smb_rq.c revision 184205
1139823Simp/*- 275374Sbp * Copyright (c) 2000-2001, Boris Popov 375374Sbp * All rights reserved. 475374Sbp * 575374Sbp * Redistribution and use in source and binary forms, with or without 675374Sbp * modification, are permitted provided that the following conditions 775374Sbp * are met: 875374Sbp * 1. Redistributions of source code must retain the above copyright 975374Sbp * notice, this list of conditions and the following disclaimer. 1075374Sbp * 2. Redistributions in binary form must reproduce the above copyright 1175374Sbp * notice, this list of conditions and the following disclaimer in the 1275374Sbp * documentation and/or other materials provided with the distribution. 1375374Sbp * 3. All advertising materials mentioning features or use of this software 1475374Sbp * must display the following acknowledgement: 1575374Sbp * This product includes software developed by Boris Popov. 1675374Sbp * 4. Neither the name of the author nor the names of any co-contributors 1775374Sbp * may be used to endorse or promote products derived from this software 1875374Sbp * without specific prior written permission. 1975374Sbp * 2075374Sbp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2175374Sbp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2275374Sbp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2375374Sbp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2475374Sbp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2575374Sbp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2675374Sbp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2775374Sbp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2875374Sbp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2975374Sbp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3075374Sbp * SUCH DAMAGE. 3175374Sbp */ 32116189Sobrien 33116189Sobrien#include <sys/cdefs.h> 34116189Sobrien__FBSDID("$FreeBSD: head/sys/netsmb/smb_rq.c 184205 2008-10-23 15:53:51Z des $"); 35116189Sobrien 3675374Sbp#include <sys/param.h> 3775374Sbp#include <sys/systm.h> 3895533Smike#include <sys/endian.h> 3975374Sbp#include <sys/kernel.h> 4075374Sbp#include <sys/malloc.h> 41129880Sphk#include <sys/module.h> 4275374Sbp#include <sys/proc.h> 4375374Sbp#include <sys/lock.h> 4475374Sbp#include <sys/sysctl.h> 4575374Sbp#include <sys/socket.h> 4675374Sbp#include <sys/socketvar.h> 4775374Sbp#include <sys/mbuf.h> 4875374Sbp 4975374Sbp#include <netsmb/smb.h> 5075374Sbp#include <netsmb/smb_conn.h> 5175374Sbp#include <netsmb/smb_rq.h> 5275374Sbp#include <netsmb/smb_subr.h> 5375374Sbp#include <netsmb/smb_tran.h> 5475374Sbp 5575374SbpMALLOC_DEFINE(M_SMBRQ, "SMBRQ", "SMB request"); 5675374Sbp 5775374SbpMODULE_DEPEND(netsmb, libmchain, 1, 1, 1); 5875374Sbp 5975374Sbpstatic int smb_rq_reply(struct smb_rq *rqp); 6075374Sbpstatic int smb_rq_enqueue(struct smb_rq *rqp); 6175374Sbpstatic int smb_rq_getenv(struct smb_connobj *layer, 6275374Sbp struct smb_vc **vcpp, struct smb_share **sspp); 6375374Sbpstatic int smb_rq_new(struct smb_rq *rqp, u_char cmd); 6475374Sbpstatic int smb_t2_reply(struct smb_t2rq *t2p); 6575374Sbp 6675374Sbpint 6775374Sbpsmb_rq_alloc(struct smb_connobj *layer, u_char cmd, struct smb_cred *scred, 6875374Sbp struct smb_rq **rqpp) 6975374Sbp{ 7075374Sbp struct smb_rq *rqp; 7175374Sbp int error; 7275374Sbp 73184205Sdes rqp = malloc(sizeof(*rqp), M_SMBRQ, M_WAITOK); 7475374Sbp