1*16d86563SAlexander Pyhalov /*
2*16d86563SAlexander Pyhalov * CDDL HEADER START
3*16d86563SAlexander Pyhalov *
4*16d86563SAlexander Pyhalov * The contents of this file are subject to the terms of the
5*16d86563SAlexander Pyhalov * Common Development and Distribution License (the "License").
6*16d86563SAlexander Pyhalov * You may not use this file except in compliance with the License.
7*16d86563SAlexander Pyhalov *
8*16d86563SAlexander Pyhalov * You can obtain a copy of the license at src/OPENSOLARIS.LICENSE
9*16d86563SAlexander Pyhalov * or http://www.opensolaris.org/os/licensing.
10*16d86563SAlexander Pyhalov * See the License for the specific language governing permissions
11*16d86563SAlexander Pyhalov * and limitations under the License.
12*16d86563SAlexander Pyhalov *
13*16d86563SAlexander Pyhalov * When distributing Covered Code, include this CDDL HEADER in each
14*16d86563SAlexander Pyhalov * file and include the License file at src/OPENSOLARIS.LICENSE.
15*16d86563SAlexander Pyhalov * If applicable, add the following below this CDDL HEADER, with the
16*16d86563SAlexander Pyhalov * fields enclosed by brackets "[]" replaced with your own identifying
17*16d86563SAlexander Pyhalov * information: Portions Copyright [yyyy] [name of copyright owner]
18*16d86563SAlexander Pyhalov *
19*16d86563SAlexander Pyhalov * CDDL HEADER END
20*16d86563SAlexander Pyhalov */
21*16d86563SAlexander Pyhalov /*
22*16d86563SAlexander Pyhalov * Copyright (c) 1996 by Sun Microsystems, Inc.
23*16d86563SAlexander Pyhalov */
24*16d86563SAlexander Pyhalov
25*16d86563SAlexander Pyhalov
26*16d86563SAlexander Pyhalov #include <errno.h>
27*16d86563SAlexander Pyhalov #include <widec.h>
28*16d86563SAlexander Pyhalov #include "common_def.h"
29*16d86563SAlexander Pyhalov #include "common_han.h"
30*16d86563SAlexander Pyhalov #include "utf_njh_api.h"
31*16d86563SAlexander Pyhalov #include "common_defs.h"
32*16d86563SAlexander Pyhalov
33*16d86563SAlexander Pyhalov /**** _ I C V _ O P E N ****/
34*16d86563SAlexander Pyhalov
_icv_open()35*16d86563SAlexander Pyhalov void* _icv_open()
36*16d86563SAlexander Pyhalov {
37*16d86563SAlexander Pyhalov return((void*)MAGIC_NUMBER);
38*16d86563SAlexander Pyhalov } /* end of int _icv_open(). */
39*16d86563SAlexander Pyhalov
40*16d86563SAlexander Pyhalov
41*16d86563SAlexander Pyhalov /**** _ I C V _ C L O S E ****/
42*16d86563SAlexander Pyhalov
_icv_close(int * cd)43*16d86563SAlexander Pyhalov void _icv_close(int* cd)
44*16d86563SAlexander Pyhalov {
45*16d86563SAlexander Pyhalov if (!cd || cd != (int*)MAGIC_NUMBER)
46*16d86563SAlexander Pyhalov errno = EBADF;
47*16d86563SAlexander Pyhalov } /* end of void _icv_close(int*). */
48*16d86563SAlexander Pyhalov
49*16d86563SAlexander Pyhalov
50*16d86563SAlexander Pyhalov /**** _ I C V _ I C O N V ****/
51*16d86563SAlexander Pyhalov
_icv_iconv(int * cd,char ** inbuf,size_t * inbufleft,char ** outbuf,size_t * outbufleft)52*16d86563SAlexander Pyhalov size_t _icv_iconv(int* cd, char** inbuf, size_t* inbufleft,
53*16d86563SAlexander Pyhalov char** outbuf, size_t* outbufleft)
54*16d86563SAlexander Pyhalov {
