File libcaca-bsc1182731-prevent-overflow.patch of Package libcaca

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File libcaca-bsc1182731-prevent-overflow.patch of Package libcaca (Revision b66b51338ffaec7c07b16efe7ee7450a)

Currently displaying revision b66b51338ffaec7c07b16efe7ee7450a , Show latest

Index: libcaca-da28e9684ef445ac8d42745644336b8a75c01855/caca/canvas.c
===================================================================
--- libcaca-da28e9684ef445ac8d42745644336b8a75c01855.orig/caca/canvas.c
+++ libcaca-da28e9684ef445ac8d42745644336b8a75c01855/caca/canvas.c
@@ -45,6 +45,7 @@ static int caca_resize(caca_canvas_t *,
  *
  *  If an error occurs, NULL is returned and \b errno is set accordingly:
  *  - \c EINVAL Specified width or height is invalid.
+ *  - \c EOVERFLOW Specified width and height overflowed
  *  - \c ENOMEM Not enough memory for the requested canvas size.
  *
  *  \param width The desired canvas width
@@ -200,6 +201,7 @@ int caca_unmanage_canvas(caca_canvas_t *
  *
  *  If an error occurs, -1 is returned and \b errno is set accordingly:
  *  - \c EINVAL Specified width or height is invalid.
+ *  - \c EOVERFLOW Specified width and height overflowed.
  *  - \c EBUSY The canvas is in use by a display driver and cannot be resized.
  *  - \c ENOMEM Not enough memory for the requested canvas size. If this
  *    happens, the canvas handle becomes invalid and should not be used.
@@ -365,6 +367,14 @@ int caca_resize(caca_canvas_t *cv, int w
 {
     int x, y, f, old_width, old_height, new_size, old_size;
 
+    /* Check for overflow */
+    new_size = width * height;
+    if (new_size < 0 || (width > 0 && new_size / width != height))
+    {
+	seterrno(EOVERFLOW);
+	return -1;
+    }
+
     old_width = cv->width;
     old_height = cv->height;
     old_size = old_width * old_height;
@@ -375,7 +385,6 @@ int caca_resize(caca_canvas_t *cv, int w
      * dirty rectangle handling */
     cv->width = width;
     cv->height = height;
-    new_size = width * height;
 
     /* If width or height is smaller (or both), we have the opportunity to
      * reduce or even remove dirty rectangles */
Index: libcaca-da28e9684ef445ac8d42745644336b8a75c01855/caca/codec/import.c
===================================================================
--- libcaca-da28e9684ef445ac8d42745644336b8a75c01855.orig/caca/codec/import.c
+++ libcaca-da28e9684ef445ac8d42745644336b8a75c01855/caca/codec/import.c
@@ -61,6 +61,7 @@ static ssize_t import_caca(caca_canvas_t
  *
  *  If an error occurs, -1 is returned and \b errno is set accordingly:
  *  - \c ENOMEM Not enough memory to allocate canvas.
+ *  - \c EOVERFLOW Importing data caused a value overflow.
  *  - \c EINVAL Invalid format requested.
  *
  *  \param cv A libcaca canvas in which to import the file.
Index: libcaca-da28e9684ef445ac8d42745644336b8a75c01855/caca/codec/text.c
===================================================================
--- libcaca-da28e9684ef445ac8d42745644336b8a75c01855.orig/caca/codec/text.c
+++ libcaca-da28e9684ef445ac8d42745644336b8a75c01855/caca/codec/text.c
@@ -46,7 +46,7 @@ ssize_t _import_text(caca_canvas_t *cv,
     char const *text = (char const *)data;
     unsigned int width = 0, height = 0, x = 0, y = 0, i;
 
-    caca_set_canvas_size(cv, width, height);
+    caca_set_canvas_size(cv, 0, 0);
 
     for(i = 0; i < size; i++)
     {
@@ -70,15 +70,19 @@ ssize_t _import_text(caca_canvas_t *cv,
             if(y >= height)
                 height = y + 1;
 
