Add tag keyword stub

src/Makefile.am

@@ -71,6 +71,7 @@ detect-priority.c detect-priority.h \
 detect-rev.c detect-rev.h \
 detect-classtype.c detect-classtype.h \
 detect-reference.c detect-reference.h \
+detect-tag.c detect-tag.h \
 detect-threshold.c detect-threshold.h \
 detect-metadata.c detect-metadata.h \
 detect-msg.c detect-msg.h \

src/detect-tag.c

@@ -0,0 +1,20 @@
+/* TAG part of the detection engine. */
+
+#include "suricata-common.h"
+#include "detect.h"
+
+int DetectTagSetup (DetectEngineCtx *, Signature *s, SigMatch *m, char *str);
+
+void DetectTagRegister (void) {
+    sigmatch_table[DETECT_TAG].name = "tag";
+    sigmatch_table[DETECT_TAG].Match = NULL;
+    sigmatch_table[DETECT_TAG].Setup = DetectTagSetup;
+    sigmatch_table[DETECT_TAG].Free  = NULL;
+    sigmatch_table[DETECT_TAG].RegisterTests = NULL;
+}
+
+int DetectTagSetup (DetectEngineCtx *de_ctx, Signature *s, SigMatch *m, char *rawstr)
+{
+    return 0;
+}
+

src/detect-tag.h

@@ -0,0 +1,8 @@
+#ifndef __DETECT_TAG_H__
+#define __DETECT_TAG_H__
+
+/* prototypes */
+void DetectTagRegister (void);
+
+#endif /* __DETECT_TAG_H__ */
+

src/detect.c

@@ -44,6 +44,7 @@
 #include "detect-priority.h"
 #include "detect-classtype.h"
 #include "detect-reference.h"
+#include "detect-tag.h"
 #include "detect-threshold.h"
 #include "detect-metadata.h"
 #include "detect-msg.h"
@@ -2949,6 +2950,7 @@ void SigTableSetup(void) {
     DetectRevRegister();
     DetectClasstypeRegister();
     DetectReferenceRegister();
+    DetectTagRegister();
     DetectThresholdRegister();
     DetectMetadataRegister();
     DetectMsgRegister();
@@ -3000,7 +3002,7 @@ void SigTableSetup(void) {
     for (i = 0; i < DETECT_TBLSIZE; i++) {
         if (sigmatch_table[i].RegisterTests == NULL) {
             SCLogDebug("detection plugin %s has no unittest "
-                   "registration function.\n", sigmatch_table[i].name);
+                   "registration function.", sigmatch_table[i].name);
         }
     }
 }

src/detect.h

@@ -435,6 +435,7 @@ enum {
     DETECT_THRESHOLD,
     DETECT_METADATA,
     DETECT_REFERENCE,
+    DETECT_TAG,
     DETECT_MSG,
     DETECT_CONTENT,    /* 8 */
     DETECT_URICONTENT, /* 9 */