source/librpc/ndr/ndr_misc.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    UUID/GUID/policy_handle functions
   5
   6    Copyright (C) Theodore Ts'o               1996, 1997,
   7    Copyright (C) Jim McDonough                     2002.
   8    Copyright (C) Andrew Tridgell                   2003.
   9    Copyright (C) Stefan (metze) Metzmacher         2004.
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 2 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software
  23    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24 */
  25
  26 #include "includes.h"
  27 #include "system/network.h"
  28
  29 void ndr_print_ipv4_addr(struct ndr_print *ndr, const char *name, const struct ipv4_addr *_ip)
  30 {
  31         struct ipv4_addr ip;
  32
  33         ip.addr = htonl(_ip->addr);
  34
  35         ndr->print(ndr, "%-25s: %s", name, sys_inet_ntoa(ip));
  36 }
  37
  38 /*
  39   build a GUID from a string
  40 */
  41 NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
  42 {
  43         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
  44         uint32_t time_low;
  45         uint32_t time_mid, time_hi_and_version;
  46         uint32_t clock_seq[2];
  47         uint32_t node[6];
  48         int i;
  49
  50         if (s == NULL) {
  51                 return NT_STATUS_INVALID_PARAMETER;
  52         }
  53
  54         if (11 == sscanf(s, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
  55                          &time_low, &time_mid, &time_hi_and_version,
  56                          &clock_seq[0], &clock_seq[1],
  57                          &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  58                 status = NT_STATUS_OK;
  59         } else if (11 == sscanf(s, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
  60                                 &time_low, &time_mid, &time_hi_and_version,
  61                                 &clock_seq[0], &clock_seq[1],
  62                                 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  63                 status = NT_STATUS_OK;
  64         }
  65
  66         if (!NT_STATUS_IS_OK(status)) {
  67                 return status;
  68         }
  69
  70         guid->time_low = time_low;
  71         guid->time_mid = time_mid;
  72         guid->time_hi_and_version = time_hi_and_version;
  73         guid->clock_seq[0] = clock_seq[0];
  74         guid->clock_seq[1] = clock_seq[1];
  75         for (i=0;i<6;i++) {
  76                 guid->node[i] = node[i];
  77         }
  78
  79         return NT_STATUS_OK;
  80 }
  81
  82 /* generate a random GUID */
  83 struct GUID GUID_random(void)
  84 {
  85         struct GUID guid;
  86
  87         generate_random_buffer((uint8_t *)&guid, sizeof(guid));
  88         guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
  89         guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
  90
  91         return guid;
  92 }
  93
  94 BOOL GUID_all_zero(const struct GUID *u)
  95 {
  96         if (u->time_low != 0 ||
  97             u->time_mid != 0 ||
  98             u->time_hi_and_version != 0 ||
  99             u->clock_seq[0] != 0 ||
 100             u->clock_seq[1] != 0 ||
 101             !all_zero(u->node, 6)) {
 102                 return False;
 103         }
 104         return True;
 105 }
 106
 107 BOOL GUID_equal(const struct GUID *u1, const struct GUID *u2)
 108 {
 109         if (u1->time_low != u2->time_low ||
 110             u1->time_mid != u2->time_mid ||
 111             u1->time_hi_and_version != u2->time_hi_and_version ||
 112             u1->clock_seq[0] != u2->clock_seq[0] ||
 113             u1->clock_seq[1] != u2->clock_seq[1] ||
 114             memcmp(u1->node, u2->node, 6) != 0) {
 115                 return False;
 116         }
 117         return True;
 118 }
 119
 120 /*
 121   its useful to be able to display these in debugging messages
 122 */
 123 char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
 124 {
 125         return talloc_asprintf(mem_ctx,
 126                                "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
 127                                guid->time_low, guid->time_mid,
 128                                guid->time_hi_and_version,
 129                                guid->clock_seq[0],
 130                                guid->clock_seq[1],
 131                                guid->node[0], guid->node[1],
 132                                guid->node[2], guid->node[3],
 133                                guid->node[4], guid->node[5]);
 134 }
 135
 136 char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
 137 {
 138         return talloc_asprintf(mem_ctx,
 139                                "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
 140                                guid->time_low, guid->time_mid,
 141                                guid->time_hi_and_version,
 142                                guid->clock_seq[0],
 143                                guid->clock_seq[1],
 144                                guid->node[0], guid->node[1],
 145                                guid->node[2], guid->node[3],
 146                                guid->node[4], guid->node[5]);
 147 }
 148
 149 void ndr_print_GUID(struct ndr_print *ndr, const char *name, const struct GUID *guid)
 150 {
 151         ndr->print(ndr, "%-25s: %s", name, GUID_string(ndr, guid));
 152 }
 153
 154 BOOL policy_handle_empty(struct policy_handle *h)
 155 {
 156         return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
 157 }