Fixed out-by-one error in previous commit.

[AROS.git] / workbench / c / Version.c

/*
    Copyright © 1995-2011, The AROS Development Team. All rights reserved.
    $Id$

    Desc: Version CLI command
    Lang: english
*/

/******************************************************************************

    NAME

        Version [<library|device|file>] [<version #>] [<revision #>] [FILE] [FULL] [RES] 

    SYNOPSIS

        NAME/M,MD5SUM/S,VERSION/N,REVISION/N,FILE/S,FULL/S,RES/S,ARCH/S

    LOCATION

        C:

    FUNCTION

    Prints or checks the version and revision information of a file, library or device.
      
    INPUTS

    NAME      -- name of file, library or device to check. If not given it
                 prints version and revision of Kickstart.
    MD5SUM    -- #FIXME what is that?
    VERSION   -- checks for version and returns error code 5 (warn) if the
                 version of the file is lower.
    REVISION  -- checks for revision and returns error code 5 (warn) if the
                 revision of the file is lower.
    FILE      -- reads from file and ignores currently loaded libraries and devices
    FULL      -- prints additional information
    RES       -- gets version of resident commands
    ARCH      -- displays architecture information about a file
    
    RESULT

    NOTES

    EXAMPLE

    BUGS

    SEE ALSO

    INTERNALS

    HISTORY

******************************************************************************/

#define ELF_32BIT /* This is needed for correct .ARM.Attributes parsing */

#include <aros/arosbase.h>
#include <aros/debug.h>
#include <aros/inquire.h>
#include <proto/aros.h>

#define ENABLE_RT 1
#include <aros/rt.h>

#include <string.h>
#include <ctype.h>

#include <proto/exec.h>
#include <exec/execbase.h>
#include <exec/libraries.h>
#include <exec/memory.h>
#include <exec/resident.h>
#include <proto/dos.h>
#include <proto/utility.h>
#include <proto/alib.h>
#include <dos/datetime.h>
#include <dos/dos.h>
#include <dos/dosextens.h>
#include <dos/elf.h>

/*===[md5.h]==============================================================*/

/* Data structure for MD5 (Message-Digest) computation */
typedef struct {
    ULONG buf[4];         /* scratch buffer */
    ULONG i[2];           /* number of _bits_ handled mod 2^64 */
    unsigned char in[64]; /* input buffer */
} MD5_CTX;

void MD5Init(MD5_CTX *mdContext);
void MD5Update(MD5_CTX *mdContext, unsigned char *inBuf, unsigned int inLen);
void MD5Final(unsigned char digest[16], MD5_CTX *mdContext);

/*==[md5.c]===============================================================*/

/*
 * Used in 'version' as is, just removed the #include "ambient.h"
 *
 * Harry Sintonen <sintonen@iki.fi>
 */

/*
 * Ambient - the ultimate desktop
 * ------------------------------
 * (c) 2001-2003 by David Gerber <zapek@meanmachine.ch>
 * All Rights Reserved
 *
 * $Id$
 */

//#include "ambient.h"
//#include <exec/types.h>

/*
 ***********************************************************************
 ** md5.c -- the source code for MD5 routines                         **
 ** RSA Data Security, Inc. MD5 Message-Digest Algorithm              **
 ** Created: 2/17/90 RLR                                              **
 ** Revised: 1/91 SRD,AJ,BSK,JT Reference C Version                   **
 ***********************************************************************
 */

/*
 * Edited 7 May 93 by CP to change the interface to match that
 * of the MD5 routines in RSAREF.  Due to this alteration, this
 * code is "derived from the RSA Data Security, Inc. MD5 Message-
 * Digest Algorithm".  (See below.)
 */

/*
 ***********************************************************************
 ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved.  **
 **                                                                   **
 ** License to copy and use this software is granted provided that    **
 ** it is identified as the "RSA Data Security, Inc. MD5 Message-     **
 ** Digest Algorithm" in all material mentioning or referencing this  **
 ** software or this function.                                        **
 **                                                                   **
 ** License is also granted to make and use derivative works          **
 ** provided that such works are identified as "derived from the RSA  **
 ** Data Security, Inc. MD5 Message-Digest Algorithm" in all          **
 ** material mentioning or referencing the derived work.              **
 **                                                                   **
 ** RSA Data Security, Inc. makes no representations concerning       **
 ** either the merchantability of this software or the suitability    **
 ** of this software for any particular purpose.  It is provided "as  **
 ** is" without express or implied warranty of any kind.              **
 **                                                                   **
 ** These notices must be retained in any copies of any part of this  **
 ** documentation and/or software.                                    **
 ***********************************************************************
 */

//#include "md5.h"

/*
 ***********************************************************************
 **  Message-digest routines:                                         **
 **  To form the message digest for a message M                       **
 **    (1) Initialize a context buffer mdContext using MD5Init        **
 **    (2) Call MD5Update on mdContext and M                          **
 **    (3) Call MD5Final on mdContext                                 **
 **  The message digest is now in the bugffer passed to MD5Final      **
 ***********************************************************************
 */

static unsigned char PADDING[64] = {
    0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

/* F, G, H and I are basic MD5 functions */
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define I(x, y, z) ((y) ^ ((x) | (~z)))

/* ROTATE_LEFT rotates x left n bits */
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))

/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */
/* Rotation is separate from addition to prevent recomputation */
#define FF(a, b, c, d, x, s, ac) \
    {(a) += F ((b), (c), (d)) + (x) + (ULONG)(ac); \
    (a) = ROTATE_LEFT ((a), (s)); \
    (a) += (b); \
    }
#define GG(a, b, c, d, x, s, ac) \
    {(a) += G ((b), (c), (d)) + (x) + (ULONG)(ac); \
    (a) = ROTATE_LEFT ((a), (s)); \
    (a) += (b); \
    }
#define HH(a, b, c, d, x, s, ac) \
    {(a) += H ((b), (c), (d)) + (x) + (ULONG)(ac); \
    (a) = ROTATE_LEFT ((a), (s)); \
    (a) += (b); \
    }
#define II(a, b, c, d, x, s, ac) \
    {(a) += I ((b), (c), (d)) + (x) + (ULONG)(ac); \
    (a) = ROTATE_LEFT ((a), (s)); \
    (a) += (b); \
    }

static void Transform(register ULONG *buf,register ULONG *in);

/* The routine MD5Init initializes the message-digest context
   mdContext. All fields are set to zero.
 */
void MD5Init ( MD5_CTX *mdContext)
{
    mdContext->i[0] = mdContext->i[1] = (ULONG)0;

    /* Load magic initialization constants.
     */
    mdContext->buf[0] = (ULONG)0x67452301L;
    mdContext->buf[1] = (ULONG)0xefcdab89L;
    mdContext->buf[2] = (ULONG)0x98badcfeL;
    mdContext->buf[3] = (ULONG)0x10325476L;
}

/* The routine MD5Update updates the message-digest context to
   account for the presence of each of the characters inBuf[0..inLen-1]
   in the message whose digest is being computed.
 */
void MD5Update (MD5_CTX *mdContext, unsigned char *inBuf,
                       unsigned int inLen)
{
    register int i, ii;
    int mdi;
    ULONG in[16];

    /* compute number of bytes mod 64 */
    mdi = (int)((mdContext->i[0] >> 3) & 0x3F);

    /* update number of bits */
    if ((mdContext->i[0] + ((ULONG)inLen << 3)) < mdContext->i[0])
        mdContext->i[1]++;
    mdContext->i[0] += ((ULONG)inLen << 3);
    mdContext->i[1] += ((ULONG)inLen >> 29);

    while (inLen--)
    {
        /* add new character to buffer, increment mdi */
        mdContext->in[mdi++] = *inBuf++;

        /* transform if necessary */
        if (mdi == 0x40)
        {
            for (i = 0, ii = 0; i < 16; i++, ii += 4)
                in[i] = (((ULONG)mdContext->in[ii+3]) << 24) |
                        (((ULONG)mdContext->in[ii+2]) << 16) |
                        (((ULONG)mdContext->in[ii+1]) << 8) |
                        ((ULONG)mdContext->in[ii]);
            Transform (mdContext->buf, in);
            mdi = 0;
        }
    }
}

