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udp2raw
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fix indent with clang-format

This commit is contained in:
yancey 2023-02-07 07:11:49 -05:00
parent 87b0db8862
commit 9217e0e9e6
21 changed files with 7584 additions and 8903 deletions
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1638
client.cpp
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1974
common.cpp
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650
common.h
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@ -10,16 +10,16 @@
#define __STDC_FORMAT_MACROS 1
#include <inttypes.h>
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<getopt.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <getopt.h>
#include<unistd.h>
#include<errno.h>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
#include <stdlib.h> //for exit(0);
#include <errno.h> //For errno - the error number
#include <stdlib.h> //for exit(0);
#include <errno.h> //For errno - the error number
#include <fcntl.h>
#include <sys/time.h>
#include <time.h>
@ -32,7 +32,7 @@
#endif
#if defined(UDP2RAW_MP)
const int is_udp2raw_mp=1;
const int is_udp2raw_mp = 1;
#if !defined(__CYGWIN__) && !defined(__MINGW32__)
#include <pcap.h>
#else
@ -44,10 +44,9 @@ const int is_udp2raw_mp=1;
#include <libnet.h>
#endif
#else
#define UDP2RAW_LINUX
const int is_udp2raw_mp=0;
const int is_udp2raw_mp = 0;
//#include <linux/if_ether.h>
#include <linux/filter.h>
#include <linux/if_packet.h>
@ -80,51 +79,47 @@ typedef int socklen_t;
#include <netinet/in.h>
#endif
#include<unordered_map>
#include <unordered_map>
#include <fstream>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <list>
using namespace std;
using namespace std;
#if defined(__BYTE_ORDER) && __BYTE_ORDER == __BIG_ENDIAN || \
#if defined(__BYTE_ORDER) && __BYTE_ORDER == __BIG_ENDIAN || \
defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ || \
defined(__BIG_ENDIAN__) || \
defined(__ARMEB__) || \
defined(__THUMBEB__) || \
defined(__AARCH64EB__) || \
defined(__BIG_ENDIAN__) || \
defined(__ARMEB__) || \
defined(__THUMBEB__) || \
defined(__AARCH64EB__) || \
defined(_MIBSEB) || defined(__MIBSEB) || defined(__MIBSEB__)
#define UDP2RAW_BIG_ENDIAN 1
#endif
#if defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN || \
#if defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN || \
defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ || \
defined(__LITTLE_ENDIAN__) || \
defined(__ARMEL__) || \
defined(__THUMBEL__) || \
defined(__AARCH64EL__) || \
defined(__LITTLE_ENDIAN__) || \
defined(__ARMEL__) || \
defined(__THUMBEL__) || \
defined(__AARCH64EL__) || \
defined(_MIPSEL) || defined(__MIPSEL) || defined(__MIPSEL__)
#define UDP2RAW_LITTLE_ENDIAN 1
#endif
#if defined(UDP2RAW_BIG_ENDIAN) &&defined(UDP2RAW_LITTLE_ENDIAN)
#if defined(UDP2RAW_BIG_ENDIAN) && defined(UDP2RAW_LITTLE_ENDIAN)
#error "endian detection conflicts"
#endif
#if !defined(UDP2RAW_BIG_ENDIAN) && !defined(UDP2RAW_LITTLE_ENDIAN)
#error "endian detection failed"
#endif
#if defined(__MINGW32__)
int inet_pton(int af, const char *src, void *dst);
const char *inet_ntop(int af, const void *src, char *dst, socklen_t size);
#define setsockopt(a,b,c,d,e) setsockopt(a,b,c,(const char *)(d),e)
#define setsockopt(a, b, c, d, e) setsockopt(a, b, c, (const char *)(d), e)
#endif
char *get_sock_error();
@ -132,21 +127,18 @@ int get_sock_errno();
#if defined(__MINGW32__)
typedef SOCKET my_fd_t;
inline int sock_close(my_fd_t fd)
{
return closesocket(fd);
inline int sock_close(my_fd_t fd) {
return closesocket(fd);
}
#else
typedef int my_fd_t;
inline int sock_close(my_fd_t fd)
{
return close(fd);
inline int sock_close(my_fd_t fd) {
return close(fd);
}
#endif
typedef unsigned long long u64_t; //this works on most platform,avoid using the PRId64
typedef unsigned long long u64_t; // this works on most platform,avoid using the PRId64
typedef long long i64_t;
typedef unsigned int u32_t;
@ -165,7 +157,7 @@ typedef u64_t anti_replay_seq_t;
typedef u64_t my_time_t;
const int max_addr_len=100;
const int max_addr_len = 100;
extern int force_socket_buf;
@ -174,251 +166,224 @@ extern int g_fix_gro;
/*
struct ip_port_t
{
u32_t ip;
int port;
void from_u64(u64_t u64);
u64_t to_u64();
char * to_s();
u32_t ip;
int port;
void from_u64(u64_t u64);
u64_t to_u64();
char * to_s();
};*/
typedef u64_t fd64_t;
u32_t djb2(unsigned char *str,int len);
u32_t sdbm(unsigned char *str,int len);
u32_t djb2(unsigned char *str, int len);
u32_t sdbm(unsigned char *str, int len);
struct address_t //TODO scope id
struct address_t // TODO scope id
{
struct hash_function
{
u32_t operator()(const address_t &key) const
{
return sdbm((unsigned char*)&key.inner,sizeof(key.inner));
}
};
struct hash_function {
u32_t operator()(const address_t &key) const {
return sdbm((unsigned char *)&key.inner, sizeof(key.inner));
}
};
union storage_t //sockaddr_storage is too huge, we dont use it.
{
sockaddr_in ipv4;
sockaddr_in6 ipv6;
};
storage_t inner;
address_t()
{
clear();
}
void clear()
{
memset(&inner,0,sizeof(inner));
}
int from_ip_port(u32_t ip, int port)
{
clear();
inner.ipv4.sin_family=AF_INET;
inner.ipv4.sin_port=htons(port);
inner.ipv4.sin_addr.s_addr=ip;
return 0;
}
int from_ip_port_new(int type, void * ip, int port)
{
clear();
if(type==AF_INET)
{
inner.ipv4.sin_family=AF_INET;
inner.ipv4.sin_port=htons(port);
inner.ipv4.sin_addr.s_addr=*((u32_t *)ip);
}
else if(type==AF_INET6)
{
inner.ipv6.sin6_family=AF_INET6;
inner.ipv6.sin6_port=htons(port);
inner.ipv6.sin6_addr=*((in6_addr*)ip);
}
return 0;
}
int from_str(char * str);
int from_str_ip_only(char * str);
int from_sockaddr(sockaddr *,socklen_t);
char* get_str();
void to_str(char *);
inline u32_t get_type()
{
u32_t ret=((sockaddr*)&inner)->sa_family;
assert(ret==AF_INET||ret==AF_INET6);
return ret;
}
inline u32_t get_len()
{
u32_t type=get_type();
switch(type)
{
case AF_INET:
return sizeof(sockaddr_in);
case AF_INET6:
return sizeof(sockaddr_in6);
default:
assert(0==1);
}
return -1;
}
inline u32_t get_port()
{
u32_t type=get_type();
switch(type)
{
case AF_INET:
return ntohs(inner.ipv4.sin_port);
case AF_INET6:
return ntohs(inner.ipv6.sin6_port);
default:
assert(0==1);
}
return -1;
}
inline void set_port(int port)
{
u32_t type=get_type();
switch(type)
{
case AF_INET:
inner.ipv4.sin_port=htons(port);
break;
case AF_INET6:
inner.ipv6.sin6_port=htons(port);
break;
default:
assert(0==1);
}
return ;
}
bool operator == (const address_t &b) const
union storage_t // sockaddr_storage is too huge, we dont use it.
{
//return this->data==b.data;
return memcmp(&this->inner,&b.inner,sizeof(this->inner))==0;
sockaddr_in ipv4;
sockaddr_in6 ipv6;
};
storage_t inner;
address_t() {
clear();
}
void clear() {
memset(&inner, 0, sizeof(inner));
}
int from_ip_port(u32_t ip, int port) {
clear();
inner.ipv4.sin_family = AF_INET;
inner.ipv4.sin_port = htons(port);
inner.ipv4.sin_addr.s_addr = ip;
return 0;
}
int from_ip_port_new(int type, void *ip, int port) {
clear();
if (type == AF_INET) {
inner.ipv4.sin_family = AF_INET;
inner.ipv4.sin_port = htons(port);
inner.ipv4.sin_addr.s_addr = *((u32_t *)ip);
} else if (type == AF_INET6) {
inner.ipv6.sin6_family = AF_INET6;
inner.ipv6.sin6_port = htons(port);
inner.ipv6.sin6_addr = *((in6_addr *)ip);
}
return 0;
}
int from_str(char *str);
int from_str_ip_only(char *str);
int from_sockaddr(sockaddr *, socklen_t);
char *get_str();
void to_str(char *);
inline u32_t get_type() {
u32_t ret = ((sockaddr *)&inner)->sa_family;
assert(ret == AF_INET || ret == AF_INET6);
return ret;
}
inline u32_t get_len() {
u32_t type = get_type();
switch (type) {
case AF_INET:
return sizeof(sockaddr_in);
case AF_INET6:
return sizeof(sockaddr_in6);
default:
assert(0 == 1);
}
return -1;
}
inline u32_t get_port() {
u32_t type = get_type();
switch (type) {
case AF_INET:
return ntohs(inner.ipv4.sin_port);
case AF_INET6:
return ntohs(inner.ipv6.sin6_port);
default:
assert(0 == 1);
}
return -1;
}
inline void set_port(int port) {
u32_t type = get_type();
switch (type) {
case AF_INET:
inner.ipv4.sin_port = htons(port);
break;
case AF_INET6:
inner.ipv6.sin6_port = htons(port);
break;
default:
assert(0 == 1);
}
return;
}
bool operator==(const address_t &b) const {
// return this->data==b.data;
return memcmp(&this->inner, &b.inner, sizeof(this->inner)) == 0;
}
int new_connected_udp_fd();
char* get_ip();
char *get_ip();
};
namespace std {
template <>
struct hash<address_t>
{
std::size_t operator()(const address_t& key) const
{
struct hash<address_t> {
std::size_t operator()(const address_t &key) const {
// return address_t::hash_function(k);
return sdbm((unsigned char *)&key.inner, sizeof(key.inner));
}
};
} // namespace std
//return address_t::hash_function(k);
return sdbm((unsigned char*)&key.inner,sizeof(key.inner));
}
};
}
union my_ip_t //just a simple version of address_t,stores ip only
union my_ip_t // just a simple version of address_t,stores ip only
{
u32_t v4;
in6_addr v6;
u32_t v4;
in6_addr v6;
bool equal (const my_ip_t &b) const;
bool equal(const my_ip_t &b) const;
//int from_str(char * str);
char * get_str1() const;
char * get_str2() const;
// int from_str(char * str);
char *get_str1() const;
char *get_str2() const;
int from_address_t(address_t a);
};
struct not_copy_able_t
{
not_copy_able_t()
{
}
not_copy_able_t(const not_copy_able_t &other)
{
assert(0==1);
}
const not_copy_able_t & operator=(const not_copy_able_t &other)
{
assert(0==1);
return other;
}
struct not_copy_able_t {
not_copy_able_t() {
}
not_copy_able_t(const not_copy_able_t &other) {
assert(0 == 1);
}
const not_copy_able_t &operator=(const not_copy_able_t &other) {
assert(0 == 1);
return other;
}
};
const int huge_data_len=65535+100; //a packet with link level header might be larger than 65535
const int huge_buf_len=huge_data_len+100;
const int huge_data_len = 65535 + 100; // a packet with link level header might be larger than 65535
const int huge_buf_len = huge_data_len + 100;
const int max_data_len=1800;
const int buf_len=max_data_len+400;
const int max_data_len = 1800;
const int buf_len = max_data_len + 400;
//const int max_address_len=512;
// const int max_address_len=512;
#ifdef UDP2RAW_MP
const int queue_len=200;
const int queue_len = 200;
struct queue_t
{
char data[queue_len][huge_buf_len];
int data_len[queue_len];
struct queue_t {
char data[queue_len][huge_buf_len];
int data_len[queue_len];
int head=0;
int tail=0;
void clear()
{
head=tail=0;
}
int empty()
{
if(head==tail) return 1;
else return 0;
}
int full()
{
if( (tail+1)%queue_len==head ) return 1;
else return 0;
}
void peek_front(char * & p,int &len)
{
assert(!empty());
p=data[head];
len=data_len[head];
}
void pop_front()
{
assert(!empty());
head++;head%=queue_len;
}
void push_back(char * p,int len)
{
assert(!full());
memcpy(data[tail],p,len);
data_len[tail]=len;
tail++;tail%=queue_len;
}
int head = 0;
int tail = 0;
void clear() {
head = tail = 0;
}
int empty() {
if (head == tail)
return 1;
else
return 0;
}
int full() {
if ((tail + 1) % queue_len == head)
return 1;
else
return 0;
}
void peek_front(char *&p, int &len) {
assert(!empty());
p = data[head];
len = data_len[head];
}
void pop_front() {
assert(!empty());
head++;
head %= queue_len;
}
void push_back(char *p, int len) {
assert(!full());
memcpy(data[tail], p, len);
data_len[tail] = len;
tail++;
tail %= queue_len;
}
};
int init_ws();
#endif
u64_t get_current_time();
u64_t pack_u64(u32_t a,u32_t b);
u64_t pack_u64(u32_t a, u32_t b);
u32_t get_u64_h(u64_t a);
u32_t get_u64_l(u64_t a);
char * my_ntoa(u32_t ip);
char *my_ntoa(u32_t ip);
void init_random_number_fd();
u64_t get_true_random_number_64();
@ -427,138 +392,131 @@ u32_t get_true_random_number_nz();
u64_t ntoh64(u64_t a);
u64_t hton64(u64_t a);
void write_u16(char *,u16_t a);// network order
void write_u16(char *, u16_t a); // network order
u16_t read_u16(char *);
void write_u32(char *,u32_t a);// network order
void write_u32(char *, u32_t a); // network order
u32_t read_u32(char *);
void write_u64(char *,u64_t a);
void write_u64(char *, u64_t a);
u64_t read_u64(char *);
bool larger_than_u16(uint16_t a,uint16_t b);
bool larger_than_u32(u32_t a,u32_t b);
bool larger_than_u16(uint16_t a, uint16_t b);
bool larger_than_u32(u32_t a, u32_t b);
void setnonblocking(int sock);
int set_buf_size(int fd,int socket_buf_size);
int set_buf_size(int fd, int socket_buf_size);
void myexit(int a);
unsigned short csum(const unsigned short *ptr,int nbytes);
unsigned short csum_with_header(char* header,int hlen,const unsigned short *ptr,int nbytes);
unsigned short csum(const unsigned short *ptr, int nbytes);
unsigned short csum_with_header(char *header, int hlen, const unsigned short *ptr, int nbytes);
int numbers_to_char(my_id_t id1,my_id_t id2,my_id_t id3,char * &data,int &len);
int char_to_numbers(const char * data,int len,my_id_t &id1,my_id_t &id2,my_id_t &id3);
int numbers_to_char(my_id_t id1, my_id_t id2, my_id_t id3, char *&data, int &len);
int char_to_numbers(const char *data, int len, my_id_t &id1, my_id_t &id2, my_id_t &id3);
const int show_none=0;
const int show_command=0x1;
const int show_log=0x2;
const int show_all=show_command|show_log;
const int show_none = 0;
const int show_command = 0x1;
const int show_log = 0x2;
const int show_all = show_command | show_log;
int run_command(string command,char * &output,int flag=show_all);
//int run_command_no_log(string command,char * &output);
int read_file(const char * file,string &output);
int run_command(string command, char *&output, int flag = show_all);
// int run_command_no_log(string command,char * &output);
int read_file(const char *file, string &output);
vector<string> string_to_vec(const char * s,const char * sp);
vector< vector <string> > string_to_vec2(const char * s);
vector<string> string_to_vec(const char *s, const char *sp);
vector<vector<string> > string_to_vec2(const char *s);
string trim(const string& str, char c);
string trim(const string &str, char c);
string trim_conf_line(const string& str);
string trim_conf_line(const string &str);
vector<string> parse_conf_line(const string& s);
vector<string> parse_conf_line(const string &s);
int hex_to_u32_with_endian(const string & a,u32_t &output);
int hex_to_u32(const string & a,u32_t &output);
//extern string iptables_pattern;
int hex_to_u32_with_endian(const string &a, u32_t &output);
int hex_to_u32(const string &a, u32_t &output);
// extern string iptables_pattern;
int create_fifo(char * file);
int create_fifo(char *file);
void print_binary_chars(const char * a,int len);
void print_binary_chars(const char *a, int len);
template <class key_t>
struct lru_collector_t:not_copy_able_t
{
//typedef void* key_t;
//#define key_t void*
struct lru_pair_t
{
key_t key;
my_time_t ts;
};
struct lru_collector_t : not_copy_able_t {
// typedef void* key_t;
//#define key_t void*
struct lru_pair_t {
key_t key;
my_time_t ts;
};
unordered_map<key_t,typename list<lru_pair_t>::iterator> mp;
unordered_map<key_t, typename list<lru_pair_t>::iterator> mp;
list<lru_pair_t> q;
int update(key_t key)
{
assert(mp.find(key)!=mp.end());
auto it=mp[key];
q.erase(it);
list<lru_pair_t> q;
int update(key_t key) {
assert(mp.find(key) != mp.end());
auto it = mp[key];
q.erase(it);
my_time_t value=get_current_time();
if(!q.empty())
{
assert(value >=q.front().ts);
}
lru_pair_t tmp; tmp.key=key; tmp.ts=value;
q.push_front( tmp);
mp[key]=q.begin();
my_time_t value = get_current_time();
if (!q.empty()) {
assert(value >= q.front().ts);
}
lru_pair_t tmp;
tmp.key = key;
tmp.ts = value;
q.push_front(tmp);
mp[key] = q.begin();
return 0;
}
int new_key(key_t key)
{
assert(mp.find(key)==mp.end());
return 0;
}
int new_key(key_t key) {
assert(mp.find(key) == mp.end());
my_time_t value=get_current_time();
if(!q.empty())
{
assert(value >=q.front().ts);
}
lru_pair_t tmp; tmp.key=key; tmp.ts=value;
q.push_front( tmp);
mp[key]=q.begin();
my_time_t value = get_current_time();
if (!q.empty()) {
assert(value >= q.front().ts);
}
lru_pair_t tmp;
tmp.key = key;
tmp.ts = value;
q.push_front(tmp);
mp[key] = q.begin();
return 0;
}
int size()
{
return q.size();
}
int empty()
{
return q.empty();
}
void clear()
{
mp.clear(); q.clear();
}
my_time_t ts_of(key_t key)
{
assert(mp.find(key)!=mp.end());
return mp[key]->ts;
}
return 0;
}
int size() {
return q.size();
}
int empty() {
return q.empty();
}
void clear() {
mp.clear();
q.clear();
}
my_time_t ts_of(key_t key) {
assert(mp.find(key) != mp.end());
return mp[key]->ts;
}
my_time_t peek_back(key_t &key)
{
assert(!q.empty());
auto it=q.end(); it--;
key=it->key;
return it->ts;
}
void erase(key_t key)
{
assert(mp.find(key)!=mp.end());
q.erase(mp[key]);
mp.erase(key);
}
/*
void erase_back()
{
assert(!q.empty());
auto it=q.end(); it--;
key_t key=it->key;
erase(key);
}*/
my_time_t peek_back(key_t &key) {
assert(!q.empty());
auto it = q.end();
it--;
key = it->key;
return it->ts;
}
void erase(key_t key) {
assert(mp.find(key) != mp.end());
q.erase(mp[key]);
mp.erase(key);
}
/*
void erase_back()
{
assert(!q.empty());
auto it=q.end(); it--;
key_t key=it->key;
erase(key);
}*/
};
#endif /* COMMON_H_ */

