source: trunk/third/openssl/crypto/ebcdic.c @ 15530

/* crypto/ebcdic.c */

#ifdef CHARSET_EBCDIC
#include "ebcdic.h"
/*      Initial Port for  Apache-1.3     by <Martin.Kraemer@Mch.SNI.De>
 *      Adapted for       OpenSSL-0.9.4  by <Martin.Kraemer@Mch.SNI.De>
 */

#ifdef _OSD_POSIX
/*
    "BS2000 OSD" is a POSIX subsystem on a main frame.
    It is made by Siemens AG, Germany, for their BS2000 mainframe machines.
    Within the POSIX subsystem, the same character set was chosen as in
    "native BS2000", namely EBCDIC. (EDF04)

    The name "ASCII" in these routines is misleading: actually, conversion
    is not between EBCDIC and ASCII, but EBCDIC(EDF04) and ISO-8859.1;
    that means that (western european) national characters are preserved.

    This table is identical to the one used by rsh/rcp/ftp and other POSIX tools.
*/

/* Here's the bijective ebcdic-to-ascii table: */
const unsigned char os_toascii[256] = {
/*00*/ 0x00, 0x01, 0x02, 0x03, 0x85, 0x09, 0x86, 0x7f,
       0x87, 0x8d, 0x8e, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /*................*/
/*10*/ 0x10, 0x11, 0x12, 0x13, 0x8f, 0x0a, 0x08, 0x97,
       0x18, 0x19, 0x9c, 0x9d, 0x1c, 0x1d, 0x1e, 0x1f, /*................*/
/*20*/ 0x80, 0x81, 0x82, 0x83, 0x84, 0x92, 0x17, 0x1b,
       0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x05, 0x06, 0x07, /*................*/
/*30*/ 0x90, 0x91, 0x16, 0x93, 0x94, 0x95, 0x96, 0x04,
       0x98, 0x99, 0x9a, 0x9b, 0x14, 0x15, 0x9e, 0x1a, /*................*/
/*40*/ 0x20, 0xa0, 0xe2, 0xe4, 0xe0, 0xe1, 0xe3, 0xe5,
       0xe7, 0xf1, 0x60, 0x2e, 0x3c, 0x28, 0x2b, 0x7c, /* .........`.<(+|*/
/*50*/ 0x26, 0xe9, 0xea, 0xeb, 0xe8, 0xed, 0xee, 0xef,
       0xec, 0xdf, 0x21, 0x24, 0x2a, 0x29, 0x3b, 0x9f, /*&.........!$*);.*/
/*60*/ 0x2d, 0x2f, 0xc2, 0xc4, 0xc0, 0xc1, 0xc3, 0xc5,
       0xc7, 0xd1, 0x5e, 0x2c, 0x25, 0x5f, 0x3e, 0x3f, /*-/........^,%_>?*/
/*70*/ 0xf8, 0xc9, 0xca, 0xcb, 0xc8, 0xcd, 0xce, 0xcf,
       0xcc, 0xa8, 0x3a, 0x23, 0x40, 0x27, 0x3d, 0x22, /*..........:#@'="*/
/*80*/ 0xd8, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
       0x68, 0x69, 0xab, 0xbb, 0xf0, 0xfd, 0xfe, 0xb1, /*.abcdefghi......*/
/*90*/ 0xb0, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70,
       0x71, 0x72, 0xaa, 0xba, 0xe6, 0xb8, 0xc6, 0xa4, /*.jklmnopqr......*/
/*a0*/ 0xb5, 0xaf, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
       0x79, 0x7a, 0xa1, 0xbf, 0xd0, 0xdd, 0xde, 0xae, /*..stuvwxyz......*/
/*b0*/ 0xa2, 0xa3, 0xa5, 0xb7, 0xa9, 0xa7, 0xb6, 0xbc,
       0xbd, 0xbe, 0xac, 0x5b, 0x5c, 0x5d, 0xb4, 0xd7, /*...........[\]..*/
/*c0*/ 0xf9, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
       0x48, 0x49, 0xad, 0xf4, 0xf6, 0xf2, 0xf3, 0xf5, /*.ABCDEFGHI......*/
/*d0*/ 0xa6, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50,
       0x51, 0x52, 0xb9, 0xfb, 0xfc, 0xdb, 0xfa, 0xff, /*.JKLMNOPQR......*/
/*e0*/ 0xd9, 0xf7, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
       0x59, 0x5a, 0xb2, 0xd4, 0xd6, 0xd2, 0xd3, 0xd5, /*..STUVWXYZ......*/
/*f0*/ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
       0x38, 0x39, 0xb3, 0x7b, 0xdc, 0x7d, 0xda, 0x7e  /*0123456789.{.}.~*/
};