/* The routine MD5Final terminates the message-digest computation and
   ends with the desired message digest in mdContext->digest[0...15].
 */
void MD5Final (unsigned char digest[16], MD5_CTX *mdContext)
{
    ULONG in[16];
    int mdi;
    unsigned int i, ii;
    unsigned int padLen;

    /* save number of bits */
    in[14] = mdContext->i[0];
    in[15] = mdContext->i[1];

    /* compute number of bytes mod 64 */
    mdi = (int)((mdContext->i[0] >> 3) & 0x3F);

    /* pad out to 56 mod 64 */
    padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi);
    MD5Update (mdContext, PADDING, padLen);

    /* append length in bits and transform */
    for (i = 0, ii = 0; i < 14; i++, ii += 4)
        in[i] = (((ULONG)mdContext->in[ii+3]) << 24) |
                (((ULONG)mdContext->in[ii+2]) << 16) |
                (((ULONG)mdContext->in[ii+1]) << 8) |
                ((ULONG)mdContext->in[ii]);
    Transform (mdContext->buf, in);

    /* store buffer in digest */
    for (i = 0, ii = 0; i < 4; i++, ii += 4)
    {
        digest[ii]   = (unsigned char) (mdContext->buf[i]        & 0xFF);
        digest[ii+1] = (unsigned char)((mdContext->buf[i] >> 8)  & 0xFF);
        digest[ii+2] = (unsigned char)((mdContext->buf[i] >> 16) & 0xFF);
        digest[ii+3] = (unsigned char)((mdContext->buf[i] >> 24) & 0xFF);
    }
}

/* Basic MD5 step. Transforms buf based on in.  Note that if the Mysterious
   Constants are arranged backwards in little-endian order and decrypted with
   the DES they produce OCCULT MESSAGES!
 */
void Transform(register ULONG *buf,register ULONG *in)
{
    register ULONG a = buf[0], b = buf[1], c = buf[2], d = buf[3];

    /* Round 1 */
#define S11 7
#define S12 12
#define S13 17
#define S14 22
    FF ( a, b, c, d, in[ 0], S11, 0xD76AA478L); /* 1 */
    FF ( d, a, b, c, in[ 1], S12, 0xE8C7B756L); /* 2 */
    FF ( c, d, a, b, in[ 2], S13, 0x242070DBL); /* 3 */
    FF ( b, c, d, a, in[ 3], S14, 0xC1BDCEEEL); /* 4 */
    FF ( a, b, c, d, in[ 4], S11, 0xF57C0FAFL); /* 5 */
    FF ( d, a, b, c, in[ 5], S12, 0x4787C62AL); /* 6 */
    FF ( c, d, a, b, in[ 6], S13, 0xA8304613L); /* 7 */
    FF ( b, c, d, a, in[ 7], S14, 0xFD469501L); /* 8 */
    FF ( a, b, c, d, in[ 8], S11, 0x698098D8L); /* 9 */
    FF ( d, a, b, c, in[ 9], S12, 0x8B44F7AFL); /* 10 */
    FF ( c, d, a, b, in[10], S13, 0xFFFF5BB1L); /* 11 */
    FF ( b, c, d, a, in[11], S14, 0x895CD7BEL); /* 12 */
    FF ( a, b, c, d, in[12], S11, 0x6B901122L); /* 13 */
    FF ( d, a, b, c, in[13], S12, 0xFD987193L); /* 14 */
    FF ( c, d, a, b, in[14], S13, 0xA679438EL); /* 15 */
    FF ( b, c, d, a, in[15], S14, 0x49B40821L); /* 16 */

    /* Round 2 */
#define S21 5
#define S22 9
#define S23 14
#define S24 20
    GG ( a, b, c, d, in[ 1], S21, 0xF61E2562L); /* 17 */
    GG ( d, a, b, c, in[ 6], S22, 0xC040B340L); /* 18 */
    GG ( c, d, a, b, in[11], S23, 0x265E5A51L); /* 19 */
    GG ( b, c, d, a, in[ 0], S24, 0xE9B6C7AAL); /* 20 */
    GG ( a, b, c, d, in[ 5], S21, 0xD62F105DL); /* 21 */
    GG ( d, a, b, c, in[10], S22, 0x02441453L); /* 22 */
    GG ( c, d, a, b, in[15], S23, 0xD8A1E681L); /* 23 */
    GG ( b, c, d, a, in[ 4], S24, 0xE7D3FBC8L); /* 24 */
    GG ( a, b, c, d, in[ 9], S21, 0x21E1CDE6L); /* 25 */
    GG ( d, a, b, c, in[14], S22, 0xC33707D6L); /* 26 */
    GG ( c, d, a, b, in[ 3], S23, 0xF4D50D87L); /* 27 */
    GG ( b, c, d, a, in[ 8], S24, 0x455A14EDL); /* 28 */
    GG ( a, b, c, d, in[13], S21, 0xA9E3E905L); /* 29 */
    GG ( d, a, b, c, in[ 2], S22, 0xFCEFA3F8L); /* 30 */
    GG ( c, d, a, b, in[ 7], S23, 0x676F02D9L); /* 31 */
    GG ( b, c, d, a, in[12], S24, 0x8D2A4C8AL); /* 32 */

    /* Round 3 */
#define S31 4
#define S32 11
#define S33 16
#define S34 23
    HH ( a, b, c, d, in[ 5], S31, 0xFFFA3942L); /* 33 */
    HH ( d, a, b, c, in[ 8], S32, 0x8771F681L); /* 34 */
    HH ( c, d, a, b, in[11], S33, 0x6D9D6122L); /* 35 */
    HH ( b, c, d, a, in[14], S34, 0xFDE5380CL); /* 36 */
    HH ( a, b, c, d, in[ 1], S31, 0xA4BEEA44L); /* 37 */
    HH ( d, a, b, c, in[ 4], S32, 0x4BDECFA9L); /* 38 */
    HH ( c, d, a, b, in[ 7], S33, 0xF6BB4B60L); /* 39 */
    HH ( b, c, d, a, in[10], S34, 0xBEBFBC70L); /* 40 */
    HH ( a, b, c, d, in[13], S31, 0x289B7EC6L); /* 41 */
    HH ( d, a, b, c, in[ 0], S32, 0xEAA127FAL); /* 42 */
    HH ( c, d, a, b, in[ 3], S33, 0xD4EF3085L); /* 43 */
    HH ( b, c, d, a, in[ 6], S34, 0x04881D05L); /* 44 */
    HH ( a, b, c, d, in[ 9], S31, 0xD9D4D039L); /* 45 */
    HH ( d, a, b, c, in[12], S32, 0xE6DB99E5L); /* 46 */
    HH ( c, d, a, b, in[15], S33, 0x1FA27CF8L); /* 47 */
    HH ( b, c, d, a, in[ 2], S34, 0xC4AC5665L); /* 48 */

    /* Round 4 */
#define S41 6
#define S42 10
#define S43 15
#define S44 21
    II ( a, b, c, d, in[ 0], S41, 0xF4292244L); /* 49 */
    II ( d, a, b, c, in[ 7], S42, 0x432AFF97L); /* 50 */
    II ( c, d, a, b, in[14], S43, 0xAB9423A7L); /* 51 */
    II ( b, c, d, a, in[ 5], S44, 0xFC93A039L); /* 52 */
    II ( a, b, c, d, in[12], S41, 0x655B59C3L); /* 53 */
    II ( d, a, b, c, in[ 3], S42, 0x8F0CCC92L); /* 54 */
    II ( c, d, a, b, in[10], S43, 0xFFEFF47DL); /* 55 */
    II ( b, c, d, a, in[ 1], S44, 0x85845DD1L); /* 56 */
    II ( a, b, c, d, in[ 8], S41, 0x6FA87E4FL); /* 57 */
    II ( d, a, b, c, in[15], S42, 0xFE2CE6E0L); /* 58 */
    II ( c, d, a, b, in[ 6], S43, 0xA3014314L); /* 59 */
    II ( b, c, d, a, in[13], S44, 0x4E0811A1L); /* 60 */
    II ( a, b, c, d, in[ 4], S41, 0xF7537E82L); /* 61 */
    II ( d, a, b, c, in[11], S42, 0xBD3AF235L); /* 62 */
    II ( c, d, a, b, in[ 2], S43, 0x2AD7D2BBL); /* 63 */
    II ( b, c, d, a, in[ 9], S44, 0xEB86D391L); /* 64 */

    buf[0] += a;
    buf[1] += b;
    buf[2] += c;
    buf[3] += d;
}

/*==[end md5.c]============================================================*/


const TEXT version[] = "$VER: Version 42.2 (22.05.2011)\n";

static const char ERROR_HEADER[] = "Version";

