/*
- * Copyright 1995-2018 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 <sys/types.h> /* needed for stat.h */
+# include <sys/stat.h> /* struct stat */
+#endif
#include "internal/cryptlib.h"
#include "internal/o_dir.h"
#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
if (conf == NULL)
return 0;
+ memset(conf, 0, sizeof(*conf));
conf->meth = &default_method;
conf->meth_data = (void *)CONF_type_default;
- conf->data = NULL;
return 1;
}
if (conf == NULL)
return 0;
+ memset(conf, 0, sizeof(*conf));
conf->meth = &WIN32_method;
conf->meth_data = (void *)CONF_type_win32;
- conf->data = NULL;
return 1;
}
#endif
if (in == NULL) {
if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE)
- CONFerr(CONF_F_DEF_LOAD, CONF_R_NO_SUCH_FILE);
+ ERR_raise(ERR_LIB_CONF, CONF_R_NO_SUCH_FILE);
else
- CONFerr(CONF_F_DEF_LOAD, ERR_R_SYS_LIB);
+ ERR_raise(ERR_LIB_CONF, ERR_R_SYS_LIB);
return 0;
}
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 */
BUF_MEM *buff = NULL;
char *s, *p, *end;
int again;
+ int first_call = 1;
long eline = 0;
char btmp[DECIMAL_SIZE(eline) + 1];
CONF_VALUE *v = NULL, *tv;
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) {
- CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
+ ERR_raise(ERR_LIB_CONF, ERR_R_BUF_LIB);
goto err;
}
section = OPENSSL_strdup("default");
- if (section == NULL) {
- CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
+ if (section == NULL)
goto err;
- }
if (_CONF_new_data(conf) == 0) {
- CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_CONF, ERR_R_CONF_LIB);
goto err;
}
sv = _CONF_new_section(conf, section);
if (sv == NULL) {
- CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+ ERR_raise(ERR_LIB_CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
goto err;
}
again = 0;
for (;;) {
if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) {
- CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
+ ERR_raise(ERR_LIB_CONF, ERR_R_BUF_LIB);
goto err;
}
p = &(buff->data[bufnum]);
*p = '\0';
read_retry:
- BIO_gets(in, p, CONFBUFSIZE - 1);
+ if (in != NULL && BIO_gets(in, p, CONFBUFSIZE - 1) < 0)
+ goto err;
p[CONFBUFSIZE - 1] = '\0';
ii = i = strlen(p);
+ if (first_call) {
+ /* Other BOMs imply unsupported multibyte encoding,
+ * so don't strip them and let the error raise */
+ const unsigned char utf8_bom[3] = {0xEF, 0xBB, 0xBF};
+
+ if (i >= 3 && memcmp(p, utf8_bom, 3) == 0) {
+ memmove(p, p + 3, i - 3);
+ p[i - 3] = 0;
+ i -= 3;
+ ii -= 3;
+ }
+ first_call = 0;
+ }
if (i == 0 && !again) {
- /* the currently processed BIO is at EOF */
+ /* the currently processed BIO is NULL or at EOF */
BIO *parent;
#ifndef OPENSSL_NO_POSIX_IO
ss = p;
goto again;
}
- CONFerr(CONF_F_DEF_LOAD_BIO,
- CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
+ ERR_raise(ERR_LIB_CONF, CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
goto err;
}
*end = '\0';
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);
+ ERR_raise(ERR_LIB_CONF, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
goto err;
}
continue;
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 == '=') {
/* Pragma values take the form keyword:value */
pval = strchr(p, ':');
if (pval == NULL || pval == p || pval[1] == '\0') {
- CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_INVALID_PRAGMA);
+ ERR_raise(ERR_LIB_CONF, CONF_R_INVALID_PRAGMA);
goto err;
}
* 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 {
