1 files changed, 54 insertions, 0 deletions
diff --git a/src/detect-dsize.h b/src/detect-dsize.h
new file mode 100644
index 0000000..c262a31
--- /dev/null
+++ b/src/detect-dsize.h
@@ -0,0 +1,54 @@
+/* Copyright (C) 2007-2022 Open Information Security Foundation
+ *
+ * You can copy, redistribute or modify this Program under the terms of
+ * the GNU General Public License version 2 as published by the Free
+ * Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+/**
+ * \file
+ *
+ * \author Victor Julien <victor@inliniac.net>
+ */
+
+#ifndef __DETECT_DSIZE_H__
+#define __DETECT_DSIZE_H__
+
+#include "detect-engine-uint.h"
+
+/* prototypes */
+void DetectDsizeRegister (void);
+
+int SigParseMaxRequiredDsize(const Signature *s);
+int SigParseGetMaxDsize(const Signature *s);
+void SigParseSetDsizePair(Signature *s);
+void SigParseApplyDsizeToContent(Signature *s);
+
+/** Determine if a packet p should be kicked out during prefilter due
+ *  to dsize outside the range specified in signature s */
+static inline bool SigDsizePrefilter(const Packet *p, const Signature *s, uint32_t sflags)
+{
+    if (unlikely(sflags & SIG_FLAG_DSIZE)) {
+        if (likely(p->payload_len < s->dsize_low || p->payload_len > s->dsize_high)) {
+            if (!(s->dsize_mode == DETECT_UINT_NE)) {
+                SCLogDebug("kicked out as p->payload_len %u, dsize low %u, hi %u", p->payload_len,
+                        s->dsize_low, s->dsize_high);
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+#endif /* __DETECT_DSIZE_H__ */
+