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XADMaster/libxad/protection.c

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#ifndef XADMASTER_PROTECTION_C
#define XADMASTER_PROTECTION_C
/* $Id: protection.c,v 1.6 2005/06/23 14:54:37 stoecker Exp $
protection bit conversion
XAD library system for archive handling
Copyright (C) 1998 and later by Dirk Stöcker <soft@dstoecker.de>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "include/functions.h"
/* Other Unix information bits */
#define UP_IFMT 00170000
#define UP_IFSOCK 0140000
#define UP_IFLNK 0120000
#define UP_IFREG 0100000
#define UP_IFBLK 0060000
#define UP_IFDIR 0040000
#define UP_IFCHR 0020000
#define UP_IFIFO 0010000
#define UP_ISLNK(m) (((m) & UP_IFMT) == UP_IFLNK)
#define UP_ISREG(m) (((m) & UP_IFMT) == UP_IFREG)
#define UP_ISDIR(m) (((m) & UP_IFMT) == UP_IFDIR)
#define UP_ISCHR(m) (((m) & UP_IFMT) == UP_IFCHR)
#define UP_ISBLK(m) (((m) & UP_IFMT) == UP_IFBLK)
#define UP_ISFIFO(m) (((m) & UP_IFMT) == UP_IFIFO)
#define UP_ISSOCK(m) (((m) & UP_IFMT) == UP_IFSOCK)
#define UP_IFUID (1<<11)
#define UP_IFGID (1<<10)
#define UP_IFVTX (1<<9)
/* File permissions */
#define UP_UREAD (1<<8) /* Read by owner */
#define UP_UWRITE (1<<7) /* Write by owner */
#define UP_UEXEC (1<<6) /* Execute/search by owner */
#define UP_GREAD (1<<5) /* Read by group */
#define UP_GWRITE (1<<4) /* Write by group */
#define UP_GEXEC (1<<3) /* Execute/search by group */
#define UP_OREAD (1<<2) /* Read by other */
#define UP_OWRITE (1<<1) /* Write by other */
#define UP_OEXEC (1<<0) /* Execute/search by other */
#define MP_READONLY (1<<0)
#define MP_HIDDEN (1<<1)
#define MP_SYSTEM (1<<2)
#define MP_VOLUMENAME (1<<3) /* filesystem private */
#define MP_DIRECTORY (1<<4) /* filesystem private */
#define MP_ARCHIVE (1<<5)
#define AMIG_DELETE (1<<0) /* prevent file from being deleted */
#define AMIG_EXECUTE (1<<1) /* ignored by system, used by Shell */
#define AMIG_WRITE (1<<2) /* ignored by old filesystem */
#define AMIG_READ (1<<3) /* ignored by old filesystem */
#define AMIG_ARCHIVE (1<<4) /* cleared whenever file is changed */
#define AMIG_PURE (1<<5) /* program is reentrant and rexecutable */
#define AMIG_SCRIPT (1<<6) /* program is a script (execute) file */
#define AMIG_HOLD (1<<7)
#define AMIG_GRP_DELETE (1<<8) /* Group: prevent file from being deleted */
#define AMIG_GRP_EXECUTE (1<<9) /* Group: file is executable */
#define AMIG_GRP_WRITE (1<<10) /* Group: file is writable */
#define AMIG_GRP_READ (1<<11) /* Group: file is readable */
#define AMIG_OTR_DELETE (1<<12) /* Other: prevent file from being deleted */
#define AMIG_OTR_EXECUTE (1<<13) /* Other: file is executable */
#define AMIG_OTR_WRITE (1<<14) /* Other: file is writable */
#define AMIG_OTR_READ (1<<15) /* Other: file is readable */
#define UNIXPROT (AMIG_READ|AMIG_WRITE|AMIG_EXECUTE|AMIG_GRP_READ|AMIG_GRP_WRITE| \
AMIG_GRP_EXECUTE|AMIG_OTR_READ|AMIG_OTR_WRITE|AMIG_OTR_EXECUTE)
#define MSDOSPROT (AMIG_READ|AMIG_WRITE|AMIG_ARCHIVE|AMIG_DELETE)
#define REVUNIXPROT (UP_UREAD|UP_UWRITE|UP_UEXEC|UP_GREAD|UP_GWRITE|UP_GEXEC| \
UP_OREAD|UP_OWRITE|UP_OEXEC)
#define REVMSDOSPROT (MP_READONLY|MP_ARCHIVE)
FUNCxadConvertProtection /* xadTAGPTR tags */
{
xadUINT32 prot = 0, flags = 0, numres = 0;
xadUINT8 dosprot = 0;
xadUINT16 unxprot = 0;
