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295 lines
9.1 KiB
295 lines
9.1 KiB
/**
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* (C) 2007-21 - ntop.org and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not see see <http://www.gnu.org/licenses/>
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*
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*/
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#ifndef _N2N_H_
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#define _N2N_H_
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/*
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tunctl -t tun0
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tunctl -t tun1
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ifconfig tun0 1.2.3.4 up
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ifconfig tun1 1.2.3.5 up
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./edge -d tun0 -l 2000 -r 127.0.0.1:3000 -c hello
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./edge -d tun1 -l 3000 -r 127.0.0.1:2000 -c hello
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tunctl -u UID -t tunX
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*/
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#define SN_MANUAL_MAC /* allows supernode MAC address to be set manually */
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#define N2N_HAVE_DAEMON /* needs to be defined before it gets undefined */
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#define N2N_HAVE_TCP /* needs to be defined before it gets undefined */
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/* #define N2N_CAN_NAME_IFACE */
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/* Moved here to define _CRT_SECURE_NO_WARNINGS before all the including takes place */
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#ifdef WIN32
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#ifndef CMAKE_BUILD
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#include "config.h" /* Visual C++ */
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#else
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#include "winconfig.h"
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#endif
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#define N2N_CAN_NAME_IFACE 1
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#undef N2N_HAVE_DAEMON
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#undef N2N_HAVE_TCP /* as explained on https://github.com/ntop/n2n/pull/627#issuecomment-782093706 */
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#undef N2N_HAVE_SETUID
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#else
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#ifndef CMAKE_BUILD
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#include "config.h"
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#endif
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#endif
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#define PACKAGE_BUILDDATE (__DATE__ " " __TIME__)
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#include <time.h>
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#include <ctype.h>
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#include <stdlib.h>
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#ifndef WIN32
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#include <netdb.h>
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#endif
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#ifndef _MSC_VER
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#include <getopt.h>
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#endif /* #ifndef _MSC_VER */
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#include <stdio.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <time.h>
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#ifndef WIN32
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/param.h>
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#include <pthread.h>
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#ifdef __linux__
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#define N2N_CAN_NAME_IFACE 1
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#include <linux/netlink.h>
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#include <linux/rtnetlink.h>
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#include <unistd.h>
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#include <net/if_arp.h>
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#include <net/if.h>
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#include <linux/if_tun.h>
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#include <linux/netlink.h>
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#include <linux/rtnetlink.h>
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#endif /* #ifdef __linux__ */
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#ifdef __FreeBSD__
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#include <netinet/in_systm.h>
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#endif /* #ifdef __FreeBSD__ */
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#include <syslog.h>
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#include <sys/wait.h>
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#ifdef HAVE_ZSTD
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#include <zstd.h>
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#endif
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/udp.h>
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#include <netinet/tcp.h>
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#include <arpa/inet.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <string.h>
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#include <assert.h>
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#include <sys/stat.h>
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#include <stdint.h>
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#if defined (HAVE_OPENSSL_1_1)
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#include <openssl/opensslv.h>
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#include <openssl/crypto.h>
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#endif
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#define closesocket(a) close(a)
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#endif /* #ifndef WIN32 */
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#include "minilzo.h"
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#include <signal.h>
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#include <string.h>
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#include <stdarg.h>
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#include "lzoconf.h"
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#include "uthash.h"
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#include "n2n_define.h"
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#include "n2n_typedefs.h"
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#ifdef WIN32
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#include <winsock2.h> /* for tcp */
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#define SHUT_RDWR SD_BOTH /* for tcp */
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#include "wintap.h"
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#include <sys/stat.h>
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#else
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#include <pwd.h>
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#endif /* #ifdef WIN32 */
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#include "n2n_wire.h"
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#include "random_numbers.h"
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#include "pearson.h"
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#include "portable_endian.h"
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#include "aes.h"
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#include "cc20.h"
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#include "speck.h"
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#include "curve25519.h"
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#include "n2n_regex.h"
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#include "sn_selection.h"
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#include "network_traffic_filter.h"
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#include "auth.h"
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#if defined(HAVE_MINIUPNP) || defined(HAVE_NATPMP)
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#include "n2n_port_mapping.h"
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#endif // HAVE_MINIUPNP || HAVE_NATPMP
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/* ************************************** */
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#include "header_encryption.h"
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#include "tf.h"
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#ifndef TRACE_ERROR
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#define TRACE_ERROR 0, __FILE__, __LINE__
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#define TRACE_WARNING 1, __FILE__, __LINE__
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#define TRACE_NORMAL 2, __FILE__, __LINE__
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#define TRACE_INFO 3, __FILE__, __LINE__
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#define TRACE_DEBUG 4, __FILE__, __LINE__
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#endif
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/* ************************************** */
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/* Transop Init Functions */
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int n2n_transop_null_init (const n2n_edge_conf_t *conf, n2n_trans_op_t *ttt);
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int n2n_transop_tf_init (const n2n_edge_conf_t *conf, n2n_trans_op_t *ttt);
