source3/rpc_client/cli_use.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    SMB client generic functions
   5    Copyright (C) Andrew Tridgell 1994-1999
   6    Copyright (C) Luke Kenneth Casson Leighton 1996-1999
   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 #define NO_SYSLOG
  24
  25 #include "includes.h"
  26 #include "trans2.h"
  27
  28 extern int DEBUGLEVEL;
  29 extern pstring scope;
  30 extern pstring global_myname;
  31
  32 struct cli_use
  33 {
  34         struct cli_state *cli;
  35         uint32 num_users;
  36 };
  37
  38 static struct cli_use **clis = NULL;
  39 uint32 num_clis = 0;
  40
  41 /****************************************************************************
  42 terminate client connection
  43 ****************************************************************************/
  44 static void cli_use_free(struct cli_use *cli)
  45 {
  46         cli_ulogoff(cli->cli);
  47         cli_shutdown(cli->cli);
  48         free(cli->cli);
  49
  50         free(cli);
  51 }
  52
  53 /****************************************************************************
  54 free a client array
  55 ****************************************************************************/
  56 static void free_cli_array(uint32 num_entries, struct cli_use **entries)
  57 {
  58         void(*fn)(void*) = (void(*)(void*))&cli_use_free;
  59         free_void_array(num_entries, (void**)entries, *fn);
  60 }
  61
  62 /****************************************************************************
  63 add a client state to the array
  64 ****************************************************************************/
  65 static struct cli_use* add_cli_to_array(uint32 *len,
  66                                 struct cli_use ***array,
  67                                 struct cli_use *cli)
  68 {
  69         int i;
  70         for (i = 0; i < num_clis; i++)
  71         {
  72                 if (clis[i] == NULL)
  73                 {
  74                         clis[i] = cli;
  75                         return cli;
  76                 }
  77         }
  78
  79         return (struct cli_use*)add_item_to_array(len,
  80                              (void***)array, (void*)cli);
  81
  82 }
  83
  84 /****************************************************************************
  85 initiate client array
  86 ****************************************************************************/
  87 void init_cli_use(void)
  88 {
  89         clis = NULL;
  90         num_clis = 0;
  91 }
  92
  93 /****************************************************************************
  94 terminate client array
  95 ****************************************************************************/
  96 void free_cli_use(void)
  97 {
  98         free_cli_array(num_clis, clis);
  99         init_cli_use();
 100 }
 101
 102 /****************************************************************************
 103 find client state.  server name, user name, domain name and password must all
 104 match.
 105 ****************************************************************************/
 106 static struct cli_use *cli_find(const char* srv_name,
 107                                 const struct user_credentials *usr_creds)
 108 {
 109         int i;
 110         const char *sv_name = srv_name;
 111         if (strnequal("\\\\", sv_name, 2))
 112         {
 113                 sv_name = &sv_name[2];
 114         }
 115
 116         for (i = 0; i < num_clis; i++)
 117         {
 118                 uchar ntpw[16], clintpw[16];
 119                 char *cli_name = NULL;
 120
 121                 if (clis[i] == NULL) continue;
 122
 123                 cli_name = clis[i]->cli->desthost;
 124                 if (strnequal("\\\\", cli_name, 2))
 125                 {
 126                         cli_name = &cli_name[2];
 127                 }
 128
 129                 if (!strequal(cli_name, sv_name)) continue;
 130
 131                 pwd_get_lm_nt_16(&usr_creds->pwd, NULL, ntpw);
 132                 pwd_get_lm_nt_16(&clis[i]->cli->usr.pwd, NULL, clintpw);
 133
 134                 if (strequal(usr_creds->user_name, clis[i]->cli->usr.user_name) &&
 135                     strequal(usr_creds->domain, clis[i]->cli->usr.domain) &&
 136                     memcmp(ntpw, clintpw, 16) == 0)
 137                 {
 138                         return clis[i];
 139                 }
 140         }
 141
 142         return NULL;
 143 }
 144
 145 /****************************************************************************
 146 create a new client state from user credentials
 147 ****************************************************************************/
 148 static struct cli_use *cli_use_get(const char* srv_name,
 149                                 const struct user_credentials *usr_creds)
 150 {
 151         struct cli_use *cli = (struct cli_use*)malloc(sizeof(*cli));
 152
 153         if (cli == NULL)
 154         {
 155                 return NULL;
 156         }
 157
 158         memset(cli, 0, sizeof(*cli));
 159
 160         cli->cli = cli_initialise(NULL);
 161
 162         if (cli->cli == NULL)
 163         {
 164                 return NULL;
 165         }
 166
 167         cli->cli->capabilities |= CAP_NT_SMBS | CAP_STATUS32;
 168         cli_init_creds(cli->cli, usr_creds);
 169
 170         cli->cli->use_ntlmv2 = lp_client_ntlmv2();
 171
 172         return cli;
 173 }
 174
