190b2c4f8a
attacks and is required to connect to Windows 2003 servers in their default configuration. This adds an extra field to the SMB header containing the truncated 64-bit MD5 digest of a key (a function of the user's password and the server's authentication challenge), an implicit sequence number, and the message data itself. As signing each message imposes a significant performance penalty, we only enable it if the server will not let us connect without it; this should eventually become an option to mount_smbfs.
930 lines
24 KiB
C
930 lines
24 KiB
C
/*
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* Copyright (c) 2000-2001 Boris Popov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Boris Popov.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* various SMB requests. Most of the routines merely packs data into mbufs.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/lock.h>
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#include <sys/sysctl.h>
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#include <sys/socket.h>
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#include <sys/uio.h>
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#include <sys/iconv.h>
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#include <netsmb/smb.h>
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#include <netsmb/smb_subr.h>
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#include <netsmb/smb_rq.h>
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#include <netsmb/smb_conn.h>
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#include <netsmb/smb_tran.h>
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#include "opt_netsmb.h"
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struct smb_dialect {
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int d_id;
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const char * d_name;
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};
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static struct smb_dialect smb_dialects[] = {
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{SMB_DIALECT_CORE, "PC NETWORK PROGRAM 1.0"},
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{SMB_DIALECT_COREPLUS, "MICROSOFT NETWORKS 1.03"},
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{SMB_DIALECT_LANMAN1_0, "MICROSOFT NETWORKS 3.0"},
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{SMB_DIALECT_LANMAN1_0, "LANMAN1.0"},
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{SMB_DIALECT_LANMAN2_0, "LM1.2X002"},
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{SMB_DIALECT_LANMAN2_0, "Samba"},
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{SMB_DIALECT_NTLM0_12, "NT LANMAN 1.0"},
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{SMB_DIALECT_NTLM0_12, "NT LM 0.12"},
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{-1, NULL}
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};
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#define SMB_DIALECT_MAX (sizeof(smb_dialects) / sizeof(struct smb_dialect) - 2)
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static u_int32_t
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smb_vc_maxread(struct smb_vc *vcp)
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{
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/*
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* Specs say up to 64k data bytes, but Windows traffic
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* uses 60k... no doubt for some good reason.
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*
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* Don't exceed the server's buffer size if signatures
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* are enabled otherwise Windows 2003 chokes. Allow space
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* for the SMB header & a little bit extra.
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*/
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if ((vcp->vc_sopt.sv_caps & SMB_CAP_LARGE_READX) &&
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(vcp->vc_hflags2 & SMB_FLAGS2_SECURITY_SIGNATURE) == 0)
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return (60*1024);
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else
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return (vcp->vc_sopt.sv_maxtx - SMB_HDRLEN - 64);
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}
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static u_int32_t
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smb_vc_maxwrite(struct smb_vc *vcp)
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{
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/*
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* See comment above.
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*/
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if ((vcp->vc_sopt.sv_caps & SMB_CAP_LARGE_WRITEX) &&
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(vcp->vc_hflags2 & SMB_FLAGS2_SECURITY_SIGNATURE) == 0)
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return (60*1024);
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else
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return (vcp->vc_sopt.sv_maxtx - SMB_HDRLEN - 64);
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}
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static int
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smb_smb_nomux(struct smb_vc *vcp, struct smb_cred *scred, const char *name)
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{
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if (scred->scr_td->td_proc == vcp->vc_iod->iod_p)
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return 0;
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SMBERROR("wrong function called(%s)\n", name);
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return EINVAL;
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}
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int
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smb_smb_negotiate(struct smb_vc *vcp, struct smb_cred *scred)
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{
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struct smb_dialect *dp;
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struct smb_sopt *sp = NULL;
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struct smb_rq *rqp;
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struct mbchain *mbp;
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struct mdchain *mdp;
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u_int8_t wc, stime[8], sblen;
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u_int16_t dindex, tw, tw1, swlen, bc;
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int error, maxqsz;
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if (smb_smb_nomux(vcp, scred, __func__) != 0)
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return EINVAL;
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vcp->vc_hflags = 0;
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vcp->vc_hflags2 = 0;
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vcp->obj.co_flags &= ~(SMBV_ENCRYPT);
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sp = &vcp->vc_sopt;
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bzero(sp, sizeof(struct smb_sopt));
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error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_NEGOTIATE, scred, &rqp);
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if (error)
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return error;
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smb_rq_getrequest(rqp, &mbp);
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smb_rq_wstart(rqp);
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smb_rq_wend(rqp);
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smb_rq_bstart(rqp);
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for(dp = smb_dialects; dp->d_id != -1; dp++) {
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mb_put_uint8(mbp, SMB_DT_DIALECT);
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smb_put_dstring(mbp, vcp, dp->d_name, SMB_CS_NONE);
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}
