+/*
+ * Copyright 1998-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * 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
+ */
+
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/objects.h>
#include <openssl/safestack.h>
#include <openssl/e_os2.h>
+#include "internal/thread_once.h"
#include "obj_lcl.h"
/*
- * Later versions of DEC C has started to add lnkage information to certain
- * functions, which makes it tricky to use them as values to regular function
- * pointers. One way is to define a macro that takes care of casting them
- * correctly.
+ * We define this wrapper for two reasons. Firstly, later versions of
+ * DEC C add linkage information to certain functions, which makes it
+ * tricky to use them as values to regular function pointers.
+ * Secondly, in the EDK2 build environment, the strcmp function is
+ * actually an external function (AsciiStrCmp) with the Microsoft ABI,
+ * so we can't transparently assign function pointers to it.
+ * Arguably the latter is a stupidity of the UEFI environment, but
+ * since the wrapper solves the DEC C issue too, let's just use the
+ * same solution.
*/
-#ifdef OPENSSL_SYS_VMS_DECC
-# define OPENSSL_strcmp (int (*)(const char *,const char *))strcmp
+#if defined(OPENSSL_SYS_VMS_DECC) || defined(OPENSSL_SYS_UEFI)
+static int obj_strcmp(const char *a, const char *b)
+{
+ return strcmp(a, b);
+}
#else
-# define OPENSSL_strcmp strcmp
+#define obj_strcmp strcmp
#endif
/*
*/
static LHASH_OF(OBJ_NAME) *names_lh = NULL;
static int names_type_num = OBJ_NAME_TYPE_NUM;
+static CRYPTO_RWLOCK *obj_lock = NULL;
struct name_funcs_st {
unsigned long (*hash_func) (const char *name);
static unsigned long obj_name_hash(const OBJ_NAME *a);
static int obj_name_cmp(const OBJ_NAME *a, const OBJ_NAME *b);
-int OBJ_NAME_init(void)
+static CRYPTO_ONCE init = CRYPTO_ONCE_STATIC_INIT;
+DEFINE_RUN_ONCE_STATIC(o_names_init)
{
- if (names_lh != NULL)
- return (1);
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
names_lh = lh_OBJ_NAME_new(obj_name_hash, obj_name_cmp);
+ obj_lock = CRYPTO_THREAD_lock_new();
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
- return (names_lh != NULL);
+ return names_lh != NULL && obj_lock != NULL;
+}
+
+int OBJ_NAME_init(void)
+{
+ return RUN_ONCE(&init, o_names_init);
}
int OBJ_NAME_new_index(unsigned long (*hash_func) (const char *),
int (*cmp_func) (const char *, const char *),
void (*free_func) (const char *, int, const char *))
{
- int ret;
- int i;
+ int ret = 0, i, push;
NAME_FUNCS *name_funcs;
+ if (!OBJ_NAME_init())
+ return 0;
+
+ CRYPTO_THREAD_write_lock(obj_lock);
+
if (name_funcs_stack == NULL) {
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
name_funcs_stack = sk_NAME_FUNCS_new_null();
}
if (name_funcs_stack == NULL) {
/* ERROR */
- return (0);
+ goto out;
}
ret = names_type_num;
names_type_num++;
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
if (name_funcs == NULL) {
OBJerr(OBJ_F_OBJ_NAME_NEW_INDEX, ERR_R_MALLOC_FAILURE);
- return (0);
+ ret = 0;
+ goto out;
}
- name_funcs->hash_func = lh_strhash;
- name_funcs->cmp_func = OPENSSL_strcmp;
+ name_funcs->hash_func = OPENSSL_LH_strhash;
+ name_funcs->cmp_func = obj_strcmp;
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
- sk_NAME_FUNCS_push(name_funcs_stack, name_funcs);
+
+ push = sk_NAME_FUNCS_push(name_funcs_stack, name_funcs);
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
+
+ if (!push) {
