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
  28 NTSTATUS ndr_push_GUID(struct ndr_push *ndr, int ndr_flags, const struct GUID *r)
  29 {
  30         if (ndr_flags & NDR_SCALARS) {
  31                 NDR_CHECK(ndr_push_align(ndr, 4));
  32                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, r->time_low));
  33                 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, r->time_mid));
  34                 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, r->time_hi_and_version));
  35                 NDR_CHECK(ndr_push_array_uint8(ndr, NDR_SCALARS, r->clock_seq, 2));
  36                 NDR_CHECK(ndr_push_array_uint8(ndr, NDR_SCALARS, r->node, 6));
  37         }
  38         if (ndr_flags & NDR_BUFFERS) {
  39         }
  40         return NT_STATUS_OK;
  41 }
  42
  43 NTSTATUS ndr_pull_GUID(struct ndr_pull *ndr, int ndr_flags, struct GUID *r)
  44 {
  45         if (ndr_flags & NDR_SCALARS) {
  46                 NDR_CHECK(ndr_pull_align(ndr, 4));
  47                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->time_low));
  48                 NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &r->time_mid));
  49                 NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &r->time_hi_and_version));
  50                 NDR_CHECK(ndr_pull_array_uint8(ndr, NDR_SCALARS, r->clock_seq, 2));
  51                 NDR_CHECK(ndr_pull_array_uint8(ndr, NDR_SCALARS, r->node, 6));
  52         }
  53         if (ndr_flags & NDR_BUFFERS) {
  54         }
  55         return NT_STATUS_OK;
  56 }
  57
  58 size_t ndr_size_GUID(const struct GUID *r, int flags)
  59 {
  60         return ndr_size_struct(r, flags, (ndr_push_flags_fn_t)ndr_push_GUID);
  61 }
  62
  63 /**
  64   build a GUID from a string
  65 */
  66 NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
  67 {
  68         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
  69         uint32_t time_low;
  70         uint32_t time_mid, time_hi_and_version;
  71         uint32_t clock_seq[2];
  72         uint32_t node[6];
  73         int i;
  74
  75         if (s == NULL) {
  76                 return NT_STATUS_INVALID_PARAMETER;
  77         }
  78
  79         if (11 == sscanf(s, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
  80                          &time_low, &time_mid, &time_hi_and_version,
  81                          &clock_seq[0], &clock_seq[1],
  82                          &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  83                 status = NT_STATUS_OK;
  84         } else if (11 == sscanf(s, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
  85                                 &time_low, &time_mid, &time_hi_and_version,
  86                                 &clock_seq[0], &clock_seq[1],
  87                                 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  88                 status = NT_STATUS_OK;
  89         }
  90
  91         if (!NT_STATUS_IS_OK(status)) {
  92                 return status;
  93         }
  94
  95         guid->time_low = time_low;
  96         guid->time_mid = time_mid;
  97         guid->time_hi_and_version = time_hi_and_version;
  98         guid->clock_seq[0] = clock_seq[0];
  99         guid->clock_seq[1] = clock_seq[1];
 100         for (i=0;i<6;i++) {
 101                 guid->node[i] = node[i];
 102         }
 103
 104         return NT_STATUS_OK;
 105 }
 106
 107 /**
 108  * generate a random GUID
 109  */
 110 struct GUID GUID_random(void)
 111 {
 112         struct GUID guid;
 113
 114         generate_random_buffer((uint8_t *)&guid, sizeof(guid));
 115         guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
 116         guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
 117
 118         return guid;
 119 }
 120
 121 /**
 122  * generate an empty GUID
 123  */
 124 struct GUID GUID_zero(void)
 125 {
 126         struct GUID guid;
 127
 128         ZERO_STRUCT(guid);
 129
 130         return guid;
 131 }
 132
 133 /**
 134  * see if a range of memory is all zero. A NULL pointer is considered
 135  * to be all zero
 136  */
 137 BOOL all_zero(const uint8_t *ptr, size_t size)
 138 {
 139         int i;
 140         if (!ptr) return True;
 141         for (i=0;i<size;i++) {
 142                 if (ptr[i]) return False;
 143         }
 144         return True;
 145 }
 146
 147
 148 BOOL GUID_all_zero(const struct GUID *u)
 149 {
 150         if (u->time_low != 0 ||
 151             u->time_mid != 0 ||
 152             u->time_hi_and_version != 0 ||
 153             u->clock_seq[0] != 0 ||