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smb_rq_bend(rqp);
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error = smb_rq_simple(rqp);
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SMBSDEBUG("%d\n", error);
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if (error)
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goto bad;
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smb_rq_getreply(rqp, &mdp);
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do {
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error = md_get_uint8(mdp, &wc);
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if (error)
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break;
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error = md_get_uint16le(mdp, &dindex);
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if (error)
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break;
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if (dindex > 7) {
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SMBERROR("Don't know how to talk with server %s (%d)\n", "xxx", dindex);
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error = EBADRPC;
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break;
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}
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dp = smb_dialects + dindex;
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sp->sv_proto = dp->d_id;
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SMBSDEBUG("Dialect %s (%d, %d)\n", dp->d_name, dindex, wc);
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error = EBADRPC;
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if (dp->d_id >= SMB_DIALECT_NTLM0_12) {
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if (wc != 17)
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break;
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md_get_uint8(mdp, &sp->sv_sm);
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md_get_uint16le(mdp, &sp->sv_maxmux);
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md_get_uint16le(mdp, &sp->sv_maxvcs);
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md_get_uint32le(mdp, &sp->sv_maxtx);
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md_get_uint32le(mdp, &sp->sv_maxraw);
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md_get_uint32le(mdp, &sp->sv_skey);
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md_get_uint32le(mdp, &sp->sv_caps);
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md_get_mem(mdp, stime, 8, MB_MSYSTEM);
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md_get_uint16le(mdp, (u_int16_t*)&sp->sv_tz);
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md_get_uint8(mdp, &sblen);
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if (sblen && (sp->sv_sm & SMB_SM_ENCRYPT)) {
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if (sblen != SMB_MAXCHALLENGELEN) {
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SMBERROR("Unexpected length of security blob (%d)\n", sblen);
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break;
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}
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error = md_get_uint16(mdp, &bc);
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if (error)
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break;
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if (sp->sv_caps & SMB_CAP_EXT_SECURITY)
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md_get_mem(mdp, NULL, 16, MB_MSYSTEM);
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error = md_get_mem(mdp, vcp->vc_ch, sblen, MB_MSYSTEM);
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if (error)
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break;
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vcp->vc_chlen = sblen;
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vcp->obj.co_flags |= SMBV_ENCRYPT;
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}
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#ifdef NETSMBCRYPTO
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if (sp->sv_sm & SMB_SM_SIGS_REQUIRE)
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vcp->vc_hflags2 |= SMB_FLAGS2_SECURITY_SIGNATURE;
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#endif
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vcp->vc_hflags2 |= SMB_FLAGS2_KNOWS_LONG_NAMES;
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if (dp->d_id == SMB_DIALECT_NTLM0_12 &&
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sp->sv_maxtx < 4096 &&
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(sp->sv_caps & SMB_CAP_NT_SMBS) == 0) {
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vcp->obj.co_flags |= SMBV_WIN95;
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SMBSDEBUG("Win95 detected\n");
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}
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} else if (dp->d_id > SMB_DIALECT_CORE) {
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md_get_uint16le(mdp, &tw);
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sp->sv_sm = tw;
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md_get_uint16le(mdp, &tw);
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sp->sv_maxtx = tw;
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md_get_uint16le(mdp, &sp->sv_maxmux);
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md_get_uint16le(mdp, &sp->sv_maxvcs);
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md_get_uint16le(mdp, &tw); /* rawmode */
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md_get_uint32le(mdp, &sp->sv_skey);
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if (wc == 13) { /* >= LANMAN1 */
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md_get_uint16(mdp, &tw); /* time */
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md_get_uint16(mdp, &tw1); /* date */
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md_get_uint16le(mdp, (u_int16_t*)&sp->sv_tz);
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md_get_uint16le(mdp, &swlen);
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if (swlen > SMB_MAXCHALLENGELEN)
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break;
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md_get_uint16(mdp, NULL); /* mbz */
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if (md_get_uint16(mdp, &bc) != 0)
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break;
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if (bc < swlen)
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break;
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if (swlen && (sp->sv_sm & SMB_SM_ENCRYPT)) {
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error = md_get_mem(mdp, vcp->vc_ch, swlen, MB_MSYSTEM);
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if (error)
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break;
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vcp->vc_chlen = swlen;
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vcp->obj.co_flags |= SMBV_ENCRYPT;
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}
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}
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vcp->vc_hflags2 |= SMB_FLAGS2_KNOWS_LONG_NAMES;
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} else { /* an old CORE protocol */
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sp->sv_maxmux = 1;
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}
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error = 0;
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} while (0);
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if (error == 0) {
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vcp->vc_maxvcs = sp->sv_maxvcs;
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if (vcp->vc_maxvcs <= 1) {
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if (vcp->vc_maxvcs == 0)
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vcp->vc_maxvcs = 1;
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}
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if (sp->sv_maxtx <= 0 || sp->sv_maxtx > 0xffff)
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sp->sv_maxtx = 1024;
