source4/libnet/groupinfo.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Rafal Szczesniak 2007
   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 3 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, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 /*
  21   a composite function for getting group information via samr pipe
  22 */
  23
  24
  25 #include "includes.h"
  26 #include "libcli/composite/composite.h"
  27 #include "libnet/composite.h"
  28 #include "librpc/gen_ndr/security.h"
  29 #include "libcli/security/security.h"
  30 #include "libnet/userman.h"
  31 #include "libnet/groupinfo.h"
  32 #include "librpc/gen_ndr/ndr_samr_c.h"
  33 #include "libnet/libnet_proto.h"
  34
  35
  36 struct groupinfo_state {
  37         struct dcerpc_pipe         *pipe;
  38         struct policy_handle       domain_handle;
  39         struct policy_handle       group_handle;
  40         uint16_t                   level;
  41         struct samr_LookupNames    lookup;
  42         struct samr_OpenGroup      opengroup;
  43         struct samr_QueryGroupInfo querygroupinfo;
  44         struct samr_Close          samrclose;
  45         union  samr_GroupInfo      *info;
  46
  47         /* information about the progress */
  48         void (*monitor_fn)(struct monitor_msg *);
  49 };
  50
  51
  52 static void continue_groupinfo_lookup(struct rpc_request *req);
  53 static void continue_groupinfo_opengroup(struct rpc_request *req);
  54 static void continue_groupinfo_getgroup(struct rpc_request *req);
  55 static void continue_groupinfo_closegroup(struct rpc_request *req);
  56
  57
  58 /**
  59  * Stage 1 (optional): Look for a group name in SAM server.
  60  */
  61 static void continue_groupinfo_lookup(struct rpc_request *req)
  62 {
  63         struct composite_context *c;
  64         struct groupinfo_state *s;
  65         struct rpc_request *opengroup_req;
  66         struct monitor_msg msg;
  67         struct msg_rpc_lookup_name *msg_lookup;
  68
  69         c = talloc_get_type(req->async.private_data, struct composite_context);
  70         s = talloc_get_type(c->private_data, struct groupinfo_state);
  71
  72         /* receive samr_Lookup reply */
  73         c->status = dcerpc_ndr_request_recv(req);
  74         if (!composite_is_ok(c)) return;
  75
  76         /* there could be a problem with name resolving itself */
  77         if (!NT_STATUS_IS_OK(s->lookup.out.result)) {
  78                 composite_error(c, s->lookup.out.result);
  79                 return;
  80         }
  81
  82         /* issue a monitor message */
  83         if (s->monitor_fn) {
  84                 msg.type = mon_SamrLookupName;
  85                 msg_lookup = talloc(s, struct msg_rpc_lookup_name);
  86                 msg_lookup->rid = s->lookup.out.rids->ids;
  87                 msg_lookup->count = s->lookup.out.rids->count;
  88                 msg.data = (void*)msg_lookup;
  89                 msg.data_size = sizeof(*msg_lookup);
  90
  91                 s->monitor_fn(&msg);
  92         }
  93
  94
  95         /* have we actually got name resolved
  96            - we're looking for only one at the moment */
  97         if (s->lookup.out.rids->count == 0) {
  98                 composite_error(c, NT_STATUS_NO_SUCH_USER);
  99         }
 100
 101         /* TODO: find proper status code for more than one rid found */
 102
 103         /* prepare parameters for LookupNames */
 104         s->opengroup.in.domain_handle   = &s->domain_handle;
 105         s->opengroup.in.access_mask     = SEC_FLAG_MAXIMUM_ALLOWED;
 106         s->opengroup.in.rid             = s->lookup.out.rids->ids[0];
 107         s->opengroup.out.group_handle   = &s->group_handle;
 108
 109         /* send request */
 110         opengroup_req = dcerpc_samr_OpenGroup_send(s->pipe, c, &s->opengroup);
 111         if (composite_nomem(opengroup_req, c)) return;
 112
 113         composite_continue_rpc(c, opengroup_req, continue_groupinfo_opengroup, c);
 114 }
 115
 116
 117 /**
 118  * Stage 2: Open group policy handle.
