/*
- * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
#include <stdio.h>
#include <string.h>
+#include "internal/e_os.h" /* struct stat */
#ifdef __TANDEM
-# include <strings.h> /* strcasecmp */
# include <sys/types.h> /* needed for stat.h */
# include <sys/stat.h> /* struct stat */
#endif
#include <openssl/lhash.h>
#include <openssl/conf.h>
#include <openssl/conf_api.h>
+#include "conf_local.h"
#include "conf_def.h"
#include <openssl/buffer.h>
#include <openssl/err.h>
# include <sys/stat.h>
# ifdef _WIN32
# define stat _stat
-# define strcasecmp _stricmp
# endif
#endif
return ret;
}
+
+/* Parse a boolean value and fill in *flag. Return 0 on error. */
+static int parsebool(const char *pval, int *flag)
+{
+ if (OPENSSL_strcasecmp(pval, "on") == 0
+ || OPENSSL_strcasecmp(pval, "true") == 0) {
+ *flag = 1;
+ } else if (OPENSSL_strcasecmp(pval, "off") == 0
+ || OPENSSL_strcasecmp(pval, "false") == 0) {
+ *flag = 0;
+ } else {
+ ERR_raise(ERR_LIB_CONF, CONF_R_INVALID_PRAGMA);
+ return 0;
+ }
+ return 1;
+}
+
static int def_load_bio(CONF *conf, BIO *in, long *line)
{
/* The macro BUFSIZE conflicts with a system macro in VxWorks */
char *dirpath = NULL;
OPENSSL_DIR_CTX *dirctx = NULL;
#endif
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+ int numincludes = 0;
+#endif
if ((buff = BUF_MEM_new()) == NULL) {
ERR_raise(ERR_LIB_CONF, ERR_R_BUF_LIB);
}
section = OPENSSL_strdup("default");
- if (section == NULL) {
- ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE);
+ if (section == NULL)
goto err;
- }
if (_CONF_new_data(conf) == 0) {
- ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_CONF, ERR_R_CONF_LIB);
goto err;
}
psection = section;
}
p = eat_ws(conf, end);
- if (strncmp(pname, ".pragma", 7) == 0
- && (p != pname + 7 || *p == '=')) {
+ if (CHECK_AND_SKIP_PREFIX(pname, ".pragma")
+ && (p != pname || *p == '=')) {
char *pval;
if (*p == '=') {
* Known pragmas:
*
* dollarid takes "on", "true or "off", "false"
+ * abspath takes "on", "true or "off", "false"
+ * includedir directory prefix
*/
if (strcmp(p, "dollarid") == 0) {
- if (strcmp(pval, "on") == 0
- || strcmp(pval, "true") == 0) {
- conf->flag_dollarid = 1;
- } else if (strcmp(pval, "off") == 0
- || strcmp(pval, "false") == 0) {
- conf->flag_dollarid = 0;
- } else {
- ERR_raise(ERR_LIB_CONF, CONF_R_INVALID_PRAGMA);
+ if (!parsebool(pval, &conf->flag_dollarid))
+ goto err;
+ } else if (strcmp(p, "abspath") == 0) {
+ if (!parsebool(pval, &conf->flag_abspath))
+ goto err;
+ } else if (strcmp(p, "includedir") == 0) {
+ OPENSSL_free(conf->includedir);
+ if ((conf->includedir = OPENSSL_strdup(pval)) == NULL)
goto err;
- }
}
+
/*
* We *ignore* any unknown pragma.
*/
continue;
- } else if (strncmp(pname, ".include", 8) == 0
- && (p != pname + 8 || *p == '=')) {
+ } else if (CHECK_AND_SKIP_PREFIX(pname, ".include")
+ && (p != pname || *p == '=')) {
char *include = NULL;
BIO *next;
const char *include_dir = ossl_safe_getenv("OPENSSL_CONF_INCLUDE");
char *include_path = NULL;
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+ /*
+ * The include processing below can cause the "conf" fuzzer to
+ * timeout due to the fuzzer inserting large and complicated
+ * includes - with a large amount of time spent in
+ * OPENSSL_strlcat/OPENSSL_strcpy. This is not a security
+ * concern because config files should never come from untrusted
+ * sources. We just set an arbitrary limit on the allowed
+ * number of includes when fuzzing to prevent this timeout.
