CMakeLists.txt

@@ -1,7 +1,4 @@
 #note: experimental
-#      currently only used for generating `compile_commands.json` for clangd.
-#      to build this project, it's suggested to use `makefile` instead
-
 cmake_minimum_required(VERSION 3.7)
 project(udp2raw)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

Dockerfile

@@ -0,0 +1,13 @@
+FROM alpine:3.6 as builder
+
+WORKDIR /
+
+RUN apk add --no-cache git  build-base linux-headers && \
+ git clone https://github.com/wangyu-/udp2raw-tunnel.git  && \
+ cd udp2raw-tunnel && \
+ make dynamic
+
+FROM alpine:3.6
+RUN apk add --no-cache libstdc++ iptables
+COPY --from=builder /udp2raw-tunnel/udp2raw_dynamic /bin/
+ENTRYPOINT [ "/bin/udp2raw_dynamic" ]

ISSUE_TEMPLATE.md

@@ -1 +1 @@
-English Only.
+English Only (except for bug reporting).

README.md

@@ -81,7 +81,7 @@ Assume your UDP is blocked or being QOS-ed or just poorly supported. Assume your
 Now,an encrypted raw tunnel has been established between client and server through TCP port 4096. Connecting to UDP port 3333 at the client side is equivalent to connecting to port 7777 at the server side. No UDP traffic will be exposed.
 
 ### Note
-To run on Android, check [Android_Guide](https://github.com/wangyu-/udp2raw/wiki/Android-Guide)
+To run on Android, check [Android_Guide](/doc/android_guide.md)
 
 `-a` option automatically adds an iptables rule (or a few iptables rules) for you, udp2raw relies on this iptables rule to work stably. Be aware you dont forget `-a` (its a common mistake). If you dont want udp2raw to add iptables rule automatically, you can add it manually(take a look at `-g` option) and omit `-a`.
 

common.cpp

@@ -1127,8 +1127,8 @@ void print_binary_chars(const char *a, int len) {
 u32_t djb2(unsigned char *str, int len) {
     u32_t hash = 5381;
     int c;
-    for (int i=0; i<len ;i++) {
+    int i = 0;
-        c = *(str++);
+    while (c = *str++, i++ != len) {
         hash = ((hash << 5) + hash) ^ c; /* (hash * 33) ^ c */
     }
 
@@ -1139,8 +1139,8 @@ u32_t djb2(unsigned char *str, int len) {
 u32_t sdbm(unsigned char *str, int len) {
     u32_t hash = 0;
     int c;
-    for (int i=0; i<len ;i++) {
+    int i = 0;
-        c = *(str++);
+    while (c = *str++, i++ != len) {
         hash = c + (hash << 6) + (hash << 16) - hash;
     }
     // hash=htonl(hash);

connection.cpp

@@ -435,7 +435,7 @@ int send_safer(conn_info_t &conn_info, char type, const char *data, int len)  //
         if (cipher_mode == cipher_xor) {
             send_data_buf2[0] ^= gro_xor[0];
             send_data_buf2[1] ^= gro_xor[1];
-        } else if (cipher_mode == cipher_aes128cbc || cipher_mode == cipher_aes128cfb) {
+        } else if (cipher_mode == cipher_aes128cbc || cipher_mode == cipher_aes128cbc) {
             aes_ecb_encrypt1(send_data_buf2);
         }
     }
@@ -586,7 +586,7 @@ int recv_safer_multi(conn_info_t &conn_info, vector<char> &type_arr, vector<stri
             if (cipher_mode == cipher_xor) {
                 recv_data[0] ^= gro_xor[0];
                 recv_data[1] ^= gro_xor[1];
-            } else if (cipher_mode == cipher_aes128cbc || cipher_mode == cipher_aes128cfb) {
+            } else if (cipher_mode == cipher_aes128cbc || cipher_mode == cipher_aes128cbc) {
                 aes_ecb_decrypt1(recv_data);
             }
             single_len = read_u16(recv_data);

main.cpp

@@ -40,19 +40,19 @@ int main(int argc, char *argv[]) {
 
     pre_process_arg(argc, argv);
 
-    ev_signal signal_watcher_sigpipe;
-    ev_signal signal_watcher_sigterm;
-    ev_signal signal_watcher_sigint;
-
     if (program_mode == client_mode) {
         struct ev_loop *loop = ev_default_loop(0);
 #if !defined(__MINGW32__)
+        ev_signal signal_watcher_sigpipe;
         ev_signal_init(&signal_watcher_sigpipe, sigpipe_cb, SIGPIPE);
         ev_signal_start(loop, &signal_watcher_sigpipe);
 #endif
+
+        ev_signal signal_watcher_sigterm;
         ev_signal_init(&signal_watcher_sigterm, sigterm_cb, SIGTERM);
         ev_signal_start(loop, &signal_watcher_sigterm);
 
+        ev_signal signal_watcher_sigint;
         ev_signal_init(&signal_watcher_sigint, sigint_cb, SIGINT);
         ev_signal_start(loop, &signal_watcher_sigint);
     } else {

makefile

@@ -103,7 +103,7 @@ linux:git_version
 	${cc_local}   -o ${NAME}_$@          -I. ${SOURCES} ${PCAP} ${FLAGS} -lrt -ggdb -static -O2 ${MP}
 
 freebsd:git_version
-	${cc_local}   -o ${NAME}_$@        -I. ${SOURCES} ${PCAP} ${FLAGS} -lrt -ggdb -static -libverbs -O2 ${MP}
+	${cc_local}   -o ${NAME}_$@        -I. ${SOURCES} ${PCAP} ${FLAGS} -lrt -ggdb -static -O2 ${MP}
 
 mac:git_version
 	${cc_local}   -o ${NAME}_$@        -I. ${SOURCES} ${PCAP} ${FLAGS} -ggdb -O2 ${MP}

network.cpp

@@ -702,7 +702,7 @@ void init_filter(int port) {
         }
     }
 
-    int dummy=0;
+    int dummy;
 
     int ret = setsockopt(raw_recv_fd, SOL_SOCKET, SO_DETACH_FILTER, &dummy, sizeof(dummy));  // in case i forgot to remove
     if (ret != 0) {
@@ -841,7 +841,7 @@ void init_filter(int port) {
 void remove_filter() {
     filter_port = 0;
 #ifdef UDP2RAW_LINUX
-    int dummy=0;
+    int dummy;
     int ret = setsockopt(raw_recv_fd, SOL_SOCKET, SO_DETACH_FILTER, &dummy, sizeof(dummy));
     if (ret != 0) {
         mylog(log_debug, "error remove fiter\n");

network.h

@@ -226,12 +226,12 @@ struct packet_info_t  // todo change this to union
 
     bool has_ts;
 
-    i32_t data_len;
-
 #ifdef UDP2RAW_LINUX
     sockaddr_ll addr_ll;
 #endif
 
+    i32_t data_len;
+
     packet_info_t();
 };