 119  */
 120 static void continue_groupinfo_opengroup(struct rpc_request *req)
 121 {
 122         struct composite_context *c;
 123         struct groupinfo_state *s;
 124         struct rpc_request *querygroup_req;
 125         struct monitor_msg msg;
 126         struct msg_rpc_open_group *msg_open;
 127
 128         c = talloc_get_type(req->async.private_data, struct composite_context);
 129         s = talloc_get_type(c->private_data, struct groupinfo_state);
 130
 131         /* receive samr_OpenGroup reply */
 132         c->status = dcerpc_ndr_request_recv(req);
 133         if (!composite_is_ok(c)) return;
 134
 135         if (!NT_STATUS_IS_OK(s->querygroupinfo.out.result)) {
 136                 composite_error(c, s->querygroupinfo.out.result);
 137                 return;
 138         }
 139
 140         /* issue a monitor message */
 141         if (s->monitor_fn) {
 142                 msg.type = mon_SamrOpenGroup;
 143                 msg_open = talloc(s, struct msg_rpc_open_group);
 144                 msg_open->rid = s->opengroup.in.rid;
 145                 msg_open->access_mask = s->opengroup.in.access_mask;
 146                 msg.data = (void*)msg_open;
 147                 msg.data_size = sizeof(*msg_open);
 148
 149                 s->monitor_fn(&msg);
 150         }
 151
 152         /* prepare parameters for QueryGroupInfo call */
 153         s->querygroupinfo.in.group_handle = &s->group_handle;
 154         s->querygroupinfo.in.level        = s->level;
 155         s->querygroupinfo.out.info        = talloc(s, union samr_GroupInfo *);
 156         if (composite_nomem(s->querygroupinfo.out.info, c)) return;
 157
 158         /* queue rpc call, set event handling and new state */
 159         querygroup_req = dcerpc_samr_QueryGroupInfo_send(s->pipe, c, &s->querygroupinfo);
 160         if (composite_nomem(querygroup_req, c)) return;
 161
 162         composite_continue_rpc(c, querygroup_req, continue_groupinfo_getgroup, c);
 163 }
 164
 165
 166 /**
 167  * Stage 3: Get requested group information.
 168  */
 169 static void continue_groupinfo_getgroup(struct rpc_request *req)
 170 {
 171         struct composite_context *c;
 172         struct groupinfo_state *s;
 173         struct rpc_request *close_req;
 174         struct monitor_msg msg;
 175         struct msg_rpc_query_group *msg_query;
 176
 177         c = talloc_get_type(req->async.private_data, struct composite_context);
 178         s = talloc_get_type(c->private_data, struct groupinfo_state);
 179
 180         /* receive samr_QueryGroupInfo reply */
 181         c->status = dcerpc_ndr_request_recv(req);
 182         if (!composite_is_ok(c)) return;
 183
 184         /* check if querygroup itself went ok */
 185         if (!NT_STATUS_IS_OK(s->querygroupinfo.out.result)) {
 186                 composite_error(c, s->querygroupinfo.out.result);
 187                 return;
 188         }
 189
 190         s->info = talloc_steal(s, *s->querygroupinfo.out.info);
 191
 192         /* issue a monitor message */
 193         if (s->monitor_fn) {
 194                 msg.type = mon_SamrQueryGroup;
 195                 msg_query = talloc(s, struct msg_rpc_query_group);
 196                 msg_query->level = s->querygroupinfo.in.level;
 197                 msg.data = (void*)msg_query;
 198                 msg.data_size = sizeof(*msg_query);
 199
 200                 s->monitor_fn(&msg);
 201         }
 202
 203         /* prepare arguments for Close call */
 204         s->samrclose.in.handle  = &s->group_handle;
 205         s->samrclose.out.handle = &s->group_handle;
 206
 207         /* queue rpc call, set event handling and new state */
 208         close_req = dcerpc_samr_Close_send(s->pipe, c, &s->samrclose);
 209         if (composite_nomem(close_req, c)) return;
 210
 211         composite_continue_rpc(c, close_req, continue_groupinfo_closegroup, c);
 212 }
 213
 214
 215 /**
 216  * Stage 4: Close policy handle associated with opened group.
