2 * Copyright (c) 2000-2001 Boris Popov
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
32 * $FreeBSD: src/sys/netsmb/smb_smb.c,v 1.1.2.3 2002/12/14 14:44:19 fjoe Exp $
35 * various SMB requests. Most of the routines merely packs data into mbufs.
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
43 #include <sys/sysctl.h>
44 #include <sys/socket.h>
47 #include <sys/iconv.h>
48 #include <machine/limits.h>
61 static struct smb_dialect smb_dialects[] = {
62 {SMB_DIALECT_CORE, "PC NETWORK PROGRAM 1.0"},
63 {SMB_DIALECT_COREPLUS, "MICROSOFT NETWORKS 1.03"},
64 {SMB_DIALECT_LANMAN1_0, "MICROSOFT NETWORKS 3.0"},
65 {SMB_DIALECT_LANMAN1_0, "LANMAN1.0"},
66 {SMB_DIALECT_LANMAN2_0, "LM1.2X002"},
67 {SMB_DIALECT_LANMAN2_0, "Samba"},
68 {SMB_DIALECT_NTLM0_12, "NT LANMAN 1.0"},
69 {SMB_DIALECT_NTLM0_12, "NT LM 0.12"},
73 #define SMB_DIALECT_MAX (NELEM(smb_dialects) - 2)
76 smb_smb_nomux(struct smb_vc *vcp, struct smb_cred *scred, const char *name)
78 if (scred->scr_td == vcp->vc_iod->iod_td)
80 SMBERROR("wrong function called(%s)\n", name);
85 smb_smb_negotiate(struct smb_vc *vcp, struct smb_cred *scred)
87 struct smb_dialect *dp;
88 struct smb_sopt *sp = NULL;
92 u_int8_t wc, stime[8], sblen;
93 u_int16_t dindex, tw, tw1, swlen, bc;
96 if (smb_smb_nomux(vcp, scred, __func__) != 0)
100 vcp->obj.co_flags &= ~(SMBV_ENCRYPT);
102 bzero(sp, sizeof(struct smb_sopt));
103 error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_NEGOTIATE, scred, &rqp);
106 smb_rq_getrequest(rqp, &mbp);
110 for(dp = smb_dialects; dp->d_id != -1; dp++) {
111 mb_put_uint8(mbp, SMB_DT_DIALECT);
112 smb_put_dstring(mbp, vcp, dp->d_name, SMB_CS_NONE);
115 error = smb_rq_simple(rqp);
116 SMBSDEBUG("%d\n", error);
119 smb_rq_getreply(rqp, &mdp);
121 error = md_get_uint8(mdp, &wc);
124 error = md_get_uint16le(mdp, &dindex);
128 SMBERROR("Don't know how to talk with server %s (%d)\n", "xxx", dindex);
132 dp = smb_dialects + dindex;
133 sp->sv_proto = dp->d_id;
134 SMBSDEBUG("Dialect %s (%d, %d)\n", dp->d_name, dindex, wc);
136 if (dp->d_id >= SMB_DIALECT_NTLM0_12) {
139 md_get_uint8(mdp, &sp->sv_sm);
140 md_get_uint16le(mdp, &sp->sv_maxmux);
141 md_get_uint16le(mdp, &sp->sv_maxvcs);
142 md_get_uint32le(mdp, &sp->sv_maxtx);
143 md_get_uint32le(mdp, &sp->sv_maxraw);
144 md_get_uint32le(mdp, &sp->sv_skey);
145 md_get_uint32le(mdp, &sp->sv_caps);
146 md_get_mem(mdp, stime, 8, MB_MSYSTEM);
147 md_get_uint16le(mdp, (u_int16_t*)&sp->sv_tz);
148 md_get_uint8(mdp, &sblen);
149 if (sblen && (sp->sv_sm & SMB_SM_ENCRYPT)) {
150 if (sblen != SMB_MAXCHALLENGELEN) {
151 SMBERROR("Unexpected length of security blob (%d)\n", sblen);
154 error = md_get_uint16(mdp, &bc);
157 if (sp->sv_caps & SMB_CAP_EXT_SECURITY)
158 md_get_mem(mdp, NULL, 16, MB_MSYSTEM);
159 error = md_get_mem(mdp, vcp->vc_ch, sblen, MB_MSYSTEM);
162 vcp->vc_chlen = sblen;
163 vcp->obj.co_flags |= SMBV_ENCRYPT;
165 vcp->vc_hflags2 |= SMB_FLAGS2_KNOWS_LONG_NAMES;
166 if (dp->d_id == SMB_DIALECT_NTLM0_12 &&
167 sp->sv_maxtx < 4096 &&
168 (sp->sv_caps & SMB_CAP_NT_SMBS) == 0) {
169 vcp->obj.co_flags |= SMBV_WIN95;
170 SMBSDEBUG("Win95 detected\n");
172 } else if (dp->d_id > SMB_DIALECT_CORE) {
173 md_get_uint16le(mdp, &tw);
175 md_get_uint16le(mdp, &tw);