-            caca_set_canvas_size(cv, width, height);
+	    if (caca_set_canvas_size(cv, width, height) < 0)
+		return -1;
         }
 
         caca_put_char(cv, x, y, ch);
         x++;
     }
 
-    if(y > height)
-        caca_set_canvas_size(cv, width, height = y);
+    if (y > height)
+    {
+	if (caca_set_canvas_size(cv, width, height = y) < 0)
+	    return -1;
+    }
 
     return (ssize_t)size;
 }
@@ -431,7 +435,8 @@ ssize_t _import_ansi(caca_canvas_t *cv,
             {
                 savedattr = caca_get_attr(cv, -1, -1);
                 caca_set_attr(cv, im.clearattr);
-                caca_set_canvas_size(cv, width = x + wch, height);
+		if (caca_set_canvas_size(cv, width = x + wch, height) < 0)
+		    return -1;
                 caca_set_attr(cv, savedattr);
             }
             else
@@ -448,7 +453,8 @@ ssize_t _import_ansi(caca_canvas_t *cv,
             caca_set_attr(cv, im.clearattr);
             if(growy)
             {
-                caca_set_canvas_size(cv, width, height = y + 1);
+		if (caca_set_canvas_size(cv, width, height = y + 1) < 0)
+		    return -1;
             }
             else
             {
@@ -480,7 +486,8 @@ ssize_t _import_ansi(caca_canvas_t *cv,
     {
         savedattr = caca_get_attr(cv, -1, -1);
         caca_set_attr(cv, im.clearattr);
-        caca_set_canvas_size(cv, width, height = y);
+	if (caca_set_canvas_size(cv, width, height = y))
+	    return -1;
         caca_set_attr(cv, savedattr);
     }
 
Index: libcaca-da28e9684ef445ac8d42745644336b8a75c01855/caca/t/canvas.cpp
===================================================================
--- libcaca-da28e9684ef445ac8d42745644336b8a75c01855.orig/caca/t/canvas.cpp
+++ libcaca-da28e9684ef445ac8d42745644336b8a75c01855/caca/t/canvas.cpp
@@ -53,18 +53,29 @@ public:
         CPPUNIT_ASSERT_EQUAL(caca_get_canvas_width(cv), 0);
         CPPUNIT_ASSERT_EQUAL(caca_get_canvas_height(cv), 0);
 
-        caca_set_canvas_size(cv, 1, 1);
+	int ret = caca_set_canvas_size(cv, 1, 1);
+	CPPUNIT_ASSERT_EQUAL(ret, 0);
         CPPUNIT_ASSERT_EQUAL(caca_get_canvas_width(cv), 1);
         CPPUNIT_ASSERT_EQUAL(caca_get_canvas_height(cv), 1);
 
-        caca_set_canvas_size(cv, 1234, 1001);
+	ret = caca_set_canvas_size(cv, 1234, 1001);
+	CPPUNIT_ASSERT_EQUAL(ret, 0);
         CPPUNIT_ASSERT_EQUAL(caca_get_canvas_width(cv), 1234);
         CPPUNIT_ASSERT_EQUAL(caca_get_canvas_height(cv), 1001);
 
-        caca_set_canvas_size(cv, 0, 0);
+	ret = caca_set_canvas_size(cv, 0, 0);
+	CPPUNIT_ASSERT_EQUAL(ret, 0);
         CPPUNIT_ASSERT_EQUAL(caca_get_canvas_width(cv), 0);
         CPPUNIT_ASSERT_EQUAL(caca_get_canvas_height(cv), 0);
 
+	CPPUNIT_ASSERT_EQUAL(-1, caca_set_canvas_size(cv, -1, 50));
+	CPPUNIT_ASSERT_EQUAL(-1, caca_set_canvas_size(cv, 50, -1));
+	CPPUNIT_ASSERT_EQUAL(-1, caca_set_canvas_size(cv, -1, -1));
+	CPPUNIT_ASSERT_EQUAL(-1, caca_set_canvas_size(cv, INT_MAX / 2, 3));
+	CPPUNIT_ASSERT_EQUAL(-1, caca_set_canvas_size(cv, 3, INT_MAX / 2));
+	CPPUNIT_ASSERT_EQUAL(-1, caca_set_canvas_size(cv, INT_MAX / 2, INT_MAX / 2));
+	CPPUNIT_ASSERT_EQUAL(0, caca_set_canvas_size(cv, 0, 0));
+
         caca_free_canvas(cv);
     }
 
