sys/netproto/smb/smb_usr.c

   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_usr.c,v 1.1.2.1 2001/05/22 08:32:34 bp Exp $
  33  * $DragonFly: src/sys/netproto/smb/smb_usr.c,v 1.4 2006/11/26 19:12:25 pavalos Exp $
  34  */
  35 #include <sys/param.h>
  36 #include <sys/malloc.h>
  37 #include <sys/kernel.h>
  38 #include <sys/systm.h>
  39 #include <sys/conf.h>
  40 #include <sys/proc.h>
  41 #include <sys/fcntl.h>
  42 #include <sys/socket.h>
  43 #include <sys/socketvar.h>
  44 #include <sys/sysctl.h>
  45
  46 #include <sys/iconv.h>
  47
  48 #include "smb.h"
  49 #include "smb_conn.h"
  50 #include "smb_rq.h"
  51 #include "smb_subr.h"
  52 #include "smb_dev.h"
  53
  54 /*
  55  * helpers for nsmb device. Can be moved to the smb_dev.c file.
  56  */
  57 static void smb_usr_vcspec_free(struct smb_vcspec *spec);
  58
  59 static int
  60 smb_usr_vc2spec(struct smbioc_ossn *dp, struct smb_vcspec *spec)
  61 {
  62         int flags = 0;
  63
  64         bzero(spec, sizeof(*spec));
  65         if (dp->ioc_user[0] == 0)
  66                 return EINVAL;
  67         if (dp->ioc_server == NULL)
  68                 return EINVAL;
  69         if (dp->ioc_localcs[0] == 0) {
  70                 SMBERROR("no local charset ?\n");
  71                 return EINVAL;
  72         }
  73
  74         spec->sap = smb_memdupin(dp->ioc_server, dp->ioc_svlen);
  75         if (spec->sap == NULL)
  76                 return ENOMEM;
  77         if (dp->ioc_local) {
  78                 spec->lap = smb_memdupin(dp->ioc_local, dp->ioc_lolen);
  79                 if (spec->lap == NULL) {
  80                         smb_usr_vcspec_free(spec);
  81                         return ENOMEM;
  82                 }
  83         }
  84         spec->srvname = dp->ioc_srvname;
  85         spec->pass = dp->ioc_password;
  86         spec->domain = dp->ioc_workgroup;
  87         spec->username = dp->ioc_user;
  88         spec->mode = dp->ioc_mode;
  89         spec->rights = dp->ioc_rights;
  90         spec->owner = dp->ioc_owner;
  91         spec->group = dp->ioc_group;
  92         spec->localcs = dp->ioc_localcs;
  93         spec->servercs = dp->ioc_servercs;
  94         if (dp->ioc_opt & SMBVOPT_PRIVATE)
  95                 flags |= SMBV_PRIVATE;
  96         if (dp->ioc_opt & SMBVOPT_SINGLESHARE)
  97                 flags |= SMBV_PRIVATE | SMBV_SINGLESHARE;
  98         spec->flags = flags;
  99         return 0;
 100 }
 101
 102 static void
 103 smb_usr_vcspec_free(struct smb_vcspec *spec)
 104 {
 105         if (spec->sap)
 106                 smb_memfree(spec->sap);
 107         if (spec->lap)
 108                 smb_memfree(spec->lap);
 109 }
 110
 111 static int
 112 smb_usr_share2spec(struct smbioc_oshare *dp, struct smb_sharespec *spec)
 113 {
 114         bzero(spec, sizeof(*spec));
 115         spec->mode = dp->ioc_mode;
 116         spec->rights = dp->ioc_rights;
 117         spec->owner = dp->ioc_owner;
 118         spec->group = dp->ioc_group;
 119         spec->name = dp->ioc_share;
 120         spec->stype = dp->ioc_stype;
 121         spec->pass = dp->ioc_password;
 122         return 0;
 123 }
 124
 125 int
 126 smb_usr_lookup(struct smbioc_lookup *dp, struct smb_cred *scred,
 127         struct smb_vc **vcpp, struct smb_share **sspp)
 128 {
 129         struct smb_vc *vcp = NULL;
 130         struct smb_vcspec vspec;
 131         struct smb_sharespec sspec, *sspecp = NULL;
 132         int error;
 133
 134         if (dp->ioc_level < SMBL_VC || dp->ioc_level > SMBL_SHARE)
 135                 return EINVAL;
 136         error = smb_usr_vc2spec(&dp->ioc_ssn, &vspec);
 137         if (error)
 138                 return error;
 139         if (dp->ioc_flags & SMBLK_CREATE)
 140                 vspec.flags |= SMBV_CREATE;
 141
 142         if (dp->ioc_level >= SMBL_SHARE) {
 143                 error = smb_usr_share2spec(&dp->ioc_sh, &sspec);
 144                 if (error)
 145                         goto out;
 146                 sspecp = &sspec;
 147         }
 148         error = smb_sm_lookup(&vspec, sspecp, scred, &vcp);
 149         if (error == 0) {
 150                 *vcpp = vcp;
 151                 *sspp = vspec.ssp;
 152         }
 153 out:
 154         smb_usr_vcspec_free(&vspec);
 155         return error;
 156 }
 157
 158 /*
 159  * Connect to the resource specified by smbioc_ossn structure.