177 md_get_uint16le(mdp, &sp->sv_maxmux);
178 md_get_uint16le(mdp, &sp->sv_maxvcs);
179 md_get_uint16le(mdp, &tw); /* rawmode */
180 md_get_uint32le(mdp, &sp->sv_skey);
181 if (wc == 13) { /* >= LANMAN1 */
182 md_get_uint16(mdp, &tw); /* time */
183 md_get_uint16(mdp, &tw1); /* date */
184 md_get_uint16le(mdp, (u_int16_t*)&sp->sv_tz);
185 md_get_uint16le(mdp, &swlen);
186 if (swlen > SMB_MAXCHALLENGELEN)
188 md_get_uint16(mdp, NULL); /* mbz */
189 if (md_get_uint16(mdp, &bc) != 0)
193 if (swlen && (sp->sv_sm & SMB_SM_ENCRYPT)) {
194 error = md_get_mem(mdp, vcp->vc_ch, swlen, MB_MSYSTEM);
197 vcp->vc_chlen = swlen;
198 vcp->obj.co_flags |= SMBV_ENCRYPT;
201 vcp->vc_hflags2 |= SMB_FLAGS2_KNOWS_LONG_NAMES;
202 } else { /* an old CORE protocol */
208 vcp->vc_maxvcs = sp->sv_maxvcs;
209 if (vcp->vc_maxvcs <= 1) {
210 if (vcp->vc_maxvcs == 0)
213 if (sp->sv_maxtx <= 0 || sp->sv_maxtx > 0xffff)
215 SMB_TRAN_GETPARAM(vcp, SMBTP_SNDSZ, &maxqsz);
216 vcp->vc_txmax = min(sp->sv_maxtx, maxqsz);
217 SMBSDEBUG("TZ = %d\n", sp->sv_tz);
218 SMBSDEBUG("CAPS = %x\n", sp->sv_caps);
219 SMBSDEBUG("MAXMUX = %d\n", sp->sv_maxmux);
220 SMBSDEBUG("MAXVCS = %d\n", sp->sv_maxvcs);
221 SMBSDEBUG("MAXRAW = %d\n", sp->sv_maxraw);
222 SMBSDEBUG("MAXTX = %d\n", sp->sv_maxtx);
230 smb_smb_ssnsetup(struct smb_vc *vcp, struct smb_cred *scred)
236 smb_uniptr unipp, ntencpass = NULL;
237 char *pp, *up, *pbuf, *encpass;
238 int error, plen, uniplen, ulen;
240 vcp->vc_smbuid = SMB_UID_UNKNOWN;
242 if (smb_smb_nomux(vcp, scred, __func__) != 0)
245 error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_SESSION_SETUP_ANDX, scred, &rqp);
248 pbuf = kmalloc(SMB_MAXPASSWORDLEN + 1, M_SMBTEMP, M_WAITOK);
249 encpass = kmalloc(24, M_SMBTEMP, M_WAITOK);
250 if (vcp->vc_sopt.sv_sm & SMB_SM_USER) {
251 iconv_convstr(vcp->vc_toupper, pbuf, smb_vc_getpass(vcp));
252 iconv_convstr(vcp->vc_toserver, pbuf, pbuf);
253 if (vcp->vc_sopt.sv_sm & SMB_SM_ENCRYPT) {
255 smb_encrypt(pbuf, vcp->vc_ch, encpass);
256 ntencpass = kmalloc(uniplen, M_SMBTEMP, M_WAITOK);
257 iconv_convstr(vcp->vc_toserver, pbuf, smb_vc_getpass(vcp));
258 smb_ntencrypt(pbuf, vcp->vc_ch, (u_char*)ntencpass);
262 plen = strlen(pbuf) + 1;
265 ntencpass = kmalloc(uniplen, M_SMBTEMP, M_WAITOK);
266 smb_strtouni(ntencpass, smb_vc_getpass(vcp));
270 * The uniplen is zeroed because Samba cannot deal
271 * with this 2nd cleartext password. This Samba
272 * "bug" is actually a workaround for problems in
280 * In the share security mode password will be used
281 * only in the tree authentication
286 uniplen = 0 /* sizeof(smb_unieol) */;
290 up = vcp->vc_username;
291 ulen = strlen(up) + 1;
292 mb_put_uint8(mbp, 0xff);
293 mb_put_uint8(mbp, 0);
294 mb_put_uint16le(mbp, 0);
295 mb_put_uint16le(mbp, vcp->vc_sopt.sv_maxtx);
296 mb_put_uint16le(mbp, vcp->vc_sopt.sv_maxmux);
297 mb_put_uint16le(mbp, vcp->vc_number);
298 mb_put_uint32le(mbp, vcp->vc_sopt.sv_skey);
299 mb_put_uint16le(mbp, plen);
300 if (SMB_DIALECT(vcp) < SMB_DIALECT_NTLM0_12) {
301 mb_put_uint32le(mbp, 0);
304 mb_put_mem(mbp, pp, plen, MB_MSYSTEM);
305 smb_put_dstring(mbp, vcp, up, SMB_CS_NONE);
307 mb_put_uint16le(mbp, uniplen);
308 mb_put_uint32le(mbp, 0); /* reserved */
309 mb_put_uint32le(mbp, vcp->obj.co_flags & SMBV_UNICODE ?
