source4/libnet/userinfo.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Rafal Szczesniak 2005
   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 user information via samr pipe
  22 */
  23
  24 #include "includes.h"
  25 #include "libcli/composite/composite.h"
  26 #include "libnet/composite.h"
  27 #include "librpc/gen_ndr/security.h"
  28 #include "libcli/security/security.h"
  29 #include "libnet/userman.h"
  30 #include "libnet/userinfo.h"
  31 #include "librpc/gen_ndr/ndr_samr_c.h"
  32 #include "libnet/libnet_proto.h"
  33
  34
  35 struct userinfo_state {
  36         struct dcerpc_pipe        *pipe;
  37         struct policy_handle      domain_handle;
  38         struct policy_handle      user_handle;
  39         uint16_t                  level;
  40         struct samr_LookupNames   lookup;
  41         struct samr_OpenUser      openuser;
  42         struct samr_QueryUserInfo queryuserinfo;
  43         struct samr_Close         samrclose;
  44         union  samr_UserInfo      *info;
  45
  46         /* information about the progress */
  47         void (*monitor_fn)(struct monitor_msg *);
  48 };
  49
  50
  51 static void continue_userinfo_lookup(struct rpc_request *req);
  52 static void continue_userinfo_openuser(struct rpc_request *req);
  53 static void continue_userinfo_getuser(struct rpc_request *req);
  54 static void continue_userinfo_closeuser(struct rpc_request *req);
  55
  56
  57 /**
  58  * Stage 1 (optional): Look for a username in SAM server.
  59  */
  60 static void continue_userinfo_lookup(struct rpc_request *req)
  61 {
  62         struct composite_context *c;
  63         struct userinfo_state *s;
  64         struct rpc_request *openuser_req;
  65         struct monitor_msg msg;
  66         struct msg_rpc_lookup_name *msg_lookup;
  67
  68         c = talloc_get_type(req->async.private_data, struct composite_context);
  69         s = talloc_get_type(c->private_data, struct userinfo_state);
  70
  71         /* receive samr_Lookup reply */
  72         c->status = dcerpc_ndr_request_recv(req);
  73         if (!composite_is_ok(c)) return;
  74
  75         /* there could be a problem with name resolving itself */
  76         if (!NT_STATUS_IS_OK(s->lookup.out.result)) {
  77                 composite_error(c, s->lookup.out.result);
  78                 return;
  79         }
  80
  81         /* issue a monitor message */
  82         if (s->monitor_fn) {
  83                 msg.type = mon_SamrLookupName;
  84                 msg_lookup = talloc(s, struct msg_rpc_lookup_name);
  85                 msg_lookup->rid = s->lookup.out.rids->ids;
  86                 msg_lookup->count = s->lookup.out.rids->count;
  87                 msg.data = (void*)msg_lookup;
  88                 msg.data_size = sizeof(*msg_lookup);
  89
  90                 s->monitor_fn(&msg);
  91         }
  92
  93
  94         /* have we actually got name resolved
  95            - we're looking for only one at the moment */
  96         if (s->lookup.out.rids->count == 0) {
  97                 composite_error(c, NT_STATUS_NO_SUCH_USER);
  98         }
  99
 100         /* TODO: find proper status code for more than one rid found */
 101
 102         /* prepare parameters for LookupNames */
 103         s->openuser.in.domain_handle  = &s->domain_handle;
 104         s->openuser.in.access_mask    = SEC_FLAG_MAXIMUM_ALLOWED;
 105         s->openuser.in.rid            = s->lookup.out.rids->ids[0];
 106         s->openuser.out.user_handle   = &s->user_handle;
 107
 108         /* send request */
 109         openuser_req = dcerpc_samr_OpenUser_send(s->pipe, c, &s->openuser);
 110         if (composite_nomem(openuser_req, c)) return;
 111
 112         composite_continue_rpc(c, openuser_req, continue_userinfo_openuser, c);
 113 }
 114
 115
 116 /**
 117  * Stage 2: Open user policy handle.
