1 /* $NetBSD: smb_usr.c,v 1.16 2009/03/18 16:00:24 cegger Exp $ */
2
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 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Boris Popov.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * FreeBSD: src/sys/netsmb/smb_usr.c,v 1.1 2001/04/10 07:59:06 bp Exp
35 */
36
37 #include <sys/cdefs.h>
38 __KERNEL_RCSID(0, "$NetBSD: smb_usr.c,v 1.16 2009/03/18 16:00:24 cegger Exp $");
39
40 #include <sys/param.h>
41 #include <sys/malloc.h>
42 #include <sys/kernel.h>
43 #include <sys/systm.h>
44 #include <sys/conf.h>
45 #include <sys/proc.h>
46 #include <sys/fcntl.h>
47 #include <sys/socket.h>
48 #include <sys/socketvar.h>
49 #include <sys/sysctl.h>
50
51 #include <netsmb/iconv.h>
52
53 #include <netsmb/smb.h>
54 #include <netsmb/smb_conn.h>
55 #include <netsmb/smb_rq.h>
56 #include <netsmb/smb_subr.h>
57 #include <netsmb/smb_dev.h>
58
59 /*
60 * helpers for nsmb device. Can be moved to the smb_dev.c file.
61 */
62 static void smb_usr_vcspec_free(struct smb_vcspec *spec);
63
64 static int
smb_usr_vc2spec(struct smbioc_ossn * dp,struct smb_vcspec * spec)65 smb_usr_vc2spec(struct smbioc_ossn *dp, struct smb_vcspec *spec)
66 {
67 int flags = 0;
68
69 memset(spec, 0, sizeof(*spec));
70 if (dp->ioc_user[0] == 0)
71 return EINVAL;
72 if (dp->ioc_server == NULL)
73 return EINVAL;
74 if (dp->ioc_localcs[0] == 0) {
75 SMBERROR(("no local charset ?\n"));
76 return EINVAL;
77 }
78
79 spec->sap = smb_memdupin(dp->ioc_server, dp->ioc_svlen);
80 if (spec->sap == NULL)
81 return ENOMEM;
82 if (dp->ioc_local) {
83 spec->lap = smb_memdupin(dp->ioc_local, dp->ioc_lolen);
84 if (spec->lap == NULL) {
85 smb_usr_vcspec_free(spec);
86 return ENOMEM;
87 }
88 }
89 spec->srvname = dp->ioc_srvname;
90 spec->pass = dp->ioc_password;
91 spec->domain = dp->ioc_workgroup;
92 spec->username = dp->ioc_user;
93 spec->mode = dp->ioc_mode;
94 spec->rights = dp->ioc_rights;
95 spec->owner = dp->ioc_owner;
96 spec->group = dp->ioc_group;
97 spec->localcs = dp->ioc_localcs;
98 spec->servercs = dp->ioc_servercs;
99 if (dp->ioc_opt & SMBVOPT_PRIVATE)
100 flags |= SMBV_PRIVATE;
101 if (dp->ioc_opt & SMBVOPT_SINGLESHARE)
102 flags |= SMBV_PRIVATE | SMBV_SINGLESHARE;
103 spec->flags = flags;
104 return 0;
105 }
106
107 static void
smb_usr_vcspec_free(struct smb_vcspec * spec)108 smb_usr_vcspec_free(struct smb_vcspec *spec)
109 {
110 if (spec->sap)
111 smb_memfree(spec->sap);
112 if (spec->lap)
113 smb_memfree(spec->lap);
114 }
115
116 static int
smb_usr_share2spec(struct smbioc_oshare * dp,struct smb_sharespec * spec)117 smb_usr_share2spec(struct smbioc_oshare *dp, struct smb_sharespec *spec)
118 {
119 memset(spec, 0, sizeof(*spec));
120 spec->mode = dp->ioc_mode;
121 spec->rights = dp->ioc_rights;
122 spec->owner = dp->ioc_owner;
123 spec->group = dp->ioc_group;
124 spec->name = dp->ioc_share;
125 spec->stype = dp->ioc_stype;
126 spec->pass = dp->ioc_password;
127 return 0;
128 }
129
130 int
smb_usr_lookup(struct smbioc_lookup * dp,struct smb_cred * scred,struct smb_vc ** vcpp,struct smb_share ** sspp)131 smb_usr_lookup(struct smbioc_lookup *dp, struct smb_cred *scred,
132 struct smb_vc **vcpp, struct smb_share **sspp)
133 {
134 struct smb_vc *vcp = NULL;
135 struct smb_vcspec vspec;
136 struct smb_sharespec sspec, *sspecp = NULL;
137 int error;
138
139 if (dp->ioc_level < SMBL_VC || dp->ioc_level > SMBL_SHARE)
140 return EINVAL;
141 error = smb_usr_vc2spec(&dp->ioc_ssn, &vspec);
142 if (error)
143 return error;
144 if (dp->ioc_flags & SMBLK_CREATE)
145 vspec.flags |= SMBV_CREATE;
146
147 if (dp->ioc_level >= SMBL_SHARE) {
148 error = smb_usr_share2spec(&dp->ioc_sh, &sspec);
149 if (error)
150 goto out;
151 sspecp = &sspec;
152 }
153 error = smb_sm_lookup(&vspec, sspecp, scred, &vcp);
154 if (error == 0) {
155 *vcpp = vcp;
156 *sspp = vspec.ssp;
157 }
158 out:
159 smb_usr_vcspec_free(&vspec);
160 return error;
161 }
162
163 /*
164 * Connect to the resource specified by smbioc_ossn structure.
