@ -210,7 +210,7 @@ int supernode_connect(n2n_edge_t *eee) {
if ( eee - > sock < 0 ) {
if ( eee - > conf . local_port > 0 )
traceEvent ( TRACE_NORMAL , " B inding to local port %d" ,
traceEvent ( TRACE_NORMAL , " b inding to local port %d" ,
( eee - > conf . connect_tcp ) ? 0 : eee - > conf . local_port ) ;
eee - > sock = open_socket ( ( eee - > conf . connect_tcp ) ? 0 : eee - > conf . local_port ,
@ -218,7 +218,7 @@ int supernode_connect(n2n_edge_t *eee) {
eee - > conf . connect_tcp ) ;
if ( eee - > sock < 0 ) {
traceEvent ( TRACE_ERROR , " F ailed to bind main UDP port %u" ,
traceEvent ( TRACE_ERROR , " f ailed to bind main UDP port %u" ,
( eee - > conf . connect_tcp ) ? 0 : eee - > conf . local_port ) ;
return - 1 ;
}
@ -252,18 +252,18 @@ int supernode_connect(n2n_edge_t *eee) {
sockopt = eee - > conf . tos ;
if ( setsockopt ( eee - > sock , IPPROTO_IP , IP_TOS , ( char * ) & sockopt , sizeof ( sockopt ) ) = = 0 )
traceEvent ( TRACE_NORMAL , " TOS set to 0x%x " , eee - > conf . tos ) ;
traceEvent ( TRACE_I NF O , " TOS set to 0x%x " , eee - > conf . tos ) ;
else
traceEvent ( TRACE_ERROR , " C ould not set TOS 0x%x[%d]: %s" , eee - > conf . tos , errno , strerror ( errno ) ) ;
traceEvent ( TRACE_WARNING , " c ould not set TOS 0x%x[%d]: %s" , eee - > conf . tos , errno , strerror ( errno ) ) ;
}
# ifdef IP_PMTUDISC_DO
sockopt = ( eee - > conf . disable_pmtu_discovery ) ? IP_PMTUDISC_DONT : IP_PMTUDISC_DO ;
if ( setsockopt ( eee - > sock , IPPROTO_IP , IP_MTU_DISCOVER , & sockopt , sizeof ( sockopt ) ) < 0 )
traceEvent ( TRACE_WARNING , " C ould not %s PMTU discovery[%d]: %s" ,
traceEvent ( TRACE_WARNING , " c ould not %s PMTU discovery[%d]: %s" ,
( eee - > conf . disable_pmtu_discovery ) ? " disable " : " enable " , errno , strerror ( errno ) ) ;
else
traceEvent ( TRACE_DEBUG , " PMTU discovery %s " , ( eee - > conf . disable_pmtu_discovery ) ? " disabled " : " enabled " ) ;
traceEvent ( TRACE_INFO , " PMTU discovery %s " , ( eee - > conf . disable_pmtu_discovery ) ? " disabled " : " enabled " ) ;
# endif
}
@ -297,12 +297,12 @@ n2n_edge_t* edge_init (const n2n_edge_conf_t *conf, int *rv) {
uint8_t tmp_key [ N2N_AUTH_CHALLENGE_SIZE ] ;
if ( ( rc = edge_verify_conf ( conf ) ) ! = 0 ) {
traceEvent ( TRACE_ERROR , " I nvalid configuration" ) ;
traceEvent ( TRACE_ERROR , " i nvalid configuration" ) ;
goto edge_init_error ;
}
if ( ! eee ) {
traceEvent ( TRACE_ERROR , " C annot allocate memory" ) ;
traceEvent ( TRACE_ERROR , " c annot allocate memory" ) ;
goto edge_init_error ;
}
@ -328,7 +328,7 @@ n2n_edge_t* edge_init (const n2n_edge_conf_t *conf, int *rv) {
// zstd does not require initialization. if it were required, this would be a good place
# endif
traceEvent ( TRACE_NORMAL , " N umber of supernodes in the list: %d\n " , HASH_COUNT ( eee - > conf . supernodes ) ) ;
traceEvent ( TRACE_NORMAL , " n umber of supernodes in the list: %d\n " , HASH_COUNT ( eee - > conf . supernodes ) ) ;
HASH_ITER ( hh , eee - > conf . supernodes , scan , tmp ) {
traceEvent ( TRACE_NORMAL , " supernode %u => %s \n " , i , ( scan - > ip_addr ) ) ;
i + + ;
@ -357,7 +357,7 @@ n2n_edge_t* edge_init (const n2n_edge_conf_t *conf, int *rv) {
}
if ( ( rc < 0 ) | | ( eee - > transop . fwd = = NULL ) | | ( eee - > transop . transform_id ! = transop_id ) ) {
traceEvent ( TRACE_ERROR , " T ransop init failed" ) ;
traceEvent ( TRACE_ERROR , " t ransop init failed" ) ;
goto edge_init_error ;
}
@ -403,7 +403,7 @@ n2n_edge_t* edge_init (const n2n_edge_conf_t *conf, int *rv) {
}
if ( eee - > transop . no_encryption )
traceEvent ( TRACE_WARNING , " E ncryption is disabled in edge" ) ;
traceEvent ( TRACE_WARNING , " e ncryption is disabled in edge" ) ;
// first time calling edge_init_sockets needs -1 in the sockets for it does throw an error
// on trying to close them (open_sockets does so for also being able to RE-open the sockets
@ -523,12 +523,12 @@ static void register_with_local_peers (n2n_edge_t * eee) {
# ifndef SKIP_MULTICAST_PEERS_DISCOVERY
if ( eee - > multicast_joined & & eee - > conf . allow_p2p ) {
/* send registration to the local multicast group */
traceEvent ( TRACE_DEBUG , " R egistering with multicast group %s:%u" ,
traceEvent ( TRACE_DEBUG , " r egistering with multicast group %s:%u" ,
N2N_MULTICAST_GROUP , N2N_MULTICAST_PORT ) ;
send_register ( eee , & ( eee - > multicast_peer ) , NULL ) ;
}
# else
traceEvent ( TRACE_DEBUG , " M ulticast peers discovery is disabled, skipping" ) ;
traceEvent ( TRACE_DEBUG , " m ulticast peers discovery is disabled, skipping" ) ;
# endif
}
@ -591,11 +591,11 @@ static void register_with_new_peer (n2n_edge_t *eee,
HASH_ADD_PEER ( eee - > pending_peers , scan ) ;
traceEvent ( TRACE_DEBUG , " === new pending %s -> %s " ,
traceEvent ( TRACE_DEBUG , " new pending peer %s [%s] " ,
macaddr_str ( mac_buf , scan - > mac_addr ) ,
sock_to_cstr ( sockbuf , & ( scan - > sock ) ) ) ;
traceEvent ( TRACE_DEBUG , " P ending peers list size=%u" ,
traceEvent ( TRACE_DEBUG , " p ending peers list size=%u" ,
HASH_COUNT ( eee - > pending_peers ) ) ;
/* trace Sending REGISTER */
if ( from_supernode ) {
@ -729,23 +729,23 @@ static void peer_set_p2p_confirmed (n2n_edge_t * eee,
HASH_ADD_PEER ( eee - > known_peers , scan ) ;
scan - > last_p2p = now ;
traceEvent ( TRACE_DEBUG , " P2P connection established: %s [%s]" ,
traceEvent ( TRACE_DEBUG , " p2p connection established: %s [%s]" ,
macaddr_str ( mac_buf , mac ) ,
sock_to_cstr ( sockbuf , peer ) ) ;
traceEvent ( TRACE_DEBUG , " === new peer %s -> %s " ,