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else
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sp->sv_maxtx = min(sp->sv_maxtx,
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63*1024 + SMB_HDRLEN + 16);
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SMB_TRAN_GETPARAM(vcp, SMBTP_RCVSZ, &maxqsz);
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vcp->vc_rxmax = min(smb_vc_maxread(vcp), maxqsz - 1024);
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SMB_TRAN_GETPARAM(vcp, SMBTP_SNDSZ, &maxqsz);
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vcp->vc_wxmax = min(smb_vc_maxwrite(vcp), maxqsz - 1024);
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vcp->vc_txmax = min(sp->sv_maxtx, maxqsz);
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SMBSDEBUG("TZ = %d\n", sp->sv_tz);
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SMBSDEBUG("CAPS = %x\n", sp->sv_caps);
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SMBSDEBUG("MAXMUX = %d\n", sp->sv_maxmux);
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SMBSDEBUG("MAXVCS = %d\n", sp->sv_maxvcs);
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SMBSDEBUG("MAXRAW = %d\n", sp->sv_maxraw);
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SMBSDEBUG("MAXTX = %d\n", sp->sv_maxtx);
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}
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bad:
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smb_rq_done(rqp);
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return error;
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}
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int
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smb_smb_ssnsetup(struct smb_vc *vcp, struct smb_cred *scred)
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{
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struct smb_rq *rqp;
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struct mbchain *mbp;
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/* u_int8_t wc;
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u_int16_t tw, tw1;*/
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smb_uniptr unipp, ntencpass = NULL;
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char *pp, *up, *pbuf, *encpass;
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int error, plen, uniplen, ulen, upper;
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upper = 0;
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again:
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vcp->vc_smbuid = SMB_UID_UNKNOWN;
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if (smb_smb_nomux(vcp, scred, __func__) != 0)
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return EINVAL;
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error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_SESSION_SETUP_ANDX, scred, &rqp);
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if (error)
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return error;
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pbuf = malloc(SMB_MAXPASSWORDLEN + 1, M_SMBTEMP, M_WAITOK);
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encpass = malloc(24, M_SMBTEMP, M_WAITOK);
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if (vcp->vc_sopt.sv_sm & SMB_SM_USER) {
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/*
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* We try w/o uppercasing first so Samba mixed case
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* passwords work. If that fails we come back and try
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* uppercasing to satisfy OS/2 and Windows for Workgroups.
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*/
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if (upper++) {
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iconv_convstr(vcp->vc_toupper, pbuf,
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smb_vc_getpass(vcp)/*, SMB_MAXPASSWORDLEN*/);
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} else {
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strncpy(pbuf, smb_vc_getpass(vcp), SMB_MAXPASSWORDLEN);
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pbuf[SMB_MAXPASSWORDLEN] = '\0';
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}
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if (!SMB_UNICODE_STRINGS(vcp))
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iconv_convstr(vcp->vc_toserver, pbuf, pbuf/*,
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SMB_MAXPASSWORDLEN*/);
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if (vcp->vc_sopt.sv_sm & SMB_SM_ENCRYPT) {
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uniplen = plen = 24;
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smb_encrypt(pbuf, vcp->vc_ch, encpass);
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ntencpass = malloc(uniplen, M_SMBTEMP, M_WAITOK);
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if (SMB_UNICODE_STRINGS(vcp)) {
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strncpy(pbuf, smb_vc_getpass(vcp),
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SMB_MAXPASSWORDLEN);
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pbuf[SMB_MAXPASSWORDLEN] = '\0';
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} else
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iconv_convstr(vcp->vc_toserver, pbuf,
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smb_vc_getpass(vcp)/*,
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SMB_MAXPASSWORDLEN*/);
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smb_ntencrypt(pbuf, vcp->vc_ch, (u_char*)ntencpass);
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pp = encpass;
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unipp = ntencpass;
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} else {
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plen = strlen(pbuf) + 1;
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pp = pbuf;
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uniplen = plen * 2;
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ntencpass = malloc(uniplen, M_SMBTEMP, M_WAITOK);
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smb_strtouni(ntencpass, smb_vc_getpass(vcp));
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plen--;
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/*
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* The uniplen is zeroed because Samba cannot deal
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* with this 2nd cleartext password. This Samba
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* "bug" is actually a workaround for problems in
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* Microsoft clients.
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*/
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uniplen = 0/*-= 2*/;
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unipp = ntencpass;
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}
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} else {
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/*
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* In the share security mode password will be used
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* only in the tree authentication
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*/
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pp = "";
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plen = 1;
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unipp = &smb_unieol;
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uniplen = 0 /* sizeof(smb_unieol) */;
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}
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smb_rq_wstart(rqp);
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mbp = &rqp->sr_rq;
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up = vcp->vc_username;
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ulen = strlen(up) + 1;
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/*
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* If userid is null we are attempting anonymous browse login
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* so passwords must be zero length.
