source4/lib/wmi/wbemdata.c

   1 /*
   2    WMI Implementation
   3    Copyright (C) 2006 Andrzej Hajda <andrzej.hajda@wp.pl>
   4    Copyright (C) 2008 Jelmer Vernooij <jelmer@samba.org>
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "includes.h"
  22 #include "librpc/gen_ndr/dcom.h"
  23 #include "librpc/gen_ndr/com_dcom.h"
  24 #include "librpc/ndr/libndr.h"
  25 #include "librpc/ndr/libndr_proto.h"
  26 #include "lib/com/com.h"
  27 #include "lib/com/dcom/dcom.h"
  28 #include "lib/util/dlinklist.h"
  29 #include "librpc/ndr/libndr.h"
  30 #include "librpc/gen_ndr/ndr_dcom.h"
  31 #include "librpc/rpc/dcerpc.h"
  32 #include "librpc/gen_ndr/ndr_misc.h"
  33 #include "lib/talloc/talloc.h"
  34 #include "libcli/composite/composite.h"
  35 #include "lib/wmi/wmi.h"
  36 #include "librpc/gen_ndr/ndr_wmi.h"
  37
  38 enum {
  39         DATATYPE_CLASSOBJECT = 2,
  40         DATATYPE_OBJECT = 3,
  41         COFLAG_IS_CLASS = 4,
  42 };
  43
  44 static enum ndr_err_code marshal(TALLOC_CTX *mem_ctx, struct IUnknown *pv, struct OBJREF *o)
  45 {
  46         struct ndr_push *ndr;
  47         struct IWbemClassObject *wco;
  48         struct MInterfacePointer *mp;
  49
  50         mp = (struct MInterfacePointer *)((char *)o - offsetof(struct MInterfacePointer, obj)); /* FIXME:high remove this Mumbo Jumbo */
  51         wco = pv->object_data;
  52         ndr = talloc_zero(mem_ctx, struct ndr_push);
  53         ndr->flags = 0;
  54         ndr->alloc_size = 1024;
  55         ndr->data = talloc_array(mp, uint8_t, ndr->alloc_size);
  56
  57         if (wco) {
  58                 uint32_t ofs;
  59                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0x12345678));
  60                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
  61                 NDR_CHECK(ndr_push_IWbemClassObject(ndr, NDR_SCALARS | NDR_BUFFERS, wco));
  62                 ofs = ndr->offset;
  63                 ndr->offset = 4;
  64                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, ofs - 8));
  65                 ndr->offset = ofs;
  66         } else {
  67                 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, 0));
  68         }
  69         o->u_objref.u_custom.pData = talloc_realloc(mp, ndr->data, uint8_t, ndr->offset);
  70         o->u_objref.u_custom.size = ndr->offset;
  71         mp->size = sizeof(struct OBJREF) - sizeof(union OBJREF_Types) + sizeof(struct u_custom) + o->u_objref.u_custom.size - 4;
  72         if (DEBUGLVL(9)) {
  73                 NDR_PRINT_DEBUG(IWbemClassObject, wco);
  74         }
  75         return NDR_ERR_SUCCESS;
  76 }
  77
  78 static enum ndr_err_code unmarshal(TALLOC_CTX *mem_ctx, struct OBJREF *o, struct IUnknown **pv)
  79 {
  80         struct ndr_pull *ndr;
  81         struct IWbemClassObject *wco;
  82         enum ndr_err_code ndr_err;
  83         uint32_t u;
  84
  85         mem_ctx = talloc_new(0);
  86         ndr = talloc_zero(mem_ctx, struct ndr_pull);
  87         ndr->current_mem_ctx = mem_ctx;
  88         ndr->data = o->u_objref.u_custom.pData;
  89         ndr->data_size = o->u_objref.u_custom.size;
  90
  91         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
  92         if (!u) {
  93                 talloc_free(*pv);
  94                 *pv = NULL;
  95                 return NDR_ERR_SUCCESS;
  96         }
  97         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
  98         if (u + 8 > ndr->data_size) {
  99                 DEBUG(1, ("unmarshall_IWbemClassObject: Incorrect data_size"));
 100                 return NDR_ERR_BUFSIZE;
 101         }
 102         wco = talloc_zero(*pv, struct IWbemClassObject);
 103         ndr->current_mem_ctx = wco;
 104         ndr_err = ndr_pull_IWbemClassObject(ndr, NDR_SCALARS | NDR_BUFFERS, wco);
 105
 106         if (NDR_ERR_CODE_IS_SUCCESS(ndr_err) && (DEBUGLVL(9))) {
 107                 NDR_PRINT_DEBUG(IWbemClassObject, wco);
 108         }
 109
 110         if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 111                 (*pv)->object_data = wco;
