#include <stdarg.h>
#include <string.h>
#include <internal/cryptlib_int.h>
+#include <internal/threads.h>
#include <openssl/lhash.h>
#include <openssl/crypto.h>
#include <openssl/buffer.h>
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/opensslconf.h>
-#include "err_lcl.h"
static void err_load_strings(int lib, ERR_STRING_DATA *str);
};
#endif
+static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT;
+static CRYPTO_THREAD_LOCAL err_thread_local;
+
/* Predeclarations of the "err_defaults" functions */
static LHASH_OF(ERR_STRING_DATA) *get_hash(int create, int lockit);
static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
-static LHASH_OF(ERR_STATE) *int_thread_get(int create, int lockit);
-static void int_thread_release(LHASH_OF(ERR_STATE) **hash);
-static ERR_STATE *int_thread_get_item(const ERR_STATE *);
-static ERR_STATE *int_thread_set_item(ERR_STATE *);
-static void int_thread_del_item(const ERR_STATE *);
/*
* The internal state
*/
-/* This is a struct so that REF_PRINT_COUNT works. */
-static struct refcount {
- int references;
-} refcount = { 0 };
static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
-static LHASH_OF(ERR_STATE) *int_thread_hash = NULL;
static int int_err_library_number = ERR_LIB_USER;
static unsigned long get_error_values(int inc, int top, const char **file,
return p;
}
-static unsigned long err_state_hash(const ERR_STATE *a)
-{
- return CRYPTO_THREADID_hash(&a->tid) * 13;
-}
-
-static int err_state_cmp(const ERR_STATE *a, const ERR_STATE *b)
-{
- return CRYPTO_THREADID_cmp(&a->tid, &b->tid);
-}
-
-static LHASH_OF(ERR_STATE) *int_thread_get(int create, int lockit)
-{
- LHASH_OF(ERR_STATE) *ret = NULL;
-
- if (lockit)
- CRYPTO_w_lock(CRYPTO_LOCK_ERR);
- if (!int_thread_hash && create) {
- int_thread_hash = lh_ERR_STATE_new(err_state_hash, err_state_cmp);
- }
- if (int_thread_hash != NULL) {
- refcount.references++;
- ret = int_thread_hash;
- }
- if (lockit)
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
- return ret;
-}
-
-static void int_thread_release(LHASH_OF(ERR_STATE) **hash)
-{
- int i;
-
- if (hash == NULL || *hash == NULL)
- return;
-
- i = CRYPTO_add(&refcount.references, -1, CRYPTO_LOCK_ERR);
-
- REF_PRINT_COUNT(&refcount, "ERR");
- if (i > 0)
- return;
- REF_ASSERT_ISNT(i < 0);
- *hash = NULL;
-}
-
-static ERR_STATE *int_thread_get_item(const ERR_STATE *d)
-{
- ERR_STATE *p = NULL;
- LHASH_OF(ERR_STATE) *hash;
-
- CRYPTO_r_lock(CRYPTO_LOCK_ERR);
- hash = int_thread_get(0, 0);
- if (hash)
- p = lh_ERR_STATE_retrieve(hash, d);
- CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
-
- int_thread_release(&hash);
- return p;
-}
-
-static ERR_STATE *int_thread_set_item(ERR_STATE *d)
-{
- ERR_STATE *p = NULL;
- LHASH_OF(ERR_STATE) *hash;
-
- CRYPTO_w_lock(CRYPTO_LOCK_ERR);
- hash = int_thread_get(1, 0);
- if (hash)
- p = lh_ERR_STATE_insert(hash, d);
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
-
- int_thread_release(&hash);
- return p;
-}
-
-static void int_thread_del_item(const ERR_STATE *d)
-{
- ERR_STATE *p = NULL;
- LHASH_OF(ERR_STATE) *hash;
-
- CRYPTO_w_lock(CRYPTO_LOCK_ERR);
- hash = int_thread_get(0, 0);
- if (hash) {
- p = lh_ERR_STATE_delete(hash, d);
- /* If there are no other references, and we just removed the
