epub: Bail if rights.xml or encryption.xml are present (not DRM-free …

…EPUB).
ArtifexSoftware · May 5, 2015 · 2b3bd1b · 2b3bd1b
1 parent 7a04cf3
commit 2b3bd1b
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/source/html/epub-doc.c b/source/html/epub-doc.c
@@ -203,6 +203,11 @@ epub_parse_header(fz_context *ctx, epub_document *doc)
 	char ncx[2048], s[2048];
 	epub_chapter *head, *tail;
 
+	if (fz_has_archive_entry(ctx, zip, "META-INF/rights.xml"))
+		fz_throw(ctx, FZ_ERROR_GENERIC, "EPUB is locked by DRM");
+	if (fz_has_archive_entry(ctx, zip, "META-INF/encryption.xml"))
+		fz_throw(ctx, FZ_ERROR_GENERIC, "EPUB is locked by DRM");
+
 	/* parse META-INF/container.xml to find OPF */
 
 	buf = fz_read_archive_entry(ctx, zip, "META-INF/container.xml");