#define TEMPLATE "NAME/M,MD5SUM/S,VERSION/N,REVISION/N,FILE/S,FULL/S,RES/S,ARCH/S"
struct
{
    CONST_STRPTR *arg_name;
    IPTR    arg_md5sum;
    LONG   *arg_version;
    LONG   *arg_revision;
    IPTR    arg_file;
    IPTR    arg_full;
    IPTR    arg_res;
    IPTR    arg_arch;
}
args;

LONG mversion, mrevision;

struct
{
    STRPTR pv_name;
    ULONG  pv_flags;
    LONG   pv_version;
    LONG   pv_revision;
    UWORD  pv_arch;
    UBYTE  pv_arm_cpu;
    UBYTE  pv_arm_fpu;
    //LONG   pv_days;
    STRPTR pv_vername;
    STRPTR pv_revname;
    STRPTR pv_datestr;
    STRPTR pv_extralf;
    STRPTR pv_extrastr;
    UBYTE  pv_md5sum[16];
}
parsedver = { NULL, 0, 0, 0, 0, -1, 0, NULL, NULL, NULL, NULL, NULL, {0}};

#define PVF_MD5SUM      (1 << 0)
#define PVF_NOVERSION   (1 << 1)

static
int makeverstring(CONST_STRPTR name);
static
void printverstring(void);
static
void freeverstring(void);
static
int makesysver(void);
static
int cmpargsparsed(void);


/**************************** support functions ************************/

/* Duplicate string, by given length or -1 for full length
 */
static
STRPTR dupstr(CONST_STRPTR buffer, LONG len)
{
    STRPTR ret = NULL;

    if (buffer)
    {
        if (len == -1)
            len = strlen(buffer);

        ret = AllocVec(len + 1, MEMF_ANY);
        if (ret)
        {
            CopyMem((STRPTR) buffer, ret, len);
            ret[len] = '\0';
        }
    }

    return ret;
}


static
inline int myisspace(int c)
{
    return (c == ' ' || c == '\t');
}


/* Return a pointer to a string, stripped by all leading whitespace characters
 * (SPACE, TAB).
 */
static
STRPTR skipwhites(CONST_STRPTR buffer)
{
    for (;; buffer++)
    {
        if (buffer[0] == '\0' || !isspace(buffer[0]))
        {
            return (STRPTR) buffer;
        }
    }
}


/* Return a pointer to a string, stripped by all leading space characters
 * (SPACE).
 */
static
STRPTR skipspaces(CONST_STRPTR buffer)
{
    for (;; buffer++)
    {
        if (buffer[0] == '\0' || buffer[0] != ' ')
        {
            return (STRPTR) buffer;
        }
    }
}


/* Strip all whitespace-characters from the end of a string. Note that the
 * buffer passed in will be modified!
 */
static
void stripwhites(STRPTR buffer)
{
    int len = strlen(buffer);

    while (len > 0)
    {
        if (!isspace(buffer[len-1]))
        {
            buffer[len] = '\0';
            return;
        }
        len--;
    }
    buffer[len] = '\0';
}


/* Searches for a given string in a file and stores up to *lenptr characters
 * into the buffer beginning with the first character after the given string.
 */
static
int findinfile(BPTR file, CONST_STRPTR string, STRPTR buffer, int *lenptr, unsigned char digest[16])
{
    int error = RETURN_OK;
    int buflen = *lenptr, len = 0, pos, stringlen;
    BOOL ready = FALSE;
    MD5_CTX md5ctx;
    STRPTR bufpos;
    STRPTR tmp;

    tmp = AllocMem(buflen, MEMF_PUBLIC);
    if (!tmp)
    {
        return RETURN_FAIL;
    }

    stringlen = strlen(string);
    *lenptr = -1;

    if (args.arg_md5sum)
    {
        MD5Init(&md5ctx);
    }

    bufpos = tmp;
    while ((len = Read(file, &tmp[len], buflen - len)) > 0)
    {
        pos = 0;

        if (args.arg_md5sum)
        {
            MD5Update(&md5ctx, bufpos, len);
        }

        if (ready)
        {
            /* If we get here we're scanning the rest of the file for md5sum. - Piru */
            len = 0;
        }
        else
        {
            while ((len - pos) >= stringlen)
            {
                /* Compare the current buffer position with the supplied string. */
                if (strncmp(&tmp[pos], string, stringlen) == 0)
                {
                    /* It is equal! Now move the rest of the buffer to the top of
                     * the buffer and fill it up.
                     */
                    int findstrlen = len - pos;

                    memcpy(buffer, &tmp[pos + stringlen], findstrlen);

                    len = Read(file, &buffer[findstrlen], buflen - findstrlen);
                    if (len >= 0)
                    {
                        if (args.arg_md5sum)
                        {
                            MD5Update(&md5ctx, &buffer[findstrlen], len);
                        }

                        *lenptr = findstrlen + len;
                    }
                    else
                    {
                        error = RETURN_FAIL;
                    }
                    ready = TRUE;
                    break;
                }
                pos++;
            }
            /* Move the rest of the buffer that could not be compared (because it
             * is smaller than the string to compare) to the top of the buffer.
             */
            if (!ready)
            {
                memmove(tmp, &tmp[len - stringlen], stringlen);
            }
            else
            {
                /* If we're not md5summing, stop file scanning now. - Piru */
                if (!args.arg_md5sum)
                {
                    break;
                }
            }
            len = stringlen;
        }

        bufpos = &tmp[len];
    }

    FreeMem(tmp, buflen);

    if (len == -1)
    {
        error = RETURN_FAIL;
    }

    if (args.arg_md5sum)
    {
        memset(digest, 0, 16);
        MD5Final(digest, &md5ctx);
    }

    return error;
}


/*************************** parsing functions *************************/

/* Convert a date in the form DD.MM.YY or DD.MM.YYYY into a numerical
 * value. Return FALSE, if buffer doesn't contain a valid date.
 */
static
BOOL makedatefromstring(CONST_STRPTR *bufptr)
{
    CONST_STRPTR buffer = *bufptr;
    struct DateTime dt;
    CONST_STRPTR headerstart, end;
    STRPTR newbuf;
    LONG res;
    int len, i;
    UBYTE c;

    //if (isspace(buffer[0]))
    //  buffer++;

    headerstart = buffer;

    buffer = strchr(buffer, '(');
    if (!buffer)
    {
        return FALSE;
    }
    buffer++;
    end = strchr(buffer, ')');
    if (!end)
    {
        return FALSE;
    }
    len = (int)(end - buffer);
    newbuf = dupstr(buffer, len);
    if (!newbuf)
    {
        return FALSE;
    }
    for (i = 0; i < len; i++)
    {
        c = newbuf[i];

        if (c == '.' || c == '/')
            newbuf[i] = '-';
        else if (!isalnum(c))
        {
            end = buffer + i;
            newbuf[i] = '\0';
            break;
        }
    }

    D(Printf("date: \"%s\"\n", newbuf));

    dt.dat_Format  = FORMAT_CDN;
    dt.dat_Flags   = 0;
    dt.dat_StrDay  = NULL;
    dt.dat_StrDate = newbuf;
    dt.dat_StrTime = NULL;
    res = StrToDate(&dt);
    if (!res)
    {
        dt.dat_Format  = FORMAT_DOS;
        res = StrToDate(&dt);
        if (!res)
        {
            //Printf("StrToDate failed!\n");
            FreeVec(newbuf);
            return FALSE;
        }
    }
    FreeVec(newbuf);

