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