source/rpc_client/ncacn_np_use.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    SMB client generic functions
   5    Copyright (C) Andrew Tridgell              1994-2000
   6    Copyright (C) Luke Kenneth Casson Leighton 1996-2000
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23
  24 #define NO_SYSLOG
  25
  26 #include "includes.h"
  27 #include "rpc_parse.h"
  28 #include "rpc_client.h"
  29 #include "trans2.h"
  30
  31 extern int DEBUGLEVEL;
  32 extern pstring global_myname;
  33
  34 struct ncacn_np_use
  35 {
  36         struct ncacn_np *cli;
  37         uint32 num_users;
  38 };
  39
  40 static struct ncacn_np_use **msrpcs = NULL;
  41 static uint32 num_msrpcs = 0;
  42
  43 /****************************************************************************
  44 terminate client connection
  45 ****************************************************************************/
  46 static void ncacn_np_shutdown(struct ncacn_np *cli)
  47 {
  48         struct ntuser_creds     usr;
  49         BOOL                    closed;
  50
  51         if (cli != NULL)
  52         {
  53                 if (cli->smb != NULL)
  54                 {
  55                         if (cli->smb->initialised)
  56                         {
  57                                 /* cli_nt_session_close(cli->smb, cli->fnum); JERRY */
  58                                 cli_nt_session_close(cli->smb);
  59                         }
  60                         create_ntc_from_cli_state(&usr, cli->smb);
  61                         cli_net_use_del(cli->smb->desthost, &usr, False, &closed);
  62                 }
  63         }
  64 }
  65
  66 static BOOL ncacn_np_establish_connection(struct ncacn_np *cli,
  67                                    const char *srv_name,
  68                                    const struct ntuser_creds *ntc,
  69                                    const char *pipe_name,
  70                                    BOOL reuse)
  71 {
  72         BOOL new_smb_conn;
  73         cli->smb = cli_net_use_add(srv_name, ntc,
  74                                    True, &new_smb_conn);
  75         if (cli->smb == NULL)
  76         {
  77                 return False;
  78         }
  79         /* if (!cli_nt_session_open(cli->smb, pipe_name, &cli->fnum))  by JERRY */
  80         if (!cli_nt_session_open(cli->smb, pipe_name))
  81         {
  82                 cli_net_use_del(srv_name, ntc, False, NULL);
  83                 return False;
  84         }
  85         fstrcpy(cli->pipe_name, pipe_name);
  86         return True;
  87 }
  88
  89
  90
  91 /****************************************************************************
  92 terminate client connection
  93 ****************************************************************************/
  94 static void ncacn_np_use_free(struct ncacn_np_use *cli)
  95 {
  96         if (cli->cli != NULL)
  97         {
  98                 if (cli->cli->initialised)
  99                 {
 100                         ncacn_np_shutdown(cli->cli);
 101                 }
 102                 ZERO_STRUCTP(cli->cli);
 103                 free(cli->cli);
 104         }
 105         ZERO_STRUCTP(cli);
 106         free(cli);
 107 }
 108
 109 /****************************************************************************
 110 add a client state to the array
 111 ****************************************************************************/
 112 static struct ncacn_np_use *add_ncacn_np_to_array(uint32 * len,
 113                                                   struct ncacn_np_use
 114                                                   ***array,
 115                                                   struct ncacn_np_use *cli)
 116 {
 117
 118         int i;
 119
 120         /* traverse the list and try to find a previously
 121            allocate spot that is not being used */
 122         for (i = 0; i < num_msrpcs; i++)
 123         {
 124                 if (msrpcs[i] == NULL)
 125                 {
 126                         /* found and empty spot to
 127                            store the cli pointer */
 128                         msrpcs[i] = cli;
 129                         return cli;
 130                 }
 131         }
 132
 133         return (struct ncacn_np_use *)add_item_to_array(len,
 134                                                         (void ***)array,
 135                                                         (void *)cli);
 136
 137 }
 138
 139
 140
 141 /****************************************************************************
 142 delete a client state
 143 ****************************************************************************/
 144 BOOL ncacn_np_use_del(const char *srv_name, const char *pipe_name,
 145                       const vuser_key * key,
 146                       BOOL force_close, BOOL *connection_closed)
 147 {
 148         int i;
 149         DEBUG(10, ("ncacn_np_net_use_del: %s. force close: %s ",
 150                    pipe_name, BOOLSTR(force_close)));
 151         if (key != NULL)
 152         {
 153                 DEBUG(10, ("[%d,%x]", key->pid, key->vuid));
 154         }
 155         DEBUG(10, ("\n"));
 156
 157         if (connection_closed != NULL)
 158         {
 159                 *connection_closed = False;