    //parsedver.pv_days = dt.dat_Stamp.ds_Days;

    parsedver.pv_datestr = AllocVec(buffer - headerstart + LEN_DATSTRING + 2, MEMF_ANY);
    if (!parsedver.pv_datestr)
    {
        return FALSE;
    }

    dt.dat_Stamp.ds_Minute = 0;
    dt.dat_Stamp.ds_Tick   = 0;

    dt.dat_StrDate = parsedver.pv_datestr + (buffer - headerstart);
    dt.dat_Format  = FORMAT_DEF;
    if (!DateToStr(&dt))
    {
        //Printf("DateToStr failed!\n");
        return FALSE;
    }

    CopyMem((STRPTR) headerstart, parsedver.pv_datestr, buffer - headerstart);
    res = strlen(parsedver.pv_datestr);
    parsedver.pv_datestr[res++] = ')';
    parsedver.pv_datestr[res] = '\0';

    *bufptr = end + 1;

    return TRUE;
}


/* Check whether the given string contains a version in the form
 * <version>.<revision> . If not return FALSE, otherwise fill in parsedver and
 * return TRUE.
 */
static
BOOL makeversionfromstring(CONST_STRPTR *bufptr)
{
    LONG pos, ver, rev;
    CONST_STRPTR buffer = *bufptr;
    CONST_STRPTR verstart, revstart;

    //Printf("makeversionfromstring: buffer \"%s\"\n", (LONG) buffer);

    /* Do version */

    verstart = buffer;
    pos = StrToLong((STRPTR) buffer, &ver);
    if (pos == -1)
    {
        return FALSE;
    }
    parsedver.pv_version  = ver;
    parsedver.pv_revision = -1;

    parsedver.pv_vername = dupstr(verstart, pos);
    if (!parsedver.pv_vername)
    {
        return FALSE;
    }

    /* Do revision */

    buffer += pos;
    revstart = buffer;
    buffer = skipspaces(buffer);  /* NOTE: skipspaces, not skipwhites! */
    if (*buffer != '.')
    {
        *bufptr = buffer;
        return TRUE;
    }

    buffer++;
    pos = StrToLong((STRPTR) buffer, &rev);
    if (pos == -1)
    {
        *bufptr = buffer;
        return TRUE;
    }

    parsedver.pv_revision = rev;

    /* calc the revision string len */
    pos = buffer + pos - revstart;
    parsedver.pv_revname = dupstr(revstart, pos);
    if (!parsedver.pv_revname)
    {
        return FALSE;
    }

    *bufptr = revstart + pos;

    return TRUE;
}

static const char *arm_cpus[] =
{
    "ARM Pre-v4",
    "ARMv4",
    "ARMv4T",
    "ARMv5T",
    "ARMv5TE",
    "ARMv5TEJ",
    "ARMv6",
    "ARMv6KZ",
    "ARMv6T2",
    "ARMv6K",
    "ARMv7",
    "ARMv6-M",
    "ARMv6S-M",
    "ARMv7E-M"
};

static const char *arm_fpus[] =
{
    "VFP",
    "VFPv2",
    "VFPv3",
    "VFPv3 (D0 - D15)",
    "VFPv4",
    "VFPv4 (D0 - D15)"
};

static
void printverstring(void)
{
    if (args.arg_md5sum)
    {
        if (parsedver.pv_flags & PVF_MD5SUM)
        {
            /* Endianess safe version */   
            Printf("%02lX%02lX%02lX%02lX"
                   "%02lX%02lX%02lX%02lX"
                   "%02lX%02lX%02lX%02lX"
                   "%02lX%02lX%02lX%02lX  ",
                   parsedver.pv_md5sum[0],
                   parsedver.pv_md5sum[1],
                   parsedver.pv_md5sum[2],
                   parsedver.pv_md5sum[3],
                   parsedver.pv_md5sum[4],
                   parsedver.pv_md5sum[5],
                   parsedver.pv_md5sum[6],
                   parsedver.pv_md5sum[7],
                   parsedver.pv_md5sum[8],
                   parsedver.pv_md5sum[9],
                   parsedver.pv_md5sum[10],
                   parsedver.pv_md5sum[11],
                   parsedver.pv_md5sum[12],
                   parsedver.pv_md5sum[13],
                   parsedver.pv_md5sum[14],
                   parsedver.pv_md5sum[15]);
        }
        else
        {
            /*     "01234567012345670123456701234567: " */
            PutStr("<no md5sum available>             ");
        }
    }

    if (parsedver.pv_flags & PVF_NOVERSION)
    {
        Printf("%s\n", (IPTR) parsedver.pv_name);
    }
    else
    {
        if (args.arg_full)
        {
            /* If md5sum output was there, avoid linefeed to allow parsing the output - Piru */
            if (args.arg_md5sum)
            {
                parsedver.pv_extralf = " ";
            }

            Printf("%s%s%s%s%s%s%s\n",
                   (IPTR) parsedver.pv_name, (IPTR) (*parsedver.pv_name ? " " : ""),
                   (IPTR) parsedver.pv_vername, (IPTR) parsedver.pv_revname,
                   (IPTR) (parsedver.pv_datestr ? (IPTR)parsedver.pv_datestr : (IPTR)""),
                   (IPTR) (parsedver.pv_extralf ? (IPTR)parsedver.pv_extralf : (IPTR)""),
                   (IPTR) (parsedver.pv_extrastr ? (IPTR)parsedver.pv_extrastr : (IPTR)""));
        }
        else
        {
            Printf("%s%s%s%s\n",
                   (IPTR) parsedver.pv_name, (IPTR) (*parsedver.pv_name ? " " : ""),
                   (IPTR) parsedver.pv_vername, (IPTR) parsedver.pv_revname);
        }
        
        if (args.arg_arch)
        {
            const char *arch;

            if (parsedver.pv_arch == EM_ARM)
            {
                Printf("Architecture: ");

                if (parsedver.pv_arm_cpu == (UBYTE)-1)
                    Printf("ARM (unspecified)");
                else if (parsedver.pv_arm_cpu <= ELF_CPU_ARMv7EM)
                    Printf(arm_cpus[parsedver.pv_arm_cpu]);
                else
                    Printf("Unknown ARM (%d)", parsedver.pv_arm_cpu);

                if (parsedver.pv_arm_fpu > 6)
                    Printf(" Unknown FPU (%d)", parsedver.pv_arm_fpu);
                else if (parsedver.pv_arm_fpu)
                    Printf(" %s", arm_fpus[parsedver.pv_arm_fpu]);

                Printf("\n");
            }
            else
            {
                switch (parsedver.pv_arch)
                {
                case 0:
                    /* No information available */
                    arch = NULL;
                    break;

                case EM_386:
                    arch = "I386";
                    break;

                case EM_68K:
                    arch = "M68k";
                    break;

                case EM_PPC:
                    arch = "PowerPC";
                    break;

                case EM_X86_64:
                    arch = "X86-64";
                    break;

                default:
                    arch = "Unknown";
                    break;    
                }

                if (arch)
                    Printf("Architecture: %s\n", arch);
            }
        }
    }
}


static
int makedata(CONST_STRPTR buffer, CONST_STRPTR ptr, int pos)
{
    D(Printf("makedata: buffer \"%s\" ptr \"%s\"\n", buffer, ptr));

    if (makeversionfromstring(&ptr))
    {
        CONST_STRPTR endp;
        BOOL doskip;

        /* It is! */
        /* Copy the program-name into a buffer. */
        parsedver.pv_name = dupstr(buffer, pos);
        if (!parsedver.pv_name)
        {
            PrintFault(ERROR_NO_FREE_STORE, (STRPTR) ERROR_HEADER);
            return RETURN_FAIL;
        }

        /* Now find the date */
        D(Printf("makedata: ptr #1: \"%s\"\n", ptr));
        doskip = strchr(ptr, '(') ? TRUE : FALSE;
        (void) makedatefromstring(&ptr);