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*/
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if (ulen == 1)
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plen = uniplen = 0;
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mb_put_uint8(mbp, 0xff);
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mb_put_uint8(mbp, 0);
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mb_put_uint16le(mbp, 0);
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mb_put_uint16le(mbp, vcp->vc_sopt.sv_maxtx);
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mb_put_uint16le(mbp, vcp->vc_sopt.sv_maxmux);
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mb_put_uint16le(mbp, vcp->vc_number);
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mb_put_uint32le(mbp, vcp->vc_sopt.sv_skey);
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mb_put_uint16le(mbp, plen);
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if (SMB_DIALECT(vcp) < SMB_DIALECT_NTLM0_12) {
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mb_put_uint32le(mbp, 0);
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smb_rq_wend(rqp);
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smb_rq_bstart(rqp);
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mb_put_mem(mbp, pp, plen, MB_MSYSTEM);
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smb_put_dstring(mbp, vcp, up, SMB_CS_NONE);
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} else {
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mb_put_uint16le(mbp, uniplen);
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mb_put_uint32le(mbp, 0); /* reserved */
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mb_put_uint32le(mbp, vcp->obj.co_flags & SMBV_UNICODE ?
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SMB_CAP_UNICODE : 0);
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smb_rq_wend(rqp);
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smb_rq_bstart(rqp);
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mb_put_mem(mbp, pp, plen, MB_MSYSTEM);
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mb_put_mem(mbp, (caddr_t)unipp, uniplen, MB_MSYSTEM);
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smb_put_dstring(mbp, vcp, up, SMB_CS_NONE); /* AccountName */
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smb_put_dstring(mbp, vcp, vcp->vc_domain, SMB_CS_NONE); /* PrimaryDomain */
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smb_put_dstring(mbp, vcp, "FreeBSD", SMB_CS_NONE); /* Client's OS */
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smb_put_dstring(mbp, vcp, "NETSMB", SMB_CS_NONE); /* Client name */
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}
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smb_rq_bend(rqp);
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if (ntencpass)
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free(ntencpass, M_SMBTEMP);
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if (vcp->vc_hflags2 & SMB_FLAGS2_SECURITY_SIGNATURE)
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smb_calcmackey(vcp);
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error = smb_rq_simple(rqp);
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SMBSDEBUG("%d\n", error);
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if (error) {
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if (rqp->sr_errclass == ERRDOS && rqp->sr_serror == ERRnoaccess)
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error = EAUTH;
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goto bad;