 175 /****************************************************************************
 176 init client state
 177 ****************************************************************************/
 178 struct cli_state *cli_net_use_addlist(char* servers,
 179                                 const struct user_credentials *usr_creds)
 180 {
 181         struct cli_use *cli = cli_find(servers, usr_creds);
 182
 183         if (cli != NULL)
 184         {
 185                 cli->num_users++;
 186                 return cli->cli;
 187         }
 188
 189         /*
 190          * allocate
 191          */
 192
 193         cli = cli_use_get(servers, usr_creds);
 194
 195         if (cli == NULL)
 196         {
 197                 return NULL;
 198         }
 199
 200         if (!cli_connect_serverlist(cli->cli, servers))
 201         {
 202                 DEBUG(0,("cli_net_use_addlist: connection failed\n"));
 203                 cli_use_free(cli);
 204                 return NULL;
 205         }
 206
 207         cli->cli->ntlmssp_cli_flgs = 0x0;
 208
 209         add_cli_to_array(&num_clis, &clis, cli);
 210         cli->num_users++;
 211
 212         return cli->cli;
 213 }
 214
 215 /****************************************************************************
 216 init client state
 217 ****************************************************************************/
 218 struct cli_state *cli_net_use_add(const char* srv_name,
 219                                 const struct user_credentials *usr_creds)
 220 {
 221         struct nmb_name calling;
 222         struct nmb_name called;
 223         struct in_addr *dest_ip = NULL;
 224         fstring dest_host;
 225         struct in_addr ip;
 226
 227         struct cli_use *cli = cli_find(srv_name, usr_creds);
 228
 229         if (cli != NULL)
 230         {
 231                 cli->num_users++;
 232                 return cli->cli;
 233         }
 234
 235         /*
 236          * allocate
 237          */
 238
 239         cli = cli_use_get(srv_name, usr_creds);
 240
 241         if (resolve_srv_name(srv_name, dest_host, &ip))
 242         {
 243                 dest_ip = &ip;
 244         }
 245         else
 246         {
 247                 cli_use_free(cli);
 248                 return NULL;
 249         }
 250
 251         make_nmb_name(&called , dns_to_netbios_name(dest_host    ), 32, scope);
 252         make_nmb_name(&calling, dns_to_netbios_name(global_myname),  0, scope);
 253
 254         /*
 255          * connect
 256          */
 257
 258         if (!cli_establish_connection(cli->cli,
 259                                   dest_host, dest_ip,
 260                                   &calling, &called,
 261                                   "IPC$", "IPC",
 262                                   False, True))
 263         {
 264                 DEBUG(0,("cli_net_use_add: connection failed\n"));
 265                 cli_use_free(cli);
 266                 return NULL;
 267         }
 268
 269         cli->cli->ntlmssp_cli_flgs = 0x0;
 270
 271         add_cli_to_array(&num_clis, &clis, cli);
 272         cli->num_users++;
 273
 274         return cli->cli;
 275 }
 276
 277 /****************************************************************************
 278 delete a client state
 279 ****************************************************************************/
 280 BOOL cli_net_use_del(const char* srv_name,
 281                                 const struct user_credentials *usr_creds,
 282                                 BOOL force_close,
 283                                 BOOL *connection_closed)
 284 {
 285         int i;
 286         const char *sv_name = srv_name;
 287
 288         DEBUG(10,("cli_net_use_del: %s. force close: %s\n",
 289                    srv_name, BOOLSTR(force_close)));
 290         dbgflush();
 291
 292         if (strnequal("\\\\", sv_name, 2))
 293         {
 294                 sv_name = &sv_name[2];
 295         }
 296
 297         *connection_closed = False;
 298
 299         for (i = 0; i < num_clis; i++)
 300         {
 301                 char *cli_name = NULL;
 302
 303                 if (clis[i] == NULL) continue;
 304                 if (clis[i]->cli == NULL) continue;
 305
 306                 cli_name = clis[i]->cli->desthost;
 307                 if (strnequal("\\\\", cli_name, 2))
 308                 {
 309                         cli_name = &cli_name[2];
 310                 }
 311
 312                 if (!strequal(cli_name, sv_name)) continue;
 313
 314                 if (strequal(usr_creds->user_name,
 315                              clis[i]->cli->usr.user_name) &&
 316                     strequal(usr_creds->domain,
 317                              clis[i]->cli->usr.domain))
 318                 {
 319                         /* decrement number of users */
 320                         clis[i]->num_users--;
 321
 322                         DEBUG(10,("idx: %i num_users now: %d\n",
 323                                    i, clis[i]->num_users));
 324                         dbgflush();
 325
 326                         if (force_close || clis[i]->num_users == 0)
 327                         {
 328                                 cli_use_free(clis[i]);
 329                                 clis[i] = NULL;
 330                                 *connection_closed = True;
 331                         }
 332                         return True;
 333                 }
 334         }
 335
 336         return False;
 337 }
 338