sys/netproto/smb/smb_conn.h

   1 /*
   2  * Copyright (c) 2000-2001 Boris Popov
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *    This product includes software developed by Boris Popov.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $FreeBSD: src/sys/netsmb/smb_conn.h,v 1.1.2.3 2002/04/23 03:45:01 bp Exp $
  33  */
  34
  35 #ifndef _NETPROTO_SMB_SMB_CONN_H_
  36 #define _NETPROTO_SMB_SMB_CONN_H_
  37
  38 #ifndef _NETINET_IN_H_
  39 #include <netinet/in.h>
  40 #endif
  41
  42 /*
  43  * Two levels of connection hierarchy
  44  */
  45 #define SMBL_SM         0
  46 #define SMBL_VC         1
  47 #define SMBL_SHARE      2
  48 #define SMBL_NUM        3
  49 #define SMBL_NONE       (-1)
  50
  51 #define SMB_CS_NONE     0x0000
  52 #define SMB_CS_UPPER    0x0001          /* convert passed string to upper case */
  53 #define SMB_CS_LOWER    0x0002          /* convert passed string to lower case */
  54
  55 /*
  56  * Common object flags
  57  */
  58 #define SMBO_GONE               0x1000000
  59
  60 /*
  61  * access modes
  62  */
  63 #define SMBM_READ               0400    /* read conn attrs.(like list shares) */
  64 #define SMBM_WRITE              0200    /* modify conn attrs */
  65 #define SMBM_EXEC               0100    /* can send SMB requests */
  66 #define SMBM_READGRP            0040
  67 #define SMBM_WRITEGRP           0020
  68 #define SMBM_EXECGRP            0010
  69 #define SMBM_READOTH            0004
  70 #define SMBM_WRITEOTH           0002
  71 #define SMBM_EXECOTH            0001
  72 #define SMBM_MASK               0777
  73 #define SMBM_EXACT              010000  /* check for specified mode exactly */
  74 #define SMBM_ALL                (SMBM_READ | SMBM_WRITE | SMBM_EXEC)
  75 #define SMBM_DEFAULT            (SMBM_READ | SMBM_WRITE | SMBM_EXEC)
  76 #define SMBM_ANY_OWNER          ((uid_t)-1)
  77 #define SMBM_ANY_GROUP          ((gid_t)-1)
  78
  79 /*
  80  * VC flags
  81  */
  82 #define SMBV_PERMANENT          0x0002
  83 #define SMBV_LONGNAMES          0x0004  /* connection is configured to use long names */
  84 #define SMBV_ENCRYPT            0x0008  /* server asked for encrypted password */
  85 #define SMBV_WIN95              0x0010  /* used to apply bugfixes for this OS */
  86 #define SMBV_PRIVATE            0x0020  /* connection can be used only by creator */
  87 #define SMBV_RECONNECTING       0x0040  /* conn is in the process of reconnection */
  88 #define SMBV_SINGLESHARE        0x0080  /* only one share connecting should be allowed */
  89 #define SMBV_CREATE             0x0100  /* lookup for create operation */
  90 /*#define SMBV_FAILED           0x0200*/        /* last reconnect attempt has failed */
  91 #define SMBV_UNICODE            0x0400  /* connection is configured to use Unicode */
  92
  93
  94 /*
  95  * smb_share flags
  96  */
  97 #define SMBS_PERMANENT          0x0001
  98 #define SMBS_RECONNECTING       0x0002
  99 #define SMBS_CONNECTED          0x0004
 100
 101 /*
 102  * share types
 103  */
 104 #define SMB_ST_DISK             0x0     /* A: */
 105 #define SMB_ST_PRINTER          0x1     /* LPT: */
 106 #define SMB_ST_PIPE             0x2     /* IPC */
 107 #define SMB_ST_COMM             0x3     /* COMM */
 108 #define SMB_ST_ANY              0x4
 109 #define SMB_ST_MAX              0x4
 110 #define SMB_ST_NONE             0xff    /* not a part of protocol */
 111
 112 /*
 113  * Negotiated protocol parameters
 114  */
 115 struct smb_sopt {
 116         int             sv_proto;
 117         int16_t         sv_tz;          /* offset in min relative to UTC */
 118         u_int32_t       sv_maxtx;       /* maximum transmit buf size */