 160  * It may either find an existing connection or try to establish a new one.
 161  * If no errors occured smb_vc returned locked and referenced.
 162  */
 163 int
 164 smb_usr_opensession(struct smbioc_ossn *dp, struct smb_cred *scred,
 165         struct smb_vc **vcpp)
 166 {
 167         struct smb_vc *vcp = NULL;
 168         struct smb_vcspec vspec;
 169         int error;
 170
 171         error = smb_usr_vc2spec(dp, &vspec);
 172         if (error)
 173                 return error;
 174         if (dp->ioc_opt & SMBVOPT_CREATE)
 175                 vspec.flags |= SMBV_CREATE;
 176
 177         error = smb_sm_lookup(&vspec, NULL, scred, &vcp);
 178         smb_usr_vcspec_free(&vspec);
 179         return error;
 180 }
 181
 182 int
 183 smb_usr_openshare(struct smb_vc *vcp, struct smbioc_oshare *dp,
 184         struct smb_cred *scred, struct smb_share **sspp)
 185 {
 186         struct smb_share *ssp;
 187         struct smb_sharespec shspec;
 188         int error;
 189
 190         error = smb_usr_share2spec(dp, &shspec);
 191         if (error)
 192                 return error;
 193         error = smb_vc_lookupshare(vcp, &shspec, scred, &ssp);
 194         if (error == 0) {
 195                 *sspp = ssp;
 196                 return 0;
 197         }
 198         if ((dp->ioc_opt & SMBSOPT_CREATE) == 0)
 199                 return error;
 200         error = smb_share_create(vcp, &shspec, scred, &ssp);
 201         if (error)
 202                 return error;
 203         error = smb_smb_treeconnect(ssp, scred);
 204         if (error) {
 205                 smb_share_put(ssp, scred);
 206         } else
 207                 *sspp = ssp;
 208         return error;
 209 }
 210
 211 int
 212 smb_usr_simplerequest(struct smb_share *ssp, struct smbioc_rq *dp,
 213         struct smb_cred *scred)
 214 {
 215         struct smb_rq rq, *rqp = &rq;
 216         struct mbchain *mbp;
 217         struct mdchain *mdp;
 218         u_int8_t wc;
 219         u_int16_t bc;
 220         int error;
 221
 222         switch (dp->ioc_cmd) {
 223             case SMB_COM_TRANSACTION2:
 224             case SMB_COM_TRANSACTION2_SECONDARY:
 225             case SMB_COM_CLOSE_AND_TREE_DISC:
 226             case SMB_COM_TREE_CONNECT:
 227             case SMB_COM_TREE_DISCONNECT:
 228             case SMB_COM_NEGOTIATE:
 229             case SMB_COM_SESSION_SETUP_ANDX:
 230             case SMB_COM_LOGOFF_ANDX:
 231             case SMB_COM_TREE_CONNECT_ANDX:
 232                 return EPERM;
 233         }
 234         error = smb_rq_init(rqp, SSTOCP(ssp), dp->ioc_cmd, scred);
 235         if (error)
 236                 return error;
 237         mbp = &rqp->sr_rq;
 238         smb_rq_wstart(rqp);
 239         error = mb_put_mem(mbp, dp->ioc_twords, dp->ioc_twc * 2, MB_MUSER);
 240         if (error)
 241                 goto bad;
 242         smb_rq_wend(rqp);
 243         smb_rq_bstart(rqp);
 244         error = mb_put_mem(mbp, dp->ioc_tbytes, dp->ioc_tbc, MB_MUSER);
 245         if (error)
 246                 goto bad;
 247         smb_rq_bend(rqp);
 248         error = smb_rq_simple(rqp);
 249         if (error)
 250                 goto bad;
 251         mdp = &rqp->sr_rp;
 252         md_get_uint8(mdp, &wc);
 253         dp->ioc_rwc = wc;
 254         wc *= 2;
 255         if (wc > dp->ioc_rpbufsz) {
 256                 error = EBADRPC;
 257                 goto bad;
 258         }