traceEvent ( TRACE_DEBUG , " new peer %s [%s] " ,
macaddr_str ( mac_buf , scan - > mac_addr ) ,
sock_to_cstr ( sockbuf , & ( scan - > sock ) ) ) ;
traceEvent ( TRACE_DEBUG , " P ending peers list size=%u" ,
traceEvent ( TRACE_DEBUG , " p ending peers list size=%u" ,
HASH_COUNT ( eee - > pending_peers ) ) ;
traceEvent ( TRACE_DEBUG , " K nown peers list size=%u" ,
traceEvent ( TRACE_DEBUG , " k nown peers list size=%u" ,
HASH_COUNT ( eee - > known_peers ) ) ;
scan - > last_seen = now ;
} else
traceEvent ( TRACE_DEBUG , " Failed to find sender in pending_peers. " ) ;
traceEvent ( TRACE_DEBUG , " failed to find sender in pending_peers " ) ;
}
@ -890,7 +890,7 @@ static void check_known_peer_sock_change (n2n_edge_t *eee,
if ( ! sock_equal ( & ( scan - > sock ) , peer ) ) {
if ( ! from_supernode ) {
/* This is a P2P packet */
traceEvent ( TRACE_NORMAL , " Peer changed %s: %s -> %s " ,
traceEvent ( TRACE_NORMAL , " peer %s changed [%s] -> [%s] " ,
macaddr_str ( mac_buf , scan - > mac_addr ) ,
sock_to_cstr ( sockbuf1 , & ( scan - > sock ) ) ,
sock_to_cstr ( sockbuf2 , peer ) ) ;
@ -937,30 +937,30 @@ static ssize_t sendto_fd (n2n_edge_t *eee, const void *buf,
char * c = strerror ( errno ) ;
// downgrade to TRACE_DEBUG in case of custom AF_INVALID, i.e. supernode not resolved yet
if ( errno = = EAFNOSUPPORT /* 93 */ ) {
traceEvent ( TRACE_DEBUG , " sendto_fd sendto failed (%d) %s " , errno , c ) ;
traceEvent ( TRACE_DEBUG , " sendto failed (%d) %s " , errno , c ) ;
# ifdef WIN32
traceEvent ( TRACE_DEBUG , " sendto_fd WSAGetLastError(): %u" , WSAGetLastError ( ) ) ;
traceEvent ( TRACE_DEBUG , " WSAGetLastError(): %u " , WSAGetLastError ( ) ) ;
# endif
} else {
traceEvent ( TRACE_ERROR , " sendto_fd sendto failed (%d) %s" , errno , c ) ;
traceEvent ( TRACE_WARNING , " sendto failed (%d) %s " , errno , c ) ;
# ifdef WIN32
traceEvent ( TRACE_ERROR , " sendto_fd WSAGetLastError(): %u" , WSAGetLastError ( ) ) ;
traceEvent ( TRACE_WARNING , " WSAGetLastError(): %u " , WSAGetLastError ( ) ) ;
# endif
}
if ( eee - > conf . connect_tcp ) {
supernode_disconnect ( eee ) ;
eee - > sn_wait = 1 ;
traceEvent ( TRACE_DEBUG , " sendto_fd disconnected supernode due to sendto() error" ) ;
traceEvent ( TRACE_DEBUG , " disconnected supernode due to sendto() error " ) ;
return - 1 ;
}
} else {
traceEvent ( TRACE_DEBUG , " sendto_fd sen t=%d to " , ( signed int ) sent ) ;
traceEvent ( TRACE_DEBUG , " sent=%d to " , ( signed int ) sent ) ;
}
} else {
supernode_disconnect ( eee ) ;
eee - > sn_wait = 1 ;
traceEvent ( TRACE_DEBUG , " sendto_fd disconnected supernode due to select() timeout" ) ;
traceEvent ( TRACE_DEBUG , " disconnected supernode due to select() timeout " ) ;
return - 1 ;
}
return sent ;
@ -1039,14 +1039,14 @@ static void check_join_multicast_group (n2n_edge_t *eee) {
# endif
if ( setsockopt ( eee - > udp_multicast_sock , IPPROTO_IP , IP_ADD_MEMBERSHIP , ( char * ) & mreq , sizeof ( mreq ) ) < 0 ) {
traceEvent ( TRACE_WARNING , " F ailed to bind to local multicast group %s:%u [errno %u]" ,
traceEvent ( TRACE_WARNING , " f ailed to bind to local multicast group %s:%u [errno %u]" ,
N2N_MULTICAST_GROUP , N2N_MULTICAST_PORT , errno ) ;
# ifdef WIN32
traceEvent ( TRACE_ERROR , " WSAGetLastError(): %u " , WSAGetLastError ( ) ) ;
traceEvent ( TRACE_WARNING , " WSAGetLastError(): %u " , WSAGetLastError ( ) ) ;
# endif
} else {
traceEvent ( TRACE_NORMAL , " S uccessfully joined multicast group %s:%u" ,
traceEvent ( TRACE_NORMAL , " s uccessfully joined multicast group %s:%u" ,
N2N_MULTICAST_GROUP , N2N_MULTICAST_PORT ) ;
eee - > multicast_joined = 1 ;
}
@ -1171,7 +1171,7 @@ void send_register_super (n2n_edge_t *eee) {
idx = 0 ;
encode_REGISTER_SUPER ( pktbuf , & idx , & cmn , & reg ) ;
traceEvent ( TRACE_DEBUG , " send REGISTER_SUPER to %s " ,
traceEvent ( TRACE_DEBUG , " send REGISTER_SUPER to [ %s] " ,
sock_to_cstr ( sockbuf , & ( eee - > curr_sn - > sock ) ) ) ;
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED ) {
@ -1214,7 +1214,7 @@ static void send_unregister_super (n2n_edge_t *eee) {
idx = 0 ;
encode_UNREGISTER_SUPER ( pktbuf , & idx , & cmn , & unreg ) ;
traceEvent ( TRACE_DEBUG , " send UNREGISTER_SUPER to %s " ,
traceEvent ( TRACE_DEBUG , " send UNREGISTER_SUPER to [ %s] " ,
sock_to_cstr ( sockbuf , & ( eee - > curr_sn - > sock ) ) ) ;
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED )
@ -1246,7 +1246,7 @@ static int sort_supernodes (n2n_edge_t *eee, time_t now) {
reset_sup_attempts ( eee ) ;
supernode_connect ( eee ) ;
traceEvent ( TRACE_INFO , " R egistering with supernode [%s][number of supernodes %d][attempts left %u]" ,
traceEvent ( TRACE_INFO , " r egistering with supernode [%s][number of supernodes %d][attempts left %u]" ,
supernode_ip ( eee ) , HASH_COUNT ( eee - > conf . supernodes ) , ( unsigned int ) eee - > sup_attempts ) ;
send_register_super ( eee ) ;
@ -1287,7 +1287,7 @@ static void send_register (n2n_edge_t * eee,
n2n_sock_str_t sockbuf ;
if ( ! eee - > conf . allow_p2p ) {
traceEvent ( TRACE_DEBUG , " S kipping register as P2P is disabled" ) ;
traceEvent ( TRACE_DEBUG , " s kipping register as P2P is disabled" ) ;
return ;
}
@ -1315,7 +1315,7 @@ static void send_register (n2n_edge_t * eee,
idx = 0 ;
encode_REGISTER ( pktbuf , & idx , & cmn , & reg ) ;
traceEvent ( TRACE_INFO , " Send REGISTER to %s " ,
traceEvent ( TRACE_INFO , " send REGISTER to [%s] " ,
sock_to_cstr ( sockbuf , remote_peer ) ) ;
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED )
@ -1341,7 +1341,7 @@ static void send_register_ack (n2n_edge_t * eee,
