mirror of
https://github.com/samba-team/samba.git
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132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
/*
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* Unix SMB/CIFS implementation.
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* UUID server routines
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* Copyright (C) Theodore Ts'o 1996, 1997,
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* Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002, 2003
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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/*
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* Offset between 15-Oct-1582 and 1-Jan-70
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*/
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#define TIME_OFFSET_HIGH 0x01B21DD2
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#define TIME_OFFSET_LOW 0x13814000
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void smb_uuid_pack(const struct GUID uu, UUID_FLAT *ptr)
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{
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SIVAL(ptr->info, 0, uu.time_low);
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SSVAL(ptr->info, 4, uu.time_mid);
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SSVAL(ptr->info, 6, uu.time_hi_and_version);
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memcpy(ptr->info+8, uu.clock_seq, 2);
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memcpy(ptr->info+10, uu.node, 6);
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}
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void smb_uuid_unpack(const UUID_FLAT in, struct GUID *uu)
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{
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uu->time_low = IVAL(in.info, 0);
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uu->time_mid = SVAL(in.info, 4);
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uu->time_hi_and_version = SVAL(in.info, 6);
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memcpy(uu->clock_seq, in.info+8, 2);
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memcpy(uu->node, in.info+10, 6);
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}
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void smb_uuid_generate_random(struct GUID *uu)
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{
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UUID_FLAT tmp;
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generate_random_buffer(tmp.info, sizeof(tmp.info));
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smb_uuid_unpack(tmp, uu);
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uu->clock_seq[0] = (uu->clock_seq[0] & 0x3F) | 0x80;
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uu->time_hi_and_version = (uu->time_hi_and_version & 0x0FFF) | 0x4000;
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}
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const char *smb_uuid_string(TALLOC_CTX *mem_ctx, const struct GUID uu)
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{
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char *result;
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result = talloc_asprintf(
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mem_ctx,
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"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
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uu.time_low, uu.time_mid, uu.time_hi_and_version,
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uu.clock_seq[0], uu.clock_seq[1],
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uu.node[0], uu.node[1], uu.node[2],
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uu.node[3], uu.node[4], uu.node[5]);
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SMB_ASSERT(result != NULL);
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return result;
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}
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bool smb_string_to_uuid(const char *in, struct GUID* uu)
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{
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bool ret = False;
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const char *ptr = in;
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char *end = (char *)in;
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int i;
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unsigned v1, v2;
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if (!in || !uu) goto out;
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uu->time_low = strtoul(ptr, &end, 16);
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if ((end - ptr) != 8 || *end != '-') goto out;
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ptr = (end + 1);
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uu->time_mid = strtoul(ptr, &end, 16);
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if ((end - ptr) != 4 || *end != '-') goto out;
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ptr = (end + 1);
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uu->time_hi_and_version = strtoul(ptr, &end, 16);
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if ((end - ptr) != 4 || *end != '-') goto out;
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ptr = (end + 1);
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if (sscanf(ptr, "%02x%02x", &v1, &v2) != 2) {
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goto out;
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}
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uu->clock_seq[0] = v1;
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uu->clock_seq[1] = v2;
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ptr += 4;
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if (*ptr != '-') goto out;
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ptr++;
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for (i = 0; i < 6; i++) {
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if (sscanf(ptr, "%02x", &v1) != 1) {
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goto out;
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}
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uu->node[i] = v1;
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ptr += 2;
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}
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ret = True;
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out:
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return ret;
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}
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/*****************************************************************
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Return the binary string representation of a GUID.
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Caller must free.
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*****************************************************************/
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char *guid_binstring(const struct GUID *guid)
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{
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UUID_FLAT guid_flat;
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smb_uuid_pack(*guid, &guid_flat);
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return binary_string_rfc2254((char *)guid_flat.info, UUID_FLAT_SIZE);
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}
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