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}
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vcp->vc_smbuid = rqp->sr_rpuid;
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bad:
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free(encpass, M_SMBTEMP);
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free(pbuf, M_SMBTEMP);
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smb_rq_done(rqp);
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if (error && upper == 1 && vcp->vc_sopt.sv_sm & SMB_SM_USER)
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goto again;
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return error;
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}
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int
|
|
smb_smb_ssnclose(struct smb_vc *vcp, struct smb_cred *scred)
|
|
{
|
|
struct smb_rq *rqp;
|
|
struct mbchain *mbp;
|
|
int error;
|
|
|
|
if (vcp->vc_smbuid == SMB_UID_UNKNOWN)
|
|
return 0;
|
|
|
|
if (smb_smb_nomux(vcp, scred, __func__) != 0)
|
|
return EINVAL;
|
|
|
|
error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_LOGOFF_ANDX, scred, &rqp);
|
|
if (error)
|
|
return error;
|
|
mbp = &rqp->sr_rq;
|
|
smb_rq_wstart(rqp);
|
|
mb_put_uint8(mbp, 0xff);
|
|
mb_put_uint8(mbp, 0);
|
|
mb_put_uint16le(mbp, 0);
|
|
smb_rq_wend(rqp);
|
|
smb_rq_bstart(rqp);
|
|
smb_rq_bend(rqp);
|
|
error = smb_rq_simple(rqp);
|
|
SMBSDEBUG("%d\n", error);
|
|
smb_rq_done(rqp);
|
|
return error;
|
|
}
|
|
|
|
static char smb_any_share[] = "?????";
|
|
|
|
static char *
|
|
smb_share_typename(int stype)
|
|
{
|
|
char *pp;
|
|
|
|
switch (stype) {
|
|
case SMB_ST_DISK:
|
|
pp = "A:";
|
|
break;
|
|
case SMB_ST_PRINTER:
|
|
pp = smb_any_share; /* can't use LPT: here... */
|
|
break;
|
|
case SMB_ST_PIPE:
|
|
pp = "IPC";
|
|
break;
|
|
case SMB_ST_COMM:
|
|
pp = "COMM";
|
|
break;
|
|
case SMB_ST_ANY:
|
|
default:
|
|
pp = smb_any_share;
|
|
break;
|
|
}
|
|
return pp;
|
|
}
|
|
|
|
int
|
|
smb_smb_treeconnect(struct smb_share *ssp, struct smb_cred *scred)
|
|
{
|
|
struct smb_vc *vcp;
|
|
struct smb_rq rq, *rqp = &rq;
|
|
struct mbchain *mbp;
|
|
char *pp, *pbuf, *encpass;
|
|
int error, plen, caseopt, upper;
|
|
|
|
upper = 0;
|
|
|
|
again:
|
|
|
|
#if 0
|
|
/* Disable Unicode for SMB_COM_TREE_CONNECT_ANDX requests */
|
|
if (SSTOVC(ssp)->vc_hflags2 & SMB_FLAGS2_UNICODE) {
|
|
vcp = SSTOVC(ssp);
|
|
if (vcp->vc_toserver) {
|
|
iconv_close(vcp->vc_toserver);
|
|
/* Use NULL until UTF-8 -> ASCII works */
|
|
vcp->vc_toserver = NULL;
|
|
}
|
|
if (vcp->vc_tolocal) {
|
|
iconv_close(vcp->vc_tolocal);
|
|
/* Use NULL until ASCII -> UTF-8 works*/
|
|
vcp->vc_tolocal = NULL;
|
|
}
|
|
vcp->vc_hflags2 &= ~SMB_FLAGS2_UNICODE;
|
|
}
|
|
#endif
|
|
|
|
ssp->ss_tid = SMB_TID_UNKNOWN;
|
|
error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_TREE_CONNECT_ANDX, scred, &rqp);
|
|
if (error)
|
|
return error;
|
|
vcp = rqp->sr_vc;
|
|
caseopt = SMB_CS_NONE;
|
|
if (vcp->vc_sopt.sv_sm & SMB_SM_USER) {
|
|
plen = 1;
|
|
pp = "";
|
|
pbuf = NULL;
|
|
encpass = NULL;
|
|
} else {
|
|
pbuf = malloc(SMB_MAXPASSWORDLEN + 1, M_SMBTEMP, M_WAITOK);
|
|
encpass = malloc(24, M_SMBTEMP, M_WAITOK);
|
|
/*
|
|
* We try w/o uppercasing first so Samba mixed case
|
|
* passwords work. If that fails we come back and try
|
|
* uppercasing to satisfy OS/2 and Windows for Workgroups.
|
|
*/
|
|
if (upper++) {
|
|
iconv_convstr(vcp->vc_toupper, pbuf,
|
|
smb_share_getpass(ssp)/*,
|
|
SMB_MAXPASSWORDLEN*/);
|
|
} else {
|
|
strncpy(pbuf, smb_share_getpass(ssp),
