/* * Unix SMB/CIFS implementation. * UUID server routines * Copyright (C) Theodore Ts'o 1996, 1997, * Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "includes.h" /* * Offset between 15-Oct-1582 and 1-Jan-70 */ #define TIME_OFFSET_HIGH 0x01B21DD2 #define TIME_OFFSET_LOW 0x13814000 struct uuid { uint32 time_low; uint16 time_mid; uint16 time_hi_and_version; uint8 clock_seq[2]; uint8 node[6]; }; static void uuid_pack(const struct uuid *uu, GUID *ptr) { uint8 *out = ptr->info; SIVAL(out, 0, uu->time_low); SSVAL(out, 4, uu->time_mid); SSVAL(out, 6, uu->time_hi_and_version); memcpy(out+8, uu->clock_seq, 2); memcpy(out+10, uu->node, 6); } static void uuid_unpack(const GUID in, struct uuid *uu) { const uint8 *ptr = in.info; uu->time_low = IVAL(ptr, 0); uu->time_mid = SVAL(ptr, 4); uu->time_hi_and_version = SVAL(ptr, 6); memcpy(uu->clock_seq, ptr+8, 2); memcpy(uu->node, ptr+10, 6); } void smb_uuid_generate_random(GUID *out) { GUID tmp; struct uuid uu; generate_random_buffer(tmp.info, sizeof(tmp.info), True); uuid_unpack(tmp, &uu); uu.clock_seq[0] = (uu.clock_seq[0] & 0x3F) | 0x80; uu.time_hi_and_version = (uu.time_hi_and_version & 0x0FFF) | 0x4000; uuid_pack(&uu, out); } char *smb_uuid_to_string(const GUID in) { struct uuid uu; char *out; uuid_unpack(in, &uu); asprintf(&out, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", uu.time_low, uu.time_mid, uu.time_hi_and_version, uu.clock_seq[0], uu.clock_seq[1], uu.node[0], uu.node[1], uu.node[2], uu.node[3], uu.node[4], uu.node[5]); return out; } const char *smb_uuid_string_static(const GUID in) { struct uuid uu; static char out[37]; uuid_unpack(in, &uu); slprintf(out, sizeof(out) -1, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", uu.time_low, uu.time_mid, uu.time_hi_and_version, uu.clock_seq[0], uu.clock_seq[1], uu.node[0], uu.node[1], uu.node[2], uu.node[3], uu.node[4], uu.node[5]); return out; }