165 * It may either find an existing connection or try to establish a new one.
166 * If no errors occurred smb_vc returned locked and referenced.
167 */
168 int
smb_usr_opensession(struct smbioc_ossn * dp,struct smb_cred * scred,struct smb_vc ** vcpp)169 smb_usr_opensession(struct smbioc_ossn *dp, struct smb_cred *scred,
170 struct smb_vc **vcpp)
171 {
172 struct smb_vc *vcp = NULL;
173 struct smb_vcspec vspec;
174 int error;
175
176 error = smb_usr_vc2spec(dp, &vspec);
177 if (error)
178 return error;
179 if (dp->ioc_opt & SMBVOPT_CREATE)
180 vspec.flags |= SMBV_CREATE;
181
182 error = smb_sm_lookup(&vspec, NULL, scred, &vcp);
183 smb_usr_vcspec_free(&vspec);
184 return error;
185 }
186
187 int
smb_usr_openshare(struct smb_vc * vcp,struct smbioc_oshare * dp,struct smb_cred * scred,struct smb_share ** sspp)188 smb_usr_openshare(struct smb_vc *vcp, struct smbioc_oshare *dp,
189 struct smb_cred *scred, struct smb_share **sspp)
190 {
191 struct smb_share *ssp;
192 struct smb_sharespec shspec;
193 int error;
194
195 error = smb_usr_share2spec(dp, &shspec);
196 if (error)
197 return error;
198 error = smb_vc_lookupshare(vcp, &shspec, scred, &ssp);
199 if (error == 0) {
200 *sspp = ssp;
201 return 0;
202 }
203 if ((dp->ioc_opt & SMBSOPT_CREATE) == 0)
204 return error;
205 error = smb_share_create(vcp, &shspec, scred, &ssp);
206 if (error)
207 return error;
208 error = smb_smb_treeconnect(ssp, scred);
209 if (error) {
210 smb_share_put(ssp, scred);
211 } else
212 *sspp = ssp;
213 return error;
214 }
215
216 int
smb_usr_simplerequest(struct smb_share * ssp,struct smbioc_rq * dp,struct smb_cred * scred)217 smb_usr_simplerequest(struct smb_share *ssp, struct smbioc_rq *dp,
218 struct smb_cred *scred)
219 {
220 struct smb_rq *rqp;
221 struct mbchain *mbp;
222 struct mdchain *mdp;
223 u_int8_t wc;
224 u_int16_t bc;
225 int error;
226
227 switch (dp->ioc_cmd) {
228 case SMB_COM_TRANSACTION2:
229 case SMB_COM_TRANSACTION2_SECONDARY:
230 case SMB_COM_CLOSE_AND_TREE_DISC:
231 case SMB_COM_TREE_CONNECT:
232 case SMB_COM_TREE_DISCONNECT:
233 case SMB_COM_NEGOTIATE:
234 case SMB_COM_SESSION_SETUP_ANDX:
235 case SMB_COM_LOGOFF_ANDX:
236 case SMB_COM_TREE_CONNECT_ANDX:
237 return EPERM;
238 }
239 error = smb_rq_alloc(SSTOCP(ssp), dp->ioc_cmd, scred, &rqp);
240 if (error)
241 return error;
242 mbp = &rqp->sr_rq;
243 smb_rq_wstart(rqp);
244 error = mb_put_mem(mbp, dp->ioc_twords, dp->ioc_twc * 2, MB_MUSER);
245 if (error)
246 goto bad;
247 smb_rq_wend(rqp);
248 smb_rq_bstart(rqp);
249 error = mb_put_mem(mbp, dp->ioc_tbytes, dp->ioc_tbc, MB_MUSER);
250 if (error)
251 goto bad;
252 smb_rq_bend(rqp);