55*16d86563SAlexander Pyhalov size_t ret_val = 0;
56*16d86563SAlexander Pyhalov unsigned char* ib;
57*16d86563SAlexander Pyhalov unsigned char* ob;
58*16d86563SAlexander Pyhalov unsigned char* ibtail;
59*16d86563SAlexander Pyhalov unsigned char* obtail;
60*16d86563SAlexander Pyhalov
61*16d86563SAlexander Pyhalov if (!cd || cd != (int*)MAGIC_NUMBER)
62*16d86563SAlexander Pyhalov {
63*16d86563SAlexander Pyhalov errno = EBADF;
64*16d86563SAlexander Pyhalov return((size_t)-1);
65*16d86563SAlexander Pyhalov }
66*16d86563SAlexander Pyhalov
67*16d86563SAlexander Pyhalov if (!inbuf || !(*inbuf))
68*16d86563SAlexander Pyhalov return((size_t)0);
69*16d86563SAlexander Pyhalov
70*16d86563SAlexander Pyhalov ib = (unsigned char*)*inbuf;
71*16d86563SAlexander Pyhalov ob = (unsigned char*)*outbuf;
72*16d86563SAlexander Pyhalov ibtail = ib + *inbufleft;
73*16d86563SAlexander Pyhalov obtail = ob + *outbufleft;
74*16d86563SAlexander Pyhalov
75*16d86563SAlexander Pyhalov while (ib < ibtail)
76*16d86563SAlexander Pyhalov {
77*16d86563SAlexander Pyhalov if (!(*ib & 0x80)) /* 7 bits */
78*16d86563SAlexander Pyhalov {
79*16d86563SAlexander Pyhalov if (ob >= obtail)
80*16d86563SAlexander Pyhalov {
81*16d86563SAlexander Pyhalov errno = E2BIG;
82*16d86563SAlexander Pyhalov ret_val = (size_t)-1;
83*16d86563SAlexander Pyhalov break;
84*16d86563SAlexander Pyhalov }
85*16d86563SAlexander Pyhalov *ob++ = *ib++;
86*16d86563SAlexander Pyhalov }
87*16d86563SAlexander Pyhalov else if ((*ib & 0xF0) == 0xE0) /* 16 bits */
88*16d86563SAlexander Pyhalov {
89*16d86563SAlexander Pyhalov hcode_type utf8_code, njh_code;
90*16d86563SAlexander Pyhalov
91*16d86563SAlexander Pyhalov if ((ibtail - ib) < 3)
92*16d86563SAlexander Pyhalov {
93*16d86563SAlexander Pyhalov errno = EINVAL;
94*16d86563SAlexander Pyhalov ret_val = (size_t)-1;
95*16d86563SAlexander Pyhalov break;
96*16d86563SAlexander Pyhalov }
97*16d86563SAlexander Pyhalov
98*16d86563SAlexander Pyhalov if (!is_valid_utf8_string(ib, 3))
99*16d86563SAlexander Pyhalov {
100*16d86563SAlexander Pyhalov errno = EILSEQ;
101*16d86563SAlexander Pyhalov ret_val = (size_t)-1;
102*16d86563SAlexander Pyhalov break;
103*16d86563SAlexander Pyhalov }
104*16d86563SAlexander Pyhalov
105*16d86563SAlexander Pyhalov utf8_code.byte.byte1 = 0;
106*16d86563SAlexander Pyhalov utf8_code.byte.byte2 = *ib;
107*16d86563SAlexander Pyhalov utf8_code.byte.byte3 = *(ib + 1);
108*16d86563SAlexander Pyhalov utf8_code.byte.byte4 = *(ib + 2);
109*16d86563SAlexander Pyhalov
110*16d86563SAlexander Pyhalov njh_code = _utf8_to_johap92(utf8_code);
111*16d86563SAlexander Pyhalov
112*16d86563SAlexander Pyhalov if (njh_code.code != 0) {
113*16d86563SAlexander Pyhalov /* If find something -> Johap92 code */
114*16d86563SAlexander Pyhalov *ob++ = njh_code.byte.byte3;
115*16d86563SAlexander Pyhalov *ob++ = njh_code.byte.byte4;
116*16d86563SAlexander Pyhalov }
117*16d86563SAlexander Pyhalov else
118*16d86563SAlexander Pyhalov {
119*16d86563SAlexander Pyhalov /* Let's assume the code is non-identical. */
120*16d86563SAlexander Pyhalov if ((obtail - ob) < 2)
121*16d86563SAlexander Pyhalov {