n2n_sock_str_t sockbuf ;
if ( ! eee - > conf . allow_p2p ) {
traceEvent ( TRACE_DEBUG , " S kipping register ACK as P2P is disabled" ) ;
traceEvent ( TRACE_DEBUG , " s kipping register ACK as P2P is disabled" ) ;
return ;
}
@ -1360,7 +1360,7 @@ static void send_register_ack (n2n_edge_t * eee,
idx = 0 ;
encode_REGISTER_ACK ( pktbuf , & idx , & cmn , & ack ) ;
traceEvent ( TRACE_INFO , " send REGISTER_ACK %s " ,
traceEvent ( TRACE_INFO , " send REGISTER_ACK to [ %s] " ,
sock_to_cstr ( sockbuf , remote_peer ) ) ;
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED )
@ -1409,7 +1409,7 @@ static void send_grat_arps (n2n_edge_t * eee) {
uint8_t buffer [ 48 ] ;
size_t len ;
traceEvent ( TRACE_DEBUG , " S ending gratuitous ARP..." ) ;
traceEvent ( TRACE_DEBUG , " s ending gratuitous ARP..." ) ;
len = build_gratuitous_arp ( eee , ( char * ) buffer , sizeof ( buffer ) ) ;
edge_send_packet2net ( eee , buffer , len ) ;
@ -1450,7 +1450,7 @@ void update_supernode_reg (n2n_edge_t * eee, time_t now) {
sn_selection_criterion_bad ( & ( eee - > curr_sn - > selection_criterion ) ) ;
sn_selection_sort ( & ( eee - > conf . supernodes ) ) ;
eee - > curr_sn = eee - > conf . supernodes ;
traceEvent ( TRACE_WARNING , " Supernode not responding, now trying %s " , supernode_ip ( eee ) ) ;
traceEvent ( TRACE_WARNING , " supernode not responding, now trying [%s] " , supernode_ip ( eee ) ) ;
supernode_connect ( eee ) ;
reset_sup_attempts ( eee ) ;
// trigger out-of-schedule DNS resolution
@ -1475,12 +1475,12 @@ void update_supernode_reg (n2n_edge_t * eee, time_t now) {
if ( eee - > close_socket_counter > = N2N_CLOSE_SOCKET_COUNTER_MAX ) {
eee - > close_socket_counter = 0 ;
supernode_disconnect ( eee ) ;
traceEvent ( TRACE_DEBUG , " update_supernode_reg disconnected supernode" ) ;
traceEvent ( TRACE_DEBUG , " disconnected supernode " ) ;
}
}
supernode_connect ( eee ) ;
traceEvent ( TRACE_DEBUG , " update_supernode_reg reconnected to supernode" ) ;
traceEvent ( TRACE_DEBUG , " reconnected to supernode " ) ;
}
} else {
@ -1490,7 +1490,7 @@ void update_supernode_reg (n2n_edge_t * eee, time_t now) {
# ifndef HAVE_PTHREAD
if ( supernode2sock ( & ( eee - > curr_sn - > sock ) , eee - > curr_sn - > ip_addr ) = = 0 ) {
# endif
traceEvent ( TRACE_INFO , " R egistering with supernode [%s][number of supernodes %d][attempts left %u]" ,
traceEvent ( TRACE_INFO , " r egistering with supernode [%s][number of supernodes %d][attempts left %u]" ,
supernode_ip ( eee ) , HASH_COUNT ( eee - > conf . supernodes ) , ( unsigned int ) eee - > sup_attempts ) ;
send_register_super ( eee ) ;
@ -1593,7 +1593,7 @@ static int handle_PACKET (n2n_edge_t * eee,
deflation_buffer = malloc ( deflated_len ) ;
deflated_len = ZSTD_decompress ( deflation_buffer , deflated_len , eth_payload , eth_size ) ;
if ( ZSTD_isError ( deflated_len ) ) {
traceEvent ( TRACE_ERROR , " payload decompression failed with zstd error '%s'. " ,
traceEvent ( TRACE_WARNING , " payload decompression failed with zstd error '%s'. " ,
ZSTD_getErrorName ( deflated_len ) ) ;
free ( deflation_buffer ) ;
return ( - 1 ) ; // cannot help it
@ -1601,13 +1601,13 @@ static int handle_PACKET (n2n_edge_t * eee,
break ;
# endif
default :
traceEvent ( TRACE_ERROR , " payload decompression failed: received packet indicating unsupported %s compression. " ,
traceEvent ( TRACE_WARNING , " payload decompression failed: received packet indicating unsupported %s compression. " ,
compression_str ( rx_compression_id ) ) ;
return ( - 1 ) ; // cannot handle it
}
if ( rx_compression_id ! = N2N_COMPRESSION_ID_NONE ) {
traceEvent ( TRACE_DEBUG , " payload decompression [ %s] : deflated %u bytes to %u bytes " ,
traceEvent ( TRACE_DEBUG , " payload decompression %s: deflated %u bytes to %u bytes " ,
compression_str ( rx_compression_id ) , eth_size , ( int ) deflated_len ) ;
memcpy ( eth_payload , deflation_buffer , deflated_len ) ;
eth_size = deflated_len ;
@ -1617,7 +1617,7 @@ static int handle_PACKET (n2n_edge_t * eee,
is_multicast = ( is_ip6_discovery ( eth_payload , eth_size ) | | is_ethMulticast ( eth_payload , eth_size ) ) ;
if ( eee - > conf . drop_multicast & & is_multicast ) {
traceEvent ( TRACE_INFO , " D ropping RX multicast" ) ;
traceEvent ( TRACE_INFO , " d ropping RX multicast" ) ;
return ( - 1 ) ;
} else if ( ( ! eee - > conf . allow_routing ) & & ( ! is_multicast ) ) {
/* Check if it is a routed packet */
@ -1628,11 +1628,11 @@ static int handle_PACKET (n2n_edge_t * eee,
/* Note: all elements of the_ip are in network order */
if ( ! memcmp ( dst_mac , broadcast_mac , N2N_MAC_SIZE ) )
traceEvent ( TRACE_DEBUG , " Broadcast packet [%s]" ,
traceEvent ( TRACE_DEBUG , " RX broadcast packet destined to [%s]" ,
intoa ( ntohl ( * dst ) , ip_buf , sizeof ( ip_buf ) ) ) ;
else if ( ( * dst ! = eee - > device . ip_addr ) ) {
/* This is a packet that needs to be routed */
traceEvent ( TRACE_INFO , " Discarding routed packet [%s]" ,
traceEvent ( TRACE_INFO , " discarding routed packet destined to [%s]" ,
intoa ( ntohl ( * dst ) , ip_buf , sizeof ( ip_buf ) ) ) ;
return ( - 1 ) ;
} else {
@ -1644,32 +1644,32 @@ static int handle_PACKET (n2n_edge_t * eee,
if ( eee - > network_traffic_filter - > filter_packet_from_peer ( eee - > network_traffic_filter , eee , orig_sender ,
eth_payload , eth_size ) = = N2N_DROP ) {
traceEvent ( TRACE_DEBUG , " Filtered packet %u" , ( unsigned int ) eth_size ) ;
traceEvent ( TRACE_DEBUG , " filtered packet of size %u" , ( unsigned int ) eth_size ) ;
return ( 0 ) ;
}