 154             u->clock_seq[1] != 0 ||
 155             !all_zero(u->node, 6)) {
 156                 return False;
 157         }
 158         return True;
 159 }
 160
 161 BOOL GUID_equal(const struct GUID *u1, const struct GUID *u2)
 162 {
 163         if (u1->time_low != u2->time_low ||
 164             u1->time_mid != u2->time_mid ||
 165             u1->time_hi_and_version != u2->time_hi_and_version ||
 166             u1->clock_seq[0] != u2->clock_seq[0] ||
 167             u1->clock_seq[1] != u2->clock_seq[1] ||
 168             memcmp(u1->node, u2->node, 6) != 0) {
 169                 return False;
 170         }
 171         return True;
 172 }
 173
 174 /**
 175   its useful to be able to display these in debugging messages
 176 */
 177 char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
 178 {
 179         return talloc_asprintf(mem_ctx,
 180                                "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
 181                                guid->time_low, guid->time_mid,
 182                                guid->time_hi_and_version,
 183                                guid->clock_seq[0],
 184                                guid->clock_seq[1],
 185                                guid->node[0], guid->node[1],
 186                                guid->node[2], guid->node[3],
 187                                guid->node[4], guid->node[5]);
 188 }
 189
 190 char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
 191 {
 192         char *ret, *s = GUID_string(mem_ctx, guid);
 193         ret = talloc_asprintf(mem_ctx, "{%s}", s);
 194         talloc_free(s);
 195         return ret;
 196 }
 197
 198 void ndr_print_GUID(struct ndr_print *ndr, const char *name, const struct GUID *guid)
 199 {
 200         ndr->print(ndr, "%-25s: %s", name, GUID_string(ndr, guid));
 201 }
 202
 203 BOOL policy_handle_empty(struct policy_handle *h)
 204 {
 205         return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
 206 }
 207
 208 NTSTATUS ndr_push_policy_handle(struct ndr_push *ndr, int ndr_flags, const struct policy_handle *r)
 209 {
 210         if (ndr_flags & NDR_SCALARS) {
 211                 NDR_CHECK(ndr_push_align(ndr, 4));
 212                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, r->handle_type));
 213                 NDR_CHECK(ndr_push_GUID(ndr, NDR_SCALARS, &r->uuid));
 214         }
 215         if (ndr_flags & NDR_BUFFERS) {
 216         }
 217         return NT_STATUS_OK;
 218 }
 219
 220 NTSTATUS ndr_pull_policy_handle(struct ndr_pull *ndr, int ndr_flags, struct policy_handle *r)
 221 {
 222         if (ndr_flags & NDR_SCALARS) {
 223                 NDR_CHECK(ndr_pull_align(ndr, 4));
 224                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->handle_type));
 225                 NDR_CHECK(ndr_pull_GUID(ndr, NDR_SCALARS, &r->uuid));
 226         }
 227         if (ndr_flags & NDR_BUFFERS) {
 228         }
 229         return NT_STATUS_OK;
 230 }
 231
 232 void ndr_print_policy_handle(struct ndr_print *ndr, const char *name, const struct policy_handle *r)
 233 {
 234         ndr_print_struct(ndr, name, "policy_handle");
 235         ndr->depth++;
 236         ndr_print_uint32(ndr, "handle_type", r->handle_type);
 237         ndr_print_GUID(ndr, "uuid", &r->uuid);
 238         ndr->depth--;
 239 }
 240
 241 NTSTATUS ndr_push_server_id(struct ndr_push *ndr, int ndr_flags, const struct server_id *r)
 242 {
 243         if (ndr_flags & NDR_SCALARS) {
 244                 NDR_CHECK(ndr_push_align(ndr, 4));
 245                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS,
 246                                           (uint32_t)r->id.pid));
 247         }
 248         if (ndr_flags & NDR_BUFFERS) {
 249         }
 250         return NT_STATUS_OK;
 251 }
 252
 253 NTSTATUS ndr_pull_server_id(struct ndr_pull *ndr, int ndr_flags, struct server_id *r)
 254 {
 255         if (ndr_flags & NDR_SCALARS) {
 256                 uint32_t pid;
 257                 NDR_CHECK(ndr_pull_align(ndr, 4));
 258                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &pid));
 259                 r->id.pid = (pid_t)pid;
 260         }
 261         if (ndr_flags & NDR_BUFFERS) {
 262         }
 263         return NT_STATUS_OK;
 264 }
 265
 266 void ndr_print_server_id(struct ndr_print *ndr, const char *name, const struct server_id *r)
 267 {
 268         ndr_print_struct(ndr, name, "server_id");
 269         ndr->depth++;
 270         ndr_print_uint32(ndr, "id", (uint32_t)r->id.pid);
 271         ndr->depth--;
 272 }