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 3 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, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26
  27 NTSTATUS ndr_push_GUID(struct ndr_push *ndr, int ndr_flags, const struct GUID *r)
  28 {
  29         if (ndr_flags & NDR_SCALARS) {
  30                 NDR_CHECK(ndr_push_align(ndr, 4));
  31                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, r->time_low));
  32                 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, r->time_mid));
  33                 NDR_CHECK(ndr_push_uint16(ndr, NDR_SCALARS, r->time_hi_and_version));
  34                 NDR_CHECK(ndr_push_array_uint8(ndr, NDR_SCALARS, r->clock_seq, 2));
  35                 NDR_CHECK(ndr_push_array_uint8(ndr, NDR_SCALARS, r->node, 6));
  36         }
  37         if (ndr_flags & NDR_BUFFERS) {
  38         }
  39         return NT_STATUS_OK;
  40 }
  41
  42 NTSTATUS ndr_pull_GUID(struct ndr_pull *ndr, int ndr_flags, struct GUID *r)
  43 {
  44         if (ndr_flags & NDR_SCALARS) {
  45                 NDR_CHECK(ndr_pull_align(ndr, 4));
  46                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->time_low));
  47                 NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &r->time_mid));
  48                 NDR_CHECK(ndr_pull_uint16(ndr, NDR_SCALARS, &r->time_hi_and_version));
  49                 NDR_CHECK(ndr_pull_array_uint8(ndr, NDR_SCALARS, r->clock_seq, 2));
  50                 NDR_CHECK(ndr_pull_array_uint8(ndr, NDR_SCALARS, r->node, 6));
  51         }
  52         if (ndr_flags & NDR_BUFFERS) {
  53         }
  54         return NT_STATUS_OK;
  55 }
  56
  57 size_t ndr_size_GUID(const struct GUID *r, int flags)
  58 {
  59         return ndr_size_struct(r, flags, (ndr_push_flags_fn_t)ndr_push_GUID);
  60 }
  61
  62 /**
  63   build a GUID from a string
  64 */
  65 NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
  66 {
  67         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
  68         uint32_t time_low;
  69         uint32_t time_mid, time_hi_and_version;
  70         uint32_t clock_seq[2];
  71         uint32_t node[6];
  72         int i;
  73
  74         if (s == NULL) {
  75                 return NT_STATUS_INVALID_PARAMETER;
  76         }
  77
  78         if (11 == sscanf(s, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
  79                          &time_low, &time_mid, &time_hi_and_version,
  80                          &clock_seq[0], &clock_seq[1],
  81                          &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  82                 status = NT_STATUS_OK;
  83         } else if (11 == sscanf(s, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
  84                                 &time_low, &time_mid, &time_hi_and_version,
  85                                 &clock_seq[0], &clock_seq[1],
  86                                 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
  87                 status = NT_STATUS_OK;
  88         }
  89
  90         if (!NT_STATUS_IS_OK(status)) {
  91                 return status;
  92         }
  93
  94         guid->time_low = time_low;
  95         guid->time_mid = time_mid;
  96         guid->time_hi_and_version = time_hi_and_version;
  97         guid->clock_seq[0] = clock_seq[0];
  98         guid->clock_seq[1] = clock_seq[1];
  99         for (i=0;i<6;i++) {
 100                 guid->node[i] = node[i];
 101         }
 102
 103         return NT_STATUS_OK;
 104 }
 105
 106 /**
 107  * generate a random GUID
 108  */
 109 struct GUID GUID_random(void)
 110 {
 111         struct GUID guid;
 112
 113         generate_random_buffer((uint8_t *)&guid, sizeof(guid));
 114         guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
 115         guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
 116
 117         return guid;
 118 }
 119
 120 /**
 121  * generate an empty GUID
 122  */
 123 struct GUID GUID_zero(void)
 124 {
 125         struct GUID guid;
 126
 127         ZERO_STRUCT(guid);
 128
 129         return guid;
 130 }
 131
 132 /**
 133  * see if a range of memory is all zero. A NULL pointer is considered
 134  * to be all zero
 135  */
 136 BOOL all_zero(const uint8_t *ptr, size_t size)
 137 {
 138         int i;
 139         if (!ptr) return True;
 140         for (i=0;i<size;i++) {
 141                 if (ptr[i]) return False;
 142         }
 143         return True;
 144 }
 145
 146
 147 BOOL GUID_all_zero(const struct GUID *u)
 148 {
 149         if (u->time_low != 0 ||
 150             u->time_mid != 0 ||
 151             u->time_hi_and_version != 0 ||
 152             u->clock_seq[0] != 0 ||
 153             u->clock_seq[1] != 0 ||
 154             !all_zero(u->node, 6)) {
 155                 return False;
 156         }