+ */
+ if (numincludes++ > 10)
+ goto err;
+#endif
+
+ if (include_dir == NULL)
+ include_dir = conf->includedir;
+
if (*p == '=') {
p++;
p = eat_ws(conf, p);
include_path = OPENSSL_malloc(newlen);
if (include_path == NULL) {
- ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE);
OPENSSL_free(include);
goto err;
}
include_path = include;
}
+ if (conf->flag_abspath
+ && !ossl_is_absolute_path(include_path)) {
+ ERR_raise(ERR_LIB_CONF, CONF_R_RELATIVE_PATH);
+ OPENSSL_free(include_path);
+ goto err;
+ }
+
/* get the BIO of the included file */
#ifndef OPENSSL_NO_POSIX_IO
next = process_include(include_path, &dirctx, &dirpath);
/* push the currently processing BIO onto stack */
if (biosk == NULL) {
if ((biosk = sk_BIO_new_null()) == NULL) {
- ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_CONF, ERR_R_CRYPTO_LIB);
BIO_free(next);
goto err;
}
}
if (!sk_BIO_push(biosk, in)) {
- ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_CONF, ERR_R_CRYPTO_LIB);
BIO_free(next);
goto err;
}
start = eat_ws(conf, p);
trim_ws(conf, start);
- if ((v = OPENSSL_malloc(sizeof(*v))) == NULL) {
- ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE);
+ if ((v = OPENSSL_malloc(sizeof(*v))) == NULL)
goto err;
- }
v->name = OPENSSL_strdup(pname);
v->value = NULL;
- if (v->name == NULL) {
- ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE);
+ if (v->name == NULL)
goto err;
- }
if (!str_copy(conf, psection, &(v->value), start))
goto err;
} else
tv = sv;
if (_CONF_add_string(conf, tv, v) == 0) {
- ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_CONF, ERR_R_CONF_LIB);
goto err;
}
v = NULL;
*/
sk_BIO_free(biosk);
return 1;
+
err:
BUF_MEM_free(buff);
OPENSSL_free(section);
goto err;
}
if (!BUF_MEM_grow_clean(buf, newsize)) {
- ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_CONF, ERR_R_BUF_LIB);
goto err;
}
while (*p)
namelen = strlen(filename);
- if ((namelen > 5 && strcasecmp(filename + namelen - 5, ".conf") == 0)
- || (namelen > 4 && strcasecmp(filename + namelen - 4, ".cnf") == 0)) {
+ if ((namelen > 5
+ && OPENSSL_strcasecmp(filename + namelen - 5, ".conf") == 0)
+ || (namelen > 4
+ && OPENSSL_strcasecmp(filename + namelen - 4, ".cnf") == 0)) {
size_t newlen;
char *newpath;
BIO *bio;
newlen = pathlen + namelen + 2;
newpath = OPENSSL_zalloc(newlen);
- if (newpath == NULL) {
- ERR_raise(ERR_LIB_CONF, ERR_R_MALLOC_FAILURE);
+ if (newpath == NULL)
break;
- }
#ifdef OPENSSL_SYS_VMS
/*
* If the given path isn't clear VMS syntax,
static int is_keytype(const CONF *conf, char c, unsigned short type)
{
- const unsigned short * keytypes = (const unsigned short *) conf->meth_data;
+ const unsigned short *keytypes = (const unsigned short *) conf->meth_data;
unsigned char key = (unsigned char)c;
#ifdef CHARSET_EBCDIC
projects / openssl.git / blobdiff