Index: libcaca-da28e9684ef445ac8d42745644336b8a75c01855/tools/makefont.c
===================================================================
--- libcaca-da28e9684ef445ac8d42745644336b8a75c01855.orig/tools/makefont.c
+++ libcaca-da28e9684ef445ac8d42745644336b8a75c01855/tools/makefont.c
@@ -40,7 +40,8 @@
  * and the UTF-8 glyphs necessary for canvas rotation and mirroring. */
 static unsigned int const blocklist[] =
 {
-    0x0000, 0x0080, /* Basic latin: A, B, C, a, b, c */
+    0x0020, 0x0080, /* Basic latin: A, B, C, a, b, c */
+#if 0
     0x0080, 0x0100, /* Latin-1 Supplement: Ä, Ç, å, ß */
     0x0100, 0x0180, /* Latin Extended-A: Ā č Ō œ */
     0x0180, 0x0250, /* Latin Extended-B: Ǝ Ƹ */
@@ -63,6 +64,7 @@ static unsigned int const blocklist[] =
     0x30a0, 0x3100, /* Katakana: ロ ル */
     0xff00, 0xfff0, /* Halfwidth and Fullwidth Forms: Ａ, Ｂ, Ｃ, ａ, ｂ, ｃ */
     0x10400, 0x10450, /* Deseret: 𐐒 𐐋 */
+#endif
     0, 0
 };
 
@@ -105,10 +107,10 @@ int main(int argc, char *argv[])
 
     if(argc != 5)
     {
-        fprintf(stderr, "%s: wrong argument count\n", argv[0]);
-        fprintf(stderr, "usage: %s <prefix> <font> <dpi> <bpp>\n", argv[0]);
-        fprintf(stderr, "eg: %s monospace9 \"Monospace 9\" 96 4\n", argv[0]);
-        return -1;
+	fprintf(stderr, "%s: wrong argument count\n", argv[0]);
+	fprintf(stderr, "usage: %s <prefix> <font> <dpi> <bpp>\n", argv[0]);
+	fprintf(stderr, "eg: %s monospace9 \"Monospace 9\" 96 4\n", argv[0]);
+	return -1;
     }
 
     prefix = argv[1];
@@ -118,8 +120,8 @@ int main(int argc, char *argv[])
 
     if(dpi == 0 || (bpp != 1 && bpp != 2 && bpp != 4 && bpp != 8))
     {
-        fprintf(stderr, "%s: invalid argument\n", argv[0]);
-        return -1;
+	fprintf(stderr, "%s: invalid argument\n", argv[0]);
+	return -1;
     }
 
     fprintf(stderr, "Font \"%s\", %i dpi, %i bpp\n", font, dpi, bpp);
@@ -132,9 +134,9 @@ int main(int argc, char *argv[])
     l = pango_layout_new(cx);
     if(!l)
     {
-        fprintf(stderr, "%s: unable to initialise pango\n", argv[0]);
-        g_object_unref(cx);
-        return -1;
+	fprintf(stderr, "%s: unable to initialise pango\n", argv[0]);
+	g_object_unref(cx);
+	return -1;
     }
 
     fd = pango_font_description_from_string(font);
@@ -164,11 +166,11 @@ int main(int argc, char *argv[])
     fullglyphs = 0;
     for(b = 0; blocklist[b + 1]; b += 2)
     {
-        blocks++;
-        glyphs += blocklist[b + 1] - blocklist[b];
-        for(i = blocklist[b]; i < blocklist[b + 1]; i++)
-            if(caca_utf32_is_fullwidth(i))
-                fullglyphs++;
+	blocks++;
+	glyphs += blocklist[b + 1] - blocklist[b];
+	for(i = blocklist[b]; i < blocklist[b + 1]; i++)
+	    if(caca_utf32_is_fullwidth(i))
+		fullglyphs++;
     }
 
