Fixup some rule parser memleaks

src/detect-content.c

@@ -48,7 +48,7 @@
 int DetectContentMatch (ThreadVars *, PatternMatcherThread *, Packet *, Signature *, SigMatch *);
 int DetectContentSetup (DetectEngineCtx *, Signature *, SigMatch *, char *);
 void DetectContentRegisterTests(void);
-void DetectContentFree(DetectContentData *);
+void DetectContentFree(void *);
 
 uint8_t nocasetable[256];
 #define _nc(c) nocasetable[(c)]
@@ -57,7 +57,7 @@ void DetectContentRegister (void) {
     sigmatch_table[DETECT_CONTENT].name = "content";
     sigmatch_table[DETECT_CONTENT].Match = DetectContentMatch;
     sigmatch_table[DETECT_CONTENT].Setup = DetectContentSetup;
-    sigmatch_table[DETECT_CONTENT].Free  = NULL;
+    sigmatch_table[DETECT_CONTENT].Free  = DetectContentFree;
     sigmatch_table[DETECT_CONTENT].RegisterTests = DetectContentRegisterTests;
 
     /* create table for O(1) case conversion lookup */
@@ -440,7 +440,15 @@ error:
  *
  * \param cd pointer to DetectCotentData
  */
-void DetectContentFree(DetectContentData *cd) {
+void DetectContentFree(void *ptr) {
+    DetectContentData *cd = (DetectContentData *)ptr;
+
+    if (cd == NULL)
+        return;
+
+    if (cd->content != NULL)
+        free(cd->content);
+
     free(cd);
 }
 

src/detect-flow.c

@@ -30,7 +30,7 @@ static pcre_extra *parse_regex_study;
 int DetectFlowMatch (ThreadVars *, PatternMatcherThread *, Packet *, Signature *, SigMatch *);
 int DetectFlowSetup (DetectEngineCtx *, Signature *, SigMatch *, char *);
 void DetectFlowRegisterTests(void);
-void DetectFlowFree(DetectFlowData *);
+void DetectFlowFree(void *);
 
 /**
  * \brief Registration function for flow: keyword
@@ -40,7 +40,7 @@ void DetectFlowRegister (void) {
     sigmatch_table[DETECT_FLOW].name = "flow";
     sigmatch_table[DETECT_FLOW].Match = DetectFlowMatch;
     sigmatch_table[DETECT_FLOW].Setup = DetectFlowSetup;
-    sigmatch_table[DETECT_FLOW].Free  = NULL;
+    sigmatch_table[DETECT_FLOW].Free  = DetectFlowFree;
     sigmatch_table[DETECT_FLOW].RegisterTests = DetectFlowRegisterTests;
 
     const char *eb;
@@ -291,7 +291,8 @@ error:
  *
  * \param fd pointer to DetectFlowData
  */
-void DetectFlowFree(DetectFlowData *fd) {
+void DetectFlowFree(void *ptr) {
+    DetectFlowData *fd = (DetectFlowData *)ptr;
     free(fd);
 }
 

src/detect-flowbits.c

@@ -38,12 +38,13 @@ static pcre_extra *parse_regex_study;
 
 int DetectFlowbitMatch (ThreadVars *, PatternMatcherThread *, Packet *, Signature *, SigMatch *);
 int DetectFlowbitSetup (DetectEngineCtx *, Signature *, SigMatch *, char *);
+void DetectFlowbitFree (void *);
 
 void DetectFlowbitsRegister (void) {
     sigmatch_table[DETECT_FLOWBITS].name = "flowbits";
     sigmatch_table[DETECT_FLOWBITS].Match = DetectFlowbitMatch;
     sigmatch_table[DETECT_FLOWBITS].Setup = DetectFlowbitSetup;
-    sigmatch_table[DETECT_FLOWBITS].Free  = NULL;
+    sigmatch_table[DETECT_FLOWBITS].Free  = DetectFlowbitFree;
     sigmatch_table[DETECT_FLOWBITS].RegisterTests  = NULL;
 
     const char *eb;
@@ -209,4 +210,12 @@ error:
     return -1;
 }
 
+void DetectFlowbitFree (void *ptr) {
+    DetectFlowbitsData *fd = (DetectFlowbitsData *)ptr;
+
+    if (fd == NULL)
+        return;
+
+    free(fd);
+}
 

src/detect-pcre.c

@@ -25,7 +25,7 @@ static pcre_extra *parse_capture_regex_study;
 
 int DetectPcreMatch (ThreadVars *, PatternMatcherThread *, Packet *, Signature *, SigMatch *);
 int DetectPcreSetup (DetectEngineCtx *, Signature *, SigMatch *, char *);
-int DetectPcreFree(SigMatch *);
+void DetectPcreFree(void *);
 
 void DetectPcreRegister (void) {
     sigmatch_table[DETECT_PCRE].name = "pcre";
@@ -351,14 +351,14 @@ error:
     return -1;
 }
 
-int DetectPcreFree(SigMatch *sm) {
-    DetectPcreData *pd = (DetectPcreData *)sm->ctx;
+void DetectPcreFree(void *ptr) {
+    DetectPcreData *pd = (DetectPcreData *)ptr;
 
     if (pd->capname != NULL) free(pd->capname);
     if (pd->re != NULL) pcre_free(pd->re);
     if (pd->sd != NULL) pcre_free(pd->sd);
 
-    free(sm->ctx);
-    return 0;
+    free(pd);
+    return;
 }
 

src/detect.h

@@ -301,7 +301,7 @@ typedef struct SigMatch_ {
 typedef struct SigTableElmt_ {
     int (*Match)(ThreadVars *, PatternMatcherThread *, Packet *, Signature *, SigMatch *);
     int (*Setup)(DetectEngineCtx *, Signature *, SigMatch *, char *);
-    int (*Free)(SigMatch *);
+    void (*Free)(void *);
     void (*RegisterTests)(void);
 
     uint8_t flags;