if (rqp == NULL) 7575374Sbp return ENOMEM; 7675374Sbp error = smb_rq_init(rqp, layer, cmd, scred); 7775374Sbp rqp->sr_flags |= SMBR_ALLOCED; 7875374Sbp if (error) { 7975374Sbp smb_rq_done(rqp); 8075374Sbp return error; 8175374Sbp } 8275374Sbp *rqpp = rqp; 8375374Sbp return 0; 8475374Sbp} 8575374Sbp 8675374Sbpstatic char tzero[12]; 8775374Sbp 8875374Sbpint 8975374Sbpsmb_rq_init(struct smb_rq *rqp, struct smb_connobj *layer, u_char cmd, 9075374Sbp struct smb_cred *scred) 9175374Sbp{ 9275374Sbp int error; 9375374Sbp 9475374Sbp bzero(rqp, sizeof(*rqp)); 9575374Sbp smb_sl_init(&rqp->sr_slock, "srslock"); 9675374Sbp error = smb_rq_getenv(layer, &rqp->sr_vc, &rqp->sr_share); 9775374Sbp if (error) 9875374Sbp return error; 9975374Sbp error = smb_vc_access(rqp->sr_vc, scred, SMBM_EXEC); 10075374Sbp if (error) 10175374Sbp return error; 10275374Sbp if (rqp->sr_share) { 10375374Sbp error = smb_share_access(rqp->sr_share, scred, SMBM_EXEC); 10475374Sbp if (error) 10575374Sbp return error; 10675374Sbp } 10775374Sbp rqp->sr_cred = scred; 10875374Sbp rqp->sr_mid = smb_vc_nextmid(rqp->sr_vc); 10975374Sbp return smb_rq_new(rqp, cmd); 11075374Sbp} 11175374Sbp 11275374Sbpstatic int 11375374Sbpsmb_rq_new(struct smb_rq *rqp, u_char cmd) 11475374Sbp{ 11575374Sbp struct smb_vc *vcp = rqp->sr_vc; 11675374Sbp struct mbchain *mbp = &rqp->sr_rq; 11775374Sbp int error; 118124087Stjr u_int16_t flags2; 11975374Sbp 12075374Sbp rqp->sr_sendcnt = 0; 12175374Sbp mb_done(mbp); 12275374Sbp md_done(&rqp->sr_rp); 12375374Sbp error = mb_init(mbp); 12475374Sbp if (error) 12575374Sbp return error; 12675374Sbp mb_put_mem(mbp, SMB_SIGNATURE, SMB_SIGLEN, MB_MSYSTEM); 12775374Sbp mb_put_uint8(mbp, cmd); 12875374Sbp mb_put_uint32le(mbp, 0); /* DosError */ 12975374Sbp mb_put_uint8(mbp, vcp->vc_hflags); 130124087Stjr flags2 = vcp->vc_hflags2; 131103391Sbp if (cmd == SMB_COM_TRANSACTION || cmd == SMB_COM_TRANSACTION_SECONDARY) 132124087Stjr flags2 &= ~SMB_FLAGS2_UNICODE; 133124087Stjr if (cmd == SMB_COM_NEGOTIATE) 134124087Stjr flags2 &= ~SMB_FLAGS2_SECURITY_SIGNATURE; 135124087Stjr mb_put_uint16le(mbp, flags2); 136124087Stjr if ((flags2 & SMB_FLAGS2_SECURITY_SIGNATURE) == 0) { 137124087Stjr mb_put_mem(mbp, tzero, 12, MB_MSYSTEM); 138124087Stjr rqp->sr_rqsig = NULL; 139124087Stjr } else { 140124087Stjr mb_put_uint16le(mbp, 0 /*scred->sc_p->p_pid >> 16*/); 141124087Stjr rqp->sr_rqsig = (u_int8_t *)mb_reserve(mbp, 8); 142124087Stjr mb_put_uint16le(mbp, 0); 143124087Stjr } 144161523Smarcel rqp->sr_rqtid = mb_reserve(mbp, sizeof(u_int16_t)); 14575374Sbp mb_put_uint16le(mbp, 1 /*scred->sc_p->p_pid & 0xffff*/); 146161523Smarcel rqp->sr_rquid = mb_reserve(mbp, sizeof(u_int16_t)); 14775374Sbp mb_put_uint16le(mbp, rqp->sr_mid); 14875374Sbp return 0; 14975374Sbp} 15075374Sbp 15175374Sbpvoid 15275374Sbpsmb_rq_done(struct smb_rq *rqp) 15375374Sbp{ 15475374Sbp mb_done(&rqp->sr_rq); 15575374Sbp md_done(&rqp->sr_rp); 15675374Sbp smb_sl_destroy(&rqp->sr_slock); 15775374Sbp if (rqp->sr_flags & SMBR_ALLOCED) 15875374Sbp free(rqp, M_SMBRQ); 15975374Sbp} 16075374Sbp 16175374Sbp/* 16275374Sbp * Simple request-reply exchange 16375374Sbp */ 16475374Sbpint 16575374Sbpsmb_rq_simple(struct smb_rq *rqp) 16675374Sbp{ 16775374Sbp struct smb_vc *vcp = rqp->sr_vc; 16875374Sbp int error = EINVAL, i; 16975374Sbp 17075374Sbp for (i = 0; i < SMB_MAXRCN; i++) { 17175374Sbp rqp->sr_flags &= ~SMBR_RESTART; 17275374Sbp