| 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)); |