Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/netsmb/smb_conn.h
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2000-2001 Boris Popov 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 /* 32 * Two levels of connection hierarchy 33 */ 34 #define SMBL_SM 0 35 #define SMBL_VC 1 36 #define SMBL_SHARE 2 37 #define SMBL_NUM 3 38 #define SMBL_NONE (-1) 39 40 #define SMB_CS_NONE 0x0000 41 #define SMB_CS_UPPER 0x0001 /* convert passed string to upper case */ 42 #define SMB_CS_LOWER 0x0002 /* convert passed string to lower case */ 43 44 /* 45 * Common object flags 46 */ 47 #define SMBO_GONE 0x1000000 48 49 /* 50 * access modes 51 */ 52 #define SMBM_READ 0400 /* read conn attrs.(like list shares) */ 53 #define SMBM_WRITE 0200 /* modify conn attrs */ 54 #define SMBM_EXEC 0100 /* can send SMB requests */ 55 #define SMBM_READGRP 0040 56 #define SMBM_WRITEGRP 0020 57 #define SMBM_EXECGRP 0010 58 #define SMBM_READOTH 0004 59 #define SMBM_WRITEOTH 0002 60 #define SMBM_EXECOTH 0001 61 #define SMBM_MASK 0777 62 #define SMBM_EXACT 010000 /* check for specified mode exactly */ 63 #define SMBM_ALL (SMBM_READ | SMBM_WRITE | SMBM_EXEC) 64 #define SMBM_DEFAULT (SMBM_READ | SMBM_WRITE | SMBM_EXEC) 65 #define SMBM_ANY_OWNER ((uid_t)-1) 66 #define SMBM_ANY_GROUP ((gid_t)-1) 67 68 /* 69 * VC flags 70 */ 71 #define SMBV_PERMANENT 0x0002 72 #define SMBV_LONGNAMES 0x0004 /* connection is configured to use long names */ 73 #define SMBV_ENCRYPT 0x0008 /* server asked for encrypted password */ 74 #define SMBV_WIN95 0x0010 /* used to apply bugfixes for this OS */ 75 #define SMBV_PRIVATE 0x0020 /* connection can be used only by creator */ 76 #define SMBV_RECONNECTING 0x0040 /* conn is in the process of reconnection */ 77 #define SMBV_SINGLESHARE 0x0080 /* only one share connecting should be allowed */ 78 #define SMBV_CREATE 0x0100 /* lookup for create operation */ 79 /*#define SMBV_FAILED 0x0200*/ /* last reconnect attempt has failed */ 80 #define SMBV_UNICODE 0x0400 /* connection is configured to use Unicode */ 81 82 /* 83 * smb_share flags 84 */ 85 #define SMBS_PERMANENT 0x0001 86 #define SMBS_RECONNECTING 0x0002 87 #define SMBS_CONNECTED 0x0004 88 89 /* 90 * share types 91 */ 92 #define SMB_ST_DISK 0x0 /* A: */ 93 #define SMB_ST_PRINTER 0x1 /* LPT: */ 94 #define SMB_ST_PIPE 0x2 /* IPC */ 95 #define SMB_ST_COMM 0x3 /* COMM */ 96 #define SMB_ST_ANY 0x4 97 #define SMB_ST_MAX 0x4 98 #define SMB_ST_NONE 0xff /* not a part of protocol */ 99 100 /* 101 * Negotiated protocol parameters 102 */ 103 struct smb_sopt { 104 int sv_proto; 105 int16_t sv_tz; /* offset in min relative to UTC */ 106 u_int32_t sv_maxtx; /* maximum transmit buf size */ 107 u_char sv_sm; /* security mode */ 108 u_int16_t sv_maxmux; /* max number of outstanding rq's */ 109 u_int16_t sv_maxvcs; /* max number of VCs */ 110 u_int16_t sv_rawmode; 111 u_int32_t sv_maxraw; /* maximum raw-buffer size */ 112 u_int32_t sv_skey; /* session key */ 113 u_int32_t sv_caps; /* capabilities SMB_CAP_ */ 114 }; 115 116 /* 117 * network IO daemon states 118 */ 119 enum smbiod_state { 120 SMBIOD_ST_NOTCONN, /* no connect request was made */ 121 SMBIOD_ST_RECONNECT, /* a [re]connect attempt is in progress */ 122 SMBIOD_ST_TRANACTIVE, /* transport level is up */ 123 SMBIOD_ST_VCACTIVE, /* session established */ 124 SMBIOD_ST_DEAD /* connection broken, transport is down */ 125 }; 126 127 /* 128 * Info structures 129 */ 130 #define SMB_INFO_NONE 0 131 #define SMB_INFO_VC 2 132 #define SMB_INFO_SHARE 3 133 134 struct smb_vc_info { 135 int itype; 136 int usecount; 137 uid_t uid; /* user id of connection */ 138 