 118  */
 119 static void continue_userinfo_openuser(struct rpc_request *req)
 120 {
 121         struct composite_context *c;
 122         struct userinfo_state *s;
 123         struct rpc_request *queryuser_req;
 124         struct monitor_msg msg;
 125         struct msg_rpc_open_user *msg_open;
 126
 127         c = talloc_get_type(req->async.private_data, struct composite_context);
 128         s = talloc_get_type(c->private_data, struct userinfo_state);
 129
 130         /* receive samr_OpenUser reply */
 131         c->status = dcerpc_ndr_request_recv(req);
 132         if (!composite_is_ok(c)) return;
 133
 134         if (!NT_STATUS_IS_OK(s->queryuserinfo.out.result)) {
 135                 composite_error(c, s->queryuserinfo.out.result);
 136                 return;
 137         }
 138
 139         /* issue a monitor message */
 140         if (s->monitor_fn) {
 141                 msg.type = mon_SamrOpenUser;
 142                 msg_open = talloc(s, struct msg_rpc_open_user);
 143                 msg_open->rid = s->openuser.in.rid;
 144                 msg_open->access_mask = s->openuser.in.access_mask;
 145                 msg.data = (void*)msg_open;
 146                 msg.data_size = sizeof(*msg_open);
 147
 148                 s->monitor_fn(&msg);
 149         }
 150
 151         /* prepare parameters for QueryUserInfo call */
 152         s->queryuserinfo.in.user_handle = &s->user_handle;
 153         s->queryuserinfo.in.level       = s->level;
 154         s->queryuserinfo.out.info       = talloc(s, union samr_UserInfo *);
 155         if (composite_nomem(s->queryuserinfo.out.info, c)) return;
 156
 157         /* queue rpc call, set event handling and new state */
 158         queryuser_req = dcerpc_samr_QueryUserInfo_send(s->pipe, c, &s->queryuserinfo);
 159         if (composite_nomem(queryuser_req, c)) return;
 160
 161         composite_continue_rpc(c, queryuser_req, continue_userinfo_getuser, c);
 162 }
 163
 164
 165 /**
 166  * Stage 3: Get requested user information.
 167  */
 168 static void continue_userinfo_getuser(struct rpc_request *req)
 169 {
 170         struct composite_context *c;
 171         struct userinfo_state *s;
 172         struct rpc_request *close_req;
 173         struct monitor_msg msg;
 174         struct msg_rpc_query_user *msg_query;
 175
 176         c = talloc_get_type(req->async.private_data, struct composite_context);
 177         s = talloc_get_type(c->private_data, struct userinfo_state);
 178
 179         /* receive samr_QueryUserInfo reply */
 180         c->status = dcerpc_ndr_request_recv(req);
 181         if (!composite_is_ok(c)) return;
 182
 183         /* check if queryuser itself went ok */
 184         if (!NT_STATUS_IS_OK(s->queryuserinfo.out.result)) {
 185                 composite_error(c, s->queryuserinfo.out.result);
 186                 return;
 187         }
 188
 189         s->info = talloc_steal(s, *(s->queryuserinfo.out.info));
 190
 191         /* issue a monitor message */
 192         if (s->monitor_fn) {
 193                 msg.type = mon_SamrQueryUser;
 194                 msg_query = talloc(s, struct msg_rpc_query_user);
 195                 msg_query->level = s->queryuserinfo.in.level;
 196                 msg.data = (void*)msg_query;
 197                 msg.data_size = sizeof(*msg_query);
 198
 199                 s->monitor_fn(&msg);
 200         }
 201
 202         /* prepare arguments for Close call */
 203         s->samrclose.in.handle  = &s->user_handle;
 204         s->samrclose.out.handle = &s->user_handle;
 205
 206         /* queue rpc call, set event handling and new state */
 207         close_req = dcerpc_samr_Close_send(s->pipe, c, &s->samrclose);
 208         if (composite_nomem(close_req, c)) return;
 209
 210         composite_continue_rpc(c, close_req, continue_userinfo_closeuser, c);
 211 }
 212
 213
 214 /**
 215  * Stage 4: Close policy handle associated with opened user.