if ( eee - > cb . packet_from_peer ) {
uint16_t tmp_eth_size = eth_size ;
if ( eee - > cb . packet_from_peer ( eee , orig_sender , eth_payload , & tmp_eth_size ) = = N2N_DROP ) {
traceEvent ( TRACE_DEBUG , " DROP packet %u " , ( unsigned int ) eth_size ) ;
traceEvent ( TRACE_DEBUG , " DROP packet of size %u " , ( unsigned int ) eth_size ) ;
return ( 0 ) ;
}
eth_size = tmp_eth_size ;
}
/* Write ethernet packet to tap device. */
traceEvent ( TRACE_DEBUG , " sending to TAP %u " , ( unsigned int ) eth_size ) ;
traceEvent ( TRACE_DEBUG , " sending data of size %u to TAP " , ( unsigned int ) eth_size ) ;
data_sent_len = tuntap_write ( & ( eee - > device ) , eth_payload , eth_size ) ;
if ( data_sent_len = = eth_size ) {
retval = 0 ;
}
} else {
traceEvent ( TRACE_ERROR , " invalid transop ID: expected %s(%u), got %s(%u) from %s [%s] " ,
traceEvent ( TRACE_WARNING , " invalid transop ID: expected %s (%u), got %s (%u) from %s [%s] " ,
transop_str ( eee - > conf . transop_id ) , eee - > conf . transop_id ,
transop_str ( rx_transop_id ) , rx_transop_id ,
sock_to_cstr ( sockbuf , orig_sender ) ,
macaddr_str ( mac_buf , pkt - > srcMac ) ) ;
macaddr_str ( mac_buf , pkt - > srcMac ) ,
sock_to_cstr ( sockbuf , orig_sender ) ) ;
}
}
@ -1697,7 +1697,7 @@ static char *get_ip_from_arp (dec_ip_str_t buf, const n2n_mac_t req_mac) {
}
if ( ! ( fd = fopen ( " /proc/net/arp " , " r " ) ) ) {
traceEvent ( TRACE_ERROR , " Could not open arp table. [%d]: %s" , errno , strerror ( errno ) ) ;
traceEvent ( TRACE_WARNING , " could not open arp table: %d - %s" , errno , strerror ( errno ) ) ;
return buf ;
}
@ -1747,7 +1747,7 @@ static void readFromMgmtSocket (n2n_edge_t *eee, int *keep_running) {
( struct sockaddr * ) & sender_sock , ( socklen_t * ) & i ) ;
if ( recvlen < 0 ) {
traceEvent ( TRACE_ERROR , " mgmt recvfrom failed with %s " , strerror ( errno ) ) ;
traceEvent ( TRACE_WARNING , " mgmt recvfrom failed: %d - %s " , errno , strerror ( errno ) ) ;
return ; /* failed to receive data from UDP */
}
@ -1769,7 +1769,7 @@ static void readFromMgmtSocket (n2n_edge_t *eee, int *keep_running) {
}
if ( 0 = = memcmp ( udp_buf , " stop " , 4 ) ) {
traceEvent ( TRACE_ERROR , " stop command received. " ) ;
traceEvent ( TRACE_NORMAL , " stop command received " ) ;
* keep_running = 0 ;
return ;
}
@ -1778,7 +1778,7 @@ static void readFromMgmtSocket (n2n_edge_t *eee, int *keep_running) {
msg_len = 0 ;
setTraceLevel ( getTraceLevel ( ) + 1 ) ;
traceEvent ( TRACE_ERROR , " +verb traceLevel=%u " , ( unsigned int ) getTraceLevel ( ) ) ;
traceEvent ( TRACE_NORMAL , " +verb traceLevel=%u " , ( unsigned int ) getTraceLevel ( ) ) ;
msg_len + = snprintf ( ( char * ) ( udp_buf + msg_len ) , ( N2N_PKT_BUF_SIZE - msg_len ) ,
" > +OK traceLevel=%u \n " , ( unsigned int ) getTraceLevel ( ) ) ;
@ -1800,14 +1800,14 @@ static void readFromMgmtSocket (n2n_edge_t *eee, int *keep_running) {
" > -NOK traceLevel=%u \n " , getTraceLevel ( ) ) ;
}
traceEvent ( TRACE_ERROR , " -verb traceLevel=%u " , ( unsigned int ) getTraceLevel ( ) ) ;
traceEvent ( TRACE_NORMAL , " -verb traceLevel=%u " , ( unsigned int ) getTraceLevel ( ) ) ;
sendto ( eee - > udp_mgmt_sock , udp_buf , msg_len , 0 /*flags*/ ,
( struct sockaddr * ) & sender_sock , sizeof ( struct sockaddr_in ) ) ;
return ;
}
traceEvent ( TRACE_DEBUG , " mgmt status rq " ) ;
traceEvent ( TRACE_DEBUG , " mgmt status re quested " ) ;
msg_len = 0 ;
msg_len + = snprintf ( ( char * ) ( udp_buf + msg_len ) , ( N2N_PKT_BUF_SIZE - msg_len ) ,
@ -1979,12 +1979,12 @@ static int find_peer_destination (n2n_edge_t * eee,
time_t now = time ( NULL ) ;
if ( is_multi_broadcast ( mac_address ) ) {
traceEvent ( TRACE_DEBUG , " M ulticast or broadcast destination peer, using supernode" ) ;
traceEvent ( TRACE_DEBUG , " m ulticast or broadcast destination peer, using supernode" ) ;
memcpy ( destination , & ( eee - > curr_sn - > sock ) , sizeof ( struct sockaddr_in ) ) ;
return ( 0 ) ;
}
traceEvent ( TRACE_DEBUG , " Searching destination peer for MAC %s" ,
traceEvent ( TRACE_DEBUG , " searching destination socket for %s" ,
macaddr_str ( mac_buf , mac_address ) ) ;
HASH_FIND_PEER ( eee - > known_peers , mac_address , scan ) ;
@ -1993,7 +1993,7 @@ static int find_peer_destination (n2n_edge_t * eee,
if ( ( now - scan - > last_p2p ) > = ( scan - > timeout / 2 ) ) {
/* Too much time passed since we saw the peer, need to register again
* since the peer address may have changed . */
traceEvent ( TRACE_DEBUG , " R efreshing idle known peer" ) ;
traceEvent ( TRACE_DEBUG , " r efreshing idle known peer" ) ;
HASH_DEL ( eee - > known_peers , scan ) ;
free ( scan ) ;
/* NOTE: registration will be performed upon the receival of the next response packet */
@ -2006,13 +2006,13 @@ static int find_peer_destination (n2n_edge_t * eee,
if ( retval = = 0 ) {
memcpy ( destination , & ( eee - > curr_sn - > sock ) , sizeof ( struct sockaddr_in ) ) ;
traceEvent ( TRACE_DEBUG , " P2P Peer [MAC=%s] not found, using supernode" ,
traceEvent ( TRACE_DEBUG , " p2p peer %s not found, using supernode" ,
macaddr_str ( mac_buf , mac_address ) ) ;
check_query_peer_info ( eee , now , mac_address ) ;
}
traceEvent ( TRACE_DEBUG , " find_peer_address (%s) -> [%s] " ,
traceEvent ( TRACE_DEBUG , " found peer's socket %s [%s] " ,
macaddr_str ( mac_buf , mac_address ) ,
sock_to_cstr ( sockbuf , destination ) ) ;
@ -2039,9 +2039,9 @@ static int send_packet (n2n_edge_t * eee,
is_p2p = find_peer_destination ( eee , dstMac , & destination ) ;
traceEvent ( TRACE_INFO , " Tx PACKET to %s (dest=%s) [%u B ] " ,
