1/*-
2 * Copyright (c) 1991, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Keith Muller of the University of California, San Diego and Lance
7 * Visser of Convex Computer Corporation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static char sccsid[] = "@(#)conv_tab.c	8.1 (Berkeley) 5/31/93";
37#endif
38#endif /* not lint */
39#include <sys/cdefs.h>
40__FBSDID("$FreeBSD$");
41
42#include <sys/types.h>
43
44#include <signal.h>
45#include <stdint.h>
46
47#include "dd.h"
48#include "extern.h"
49
50/*
51 * There are currently six tables:
52 *
53 *	ebcdic		-> ascii	32V		conv=oldascii
54 *	ascii		-> ebcdic	32V		conv=oldebcdic
55 *	ascii		-> ibm ebcdic	32V		conv=oldibm
56 *
57 *	ebcdic		-> ascii	POSIX/S5	conv=ascii
58 *	ascii		-> ebcdic	POSIX/S5	conv=ebcdic
59 *	ascii		-> ibm ebcdic	POSIX/S5	conv=ibm
60 *
61 * Other tables are built from these if multiple conversions are being
62 * done.
63 *
64 * Tables used for conversions to/from IBM and EBCDIC to support an extension
65 * to POSIX P1003.2/D11. The tables referencing POSIX contain data extracted
66 * from tables 4-3 and 4-4 in P1003.2/Draft 11.  The historic tables were
67 * constructed by running against a file with all possible byte values.
68 *
69 * More information can be obtained in "Correspondences of 8-Bit and Hollerith
70 * Codes for Computer Environments-A USASI Tutorial", Communications of the
71 * ACM, Volume 11, Number 11, November 1968, pp. 783-789.
72 */
73
74u_char casetab[256];
75
76/* EBCDIC to ASCII -- 32V compatible. */
77const u_char e2a_32V[] = {
78	0000, 0001, 0002, 0003, 0234, 0011, 0206, 0177,		/* 0000 */
79	0227, 0215, 0216, 0013, 0014, 0015, 0016, 0017,		/* 0010 */
80	0020, 0021, 0022, 0023, 0235, 0205, 0010, 0207,		/* 0020 */
81	0030, 0031, 0222, 0217, 0034, 0035, 0036, 0037,		/* 0030 */
82	0200, 0201, 0202, 0203, 0204, 0012, 0027, 0033,		/* 0040 */
83	0210, 0211, 0212, 0213, 0214, 0005, 0006, 0007,		/* 0050 */
84	0220, 0221, 0026, 0223, 0224, 0225, 0226, 0004,		/* 0060 */
85	0230, 0231, 0232, 0233, 0024, 0025, 0236, 0032,		/* 0070 */
86	0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246,		/* 0100 */
87	0247, 0250, 0133, 0056, 0074, 0050, 0053, 0041,		/* 0110 */
88	0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257,		/* 0120 */
89	0260, 0261, 0135, 0044, 0052, 0051, 0073, 0136,		/* 0130 */
90	0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267,		/* 0140 */
91	0270, 0271, 0174, 0054, 0045, 0137, 0076, 0077,		/* 0150 */
92	0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301,		/* 0160 */
93	0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042,		/* 0170 */
94	0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147,		/* 0200 */
95	0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311,		/* 0210 */
96	0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160,		/* 0220 */
97	0161, 0162, 0313, 0314, 0315, 0316, 0317, 0320,		/* 0230 */
98	0321, 0176, 0163, 0164, 0165, 0166, 0167, 0170,		/* 0240 */
99	0171, 0172, 0322, 0323, 0324, 0325, 0326, 0327,		/* 0250 */
100	0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337,		/* 0260 */
101	0340, 0341, 0342, 0343, 0344, 0345, 0346, 0347,		/* 0270 */
102	0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107,		/* 0300 */
103	0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355,		/* 0310 */
104	0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120,		/* 0320 */
105	0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363,		/* 0330 */
106	0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130,		/* 0340 */
107	0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371,		/* 0350 */
108	0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067,		/* 0360 */
109	0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377,		/* 0370 */
110};
111
112/* ASCII to EBCDIC -- 32V compatible. */
113const u_char a2e_32V[] = {
114	0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057,		/* 0000 */
115	0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017,		/* 0010 */
116	0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046,		/* 0020 */
117	0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037,		/* 0030 */
118	0100, 0117, 0177, 0173, 0133, 0154, 0120, 0175,		/* 0040 */
119	0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141,		/* 0050 */
120	0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,		/* 0060 */
121	0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157,		/* 0070 */
122	0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307,		/* 0100 */
123	0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326,		/* 0110 */
124	0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346,		/* 0120 */
125	0347, 0350, 0351, 0112, 0340, 0132, 0137, 0155,		/* 0130 */
126	0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207,		/* 0140 */
127	0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226,		/* 0150 */
128	0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246,		/* 0160 */
129	0247, 0250, 0251, 0300, 0152, 0320, 0241, 0007,		/* 0170 */
130	0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027,		/* 0200 */
131	0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033,		/* 0210 */
132	0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010,		/* 0220 */
133	0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341,		/* 0230 */
