- removed some warnings and code cleanup

Makefile

@@ -122,7 +122,7 @@ LIB_SOURCES = $(call get_sources,$(LIB_SOURCE_DIRS))
 LIB_OBJS = $(call src_to,.o,$(LIB_SOURCES))
 
 CFLAGS += -std=gnu99
-#CFLAGS += -Wno-error=format 
+CFLAGS += -Wno-error=format 
 CFLAGS += -Wstrict-prototypes
 
 ifneq ($(HAL_IMPL), WIN32)
@@ -136,6 +136,8 @@ CFLAGS += -Wmissing-declarations
 CFLAGS += -Wshadow
 CFLAGS += -Wall
 CFLAGS += -Wextra
+CFLAGS += -Wno-format
+#CFLAGS += -Wconditional-uninitialized
 #CFLAGS += -Werror  
 
 all:	lib

hal/ethernet/linux/ethernet_linux.c

@@ -125,7 +125,7 @@ getInterfaceIndex(int sock, const char* deviceName)
 {
     struct ifreq ifr;
 
-    strncpy(ifr.ifr_name, deviceName, IFNAMSIZ);
+    strncpy(ifr.ifr_name, deviceName, IFNAMSIZ - 1);
 
     if (ioctl(sock, SIOCGIFINDEX, &ifr) == -1) {
         if (DEBUG_SOCKET)
@@ -163,7 +163,7 @@ Ethernet_getInterfaceMACAddress(const char* interfaceId, uint8_t* addr)
 
     memset(&buffer, 0x00, sizeof(buffer));
 
-    strncpy(buffer.ifr_name, interfaceId, IFNAMSIZ);
+    strncpy(buffer.ifr_name, interfaceId, IFNAMSIZ - 1);
 
     ioctl(sock, SIOCGIFHWADDR, &buffer);
 

hal/inc/hal_ethernet.h

@@ -83,7 +83,7 @@ EthernetHandleSet_removeSocket(EthernetHandleSet self, const EthernetSocket sock
  * The function will return after \p timeoutMs ms if no data is pending.
  *
  * \param self the HandleSet instance
- * \param timeout in milliseconds (ms)
+ * \param timeoutMs in milliseconds (ms)
  * \return It returns the number of sockets on which data is pending
  *   or 0 if no data is pending on any of the monitored connections.
  *   The function shall return -1 if a socket error occures.
@@ -145,7 +145,7 @@ Ethernet_setProtocolFilter(EthernetSocket ethSocket, uint16_t etherType);
  *
  * \param ethSocket the ethernet socket handle
  * \param buffer the buffer to copy the message to
- * \param the maximum size of the buffer
+ * \param bufferSize the maximum size of the buffer
  *
  * \return size of message received in bytes
  */

hal/serial/linux/serial_port_linux.c

@@ -62,7 +62,7 @@ SerialPort_create(const char* interfaceName, int baudRate, uint8_t dataBits, cha
         self->lastSentTime = 0;
         self->timeout.tv_sec = 0;
         self->timeout.tv_usec = 100000; /* 100 ms */
-        strncpy(self->interfaceName, interfaceName, 100);
+        strncpy(self->interfaceName, interfaceName, 99);
         self->lastError = SERIAL_PORT_ERROR_NONE;
     }
 

src/common/inc/linked_list.h

@@ -1,7 +1,7 @@
 /*
  *  linked_list.h
  *
- *  Copyright 2013-2018 Michael Zillgith
+ *  Copyright 2013-2021 Michael Zillgith
  *
  *  This file is part of libIEC61850.
  *
@@ -153,7 +153,7 @@ LinkedList_getNext(LinkedList self);
 /**
  * \brief Get the last element in the list.
  *
- * \param listElement the LinkedList instance
+ * \param self the LinkedList instance
  */
 LIB61850_API LinkedList
 LinkedList_getLastElement(LinkedList self);

src/common/string_utilities.c

@@ -271,7 +271,7 @@ getCharWeight(int c)
 {
 	static bool initialized = false;
 	static char lookupTable[LT_MAX_CHARS + 1];
-	static char* charOrder = "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz$_0123456789";
+	static const char* charOrder = "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz$_0123456789";
 
