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HardenedBSD/sys/netsmb/smb_usr.c
Pedro F. Giffuni fe267a5590 sys: general adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:23:17 +00:00

366 lines
8.9 KiB
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2000-2001 Boris Popov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/fcntl.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <sys/mbuf.h>
#include <sys/iconv.h>
#include <netsmb/smb.h>
#include <netsmb/smb_conn.h>
#include <netsmb/smb_rq.h>
#include <netsmb/smb_subr.h>
#include <netsmb/smb_dev.h>
/*
* helpers for nsmb device. Can be moved to the smb_dev.c file.
*/
static void smb_usr_vcspec_free(struct smb_vcspec *spec);
static int
smb_usr_vc2spec(struct smbioc_ossn *dp, struct smb_vcspec *spec)
{
int flags = 0;
bzero(spec, sizeof(*spec));
#ifdef NETSMB_NO_ANON_USER
if (dp->ioc_user[0] == 0)
return EINVAL;
#endif
if (dp->ioc_server == NULL)
return EINVAL;
if (dp->ioc_localcs[0] == 0) {
SMBERROR("no local charset ?\n");
return EINVAL;
}
spec->sap = smb_memdupin(dp->ioc_server, dp->ioc_svlen);
if (spec->sap == NULL)
return ENOMEM;
if (dp->ioc_local) {
spec->lap = smb_memdupin(dp->ioc_local, dp->ioc_lolen);
if (spec->lap == NULL) {
smb_usr_vcspec_free(spec);
return ENOMEM;
}
}
spec->srvname = dp->ioc_srvname;
spec->pass = dp->ioc_password;
spec->domain = dp->ioc_workgroup;
spec->username = dp->ioc_user;
spec->mode = dp->ioc_mode;
spec->rights = dp->ioc_rights;
spec->owner = dp->ioc_owner;
spec->group = dp->ioc_group;
spec->localcs = dp->ioc_localcs;
spec->servercs = dp->ioc_servercs;
if (dp->ioc_opt & SMBVOPT_PRIVATE)
flags |= SMBV_PRIVATE;
if (dp->ioc_opt & SMBVOPT_SINGLESHARE)
flags |= SMBV_PRIVATE | SMBV_SINGLESHARE;
spec->flags = flags;
return 0;
}
static void
smb_usr_vcspec_free(struct smb_vcspec *spec)
{
if (spec->sap)
smb_memfree(spec->sap);
if (spec->lap)
smb_memfree(spec->lap);
}
static int
smb_usr_share2spec(struct smbioc_oshare *dp, struct smb_sharespec *spec)
{
bzero(spec, sizeof(*spec));
spec->mode = dp->ioc_mode;
spec->rights = dp->ioc_rights;
spec->owner = dp->ioc_owner;
spec->group = dp->ioc_group;
spec->name = dp->ioc_share;
spec->stype = dp->ioc_stype;
spec->pass = dp->ioc_password;
return 0;
}
int
smb_usr_lookup(struct smbioc_lookup *dp, struct smb_cred *scred,
struct smb_vc **vcpp, struct smb_share **sspp)
{
struct smb_vc *vcp = NULL;
struct smb_vcspec vspec; /* XXX */
struct smb_sharespec sspec, *sspecp = NULL; /* XXX */
int error;
if (dp->ioc_level < SMBL_VC || dp->ioc_level > SMBL_SHARE)
return EINVAL;
error = smb_usr_vc2spec(&dp->ioc_ssn, &vspec);
if (error)
return error;
if (dp->ioc_flags & SMBLK_CREATE)
vspec.flags |= SMBV_CREATE;
if (dp->ioc_level >= SMBL_SHARE) {
error = smb_usr_share2spec(&dp->ioc_sh, &sspec);
if (error)
goto out;
sspecp = &sspec;
}
error = smb_sm_lookup(&vspec, sspecp, scred, &vcp);
if (error == 0) {
*vcpp = vcp;
*sspp = vspec.ssp;
}
out:
smb_usr_vcspec_free(&vspec);
return error;
}
/*
* Connect to the resource specified by smbioc_ossn structure.
* It may either find an existing connection or try to establish a new one.
* If no errors occurred smb_vc returned locked and referenced.