sock_to_cstr ( sockbuf , & destination ) ,
macaddr_str ( mac_buf , dstMac ) , pktlen ) ;
traceEvent ( TRACE_INFO , " Tx PACKET of %u bytes to %s [%s ] " ,
pktlen , macaddr_str ( mac_buf , dstMac ) ,
sock_to_cstr ( sockbuf , & destination ) ) ;
if ( is_p2p )
+ + ( eee - > stats . tx_p2p ) ;
@ -2092,7 +2092,7 @@ void edge_send_packet2net (n2n_edge_t * eee,
/* Note: all elements of the_ip are in network order */
if ( * src ! = eee - > device . ip_addr ) {
/* This is a packet that needs to be routed */
traceEvent ( TRACE_INFO , " Discarding routed packet [%s]" ,
traceEvent ( TRACE_INFO , " discarding routed packet destined to [%s]" ,
intoa ( ntohl ( * src ) , ip_buf , sizeof ( ip_buf ) ) ) ;
return ;
} else {
@ -2180,7 +2180,7 @@ void edge_send_packet2net (n2n_edge_t * eee,
pktbuf + idx , N2N_PKT_BUF_SIZE - idx ,
tap_pkt , len , pkt . dstMac ) ;
traceEvent ( TRACE_DEBUG , " Encode %u B PACKET [%u B data, %u B overhead] transform %u" ,
traceEvent ( TRACE_DEBUG , " encode PACKET of %u bytes, %u bytes data, %u bytes overhead, transform %u" ,
( u_int ) idx , ( u_int ) len , ( u_int ) ( idx - len ) , tx_transop_idx ) ;
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED )
@ -2230,13 +2230,13 @@ void edge_read_from_tap (n2n_edge_t * eee) {
) ;
} else {
const uint8_t * mac = eth_pkt ;
traceEvent ( TRACE_DEBUG , " ### Rx TAP packet (%4d) for %s" ,
traceEvent ( TRACE_DEBUG , " Rx TAP packet (%4d) for %s " ,
( signed int ) len , macaddr_str ( mac_buf , mac ) ) ;
if ( eee - > conf . drop_multicast & &
( is_ip6_discovery ( eth_pkt , len ) | |
is_ethMulticast ( eth_pkt , len ) ) ) {
traceEvent ( TRACE_INFO , " Dropping TX multicast" ) ;
traceEvent ( TRACE_INFO , " dropping Tx multicast" ) ;
} else {
if ( ! eee - > last_sup ) {
// drop packets before first registration with supernode
@ -2247,7 +2247,7 @@ void edge_read_from_tap (n2n_edge_t * eee) {
if ( eee - > network_traffic_filter ) {
if ( eee - > network_traffic_filter - > filter_packet_from_tap ( eee - > network_traffic_filter , eee , eth_pkt ,
len ) = = N2N_DROP ) {
traceEvent ( TRACE_DEBUG , " Filtered packet %u" , ( unsigned int ) len ) ;
traceEvent ( TRACE_DEBUG , " filtered packet of size %u" , ( unsigned int ) len ) ;
return ;
}
}
@ -2255,7 +2255,7 @@ void edge_read_from_tap (n2n_edge_t * eee) {
if ( eee - > cb . packet_from_tap ) {
uint16_t tmp_len = len ;
if ( eee - > cb . packet_from_tap ( eee , eth_pkt , & tmp_len ) = = N2N_DROP ) {
traceEvent ( TRACE_DEBUG , " DROP packet %u " , ( unsigned int ) len ) ;
traceEvent ( TRACE_DEBUG , " DROP packet of size %u " , ( unsigned int ) len ) ;
return ;
}
len = tmp_len ;
@ -2311,7 +2311,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
via_multicast = ( in_sock = = eee - > udp_multicast_sock ) ;
traceEvent ( TRACE_DEBUG , " ### Rx N2N UDP (%d) from %s " ,
traceEvent ( TRACE_DEBUG , " Rx N2N_UDP of size %d from [%s] " ,
( signed int ) udp_size , sock_to_cstr ( sockbuf1 , & sender ) ) ;
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED ) {
@ -2335,7 +2335,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
& stamp ) ;
}
if ( ! header_enc ) {
traceEvent ( TRACE_DEBUG , " readFromIPSocket failed to decrypt header. " ) ;
traceEvent ( TRACE_DEBUG , " failed to decrypt header " ) ;
return ;
}
// time stamp verification follows in the packet specific section as it requires to determine the
@ -2350,7 +2350,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
// from some other edge on local network, possibly header encrypted
traceEvent ( TRACE_DEBUG , " dropped packet arriving via multicast due to error while decoding N2N_UDP " ) ;
} else {
traceEvent ( TRACE_WARNING , " failed to decode common section in N2N_UDP " ) ;
traceEvent ( TRACE_INFO , " failed to decode common section in N2N_UDP " ) ;
}
return ; /* failed to decode packet */
}
@ -2363,7 +2363,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
& & ( msg_type ! = MSG_TYPE_REGISTER_SUPER_ACK )
& & ( msg_type ! = MSG_TYPE_REGISTER_SUPER_NAK ) ) {
if ( header_enc ! = 2 ) {
traceEvent ( TRACE_WARNING , " process_udp dropped packet encrypted with static key where dynamic key expected. " ) ;
traceEvent ( TRACE_INFO , " dropped packet encrypted with static key where dynamic key expected " ) ;
return ;
}
}
@ -2374,7 +2374,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
skip_add = SN_ADD_SKIP ;
sn = add_sn_to_list_by_mac_or_sock ( & ( eee - > conf . supernodes ) , & sender , null_mac , & skip_add ) ;
if ( ! sn ) {
traceEvent ( TRACE_DEBUG , " readFromIPSocket dropped incoming data from unknown supernode. " ) ;
traceEvent ( TRACE_DEBUG , " dropped incoming data from unknown supernode " ) ;
return ;
}
}
@ -2389,14 +2389,14 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED ) {
if ( ! find_peer_time_stamp_and_verify ( eee , sn , pkt . srcMac , stamp , TIME_STAMP_ALLOW_JITTER ) ) {
traceEvent ( TRACE_DEBUG , " readFromIPSocket dropped PACKET due to time stamp error. " ) ;
traceEvent ( TRACE_DEBUG , " dropped PACKET due to time stamp error " ) ;
return ;
}
}
if ( ! eee - > last_sup ) {
// drop packets received before first registration with supernode
traceEvent ( TRACE_DEBUG , " readFromIPSocket dropped PACKET recevied before first registration with supernode. " ) ;
traceEvent ( TRACE_DEBUG , " dropped PACKET recevied before first registration with supernode " ) ;
return ;
}
@ -2409,13 +2409,14 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
* a valid channel . We still use check_peer_registration_needed in
* handle_PACKET to double check this .
