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everything works except anti-replay window
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wangyu
wangyu
parent
725522fa75
commit
243f6bf87e
@ -13,11 +13,17 @@ static uint8_t g_key[]={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16, 0,0,0,0};
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static uint8_t buf[65535+100];
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static const int disable_all=0;
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static const int disable_aes=0;
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int my_encrypt(uint8_t *data,uint8_t *output,int &len,uint8_t * key)
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{
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memcpy(output,data,len);
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return 0;
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if(disable_all)
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{
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memcpy(output,data,len);
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return 0;
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}
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int ori_len=len;
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@ -40,28 +46,47 @@ int my_encrypt(uint8_t *data,uint8_t *output,int &len,uint8_t * key)
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//memcpy(buf,data,len); //not thread safe
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AES_CBC_encrypt_buffer((unsigned char *)output,(unsigned char *)data,len,(unsigned char *)key,(unsigned char *)zero_iv);
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//it doesnt allow over lap
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if(disable_aes)
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{
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memcpy(output,data,len);
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}
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else
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{
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AES_CBC_encrypt_buffer((unsigned char *)output,(unsigned char *)data,len,(unsigned char *)key,(unsigned char *)zero_iv);
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//it doesnt allow over lap
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}
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return 0;
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}
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int my_decrypt(uint8_t *data,uint8_t *output,int &len,uint8_t * key)
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{
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memcpy(output,data,len);
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return 0;
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if(disable_all)
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{
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memcpy(output,data,len);
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return 0;
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}
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uint8_t md5_res[16];
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if(len>65535) return -1;
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if(len<32) return -1;
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if(len%16 !=0) return -1;
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//memcpy(buf,data,len);
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AES_CBC_decrypt_buffer((unsigned char *)output,(unsigned char *)data,len,(unsigned char *)key,(unsigned char *)zero_iv);
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if(disable_aes)
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{
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memcpy(output,data,len);
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}
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else
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{
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AES_CBC_decrypt_buffer((unsigned char *)output,(unsigned char *)data,len,(unsigned char *)key,(unsigned char *)zero_iv);
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}
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//printf("%d %d\n",data[len-16-2],data[len-16-1]);
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//printf("<<%d>>",len);
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md5(output,len-16,md5_res);
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if(memcmp(output+len-16,md5_res,16)!=0)
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63
main.cpp
63
main.cpp
@ -55,7 +55,9 @@ const int handshake_timeout=1000;
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const int heartbeat_timeout=10000;
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const int udp_timeout=2000;
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const int timer_interval=400;
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const int heartbeat_interval=1000;
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const int timer_interval=50;
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//const uint16_t tcp_window=50000;
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@ -74,7 +76,7 @@ const int seq_mode=2; //0 dont increase /1 increase //increase randomly,abo
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const uint64_t epoll_timer_fd_sn=1;
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const uint64_t epoll_raw_recv_fd_sn=2;
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uint64_t epoll_udp_fd_sn=256;
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uint64_t epoll_udp_fd_sn=256; //udp_fd_sn =256,512,768......the lower 8 bit is not used,to avoid confliction
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const int server_nothing=0;
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@ -85,6 +87,7 @@ int server_current_state=server_nothing;
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long long last_hb_recv_time;
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long long last_udp_recv_time=0;
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int socket_buf_size=1024*1024*4;
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int udp_fd=-1;
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int raw_recv_fd;
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@ -126,7 +129,9 @@ const int client_ready=3;
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int client_current_state=client_nothing;
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int retry_counter;
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long long last_state_time;
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long long last_state_time=0;
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long long last_hb_sent_time=0;
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uint16_t ip_id=1;
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//const int MTU=1440;
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@ -226,17 +231,45 @@ void setnonblocking(int sock) {
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}
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}
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int set_udp_buf_size(int fd)
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{
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if(setsockopt(fd, SOL_SOCKET, SO_SNDBUFFORCE, &socket_buf_size, sizeof(socket_buf_size))<0)
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{
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printf("SO_SNDBUFFORCE fail\n");
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exit(1);
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}
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if(setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &socket_buf_size, sizeof(socket_buf_size))<0)
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{
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printf("SO_RCVBUFFORCE fail\n");