1208
connection.cpp
View File

File diff suppressed because it is too large Load Diff

510
connection.h
View File

@ -16,336 +16,298 @@ extern int disable_anti_replay;
#include "network.h"
#include "misc.h"
const int disable_conv_clear=0;//a udp connection in the multiplexer is called conversation in this program,conv for short.
const int disable_conv_clear = 0; // a udp connection in the multiplexer is called conversation in this program,conv for short.
struct anti_replay_t //its for anti replay attack,similar to openvpn/ipsec 's anti replay window
struct anti_replay_t // its for anti replay attack,similar to openvpn/ipsec 's anti replay window
{
u64_t max_packet_received;
char window[anti_replay_window_size];
anti_replay_seq_t anti_replay_seq;
anti_replay_seq_t get_new_seq_for_send();
anti_replay_t();
void re_init();
u64_t max_packet_received;
char window[anti_replay_window_size];
anti_replay_seq_t anti_replay_seq;
anti_replay_seq_t get_new_seq_for_send();
anti_replay_t();
void re_init();
int is_vaild(u64_t seq);
};//anti_replay;
int is_vaild(u64_t seq);
}; // anti_replay;
void server_clear_function(u64_t u64);
#include <type_traits>
template <class T>
template <class T>
struct conv_manager_t // manage the udp connections
{
//typedef hash_map map;
unordered_map<T,u32_t> data_to_conv; //conv and u64 are both supposed to be uniq
unordered_map<u32_t,T> conv_to_data;
// typedef hash_map map;
unordered_map<T, u32_t> data_to_conv; // conv and u64 are both supposed to be uniq
unordered_map<u32_t, T> conv_to_data;
lru_collector_t<u32_t> lru;
//unordered_map<u32_t,u64_t> conv_last_active_time;
lru_collector_t<u32_t> lru;
// unordered_map<u32_t,u64_t> conv_last_active_time;
//unordered_map<u32_t,u64_t>::iterator clear_it;
// unordered_map<u32_t,u64_t>::iterator clear_it;
void (*additional_clear_function)(T data) =0;
void (*additional_clear_function)(T data) = 0;
long long last_clear_time;
long long last_clear_time;
conv_manager_t()
{
//clear_it=conv_last_active_time.begin();
long long last_clear_time=0;
additional_clear_function=0;
}
~conv_manager_t()
{
clear();
}
int get_size()
{
return conv_to_data.size();
}
void reserve()
{
data_to_conv.reserve(10007);
conv_to_data.reserve(10007);
//conv_last_active_time.reserve(10007);
conv_manager_t() {
// clear_it=conv_last_active_time.begin();
long long last_clear_time = 0;
additional_clear_function = 0;
}
~conv_manager_t() {
clear();
}
int get_size() {
return conv_to_data.size();
}
void reserve() {
data_to_conv.reserve(10007);
conv_to_data.reserve(10007);
// conv_last_active_time.reserve(10007);
lru.mp.reserve(10007);
}
void clear()
{
if(disable_conv_clear) return ;
lru.mp.reserve(10007);
}
void clear() {
if (disable_conv_clear) return;
if(additional_clear_function!=0)
{
for(auto it=conv_to_data.begin();it!=conv_to_data.end();it++)
{
//int fd=int((it->second<<32u)>>32u);
additional_clear_function( it->second);
}
}
data_to_conv.clear();
conv_to_data.clear();
if (additional_clear_function != 0) {
for (auto it = conv_to_data.begin(); it != conv_to_data.end(); it++) {
// int fd=int((it->second<<32u)>>32u);
additional_clear_function(it->second);
}
}
data_to_conv.clear();
conv_to_data.clear();
lru.clear();
//conv_last_active_time.clear();
lru.clear();
// conv_last_active_time.clear();
//clear_it=conv_last_active_time.begin();
// clear_it=conv_last_active_time.begin();
}
u32_t get_new_conv() {
u32_t conv = get_true_random_number_nz();
while (conv_to_data.find(conv) != conv_to_data.end()) {
conv = get_true_random_number_nz();
}
return conv;
}
int is_conv_used(u32_t conv) {
return conv_to_data.find(conv) != conv_to_data.end();
}
int is_data_used(T data) {
return data_to_conv.find(data) != data_to_conv.end();
}
u32_t find_conv_by_data(T data) {
return data_to_conv[data];
}
T find_data_by_conv(u32_t conv) {
return conv_to_data[conv];
}
int update_active_time(u32_t conv) {
// return conv_last_active_time[conv]=get_current_time();
lru.update(conv);
return 0;
}
int insert_conv(u32_t conv, T data) {
data_to_conv[data] = conv;
conv_to_data[conv] = data;
// conv_last_active_time[conv]=get_current_time();
lru.new_key(conv);
return 0;
}
int erase_conv(u32_t conv) {
if (disable_conv_clear) return 0;
T data = conv_to_data[conv];
if (additional_clear_function != 0) {
additional_clear_function(data);
}
conv_to_data.erase(conv);
data_to_conv.erase(data);
// conv_last_active_time.erase(conv);
lru.erase(conv);
return 0;
}
int clear_inactive(char *info = 0) {
if (get_current_time() - last_clear_time > conv_clear_interval) {
last_clear_time = get_current_time();
return clear_inactive0(info);
}
return 0;
}
int clear_inactive0(char *info) {
if (disable_conv_clear) return 0;
}
u32_t get_new_conv()
{
u32_t conv=get_true_random_number_nz();
while(conv_to_data.find(conv)!=conv_to_data.end())
{
conv=get_true_random_number_nz();
}
return conv;
}
int is_conv_used(u32_t conv)
{
return conv_to_data.find(conv)!=conv_to_data.end();
}
int is_data_used(T data)
{
return data_to_conv.find(data)!=data_to_conv.end();
}
u32_t find_conv_by_data(T data)
{
return data_to_conv[data];
}
T find_data_by_conv(u32_t conv)
{
return conv_to_data[conv];
}
int update_active_time(u32_t conv)
{
//return conv_last_active_time[conv]=get_current_time();
lru.update(conv);
return 0;
}
int insert_conv(u32_t conv,T data)
{
data_to_conv[data]=conv;
conv_to_data[conv]=data;
//conv_last_active_time[conv]=get_current_time();
lru.new_key(conv);
return 0;
}
int erase_conv(u32_t conv)
{
if(disable_conv_clear) return 0;
T data=conv_to_data[conv];
if(additional_clear_function!=0)
{
additional_clear_function(data);
}
conv_to_data.erase(conv);
data_to_conv.erase(data);
//conv_last_active_time.erase(conv);
lru.erase(conv);
return 0;
}
int clear_inactive(char * info=0)
{
if(get_current_time()-last_clear_time>conv_clear_interval)
{
last_clear_time=get_current_time();
return clear_inactive0(info);
}
return 0;
}
int clear_inactive0(char * info)
{
if(disable_conv_clear) return 0;
unordered_map<u32_t, u64_t>::iterator it;
unordered_map<u32_t, u64_t>::iterator old_it;
// map<uint32_t,uint64_t>::iterator it;
int cnt = 0;
// it=clear_it;
int size = lru.size();
int num_to_clean = size / conv_clear_ratio + conv_clear_min; // clear 1/10 each time,to avoid latency glitch
unordered_map<u32_t,u64_t>::iterator it;
unordered_map<u32_t,u64_t>::iterator old_it;
num_to_clean = min(num_to_clean, size);
//map<uint32_t,uint64_t>::iterator it;
int cnt=0;
//it=clear_it;
int size=lru.size();
int num_to_clean=size/conv_clear_ratio+conv_clear_min; //clear 1/10 each time,to avoid latency glitch
my_time_t current_time = get_current_time();
for (;;) {
if (cnt >= num_to_clean) break;
if (lru.empty()) break;
num_to_clean=min(num_to_clean,size);
u32_t conv;
my_time_t ts = lru.peek_back(conv);
my_time_t current_time=get_current_time();
for(;;)
{
if(cnt>=num_to_clean) break;
if(lru.empty()) break;
if (current_time - ts < conv_timeout) break;
u32_t conv;
my_time_t ts=lru.peek_back(conv);
erase_conv(conv);
if (info == 0) {
mylog(log_info, "conv %x cleared\n", conv);
} else {
mylog(log_info, "[%s]conv %x cleared\n", info, conv);
}
cnt++;
}
return 0;
}
if(current_time- ts < conv_timeout) break;
/*
conv_manager_t();
~conv_manager_t();
int get_size();
void reserve();
void clear();
u32_t get_new_conv();
int is_conv_used(u32_t conv);
int is_u64_used(T u64);
u32_t find_conv_by_u64(T u64);
T find_u64_by_conv(u32_t conv);
int update_active_time(u32_t conv);
int insert_conv(u32_t conv,T u64);
int erase_conv(u32_t conv);
int clear_inactive(char * ip_port=0);
int clear_inactive0(char * ip_port);*/
}; // g_conv_manager;
erase_conv(conv);
if(info==0)
{
mylog(log_info,"conv %x cleared\n",conv);
}
else
{
mylog(log_info,"[%s]conv %x cleared\n",info,conv);
}
cnt++;
}
return 0;
}
/*
conv_manager_t();
~conv_manager_t();
int get_size();
void reserve();
void clear();
u32_t get_new_conv();
int is_conv_used(u32_t conv);
int is_u64_used(T u64);
u32_t find_conv_by_u64(T u64);
T find_u64_by_conv(u32_t conv);
int update_active_time(u32_t conv);
int insert_conv(u32_t conv,T u64);
int erase_conv(u32_t conv);
int clear_inactive(char * ip_port=0);
int clear_inactive0(char * ip_port);*/
};//g_conv_manager;
struct blob_t:not_copy_able_t //used in conn_info_t.
struct blob_t : not_copy_able_t // used in conn_info_t.
{
union tmp_union_t//conv_manager_t is here to avoid copying when a connection is recovered
{
conv_manager_t<address_t> c;
conv_manager_t<u64_t> s;
//avoid templates here and there, avoid pointer and type cast
tmp_union_t()
{
if(program_mode==client_mode)
{
new( &c ) conv_manager_t<address_t>();
}
else
{
assert(program_mode==server_mode);
new( &s ) conv_manager_t<u64_t>();
}
}
~tmp_union_t()
{
if(program_mode==client_mode)
{
c.~conv_manager_t<address_t>();
}
else
{
assert(program_mode==server_mode);
s.~conv_manager_t<u64_t>();
}
}
}conv_manager;
union tmp_union_t // conv_manager_t is here to avoid copying when a connection is recovered
{
conv_manager_t<address_t> c;
conv_manager_t<u64_t> s;
// avoid templates here and there, avoid pointer and type cast
tmp_union_t() {
if (program_mode == client_mode) {
new (&c) conv_manager_t<address_t>();
} else {
assert(program_mode == server_mode);
new (&s) conv_manager_t<u64_t>();
}
}
~tmp_union_t() {
if (program_mode == client_mode) {
c.~conv_manager_t<address_t>();
} else {
assert(program_mode == server_mode);
s.~conv_manager_t<u64_t>();
}
}
} conv_manager;
anti_replay_t anti_replay;//anti_replay_t is here bc its huge,its allocation is delayed.
anti_replay_t anti_replay; // anti_replay_t is here bc its huge,its allocation is delayed.
};
struct conn_info_t //stores info for a raw connection.for client ,there is only one connection,for server there can be thousand of connection since server can
//handle multiple clients
struct conn_info_t // stores info for a raw connection.for client ,there is only one connection,for server there can be thousand of connection since server can
// handle multiple clients
{
current_state_t state;
current_state_t state;
raw_info_t raw_info;
u64_t last_state_time;
u64_t last_hb_sent_time; //client re-use this for retry
u64_t last_hb_recv_time;
//long long last_resent_time;
raw_info_t raw_info;
u64_t last_state_time;
u64_t last_hb_sent_time; // client re-use this for retry
u64_t last_hb_recv_time;
// long long last_resent_time;
my_id_t my_id;
my_id_t oppsite_id;
my_id_t my_id;
my_id_t oppsite_id;
fd64_t timer_fd64;
fd64_t udp_fd64;
fd64_t timer_fd64;
fd64_t udp_fd64;
my_id_t oppsite_const_id;
my_id_t oppsite_const_id;
blob_t *blob;
blob_t *blob;
uint8_t my_roller;
uint8_t oppsite_roller;
u64_t last_oppsite_roller_time;
uint8_t my_roller;
uint8_t oppsite_roller;
u64_t last_oppsite_roller_time;
// ip_port_t ip_port;
// ip_port_t ip_port;
/*
const uint32_t &ip=raw_info.recv_info.src_ip;
const uint16_t &port=raw_info.recv_info.src_port;
/*
const uint32_t &ip=raw_info.recv_info.src_ip;
const uint16_t &port=raw_info.recv_info.src_port;
*/
void recover(const conn_info_t &conn_info);
void re_init();
conn_info_t();
void prepare();
conn_info_t(const conn_info_t &b);
conn_info_t &operator=(const conn_info_t &b);
~conn_info_t();
}; // g_conn_info;
*/
void recover(const conn_info_t &conn_info);
void re_init();
conn_info_t();
void prepare();
conn_info_t(const conn_info_t&b);
conn_info_t& operator=(const conn_info_t& b);
~conn_info_t();
};//g_conn_info;
struct conn_manager_t //manager for connections. for client,we dont need conn_manager since there is only one connection.for server we use one conn_manager for all connections
struct conn_manager_t // manager for connections. for client,we dont need conn_manager since there is only one connection.for server we use one conn_manager for all connections
{
u32_t ready_num;
u32_t ready_num;
// unordered_map<int,conn_info_t *> udp_fd_mp; //a bit dirty to used pointer,but can void unordered_map search
// unordered_map<int,conn_info_t *> timer_fd_mp;//we can use pointer here since unordered_map.rehash() uses shallow copy
//unordered_map<int,conn_info_t *> udp_fd_mp; //a bit dirty to used pointer,but can void unordered_map search
//unordered_map<int,conn_info_t *> timer_fd_mp;//we can use pointer here since unordered_map.rehash() uses shallow copy
unordered_map<my_id_t, conn_info_t *> const_id_mp;
unordered_map<my_id_t,conn_info_t *> const_id_mp;
unordered_map<address_t, conn_info_t *> mp; // put it at end so that it de-consturcts first
unordered_map<address_t,conn_info_t*> mp; //put it at end so that it de-consturcts first
// lru_collector_t<address_t> lru;
//lru_collector_t<address_t> lru;
unordered_map<address_t, conn_info_t *>::iterator clear_it;
unordered_map<address_t,conn_info_t*>::iterator clear_it;
long long last_clear_time;
long long last_clear_time;
conn_manager_t();
int exist(address_t addr);
/*
int insert(uint32_t ip,uint16_t port)
{
uint64_t u64=0;
u64=ip;
u64<<=32u;
u64|=port;
mp[u64];
return 0;
}*/
conn_info_t *& find_insert_p(address_t addr); //be aware,the adress may change after rehash //not true?
conn_info_t & find_insert(address_t addr) ; //be aware,the adress may change after rehash
int erase(unordered_map<address_t,conn_info_t*>::iterator erase_it);
int clear_inactive();
int clear_inactive0();
conn_manager_t();
int exist(address_t addr);
/*
int insert(uint32_t ip,uint16_t port)
{
uint64_t u64=0;
u64=ip;
u64<<=32u;
u64|=port;
mp[u64];
return 0;
}*/
conn_info_t *&find_insert_p(address_t addr); // be aware,the adress may change after rehash //not true?
conn_info_t &find_insert(address_t addr); // be aware,the adress may change after rehash
int erase(unordered_map<address_t, conn_info_t *>::iterator erase_it);
int clear_inactive();
int clear_inactive0();
};
extern conn_manager_t conn_manager;
void server_clear_function(u64_t u64);
int send_bare(raw_info_t &raw_info,const char* data,int len);//send function with encryption but no anti replay,this is used when client and server verifys each other
//you have to design the protocol carefully, so that you wont be affect by relay attack
//int reserved_parse_bare(const char *input,int input_len,char* & data,int & len); // a sub function used in recv_bare
int recv_bare(raw_info_t &raw_info,char* & data,int & len);//recv function with encryption but no anti replay,this is used when client and server verifys each other
//you have to design the protocol carefully, so that you wont be affect by relay attack
int send_handshake(raw_info_t &raw_info,my_id_t id1,my_id_t id2,my_id_t id3);// a warp for send_bare for sending handshake(this is not tcp handshake) easily
int send_safer(conn_info_t &conn_info,char type,const char* data,int len); //safer transfer function with anti-replay,when mutually verification is done.
int send_data_safer(conn_info_t &conn_info,const char* data,int len,u32_t conv_num);//a wrap for send_safer for transfer data.
//int reserved_parse_safer(conn_info_t &conn_info,const char * input,int input_len,char &type,char* &data,int &len);//subfunction for recv_safer,allow overlap
int send_bare(raw_info_t &raw_info, const char *data, int len); // send function with encryption but no anti replay,this is used when client and server verifys each other
// you have to design the protocol carefully, so that you wont be affect by relay attack
// int reserved_parse_bare(const char *input,int input_len,char* & data,int & len); // a sub function used in recv_bare
int recv_bare(raw_info_t &raw_info, char *&data, int &len); // recv function with encryption but no anti replay,this is used when client and server verifys each other
// you have to design the protocol carefully, so that you wont be affect by relay attack
int send_handshake(raw_info_t &raw_info, my_id_t id1, my_id_t id2, my_id_t id3); // a warp for send_bare for sending handshake(this is not tcp handshake) easily
int send_safer(conn_info_t &conn_info, char type, const char *data, int len); // safer transfer function with anti-replay,when mutually verification is done.
int send_data_safer(conn_info_t &conn_info, const char *data, int len, u32_t conv_num); // a wrap for send_safer for transfer data.
// int reserved_parse_safer(conn_info_t &conn_info,const char * input,int input_len,char &type,char* &data,int &len);//subfunction for recv_safer,allow overlap
//int recv_safer(conn_info_t &conn_info,char &type,char* &data,int &len);///safer transfer function with anti-replay,when mutually verification is done.
// int recv_safer(conn_info_t &conn_info,char &type,char* &data,int &len);///safer transfer function with anti-replay,when mutually verification is done.
int recv_safer_multi(conn_info_t &conn_info,vector<char> &type_arr,vector<string> &data_arr);//new api for handle gro
#endif /* CONNECTION_H_ */
int recv_safer_multi(conn_info_t &conn_info, vector<char> &type_arr, vector<string> &data_arr); // new api for handle gro
#endif /* CONNECTION_H_ */