rqp->sr_timo = vcp->vc_timo; 17375374Sbp rqp->sr_state = SMBRQ_NOTSENT; 17475374Sbp error = smb_rq_enqueue(rqp); 17575374Sbp if (error) 17675374Sbp return error; 17775374Sbp error = smb_rq_reply(rqp); 17875374Sbp if (error == 0) 17975374Sbp break; 18075374Sbp if ((rqp->sr_flags & (SMBR_RESTART | SMBR_NORESTART)) != SMBR_RESTART) 18175374Sbp break; 18275374Sbp } 18375374Sbp return error; 18475374Sbp} 18575374Sbp 18675374Sbpstatic int 18775374Sbpsmb_rq_enqueue(struct smb_rq *rqp) 18875374Sbp{ 18975374Sbp struct smb_share *ssp = rqp->sr_share; 19075374Sbp int error; 19175374Sbp 19275374Sbp if (ssp == NULL || rqp->sr_cred == &rqp->sr_vc->vc_iod->iod_scred) { 19375374Sbp return smb_iod_addrq(rqp); 19475374Sbp } 19575374Sbp for (;;) { 19675374Sbp SMBS_ST_LOCK(ssp); 19775374Sbp if (ssp->ss_flags & SMBS_RECONNECTING) { 19875374Sbp msleep(&ssp->ss_vcgenid, SMBS_ST_LOCKPTR(ssp), 19975374Sbp PWAIT | PDROP, "90trcn", hz); 200112888Sjeff if (smb_td_intr(rqp->sr_cred->scr_td)) 20175374Sbp return EINTR; 20275374Sbp continue; 20375374Sbp } 20475374Sbp if (smb_share_valid(ssp) || (ssp->ss_flags & SMBS_CONNECTED) == 0) { 20575374Sbp SMBS_ST_UNLOCK(ssp); 20675374Sbp } else { 20775374Sbp SMBS_ST_UNLOCK(ssp); 20875374Sbp error = smb_iod_request(rqp->sr_vc->vc_iod, 20975374Sbp SMBIOD_EV_TREECONNECT | SMBIOD_EV_SYNC, ssp); 21075374Sbp if (error) 21175374Sbp return error; 21275374Sbp } 21375374Sbp error = smb_iod_addrq(rqp); 21475374Sbp if (error != EXDEV) 21575374Sbp break; 21675374Sbp } 21775374Sbp return error; 21875374Sbp} 21975374Sbp 22075374Sbpvoid 22175374Sbpsmb_rq_wstart(struct smb_rq *rqp) 22275374Sbp{ 22375374Sbp rqp->sr_wcount = mb_reserve(&rqp->sr_rq, sizeof(u_int8_t)); 22475374Sbp rqp->sr_rq.mb_count = 0; 22575374Sbp} 22675374Sbp 22775374Sbpvoid 22875374Sbpsmb_rq_wend(struct smb_rq *rqp) 22975374Sbp{ 23075374Sbp if (rqp->sr_wcount == NULL) { 23175374Sbp SMBERROR("no wcount\n"); /* actually panic */ 23275374Sbp return; 23375374Sbp } 23475374Sbp if (rqp->sr_rq.mb_count & 1) 23575374Sbp SMBERROR("odd word count\n"); 23675374Sbp *rqp->sr_wcount = rqp->sr_rq.mb_count / 2; 23775374Sbp} 23875374Sbp 23975374Sbpvoid 24075374Sbpsmb_rq_bstart(struct smb_rq *rqp) 24175374Sbp{ 242161523Smarcel rqp->sr_bcount = mb_reserve(&rqp->sr_rq, sizeof(u_short)); 24375374Sbp rqp->sr_rq.mb_count = 0; 24475374Sbp} 24575374Sbp 24675374Sbpvoid 24775374Sbpsmb_rq_bend(struct smb_rq *rqp) 24875374Sbp{ 24975374Sbp int bcnt; 25075374Sbp 25175374Sbp if (rqp->sr_bcount == NULL) { 25275374Sbp SMBERROR("no bcount\n"); /* actually panic */ 25375374Sbp return; 25475374Sbp } 25575374Sbp bcnt = rqp->sr_rq.mb_count; 25675374Sbp if (bcnt > 0xffff) 25775374Sbp SMBERROR("byte count too large (%d)\n", bcnt); 258161523Smarcel le16enc(rqp->sr_bcount, bcnt); 25975374Sbp} 26075374Sbp 26175374Sbpint 26275374Sbpsmb_rq_intr(struct smb_rq *rqp) 26375374Sbp{ 26475374Sbp if (rqp->sr_flags & SMBR_INTR) 26575374Sbp return EINTR; 266112888Sjeff return smb_td_intr(rqp->sr_cred->scr_td); 26775374Sbp} 26875374Sbp 26975374Sbpint 27075374Sbpsmb_rq_getrequest(struct smb_rq *rqp, struct mbchain **mbpp) 27175374Sbp{ 27275374Sbp *mbpp = &rqp->sr_rq; 27375374Sbp return 0; 27475374Sbp} 27575374Sbp 27675374Sbpint 27775374Sbpsmb_rq_getreply(struct smb_rq *rqp, struct mdchain **mbpp) 27875374Sbp{ 27975374Sbp *mbpp = &rqp->sr_rp; 28075374Sbp return 0; 28175374Sbp} 28275374Sbp 28375374Sbpstatic int 28475374Sbpsmb_rq_getenv(struct