        D(Printf("makedata: ptr #2: \"%s\"\n", ptr));
        if (doskip)
            ptr = skipspaces(ptr);  /* NOTE: not skipwhites! */
        for (endp = ptr; *endp != '\0' && *endp != '\r' && *endp != '\n'; endp++)
            ;
        pos = endp - ptr;
        if (pos)
        {
            parsedver.pv_extrastr = dupstr(ptr, pos);
            if (!parsedver.pv_extrastr)
            {
                PrintFault(ERROR_NO_FREE_STORE, (STRPTR) ERROR_HEADER);
                return RETURN_FAIL;
            }

            D(Printf("makedata: Extra string: %s\n", parsedver.pv_extrastr));
            if (doskip)
                parsedver.pv_extralf = "\n";
        }

        return 1;
    }

    return 0;
}


/* Retrieves version information from string. The data is stored in the
 * global struct parsedver.pv_
 */

static
int makedatafromstring(CONST_STRPTR buffer)
{
    int error = RETURN_OK;
    int pos = 0;
    LONG add, dummy;

    while (buffer[pos] && buffer[pos] != '\r' && buffer[pos] != '\n')
    {
        /* NOTE: Not isspace()! - Piru */
        if (myisspace(buffer[pos]) &&
            (add = StrToLong((STRPTR) buffer + pos + 1, &dummy)) != -1)
        {
            CONST_STRPTR ptr;

            /* Found something, which looks like a version. Now check, if it
             * really is.
             */

            D(Printf("makedatafromstring: buffer + %ld: \"%s\"\n", pos, buffer + pos));

            ptr = buffer + pos + 1;

            if (makedata(buffer, ptr, pos))
            {
                break;
            }
        }
        pos++;
    }

    if (!buffer[pos] || buffer[pos] == '\r' || buffer[pos] == '\n')
    {
        CONST_STRPTR endp;

        /* use the whatever is after ver tag as name */
        for (endp = buffer; *endp != '\0' && *endp != '\r' && *endp != '\n'; endp++)
            ;
        pos = endp - buffer;

        parsedver.pv_name = dupstr(buffer, pos);
        if (!parsedver.pv_name)
        {
            PrintFault(ERROR_NO_FREE_STORE, (STRPTR) ERROR_HEADER);
            return RETURN_FAIL;
        }
    }

    /* Strip any whitespaces from the tail of the program-name.
     */
    if (parsedver.pv_name)
    {
        stripwhites(parsedver.pv_name);
    }

    return error;
}


/* Case-insensitive FindResident()
 */
static
struct Resident *findresident(CONST_STRPTR name)
{
    struct Resident **rp;
    struct Resident *resident;

    rp = (struct Resident **) SysBase->ResModules;

    while ((resident = *rp++))
    {
#ifdef __mc68000__
        if (((LONG)resident) < 0)
        rp = (struct Resident **)((ULONG)resident & 0x7fffffff);
#else
        if (((IPTR)resident) & 0x01)
        rp = (struct Resident **)((IPTR)resident & ~1);
#endif
        else {
        if (!Stricmp(resident->rt_Name, (STRPTR) name))
            break;
        }
    }

    return resident;
}


/* Case-insensitive FindName()
 */
static
struct Node *findname(struct List *list, CONST_STRPTR name)
{
    struct Node *node;

    ForeachNode(list, node)
    {
        if (!Stricmp(node->ln_Name, (STRPTR) name))
        {
            return node;
        }
    }

    return NULL;
}


/* Retrieve information from resident modules. Returns 0 for success.
 */
static
int createresidentver(struct Resident *MyResident)
{
    STRPTR buffer = NULL;
    CONST_STRPTR name = NULL;
    STRPTR tmpbuffer;
    int pos = 0;
    int len = 0;
    BOOL foundver = FALSE;
    int error;

    if (MyResident->rt_IdString)
    {
        buffer = skipwhites(MyResident->rt_IdString);
        D(Printf("createresidentver: buffer \"%s\"\n", buffer));

        /* Locate version part */
        while (buffer[pos])
        {
            LONG dummy;

            /* NOTE: Not isspace()! - Piru */
            if (myisspace(buffer[pos]) &&
                StrToLong(buffer + pos + 1, &dummy) != -1)
            {
                buffer += pos;
                foundver = TRUE;
                break;
            }
            pos++;
        }
        D(Printf("createresidentver: buffer: \"%s\"\n", buffer));

        name = MyResident->rt_IdString;
        len = buffer - name;
    }

    /* If could not find any version info, use the resident rt_Name */
    if (!foundver)
        buffer = "";

    D(Printf("createresidentver: buffer: \"%s\"\n", buffer));

    if ((!args.arg_full) || (!name))
    {
        name = MyResident->rt_Name;
        len = strlen(MyResident->rt_Name);
    }

    tmpbuffer = AllocVec(len + strlen(buffer) + 1, MEMF_ANY);
    if (!tmpbuffer)
    {
        PrintFault(ERROR_NO_FREE_STORE, (STRPTR) ERROR_HEADER);
        return RETURN_FAIL;
    }
    CopyMem(name, tmpbuffer, len);
    strcpy(tmpbuffer + len, buffer);
    D(Printf("createresidentver: tmpbuffer: \"%s\"\n", tmpbuffer));

    error = makedatafromstring(tmpbuffer);

    FreeVec(tmpbuffer);

    return error;
}


/* Retrieve version information from library. Returns 0 for success.
 */
static
int createlibraryver(struct Library *MyLibrary)
{
    STRPTR buffer, tmpbuffer;
    int error, foundver = FALSE, pos;

    if (MyLibrary->lib_IdString)
    {
        //Printf("createlibraryver: lib_IdString \"%s\"\n", (LONG) MyLibrary->lib_IdString);
        buffer = skipwhites(MyLibrary->lib_IdString);

        //Printf("createlibraryver: buffer \"%s\"\n", (LONG) buffer);

        /* Find full 'ver.rev' version info
         */
        pos = 0;
        while (buffer[pos])
        {
            LONG dummy, add;

            /* NOTE: Not isspace()! - Piru */
            if (myisspace(buffer[pos]) &&
                (add = StrToLong(buffer + pos + 1, &dummy)) != -1 &&
                buffer[pos + 1 + add] == '.')
            {
                buffer += pos;
                pos = 0;
                foundver = TRUE;
                break;
            }
            pos++;
        }

        /* If could not find 'ver.rev', find any numeric */
        if (!foundver)
        {
            pos = 0;
            while (buffer[pos])
            {
                LONG dummy;

                /* NOTE: Not isspace()! - Piru */
                if (myisspace(buffer[pos]) &&
                    StrToLong(buffer + pos + 1, &dummy) != -1)
                {
                    buffer += pos;
                    pos = 0;
                    foundver = TRUE;
                    break;
                }
                pos++;
            }
        }
    }

    /* If could not find any version info, use the resident rt_Name */
    if (!foundver)
    {
        buffer = "";
        error = RETURN_WARN;
    }

    tmpbuffer = AllocVec(strlen(MyLibrary->lib_Node.ln_Name) + strlen(buffer) + 1, MEMF_ANY);
    if (!tmpbuffer)
    {
        PrintFault(ERROR_NO_FREE_STORE, (STRPTR) ERROR_HEADER);
        return RETURN_FAIL;
    }

    strcpy(tmpbuffer, MyLibrary->lib_Node.ln_Name);
    strcat(tmpbuffer, buffer);
    //Printf("createlibraryver: tmpbuffer: \"%s\"\n", (LONG) tmpbuffer);
    pos = makedatafromstring(tmpbuffer);
    if (pos > error)
    {
        error = pos;
    }

