xref: /freebsd/sys/fs/smbfs/smbfs_subr.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *    This product includes software developed by Boris Popov.
16  * 4. Neither the name of the author nor the names of any co-contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * $FreeBSD$
33  */
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/clock.h>
38 #include <sys/malloc.h>
39 #include <sys/time.h>
40 #include <sys/vnode.h>
41 #include <sys/sysctl.h>
42 #include <sys/iconv.h>
43 
44 #include <netsmb/smb.h>
45 #include <netsmb/smb_conn.h>
46 #include <netsmb/smb_subr.h>
47 #include <netsmb/smb_rq.h>
48 #include <netsmb/smb_dev.h>
49 
50 #include <fs/smbfs/smbfs.h>
51 #include <fs/smbfs/smbfs_node.h>
52 #include <fs/smbfs/smbfs_subr.h>
53 
54 MALLOC_DEFINE(M_SMBFSDATA, "smbfs_data", "SMBFS private data");
55 
56 void
57 smb_time_local2server(struct timespec *tsp, int tzoff, u_long *seconds)
58 {
59 	*seconds = tsp->tv_sec - tzoff * 60 /*- tz_minuteswest * 60 -
60 	    (wall_cmos_clock ? adjkerntz : 0)*/;
61 }
62 
63 void
64 smb_time_server2local(u_long seconds, int tzoff, struct timespec *tsp)
65 {
66 	tsp->tv_sec = seconds + tzoff * 60;
67 	    /*+ tz_minuteswest * 60 + (wall_cmos_clock ? adjkerntz : 0)*/;
68 }
69 
70 /*
71  * Number of seconds between 1970 and 1601 year
72  */
73 static int64_t DIFF1970TO1601 = 11644473600ULL;
74 
75 /*
76  * Time from server comes as UTC, so no need to use tz
77  */
78 void
79 smb_time_NT2local(int64_t nsec, int tzoff, struct timespec *tsp)
80 {
81 	smb_time_server2local(nsec / 10000000 - DIFF1970TO1601, 0, tsp);
82 }
83 
84 void
85 smb_time_local2NT(struct timespec *tsp, int tzoff, int64_t *nsec)
86 {
87 	u_long seconds;
88 
89 	smb_time_local2server(tsp, 0, &seconds);
90 	*nsec = (((int64_t)(seconds) & ~1) + DIFF1970TO1601) * (int64_t)10000000;
91 }
92 
93 void
94 smb_time_unix2dos(struct timespec *tsp, int tzoff, u_int16_t *ddp,
95 	u_int16_t *dtp,	u_int8_t *dhp)
96 {
97 	struct timespec tt;
98 	u_long t;
99 
100 	tt = *tsp;
101 	smb_time_local2server(tsp, tzoff, &t);
102 	tt.tv_sec = t;
103 	timespec2fattime(&tt, 1, ddp, dtp, dhp);
104 }
105 
106 void
107 smb_dos2unixtime(u_int dd, u_int dt, u_int dh, int tzoff,
108 	struct timespec *tsp)
109 {
110 
111 	fattime2timespec(dd, dt, dh, 1, tsp);
112 	smb_time_server2local(tsp->tv_sec, tzoff, tsp);
113 }
114 
115 static int
116 smb_fphelp(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *np,
117 	int caseopt)
118 {
119 	struct smbmount *smp= np->n_mount;
120 	struct smbnode **npp = smp->sm_npstack;
121 	int i, error = 0;
122 
123 /*	simple_lock(&smp->sm_npslock);*/
124 	i = 0;
125 	while (np->n_parent) {
126 		if (i++ == SMBFS_MAXPATHCOMP) {
127 /*			simple_unlock(&smp->sm_npslock);*/
128 			return ENAMETOOLONG;
129 		}
130 		*npp++ = np;
131 		if ((np->n_flag & NREFPARENT) == 0)
132 			break;
133 		np = VTOSMB(np->n_parent);
134 	}
135 /*	if (i == 0)
136 		return smb_put_dmem(mbp, vcp, "\\", 2, caseopt);*/
137 	while (i--) {
138 		np = *--npp;
139 		error = mb_put_uint8(mbp, '\\');
140 		if (error)
141 			break;
142 		error = smb_put_dmem(mbp, vcp, np->n_name, np->n_nmlen, caseopt);
143 		if (error)
144 			break;
145 	}
146 /*	simple_unlock(&smp->sm_npslock);*/
147 	return error;
148 }
149 
150 int
151 smbfs_fullpath(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *dnp,
152 	const char *name, int nmlen)
153 {
154 	int caseopt = SMB_CS_NONE;
155 	int error;
156 
157 	if (SMB_DIALECT(vcp) < SMB_DIALECT_LANMAN1_0)
158 		caseopt |= SMB_CS_UPPER;
159 	if (dnp != NULL) {
160 		error = smb_fphelp(mbp, vcp, dnp, caseopt);
161 		if (error)
162 			return error;
163 	}
164 	if (name) {
165 		error = mb_put_uint8(mbp, '\\');
166 		if (error)
167 			return error;
168 		error = smb_put_dmem(mbp, vcp, name, nmlen, caseopt);
169 		if (error)
170 			return error;
171 	}
172 	error = mb_put_uint8(mbp, 0);
173 	return error;
174 }
175 
176 int
177 smbfs_fname_tolocal(struct smb_vc *vcp, char *name, int *nmlen, int caseopt)
178 {
179 	int copt = (caseopt == SMB_CS_LOWER ? KICONV_FROM_LOWER :
180 		    (caseopt == SMB_CS_UPPER ? KICONV_FROM_UPPER : 0));
181 	int error = 0;
182 	size_t ilen = *nmlen;
183 	size_t olen;
184 	char *ibuf = name;
185 	char outbuf[SMB_MAXFNAMELEN];
186 	char *obuf = outbuf;
187 
188 	if (vcp->vc_tolocal) {
189 		olen = sizeof(outbuf);
190 		bzero(outbuf, sizeof(outbuf));
191 
192 		/*
193 		error = iconv_conv_case
194 			(vcp->vc_tolocal, NULL, NULL, &obuf, &olen, copt);
195 		if (error) return error;
196 		*/
197 
198 		error = iconv_conv_case
199 			(vcp->vc_tolocal, (const char **)&ibuf, &ilen, &obuf, &olen, copt);
200 		if (!error) {
201 			*nmlen = sizeof(outbuf) - olen;
202 			memcpy(name, outbuf, *nmlen);
203 		}
204 	}
205 	return error;
206 }
207