Fix GCC warnings

args.c

@@ -88,7 +88,6 @@ static long parse_numeric_option(const char* value) {
 }
 
 static int parse_udp_dport_range(char *str, struct udp_dport_range **udpr, int *udpr_len) {
-	int ret = 0;
 	int seclen = 1;
 	const char *p = str;
 	while (*p != '\0') {
@@ -762,10 +761,12 @@ int yparse_args(int argc, char *argv[]) {
 	errno = 0;
 	return 0;
 
+#ifndef KERNEL_SPACE
 stop_exec:
 	free_config(rep_config);
 	errno = 0;
 	return 1;
+#endif
 
 invalid_opt:
 	printf("Invalid option %s\n", long_opt[optIdx].name);
@@ -995,10 +996,13 @@ size_t print_config(char *buffer, size_t buffer_size) {
 }
 
 void print_welcome(void) {
-	char welcome_message[4000];
-	
+	char *welcome_message = malloc(4000);
+	if (welcome_message == NULL) 
+		return;
+
 	size_t sz = print_config(welcome_message, 4000);
 	printf("Running with flags: %.*s\n", (int)sz, welcome_message);
+	free(welcome_message);
 	return;
 /**
 	if (config.syslog) {

kargs.c

@@ -6,6 +6,7 @@
 #include "logging.h"
 
 #define MAX_ARGC 1024
+static char *argv[MAX_ARGC];
 
 static int params_set(const char *cval, const struct kernel_param *kp) {
 	int ret = 0;
@@ -25,7 +26,6 @@ static int params_set(const char *cval, const struct kernel_param *kp) {
 	val[len] = '\0';
 
 	int argc = 0;
-	char *argv[MAX_ARGC];
 	argv[argc++] = val;
 	
 	for (int i = 0; i < len; i++) {
@@ -40,7 +40,7 @@ static int params_set(const char *cval, const struct kernel_param *kp) {
 	}
 
 	for (int i = 0; i < argc; i++) {
-		lginfo("%s %d\n", argv[i], strlen(argv[i]));
+		lginfo("%s %lu\n", argv[i], strlen(argv[i]));
 	}
 
 	ret = yparse_args(argc, argv);

mangle.c

@@ -341,7 +341,6 @@ int process_udp_packet(const struct section_config_t *section, const uint8_t *pk
 	const struct udphdr *udph;
 	const uint8_t *data;
 	uint32_t dlen;
-	int ipver = netproto_version(pkt, pktlen);
 
 	int ret = udp_payload_split((uint8_t *)pkt, pktlen,
 			      (void **)&iph, &iph_len, 
@@ -414,7 +413,6 @@ erret_lc:
 
 continue_flow:
 	return PKT_CONTINUE;
-accept_quic:
 accept:
 	return PKT_ACCEPT;
 drop:
@@ -452,6 +450,7 @@ int send_ip4_frags(const struct section_config_t *section, const uint8_t *packet
 			return -ENOMEM;
 		}
 
+/*
 		NETBUF_ALLOC(fake_pad, MAX_PACKET_SIZE);
 		if (!NETBUF_CHECK(fake_pad)) {
 			lgerror(-ENOMEM, "Allocation error");
@@ -459,10 +458,11 @@ int send_ip4_frags(const struct section_config_t *section, const uint8_t *packet
 			NETBUF_FREE(frag2);
 			return -ENOMEM;
 		}
+*/
 
 		uint32_t f1len = MAX_PACKET_SIZE;
 		uint32_t f2len = MAX_PACKET_SIZE;
-		uint32_t fake_pad_len = MAX_PACKET_SIZE;
+		// uint32_t fake_pad_len = MAX_PACKET_SIZE;
 
 		int ret;
 
@@ -538,12 +538,12 @@ send_frag2:
 out_lc:
 		NETBUF_FREE(frag1);
 		NETBUF_FREE(frag2);
-		NETBUF_FREE(fake_pad);
+		// NETBUF_FREE(fake_pad);
 		goto out;
 erret_lc:
 		NETBUF_FREE(frag1);
 		NETBUF_FREE(frag2);
-		NETBUF_FREE(fake_pad);
+		// NETBUF_FREE(fake_pad);
 		return ret;
 	}
 

quic.c

@@ -191,8 +191,6 @@ int gen_fake_udp(struct udp_fake_type type,
 		const struct udphdr *udph,
 		uint8_t *buf, uint32_t *buflen) {
 	uint32_t data_len = type.fake_len;
-	int ret;
-
 
 	if (!ipxh || !udph || !buf || !buflen)
 		return -EINVAL;
@@ -256,9 +254,6 @@ int detect_udp_filtered(const struct section_config_t *section,
 	const uint8_t *data;
 	uint32_t dlen;
 	int ret;
-	int ipver;
-
-	ipver = netproto_version(payload, plen);
 
 	ret = udp_payload_split((uint8_t *)payload, plen,
 			      (void **)&iph, &iph_len, 
@@ -291,10 +286,10 @@ int detect_udp_filtered(const struct section_config_t *section,
 		}
 
 		lgtrace_addp("QUIC detected");
-		uint8_t qtype = qch->type;
 
 		goto approve;
 
+		// uint8_t qtype = qch->type;
 		// if (qch->version == QUIC_V1)
 		// 	qtype = quic_convtype_v1(qtype);
 		// else if (qch->version == QUIC_V2) 

tls.c

@@ -134,13 +134,12 @@ struct tls_verdict analyze_tls_data(
 	uint32_t dlen) 
 {
 	struct tls_verdict vrd = {0};
-	int ret;
 
 	size_t i = 0;
 	const uint8_t *data_end = data + dlen;
 
 	if (section->sni_detection == SNI_DETECTION_BRUTE) {
-		ret = bruteforce_analyze_sni_str(section, data, dlen, &vrd);
+		bruteforce_analyze_sni_str(section, data, dlen, &vrd);
 		goto out;
 	}
 
@@ -237,7 +236,7 @@ struct tls_verdict analyze_tls_data(
 			vrd.sni_len = sni_len;
 			vrd.sni_target_len = vrd.sni_len;
 
-			ret = analyze_sni_str(section, sni_name, sni_len, data, &vrd);
+			analyze_sni_str(section, sni_name, sni_len, data, &vrd);
 			goto out;
 
 nextExtension:
@@ -256,7 +255,6 @@ int gen_fake_sni(struct fake_type type,
 		const struct tcphdr *tcph, uint32_t tcph_len,
 		uint8_t *buf, uint32_t *buflen) {
 	uint32_t data_len = type.fake_len;
-	int ret;
 
 	if (type.type == FAKE_PAYLOAD_RANDOM && data_len == 0) {
 		data_len = (uint32_t)randint() % 1200;
@@ -303,7 +301,8 @@ int gen_fake_sni(struct fake_type type,
 			get_random_bytes(bfdptr, data_len);
 #else /* KERNEL_SPACE */
 #if _NO_GETRANDOM
-			ret = open("/dev/urandom", O_RDONLY);
+		{
+			int ret = open("/dev/urandom", O_RDONLY);
 			if (ret < 0) {
 				lgerror(ret, "Unable to open /dev/urandom");
 				return ret;
@@ -311,7 +310,7 @@ int gen_fake_sni(struct fake_type type,
 			
 			read(ret, bfdptr, data_len);
 			close(ret);
-			
+		}
 #else /* _NO_GETRANDOM */
 			getrandom(bfdptr, data_len, 0);
 #endif /* _NO_GETRANDOM */