Import kernel part of SMB/CIFS requester.

Add smbfs(CIFS) filesystem.

Userland part will be in the ports tree for a while.

Obtained from:	smbfs-1.3.7-dev package.

1 files changed, 355 insertions, 0 deletions

diff --git a/sys/netsmb/smb_usr.c b/sys/netsmb/smb_usr.c
new file mode 100644
index 0000000..2759173
--- /dev/null
+++ b/sys/netsmb/smb_usr.c
@@ -0,0 +1,355 @@
+/*
+ * Copyright (c) 2000-2001 Boris Popov
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    This product includes software developed by Boris Popov.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#include <sys/param.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/proc.h>
+#include <sys/fcntl.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/sysctl.h>
+
+#include <sys/iconv.h>
+
+#include <netsmb/smb.h>
+#include <netsmb/smb_conn.h>
+#include <netsmb/smb_rq.h>
+#include <netsmb/smb_subr.h>
+#include <netsmb/smb_dev.h>
+
+/*
+ * helpers for nsmb device. Can be moved to the smb_dev.c file.
+ */
+static void smb_usr_vcspec_free(struct smb_vcspec *spec);
+
+static int
+smb_usr_vc2spec(struct smbioc_ossn *dp, struct smb_vcspec *spec)
+{
+	int flags = 0;
+
+	bzero(spec, sizeof(*spec));
+	if (dp->ioc_user[0] == 0)
+		return EINVAL;
+	if (dp->ioc_server == NULL)
+		return EINVAL;
+	if (dp->ioc_localcs[0] == 0) {
+		SMBERROR("no local charset ?\n");
+		return EINVAL;
+	}
+
+	spec->sap = smb_memdupin(dp->ioc_server, dp->ioc_svlen);
+	if (spec->sap == NULL)
+		return ENOMEM;
+	if (dp->ioc_local) {
+		spec->lap = smb_memdupin(dp->ioc_local, dp->ioc_lolen);
+		if (spec->lap == NULL) {
+			smb_usr_vcspec_free(spec);
+			return ENOMEM;
+		}
+	}
+	spec->srvname = dp->ioc_srvname;
+	spec->pass = dp->ioc_password;
+	spec->domain = dp->ioc_workgroup;
+	spec->username = dp->ioc_user;
+	spec->mode = dp->ioc_mode;
+	spec->rights = dp->ioc_rights;
+	spec->owner = dp->ioc_owner;
+	spec->group = dp->ioc_group;
+	spec->localcs = dp->ioc_localcs;
+	spec->servercs = dp->ioc_servercs;
+	if (dp->ioc_opt & SMBVOPT_PRIVATE)
+		flags |= SMBV_PRIVATE;
+	if (dp->ioc_opt & SMBVOPT_SINGLESHARE)
+		flags |= SMBV_PRIVATE | SMBV_SINGLESHARE;
+	spec->flags = flags;
+	return 0;
+}
+
+static void
+smb_usr_vcspec_free(struct smb_vcspec *spec)
+{
+	if (spec->sap)
+		smb_memfree(spec->sap);
+	if (spec->lap)
+		smb_memfree(spec->lap);
+}
+
+static int
+smb_usr_share2spec(struct smbioc_oshare *dp, struct smb_sharespec *spec)
+{
+	bzero(spec, sizeof(*spec));
+	spec->mode = dp->ioc_mode;
+	spec->rights = dp->ioc_rights;
+	spec->owner = dp->ioc_owner;
+	spec->group = dp->ioc_group;
+	spec->name = dp->ioc_share;
+	spec->stype = dp->ioc_stype;
+	spec->pass = dp->ioc_password;
+	return 0;
+}
+
+int
+smb_usr_lookup(struct smbioc_lookup *dp, struct smb_cred *scred,
