[svn-r23696] Description:

    Bring r23695 from trunk to 1.8 branch:

Clean up warnings in H5Tconv.c (down to _only_ 9000 lines of output now!)

Merge changes from Coverity branch back to trunk:

r20684:
Fix for coverity bug #1721 which was due to the fix for coverity bug #943.

r20685:
Use HDstrncpy. --gh

r20761:
Purpose: Fix valgrind issues

Description:
Free image_data and data as appropriate in test_image.

r20762:
Purpose: Fix coverity issue 600

Description:
Add check for return value of H5O_close in H5Ocopy.  Also cleaned up various
warnings.

r20763:
Purpose: Fix valgrind issues with h5stat

Description:
Modified h5stat to free "iter" before exit, and free "hand" before exit if
parse_command_line exits directly.

r20764:
fixed coverity issues:
69, 327, 614, 684, 685, 696, 697, 1681, 967, 826, 660, 80

r20765:
Fixed coverity bug 668

Pulled x * y * z multiply out of malloc operand into a separate n_elements variable to quiet integer overflow warning.

No actual integer overflow tests are performed since it's just a test program but I did add a check that n_elements is >= 1.

I also changed an error condition from doing its own close and returning -1 to "goto out;" like the rest of the program.

r20766:
Fixed coverity bug 667

Pulled x * y * z multiply out of malloc operand into a separate n_elements variable to quiet integer overflow warning.

No actual integer overflow tests are performed since it's just a test program.


Tested on:
    Mac OSX/64 10.8.3 (amazon) w/C++ & FORTRAN
    (h5committest upcoming)

1 files changed, 124 insertions, 68 deletions

diff --git a/hl/test/test_image.c b/hl/test/test_image.c
index 7740a4d..5c0c7ca 100644
--- a/hl/test/test_image.c
+++ b/hl/test/test_image.c
@@ -100,24 +100,34 @@ static int test_simple(void)
     hssize_t      npals;
 
     /* 8-bit image */
-    unsigned char buf1 [ WIDTH*HEIGHT ];
+    unsigned char *buf1 = NULL;
     unsigned char pal[ PAL_ENTRIES * 3 ];        /* palette array */
     hsize_t       pal_dims[2] = {PAL_ENTRIES,3}; /* palette dimensions */
 
     /* 24-bit image */
-    unsigned char buf2 [ WIDTH*HEIGHT*3 ];
+    unsigned char *buf2 = NULL;
 
     /* read data */
-    unsigned char buf1_out [ WIDTH*HEIGHT ];
-    unsigned char buf2_out [ WIDTH*HEIGHT*3 ];
+    unsigned char *buf1_out = NULL;
+    unsigned char *buf2_out = NULL;
     unsigned char pal_out[ PAL_ENTRIES * 3 ];    /* palette array */
     hsize_t       pal_dims_out[2];               /* palette dimensions */
 
+    /* Allocate image buffers */
+    buf1 = (unsigned char *)HDmalloc(WIDTH * HEIGHT);
+    HDassert(buf1);
+    buf2  = (unsigned char *)HDmalloc(WIDTH * HEIGHT * 3);
+    HDassert(buf2);
+    buf1_out = (unsigned char *)HDmalloc(WIDTH * HEIGHT);
+    HDassert(buf1_out);
+    buf2_out  = (unsigned char *)HDmalloc(WIDTH * HEIGHT * 3);
+    HDassert(buf2_out);
+
     /* create an image */
     space = WIDTH*HEIGHT / PAL_ENTRIES;
     for (i=0, j=0, n=0; i < WIDTH*HEIGHT; i++, j++ )
     {
-        buf1[i] = n;
+        buf1[i] = (unsigned char)n;
         if ( j > space )
         {
             n++;
@@ -126,17 +136,13 @@ static int test_simple(void)
 
     }
 
-
     /* create an image */
     space = WIDTH*HEIGHT / 256;
     for (i=0, j=0, n=0; i < WIDTH*HEIGHT*3; i+=3, j++ )
     {
-        unsigned char r, g, b;
-
-        r = n; g = 0; b = 255-n;
-        buf2[i]   = r;
-        buf2[i+1] = g;
-        buf2[i+2] = b;
+        buf2[i]   = (unsigned char)n;
+        buf2[i+1] = 0;
+        buf2[i+2] = (unsigned char)(255 - n);
         if ( j > space )
         {
             n++;
@@ -150,9 +156,9 @@ static int test_simple(void)
     */
     for ( i=0, n=0; i<PAL_ENTRIES*3; i+=3, n++)
     {
-        pal[i]  =n;      /* red */
+        pal[i]  =(unsigned char)n;      /* red */
         pal[i+1]=0;      /* green */
-        pal[i+2]=255-n;  /* blue */
+        pal[i+2]=(unsigned char)(255 - n);  /* blue */
     }
 