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int n2n_transop_aes_init (const n2n_edge_conf_t *conf, n2n_trans_op_t *ttt);
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int n2n_transop_cc20_init (const n2n_edge_conf_t *conf, n2n_trans_op_t *ttt);
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int n2n_transop_speck_init (const n2n_edge_conf_t *conf, n2n_trans_op_t *ttt);
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int n2n_transop_lzo_init (const n2n_edge_conf_t *conf, n2n_trans_op_t *ttt);
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#ifdef HAVE_ZSTD
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int n2n_transop_zstd_init (const n2n_edge_conf_t *conf, n2n_trans_op_t *ttt);
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#endif
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/* Log */
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void setTraceLevel (int level);
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void setUseSyslog (int use_syslog);
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void setTraceFile (FILE *f);
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int getTraceLevel ();
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void closeTraceFile ();
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void traceEvent (int eventTraceLevel, char* file, int line, char * format, ...);
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/* Tuntap API */
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int tuntap_open (struct tuntap_dev *device, char *dev, const char *address_mode, char *device_ip,
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char *device_mask, const char * device_mac, int mtu
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#ifdef WIN32
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, int metric
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#endif
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);
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int tuntap_read (struct tuntap_dev *tuntap, unsigned char *buf, int len);
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int tuntap_write (struct tuntap_dev *tuntap, unsigned char *buf, int len);
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void tuntap_close (struct tuntap_dev *tuntap);
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void tuntap_get_address (struct tuntap_dev *tuntap);
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/* Utils */
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char* intoa (uint32_t addr, char* buf, uint16_t buf_len);
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uint32_t bitlen2mask (uint8_t bitlen);
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uint8_t mask2bitlen (uint32_t mask);
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char* macaddr_str (macstr_t buf, const n2n_mac_t mac);
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int str2mac (uint8_t * outmac /* 6 bytes */, const char * s);
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int supernode2sock (n2n_sock_t * sn, const n2n_sn_name_t addrIn);
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uint8_t is_multi_broadcast (const n2n_mac_t dest_mac);
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uint8_t is_broadcast (const n2n_mac_t dest_mac);
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uint8_t is_null_mac (const n2n_mac_t dest_mac);
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char* msg_type2str (uint16_t msg_type);
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void hexdump (const uint8_t * buf, size_t len);
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void print_n2n_version ();
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int is_empty_ip_address (const n2n_sock_t * sock);
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void print_edge_stats (const n2n_edge_t *eee);
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int memrnd (uint8_t *address, size_t len);
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int memxor (uint8_t *destination, const uint8_t *source, size_t len);
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/* Sockets */
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char* sock_to_cstr (n2n_sock_str_t out,
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const n2n_sock_t * sock);
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char * ip_subnet_to_str (dec_ip_bit_str_t buf, const n2n_ip_subnet_t *ipaddr);
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SOCKET open_socket (int local_port, in_addr_t address, int type);
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int sock_equal (const n2n_sock_t * a,
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const n2n_sock_t * b);
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/* Header encryption */
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uint64_t time_stamp (void);
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uint64_t initial_time_stamp (void);
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int time_stamp_verify_and_update (uint64_t stamp, uint64_t * previous_stamp, int allow_jitter);
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/* Operations on peer_info lists. */
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size_t purge_peer_list (struct peer_info ** peer_list,
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SOCKET socket_not_to_close,
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n2n_tcp_connection_t **tcp_connections,
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time_t purge_before);
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size_t clear_peer_list (struct peer_info ** peer_list);
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size_t purge_expired_nodes (struct peer_info **peer_list,
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SOCKET socket_not_to_close,
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n2n_tcp_connection_t **tcp_connections,
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time_t *p_last_purge,
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int frequency, int timeout);
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/* Edge conf */
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void edge_init_conf_defaults (n2n_edge_conf_t *conf);
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int edge_verify_conf (const n2n_edge_conf_t *conf);
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int edge_conf_add_supernode (n2n_edge_conf_t *conf, const char *ip_and_port);
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const n2n_edge_conf_t* edge_get_conf (const n2n_edge_t *eee);
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void edge_term_conf (n2n_edge_conf_t *conf);
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/* Public functions */
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n2n_edge_t* edge_init (const n2n_edge_conf_t *conf, int *rv);
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void update_supernode_reg (n2n_edge_t * eee, time_t nowTime);
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void readFromIPSocket (n2n_edge_t * eee, int in_sock);
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void edge_term (n2n_edge_t *eee);
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void edge_set_callbacks (n2n_edge_t *eee, const n2n_edge_callbacks_t *callbacks);
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void edge_set_userdata (n2n_edge_t *eee, void *user_data);
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void* edge_get_userdata (n2n_edge_t *eee);
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void edge_send_packet2net (n2n_edge_t *eee, uint8_t *tap_pkt, size_t len);
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void edge_read_from_tap (n2n_edge_t *eee);
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int edge_get_n2n_socket (n2n_edge_t *eee);
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int edge_get_management_socket (n2n_edge_t *eee);
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int run_edge_loop (n2n_edge_t *eee);
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int quick_edge_init (char *device_name, char *community_name,
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char *encrypt_key, char *device_mac,
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char *local_ip_address,
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char *supernode_ip_address_port,
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int *keep_on_running);
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int comm_init (struct sn_community *comm, char *cmn);
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int sn_init_defaults (n2n_sn_t *sss);
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void sn_init (n2n_sn_t *sss);
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void sn_term (n2n_sn_t *sss);
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int supernode2sock (n2n_sock_t * sn, const n2n_sn_name_t addrIn);
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struct peer_info* add_sn_to_list_by_mac_or_sock (struct peer_info **sn_list, n2n_sock_t *sock, const n2n_mac_t mac, int *skip_add);
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int run_sn_loop (n2n_sn_t *sss);
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int assign_one_ip_subnet (n2n_sn_t *sss, struct sn_community *comm);
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const char* compression_str (uint8_t cmpr);
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const char* transop_str (enum n2n_transform tr);
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void readFromMgmtSocket (n2n_edge_t *eee);
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void mgmt_event_post (enum n2n_event_topic topic, int data0, void *data1);
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#endif /* _N2N_H_ */
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