     control_size = 28 + 12 * blocks + 8 * glyphs;
@@ -180,16 +182,16 @@ int main(int argc, char *argv[])
     /* Let's go! */
     printf("/* libcaca font file\n");
     printf(" * \"%s\": %i dpi, %i bpp, %ix%i/%ix%i glyphs\n",
-           font, dpi, bpp, stdwidth, height, fullwidth, height);
+	   font, dpi, bpp, stdwidth, height, fullwidth, height);
     printf(" * Automatically generated by tools/makefont.c:\n");
     printf(" *   tools/makefont %s \"%s\" %i %i\n", prefix, font, dpi, bpp);
     printf(" */\n");
     printf("\n");
 
     printf("static size_t const %s_size = %i;\n",
-           prefix, 4 + control_size + data_size);
+	   prefix, 4 + control_size + data_size);
     printf("static uint8_t const %s_data[%i] =\n",
-           prefix, 4 + control_size + data_size);
+	   prefix, 4 + control_size + data_size);
     printf("{\n");
 
     printf("/* file: */\n");
@@ -217,10 +219,10 @@ int main(int argc, char *argv[])
     n = 0;
     for(b = 0; blocklist[b + 1]; b += 2)
     {
-        printf_u32("%s", blocklist[b]);
-        printf_u32("%s", blocklist[b + 1]);
-        printf_u32("%s\n", n);
-        n += blocklist[b + 1] - blocklist[b];
+	printf_u32("%s", blocklist[b]);
+	printf_u32("%s", blocklist[b + 1]);
+	printf_u32("%s\n", n);
+	n += blocklist[b + 1] - blocklist[b];
     }
     printf("\n");
 
@@ -228,81 +230,81 @@ int main(int argc, char *argv[])
     current_offset = n = 0;
     for(b = 0; blocklist[b + 1]; b += 2)
     {
-        for(i = blocklist[b]; i < blocklist[b + 1]; i++)
-        {
-            int x, y, bytes, current_width = stdwidth;
-            unsigned int k, current_size = stdsize;
-
-            if(caca_utf32_is_fullwidth(i))
-            {
-                current_width = fullwidth;
-                current_size = fullsize;
-            }
-            gtab[n].unicode = i;
-            bytes = caca_utf32_to_utf8(gtab[n].buf, gtab[n].unicode);
-            gtab[n].buf[bytes] = '\0';
-
-            /* Render glyph on a bitmap */
-            pango_layout_set_text(l, gtab[n].buf, -1);
-            memset(img.buffer, 0, img.pitch * height);
-            pango_ft2_render_layout(&img, l, 0, 0);
-
-            /* Fix glyphs that we know how to handle better */
-            fix_glyph(&img, gtab[n].unicode, current_width, height);
-
-            /* Write bitmap as an escaped C string */
-            memset(glyph_data + current_offset, 0, current_size);
-            k = 0;
-            for(y = 0; y < height; y++)
-            {
-                for(x = 0; x < current_width; x++)
-                {
-                    uint8_t pixel = img.buffer[y * img.pitch + x];
-
-                    pixel >>= (8 - bpp);
-                    glyph_data[current_offset + k / 8]
-                        |= pixel << (8 - bpp - (k % 8));
-                    k += bpp;
-                }
-            }
-
-            /* Check whether this is the same glyph as another one. Please
-             * don't bullshit me about sorting, hashing and stuff like that,
-             * our data is small enough for this to work. */
-            for(k = 0; k < n; k++)
-            {
-                if(gtab[k].data_size != current_size)
-                    continue;
+	for(i = blocklist[b]; i < blocklist[b + 1]; i++)
+	{
+	    int x, y, bytes, current_width = stdwidth;
+	    unsigned int k, current_size = stdsize;
+
+	    if(caca_utf32_is_fullwidth(i))
+	    {
+		current_width = fullwidth;
+		current_size = fullsize;
+	    }
+	    gtab[n].unicode = i;
+	    bytes = caca_utf32_to_utf8(gtab[n].buf, gtab[n].unicode);
+	    gtab[n].buf[bytes] = '\0';
+
+	    /* Render glyph on a bitmap */
+	    pango_layout_set_text(l, gtab[n].buf, -1);
+	    memset(img.buffer, 0, img.pitch * height);
+	    pango_ft2_render_layout(&img, l, 0, 0);
+
+	    /* Fix glyphs that we know how to handle better */
+	    fix_glyph(&img, gtab[n].unicode, current_width, height);
+
+	    /* Write bitmap as an escaped C string */
+	    memset(glyph_data + current_offset, 0, current_size);
+	    k = 0;
+	    for(y = 0; y < height; y++)
+	    {
+		for(x = 0; x < current_width; x++)
+		{
+		    uint8_t pixel = img.buffer[y * img.pitch + x];
+
+		    pixel >>= (8 - bpp);
+		    glyph_data[current_offset + k / 8]
+			|= pixel << (8 - bpp - (k % 8));
+		    k += bpp;
+		}
+	    }
+
+	    /* Check whether this is the same glyph as another one. Please
+	     * don't bullshit me about sorting, hashing and stuff like that,
+	     * our data is small enough for this to work. */
+	    for(k = 0; k < n; k++)
+	    {
+		if(gtab[k].data_size != current_size)
+		    continue;
 #if 0
-                if(!memcmp(glyph_data + gtab[k].data_offset,
-                           glyph_data + current_offset, current_size))
-                    break;
+		if(!memcmp(glyph_data + gtab[k].data_offset,
+			   glyph_data + current_offset, current_size))
+		    break;
 #endif
-            }
+	    }
 