 259         error = md_get_mem(mdp, dp->ioc_rpbuf, wc, MB_MUSER);
 260         if (error)
 261                 goto bad;
 262         md_get_uint16le(mdp, &bc);
 263         if ((wc + bc) > dp->ioc_rpbufsz) {
 264                 error = EBADRPC;
 265                 goto bad;
 266         }
 267         dp->ioc_rbc = bc;
 268         error = md_get_mem(mdp, dp->ioc_rpbuf + wc, bc, MB_MUSER);
 269 bad:
 270         dp->ioc_errclass = rqp->sr_errclass;
 271         dp->ioc_serror = rqp->sr_serror;
 272         dp->ioc_error = rqp->sr_error;
 273         smb_rq_done(rqp);
 274         return error;
 275
 276 }
 277
 278 static int
 279 smb_cpdatain(struct mbchain *mbp, int len, caddr_t data)
 280 {
 281         int error;
 282
 283         if (len == 0)
 284                 return 0;
 285         error = mb_init(mbp);
 286         if (error)
 287                 return error;
 288         return mb_put_mem(mbp, data, len, MB_MUSER);
 289 }
 290
 291 int
 292 smb_usr_t2request(struct smb_share *ssp, struct smbioc_t2rq *dp,
 293         struct smb_cred *scred)
 294 {
 295         struct smb_t2rq t2, *t2p = &t2;
 296         struct mdchain *mdp;
 297         int error, len;
 298
 299         if (dp->ioc_setupcnt > 3)
 300                 return EINVAL;
 301         error = smb_t2_init(t2p, SSTOCP(ssp), dp->ioc_setup[0], scred);
 302         if (error)
 303                 return error;
 304         len = t2p->t2_setupcount = dp->ioc_setupcnt;
 305         if (len > 1)
 306                 t2p->t2_setupdata = dp->ioc_setup;
 307         if (dp->ioc_name) {
 308                 t2p->t_name = smb_strdupin(dp->ioc_name, 128);
 309                 if (t2p->t_name == NULL) {
 310                         error = ENOMEM;
 311                         goto bad;
 312                 }
 313         }
 314         t2p->t2_maxscount = 0;
 315         t2p->t2_maxpcount = dp->ioc_rparamcnt;
 316         t2p->t2_maxdcount = dp->ioc_rdatacnt;
 317         error = smb_cpdatain(&t2p->t2_tparam, dp->ioc_tparamcnt, dp->ioc_tparam);
 318         if (error)
 319                 goto bad;
 320         error = smb_cpdatain(&t2p->t2_tdata, dp->ioc_tdatacnt, dp->ioc_tdata);
 321         if (error)
 322                 goto bad;
 323         error = smb_t2_request(t2p);
 324         if (error)
 325                 goto bad;
 326         mdp = &t2p->t2_rparam;
 327         if (mdp->md_top) {
 328                 len = m_fixhdr(mdp->md_top);
 329                 if (len > dp->ioc_rparamcnt) {
 330                         error = EMSGSIZE;
 331                         goto bad;
 332                 }
 333                 dp->ioc_rparamcnt = len;
 334                 error = md_get_mem(mdp, dp->ioc_rparam, len, MB_MUSER);
 335                 if (error)
 336                         goto bad;
 337         } else
 338                 dp->ioc_rparamcnt = 0;
 339         mdp = &t2p->t2_rdata;
 340         if (mdp->md_top) {
 341                 len = m_fixhdr(mdp->md_top);
 342                 if (len > dp->ioc_rdatacnt) {
 343                         error = EMSGSIZE;
 344                         goto bad;
 345                 }
 346                 dp->ioc_rdatacnt = len;
 347                 error = md_get_mem(mdp, dp->ioc_rdata, len, MB_MUSER);
 348         } else
 349                 dp->ioc_rdatacnt = 0;
 350 bad:
 351         if (t2p->t_name)
 352                 smb_strfree(t2p->t_name);
 353         smb_t2_done(t2p);
 354         return error;
 355 }