1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
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#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");
49MALLOC_DEFINE(M_SMBFSCRED, "smbfs_cred", "SMBFS cred data");
50
51void
52smb_time_local2server(struct timespec *tsp, int tzoff, u_long *seconds)
53{
54	*seconds = tsp->tv_sec - tzoff * 60 /*- tz_minuteswest * 60 -
55	    (wall_cmos_clock ? adjkerntz : 0)*/;
56}
57
58void
59smb_time_server2local(u_long seconds, int tzoff, struct timespec *tsp)
60{
61	tsp->tv_sec = seconds + tzoff * 60;
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
109int
110smbfs_fullpath(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *dnp,
111	const char *name, int nmlen)
112{
113	int caseopt = SMB_CS_NONE;
114	int error;
115
116	if (SMB_UNICODE_STRINGS(vcp)) {
117		error = mb_put_padbyte(mbp);
118		if (error)
119			return error;
120	}
121	if (SMB_DIALECT(vcp) < SMB_DIALECT_LANMAN1_0)
122		caseopt |= SMB_CS_UPPER;
123	if (dnp != NULL) {
124		error = smb_put_dmem(mbp, vcp, dnp->n_rpath, dnp->n_rplen,
125		    caseopt);
126		if (error)
127			return error;
128		if (name) {
129			/* Put the separator */
130			if (SMB_UNICODE_STRINGS(vcp))
131				error = mb_put_uint16le(mbp, '\\');
132			else
133				error = mb_put_uint8(mbp, '\\');
134			if (error)
135				return error;
136			/* Put the name */
137			error = smb_put_dmem(mbp, vcp, name, nmlen, caseopt);
138			if (error)
139				return error;
140		}
141	}
142	/* Put NULL terminator. */
143	if (SMB_UNICODE_STRINGS(vcp))
144		error = mb_put_uint16le(mbp, 0);
145	else
146		error = mb_put_uint8(mbp, 0);
147	return error;
148}
149
150int
151smbfs_fname_tolocal(struct smb_vc *vcp, char *name, int *nmlen, int caseopt)
152{
153	int copt = (caseopt == SMB_CS_LOWER ? KICONV_FROM_LOWER :
154		    (caseopt == SMB_CS_UPPER ? KICONV_FROM_UPPER : 0));
155	int error = 0;
156	size_t ilen = *nmlen;
157	size_t olen;
158	char *ibuf = name;
159	char outbuf[SMB_MAXFNAMELEN];
160	char *obuf = outbuf;
161
162	if (vcp->vc_tolocal) {
163		olen = sizeof(outbuf);
164		bzero(outbuf, sizeof(outbuf));
165
166		/*
167		error = iconv_conv_case
168			(vcp->vc_tolocal, NULL, NULL, &obuf, &olen, copt);
169		if (error) return error;
170		*/
171
172		error = iconv_conv_case(vcp->vc_tolocal,
173		    __DECONST(const char **, &ibuf), &ilen, &obuf, &olen, copt);
174		if (error && SMB_UNICODE_STRINGS(vcp)) {
175			/*
176			 * If using unicode, leaving a file name as it was when
177			 * convert fails will cause a problem because the file name
178			 * will contain NULL.
179			 * Here, put '?' and give converted file name.
180			 */
181			*obuf = '?';
182			olen--;
183			error = 0;
184		}
185		if (!error) {
186			*nmlen = sizeof(outbuf) - olen;
187			memcpy(name, outbuf, *nmlen);
188		}
189	}
190	return error;
191}
192
193void *
194smbfs_malloc_scred(void)
195{
196	return (malloc(sizeof(struct smb_cred), M_SMBFSCRED, M_WAITOK));
197}
198
199void
200smbfs_free_scred(void *scred)
201{
202	free(scred, M_SMBFSCRED);
203}
204