-            gtab[n].data_offset = current_offset;
-            gtab[n].data_width = current_width;
-            gtab[n].data_size = current_size;
-            gtab[n].same_as = k;
+	    gtab[n].data_offset = current_offset;
+	    gtab[n].data_width = current_width;
+	    gtab[n].data_size = current_size;
+	    gtab[n].same_as = k;
 
-            if(k == n)
-                current_offset += current_size;
+	    if(k == n)
+		current_offset += current_size;
 
-            n++;
-        }
+	    n++;
+	}
     }
 
     printf("/* glyph_info: */\n");
     n = 0;
     for(b = 0; blocklist[b + 1]; b += 2)
     {
-        for(i = blocklist[b]; i < blocklist[b + 1]; i++)
-        {
-            printf_u16("%s", gtab[n].data_width);
-            printf_u16("%s", height);
-            printf_u32("%s\n", gtab[gtab[n].same_as].data_offset);
-            n++;
-        }
+	for(i = blocklist[b]; i < blocklist[b + 1]; i++)
+	{
+	    printf_u16("%s", gtab[n].data_width);
+	    printf_u16("%s", height);
+	    printf_u32("%s\n", gtab[gtab[n].same_as].data_offset);
+	    n++;
+	}
     }
     printf("\n");
 
@@ -310,24 +312,38 @@ int main(int argc, char *argv[])
     n = 0;
     for(b = 0; blocklist[b + 1]; b += 2)
     {
-        for(i = blocklist[b]; i < blocklist[b + 1]; i++)
-        {
-            /* Print glyph value in comment */
-            printf("/* ");
-            printf_unicode(&gtab[n]);
-
-            if(gtab[n].same_as == n)
-                printf_hex(" */ %s\n",
-                           glyph_data + gtab[n].data_offset, gtab[n].data_size);
-            else
-            {
-                printf(" is ");
-                printf_unicode(&gtab[gtab[n].same_as]);
-                printf(" */\n");
-            }
+	for(i = blocklist[b]; i < blocklist[b + 1]; i++)
+	{
+	    /* Print glyph value in comment */
+	    printf("/* ");
+	    printf_unicode(&gtab[n]);
+
+	    if(gtab[n].same_as == n)
+	    {
+		char const *lut = " .:nmW@";
+		printf("\n");
+		for (int y = 0; y < height; ++y)
+		{
+		    for (int x = 0; x < gtab[n].data_width; ++x)
+		    {
+			int val = glyph_data[gtab[n].data_offset + y * gtab[n].data_width + x];
+			char ch = lut[val * val * 7 / 256 / 256];
+			printf("%c%c", ch, ch);
+		    }
+		    printf("\n");
+		}
+		//printf_hex(" */ %s\n",
+		//           glyph_data + gtab[n].data_offset, gtab[n].data_size);
+	    }
+	    else
+	    {
+		printf(" is ");
+		printf_unicode(&gtab[gtab[n].same_as]);
+		printf(" */\n");
+	    }
 
-            n++;
-        }
+	    n++;
+	}
     }
 
     printf("};\n");
@@ -347,74 +363,74 @@ int main(int argc, char *argv[])
  */
 
 static void fix_glyph(FT_Bitmap *i, uint32_t ch,
-                      unsigned int width, unsigned int height)
+		      unsigned int width, unsigned int height)
 {
     unsigned int x, y;
 