 	if (!initialized) {
 		int ltIndex;

src/goose/goose_receiver.c

@@ -574,7 +574,7 @@ parseGoosePayload(GooseReceiver self, uint8_t* buffer, int apduLength)
     uint32_t timeAllowedToLive = 0;
     uint32_t stNum = 0;
     uint32_t sqNum = 0;
-    uint32_t confRev;
+    uint32_t confRev = 0;
     bool simulation = false;
     bool ndsCom = false;
     GooseSubscriber matchingSubscriber = NULL;

src/iec61850/client/ied_connection.c

@@ -1191,7 +1191,7 @@ IedConnection_readObject(IedConnection self, IedClientError* error, const char*
         return NULL;
     }
 
-    MmsError mmsError;
+    MmsError mmsError = MMS_ERROR_NONE;
 
     /* check if item ID contains an array "(..)" */
     char* brace = strchr(itemId, '(');
@@ -2482,22 +2482,20 @@ IedConnection_getLogicalNodeDirectory(IedConnection self, IedClientError* error,
 
     LinkedList device = LinkedList_getNext(self->logicalDevices);
 
-    bool deviceFound = false;
+    ICLogicalDevice* ld = NULL;
-
-    ICLogicalDevice* ld;
 
     while (device != NULL) {
-        ld = (ICLogicalDevice*) device->data;
+        ICLogicalDevice* ldCandidate = (ICLogicalDevice*) device->data;
 
-        if (strcmp(logicalDeviceName, ld->name) == 0) {
+        if (strcmp(logicalDeviceName, ldCandidate->name) == 0) {
-            deviceFound = true;
+            ld = ldCandidate;
             break;
         }
 
         device = LinkedList_getNext(device);
     }
 
-    if (!deviceFound) {
+    if (ld == NULL) {
         *error = IED_ERROR_OBJECT_REFERENCE_INVALID;
         return NULL;
     }
@@ -2630,22 +2628,20 @@ IedConnection_getLogicalNodeVariables(IedConnection self, IedClientError* error,
 
     LinkedList device = LinkedList_getNext(self->logicalDevices);
 
-    bool deviceFound = false;
+    ICLogicalDevice* ld = NULL;
-
-    ICLogicalDevice* ld;
 
     while (device != NULL) {
-        ld = (ICLogicalDevice*) device->data;
+        ICLogicalDevice* ldCandidate = (ICLogicalDevice*) device->data;
 
-        if (strcmp(logicalDeviceName, ld->name) == 0) {
+        if (strcmp(logicalDeviceName, ldCandidate->name) == 0) {
-            deviceFound = true;
+            ld = ldCandidate;
             break;
         }
 
         device = LinkedList_getNext(device);
     }
 
-    if (!deviceFound) {
+    if (ld == NULL) {
         *error = IED_ERROR_OBJECT_REFERENCE_INVALID;
         return NULL;
     }
@@ -2731,22 +2727,20 @@ getDataDirectory(IedConnection self, IedClientError* error,
 
     LinkedList device = LinkedList_getNext(self->logicalDevices);
 
-    bool deviceFound = false;
+    ICLogicalDevice* ld = NULL;
-
-    ICLogicalDevice* ld;
 
     while (device != NULL) {
-        ld = (ICLogicalDevice*) device->data;
+        ICLogicalDevice* ldCandidate = (ICLogicalDevice*) device->data;
 
-        if (strcmp(logicalDeviceName, ld->name) == 0) {
+        if (strcmp(logicalDeviceName, ldCandidate->name) == 0) {
-            deviceFound = true;
+            ld = ldCandidate;
             break;
         }
 
         device = LinkedList_getNext(device);
     }
 
-    if (!deviceFound) {
+    if (ld == NULL) {
         *error = IED_ERROR_OBJECT_REFERENCE_INVALID;
         return NULL;
     }
@@ -2900,22 +2894,20 @@ getDataDirectoryByFc(IedConnection self, IedClientError* error,
 
     LinkedList device = LinkedList_getNext(self->logicalDevices);
 