- CONFerr(CONF_F_DEF_LOAD_BIO, 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);
if (!str_copy(conf, psection, &include, p))
goto err;
- if (include_dir != NULL) {
+ if (include_dir != NULL && !ossl_is_absolute_path(include)) {
size_t newlen = strlen(include_dir) + strlen(include) + 2;
include_path = OPENSSL_malloc(newlen);
+ if (include_path == NULL) {
+ OPENSSL_free(include);
+ goto err;
+ }
+
OPENSSL_strlcpy(include_path, include_dir, newlen);
- OPENSSL_strlcat(include_path, "/", newlen);
+ if (!ossl_ends_with_dirsep(include_path))
+ OPENSSL_strlcat(include_path, "/", newlen);
OPENSSL_strlcat(include_path, include, newlen);
+ OPENSSL_free(include);
} else {
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);
if (include_path != dirpath) {
/* dirpath will contain include in case of a directory */
- OPENSSL_free(include);
- if (include_path != include)
- OPENSSL_free(include_path);
+ OPENSSL_free(include_path);
}
#else
next = BIO_new_file(include_path, "r");
- OPENSSL_free(include);
- if (include_path != include)
- OPENSSL_free(include_path);
+ OPENSSL_free(include_path);
#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);
+ ERR_raise(ERR_LIB_CONF, ERR_R_CRYPTO_LIB);
+ BIO_free(next);
goto err;
}
}
if (!sk_BIO_push(biosk, in)) {
- CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_CONF, ERR_R_CRYPTO_LIB);
+ BIO_free(next);
goto err;
}
/* continue with reading from the included BIO */
}
continue;
} else if (*p != '=') {
- CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_MISSING_EQUAL_SIGN);
- ERR_add_error_data(2, "HERE-->", p);
+ ERR_raise_data(ERR_LIB_CONF, CONF_R_MISSING_EQUAL_SIGN,
+ "HERE-->%s", p);
goto err;
}
*end = '\0';
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);
+ if ((v = OPENSSL_malloc(sizeof(*v))) == NULL)
goto err;
- }
v->name = OPENSSL_strdup(pname);
v->value = NULL;
- if (v->name == NULL) {
- CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
+ if (v->name == NULL)
goto err;
- }
if (!str_copy(conf, psection, &(v->value), start))
goto err;
== NULL)
tv = _CONF_new_section(conf, psection);
if (tv == NULL) {
- CONFerr(CONF_F_DEF_LOAD_BIO,
- CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+ ERR_raise(ERR_LIB_CONF,
+ 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);
+ 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);
rp = e;
if (q) {
if (r != q) {
- CONFerr(CONF_F_STR_COPY, CONF_R_NO_CLOSE_BRACE);
+ ERR_raise(ERR_LIB_CONF, CONF_R_NO_CLOSE_BRACE);
goto err;
}
e++;
*rrp = rr;
*rp = r;
if (p == NULL) {
- CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_HAS_NO_VALUE);
+ ERR_raise(ERR_LIB_CONF, 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);
+ ERR_raise(ERR_LIB_CONF, CONF_R_VARIABLE_EXPANSION_TOO_LONG);
goto err;
}
if (!BUF_MEM_grow_clean(buf, newsize)) {
- CONFerr(CONF_F_STR_COPY, ERR_R_MALLOC_FAILURE);
+ ERR_raise(ERR_LIB_CONF, ERR_R_BUF_LIB);
goto err;
}
while (*p)
BIO *next;
if (stat(include, &st) < 0) {
- ERR_raise_data(ERR_LIB_SYS, errno,
- "calling stat(%s)",
- include);
+ ERR_raise_data(ERR_LIB_SYS, errno, "calling stat(%s)", 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);
+ ERR_raise_data(ERR_LIB_CONF, CONF_R_RECURSIVE_DIRECTORY_INCLUDE,
+ "%s", include);
return NULL;
}
/* a directory, load its contents */
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) {
- CONFerr(CONF_F_GET_NEXT_FILE, 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
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