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