🔧 build(enable cppcheck on build): eliminate cppcheck error

CMakeLists.txt

@@ -22,6 +22,40 @@ if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
 	set (CMAKE_INSTALL_PREFIX "/opt/tsg/stellar" CACHE PATH "default install path" FORCE)
 endif()
 
+find_program(CMAKE_CXX_CPPCHECK NAMES cppcheck)
+if (CMAKE_CXX_CPPCHECK)
+    list(
+        APPEND CMAKE_CXX_CPPCHECK 
+            "--enable=all"
+			"--std=c++11"
+            "--error-exitcode=1"
+            "--suppress=unusedFunction"
+            "--suppress=missingInclude"
+            "--suppress=uselessAssignmentPtrArg"
+            "--suppress=unmatchedSuppression"
+            "--suppress=variableScope"
+            "--suppress=unreadVariable"
+            "--suppress=cstyleCast"
+            "--suppress=memleakOnRealloc"
+            "--suppress=constParameter"
+            "--suppress=uselessAssignmentArg"
+            "--suppress=uninitvar"
+            "--suppress=unusedStructMember"
+            "--suppress=unreachableCode"
+            "--suppress=internalAstError"
+            "--suppress=nullPointerRedundantCheck"
+            "--suppress=ctunullpointer"
+            "--suppress=redundantAssignment"
+            "--suppress=duplicateValueTernary"
+            "--suppress=funcArgOrderDifferent"
+			"--suppress=*:${PROJECT_SOURCE_DIR}/vendors/*"
+            "--suppress=*:${PROJECT_SOURCE_DIR}/deps/*"
+    )
+    set(CMAKE_C_CPPCHECK ${CMAKE_CXX_CPPCHECK})
+else()
+  message(FATAL_ERROR "Could not find the program cppcheck.")
+endif()
+
 option(ENABLE_PIC "Generate position independent code (necessary for shared libraries)" TRUE)
 option(ENABLE_WARNING_ALL "Enable all optional warnings which are desirable for normal code" TRUE)
 

src/packet/ip4_utils.h

@@ -253,7 +253,7 @@ static inline void ip4_hdr_set_opt_len(struct ip *hdr, uint8_t opt_len)
 // must be called after ip4_hdr_set_opt_len
 static inline void ip4_hdr_set_opt_data(struct ip *hdr, const char *opt_data)
 {
-    memcpy((char *)hdr + sizeof(struct ip), opt_data, ip4_hdr_get_opt_len(hdr));
+    if(opt_data)memcpy((char *)hdr + sizeof(struct ip), opt_data, ip4_hdr_get_opt_len(hdr));
 }
 
 /******************************************************************************

src/packet/packet_parse.cpp

@@ -722,11 +722,11 @@ static inline const char *parse_udp(struct packet *pkt, const char *data, uint16
     {
         return data;
     }
-    const struct udphdr *hdr = (struct udphdr *)data;
+    const struct udphdr *udp_hdr = (struct udphdr *)data;
     SET_LAYER(pkt, layer, LAYER_PROTO_UDP, sizeof(struct udphdr), data, len, 0);
 
-    uint16_t src_port = udp_hdr_get_src_port(hdr);
-    uint16_t dst_port = udp_hdr_get_dst_port(hdr);
+    uint16_t src_port = udp_hdr_get_src_port(udp_hdr);
+    uint16_t dst_port = udp_hdr_get_dst_port(udp_hdr);
 
     if (dst_port == 4789)
     {
@@ -772,8 +772,8 @@ static inline const char *parse_udp(struct packet *pkt, const char *data, uint16
         {
             return layer->pld_ptr;
         }
-        const struct ip6_hdr *hdr = (const struct ip6_hdr *)layer->pld_ptr;
-        if (ip6_hdr_get_version(hdr) != 6)
+        const struct ip6_hdr *ipv6_hdr = (const struct ip6_hdr *)layer->pld_ptr;
+        if (ip6_hdr_get_version(ipv6_hdr) != 6)
         {
             return layer->pld_ptr;
         }

src/session/test/gtest_sess_mgr_tcp_reassembly.cpp

@@ -51,7 +51,7 @@ struct session_manager_options opts = {
 
 static void hex_dump(const char *payload, uint32_t len)
 {
-    printf("Payload Length: %d\n", len);
+    printf("Payload Length: %u\n", len);
     for (uint32_t i = 0; i < len; i++)
     {
         if (i > 0 && i % 16 == 0)

test/packet_inject/packet_inject.cpp

@@ -377,7 +377,7 @@ static void craft_and_send_tcp_packet(struct stellar *st, struct session *sess,
     else
     {
         tcp_seq = uint32_add(pkt_exdata->tcp_ack, pkt_exdata->inc_ack);
-        tcp_ack = uint32_add(pkt_exdata->tcp_seq, pkt_exdata->tcp_payload_len + (pkt_exdata->tcp_flags & TH_SYN ? 1 : 0));
+        tcp_ack = uint32_add(pkt_exdata->tcp_seq, pkt_exdata->tcp_payload_len + ((pkt_exdata->tcp_flags & TH_SYN) ? 1 : 0));
 
         pkt_exdata->inc_ack += tcp_payload_len;
         pkt_exdata->inc_ack += (tcp_flags & TH_FIN) ? 1 : 0; // inject RST packer after FIN packer, ack should be increased by 1

test/packet_tool/packet_tool.cpp

@@ -279,13 +279,8 @@ static void usage(char *cmd)
 int main(int argc, char **argv)
 {
     int opt = 0;
-<<<<<<< HEAD
     struct runtime rte = {0};
     while ((opt = getopt(argc, argv, "f:tvh")) != -1)
-=======
-    struct runtime rte = {};
-    while ((opt = getopt(argc, argv, "f:tvch")) != -1)
->>>>>>> 654eee3 (🔧 build(compile Werror): reduce warning)
     {
         switch (opt)
         {