134	0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110,		/* 0240 */
135	0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127,		/* 0250 */
136	0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147,		/* 0260 */
137	0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165,		/* 0270 */
138	0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215,		/* 0300 */
139	0216, 0217, 0220, 0232, 0233, 0234, 0235, 0236,		/* 0310 */
140	0237, 0240, 0252, 0253, 0254, 0255, 0256, 0257,		/* 0320 */
141	0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,		/* 0330 */
142	0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277,		/* 0340 */
143	0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333,		/* 0350 */
144	0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355,		/* 0360 */
145	0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377,		/* 0370 */
146};
147
148/* ASCII to IBM EBCDIC -- 32V compatible. */
149const u_char a2ibm_32V[] = {
150	0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057,		/* 0000 */
151	0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017,		/* 0010 */
152	0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046,		/* 0020 */
153	0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037,		/* 0030 */
154	0100, 0132, 0177, 0173, 0133, 0154, 0120, 0175,		/* 0040 */
155	0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141,		/* 0050 */
156	0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,		/* 0060 */
157	0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157,		/* 0070 */
158	0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307,		/* 0100 */
159	0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326,		/* 0110 */
160	0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346,		/* 0120 */
161	0347, 0350, 0351, 0255, 0340, 0275, 0137, 0155,		/* 0130 */
162	0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207,		/* 0140 */
163	0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226,		/* 0150 */
164	0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246,		/* 0160 */
165	0247, 0250, 0251, 0300, 0117, 0320, 0241, 0007,		/* 0170 */
166	0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027,		/* 0200 */
167	0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033,		/* 0210 */
168	0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010,		/* 0220 */
169	0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341,		/* 0230 */
170	0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110,		/* 0240 */
171	0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127,		/* 0250 */
172	0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147,		/* 0260 */
173	0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165,		/* 0270 */
174	0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215,		/* 0300 */
175	0216, 0217, 0220, 0232, 0233, 0234, 0235, 0236,		/* 0310 */
176	0237, 0240, 0252, 0253, 0254, 0255, 0256, 0257,		/* 0320 */
177	0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,		/* 0330 */
178	0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277,		/* 0340 */
179	0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333,		/* 0350 */
180	0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355,		/* 0360 */
181	0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377,		/* 0370 */
182};
183
184/* EBCDIC to ASCII -- POSIX and System V compatible. */
185const u_char e2a_POSIX[] = {
186	0000, 0001, 0002, 0003, 0234, 0011, 0206, 0177,		/* 0000 */
187	0227, 0215, 0216, 0013, 0014, 0015, 0016, 0017,		/* 0010 */
188	0020, 0021, 0022, 0023, 0235, 0205, 0010, 0207,		/* 0020 */
189	0030, 0031, 0222, 0217, 0034, 0035, 0036, 0037,		/* 0030 */
190	0200, 0201, 0202, 0203, 0204, 0012, 0027, 0033,		/* 0040 */
191	0210, 0211, 0212, 0213, 0214, 0005, 0006, 0007,		/* 0050 */
192	0220, 0221, 0026, 0223, 0224, 0225, 0226, 0004,		/* 0060 */
193	0230, 0231, 0232, 0233, 0024, 0025, 0236, 0032,		/* 0070 */
194	0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246,		/* 0100 */
195	0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174,		/* 0110 */
196	0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257,		/* 0120 */
197	0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176,		/* 0130 */
198	0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267,		/* 0140 */
199	0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077,		/* 0150 */
200	0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301,		/* 0160 */
201	0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042,		/* 0170 */
202	0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147,		/* 0200 */
203	0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311,		/* 0210 */
204	0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160,		/* 0220 */
205	0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320,		/* 0230 */
206	0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170,		/* 0240 */
207	0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327,		/* 0250 */
208	0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337,		/* 0260 */
209	0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347,		/* 0270 */
210	0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107,		/* 0300 */
211	0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355,		/* 0310 */