     switch(ch)
     {
     case 0x00002580: /* ▀ */
-        for(y = 0; y < height; y++)
-            for(x = 0; x < width; x++)
-                i->buffer[x + y * i->pitch] = y < height / 2 ? 0xff : 0x00;
-        if(height & 1)
-            for(x = 0; x < width; x++)
-                i->buffer[x + (height / 2) * i->pitch] = 0x7f;
-        break;
+	for(y = 0; y < height; y++)
+	    for(x = 0; x < width; x++)
+		i->buffer[x + y * i->pitch] = y < height / 2 ? 0xff : 0x00;
+	if(height & 1)
+	    for(x = 0; x < width; x++)
+		i->buffer[x + (height / 2) * i->pitch] = 0x7f;
+	break;
     case 0x00002584: /* ▄ */
-        for(y = 0; y < height; y++)
-            for(x = 0; x < width; x++)
-                i->buffer[x + y * i->pitch] = y < height / 2 ? 0x00 : 0xff;
-        if(height & 1)
-            for(x = 0; x < width; x++)
-                i->buffer[x + (height / 2) * i->pitch] = 0x7f;
-        break;
+	for(y = 0; y < height; y++)
+	    for(x = 0; x < width; x++)
+		i->buffer[x + y * i->pitch] = y < height / 2 ? 0x00 : 0xff;
+	if(height & 1)
+	    for(x = 0; x < width; x++)
+		i->buffer[x + (height / 2) * i->pitch] = 0x7f;
+	break;
     case 0x0000258c: /* ▌ */
-        for(y = 0; y < height; y++)
-            for(x = 0; x < width; x++)
-                i->buffer[x + y * i->pitch] = x < width / 2 ? 0xff : 0x00;
-        if(width & 1)
-            for(y = 0; y < height; y++)
-                i->buffer[(width / 2) + y * i->pitch] = 0x7f;
-        break;
+	for(y = 0; y < height; y++)
+	    for(x = 0; x < width; x++)
+		i->buffer[x + y * i->pitch] = x < width / 2 ? 0xff : 0x00;
+	if(width & 1)
+	    for(y = 0; y < height; y++)
+		i->buffer[(width / 2) + y * i->pitch] = 0x7f;
+	break;
     case 0x00002590: /* ▐ */
-        for(y = 0; y < height; y++)
-            for(x = 0; x < width; x++)
-                i->buffer[x + y * i->pitch] = x < width / 2 ? 0x00 : 0xff;
-        if(width & 1)
-            for(y = 0; y < height; y++)
-                i->buffer[(width / 2) + y * i->pitch] = 0x7f;
-        break;
+	for(y = 0; y < height; y++)
+	    for(x = 0; x < width; x++)
+		i->buffer[x + y * i->pitch] = x < width / 2 ? 0x00 : 0xff;
+	if(width & 1)
+	    for(y = 0; y < height; y++)
+		i->buffer[(width / 2) + y * i->pitch] = 0x7f;
+	break;
     case 0x000025a0: /* ■ */
-        for(y = 0; y < height; y++)
-            for(x = 0; x < width; x++)
-                i->buffer[x + y * i->pitch] =
-                    (y >= height / 4) && (y < 3 * height / 4) ? 0xff : 0x00;
-        if(height & 3)
-            for(x = 0; x < width; x++) /* FIXME: could be more precise */
