source4/libcli/raw/clitree.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB client tree context management functions
   4    Copyright (C) Andrew Tridgell 1994-1998
   5    Copyright (C) James Myers 2003 <myersjj@samba.org>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23 #include "libcli/raw/libcliraw.h"
  24
  25 #define SETUP_REQUEST_TREE(cmd, wct, buflen) do { \
  26         req = smbcli_request_setup(tree, cmd, wct, buflen); \
  27         if (!req) return NULL; \
  28 } while (0)
  29
  30 /****************************************************************************
  31  Initialize the tree context
  32 ****************************************************************************/
  33 struct smbcli_tree *smbcli_tree_init(struct smbcli_session *session)
  34 {
  35         struct smbcli_tree *tree;
  36
  37         tree = talloc_p(session, struct smbcli_tree);
  38         if (!tree) {
  39                 return NULL;
  40         }
  41
  42         ZERO_STRUCTP(tree);
  43         tree->session = talloc_reference(tree, session);
  44
  45         return tree;
  46 }
  47
  48 /****************************************************************************
  49  Send a tconX (async send)
  50 ****************************************************************************/
  51 struct smbcli_request *smb_tree_connect_send(struct smbcli_tree *tree, union smb_tcon *parms)
  52 {
  53         struct smbcli_request *req = NULL;
  54
  55         switch (parms->tcon.level) {
  56         case RAW_TCON_TCON:
  57                 SETUP_REQUEST_TREE(SMBtcon, 0, 0);
  58                 smbcli_req_append_ascii4(req, parms->tcon.in.service, STR_ASCII);
  59                 smbcli_req_append_ascii4(req, parms->tcon.in.password,STR_ASCII);
  60                 smbcli_req_append_ascii4(req, parms->tcon.in.dev,     STR_ASCII);
  61                 break;
  62
  63         case RAW_TCON_TCONX:
  64                 SETUP_REQUEST_TREE(SMBtconX, 4, 0);
  65                 SSVAL(req->out.vwv, VWV(0), 0xFF);
  66                 SSVAL(req->out.vwv, VWV(1), 0);
  67                 SSVAL(req->out.vwv, VWV(2), parms->tconx.in.flags);
  68                 SSVAL(req->out.vwv, VWV(3), parms->tconx.in.password.length);
  69                 smbcli_req_append_blob(req, &parms->tconx.in.password);
  70                 smbcli_req_append_string(req, parms->tconx.in.path,   STR_TERMINATE | STR_UPPER);
  71                 smbcli_req_append_string(req, parms->tconx.in.device, STR_TERMINATE | STR_ASCII);
  72                 break;
  73         }
  74
  75         if (!smbcli_request_send(req)) {
  76                 smbcli_request_destroy(req);
  77                 return NULL;
  78         }
  79
  80         return req;
  81 }
  82
  83 /****************************************************************************
  84  Send a tconX (async recv)
  85 ****************************************************************************/
  86 NTSTATUS smb_tree_connect_recv(struct smbcli_request *req, TALLOC_CTX *mem_ctx, union smb_tcon *parms)
  87 {
  88         uint8_t *p;
  89
  90         if (!smbcli_request_receive(req) ||
  91             smbcli_request_is_error(req)) {
  92                 goto failed;
  93         }
  94
  95         switch (parms->tcon.level) {
  96         case RAW_TCON_TCON:
  97                 SMBCLI_CHECK_WCT(req, 2);
  98                 parms->tcon.out.max_xmit = SVAL(req->in.vwv, VWV(0));
  99                 parms->tcon.out.cnum = SVAL(req->in.vwv, VWV(1));
 100                 break;
 101
 102         case RAW_TCON_TCONX:
 103                 ZERO_STRUCT(parms->tconx.out);
 104                 parms->tconx.out.cnum = SVAL(req->in.hdr, HDR_TID);
 105                 if (req->in.wct >= 4) {
 106                         parms->tconx.out.options = SVAL(req->in.vwv, VWV(3));
 107                 }
 108
 109                 /* output is actual service name */
 110                 p = req->in.data;
 111                 if (!p) break;
 112
 113                 p += smbcli_req_pull_string(req, mem_ctx, &parms->tconx.out.dev_type,
 114                                          p, -1, STR_ASCII | STR_TERMINATE);
 115                 p += smbcli_req_pull_string(req, mem_ctx, &parms->tconx.out.fs_type,
 116                                          p, -1, STR_TERMINATE);
 117                 break;
 118         }
 119
 120 failed:
 121         return smbcli_request_destroy(req);
 122 }
 123
 124 /****************************************************************************
 125  Send a tconX (sync interface)
 126 ****************************************************************************/
 127 NTSTATUS smb_tree_connect(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_tcon *parms)
 128 {
 129         struct smbcli_request *req = smb_tree_connect_send(tree, parms);
 130         return smb_tree_connect_recv(req, mem_ctx, parms);
 131 }
 132
 133
 134 /****************************************************************************