 160         }
 161
 162         if (strnequal("\\PIPE\\", pipe_name, 6))
 163         {
 164                 pipe_name = &pipe_name[6];
 165         }
 166
 167         if (strnequal("\\\\", srv_name, 2))
 168         {
 169                 srv_name = &srv_name[2];
 170         }
 171
 172         for (i = 0; i < num_msrpcs; i++)
 173         {
 174                 char *ncacn_np_name = NULL;
 175                 char *ncacn_np_srv_name = NULL;
 176                 struct ncacn_np_use *c = msrpcs[i];
 177                 vuser_key k;
 178
 179                 if (c == NULL || c->cli == NULL || c->cli->smb == NULL)
 180                         continue;
 181
 182                 ncacn_np_name = c->cli->pipe_name;
 183                 ncacn_np_srv_name = c->cli->smb->desthost;
 184
 185                 k = c->cli->smb->key;
 186
 187                 DEBUG(10, ("use_del[%d]: %s %s %s %s [%d,%x]\n",
 188                            i, ncacn_np_name, ncacn_np_srv_name,
 189                            c->cli->smb->user_name,
 190                            c->cli->smb->domain, k.pid, k.vuid));
 191
 192                 if (strnequal("\\PIPE\\", ncacn_np_name, 6))
 193                 {
 194                         ncacn_np_name = &ncacn_np_name[6];
 195                 }
 196                 if (!strequal(ncacn_np_name, pipe_name))
 197                 {
 198                         continue;
 199                 }
 200                 if (strnequal("\\\\", ncacn_np_srv_name, 2))
 201                 {
 202                         ncacn_np_srv_name = &ncacn_np_srv_name[2];
 203                 }
 204                 if (!strequal(ncacn_np_srv_name, srv_name))
 205                 {
 206                         continue;
 207                 }
 208                 if (key->pid != k.pid || key->vuid != k.vuid)
 209                 {
 210                         continue;
 211                 }
 212                 /* decrement number of users */
 213                 c->num_users--;
 214                 DEBUG(10, ("idx: %i num_users now: %d\n",
 215                            i, c->num_users));
 216                 if (force_close || c->num_users == 0)
 217                 {
 218                         ncacn_np_use_free(c);
 219                         msrpcs[i] = NULL;
 220                         if (connection_closed != NULL)
 221                         {
 222                                 *connection_closed = True;
 223                         }
 224                 }
 225                 return True;
 226         }
 227
 228         return False;
 229 }
 230
 231 /****************************************************************************
 232 find client state.  server name, user name, domain name and password must all
 233 match.
 234 ****************************************************************************/
 235 static struct ncacn_np_use *ncacn_np_find(const char *srv_name,
 236                                           const char *pipe_name,
 237                                           const vuser_key * key,
 238                                           const struct ntuser_creds
 239                                           *usr_creds, BOOL reuse)
 240 {
 241         int i;
 242         const char *sv_name = srv_name;
 243
 244         if (strnequal("\\PIPE\\", pipe_name, 6))
 245         {
 246                 pipe_name = &pipe_name[6];
 247         }
 248
 249         if (strnequal("\\\\", sv_name, 2))
 250         {
 251                 sv_name = &sv_name[2];
 252         }
 253
 254         if (usr_creds != NULL)
 255         {
 256                 DEBUG(10, ("ncacn_np_find: %s %s %s",
 257                            srv_name, usr_creds->user_name, usr_creds->domain));
 258         }
 259         else
 260         {
 261                 DEBUG(10,("ncacn_np_find: %s (no creds)\n", srv_name));
 262         }
 263
 264         if (key != NULL)
 265         {
 266                 DEBUG(10, ("[%d,%x]", key->pid, key->vuid));
 267         }
 268         DEBUG(10, ("\n"));
 269
 270         for (i = 0; i < num_msrpcs; i++)
 271         {
 272                 char *ncacn_np_srv_name = NULL;
 273                 struct ncacn_np_use *c = msrpcs[i];
 274                 vuser_key k;
 275
 276                 char *ncacn_np_name = NULL;
 277
 278                 if (c == NULL || c->cli == NULL || c->cli->smb == NULL ||
 279                     c->cli->smb->fd == -1 ||
 280                     !c->cli->initialised)
 281                 {
 282                         continue;
 283                 }
 284
 285                 ncacn_np_name = c->cli->pipe_name;
 286                 ncacn_np_srv_name = c->cli->smb->desthost;
 287
 288                 k = c->cli->smb->key;
 289
 290                 DEBUG(10, ("ncacn_np_find[%d]: %s %s %s %s [%d,%x]\n",
 291                            i, ncacn_np_name, ncacn_np_srv_name,
 292                            c->cli->smb->user_name,
 293                            c->cli->smb->domain, k.pid, k.vuid));
 294
 295                 if (strnequal("\\\\", ncacn_np_srv_name, 2))
 296                 {
 297                         ncacn_np_srv_name = &ncacn_np_srv_name[2];
 298                 }
 299
 300                 if (strnequal("\\PIPE\\", ncacn_np_name, 6))
