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: src/sys/libkern/iconv_xlat.c,v 1.5.30.1 2009/04/15 03:14:26 kensmith Exp $ 33 */ 34 35 #include <sys/param.h> 36 #include <sys/kernel.h> 37 #include <sys/systm.h> 38 #include <sys/malloc.h> 39 #include <sys/iconv.h> 40 41 #include "iconv_converter_if.h" 42 43 /* 44 * "XLAT" converter 45 */ 46 47 #ifdef MODULE_DEPEND 48 MODULE_DEPEND(iconv_xlat, libiconv, 2, 2, 2); 49 #endif 50 51 /* 52 * XLAT converter instance 53 */ 54 struct iconv_xlat { 55 KOBJ_FIELDS; 56 u_char * d_table; 57 struct iconv_cspair * d_csp; 58 }; 59 60 static int 61 iconv_xlat_open(struct iconv_converter_class *dcp, 62 struct iconv_cspair *csp, struct iconv_cspair *cspf, void **dpp) 63 { 64 struct iconv_xlat *dp; 65 66 dp = (struct iconv_xlat *)kobj_create((struct kobj_class*)dcp, M_ICONV, M_WAITOK); 67 dp->d_table = csp->cp_data; 68 dp->d_csp = csp; 69 csp->cp_refcount++; 70 *dpp = (void*)dp; 71 return 0; 72 } 73 74 static int 75 iconv_xlat_close(void *data) 76 { 77 struct iconv_xlat *dp = data; 78 79 dp->d_csp->cp_refcount--; 80 kobj_delete((struct kobj*)data, M_ICONV); 81 return 0; 82 } 83 84 static int 85 iconv_xlat_conv(void *d2p, const char **inbuf, 86 size_t *inbytesleft, char **outbuf, size_t *outbytesleft, 87 int convchar, int casetype) 88 { 89 struct iconv_xlat *dp = (struct iconv_xlat*)d2p; 90 const char *src; 91 char *dst; 92 int n, r; 93 94 if (inbuf == NULL || *inbuf == NULL || outbuf == NULL || *outbuf == NULL) 95 return 0; 96 if (casetype != 0) 97 return -1; 98 if (convchar == 1) 99 r = n = 1; 100 else 101 r = n = min(*inbytesleft, *outbytesleft); 102 src = *inbuf; 103 dst = *outbuf; 104 while(r--) 105 *dst++ = dp->d_table[(u_char)*src++]; 106 *inbuf += n; 107 *outbuf += n; 108 *inbytesleft -= n; 109 *outbytesleft -= n; 110 return 0; 111 } 112 113 static const char * 114 iconv_xlat_name(struct iconv_converter_class *dcp) 115 { 116 return "xlat"; 117 } 118 119 static kobj_method_t iconv_xlat_methods[] = { 120 KOBJMETHOD(iconv_converter_open, iconv_xlat_open), 121 KOBJMETHOD(iconv_converter_close, iconv_xlat_close), 122 KOBJMETHOD(iconv_converter_conv, iconv_xlat_conv), 123 #if 0 124 KOBJMETHOD(iconv_converter_init, iconv_xlat_init), 125 KOBJMETHOD(iconv_converter_done, iconv_xlat_done), 126 #endif 127 KOBJMETHOD(iconv_converter_name, iconv_xlat_name), 128 KOBJMETHOD_END 129 }; 130 131 KICONV_CONVERTER(xlat, sizeof(struct iconv_xlat)); 132