smb_connobj *layer, 28575374Sbp struct smb_vc **vcpp, struct smb_share **sspp) 28675374Sbp{ 28775374Sbp struct smb_vc *vcp = NULL; 28875374Sbp struct smb_share *ssp = NULL; 28975374Sbp struct smb_connobj *cp; 29075374Sbp int error = 0; 29175374Sbp 29275374Sbp switch (layer->co_level) { 29375374Sbp case SMBL_VC: 29475374Sbp vcp = CPTOVC(layer); 29575374Sbp if (layer->co_parent == NULL) { 29675374Sbp SMBERROR("zombie VC %s\n", vcp->vc_srvname); 29775374Sbp error = EINVAL; 29875374Sbp break; 29975374Sbp } 30075374Sbp break; 30175374Sbp case SMBL_SHARE: 30275374Sbp ssp = CPTOSS(layer); 30375374Sbp cp = layer->co_parent; 30475374Sbp if (cp == NULL) { 30575374Sbp SMBERROR("zombie share %s\n", ssp->ss_name); 30675374Sbp error = EINVAL; 30775374Sbp break; 30875374Sbp } 30975374Sbp error = smb_rq_getenv(cp, &vcp, NULL); 31075374Sbp if (error) 31175374Sbp break; 31275374Sbp break; 31375374Sbp default: 31475374Sbp SMBERROR("invalid layer %d passed\n", layer->co_level); 31575374Sbp error = EINVAL; 31675374Sbp } 31775374Sbp if (vcpp) 31875374Sbp *vcpp = vcp; 31975374Sbp if (sspp) 32075374Sbp *sspp = ssp; 32175374Sbp return error; 32275374Sbp} 32375374Sbp 32475374Sbp/* 32575374Sbp * Wait for reply on the request 32675374Sbp */ 32775374Sbpstatic int 32875374Sbpsmb_rq_reply(struct smb_rq *rqp) 32975374Sbp{ 33075374Sbp struct mdchain *mdp = &rqp->sr_rp; 33175374Sbp u_int32_t tdw; 33275374Sbp u_int8_t tb; 33375374Sbp int error, rperror = 0; 33475374Sbp 33575374Sbp error = smb_iod_waitrq(rqp); 33675374Sbp if (error) 33775374Sbp return error; 33875374Sbp error = md_get_uint32(mdp, &tdw); 33975374Sbp if (error) 34075374Sbp return error; 34175374Sbp error = md_get_uint8(mdp, &tb); 34275374Sbp if (rqp->sr_vc->vc_hflags2 & SMB_FLAGS2_ERR_STATUS) { 34375374Sbp error = md_get_uint32le(mdp, &rqp->sr_error); 34475374Sbp } else { 34575374Sbp error = md_get_uint8(mdp, &rqp->sr_errclass); 34675374Sbp error = md_get_uint8(mdp, &tb); 34775374Sbp error = md_get_uint16le(mdp, &rqp->sr_serror); 34875374Sbp if (!error) 34975374Sbp rperror = smb_maperror(rqp->sr_errclass, rqp->sr_serror); 35075374Sbp } 35175374Sbp error = md_get_uint8(mdp, &rqp->sr_rpflags); 35275374Sbp error = md_get_uint16le(mdp, &rqp->sr_rpflags2); 35375374Sbp 35475374Sbp error = md_get_uint32(mdp, &tdw); 35575374Sbp error = md_get_uint32(mdp, &tdw); 35675374Sbp error = md_get_uint32(mdp, &tdw); 35775374Sbp 35875374Sbp error = md_get_uint16le(mdp, &rqp->sr_rptid); 35975374Sbp error = md_get_uint16le(mdp, &rqp->sr_rppid); 36075374Sbp error = md_get_uint16le(mdp, &rqp->sr_rpuid); 36175374Sbp error = md_get_uint16le(mdp, &rqp->sr_rpmid); 36275374Sbp 363124087Stjr if (error == 0 && 364124087Stjr (rqp->sr_vc->vc_hflags2 & SMB_FLAGS2_SECURITY_SIGNATURE)) 365124087Stjr error = smb_rq_verify(rqp); 366124087Stjr 36775374Sbp SMBSDEBUG("M:%04x, P:%04x, U:%04x, T:%04x, E: %d:%d\n", 36875374Sbp rqp->sr_rpmid, rqp->sr_rppid, rqp->sr_rpuid, rqp->sr_rptid, 36975374Sbp rqp->sr_errclass, rqp->sr_serror); 37075374Sbp return error ? error : rperror; 37175374Sbp} 37275374Sbp 37375374Sbp 37475374Sbp#define ALIGN4(a) (((a) + 3) & ~3) 37575374Sbp 37675374Sbp/* 37775374Sbp * TRANS2 request implementation 37875374Sbp */ 37975374Sbpint 38075374Sbpsmb_t2_alloc(struct smb_connobj *layer, u_short setup, struct smb_cred *scred, 38175374Sbp struct smb_t2rq **t2pp) 38275374Sbp{ 38375374Sbp struct smb_t2rq *t2p; 38475374Sbp