913
encrypt.cpp Executable file → Normal file
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File diff suppressed because it is too large Load Diff

44
encrypt.h Executable file → Normal file
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@ -1,33 +1,35 @@
#ifndef UDP2RAW_ENCRYPTION_H_
#define UDP2RAW_ENCRYPTION_H_
//#include "aes.h"
//#include "md5.h"
#include "common.h"
// using namespace std;
// extern char key[16];
//using namespace std;
//extern char key[16];
const int aes_key_optimize=1; //if enabled,once you used a key for aes,you cant change it anymore
const int aes_key_optimize = 1; // if enabled,once you used a key for aes,you cant change it anymore
extern int aes128cfb_old;
int my_init_keys(const char *,int);
int my_init_keys(const char *, int);
int my_encrypt(const char *data,char *output,int &len);
int my_decrypt(const char *data,char *output,int &len);
int my_encrypt(const char *data, char *output, int &len);
int my_decrypt(const char *data, char *output, int &len);
unsigned short csum(const unsigned short *ptr, int nbytes);
unsigned short csum(const unsigned short *ptr,int nbytes) ;
enum auth_mode_t {auth_none=0,auth_md5,auth_crc32,auth_simple,auth_hmac_sha1,auth_end};
enum cipher_mode_t {cipher_none=0,cipher_aes128cbc,cipher_xor,cipher_aes128cfb,cipher_end};
enum auth_mode_t { auth_none = 0,
auth_md5,
auth_crc32,
auth_simple,
auth_hmac_sha1,
auth_end };
enum cipher_mode_t { cipher_none = 0,
cipher_aes128cbc,
cipher_xor,
cipher_aes128cfb,
cipher_end };
extern auth_mode_t auth_mode;
extern cipher_mode_t cipher_mode;
@ -35,13 +37,13 @@ extern cipher_mode_t cipher_mode;
extern unordered_map<int, const char *> auth_mode_tostring;
extern unordered_map<int, const char *> cipher_mode_tostring;
extern char gro_xor[256+100];
extern char gro_xor[256 + 100];
int cipher_decrypt(const char *data,char *output,int &len,char * key);//internal interface ,exposed for test only
int cipher_encrypt(const char *data,char *output,int &len,char * key);//internal interface ,exposed for test only
int cipher_decrypt(const char *data, char *output, int &len, char *key); // internal interface ,exposed for test only
int cipher_encrypt(const char *data, char *output, int &len, char *key); // internal interface ,exposed for test only
void aes_ecb_encrypt(const char *data,char *output);
void aes_ecb_decrypt(const char *data,char *output);
void aes_ecb_encrypt(const char *data, char *output);
void aes_ecb_decrypt(const char *data, char *output);
void aes_ecb_encrypt1(char *data);
void aes_ecb_decrypt1(char *data);

83
fd_manager.cpp
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@ -5,60 +5,49 @@
* Author: root
*/
#include "fd_manager.h"
int fd_manager_t::fd_exist(int fd)
{
return fd_to_fd64_mp.find(fd)!=fd_to_fd64_mp.end();
int fd_manager_t::fd_exist(int fd) {
return fd_to_fd64_mp.find(fd) != fd_to_fd64_mp.end();
}
int fd_manager_t::exist(fd64_t fd64)
{
return fd64_to_fd_mp.find(fd64)!=fd64_to_fd_mp.end();
int fd_manager_t::exist(fd64_t fd64) {
return fd64_to_fd_mp.find(fd64) != fd64_to_fd_mp.end();
}
int fd_manager_t::to_fd(fd64_t fd64)
{
assert(exist(fd64));
return fd64_to_fd_mp[fd64];
int fd_manager_t::to_fd(fd64_t fd64) {
assert(exist(fd64));
return fd64_to_fd_mp[fd64];
}
void fd_manager_t::fd64_close(fd64_t fd64)
{
assert(exist(fd64));
int fd=fd64_to_fd_mp[fd64];
fd64_to_fd_mp.erase(fd64);
fd_to_fd64_mp.erase(fd);
if(exist_info(fd64))
{
fd_info_mp.erase(fd64);
}
//assert(close(fd)==0);
sock_close(fd);
void fd_manager_t::fd64_close(fd64_t fd64) {
assert(exist(fd64));
int fd = fd64_to_fd_mp[fd64];
fd64_to_fd_mp.erase(fd64);
fd_to_fd64_mp.erase(fd);
if (exist_info(fd64)) {
fd_info_mp.erase(fd64);
}
// assert(close(fd)==0);
sock_close(fd);
}
void fd_manager_t::reserve(int n)
{
fd_to_fd64_mp.reserve(n);
fd64_to_fd_mp.reserve(n);
fd_info_mp.reserve(n);
void fd_manager_t::reserve(int n) {
fd_to_fd64_mp.reserve(n);
fd64_to_fd_mp.reserve(n);
fd_info_mp.reserve(n);
}
u64_t fd_manager_t::create(int fd)
{
assert(!fd_exist(fd));
fd64_t fd64=counter++;
fd_to_fd64_mp[fd]=fd64;
fd64_to_fd_mp[fd64]=fd;
return fd64;
u64_t fd_manager_t::create(int fd) {
assert(!fd_exist(fd));
fd64_t fd64 = counter++;
fd_to_fd64_mp[fd] = fd64;
fd64_to_fd_mp[fd64] = fd;
return fd64;
}
fd_manager_t::fd_manager_t()
{
counter=u32_t(-1);
counter+=100;
reserve(10007);
fd_manager_t::fd_manager_t() {
counter = u32_t(-1);
counter += 100;
reserve(10007);
}
fd_info_t & fd_manager_t::get_info(fd64_t fd64)
{
assert(exist(fd64));
return fd_info_mp[fd64];
fd_info_t& fd_manager_t::get_info(fd64_t fd64) {
assert(exist(fd64));
return fd_info_mp[fd64];
}
int fd_manager_t::exist_info(fd64_t fd64)
{
return fd_info_mp.find(fd64)!=fd_info_mp.end();
int fd_manager_t::exist_info(fd64_t fd64) {
return fd_info_mp.find(fd64) != fd_info_mp.end();
}

44
fd_manager.h
View File

@ -12,31 +12,31 @@
//#include "packet.h"
#include "connection.h"
struct fd_info_t
{
//ip_port_t ip_port;
conn_info_t *p_conn_info;
struct fd_info_t {
// ip_port_t ip_port;
conn_info_t *p_conn_info;
};
struct fd_manager_t //conver fd to a uniq 64bit number,avoid fd value conflict caused by close and re-create
//this class is not strictly necessary,it just makes epoll fd handling easier
struct fd_manager_t // conver fd to a uniq 64bit number,avoid fd value conflict caused by close and re-create
// this class is not strictly necessary,it just makes epoll fd handling easier
{
fd_info_t & get_info(fd64_t fd64);
int exist_info(fd64_t);
int exist(fd64_t fd64);
int to_fd(fd64_t);
void fd64_close(fd64_t fd64);
void reserve(int n);
u64_t create(int fd);
fd_manager_t();
private:
u64_t counter;
unordered_map<int,fd64_t> fd_to_fd64_mp;
unordered_map<fd64_t,int> fd64_to_fd_mp;
unordered_map<fd64_t,fd_info_t> fd_info_mp;
int fd_exist(int fd);
//void remove_fd(int fd);
//fd64_t fd_to_fd64(int fd);
fd_info_t &get_info(fd64_t fd64);
int exist_info(fd64_t);
int exist(fd64_t fd64);
int to_fd(fd64_t);
void fd64_close(fd64_t fd64);
void reserve(int n);
u64_t create(int fd);
fd_manager_t();
private:
u64_t counter;
unordered_map<int, fd64_t> fd_to_fd64_mp;
unordered_map<fd64_t, int> fd64_to_fd_mp;
unordered_map<fd64_t, fd_info_t> fd_info_mp;
int fd_exist(int fd);
// void remove_fd(int fd);
// fd64_t fd_to_fd64(int fd);
};
extern fd_manager_t fd_manager;

87
log.cpp Executable file → Normal file
View File

@ -1,62 +1,57 @@
#include "log.h"
#include "misc.h"
int log_level=log_info;
int log_level = log_info;
int enable_log_position=0;
int enable_log_color=1;
int enable_log_position = 0;
int enable_log_color = 1;
void log0(const char * file,const char * function,int line,int level,const char* str, ...) {
void log0(const char* file, const char* function, int line, int level, const char* str, ...) {
if (level > log_level) return;
if (level > log_trace || level < 0) return;
if(level>log_level) return ;
if(level>log_trace||level<0) return ;
time_t timer;
char buffer[100];
struct tm* tm_info;
time(&timer);
tm_info = localtime(&timer);
time_t timer;
char buffer[100];
struct tm* tm_info;
if (enable_log_color)
printf("%s", log_color[level]);
time(&timer);
tm_info = localtime(&timer);
strftime(buffer, 100, "%Y-%m-%d %H:%M:%S", tm_info);
printf("[%s][%s]", buffer, log_text[level]);
if(enable_log_color)
printf("%s",log_color[level]);
if (enable_log_position) printf("[%s,func:%s,line:%d]", file, function, line);
strftime(buffer, 100, "%Y-%m-%d %H:%M:%S", tm_info);
printf("[%s][%s]",buffer,log_text[level]);
va_list vlist;
va_start(vlist, str);
vfprintf(stdout, str, vlist);
va_end(vlist);
if (enable_log_color)
printf("%s", RESET);
if(enable_log_position)printf("[%s,func:%s,line:%d]",file,function,line);
// printf("\n");
// if(enable_log_color)
// printf(log_color[level]);
fflush(stdout);
va_list vlist;
va_start(vlist, str);
vfprintf(stdout, str, vlist);
va_end(vlist);
if(enable_log_color)
printf("%s",RESET);
//printf("\n");
//if(enable_log_color)
//printf(log_color[level]);
fflush(stdout);
if(log_level==log_fatal)
{
about_to_exit=1;
}
if (log_level == log_fatal) {
about_to_exit = 1;
}
}
void log_bare(int level,const char* str, ...)
{
if(level>log_level) return ;
if(level>log_trace||level<0) return ;
if(enable_log_color)
printf("%s",log_color[level]);
va_list vlist;
va_start(vlist, str);
vfprintf(stdout, str, vlist);
va_end(vlist);
if(enable_log_color)
printf("%s",RESET);
fflush(stdout);
void log_bare(int level, const char* str, ...) {
if (level > log_level) return;
if (level > log_trace || level < 0) return;
if (enable_log_color)
printf("%s", log_color[level]);
va_list vlist;
va_start(vlist, str);
vfprintf(stdout, str, vlist);
va_end(vlist);
if (enable_log_color)
printf("%s", RESET);
fflush(stdout);
}

