The Design and Implementation of the FreeBSD Operating System, Second Edition
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_usr.c

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    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 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: releng/6.4/sys/netsmb/smb_usr.c 139823 2005-01-07 01:45:51Z imp $");
   35 
   36 #include <sys/param.h>
   37 #include <sys/malloc.h>
   38 #include <sys/kernel.h>
   39 #include <sys/systm.h>
   40 #include <sys/conf.h>
   41 #include <sys/proc.h>
   42 #include <sys/fcntl.h>
   43 #include <sys/socket.h>
   44 #include <sys/socketvar.h>
   45 #include <sys/sysctl.h>
   46 #include <sys/mbuf.h>
   47 
   48 #include <sys/iconv.h>
   49 
   50 #include <netsmb/smb.h>
   51 #include <netsmb/smb_conn.h>
   52 #include <netsmb/smb_rq.h>
   53 #include <netsmb/smb_subr.h>
   54 #include <netsmb/smb_dev.h>
   55 
   56 /*
   57  * helpers for nsmb device. Can be moved to the smb_dev.c file.
   58  */
   59 static void smb_usr_vcspec_free(struct smb_vcspec *spec);
   60 
   61 static int
   62 smb_usr_vc2spec(struct smbioc_ossn *dp, struct smb_vcspec *spec)
   63 {
   64         int flags = 0;
   65 
   66         bzero(spec, sizeof(*spec));
   67 
   68 #ifdef NETSMB_NO_ANON_USER
   69         if (dp->ioc_user[0] == 0)
   70                 return EINVAL;
   71 #endif
   72 
   73         if (dp->ioc_server == NULL)
   74                 return EINVAL;
   75         if (dp->ioc_localcs[0] == 0) {
   76                 SMBERROR("no local charset ?\n");
   77                 return EINVAL;
   78         }
   79 
   80         spec->sap = smb_memdupin(dp->ioc_server, dp->ioc_svlen);
   81         if (spec->sap == NULL)
   82                 return ENOMEM;
   83         if (dp->ioc_local) {
   84                 spec->lap = smb_memdupin(dp->ioc_local, dp->ioc_lolen);
   85                 if (spec->lap == NULL) {
   86                         smb_usr_vcspec_free(spec);
   87                         return ENOMEM;
   88                 }
   89         }
   90         spec->srvname = dp->ioc_srvname;
   91         spec->pass = dp->ioc_password;
   92         spec->domain = dp->ioc_workgroup;
   93         spec->username = dp->ioc_user;
   94         spec->mode = dp->ioc_mode;
   95         spec->rights = dp->ioc_rights;
   96         spec->owner = dp->ioc_owner;
   97         spec->group = dp->ioc_group;
   98         spec->localcs = dp->ioc_localcs;
   99         spec->servercs = dp->ioc_servercs;
  100         if (dp->ioc_opt & SMBVOPT_PRIVATE)
  101                 flags |= SMBV_PRIVATE;
  102         if (dp->ioc_opt & SMBVOPT_SINGLESHARE)
  103                 flags |= SMBV_PRIVATE | SMBV_SINGLESHARE;
  104         spec->flags = flags;
  105         return 0;
  106 }
  107 
  108 static void
  109 smb_usr_vcspec_free(struct smb_vcspec *spec)
  110 {
  111         if (spec->sap)
  112                 smb_memfree(spec->sap);
  113         if (spec->lap)
  114                 smb_memfree(spec->lap);
  115 }
  116 
  117 static int
  118 smb_usr_share2spec(struct smbioc_oshare *dp, struct smb_sharespec *spec)
  119 {
  120         bzero(spec, sizeof(*spec));
  121         spec->mode = dp->ioc_mode;
  122         spec->rights = dp->ioc_rights;
  123         spec->owner = dp->ioc_owner;
  124         spec->group = dp->ioc_group;
  125         spec->name = dp->ioc_share;
  126         spec->stype = dp->ioc_stype;
  127         spec->pass = dp->ioc_password;
  128         return 0;
  129 }
  130 
  131 int
  132 smb_usr_lookup(struct smbioc_lookup *dp, struct smb_cred *scred,
  133         struct smb_vc **vcpp, struct smb_share **sspp)
  134 {
  135         struct smb_vc *vcp = NULL;
  136         struct smb_vcspec vspec;
  137         struct smb_sharespec sspec, *sspecp = NULL;
  138         int error;
  139 
  140         if (dp->ioc_level < SMBL_VC || dp->ioc_level > SMBL_SHARE)
  141                 return EINVAL;
  142         error = smb_usr_vc2spec(&dp->ioc_ssn, &vspec);
  143         if (error)
  144                 return error;
  145         if (dp->ioc_flags & SMBLK_CREATE)
  146                 vspec.flags |= SMBV_CREATE;
  147 
  148         if (dp->ioc_level >= SMBL_SHARE) {
  149                 error = smb_usr_share2spec(&dp->ioc_sh, &sspec);
  150                 if (error)
  151                         goto out;
  152                 sspecp = &sspec;
  153         }
  154         error = smb_sm_lookup(&vspec, sspecp, scred, &vcp);
  155         if (error == 0) {
  156                 *vcpp = vcp;
  157                 *sspp = vspec.ssp;
  158         }
  159 out:
  160         smb_usr_vcspec_free(&vspec);
  161         return error;
  162 }
  163 
  164 /*
  165  * Connect to the resource specified by smbioc_ossn structure.