 112         } else {
 113                 talloc_free(wco);
 114         }
 115         return NDR_ERR_SUCCESS;
 116 }
 117
 118 WERROR dcom_IWbemClassObject_from_WbemClassObject(struct com_context *ctx, struct IWbemClassObject **_p, struct IWbemClassObject *wco)
 119 {
 120         struct IWbemClassObject *p;
 121
 122         p = talloc_zero(ctx, struct IWbemClassObject);
 123         p->ctx = ctx;
 124         p->obj.signature = 0x574f454d;
 125         p->obj.flags = OBJREF_CUSTOM;
 126         GUID_from_string("dc12a681-737f-11cf-884d-00aa004b2e24", &p->obj.iid);
 127         GUID_from_string("4590f812-1d3a-11d0-891f-00aa004b2e24", &p->obj.u_objref.u_custom.clsid);
 128         p->object_data = (void *)wco;
 129         talloc_steal(p, p->object_data);
 130         *_p = p;
 131         return WERR_OK;
 132 }
 133
 134 WERROR IWbemClassObject_GetMethod(struct IWbemClassObject *d, TALLOC_CTX *mem_ctx, const char *name, uint32_t flags, struct IWbemClassObject **in, struct IWbemClassObject **out)
 135 {
 136         uint32_t i;
 137         struct IWbemClassObject *wco;
 138
 139         wco = (struct IWbemClassObject *)d->object_data;
 140         for (i = 0; i < wco->obj_methods->count; ++i)
 141                 if (!strcmp(wco->obj_methods->method[i].name, name)) {
 142                         if (in) dcom_IWbemClassObject_from_WbemClassObject(d->ctx, in, wco->obj_methods->method[i].in);
 143                         if (out) dcom_IWbemClassObject_from_WbemClassObject(d->ctx, out, wco->obj_methods->method[i].out);
 144                         return WERR_OK;
 145                 }
 146         return WERR_NOT_FOUND;
 147 }
 148
 149 void IWbemClassObject_CreateInstance(struct IWbemClassObject *wco)
 150 {
 151         uint32_t i;
 152
 153         wco->instance = talloc_zero(wco, struct WbemInstance);
 154         wco->instance->default_flags = talloc_array(wco->instance, uint8_t, wco->obj_class->__PROPERTY_COUNT);
 155         wco->instance->data = talloc_array(wco->instance, union CIMVAR, wco->obj_class->__PROPERTY_COUNT);
 156         memset(wco->instance->data, 0, sizeof(union CIMVAR) * wco->obj_class->__PROPERTY_COUNT);
 157         for (i = 0; i < wco->obj_class->__PROPERTY_COUNT; ++i) {
 158                 wco->instance->default_flags[i] = 1; /* FIXME:high resolve this magic */
 159         }
 160         wco->instance->__CLASS = wco->obj_class->__CLASS;
 161         wco->instance->u2_4 = 4;
 162         wco->instance->u3_1 = 1;
 163 }
 164
 165 WERROR IWbemClassObject_Clone(struct IWbemClassObject *d, TALLOC_CTX *mem_ctx, struct IWbemClassObject **copy)
 166 {
 167         return WERR_NOT_SUPPORTED;
 168 }
 169
 170 WERROR IWbemClassObject_SpawnInstance(struct IWbemClassObject *d, TALLOC_CTX *mem_ctx, uint32_t flags, struct IWbemClassObject **instance)
 171 {
 172         struct IWbemClassObject *wco, *nwco;
 173
 174         wco = (struct IWbemClassObject *)d->object_data;
 175         nwco = talloc_zero(mem_ctx, struct IWbemClassObject);
 176         nwco->flags = WCF_INSTANCE;
 177         nwco->obj_class = wco->obj_class;
 178         IWbemClassObject_CreateInstance(nwco);
 179         dcom_IWbemClassObject_from_WbemClassObject(d->ctx, instance, nwco);
 180         return WERR_OK;
 181 }
 182
 183 WERROR IWbemClassObject_Get(struct IWbemClassObject *d, TALLOC_CTX *mem_ctx, const char *name, uint32_t flags, union CIMVAR *val, enum CIMTYPE_ENUMERATION *cimtype, uint32_t *flavor)
 184 {
 185         uint32_t i;
 186         for (i = 0; i < d->obj_class->__PROPERTY_COUNT; ++i) {
 187                 if (!strcmp(d->obj_class->properties[i].property.name, name)) {
 188                         duplicate_CIMVAR(mem_ctx, &d->instance->data[i], val, d->obj_class->properties[i].property.desc->cimtype);
 189                         if (cimtype != NULL)
 190                                 *cimtype = d->obj_class->properties[i].property.desc->cimtype;
 191                         if (flavor != NULL)