49
log.h Executable file → Normal file
View File

@ -2,53 +2,46 @@
#ifndef UDP2RAW_LOG_MYLOG_H_
#define UDP2RAW_LOG_MYLOG_H_
#include "common.h"
using namespace std;
#define RED "\x1B[31m"
#define GRN "\x1B[32m"
#define YEL "\x1B[33m"
#define BLU "\x1B[34m"
#define MAG "\x1B[35m"
#define CYN "\x1B[36m"
#define WHT "\x1B[37m"
#define RED "\x1B[31m"
#define GRN "\x1B[32m"
#define YEL "\x1B[33m"
#define BLU "\x1B[34m"
#define MAG "\x1B[35m"
#define CYN "\x1B[36m"
#define WHT "\x1B[37m"
#define RESET "\x1B[0m"
const int log_never = 0;
const int log_fatal = 1;
const int log_error = 2;
const int log_warn = 3;
const int log_info = 4;
const int log_debug = 5;
const int log_trace = 6;
const int log_end = 7;
const int log_never=0;
const int log_fatal=1;
const int log_error=2;
const int log_warn=3;
const int log_info=4;
const int log_debug=5;
const int log_trace=6;
const int log_end=7;
const char log_text[][20]={"NEVER","FATAL","ERROR","WARN","INFO","DEBUG","TRACE",""};
const char log_color[][20]={RED,RED,RED,YEL,GRN,MAG,""};
const char log_text[][20] = {"NEVER", "FATAL", "ERROR", "WARN", "INFO", "DEBUG", "TRACE", ""};
const char log_color[][20] = {RED, RED, RED, YEL, GRN, MAG, ""};
extern int log_level;
extern int enable_log_position;
extern int enable_log_color;
#ifdef MY_DEBUG
#define mylog(__first_argu__dummy_abcde__,...) printf(__VA_ARGS__)
#define mylog(__first_argu__dummy_abcde__, ...) printf(__VA_ARGS__)
#else
#define mylog(...) log0(__FILE__,__FUNCTION__,__LINE__,__VA_ARGS__)
#define mylog(...) log0(__FILE__, __FUNCTION__, __LINE__, __VA_ARGS__)
#endif
//#define mylog(__first_argu__dummy_abcde__,...) {;}
void log0(const char * file,const char * function,int line,int level,const char* str, ...);
void log_bare(int level,const char* str, ...);
void log0(const char* file, const char* function, int line, int level, const char* str, ...);
void log_bare(int level, const char* str, ...);
#endif

130
main.cpp Executable file → Normal file
View File

@ -7,114 +7,100 @@
#include "encrypt.h"
#include "fd_manager.h"
void sigpipe_cb(struct ev_loop *l, ev_signal *w, int revents)
{
mylog(log_info, "got sigpipe, ignored");
void sigpipe_cb(struct ev_loop *l, ev_signal *w, int revents) {
mylog(log_info, "got sigpipe, ignored");
}
void sigterm_cb(struct ev_loop *l, ev_signal *w, int revents)
{
mylog(log_info, "got sigterm, exit");
myexit(0);
void sigterm_cb(struct ev_loop *l, ev_signal *w, int revents) {
mylog(log_info, "got sigterm, exit");
myexit(0);
}
void sigint_cb(struct ev_loop *l, ev_signal *w, int revents)
{
mylog(log_info, "got sigint, exit");
myexit(0);
void sigint_cb(struct ev_loop *l, ev_signal *w, int revents) {
mylog(log_info, "got sigint, exit");
myexit(0);
}
int client_event_loop();
int server_event_loop();
int main(int argc, char *argv[])
{
assert(sizeof(unsigned short)==2);
assert(sizeof(unsigned int)==4);
assert(sizeof(unsigned long long)==8);
int main(int argc, char *argv[]) {
assert(sizeof(unsigned short) == 2);
assert(sizeof(unsigned int) == 4);
assert(sizeof(unsigned long long) == 8);
#ifdef UDP2RAW_MP
init_ws();
init_ws();
#endif
dup2(1, 2);//redirect stderr to stdout
dup2(1, 2); // redirect stderr to stdout
#if defined(__MINGW32__)
enable_log_color=0;
enable_log_color = 0;
#endif
pre_process_arg(argc,argv);
pre_process_arg(argc, argv);
if(program_mode==client_mode)
{
struct ev_loop* loop=ev_default_loop(0);
if (program_mode == client_mode) {
struct ev_loop *loop = ev_default_loop(0);
#if !defined(__MINGW32__)
ev_signal signal_watcher_sigpipe;
ev_signal_init(&signal_watcher_sigpipe, sigpipe_cb, SIGPIPE);
ev_signal_start(loop, &signal_watcher_sigpipe);
ev_signal signal_watcher_sigpipe;
ev_signal_init(&signal_watcher_sigpipe, sigpipe_cb, SIGPIPE);
ev_signal_start(loop, &signal_watcher_sigpipe);
#endif
ev_signal signal_watcher_sigterm;
ev_signal_init(&signal_watcher_sigterm, sigterm_cb, SIGTERM);
ev_signal_start(loop, &signal_watcher_sigterm);
ev_signal signal_watcher_sigterm;
ev_signal_init(&signal_watcher_sigterm, sigterm_cb, SIGTERM);
ev_signal_start(loop, &signal_watcher_sigterm);
ev_signal signal_watcher_sigint;
ev_signal_init(&signal_watcher_sigint, sigint_cb, SIGINT);
ev_signal_start(loop, &signal_watcher_sigint);
}
else
{
ev_signal signal_watcher_sigint;
ev_signal_init(&signal_watcher_sigint, sigint_cb, SIGINT);
ev_signal_start(loop, &signal_watcher_sigint);
} else {
#ifdef UDP2RAW_LINUX
signal(SIGINT, signal_handler);
signal(SIGHUP, signal_handler);
signal(SIGKILL, signal_handler);
signal(SIGTERM, signal_handler);
signal(SIGQUIT, signal_handler);
signal(SIGINT, signal_handler);
signal(SIGHUP, signal_handler);
signal(SIGKILL, signal_handler);
signal(SIGTERM, signal_handler);
signal(SIGQUIT, signal_handler);
#else
mylog(log_fatal,"server mode not supported in multi-platform version\n");
myexit(-1);
mylog(log_fatal, "server mode not supported in multi-platform version\n");
myexit(-1);
#endif
}
}
#if !defined(__MINGW32__)
if(geteuid() != 0)
{
mylog(log_warn,"root check failed, it seems like you are using a non-root account. we can try to continue, but it may fail. If you want to run udp2raw as non-root, you have to add iptables rule manually, and grant udp2raw CAP_NET_RAW capability, check README.md in repo for more info.\n");
}
else
{
mylog(log_warn,"you can run udp2raw with non-root account for better security. check README.md in repo for more info.\n");
}
if (geteuid() != 0) {
mylog(log_warn, "root check failed, it seems like you are using a non-root account. we can try to continue, but it may fail. If you want to run udp2raw as non-root, you have to add iptables rule manually, and grant udp2raw CAP_NET_RAW capability, check README.md in repo for more info.\n");
} else {
mylog(log_warn, "you can run udp2raw with non-root account for better security. check README.md in repo for more info.\n");
}
#endif
mylog(log_info,"remote_ip=[%s], make sure this is a vaild IP address\n",remote_addr.get_ip());
mylog(log_info, "remote_ip=[%s], make sure this is a vaild IP address\n", remote_addr.get_ip());
//init_random_number_fd();
srand(get_true_random_number_nz());
const_id=get_true_random_number_nz();
// init_random_number_fd();
srand(get_true_random_number_nz());
const_id = get_true_random_number_nz();
mylog(log_info,"const_id:%x\n",const_id);
mylog(log_info, "const_id:%x\n", const_id);
my_init_keys(key_string,program_mode==client_mode?1:0);
my_init_keys(key_string, program_mode == client_mode ? 1 : 0);
iptables_rule();
iptables_rule();
#ifdef UDP2RAW_LINUX
init_raw_socket();
init_raw_socket();
#endif
if(program_mode==client_mode)
{
client_event_loop();
}
else
{
if (program_mode == client_mode) {
client_event_loop();
} else {
#ifdef UDP2RAW_LINUX
server_event_loop();
server_event_loop();
#else
mylog(log_fatal,"server mode not supported in multi-platform version\n");
myexit(-1);
mylog(log_fatal, "server mode not supported in multi-platform version\n");
myexit(-1);
#endif
}
}
return 0;
return 0;
}