 301                 {
 302                         ncacn_np_name = &ncacn_np_name[6];
 303                 }
 304
 305                 if (!strequal(ncacn_np_name, pipe_name))
 306                 {
 307                         continue;
 308                 }
 309                 if (!strequal(ncacn_np_srv_name, sv_name))
 310                 {
 311                         continue;
 312                 }
 313                 if (key != NULL && (k.pid != key->pid || k.vuid != key->vuid))
 314                 {
 315                         continue;
 316                 }
 317                 if (usr_creds == NULL)
 318                 {
 319                         if (reuse)
 320                         {
 321                                 return c;
 322                         }
 323                         else
 324                         {
 325                                 continue;
 326                         }
 327                 }
 328                 if (!strequal
 329                     (usr_creds->user_name, c->cli->smb->user_name))
 330                 {
 331                         continue;
 332                 }
 333                 if (!reuse
 334                     && !pwd_compare(&usr_creds->pwd, &c->cli->smb->pwd))
 335                 {
 336                         DEBUG(100, ("password doesn't match\n"));
 337                         continue;
 338                 }
 339                 if (usr_creds->domain[0] == 0)
 340                 {
 341                         return c;
 342                 }
 343                 if (strequal(usr_creds->domain, c->cli->smb->domain))
 344                 {
 345                         return c;
 346                 }
 347         }
 348
 349         return NULL;
 350 }
 351
 352
 353 /****************************************************************************
 354 initialise a msrpcent structure
 355 ****************************************************************************/
 356 struct ncacn_np *ncacn_np_initialise(struct ncacn_np *msrpc,
 357                                      const vuser_key * key)
 358 {
 359         if (!msrpc)
 360         {
 361                 msrpc = (struct ncacn_np *)malloc(sizeof(*msrpc));
 362                 if (!msrpc)
 363                         return NULL;
 364                 ZERO_STRUCTP(msrpc);
 365         }
 366
 367         if (msrpc->initialised)
 368         {
 369                 ncacn_np_shutdown(msrpc);
 370         }
 371
 372         ZERO_STRUCTP(msrpc);
 373
 374         msrpc->fnum = -1;
 375         msrpc->initialised = 1;
 376
 377         return msrpc;
 378 }
 379
 380 /****************************************************************************
 381 create a new client state from user credentials
 382 ****************************************************************************/
 383 static struct ncacn_np_use *ncacn_np_use_get(const char *pipe_name,
 384                                              const vuser_key * key)
 385 {
 386         struct ncacn_np_use *cli =
 387                 (struct ncacn_np_use *)malloc(sizeof(*cli));
 388
 389         if (cli == NULL)
 390         {
 391                 return NULL;
 392         }
 393
 394         memset(cli, 0, sizeof(*cli));
 395
 396         cli->cli = ncacn_np_initialise(NULL, key);
 397
 398         if (cli->cli == NULL)
 399         {
 400                 return NULL;
 401         }
 402
 403         return cli;
 404 }
 405
 406 /****************************************************************************
 407 init client state
 408 ****************************************************************************/
 409 struct ncacn_np *ncacn_np_use_add(const char *pipe_name,
 410                                   const vuser_key * key,
 411                                   const char *srv_name,
 412                                   const struct ntuser_creds *ntc,
 413                                   BOOL reuse, BOOL *is_new_connection)
 414 {
 415         struct ncacn_np_use *cli;
 416         DEBUG(10, ("ncacn_np_use_add: %s\n", pipe_name));
 417
 418         (*is_new_connection) = False;
 419         cli = ncacn_np_find(srv_name, pipe_name, key, ntc, reuse);
 420
 421         if (cli != NULL)
 422         {
 423                 cli->num_users++;
 424                 return cli->cli;
 425         }
 426
 427         /*
 428          * allocate
 429          */
 430
 431         (*is_new_connection) = True;
 432
 433         cli = ncacn_np_use_get(pipe_name, key);
 434
 435         if (!ncacn_np_establish_connection
 436             (cli->cli, srv_name, ntc, pipe_name, True))
 437         {
 438                 DEBUG(0, ("ncacn_np_use_add: connection failed\n"));
 439                 cli->cli = NULL;
 440                 ncacn_np_use_free(cli);
 441                 return NULL;
 442         }
 443
 444         if (key != NULL)
 445         {
 446                 cli->cli->smb->key = *key;
 447         }
 448         else
 449         {
 450                 cli->cli->smb->key.pid = sys_getpid();
 451                 cli->cli->smb->key.vuid = UID_FIELD_INVALID;
 452         }
 453
 454         add_ncacn_np_to_array(&num_msrpcs, &msrpcs, cli);
 455         cli->num_users++;
 456         return cli->cli;
 457 }
 458
 459
 460