gid_t gid; /* group of connection */ 139 mode_t mode; /* access mode */ 140 int flags; 141 enum smbiod_state iodstate; 142 struct smb_sopt sopt; 143 char srvname[SMB_MAXSRVNAMELEN + 1]; 144 char vcname[128]; 145 }; 146 147 struct smb_share_info { 148 int itype; 149 int usecount; 150 u_short tid; /* TID */ 151 int type; /* share type */ 152 uid_t uid; /* user id of connection */ 153 gid_t gid; /* group of connection */ 154 mode_t mode; /* access mode */ 155 int flags; 156 char sname[128]; 157 }; 158 159 #ifdef _KERNEL 160 161 #include <netsmb/smb_subr.h> 162 #include <sys/param.h> 163 #include <sys/lock.h> 164 #include <sys/condvar.h> 165 #include <sys/sx.h> 166 167 #define CONNADDREQ(a1,a2) ((a1)->sa_len == (a2)->sa_len && \ 168 bcmp(a1, a2, (a1)->sa_len) == 0) 169 170 struct smb_vc; 171 struct smb_share; 172 struct smb_cred; 173 struct smb_rq; 174 struct mbdata; 175 struct smbioc_oshare; 176 struct smbioc_ossn; 177 struct uio; 178 179 TAILQ_HEAD(smb_rqhead, smb_rq); 180 181 #define SMB_DEFRQTIMO 5 182 183 #define SMB_DIALECT(vcp) ((vcp)->vc_sopt.sv_proto) 184 185 struct smb_tran_desc; 186 187 /* 188 * Connection object 189 */ 190 struct smb_connobj; 191 192 typedef void smb_co_gone_t (struct smb_connobj *cp, struct smb_cred *scred); 193 typedef void smb_co_free_t (struct smb_connobj *cp); 194 195 struct smb_connobj { 196 struct cv co_lock; 197 struct thread *co_locker; 198 struct sx co_interlock; 199 int co_lockcnt; 200 int co_level; /* SMBL_ */ 201 int co_flags; 202 int co_usecount; 203 struct smb_connobj * co_parent; 204 SLIST_HEAD(,smb_connobj)co_children; 205 SLIST_ENTRY(smb_connobj)co_next; 206 smb_co_gone_t * co_gone; 207 smb_co_free_t * co_free; 208 }; 209 210 #define SMBCO_FOREACH(var, cp) SLIST_FOREACH((var), &(cp)->co_children, co_next) 211 212 /* 213 * Virtual Circuit (session) to a server. 214 * This is the most (over)complicated part of SMB protocol. 215 * For the user security level (usl), each session with different remote 216 * user name has its own VC. 217 * It is unclear however, should share security level (ssl) allow additional 218 * VCs, because user name is not used and can be the same. On other hand, 219 * multiple VCs allows us to create separate sessions to server on a per 220 * user basis. 221 */ 222 223 /* 224 * This lock protects vc_flags 225 */ 226 #define SMBC_ST_LOCK(vcp) smb_sl_lock(&(vcp)->vc_stlock) 227 #define SMBC_ST_UNLOCK(vcp) smb_sl_unlock(&(vcp)->vc_stlock) 228 229 struct smb_vc { 230 struct smb_connobj obj; 231 char * vc_srvname; 232 struct sockaddr*vc_paddr; /* server addr */ 233 struct sockaddr*vc_laddr; /* local addr, if any */ 234 char * vc_username; 235 char * vc_pass; /* password for usl case */ 236 char * vc_domain; /* workgroup/primary domain */ 237 238 u_int vc_timo; /* default request timeout */ 239 int vc_maxvcs; /* maximum number of VC per connection */ 240 241 void * vc_tolower; /* local charset */ 242 void * vc_toupper; /* local charset */ 243 void * vc_toserver; /* local charset to server one */ 244 void * vc_tolocal; /* server charset to local one */ 245 void * vc_cp_toserver; /* local charset to server one (using CodePage) */ 246 void * vc_cp_tolocal; /* server charset to local one (using CodePage) */ 247 void * vc_ucs_toserver; /* local charset to server one (using UCS-2) */ 248 void * vc_ucs_tolocal; /* server charset to local one (using UCS-2) */ 249 int vc_number; /* number of this VC from the client side */ 250 int vc_genid; 251 uid_t vc_uid; /* user id of connection */ 252 gid_t vc_grp; /* group of connection */ 253 mode_t vc_mode; /* access mode */ 254 u_short