+ OBJerr(OBJ_F_OBJ_NAME_NEW_INDEX, ERR_R_MALLOC_FAILURE);
+ OPENSSL_free(name_funcs);
+ ret = 0;
+ goto out;
+ }
}
name_funcs = sk_NAME_FUNCS_value(name_funcs_stack, ret);
if (hash_func != NULL)
name_funcs->cmp_func = cmp_func;
if (free_func != NULL)
name_funcs->free_func = free_func;
- return (ret);
+
+out:
+ CRYPTO_THREAD_unlock(obj_lock);
+ return ret;
}
static int obj_name_cmp(const OBJ_NAME *a, const OBJ_NAME *b)
} else
ret = strcmp(a->name, b->name);
}
- return (ret);
+ return ret;
}
static unsigned long obj_name_hash(const OBJ_NAME *a)
sk_NAME_FUNCS_value(name_funcs_stack,
a->type)->hash_func(a->name);
} else {
- ret = lh_strhash(a->name);
+ ret = OPENSSL_LH_strhash(a->name);
}
ret ^= a->type;
- return (ret);
+ return ret;
}
const char *OBJ_NAME_get(const char *name, int type)
{
OBJ_NAME on, *ret;
int num = 0, alias;
+ const char *value = NULL;
if (name == NULL)
- return (NULL);
- if ((names_lh == NULL) && !OBJ_NAME_init())
- return (NULL);
+ return NULL;
+ if (!OBJ_NAME_init())
+ return NULL;
+ CRYPTO_THREAD_read_lock(obj_lock);
alias = type & OBJ_NAME_ALIAS;
type &= ~OBJ_NAME_ALIAS;
for (;;) {
ret = lh_OBJ_NAME_retrieve(names_lh, &on);
if (ret == NULL)
- return (NULL);
+ break;
if ((ret->alias) && !alias) {
if (++num > 10)
- return (NULL);
+ break;
on.name = ret->data;
} else {
- return (ret->data);
+ value = ret->data;
+ break;
}
}
+
+ CRYPTO_THREAD_unlock(obj_lock);
+ return value;
}
int OBJ_NAME_add(const char *name, int type, const char *data)
{
OBJ_NAME *onp, *ret;
- int alias;
+ int alias, ok = 0;
+
+ if (!OBJ_NAME_init())
+ return 0;
- if ((names_lh == NULL) && !OBJ_NAME_init())
- return (0);
+ CRYPTO_THREAD_write_lock(obj_lock);
alias = type & OBJ_NAME_ALIAS;
type &= ~OBJ_NAME_ALIAS;
onp = OPENSSL_malloc(sizeof(*onp));
if (onp == NULL) {
/* ERROR */
- return (0);
+ goto unlock;
}
onp->name = name;
} else {
if (lh_OBJ_NAME_error(names_lh)) {
/* ERROR */
- return (0);
+ OPENSSL_free(onp);
+ goto unlock;
}
}
- return (1);
+
+ ok = 1;
+
+unlock:
+ CRYPTO_THREAD_unlock(obj_lock);
+ return ok;
}
int OBJ_NAME_remove(const char *name, int type)
{
OBJ_NAME on, *ret;
+ int ok = 0;
- if (names_lh == NULL)
- return (0);
+ if (!OBJ_NAME_init())
+ return 0;
+
+ CRYPTO_THREAD_write_lock(obj_lock);
type &= ~OBJ_NAME_ALIAS;
on.name = name;
ret->data);
}
OPENSSL_free(ret);
- return (1);
- } else
- return (0);
+ ok = 1;
+ }
+
+ CRYPTO_THREAD_unlock(obj_lock);
+ return ok;
}
-struct doall {
+typedef struct {
int type;
void (*fn) (const OBJ_NAME *, void *arg);
void *arg;
-};
+} OBJ_DOALL;
-static void do_all_fn_doall_arg(const OBJ_NAME *name, struct doall *d)
+static void do_all_fn(const OBJ_NAME *name, OBJ_DOALL *d)
{
if (name->type == d->type)
d->fn(name, d->arg);
}
-static IMPLEMENT_LHASH_DOALL_ARG_FN(do_all_fn, const OBJ_NAME, struct doall)
+IMPLEMENT_LHASH_DOALL_ARG_CONST(OBJ_NAME, OBJ_DOALL);
void OBJ_NAME_do_all(int type, void (*fn) (const OBJ_NAME *, void *arg),
void *arg)
{
- struct doall d;
+ OBJ_DOALL d;
d.type = type;
d.fn = fn;
d.arg = arg;
- lh_OBJ_NAME_doall_arg(names_lh, LHASH_DOALL_ARG_FN(do_all_fn),
- struct doall, &d);
+ lh_OBJ_NAME_doall_OBJ_DOALL(names_lh, do_all_fn, &d);
}
struct doall_sorted {
if (type < 0) {
lh_OBJ_NAME_free(names_lh);
sk_NAME_FUNCS_pop_free(name_funcs_stack, name_funcs_free);
+ CRYPTO_THREAD_lock_free(obj_lock);
names_lh = NULL;
name_funcs_stack = NULL;
+ obj_lock = NULL;
} else
lh_OBJ_NAME_set_down_load(names_lh, down_load);
}
projects / thirdparty / openssl.git / blobdiff