 119         u_char          sv_sm;          /* security mode */
 120         u_int16_t       sv_maxmux;      /* max number of outstanding rq's */
 121         u_int16_t       sv_maxvcs;      /* max number of VCs */
 122         u_int16_t       sv_rawmode;
 123         u_int32_t       sv_maxraw;      /* maximum raw-buffer size */
 124         u_int32_t       sv_skey;        /* session key */
 125         u_int32_t       sv_caps;        /* capabilities SMB_CAP_ */
 126 };
 127
 128 /*
 129  * network IO daemon states
 130  */
 131 enum smbiod_state {
 132         SMBIOD_ST_NOTCONN,      /* no connect request was made */
 133         SMBIOD_ST_RECONNECT,    /* a [re]connect attempt is in progress */
 134         SMBIOD_ST_TRANACTIVE,   /* transport level is up */
 135         SMBIOD_ST_VCACTIVE,     /* session established */
 136         SMBIOD_ST_DEAD          /* connection broken, transport is down */
 137 };
 138
 139
 140 /*
 141  * Info structures
 142  */
 143 #define SMB_INFO_NONE           0
 144 #define SMB_INFO_VC             2
 145 #define SMB_INFO_SHARE          3
 146
 147 struct smb_vc_info {
 148         int             itype;
 149         int             usecount;
 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         enum smbiod_state iodstate;
 155         struct smb_sopt sopt;
 156         char            srvname[SMB_MAXSRVNAMELEN];
 157         char            vcname[128];
 158 };
 159
 160 struct smb_share_info {
 161         int             itype;
 162         int             usecount;
 163         u_short         tid;            /* TID */
 164         int             type;           /* share type */
 165         uid_t           uid;            /* user id of connection */
 166         gid_t           gid;            /* group of connection */
 167         mode_t          mode;           /* access mode */
 168         int             flags;
 169         char            sname[128];
 170 };
 171
 172 #ifdef _KERNEL
 173
 174 #include <sys/lock.h>
 175 #include "smb_subr.h"
 176
 177 #define CONNADDREQ(a1,a2)       ((a1)->sa_len == (a2)->sa_len && \
 178                                  bcmp(a1, a2, (a1)->sa_len) == 0)
 179
 180 struct smb_vc;
 181 struct smb_share;
 182 struct smb_cred;
 183 struct smb_rq;
 184 struct mbdata;
 185 struct smbioc_oshare;
 186 struct smbioc_ossn;
 187 struct uio;
 188
 189 TAILQ_HEAD(smb_rqhead, smb_rq);
 190
 191 #define SMB_DEFRQTIMO   5
 192
 193 #define SMB_DIALECT(vcp)        ((vcp)->vc_sopt.sv_proto)
 194
 195 struct smb_tran_desc;
 196
 197 /*
 198  * Connection object
 199  */
 200 struct smb_connobj;
 201
 202 typedef void smb_co_gone_t (struct smb_connobj *cp, struct smb_cred *scred);
 203 typedef void smb_co_free_t (struct smb_connobj *cp);
 204
 205 #define SMB_CO_LOCK(cp)         smb_sl_lock(&(cp)->co_interlock)
 206 #define SMB_CO_UNLOCK(cp)       smb_sl_unlock(&(cp)->co_interlock)
 207 #define SMB_CO_INTERLOCK(cp)    (&(cp)->co_interlock)
 208
 209 struct smb_connobj {
 210         int                     co_level;       /* SMBL_ */
 211         int                     co_flags;
 212         struct lock             co_lock;
 213         struct smb_slock        co_interlock;
 214         int                     co_usecount;
 215         struct smb_connobj *    co_parent;
 216         SLIST_HEAD(,smb_connobj)co_children;
 217         SLIST_ENTRY(smb_connobj)co_next;
 218         smb_co_gone_t *         co_gone;
 219         smb_co_free_t *         co_free;
 220 };
 221
 222 #define SMBCO_FOREACH(var, cp)  SLIST_FOREACH((var), &(cp)->co_children, co_next)
 223
 224 /*
 225  * Virtual Circuit (session) to a server.