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exit(1);
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}
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return 0;
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}
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int init_raw_socket()
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{
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raw_send_fd = socket(AF_INET , SOCK_RAW , IPPROTO_TCP);
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if(raw_send_fd == -1) {
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perror("Failed to create raw_send_fd");
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exit(1);
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}
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if(setsockopt(raw_send_fd, SOL_SOCKET, SO_SNDBUFFORCE, &socket_buf_size, sizeof(socket_buf_size))<0)
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{
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printf("SO_SNDBUFFORCE fail\n");
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exit(1);
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}
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//raw_fd = socket(AF_PACKET, SOCK_DGRAM, htons(ETH_P_ALL));
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raw_recv_fd= socket(PF_PACKET, SOCK_RAW, htons(ETH_P_IP));
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if(setsockopt(raw_recv_fd, SOL_SOCKET, SO_RCVBUFFORCE, &socket_buf_size, sizeof(socket_buf_size))<0)
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{
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printf("SO_RCVBUFFORCE fail\n");
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exit(1);
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}
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//raw_fd=socket(AF_PACKET , SOCK_RAW , htons(ETH_P_IP));
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// packet_recv_sd = socket(AF_INET , SOCK_RAW , IPPROTO_TCP);
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if(raw_recv_fd == -1) {
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@ -704,7 +737,7 @@ int client_bind_to_a_new_port()
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}
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int fake_tcp_keep_connection_client() //for client
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{
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//printf("timer!");
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if(debug_mode)printf("timer!\n");
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//fflush(stdout);
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begin:
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if(client_current_state==client_nothing)
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@ -774,6 +807,12 @@ int fake_tcp_keep_connection_client() //for client
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printf("state back to nothing\n");
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return 0;
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}
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if(get_current_time()-last_hb_sent_time<heartbeat_interval)
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{
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return 0;
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}
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g_packet_info.syn=0;
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g_packet_info.ack=1;
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@ -790,6 +829,7 @@ int fake_tcp_keep_connection_client() //for client
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send_raw(g_packet_info,buf,sizeof(session_id)*2+1);*/
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send_hb(g_packet_info,session_id,oppsite_session_id);
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last_hb_sent_time=get_current_time();
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//last_time=get_current_time();
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}
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@ -838,6 +878,13 @@ int fake_tcp_keep_connection_server()
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printf("changed state to server_nothing111\n");
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return 0;
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}
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if(get_current_time()-last_hb_sent_time<heartbeat_interval)
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{
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return 0;
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}
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g_packet_info.syn=0;
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g_packet_info.ack=1;
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//g_packet_info.psh=1;
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@ -856,6 +903,8 @@ int fake_tcp_keep_connection_server()
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*/
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send_hb(g_packet_info,session_id,0);
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last_hb_sent_time=get_current_time();
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//last_time=get_current_time();
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if(debug_mode) printf("heart beat sent<%x>\n",session_id);
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fflush(stdout);
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@ -1164,6 +1213,7 @@ int server_raw_recv(iphdr * iph,tcphdr *tcph,char * data,int data_len)
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remote_addr_in.sin_port = htons(remote_port);
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remote_addr_in.sin_addr.s_addr = inet_addr(remote_address);
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udp_fd=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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set_udp_buf_size(udp_fd);
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printf("created new udp_fd");
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int ret = connect(udp_fd, (struct sockaddr *) &remote_addr_in, slen);
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@ -1382,6 +1432,8 @@ int client()
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//g_packet_info.src_port=source_port;
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udp_fd=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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set_udp_buf_size(udp_fd);
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int yes = 1;
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//setsockopt(udp_fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes));
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@ -1605,6 +1657,7 @@ int server()
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}
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int main(int argc, char *argv[])
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{
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g_packet_info.ack_seq=get_true_random_number();
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g_packet_info.seq=get_true_random_number();
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int i, j, k;
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2
makefile
2
makefile
@ -2,6 +2,6 @@ ccmips=mips-openwrt-linux-g++
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all:
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killall raw||true
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sleep 1
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g++ main.cpp -o raw -static -lrt -ggdb -I. aes.c md5.c encryption.cpp
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g++ main.cpp -o raw -static -lrt -ggdb -I. aes.c md5.c encryption.cpp -O3
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# ${ccmips} main.cpp -o rawmips -static -lgcc_eh -lrt
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