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 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/param.h> 37 #include <sys/kernel.h> 38 #include <sys/systm.h> 39 #include <sys/malloc.h> 40 #include <sys/iconv.h> 41 42 #include "iconv_converter_if.h" 43 44 /* 45 * "XLAT" converter 46 */ 47 48 #ifdef MODULE_DEPEND 49 MODULE_DEPEND(iconv_xlat, libiconv, 2, 2, 2); 50 #endif 51 52 /* 53 * XLAT converter instance 54 */ 55 struct iconv_xlat { 56 KOBJ_FIELDS; 57 u_char * d_table; 58 struct iconv_cspair * d_csp; 59 }; 60 61 static int 62 iconv_xlat_open(struct iconv_converter_class *dcp, 63 struct iconv_cspair *csp, struct iconv_cspair *cspf, void **dpp) 64 { 65 struct iconv_xlat *dp; 66 67 dp = (struct iconv_xlat *)kobj_create((struct kobj_class*)dcp, M_ICONV, M_WAITOK); 68 dp->d_table = csp->cp_data; 69 dp->d_csp = csp; 70 csp->cp_refcount++; 71 *dpp = (void*)dp; 72 return 0; 73 } 74 75 static int 76 iconv_xlat_close(void *data) 77 { 78 struct iconv_xlat *dp = data; 79 80 dp->d_csp->cp_refcount--; 81 kobj_delete((struct kobj*)data, M_ICONV); 82 return 0; 83 } 84 85 static int 86 iconv_xlat_conv(void *d2p, const char **inbuf, 87 size_t *inbytesleft, char **outbuf, size_t *outbytesleft, 88 int convchar, int casetype) 89 { 90 struct iconv_xlat *dp = (struct iconv_xlat*)d2p; 91 const char *src; 92 char *dst; 93 int n, r; 94 95 if (inbuf == NULL || *inbuf == NULL || outbuf == NULL || *outbuf == NULL) 96 return 0; 97 if (casetype != 0) 98 return -1; 99 if (convchar == 1) 100 r = n = 1; 101 else 102 r = n = min(*inbytesleft, *outbytesleft); 103 src = *inbuf; 104 dst = *outbuf; 105 while(r--) 106 *dst++ = dp->d_table[(u_char)*src++]; 107 *inbuf += n; 108 *outbuf += n; 109 *inbytesleft -= n; 110 *outbytesleft -= n; 111 return 0; 112 } 113 114 static const char * 115 iconv_xlat_name(struct iconv_converter_class *dcp) 116 { 117 return "xlat"; 118 } 119 120 static kobj_method_t iconv_xlat_methods[] = { 121 KOBJMETHOD(iconv_converter_open, iconv_xlat_open), 122 KOBJMETHOD(iconv_converter_close, iconv_xlat_close), 123 KOBJMETHOD(iconv_converter_conv, iconv_xlat_conv), 124 #if 0 125 KOBJMETHOD(iconv_converter_init, iconv_xlat_init), 126 KOBJMETHOD(iconv_converter_done, iconv_xlat_done), 127 #endif 128 KOBJMETHOD(iconv_converter_name, iconv_xlat_name), 129 {0, 0} 130 }; 131 132 KICONV_CONVERTER(xlat, sizeof(struct iconv_xlat)); 133