Add individual functions to set/get coonfiguration parameters

Inspired by discussion in #126, thanks to @zdiff

config.go

@@ -20,6 +20,8 @@ const (
 )
 
 // SetConfiguration sets a global YARA configuration option.
+//
+// Deprecated. Use the specialized SetConfig* functions instead.
 func SetConfiguration(name ConfigName, src interface{}) error {
 	i, ok := src.(int)
 	if !ok {
@@ -31,6 +33,8 @@ func SetConfiguration(name ConfigName, src interface{}) error {
 }
 
 // GetConfiguration gets a global YARA configuration option.
+//
+// Deprecated. Use the specialized GetConfig* functions instead.
 func GetConfiguration(name ConfigName) (interface{}, error) {
 	var u C.uint32_t
 	if err := newError(C.yr_get_configuration(
@@ -40,3 +44,75 @@ func GetConfiguration(name ConfigName) (interface{}, error) {
 	}
 	return int(u), nil
 }
+
+// SetConfigStackSize sets the size of the stack used by the bytecode interpreter.
+func SetConfigStackSize(val uint32) error {
+	u := (C.uint32_t)(val)
+	return newError(
+		C.yr_set_configuration(C.YR_CONFIG_STACK_SIZE, unsafe.Pointer(&u)))
+}
+
+// GetConfigStackSize returns the size of the stack used by the bytecode interpreter.
+func GetConfigStackSize() (uint32, error) {
+	var u C.uint32_t
+	if err := newError(C.yr_get_configuration(
+		C.YR_CONFIG_STACK_SIZE, unsafe.Pointer(&u)),
+	); err != nil {
+		return nil, err
+	}
+	return uint32(u), nil
+}
+
+// SetConfigMaxMatchData sets the maximum number of data copies per scan.
+func SetConfigMaxMatchData(val uint32) error {
+	u := (C.uint32_t)(val)
+	return newError(
+		C.yr_set_configuration(C.YR_CONFIG_MATCH_DATA, unsafe.Pointer(&u)))
+}
+
+// GetConfigMaxMatchData returns the maximum number of data copies per scan.
+func GetConfigMaxMatchData() (uint32, error) {
+	var u C.uint32_t
+	if err := newError(C.yr_get_configuration(
+		C.YR_CONFIG_MATCH_DATA, unsafe.Pointer(&u)),
+	); err != nil {
+		return nil, err
+	}
+	return uint32(u), nil
+}
+
+// SetConfigMaxStringsPerRule sets the maximum number of string that can match per rule.
+func SetConfigMaxStringsPerRule(val uint32) error {
+	u := (C.uint32_t)(val)
+	return newError(
+		C.yr_set_configuration(C.YR_CONFIG_MAX_STRINGS_PER_RULE, unsafe.Pointer(&u)))
+}
+
+// GetConfigMaxStringsPerRule returns the maximum number of string that can match per rule.
+func GetConfigMaxStringsPerRule() (uint32, error) {
+	var u C.uint32_t
+	if err := newError(C.yr_get_configuration(
+		C.YR_CONFIG_MAX_STRINGS_PER_RULE, unsafe.Pointer(&u)),
+	); err != nil {
+		return nil, err
+	}
+	return uint32(u), nil
+}
+
+// SetConfigMaxProcessMemoryChunk sets the maximum size per scanned memory chunk.
+func SetConfigMaxProcessMemoryChunk(val uint64) error {
+	u := (C.uint32_t)(val)
+	return newError(
+		C.yr_set_configuration(C.YR_CONFIG_MAX_PROCESS_MEMORY_CHUNK, unsafe.Pointer(&u)))
+}
+
+// GetConfigMaxProcessMemoryChunk returns the maximum size per scanned memory chunk.
+func GetConfigMaxProcessMemoryChunk() (uint64, error) {
+	var u C.uint64_t
+	if err := newError(C.yr_get_configuration(
+		C.YR_CONFIG_MAX_PROCESS_MEMORY_CHUNK, unsafe.Pointer(&u)),
+	); err != nil {
+		return nil, err
+	}
+	return uint64(u), nil
+}