2503
misc.cpp
View File

File diff suppressed because it is too large Load Diff

140
misc.h
View File

@ -8,7 +8,6 @@
#ifndef MISC_H_
#define MISC_H_
#include "common.h"
#include "log.h"
#include "network.h"
@ -26,128 +25,131 @@ extern int enable_dns_resolve;
extern int ttl_value;
const u32_t max_handshake_conn_num = 10000;
const u32_t max_ready_conn_num = 1000;
const u32_t anti_replay_window_size = 4000;
const int max_conv_num = 10000;
const u32_t max_handshake_conn_num=10000;
const u32_t max_ready_conn_num=1000;
const u32_t anti_replay_window_size=4000;
const int max_conv_num=10000;
const u32_t client_handshake_timeout = 5000; // unit ms
const u32_t client_retry_interval = 1000; // ms
const u32_t client_handshake_timeout=5000;//unit ms
const u32_t client_retry_interval=1000;//ms
const u32_t server_handshake_timeout = client_handshake_timeout + 5000; // this should be longer than clients. client retry initially ,server retry passtively
const u32_t server_handshake_timeout=client_handshake_timeout+5000;// this should be longer than clients. client retry initially ,server retry passtively
const int conv_clear_ratio = 30; // conv grabage collecter check 1/30 of all conv one time
const int conn_clear_ratio = 50;
const int conv_clear_min = 1;
const int conn_clear_min = 1;
const int conv_clear_ratio=30; //conv grabage collecter check 1/30 of all conv one time
const int conn_clear_ratio=50;
const int conv_clear_min=1;
const int conn_clear_min=1;
const u32_t conv_clear_interval = 1000; // ms
const u32_t conn_clear_interval = 1000; // ms
const u32_t conv_clear_interval=1000;//ms
const u32_t conn_clear_interval=1000;//ms
const i32_t max_fail_time = 0; // disable
const u32_t heartbeat_interval = 600; // ms
const i32_t max_fail_time=0;//disable
const u32_t timer_interval = 400; // ms. this should be smaller than heartbeat_interval and retry interval;
const u32_t heartbeat_interval=600;//ms
const uint32_t conv_timeout = 180000; // ms. 120 second
// const u32_t conv_timeout=30000; //for test
const u32_t timer_interval=400;//ms. this should be smaller than heartbeat_interval and retry interval;
const u32_t client_conn_timeout = 10000; // ms.
const u32_t client_conn_uplink_timeout = client_conn_timeout + 2000; // ms
const uint32_t conv_timeout=180000; //ms. 120 second
//const u32_t conv_timeout=30000; //for test
const uint32_t server_conn_timeout = conv_timeout + 60000; // ms. this should be 60s+ longer than conv_timeout,so that conv_manager can destruct convs gradually,to avoid latency glicth
// const u32_t server_conn_timeout=conv_timeout+10000;//for test
const u32_t client_conn_timeout=10000;//ms.
const u32_t client_conn_uplink_timeout=client_conn_timeout+2000;//ms
const u32_t iptables_rule_keep_interval = 20; // unit: second;
const uint32_t server_conn_timeout=conv_timeout+60000;//ms. this should be 60s+ longer than conv_timeout,so that conv_manager can destruct convs gradually,to avoid latency glicth
//const u32_t server_conn_timeout=conv_timeout+10000;//for test
enum server_current_state_t { server_idle = 0,
server_handshake1,
server_ready }; // server state machine
enum client_current_state_t { client_idle = 0,
client_tcp_handshake,
client_handshake1,
client_handshake2,
client_ready,
client_tcp_handshake_dummy }; // client state machine
const u32_t iptables_rule_keep_interval=20;//unit: second;
enum raw_mode_t { mode_faketcp = 0,
mode_udp,
mode_icmp,
mode_end };
enum program_mode_t { unset_mode = 0,
client_mode,
server_mode };
enum server_current_state_t {server_idle=0,server_handshake1,server_ready}; //server state machine
enum client_current_state_t {client_idle=0,client_tcp_handshake,client_handshake1,client_handshake2,client_ready,client_tcp_handshake_dummy};//client state machine
enum raw_mode_t{mode_faketcp=0,mode_udp,mode_icmp,mode_end};
enum program_mode_t {unset_mode=0,client_mode,server_mode};
union current_state_t
{
server_current_state_t server_current_state;
client_current_state_t client_current_state;
union current_state_t {
server_current_state_t server_current_state;
client_current_state_t client_current_state;
};
//extern char remote_address[max_address_len];
//extern char local_ip[100], remote_ip[100],source_ip[100];//local_ip is for -l option,remote_ip for -r option,source for --source-ip
//extern u32_t local_ip_uint32,remote_ip_uint32,source_ip_uint32;//convert from last line.
//extern int local_port , remote_port,source_port;//similiar to local_ip remote_ip,buf for port.source_port=0 indicates --source-port is not enabled
// extern char remote_address[max_address_len];
// extern char local_ip[100], remote_ip[100],source_ip[100];//local_ip is for -l option,remote_ip for -r option,source for --source-ip
// extern u32_t local_ip_uint32,remote_ip_uint32,source_ip_uint32;//convert from last line.
// extern int local_port , remote_port,source_port;//similiar to local_ip remote_ip,buf for port.source_port=0 indicates --source-port is not enabled
extern address_t local_addr,remote_addr,source_addr;
extern address_t local_addr, remote_addr, source_addr;
extern my_ip_t bind_addr;
extern int bind_addr_used;
extern int force_source_ip; //if --source-ip is enabled
extern int force_source_ip; // if --source-ip is enabled
extern int force_source_port;
extern int source_port;
extern my_id_t const_id;//an id used for connection recovery,its generated randomly,it never change since its generated
extern my_id_t const_id; // an id used for connection recovery,its generated randomly,it never change since its generated
extern int udp_fd; //for client only. client use this fd to listen and handle udp connection
extern int bind_fd; //bind only,never send or recv. its just a dummy fd for bind,so that other program wont occupy the same port
extern int epollfd; //fd for epoll
extern int timer_fd; //the general timer fd for client and server.for server this is not the only timer find,every connection has a timer fd.
extern int fail_time_counter;//determine if the max_fail_time is reached
extern int epoll_trigger_counter;//for debug only
extern int debug_flag;//for debug only
extern int udp_fd; // for client only. client use this fd to listen and handle udp connection
extern int bind_fd; // bind only,never send or recv. its just a dummy fd for bind,so that other program wont occupy the same port
extern int epollfd; // fd for epoll
extern int timer_fd; // the general timer fd for client and server.for server this is not the only timer find,every connection has a timer fd.
extern int fail_time_counter; // determine if the max_fail_time is reached
extern int epoll_trigger_counter; // for debug only
extern int debug_flag; // for debug only
extern int simple_rule; //deprecated.
extern int keep_rule; //whether to monitor the iptables rule periodly,re-add if losted
extern int auto_add_iptables_rule;//if -a is set
extern int generate_iptables_rule;//if -g is set
extern int generate_iptables_rule_add;// if --gen-add is set
extern int simple_rule; // deprecated.
extern int keep_rule; // whether to monitor the iptables rule periodly,re-add if losted
extern int auto_add_iptables_rule; // if -a is set
extern int generate_iptables_rule; // if -g is set
extern int generate_iptables_rule_add; // if --gen-add is set
extern int retry_on_error;
const int retry_on_error_interval=10;
const int retry_on_error_interval = 10;
extern int debug_resend; // debug only
extern int debug_resend; // debug only
extern char key_string[1000];// -k option
extern char key_string[1000]; // -k option
extern char fifo_file[1000];
extern raw_mode_t raw_mode;
extern u32_t raw_ip_version;
extern program_mode_t program_mode;
extern unordered_map<int, const char*> raw_mode_tostring ;
extern unordered_map<int, const char *> raw_mode_tostring;
extern int about_to_exit;
extern int socket_buf_size;
extern pthread_t keep_thread;
extern int keep_thread_running;
int process_lower_level_arg();
void print_help();
void iptables_rule();
void pre_process_arg(int argc, char *argv[]);//mainly for load conf file;
void pre_process_arg(int argc, char *argv[]); // mainly for load conf file;
int unit_test();
int set_timer(int epollfd,int &timer_fd);
int set_timer_server(int epollfd,int &timer_fd,fd64_t &fd64);
int set_timer(int epollfd, int &timer_fd);
int set_timer_server(int epollfd, int &timer_fd, fd64_t &fd64);
int handle_lower_level(raw_info_t &raw_info);
int add_iptables_rule(const char *);
int clear_iptables_rule();
int iptables_gen_add(const char * s,u32_t const_id);
int iptables_rule_init(const char * s,u32_t const_id,int keep);
int iptables_gen_add(const char *s, u32_t const_id);
int iptables_rule_init(const char *s, u32_t const_id, int keep);
int keep_iptables_rule();
void signal_handler(int sig);
void signal_handler(int sig);
#endif /* MISC_H_ */

1
my_ev.h
View File

@ -2,4 +2,3 @@
#include "my_ev_common.h"
#include "ev.h"

13
my_ev_common.h
View File

@ -1,6 +1,8 @@
#define EV_STANDALONE 1
#define EV_COMMON void *data; unsigned long long u64;
#define EV_COMMON \
void *data; \
unsigned long long u64;
#define EV_COMPAT3 0
//#include <wepoll.h>
@ -8,11 +10,10 @@
//#define EV_USE_SELECT 1
//#define EV_SELECT_IS_WINSOCKET 1
# define EV_FD_TO_WIN32_HANDLE(fd) (fd)
# define EV_WIN32_HANDLE_TO_FD(handle) (handle)
# define EV_WIN32_CLOSE_FD(fd) closesocket (fd)
# define FD_SETSIZE 4096
#define EV_FD_TO_WIN32_HANDLE(fd) (fd)
#define EV_WIN32_HANDLE_TO_FD(handle) (handle)
#define EV_WIN32_CLOSE_FD(fd) closesocket(fd)
#define FD_SETSIZE 4096
#endif
//#define EV_VERIFY 2

4306
network.cpp
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File diff suppressed because it is too large Load Diff

325
network.h
View File

@ -14,7 +14,7 @@ extern int use_tcp_dummy_socket;
extern int seq_mode;
extern int max_seq_mode;
extern int filter_port;
