1/*-
2 * Copyright (c) 2000-2001 Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28#include <sys/param.h>
29#include <sys/systm.h>
30#include <sys/kernel.h>
31#include <sys/clock.h>
32#include <sys/malloc.h>
33#include <sys/time.h>
34#include <sys/vnode.h>
35#include <sys/sysctl.h>
36#include <sys/iconv.h>
37
38#include <netsmb/smb.h>
39#include <netsmb/smb_conn.h>
40#include <netsmb/smb_subr.h>
41#include <netsmb/smb_rq.h>
42#include <netsmb/smb_dev.h>
43
44#include <fs/smbfs/smbfs.h>
45#include <fs/smbfs/smbfs_node.h>
46#include <fs/smbfs/smbfs_subr.h>
47
48MALLOC_DEFINE(M_SMBFSDATA, "smbfs_data", "SMBFS private data");
49
50void
51smb_time_local2server(struct timespec *tsp, int tzoff, u_long *seconds)
52{
53	*seconds = tsp->tv_sec - tzoff * 60 /*- tz_minuteswest * 60 -
54	    (wall_cmos_clock ? adjkerntz : 0)*/;
55}
56
57void
58smb_time_server2local(u_long seconds, int tzoff, struct timespec *tsp)
59{
60	tsp->tv_sec = seconds + tzoff * 60;
61	    /*+ tz_minuteswest * 60 + (wall_cmos_clock ? adjkerntz : 0)*/;
62}
63
64/*
65 * Number of seconds between 1970 and 1601 year
66 */
67static int64_t DIFF1970TO1601 = 11644473600ULL;
68
69/*
70 * Time from server comes as UTC, so no need to use tz
71 */
72void
73smb_time_NT2local(int64_t nsec, int tzoff, struct timespec *tsp)
74{
75	smb_time_server2local(nsec / 10000000 - DIFF1970TO1601, 0, tsp);
76}
77
78void
79smb_time_local2NT(struct timespec *tsp, int tzoff, int64_t *nsec)
80{
81	u_long seconds;
82
83	smb_time_local2server(tsp, 0, &seconds);
84	*nsec = (((int64_t)(seconds) & ~1) + DIFF1970TO1601) * (int64_t)10000000;
85}
86
87void
88smb_time_unix2dos(struct timespec *tsp, int tzoff, u_int16_t *ddp,
89	u_int16_t *dtp,	u_int8_t *dhp)
90{
91	struct timespec tt;
92	u_long t;
93
94	tt = *tsp;
95	smb_time_local2server(tsp, tzoff, &t);
96	tt.tv_sec = t;
97	timespec2fattime(&tt, 1, ddp, dtp, dhp);
98}
99
100void
101smb_dos2unixtime(u_int dd, u_int dt, u_int dh, int tzoff,
102	struct timespec *tsp)
103{
104
105	fattime2timespec(dd, dt, dh, 1, tsp);
106	smb_time_server2local(tsp->tv_sec, tzoff, tsp);
107}
108
109static int
110smb_fphelp(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *np,
111	int caseopt)
112{
113	struct smbmount *smp= np->n_mount;
114	struct smbnode **npp = smp->sm_npstack;
115	int i, error = 0;
116
117/*	simple_lock(&smp->sm_npslock);*/
118	i = 0;
119	while (np->n_parent) {
120		if (i++ == SMBFS_MAXPATHCOMP) {
121/*			simple_unlock(&smp->sm_npslock);*/
122			return ENAMETOOLONG;
123		}
124		*npp++ = np;
125		if ((np->n_flag & NREFPARENT) == 0)
126			break;
127		np = VTOSMB(np->n_parent);
128	}
129/*	if (i == 0)
130		return smb_put_dmem(mbp, vcp, "\\", 2, caseopt);*/
131	while (i--) {
132		np = *--npp;
133		if (SMB_UNICODE_STRINGS(vcp))
134			error = mb_put_uint16le(mbp, '\\');
135		else
136			error = mb_put_uint8(mbp, '\\');
137		if (error)
138			break;
139		error = smb_put_dmem(mbp, vcp, np->n_name, np->n_nmlen, caseopt);
140		if (error)
141			break;
142	}
143/*	simple_unlock(&smp->sm_npslock);*/
144	return error;
145}
146
147int
148smbfs_fullpath(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *dnp,
149	const char *name, int nmlen)
150{
151	int caseopt = SMB_CS_NONE;
152	int error;
153
154	if (SMB_UNICODE_STRINGS(vcp)) {
155		error = mb_put_padbyte(mbp);
156		if (error)
157			return error;
158	}
159	if (SMB_DIALECT(vcp) < SMB_DIALECT_LANMAN1_0)
160		caseopt |= SMB_CS_UPPER;
161	if (dnp != NULL) {
162		error = smb_fphelp(mbp, vcp, dnp, caseopt);
163		if (error)
164			return error;
165	}
166	if (name) {
167		if (SMB_UNICODE_STRINGS(vcp))
168			error = mb_put_uint16le(mbp, '\\');
169		else
170			error = mb_put_uint8(mbp, '\\');
171		if (error)
172			return error;
173		error = smb_put_dmem(mbp, vcp, name, nmlen, caseopt);
174		if (error)
175			return error;
176	}
177	error = mb_put_uint8(mbp, 0);
178	if (SMB_UNICODE_STRINGS(vcp) && error == 0)
179		error = mb_put_uint8(mbp, 0);
180	return error;
181}
182
183int
184smbfs_fname_tolocal(struct smb_vc *vcp, char *name, int *nmlen, int caseopt)
185{
186	int copt = (caseopt == SMB_CS_LOWER ? KICONV_FROM_LOWER :
187		    (caseopt == SMB_CS_UPPER ? KICONV_FROM_UPPER : 0));
188	int error = 0;
189	size_t ilen = *nmlen;
190	size_t olen;
191	char *ibuf = name;
192	char outbuf[SMB_MAXFNAMELEN];
193	char *obuf = outbuf;
194
195	if (vcp->vc_tolocal) {
196		olen = sizeof(outbuf);
197		bzero(outbuf, sizeof(outbuf));
198
199		/*
200		error = iconv_conv_case
201			(vcp->vc_tolocal, NULL, NULL, &obuf, &olen, copt);
202		if (error) return error;
203		*/
204
205		error = iconv_conv_case
206			(vcp->vc_tolocal, (const char **)&ibuf, &ilen, &obuf, &olen, copt);
207		if (error && SMB_UNICODE_STRINGS(vcp)) {
208			/*
209			 * If using unicode, leaving a file name as it was when
210			 * convert fails will cause a problem because the file name
211			 * will contain NULL.
212			 * Here, put '?' and give converted file name.
213			 */
214			*obuf = '?';
215			olen--;
216			error = 0;
217		}
218		if (!error) {
219			*nmlen = sizeof(outbuf) - olen;
220			memcpy(name, outbuf, *nmlen);
221		}
222	}
223	return error;
224}
225