-    bool deviceFound = false;
+    ICLogicalDevice* ld = NULL;
-
-    ICLogicalDevice* ld;
 
     while (device != NULL) {
-        ld = (ICLogicalDevice*) device->data;
+        ICLogicalDevice* ldCandidate = (ICLogicalDevice*) device->data;
 
-        if (strcmp(logicalDeviceName, ld->name) == 0) {
+        if (strcmp(logicalDeviceName, ldCandidate->name) == 0) {
-            deviceFound = true;
+            ld = ldCandidate;
             break;
         }
 
         device = LinkedList_getNext(device);
     }
 
-    if (!deviceFound) {
+    if (ld == NULL) {
         *error = IED_ERROR_OBJECT_REFERENCE_INVALID;
         return NULL;
     }

src/iec61850/server/mms_mapping/control.c

@@ -678,10 +678,12 @@ operateControl(ControlObject* self, MmsValue* value, uint64_t currentTime, bool
 static void
 resetAddCause(ControlObject* self)
 {
+    if (self) {
         self->addCauseValue = ADD_CAUSE_UNKNOWN;
 
         MmsValue_setInt32(self->addCause, self->addCauseValue);
     }
+}
 
 static void
 executeControlTask(MmsMapping* self, ControlObject* controlObject, uint64_t currentTimeInMs)
@@ -1869,6 +1871,7 @@ Control_writeAccessControlObject(MmsMapping* self, MmsDomain* domain, char* vari
 {
     MmsDataAccessError indication = DATA_ACCESS_ERROR_OBJECT_ACCESS_DENIED;
     IEC61850_ServiceError serviceError = IEC61850_SERVICE_ERROR_NO_ERROR;
+    ControlObject* controlObject = NULL;
 
     if (DEBUG_IED_SERVER)
         printf("IED_SERVER: writeAccessControlObject: %s\n", variableIdOrig);
@@ -1935,7 +1938,7 @@ Control_writeAccessControlObject(MmsMapping* self, MmsDomain* domain, char* vari
         goto free_and_return;
     }
 
-    ControlObject* controlObject = Control_lookupControlObject(self, domain, lnName, objectName);
+    controlObject = Control_lookupControlObject(self, domain, lnName, objectName);
 
     if (controlObject == NULL) {
         indication = DATA_ACCESS_ERROR_OBJECT_ACCESS_DENIED;

src/iec61850/server/mms_mapping/reporting.c

@@ -1410,7 +1410,7 @@ convertIPv4AddressStringToByteArray(const char* clientAddressString, uint8_t ipV
 {
     int addrElementCount = 0;
 
-    char* separator = (char*) clientAddressString;
+    const char* separator = clientAddressString;
 
     while (separator != NULL && addrElementCount < 4) {
         int intVal = atoi(separator);

src/mms/asn1/ber_encoder.c

@@ -37,15 +37,15 @@ BerEncoder_encodeLength(uint32_t length, uint8_t* buffer, int bufPos)
     else if (length < 65535) {
         buffer[bufPos++] = 0x82;
 
-        buffer[bufPos++] = length / 256;
+        buffer[bufPos++] = (uint8_t) (length / 256);
-        buffer[bufPos++] = length % 256;
+        buffer[bufPos++] = (uint8_t) (length % 256);
     }
     else {
         buffer[bufPos++] = 0x83;
 
-        buffer[bufPos++] = length / 0x10000;
+        buffer[bufPos++] = (uint8_t) (length / 0x10000);
-        buffer[bufPos++] = (length & 0xffff) / 0x100;
+        buffer[bufPos++] = (uint8_t) ((length & 0xffff) / 0x100);
-        buffer[bufPos++] = length % 256;
+        buffer[bufPos++] = (uint8_t) (length % 256);
     }
 
     return bufPos;
@@ -80,13 +80,13 @@ BerEncoder_encodeStringWithTag(uint8_t tag, const char* string, uint8_t* buffer,
     buffer[bufPos++] = tag;
 
     if (string != NULL) {
-        int length = strlen(string);
+        int length = (int) strlen(string);
 
