sk_BIO_pop(biosk)) == NULL) {
+ /* everything processed get out of the loop */
+ break;
+ } else {
+ BIO_vfree(in);
+ in = parent;
+ goto read_retry;
+ }
+ }
again = 0;
while (i > 0) {
if ((p[i - 1] != '\r') && (p[i - 1] != '\n'))
continue;
} else {
pname = s;
- psection = NULL;
end = eat_alpha_numeric(conf, s);
if ((end[0] == ':') && (end[1] == ':')) {
*end = '\0';
psection = pname;
pname = end;
end = eat_alpha_numeric(conf, end);
+ } else {
+ psection = section;
}
p = eat_ws(conf, end);
- if (*p != '=') {
+ 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);
+ goto err;
+ }
+ }
+ if (!sk_BIO_push(biosk, in)) {
+ CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
+ 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);
- while (!IS_EOF(conf, *p))
- p++;
- p--;
- while ((p != start) && (IS_WS(conf, *p)))
- p--;
- p++;
- *p = '\0';
+ trim_ws(conf, start);
if ((v = OPENSSL_malloc(sizeof(*v))) == NULL) {
CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
goto err;
}
- if (psection == NULL)
- psection = section;
- v->name = OPENSSL_malloc(strlen(pname) + 1);
+ v->name = OPENSSL_strdup(pname);
v->value = NULL;
if (v->name == NULL) {
CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
goto err;
}
- BUF_strlcpy(v->name, pname, strlen(pname) + 1);
if (!str_copy(conf, psection, &(v->value), start))
goto err;
}
BUF_MEM_free(buff);
OPENSSL_free(section);
- return (1);
+ /*
+ * 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);
+ BIO_snprintf(btmp, sizeof(btmp), "%ld", eline);
ERR_add_error_data(2, "line ", btmp);
if (h != conf->data) {
CONF_free(conf->data);
OPENSSL_free(v->value);
OPENSSL_free(v);
}
- return (0);
+ return 0;
}
static void clear_comments(CONF *conf, char *p)
BUF_MEM *buf;
if ((buf = BUF_MEM_new()) == NULL)
- return (0);
+ return 0;
len = strlen(from) + 1;
if (!BUF_MEM_grow(buf, len))
} else if (IS_EOF(conf, *from))
break;
else if (*from == '$') {
+ size_t newsize;
+
/* try to expand it */
rrp = NULL;
s = &(from[1]);
s++;
cp = section;
e = np = s;
- while (IS_ALPHA_NUMERIC(conf, *e))
+ while (IS_ALNUM(conf, *e))
e++;
if ((e[0] == ':') && (e[1] == ':')) {
cp = np;
*rrp = '\0';
e += 2;
np = e;
- while (IS_ALPHA_NUMERIC(conf, *e))
+ while (IS_ALNUM(conf, *e))
e++;
}
r = *e;
CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_HAS_NO_VALUE);
goto err;
}
- if (!BUF_MEM_grow_clean(buf,
- (strlen(p) + buf->length - (e - from)))) {
+ 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;
}
OPENSSL_free(*pto);
*pto = buf->data;
OPENSSL_free(buf);
- return (1);
+ return 1;
err:
BUF_MEM_free(buf);
- return (0);
+ 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;
+
+ 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 = strlen(path) + 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.
+ */
+ {
+ size_t pathlen = strlen(path);
+
+ 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);
+ 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)
p = scan_esc(conf, p);
continue;
}
- if (!IS_ALPHA_NUMERIC_PUNCT(conf, *p))
- return (p);
+ if (!IS_ALNUM_PUNCT(conf, *p))
+ return p;
p++;
}
}
if (IS_ESC(conf, *p)) {
p++;
if (IS_EOF(conf, *p))
- return (p);
+ return p;
}
p++;
}
if (*p == q)
p++;
- return (p);
+ return p;
}
static char *scan_dquote(CONF *conf, char *p)
}
if (*p == q)
p++;
- return (p);
+ return p;
}
-static void dump_value_doall_arg(CONF_VALUE *a, BIO *out)
+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);
BIO_printf(out, "[[%s]]\n", a->section);
}
-static IMPLEMENT_LHASH_DOALL_ARG_FN(dump_value, CONF_VALUE, BIO)
+IMPLEMENT_LHASH_DOALL_ARG_CONST(CONF_VALUE, BIO);
static int def_dump(const CONF *conf, BIO *out)
{
- lh_CONF_VALUE_doall_arg(conf->data, LHASH_DOALL_ARG_FN(dump_value),
- BIO, out);
+ lh_CONF_VALUE_doall_BIO(conf->data, dump_value_doall_arg, out);
return 1;
}
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