int error; 38575374Sbp 386184205Sdes t2p = malloc(sizeof(*t2p), M_SMBRQ, M_WAITOK); 38775374Sbp if (t2p == NULL) 38875374Sbp return ENOMEM; 38975374Sbp error = smb_t2_init(t2p, layer, setup, scred); 39075374Sbp t2p->t2_flags |= SMBT2_ALLOCED; 39175374Sbp if (error) { 39275374Sbp smb_t2_done(t2p); 39375374Sbp return error; 39475374Sbp } 39575374Sbp *t2pp = t2p; 39675374Sbp return 0; 39775374Sbp} 39875374Sbp 39975374Sbpint 40075374Sbpsmb_t2_init(struct smb_t2rq *t2p, struct smb_connobj *source, u_short setup, 40175374Sbp struct smb_cred *scred) 40275374Sbp{ 40375374Sbp int error; 40475374Sbp 40575374Sbp bzero(t2p, sizeof(*t2p)); 40675374Sbp t2p->t2_source = source; 40775374Sbp t2p->t2_setupcount = 1; 40875374Sbp t2p->t2_setupdata = t2p->t2_setup; 40975374Sbp t2p->t2_setup[0] = setup; 41075374Sbp t2p->t2_fid = 0xffff; 41175374Sbp t2p->t2_cred = scred; 41275374Sbp error = smb_rq_getenv(source, &t2p->t2_vc, NULL); 41375374Sbp if (error) 41475374Sbp return error; 41575374Sbp return 0; 41675374Sbp} 41775374Sbp 41875374Sbpvoid 41975374Sbpsmb_t2_done(struct smb_t2rq *t2p) 42075374Sbp{ 42175374Sbp mb_done(&t2p->t2_tparam); 42275374Sbp mb_done(&t2p->t2_tdata); 42375374Sbp md_done(&t2p->t2_rparam); 42475374Sbp md_done(&t2p->t2_rdata); 42575374Sbp if (t2p->t2_flags & SMBT2_ALLOCED) 42675374Sbp free(t2p, M_SMBRQ); 42775374Sbp} 42875374Sbp 42975374Sbpstatic int 43075374Sbpsmb_t2_placedata(struct mbuf *mtop, u_int16_t offset, u_int16_t count, 43175374Sbp struct mdchain *mdp) 43275374Sbp{ 43375374Sbp struct mbuf *m, *m0; 43475374Sbp int len; 43575374Sbp 436177599Sru m0 = m_split(mtop, offset, M_WAIT); 437103554Sphk len = m_length(m0, &m); 43875374Sbp m->m_len -= len - count; 43975374Sbp if (mdp->md_top == NULL) { 44075374Sbp md_initm(mdp, m0); 44175374Sbp } else 44275374Sbp m_cat(mdp->md_top, m0); 44375374Sbp return 0; 44475374Sbp} 44575374Sbp 44675374Sbpstatic int 44775374Sbpsmb_t2_reply(struct smb_t2rq *t2p) 44875374Sbp{ 44975374Sbp struct mdchain *mdp; 45075374Sbp struct smb_rq *rqp = t2p->t2_rq; 45175374Sbp int error, totpgot, totdgot; 45275374Sbp u_int16_t totpcount, totdcount, pcount, poff, doff, pdisp, ddisp; 45375374Sbp u_int16_t tmp, bc, dcount; 45475374Sbp u_int8_t wc; 45575374Sbp 45675374Sbp error = smb_rq_reply(rqp); 45775374Sbp if (error) 45875374Sbp return error; 45975374Sbp if ((t2p->t2_flags & SMBT2_ALLSENT) == 0) { 46075374Sbp /* 46175374Sbp * this is an interim response, ignore it. 46275374Sbp */ 46375374Sbp SMBRQ_SLOCK(rqp); 46475374Sbp md_next_record(&rqp->sr_rp); 46575374Sbp SMBRQ_SUNLOCK(rqp); 46675374Sbp return 0; 46775374Sbp } 46875374Sbp /* 46988741Sbp * Now we have to get all subsequent responses. The CIFS specification 47088741Sbp * says that they can be disordered which is weird. 47175374Sbp * TODO: timo 47275374Sbp */ 47375374Sbp totpgot = totdgot = 0; 47475374Sbp totpcount = totdcount = 0xffff; 47575374Sbp mdp = &rqp->sr_rp; 47675374Sbp for (;;) { 47775374Sbp m_dumpm(mdp->md_top); 47875374Sbp if ((error = md_get_uint8(mdp, &wc)) != 0) 47975374Sbp break; 48075374Sbp if (wc < 10) { 48175374Sbp error = ENOENT; 48275374Sbp break; 48375374Sbp } 48475374Sbp if ((error = md_get_uint16le(mdp, &tmp)) != 0) 48575374Sbp break; 48675374Sbp if (totpcount > tmp) 48775374Sbp totpcount = tmp; 48875374Sbp md_get_uint16le(mdp, &tmp); 48975374Sbp if (totdcount > tmp) 49075374Sbp totdcount = tmp; 49175374Sbp if ((error = md_get_uint16le(mdp, &tmp)) != 0 || /* reserved */ 49275374Sbp (error = md_get_uint16le(mdp, &pcount)) != 0 || 49375374Sbp (error = md_get_uint16le(mdp, &poff)) != 0 || 49475374Sbp (error = md_get_uint16le(mdp, &pdisp)) != 0) 49575374Sbp break; 49675374Sbp if (pcount != 0 && pdisp != totpgot) { 49788741Sbp SMBERROR("Can't handle disordered parameters %d:%d\n", 49875374Sbp pdisp, totpgot); 49975374Sbp error = EINVAL; 50075374Sbp break; 50175374Sbp } 50275374Sbp if ((error = md_get_uint16le(mdp, &dcount)) != 0 || 50375374Sbp (error = md_get_uint16le(mdp, &doff)) != 0 || 50475374Sbp (error = md_get_uint16le(mdp, &ddisp)) != 0) 50575374Sbp break; 50675374Sbp if (dcount != 0 && ddisp != totdgot) { 50788741Sbp SMBERROR("Can't handle disordered data\n"); 50875374Sbp error = EINVAL; 50975374Sbp break; 51075374Sbp } 51175374Sbp md_get_uint8(mdp, &wc); 51275374Sbp md_get_uint8(mdp, NULL); 51375374Sbp tmp = wc; 51475374Sbp while (tmp--) 51575374Sbp md_get_uint16(mdp, NULL); 51675374Sbp if ((error = md_get_uint16le(mdp, &bc)) != 0) 51775374Sbp break; 51875374Sbp/* tmp = SMB_HDRLEN + 1 + 10 * 2 + 2 * wc + 2;*/ 51975374Sbp if (dcount) { 52075374Sbp error = smb_t2_placedata(mdp->md_top, doff, dcount, 52175374Sbp &t2p->t2_rdata); 52275374Sbp if (error) 52375374Sbp break; 52475374Sbp } 52575374Sbp if (pcount) { 52675374Sbp error = smb_t2_placedata(mdp->md_top, poff, pcount, 52775374Sbp &t2p->t2_rparam); 52875374Sbp if (error) 52975374Sbp break; 53075374Sbp } 53175374Sbp totpgot += pcount; 53275374Sbp totdgot += dcount; 53375374Sbp if (totpgot >= totpcount && totdgot >= totdcount) { 53475374Sbp error = 0; 53575374Sbp t2p->t2_flags |= SMBT2_ALLRECV; 53675374Sbp break; 53775374Sbp } 53875374Sbp /* 53975374Sbp * We're done with this reply, look for the next one. 54075374Sbp */ 54175374Sbp SMBRQ_SLOCK(rqp); 54275374Sbp md_next_record(&rqp->sr_rp); 54375374Sbp SMBRQ_SUNLOCK(rqp); 54475374Sbp error = smb_rq_reply(rqp); 54575374Sbp if (error) 54675374Sbp break; 54775374Sbp } 54875374Sbp return error; 54975374Sbp} 55075374Sbp 55175374Sbp/* 55275374Sbp * Perform a full round of TRANS2 request 55375374Sbp */ 55475374Sbpstatic int 55575374Sbpsmb_t2_request_int(struct smb_t2rq *t2p) 55675374Sbp{ 55775374Sbp struct smb_vc *vcp = t2p->t2_vc; 55875374Sbp struct smb_cred *scred = t2p->t2_cred; 55975374Sbp struct mbchain *mbp; 56075374Sbp struct mdchain *mdp, mbparam, mbdata; 56175374Sbp struct mbuf *m; 56275374Sbp struct smb_rq *rqp; 56375374Sbp int totpcount, leftpcount, totdcount, leftdcount, len, txmax, i; 56475374Sbp int error, doff, poff, txdcount, txpcount, nmlen; 56575374Sbp 56675374Sbp m = t2p->t2_tparam.mb_top; 56775374Sbp if (m) { 56875374Sbp md_initm(&mbparam, m); /* do not free it! */ 56975374Sbp totpcount = m_fixhdr(m); 57075374Sbp if (totpcount > 0xffff) /* maxvalue for u_short */ 57175374Sbp return EINVAL; 57275374Sbp } else 57375374Sbp totpcount = 0; 57475374Sbp m = t2p->t2_tdata.mb_top; 57575374Sbp if (m) { 57675374Sbp md_initm(&mbdata, m); /* do not free it! */ 57775374Sbp totdcount = m_fixhdr(m); 57875374Sbp if (totdcount > 0xffff) 57975374Sbp return EINVAL; 58075374Sbp } else 58175374Sbp totdcount = 0; 58275374Sbp leftdcount = totdcount; 58375374Sbp leftpcount = totpcount; 58475374Sbp txmax = vcp->vc_txmax; 58575374Sbp error = smb_rq_alloc(t2p->t2_source, t2p->t_name ? 