vc_smbuid; /* unique vc id assigned by server */ 255 256 u_char vc_hflags; /* or'ed with flags in the smb header */ 257 u_short vc_hflags2; /* or'ed with flags in the smb header */ 258 void * vc_tdata; /* transport control block */ 259 struct smb_tran_desc *vc_tdesc; 260 int vc_chlen; /* actual challenge length */ 261 u_char vc_ch[SMB_MAXCHALLENGELEN]; 262 u_short vc_mid; /* multiplex id */ 263 struct smb_sopt vc_sopt; /* server options */ 264 int vc_txmax; /* max tx/rx packet size */ 265 int vc_rxmax; /* max readx data size */ 266 int vc_wxmax; /* max writex data size */ 267 struct smbiod * vc_iod; 268 struct smb_slock vc_stlock; 269 u_int32_t vc_seqno; /* my next sequence number */ 270 u_int8_t *vc_mackey; /* MAC key */ 271 int vc_mackeylen; /* length of MAC key */ 272 }; 273 274 #define vc_maxmux vc_sopt.sv_maxmux 275 #define vc_flags obj.co_flags 276 277 #define SMB_UNICODE_STRINGS(vcp) ((vcp)->vc_hflags2 & SMB_FLAGS2_UNICODE) 278 279 #define SMB_UNICODE_NAME "UCS-2LE" 280 281 /* 282 * smb_share structure describes connection to the given SMB share (tree). 283 * Connection to share is always built on top of the VC. 284 */ 285 286 /* 287 * This lock protects ss_flags 288 */ 289 #define SMBS_ST_LOCK(ssp) smb_sl_lock(&(ssp)->ss_stlock) 290 #define SMBS_ST_LOCKPTR(ssp) (&(ssp)->ss_stlock) 291 #define SMBS_ST_UNLOCK(ssp) smb_sl_unlock(&(ssp)->ss_stlock) 292 293 struct smb_share { 294 struct smb_connobj obj; 295 char * ss_name; 296 u_short ss_tid; /* TID */ 297 int ss_type; /* share type */ 298 uid_t ss_uid; /* user id of connection */ 299 gid_t ss_grp; /* group of connection */ 300 mode_t ss_mode; /* access mode */ 301 int ss_vcgenid; 302 char * ss_pass; /* password to a share, can be null */ 303 struct smb_slock ss_stlock; 304 }; 305 306 #define ss_flags obj.co_flags 307 308 #define CPTOVC(cp) ((struct smb_vc*)(cp)) 309 #define VCTOCP(vcp) (&(vcp)->obj) 310 #define CPTOSS(cp) ((struct smb_share*)(cp)) 311 #define SSTOVC(ssp) CPTOVC(((ssp)->obj.co_parent)) 312 #define SSTOCP(ssp) (&(ssp)->obj) 313 314 struct smb_vcspec { 315 char * srvname; 316 struct sockaddr*sap; 317 struct sockaddr*lap; 318 int flags; 319 char * username; 320 char * pass; 321 char * domain; 322 mode_t mode; 323 mode_t rights; 324 uid_t owner; 325 gid_t group; 326 char * localcs; 327 char * servercs; 328 struct smb_sharespec *shspec; 329 struct smb_share *ssp; /* returned */ 330 /* 331 * The rest is an internal data 332 */ 333 struct smb_cred *scred; 334 }; 335 336 struct smb_sharespec { 337 char * name; 338 char * pass; 339 mode_t mode; 340 mode_t rights; 341 uid_t owner; 342 gid_t group; 343 int stype; 344 /* 345 * The rest is an internal data 346 */ 347 struct smb_cred *scred; 348 }; 349 350 /* 351 * Session level functions 352 */ 353 int smb_sm_init(void); 354 int smb_sm_done(void); 355 int smb_sm_lookup(struct smb_vcspec *vcspec, 356 struct smb_sharespec *shspec, struct smb_cred *scred, 357 struct smb_vc **vcpp); 358 359 /* 360 * Connection object 361 */ 362 void smb_co_ref(struct smb_connobj *cp); 363 void smb_co_rele(struct smb_connobj *cp, struct smb_cred *scred); 364 int smb_co_get(struct smb_connobj *cp, struct smb_cred *scred); 365 void smb_co_put(struct smb_connobj *cp, struct smb_cred *scred); 366 int smb_co_lock(struct smb_connobj *cp); 367 void smb_co_unlock(struct smb_connobj *cp); 368 369 /* 370 * session level functions 371 */ 372 int smb_vc_create(struct smb_vcspec *vcspec, 373 struct smb_cred *scred, struct smb_vc **vcpp); 374 int smb_vc_connect(struct smb_vc *vcp, struct smb_cred *scred); 375 int smb_vc_access(struct smb_vc *vcp, struct smb_cred *scred, mode_t mode); 376 int smb_vc_get(struct smb_vc *vcp, struct smb_cred *scred); 377 void smb_vc_put(struct smb_vc *vcp, struct smb_cred *scred); 378 void smb_vc_ref(struct smb_vc *vcp); 379 void smb_vc_rele(struct smb_vc *vcp, struct smb_cred *scred); 380 int smb_vc_lock(struct smb_vc *vcp); 381 void smb_vc_unlock(struct smb_vc *vcp); 382 int smb_vc_lookupshare(struct smb_vc *vcp, struct smb_sharespec *shspec, 383 struct smb_cred *scred, struct smb_share **sspp); 384 const char * smb_vc_getpass(struct smb_vc *vcp); 385 u_short smb_vc_nextmid(struct smb_vc *vcp); 386 387 /* 388 * share level functions 389 */ 390 int smb_share_create(struct smb_vc *vcp, struct smb_sharespec *shspec, 391 struct smb_cred *scred, struct smb_share **sspp); 392 int smb_share_access(struct smb_share *ssp, struct smb_cred *scred, mode_t mode); 393 void smb_share_ref(struct smb_share *ssp); 394 void smb_share_rele(struct smb_share *ssp, struct smb_cred *scred); 395 int smb_share_get(struct smb_share *ssp, struct smb_cred *scred); 396 void smb_share_put(struct smb_share *ssp, struct smb_cred *scred); 397 int smb_share_lock(struct smb_share *ssp); 398 void smb_share_unlock(struct smb_share *ssp); 399 void smb_share_invalidate(struct smb_share *ssp); 400 int smb_share_valid(struct smb_share *ssp); 401 const char * smb_share_getpass(struct smb_share *ssp); 402 403 /* 404 * SMB protocol level functions 405 */ 406 int smb_smb_negotiate(struct smb_vc *vcp, struct smb_cred *scred); 407 int smb_smb_ssnsetup(struct smb_vc *vcp, struct smb_cred *scred); 408 int smb_smb_ssnclose(struct smb_vc *vcp, struct smb_cred *scred); 409 int smb_smb_treeconnect(struct smb_share *ssp, struct smb_cred *scred); 410 int smb_smb_treedisconnect(struct smb_share *ssp, struct smb_cred *scred); 411 int smb_read(struct smb_share *ssp, u_int16_t fid, struct uio *uio, 412 struct smb_cred *scred); 413 int smb_write(struct smb_share *ssp, u_int16_t fid, struct uio *uio, 414 struct smb_cred *scred); 415 int smb_smb_echo(struct smb_vc *vcp, struct smb_cred *scred); 416 417 /* 418 * smbiod thread 419 */ 420 421 #define SMBIOD_EV_NEWRQ 0x0001 422 #define SMBIOD_EV_SHUTDOWN 0x0002 423 #define SMBIOD_EV_CONNECT 0x0003 424 #define SMBIOD_EV_DISCONNECT 0x0004 425 #define SMBIOD_EV_TREECONNECT 0x0005 426 #define SMBIOD_EV_MASK 0x00ff 427 #define SMBIOD_EV_SYNC 0x0100 428 #define SMBIOD_EV_PROCESSING 0x0200 429 430 struct smbiod_event { 431 int ev_type; 432 int ev_error; 433 void * ev_ident; 434 STAILQ_ENTRY(smbiod_event) ev_link; 435 }; 436 437 #define SMBIOD_SHUTDOWN 0x0001 438 439 struct smbiod { 440 int iod_id; 441 int iod_flags; 442 enum smbiod_state iod_state; 443 int iod_muxcnt; /* number of active outstanding requests */ 444 int iod_sleeptimo; 445 struct smb_vc * iod_vc; 446 struct smb_slock iod_rqlock; /* iod_rqlist, iod_muxwant */ 447 struct smb_rqhead iod_rqlist; /* list of outstanding requests */ 448 int iod_muxwant; 449 struct proc * iod_p; 450 struct thread * iod_td; 451 struct smb_cred iod_scred; 452 struct smb_slock iod_evlock; /* iod_evlist */ 453 STAILQ_HEAD(,smbiod_event) iod_evlist; 454 struct timespec iod_lastrqsent; 455 struct timespec iod_pingtimo; 456 }; 457 458 int smb_iod_init(void); 459 int smb_iod_done(void); 460 int smb_iod_create(struct smb_vc *vcp); 461 int smb_iod_destroy(struct smbiod *iod); 462 int smb_iod_request(struct smbiod *iod, int event, void *ident); 463 int smb_iod_addrq(struct smb_rq *rqp); 464 int smb_iod_waitrq(struct smb_rq *rqp); 465 int smb_iod_removerq(struct smb_rq *rqp); 466 467 #endif /* _KERNEL */
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