|
|
SMB_MAXPASSWORDLEN);
|
|
pbuf[SMB_MAXPASSWORDLEN] = '\0';
|
|
}
|
|
if (vcp->vc_sopt.sv_sm & SMB_SM_ENCRYPT) {
|
|
plen = 24;
|
|
smb_encrypt(pbuf, vcp->vc_ch, encpass);
|
|
pp = encpass;
|
|
} else {
|
|
plen = strlen(pbuf) + 1;
|
|
pp = pbuf;
|
|
}
|
|
}
|
|
mbp = &rqp->sr_rq;
|
|
smb_rq_wstart(rqp);
|
|
mb_put_uint8(mbp, 0xff);
|
|
mb_put_uint8(mbp, 0);
|
|
mb_put_uint16le(mbp, 0);
|
|
mb_put_uint16le(mbp, 0); /* Flags */
|
|
mb_put_uint16le(mbp, plen);
|
|
smb_rq_wend(rqp);
|
|
smb_rq_bstart(rqp);
|
|
mb_put_mem(mbp, pp, plen, MB_MSYSTEM);
|
|
smb_put_dmem(mbp, vcp, "\\\\", 2, caseopt);
|
|
pp = vcp->vc_srvname;
|
|
smb_put_dmem(mbp, vcp, pp, strlen(pp), caseopt);
|
|
smb_put_dmem(mbp, vcp, "\\", 1, caseopt);
|
|
pp = ssp->ss_name;
|
|
smb_put_dstring(mbp, vcp, pp, caseopt);
|
|
pp = smb_share_typename(ssp->ss_type);
|
|
smb_put_dstring(mbp, vcp, pp, caseopt);
|
|
smb_rq_bend(rqp);
|
|
error = smb_rq_simple(rqp);
|
|
SMBSDEBUG("%d\n", error);
|
|
if (error)
|
|
goto bad;
|
|
ssp->ss_tid = rqp->sr_rptid;
|
|
ssp->ss_vcgenid = vcp->vc_genid;
|
|
ssp->ss_flags |= SMBS_CONNECTED;
|
|
bad:
|
|
if (encpass)
|
|
free(encpass, M_SMBTEMP);
|
|
if (pbuf)
|
|
free(pbuf, M_SMBTEMP);
|
|
smb_rq_done(rqp);
|
|
if (error && upper == 1)
|
|
goto again;
|
|
return error;
|
|
}
|
|
|
|
int
|
|
smb_smb_treedisconnect(struct smb_share *ssp, struct smb_cred *scred)
|
|
{
|
|
struct smb_rq *rqp;
|
|
struct mbchain *mbp;
|
|
int error;
|
|
|
|
if (ssp->ss_tid == SMB_TID_UNKNOWN)
|
|
return 0;
|
|
error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_TREE_DISCONNECT, scred, &rqp);
|
|
if (error)
|
|
return error;
|
|
mbp = &rqp->sr_rq;
|
|
smb_rq_wstart(rqp);
|
|
smb_rq_wend(rqp);
|
|
smb_rq_bstart(rqp);
|
|
smb_rq_bend(rqp);
|
|
error = smb_rq_simple(rqp);
|
|
SMBSDEBUG("%d\n", error);
|
|
smb_rq_done(rqp);
|
|
ssp->ss_tid = SMB_TID_UNKNOWN;
|
|
return error;
|
|
}
|
|
|
|
static __inline int
|
|
smb_smb_readx(struct smb_share *ssp, u_int16_t fid, int *len, int *rresid,
|
|
struct uio *uio, struct smb_cred *scred)
|
|
{
|
|
struct smb_rq *rqp;
|
|
struct mbchain *mbp;
|
|
struct mdchain *mdp;
|
|
u_int8_t wc;
|
|
int error;
|
|
u_int16_t residhi, residlo, off, doff;
|
|
u_int32_t resid;
|
|
|
|
error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_READ_ANDX, scred, &rqp);
|
|
if (error)
|
|
return error;
|
|
smb_rq_getrequest(rqp, &mbp);
|
|
smb_rq_wstart(rqp);
|
|
mb_put_uint8(mbp, 0xff); /* no secondary command */
|
|
mb_put_uint8(mbp, 0); /* MBZ */
|
|
mb_put_uint16le(mbp, 0); /* offset to secondary */
|
|
mb_put_mem(mbp, (caddr_t)&fid, sizeof(fid), MB_MSYSTEM);
|
|
mb_put_uint32le(mbp, uio->uio_offset);
|
|
*len = min(SSTOVC(ssp)->vc_rxmax, *len);
|
|
mb_put_uint16le(mbp, *len); /* MaxCount */
|
|
mb_put_uint16le(mbp, *len); /* MinCount (only indicates blocking) */
|
|
mb_put_uint32le(mbp, (unsigned)*len >> 16); /* MaxCountHigh */
|
|
mb_put_uint16le(mbp, *len); /* Remaining ("obsolete") */
|
|
mb_put_uint32le(mbp, uio->uio_offset >> 32); /* OffsetHigh */
|
|
smb_rq_wend(rqp);
|
|
smb_rq_bstart(rqp);
|
|
smb_rq_bend(rqp);
|
|
do {
|
|
error = smb_rq_simple(rqp);
|
|
if (error)
|
|
break;
|
|
smb_rq_getreply(rqp, &mdp);
|
|
off = SMB_HDRLEN;
|
|
md_get_uint8(mdp, &wc);
|
|
off++;
|
|
if (wc != 12) {
|
|
error = EBADRPC;
|
|
break;
|
|
}
|
|
md_get_uint8(mdp, NULL);
|
|
off++;
|
|
md_get_uint8(mdp, NULL);
|
|
off++;
|
|
md_get_uint16le(mdp, NULL);
|
|
off += 2;
|
|
md_get_uint16le(mdp, NULL);
|
|
off += 2;
|
|
md_get_uint16le(mdp, NULL); /* data compaction mode */
|
|
off += 2;
|
|