122*16d86563SAlexander Pyhalov errno = E2BIG;
123*16d86563SAlexander Pyhalov ret_val = (size_t)-1;
124*16d86563SAlexander Pyhalov break;
125*16d86563SAlexander Pyhalov }
126*16d86563SAlexander Pyhalov *ob++ = NON_IDENTICAL;
127*16d86563SAlexander Pyhalov *ob++ = NON_IDENTICAL;
128*16d86563SAlexander Pyhalov ret_val += 2;
129*16d86563SAlexander Pyhalov }
130*16d86563SAlexander Pyhalov ib += 3;
131*16d86563SAlexander Pyhalov }
132*16d86563SAlexander Pyhalov else /* 11, 21, 26 & 31 bits codes won't be able to convert. */
133*16d86563SAlexander Pyhalov {
134*16d86563SAlexander Pyhalov short int offset;
135*16d86563SAlexander Pyhalov
136*16d86563SAlexander Pyhalov if ((*ib & 0xE0) == 0xC0) /* 11 */
137*16d86563SAlexander Pyhalov offset = 2;
138*16d86563SAlexander Pyhalov else if ((*ib & 0xF0) == 0xE0) /* 16 */
139*16d86563SAlexander Pyhalov offset = 3;
140*16d86563SAlexander Pyhalov else if ((*ib & 0xF8) == 0xF0) /* 21 */
141*16d86563SAlexander Pyhalov offset = 4;
142*16d86563SAlexander Pyhalov else if ((*ib & 0xFC) == 0xF8) /* 26 */
143*16d86563SAlexander Pyhalov offset = 5;
144*16d86563SAlexander Pyhalov else if ((*ib & 0xFE) == 0xFC) /* 31 */
145*16d86563SAlexander Pyhalov offset = 6;
146*16d86563SAlexander Pyhalov else /* Illegal sequence. */
147*16d86563SAlexander Pyhalov offset = 1;
148*16d86563SAlexander Pyhalov
149*16d86563SAlexander Pyhalov if ((ibtail - ib) < offset)
150*16d86563SAlexander Pyhalov {
151*16d86563SAlexander Pyhalov errno = EINVAL;
152*16d86563SAlexander Pyhalov ret_val = (size_t)-1;
153*16d86563SAlexander Pyhalov break;
154*16d86563SAlexander Pyhalov }
155*16d86563SAlexander Pyhalov
156*16d86563SAlexander Pyhalov if (!is_valid_utf8_string(ib, offset))
157*16d86563SAlexander Pyhalov {
158*16d86563SAlexander Pyhalov errno = EILSEQ;
159*16d86563SAlexander Pyhalov ret_val = (size_t)-1;
160*16d86563SAlexander Pyhalov break;
161*16d86563SAlexander Pyhalov }
162*16d86563SAlexander Pyhalov
163*16d86563SAlexander Pyhalov ib += offset;
164*16d86563SAlexander Pyhalov
165*16d86563SAlexander Pyhalov /* Let's assume the code is non-identical. */
166*16d86563SAlexander Pyhalov offset = (offset > 2) ? 2 : 1;
167*16d86563SAlexander Pyhalov if ((obtail - ob) < offset)
168*16d86563SAlexander Pyhalov {
169*16d86563SAlexander Pyhalov errno = E2BIG;
170*16d86563SAlexander Pyhalov ret_val = (size_t)-1;
171*16d86563SAlexander Pyhalov break;
172*16d86563SAlexander Pyhalov }
173*16d86563SAlexander Pyhalov *ob++ = NON_IDENTICAL;
174*16d86563SAlexander Pyhalov if (offset > 1)
175*16d86563SAlexander Pyhalov *ob++ = NON_IDENTICAL;
176*16d86563SAlexander Pyhalov ret_val += offset;
177*16d86563SAlexander Pyhalov }
178*16d86563SAlexander Pyhalov }
179*16d86563SAlexander Pyhalov
180*16d86563SAlexander Pyhalov *inbuf = (char*)ib;
181*16d86563SAlexander Pyhalov *inbufleft = ibtail - ib;
182*16d86563SAlexander Pyhalov *outbuf = (char*)ob;
183*16d86563SAlexander Pyhalov *outbufleft = obtail - ob;
184*16d86563SAlexander Pyhalov
185*16d86563SAlexander Pyhalov return(ret_val);
186*16d86563SAlexander Pyhalov } /* end of size_t _icv_iconv(int*, char**, size_t*, char**, size_t*).*/
187