 192                                 *flavor = 0; /* FIXME:avg implement flavor */
 193                         return WERR_OK;
 194                 }
 195         }
 196         return WERR_NOT_FOUND;
 197 }
 198
 199 WERROR IWbemClassObject_Put(struct IWbemClassObject *d, TALLOC_CTX *mem_ctx, const char *name, uint32_t flags, union CIMVAR *val, enum CIMTYPE_ENUMERATION cimtype)
 200 {
 201         struct IWbemClassObject *wco;
 202         uint32_t i;
 203
 204         wco = (struct IWbemClassObject *)d->object_data;
 205         for (i = 0; i < wco->obj_class->__PROPERTY_COUNT; ++i) {
 206                 if (!strcmp(wco->obj_class->properties[i].property.name, name)) {
 207                         if (cimtype && cimtype != wco->obj_class->properties[i].property.desc->cimtype) return WERR_INVALID_PARAM;
 208                         wco->instance->default_flags[i] = 0;
 209                         duplicate_CIMVAR(wco->instance, val, &wco->instance->data[i], wco->obj_class->properties[i].property.desc->cimtype);
 210                         return WERR_OK;
 211                 }
 212         }
 213         return WERR_NOT_FOUND;
 214 }
 215
 216 #define WERR_CHECK(msg) if (!W_ERROR_IS_OK(result)) { \
 217                               DEBUG(1, ("ERROR: %s - %s\n", msg, wmi_errstr(result))); \
 218         return result; \
 219                           } else { \
 220                               DEBUG(1, ("OK   : %s\n", msg)); \
 221                           }
 222
 223 struct pair_guid_ptr {
 224         struct GUID guid;
 225         void *ptr;
 226         struct pair_guid_ptr *next, *prev;
 227 };
 228
 229 static void *get_ptr_by_guid(struct pair_guid_ptr *list, struct GUID *uuid)
 230 {
 231         for (; list; list = list->next) {
 232                 if (GUID_equal(&list->guid, uuid))
 233                                 return list->ptr;
 234         }
 235         return NULL;
 236 }
 237
 238 static void add_pair_guid_ptr(TALLOC_CTX *mem_ctx, struct pair_guid_ptr **list, struct GUID *uuid, void *ptr)
 239 {
 240         struct pair_guid_ptr *e;
 241
 242         e = talloc(mem_ctx, struct pair_guid_ptr);
 243         e->guid = *uuid;
 244         e->ptr = ptr;
 245         talloc_steal(e, ptr);
 246         DLIST_ADD(*list, e);
 247 }
 248
 249 struct IEnumWbemClassObject_data {
 250         struct GUID guid;
 251         struct IWbemFetchSmartEnum *pFSE;
 252         struct IWbemWCOSmartEnum *pSE;
 253         struct pair_guid_ptr *cache;
 254 };
 255 #define NDR_CHECK_EXPR(expr) do { if (!(expr)) {\
 256                                         DEBUG(0, ("%s(%d): WBEMDATA_ERR(0x%08X): Error parsing(%s)\n", __FILE__, __LINE__, ndr->offset, #expr)); \
 257                                         return NDR_ERR_VALIDATE; \
 258                                         } \
 259                                     } while(0)
 260
 261 #define NDR_CHECK_CONST(val, exp) NDR_CHECK_EXPR((val) == (exp))
 262
 263
 264 static enum ndr_err_code WBEMDATA_Parse(TALLOC_CTX *mem_ctx, uint8_t *data, uint32_t size, struct IEnumWbemClassObject *d, uint32_t uCount, struct IWbemClassObject **apObjects)
 265 {
 266         struct ndr_pull *ndr;
 267         uint32_t u, i, ofs_next;
 268         uint8_t u8, datatype;
 269         struct GUID guid;
 270         struct IEnumWbemClassObject_data *ecod;
 271
 272         if (!uCount)
 273                 return NDR_ERR_BAD_SWITCH;
 274
 275         ecod = d->object_data;
 276
 277         ndr = talloc_zero(mem_ctx, struct ndr_pull);
 278         ndr->current_mem_ctx = d->ctx;
 279         ndr->data = data;
 280         ndr->data_size = size;
 281         ndr_set_flags(&ndr->flags, LIBNDR_FLAG_NOALIGN);
 282
 283         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 284         NDR_CHECK_CONST(u, 0x0);
 285         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 286         NDR_CHECK_CONST(u, *(const uint32_t *)"WBEM");
 287         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 288         NDR_CHECK_CONST(u, *(const uint32_t *)"DATA");