//extern u32_t bind_address_uint32;
// extern u32_t bind_address_uint32;
extern int disable_bpf_filter;
extern int lower_level;
@ -34,7 +34,7 @@ extern int g_packet_buf_cnt;
extern queue_t my_queue;
extern ev_async async_watcher;
extern struct ev_loop* g_default_loop;
extern struct ev_loop *g_default_loop;
extern pthread_mutex_t queue_mutex;
extern int use_pcap_mutex;
@ -47,24 +47,22 @@ extern int send_with_pcap;
extern int pcap_header_captured;
extern int pcap_header_buf[buf_len];
struct icmphdr
{
uint8_t type;
uint8_t code;
uint16_t check_sum;
uint16_t id;
uint16_t seq;
struct icmphdr {
uint8_t type;
uint8_t code;
uint16_t check_sum;
uint16_t id;
uint16_t seq;
};
#endif
struct my_iphdr
{
struct my_iphdr {
#ifdef UDP2RAW_LITTLE_ENDIAN
unsigned char ihl:4;
unsigned char version:4;
unsigned char ihl : 4;
unsigned char version : 4;
#else
unsigned char version:4;
unsigned char ihl:4;
unsigned char version : 4;
unsigned char ihl : 4;
#endif
u_int8_t tos;
u_int16_t tot_len;
@ -76,105 +74,98 @@ struct my_iphdr
u_int32_t saddr;
u_int32_t daddr;
/*The options start here. */
};
struct my_udphdr
{
/*__extension__*/ union
{
struct
{
u_int16_t uh_sport; /* source port */
u_int16_t uh_dport; /* destination port */
u_int16_t uh_ulen; /* udp length */
u_int16_t uh_sum; /* udp checksum */
};
struct
{
u_int16_t source;
u_int16_t dest;
u_int16_t len;
u_int16_t check;
};
};
};
struct my_tcphdr
{
/*__extension__*/ union
{
struct
{
u_int16_t th_sport; /* source port */
u_int16_t th_dport; /* destination port */
u_int32_t th_seq; /* sequence number */
u_int32_t th_ack; /* acknowledgement number */
# ifdef UDP2RAW_LITTLE_ENDIAN
u_int8_t th_x2:4; /* (unused) */
u_int8_t tc_off:4; /* data offset */
# else
u_int8_t th_off:4; /* data offset */
u_int8_t th_x2:4; /* (unused) */
# endif
u_int8_t th_flags;
# define TH_FIN 0x01
# define TH_SYN 0x02
# define TH_RST 0x04
# define TH_PUSH 0x08
# define TH_ACK 0x10
# define TH_URG 0x20
u_int16_t th_win; /* window */
u_int16_t th_sum; /* checksum */
u_int16_t th_urp; /* urgent pointer */
};
struct
{
u_int16_t source;
u_int16_t dest;
u_int32_t seq;
u_int32_t ack_seq;
# ifdef UDP2RAW_LITTLE_ENDIAN
u_int16_t res1:4;
u_int16_t doff:4;
u_int16_t fin:1;
u_int16_t syn:1;
u_int16_t rst:1;
u_int16_t psh:1;
u_int16_t ack:1;
u_int16_t urg:1;
u_int16_t res2:2;
# else
u_int16_t doff:4;
u_int16_t res1:4;
u_int16_t res2:2;
u_int16_t urg:1;
u_int16_t ack:1;
u_int16_t psh:1;
u_int16_t rst:1;
u_int16_t syn:1;
u_int16_t fin:1;
# endif
u_int16_t window;
u_int16_t check;
u_int16_t urg_ptr;
};
struct my_udphdr {
/*__extension__*/ union {
struct
{
u_int16_t uh_sport; /* source port */
u_int16_t uh_dport; /* destination port */
u_int16_t uh_ulen; /* udp length */
u_int16_t uh_sum; /* udp checksum */
};
struct
{
u_int16_t source;
u_int16_t dest;
u_int16_t len;
u_int16_t check;
};
};
};
struct my_ip6hdr
{
# ifdef UDP2RAW_LITTLE_ENDIAN
uint8_t traffic_class_high:4;
uint8_t version:4;
uint8_t flow_label_high:4;
uint8_t traffic_class_low:4;
struct my_tcphdr {
/*__extension__*/ union {
struct
{
u_int16_t th_sport; /* source port */
u_int16_t th_dport; /* destination port */
u_int32_t th_seq; /* sequence number */
u_int32_t th_ack; /* acknowledgement number */
#ifdef UDP2RAW_LITTLE_ENDIAN
u_int8_t th_x2 : 4; /* (unused) */
u_int8_t tc_off : 4; /* data offset */
#else
uint8_t version:4;
uint8_t traffic_class_high:4;
uint8_t traffic_class_low:4;
uint8_t flow_label_high:4;
u_int8_t th_off : 4; /* data offset */
u_int8_t th_x2 : 4; /* (unused) */
#endif
u_int8_t th_flags;
#define TH_FIN 0x01
#define TH_SYN 0x02
#define TH_RST 0x04
#define TH_PUSH 0x08
#define TH_ACK 0x10
#define TH_URG 0x20
u_int16_t th_win; /* window */
u_int16_t th_sum; /* checksum */
u_int16_t th_urp; /* urgent pointer */
};
struct
{
u_int16_t source;
u_int16_t dest;
u_int32_t seq;
u_int32_t ack_seq;
#ifdef UDP2RAW_LITTLE_ENDIAN
u_int16_t res1 : 4;
u_int16_t doff : 4;
u_int16_t fin : 1;
u_int16_t syn : 1;
u_int16_t rst : 1;
u_int16_t psh : 1;
u_int16_t ack : 1;
u_int16_t urg : 1;
u_int16_t res2 : 2;
#else
u_int16_t doff : 4;
u_int16_t res1 : 4;
u_int16_t res2 : 2;
u_int16_t urg : 1;
u_int16_t ack : 1;
u_int16_t psh : 1;
u_int16_t rst : 1;
u_int16_t syn : 1;
u_int16_t fin : 1;
#endif
u_int16_t window;
u_int16_t check;
u_int16_t urg_ptr;
};
};
};
struct my_ip6hdr {
#ifdef UDP2RAW_LITTLE_ENDIAN
uint8_t traffic_class_high : 4;
uint8_t version : 4;
uint8_t flow_label_high : 4;
uint8_t traffic_class_low : 4;
#else
uint8_t version : 4;
uint8_t traffic_class_high : 4;
uint8_t traffic_class_low : 4;
uint8_t flow_label_high : 4;
#endif
u_int16_t flow_label_low;
u_int16_t payload_len;
@ -183,15 +174,14 @@ struct my_ip6hdr
struct in6_addr src;
struct in6_addr dst;
};
};
struct my_icmphdr
{
uint8_t type;
uint8_t code;
uint16_t check_sum;
uint16_t id;
uint16_t seq;
struct my_icmphdr {
uint8_t type;
uint8_t code;
uint16_t check_sum;
uint16_t id;
uint16_t seq;
};
struct pseudo_header {
@ -211,57 +201,53 @@ struct pseudo_header6 {
u_int8_t next_header;
};
struct packet_info_t //todo change this to union
struct packet_info_t // todo change this to union
{
uint8_t protocol;
uint8_t protocol;
// u32_t src_ip;
// u32_t dst_ip;
my_ip_t new_src_ip;
my_ip_t new_dst_ip;
//u32_t src_ip;
//u32_t dst_ip;
my_ip_t new_src_ip;
my_ip_t new_dst_ip;
uint16_t src_port;
uint16_t dst_port;
uint16_t src_port;
uint16_t dst_port;
// tcp_part:
bool syn, ack, psh, rst;
//tcp_part:
bool syn,ack,psh,rst;
u32_t seq, ack_seq;
u32_t seq,ack_seq;
u32_t ack_seq_counter;
u32_t ack_seq_counter;
u32_t ts, ts_ack;
u32_t ts,ts_ack;
uint16_t my_icmp_seq;
uint16_t my_icmp_seq;
bool has_ts;
bool has_ts;
#ifdef UDP2RAW_LINUX
sockaddr_ll addr_ll;
sockaddr_ll addr_ll;
#endif
i32_t data_len;
i32_t data_len;
packet_info_t();
packet_info_t();
};
struct raw_info_t
{
packet_info_t send_info;
packet_info_t recv_info;
//int last_send_len;
//int last_recv_len;
bool peek=0;
//bool csum=1;
u32_t reserved_send_seq;
//uint32_t first_seq,first_ack_seq;
int rst_received=0;
bool disabled=0;
};//g_raw_info;
struct raw_info_t {
packet_info_t send_info;
packet_info_t recv_info;
// int last_send_len;
// int last_recv_len;
bool peek = 0;
// bool csum=1;
u32_t reserved_send_seq;
// uint32_t first_seq,first_ack_seq;
int rst_received = 0;
bool disabled = 0;
}; // g_raw_info;
int init_raw_socket();
@ -270,56 +256,55 @@ void init_filter(int port);
void remove_filter();
#ifdef UDP2RAW_LINUX
int init_ifindex(const char * if_name,int fd,int &index);
int init_ifindex(const char *if_name, int fd, int &index);
#endif
#ifdef UDP2RAW_MP
int init_ifindex(const char * if_name,int &index);
int init_ifindex(const char *if_name, int &index);
#endif
int find_lower_level_info(u32_t ip,u32_t &dest_ip,string &if_name,string &hw);
int find_lower_level_info(u32_t ip, u32_t &dest_ip, string &if_name, string &hw);
int get_src_adress(u32_t &ip,u32_t remote_ip_uint32,int remote_port); //a trick to get src adress for a dest adress,so that we can use the src address in raw socket as source ip
int get_src_adress2(address_t &output_addr,address_t remote_addr);
int get_src_adress(u32_t &ip, u32_t remote_ip_uint32, int remote_port); // a trick to get src adress for a dest adress,so that we can use the src address in raw socket as source ip
int get_src_adress2(address_t &output_addr, address_t remote_addr);
int try_to_list_and_bind(int & bind_fd,u32_t local_ip_uint32,int port); //try to bind to a port,may fail.
int try_to_list_and_bind2(int &fd,address_t address);
int try_to_list_and_bind(int &bind_fd, u32_t local_ip_uint32, int port); // try to bind to a port,may fail.
int try_to_list_and_bind2(int &fd, address_t address);
int client_bind_to_a_new_port(int & bind_fd,u32_t local_ip_uint32);//find a free port and bind to it.
int client_bind_to_a_new_port2(int &fd,const address_t& address);
int client_bind_to_a_new_port(int &bind_fd, u32_t local_ip_uint32); // find a free port and bind to it.
int client_bind_to_a_new_port2(int &fd, const address_t &address);
int discard_raw_packet();
int pre_recv_raw_packet();
int send_raw_ip(raw_info_t &raw_info,const char * payload,int payloadlen);
int send_raw_ip(raw_info_t &raw_info, const char *payload, int payloadlen);
int peek_raw(raw_info_t &peek_info);
int recv_raw_ip(raw_info_t &raw_info,char * &payload,int &payloadlen);
int recv_raw_ip(raw_info_t &raw_info, char *&payload, int &payloadlen);
int send_raw_icmp(raw_info_t &raw_info, const char * payload, int payloadlen);
int send_raw_icmp(raw_info_t &raw_info, const char *payload, int payloadlen);
int send_raw_udp(raw_info_t &raw_info, const char * payload, int payloadlen);
int send_raw_udp(raw_info_t &raw_info, const char *payload, int payloadlen);
int send_raw_tcp(raw_info_t &raw_info,const char * payload, int payloadlen);
int send_raw_tcp(raw_info_t &raw_info, const char *payload, int payloadlen);
int recv_raw_icmp(raw_info_t &raw_info, char *&payload, int &payloadlen);
int recv_raw_udp(raw_info_t &raw_info, char *&payload, int &payloadlen);
int recv_raw_tcp(raw_info_t &raw_info,char * &payload,int &payloadlen);
int recv_raw_tcp(raw_info_t &raw_info, char *&payload, int &payloadlen);
//int send_raw(raw_info_t &raw_info,const char * payload,int payloadlen);
// int send_raw(raw_info_t &raw_info,const char * payload,int payloadlen);
//int recv_raw(raw_info_t &raw_info,char * &payload,int &payloadlen);
// int recv_raw(raw_info_t &raw_info,char * &payload,int &payloadlen);
int send_raw0(raw_info_t &raw_info,const char * payload,int payloadlen);
int send_raw0(raw_info_t &raw_info, const char *payload, int payloadlen);
int recv_raw0(raw_info_t &raw_info,char * &payload,int &payloadlen);
int recv_raw0(raw_info_t &raw_info, char *&payload, int &payloadlen);
int after_send_raw0(raw_info_t &raw_info);
int after_recv_raw0(raw_info_t &raw_info);
#endif /* NETWORK_H_ */