     /* Create a new HDF5 file using default properties. */
@@ -294,6 +300,14 @@ static int test_simple(void)
 
     /* error zone, gracefully close */
 out:
+    if(buf1)
+        HDfree(buf1);
+    if(buf2)
+        HDfree(buf2);
+    if(buf1_out)
+        HDfree(buf1_out);
+    if(buf2_out)
+        HDfree(buf2_out);
     H5E_BEGIN_TRY {
         H5Fclose(fid);
     } H5E_END_TRY;
@@ -367,7 +381,7 @@ static int test_data(void)
     */
 
     /* read a PAL file */
-    if (read_palette(PAL2_FILE, rgb, sizeof(rgb))<0)
+    if (read_palette(PAL2_FILE, rgb, (sizeof(rgb) / sizeof(rgb[0]))) < 0)
         goto out;
 
     /* transfer to the HDF5 buffer */
@@ -393,7 +407,7 @@ static int test_data(void)
     */
 
     /* read a PAL file */
-    if (read_palette(PAL3_FILE, rgb, sizeof(rgb))<0)
+    if (read_palette(PAL3_FILE, rgb, (sizeof(rgb) / sizeof(rgb[0]))) < 0)
         goto out;
 
     /* transfer to the HDF5 buffer */
@@ -422,9 +436,9 @@ static int test_data(void)
     */
     for ( i=0, n=0; i<256*3; i+=3, n++)
     {
-        pal[i]  =n;
+        pal[i]  =(unsigned char)n;
         pal[i+1]=0;
-        pal[i+2]=255-n;
+        pal[i+2]=(unsigned char)(255 - n);
     }
 
     /* make a palette */
@@ -478,13 +492,21 @@ static int test_data(void)
     if (H5Fclose(fid)<0)
         goto out;
 
+    /* Release memory buffer */
+    HDfree(image_data);
+
     return 0;
 
     /* error zone, gracefully close */
 out:
+    /* Release memory buffer */
+    if(image_data)
+        HDfree(image_data);
+
     H5E_BEGIN_TRY {
         H5Fclose(fid);
     } H5E_END_TRY;
+
     H5_FAILED();
     return FAIL;
 }
@@ -509,6 +531,7 @@ static int test_generate(void)
     hsize_t  pal_dims[2] = { 256, 3 };
     float    *data;
     int      imax, jmax, kmax;
+    int      n_elements;
     float    valex, xmin, xmax, value;
     FILE     *f;
     char     *srcdir = getenv("srcdir"); /* the source directory */
@@ -542,8 +565,7 @@ static int test_generate(void)
     if ( f == NULL )
     {
         printf( "Could not find file %s. Try set $srcdir \n", data_file );
-        H5Fclose(fid);
-        return -1;
+        goto out;
     }
 
     /*
@@ -585,10 +607,30 @@ static int test_generate(void)
     fscanf( f, "%d %d %d", &imax, &jmax, &kmax );
     fscanf( f, "%f %f %f", &valex, &xmin, &xmax );
 
-    data = (float*) HDmalloc ( imax * jmax * kmax * sizeof( float ));
-    image_data = (unsigned char*) HDmalloc ( imax * jmax * kmax * sizeof( unsigned char ));
+    /* Sanity check on scanned-in values */
+    if(imax < 1 || jmax < 1 || kmax < 1)
+        goto out;
+
+    /* Test product for integer overflow */
+    if(imax > INT_MAX / jmax)
+        goto out;
+    if(imax * jmax > INT_MAX / kmax)
+        goto out;
+
+    n_elements = imax * jmax * kmax;
 
-    for ( i = 0; i < imax * jmax * kmax; i++ )
+    /* Test buffer sizes for overflow */
+    if(n_elements > INT_MAX / (int)sizeof(unsigned char))
+        goto out;
+    if(n_elements > INT_MAX / (int)sizeof(float))
+        goto out;
+    
+    data = (float *)HDmalloc((size_t)n_elements * sizeof( float ));
+    HDassert(data);
+    image_data = (unsigned char *)HDmalloc((size_t)n_elements * sizeof( unsigned char ));
+    HDassert(image_data);
+
+    for ( i = 0; i < n_elements; i++ )
     {
         fscanf( f, "%f ", &value );
         data[i] = value;
@@ -603,10 +645,8 @@ static int test_generate(void)
 
     TESTING2("make indexed image from all the data");
 
-    for ( i = 0; i < imax * jmax * kmax; i++ )
-    {
+    for ( i = 0; i < n_elements; i++ )
         image_data[i] = (unsigned char)(( 255 * (data[i] - xmin ) ) / (xmax - xmin ));
-    }
 
     /* Make the image */
     if ((H5IMmake_image_8bit(fid,"All data",(hsize_t)imax,(hsize_t)jmax,image_data))<0)
@@ -622,7 +662,7 @@ static int test_generate(void)
 
