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/smb/smb_common.h"
  26 #include "libcli/raw/request.h"
  27 #include "librpc/gen_ndr/nbt.h"
  28 #include "libcli/raw/interfaces.h"
  29
  30 struct smbcli_tree;  /* forward declare */
  31 struct smbcli_request;  /* forward declare */
  32 struct smbcli_session;  /* forward declare */
  33 struct smbcli_transport;  /* forward declare */
  34
  35 struct resolve_context;
  36 struct cli_credentials;
  37 struct gensec_settings;
  38
  39 /* default timeout for all smb requests */
  40 #define SMB_REQUEST_TIMEOUT 60
  41
  42 /* context that will be and has been negotiated between the client and server */
  43 struct smbcli_negotiate {
  44         /*
  45          * negotiated maximum transmit size - this is given to us by the server
  46          */
  47         uint32_t max_xmit;
  48
  49         /* maximum number of requests that can be multiplexed */
  50         uint16_t max_mux;
  51
  52         /* the negotiatiated protocol */
  53         enum protocol_types protocol;
  54
  55         uint8_t sec_mode;               /* security mode returned by negprot */
  56         DATA_BLOB secblob;      /* cryptkey or negTokenInit blob */
  57         uint32_t sesskey;
  58
  59         /* capabilities that the server reported */
  60         uint32_t capabilities;
  61
  62         int server_zone;
  63         time_t server_time;
  64
  65         unsigned int readbraw_supported:1;
  66         unsigned int writebraw_supported:1;
  67         unsigned int lockread_supported:1;
  68 };
  69
  70 /* this is the context for a SMB socket associated with the socket itself */
  71 struct smbcli_socket {
  72         struct socket_context *sock;
  73
  74         /* what port we ended up connected to */
  75         int port;
  76
  77         /* the hostname we connected to */
  78         const char *hostname;
  79
  80         /* the event handle for waiting for socket IO */
  81         struct {
  82                 struct tevent_context *ctx;
  83                 struct tevent_fd *fde;
  84                 struct tevent_timer *te;
  85         } event;
  86 };
  87
  88 /*
  89   this structure allows applications to control the behaviour of the
  90   client library
  91 */
  92 struct smbcli_options {
  93         unsigned int use_oplocks:1;
  94         unsigned int use_level2_oplocks:1;
  95         unsigned int use_spnego:1;
  96         unsigned int unicode:1;
  97         unsigned int ntstatus_support:1;
  98         int max_protocol;
  99         uint32_t max_xmit;
 100         uint16_t max_mux;
 101         int request_timeout;
 102         enum smb_signing_setting signing;
 103 };
 104
 105 /* this is the context for the client transport layer */
 106 struct smbcli_transport {
 107         struct tevent_context *ev; /* TODO: remove this !!! */
 108         struct smbXcli_conn *conn;
 109
 110         /* negotiated protocol information */
 111         struct smbcli_negotiate negotiate;
 112
 113         /* options to control the behaviour of the client code */
 114         struct smbcli_options options;
 115
 116         /* an idle function - if this is defined then it will be
 117            called once every period microseconds while we are waiting
 118            for a packet */
 119         struct {
 120                 void (*func)(struct smbcli_transport *, void *);
 121                 void *private_data;
 122                 unsigned int period;
 123                 struct tevent_timer *te;
 124         } idle;
 125
 126         /* the error fields from the last message */
 127         struct {
 128                 enum {ETYPE_NONE, ETYPE_SMB, ETYPE_SOCKET, ETYPE_NBT} etype;
 129                 union {
 130                         NTSTATUS nt_status;
 131                         enum {SOCKET_READ_TIMEOUT,
 132                               SOCKET_READ_EOF,
 133                               SOCKET_READ_ERROR,
 134                               SOCKET_WRITE_ERROR,
 135                               SOCKET_READ_BAD_SIG} socket_error;
 136                         unsigned int nbt_error;
 137                 } e;
 138         } error;
 139
 140         struct {
 141                 /* a oplock break request handler */
 142                 bool (*handler)(struct smbcli_transport *transport,
 143                                 uint16_t tid, uint16_t fnum, uint8_t level, void *private_data);
 144                 /* private data passed to the oplock handler */
 145                 void *private_data;
 146         } oplock;
 147         struct tevent_req *break_subreq;
 148 };
 149
 150 /* this is the context for the user */
 151
 152 /* this is the context for the session layer */
 153 struct smbcli_session {
 154         /* transport layer info */
 155         struct smbcli_transport *transport;
 156
 157         /* after a session setup the server provides us with
 158            a vuid identifying the security context */
 159         struct smbXcli_session *smbXcli;
 160         uint16_t vuid;
 161
 162         /* default pid for this session */
 163         uint32_t pid;
 164
 165         /* the flags2 for each packet - this allows
 166            the user to control these for torture testing */
 167         uint16_t flags2;
 168
 169         DATA_BLOB user_session_key;
 170
 171         /* the spnego context if we use extented security */
 172         struct gensec_security *gensec;
 173
 174         struct smbcli_session_options {
 175                 unsigned int lanman_auth:1;
 176                 unsigned int ntlmv2_auth:1;
 177                 unsigned int plaintext_auth:1;
 178         } options;
 179
 180         const char *os;
 181         const char *lanman;
 182 };
 183
 184 /*
 185    smbcli_tree context: internal state for a tree connection.