md_get_uint16le(mdp, NULL);
|
|
off += 2;
|
|
md_get_uint16le(mdp, &residlo);
|
|
off += 2;
|
|
md_get_uint16le(mdp, &doff); /* data offset */
|
|
off += 2;
|
|
md_get_uint16le(mdp, &residhi);
|
|
off += 2;
|
|
resid = (residhi << 16) | residlo;
|
|
md_get_mem(mdp, NULL, 4 * 2, MB_MSYSTEM);
|
|
off += 4*2;
|
|
md_get_uint16le(mdp, NULL); /* ByteCount */
|
|
off += 2;
|
|
if (doff > off) /* pad byte(s)? */
|
|
md_get_mem(mdp, NULL, doff - off, MB_MSYSTEM);
|
|
if (resid == 0) {
|
|
*rresid = resid;
|
|
break;
|
|
}
|
|
error = md_get_uio(mdp, uio, resid);
|
|
if (error)
|
|
break;
|
|
*rresid = resid;
|
|
} while(0);
|
|
smb_rq_done(rqp);
|
|
return (error);
|
|
}
|
|
|
|
static __inline int
|
|
smb_smb_writex(struct smb_share *ssp, u_int16_t fid, int *len, int *rresid,
|
|
struct uio *uio, struct smb_cred *scred)
|
|
{
|
|
struct smb_rq *rqp;
|
|
struct mbchain *mbp;
|
|
struct mdchain *mdp;
|
|
int error;
|
|
u_int8_t wc;
|
|
u_int16_t resid;
|
|
|
|
error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_WRITE_ANDX, scred, &rqp);
|
|
if (error)
|
|
return (error);
|
|
smb_rq_getrequest(rqp, &mbp);
|
|
smb_rq_wstart(rqp);
|
|
mb_put_uint8(mbp, 0xff); /* no secondary command */
|
|
mb_put_uint8(mbp, 0); /* MBZ */
|
|
mb_put_uint16le(mbp, 0); /* offset to secondary */
|
|
mb_put_mem(mbp, (caddr_t)&fid, sizeof(fid), MB_MSYSTEM);
|
|
mb_put_uint32le(mbp, uio->uio_offset);
|
|
mb_put_uint32le(mbp, 0); /* MBZ (timeout) */
|
|
mb_put_uint16le(mbp, 0); /* !write-thru */
|
|
mb_put_uint16le(mbp, 0);
|
|
*len = min(SSTOVC(ssp)->vc_wxmax, *len);
|
|
mb_put_uint16le(mbp, (unsigned)*len >> 16);
|
|
mb_put_uint16le(mbp, *len);
|
|
mb_put_uint16le(mbp, 64); /* data offset from header start */
|
|
mb_put_uint32le(mbp, uio->uio_offset >> 32); /* OffsetHigh */
|
|
smb_rq_wend(rqp);
|
|
smb_rq_bstart(rqp);
|
|
do {
|
|
mb_put_uint8(mbp, 0xee); /* mimic xp pad byte! */
|
|
error = mb_put_uio(mbp, uio, *len);
|
|
if (error)
|
|
break;
|
|
smb_rq_bend(rqp);
|
|
error = smb_rq_simple(rqp);
|
|
if (error)
|
|
break;
|
|
smb_rq_getreply(rqp, &mdp);
|
|
md_get_uint8(mdp, &wc);
|
|
if (wc != 6) {
|
|
error = EBADRPC;
|
|
break;
|
|
}
|
|
md_get_uint8(mdp, NULL);
|
|
md_get_uint8(mdp, NULL);
|
|
md_get_uint16le(mdp, NULL);
|
|
md_get_uint16le(mdp, &resid);
|
|
*rresid = resid;
|
|
} while(0);
|
|
|
|
smb_rq_done(rqp);
|
|
return (error);
|
|
}
|
|
|
|
static __inline int
|
|
smb_smb_read(struct smb_share *ssp, u_int16_t fid,
|
|
int *len, int *rresid, struct uio *uio, struct smb_cred *scred)
|
|
{
|
|
struct smb_rq *rqp;
|
|
struct mbchain *mbp;
|
|
struct mdchain *mdp;
|
|
u_int16_t resid, bc;
|
|
u_int8_t wc;
|
|
int error, rlen, blksz;
|
|
|
|
if (SSTOVC(ssp)->vc_sopt.sv_caps & SMB_CAP_LARGE_READX)
|
|
return (smb_smb_readx(ssp, fid, len, rresid, uio, scred));
|
|
|
|
error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_READ, scred, &rqp);
|
|
if (error)
|
|
return error;
|
|
|
|
blksz = SSTOVC(ssp)->vc_txmax - SMB_HDRLEN - 16;
|
|
rlen = *len = min(blksz, *len);
|
|
|
|
smb_rq_getrequest(rqp, &mbp);
|
|
smb_rq_wstart(rqp);
|
|
mb_put_mem(mbp, (caddr_t)&fid, sizeof(fid), MB_MSYSTEM);
|
|
mb_put_uint16le(mbp, rlen);
|
|
mb_put_uint32le(mbp, uio->uio_offset);
|
|
mb_put_uint16le(mbp, min(uio->uio_resid, 0xffff));
|
|
smb_rq_wend(rqp);
|
|
smb_rq_bstart(rqp);
|
|
smb_rq_bend(rqp);
|
|
do {
|
|
error = smb_rq_simple(rqp);
|
|
if (error)
|
|
break;
|
|
smb_rq_getreply(rqp, &mdp);
|
|
md_get_uint8(mdp, &wc);
|
|
if (wc != 5) {
|
|
error = EBADRPC;
|
|
break;
|
|
}
|
|
md_get_uint16le(mdp, &resid);
|
|
md_get_mem(mdp, NULL, 4 * 2, MB_MSYSTEM);