     TESTING2("make indexed image from land data");
 
-    for ( i = 0; i < imax * jmax * kmax; i++ )
+    for ( i = 0; i < n_elements; i++ )
     {
         if ( data[i] < 0 )
             image_data[i] = 0;
@@ -644,7 +684,7 @@ static int test_generate(void)
 
     TESTING2("make indexed image from sea data");
 
-    for ( i = 0; i < imax * jmax * kmax; i++ )
+    for ( i = 0; i < n_elements; i++ )
     {
         if ( data[i] > 0 )
             image_data[i] = 0;
@@ -687,12 +727,21 @@ static int test_generate(void)
     if (H5Fclose(fid)<0)
         goto out;
 
+    /* Release memory buffers */
+    HDfree(data);
+    HDfree(image_data);
+
     /* Indicate success */
     return 0;
 
     /* error zone, gracefully close */
 out:
-    HDfree(data);
+    /* Release memory buffers */
+    if(data)
+        HDfree(data);
+    if(image_data)
+        HDfree(image_data);
+
     H5E_BEGIN_TRY {
         H5Fclose(fid);
     } H5E_END_TRY;
@@ -725,64 +774,71 @@ static int read_data( const char* fname, /*IN*/
     int    i, n;
     int    color_planes;
     char   str[20];
-    FILE   *f;
+    FILE   *f = NULL;
     int    w, h;
-    char   *srcdir = getenv("srcdir"); /* the source directory */
-    char   data_file[512]="";          /* buffer to hold name of existing data file */
-
-    /*-------------------------------------------------------------------------
-    * compose the name of the file to open, using "srcdir", if appropriate
-    *-------------------------------------------------------------------------
-    */
-    HDstrcpy(data_file, "");
-    if (srcdir)
-    {
-        HDstrcpy(data_file, srcdir);
-        HDstrcat(data_file, "/");
-    }
-    HDstrcat(data_file,fname);
+    int    n_elements;
+    const char *data_file = H5_get_srcdir_filename(fname);
+    int    ret_val = -1;
 
     /*-------------------------------------------------------------------------
     * read
     *-------------------------------------------------------------------------
     */
 
-    f = HDfopen(data_file, "r");
-    if ( f == NULL )
-    {
+    if(NULL == (f = HDfopen(data_file, "r"))) {
         printf( "Could not open file %s. Try set $srcdir \n", data_file );
-        return -1;
+        goto out;
     }
 
-    fscanf( f, "%s", str );
-    fscanf( f, "%d", &color_planes );
-    fscanf( f, "%s", str );
-    fscanf( f, "%d", &h);
-    fscanf( f, "%s", str );
-    fscanf( f, "%d", &w);
+    fscanf(f, "%s", str);
+    fscanf(f, "%d", &color_planes);
+    fscanf(f, "%s", str);
+    fscanf(f, "%d", &h);
+    fscanf(f, "%s", str);
+    fscanf(f, "%d", &w);
 
     *width = (hsize_t)w;
     *height = (hsize_t)h;
 
-    if ( image_data )
-    {
-        HDfree( image_data );
-        image_data=NULL;
-    }
+    /* Check product for overflow */
+    if(w < 1 || h < 1 || color_planes < 1)
+        goto out;
+    if(w > INT_MAX / h)
+        goto out;
+    if(w * h > INT_MAX / color_planes)
+        goto out;
 
-    image_data = (unsigned char*) HDmalloc (w * h * color_planes * sizeof( unsigned char ));
+    /* Compute buffer size */
+    n_elements = w * h * color_planes;
 
-    for (i = 0; i < h * w * color_planes ; i++)
-    {
-        fscanf( f, "%d",&n );
+    /* Check buffer size for overflow */
+    if(n_elements > INT_MAX / (int)sizeof(unsigned char))
+        goto out;
+
+    /* Release the buffer, if it was previously allocated */
+    if(image_data) {
+        HDfree(image_data);
+        image_data = NULL;
+    } /* end if */
+
+    /* Allocate the image data buffer */
+    image_data = (unsigned char *)HDmalloc((size_t)n_elements * sizeof(unsigned char));
+
+    /* Read data elements */
+    for(i = 0; i < n_elements; i++) {
+        fscanf(f, "%d",&n);
         image_data[i] = (unsigned char)n;
-    }
-    HDfclose(f);
+    } /* end for */
 
-    return 1;
+    /* Indicate success */
+    ret_val = 1;
 
-}
+out:    
+    if(f)
+        HDfclose(f);
 
+    return ret_val;
+} /* end read_data() */
 
 
 /*-------------------------------------------------------------------------
@@ -920,6 +976,6 @@ static int read_palette(const char* fname,
     /* close file */
     HDfclose(file);
 
-    return nentries;
+    return (int)nentries;
 }