204
pcap_wrapper.cpp
View File

@ -2,124 +2,118 @@
#include <pcap_wrapper.h>
#include <assert.h>
#include <stdio.h>
int (*pcap_loop )(pcap_t *, int, pcap_handler, u_char *);
int (*pcap_breakloop )(pcap_t *);
int (*pcap_loop)(pcap_t *, int, pcap_handler, u_char *);
int (*pcap_breakloop)(pcap_t *);
pcap_t* (*pcap_create)(const char *, char *);
pcap_t *(*pcap_create)(const char *, char *);
int (*pcap_set_snaplen) (pcap_t *, int)=0;
int (*pcap_set_promisc) (pcap_t *, int)=0;
int (*pcap_can_set_rfmon) (pcap_t *)=0;
int (*pcap_set_rfmon )(pcap_t *, int)=0;
int (*pcap_set_timeout)(pcap_t *, int)=0;
int (*pcap_set_buffer_size)(pcap_t *, int)=0;
int (*pcap_activate)(pcap_t *)=0;
int (*pcap_set_snaplen)(pcap_t *, int) = 0;
int (*pcap_set_promisc)(pcap_t *, int) = 0;
int (*pcap_can_set_rfmon)(pcap_t *) = 0;
int (*pcap_set_rfmon)(pcap_t *, int) = 0;
int (*pcap_set_timeout)(pcap_t *, int) = 0;
int (*pcap_set_buffer_size)(pcap_t *, int) = 0;
int (*pcap_activate)(pcap_t *) = 0;
int (*pcap_setfilter)(pcap_t *, struct bpf_program *)=0;
int (*pcap_setdirection)(pcap_t *, pcap_direction_t)=0;
int (*pcap_setfilter)(pcap_t *, struct bpf_program *) = 0;
int (*pcap_setdirection)(pcap_t *, pcap_direction_t) = 0;
int (*pcap_datalink)(pcap_t *)=0;
int (*pcap_datalink)(pcap_t *) = 0;
void (*pcap_freecode)(struct bpf_program *)=0;
void (*pcap_freecode)(struct bpf_program *) = 0;
int (*pcap_compile)(pcap_t *, struct bpf_program *, const char *, int,
bpf_u_int32)=0;
int (*pcap_compile)(pcap_t *, struct bpf_program *, const char *, int,
bpf_u_int32) = 0;
char* (*pcap_geterr)(pcap_t *)=0;
int (*pcap_sendpacket)(pcap_t *, const u_char *, int)=0;
char *(*pcap_geterr)(pcap_t *) = 0;
int (*pcap_sendpacket)(pcap_t *, const u_char *, int) = 0;
char* (*pcap_lookupdev)(char *)=0;
char *(*pcap_lookupdev)(char *) = 0;
int (*pcap_findalldevs)(pcap_if_t **, char *)=0;
int (*pcap_findalldevs)(pcap_if_t **, char *) = 0;
struct init_pcap_t
{
init_pcap_t()
{
init_pcap();
}
}do_it;
struct init_pcap_t {
init_pcap_t() {
init_pcap();
}
static void init_npcap_dll_path()
{
BOOL(WINAPI *SetDllDirectory)(LPCTSTR);
char sysdir_name[512];
int len;
} do_it;
SetDllDirectory = (BOOL(WINAPI *)(LPCTSTR)) GetProcAddress(GetModuleHandle("kernel32.dll"), "SetDllDirectoryA");
if (SetDllDirectory == NULL) {
printf("Error in SetDllDirectory\n");
}
else {
len = GetSystemDirectory(sysdir_name, 480); // be safe
if (!len)
printf("Error in GetSystemDirectory (%d)\n", (int)GetLastError());
strcat(sysdir_name, "\\Npcap");
if (SetDllDirectory(sysdir_name) == 0)
printf("Error in SetDllDirectory(\"System32\\Npcap\")\n");
}
static void init_npcap_dll_path() {
BOOL(WINAPI * SetDllDirectory)
(LPCTSTR);
char sysdir_name[512];
int len;
SetDllDirectory = (BOOL(WINAPI *)(LPCTSTR))GetProcAddress(GetModuleHandle("kernel32.dll"), "SetDllDirectoryA");
if (SetDllDirectory == NULL) {
printf("Error in SetDllDirectory\n");
} else {
len = GetSystemDirectory(sysdir_name, 480); // be safe
if (!len)
printf("Error in GetSystemDirectory (%d)\n", (int)GetLastError());
strcat(sysdir_name, "\\Npcap");
if (SetDllDirectory(sysdir_name) == 0)
printf("Error in SetDllDirectory(\"System32\\Npcap\")\n");
}
}
#define EXPORT_FUN(XXX) do{ XXX= (__typeof__(XXX)) GetProcAddress(wpcap, #XXX); }while(0)
int init_pcap()
{
HMODULE wpcap=LoadLibrary("wpcap.dll");
if(wpcap!=0)
{
printf("using system32/wpcap.dll\n");
}
else
{
init_npcap_dll_path();
//SetDllDirectory("C:\\Windows\\System32\\Npcap\\");
wpcap=LoadLibrary("wpcap.dll");
if(wpcap!=0)
printf("using system32/npcap/wpcap.dll\n");
}
if(wpcap==0)
{
printf("cant not open wpcap.dll, make sure winpcap/npcap is installed\n");
exit(-1);
}
assert(wpcap!=0);
EXPORT_FUN(pcap_loop);
EXPORT_FUN(pcap_breakloop);
EXPORT_FUN(pcap_create);
EXPORT_FUN(pcap_set_snaplen);
EXPORT_FUN(pcap_set_promisc);
EXPORT_FUN(pcap_set_timeout);
EXPORT_FUN(pcap_activate);
EXPORT_FUN(pcap_setfilter);
EXPORT_FUN(pcap_setdirection);
EXPORT_FUN(pcap_datalink);
EXPORT_FUN(pcap_freecode);
EXPORT_FUN(pcap_compile);
EXPORT_FUN(pcap_geterr);
EXPORT_FUN(pcap_sendpacket);
EXPORT_FUN(pcap_lookupdev);
EXPORT_FUN(pcap_findalldevs);
/*
pcap_loop = (__typeof__(pcap_loop))GetProcAddress(wpcap, "pcap_loop");
pcap_create = (__typeof__(pcap_create))GetProcAddress(wpcap, "pcap_create");
pcap_set_snaplen = (__typeof__(pcap_set_snaplen))GetProcAddress(wpcap, "pcap_set_snaplen");
pcap_set_promisc = (__typeof__(pcap_set_promisc))GetProcAddress(wpcap, "pcap_set_promisc");
pcap_set_timeout = (__typeof__(pcap_set_timeout))GetProcAddress(wpcap, "pcap_set_timeout");
pcap_activate = (__typeof__(pcap_activate))GetProcAddress(wpcap, "pcap_activate");
pcap_setfilter = (__typeof__(pcap_setfilter))GetProcAddress(wpcap, "pcap_setfilter");
pcap_setdirection = (__typeof__(pcap_setdirection))GetProcAddress(wpcap, "pcap_setdirection");
pcap_datalink = (__typeof__(pcap_datalink))GetProcAddress(wpcap, "pcap_datalink");
pcap_freecode = (__typeof__(pcap_freecode))GetProcAddress(wpcap, "pcap_freecode");
pcap_compile = (__typeof__(pcap_compile))GetProcAddress(wpcap, "pcap_compile");
pcap_geterr = (__typeof__(pcap_geterr))GetProcAddress(wpcap, "pcap_geterr");
pcap_sendpacket = (__typeof__(pcap_sendpacket))GetProcAddress(wpcap, "pcap_sendpacket");
pcap_lookupdev = (__typeof__(pcap_lookupdev))GetProcAddress(wpcap, "pcap_lookupdev");
pcap_findalldevs = (__typeof__(pcap_findalldevs))GetProcAddress(wpcap, "pcap_findalldevs");
//pcap_loop = (__typeof__(pcap_loop))GetProcAddress(wpcap, "pcap_loop");
//pcap_loop = (__typeof__(pcap_loop))GetProcAddress(wpcap, "pcap_loop");
//pcap_loop = (__typeof__(pcap_loop))GetProcAddress(wpcap, "pcap_loop");
*/
return 0;
#define EXPORT_FUN(XXX) \
do { \
XXX = (__typeof__(XXX))GetProcAddress(wpcap, #XXX); \
} while (0)
int init_pcap() {
HMODULE wpcap = LoadLibrary("wpcap.dll");
if (wpcap != 0) {
printf("using system32/wpcap.dll\n");
} else {
init_npcap_dll_path();
// SetDllDirectory("C:\\Windows\\System32\\Npcap\\");
wpcap = LoadLibrary("wpcap.dll");
if (wpcap != 0)
printf("using system32/npcap/wpcap.dll\n");
}
if (wpcap == 0) {
printf("cant not open wpcap.dll, make sure winpcap/npcap is installed\n");
exit(-1);
}
assert(wpcap != 0);
EXPORT_FUN(pcap_loop);
EXPORT_FUN(pcap_breakloop);
EXPORT_FUN(pcap_create);
EXPORT_FUN(pcap_set_snaplen);
EXPORT_FUN(pcap_set_promisc);
EXPORT_FUN(pcap_set_timeout);
EXPORT_FUN(pcap_activate);
EXPORT_FUN(pcap_setfilter);
EXPORT_FUN(pcap_setdirection);
EXPORT_FUN(pcap_datalink);
EXPORT_FUN(pcap_freecode);
EXPORT_FUN(pcap_compile);
EXPORT_FUN(pcap_geterr);
EXPORT_FUN(pcap_sendpacket);
EXPORT_FUN(pcap_lookupdev);
EXPORT_FUN(pcap_findalldevs);
/*
pcap_loop = (__typeof__(pcap_loop))GetProcAddress(wpcap, "pcap_loop");
pcap_create = (__typeof__(pcap_create))GetProcAddress(wpcap, "pcap_create");
pcap_set_snaplen = (__typeof__(pcap_set_snaplen))GetProcAddress(wpcap, "pcap_set_snaplen");
pcap_set_promisc = (__typeof__(pcap_set_promisc))GetProcAddress(wpcap, "pcap_set_promisc");
pcap_set_timeout = (__typeof__(pcap_set_timeout))GetProcAddress(wpcap, "pcap_set_timeout");
pcap_activate = (__typeof__(pcap_activate))GetProcAddress(wpcap, "pcap_activate");
pcap_setfilter = (__typeof__(pcap_setfilter))GetProcAddress(wpcap, "pcap_setfilter");
pcap_setdirection = (__typeof__(pcap_setdirection))GetProcAddress(wpcap, "pcap_setdirection");
pcap_datalink = (__typeof__(pcap_datalink))GetProcAddress(wpcap, "pcap_datalink");
pcap_freecode = (__typeof__(pcap_freecode))GetProcAddress(wpcap, "pcap_freecode");
pcap_compile = (__typeof__(pcap_compile))GetProcAddress(wpcap, "pcap_compile");
pcap_geterr = (__typeof__(pcap_geterr))GetProcAddress(wpcap, "pcap_geterr");
pcap_sendpacket = (__typeof__(pcap_sendpacket))GetProcAddress(wpcap, "pcap_sendpacket");
pcap_lookupdev = (__typeof__(pcap_lookupdev))GetProcAddress(wpcap, "pcap_lookupdev");
pcap_findalldevs = (__typeof__(pcap_findalldevs))GetProcAddress(wpcap, "pcap_findalldevs");
//pcap_loop = (__typeof__(pcap_loop))GetProcAddress(wpcap, "pcap_loop");
//pcap_loop = (__typeof__(pcap_loop))GetProcAddress(wpcap, "pcap_loop");
//pcap_loop = (__typeof__(pcap_loop))GetProcAddress(wpcap, "pcap_loop");
*/
return 0;
}