*/
traceEvent ( TRACE_DEBUG , " Got P2P packet " ) ;
traceEvent ( TRACE_DEBUG , " [P2P] Rx data from %s [%u B] " , sock_to_cstr ( sockbuf1 , & sender ) , udp_size ) ;
traceEvent ( TRACE_DEBUG , " [p2p] from %s " ,
macaddr_str ( mac_buf1 , pkt . srcMac ) ) ;
find_and_remove_peer ( & eee - > pending_peers , pkt . srcMac ) ;
} else {
/* [PsP] : edge Peer->Supernode->edge Peer */
traceEvent ( TRACE_DEBUG , " [PsP] Rx data from %s (Via=%s) [%u B] " ,
sock_to_cstr ( sockbuf2 , orig_sender ) , sock_to_cstr ( sockbuf1 , & sender ) , udp_size ) ;
traceEvent ( TRACE_DEBUG , " [pSp] from %s via [%s] " ,
macaddr_str ( mac_buf1 , pkt . srcMac ) ,
sock_to_cstr ( sockbuf1 , & sender ) ) ;
}
/* Update the sender in peer table entry */
@ -2437,7 +2438,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED ) {
if ( ! find_peer_time_stamp_and_verify ( eee , sn , reg . srcMac , stamp ,
via_multicast ? TIME_STAMP_ALLOW_JITTER : TIME_STAMP_NO_JITTER ) ) {
traceEvent ( TRACE_DEBUG , " readFromIPSocket dropped REGISTER due to time stamp error. " ) ;
traceEvent ( TRACE_DEBUG , " dropped REGISTER due to time stamp error " ) ;
return ;
}
}
@ -2446,12 +2447,12 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
orig_sender = & ( reg . sock ) ;
if ( via_multicast & & ! memcmp ( reg . srcMac , eee - > device . mac_addr , N2N_MAC_SIZE ) ) {
traceEvent ( TRACE_DEBUG , " S kipping REGISTER from self" ) ;
traceEvent ( TRACE_DEBUG , " s kipping REGISTER from self" ) ;
break ;
}
if ( ! via_multicast & & memcmp ( reg . dstMac , eee - > device . mac_addr , N2N_MAC_SIZE ) ) {
traceEvent ( TRACE_DEBUG , " S kipping REGISTER for other peer" ) ;
traceEvent ( TRACE_DEBUG , " s kipping REGISTER for other peer" ) ;
break ;
}
@ -2461,16 +2462,17 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
* a valid channel . We still use check_peer_registration_needed below
* to double check this .
*/
traceEvent ( TRACE_DEBUG , " Got P2P register " ) ;
traceEvent ( TRACE_INFO , " [P2P] Rx REGISTER from %s " , sock_to_cstr ( sockbuf1 , & sender ) ) ;
traceEvent ( TRACE_INFO , " [p2p] Rx REGISTER from %s [%s] " ,
macaddr_str ( mac_buf1 , reg . srcMac ) ,
sock_to_cstr ( sockbuf1 , & sender ) ) ;
find_and_remove_peer ( & eee - > pending_peers , reg . srcMac ) ;
/* NOTE: only ACK to peers */
send_register_ack ( eee , orig_sender , & reg ) ;
} else {
traceEvent ( TRACE_INFO , " [PsP] Rx REGISTER src=%s dst=%s from sn=%s (edge:%s) " ,
macaddr_str ( mac_buf1 , reg . srcMac ) , macaddr_str ( mac_buf2 , reg . dstMac ) ,
sock_to_cstr ( sockbuf1 , & sender ) , sock_to_cstr ( sockbuf2 , orig_ sender ) ) ;
traceEvent ( TRACE_INFO , " [pSp] Rx REGISTER from %s [%s] to %s via [%s] " ,
macaddr_str ( mac_buf1 , reg . srcMac ) , sock_to_cstr ( sockbuf2 , orig_sender ) ,
macaddr_str ( mac_buf2 , reg . dstMac ) , sock_to_cstr ( sockbuf1 , & sender ) ) ;
}
check_peer_registration_needed ( eee , from_supernode , via_multicast ,
@ -2486,7 +2488,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED ) {
if ( ! find_peer_time_stamp_and_verify ( eee , sn , ra . srcMac , stamp , TIME_STAMP_NO_JITTER ) ) {
traceEvent ( TRACE_DEBUG , " readFromIPSocket dropped REGISTER_ACK due to time stamp error. " ) ;
traceEvent ( TRACE_DEBUG , " dropped REGISTER_ACK due to time stamp error " ) ;
return ;
}
}
@ -2494,11 +2496,11 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( is_valid_peer_sock ( & ra . sock ) )
orig_sender = & ( ra . sock ) ;
traceEvent ( TRACE_INFO , " Rx REGISTER_ACK src=%s dst=%s from peer %s (%s) " ,
traceEvent ( TRACE_INFO , " Rx REGISTER_ACK from %s [%s] to %s via [%s] " ,
macaddr_str ( mac_buf1 , ra . srcMac ) ,
sock_to_cstr ( sockbuf2 , orig_sender ) ,
macaddr_str ( mac_buf2 , ra . dstMac ) ,
sock_to_cstr ( sockbuf1 , & sender ) ,
sock_to_cstr ( sockbuf2 , orig_sender ) ) ;
sock_to_cstr ( sockbuf1 , & sender ) ) ;
peer_set_p2p_confirmed ( eee , ra . srcMac , & sender , now ) ;
break ;
@ -2514,7 +2516,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
int skip_add ;
if ( ! ( eee - > sn_wait ) ) {
traceEvent ( TRACE_DEBUG , " Rx REGISTER_SUPER_ACK with no outstanding REGISTER_SUPER. " ) ;
traceEvent ( TRACE_DEBUG , " Rx REGISTER_SUPER_ACK with no outstanding REGISTER_SUPER " ) ;
return ;
}
@ -2523,7 +2525,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED ) {
if ( ! find_peer_time_stamp_and_verify ( eee , sn , ra . srcMac , stamp , TIME_STAMP_NO_JITTER ) ) {
traceEvent ( TRACE_DEBUG , " readFromIPSocket dropped REGISTER_SUPER_ACK due to time stamp error. " ) ;
traceEvent ( TRACE_DEBUG , " dropped REGISTER_SUPER_ACK due to time stamp error " ) ;
return ;
}
}
@ -2532,20 +2534,20 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( eee - > conf . shared_secret ) {
speck_128_encrypt ( hash_buf , ( speck_context_t * ) eee - > conf . shared_secret_ctx ) ;
if ( memcmp ( hash_buf , udp_buf + udp_size - N2N_REG_SUP_HASH_CHECK_LEN /* length is has already been checked */ , N2N_REG_SUP_HASH_CHECK_LEN ) ) {
traceEvent ( TRACE_INFO , " Rx REGISTER_SUPER_ACK with wrong hash. " ) ;
traceEvent ( TRACE_INFO , " Rx REGISTER_SUPER_ACK with wrong hash " ) ;
return ;
}
}
if ( memcmp ( ra . cookie , eee - > curr_sn - > last_cookie , N2N_COOKIE_SIZE ) ) {
traceEvent ( TRACE_INFO , " Rx REGISTER_SUPER_ACK with wrong or old cookie. " ) ;
traceEvent ( TRACE_INFO , " Rx REGISTER_SUPER_ACK with wrong or old cookie " ) ;
return ;
}
if ( handle_remote_auth ( eee , sn , & ( ra . auth ) ) ) {
traceEvent ( TRACE_INFO , " Rx REGISTER_SUPER_ACK with wrong or old response to challenge. " ) ;
traceEvent ( TRACE_INFO , " Rx REGISTER_SUPER_ACK with wrong or old response to challenge " ) ;
if ( eee - > conf . shared_secret ) {
traceEvent ( TRACE_NORMAL , " Rx REGISTER_SUPER_ACK with wrong or old response to challenge, maybe indicating wrong federation public key (-P). " ) ;
traceEvent ( TRACE_NORMAL , " Rx REGISTER_SUPER_ACK with wrong or old response to challenge, maybe indicating wrong federation public key (-P) " ) ;
}
return ;
}
@ -2553,7 +2555,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( is_valid_peer_sock ( & ra . sock ) )