 289         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 290         NDR_CHECK_CONST(u, 0x1A); /* Length of header */
 291         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 292         NDR_PULL_NEED_BYTES(ndr, u + 6);
 293         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 294         NDR_CHECK_CONST(u, 0x0);
 295         NDR_CHECK(ndr_pull_uint8(ndr, NDR_SCALARS, &u8));
 296         NDR_CHECK_CONST(u8, 0x01); /* Major Version */
 297         NDR_CHECK(ndr_pull_uint8(ndr, NDR_SCALARS, &u8));
 298         NDR_CHECK_EXPR(u8 <= 1); /* Minor Version 0 - Win2000, 1 - XP/2003 */
 299         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 300         NDR_CHECK_CONST(u, 0x8); /* Length of header */
 301         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 302         NDR_PULL_NEED_BYTES(ndr, u);
 303         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 304         NDR_CHECK_CONST(u, 0xC); /* Length of header */
 305         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 306         NDR_PULL_NEED_BYTES(ndr, u + 4);
 307         NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 308         NDR_CHECK_CONST(u, uCount);
 309         for (i = 0; i < uCount; ++i) {
 310                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 311                 NDR_CHECK_CONST(u, 0x9); /* Length of header */
 312                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 313                 NDR_PULL_NEED_BYTES(ndr, u + 1);
 314                 NDR_CHECK(ndr_pull_uint8(ndr, NDR_SCALARS, &datatype));
 315                 ofs_next = ndr->offset + u;
 316                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 317                 NDR_CHECK_CONST(u, 0x18); /* Length of header */
 318                 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &u));
 319                 NDR_PULL_NEED_BYTES(ndr, u + 16);
 320                 NDR_CHECK(ndr_pull_GUID(ndr, NDR_SCALARS, &guid));
 321                 switch (datatype) {
 322                 case DATATYPE_CLASSOBJECT:
 323                         apObjects[i] = talloc_zero(d->ctx, struct IWbemClassObject);
 324                         ndr->current_mem_ctx = apObjects[i];
 325                         NDR_CHECK(ndr_pull_WbemClassObject(ndr, NDR_SCALARS|NDR_BUFFERS, apObjects[i]));
 326                         ndr->current_mem_ctx = d->ctx;
 327                         add_pair_guid_ptr(ecod, &ecod->cache, &guid, apObjects[i]->obj_class);
 328                         break;
 329                 case DATATYPE_OBJECT:
 330                         apObjects[i] = talloc_zero(d->ctx, struct IWbemClassObject);
 331                         apObjects[i]->obj_class = get_ptr_by_guid(ecod->cache, &guid);
 332                         (void)talloc_reference(apObjects[i], apObjects[i]->obj_class);
 333                         ndr->current_mem_ctx = apObjects[i];
 334                         NDR_CHECK(ndr_pull_WbemClassObject_Object(ndr, NDR_SCALARS|NDR_BUFFERS, apObjects[i]));
 335                         ndr->current_mem_ctx = d->ctx;
 336                         break;
 337                 default:
 338                         DEBUG(0, ("WBEMDATA_Parse: Data type %d not supported\n", datatype));
 339                         return NDR_ERR_BAD_SWITCH;
 340                 }
 341                 ndr->offset = ofs_next;
 342                 if (DEBUGLVL(9)) {
 343                         NDR_PRINT_DEBUG(IWbemClassObject, apObjects[i]);
 344                 }
 345         }
 346         return NDR_ERR_SUCCESS;
 347 }
 348
 349 WERROR IEnumWbemClassObject_SmartNext(struct IEnumWbemClassObject *d, TALLOC_CTX *mem_ctx, int32_t lTimeout, uint32_t uCount, struct IWbemClassObject **apObjects, uint32_t *puReturned)
 350 {
 351         WERROR result;
 352         NTSTATUS status;
 353         struct IEnumWbemClassObject_data *ecod;
 354         TALLOC_CTX *loc_ctx;
 355         uint32_t size;
 356         uint8_t *data;
 357
 358         loc_ctx = talloc_new(0);
 359         ecod = d->object_data;