128
pcap_wrapper.h
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@ -1,127 +1,117 @@
#pragma once
//#ifdef __cplusplus
//extern "C" {
// extern "C" {
//#endif
//#include <sys/time.h>
//#include <stdint.h>
struct bpf_program
{
char a[4096];
struct bpf_program {
char a[4096];
};
struct pcap_t
{
char a[4096];
struct pcap_t {
char a[4096];
};
typedef unsigned int bpf_u_int32;
typedef struct my_timeval {
int tv_sec;
int tv_usec;
int tv_sec;
int tv_usec;
} my_timeval;
struct pcap_pkthdr {
struct my_timeval ts; /* time stamp */
bpf_u_int32 caplen; /* length of portion present */
bpf_u_int32 len; /* length this packet (off wire) */
struct my_timeval ts; /* time stamp */
bpf_u_int32 caplen; /* length of portion present */
bpf_u_int32 len; /* length this packet (off wire) */
};
typedef enum {
PCAP_D_INOUT = 0,
PCAP_D_IN,
PCAP_D_OUT
PCAP_D_INOUT = 0,
PCAP_D_IN,
PCAP_D_OUT
} pcap_direction_t;
struct pcap_addr {
struct pcap_addr *next;
struct sockaddr *addr; /* address */
struct sockaddr *netmask; /* netmask for that address */
struct sockaddr *broadaddr; /* broadcast address for that address */
struct sockaddr *dstaddr; /* P2P destination address for that address */
struct pcap_addr *next;
struct sockaddr *addr; /* address */
struct sockaddr *netmask; /* netmask for that address */
struct sockaddr *broadaddr; /* broadcast address for that address */
struct sockaddr *dstaddr; /* P2P destination address for that address */
};
struct pcap_if {
struct pcap_if *next;
char *name; /* name to hand to "pcap_open_live()" */
char *description; /* textual description of interface, or NULL */
struct pcap_addr *addresses;
bpf_u_int32 flags; /* PCAP_IF_ interface flags */
struct pcap_if *next;
char *name; /* name to hand to "pcap_open_live()" */
char *description; /* textual description of interface, or NULL */
struct pcap_addr *addresses;
bpf_u_int32 flags; /* PCAP_IF_ interface flags */
};
typedef struct pcap_if pcap_if_t;
typedef struct pcap_addr pcap_addr_t;
typedef unsigned char u_char;
#define PCAP_ERRBUF_SIZE 256
#define DLT_NULL 0 /* BSD loopback encapsulation */
#define DLT_EN10MB 1 /* Ethernet (10Mb) */
#define DLT_EN3MB 2 /* Experimental Ethernet (3Mb) */
#define DLT_AX25 3 /* Amateur Radio AX.25 */
#define DLT_PRONET 4 /* Proteon ProNET Token Ring */
#define DLT_CHAOS 5 /* Chaos */
#define DLT_IEEE802 6 /* 802.5 Token Ring */
#define DLT_ARCNET 7 /* ARCNET, with BSD-style header */
#define DLT_SLIP 8 /* Serial Line IP */
#define DLT_PPP 9 /* Point-to-point Protocol */
#define DLT_FDDI 10 /* FDDI */
#define DLT_LINUX_SLL 113
#define DLT_NULL 0 /* BSD loopback encapsulation */
#define DLT_EN10MB 1 /* Ethernet (10Mb) */
#define DLT_EN3MB 2 /* Experimental Ethernet (3Mb) */
#define DLT_AX25 3 /* Amateur Radio AX.25 */
#define DLT_PRONET 4 /* Proteon ProNET Token Ring */
#define DLT_CHAOS 5 /* Chaos */
#define DLT_IEEE802 6 /* 802.5 Token Ring */
#define DLT_ARCNET 7 /* ARCNET, with BSD-style header */
#define DLT_SLIP 8 /* Serial Line IP */
#define DLT_PPP 9 /* Point-to-point Protocol */
#define DLT_FDDI 10 /* FDDI */
#define DLT_LINUX_SLL 113
#define PCAP_NETMASK_UNKNOWN 0xffffffff
#define PCAP_NETMASK_UNKNOWN 0xffffffff
typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *,
const u_char *);
const u_char *);
extern int (*pcap_loop )(pcap_t *, int, pcap_handler, u_char *);
extern int (*pcap_loop)(pcap_t *, int, pcap_handler, u_char *);
extern int (*pcap_breakloop )(pcap_t *);
extern int (*pcap_breakloop)(pcap_t *);
extern pcap_t* (*pcap_create)(const char *, char *);
extern pcap_t *(*pcap_create)(const char *, char *);
extern int (*pcap_set_snaplen) (pcap_t *, int);
extern int (*pcap_set_promisc) (pcap_t *, int);
extern int (*pcap_can_set_rfmon) (pcap_t *);
extern int (*pcap_set_rfmon )(pcap_t *, int);
extern int (*pcap_set_timeout)(pcap_t *, int);
extern int (*pcap_set_buffer_size)(pcap_t *, int);
extern int (*pcap_activate)(pcap_t *);
extern int (*pcap_set_snaplen)(pcap_t *, int);
extern int (*pcap_set_promisc)(pcap_t *, int);
extern int (*pcap_can_set_rfmon)(pcap_t *);
extern int (*pcap_set_rfmon)(pcap_t *, int);
extern int (*pcap_set_timeout)(pcap_t *, int);
extern int (*pcap_set_buffer_size)(pcap_t *, int);
extern int (*pcap_activate)(pcap_t *);
extern int (*pcap_setfilter)(pcap_t *, struct bpf_program *);
extern int (*pcap_setdirection)(pcap_t *, pcap_direction_t);
extern int (*pcap_setfilter)(pcap_t *, struct bpf_program *);
extern int (*pcap_setdirection)(pcap_t *, pcap_direction_t);
extern int (*pcap_datalink)(pcap_t *);
extern int (*pcap_datalink)(pcap_t *);
extern void (*pcap_freecode)(struct bpf_program *);
extern void (*pcap_freecode)(struct bpf_program *);
extern int (*pcap_compile)(pcap_t *, struct bpf_program *, const char *, int,
bpf_u_int32);
extern int (*pcap_compile)(pcap_t *, struct bpf_program *, const char *, int,
bpf_u_int32);
extern char* (*pcap_geterr)(pcap_t *);
extern int (*pcap_sendpacket)(pcap_t *, const u_char *, int);
extern char *(*pcap_geterr)(pcap_t *);
extern int (*pcap_sendpacket)(pcap_t *, const u_char *, int);
extern char* (*pcap_lookupdev)(char *);
extern char *(*pcap_lookupdev)(char *);
extern int (*pcap_findalldevs)(pcap_if_t **, char *);
extern int (*pcap_findalldevs)(pcap_if_t **, char *);
inline int pcap_set_immediate_mode(pcap_t *,int)
{
return 0;
inline int pcap_set_immediate_mode(pcap_t *, int) {
return 0;
}
//#ifdef __cplusplus
//}
//#endif
int init_pcap();

1537
server.cpp
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