orig_sender = & ( ra . sock ) ;
traceEvent ( TRACE_INFO , " Rx REGISTER_SUPER_ACK from MAC %s [%s] (external %s). Attempts %u " ,
traceEvent ( TRACE_INFO , " Rx REGISTER_SUPER_ACK from %s [%s] (external %s) with %u attempts left " ,
macaddr_str ( mac_buf1 , ra . srcMac ) ,
sock_to_cstr ( sockbuf1 , & sender ) ,
sock_to_cstr ( sockbuf2 , orig_sender ) ,
@ -2582,7 +2584,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
}
sn_selection_criterion_default ( & ( sn - > selection_criterion ) ) ;
sn - > last_seen = 0 ; /* as opposed to payload handling in supernode */
traceEvent ( TRACE_NORMAL , " S upernode '%s' added to the list of supernodes." , sn - > ip_addr ) ;
traceEvent ( TRACE_NORMAL , " s upernode '%s' added to the list of supernodes." , sn - > ip_addr ) ;
}
// shift to next payload entry
payload + + ;
@ -2603,8 +2605,8 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
// still null_mac) this allows reliable in/out PACKET drop if not really registered with a supernode yet
if ( ! is_null_mac ( eee - > device . mac_addr ) ) {
if ( ! eee - > last_sup ) {
// indicates successful connection between the edge and a supernode
traceEvent ( TRACE_NORMAL , " [OK] Edge Peer <<< ================ >>> Super N ode " ) ;
// indicates first successful connection between the edge and a supernode
traceEvent ( TRACE_NORMAL , " [OK] edge <<< ================ >>> supern ode " ) ;
// send gratuitous ARP only upon first registration with supernode
send_grat_arps ( eee ) ;
}
@ -2630,7 +2632,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( ! ( eee - > sn_wait ) ) {
traceEvent ( TRACE_DEBUG , " Rx REGISTER_SUPER_NAK with no outstanding REGISTER_SUPER. " ) ;
traceEvent ( TRACE_DEBUG , " Rx REGISTER_SUPER_NAK with no outstanding REGISTER_SUPER " ) ;
return ;
}
@ -2639,13 +2641,13 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED ) {
if ( ! find_peer_time_stamp_and_verify ( eee , sn , nak . srcMac , stamp , TIME_STAMP_NO_JITTER ) ) {
traceEvent ( TRACE_DEBUG , " readFromIPSocket dropped REGISTER_SUPER_NAK due to time stamp error. " ) ;
traceEvent ( TRACE_DEBUG , " dropped REGISTER_SUPER_NAK due to time stamp error " ) ;
return ;
}
}
if ( memcmp ( nak . cookie , eee - > curr_sn - > last_cookie , N2N_COOKIE_SIZE ) ) {
traceEvent ( TRACE_DEBUG , " Rx REGISTER_SUPER_NAK with wrong or old cookie. " ) ;
traceEvent ( TRACE_DEBUG , " Rx REGISTER_SUPER_NAK with wrong or old cookie " ) ;
return ;
}
@ -2657,9 +2659,9 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( ( memcmp ( nak . srcMac , eee - > device . mac_addr , sizeof ( n2n_mac_t ) ) ) = = 0 ) {
if ( eee - > conf . shared_secret ) {
traceEvent ( TRACE_ERROR , " Authentication error. username or password not recognized by supernode. " ) ;
traceEvent ( TRACE_ERROR , " authentication error, username or password not recognized by supernode " ) ;
} else {
traceEvent ( TRACE_ERROR , " Authentication error. MAC or IP address already in use or not released yet by supernode. " ) ;
traceEvent ( TRACE_ERROR , " authentication error, MAC or IP address already in use or not released yet by supernode" ) ;
}
// REVISIT: the following portion is too harsh, repeated error warning should be sufficient until it eventually is resolved,
// preventing de-auth attacks
@ -2687,15 +2689,15 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED ) {
if ( ! find_peer_time_stamp_and_verify ( eee , sn , null_mac , stamp , TIME_STAMP_ALLOW_JITTER ) ) {
traceEvent ( TRACE_DEBUG , " readFromIPSocket dropped PEER_INFO due to time stamp error. " ) ;
traceEvent ( TRACE_DEBUG , " dropped PEER_INFO due to time stamp error " ) ;
return ;
}
}
if ( ! is_valid_peer_sock ( & pi . sock ) ) {
traceEvent ( TRACE_DEBUG , " Skip invalid PEER_INFO %s [%s]" ,
sock_to_cstr ( sockbuf1 , & pi . sock ) ,
macaddr_str ( mac_buf1 , pi . mac ) ) ;
traceEvent ( TRACE_DEBUG , " skip invalid PEER_INFO from %s [%s]" ,
macaddr_str ( mac_buf1 , pi . mac ) ,
sock_to_cstr ( sockbuf1 , & pi . sock ) ) ;
break ;
}
@ -2708,7 +2710,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
scan - > last_seen = now ;
/* The data type depends on the actual selection strategy that has been chosen. */
sn_selection_criterion_calculate ( eee , scan , & pi . data ) ;
traceEvent ( TRACE_INFO , " Rx PONG from supernode ' %s' " ,
traceEvent ( TRACE_INFO , " Rx PONG from supernode %s " ,
macaddr_str ( mac_buf1 , pi . srcMac ) ) ;
break ;
@ -2719,7 +2721,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( scan ) {
scan - > sock = pi . sock ;
traceEvent ( TRACE_INFO , " Rx PEER_INFO for %s: is at %s " ,
traceEvent ( TRACE_INFO , " Rx PEER_INFO %s can be found at [%s] " ,
macaddr_str ( mac_buf1 , pi . mac ) ,
sock_to_cstr ( sockbuf1 , & pi . sock ) ) ;
@ -2737,7 +2739,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
if ( eee - > conf . header_encryption = = HEADER_ENCRYPTION_ENABLED ) {
if ( ! find_peer_time_stamp_and_verify ( eee , sn , null_mac , stamp , TIME_STAMP_NO_JITTER ) ) {
traceEvent ( TRACE_DEBUG , " readFromIPSocket dropped RE_REGISTER due to time stamp error. " ) ;
traceEvent ( TRACE_DEBUG , " dropped RE_REGISTER due to time stamp error " ) ;
return ;
}
}
@ -2746,7 +2748,7 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
// key is required for continous traffic flow, in other modes edge will realize
// changes with regular recurring REGISTER_SUPER
if ( ! eee - > conf . shared_secret ) {
traceEvent ( TRACE_DEBUG , " readFromIPScoket dropped RE_REGISTER_SUPER as not in user/pw auth mode. " ) ;
traceEvent ( TRACE_DEBUG , " dropped RE_REGISTER_SUPER as not in user/pw auth mode " ) ;
return ;
}
@ -2759,13 +2761,13 @@ void process_udp (n2n_edge_t *eee, const struct sockaddr_in *sender_sock, const
default :
/* Not a known message type */
traceEvent ( TRACE_WARNING , " U nable to handle packet type %d: ignored" , ( signed int ) msg_type ) ;
traceEvent ( TRACE_WARNING , " u nable to handle packet type %d: ignored" , ( signed int ) msg_type ) ;
return ;
} /* switch(msg_type) */
} else if ( from_supernode ) /* if(community match) */
