source4/libcli/raw/libcliraw.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB parameters and setup
   4
   5    Copyright (C) Andrew Tridgell 2002-2004
   6    Copyright (C) James Myers 2003 <myersjj@samba.org>
   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 3 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, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #ifndef __LIBCLI_RAW_H__
  23 #define __LIBCLI_RAW_H__
  24
  25 #include "libcli/raw/request.h"
  26 #include "librpc/gen_ndr/nbt.h"
  27
  28 struct smbcli_tree;  /* forward declare */
  29 struct smbcli_request;  /* forward declare */
  30 struct smbcli_session;  /* forward declare */
  31 struct smbcli_transport;  /* forward declare */
  32
  33 struct resolve_context;
  34 struct cli_credentials;
  35 struct gensec_settings;
  36
  37 /* default timeout for all smb requests */
  38 #define SMB_REQUEST_TIMEOUT 60
  39
  40 /* context that will be and has been negotiated between the client and server */
  41 struct smbcli_negotiate {
  42         /*
  43          * negotiated maximum transmit size - this is given to us by the server
  44          */
  45         uint32_t max_xmit;
  46
  47         /* maximum number of requests that can be multiplexed */
  48         uint16_t max_mux;
  49
  50         /* the negotiatiated protocol */
  51         enum protocol_types protocol;
  52
  53         uint8_t sec_mode;               /* security mode returned by negprot */
  54         uint8_t key_len;
  55         DATA_BLOB server_guid;      /* server_guid */
  56         DATA_BLOB secblob;      /* cryptkey or negTokenInit blob */
  57         uint32_t sesskey;
  58
  59         struct smb_signing_context sign_info;
  60
  61         /* capabilities that the server reported */
  62         uint32_t capabilities;
  63
  64         int server_zone;
  65         time_t server_time;
  66         uint_t readbraw_supported:1;
  67         uint_t writebraw_supported:1;
  68
  69         char *server_domain;
  70 };
  71
  72 /* this is the context for a SMB socket associated with the socket itself */
  73 struct smbcli_socket {
  74         struct socket_context *sock;
  75
  76         /* what port we ended up connected to */
  77         int port;
  78
  79         /* the hostname we connected to */
  80         const char *hostname;
  81
  82         /* the event handle for waiting for socket IO */
  83         struct {
  84                 struct tevent_context *ctx;
  85                 struct tevent_fd *fde;
  86                 struct tevent_timer *te;
  87         } event;
  88 };
  89
  90 /*
  91   this structure allows applications to control the behaviour of the
  92   client library
  93 */
  94 struct smbcli_options {
  95         uint_t use_oplocks:1;
  96         uint_t use_level2_oplocks:1;
  97         uint_t use_spnego:1;
  98         uint_t unicode:1;
  99         uint_t ntstatus_support:1;
 100         int max_protocol;
 101         uint32_t max_xmit;
 102         uint16_t max_mux;
 103         int request_timeout;
 104         enum smb_signing_state signing;
 105 };
 106
 107 /* this is the context for the client transport layer */
 108 struct smbcli_transport {
 109         /* socket level info */
 110         struct smbcli_socket *socket;
 111
 112         /* the next mid to be allocated - needed for signing and
 113            request matching */
 114         uint16_t next_mid;
 115
 116         /* negotiated protocol information */
 117         struct smbcli_negotiate negotiate;
 118
 119         /* options to control the behaviour of the client code */
 120         struct smbcli_options options;
 121
 122         /* is a readbraw pending? we need to handle that case
 123            specially on receiving packets */
 124         uint_t readbraw_pending:1;
 125