*/
int
smb_usr_opensession(struct smbioc_ossn *dp, struct smb_cred *scred,
struct smb_vc **vcpp)
{
struct smb_vc *vcp = NULL;
struct smb_vcspec vspec;
int error;
error = smb_usr_vc2spec(dp, &vspec);
if (error)
return error;
if (dp->ioc_opt & SMBVOPT_CREATE)
vspec.flags |= SMBV_CREATE;
error = smb_sm_lookup(&vspec, NULL, scred, &vcp);
smb_usr_vcspec_free(&vspec);
return error;
}
int
smb_usr_openshare(struct smb_vc *vcp, struct smbioc_oshare *dp,
struct smb_cred *scred, struct smb_share **sspp)
{
struct smb_share *ssp;
struct smb_sharespec shspec;
int error;
error = smb_usr_share2spec(dp, &shspec);
if (error)
return error;
error = smb_vc_lookupshare(vcp, &shspec, scred, &ssp);
if (error == 0) {
*sspp = ssp;
return 0;
}
if ((dp->ioc_opt & SMBSOPT_CREATE) == 0)
return error;
error = smb_share_create(vcp, &shspec, scred, &ssp);
if (error)
return error;
error = smb_smb_treeconnect(ssp, scred);
if (error) {
smb_share_put(ssp, scred);
} else
*sspp = ssp;
return error;
}
int
smb_usr_simplerequest(struct smb_share *ssp, struct smbioc_rq *dp,
struct smb_cred *scred)
{
struct smb_rq *rqp;
struct mbchain *mbp;
struct mdchain *mdp;
u_int8_t wc;
u_int16_t bc;
int error;
switch (dp->ioc_cmd) {
case SMB_COM_TRANSACTION2:
case SMB_COM_TRANSACTION2_SECONDARY:
case SMB_COM_CLOSE_AND_TREE_DISC:
case SMB_COM_TREE_CONNECT:
case SMB_COM_TREE_DISCONNECT:
case SMB_COM_NEGOTIATE:
case SMB_COM_SESSION_SETUP_ANDX:
case SMB_COM_LOGOFF_ANDX:
case SMB_COM_TREE_CONNECT_ANDX:
return EPERM;
}
rqp = malloc(sizeof(struct smb_rq), M_SMBTEMP, M_WAITOK);
error = smb_rq_init(rqp, SSTOCP(ssp), dp->ioc_cmd, scred);
if (error) {
free(rqp, M_SMBTEMP);
return error;
}
mbp = &rqp->sr_rq;
smb_rq_wstart(rqp);
error = mb_put_mem(mbp, dp->ioc_twords, dp->ioc_twc * 2, MB_MUSER);
if (error)
goto bad;
smb_rq_wend(rqp);
smb_rq_bstart(rqp);
error = mb_put_mem(mbp, dp->ioc_tbytes, dp->ioc_tbc, MB_MUSER);
if (error)
goto bad;
smb_rq_bend(rqp);
error = smb_rq_simple(rqp);
if (error)
goto bad;
mdp = &rqp->sr_rp;
md_get_uint8(mdp, &wc);
dp->ioc_rwc = wc;
wc *= 2;
if (wc > dp->ioc_rpbufsz) {
error = EBADRPC;
goto bad;
}
error = md_get_mem(mdp, dp->ioc_rpbuf, wc, MB_MUSER);
if (error)
goto bad;
md_get_uint16le(mdp, &bc);
if ((wc + bc) > dp->ioc_rpbufsz) {
error = EBADRPC;
goto bad;
}
dp->ioc_rbc = bc;
error = md_get_mem(mdp, dp->ioc_rpbuf + wc, bc, MB_MUSER);
bad:
dp->ioc_errclass = rqp->sr_errclass;
dp->ioc_serror = rqp->sr_serror;
dp->ioc_error = rqp->sr_error;
smb_rq_done(rqp);
free(rqp, M_SMBTEMP);
return error;
}
static int
smb_cpdatain(struct mbchain *mbp, int len, caddr_t data)
{
int error;
if (len == 0)
return 0;
error = mb_init(mbp);
if (error)
return error;
return mb_put_mem(mbp, data, len, MB_MUSER);
}
int
smb_usr_t2request(struct smb_share *ssp, struct smbioc_t2rq *dp,
struct smb_cred *scred)
{
struct smb_t2rq *t2p;
struct mdchain *mdp;
int error, len;
if (dp->ioc_setupcnt > 3)
return EINVAL;
t2p = malloc(sizeof(struct smb_t2rq), M_SMBTEMP, M_WAITOK);
error = smb_t2_init(t2p, SSTOCP(ssp), dp->ioc_setup[0], scred);
if (error) {
free(t2p, M_SMBTEMP);
return error;
}
len = t2p->t2_setupcount = dp->ioc_setupcnt;
if (len > 1)
t2p->t2_setupdata = dp->ioc_setup;
if (dp->ioc_name) {
t2p->t_name = smb_strdupin(dp->ioc_name, 128);
if (t2p->t_name == NULL) {
error = ENOMEM;
goto bad;
}
}
t2p->t2_maxscount = 0;
t2p->t2_maxpcount = dp->ioc_rparamcnt;
t2p->t2_maxdcount = dp->ioc_rdatacnt;
error = smb_cpdatain(&t2p->t2_tparam, dp->ioc_tparamcnt, dp->ioc_tparam);
if (error)
goto bad;
error = smb_cpdatain(&t2p->t2_tdata, dp->ioc_tdatacnt, dp->ioc_tdata);
if (error)
goto bad;
error = smb_t2_request(t2p);
if (error)
goto bad;
mdp = &t2p->t2_rparam;
if (mdp->md_top) {
len = m_fixhdr(mdp->md_top);
if (len > dp->ioc_rparamcnt) {
error = EMSGSIZE;
goto bad;
}
dp->ioc_rparamcnt = len;
error = md_get_mem(mdp, dp->ioc_rparam, len, MB_MUSER);
if (error)
goto bad;
} else
dp->ioc_rparamcnt = 0;
mdp = &t2p->t2_rdata;
if (mdp->md_top) {
len = m_fixhdr(mdp->md_top);
if (len > dp->ioc_rdatacnt) {
error = EMSGSIZE;
goto bad;
}
dp->ioc_rdatacnt = len;
error = md_get_mem(mdp, dp->ioc_rdata, len, MB_MUSER);
} else
dp->ioc_rdatacnt = 0;
bad:
if (t2p->t_name)
smb_strfree(t2p->t_name);
smb_t2_done(t2p);
free(t2p, M_SMBTEMP);
return error;
}
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