-        bufPos = BerEncoder_encodeLength(length, buffer, bufPos);
+        bufPos = BerEncoder_encodeLength((uint32_t) length, buffer, bufPos);
 
         int i;
         for (i = 0; i < length; i++) {
-            buffer[bufPos++] = string[i];
+            buffer[bufPos++] = (uint8_t) string[i];
         }
     }
     else
@@ -316,8 +316,7 @@ int
 BerEncoder_encodeFloat(uint8_t* floatValue, uint8_t formatWidth, uint8_t exponentWidth,
         uint8_t* buffer, int bufPos)
 {
-    /* TODO operate on encoding buffer directly */
+    uint8_t* valueBuffer = buffer + bufPos;
-    uint8_t valueBuffer[9];
 
     int byteSize = formatWidth / 8;
 
@@ -332,9 +331,7 @@ BerEncoder_encodeFloat(uint8_t* floatValue, uint8_t formatWidth, uint8_t exponen
     BerEncoder_revertByteOrder(valueBuffer + 1, byteSize);
 #endif
 
-    for (i = 0; i < byteSize + 1; i++) {
+    bufPos = bufPos + 1 + byteSize;
-        buffer[bufPos++] = valueBuffer[i];
-    }
 
     return bufPos;
 }

src/mms/iso_acse/acse.c

@@ -418,7 +418,7 @@ AcseConnection_init(AcseConnection* self, AcseAuthenticator authenticator, void*
 AcseIndication
 AcseConnection_parseMessage(AcseConnection* self, ByteBuffer* message)
 {
-    AcseIndication indication;
+    AcseIndication indication = ACSE_ERROR;
 
     uint8_t* buffer = message->buffer;
 

src/mms/iso_mms/asn1c/ber_decoder.c

@@ -70,7 +70,7 @@ ber_check_tags(asn_codec_ctx_t *opt_codec_ctx,
 	ssize_t tag_len;
 	ssize_t len_len;
 	ber_tlv_tag_t tlv_tag;
-	ber_tlv_len_t tlv_len;
+	ber_tlv_len_t tlv_len = -1;
 	ber_tlv_len_t limit_len = -1;
 	int expect_00_terminators = 0;
 	int tlv_constr = -1;	/* If CHOICE, opt_tlv_form is not given */

src/mms/iso_mms/common/mms_value.c

@@ -654,7 +654,7 @@ void
 MmsValue_setInt16(MmsValue* self, int16_t integer)
 {
     if (self->type == MMS_INTEGER) {
-        if (Asn1PrimitiveValue_getMaxSize(self->value.integer) >= 1) {
+        if (Asn1PrimitiveValue_getMaxSize(self->value.integer) >= 2) {
             BerInteger_setInt32(self->value.integer, (int32_t) integer);
         }
     }

src/mms/iso_mms/server/mms_access_result.c

@@ -1,7 +1,7 @@
 /*
  *  mms_access_result.c
  *
- *  Copyright 2013, 2016 Michael Zillgith
+ *  Copyright 2013-2021 Michael Zillgith
  *
  *  This file is part of libIEC61850.
  *
@@ -329,7 +329,7 @@ exit_with_error:
 int
 MmsValue_encodeMmsData(MmsValue* self, uint8_t* buffer, int bufPos, bool encode)
 {
-    int size;
+    int size = 0;
 
     switch (self->type) {
     case MMS_BOOLEAN:
@@ -446,4 +446,3 @@ MmsValue_encodeMmsData(MmsValue* self, uint8_t* buffer, int bufPos, bool encode)
     else
         return size;
 }
-

src/mms/iso_mms/server/mms_get_namelist_service.c

@@ -438,10 +438,10 @@ mmsServer_handleGetNameListRequest(
     int objectScope = -1;
 
     char* domainId = NULL;
-    int domainIdLength;
+    int domainIdLength = 0;
 
     char* continueAfter = NULL;
-    int continueAfterLength;
+    int continueAfterLength = 0;
 
     while (bufPos < maxBufPos) {
         uint8_t tag = buffer[bufPos++];

src/mms/iso_server/iso_server.c

@@ -705,7 +705,7 @@ IsoServer_startListeningThreadless(IsoServer self)
 int
 IsoServer_waitReady(IsoServer self, unsigned int timeoutMs)
 {
-   int result;
+   int result = -1;
 
    if (getState(self) == ISO_SVR_STATE_RUNNING) {
 
@@ -717,8 +717,6 @@ IsoServer_waitReady(IsoServer self, unsigned int timeoutMs)
                printf("ISO_SERVER: internal error - no handleset!\n");
        }
 
