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 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)); 129