Fix leak & invalid behavior of opj_jp2_read_ihdr (#818)
In case multiple ihdr box are present, only the first one shall be taken into account.
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@ -552,6 +552,11 @@ static OPJ_BOOL opj_jp2_read_ihdr( opj_jp2_t *jp2,
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assert(jp2 != 00);
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assert(p_manager != 00);
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if (jp2->comps != NULL) {
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opj_event_msg(p_manager, EVT_WARNING, "Ignoring ihdr box. First ihdr box already read\n");
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return OPJ_TRUE;
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}
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if (p_image_header_size != 14) {
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opj_event_msg(p_manager, EVT_ERROR, "Bad image header box (bad size)\n");
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return OPJ_FALSE;
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@ -563,6 +568,11 @@ static OPJ_BOOL opj_jp2_read_ihdr( opj_jp2_t *jp2,
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p_image_header_data += 4;
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opj_read_bytes(p_image_header_data,&(jp2->numcomps),2); /* NC */
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p_image_header_data += 2;
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if ((jp2->numcomps - 1U) >= 16384U) { /* unsigned underflow is well defined: 1U <= jp2->numcomps <= 16384U */
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opj_event_msg(p_manager, EVT_ERROR, "Invalid number of components (ihdr)\n");
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return OPJ_FALSE;
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}
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/* allocate memory for components */
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jp2->comps = (opj_jp2_comps_t*) opj_calloc(jp2->numcomps, sizeof(opj_jp2_comps_t));
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@ -1764,7 +1774,7 @@ void opj_jp2_setup_decoder(opj_jp2_t *jp2, opj_dparameters_t *parameters)
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/* further JP2 initializations go here */
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jp2->color.jp2_has_colr = 0;
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jp2->ignore_pclr_cmap_cdef = parameters->flags & OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG;
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jp2->ignore_pclr_cmap_cdef = parameters->flags & OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG;
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}
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/* ----------------------------------------------------------------------- */
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@ -1810,7 +1820,6 @@ OPJ_BOOL opj_jp2_setup_encoder( opj_jp2_t *jp2,
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jp2->numcl = 1;
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jp2->cl = (OPJ_UINT32*) opj_malloc(jp2->numcl * sizeof(OPJ_UINT32));
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if (!jp2->cl){
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jp2->cl = NULL;
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opj_event_msg(p_manager, EVT_ERROR, "Not enough memory when setup the JP2 encoder\n");
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return OPJ_FALSE;
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}
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@ -1821,7 +1830,6 @@ OPJ_BOOL opj_jp2_setup_encoder( opj_jp2_t *jp2,
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jp2->numcomps = image->numcomps; /* NC */
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jp2->comps = (opj_jp2_comps_t*) opj_malloc(jp2->numcomps * sizeof(opj_jp2_comps_t));
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if (!jp2->comps) {
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jp2->comps = NULL;
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opj_event_msg(p_manager, EVT_ERROR, "Not enough memory when setup the JP2 encoder\n");
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/* Memory of jp2->cl will be freed by opj_jp2_destroy */
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return OPJ_FALSE;
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