 126         /* an idle function - if this is defined then it will be
 127            called once every period microseconds while we are waiting
 128            for a packet */
 129         struct {
 130                 void (*func)(struct smbcli_transport *, void *);
 131                 void *private_data;
 132                 uint_t period;
 133         } idle;
 134
 135         /* the error fields from the last message */
 136         struct {
 137                 enum {ETYPE_NONE, ETYPE_SMB, ETYPE_SOCKET, ETYPE_NBT} etype;
 138                 union {
 139                         NTSTATUS nt_status;
 140                         enum {SOCKET_READ_TIMEOUT,
 141                               SOCKET_READ_EOF,
 142                               SOCKET_READ_ERROR,
 143                               SOCKET_WRITE_ERROR,
 144                               SOCKET_READ_BAD_SIG} socket_error;
 145                         uint_t nbt_error;
 146                 } e;
 147         } error;
 148
 149         struct {
 150                 /* a oplock break request handler */
 151                 bool (*handler)(struct smbcli_transport *transport,
 152                                 uint16_t tid, uint16_t fnum, uint8_t level, void *private_data);
 153                 /* private data passed to the oplock handler */
 154                 void *private_data;
 155         } oplock;
 156
 157         /* a list of async requests that are pending for receive on this connection */
 158         struct smbcli_request *pending_recv;
 159
 160         /* remember the called name - some sub-protocols require us to
 161            know the server name */
 162         struct nbt_name called;
 163
 164         /* context of the stream -> packet parser */
 165         struct packet_context *packet;
 166
 167         /* iconv convenience */
 168         struct smb_iconv_convenience *iconv_convenience;
 169 };
 170
 171 /* this is the context for the user */
 172
 173 /* this is the context for the session layer */
 174 struct smbcli_session {
 175         /* transport layer info */
 176         struct smbcli_transport *transport;
 177
 178         /* after a session setup the server provides us with
 179            a vuid identifying the security context */
 180         uint16_t vuid;
 181
 182         /* default pid for this session */
 183         uint32_t pid;
 184
 185         /* the flags2 for each packet - this allows
 186            the user to control these for torture testing */
 187         uint16_t flags2;
 188
 189         DATA_BLOB user_session_key;
 190
 191         /* the spnego context if we use extented security */
 192         struct gensec_security *gensec;
 193
 194         struct smbcli_session_options {
 195                 uint_t lanman_auth:1;
 196                 uint_t ntlmv2_auth:1;
 197                 uint_t plaintext_auth:1;
 198         } options;
 199 };
 200
 201 /*
 202    smbcli_tree context: internal state for a tree connection.
 203  */
 204 struct smbcli_tree {
 205         /* session layer info */
 206         struct smbcli_session *session;
 207
 208         uint16_t tid;                   /* tree id, aka cnum */
 209         char *device;
 210         char *fs_type;
 211 };
 212
 213
 214 /*
 215   a client request moves between the following 4 states.
 216 */
 217 enum smbcli_request_state {SMBCLI_REQUEST_INIT, /* we are creating the request */
 218                         SMBCLI_REQUEST_RECV, /* we are waiting for a matching reply */
 219                         SMBCLI_REQUEST_DONE, /* the request is finished */
 220                         SMBCLI_REQUEST_ERROR}; /* a packet or transport level error has occurred */
 221
 222 /* the context for a single SMB request. This is passed to any request-context
 223  * functions (similar to context.h, the server version).