 226  * This is the most (over)complicated part of SMB protocol.
 227  * For the user security level (usl), each session with different remote
 228  * user name has its own VC.
 229  * It is unclear however, should share security level (ssl) allow additional
 230  * VCs, because user name is not used and can be the same. On other hand,
 231  * multiple VCs allows us to create separate sessions to server on a per
 232  * user basis.
 233  */
 234
 235 /*
 236  * This lock protects vc_flags
 237  */
 238 #define SMBC_ST_LOCK(vcp)               smb_sl_lock(&(vcp)->vc_stlock)
 239 #define SMBC_ST_UNLOCK(vcp)             smb_sl_unlock(&(vcp)->vc_stlock)
 240
 241
 242 struct smb_vc {
 243         struct smb_connobj obj;
 244         char *          vc_srvname;
 245         struct sockaddr*vc_paddr;       /* server addr */
 246         struct sockaddr*vc_laddr;       /* local addr, if any */
 247         char *          vc_username;
 248         char *          vc_pass;        /* password for usl case */
 249         char *          vc_domain;      /* workgroup/primary domain */
 250
 251         u_int           vc_timo;        /* default request timeout */
 252         int             vc_maxvcs;      /* maximum number of VC per connection */
 253
 254         void *          vc_tolower;     /* local charset */
 255         void *          vc_toupper;     /* local charset */
 256         void *          vc_toserver;    /* local charset to server one */
 257         void *          vc_tolocal;     /* server charset to local one */
 258         int             vc_number;      /* number of this VC from the client side */
 259         int             vc_genid;
 260         uid_t           vc_uid;         /* user id of connection */
 261         gid_t           vc_grp;         /* group of connection */
 262         mode_t          vc_mode;        /* access mode */
 263         struct tnode *  vc_tnode;       /* backing object */
 264         u_short         vc_smbuid;      /* unique vc id assigned by server */
 265
 266         u_char          vc_hflags;      /* or'ed with flags in the smb header */
 267         u_short         vc_hflags2;     /* or'ed with flags in the smb header */
 268         void *          vc_tdata;       /* transport control block */
 269         struct smb_tran_desc *vc_tdesc;
 270         int             vc_chlen;       /* actual challenge length */
 271         u_char          vc_ch[SMB_MAXCHALLENGELEN];
 272         u_short         vc_mid;         /* multiplex id */
 273         struct smb_sopt vc_sopt;        /* server options */
 274         int             vc_txmax;       /* max tx/rx packet size */
 275         struct smbiod * vc_iod;
 276         struct smb_slock vc_stlock;
 277         u_int32_t       vc_seqno;       /* my next sequence number */
 278         u_int8_t        *vc_mackey;     /* MAC key */
 279         int             vc_mackeylen;   /* length of MAC key */
 280 };
 281
 282 #define vc_maxmux       vc_sopt.sv_maxmux
 283 #define vc_flags        obj.co_flags
 284
 285
 286 /*
 287  * smb_share structure describes connection to the given SMB share (tree).
 288  * Connection to share is always built on top of the VC.
