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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/libkern/iconv_xlat.c 206361 2010-04-07 16:50:38Z joel $ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/kernel.h> 31 #include <sys/systm.h> 32 #include <sys/malloc.h> 33 #include <sys/iconv.h> 34 35 #include "iconv_converter_if.h" 36 37 /* 38 * "XLAT" converter 39 */ 40 41 #ifdef MODULE_DEPEND 42 MODULE_DEPEND(iconv_xlat, libiconv, 2, 2, 2); 43 #endif 44 45 /* 46 * XLAT converter instance 47 */ 48 struct iconv_xlat { 49 KOBJ_FIELDS; 50 u_char * d_table; 51 struct iconv_cspair * d_csp; 52 }; 53 54 static int 55 iconv_xlat_open(struct iconv_converter_class *dcp, 56 struct iconv_cspair *csp, struct iconv_cspair *cspf, void **dpp) 57 { 58 struct iconv_xlat *dp; 59 60 dp = (struct iconv_xlat *)kobj_create((struct kobj_class*)dcp, M_ICONV, M_WAITOK); 61 dp->d_table = csp->cp_data; 62 dp->d_csp = csp; 63 csp->cp_refcount++; 64 *dpp = (void*)dp; 65 return 0; 66 } 67 68 static int 69 iconv_xlat_close(void *data) 70 { 71 struct iconv_xlat *dp = data; 72 73 dp->d_csp->cp_refcount--; 74 kobj_delete((struct kobj*)data, M_ICONV); 75 return 0; 76 } 77 78 static int 79 iconv_xlat_conv(void *d2p, const char **inbuf, 80 size_t *inbytesleft, char **outbuf, size_t *outbytesleft, 81 int convchar, int casetype) 82 { 83 struct iconv_xlat *dp = (struct iconv_xlat*)d2p; 84 const char *src; 85 char *dst; 86 int n, r; 87 88 if (inbuf == NULL || *inbuf == NULL || outbuf == NULL || *outbuf == NULL) 89 return 0; 90 if (casetype != 0) 91 return -1; 92 if (convchar == 1) 93 r = n = 1; 94 else 95 r = n = min(*inbytesleft, *outbytesleft); 96 src = *inbuf; 97 dst = *outbuf; 98 while(r--) 99 *dst++ = dp->d_table[(u_char)*src++]; 100 *inbuf += n; 101 *outbuf += n; 102 *inbytesleft -= n; 103 *outbytesleft -= n; 104 return 0; 105 } 106 107 static const char * 108 iconv_xlat_name(struct iconv_converter_class *dcp) 109 { 110 return "xlat"; 111 } 112 113 static kobj_method_t iconv_xlat_methods[] = { 114 KOBJMETHOD(iconv_converter_open, iconv_xlat_open), 115 KOBJMETHOD(iconv_converter_close, iconv_xlat_close), 116 KOBJMETHOD(iconv_converter_conv, iconv_xlat_conv), 117 #if 0 118 KOBJMETHOD(iconv_converter_init, iconv_xlat_init), 119 KOBJMETHOD(iconv_converter_done, iconv_xlat_done), 120 #endif 121 KOBJMETHOD(iconv_converter_name, iconv_xlat_name), 122 KOBJMETHOD_END 123 }; 124 125 KICONV_CONVERTER(xlat, sizeof(struct iconv_xlat)); 126