/* The ascii-to-ebcdic table: */
const unsigned char os_toebcdic[256] = {
/*00*/  0x00, 0x01, 0x02, 0x03, 0x37, 0x2d, 0x2e, 0x2f,
        0x16, 0x05, 0x15, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,  /*................*/
/*10*/  0x10, 0x11, 0x12, 0x13, 0x3c, 0x3d, 0x32, 0x26,
        0x18, 0x19, 0x3f, 0x27, 0x1c, 0x1d, 0x1e, 0x1f,  /*................*/
/*20*/  0x40, 0x5a, 0x7f, 0x7b, 0x5b, 0x6c, 0x50, 0x7d,
        0x4d, 0x5d, 0x5c, 0x4e, 0x6b, 0x60, 0x4b, 0x61,  /* !"#$%&'()*+,-./ */
/*30*/  0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
        0xf8, 0xf9, 0x7a, 0x5e, 0x4c, 0x7e, 0x6e, 0x6f,  /*0123456789:;<=>?*/
/*40*/  0x7c, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
        0xc8, 0xc9, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6,  /*@ABCDEFGHIJKLMNO*/
/*50*/  0xd7, 0xd8, 0xd9, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6,
        0xe7, 0xe8, 0xe9, 0xbb, 0xbc, 0xbd, 0x6a, 0x6d,  /*PQRSTUVWXYZ[\]^_*/
/*60*/  0x4a, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
        0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96,  /*`abcdefghijklmno*/
/*70*/  0x97, 0x98, 0x99, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6,
        0xa7, 0xa8, 0xa9, 0xfb, 0x4f, 0xfd, 0xff, 0x07,  /*pqrstuvwxyz{|}~.*/
/*80*/  0x20, 0x21, 0x22, 0x23, 0x24, 0x04, 0x06, 0x08,
        0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x09, 0x0a, 0x14,  /*................*/
/*90*/  0x30, 0x31, 0x25, 0x33, 0x34, 0x35, 0x36, 0x17,
        0x38, 0x39, 0x3a, 0x3b, 0x1a, 0x1b, 0x3e, 0x5f,  /*................*/
/*a0*/  0x41, 0xaa, 0xb0, 0xb1, 0x9f, 0xb2, 0xd0, 0xb5,
        0x79, 0xb4, 0x9a, 0x8a, 0xba, 0xca, 0xaf, 0xa1,  /*................*/
/*b0*/  0x90, 0x8f, 0xea, 0xfa, 0xbe, 0xa0, 0xb6, 0xb3,
        0x9d, 0xda, 0x9b, 0x8b, 0xb7, 0xb8, 0xb9, 0xab,  /*................*/
/*c0*/  0x64, 0x65, 0x62, 0x66, 0x63, 0x67, 0x9e, 0x68,
        0x74, 0x71, 0x72, 0x73, 0x78, 0x75, 0x76, 0x77,  /*................*/
/*d0*/  0xac, 0x69, 0xed, 0xee, 0xeb, 0xef, 0xec, 0xbf,
        0x80, 0xe0, 0xfe, 0xdd, 0xfc, 0xad, 0xae, 0x59,  /*................*/
/*e0*/  0x44, 0x45, 0x42, 0x46, 0x43, 0x47, 0x9c, 0x48,
        0x54, 0x51, 0x52, 0x53, 0x58, 0x55, 0x56, 0x57,  /*................*/
/*f0*/  0x8c, 0x49, 0xcd, 0xce, 0xcb, 0xcf, 0xcc, 0xe1,
        0x70, 0xc0, 0xde, 0xdb, 0xdc, 0x8d, 0x8e, 0xdf   /*................*/
};

#else  /*_OSD_POSIX*/

/*
This code does basic character mapping for IBM's TPF and OS/390 operating systems.
It is a modified version of the BS2000 table.

