diff options
Diffstat (limited to 'source3/lib/util_uuid.c')
| -rw-r--r-- | source3/lib/util_uuid.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/source3/lib/util_uuid.c b/source3/lib/util_uuid.c new file mode 100644 index 0000000000..3a8f7b3f4f --- /dev/null +++ b/source3/lib/util_uuid.c @@ -0,0 +1,131 @@ +/* + * 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); +} |