    FreeVec(tmpbuffer);

    return error;
}


/* Create default strings
 */
static
int createdefvers(CONST_STRPTR name)
{
    FreeVec(parsedver.pv_revname);
    FreeVec(parsedver.pv_vername);
    FreeVec(parsedver.pv_name);

    parsedver.pv_name    = dupstr(name, -1);
    parsedver.pv_vername = AllocVec(14, MEMF_ANY);
    parsedver.pv_revname = AllocVec(15, MEMF_ANY);

    if (parsedver.pv_name &&
        parsedver.pv_vername &&
        parsedver.pv_revname)
    {
        __sprintf(parsedver.pv_vername, "%ld", (long)parsedver.pv_version);
        __sprintf(parsedver.pv_revname, ".%ld", (long)parsedver.pv_revision);

        return RETURN_OK;
    }

    return RETURN_FAIL;
}


/* Create version info from named resident
 */
static
int makeresidentver(CONST_STRPTR name)
{
    struct Resident *MyResident;
    int error = -1;

    if ((MyResident = findresident(name)))
    {
        error = createresidentver(MyResident);
        if (error != RETURN_OK)
        {
            /* get values from residenttag */
            parsedver.pv_version  = MyResident->rt_Version;
            parsedver.pv_revision = -1;
            error = createdefvers(MyResident->rt_Name);
        }
    }

    return error;
}


/* Create version info from named list node
*/
static
int makeexeclistver(struct List *list, CONST_STRPTR name)
{
    struct Library *MyLibrary;
    int error = -1;

    Forbid();

    MyLibrary = (struct Library *) findname(list, name);
    if (MyLibrary)
    {
        /* get values from library */
        ULONG ver = MyLibrary->lib_Version;
        ULONG rev = MyLibrary->lib_Revision;

        error = createlibraryver(MyLibrary);
        if (error != RETURN_OK ||
            parsedver.pv_version != ver ||
            parsedver.pv_revision != rev)
        {
            /* special case where createlibraryrev was successful, but
             * version or revision don't match.
             */
            if (error == RETURN_OK)
            {
                /* If there is extrastr, make sure there's linefeed, too.
                 */
                if (parsedver.pv_extrastr)
                {
                    parsedver.pv_extralf = "\n";
                }
            }

            /* get values from library */
            parsedver.pv_version  = ver;
            parsedver.pv_revision = rev;

            error = createdefvers(MyLibrary->lib_Node.ln_Name);
        }
    }

    Permit();

    return error;
}


/* Find resident from seglist, return NULL if none found
*/
static
struct Resident *FindLibResident(BPTR   Segment)
{
    while (Segment)
    {
        IPTR        *MySegment;
        UWORD       *MyBuffer;
        UWORD       *EndBuffer;

        MySegment   = (IPTR*) BADDR(Segment);
        MyBuffer    = (UWORD*) &MySegment[1];
        EndBuffer   = (UWORD*) &MySegment[(MySegment[-1] - sizeof(ULONG) * 4) / sizeof(ULONG)];

        while (MyBuffer < EndBuffer)
        {
            struct Resident *MyResident;

            MyResident = (struct Resident*) MyBuffer;
            if (MyResident->rt_MatchWord == RTC_MATCHWORD &&
                MyResident->rt_MatchTag == MyResident)
            {
                return MyResident;
            }

            MyBuffer++;
        }

        Segment =(BPTR) MySegment[0];
    }

    SetIoErr(ERROR_OBJECT_NOT_FOUND);
    return NULL;
}


/* Find $VER: tag from seglist, return NULL if none found
   Returns dupstr()d string or NULL.
*/
static
STRPTR FindSegmentVER(BPTR  Segment)
{
    while (Segment)
    {
        void        *MySegment;
        CONST_STRPTR    MyBuffer;
        ULONG       BufferLen;
        CONST_STRPTR    EndBuffer;
        CONST_STRPTR    SegmentEnd;

        MySegment   = BADDR(Segment);
        MyBuffer    = (CONST_STRPTR) (MySegment + sizeof(BPTR));
        BufferLen   = *(ULONG *)(MySegment - sizeof(ULONG));
        SegmentEnd  = (CONST_STRPTR) (MySegment + (BufferLen - sizeof(BPTR)));
        EndBuffer   = SegmentEnd - 5;

        while (MyBuffer < EndBuffer)
        {
            if (MyBuffer[0] == '$' &&
                MyBuffer[1] == 'V' &&
                MyBuffer[2] == 'E' &&
                MyBuffer[3] == 'R' &&
                MyBuffer[4] == ':')
            {
                CONST_STRPTR EndPtr;

                MyBuffer += 5;
                /* Required because some smartass could end his $VER: tag
                 * without '\0' in the segment to save space. - Piru
                 */
                for (EndPtr = MyBuffer; EndPtr < SegmentEnd && *EndPtr; EndPtr++)
                    ;
                if (EndPtr - MyBuffer)
                {
                    return dupstr(MyBuffer, EndPtr - MyBuffer);
                }
            }

            MyBuffer++;
        }

        Segment =*(BPTR *)MySegment;
    }

    SetIoErr(ERROR_OBJECT_NOT_FOUND);
    return NULL;
}


/* Create version info from named device
*/
static
int makedevicever(CONST_STRPTR name)
{
    struct DevProc *MyDevProc;
    int error = -1;

    MyDevProc = GetDeviceProc((STRPTR) name, NULL);
    if (MyDevProc)
    {
        if (MyDevProc->dvp_DevNode->dol_Type == DLT_DEVICE)
        {
            BPTR SegList;

            SegList = MyDevProc->dvp_DevNode->dol_misc.dol_handler.dol_SegList;
            if (SegList)
            {
                struct Resident *MyResident;

                MyResident = FindLibResident(SegList);
                if (MyResident)
                {
                    error = createresidentver(MyResident);
                }
                else
                    error = RETURN_FAIL;
            }
        }
        FreeDeviceProc(MyDevProc);
    }

    if (error != RETURN_OK && error != -1)
    {
        Printf("Could not find version information for '%s'\n", name);
    }

    return error;
}

static int elf_read_block(BPTR file, ULONG offset, APTR buffer, ULONG size)
{
    if (Seek(file, offset, OFFSET_BEGINNING) < 0)
        return 0;

    return Read(file, buffer, size);
}

static void *load_block(BPTR file, ULONG offset, ULONG size)
{
    void *block = AllocMem(size, MEMF_ANY);

    if (block)
    {
        if (elf_read_block(file, offset, block, size) == size)
            return block;

        FreeMem(block, size);
    }

    return NULL;
}

static inline UWORD elf_read_word(UWORD data, struct elfheader *eh)
{
    switch (eh->ident[EI_DATA])
    {
    case ELFDATA2LSB:
        return AROS_LE2WORD(data);

    case ELFDATA2MSB:
        return AROS_BE2WORD(data);

    default:
        return 0;
    }
}

static inline ULONG elf_read_long(ULONG data, struct elfheader *eh)
{
    switch (eh->ident[EI_DATA])
    {
    case ELFDATA2LSB:
        return AROS_LE2LONG(data);

    case ELFDATA2MSB:
        return AROS_BE2LONG(data);

    default:
        return 0;
    }
}

static ULONG read_shnum(BPTR file, struct elfheader *eh)
{
    ULONG shnum = elf_read_word(eh->shnum, eh);

    /* the ELF header only uses 16 bits to store the count of section headers,
     * so it can't handle more than 65535 headers. if the count is 0, and an
     * offset is defined, then the real count can be found in the first
     * section header (which always exists).
     *
     * similarly, if the string table index is SHN_XINDEX, then the actual
     * index is found in the first section header also.
     *
     * see the System V ABI 2001-04-24 draft for more details.
     */
    if (shnum == 0)
    {
        struct sheader sh;
        ULONG shoff = elf_read_long(eh->shoff, eh);

        if (shoff == 0)
            return 0;

        if (elf_read_block(file, shoff, &sh, sizeof(sh)) != sizeof(sh))
            return 0;