212	0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120,		/* 0320 */
213	0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363,		/* 0330 */
214	0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130,		/* 0340 */
215	0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371,		/* 0350 */
216	0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067,		/* 0360 */
217	0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377,		/* 0370 */
218};
219
220/* ASCII to EBCDIC -- POSIX and System V compatible. */
221const u_char a2e_POSIX[] = {
222	0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057,		/* 0000 */
223	0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017,		/* 0010 */
224	0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046,		/* 0020 */
225	0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037,		/* 0030 */
226	0100, 0132, 0177, 0173, 0133, 0154, 0120, 0175,		/* 0040 */
227	0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141,		/* 0050 */
228	0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,		/* 0060 */
229	0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157,		/* 0070 */
230	0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307,		/* 0100 */
231	0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326,		/* 0110 */
232	0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346,		/* 0120 */
233	0347, 0350, 0351, 0255, 0340, 0275, 0232, 0155,		/* 0130 */
234	0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207,		/* 0140 */
235	0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226,		/* 0150 */
236	0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246,		/* 0160 */
237	0247, 0250, 0251, 0300, 0117, 0320, 0137, 0007,		/* 0170 */
238	0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027,		/* 0200 */
239	0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033,		/* 0210 */
240	0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010,		/* 0220 */
241	0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341,		/* 0230 */
242	0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110,		/* 0240 */
243	0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127,		/* 0250 */
244	0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147,		/* 0260 */
245	0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165,		/* 0270 */
246	0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215,		/* 0300 */
247	0216, 0217, 0220, 0152, 0233, 0234, 0235, 0236,		/* 0310 */
248	0237, 0240, 0252, 0253, 0254, 0112, 0256, 0257,		/* 0320 */
249	0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,		/* 0330 */
250	0270, 0271, 0272, 0273, 0274, 0241, 0276, 0277,		/* 0340 */
251	0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333,		/* 0350 */
252	0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355,		/* 0360 */
253	0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377,		/* 0370 */
254};
255
256/* ASCII to IBM EBCDIC -- POSIX and System V compatible. */
257const u_char a2ibm_POSIX[] = {
258	0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057,		/* 0000 */
259	0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017,		/* 0010 */
260	0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046,		/* 0020 */
261	0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037,		/* 0030 */
262	0100, 0132, 0177, 0173, 0133, 0154, 0120, 0175,		/* 0040 */
263	0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141,		/* 0050 */
264	0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,		/* 0060 */
265	0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157,		/* 0070 */
266	0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307,		/* 0100 */
267	0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326,		/* 0110 */
268	0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346,		/* 0120 */
269	0347, 0350, 0351, 0255, 0340, 0275, 0137, 0155,		/* 0130 */
270	0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207,		/* 0140 */
271	0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226,		/* 0150 */
272	0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246,		/* 0160 */
273	0247, 0250, 0251, 0300, 0117, 0320, 0241, 0007,		/* 0170 */
274	0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027,		/* 0200 */
275	0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033,		/* 0210 */
276	0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010,		/* 0220 */
277	0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341,		/* 0230 */
278	0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110,		/* 0240 */
279	0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127,		/* 0250 */
280	0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147,		/* 0260 */
281	0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165,		/* 0270 */
282	0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215,		/* 0300 */
283	0216, 0217, 0220, 0232, 0233, 0234, 0235, 0236,		/* 0310 */
284	0237, 0240, 0252, 0253, 0254, 0255, 0256, 0257,		/* 0320 */
285	0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,		/* 0330 */
286	0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277,		/* 0340 */
287	0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333,		/* 0350 */
288	0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355,		/* 0360 */
289	0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377,		/* 0370 */
290};
291