diff options
Diffstat (limited to 'pdf/pdf_cmap_load.c')
| -rw-r--r-- | pdf/pdf_cmap_load.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/pdf/pdf_cmap_load.c b/pdf/pdf_cmap_load.c index 8ab7e646..36ca202b 100644 --- a/pdf/pdf_cmap_load.c +++ b/pdf/pdf_cmap_load.c @@ -31,6 +31,9 @@ pdf_load_embedded_cmap(pdf_document *xref, pdf_obj *stmobj) fz_var(file); fz_var(cmap); + if (pdf_obj_marked(stmobj)) + fz_throw(ctx, "Recursion in embedded cmap"); + if ((cmap = pdf_find_item(ctx, pdf_free_cmap_imp, stmobj))) { return cmap; @@ -58,7 +61,10 @@ pdf_load_embedded_cmap(pdf_document *xref, pdf_obj *stmobj) else if (pdf_is_indirect(obj)) { phase = 3; + pdf_obj_mark(obj); usecmap = pdf_load_embedded_cmap(xref, obj); + pdf_obj_unmark(obj); + phase = 4; pdf_set_usecmap(ctx, cmap, usecmap); pdf_drop_cmap(ctx, usecmap); } @@ -78,7 +84,11 @@ pdf_load_embedded_cmap(pdf_document *xref, pdf_obj *stmobj) else if (phase < 3) fz_throw(ctx, "cannot load system usecmap '%s'", pdf_to_name(obj)); else + { + if (phase == 3) + pdf_obj_unmark(obj); fz_throw(ctx, "cannot load embedded usecmap (%d %d R)", pdf_to_num(obj), pdf_to_gen(obj)); + } } return cmap; |