Coverage Report

Created: 2024-07-27 06:27

/src/libtiff/libtiff/tif_close.c
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Source (jump to first uncovered line)
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/*
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 * Copyright (c) 1988-1997 Sam Leffler
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 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
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 *
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 * Permission to use, copy, modify, distribute, and sell this software and
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 * its documentation for any purpose is hereby granted without fee, provided
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 * that (i) the above copyright notices and this permission notice appear in
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 * all copies of the software and related documentation, and (ii) the names of
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 * Sam Leffler and Silicon Graphics may not be used in any advertising or
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 * publicity relating to the software without the specific, prior written
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 * permission of Sam Leffler and Silicon Graphics.
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 *
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 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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 *
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 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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 * OF THIS SOFTWARE.
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 */
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/*
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 * TIFF Library.
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 */
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#include "tiffiop.h"
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#include <string.h>
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/************************************************************************/
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/*                            TIFFCleanup()                             */
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/************************************************************************/
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/**
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 * Auxiliary function to free the TIFF structure. Given structure will be
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 * completely freed, so you should save opened file handle and pointer
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 * to the close procedure in external variables before calling
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 * _TIFFCleanup(), if you will need these ones to close the file.
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 *
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 * @param tif A TIFF pointer.
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 */
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void TIFFCleanup(TIFF *tif)
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0
{
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    /*
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     * Flush buffered data and directory (if dirty).
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     */
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    if (tif->tif_mode != O_RDONLY)
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        TIFFFlush(tif);
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    (*tif->tif_cleanup)(tif);
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    TIFFFreeDirectory(tif);
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    _TIFFCleanupIFDOffsetAndNumberMaps(tif);
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    /*
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     * Clean up client info links.
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     */
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    while (tif->tif_clientinfo)
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0
    {
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        TIFFClientInfoLink *psLink = tif->tif_clientinfo;
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        tif->tif_clientinfo = psLink->next;
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        _TIFFfreeExt(tif, psLink->name);
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        _TIFFfreeExt(tif, psLink);
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    }
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    if (tif->tif_rawdata && (tif->tif_flags & TIFF_MYBUFFER))
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        _TIFFfreeExt(tif, tif->tif_rawdata);
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    if (isMapped(tif))
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        TIFFUnmapFileContents(tif, tif->tif_base, (toff_t)tif->tif_size);
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    /*
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     * Clean up custom fields.
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     */
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    if (tif->tif_fields && tif->tif_nfields > 0)
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    {
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        uint32_t i;
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        for (i = 0; i < tif->tif_nfields; i++)
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0
        {
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            TIFFField *fld = tif->tif_fields[i];
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            if (fld->field_name != NULL)
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            {
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0
                if (fld->field_bit == FIELD_CUSTOM &&
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                    /* caution: tif_fields[i] must not be the beginning of a
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                     * fields-array. Otherwise the following tags are also freed
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                     * with the first free().
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                     */
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                    TIFFFieldIsAnonymous(fld))
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                {
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                    _TIFFfreeExt(tif, fld->field_name);
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                    _TIFFfreeExt(tif, fld);
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                }
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            }
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        }
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        _TIFFfreeExt(tif, tif->tif_fields);
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    }
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    if (tif->tif_nfieldscompat > 0)
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    {
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        uint32_t i;
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        for (i = 0; i < tif->tif_nfieldscompat; i++)
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        {
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            if (tif->tif_fieldscompat[i].allocated_size)
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                _TIFFfreeExt(tif, tif->tif_fieldscompat[i].fields);
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        }
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        _TIFFfreeExt(tif, tif->tif_fieldscompat);
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    }
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    if (tif->tif_cur_cumulated_mem_alloc != 0)
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    {
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        TIFFErrorExtR(tif, "TIFFCleanup",
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                      "tif_cur_cumulated_mem_alloc = %" PRIu64 " whereas it "
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                      "should be 0",
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                      (uint64_t)tif->tif_cur_cumulated_mem_alloc);
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    }
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    _TIFFfreeExt(NULL, tif);
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}
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/************************************************************************/
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/*                    _TIFFCleanupIFDOffsetAndNumberMaps()              */
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/************************************************************************/
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void _TIFFCleanupIFDOffsetAndNumberMaps(TIFF *tif)
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{
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    if (tif->tif_map_dir_offset_to_number)
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    {
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        TIFFHashSetDestroy(tif->tif_map_dir_offset_to_number);
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        tif->tif_map_dir_offset_to_number = NULL;
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    }
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    if (tif->tif_map_dir_number_to_offset)
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    {
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        TIFFHashSetDestroy(tif->tif_map_dir_number_to_offset);
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        tif->tif_map_dir_number_to_offset = NULL;
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    }
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}
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/************************************************************************/
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/*                            TIFFClose()                               */
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/************************************************************************/
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/**
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 * Close a previously opened TIFF file.
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 *
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 * TIFFClose closes a file that was previously opened with TIFFOpen().
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 * Any buffered data are flushed to the file, including the contents of
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 * the current directory (if modified); and all resources are reclaimed.
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 *
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 * @param tif A TIFF pointer.
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 */
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void TIFFClose(TIFF *tif)
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{
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    if (tif != NULL)
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    {
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        TIFFCloseProc closeproc = tif->tif_closeproc;
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        thandle_t fd = tif->tif_clientdata;
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        TIFFCleanup(tif);
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        (void)(*closeproc)(fd);
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    }
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0
}