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path: root/support/dktools/dk4filei8.c
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/*
	WARNING: This file was generated by dkct.
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4filei8.ctr
*/

/*
Copyright (C) 2015-2017, Dirk Krause

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
  to endorse or promote products derived from this software without specific
  prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**	@file dk4filei8.c The dk4filei8 module.
*/


#line 10 "dk4filei8.ctr"

#include "dk4filei.h"

#ifndef DK4MEM_H_INCLUDED
#include "dk4mem.h"
#endif

#ifndef DK4STAT8_H_INCLUDED
#include "dk4stat8.h"
#endif

#ifndef DK4ERROR_H_INCLUDED
#include "dk4error.h"
#endif


int
dk4fileinfo_c8(dk4_file_info_t *dptr, const char *fn, dk4_er_t *erp)
{
  dk4_er_t	 	er;
#if DK4_ON_WINDOWS
  WIN32_FIND_DATAA	ffdata;
  HANDLE	 	ha;
  DWORD			dwatt;
  int		 	i;
  int		 	found;
  int			isdir;
#endif
  int		 	back = 0;
  if ((NULL != dptr) && (NULL != fn)) {
    dk4error_init(&er);
    DK4_MEMRES(dptr, sizeof(dk4_file_info_t));
    dptr->contents = 0;
#if DK4_ON_WINDOWS
    dptr->rppnt = (DWORD)0UL;
    dptr->fattr = GetFileAttributesA(fn);
    dptr->resio = 0UL;
    if (INVALID_FILE_ATTRIBUTES == dptr->fattr) {
      ha = FindFirstFileA(fn, &ffdata);
      if (INVALID_HANDLE_VALUE != ha) {
        dptr->fattr = ffdata.dwFileAttributes;
        FindClose(ha);
      }
    }
    if (INVALID_FILE_ATTRIBUTES != dptr->fattr) {
      isdir = 0;
      if (0 != (FILE_ATTRIBUTE_DIRECTORY & (dptr->fattr))) { isdir = 1; }
      /* Symlink */
      found = 0;
      for (i = 0; ((3 > i) && (0 == found)); i++) {
        dwatt =  dptr->fattr;
	dwatt |= FILE_FLAG_OPEN_REPARSE_POINT;
	if (0 != isdir) { dwatt |= FILE_FLAG_BACKUP_SEMANTICS; }
        ha = CreateFileA(
          fn,
	  (
	    (0 == i)
	    ? (0) : ((1 == i) ? (FILE_READ_ATTRIBUTES) : (GENERIC_READ))
	  ),
	  (FILE_SHARE_READ | FILE_SHARE_WRITE),
	  NULL,
	  OPEN_EXISTING,
	  dwatt,
	  NULL
        );
        if (INVALID_HANDLE_VALUE != ha) {
          if (GetFileInformationByHandle(ha, &(dptr->linfo))) {
	    found = 1;
	    back = 1;
            dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_LINK;
	  } else {
	    if (1 == i) {
	      dk4error_set_ldetails(
	        &er, DK4_E_FILE_INFORMATION_FAILED,
	        (long)((unsigned long)GetLastError())
	      );
	    }
	  }
	  CloseHandle(ha);
        } else {
          if (1 == i) {
	    dk4error_set_ldetails(
	      &er, DK4_E_CREATE_FILE_FAILED,
	      (long)((unsigned long)GetLastError())
	    );
	  }
        }
      }
      /* Target */
      found = 0;
      for (i = 0; ((3 > i) && (0 == found)); i++) {
        dwatt =  dptr->fattr;
	if (0 != isdir) { dwatt |= FILE_FLAG_BACKUP_SEMANTICS; }
        ha = CreateFileA(
          fn,
	  (
	    (0 == i)
	    ? (0)
	    : ((1 == i) ? (FILE_READ_ATTRIBUTES) : (GENERIC_READ))
	  ),
	  (FILE_SHARE_READ | FILE_SHARE_WRITE),
	  NULL,
	  OPEN_EXISTING,
	  dwatt,
	  NULL
        );
        if (INVALID_HANDLE_VALUE != ha) {
          if (GetFileInformationByHandle(ha, &(dptr->tinfo))) {
	    found = 1;
	    back = 1;
            dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_TARGET;
	  } else {
	    if (1 == i) {
	      dk4error_set_ldetails(
	        &er, DK4_E_FILE_INFORMATION_FAILED,
	        (long)((unsigned long)GetLastError())
	      );
	    }
	  }
	  CloseHandle(ha);
        } else {
          if (1 == i) {
	    dk4error_set_ldetails(
	      &er, DK4_E_CREATE_FILE_FAILED,
	      (long)((unsigned long)GetLastError())
	    );
	  }
        }
      }
      /* FindFirstFile */
      if (0 != back) {
        ha = FindFirstFileA(fn, &ffdata);
        if (INVALID_HANDLE_VALUE != ha) {
          back = 1;
	  dptr->fattr = ffdata.dwFileAttributes;
	  dptr->rppnt = ffdata.dwReserved0;
          FindClose(ha);
        }
      } else {
        ha = FindFirstFileA(fn, &ffdata);
	if (INVALID_HANDLE_VALUE != ha) {
	  back = 1;
	  dptr->fattr = ffdata.dwFileAttributes;
	  dptr->rppnt = ffdata.dwReserved0;
	  dptr->resio = 1UL;
	  (dptr->linfo).dwFileAttributes = ffdata.dwFileAttributes;
	  (dptr->linfo).ftCreationTime = ffdata.ftCreationTime;
	  (dptr->linfo).ftLastAccessTime = ffdata.ftLastAccessTime;
	  (dptr->linfo).ftLastWriteTime = ffdata.ftLastWriteTime;
	  (dptr->linfo).nFileSizeHigh = ffdata.nFileSizeHigh;
	  (dptr->linfo).nFileSizeLow = ffdata.nFileSizeLow;
	  (dptr->tinfo).dwFileAttributes = ffdata.dwFileAttributes;
	  (dptr->tinfo).ftCreationTime = ffdata.ftCreationTime;
	  (dptr->tinfo).ftLastAccessTime = ffdata.ftLastAccessTime;
	  (dptr->tinfo).ftLastWriteTime = ffdata.ftLastWriteTime;
	  (dptr->tinfo).nFileSizeHigh = ffdata.nFileSizeHigh;
	  (dptr->tinfo).nFileSizeLow = ffdata.nFileSizeLow;
          dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_TARGET;
	  dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_LINK;
	  FindClose(ha);
	}
      }
    } else {
      dk4error_set_ldetails(
        &er, DK4_E_SYSTEM,
	(long)((unsigned long)GetLastError())
      );
    }
#else
    if (0 != dk4stat_l_c8(&(dptr->lstb), fn, &er)) {
      back = 1;
      dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_LINK;
    }
    if (0 != dk4stat_c8(&(dptr->tstb), fn, &er)) {
      back = 1;
      dptr->contents |= DK4_FILE_INFO_CONTENTS_DATA_TARGET;
    }
#endif
    if (0 == back) {
      dk4error_copy(erp, &er);
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return  back;
}