+	struct smb_vc **vcpp, struct smb_share **sspp)
+{
+	struct smb_vc *vcp = NULL;
+	struct smb_vcspec vspec;
+	struct smb_sharespec sspec, *sspecp = NULL;
+	int error;
+
+	if (dp->ioc_level < SMBL_VC || dp->ioc_level > SMBL_SHARE)
+		return EINVAL;
+	error = smb_usr_vc2spec(&dp->ioc_ssn, &vspec);
+	if (error)
+		return error;
+	if (dp->ioc_flags & SMBLK_CREATE)
+		vspec.flags |= SMBV_CREATE;
+
+	if (dp->ioc_level >= SMBL_SHARE) {
+		error = smb_usr_share2spec(&dp->ioc_sh, &sspec);
+		if (error)
+			goto out;
+		sspecp = &sspec;
+	}
+	error = smb_sm_lookup(&vspec, sspecp, scred, &vcp);
+	if (error == 0) {
+		*vcpp = vcp;
+		*sspp = vspec.ssp;
+	}
+out:
+	smb_usr_vcspec_free(&vspec);
+	return error;
+}
+
+/*
+ * Connect to the resource specified by smbioc_ossn structure.
+ * It may either find an existing connection or try to establish a new one.
+ * If no errors occured smb_vc returned locked and referenced.
+ */
+int
+smb_usr_opensession(struct smbioc_ossn *dp, struct smb_cred *scred,
+	struct smb_vc **vcpp)
+{
+	struct smb_vc *vcp = NULL;
+	struct smb_vcspec vspec;
+	int error;
+
+	error = smb_usr_vc2spec(dp, &vspec);
+	if (error)
+		return error;
+	if (dp->ioc_opt & SMBVOPT_CREATE)
+		vspec.flags |= SMBV_CREATE;
+
+	error = smb_sm_lookup(&vspec, NULL, scred, &vcp);
+	smb_usr_vcspec_free(&vspec);
+	return error;
+}
+
+int
+smb_usr_openshare(struct smb_vc *vcp, struct smbioc_oshare *dp,
+	struct smb_cred *scred, struct smb_share **sspp)
+{
+	struct smb_share *ssp;
+	struct smb_sharespec shspec;
+	int error;
+
+	error = smb_usr_share2spec(dp, &shspec);
+	if (error)
+		return error;
+	error = smb_vc_lookupshare(vcp, &shspec, scred, &ssp);
+	if (error == 0) {
+		*sspp = ssp;
+		return 0;
+	}
+	if ((dp->ioc_opt & SMBSOPT_CREATE) == 0)
+		return error;
+	error = smb_share_create(vcp, &shspec, scred, &ssp);
+	if (error)
+		return error;
+	error = smb_smb_treeconnect(ssp, scred);
+	if (error) {
+		smb_share_put(ssp, scred);
+	} else
+		*sspp = ssp;
+	return error;
+}
+
+int
+smb_usr_simplerequest(struct smb_share *ssp, struct smbioc_rq *dp,
+	struct smb_cred *scred)
+{
+	struct smb_rq rq, *rqp = &rq;
+	struct mbchain *mbp;
+	struct mdchain *mdp;
+	u_int8_t wc;
+	u_int16_t bc;
+	int error;
+
+	switch (dp->ioc_cmd) {
+	    case SMB_COM_TRANSACTION2:
+	    case SMB_COM_TRANSACTION2_SECONDARY:
+	    case SMB_COM_CLOSE_AND_TREE_DISC:
+	    case SMB_COM_TREE_CONNECT:
+	    case SMB_COM_TREE_DISCONNECT:
+	    case SMB_COM_NEGOTIATE:
+	    case SMB_COM_SESSION_SETUP_ANDX:
+	    case SMB_COM_LOGOFF_ANDX:
+	    case SMB_COM_TREE_CONNECT_ANDX:
+		return EPERM;
+	}
+	error = smb_rq_init(rqp, SSTOCP(ssp), dp->ioc_cmd, scred);
+	if (error)
+		return error;
+	mbp = &rqp->sr_rq;
+	smb_rq_wstart(rqp);