Bijective EBCDIC (character set IBM-1047) to US-ASCII table:
This table is bijective - there are no ambigous or duplicate characters.
*/
const unsigned char os_toascii[256] = {
    0x00, 0x01, 0x02, 0x03, 0x85, 0x09, 0x86, 0x7f, /* 00-0f:           */
    0x87, 0x8d, 0x8e, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* ................ */
    0x10, 0x11, 0x12, 0x13, 0x8f, 0x0a, 0x08, 0x97, /* 10-1f:           */
    0x18, 0x19, 0x9c, 0x9d, 0x1c, 0x1d, 0x1e, 0x1f, /* ................ */
    0x80, 0x81, 0x82, 0x83, 0x84, 0x92, 0x17, 0x1b, /* 20-2f:           */
    0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x05, 0x06, 0x07, /* ................ */
    0x90, 0x91, 0x16, 0x93, 0x94, 0x95, 0x96, 0x04, /* 30-3f:           */
    0x98, 0x99, 0x9a, 0x9b, 0x14, 0x15, 0x9e, 0x1a, /* ................ */
    0x20, 0xa0, 0xe2, 0xe4, 0xe0, 0xe1, 0xe3, 0xe5, /* 40-4f:           */
    0xe7, 0xf1, 0xa2, 0x2e, 0x3c, 0x28, 0x2b, 0x7c, /*  ...........<(+| */
    0x26, 0xe9, 0xea, 0xeb, 0xe8, 0xed, 0xee, 0xef, /* 50-5f:           */
    0xec, 0xdf, 0x21, 0x24, 0x2a, 0x29, 0x3b, 0x5e, /* &.........!$*);^ */
    0x2d, 0x2f, 0xc2, 0xc4, 0xc0, 0xc1, 0xc3, 0xc5, /* 60-6f:           */
    0xc7, 0xd1, 0xa6, 0x2c, 0x25, 0x5f, 0x3e, 0x3f, /* -/.........,%_>? */
    0xf8, 0xc9, 0xca, 0xcb, 0xc8, 0xcd, 0xce, 0xcf, /* 70-7f:           */
    0xcc, 0x60, 0x3a, 0x23, 0x40, 0x27, 0x3d, 0x22, /* .........`:#@'=" */
    0xd8, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* 80-8f:           */
    0x68, 0x69, 0xab, 0xbb, 0xf0, 0xfd, 0xfe, 0xb1, /* .abcdefghi...... */
    0xb0, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, /* 90-9f:           */
    0x71, 0x72, 0xaa, 0xba, 0xe6, 0xb8, 0xc6, 0xa4, /* .jklmnopqr...... */
    0xb5, 0x7e, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, /* a0-af:           */
    0x79, 0x7a, 0xa1, 0xbf, 0xd0, 0x5b, 0xde, 0xae, /* .~stuvwxyz...[.. */
    0xac, 0xa3, 0xa5, 0xb7, 0xa9, 0xa7, 0xb6, 0xbc, /* b0-bf:           */
    0xbd, 0xbe, 0xdd, 0xa8, 0xaf, 0x5d, 0xb4, 0xd7, /* .............].. */
    0x7b, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* c0-cf:           */
    0x48, 0x49, 0xad, 0xf4, 0xf6, 0xf2, 0xf3, 0xf5, /* {ABCDEFGHI...... */
    0x7d, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, /* d0-df:           */
    0x51, 0x52, 0xb9, 0xfb, 0xfc, 0xf9, 0xfa, 0xff, /* }JKLMNOPQR...... */
    0x5c, 0xf7, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, /* e0-ef:           */
    0x59, 0x5a, 0xb2, 0xd4, 0xd6, 0xd2, 0xd3, 0xd5, /* \.STUVWXYZ...... */
    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* f0-ff:           */
    0x38, 0x39, 0xb3, 0xdb, 0xdc, 0xd9, 0xda, 0x9f  /* 0123456789...... */
};