253 error = smb_rq_simple(rqp);
254 if (error)
255 goto bad;
256 mdp = &rqp->sr_rp;
257 md_get_uint8(mdp, &wc);
258 dp->ioc_rwc = wc;
259 wc *= 2;
260 if (wc > dp->ioc_rpbufsz) {
261 error = EBADRPC;
262 goto bad;
263 }
264 error = md_get_mem(mdp, dp->ioc_rpbuf, wc, MB_MUSER);
265 if (error)
266 goto bad;
267 md_get_uint16le(mdp, &bc);
268 if ((wc + bc) > dp->ioc_rpbufsz) {
269 error = EBADRPC;
270 goto bad;
271 }
272 dp->ioc_rbc = bc;
273 error = md_get_mem(mdp, dp->ioc_rpbuf + wc, bc, MB_MUSER);
274 bad:
275 smb_rq_done(rqp);
276 return error;
277
278 }
279
280 static int
smb_cpdatain(struct mbchain * mbp,int len,void * data)281 smb_cpdatain(struct mbchain *mbp, int len, void *data)
282 {
283 int error;
284
285 if (len == 0)
286 return 0;
287 error = mb_init(mbp);
288 if (error)
289 return error;
290 return mb_put_mem(mbp, data, len, MB_MUSER);
291 }
292
293 int
smb_usr_t2request(struct smb_share * ssp,struct smbioc_t2rq * dp,struct smb_cred * scred)294 smb_usr_t2request(struct smb_share *ssp, struct smbioc_t2rq *dp,
295 struct smb_cred *scred)
296 {
297 struct smb_t2rq *t2p;
298 struct mdchain *mdp;
299 int error, len;
300
301 if (dp->ioc_setupcnt > 3)
302 return EINVAL;
303 error = smb_t2_alloc(SSTOCP(ssp), dp->ioc_setup[0], scred, &t2p);
304 if (error)
305 return error;
306 len = t2p->t2_setupcount = dp->ioc_setupcnt;
307 if (len > 1)
308 t2p->t2_setupdata = dp->ioc_setup;
309 if (dp->ioc_name) {
310 t2p->t_name = smb_strdupin(dp->ioc_name, 128);
311 if (t2p->t_name == NULL) {
312 error = ENOMEM;
313 goto bad;
314 }
315 }
316 t2p->t2_maxscount = 0;
317 t2p->t2_maxpcount = dp->ioc_rparamcnt;
318 t2p->t2_maxdcount = dp->ioc_rdatacnt;
319 error = smb_cpdatain(&t2p->t2_tparam, dp->ioc_tparamcnt, dp->ioc_tparam);
320 if (error)
321 goto bad;
322 error = smb_cpdatain(&t2p->t2_tdata, dp->ioc_tdatacnt, dp->ioc_tdata);
323 if (error)
324 goto bad;
325 error = smb_t2_request(t2p);
326 if (error)
327 goto bad;
328 mdp = &t2p->t2_rparam;
329 if (mdp->md_top) {
330 len = m_fixhdr(mdp->md_top);
331 if (len > dp->ioc_rparamcnt) {
332 error = EMSGSIZE;
333 goto bad;
334 }
335 dp->ioc_rparamcnt = len;
336 error = md_get_mem(mdp, dp->ioc_rparam, len, MB_MUSER);
337 if (error)
338 goto bad;
339 } else
340 dp->ioc_rparamcnt = 0;
341 mdp = &t2p->t2_rdata;
342 if (mdp->md_top) {
343 len = m_fixhdr(mdp->md_top);
344 if (len > dp->ioc_rdatacnt) {
345 error = EMSGSIZE;
346 goto bad;
347 }
348 dp->ioc_rdatacnt = len;
349 error = md_get_mem(mdp, dp->ioc_rdata, len, MB_MUSER);
350 } else
351 dp->ioc_rdatacnt = 0;
352 bad:
353 if (t2p->t_name)
354 smb_strfree(t2p->t_name);
355 smb_t2_done(t2p);
356 return error;
357 }
358