static int
-read_mb(unsigned int *data, FILE *f)
+read_mb(unsigned int *data, void *map, size_t length, size_t *position)
{
int ac = 0, ct;
unsigned char buf;
-
+
for (ct = 0;;)
{
if ((ct++) == 5) return -1;
- if ((fread(&buf, 1, 1, f)) < 1)
- return -1;
+ if (*position > length) return -1;
+ buf = ((unsigned char *) map)[(*position)++];
ac = (ac << 7) | (buf & 0x7f);
if ((buf & 0x80) == 0) break;
}
static Eina_Bool
evas_image_load_file_head_wbmp(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
{
- FILE *f;
+ Eina_File *f;
+ void *map = NULL;
+ size_t position = 0;
+ size_t length;
unsigned int type, w, h;
- unsigned char fixed_header;
- struct stat statbuf;
-
+
*error = EVAS_LOAD_ERROR_GENERIC;
- f = fopen(file, "rb");
+ f = eina_file_open(file, 0);
if (!f)
{
*error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
return EINA_FALSE;
}
-
- if (stat(file, &statbuf) == -1) goto bail;
- if (read_mb(&type, f) < 0) goto bail;
-
+
+ length = eina_file_size_get(f);
+ if (length <= 4) goto bail;
+
+ map = eina_file_map_all(f, EINA_FILE_SEQUENTIAL);
+ if (!map) goto bail;
+
+ if (read_mb(&type, map, length, &position) < 0) goto bail;
+
if (type != 0)
{
*error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
goto bail;
}
-
- if (fread(&fixed_header, 1, 1, f) != 1) goto bail;
- if (read_mb(&w, f) < 0) goto bail;
- if (read_mb(&h, f) < 0) goto bail;
+
+ position++; /* skipping one byte */
+ if (read_mb(&w, map, length, &position) < 0) goto bail;
+ if (read_mb(&h, map, length, &position) < 0) goto bail;
if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) ||
IMG_TOO_BIG(w, h))
{
*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
goto bail;
}
-
- fclose(f);
+
+ eina_file_map_free(f, map);
+ eina_file_close(f);
ie->w = w;
ie->h = h;
-
+
*error = EVAS_LOAD_ERROR_NONE;
return EINA_TRUE;
bail:
- fclose(f);
+ if (map) eina_file_map_free(f, map);
+ eina_file_close(f);
return EINA_FALSE;
}
static Eina_Bool
evas_image_load_file_data_wbmp(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
{
- FILE *f;
- unsigned int dummy, line_length;
+ Eina_File *f;
+ void *map = NULL;
+ size_t position = 0;
+ size_t length;
+ unsigned int type, w, h;
+ unsigned int line_length;
unsigned char *line = NULL;
int cur = 0, x, y;
DATA32 *dst_data;
-
+
*error = EVAS_LOAD_ERROR_GENERIC;
- f = fopen(file, "rb");
+ f = eina_file_open(file, EINA_FALSE);
if (!f)
{
*error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
return EINA_FALSE;
}
- if (read_mb(&dummy, f) < 0) goto bail;
- if (fread(&dummy, 1, 1, f) != 1) goto bail;
- if (read_mb(&dummy, f) < 0) goto bail;
- if (read_mb(&dummy, f) < 0) goto bail;
-
+
+ length = eina_file_size_get(f);
+ if (length <= 4) goto bail;
+
+ map = eina_file_map_all(f, EINA_FILE_SEQUENTIAL);
+ if (!map) goto bail;
+
+ if (read_mb(&type, map, length, &position) < 0) goto bail;
+ position++; /* skipping one byte */
+ if (read_mb(&w, map, length, &position) < 0) goto bail;
+ if (read_mb(&h, map, length, &position) < 0) goto bail;
+
+ if (type != 0)
+ {
+ *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
+ goto bail;
+ }
+
+ if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) ||
+ IMG_TOO_BIG(w, h))
+ {
+ *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
+ goto bail;
+ }
+
+ ie->w = w;
+ ie->h = h;
+
evas_cache_image_surface_alloc(ie, ie->w, ie->h);
dst_data = evas_cache_image_pixels(ie);
if (!dst_data)
*error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
goto bail;
}
-
+
line_length = (ie->w + 7) >> 3;
- line = alloca(line_length);
-
+
for (y = 0; y < (int)ie->h; y++)
{
- if (fread(line, 1, line_length, f) != line_length) goto bail;
+ if (position + line_length > length) goto bail;
+ line = ((unsigned char*) map) + position;
+ position += line_length;
for (x = 0; x < (int)ie->w; x++)
{
int idx = x >> 3;
cur++;
}
}
- fclose(f);
+ eina_file_map_free(f, map);
+ eina_file_close(f);
*error = EVAS_LOAD_ERROR_NONE;
return EINA_TRUE;
bail:
- fclose(f);
+ if (map) eina_file_map_free(f, map);
+ eina_file_close(f);
return EINA_FALSE;
}