 224  * This will allow requests to be multi-threaded. */
 225 struct smbcli_request {
 226         /* allow a request to be part of a list of requests */
 227         struct smbcli_request *next, *prev;
 228
 229         /* each request is in one of 4 possible states */
 230         enum smbcli_request_state state;
 231
 232         /* a request always has a transport context, nearly always has
 233            a session context and usually has a tree context */
 234         struct smbcli_transport *transport;
 235         struct smbcli_session *session;
 236         struct smbcli_tree *tree;
 237
 238         /* a receive helper, smbcli_transport_finish_recv will not call
 239            req->async.fn callback handler unless the recv_helper returns
 240            a value > SMBCLI_REQUEST_RECV. */
 241         struct {
 242                 enum smbcli_request_state (*fn)(struct smbcli_request *);
 243                 void *private_data;
 244         } recv_helper;
 245
 246         /* the flags2 from the SMB request, in raw form (host byte
 247            order). Used to parse strings */
 248         uint16_t flags2;
 249
 250         /* the NT status for this request. Set by packet receive code
 251            or code detecting error. */
 252         NTSTATUS status;
 253
 254         /* the sequence number of this packet - used for signing */
 255         uint_t seq_num;
 256
 257         /* list of ntcancel request for this requests */
 258         struct smbcli_request *ntcancel;
 259
 260         /* set if this is a one-way request, meaning we are not
 261            expecting a reply from the server. */
 262         uint_t one_way_request:1;
 263
 264         /* set this when the request should only increment the signing
 265            counter by one */
 266         uint_t sign_single_increment:1;
 267
 268         /* the caller wants to do the signing check */
 269         bool sign_caller_checks;
 270
 271         /* give the caller a chance to prevent the talloc_free() in the _recv() function */
 272         bool do_not_free;
 273
 274         /* the mid of this packet - used to match replies */
 275         uint16_t mid;
 276
 277         struct smb_request_buffer in;
 278         struct smb_request_buffer out;
 279
 280         /* information on what to do with a reply when it is received
 281            asyncronously. If this is not setup when a reply is received then
 282            the reply is discarded
 283
 284            The private pointer is private to the caller of the client
 285            library (the application), not private to the library
 286         */
 287         struct {
 288                 void (*fn)(struct smbcli_request *);
 289                 void *private_data;
 290         } async;
 291 };
 292
 293 /* useful way of catching wct errors with file and line number */
 294 #define SMBCLI_CHECK_MIN_WCT(req, wcount) if ((req)->in.wct < (wcount)) { \
 295       DEBUG(1,("Unexpected WCT %d at %s(%d) - expected min %d\n", (req)->in.wct, __FILE__, __LINE__, wcount)); \
 296       req->status = NT_STATUS_INVALID_PARAMETER; \
 297       goto failed; \
 298 }
 299
 300 #define SMBCLI_CHECK_WCT(req, wcount) if ((req)->in.wct != (wcount)) { \
 301       DEBUG(1,("Unexpected WCT %d at %s(%d) - expected %d\n", (req)->in.wct, __FILE__, __LINE__, wcount)); \
 302       req->status = NT_STATUS_INVALID_PARAMETER; \
 303       goto failed; \
 304 }
 305
 306 #include "libcli/raw/interfaces.h"
 307
 308 NTSTATUS smb_raw_read_recv(struct smbcli_request *req, union smb_read *parms);
 309 struct smbcli_request *smb_raw_read_send(struct smbcli_tree *tree, union smb_read *parms);
 310 NTSTATUS smb_raw_trans_recv(struct smbcli_request *req,
 311                              TALLOC_CTX *mem_ctx,
 312                              struct smb_trans2 *parms);
 313 size_t smb_raw_max_trans_data(struct smbcli_tree *tree, size_t param_size);
 314 struct smbcli_request *smb_raw_trans_send(struct smbcli_tree *tree, struct smb_trans2 *parms);
 315 NTSTATUS smbcli_request_destroy(struct smbcli_request *req);
 316 struct smbcli_request *smb_raw_write_send(struct smbcli_tree *tree, union smb_write *parms);
 317 struct smbcli_request *smb_raw_close_send(struct smbcli_tree *tree, union smb_close *parms);
 318 NTSTATUS smb_raw_open_recv(struct smbcli_request *req, TALLOC_CTX *mem_ctx, union smb_open *parms);
 319 struct smbcli_request *smb_raw_open_send(struct smbcli_tree *tree, union smb_open *parms);
 320
 321 bool smbcli_transport_process(struct smbcli_transport *transport);
