/*
- * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * 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
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
#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>
+#ifndef OPENSSL_NO_POSIX_IO
+# include <sys/stat.h>
+# ifdef _WIN32
+# define stat _stat
+# 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
*/
#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);
+#ifndef OPENSSL_NO_DEPRECATED_3_0
static int def_init_WIN32(CONF *conf);
+#endif
static int def_destroy(CONF *conf);
static int def_destroy_data(CONF *conf);
static int def_load(CONF *conf, const char *name, long *eline);
def_load
};
+CONF_METHOD *NCONF_default(void)
+{
+ return &default_method;
+}
+
+#ifndef OPENSSL_NO_DEPRECATED_3_0
static CONF_METHOD WIN32_method = {
"WIN32",
def_create,
def_load
};
-CONF_METHOD *NCONF_default()
-{
- return &default_method;
-}
-
-CONF_METHOD *NCONF_WIN32()
+CONF_METHOD *NCONF_WIN32(void)
{
return &WIN32_method;
}
+#endif
static CONF *def_create(CONF_METHOD *meth)
{
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;
}
+#ifndef OPENSSL_NO_DEPRECATED_3_0
static int def_init_WIN32(CONF *conf)
{
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
static int def_destroy(CONF *conf)
{
#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 *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
+#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';
- BIO_gets(in, p, CONFBUFSIZE - 1);
+ read_retry:
+ if (in != NULL && BIO_gets(in, p, CONFBUFSIZE - 1) < 0)
+ goto err;
p[CONFBUFSIZE - 1] = '\0';
ii = i = strlen(p);
- if (i == 0 && !again)
- break;
+ 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 NULL or 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'))
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;
} 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 != '=') {
- CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_MISSING_EQUAL_SIGN);
+ if (CHECK_AND_SKIP_PREFIX(pname, ".pragma")
+ && (p != pname || *p == '=')) {
+ char *pval;
+
+ if (*p == '=') {
+ p++;
+ p = eat_ws(conf, p);
+ }
+ trim_ws(conf, p);
+
+ /* Pragma values take the form keyword:value */
+ pval = strchr(p, ':');
+ if (pval == NULL || pval == p || pval[1] == '\0') {
+ ERR_raise(ERR_LIB_CONF, CONF_R_INVALID_PRAGMA);
+ goto err;
+ }
+
+ *pval++ = '\0';
+ trim_ws(conf, p);
+ pval = eat_ws(conf, pval);
+
+ /*
+ * 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 (!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 (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);
+ }
+ trim_ws(conf, p);
+ if (!str_copy(conf, psection, &include, p))
+ goto err;
+
+ 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);
+ 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_path);
+ }
+#else
+ next = BIO_new_file(include_path, "r");
+ 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) {
+ 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_CRYPTO_LIB);
+ BIO_free(next);
+ goto err;
+ }
+ /* continue with reading from the included BIO */
+ in = next;
+ }
+ continue;
+ } else if (*p != '=') {
+ ERR_raise_data(ERR_LIB_CONF, CONF_R_MISSING_EQUAL_SIGN,
+ "HERE-->%s", p);
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);
+ if ((v = OPENSSL_malloc(sizeof(*v))) == NULL)
goto err;
- }
- if (psection == NULL)
- psection = section;
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;
}
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);
buf->data[to++] = v;
} else if (IS_EOF(conf, *from))
break;
- else if (*from == '$') {
+ else if (*from == '$'
+ && (!conf->flag_dollarid
+ || from[1] == '{'
+ || from[1] == '(')) {
size_t newsize;
/* try to expand it */
s++;
cp = section;
e = np = s;
- while (IS_ALPHA_NUMERIC(conf, *e))
+ while (IS_ALNUM(conf, *e)
+ || (conf->flag_dollarid && IS_DOLLAR(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)
+ || (conf->flag_dollarid && IS_DOLLAR(conf, *e)))
e++;
}
r = *e;
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)
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;
+ BIO *next;
+
+ if (stat(include, &st) < 0) {
+ 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) {
+ ERR_raise_data(ERR_LIB_CONF, CONF_R_RECURSIVE_DIRECTORY_INCLUDE,
+ "%s", 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
+ && 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)
+ 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)))
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 (;;) {
p = scan_esc(conf, p);
continue;
}
- if (!IS_ALPHA_NUMERIC_PUNCT(conf, *p))
+ if (!(IS_ALNUM_PUNCT(conf, *p)
+ || (conf->flag_dollarid && IS_DOLLAR(conf, *p))))
return p;
p++;
}
projects / openssl.git / blobdiff