X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fnet.h;h=33d273593cf3a2e917e9cd804e086f37748d1c8b;hb=5216839fa30dfbf5204b274b4e8becbb34e6ca21;hp=b5692ef23593c120e9729d1840ddafe77c445868;hpb=9e44f116bf0f72d1dd4f099440a351dbe0a74573;p=meshlink diff --git a/src/net.h b/src/net.h index b5692ef2..33d27359 100644 --- a/src/net.h +++ b/src/net.h @@ -1,7 +1,6 @@ /* net.h -- header for net.c - Copyright (C) 1998-2004 Ivo Timmermans - 2000-2004 Guus Sliepen + Copyright (C) 2014 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -13,147 +12,111 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - $Id$ + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef __TINC_NET_H__ #define __TINC_NET_H__ -#include - -#include "ipv6.h" +#include "event.h" +#include "sockaddr.h" #ifdef ENABLE_JUMBOGRAMS -#define MTU 9018 /* 9000 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */ +#define MTU 9018 /* 9000 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */ #else -#define MTU 1518 /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */ +#define MTU 1518 /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */ #endif -#define MAXSIZE (MTU + 4 + EVP_MAX_BLOCK_LENGTH + EVP_MAX_MD_SIZE + MTU/64 + 20) /* MTU + seqno + padding + HMAC + compressor overhead */ -#define MAXBUFSIZE ((MAXSIZE > 2048 ? MAXSIZE : 2048) + 128) /* Enough room for a request with a MAXSIZEd packet or a 8192 bits RSA key */ - -#define MAXSOCKETS 128 /* Overkill... */ - -#define MAXQUEUELENGTH 8 /* Maximum number of packats in a single queue */ - -typedef struct mac_t { - uint8_t x[6]; -} mac_t; - -typedef struct ipv4_t { - uint8_t x[4]; -} ipv4_t; - -typedef struct ipv6_t { - uint16_t x[8]; -} ipv6_t; - -typedef short length_t; +/* MAXSIZE is the maximum size of an encapsulated packet: MTU + seqno + HMAC + compressor overhead */ +#define MAXSIZE (MTU + 4 + 32 + MTU/64 + 20) -#define AF_UNKNOWN 255 - -struct sockaddr_unknown { - uint16_t family; - uint16_t pad1; - uint32_t pad2; - char *address; - char *port; -}; - -typedef union sockaddr_t { - struct sockaddr sa; - struct sockaddr_in in; - struct sockaddr_in6 in6; - struct sockaddr_unknown unknown; -#ifdef HAVE_STRUCT_SOCKADDR_STORAGE - struct sockaddr_storage storage; -#endif -} sockaddr_t; - -#ifdef SA_LEN -#define SALEN(s) SA_LEN(&s) -#else -#define SALEN(s) (s.sa_family==AF_INET?sizeof(struct sockaddr_in):sizeof(struct sockaddr_in6)) -#endif +/* MAXBUFSIZE is the maximum size of a request: enough for a MAXSIZEd packet or a 8192 bits RSA key */ +#define MAXBUFSIZE ((MAXSIZE > 2048 ? MAXSIZE : 2048) + 128) typedef struct vpn_packet_t { - length_t len; /* the actual number of bytes in the `data' field */ - int priority; /* priority or TOS */ - uint32_t seqno; /* 32 bits sequence number (network byte order of course) */ + struct { + unsigned int probe:1; + unsigned int tcp:1; + }; + uint16_t len; /* the actual number of bytes in the `data' field */ uint8_t data[MAXSIZE]; } vpn_packet_t; -typedef struct queue_element_t { - void *packet; - struct queue_element_t *prev; - struct queue_element_t *next; -} queue_element_t; +/* Packet types when using SPTPS */ -typedef struct packet_queue_t { - queue_element_t *head; - queue_element_t *tail; -} packet_queue_t; +#define PKT_COMPRESSED 1 +#define PKT_PROBE 4 -typedef struct listen_socket_t { - int tcp; - int udp; - sockaddr_t sa; -} listen_socket_t; +typedef enum packet_type_t { + PACKET_NORMAL, + PACKET_COMPRESSED, + PACKET_PROBE +} packet_type_t; #include "conf.h" +#include "list.h" typedef struct outgoing_t { char *name; int timeout; + struct splay_tree_t *config_tree; struct config_t *cfg; struct addrinfo *ai; struct addrinfo *aip; + timeout_t ev; } outgoing_t; -extern int maxtimeout; -extern int seconds_till_retry; +extern int maxoutbufsize; extern int addressfamily; +extern unsigned replaywin; -extern listen_socket_t listen_socket[MAXSOCKETS]; -extern int listen_sockets; -extern int keyexpires; extern int keylifetime; +extern int max_connection_burst; extern bool do_prune; -extern bool do_purge; -extern char *myport; -extern time_t now; -extern EVP_CIPHER_CTX packet_ctx; +extern int autoconnect; /* Yes, very strange placement indeed, but otherwise the typedefs get all tangled up */ #include "connection.h" #include "node.h" extern void retry_outgoing(outgoing_t *); -extern void handle_incoming_vpn_data(int); +extern void handle_incoming_vpn_data(void *, int); extern void finish_connecting(struct connection_t *); -extern void do_outgoing_connection(struct connection_t *); -extern bool handle_new_meta_connection(int); +extern bool do_outgoing_connection(struct outgoing_t *); +extern void handle_new_meta_connection(void *, int); extern int setup_listen_socket(const sockaddr_t *); extern int setup_vpn_in_socket(const sockaddr_t *); -extern void send_packet(const struct node_t *, vpn_packet_t *); -extern void receive_tcppacket(struct connection_t *, char *, int); -extern void broadcast_packet(const struct node_t *, vpn_packet_t *); -extern bool setup_network_connections(void); +extern bool send_sptps_data(void *handle, uint8_t type, const char *data, size_t len); +extern bool receive_sptps_record(void *handle, uint8_t type, const char *data, uint16_t len); +extern void send_packet(struct node_t *, struct vpn_packet_t *); +extern void receive_tcppacket(struct connection_t *, const char *, int); +extern void broadcast_packet(const struct node_t *, struct vpn_packet_t *); +extern char *get_name(void); +extern bool setup_myself_reloadable(void); +extern bool setup_network(void); extern void setup_outgoing_connection(struct outgoing_t *); extern void try_outgoing_connections(void); extern void close_network_connections(void); extern int main_loop(void); extern void terminate_connection(struct connection_t *, bool); -extern void flush_queue(struct node_t *); -extern bool read_rsa_public_key(struct connection_t *); +extern bool node_read_ecdsa_public_key(struct node_t *); +extern bool read_ecdsa_public_key(struct connection_t *); extern void send_mtu_probe(struct node_t *); +extern void handle_device_data(void *, int); +extern void handle_meta_connection_data(struct connection_t *); +extern void regenerate_key(void); +extern void purge(void); +extern void retry(void); +extern int reload_configuration(void); +extern void load_all_subnets(void); +extern void load_all_nodes(void); #ifndef HAVE_MINGW #define closesocket(s) close(s) +#else +extern CRITICAL_SECTION mutex; #endif -#endif /* __TINC_NET_H__ */ +#endif /* __TINC_NET_H__ */