@@ -261,10 +261,20 @@ int CLAMAPI Scan_ScanObjectByHandle(CClamAVScanner *pScanner, HANDLE object, int

 /*

  * Returns the outer file type as an _int64[2] for the give HANDLE

  * Scan is not performed and no callback is invoked

+ * INPUT @param hFile : file handle whose type is to be determined

+ * OUTPUT @param filetype : result array (_int64[2])

  */

  int CLAMAPI Scan_GetFileType(HANDLE hFile, _int64 *filetype);

 /*

+ * Checks if any meaningful signature is loaded

+ * Returns 0 (false), 1 (true) or -1 (error)

+ * OUTPUT @param official : set to the number of official signatures loaded, unless NULL

+ * OUTPUT @param custom : set to the number of custom signatures loaded, unless NULL

+ */

+ int CLAMAPI Scan_HaveSigs(unsigned int *official, unsigned int *custom);

+

+/*

  * MANDATORY SUPPORT

  * Destroy memory allocated when malicious objects are found during scan

  * INPUT @param pScanner : opaque object

@@ -115,6 +115,7 @@ struct {

 } *instances = NULL;

 unsigned int ninsts_total = 0;

 unsigned int ninsts_avail = 0;

+unsigned int official_sigs, custom_sigs;

 HANDLE instance_mutex;

 BOOL minimal_definitions = FALSE;

@@ -306,6 +307,10 @@ BOOL interface_setup(void) {

 static int sigload_callback(const char *type, const char *name, unsigned int custom, void *context) {

     if(minimal_definitions && (custom || strcmp(type, "fp")))

 	return 1;

+    if(custom)

+	custom_sigs++;

+    else if(strcmp(type, "fp"))

+	official_sigs++;

     return 0;

 }

@@ -361,6 +366,7 @@ static int load_db(void) {

     INFN();

     cl_engine_set_clcb_sigload(engine, sigload_callback, NULL);

+    official_sigs = custom_sigs = 0;

     if((ret = cl_load(dbdir, engine, &signo, CL_DB_STDOPT & ~CL_DB_PHISHING & ~CL_DB_PHISHING_URLS)) != CL_SUCCESS) {

 	cl_engine_free(engine);

 	engine = NULL;

@@ -382,6 +388,21 @@ static int load_db(void) {

     WIN();

 }

+int CLAMAPI Scan_HaveSigs(unsigned int *official, unsigned int *custom) {

+    int ret;

+    if(lock_engine())

+	FAIL(-1, "failed to lock engine");

+    if(!engine) {

+	unlock_engine();

+	FAIL(-1, "No engine available");

+    }

+    ret = ((official_sigs + custom_sigs) > 0);

+    if(official) *official = official_sigs;

+    if(custom) *custom = custom_sigs;

+    unlock_engine();

+    return ret;

+}

+

 static void free_engine_and_unlock(void) {

     cl_engine_free(engine);

     engine = NULL;