xadERROR res = XADERR_OK;
xadTAGPTR ti, ti2 = tags;
struct xadFileInfo *fi;
#ifdef DEBUG
DebugTagList("xadConvertProtectionA", tags);
#endif
while((ti = NextTagItem(&ti2)))
{
switch(ti->ti_Tag)
{
case XAD_PROTAMIGA: prot = (xadUINT32)ti->ti_Data; break;
case XAD_PROTUNIX: unxprot = ti->ti_Data; flags |= XADFIF_UNIXPROTECTION;
/* kill old settings of supported bits */
prot &= ~UNIXPROT;
if(!(unxprot & UP_UREAD)) prot |= AMIG_READ;
if(!(unxprot & UP_UWRITE)) prot |= AMIG_WRITE|AMIG_DELETE;
if(!(unxprot & UP_UEXEC)) prot |= AMIG_EXECUTE;
if(unxprot & UP_GREAD) prot |= AMIG_GRP_READ;
if(unxprot & UP_GWRITE) prot |= AMIG_GRP_WRITE|AMIG_GRP_DELETE;
if(unxprot & UP_GEXEC) prot |= AMIG_GRP_EXECUTE;
if(unxprot & UP_OREAD) prot |= AMIG_OTR_READ;
if(unxprot & UP_OWRITE) prot |= AMIG_OTR_WRITE|AMIG_OTR_DELETE;
if(unxprot & UP_OEXEC) prot |= AMIG_OTR_EXECUTE;
break;
case XAD_PROTMSDOS: dosprot = ti->ti_Data; flags |= XADFIF_DOSPROTECTION;
/* kill old settings of supported bits */
prot &= ~MSDOSPROT;
if(dosprot & MP_READONLY) prot |= AMIG_WRITE|AMIG_DELETE;
/* if(dosprot & MP_HIDDEN) prot |= AMIG_HOLD; */
if(!(dosprot & MP_ARCHIVE)) prot |= AMIG_ARCHIVE;
break;
case XAD_PROTFILEINFO: fi = (struct xadFileInfo *)(uintptr_t) ti->ti_Data;
prot = fi->xfi_Protection;
if(fi->xfi_Flags & XADFIF_DOSPROTECTION)
{
flags |= XADFIF_DOSPROTECTION;
dosprot = fi->xfi_DosProtect & ~(MP_DIRECTORY);
if(fi->xfi_Flags & XADFIF_DIRECTORY)
dosprot |= MP_DIRECTORY;
}
if(fi->xfi_Flags & XADFIF_UNIXPROTECTION)
{
flags |= XADFIF_UNIXPROTECTION;
unxprot = fi->xfi_UnixProtect;
if(UP_ISDIR(unxprot) || UP_ISLNK(unxprot))
unxprot &= ~(UP_IFMT);
if(fi->xfi_Flags & XADFIF_DIRECTORY)
unxprot |= UP_IFDIR;
if(fi->xfi_Flags & XADFIF_LINK)
unxprot |= UP_IFLNK;
}
break;
}
}
/* make dos protection */
dosprot &= ~REVMSDOSPROT;
if(prot & AMIG_WRITE) dosprot |= MP_READONLY;
/* if(prot & AMIG_HOLD) dosprot |= MP_HIDDEN; */
if(!(prot & AMIG_ARCHIVE)) dosprot |= MP_ARCHIVE;
/* make unix protection */
unxprot &= ~REVUNIXPROT;
if(!(prot & AMIG_READ)) unxprot |= UP_UREAD;
if(!(prot & AMIG_WRITE)) unxprot |= UP_UWRITE;
if(!(prot & AMIG_EXECUTE)) unxprot |= UP_UEXEC;
if(prot & AMIG_GRP_READ) unxprot |= UP_GREAD;
if(prot & AMIG_GRP_WRITE) unxprot |= UP_GWRITE;
if(prot & AMIG_GRP_EXECUTE) unxprot |= UP_GEXEC;
if(prot & AMIG_OTR_READ) unxprot |= UP_OREAD;
if(prot & AMIG_OTR_WRITE) unxprot |= UP_OWRITE;
if(prot & AMIG_OTR_EXECUTE) unxprot |= UP_OEXEC;
ti2 = tags;
while((ti = NextTagItem(&ti2)))
{
switch(ti->ti_Tag)
{
case XAD_GETPROTAMIGA:
if(!ti->ti_Data) res = XADERR_BADPARAMS;
else
{
*((xadUINT32 *)(uintptr_t) ti->ti_Data) = prot; ++numres;
}
break;
case XAD_GETPROTUNIX:
if(!ti->ti_Data) res = XADERR_BADPARAMS;
else
{
*((xadUINT32 *)(uintptr_t) ti->ti_Data) = unxprot; ++numres;
}
break;
case XAD_GETPROTMSDOS:
if(!ti->ti_Data) res = XADERR_BADPARAMS;
else
{
*((xadUINT32 *)(uintptr_t) ti->ti_Data) = dosprot; ++numres;
}
break;
case XAD_GETPROTFILEINFO:
if(!ti->ti_Data) res = XADERR_BADPARAMS;
else
{
fi = (struct xadFileInfo *)(uintptr_t) ti->ti_Data; ++numres;
fi->xfi_Flags |= flags;
fi->xfi_Protection = prot;
fi->xfi_UnixProtect = unxprot;
fi->xfi_DosProtect = dosprot;
}
break;
}
}
return numres ? res : XADERR_BADPARAMS;
}
ENDFUNC
#endif /* XADMASTER_PROTECTION_C */
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