58675374Sbp SMB_COM_TRANSACTION : SMB_COM_TRANSACTION2, scred, &rqp); 58775374Sbp if (error) 58875374Sbp return error; 58975374Sbp rqp->sr_flags |= SMBR_MULTIPACKET; 59075374Sbp t2p->t2_rq = rqp; 591124087Stjr rqp->sr_t2 = t2p; 59275374Sbp mbp = &rqp->sr_rq; 59375374Sbp smb_rq_wstart(rqp); 59475374Sbp mb_put_uint16le(mbp, totpcount); 59575374Sbp mb_put_uint16le(mbp, totdcount); 59675374Sbp mb_put_uint16le(mbp, t2p->t2_maxpcount); 59775374Sbp mb_put_uint16le(mbp, t2p->t2_maxdcount); 59875374Sbp mb_put_uint8(mbp, t2p->t2_maxscount); 59975374Sbp mb_put_uint8(mbp, 0); /* reserved */ 60075374Sbp mb_put_uint16le(mbp, 0); /* flags */ 60175374Sbp mb_put_uint32le(mbp, 0); /* Timeout */ 60275374Sbp mb_put_uint16le(mbp, 0); /* reserved 2 */ 60375374Sbp len = mb_fixhdr(mbp); 60475374Sbp /* 60575374Sbp * now we have known packet size as 60675374Sbp * ALIGN4(len + 5 * 2 + setupcount * 2 + 2 + strlen(name) + 1), 60775374Sbp * and need to decide which parts should go into the first request 60875374Sbp */ 60975374Sbp nmlen = t2p->t_name ? strlen(t2p->t_name) : 0; 61075374Sbp len = ALIGN4(len + 5 * 2 + t2p->t2_setupcount * 2 + 2 + nmlen + 1); 61175374Sbp if (len + leftpcount > txmax) { 61275374Sbp txpcount = min(leftpcount, txmax - len); 61375374Sbp poff = len; 61475374Sbp txdcount = 0; 61575374Sbp doff = 0; 61675374Sbp } else { 61775374Sbp txpcount = leftpcount; 61875374Sbp poff = txpcount ? len : 0; 61975374Sbp len = ALIGN4(len + txpcount); 62075374Sbp txdcount = min(leftdcount, txmax - len); 62175374Sbp doff = txdcount ? len : 0; 62275374Sbp } 62375374Sbp leftpcount -= txpcount; 62475374Sbp leftdcount -= txdcount; 62575374Sbp mb_put_uint16le(mbp, txpcount); 62675374Sbp mb_put_uint16le(mbp, poff); 62775374Sbp mb_put_uint16le(mbp, txdcount); 62875374Sbp mb_put_uint16le(mbp, doff); 62975374Sbp mb_put_uint8(mbp, t2p->t2_setupcount); 63075374Sbp mb_put_uint8(mbp, 0); 63175374Sbp for (i = 0; i < t2p->t2_setupcount; i++) 63275374Sbp mb_put_uint16le(mbp, t2p->t2_setupdata[i]); 63375374Sbp smb_rq_wend(rqp); 63475374Sbp smb_rq_bstart(rqp); 63575374Sbp /* TDUNICODE */ 63675374Sbp if (t2p->t_name) 63775374Sbp mb_put_mem(mbp, t2p->t_name, nmlen, MB_MSYSTEM); 63875374Sbp mb_put_uint8(mbp, 0); /* terminating zero */ 63975374Sbp len = mb_fixhdr(mbp); 64075374Sbp if (txpcount) { 64175374Sbp mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 64275374Sbp error = md_get_mbuf(&mbparam, txpcount, &m); 64375374Sbp SMBSDEBUG("%d:%d:%d\n", error, txpcount, txmax); 64475374Sbp if (error) 64575374Sbp goto freerq; 64675374Sbp mb_put_mbuf(mbp, m); 64775374Sbp } 64875374Sbp len = mb_fixhdr(mbp); 64975374Sbp if (txdcount) { 65075374Sbp mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 65175374Sbp error = md_get_mbuf(&mbdata, txdcount, &m); 65275374Sbp if (error) 65375374Sbp goto freerq; 65475374Sbp mb_put_mbuf(mbp, m); 65575374Sbp } 65675374Sbp smb_rq_bend(rqp); /* incredible, but thats it... */ 65775374Sbp error = smb_rq_enqueue(rqp); 65875374Sbp if (error) 65975374Sbp goto freerq; 66075374Sbp if (leftpcount == 0 && leftdcount == 0) 66175374Sbp t2p->t2_flags |= SMBT2_ALLSENT; 66275374Sbp error = smb_t2_reply(t2p); 66375374Sbp if (error) 66475374Sbp goto bad; 66575374Sbp while (leftpcount || leftdcount) { 666124087Stjr t2p->t2_flags |= SMBT2_SECONDARY; 66775374Sbp error = smb_rq_new(rqp, t2p->t_name ? 