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Add checks for odd looking cmap & for cmap outside jp2h box 

Update uclouvain/openjpeg#235
Update uclouvain/openjpeg#447
This commit is contained in:
mayeut 2015-07-12 19:39:30 +02:00
parent 0b1f8eb6f7
commit 775ee87776
1 changed files with 36 additions and 1 deletions
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37
src/lib/openjp2/jp2.c
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@ -907,6 +907,23 @@ static OPJ_BOOL opj_jp2_check_color(opj_image_t *image, opj_jp2_color_t *color,
is_sane = OPJ_FALSE;
}
}
/* Issue 235/447 weird cmap */
if (1 && is_sane && (image->numcomps==1U)) {
for (i = 0; i < nr_channels; i++) {
if (!pcol_usage[i]) {
is_sane = 0U;
opj_event_msg(p_manager, EVT_WARNING, "Component mapping seems wrong. Trying to correct.\n", i);
break;
}
}
if (!is_sane) {
is_sane = OPJ_TRUE;
for (i = 0; i < nr_channels; i++) {
cmap[i].mtyp = 1U;
cmap[i].pcol = (OPJ_BYTE) i;
}
}
}
opj_free(pcol_usage);
if (!is_sane) {
return OPJ_FALSE;
@ -1990,6 +2007,7 @@ OPJ_BOOL opj_jp2_read_header_procedure( opj_jp2_t *jp2,
opj_jp2_box_t box;
OPJ_UINT32 l_nb_bytes_read;
const opj_jp2_header_handler_t * l_current_handler;
const opj_jp2_header_handler_t * l_current_handler_misplaced;
OPJ_UINT32 l_last_data_size = OPJ_BOX_SIZE;
OPJ_UINT32 l_current_data_size;
OPJ_BYTE * l_current_data = 00;
@ -2033,9 +2051,26 @@ OPJ_BOOL opj_jp2_read_header_procedure( opj_jp2_t *jp2,
}
l_current_handler = opj_jp2_find_handler(box.type);
l_current_handler_misplaced = opj_jp2_img_find_handler(box.type);
l_current_data_size = box.length - l_nb_bytes_read;
if (l_current_handler != 00) {
if ((l_current_handler != 00) || (l_current_handler_misplaced != 00)) {
if (l_current_handler == 00) {
opj_event_msg(p_manager, EVT_WARNING, "Found a misplaced '%c%c%c%c' box outside jp2h box\n", (OPJ_BYTE)(box.type>>24), (OPJ_BYTE)(box.type>>16), (OPJ_BYTE)(box.type>>8), (OPJ_BYTE)(box.type>>0));
if (jp2->jp2_state & JP2_STATE_HEADER) {
/* read anyway, we already have jp2h */
l_current_handler = l_current_handler_misplaced;
} else {
opj_event_msg(p_manager, EVT_WARNING, "JPEG2000 Header box not read yet, '%c%c%c%c' box will be ignored\n", (OPJ_BYTE)(box.type>>24), (OPJ_BYTE)(box.type>>16), (OPJ_BYTE)(box.type>>8), (OPJ_BYTE)(box.type>>0));
jp2->jp2_state |= JP2_STATE_UNKNOWN;
if (opj_stream_skip(stream,l_current_data_size,p_manager) != l_current_data_size) {
opj_event_msg(p_manager, EVT_ERROR, "Problem with skipping JPEG2000 box, stream error\n");
opj_free(l_current_data);
return OPJ_FALSE;
}
continue;
}
}
if ((OPJ_OFF_T)l_current_data_size > opj_stream_get_number_byte_left(stream)) {
/* do not even try to malloc if we can't read */
opj_event_msg(p_manager, EVT_ERROR, "Invalid box size %d for box '%c%c%c%c'. Need %d bytes, %d bytes remaining \n", box.length, (OPJ_BYTE)(box.type>>24), (OPJ_BYTE)(box.type>>16), (OPJ_BYTE)(box.type>>8), (OPJ_BYTE)(box.type>>0), l_current_data_size, (OPJ_UINT32)opj_stream_get_number_byte_left(stream));