 322 const char *smbcli_errstr(struct smbcli_tree *tree);
 323 NTSTATUS smb_raw_fsinfo(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_fsinfo *fsinfo);
 324 NTSTATUS smb_raw_pathinfo(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_fileinfo *parms);
 325 NTSTATUS smb_raw_shadow_data(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, struct smb_shadow_copy *info);
 326 NTSTATUS smb_raw_fileinfo(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_fileinfo *parms);
 327 struct smbcli_tree *smbcli_tree_init(struct smbcli_session *session, TALLOC_CTX *parent_ctx, bool primary);
 328 NTSTATUS smb_raw_tcon(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_tcon *parms);
 329 void smbcli_oplock_handler(struct smbcli_transport *transport,
 330                         bool (*handler)(struct smbcli_transport *, uint16_t, uint16_t, uint8_t, void *),
 331                         void *private_data);
 332 void smbcli_transport_idle_handler(struct smbcli_transport *transport,
 333                                    void (*idle_func)(struct smbcli_transport *, void *),
 334                                    uint64_t period,
 335                                    void *private_data);
 336 NTSTATUS smbcli_request_simple_recv(struct smbcli_request *req);
 337 bool smbcli_oplock_ack(struct smbcli_tree *tree, uint16_t fnum, uint16_t ack_level);
 338 NTSTATUS smb_raw_open(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_open *parms);
 339 NTSTATUS smb_raw_close(struct smbcli_tree *tree, union smb_close *parms);
 340 NTSTATUS smb_raw_unlink(struct smbcli_tree *tree, union smb_unlink *parms);
 341 NTSTATUS smb_raw_chkpath(struct smbcli_tree *tree, union smb_chkpath *parms);
 342 NTSTATUS smb_raw_mkdir(struct smbcli_tree *tree, union smb_mkdir *parms);
 343 NTSTATUS smb_raw_rmdir(struct smbcli_tree *tree, struct smb_rmdir *parms);
 344 NTSTATUS smb_raw_rename(struct smbcli_tree *tree, union smb_rename *parms);
 345 NTSTATUS smb_raw_seek(struct smbcli_tree *tree, union smb_seek *parms);
 346 NTSTATUS smb_raw_read(struct smbcli_tree *tree, union smb_read *parms);
 347 NTSTATUS smb_raw_write(struct smbcli_tree *tree, union smb_write *parms);
 348 NTSTATUS smb_raw_lock(struct smbcli_tree *tree, union smb_lock *parms);
 349 NTSTATUS smb_raw_setpathinfo(struct smbcli_tree *tree, union smb_setfileinfo *parms);
 350 NTSTATUS smb_raw_setfileinfo(struct smbcli_tree *tree, union smb_setfileinfo *parms);
 351
 352 struct smbcli_request *smb_raw_changenotify_send(struct smbcli_tree *tree, union smb_notify *parms);
 353 NTSTATUS smb_raw_changenotify_recv(struct smbcli_request *req, TALLOC_CTX *mem_ctx, union smb_notify *parms);
 354
 355 NTSTATUS smb_tree_disconnect(struct smbcli_tree *tree);
 356 NTSTATUS smbcli_nt_error(struct smbcli_tree *tree);
 357 NTSTATUS smb_raw_exit(struct smbcli_session *session);
 358 NTSTATUS smb_raw_pathinfo_recv(struct smbcli_request *req,
 359                                TALLOC_CTX *mem_ctx,
 360                                union smb_fileinfo *parms);
 361 struct smbcli_request *smb_raw_pathinfo_send(struct smbcli_tree *tree,
 362                                              union smb_fileinfo *parms);
 363 struct smbcli_request *smb_raw_setpathinfo_send(struct smbcli_tree *tree,
 364                                              union smb_setfileinfo *parms);
 365 struct smbcli_request *smb_raw_echo_send(struct smbcli_transport *transport,
 366                                          struct smb_echo *p);
 367 NTSTATUS smb_raw_search_first(struct smbcli_tree *tree,
 368                               TALLOC_CTX *mem_ctx,
 369                               union smb_search_first *io, void *private_data,
 370                               smbcli_search_callback callback);
 371 NTSTATUS smb_raw_flush(struct smbcli_tree *tree, union smb_flush *parms);
 372
 373 NTSTATUS smb_raw_trans(struct smbcli_tree *tree,
 374                        TALLOC_CTX *mem_ctx,
 375                        struct smb_trans2 *parms);
 376
 377 struct smbcli_socket *smbcli_sock_connect_byname(const char *host, const char **ports,
 378                                                  TALLOC_CTX *mem_ctx,
 379                                                  struct resolve_context *resolve_ctx,
 380                                                  struct tevent_context *event_ctx,
 381                                                  const char *socket_options);
 382 void smbcli_sock_dead(struct smbcli_socket *sock);
 383
 384 #endif /* __LIBCLI_RAW__H__ */