310 SMB_CAP_UNICODE : 0);
313 mb_put_mem(mbp, pp, plen, MB_MSYSTEM);
314 mb_put_mem(mbp, (caddr_t)unipp, uniplen, MB_MSYSTEM);
315 smb_put_dstring(mbp, vcp, up, SMB_CS_NONE); /* AccountName */
316 smb_put_dstring(mbp, vcp, vcp->vc_domain, SMB_CS_NONE); /* PrimaryDomain */
317 smb_put_dstring(mbp, vcp, "FreeBSD", SMB_CS_NONE); /* Client's OS */
318 smb_put_dstring(mbp, vcp, "NETSMB", SMB_CS_NONE); /* Client name */
322 kfree(ntencpass, M_SMBTEMP);
323 error = smb_rq_simple(rqp);
324 SMBSDEBUG("%d\n", error);
326 if (rqp->sr_errclass == ERRDOS && rqp->sr_serror == ERRnoaccess)
330 vcp->vc_smbuid = rqp->sr_rpuid;
332 kfree(encpass, M_SMBTEMP);
333 kfree(pbuf, M_SMBTEMP);
339 smb_smb_ssnclose(struct smb_vc *vcp, struct smb_cred *scred)
345 if (vcp->vc_smbuid == SMB_UID_UNKNOWN)
348 if (smb_smb_nomux(vcp, scred, __func__) != 0)
351 error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_LOGOFF_ANDX, scred, &rqp);
356 mb_put_uint8(mbp, 0xff);
357 mb_put_uint8(mbp, 0);
358 mb_put_uint16le(mbp, 0);
362 error = smb_rq_simple(rqp);
363 SMBSDEBUG("%d\n", error);
368 static char smb_any_share[] = "?????";
371 smb_share_typename(int stype)
380 pp = smb_any_share; /* can't use LPT: here... */
397 smb_smb_treeconnect(struct smb_share *ssp, struct smb_cred *scred)
400 struct smb_rq rq, *rqp = &rq;
402 char *pp, *pbuf, *encpass;
403 int error, plen, caseopt;
405 ssp->ss_tid = SMB_TID_UNKNOWN;
406 error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_TREE_CONNECT_ANDX, scred, &rqp);
410 caseopt = SMB_CS_NONE;
411 if (vcp->vc_sopt.sv_sm & SMB_SM_USER) {
417 pbuf = kmalloc(SMB_MAXPASSWORDLEN + 1, M_SMBTEMP, M_WAITOK);
418 encpass = kmalloc(24, M_SMBTEMP, M_WAITOK);
419 iconv_convstr(vcp->vc_toupper, pbuf, smb_share_getpass(ssp));
420 iconv_convstr(vcp->vc_toserver, pbuf, pbuf);
421 if (vcp->vc_sopt.sv_sm & SMB_SM_ENCRYPT) {
423 smb_encrypt(pbuf, vcp->vc_ch, encpass);
426 plen = strlen(pbuf) + 1;
432 mb_put_uint8(mbp, 0xff);
433 mb_put_uint8(mbp, 0);
434 mb_put_uint16le(mbp, 0);
435 mb_put_uint16le(mbp, 0); /* Flags */
436 mb_put_uint16le(mbp, plen);
439 mb_put_mem(mbp, pp, plen, MB_MSYSTEM);
440 smb_put_dmem(mbp, vcp, "\\\\", 2, caseopt);
441 pp = vcp->vc_srvname;
442 smb_put_dmem(mbp, vcp, pp, strlen(pp), caseopt);
443 smb_put_dmem(mbp, vcp, "\\", 1, caseopt);
445 smb_put_dstring(mbp, vcp, pp, caseopt);
446 pp = smb_share_typename(ssp->ss_type);
447 smb_put_dstring(mbp, vcp, pp, caseopt);
449 error = smb_rq_simple(rqp);
450 SMBSDEBUG("%d\n", error);
453 ssp->ss_tid = rqp->sr_rptid;
454 ssp->ss_vcgenid = vcp->vc_genid;
455 ssp->ss_flags |= SMBS_CONNECTED;
458 kfree(encpass, M_SMBTEMP);
460 kfree(pbuf, M_SMBTEMP);
466 smb_smb_treedisconnect(struct smb_share *ssp, struct smb_cred *scred)
472 if (ssp->ss_tid == SMB_TID_UNKNOWN)
474 error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_TREE_DISCONNECT, scred, &rqp);
482 error = smb_rq_simple(rqp);