/*
The US-ASCII to EBCDIC (character set IBM-1047) table:
This table is bijective (no ambiguous or duplicate characters)
*/
const unsigned char os_toebcdic[256] = {
    0x00, 0x01, 0x02, 0x03, 0x37, 0x2d, 0x2e, 0x2f, /* 00-0f:           */
    0x16, 0x05, 0x15, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* ................ */
    0x10, 0x11, 0x12, 0x13, 0x3c, 0x3d, 0x32, 0x26, /* 10-1f:           */
    0x18, 0x19, 0x3f, 0x27, 0x1c, 0x1d, 0x1e, 0x1f, /* ................ */
    0x40, 0x5a, 0x7f, 0x7b, 0x5b, 0x6c, 0x50, 0x7d, /* 20-2f:           */
    0x4d, 0x5d, 0x5c, 0x4e, 0x6b, 0x60, 0x4b, 0x61, /*  !"#$%&'()*+,-./ */
    0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, /* 30-3f:           */
    0xf8, 0xf9, 0x7a, 0x5e, 0x4c, 0x7e, 0x6e, 0x6f, /* 0123456789:;<=>? */
    0x7c, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, /* 40-4f:           */
    0xc8, 0xc9, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, /* @ABCDEFGHIJKLMNO */
    0xd7, 0xd8, 0xd9, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, /* 50-5f:           */
    0xe7, 0xe8, 0xe9, 0xad, 0xe0, 0xbd, 0x5f, 0x6d, /* PQRSTUVWXYZ[\]^_ */
    0x79, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 60-6f:           */
    0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, /* `abcdefghijklmno */
    0x97, 0x98, 0x99, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, /* 70-7f:           */
    0xa7, 0xa8, 0xa9, 0xc0, 0x4f, 0xd0, 0xa1, 0x07, /* pqrstuvwxyz{|}~. */
    0x20, 0x21, 0x22, 0x23, 0x24, 0x04, 0x06, 0x08, /* 80-8f:           */
    0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x09, 0x0a, 0x14, /* ................ */
    0x30, 0x31, 0x25, 0x33, 0x34, 0x35, 0x36, 0x17, /* 90-9f:           */
    0x38, 0x39, 0x3a, 0x3b, 0x1a, 0x1b, 0x3e, 0xff, /* ................ */
    0x41, 0xaa, 0x4a, 0xb1, 0x9f, 0xb2, 0x6a, 0xb5, /* a0-af:           */
    0xbb, 0xb4, 0x9a, 0x8a, 0xb0, 0xca, 0xaf, 0xbc, /* ................ */
    0x90, 0x8f, 0xea, 0xfa, 0xbe, 0xa0, 0xb6, 0xb3, /* b0-bf:           */
    0x9d, 0xda, 0x9b, 0x8b, 0xb7, 0xb8, 0xb9, 0xab, /* ................ */
    0x64, 0x65, 0x62, 0x66, 0x63, 0x67, 0x9e, 0x68, /* c0-cf:           */
    0x74, 0x71, 0x72, 0x73, 0x78, 0x75, 0x76, 0x77, /* ................ */
    0xac, 0x69, 0xed, 0xee, 0xeb, 0xef, 0xec, 0xbf, /* d0-df:           */
    0x80, 0xfd, 0xfe, 0xfb, 0xfc, 0xba, 0xae, 0x59, /* ................ */
    0x44, 0x45, 0x42, 0x46, 0x43, 0x47, 0x9c, 0x48, /* e0-ef:           */
    0x54, 0x51, 0x52, 0x53, 0x58, 0x55, 0x56, 0x57, /* ................ */
    0x8c, 0x49, 0xcd, 0xce, 0xcb, 0xcf, 0xcc, 0xe1, /* f0-ff:           */
    0x70, 0xdd, 0xde, 0xdb, 0xdc, 0x8d, 0x8e, 0xdf  /* ................ */
};
#endif /*_OSD_POSIX*/

/* Translate a memory block from EBCDIC (host charset) to ASCII (net charset)
 * dest and srce may be identical, or separate memory blocks, but
 * should not overlap. These functions intentionally have an interface
 * compatible to memcpy(3).
 */

void *
ebcdic2ascii(void *dest, const void *srce, size_t count)
{
    unsigned char *udest = dest;
    const unsigned char *usrce = srce;

    while (count-- != 0) {
        *udest++ = os_toascii[*usrce++];
    }

    return dest;
}

void *
ascii2ebcdic(void *dest, const void *srce, size_t count)
{
    unsigned char *udest = dest;
    const unsigned char *usrce = srce;

    while (count-- != 0) {
        *udest++ = os_toebcdic[*usrce++];
    }

    return dest;
}

#else /*CHARSET_EBCDIC*/
#ifdef PEDANTIC
static void *dummy=&dummy;
#endif
#endif