traceEvent ( TRACE_WARNING , " R eceived packet with unknown community" ) ;
traceEvent ( TRACE_WARNING , " r eceived packet with unknown community" ) ;
else
traceEvent ( TRACE_INFO , " I gnoring packet with unknown community" ) ;
traceEvent ( TRACE_INFO , " i gnoring packet with unknown community" ) ;
}
@ -2794,9 +2796,9 @@ int fetch_and_eventually_process_data (n2n_edge_t *eee, SOCKET sock,
) {
/* For UDP bread of zero just means no data (unlike TCP). */
/* The fd is no good now. Maybe we lost our interface. */
traceEvent ( TRACE_ERROR , " fetch_and_eventually_process_data's recvfrom() failed %d errno %d (%s)" , bread , errno , strerror ( errno ) ) ;
traceEvent ( TRACE_ERROR , " recvfrom() failed %d errno %d (%s) " , bread , errno , strerror ( errno ) ) ;
# ifdef WIN32
traceEvent ( TRACE_ERROR , " fetch_and_eventually_process_data's WSAGetLastError(): %u" , WSAGetLastError ( ) ) ;
traceEvent ( TRACE_ERROR , " WSAGetLastError(): %u " , WSAGetLastError ( ) ) ;
# endif
return - 1 ;
}
@ -2817,13 +2819,13 @@ int fetch_and_eventually_process_data (n2n_edge_t *eee, SOCKET sock,
pktbuf + * position , * expected - * position , 0 /*flags*/ ,
( struct sockaddr * ) & sender_sock , ( socklen_t * ) & i ) ;
if ( ( bread < = 0 ) & & ( errno ) ) {
traceEvent ( TRACE_ERROR , " fetch_and_eventually_process_data's recvfrom() failed %d errno %d (%s)" , bread , errno , strerror ( errno ) ) ;
traceEvent ( TRACE_ERROR , " recvfrom() failed %d errno %d (%s) " , bread , errno , strerror ( errno ) ) ;
# ifdef WIN32
traceEvent ( TRACE_ERROR , " fetch_and_eventually_process_data's WSAGetLastError(): %u" , WSAGetLastError ( ) ) ;
traceEvent ( TRACE_ERROR , " WSAGetLastError(): %u " , WSAGetLastError ( ) ) ;
# endif
supernode_disconnect ( eee ) ;
eee - > sn_wait = 1 ;
traceEvent ( TRACE_DEBUG , " fetch_and_eventually_process_data disconnected supernode due to connection error" ) ;
traceEvent ( TRACE_DEBUG , " disconnected supernode due to connection error " ) ;
goto tcp_done ;
}
* position = * position + bread ;
@ -2835,7 +2837,7 @@ int fetch_and_eventually_process_data (n2n_edge_t *eee, SOCKET sock,
if ( * expected > N2N_PKT_BUF_SIZE ) {
supernode_disconnect ( eee ) ;
eee - > sn_wait = 1 ;
traceEvent ( TRACE_DEBUG , " run_edge_loop disconnected supernode due to too many bytes expected" ) ;
traceEvent ( TRACE_DEBUG , " disconnected supernode due to too many bytes expected " ) ;
goto tcp_done ;
}
} else {
@ -3018,7 +3020,7 @@ int run_edge_loop (n2n_edge_t *eee, int *keep_running) {
( ( now - lastIfaceCheck ) > IFACE_UPDATE_INTERVAL ) ) {
uint32_t old_ip = eee - > device . ip_addr ;
traceEvent ( TRACE_NORMAL , " Re-checking dynamic IP address. " ) ;
traceEvent ( TRACE_NORMAL , " re-checking dynamic IP address " ) ;
tuntap_get_address ( & ( eee - > device ) ) ;
lastIfaceCheck = now ;
@ -3093,7 +3095,7 @@ static int edge_init_sockets (n2n_edge_t *eee) {
eee - > udp_mgmt_sock = open_socket ( eee - > conf . mgmt_port , 0 /* bind LOOPBACK */ , 0 , 0 /* UDP */ ) ;
if ( eee - > udp_mgmt_sock < 0 ) {
traceEvent ( TRACE_ERROR , " F ailed to bind management UDP port %u" , eee - > conf . mgmt_port ) ;
traceEvent ( TRACE_ERROR , " f ailed to bind management UDP port %u" , eee - > conf . mgmt_port ) ;
return ( - 2 ) ;
}
@ -3386,12 +3388,12 @@ static int edge_init_routes_linux (n2n_edge_t *eee, n2n_route_t *routes, uint16_
uint32_t * a ;
if ( eee - > sn_route_to_clean ) {
traceEvent ( TRACE_ERROR , " O nly one default gateway route allowed" ) ;
traceEvent ( TRACE_ERROR , " o nly one default gateway route allowed" ) ;
return ( - 1 ) ;
}
if ( eee - > conf . sn_num ! = 1 ) {
traceEvent ( TRACE_ERROR , " O nly one supernode supported with routes" ) ;
traceEvent ( TRACE_ERROR , " o nly one supernode supported with routes" ) ;
return ( - 1 ) ;
}
@ -3399,7 +3401,7 @@ static int edge_init_routes_linux (n2n_edge_t *eee, n2n_route_t *routes, uint16_
return ( - 1 ) ;
if ( sn . family ! = AF_INET ) {
traceEvent ( TRACE_ERROR , " O nly IPv4 routes supported" ) ;
traceEvent ( TRACE_ERROR , " o nly IPv4 routes supported" ) ;
return ( - 1 ) ;
}
@ -3465,7 +3467,16 @@ static int edge_init_routes_win (n2n_edge_t *eee, n2n_route_t *routes, uint16_t
for ( i = 0 ; i < num_routes ; i + + ) {
n2n_route_t * route = & routes [ i ] ;
if ( ( route - > net_addr = = 0 ) & & ( route - > net_bitlen = = 0 ) ) {
traceEvent ( TRACE_NORMAL , " Warning: The 0.0.0.0/0 route settings are not supported on Windows " ) ;
// REVISIT: there might be a chance to get it working on Windows following the hints at
// https://docs.microsoft.com/en-us/windows/win32/api/netioapi/ns-netioapi-mib_ipinterface_row
//
// " The DisableDefaultRoutes member of the MIB_IPINTERFACE_ROW structure can be used to disable
// using the default route on an interface. This member can be used as a security measure by
// VPN clients to restrict split tunneling when split tunneling is not required by the VPN client.
// A VPN client can call the SetIpInterfaceEntry function to set the DisableDefaultRoutes member
// to TRUE when required. A VPN client can query the current state of the DisableDefaultRoutes
// member by calling the GetIpInterfaceEntry function. "
traceEvent ( TRACE_WARNING , " the 0.0.0.0/0 route settings are not supported on Windows " ) ;
return ( - 1 ) ;
} else {
/* ip route add net via n2n_gateway */
@ -3581,7 +3592,7 @@ int edge_conf_add_supernode (n2n_edge_conf_t *conf, const char *ip_and_port) {
rv = supernode2sock ( sock , ip_and_port ) ;
if ( rv < - 2 ) { /* we accept resolver failure as it might resolve later */
traceEvent ( TRACE_WARNING , " I nvalid supernode parameter." ) ;
traceEvent ( TRACE_WARNING , " i nvalid supernode parameter." ) ;
free ( sock ) ;
return 1 ;
}
@ -3602,7 +3613,7 @@ int edge_conf_add_supernode (n2n_edge_conf_t *conf, const char *ip_and_port) {
free ( sock ) ;
traceEvent ( TRACE_NORMAL , " A dding supernode = %s" , sn - > ip_addr ) ;
traceEvent ( TRACE_NORMAL , " a dding supernode = %s" , sn - > ip_addr ) ;
conf - > sn_num + + ;
return 0 ;
Logan oos Even
3 years ago
GitHub