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Remove limitation that prevents from opening images bigger than 4 billion pixels 

However the intermediate buffer for decoding must still be smaller than 4
billion pixels, so this is useful for decoding at a lower resolution level,
or subtile decoding.
This commit is contained in:
Even Rouault 2017-09-01 16:30:37 +02:00
parent c37e360a51
commit d5153ba404
2 changed files with 44 additions and 41 deletions
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19
src/lib/openjp2/j2k.c
View File

@ -2142,13 +2142,6 @@ static OPJ_BOOL opj_j2k_read_siz(opj_j2k_t *p_j2k,
return OPJ_FALSE;
}
/* testcase 1610.pdf.SIGSEGV.59c.681 */
if ((0xFFFFFFFFU / l_image->x1) < l_image->y1) {
opj_event_msg(p_manager, EVT_ERROR,
"Prevent buffer overflow (x1: %d, y1: %d)\n", l_image->x1, l_image->y1);
return OPJ_FALSE;
}
/* testcase issue427-illegal-tile-offset.jp2 */
l_tx1 = opj_uint_adds(l_cp->tx0, l_cp->tdx); /* manage overflow */
l_ty1 = opj_uint_adds(l_cp->ty0, l_cp->tdy); /* manage overflow */
@ -8787,10 +8780,14 @@ OPJ_BOOL opj_j2k_read_tile_header(opj_j2k_t * p_j2k,
*p_tile_index = p_j2k->m_current_tile_number;
*p_go_on = OPJ_TRUE;
if (p_data_size) {
/* For internal use in j2k.c, we don't need this */
/* This is just needed for folks using the opj_read_tile_header() / opj_decode_tile_data() combo */
*p_data_size = opj_tcd_get_decoded_tile_size(p_j2k->m_tcd, OPJ_FALSE);
if (*p_data_size == UINT_MAX) {
return OPJ_FALSE;
}
}
*p_tile_x0 = p_j2k->m_tcd->tcd_image->tiles->x0;
*p_tile_y0 = p_j2k->m_tcd->tcd_image->tiles->y0;
*p_tile_x1 = p_j2k->m_tcd->tcd_image->tiles->x1;
@ -10466,7 +10463,6 @@ static OPJ_BOOL opj_j2k_decode_tiles(opj_j2k_t *p_j2k,
{
OPJ_BOOL l_go_on = OPJ_TRUE;
OPJ_UINT32 l_current_tile_no;
OPJ_UINT32 l_data_size;
OPJ_INT32 l_tile_x0, l_tile_y0, l_tile_x1, l_tile_y1;
OPJ_UINT32 l_nb_comps;
OPJ_UINT32 nr_tiles = 0;
@ -10483,7 +10479,7 @@ static OPJ_BOOL opj_j2k_decode_tiles(opj_j2k_t *p_j2k,
OPJ_UINT32 i;
if (! opj_j2k_read_tile_header(p_j2k,
&l_current_tile_no,
&l_data_size,
NULL,
&l_tile_x0, &l_tile_y0,
&l_tile_x1, &l_tile_y1,
&l_nb_comps,
@ -10515,7 +10511,7 @@ static OPJ_BOOL opj_j2k_decode_tiles(opj_j2k_t *p_j2k,
for (;;) {
if (! opj_j2k_read_tile_header(p_j2k,
&l_current_tile_no,
&l_data_size,
NULL,
&l_tile_x0, &l_tile_y0,
&l_tile_x1, &l_tile_y1,
&l_nb_comps,
@ -10589,7 +10585,6 @@ static OPJ_BOOL opj_j2k_decode_one_tile(opj_j2k_t *p_j2k,
OPJ_BOOL l_go_on = OPJ_TRUE;
OPJ_UINT32 l_current_tile_no;
OPJ_UINT32 l_tile_no_to_dec;
OPJ_UINT32 l_data_size;
OPJ_INT32 l_tile_x0, l_tile_y0, l_tile_x1, l_tile_y1;
OPJ_UINT32 l_nb_comps;
OPJ_UINT32 l_nb_tiles;
@ -10640,7 +10635,7 @@ static OPJ_BOOL opj_j2k_decode_one_tile(opj_j2k_t *p_j2k,
for (;;) {
if (! opj_j2k_read_tile_header(p_j2k,
&l_current_tile_no,
&l_data_size,
NULL,
&l_tile_x0, &l_tile_y0,
&l_tile_x1, &l_tile_y1,
&l_nb_comps,

