X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet.h;h=0c3d64c32c685c0d74bf46b12f62d4e293b6526b;hp=28ec2eeb90c589c0ee559c52bbef503de75c42cc;hb=706d855e507980de3845556989d7de7a3b9c76e8;hpb=7e1117197ca4fc62af93fda50e28e0ff06cb736c diff --git a/src/net.h b/src/net.h index 28ec2eeb..0c3d64c3 100644 --- a/src/net.h +++ b/src/net.h @@ -1,7 +1,7 @@ /* net.h -- header for net.c - Copyright (C) 1998-2005 Ivo Timmermans - 2000-2006 Guus Sliepen + Copyright (C) 1998-2005 Ivo Timmermans + 2000-2014 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 @@ -13,33 +13,32 @@ 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 - #include "ipv6.h" +#include "cipher.h" +#include "digest.h" +#include "event.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 */ +/* MAXSIZE is the maximum size of an encapsulated packet: MTU + seqno + srcid + dstid + padding + HMAC + compressor overhead */ +#define MAXSIZE (MTU + 4 + sizeof(node_id_t) + sizeof(node_id_t) + CIPHER_MAX_BLOCK_SIZE + DIGEST_MAX_SIZE + MTU/64 + 20) -#define MAXSOCKETS 8 /* Probably overkill... */ +/* 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) -#define MAXQUEUELENGTH 8 /* Maximum number of packats in a single queue */ +#define MAXSOCKETS 8 /* Probably overkill... */ typedef struct mac_t { uint8_t x[6]; @@ -53,7 +52,12 @@ typedef struct ipv6_t { uint16_t x[8]; } ipv6_t; +typedef struct node_id_t { + uint8_t x[6]; +} node_id_t; + typedef short length_t; +typedef uint32_t seqno_t; #define AF_UNKNOWN 255 @@ -81,85 +85,143 @@ typedef union sockaddr_t { #define SALEN(s) (s.sa_family==AF_INET?sizeof(struct sockaddr_in):sizeof(struct sockaddr_in6)) #endif +#define SEQNO(x) ((x)->data + (x)->offset - 4) +#define SRCID(x) ((node_id_t *)((x)->data + (x)->offset - 6)) +#define DSTID(x) ((node_id_t *)((x)->data + (x)->offset - 12)) +#define DATA(x) ((x)->data + (x)->offset) +#define DEFAULT_PACKET_OFFSET 12 + 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) */ + length_t len; /* The actual number of valid bytes in the `data' field (including seqno or dstid/srcid) */ + length_t offset; /* Offset in the buffer where the packet data starts (righter after seqno or dstid/srcid) */ + int priority; /* priority or TOS */ 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_MAC 2 +#define PKT_PROBE 4 + +typedef enum packet_type_t { + PACKET_NORMAL, + PACKET_COMPRESSED, + PACKET_PROBE +} packet_type_t; typedef struct listen_socket_t { - struct event ev_tcp; - struct event ev_udp; - int tcp; - int udp; + io_t tcp; + io_t udp; sockaddr_t sa; + bool bindto; } listen_socket_t; #include "conf.h" +#include "list.h" typedef struct outgoing_t { char *name; int timeout; + splay_tree_t *config_tree; struct config_t *cfg; struct addrinfo *ai; struct addrinfo *aip; - struct event ev; + timeout_t ev; } outgoing_t; +extern list_t *outgoing_list; + extern int maxoutbufsize; extern int seconds_till_retry; extern int addressfamily; +extern unsigned replaywin; +extern bool localdiscovery; + +extern bool udp_discovery; +extern int udp_discovery_keepalive_interval; +extern int udp_discovery_interval; +extern int udp_discovery_timeout; + +extern int mtu_info_interval; +extern int udp_info_interval; extern listen_socket_t listen_socket[MAXSOCKETS]; extern int listen_sockets; +extern io_t unix_socket; extern int keylifetime; +extern int udp_rcvbuf; +extern int udp_sndbuf; +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 bool device_standby; +extern bool autoconnect; +extern bool disablebuggypeers; +extern int contradicting_add_edge; +extern int contradicting_del_edge; +extern time_t last_config_check; + +extern char *proxyhost; +extern char *proxyport; +extern char *proxyuser; +extern char *proxypass; +typedef enum proxytype_t { + PROXY_NONE = 0, + PROXY_SOCKS4, + PROXY_SOCKS4A, + PROXY_SOCKS5, + PROXY_HTTP, + PROXY_EXEC, +} proxytype_t; +extern proxytype_t proxytype; + +extern char *scriptinterpreter; +extern char *scriptextension; /* 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, short, void *); +extern void handle_incoming_vpn_data(void *, int); extern void finish_connecting(struct connection_t *); -extern void do_outgoing_connection(struct connection_t *); -extern void handle_new_meta_connection(int, short, void *); +extern bool do_outgoing_connection(struct outgoing_t *); +extern void handle_new_meta_connection(void *, int); +extern void handle_new_unix_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 bool send_sptps_data(node_t *to, node_t *from, int type, const void *data, size_t len); +extern bool receive_sptps_record(void *handle, uint8_t type, const void *data, uint16_t len); +extern void send_packet(struct node_t *, vpn_packet_t *); +extern void receive_tcppacket(struct connection_t *, const char *, int); +extern bool receive_tcppacket_sptps(struct connection_t *, const char *, int); extern void broadcast_packet(const struct node_t *, vpn_packet_t *); -extern bool setup_network_connections(void); +extern char *get_name(void); +extern void device_enable(void); +extern void device_disable(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 node_read_ecdsa_public_key(struct node_t *); +extern bool read_ecdsa_public_key(struct connection_t *); extern bool read_rsa_public_key(struct connection_t *); -extern void send_mtu_probe(struct node_t *); -extern void handle_device_data(int, short, void *); -extern void handle_meta_connection_data(int, short, void *); -extern void regenerate_key(); +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); +extern void try_tx(struct node_t *n, bool); #ifndef HAVE_MINGW #define closesocket(s) close(s) #endif -#endif /* __TINC_NET_H__ */ +#endif /* __TINC_NET_H__ */