-                i->buffer[x + (height / 4) * i->pitch] =
-                    i->buffer[x + (3 * height / 4) * i->pitch] = 0x7f;
-        break;
+	for(y = 0; y < height; y++)
+	    for(x = 0; x < width; x++)
+		i->buffer[x + y * i->pitch] =
+		    (y >= height / 4) && (y < 3 * height / 4) ? 0xff : 0x00;
+	if(height & 3)
+	    for(x = 0; x < width; x++) /* FIXME: could be more precise */
+		i->buffer[x + (height / 4) * i->pitch] =
+		    i->buffer[x + (3 * height / 4) * i->pitch] = 0x7f;
+	break;
     case 0x00002588: /* █ */
-        memset(i->buffer, 0xff, height * i->pitch);
-        break;
+	memset(i->buffer, 0xff, height * i->pitch);
+	break;
     case 0x00002593: /* ▓ */
-        for(y = 0; y < height; y++)
-            for(x = 0; x < width; x++)
-                i->buffer[x + y * i->pitch] =
-                    ((x + 2 * (y & 1)) & 3) ? 0xff : 0x00;
-        break;
+	for(y = 0; y < height; y++)
+	    for(x = 0; x < width; x++)
+		i->buffer[x + y * i->pitch] =
+		    ((x + 2 * (y & 1)) & 3) ? 0xff : 0x00;
+	break;
     case 0x00002592: /* ▒ */
-        for(y = 0; y < height; y++)
-            for(x = 0; x < width; x++)
-                i->buffer[x + y * i->pitch] = ((x + y) & 1) ? 0xff : 0x00;
-        break;
+	for(y = 0; y < height; y++)
+	    for(x = 0; x < width; x++)
+		i->buffer[x + y * i->pitch] = ((x + y) & 1) ? 0xff : 0x00;
+	break;
     case 0x00002591: /* ░ */
-        for(y = 0; y < height; y++)
-            for(x = 0; x < width; x++)
-                i->buffer[x + y * i->pitch] =
-                    ((x + 2 * (y & 1)) & 3) ? 0x00 : 0xff;
-        break;
+	for(y = 0; y < height; y++)
+	    for(x = 0; x < width; x++)
+		i->buffer[x + y * i->pitch] =
+		    ((x + 2 * (y & 1)) & 3) ? 0x00 : 0xff;
+	break;
     }
 }
 
@@ -425,9 +441,9 @@ static int printf_unicode(struct glyph *
     wr += printf("U+%.04X: \"", g->unicode);
 
     if(g->unicode < 0x20 || (g->unicode >= 0x7f && g->unicode <= 0xa0))
-        wr += printf("\\x%.02x\"", g->unicode);
+	wr += printf("\\x%.02x\"", g->unicode);
     else
-        wr += printf("%s\"", g->buf);
+	wr += printf("%s\"", g->buf);
 
     return wr;
 }
@@ -450,7 +466,7 @@ static int printf_hex(char const *fmt, u
     char *parser = buf;
 
     while(bytes--)
-        parser += sprintf(parser, "%i,", (unsigned int)*data++);
+	parser += sprintf(parser, "%i,", (unsigned int)*data++);
     parser[0] = '\0';
 
     return printf(fmt, buf);

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File libcaca-bsc1182731-prevent-overflow.patch of Package libcaca (Revision b66b51338ffaec7c07b16efe7ee7450a)

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