- * last item, delete the int_thread_hash */
- if (refcount.references == 1
- && int_thread_hash
- && lh_ERR_STATE_num_items(int_thread_hash) == 0) {
- refcount.references = 0;
- lh_ERR_STATE_free(int_thread_hash);
- int_thread_hash = NULL;
- hash = NULL;
- }
- }
- CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
-
- int_thread_release(&hash);
- ERR_STATE_free(p);
-}
-
#ifndef OPENSSL_NO_ERR
# define NUM_SYS_STR_REASONS 127
# define LEN_SYS_STR_REASON 32
}
}
-/* BAD for multi-threading: uses a local buffer if ret == NULL */
/*
* ERR_error_string_n should be used instead for ret != NULL as
* ERR_error_string cannot know how large the buffer is
return get_hash(0, 1);
}
-LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void)
-{
- return int_thread_get(0, 1);
-}
-
-void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash)
-{
- int_thread_release(hash);
-}
-
const char *ERR_lib_error_string(unsigned long e)
{
ERR_STRING_DATA d, *p;
return ((p == NULL) ? NULL : p->string);
}
-void ERR_remove_thread_state(const CRYPTO_THREADID *id)
+void ERR_remove_thread_state(void)
{
- ERR_STATE tmp;
+ ERR_STATE *state = ERR_get_state();
+ if (state == NULL)
+ return;
- if (id)
- CRYPTO_THREADID_cpy(&tmp.tid, id);
- else
- CRYPTO_THREADID_current(&tmp.tid);
- /*
- * thread_del_item automatically destroys the LHASH if the number of
- * items reaches zero.
- */
- int_thread_del_item(&tmp);
+ CRYPTO_THREAD_set_local(&err_thread_local, NULL);
+ ERR_STATE_free(state);
}
#if OPENSSL_API_COMPAT < 0x10000000L
void ERR_remove_state(unsigned long pid)
{
- ERR_remove_thread_state(NULL);
+ ERR_remove_thread_state();
}
#endif
+static void err_do_init(void)
+{
+ CRYPTO_THREAD_init_local(&err_thread_local, NULL);
+}
+
ERR_STATE *ERR_get_state(void)
{
- static ERR_STATE fallback;
- ERR_STATE *ret, tmp, *tmpp = NULL;
- int i;
- CRYPTO_THREADID tid;
-
- CRYPTO_THREADID_current(&tid);
- CRYPTO_THREADID_cpy(&tmp.tid, &tid);
- ret = int_thread_get_item(&tmp);
-
- /* ret == the error state, if NULL, make a new one */
- if (ret == NULL) {
- ret = OPENSSL_malloc(sizeof(*ret));
- if (ret == NULL)
- return (&fallback);
- CRYPTO_THREADID_cpy(&ret->tid, &tid);
- ret->top = 0;
- ret->bottom = 0;
- for (i = 0; i < ERR_NUM_ERRORS; i++) {
- ret->err_data[i] = NULL;
- ret->err_data_flags[i] = 0;
- }
- tmpp = int_thread_set_item(ret);
- /* To check if insertion failed, do a get. */
- if (int_thread_get_item(ret) != ret) {
- ERR_STATE_free(ret); /* could not insert it */
- return (&fallback);
+ ERR_STATE *state = NULL;
+
+ CRYPTO_THREAD_run_once(&err_init, err_do_init);
+
+ state = CRYPTO_THREAD_get_local(&err_thread_local);
+
+ if (state == NULL) {
+ state = OPENSSL_zalloc(sizeof(*state));
+ if (state == NULL)
+ return NULL;
+
+ if (!CRYPTO_THREAD_set_local(&err_thread_local, state)) {
+ ERR_STATE_free(state);
+ return NULL;
}
- /*
- * If a race occurred in this function and we came second, tmpp is
- * the first one that we just replaced.
- */
- ERR_STATE_free(tmpp);
/* Ignore failures from these */
OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE);
}
- return ret;
+
+ return state;
}
int ERR_get_next_error_library(void)
projects / oweals / openssl.git / commitdiff