        /* wider section header count is in the size field */
        shnum = elf_read_long(sh.size, eh);
    }

    return shnum;
}

static BOOL ARM_ParseAttrs(UBYTE *data, ULONG len, struct elfheader *eh)
{
    struct attrs_section *attrs;

    if (data[0] != ATTR_VERSION_CURRENT)
    {
        D(Printf("Unknown attributes version: 0x%02\n", data[0]));
        return FALSE;
    }

    attrs = (void *)data + 1;
    while (len > 0)
    {
        ULONG attrs_size = elf_read_long(attrs->size, eh);

        if (!strcmp(attrs->vendor, "aeabi"))
        {
            struct attrs_subsection *aeabi_attrs = (void *)attrs->vendor + 6;
            ULONG aeabi_len = attrs_size - 10;

            D(Printf("Found aeabi attributes @ 0x%p (length %u)\n", aeabi_attrs, aeabi_len));

            while (aeabi_len > 0)
            {
                ULONG aeabi_attrs_size = elf_read_long(aeabi_attrs->size, eh);

                if (aeabi_attrs->tag == Tag_File)
                {
                    UBYTE *file_subsection = (void *)aeabi_attrs + sizeof(struct attrs_subsection);
                    UBYTE file_len = aeabi_attrs_size - sizeof(struct attrs_subsection);

                    D(Printf("Found file-wide attributes @ 0x%p (length %u)\n", file_subsection, file_len));
                            
                    while (file_len > 0)
                    {
                        UBYTE tag, shift;
                        ULONG val = 0;

                        tag = *file_subsection++;
                        file_len--;

                        if (file_len == 0)
                        {
                            D(Printf("Mailformed attribute tag %d (no data)\n", tag));
                            return FALSE;
                        }

                        switch (tag)
                        {
                        case Tag_CPU_raw_name:
                        case Tag_CPU_name:
                        case Tag_compatibility:
                        case Tag_also_compatible_with:
                        case Tag_conformance:
                            /* These two are NULL-terminated strings. Just skip. */
                            while (file_len)
                            {
                                file_len--;
                                if (*file_subsection++ == 0)
                                    break;
                            }
                            break;

                        default:
                            /* Read ULEB128 value */
                            shift = 0;
                            while (file_len)
                            {
                                UBYTE byte;

                                byte = *file_subsection++;
                                file_len--;

                                val |= (byte & 0x7F) << shift;
                                if (!(byte & 0x80))
                                    break;

                                shift += 7;
                            }
                        }
                                
                        switch (tag)
                        {
                        case Tag_CPU_arch:
                            D(Printf("ARM CPU architecture set to %d\n", val));
                            parsedver.pv_arm_cpu = val;
                            break;

                        case Tag_FP_arch:
                            D(Printf("ARM FPU architecture set to %d\n", val));
                            parsedver.pv_arm_fpu = val;
                            break;
                        }
                    }

                    return TRUE;
                }
                aeabi_attrs = (void *)aeabi_attrs + aeabi_attrs_size;
                aeabi_len -= aeabi_attrs_size;
            }

            return FALSE;
        }
        attrs = (void *)attrs + attrs_size;
        len -= attrs_size;
    }
    return FALSE;
}

static int arm_read_cpudata(BPTR file, struct elfheader *eh)
{
    struct sheader *sh;
    ULONG int_shnum;
    ULONG shoff;
    UWORD shentsize;
    ULONG i;

    int_shnum = read_shnum(file, eh);
    if (!int_shnum)
        return 0;

    shoff     = elf_read_long(eh->shoff, eh);
    shentsize = elf_read_word(eh->shentsize, eh);

    /* load section headers */
    if (!(sh = load_block(file, shoff, int_shnum * shentsize)))
        return 0;

    for (i = 0; i < int_shnum; i++)
    {
        if (sh[i].type == SHT_ARM_ATTRIBUTES)
        {
            ULONG off = elf_read_long(sh[i].offset, eh);
            ULONG len = elf_read_long(sh[i].size, eh);
            void *data = load_block(file, off, len);

            D(Printf("ARM ATTRIBUTES section %d loaded at 0x%p\n", i, data));

            if (data)
            {
                ARM_ParseAttrs(data, len, eh);
                FreeMem(data, len);
            }
            break;
        }
    }

    FreeMem(sh, int_shnum * shentsize);

    return 1;
}


/* Retrieve version information from file. Return 0 for success.
 */
#define BUFFERSIZE (16384 + 1)
static
int makefilever(CONST_STRPTR name)
{
    BPTR file;
    int error; // = RETURN_OK;

    file = Open((STRPTR) name, MODE_OLDFILE);
    if (file)
    {
        UBYTE *buffer;

        buffer = AllocMem(BUFFERSIZE, MEMF_PUBLIC);
        if (buffer)
        {
            int len = BUFFERSIZE - 1;

            if (args.arg_arch)
            {
                ULONG len = Read(file, buffer, sizeof(struct elfheader));

                if (len == sizeof(struct elfheader))
                {
                    if (buffer[0] == 0x7f && buffer[1] == 'E' && buffer[2] == 'L' && buffer[3] == 'F')
                    {
                        /* It's a ELF file, read machine ID */
                        struct elfheader *eh = (struct elfheader *)buffer;

                        parsedver.pv_arch = elf_read_word(eh->machine, eh);
                        if (parsedver.pv_arch == EM_ARM)
                            arm_read_cpudata(file, eh);
                    }
                }
                else if (len >= 4)
                {
                    if (buffer[0] == 0 && buffer[1] == 0 && buffer[2] == 0x03 && buffer[3] == 0xF3)
                    {
                        /* It's AmigaOS hunk file. m68k obviously :) */
                        parsedver.pv_arch = EM_68K;
                    }
                }
                /* Rewind the file */
                Seek(file, 0, OFFSET_BEGINNING);
            }

            error = findinfile(file, "$VER:", buffer, &len, parsedver.pv_md5sum);
            if (error == RETURN_OK)
            {
                parsedver.pv_flags |= PVF_MD5SUM;

                if (len >= 0)
                {
                    STRPTR startbuffer;

                    buffer[len] = '\0';
                    startbuffer = skipwhites(buffer);

                    //Printf("startbuffer \"%s\"\n", startbuffer);
                    error = makedatafromstring(startbuffer);
                }
                else
                {
                    /* Try LoadSeg
                     */
                    error = RETURN_ERROR;

                    Close(file);

                    file = LoadSeg((STRPTR) name);
                    if (file)
                    {
                        struct Resident *MyResident;

                        MyResident = FindLibResident(file);
                        if (MyResident /*&&
                            (MyResident->rt_Type == NT_LIBRARY ||
                             MyResident->rt_Type == NT_DEVICE)*/)
                        {
                            error = createresidentver(MyResident);
                        }

                        UnLoadSeg(file);
                    }
                    file = BNULL;

                    if (error != RETURN_OK)
                    {
                        /* If user didn't ask for md5sum or we could not calculate it.
                        */
                        if (!args.arg_md5sum || (!(parsedver.pv_flags & PVF_MD5SUM)))
                        {
                            Printf("Could not find version information for '%s'\n", (IPTR) name);
                        }
                    }
                }
            }
            else
            {
                PrintFault(IoErr(), (STRPTR) ERROR_HEADER);
            }

            FreeMem(buffer, BUFFERSIZE);
        }
        else
        {
            error = RETURN_FAIL;
            PrintFault(IoErr(), (STRPTR) ERROR_HEADER);
        }

        if (file)
            Close(file);
    }
    else
    {
        LONG ioerr = IoErr();

        if (ioerr == ERROR_OBJECT_NOT_FOUND ||
            ioerr == ERROR_OBJECT_WRONG_TYPE)
        {
            error = -1;
        }
        else
        {
            PrintFault(IoErr(), (STRPTR) ERROR_HEADER);
            error = RETURN_FAIL;
        }
    }

    return error;
}


static
int makerescmdver(CONST_STRPTR name)
{
    int error = -1;
    struct Segment *segment;

    Forbid();

    segment = FindSegment((STRPTR) name, NULL, 0);
    if (!segment)
    {
        segment = FindSegment((STRPTR) name, NULL, 1);
    }

    if (segment)
    {
        if (segment->seg_UC == CMD_INTERNAL ||
            segment->seg_UC == CMD_DISABLED)
        {
            Permit();
            error = makeresidentver("shell");
            Forbid();
        }
        else
        {
            STRPTR buffer = FindSegmentVER(segment->seg_Seg);
            if (buffer)
            {
                STRPTR startbuffer;

                startbuffer = skipwhites(buffer);