|
|
md_get_uint16le(mdp, &bc);
|
|
md_get_uint8(mdp, NULL); /* ignore buffer type */
|
|
md_get_uint16le(mdp, &resid);
|
|
if (resid == 0) {
|
|
*rresid = resid;
|
|
break;
|
|
}
|
|
error = md_get_uio(mdp, uio, resid);
|
|
if (error)
|
|
break;
|
|
*rresid = resid;
|
|
} while(0);
|
|
smb_rq_done(rqp);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
smb_read(struct smb_share *ssp, u_int16_t fid, struct uio *uio,
|
|
struct smb_cred *scred)
|
|
{
|
|
int tsize, len, resid;
|
|
int error = 0;
|
|
|
|
tsize = uio->uio_resid;
|
|
while (tsize > 0) {
|
|
len = tsize;
|
|
error = smb_smb_read(ssp, fid, &len, &resid, uio, scred);
|
|
if (error)
|
|
break;
|
|
tsize -= resid;
|
|
if (resid < len)
|
|
break;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
static __inline int
|
|
smb_smb_write(struct smb_share *ssp, u_int16_t fid, int *len, int *rresid,
|
|
struct uio *uio, struct smb_cred *scred)
|
|
{
|
|
struct smb_rq *rqp;
|
|
struct mbchain *mbp;
|
|
struct mdchain *mdp;
|
|
u_int16_t resid;
|
|
u_int8_t wc;
|
|
int error, blksz;
|
|
|
|
if (*len && SSTOVC(ssp)->vc_sopt.sv_caps & SMB_CAP_LARGE_WRITEX)
|
|
return (smb_smb_writex(ssp, fid, len, rresid, uio, scred));
|
|
|
|
blksz = SSTOVC(ssp)->vc_txmax - SMB_HDRLEN - 16;
|
|
if (blksz > 0xffff)
|
|
blksz = 0xffff;
|
|
|
|
resid = *len = min(blksz, *len);
|
|
|
|
error = smb_rq_alloc(SSTOCP(ssp), SMB_COM_WRITE, scred, &rqp);
|
|
if (error)
|
|
return error;
|
|
smb_rq_getrequest(rqp, &mbp);
|
|
smb_rq_wstart(rqp);
|
|
mb_put_mem(mbp, (caddr_t)&fid, sizeof(fid), MB_MSYSTEM);
|
|
mb_put_uint16le(mbp, resid);
|
|
mb_put_uint32le(mbp, uio->uio_offset);
|
|
mb_put_uint16le(mbp, min(uio->uio_resid, 0xffff));
|
|
smb_rq_wend(rqp);
|
|
smb_rq_bstart(rqp);
|
|
mb_put_uint8(mbp, SMB_DT_DATA);
|
|
mb_put_uint16le(mbp, resid);
|
|
do {
|
|
error = mb_put_uio(mbp, uio, resid);
|
|
if (error)
|
|
break;
|
|
smb_rq_bend(rqp);
|
|
error = smb_rq_simple(rqp);
|
|
if (error)
|
|
break;
|
|
smb_rq_getreply(rqp, &mdp);
|
|
md_get_uint8(mdp, &wc);
|
|
if (wc != 1) {
|
|
error = EBADRPC;
|
|
break;
|
|
}
|
|
md_get_uint16le(mdp, &resid);
|
|
*rresid = resid;
|
|
} while(0);
|
|
smb_rq_done(rqp);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
smb_write(struct smb_share *ssp, u_int16_t fid, struct uio *uio,
|
|
struct smb_cred *scred)
|
|
{
|
|
int error = 0, len, tsize, resid;
|
|
struct uio olduio;
|
|
|
|
tsize = uio->uio_resid;
|
|
olduio = *uio;
|
|
while (tsize > 0) {
|
|
len = tsize;
|
|
error = smb_smb_write(ssp, fid, &len, &resid, uio, scred);
|
|
if (error)
|
|
break;
|
|
if (resid < len) {
|
|
error = EIO;
|
|
break;
|
|
}
|
|
tsize -= resid;
|
|
}
|
|
if (error) {
|
|
/*
|
|
* Errors can happen on the copyin, the rpc, etc. So they
|
|
* imply resid is unreliable. The only safe thing is
|
|
* to pretend zero bytes made it. We needn't restore the
|
|
* iovs because callers don't depend on them in error
|
|
* paths - uio_resid and uio_offset are what matter.
|
|
*/
|
|
*uio = olduio;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
int
|
|
smb_smb_echo(struct smb_vc *vcp, struct smb_cred *scred)
|
|
{
|
|
struct smb_rq *rqp;
|
|
struct mbchain *mbp;
|
|
int error;
|
|
|
|
error = smb_rq_alloc(VCTOCP(vcp), SMB_COM_ECHO, scred, &rqp);
|
|
if (error)
|
|
return error;
|
|
mbp = &rqp->sr_rq;
|
|
smb_rq_wstart(rqp);
|
|
mb_put_uint16le(mbp, 1);
|
|
smb_rq_wend(rqp);
|
|
smb_rq_bstart(rqp);
|
|
mb_put_uint32le(mbp, 0);
|
|
smb_rq_bend(rqp);
|
|
error = smb_rq_simple(rqp);
|
|
SMBSDEBUG("%d\n", error);
|
|
smb_rq_done(rqp);
|
|
return error;
|
|
}
|