483 SMBSDEBUG("%d\n", error);
485 ssp->ss_tid = SMB_TID_UNKNOWN;
490 smb_smb_read(struct smb_share *ssp, u_int16_t fid,
491 int *len, int *rresid, struct uio *uio, struct smb_cred *scred)
498 int error, rlen, blksz;
500 error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_READ, scred, &rqp);
504 blksz = SSTOVC(ssp)->vc_txmax - SMB_HDRLEN - 16;
505 rlen = *len = min(blksz, *len);
507 smb_rq_getrequest(rqp, &mbp);
509 mb_put_mem(mbp, (caddr_t)&fid, sizeof(fid), MB_MSYSTEM);
510 mb_put_uint16le(mbp, rlen);
511 mb_put_uint32le(mbp, uio->uio_offset);
512 mb_put_uint16le(mbp, (unsigned short)szmin(uio->uio_resid, 0xffff));
517 error = smb_rq_simple(rqp);
520 smb_rq_getreply(rqp, &mdp);
521 md_get_uint8(mdp, &wc);
526 md_get_uint16le(mdp, &resid);
527 md_get_mem(mdp, NULL, 4 * 2, MB_MSYSTEM);
528 md_get_uint16le(mdp, &bc);
529 md_get_uint8(mdp, NULL); /* ignore buffer type */
530 md_get_uint16le(mdp, &resid);
535 error = md_get_uio(mdp, uio, resid);
545 smb_read(struct smb_share *ssp, u_int16_t fid, struct uio *uio,
546 struct smb_cred *scred)
551 while (uio->uio_resid > 0) {
552 if (uio->uio_resid > INT_MAX)
555 len = (int)uio->uio_resid;
556 error = smb_smb_read(ssp, fid, &len, &resid, uio, scred);
566 smb_smb_write(struct smb_share *ssp, u_int16_t fid, int *len, int *rresid,
567 struct uio *uio, struct smb_cred *scred)
576 /* write data must be real */
577 KKASSERT(uio->uio_segflg != UIO_NOCOPY);
579 blksz = SSTOVC(ssp)->vc_txmax - SMB_HDRLEN - 16;
583 resid = *len = min(blksz, *len);
585 error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_WRITE, scred, &rqp);
588 smb_rq_getrequest(rqp, &mbp);
590 mb_put_mem(mbp, (caddr_t)&fid, sizeof(fid), MB_MSYSTEM);
591 mb_put_uint16le(mbp, resid);
592 mb_put_uint32le(mbp, uio->uio_offset);
593 mb_put_uint16le(mbp, (unsigned short)szmin(uio->uio_resid, 0xffff));
596 mb_put_uint8(mbp, SMB_DT_DATA);
597 mb_put_uint16le(mbp, resid);
599 error = mb_put_uio(mbp, uio, resid);
603 error = smb_rq_simple(rqp);
606 smb_rq_getreply(rqp, &mdp);
607 md_get_uint8(mdp, &wc);
612 md_get_uint16le(mdp, &resid);
620 smb_write(struct smb_share *ssp, u_int16_t fid, struct uio *uio,
621 struct smb_cred *scred)
623 int error = 0, len, resid;
627 while (uio->uio_resid > 0) {
628 if (uio->uio_resid > INT_MAX)
631 len = (int)uio->uio_resid;
632 error = smb_smb_write(ssp, fid, &len, &resid, uio, scred);
642 * Errors can happen on the copyin, the rpc, etc. So they
643 * imply resid is unreliable. The only safe thing is
644 * to pretend zero bytes made it. We needn't restore the
645 * iovs because callers don't depend on them in error
646 * paths - uio_resid and uio_offset are what matter.
654 smb_smb_echo(struct smb_vc *vcp, struct smb_cred *scred)
660 error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_ECHO, scred, &rqp);
665 mb_put_uint16le(mbp, 1);
668 mb_put_uint32le(mbp, 0);
670 error = smb_rq_simple(rqp);
671 SMBSDEBUG("%d\n", error);