 289  */
 290
 291 /*
 292  * This lock protects ss_flags
 293  */
 294 #define SMBS_ST_LOCK(ssp)       smb_sl_lock(&(ssp)->ss_stlock)
 295 #define SMBS_ST_LOCKPTR(ssp)    (&(ssp)->ss_stlock)
 296 #define SMBS_ST_INTERLOCK(ssp)  (&(ssp)->ss_stlock)
 297 #define SMBS_ST_UNLOCK(ssp)     smb_sl_unlock(&(ssp)->ss_stlock)
 298
 299 struct smb_share {
 300         struct smb_connobj obj;
 301         char *          ss_name;
 302         u_short         ss_tid;         /* TID */
 303         int             ss_type;        /* share type */
 304         uid_t           ss_uid;         /* user id of connection */
 305         gid_t           ss_grp;         /* group of connection */
 306         mode_t          ss_mode;        /* access mode */
 307         int             ss_vcgenid;
 308         char *          ss_pass;        /* password to a share, can be null */
 309         struct smb_slock ss_stlock;
 310 };
 311
 312 #define ss_flags        obj.co_flags
 313
 314 #define CPTOVC(cp)      ((struct smb_vc*)(cp))
 315 #define VCTOCP(vcp)     (&(vcp)->obj)
 316 #define CPTOSS(cp)      ((struct smb_share*)(cp))
 317 #define SSTOVC(ssp)     CPTOVC(((ssp)->obj.co_parent))
 318 #define SSTOCP(ssp)     (&(ssp)->obj)
 319
 320 struct smb_vcspec {
 321         char *          srvname;
 322         struct sockaddr*sap;
 323         struct sockaddr*lap;
 324         int             flags;
 325         char *          username;
 326         char *          pass;
 327         char *          domain;
 328         mode_t          mode;
 329         mode_t          rights;
 330         uid_t           owner;
 331         gid_t           group;
 332         char *          localcs;
 333         char *          servercs;
 334         struct smb_sharespec *shspec;
 335         struct smb_share *ssp;          /* returned */
 336         /*
 337          * The rest is an internal data
 338          */
 339         struct smb_cred *scred;
 340 };
 341
 342 struct smb_sharespec {
 343         char *          name;
 344         char *          pass;
 345         mode_t          mode;
 346         mode_t          rights;
 347         uid_t           owner;
 348         gid_t           group;
 349         int             stype;
 350         /*
 351          * The rest is an internal data
 352          */
 353         struct smb_cred *scred;
 354 };
 355
 356 /*
 357  * Session level functions
 358  */
 359 int  smb_sm_init(void);
 360 int  smb_sm_done(void);
 361 int  smb_sm_lookup(struct smb_vcspec *vcspec,
 362         struct smb_sharespec *shspec, struct smb_cred *scred,
 363         struct smb_vc **vcpp);
 364
 365 /*
 366  * session level functions
 367  */
 368 int  smb_vc_create(struct smb_vcspec *vcspec,
 369         struct smb_cred *scred, struct smb_vc **vcpp);
 370 int  smb_vc_connect(struct smb_vc *vcp, struct smb_cred *scred);
 371 int  smb_vc_access(struct smb_vc *vcp, struct smb_cred *scred, mode_t mode);
 372 int  smb_vc_get(struct smb_vc *vcp, int flags, struct smb_cred *scred);
 373 void smb_vc_put(struct smb_vc *vcp, struct smb_cred *scred);
 374 void smb_vc_ref(struct smb_vc *vcp);
 375 void smb_vc_rele(struct smb_vc *vcp, struct smb_cred *scred);
 376 int  smb_vc_lock(struct smb_vc *vcp, int flags);
 377 void smb_vc_unlock(struct smb_vc *vcp, int flags);
 378 int  smb_vc_lookupshare(struct smb_vc *vcp, struct smb_sharespec *shspec,
 379         struct smb_cred *scred, struct smb_share **sspp);
 380 const char * smb_vc_getpass(struct smb_vc *vcp);
 381 u_short smb_vc_nextmid(struct smb_vc *vcp);
 382