 186  */
 187 struct smbcli_tree {
 188         /* session layer info */
 189         struct smbcli_session *session;
 190
 191         uint16_t tid;                   /* tree id, aka cnum */
 192         char *device;
 193         char *fs_type;
 194 };
 195
 196
 197 /*
 198   a client request moves between the following 4 states.
 199 */
 200 enum smbcli_request_state {SMBCLI_REQUEST_INIT, /* we are creating the request */
 201                         SMBCLI_REQUEST_RECV, /* we are waiting for a matching reply */
 202                         SMBCLI_REQUEST_DONE, /* the request is finished */
 203                         SMBCLI_REQUEST_ERROR}; /* a packet or transport level error has occurred */
 204
 205 /* the context for a single SMB request. This is passed to any request-context
 206  * functions (similar to context.h, the server version).
 207  * This will allow requests to be multi-threaded. */
 208 struct smbcli_request {
 209         /* smbXcli_req */
 210         struct tevent_req *subreqs[2];
 211
 212         /* each request is in one of 4 possible states */
 213         enum smbcli_request_state state;
 214
 215         /* a request always has a transport context, nearly always has
 216            a session context and usually has a tree context */
 217         struct smbcli_transport *transport;
 218         struct smbcli_session *session;
 219         struct smbcli_tree *tree;
 220
 221         /* the flags2 from the SMB request, in raw form (host byte
 222            order). Used to parse strings */
 223         uint16_t flags2;
 224
 225         /* the NT status for this request. Set by packet receive code
 226            or code detecting error. */
 227         NTSTATUS status;
 228
 229         /* the caller wants to do the signing check */
 230         bool sign_caller_checks;
 231
 232         /* give the caller a chance to prevent the talloc_free() in the _recv() function */
 233         bool do_not_free;
 234
 235         struct smb_request_buffer in;
 236         struct smb_request_buffer out;
 237
 238         struct smb_trans2 trans2;
 239         struct smb_nttrans nttrans;
 240
 241         /* information on what to do with a reply when it is received
 242            asyncronously. If this is not setup when a reply is received then
 243            the reply is discarded
 244
 245            The private pointer is private to the caller of the client
 246            library (the application), not private to the library
 247         */
 248         struct {
 249                 void (*fn)(struct smbcli_request *);
 250                 void *private_data;
 251         } async;
 252 };
 253
 254 /* useful way of catching wct errors with file and line number */
 255 #define SMBCLI_CHECK_MIN_WCT(req, wcount) if ((req)->in.wct < (wcount)) { \
 256       DEBUG(1,("Unexpected WCT %d at %s(%d) - expected min %d\n", (req)->in.wct, __FILE__, __LINE__, wcount)); \
 257       req->status = NT_STATUS_INVALID_PARAMETER; \
 258       goto failed; \
 259 }
 260
 261 #define SMBCLI_CHECK_WCT(req, wcount) if ((req)->in.wct != (wcount)) { \
 262       DEBUG(1,("Unexpected WCT %d at %s(%d) - expected %d\n", (req)->in.wct, __FILE__, __LINE__, wcount)); \
 263       req->status = NT_STATUS_INVALID_PARAMETER; \
 264       goto failed; \
 265 }
 266
 267 NTSTATUS smb_raw_read_recv(struct smbcli_request *req, union smb_read *parms);
 268 struct smbcli_request *smb_raw_read_send(struct smbcli_tree *tree, union smb_read *parms);
 269 NTSTATUS smb_raw_trans_recv(struct smbcli_request *req,
 270                              TALLOC_CTX *mem_ctx,
 271                              struct smb_trans2 *parms);
 272 size_t smb_raw_max_trans_data(struct smbcli_tree *tree, size_t param_size);
 273 struct smbcli_request *smb_raw_trans_send(struct smbcli_tree *tree, struct smb_trans2 *parms);
 274 NTSTATUS smbcli_request_destroy(struct smbcli_request *req);
 275 struct smbcli_request *smb_raw_write_send(struct smbcli_tree *tree, union smb_write *parms);
 276 NTSTATUS smb_raw_write_recv(struct smbcli_request *req, union smb_write *parms);
 277 struct smbcli_request *smb_raw_close_send(struct smbcli_tree *tree, union smb_close *parms);
 278 NTSTATUS smb_raw_open_recv(struct smbcli_request *req, TALLOC_CTX *mem_ctx, union smb_open *parms);
