diff options
| -rw-r--r-- | src/uanytun.c | 4 | ||||
| -rw-r--r-- | src/udp.c | 4 | ||||
| -rw-r--r-- | src/udp.h | 1 |
3 files changed, 8 insertions, 1 deletions
diff --git a/src/uanytun.c b/src/uanytun.c index c80ca8b..42b082a 100644 --- a/src/uanytun.c +++ b/src/uanytun.c @@ -155,6 +155,9 @@ int process_tun_data(tun_device_t* dev, udp_socket_t* sock, options_t* opt, plai plain_packet_set_type(plain_packet, PAYLOAD_TYPE_TAP); else plain_packet_set_type(plain_packet, PAYLOAD_TYPE_UNKNOWN); + + if(!sock->remote_end_set_) + return 0; cipher_encrypt(c, kd, kd_outbound, plain_packet, encrypted_packet, seq_nr, opt->sender_id_, opt->mux_); @@ -212,6 +215,7 @@ int process_sock_data(tun_device_t* dev, udp_socket_t* sock, options_t* opt, pla if(memcmp(&remote, &(sock->remote_end_), sizeof(remote))) { memcpy(&(sock->remote_end_), &remote, sizeof(remote)); + sock->remote_end_set_ = 1; char* addrstring = udp_endpoint_to_string(remote); log_printf(NOTICE, "autodetected remote host changed %s", addrstring); free(addrstring); @@ -51,6 +51,7 @@ int udp_init(udp_socket_t* sock, const char* local_addr, const char* port) sock->fd_ = 0; memset(&(sock->local_end_), 0, sizeof(sock->local_end_)); memset(&(sock->remote_end_), 0, sizeof(sock->local_end_)); + sock->remote_end_set_ = 0; struct addrinfo hints, *res; @@ -116,6 +117,7 @@ void udp_set_remote(udp_socket_t* sock, const char* remote_addr, const char* por return; } memcpy(&(sock->remote_end_), res->ai_addr, sizeof(*(res->ai_addr))); + sock->remote_end_set_ = 1; freeaddrinfo(res); } @@ -172,7 +174,7 @@ char* udp_get_local_end_string(udp_socket_t* sock) char* udp_get_remote_end_string(udp_socket_t* sock) { - if(!sock) + if(!sock || !sock->remote_end_set_) return ""; return udp_endpoint_to_string(sock->remote_end_); @@ -49,6 +49,7 @@ struct udp_socket_struct { int fd_; udp_endpoint_t local_end_; udp_endpoint_t remote_end_; + int remote_end_set_; }; typedef struct udp_socket_struct udp_socket_t; |