 157         return True;
 158 }
 159
 160 BOOL GUID_equal(const struct GUID *u1, const struct GUID *u2)
 161 {
 162         if (u1->time_low != u2->time_low ||
 163             u1->time_mid != u2->time_mid ||
 164             u1->time_hi_and_version != u2->time_hi_and_version ||
 165             u1->clock_seq[0] != u2->clock_seq[0] ||
 166             u1->clock_seq[1] != u2->clock_seq[1] ||
 167             memcmp(u1->node, u2->node, 6) != 0) {
 168                 return False;
 169         }
 170         return True;
 171 }
 172
 173 /**
 174   its useful to be able to display these in debugging messages
 175 */
 176 char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
 177 {
 178         return talloc_asprintf(mem_ctx,
 179                                "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
 180                                guid->time_low, guid->time_mid,
 181                                guid->time_hi_and_version,
 182                                guid->clock_seq[0],
 183                                guid->clock_seq[1],
 184                                guid->node[0], guid->node[1],
 185                                guid->node[2], guid->node[3],
 186                                guid->node[4], guid->node[5]);
 187 }
 188
 189 char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
 190 {
 191         char *ret, *s = GUID_string(mem_ctx, guid);
 192         ret = talloc_asprintf(mem_ctx, "{%s}", s);
 193         talloc_free(s);
 194         return ret;
 195 }
 196
 197 void ndr_print_GUID(struct ndr_print *ndr, const char *name, const struct GUID *guid)
 198 {
 199         ndr->print(ndr, "%-25s: %s", name, GUID_string(ndr, guid));
 200 }
 201
 202 BOOL policy_handle_empty(struct policy_handle *h)
 203 {
 204         return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
 205 }
 206
 207 NTSTATUS ndr_push_policy_handle(struct ndr_push *ndr, int ndr_flags, const struct policy_handle *r)
 208 {
 209         if (ndr_flags & NDR_SCALARS) {
 210                 NDR_CHECK(ndr_push_align(ndr, 4));
 211                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, r->handle_type));
 212                 NDR_CHECK(ndr_push_GUID(ndr, NDR_SCALARS, &r->uuid));
 213         }
 214         if (ndr_flags & NDR_BUFFERS) {
 215         }
 216         return NT_STATUS_OK;
 217 }
 218
 219 NTSTATUS ndr_pull_policy_handle(struct ndr_pull *ndr, int ndr_flags, struct policy_handle *r)
 220 {
 221         if (ndr_flags & NDR_SCALARS) {
 222                 NDR_CHECK(ndr_pull_align(ndr, 4));
 223                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->handle_type));
 224                 NDR_CHECK(ndr_pull_GUID(ndr, NDR_SCALARS, &r->uuid));
 225         }
 226         if (ndr_flags & NDR_BUFFERS) {
 227         }
 228         return NT_STATUS_OK;
 229 }
 230
 231 void ndr_print_policy_handle(struct ndr_print *ndr, const char *name, const struct policy_handle *r)
 232 {
 233         ndr_print_struct(ndr, name, "policy_handle");
 234         ndr->depth++;
 235         ndr_print_uint32(ndr, "handle_type", r->handle_type);
 236         ndr_print_GUID(ndr, "uuid", &r->uuid);
 237         ndr->depth--;
 238 }
 239
 240 NTSTATUS ndr_push_server_id(struct ndr_push *ndr, int ndr_flags, const struct server_id *r)
 241 {
 242         if (ndr_flags & NDR_SCALARS) {
 243                 NDR_CHECK(ndr_push_align(ndr, 4));
 244                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS,
 245                                           (uint32_t)r->pid));
 246 #ifdef CLUSTER_SUPPORT
 247                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS,
 248                                           (uint32_t)r->vnn));
 249 #endif
 250         }
 251         if (ndr_flags & NDR_BUFFERS) {
 252         }
 253         return NT_STATUS_OK;
 254 }
 255
 256 NTSTATUS ndr_pull_server_id(struct ndr_pull *ndr, int ndr_flags, struct server_id *r)
 257 {
 258         if (ndr_flags & NDR_SCALARS) {
 259                 uint32_t pid;
 260                 NDR_CHECK(ndr_pull_align(ndr, 4));
 261                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &pid));
 262 #ifdef CLUSTER_SUPPORT
 263                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->vnn));
 264 #endif
 265                 r->pid = (pid_t)pid;
 266         }
 267         if (ndr_flags & NDR_BUFFERS) {
 268         }
 269         return NT_STATUS_OK;
 270 }
 271
 272 void ndr_print_server_id(struct ndr_print *ndr, const char *name, const struct server_id *r)
 273 {
 274         ndr_print_struct(ndr, name, "server_id");
 275         ndr->depth++;
 276         ndr_print_uint32(ndr, "id", (uint32_t)r->pid);
 277 #ifdef CLUSTER_SUPPORT
 278         ndr_print_uint32(ndr, "vnn", (uint32_t)r->vnn);
 279 #endif
 280         ndr->depth--;
 281 }