| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #include "../libnetdata.h" |
| 4 | #undef uuid_generate |
| 5 | #undef uuid_generate_random |
| 6 | #undef uuid_generate_time |
| 7 | |
| 8 | #ifdef OS_WINDOWS |
| 9 | void os_uuid_generate(nd_uuid_t out) { |
| 10 | // nd_uuid_t is byte-aligned storage, so use aligned local UUID storage |
| 11 | // before copying the generated bytes to the caller's output buffer. |
| 12 | UUID uuid; |
| 13 | RPC_STATUS status = UuidCreate(&uuid); |
| 14 | while (status != RPC_S_OK && status != RPC_S_UUID_LOCAL_ONLY) { |
| 15 | tinysleep(); |
| 16 | status = UuidCreate(&uuid); |
| 17 | } |
| 18 | memcpy(out, &uuid, sizeof(uuid)); |
| 19 | } |
| 20 | |
| 21 | void os_uuid_generate_random(nd_uuid_t out) { |
| 22 | os_uuid_generate(out); |
| 23 | } |
| 24 | |
| 25 | void os_uuid_generate_time(nd_uuid_t out) { |
| 26 | os_uuid_generate(out); |
| 27 | } |
| 28 | |
| 29 | #else |
| 30 | |
| 31 | #if defined(OS_MACOS) |
| 32 | #include <uuid/uuid.h> |
| 33 | #else |
| 34 | #include <uuid.h> |
| 35 | #endif |
| 36 | |
| 37 | void os_uuid_generate(nd_uuid_t out) { |
| 38 | // IMPORTANT: this generates a UUIDv4, which is random |
| 39 | // and falls back to uuid_generate_time() if high resolution random generated is not available |
| 40 | uuid_generate(out); |
| 41 | } |
| 42 | |
| 43 | void os_uuid_generate_random(nd_uuid_t out) { |
| 44 | uuid_generate_random(out); |
| 45 | } |
| 46 | |
| 47 | void os_uuid_generate_time(nd_uuid_t out) { |
| 48 | // IMPORTANT: this generates a UUIDv1, which is not random and may suffer from collisions |
| 49 | uuid_generate_time(out); |
| 50 | } |
| 51 | |
| 52 | #endif |