60
src/lib/openjp2/tcd.c
View File

@ -886,27 +886,6 @@ static INLINE OPJ_BOOL opj_tcd_init_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no,
l_res->x1 = opj_int_ceildivpow2(l_tilec->x1, (OPJ_INT32)l_level_no);
l_res->y1 = opj_int_ceildivpow2(l_tilec->y1, (OPJ_INT32)l_level_no);
if (!isEncoder && resno + 1 == l_tilec->minimum_num_resolutions) {
/* compute l_data_size with overflow check */
OPJ_UINT32 res_w = (OPJ_UINT32)(l_res->x1 - l_res->x0);
OPJ_UINT32 res_h = (OPJ_UINT32)(l_res->y1 - l_res->y0);
/* issue 733, l_data_size == 0U, probably something wrong should be checked before getting here */
if (res_h > 0 && res_w > (((OPJ_UINT32) - 1) / res_h)) {
opj_event_msg(manager, EVT_ERROR, "Not enough memory for tile data\n");
return OPJ_FALSE;
}
l_data_size = res_w * res_h;
if ((((OPJ_UINT32) - 1) / (OPJ_UINT32)sizeof(OPJ_UINT32)) < l_data_size) {
opj_event_msg(manager, EVT_ERROR, "Not enough memory for tile data\n");
return OPJ_FALSE;
}
l_data_size *= (OPJ_UINT32)sizeof(OPJ_UINT32);
l_tilec->data_size_needed = l_data_size;
}
/*fprintf(stderr, "\t\t\tres_x0= %d, res_y0 =%d, res_x1=%d, res_y1=%d\n", l_res->x0, l_res->y0, l_res->x1, l_res->y1);*/
/* p. 35, table A-23, ISO/IEC FDIS154444-1 : 2000 (18 august 2000) */
l_pdx = l_tccp->prcw[resno];
@ -1312,6 +1291,7 @@ OPJ_UINT32 opj_tcd_get_decoded_tile_size(opj_tcd_t *p_tcd,
l_img_comp = p_tcd->image->comps;
for (i = 0; i < p_tcd->image->numcomps; ++i) {
OPJ_UINT32 w, h;
l_size_comp = l_img_comp->prec >> 3; /*(/ 8)*/
l_remaining = l_img_comp->prec & 7; /* (%8) */
@ -1325,12 +1305,16 @@ OPJ_UINT32 opj_tcd_get_decoded_tile_size(opj_tcd_t *p_tcd,
l_res = l_tile_comp->resolutions + l_tile_comp->minimum_num_resolutions - 1;
if (take_into_account_partial_decoding && !p_tcd->whole_tile_decoding) {
l_temp = (l_res->win_x1 - l_res->win_x0) *
(l_res->win_y1 - l_res->win_y0);
w = l_res->win_x1 - l_res->win_x0;
h = l_res->win_y1 - l_res->win_y0;
} else {
l_temp = (OPJ_UINT32)((l_res->x1 - l_res->x0) * (l_res->y1 -
l_res->y0)); /* x1*y1 can't overflow */
w = (OPJ_UINT32)(l_res->x1 - l_res->x0);
h = (OPJ_UINT32)(l_res->y1 - l_res->y0);
}
if (h > 0 && UINT_MAX / w < h) {
return UINT_MAX;
}
l_temp = w * h;
if (l_size_comp && UINT_MAX / l_size_comp < l_temp) {
return UINT_MAX;
}
@ -1473,7 +1457,31 @@ OPJ_BOOL opj_tcd_decode_tile(opj_tcd_t *p_tcd,
if (p_tcd->whole_tile_decoding) {
for (compno = 0; compno < p_tcd->image->numcomps; compno++) {
if (!opj_alloc_tile_component_data(&(p_tcd->tcd_image->tiles->comps[compno]))) {
opj_tcd_tilecomp_t* tilec = &(p_tcd->tcd_image->tiles->comps[compno]);
opj_tcd_resolution_t *l_res = &
(tilec->resolutions[tilec->minimum_num_resolutions - 1]);
OPJ_UINT32 l_data_size;
/* compute l_data_size with overflow check */
OPJ_UINT32 res_w = (OPJ_UINT32)(l_res->x1 - l_res->x0);
OPJ_UINT32 res_h = (OPJ_UINT32)(l_res->y1 - l_res->y0);
/* issue 733, l_data_size == 0U, probably something wrong should be checked before getting here */
if (res_h > 0 && res_w > (((OPJ_UINT32) - 1) / res_h)) {
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory for tile data\n");
return OPJ_FALSE;
}
l_data_size = res_w * res_h;
if ((((OPJ_UINT32) - 1) / (OPJ_UINT32)sizeof(OPJ_UINT32)) < l_data_size) {
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory for tile data\n");
return OPJ_FALSE;
}
l_data_size *= (OPJ_UINT32)sizeof(OPJ_UINT32);
tilec->data_size_needed = l_data_size;
if (!opj_alloc_tile_component_data(tilec)) {
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory for tile data\n");
return OPJ_FALSE;
}