/*************************************************************************** core.h - description ------------------- begin : Tue May 14 2002 copyright : netcreature (C) 2002 email : netcreature@users.sourceforge.net *************************************************************************** *************************************************************************** * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * ***************************************************************************/ #include #include #include #include #include #ifndef __CORE_HEADER #define __CORE_HEADER #define BUFF_SIZE 8*1024 // used to read responses from proxies. #define MAX_LOCALNET 64 typedef union { unsigned char octet[4]; uint32_t as_int; } ip_type; typedef struct { uint32_t hash; char* string; } string_hash_tuple; typedef struct { uint32_t counter; uint32_t capa; string_hash_tuple** list; } internal_ip_lookup_table; extern internal_ip_lookup_table internal_ips; #ifdef THREAD_SAFE #include extern pthread_mutex_t internal_ips_lock; extern pthread_mutex_t hostdb_lock; # define MUTEX_LOCK(x) pthread_mutex_lock(x) # define MUTEX_UNLOCK(x) pthread_mutex_unlock(x) # define MUTEX_INIT(x,y) pthread_mutex_init(x, y) #else # define MUTEX_LOCK(x) # define MUTEX_UNLOCK(x) # define MUTEX_INIT(x,y) #endif /*error codes*/ typedef enum { SUCCESS=0, MEMORY_FAIL, // malloc failed SOCKET_ERROR, // look errno for more CHAIN_DOWN, // no proxy in chain responds to tcp CHAIN_EMPTY, // if proxy_count = 0 BLOCKED // target's port blocked on last proxy in the chain } ERR_CODE; typedef enum { HTTP_TYPE, SOCKS4_TYPE, SOCKS5_TYPE } proxy_type; typedef enum { DYNAMIC_TYPE, STRICT_TYPE, RANDOM_TYPE} chain_type; typedef enum { PLAY_STATE, DOWN_STATE, BLOCKED_STATE, BUSY_STATE } proxy_state; typedef enum { RANDOMLY, FIFOLY } select_type; typedef struct { struct in_addr in_addr, netmask; unsigned short port; } localaddr_arg; typedef struct { ip_type ip; unsigned short port; proxy_type pt; proxy_state ps; char user[256]; char pass[256]; } proxy_data; int connect_proxy_chain (int sock, ip_type target_ip, unsigned short target_port, proxy_data * pd, unsigned int proxy_count, chain_type ct, unsigned int max_chain ); void proxychains_write_log(char *str, ...); typedef int (*connect_t)(int, const struct sockaddr *, socklen_t); typedef struct hostent* (*gethostbyname_t)(const char *); typedef int (*freeaddrinfo_t)(struct addrinfo *); typedef struct hostent *(*gethostbyaddr_t) (const void *, socklen_t, int); typedef int (*getaddrinfo_t)(const char *, const char *, const struct addrinfo *, struct addrinfo **); typedef int (*getnameinfo_t) (const struct sockaddr *, socklen_t, char *, socklen_t, char *, socklen_t, int); extern connect_t true_connect; extern gethostbyname_t true_gethostbyname; extern getaddrinfo_t true_getaddrinfo; extern freeaddrinfo_t true_freeaddrinfo; extern getnameinfo_t true_getnameinfo; extern gethostbyaddr_t true_gethostbyaddr; struct gethostbyname_data { struct hostent hostent_space; in_addr_t resolved_addr; char *resolved_addr_p[2]; char addr_name[1024 * 8]; }; struct hostent* proxy_gethostbyname(const char *name, struct gethostbyname_data *data); int proxy_getaddrinfo(const char *node, const char *service, const struct addrinfo *hints, struct addrinfo **res); void proxy_freeaddrinfo(struct addrinfo *res); void pc_stringfromipv4(unsigned char *ip_buf_4_bytes, char *outbuf_16_bytes); #ifdef DEBUG # define PDEBUG(fmt, args...) do { fprintf(stderr,"DEBUG:"fmt, ## args); fflush(stderr); } while(0) #else # define PDEBUG(fmt, args...) do {} while (0) #endif #endif //RcB: DEP "core.c" //RcB: DEP "libproxychains.c" //RcB: LINK "-Wl,--no-as-needed -ldl -lpthread"