 217  */
 218 static void continue_groupinfo_closegroup(struct rpc_request *req)
 219 {
 220         struct composite_context *c;
 221         struct groupinfo_state *s;
 222         struct monitor_msg msg;
 223         struct msg_rpc_close_group *msg_close;
 224
 225         c = talloc_get_type(req->async.private_data, struct composite_context);
 226         s = talloc_get_type(c->private_data, struct groupinfo_state);
 227
 228         /* receive samr_Close reply */
 229         c->status = dcerpc_ndr_request_recv(req);
 230         if (!composite_is_ok(c)) return;
 231
 232         if (!NT_STATUS_IS_OK(s->samrclose.out.result)) {
 233                 composite_error(c, s->samrclose.out.result);
 234                 return;
 235         }
 236
 237         /* issue a monitor message */
 238         if (s->monitor_fn) {
 239                 msg.type = mon_SamrClose;
 240                 msg_close = talloc(s, struct msg_rpc_close_group);
 241                 msg_close->rid = s->opengroup.in.rid;
 242                 msg.data = (void*)msg_close;
 243                 msg.data_size = sizeof(*msg_close);
 244
 245                 s->monitor_fn(&msg);
 246         }
 247
 248         composite_done(c);
 249 }
 250
 251
 252 /**
 253  * Sends asynchronous groupinfo request
 254  *
 255  * @param p dce/rpc call pipe
 256  * @param io arguments and results of the call
 257  */
 258 struct composite_context *libnet_rpc_groupinfo_send(struct dcerpc_pipe *p,
 259                                                     struct libnet_rpc_groupinfo *io,
 260                                                     void (*monitor)(struct monitor_msg*))
 261 {
 262         struct composite_context *c;
 263         struct groupinfo_state *s;
 264         struct dom_sid *sid;
 265         struct rpc_request *opengroup_req, *lookup_req;
 266
 267         if (!p || !io) return NULL;
 268
 269         c = composite_create(p, dcerpc_event_context(p));
 270         if (c == NULL) return c;
 271
 272         s = talloc_zero(c, struct groupinfo_state);
 273         if (composite_nomem(s, c)) return c;
 274
 275         c->private_data = s;
 276
 277         s->level         = io->in.level;
 278         s->pipe          = p;
 279         s->domain_handle = io->in.domain_handle;
 280         s->monitor_fn    = monitor;
 281
 282         if (io->in.sid) {
 283                 sid = dom_sid_parse_talloc(s, io->in.sid);
 284                 if (composite_nomem(sid, c)) return c;
 285
 286                 s->opengroup.in.domain_handle  = &s->domain_handle;
 287                 s->opengroup.in.access_mask    = SEC_FLAG_MAXIMUM_ALLOWED;
 288                 s->opengroup.in.rid            = sid->sub_auths[sid->num_auths - 1];
 289                 s->opengroup.out.group_handle  = &s->group_handle;
 290
 291                 /* send request */
 292                 opengroup_req = dcerpc_samr_OpenGroup_send(p, c, &s->opengroup);
 293                 if (composite_nomem(opengroup_req, c)) return c;
 294
 295                 composite_continue_rpc(c, opengroup_req, continue_groupinfo_opengroup, c);
 296
 297         } else {
 298                 /* preparing parameters to send rpc request */
 299                 s->lookup.in.domain_handle    = &s->domain_handle;
 300                 s->lookup.in.num_names        = 1;
 301                 s->lookup.in.names            = talloc_array(s, struct lsa_String, 1);
 302                 if (composite_nomem(s->lookup.in.names, c)) return c;
 303
 304                 s->lookup.in.names[0].string  = talloc_strdup(s, io->in.groupname);
 305                 if (composite_nomem(s->lookup.in.names[0].string, c)) return c;
 306                 s->lookup.out.rids         = talloc_zero(s, struct samr_Ids);
 307                 s->lookup.out.types        = talloc_zero(s, struct samr_Ids);
 308                 if (composite_nomem(s->lookup.out.rids, c)) return c;
 309                 if (composite_nomem(s->lookup.out.types, c)) return c;
 310
 311                 /* send request */
 312                 lookup_req = dcerpc_samr_LookupNames_send(p, c, &s->lookup);
 313                 if (composite_nomem(lookup_req, c)) return c;
 314
 315                 composite_continue_rpc(c, lookup_req, continue_groupinfo_lookup, c);
 316         }
 317
 318         return c;
 319 }
 320
 321
 322 /**
 323  * Waits for and receives result of asynchronous groupinfo call
 324  *
 325  * @param c composite context returned by asynchronous groupinfo call
 326  * @param mem_ctx memory context of the call
 327  * @param io pointer to results (and arguments) of the call
 328  * @return nt status code of execution
 329  */
 330
 331 NTSTATUS libnet_rpc_groupinfo_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
 332                                    struct libnet_rpc_groupinfo *io)
 333 {
 334         NTSTATUS status;
 335         struct groupinfo_state *s;
 336
 337         /* wait for results of sending request */
 338         status = composite_wait(c);
 339
 340         if (NT_STATUS_IS_OK(status) && io) {
 341                 s = talloc_get_type(c->private_data, struct groupinfo_state);
 342                 talloc_steal(mem_ctx, s->info);
 343                 io->out.info = *s->info;
 344         }
 345
 346         /* memory context associated to composite context is no longer needed */
 347         talloc_free(c);
 348         return status;
 349 }
 350
 351
 352 /**
 353  * Synchronous version of groupinfo call
 354  *
 355  * @param pipe dce/rpc call pipe
 356  * @param mem_ctx memory context for the call
 357  * @param io arguments and results of the call
 358  * @return nt status code of execution
 359  */
 360
 361 NTSTATUS libnet_rpc_groupinfo(struct dcerpc_pipe *p,
 362                               TALLOC_CTX *mem_ctx,
 363                               struct libnet_rpc_groupinfo *io)
 364 {
 365         struct composite_context *c = libnet_rpc_groupinfo_send(p, io, NULL);
 366         return libnet_rpc_groupinfo_recv(c, mem_ctx, io);
 367 }