 216  */
 217 static void continue_userinfo_closeuser(struct rpc_request *req)
 218 {
 219         struct composite_context *c;
 220         struct userinfo_state *s;
 221         struct monitor_msg msg;
 222         struct msg_rpc_close_user *msg_close;
 223
 224         c = talloc_get_type(req->async.private_data, struct composite_context);
 225         s = talloc_get_type(c->private_data, struct userinfo_state);
 226
 227         /* receive samr_Close reply */
 228         c->status = dcerpc_ndr_request_recv(req);
 229         if (!composite_is_ok(c)) return;
 230
 231         if (!NT_STATUS_IS_OK(s->samrclose.out.result)) {
 232                 composite_error(c, s->samrclose.out.result);
 233                 return;
 234         }
 235
 236         /* issue a monitor message */
 237         if (s->monitor_fn) {
 238                 msg.type = mon_SamrClose;
 239                 msg_close = talloc(s, struct msg_rpc_close_user);
 240                 msg_close->rid = s->openuser.in.rid;
 241                 msg.data = (void*)msg_close;
 242                 msg.data_size = sizeof(*msg_close);
 243
 244                 s->monitor_fn(&msg);
 245         }
 246
 247         composite_done(c);
 248 }
 249
 250
 251 /**
 252  * Sends asynchronous userinfo request
 253  *
 254  * @param p dce/rpc call pipe
 255  * @param io arguments and results of the call
 256  */
 257 struct composite_context *libnet_rpc_userinfo_send(struct dcerpc_pipe *p,
 258                                                    struct libnet_rpc_userinfo *io,
 259                                                    void (*monitor)(struct monitor_msg*))
 260 {
 261         struct composite_context *c;
 262         struct userinfo_state *s;
 263         struct dom_sid *sid;
 264         struct rpc_request *openuser_req, *lookup_req;
 265
 266         if (!p || !io) return NULL;
 267
 268         c = composite_create(p, dcerpc_event_context(p));
 269         if (c == NULL) return c;
 270
 271         s = talloc_zero(c, struct userinfo_state);
 272         if (composite_nomem(s, c)) return c;
 273
 274         c->private_data = s;
 275
 276         s->level         = io->in.level;
 277         s->pipe          = p;
 278         s->domain_handle = io->in.domain_handle;
 279         s->monitor_fn    = monitor;
 280
 281         if (io->in.sid) {
 282                 sid = dom_sid_parse_talloc(s, io->in.sid);
 283                 if (composite_nomem(sid, c)) return c;
 284
 285                 s->openuser.in.domain_handle  = &s->domain_handle;
 286                 s->openuser.in.access_mask    = SEC_FLAG_MAXIMUM_ALLOWED;
 287                 s->openuser.in.rid            = sid->sub_auths[sid->num_auths - 1];
 288                 s->openuser.out.user_handle   = &s->user_handle;
 289
 290                 /* send request */
 291                 openuser_req = dcerpc_samr_OpenUser_send(p, c, &s->openuser);
 292                 if (composite_nomem(openuser_req, c)) return c;
 293
 294                 composite_continue_rpc(c, openuser_req, continue_userinfo_openuser, c);
 295
 296         } else {
 297                 /* preparing parameters to send rpc request */
 298                 s->lookup.in.domain_handle    = &s->domain_handle;
 299                 s->lookup.in.num_names        = 1;
 300                 s->lookup.in.names            = talloc_array(s, struct lsa_String, 1);
 301                 if (composite_nomem(s->lookup.in.names, c)) return c;
 302                 s->lookup.out.rids         = talloc_zero(s, struct samr_Ids);
 303                 s->lookup.out.types        = talloc_zero(s, struct samr_Ids);
 304                 if (composite_nomem(s->lookup.out.rids, c)) return c;
 305                 if (composite_nomem(s->lookup.out.types, c)) return c;
 306
 307                 s->lookup.in.names[0].string  = talloc_strdup(s, io->in.username);
 308                 if (composite_nomem(s->lookup.in.names[0].string, c)) return c;
 309
 310                 /* send request */
 311                 lookup_req = dcerpc_samr_LookupNames_send(p, c, &s->lookup);
 312                 if (composite_nomem(lookup_req, c)) return c;
 313
 314                 composite_continue_rpc(c, lookup_req, continue_userinfo_lookup, c);
 315         }
 316
 317         return c;
 318 }
 319
 320
 321 /**
 322  * Waits for and receives result of asynchronous userinfo call
 323  *
 324  * @param c composite context returned by asynchronous userinfo call
 325  * @param mem_ctx memory context of the call
 326  * @param io pointer to results (and arguments) of the call
 327  * @return nt status code of execution
 328  */
 329
 330 NTSTATUS libnet_rpc_userinfo_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
 331                                   struct libnet_rpc_userinfo *io)
 332 {
 333         NTSTATUS status;
 334         struct userinfo_state *s;
 335
 336         /* wait for results of sending request */
 337         status = composite_wait(c);
 338
 339         if (NT_STATUS_IS_OK(status) && io) {
 340                 s = talloc_get_type(c->private_data, struct userinfo_state);
 341                 talloc_steal(mem_ctx, s->info);
 342                 io->out.info = *s->info;
 343         }
 344
 345         /* memory context associated to composite context is no longer needed */
 346         talloc_free(c);
 347         return status;
 348 }
 349
 350
 351 /**
 352  * Synchronous version of userinfo call
 353  *
 354  * @param pipe dce/rpc call pipe
 355  * @param mem_ctx memory context for the call
 356  * @param io arguments and results of the call
 357  * @return nt status code of execution
 358  */
 359
 360 NTSTATUS libnet_rpc_userinfo(struct dcerpc_pipe *p,
 361                              TALLOC_CTX *mem_ctx,
 362                              struct libnet_rpc_userinfo *io)
 363 {
 364         struct composite_context *c = libnet_rpc_userinfo_send(p, io, NULL);
 365         return libnet_rpc_userinfo_recv(c, mem_ctx, io);
 366 }