  166  * It may either find an existing connection or try to establish a new one.
  167  * If no errors occured smb_vc returned locked and referenced.
  168  */
  169 int
  170 smb_usr_opensession(struct smbioc_ossn *dp, struct smb_cred *scred,
  171         struct smb_vc **vcpp)
  172 {
  173         struct smb_vc *vcp = NULL;
  174         struct smb_vcspec vspec;
  175         int error;
  176 
  177         error = smb_usr_vc2spec(dp, &vspec);
  178         if (error)
  179                 return error;
  180         if (dp->ioc_opt & SMBVOPT_CREATE)
  181                 vspec.flags |= SMBV_CREATE;
  182 
  183         error = smb_sm_lookup(&vspec, NULL, scred, &vcp);
  184         smb_usr_vcspec_free(&vspec);
  185         return error;
  186 }
  187 
  188 int
  189 smb_usr_openshare(struct smb_vc *vcp, struct smbioc_oshare *dp,
  190         struct smb_cred *scred, struct smb_share **sspp)
  191 {
  192         struct smb_share *ssp;
  193         struct smb_sharespec shspec;
  194         int error;
  195 
  196         error = smb_usr_share2spec(dp, &shspec);
  197         if (error)
  198                 return error;
  199         error = smb_vc_lookupshare(vcp, &shspec, scred, &ssp);
  200         if (error == 0) {
  201                 *sspp = ssp;
  202                 return 0;
  203         }
  204         if ((dp->ioc_opt & SMBSOPT_CREATE) == 0)
  205                 return error;
  206         error = smb_share_create(vcp, &shspec, scred, &ssp);
  207         if (error)
  208                 return error;
  209         error = smb_smb_treeconnect(ssp, scred);
  210         if (error) {
  211                 smb_share_put(ssp, scred);
  212         } else
  213                 *sspp = ssp;
  214         return error;
  215 }
  216 
  217 int
  218 smb_usr_simplerequest(struct smb_share *ssp, struct smbioc_rq *dp,
  219         struct smb_cred *scred)
  220 {
  221         struct smb_rq rq, *rqp = &rq;
  222         struct mbchain *mbp;
  223         struct mdchain *mdp;
  224         u_int8_t wc;
  225         u_int16_t bc;
  226         int error;
  227 
  228         switch (dp->ioc_cmd) {
  229             case SMB_COM_TRANSACTION2:
  230             case SMB_COM_TRANSACTION2_SECONDARY:
  231             case SMB_COM_CLOSE_AND_TREE_DISC:
  232             case SMB_COM_TREE_CONNECT:
  233             case SMB_COM_TREE_DISCONNECT:
  234             case SMB_COM_NEGOTIATE:
  235             case SMB_COM_SESSION_SETUP_ANDX:
  236             case SMB_COM_LOGOFF_ANDX:
  237             case SMB_COM_TREE_CONNECT_ANDX:
  238                 return EPERM;
  239         }
  240         error = smb_rq_init(rqp, SSTOCP(ssp), dp->ioc_cmd, scred);
  241         if (error)
  242                 return error;
  243         mbp = &rqp->sr_rq;
  244         smb_rq_wstart(rqp);
  245         error = mb_put_mem(mbp, dp->ioc_twords, dp->ioc_twc * 2, MB_MUSER);
  246         if (error)
  247                 goto bad;
  248         smb_rq_wend(rqp);
  249         smb_rq_bstart(rqp);
  250         error = mb_put_mem(mbp, dp->ioc_tbytes, dp->ioc_tbc, MB_MUSER);
  251         if (error)
  252                 goto bad;
  253         smb_rq_bend(rqp);
  254         error = smb_rq_simple(rqp);
  255         if (error)
  256                 goto bad;
  257         mdp = &rqp->sr_rp;
  258         md_get_uint8(mdp, &wc);
  259         dp->ioc_rwc = wc;
  260         wc *= 2;
  261         if (wc > dp->ioc_rpbufsz) {
  262                 error = EBADRPC;
  263                 goto bad;
  264         }
  265         error = md_get_mem(mdp, dp->ioc_rpbuf, wc, MB_MUSER);
