/* * Unix SMB/CIFS implementation. * UUID server routines * Copyright (C) Theodore Ts'o 1996, 1997, * Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002, 2003 * * 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 3 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, see <http://www.gnu.org/licenses/>. */ #include "includes.h" /* * Offset between 15-Oct-1582 and 1-Jan-70 */ #define TIME_OFFSET_HIGH 0x01B21DD2 #define TIME_OFFSET_LOW 0x13814000 void smb_uuid_pack(const struct GUID uu, UUID_FLAT *ptr) { SIVAL(ptr->info, 0, uu.time_low); SSVAL(ptr->info, 4, uu.time_mid); SSVAL(ptr->info, 6, uu.time_hi_and_version); memcpy(ptr->info+8, uu.clock_seq, 2); memcpy(ptr->info+10, uu.node, 6); } void smb_uuid_unpack(const UUID_FLAT in, struct GUID *uu) { uu->time_low = IVAL(in.info, 0); uu->time_mid = SVAL(in.info, 4); uu->time_hi_and_version = SVAL(in.info, 6); memcpy(uu->clock_seq, in.info+8, 2); memcpy(uu->node, in.info+10, 6); } void smb_uuid_generate_random(struct GUID *uu) { UUID_FLAT tmp; generate_random_buffer(tmp.info, sizeof(tmp.info)); smb_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; } const char *smb_uuid_string(TALLOC_CTX *mem_ctx, const struct GUID uu) { char *result; result = talloc_asprintf( mem_ctx, "%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]); SMB_ASSERT(result != NULL); return result; } bool smb_string_to_uuid(const char *in, struct GUID* uu) { bool ret = False; const char *ptr = in; char *end = (char *)in; int i; unsigned v1, v2; if (!in || !uu) goto out; uu->time_low = strtoul(ptr, &end, 16); if ((end - ptr) != 8 || *end != '-') goto out; ptr = (end + 1); uu->time_mid = strtoul(ptr, &end, 16); if ((end - ptr) != 4 || *end != '-') goto out; ptr = (end + 1); uu->time_hi_and_version = strtoul(ptr, &end, 16); if ((end - ptr) != 4 || *end != '-') goto out; ptr = (end + 1); if (sscanf(ptr, "%02x%02x", &v1, &v2) != 2) { goto out; } uu->clock_seq[0] = v1; uu->clock_seq[1] = v2; ptr += 4; if (*ptr != '-') goto out; ptr++; for (i = 0; i < 6; i++) { if (sscanf(ptr, "%02x", &v1) != 1) { goto out; } uu->node[i] = v1; ptr += 2; } ret = True; out: return ret; } /***************************************************************** Return the binary string representation of a GUID. Caller must free. *****************************************************************/ char *guid_binstring(const struct GUID *guid) { UUID_FLAT guid_flat; smb_uuid_pack(*guid, &guid_flat); return binary_string_rfc2254((char *)guid_flat.info, UUID_FLAT_SIZE); }