+	error = mb_put_mem(mbp, dp->ioc_twords, dp->ioc_twc * 2, MB_MUSER);
+	if (error)
+		goto bad;
+	smb_rq_wend(rqp);
+	smb_rq_bstart(rqp);
+	error = mb_put_mem(mbp, dp->ioc_tbytes, dp->ioc_tbc, MB_MUSER);
+	if (error)
+		goto bad;
+	smb_rq_bend(rqp);
+	error = smb_rq_simple(rqp);
+	if (error)
+		goto bad;
+	mdp = &rqp->sr_rp;
+	md_get_uint8(mdp, &wc);
+	dp->ioc_rwc = wc;
+	wc *= 2;
+	if (wc > dp->ioc_rpbufsz) {
+		error = EBADRPC;
+		goto bad;
+	}
+	error = md_get_mem(mdp, dp->ioc_rpbuf, wc, MB_MUSER);
+	if (error)
+		goto bad;
+	md_get_uint16le(mdp, &bc);
+	if ((wc + bc) > dp->ioc_rpbufsz) {
+		error = EBADRPC;
+		goto bad;
+	}
+	dp->ioc_rbc = bc;
+	error = md_get_mem(mdp, dp->ioc_rpbuf + wc, bc, MB_MUSER);
+bad:
+	dp->ioc_errclass = rqp->sr_errclass;
+	dp->ioc_serror = rqp->sr_serror;
+	dp->ioc_error = rqp->sr_error;
+	smb_rq_done(rqp);
+	return error;
+
+}
+
+static int
+smb_cpdatain(struct mbchain *mbp, int len, caddr_t data)
+{
+	int error;
+
+	if (len == 0)
+		return 0;
+	error = mb_init(mbp);
+	if (error)
+		return error;
+	return mb_put_mem(mbp, data, len, MB_MUSER);
+}
+
+int
+smb_usr_t2request(struct smb_share *ssp, struct smbioc_t2rq *dp,
+	struct smb_cred *scred)
+{
+	struct smb_t2rq t2, *t2p = &t2;
+	struct mdchain *mdp;
+	int error, len;
+
+	if (dp->ioc_tparamcnt > 0xffff || dp->ioc_tdatacnt > 0xffff ||
+	    dp->ioc_setupcnt > 3)
+		return EINVAL;
+	error = smb_t2_init(t2p, SSTOCP(ssp), dp->ioc_setup[0], scred);
+	if (error)
+		return error;
+	len = t2p->t2_setupcount = dp->ioc_setupcnt;
+	if (len > 1)
+		t2p->t2_setupdata = dp->ioc_setup; 
+	if (dp->ioc_name) {
+		t2p->t_name = smb_strdupin(dp->ioc_name, 128);
+		if (t2p->t_name == NULL) {
+			error = ENOMEM;
+			goto bad;
+		}
+	}
+	t2p->t2_maxscount = 0;
+	t2p->t2_maxpcount = dp->ioc_rparamcnt;
+	t2p->t2_maxdcount = dp->ioc_rdatacnt;
+	error = smb_cpdatain(&t2p->t2_tparam, dp->ioc_tparamcnt, dp->ioc_tparam);
+	if (error)
+		goto bad;
+	error = smb_cpdatain(&t2p->t2_tdata, dp->ioc_tdatacnt, dp->ioc_tdata);
+	if (error)
+		goto bad;
+	error = smb_t2_request(t2p);
+	if (error)
+		goto bad;
+	mdp = &t2p->t2_rparam;
+	if (mdp->md_top) {
+		len = m_fixhdr(mdp->md_top);
+		if (len > dp->ioc_rparamcnt) {
+			error = EMSGSIZE;
+			goto bad;
+		}
+		dp->ioc_rparamcnt = len;
+		error = md_get_mem(mdp, dp->ioc_rparam, len, MB_MUSER);
+		if (error)
+			goto bad;
+	} else
+		dp->ioc_rparamcnt = 0;
+	mdp = &t2p->t2_rdata;
+	if (mdp->md_top) {
+		len = m_fixhdr(mdp->md_top);
+		if (len > dp->ioc_rdatacnt) {
+			error = EMSGSIZE;
+			goto bad;
+		}
+		dp->ioc_rdatacnt = len;
+		error = md_get_mem(mdp, dp->ioc_rdata, len, MB_MUSER);
+	} else
+		dp->ioc_rdatacnt = 0;
+bad:
+	if (t2p->t_name)
+		smb_strfree(t2p->t_name);
+	smb_t2_done(t2p);
+	return error;
+}