xls: added OTF SummaryInfo and DocumentSummary streams parsing support

libclamav/ole2_extract.c

@@ -890,7 +890,7 @@ handler_enum(ole2_header_t * hdr, property_t * prop, const char *dir, cli_ctx *
 static int
 handler_otf(ole2_header_t * hdr, property_t * prop, const char *dir, cli_ctx * ctx)
 {
-    char           *tempfile;
+    char           *tempfile, *name;
     unsigned char  *buff;
     int32_t         current_block, len, offset;
     int             ofd, ret;
@@ -1000,6 +1000,19 @@ handler_otf(ole2_header_t * hdr, property_t * prop, const char *dir, cli_ctx * c
         cli_bitset_free(blk_bitset);
         return CL_ESEEK;
     }
+
+    /* JSON Parsing */
+    name = get_property_name2(prop->name, prop->name_size);
+    if (!strncmp(name, "_5_summaryinformation", 21)) {
+        cli_dbgmsg("OLE2: detected a '_5_summaryinformation' stream\n");
+        cli_ole2_summary_json(ctx, ofd, 0);
+    }
+    if (!strncmp(name, "_5_documentsummaryinformation", 29)) {
+        cli_dbgmsg("OLE2: detected a '_5_documentsummaryinformation' stream\n");
+        cli_ole2_summary_json(ctx, ofd, 1);
+    }
+
+    /* Normal File Scan */
     ret = cli_magic_scandesc(ofd, ctx);
     close(ofd);
     free(buff);