66875374Sbp SMB_COM_TRANSACTION_SECONDARY : SMB_COM_TRANSACTION2_SECONDARY); 66975374Sbp if (error) 67075374Sbp goto bad; 67175374Sbp mbp = &rqp->sr_rq; 67275374Sbp smb_rq_wstart(rqp); 67375374Sbp mb_put_uint16le(mbp, totpcount); 67475374Sbp mb_put_uint16le(mbp, totdcount); 67575374Sbp len = mb_fixhdr(mbp); 67675374Sbp /* 67775374Sbp * now we have known packet size as 67875374Sbp * ALIGN4(len + 7 * 2 + 2) for T2 request, and -2 for T one, 67975374Sbp * and need to decide which parts should go into request 68075374Sbp */ 68175374Sbp len = ALIGN4(len + 6 * 2 + 2); 68275374Sbp if (t2p->t_name == NULL) 68375374Sbp len += 2; 68475374Sbp if (len + leftpcount > txmax) { 68575374Sbp txpcount = min(leftpcount, txmax - len); 68675374Sbp poff = len; 68775374Sbp txdcount = 0; 68875374Sbp doff = 0; 68975374Sbp } else { 69075374Sbp txpcount = leftpcount; 69175374Sbp poff = txpcount ? len : 0; 69275374Sbp len = ALIGN4(len + txpcount); 69375374Sbp txdcount = min(leftdcount, txmax - len); 69475374Sbp doff = txdcount ? len : 0; 69575374Sbp } 69675374Sbp mb_put_uint16le(mbp, txpcount); 69775374Sbp mb_put_uint16le(mbp, poff); 69875374Sbp mb_put_uint16le(mbp, totpcount - leftpcount); 69975374Sbp mb_put_uint16le(mbp, txdcount); 70075374Sbp mb_put_uint16le(mbp, doff); 70175374Sbp mb_put_uint16le(mbp, totdcount - leftdcount); 70275374Sbp leftpcount -= txpcount; 70375374Sbp leftdcount -= txdcount; 70475374Sbp if (t2p->t_name == NULL) 70575374Sbp mb_put_uint16le(mbp, t2p->t2_fid); 70675374Sbp smb_rq_wend(rqp); 70775374Sbp smb_rq_bstart(rqp); 70875374Sbp mb_put_uint8(mbp, 0); /* name */ 70975374Sbp len = mb_fixhdr(mbp); 71075374Sbp if (txpcount) { 71175374Sbp mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 71275374Sbp error = md_get_mbuf(&mbparam, txpcount, &m); 71375374Sbp if (error) 71475374Sbp goto bad; 71575374Sbp mb_put_mbuf(mbp, m); 71675374Sbp } 71775374Sbp len = mb_fixhdr(mbp); 71875374Sbp if (txdcount) { 71975374Sbp mb_put_mem(mbp, NULL, ALIGN4(len) - len, MB_MZERO); 72075374Sbp error = md_get_mbuf(&mbdata, txdcount, &m); 72175374Sbp if (error) 72275374Sbp goto bad; 72375374Sbp mb_put_mbuf(mbp, m); 72475374Sbp } 72575374Sbp smb_rq_bend(rqp); 72675374Sbp rqp->sr_state = SMBRQ_NOTSENT; 72775374Sbp error = smb_iod_request(vcp->vc_iod, SMBIOD_EV_NEWRQ, NULL); 72875374Sbp if (error) 72975374Sbp goto bad; 73075374Sbp } /* while left params or data */ 73175374Sbp t2p->t2_flags |= SMBT2_ALLSENT; 73275374Sbp mdp = &t2p->t2_rdata; 73375374Sbp if (mdp->md_top) { 73475374Sbp m_fixhdr(mdp->md_top); 73575374Sbp md_initm(mdp, mdp->md_top); 73675374Sbp } 73775374Sbp mdp = &t2p->t2_rparam; 73875374Sbp if (mdp->md_top) { 73975374Sbp m_fixhdr(mdp->md_top); 74075374Sbp md_initm(mdp, mdp->md_top); 74175374Sbp } 74275374Sbpbad: 74375374Sbp smb_iod_removerq(rqp); 74475374Sbpfreerq: 74575374Sbp smb_rq_done(rqp); 74675374Sbp if (error) { 74775374Sbp if (rqp->sr_flags & SMBR_RESTART) 74875374Sbp t2p->t2_flags |= SMBT2_RESTART; 74975374Sbp md_done(&t2p->t2_rparam); 75075374Sbp md_done(&t2p->t2_rdata); 75175374Sbp } 75275374Sbp return error; 75375374Sbp} 75475374Sbp 75575374Sbpint 75675374Sbpsmb_t2_request(struct smb_t2rq *t2p) 75775374Sbp{ 75875374Sbp int error = EINVAL, i; 75975374Sbp 76075374Sbp for (i = 0; i < SMB_MAXRCN; i++) { 76175374Sbp t2p->t2_flags &= ~SMBR_RESTART; 76275374Sbp error = smb_t2_request_int(t2p); 76375374Sbp if (error == 0) 76475374Sbp break; 76575374Sbp if ((t2p->t2_flags & (SMBT2_RESTART | SMBT2_NORESTART)) != SMBT2_RESTART) 76675374Sbp break; 76775374Sbp } 76875374Sbp return error; 76975374Sbp} 770