mirror of
https://github.com/signalwire/freeswitch.git
synced 2026-07-05 03:41:53 +00:00
Seven Du
122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/*
|
|
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
|
|
* Copyright (C) 2025-2025, Anthony Minessale II <anthm@freeswitch.org>
|
|
*
|
|
* Version: MPL 1.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Seven Du <dujinfang@gmail.com>
|
|
* Portions created by the Initial Developer are Copyright (C)
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Seven Du <dujinfang@gmail.com>
|
|
*
|
|
* switch_uuidv7.c -- UUIDv7 generation functions
|
|
*
|
|
*/
|
|
|
|
#include <switch.h>
|
|
#include "private/switch_uuidv7_pvt.h"
|
|
#ifdef __APPLE__
|
|
#include <sys/random.h> /* for macOS getentropy() */
|
|
#endif
|
|
#ifdef _MSC_VER
|
|
#include <bcrypt.h> /* for BCryptGenRandom */
|
|
#endif
|
|
|
|
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
|
|
#define SWITCH_THREAD_LOCAL static _Thread_local
|
|
#else
|
|
/* Fallback to compiler-specific or other methods */
|
|
#ifdef _MSC_VER
|
|
#define SWITCH_THREAD_LOCAL __declspec(thread)
|
|
#elif defined(__GNUC__)
|
|
#define SWITCH_THREAD_LOCAL static __thread
|
|
#else
|
|
// #error "Compiler does not support thread-local storage"
|
|
#define SWITCH_THREAD_LOCAL static
|
|
#define SWITCH_THREAD_LOCAL_NOT_SUPPORTED
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef SWITCH_THREAD_LOCAL_NOT_SUPPORTED
|
|
SWITCH_THREAD_LOCAL uint8_t uuid_prev[16] = {0};
|
|
SWITCH_THREAD_LOCAL uint8_t rand_bytes[10] = {0};
|
|
SWITCH_THREAD_LOCAL size_t n_rand_consumed = 10;
|
|
#endif
|
|
|
|
static void switch_getentropy(unsigned char *rand_bytes, size_t n_rand_consumed) {
|
|
#ifdef _MSC_VER
|
|
NTSTATUS status = BCryptGenRandom(
|
|
NULL, /* Algorithm handle (NULL for system-preferred RNG) */
|
|
rand_bytes, /* Buffer to receive random bytes */
|
|
(ULONG)n_rand_consumed, /* Size of buffer in bytes */
|
|
BCRYPT_USE_SYSTEM_PREFERRED_RNG /* Flag for system RNG */
|
|
);
|
|
if (status != 0) {
|
|
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error generating random bytes: 0x%lx\n", status);
|
|
}
|
|
#else
|
|
if (getentropy(rand_bytes, n_rand_consumed) != 0) {
|
|
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "getentropy failed");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
int uuidv7_new(uint8_t *uuid_out)
|
|
{
|
|
int8_t status;
|
|
uint64_t unix_ts_ms = switch_time_now() / 1000;
|
|
|
|
#ifdef SWITCH_THREAD_LOCAL_NOT_SUPPORTED
|
|
size_t n_rand_consumed = 10;
|
|
uint8_t rand_bytes[10] = {0};
|
|
#endif
|
|
|
|
switch_getentropy(rand_bytes, n_rand_consumed);
|
|
#ifdef SWITCH_THREAD_LOCAL_NOT_SUPPORTED
|
|
status = uuidv7_generate(uuid_out, unix_ts_ms, rand_bytes, NULL);
|
|
#else
|
|
status = uuidv7_generate(uuid_prev, unix_ts_ms, rand_bytes, uuid_prev);
|
|
#endif
|
|
if (status < 0) {
|
|
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "uuidv7_generate failed: %d\n", status);
|
|
} else if (status == UUIDV7_STATUS_CLOCK_ROLLBACK) {
|
|
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "uuidv7_generate: clock rollback detected\n");
|
|
}
|
|
|
|
#ifdef SWITCH_THREAD_LOCAL_NOT_SUPPORTED
|
|
return status;
|
|
#else
|
|
n_rand_consumed = uuidv7_status_n_rand_consumed(status);
|
|
memcpy(uuid_out, uuid_prev, 16);
|
|
|
|
return status;
|
|
#endif
|
|
}
|
|
|
|
/* For Emacs:
|
|
* Local Variables:
|
|
* mode:c
|
|
* indent-tabs-mode:t
|
|
* tab-width:4
|
|
* c-basic-offset:4
|
|
* End:
|
|
* For VIM:
|
|
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
|
|
*/
|