                //Printf("startbuffer \"%s\"\n", (LONG) startbuffer);
                error = makedatafromstring(startbuffer);

                FreeVec(buffer);
            }
        }
    }

    Permit();

    return error;
}

static
int setvervar(CONST_STRPTR name, LONG ver, LONG rev)
{
    UBYTE buf[32];

    __sprintf(buf, "%ld.%ld", (long) ver, (long) rev);

    return SetVar((STRPTR) name, buf, -1, GVF_LOCAL_ONLY | LV_VAR) ? RETURN_OK : -1;
}


static
int makekickversion(void)
{
    parsedver.pv_version  = SysBase->LibNode.lib_Version;
    parsedver.pv_revision = SysBase->SoftVer;

    setvervar("Kickstart",
              parsedver.pv_version,
              parsedver.pv_revision);

    Printf("Kickstart %ld.%ld",
           (LONG) parsedver.pv_version, (LONG) parsedver.pv_revision);

    return RETURN_OK;
}


static
int makewbversion(void)
{
    int error = -1;
    struct Library *VersionBase;

    VersionBase = OpenLibrary("version.library", 0);
    if (VersionBase)
    {
        error = makeexeclistver(&SysBase->LibList, "version.library");

        if (error == RETURN_OK)
        {
            STRPTR newname = dupstr("Workbench", -1);
            if (newname)
            {
                FreeVec(parsedver.pv_name);
                parsedver.pv_name = newname;
            }
            setvervar("Workbench", parsedver.pv_version, parsedver.pv_revision);
        }

        CloseLibrary(VersionBase);
    }

    return error;
}


static
int makesysver(void)
{
    int error;

    error = makekickversion();
    if (error == RETURN_OK)
    {
        error = makewbversion();

        if (error == RETURN_OK)
        {
            PutStr(", ");
        }
        else
        {
            /* prevent silly errormsg if no version.library */
            PutStr("\n");
            error = RETURN_WARN;
        }
    }

    return error;
}


/* Determine, by which means to get the version-string.
 */
static
int makeverstring(CONST_STRPTR name)
{
    int error; // = RETURN_OK;
    BOOL volume = name[strlen(name) - 1] == ':';
    CONST_STRPTR filepart = FilePart(name);

    error = -1;

    if (!volume && !args.arg_file)
    {
        if (*filepart)
        {
            error = makeresidentver(filepart);
            if (error != RETURN_OK)
            {

                /* Try libraries
                 */
                error = makeexeclistver(&SysBase->LibList, filepart);
                if (error != RETURN_OK)
                {
                    STRPTR namebuf;
                    ULONG namelen = strlen(filepart);

                    /* 12 is "MOSSYS:LIBS/" */
                    if ((namebuf = AllocVec(12 + namelen + 4 + 1, MEMF_PUBLIC)))
                    {
                        strcpy(namebuf, "LIBS:");
                        strcat(namebuf, filepart);
                        error = makefilever(namebuf);

                        /* Try devices
                        */
                        if (error != RETURN_OK)
                        {
                            error = makeexeclistver(&SysBase->DeviceList, filepart);
                            if (error != RETURN_OK)
                            {
                                strcpy(namebuf, "DEVS:");
                                strcat(namebuf, filepart);
                                error = makefilever(namebuf);
                            }
                        }
                        FreeVec(namebuf);
                    }
                }
            }
        }
    }

    if (!args.arg_res && error == -1)
    {
        if (volume)
        {
            error = makedevicever(name);
        }
        else
        {
            if (*filepart)
            {
                error = makefilever(name);
            }
        }
    }

    if (!args.arg_file && error == -1)
    {
        error = makerescmdver(name);
    }

    if (error)
    {
        /* If user asked for md5sum, and we could calculate it, don't print error
         *  but the md5sum + file.
         */
        if (args.arg_md5sum && (parsedver.pv_flags & PVF_MD5SUM))
        {
            parsedver.pv_name = dupstr(name, -1);
            parsedver.pv_flags |= PVF_NOVERSION;
            error = RETURN_OK;
        }
    }

    if (error == -1)
    {
        PrintFault(ERROR_OBJECT_NOT_FOUND, (STRPTR) ERROR_HEADER);
        error = RETURN_FAIL;
    }

    return error;
}


static
void freeverstring(void)
{
    parsedver.pv_flags    = 0;
    parsedver.pv_version  = 0;
    parsedver.pv_revision = 0;

    FreeVec(parsedver.pv_extrastr);
    parsedver.pv_extrastr = NULL;
    parsedver.pv_extralf = NULL;
    FreeVec(parsedver.pv_datestr);
    parsedver.pv_datestr  = NULL;
    FreeVec(parsedver.pv_revname);
    parsedver.pv_revname  = NULL;
    FreeVec(parsedver.pv_vername);
    parsedver.pv_vername  = NULL;
    FreeVec(parsedver.pv_name);
    parsedver.pv_name     = NULL;
}

/* Compare the version given as argument with the version from the object.
 * Return RETURN_WARN, if args-v>object-v, otherwise return RETURN_OK.
 */
static
int cmpargsparsed(void)
{
    if (args.arg_version)
    {
        if (*(args.arg_version) > parsedver.pv_version)
        {
            return RETURN_WARN;
        }
        else if (*(args.arg_version) == parsedver.pv_version && args.arg_revision)
        {
            if (*(args.arg_revision) > parsedver.pv_revision)
            {
                return RETURN_WARN;
            }
        }
    }
    else if (args.arg_revision)
    {
        if (*(args.arg_revision) > parsedver.pv_revision)
        {
            return RETURN_WARN;
        }
    }
    return RETURN_OK;
}

/******************************* main program ****************************/

int __nocommandline;

int main (void)
{
    LONG error = RETURN_FAIL;

    struct RDArgs *rda;

    rda = ReadArgs(TEMPLATE, (IPTR *) &args, NULL);
    if (rda)
    {
        if (!args.arg_name || !*args.arg_name)
        {
            /* No args, make system version */
            error = makesysver();
            if (error == RETURN_OK)
            {
                printverstring();
                    if (parsedver.pv_flags & PVF_NOVERSION)
                {
                    error = RETURN_FAIL;
                }
                if (error == RETURN_OK)
                {
                    error = cmpargsparsed();
                }
            }
            freeverstring();
        }
        else
        {
            CONST_STRPTR *name;
            BOOL multifile;
#if 1
            /* Workaround for:
             * version file ver
             * version file ver rev
             */
            if (!args.arg_version && !args.arg_revision)
            {
                LONG narg = 1;
                while (args.arg_name[narg]) { narg++; }
                if (narg == 2 || narg == 3)
                {
                    if (StrToLong(args.arg_name[1], &mversion) > 0)
                    {
                        args.arg_version = &mversion;
                            args.arg_name[1] = args.arg_name[2];
                        if (narg == 3)
                        {
                            args.arg_name[2] = NULL;
                        }
                            if (narg == 3)
                        {
                            if (StrToLong(args.arg_name[1], &mrevision) > 0)
                            {
                                args.arg_revision = &mrevision;
                                args.arg_name[1] = NULL;
                            }
                        }
                    }
                }
            }
#endif
            multifile = args.arg_name[1] != NULL;

            for (name = args.arg_name; *name; name++)
            {
                error = makeverstring(*name);
                if (error == RETURN_OK)
                {
                    printverstring();

                    if (!multifile)
                    {
                        /* Single args, do compare stuff also */
                        if (parsedver.pv_flags & PVF_NOVERSION)
                        {
                            error = RETURN_FAIL;
                        }
                        if (error == RETURN_OK)
                        {
                            error = cmpargsparsed();
                        }
                    }
                }
                freeverstring();

            }
        }

        FreeArgs(rda);
    }
    else
    {
        PrintFault(IoErr(), (STRPTR) ERROR_HEADER);
        error = RETURN_FAIL;
    }

        RT_Exit();

        return(error);
}