 360         if (!ecod) {
 361                 struct GUID iid;
 362                 WERROR coresult;
 363
 364                 d->object_data = ecod = talloc_zero(d, struct IEnumWbemClassObject_data);
 365                 GUID_from_string(COM_IWBEMFETCHSMARTENUM_UUID, &iid);
 366                 result = dcom_query_interface((struct IUnknown *)d, 5, 1, &iid, (struct IUnknown **)&ecod->pFSE, &coresult);
 367                 WERR_CHECK("dcom_query_interface.");
 368                 result = coresult;
 369                 WERR_CHECK("Retrieve enumerator of result(IWbemFetchSmartEnum).");
 370
 371                 result = IWbemFetchSmartEnum_Fetch(ecod->pFSE, mem_ctx, &ecod->pSE);
 372                 WERR_CHECK("Retrieve enumerator of result(IWbemWCOSmartEnum).");
 373
 374                 ecod->guid = GUID_random();
 375                 d->vtable->Release_send = dcom_proxy_IEnumWbemClassObject_Release_send;
 376         }
 377
 378         result = IWbemWCOSmartEnum_Next(ecod->pSE, loc_ctx, &ecod->guid, lTimeout, uCount, puReturned, &size, &data);
 379         if (!W_ERROR_EQUAL(result, WERR_BADFUNC)) {
 380                 WERR_CHECK("IWbemWCOSmartEnum_Next.");
 381         }
 382
 383         if (data) {
 384                 NDR_CHECK(WBEMDATA_Parse(mem_ctx, data, size, d, *puReturned, apObjects));
 385         }
 386         if (!W_ERROR_IS_OK(result)) {
 387                 status = werror_to_ntstatus(result);
 388                 DEBUG(9, ("dcom_proxy_IEnumWbemClassObject_Next: %s - %s\n", nt_errstr(status), get_friendly_nt_error_msg(status)));
 389         }
 390         talloc_free(loc_ctx);
 391         return result;
 392 }
 393
 394 struct composite_context *dcom_proxy_IEnumWbemClassObject_Release_send(struct IUnknown *d, TALLOC_CTX *mem_ctx)
 395 {
 396         struct composite_context *c, *cr;
 397         struct REMINTERFACEREF iref[3];
 398         struct dcom_object_exporter *ox;
 399         struct IEnumWbemClassObject_data *ecod;
 400         int n;
 401
 402         c = composite_create(d->ctx, d->ctx->event_ctx);
 403         if (c == NULL) return NULL;
 404         c->private_data = d;
 405
 406         ox = object_exporter_by_ip(d->ctx, d);
 407         iref[0].ipid = IUnknown_ipid(d);
 408         iref[0].cPublicRefs = 5;
 409         iref[0].cPrivateRefs = 0;
 410         n = 1;
 411
 412         ecod = d->object_data;
 413         if (ecod) {
 414                 if (ecod->pFSE) {
 415                         talloc_steal(d, ecod->pFSE);
 416                         iref[n].ipid = IUnknown_ipid(ecod->pFSE);
 417                         iref[n].cPublicRefs = 5;
 418                         iref[n].cPrivateRefs = 0;
 419                         ++n;
 420                 }
 421                 if (ecod->pSE) {
 422                         talloc_steal(d, ecod->pSE);
 423                         iref[n].ipid = IUnknown_ipid(ecod->pSE);
 424                         iref[n].cPublicRefs = 5;
 425                         iref[n].cPrivateRefs = 0;
 426                         ++n;
 427                 }
 428         }
 429         cr = IRemUnknown_RemRelease_send(ox->rem_unknown, mem_ctx, n, iref);
 430
 431         composite_continue(c, cr, dcom_release_continue, c);
 432         return c;
 433 }
 434
 435 NTSTATUS dcom_proxy_IWbemClassObject_init(void)
 436 {
 437         struct GUID clsid;
 438         GUID_from_string("4590f812-1d3a-11d0-891f-00aa004b2e24", &clsid);
 439         dcom_register_marshal(&clsid, marshal, unmarshal);
 440
 441 #if 0
 442         struct IEnumWbemClassObject_vtable *proxy_vtable;
 443         proxy_vtable = (struct IEnumWbemClassObject_vtable *)dcom_proxy_vtable_by_iid((struct GUID *)&dcerpc_table_IEnumWbemClassObject.syntax_id.uuid);
 444         if (proxy_vtable)
 445                 proxy_vtable->Release_send = dcom_proxy_IEnumWbemClassObject_Release_send;
 446         else
 447                 DEBUG(0, ("WARNING: IEnumWbemClassObject should be initialized before IWbemClassObject."));
 448 #endif
 449
 450         return NT_STATUS_OK;
 451 }