  266         if (error)
  267                 goto bad;
  268         md_get_uint16le(mdp, &bc);
  269         if ((wc + bc) > dp->ioc_rpbufsz) {
  270                 error = EBADRPC;
  271                 goto bad;
  272         }
  273         dp->ioc_rbc = bc;
  274         error = md_get_mem(mdp, dp->ioc_rpbuf + wc, bc, MB_MUSER);
  275 bad:
  276         dp->ioc_errclass = rqp->sr_errclass;
  277         dp->ioc_serror = rqp->sr_serror;
  278         dp->ioc_error = rqp->sr_error;
  279         smb_rq_done(rqp);
  280         return error;
  281 
  282 }
  283 
  284 static int
  285 smb_cpdatain(struct mbchain *mbp, int len, caddr_t data)
  286 {
  287         int error;
  288 
  289         if (len == 0)
  290                 return 0;
  291         error = mb_init(mbp);
  292         if (error)
  293                 return error;
  294         return mb_put_mem(mbp, data, len, MB_MUSER);
  295 }
  296 
  297 int
  298 smb_usr_t2request(struct smb_share *ssp, struct smbioc_t2rq *dp,
  299         struct smb_cred *scred)
  300 {
  301         struct smb_t2rq t2, *t2p = &t2;
  302         struct mdchain *mdp;
  303         int error, len;
  304 
  305         if (dp->ioc_setupcnt > 3)
  306                 return EINVAL;
  307         error = smb_t2_init(t2p, SSTOCP(ssp), dp->ioc_setup[0], scred);
  308         if (error)
  309                 return error;
  310         len = t2p->t2_setupcount = dp->ioc_setupcnt;
  311         if (len > 1)
  312                 t2p->t2_setupdata = dp->ioc_setup; 
  313         if (dp->ioc_name) {
  314                 t2p->t_name = smb_strdupin(dp->ioc_name, 128);
  315                 if (t2p->t_name == NULL) {
  316                         error = ENOMEM;
  317                         goto bad;
  318                 }
  319         }
  320         t2p->t2_maxscount = 0;
  321         t2p->t2_maxpcount = dp->ioc_rparamcnt;
  322         t2p->t2_maxdcount = dp->ioc_rdatacnt;
  323         error = smb_cpdatain(&t2p->t2_tparam, dp->ioc_tparamcnt, dp->ioc_tparam);
  324         if (error)
  325                 goto bad;
  326         error = smb_cpdatain(&t2p->t2_tdata, dp->ioc_tdatacnt, dp->ioc_tdata);
  327         if (error)
  328                 goto bad;
  329         error = smb_t2_request(t2p);
  330         if (error)
  331                 goto bad;
  332         mdp = &t2p->t2_rparam;
  333         if (mdp->md_top) {
  334                 len = m_fixhdr(mdp->md_top);
  335                 if (len > dp->ioc_rparamcnt) {
  336                         error = EMSGSIZE;
  337                         goto bad;
  338                 }
  339                 dp->ioc_rparamcnt = len;
  340                 error = md_get_mem(mdp, dp->ioc_rparam, len, MB_MUSER);
  341                 if (error)
  342                         goto bad;
  343         } else
  344                 dp->ioc_rparamcnt = 0;
  345         mdp = &t2p->t2_rdata;
  346         if (mdp->md_top) {
  347                 len = m_fixhdr(mdp->md_top);
  348                 if (len > dp->ioc_rdatacnt) {
  349                         error = EMSGSIZE;
  350                         goto bad;
  351                 }
  352                 dp->ioc_rdatacnt = len;
  353                 error = md_get_mem(mdp, dp->ioc_rdata, len, MB_MUSER);
  354         } else
  355                 dp->ioc_rdatacnt = 0;
  356 bad:
  357         if (t2p->t_name)
  358                 smb_strfree(t2p->t_name);
  359         smb_t2_done(t2p);
  360         return error;
  361 }

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