 279 struct smbcli_request *smb_raw_open_send(struct smbcli_tree *tree, union smb_open *parms);
 280
 281 bool smbcli_transport_process(struct smbcli_transport *transport);
 282 const char *smbcli_errstr(struct smbcli_tree *tree);
 283 NTSTATUS smb_raw_fsinfo(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_fsinfo *fsinfo);
 284 NTSTATUS smb_raw_setfsinfo(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_setfsinfo *set_fsinfo);
 285 NTSTATUS smb_raw_pathinfo(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_fileinfo *parms);
 286 NTSTATUS smb_raw_shadow_data(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, struct smb_shadow_copy *info);
 287 NTSTATUS smb_raw_fileinfo(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_fileinfo *parms);
 288 struct smbcli_tree *smbcli_tree_init(struct smbcli_session *session, TALLOC_CTX *parent_ctx, bool primary);
 289 NTSTATUS smb_raw_tcon(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_tcon *parms);
 290 void smbcli_oplock_handler(struct smbcli_transport *transport,
 291                         bool (*handler)(struct smbcli_transport *, uint16_t, uint16_t, uint8_t, void *),
 292                         void *private_data);
 293 void smbcli_transport_idle_handler(struct smbcli_transport *transport,
 294                                    void (*idle_func)(struct smbcli_transport *, void *),
 295                                    uint64_t period,
 296                                    void *private_data);
 297 NTSTATUS smbcli_request_simple_recv(struct smbcli_request *req);
 298 bool smbcli_oplock_ack(struct smbcli_tree *tree, uint16_t fnum, uint16_t ack_level);
 299 NTSTATUS smb_raw_open(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_open *parms);
 300 NTSTATUS smb_raw_close(struct smbcli_tree *tree, union smb_close *parms);
 301 NTSTATUS smb_raw_unlink(struct smbcli_tree *tree, union smb_unlink *parms);
 302 NTSTATUS smb_raw_chkpath(struct smbcli_tree *tree, union smb_chkpath *parms);
 303 NTSTATUS smb_raw_mkdir(struct smbcli_tree *tree, union smb_mkdir *parms);
 304 NTSTATUS smb_raw_rmdir(struct smbcli_tree *tree, struct smb_rmdir *parms);
 305 NTSTATUS smb_raw_rename(struct smbcli_tree *tree, union smb_rename *parms);
 306 NTSTATUS smb_raw_seek(struct smbcli_tree *tree, union smb_seek *parms);
 307 NTSTATUS smb_raw_read(struct smbcli_tree *tree, union smb_read *parms);
 308 NTSTATUS smb_raw_write(struct smbcli_tree *tree, union smb_write *parms);
 309 NTSTATUS smb_raw_lock(struct smbcli_tree *tree, union smb_lock *parms);
 310 NTSTATUS smb_raw_setpathinfo(struct smbcli_tree *tree, union smb_setfileinfo *parms);
 311 NTSTATUS smb_raw_setfileinfo(struct smbcli_tree *tree, union smb_setfileinfo *parms);
 312
 313 struct smbcli_request *smb_raw_changenotify_send(struct smbcli_tree *tree, union smb_notify *parms);
 314 NTSTATUS smb_raw_changenotify_recv(struct smbcli_request *req, TALLOC_CTX *mem_ctx, union smb_notify *parms);
 315
 316 NTSTATUS smb_tree_disconnect(struct smbcli_tree *tree);
 317 NTSTATUS smbcli_nt_error(struct smbcli_tree *tree);
 318 NTSTATUS smb_raw_exit(struct smbcli_session *session);
 319 NTSTATUS smb_raw_pathinfo_recv(struct smbcli_request *req,
 320                                TALLOC_CTX *mem_ctx,
 321                                union smb_fileinfo *parms);
 322 struct smbcli_request *smb_raw_pathinfo_send(struct smbcli_tree *tree,
 323                                              union smb_fileinfo *parms);
 324 struct smbcli_request *smb_raw_setpathinfo_send(struct smbcli_tree *tree,
 325                                              union smb_setfileinfo *parms);
 326 struct smbcli_request *smb_raw_echo_send(struct smbcli_transport *transport,
 327                                          struct smb_echo *p);
 328 NTSTATUS smb_raw_search_first(struct smbcli_tree *tree,
 329                               TALLOC_CTX *mem_ctx,
 330                               union smb_search_first *io, void *private_data,
 331                               smbcli_search_callback callback);
 332 NTSTATUS smb_raw_flush(struct smbcli_tree *tree, union smb_flush *parms);
 333
 334 NTSTATUS smb_raw_trans(struct smbcli_tree *tree,
 335                        TALLOC_CTX *mem_ctx,
 336                        struct smb_trans2 *parms);
 337
 338 #endif /* __LIBCLI_RAW__H__ */