 135  Send a tree disconnect.
 136 ****************************************************************************/
 137 NTSTATUS smb_tree_disconnect(struct smbcli_tree *tree)
 138 {
 139         struct smbcli_request *req;
 140
 141         if (!tree) return NT_STATUS_OK;
 142         req = smbcli_request_setup(tree, SMBtdis, 0, 0);
 143
 144         if (smbcli_request_send(req)) {
 145                 smbcli_request_receive(req);
 146         }
 147         return smbcli_request_destroy(req);
 148 }
 149
 150
 151 /*
 152   a convenient function to establish a smbcli_tree from scratch, using reasonable default
 153   parameters
 154 */
 155 NTSTATUS smbcli_tree_full_connection(TALLOC_CTX *parent_ctx,
 156                                      struct smbcli_tree **ret_tree,
 157                                      const char *my_name,
 158                                      const char *dest_host, int port,
 159                                      const char *service, const char *service_type,
 160                                      const char *user, const char *domain,
 161                                      const char *password)
 162 {
 163         struct smbcli_socket *sock;
 164         struct smbcli_transport *transport;
 165         struct smbcli_session *session;
 166         struct smbcli_tree *tree;
 167         NTSTATUS status;
 168         struct nmb_name calling;
 169         struct nmb_name called;
 170         union smb_sesssetup setup;
 171         union smb_tcon tcon;
 172         TALLOC_CTX *mem_ctx;
 173         char *in_path = NULL;
 174
 175         *ret_tree = NULL;
 176
 177         sock = smbcli_sock_init(parent_ctx);
 178         if (!sock) {
 179                 return NT_STATUS_NO_MEMORY;
 180         }
 181
 182         /* open a TCP socket to the server */
 183         if (!smbcli_sock_connect_byname(sock, dest_host, port)) {
 184                 talloc_free(sock);
 185                 DEBUG(2,("Failed to establish socket connection - %s\n", strerror(errno)));
 186                 return NT_STATUS_UNSUCCESSFUL;
 187         }
 188
 189         transport = smbcli_transport_init(sock);
 190         talloc_free(sock);
 191         if (!transport) {
 192                 return NT_STATUS_NO_MEMORY;
 193         }
 194
 195         /* send a NBT session request, if applicable */
 196         make_nmb_name(&calling, my_name, 0x0);
 197         choose_called_name(&called,  dest_host, 0x20);
 198
 199         if (!smbcli_transport_connect(transport, &calling, &called)) {
 200                 talloc_free(transport);
 201                 return NT_STATUS_UNSUCCESSFUL;
 202         }
 203
 204
 205         /* negotiate protocol options with the server */
 206         status = smb_raw_negotiate(transport);
 207         if (!NT_STATUS_IS_OK(status)) {
 208                 talloc_free(transport);
 209                 return status;
 210         }
 211
 212         session = smbcli_session_init(transport);
 213         talloc_free(transport);
 214         if (!session) {
 215                 return NT_STATUS_NO_MEMORY;
 216         }
 217
 218         /* prepare a session setup to establish a security context */
 219         setup.generic.level = RAW_SESSSETUP_GENERIC;
 220         setup.generic.in.sesskey = transport->negotiate.sesskey;
 221         setup.generic.in.capabilities = transport->negotiate.capabilities;
 222         if (!user || !user[0]) {
 223                 setup.generic.in.password = NULL;
 224                 setup.generic.in.user = "";
 225                 setup.generic.in.domain = "";
 226                 setup.generic.in.capabilities &= ~CAP_EXTENDED_SECURITY;
 227         } else {
 228                 setup.generic.in.password = password;
 229                 setup.generic.in.user = user;
 230                 setup.generic.in.domain = domain;
 231         }
 232
 233         mem_ctx = talloc_init("tcon");
 234         if (!mem_ctx) {
 235                 return NT_STATUS_NO_MEMORY;
 236         }
 237
 238         status = smb_raw_session_setup(session, mem_ctx, &setup);
 239         if (!NT_STATUS_IS_OK(status)) {
 240                 talloc_free(session);
 241                 talloc_free(mem_ctx);
 242                 return status;
 243         }
 244
 245         session->vuid = setup.generic.out.vuid;
 246
 247         tree = smbcli_tree_init(session);
 248         talloc_free(session);
 249         if (!tree) {
 250                 talloc_free(mem_ctx);
 251                 return NT_STATUS_NO_MEMORY;
 252         }
 253
 254         /* connect to a share using a tree connect */
 255         tcon.generic.level = RAW_TCON_TCONX;
 256         tcon.tconx.in.flags = 0;
 257         tcon.tconx.in.password = data_blob(NULL, 0);
 258         asprintf(&in_path, "\\\\%s\\%s", dest_host, service);
 259         tcon.tconx.in.path = in_path;
 260         if (!service_type) {
 261                 if (strequal(service, "IPC$"))
 262                         service_type = "IPC";
 263                 else
 264                         service_type = "?????";
 265         }
 266         tcon.tconx.in.device = service_type;
 267
 268         status = smb_tree_connect(tree, mem_ctx, &tcon);
 269
 270         SAFE_FREE(in_path);
 271
 272         if (!NT_STATUS_IS_OK(status)) {
 273                 talloc_free(tree);
 274                 talloc_free(mem_ctx);
 275                 return status;
 276         }
 277
 278         tree->tid = tcon.tconx.out.cnum;
 279         if (tcon.tconx.out.dev_type) {
 280                 tree->device = talloc_strdup(tree, tcon.tconx.out.dev_type);
 281         }
 282         if (tcon.tconx.out.fs_type) {
 283                 tree->fs_type = talloc_strdup(tree, tcon.tconx.out.fs_type);
 284         }
 285
 286         talloc_free(mem_ctx);
 287
 288         *ret_tree = tree;
 289         return NT_STATUS_OK;
 290 }