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
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include <sys/param.h>
33 #include <sys/kernel.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
36 #include <sys/iconv.h>
37
38 #include "iconv_converter_if.h"
39
40 /*
41 * "XLAT" converter
42 */
43
44 #ifdef MODULE_DEPEND
45 MODULE_DEPEND(iconv_xlat, libiconv, 2, 2, 2);
46 #endif
47
48 /*
49 * XLAT converter instance
50 */
51 struct iconv_xlat {
52 KOBJ_FIELDS;
53 u_char * d_table;
54 struct iconv_cspair * d_csp;
55 };
56
57 static int
58 iconv_xlat_open(struct iconv_converter_class *dcp,
59 struct iconv_cspair *csp, struct iconv_cspair *cspf, void **dpp)
60 {
61 struct iconv_xlat *dp;
62
63 dp = (struct iconv_xlat *)kobj_create((struct kobj_class*)dcp, M_ICONV, M_WAITOK);
64 dp->d_table = csp->cp_data;
65 dp->d_csp = csp;
66 csp->cp_refcount++;
67 *dpp = (void*)dp;
68 return 0;
69 }
70
71 static int
72 iconv_xlat_close(void *data)
73 {
74 struct iconv_xlat *dp = data;
75
76 dp->d_csp->cp_refcount--;
77 kobj_delete((struct kobj*)data, M_ICONV);
78 return 0;
79 }
80
81 static int
82 iconv_xlat_conv(void *d2p, const char **inbuf,
83 size_t *inbytesleft, char **outbuf, size_t *outbytesleft,
84 int convchar, int casetype)
85 {
86 struct iconv_xlat *dp = (struct iconv_xlat*)d2p;
87 const char *src;
88 char *dst;
89 int n, r;
90
91 if (inbuf == NULL || *inbuf == NULL || outbuf == NULL || *outbuf == NULL)
92 return 0;
93 if (casetype != 0)
94 return -1;
95 if (convchar == 1)
96 r = n = 1;
97 else
98 r = n = min(*inbytesleft, *outbytesleft);
99 src = *inbuf;
100 dst = *outbuf;
101 while(r--)
102 *dst++ = dp->d_table[(u_char)*src++];
103 *inbuf += n;
104 *outbuf += n;
105 *inbytesleft -= n;
106 *outbytesleft -= n;
107 return 0;
108 }
109
110 static const char *
111 iconv_xlat_name(struct iconv_converter_class *dcp)
112 {
113 return "xlat";
114 }
115
116 static kobj_method_t iconv_xlat_methods[] = {
117 KOBJMETHOD(iconv_converter_open, iconv_xlat_open),
118 KOBJMETHOD(iconv_converter_close, iconv_xlat_close),
119 KOBJMETHOD(iconv_converter_conv, iconv_xlat_conv),
120 #if 0
121 KOBJMETHOD(iconv_converter_init, iconv_xlat_init),
122 KOBJMETHOD(iconv_converter_done, iconv_xlat_done),
123 #endif
124 KOBJMETHOD(iconv_converter_name, iconv_xlat_name),
125 {0, 0}
126 };
127
128 KICONV_CONVERTER(xlat, sizeof(struct iconv_xlat));
Cache object: 2cc25036913640aeb4c5c465a9333707
|