-   } else {
-       result = -1;
    }
 
    return result;

src/sampled_values/sv_subscriber.c

@@ -22,6 +22,7 @@
  */
 
 #include "stack_config.h"
+#include <inttypes.h>
 
 #include "libiec61850_platform_includes.h"
 
@@ -355,8 +356,10 @@ parseASDU(SVReceiver self, SVSubscriber subscriber, uint8_t* buffer, int length)
         
         if (SVSubscriber_ASDU_hasDatSet(&asdu))
             printf("SV_SUBSCRIBER:     DatSet: %s\n", asdu.datSet);
+#ifdef PRIu64
         if (SVSubscriber_ASDU_hasRefrTm(&asdu))
-            printf("SV_SUBSCRIBER:     RefrTm[ns]: %llu\n", SVSubscriber_ASDU_getRefrTmAsNs(&asdu));
+            printf("SV_SUBSCRIBER:     RefrTm[ns]: %"PRIu64"\n", SVSubscriber_ASDU_getRefrTmAsNs(&asdu));
+#endif
         if (SVSubscriber_ASDU_hasSmpMod(&asdu))
             printf("SV_SUBSCRIBER:     SmpMod: %d\n", SVSubscriber_ASDU_getSmpMod(&asdu));
         if (SVSubscriber_ASDU_hasSmpRate(&asdu))
@@ -455,7 +458,6 @@ static void
 parseSVMessage(SVReceiver self, int numbytes)
 {
     int bufPos;
-    bool subscriberFound = false;
     uint8_t* buffer = self->buffer;
 
     if (numbytes < 22) return;
@@ -507,25 +509,24 @@ parseSVMessage(SVReceiver self, int numbytes)
         printf("SV_SUBSCRIBER:   APDU length: %i\n", apduLength);
     }
 
-
     /* check if there is a matching subscriber */
 
 #if (CONFIG_MMS_THREADLESS_STACK == 0)
     Semaphore_wait(self->subscriberListLock);
 #endif
 
-    LinkedList element = LinkedList_getNext(self->subscriberList);
+    SVSubscriber subscriber = NULL;
 
-    SVSubscriber subscriber;
+    LinkedList element = LinkedList_getNext(self->subscriberList);
 
     while (element != NULL) {
-        subscriber = (SVSubscriber) LinkedList_getData(element);
+        SVSubscriber subscriberElem = (SVSubscriber) LinkedList_getData(element);
 
-        if (subscriber->appId == appId) {
+        if (subscriberElem->appId == appId) {
 
             if (self->checkDestAddr) {
-                if (memcmp(dstAddr, subscriber->ethAddr, 6) == 0) {
+                if (memcmp(dstAddr, subscriberElem->ethAddr, 6) == 0) {
-                    subscriberFound = true;
+                    subscriber = subscriberElem;
                     break;
                 }
                 else
@@ -533,11 +534,10 @@ parseSVMessage(SVReceiver self, int numbytes)
                         printf("SV_SUBSCRIBER: Checking ethernet dest address failed!\n");
             }
             else {
-                subscriberFound = true;
+                subscriber = subscriberElem;
                 break;
             }
 
-
         }
 
         element = LinkedList_getNext(element);
@@ -547,8 +547,7 @@ parseSVMessage(SVReceiver self, int numbytes)
     Semaphore_post(self->subscriberListLock);
 #endif
 
-
+    if (subscriber)
-    if (subscriberFound)
         parseSVPayload(self, subscriber, buffer + bufPos, apduLength);
     else {
         if (DEBUG_SV_SUBSCRIBER)