Implement optional support for SOCKS5-UDP

CMakeLists.txt

@@ -332,6 +332,7 @@ endif ()
 if (BUILD_TUN2SOCKS)
     add_subdirectory(socksclient)
     add_subdirectory(udpgw_client)
+    add_subdirectory(socks_udp_client)
     add_subdirectory(lwip)
 endif ()
 

blog_channels.txt

@@ -89,6 +89,7 @@ NCDRfkillMonitor 4
 udpgw 4
 UdpGwClient 4
 SocksUdpGwClient 4
+SocksUdpClient 4
 BNetwork 4
 BConnection 4
 BSSLConnection 4

generated/blog_channel_SocksUdpClient.h

@@ -0,0 +1,4 @@
+#ifdef BLOG_CURRENT_CHANNEL
+#undef BLOG_CURRENT_CHANNEL
+#endif
+#define BLOG_CURRENT_CHANNEL BLOG_CHANNEL_SocksUdpClient

generated/blog_channels_defines.h

@@ -89,60 +89,61 @@
 #define BLOG_CHANNEL_udpgw 88
 #define BLOG_CHANNEL_UdpGwClient 89
 #define BLOG_CHANNEL_SocksUdpGwClient 90
-#define BLOG_CHANNEL_BNetwork 91
-#define BLOG_CHANNEL_BConnection 92
-#define BLOG_CHANNEL_BSSLConnection 93
-#define BLOG_CHANNEL_BDatagram 94
-#define BLOG_CHANNEL_PeerChat 95
-#define BLOG_CHANNEL_BArpProbe 96
-#define BLOG_CHANNEL_NCDModuleIndex 97
-#define BLOG_CHANNEL_NCDModuleProcess 98
-#define BLOG_CHANNEL_NCDValGenerator 99
-#define BLOG_CHANNEL_ncd_from_string 100
-#define BLOG_CHANNEL_ncd_to_string 101
-#define BLOG_CHANNEL_ncd_value 102
-#define BLOG_CHANNEL_ncd_try 103
-#define BLOG_CHANNEL_ncd_sys_request_server 104
-#define BLOG_CHANNEL_NCDRequest 105
-#define BLOG_CHANNEL_ncd_net_ipv6_wait_dynamic_addr 106
-#define BLOG_CHANNEL_NCDRequestClient 107
-#define BLOG_CHANNEL_ncd_request 108
-#define BLOG_CHANNEL_ncd_sys_request_client 109
-#define BLOG_CHANNEL_ncd_exit 110
-#define BLOG_CHANNEL_ncd_getargs 111
-#define BLOG_CHANNEL_ncd_arithmetic 112
-#define BLOG_CHANNEL_ncd_parse 113
-#define BLOG_CHANNEL_ncd_valuemetic 114
-#define BLOG_CHANNEL_ncd_file 115
-#define BLOG_CHANNEL_ncd_netmask 116
-#define BLOG_CHANNEL_ncd_implode 117
-#define BLOG_CHANNEL_ncd_call2 118
-#define BLOG_CHANNEL_ncd_assert 119
-#define BLOG_CHANNEL_ncd_reboot 120
-#define BLOG_CHANNEL_ncd_explode 121
-#define BLOG_CHANNEL_NCDPlaceholderDb 122
-#define BLOG_CHANNEL_NCDVal 123
-#define BLOG_CHANNEL_ncd_net_ipv6_addr 124
-#define BLOG_CHANNEL_ncd_net_ipv6_route 125
-#define BLOG_CHANNEL_ncd_net_ipv4_addr_in_network 126
-#define BLOG_CHANNEL_ncd_net_ipv6_addr_in_network 127
-#define BLOG_CHANNEL_dostest_server 128
-#define BLOG_CHANNEL_dostest_attacker 129
-#define BLOG_CHANNEL_ncd_timer 130
-#define BLOG_CHANNEL_ncd_file_open 131
-#define BLOG_CHANNEL_ncd_backtrack 132
-#define BLOG_CHANNEL_ncd_socket 133
-#define BLOG_CHANNEL_ncd_depend_scope 134
-#define BLOG_CHANNEL_ncd_substr 135
-#define BLOG_CHANNEL_ncd_sys_start_process 136
-#define BLOG_CHANNEL_NCDBuildProgram 137
-#define BLOG_CHANNEL_ncd_log 138
-#define BLOG_CHANNEL_ncd_log_msg 139
-#define BLOG_CHANNEL_ncd_buffer 140
-#define BLOG_CHANNEL_ncd_getenv 141
-#define BLOG_CHANNEL_BThreadSignal 142
-#define BLOG_CHANNEL_BLockReactor 143
-#define BLOG_CHANNEL_ncd_load_module 144
-#define BLOG_CHANNEL_ncd_basic_functions 145
-#define BLOG_CHANNEL_ncd_objref 146
