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