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edge.h
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edge.h
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#ifndef _EDGE_H_
#define _EDGE_H_
#include "n2n.h"
#include "n2n_transforms.h"
#include <assert.h>
#include <sys/stat.h>
#include "minilzo.h"
#if defined(_DARWIN_)
#define N2N_CONNECT @"N2NEdgeConnect"
#define N2N_CONNECTING @"N2NEdgeConnecting"
#define N2N_CONNECTED @"N2NEdgeConnected"
#define N2N_DISCONNECT @"N2NEdgeDisconnect"
#define N2N_DISCONNECTING @"N2NEdgeDisconnecting"
#define N2N_DISCONNECTED @"N2NEdgeDisconnected"
#endif
#if defined(DEBUG)
#define SOCKET_TIMEOUT_INTERVAL_SECS 5
#define REGISTER_SUPER_INTERVAL_DFL 20 /* sec */
#else /* #if defined(DEBUG) */
#define SOCKET_TIMEOUT_INTERVAL_SECS 10
#define REGISTER_SUPER_INTERVAL_DFL 60 /* sec */
#endif /* #if defined(DEBUG) */
#define REGISTER_SUPER_INTERVAL_MIN 20 /* sec */
#define REGISTER_SUPER_INTERVAL_MAX 3600 /* sec */
#define IFACE_UPDATE_INTERVAL (30) /* sec. How long it usually takes to get an IP lease. */
#define TRANSOP_TICK_INTERVAL (10) /* sec */
/** maximum length of command line arguments */
#define MAX_CMDLINE_BUFFER_LENGTH 4096
/** maximum length of a line in the configuration file */
#define MAX_CONFFILE_LINE_LENGTH 1024
#define N2N_PATHNAME_MAXLEN 256
#define N2N_MAX_TRANSFORMS 16
#define N2N_EDGE_MGMT_PORT 5644
/** Positions in the transop array where various transforms are stored.
*
* Used by transop_enum_to_index(). See also the transform enumerations in
* n2n_transforms.h */
#define N2N_TRANSOP_NULL_IDX 0
#define N2N_TRANSOP_TF_IDX 1
#define N2N_TRANSOP_AESCBC_IDX 2
/* etc. */
/* Work-memory needed for compression. Allocate memory in units
* of `lzo_align_t' (instead of `char') to make sure it is properly aligned.
*/
/* #define HEAP_ALLOC(var,size) \ */
/* lzo_align_t __LZO_MMODEL var [ ((size) + (sizeof(lzo_align_t) - 1)) / sizeof(lzo_align_t) ] */
/* static HEAP_ALLOC(wrkmem,LZO1X_1_MEM_COMPRESS); */
/* ******************************************************* */
#define N2N_EDGE_SN_HOST_SIZE 48
typedef char n2n_sn_name_t[N2N_EDGE_SN_HOST_SIZE];
#define N2N_EDGE_NUM_SUPERNODES 2
#define N2N_EDGE_SUP_ATTEMPTS 3 /* Number of failed attmpts before moving on to next supernode. */
/** Main structure type for edge. */
struct n2n_edge
{
int daemon; /**< Non-zero if edge should detach and run in the background. */
uint8_t re_resolve_supernode_ip;
n2n_sock_t supernode;
size_t sn_idx; /**< Currently active supernode. */
size_t sn_num; /**< Number of supernode addresses defined. */
n2n_sn_name_t sn_ip_array[N2N_EDGE_NUM_SUPERNODES];
int sn_wait; /**< Whether we are waiting for a supernode response. */
n2n_community_t community_name; /**< The community. 16 full octets. */
char keyschedule[N2N_PATHNAME_MAXLEN];
int null_transop; /**< Only allowed if no key sources defined. */
int udp_sock;
int udp_mgmt_sock; /**< socket for status info. */
tuntap_dev device; /**< All about the TUNTAP device */
int dyn_ip_mode; /**< Interface IP address is dynamically allocated, eg. DHCP. */
int allow_routing; /**< Accept packet no to interface address. */
int drop_multicast; /**< Multicast ethernet addresses. */
n2n_trans_op_t transop[N2N_MAX_TRANSFORMS]; /* one for each transform at fixed positions */
size_t tx_transop_idx; /**< The transop to use when encoding. */
struct peer_info * known_peers; /**< Edges we are connected to. */
struct peer_info * pending_peers; /**< Edges we have tried to register with. */
time_t last_register_req; /**< Check if time to re-register with super*/
size_t register_lifetime; /**< Time distance after last_register_req at which to re-register. */
time_t last_p2p; /**< Last time p2p traffic was received. */
time_t last_sup; /**< Last time a packet arrived from supernode. */
size_t sup_attempts; /**< Number of remaining attempts to this supernode. */
n2n_cookie_t last_cookie; /**< Cookie sent in last REGISTER_SUPER. */
time_t start_time; /**< For calculating uptime */
/* Statistics */
size_t tx_p2p;
size_t rx_p2p;
size_t tx_sup;
size_t rx_sup;
};
#define N2N_NETMASK_STR_SIZE 16 /* dotted decimal 12 numbers + 3 dots */
#define N2N_MACNAMSIZ 18 /* AA:BB:CC:DD:EE:FF + NULL*/
#define N2N_IF_MODE_SIZE 16 /* static | dhcp */
#endif