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From 614514f577bbe676f736afcd8065892df8391315 Mon Sep 17 00:00:00 2001
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From: Marek Kasik <mkasik@redhat.com>
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Date: Fri, 20 Apr 2018 11:38:13 +0200
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Subject: [PATCH] Fix crash on missing embedded file
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Check whether an embedded file is actually present in the PDF
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and show warning in that case.
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https://bugs.freedesktop.org/show_bug.cgi?id=106137
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https://gitlab.freedesktop.org/poppler/poppler/issues/236
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---
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glib/poppler-attachment.cc | 26 +++++++++++++++++---------
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glib/poppler-document.cc | 3 ++-
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2 files changed, 19 insertions(+), 10 deletions(-)
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diff --git a/glib/poppler-attachment.cc b/glib/poppler-attachment.cc
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index c6502e9d..11ba5bb5 100644
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--- a/glib/poppler-attachment.cc
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+++ b/glib/poppler-attachment.cc
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@@ -111,17 +111,25 @@ _poppler_attachment_new (FileSpec *emb_file)
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attachment->description = _poppler_goo_string_to_utf8 (emb_file->getDescription ());
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embFile = emb_file->getEmbeddedFile();
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- attachment->size = embFile->size ();
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+ if (embFile != NULL && embFile->streamObject()->isStream())
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+ {
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+ attachment->size = embFile->size ();
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- if (embFile->createDate ())
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- _poppler_convert_pdf_date_to_gtime (embFile->createDate (), (time_t *)&attachment->ctime);
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- if (embFile->modDate ())
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- _poppler_convert_pdf_date_to_gtime (embFile->modDate (), (time_t *)&attachment->mtime);
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+ if (embFile->createDate ())
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+ _poppler_convert_pdf_date_to_gtime (embFile->createDate (), (time_t *)&attachment->ctime);
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+ if (embFile->modDate ())
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+ _poppler_convert_pdf_date_to_gtime (embFile->modDate (), (time_t *)&attachment->mtime);
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- if (embFile->checksum () && embFile->checksum ()->getLength () > 0)
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- attachment->checksum = g_string_new_len (embFile->checksum ()->getCString (),
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- embFile->checksum ()->getLength ());
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- priv->obj_stream = embFile->streamObject()->copy();
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+ if (embFile->checksum () && embFile->checksum ()->getLength () > 0)
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+ attachment->checksum = g_string_new_len (embFile->checksum ()->getCString (),
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+ embFile->checksum ()->getLength ());
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+ priv->obj_stream = embFile->streamObject()->copy();
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+ }
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+ else
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+ {
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+ g_warning ("Missing stream object for embedded file");
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+ g_clear_object (&attachment);
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+ }
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return attachment;
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}
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diff --git a/glib/poppler-document.cc b/glib/poppler-document.cc
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index b343eb90..df0aa47f 100644
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--- a/glib/poppler-document.cc
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+++ b/glib/poppler-document.cc
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@@ -666,7 +666,8 @@ poppler_document_get_attachments (PopplerDocument *document)
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attachment = _poppler_attachment_new (emb_file);
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delete emb_file;
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- retval = g_list_prepend (retval, attachment);
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+ if (attachment != NULL)
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+ retval = g_list_prepend (retval, attachment);
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}
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return g_list_reverse (retval);
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}
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--
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2.17.0
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