-#define BLOG_NUM_CHANNELS 147
+#define BLOG_CHANNEL_SocksUdpClient 91
+#define BLOG_CHANNEL_BNetwork 92
+#define BLOG_CHANNEL_BConnection 93
+#define BLOG_CHANNEL_BSSLConnection 94
+#define BLOG_CHANNEL_BDatagram 95
+#define BLOG_CHANNEL_PeerChat 96
+#define BLOG_CHANNEL_BArpProbe 97
+#define BLOG_CHANNEL_NCDModuleIndex 98
+#define BLOG_CHANNEL_NCDModuleProcess 99
+#define BLOG_CHANNEL_NCDValGenerator 100
+#define BLOG_CHANNEL_ncd_from_string 101
+#define BLOG_CHANNEL_ncd_to_string 102
+#define BLOG_CHANNEL_ncd_value 103
+#define BLOG_CHANNEL_ncd_try 104
+#define BLOG_CHANNEL_ncd_sys_request_server 105
+#define BLOG_CHANNEL_NCDRequest 106
+#define BLOG_CHANNEL_ncd_net_ipv6_wait_dynamic_addr 107
+#define BLOG_CHANNEL_NCDRequestClient 108
+#define BLOG_CHANNEL_ncd_request 109
+#define BLOG_CHANNEL_ncd_sys_request_client 110
+#define BLOG_CHANNEL_ncd_exit 111
+#define BLOG_CHANNEL_ncd_getargs 112
+#define BLOG_CHANNEL_ncd_arithmetic 113
+#define BLOG_CHANNEL_ncd_parse 114
+#define BLOG_CHANNEL_ncd_valuemetic 115
+#define BLOG_CHANNEL_ncd_file 116
+#define BLOG_CHANNEL_ncd_netmask 117
+#define BLOG_CHANNEL_ncd_implode 118
+#define BLOG_CHANNEL_ncd_call2 119
+#define BLOG_CHANNEL_ncd_assert 120
+#define BLOG_CHANNEL_ncd_reboot 121
+#define BLOG_CHANNEL_ncd_explode 122
+#define BLOG_CHANNEL_NCDPlaceholderDb 123
+#define BLOG_CHANNEL_NCDVal 124
+#define BLOG_CHANNEL_ncd_net_ipv6_addr 125
+#define BLOG_CHANNEL_ncd_net_ipv6_route 126
+#define BLOG_CHANNEL_ncd_net_ipv4_addr_in_network 127
+#define BLOG_CHANNEL_ncd_net_ipv6_addr_in_network 128
+#define BLOG_CHANNEL_dostest_server 129
+#define BLOG_CHANNEL_dostest_attacker 130
+#define BLOG_CHANNEL_ncd_timer 131
+#define BLOG_CHANNEL_ncd_file_open 132
+#define BLOG_CHANNEL_ncd_backtrack 133
+#define BLOG_CHANNEL_ncd_socket 134
+#define BLOG_CHANNEL_ncd_depend_scope 135
+#define BLOG_CHANNEL_ncd_substr 136
+#define BLOG_CHANNEL_ncd_sys_start_process 137
+#define BLOG_CHANNEL_NCDBuildProgram 138
+#define BLOG_CHANNEL_ncd_log 139
+#define BLOG_CHANNEL_ncd_log_msg 140
+#define BLOG_CHANNEL_ncd_buffer 141
+#define BLOG_CHANNEL_ncd_getenv 142
+#define BLOG_CHANNEL_BThreadSignal 143
+#define BLOG_CHANNEL_BLockReactor 144
+#define BLOG_CHANNEL_ncd_load_module 145
+#define BLOG_CHANNEL_ncd_basic_functions 146
+#define BLOG_CHANNEL_ncd_objref 147
+#define BLOG_NUM_CHANNELS 148

generated/blog_channels_list.h

@@ -89,6 +89,7 @@
 {"udpgw", 4},
 {"UdpGwClient", 4},
 {"SocksUdpGwClient", 4},
+{"SocksUdpClient", 4},
 {"BNetwork", 4},
 {"BConnection", 4},
 {"BSSLConnection", 4},

misc/socks_proto.h

@@ -112,7 +112,15 @@ B_START_PACKED
 struct socks_addr_ipv6 {
     uint8_t addr[16];
     uint16_t port;
-} B_PACKED;    
+} B_PACKED;
+B_END_PACKED
+
+B_START_PACKED
+struct socks_udp_header {
+    uint16_t rsv;
+    uint8_t frag;
+    uint8_t atyp;
+} B_PACKED;
 B_END_PACKED
 
 #endif

socks_udp_client/CMakeLists.txt

@@ -0,0 +1 @@
+badvpn_add_library(socks_udp_client "system;flow;flowextra" "" SocksUdpClient.c)