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