 383 /*
 384  * share level functions
 385  */
 386 int  smb_share_create(struct smb_vc *vcp, struct smb_sharespec *shspec,
 387         struct smb_cred *scred, struct smb_share **sspp);
 388 int  smb_share_access(struct smb_share *ssp, struct smb_cred *scred, mode_t mode);
 389 void smb_share_ref(struct smb_share *ssp);
 390 void smb_share_rele(struct smb_share *ssp, struct smb_cred *scred);
 391 int  smb_share_get(struct smb_share *ssp, int flags, struct smb_cred *scred);
 392 void smb_share_put(struct smb_share *ssp, struct smb_cred *scred);
 393 int  smb_share_lock(struct smb_share *ssp, int flags);
 394 void smb_share_unlock(struct smb_share *ssp, int flags);
 395 void smb_share_invalidate(struct smb_share *ssp);
 396 int  smb_share_valid(struct smb_share *ssp);
 397 const char * smb_share_getpass(struct smb_share *ssp);
 398
 399 /*
 400  * SMB protocol level functions
 401  */
 402 int  smb_smb_negotiate(struct smb_vc *vcp, struct smb_cred *scred);
 403 int  smb_smb_ssnsetup(struct smb_vc *vcp, struct smb_cred *scred);
 404 int  smb_smb_ssnclose(struct smb_vc *vcp, struct smb_cred *scred);
 405 int  smb_smb_treeconnect(struct smb_share *ssp, struct smb_cred *scred);
 406 int  smb_smb_treedisconnect(struct smb_share *ssp, struct smb_cred *scred);
 407 int  smb_read(struct smb_share *ssp, u_int16_t fid, struct uio *uio,
 408         struct smb_cred *scred);
 409 int  smb_write(struct smb_share *ssp, u_int16_t fid, struct uio *uio,
 410         struct smb_cred *scred);
 411 int  smb_smb_echo(struct smb_vc *vcp, struct smb_cred *scred);
 412
 413 /*
 414  * smbiod thread
 415  */
 416
 417 #define SMBIOD_EV_NEWRQ         0x0001
 418 #define SMBIOD_EV_SHUTDOWN      0x0002
 419 #define SMBIOD_EV_CONNECT       0x0003
 420 #define SMBIOD_EV_DISCONNECT    0x0004
 421 #define SMBIOD_EV_TREECONNECT   0x0005
 422 #define SMBIOD_EV_MASK          0x00ff
 423 #define SMBIOD_EV_SYNC          0x0100
 424 #define SMBIOD_EV_PROCESSING    0x0200
 425
 426 struct smbiod_event {
 427         int     ev_type;
 428         int     ev_error;
 429         void *  ev_ident;
 430         STAILQ_ENTRY(smbiod_event)      ev_link;
 431 };
 432
 433 #define SMBIOD_SHUTDOWN         0x0001
 434
 435 struct smbiod {
 436         int                     iod_id;
 437         int                     iod_flags;
 438         enum smbiod_state       iod_state;
 439         int                     iod_muxcnt;     /* number of active outstanding requests */
 440         int                     iod_sleeptimo;
 441         struct smb_vc *         iod_vc;
 442         struct smb_slock        iod_rqlock;     /* iod_rqlist, iod_muxwant */
 443         struct smb_rqhead       iod_rqlist;     /* list of outstanding requests */
 444         int                     iod_muxwant;
 445         struct thread *         iod_td;
 446         struct smb_cred         iod_scred;
 447         struct smb_slock        iod_evlock;     /* iod_evlist */
 448         STAILQ_HEAD(,smbiod_event) iod_evlist;
 449         struct timespec         iod_lastrqsent;
 450         struct timespec         iod_pingtimo;
 451 };
 452
 453 int  smb_iod_init(void);
 454 int  smb_iod_done(void);
 455 int  smb_iod_create(struct smb_vc *vcp);
 456 int  smb_iod_destroy(struct smbiod *iod);
 457 int  smb_iod_request(struct smbiod *iod, int event, void *ident);
 458 int  smb_iod_addrq(struct smb_rq *rqp);
 459 int  smb_iod_waitrq(struct smb_rq *rqp);
 460 int  smb_iod_removerq(struct smb_rq *rqp);
 461
 462 #endif /* _KERNEL */
 463
 464 #endif /* !_NETPROTO_SMB_SMB_CONN_H_ */