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/* tsocks.h - Structures used by tsocks to form SOCKS requests */
#ifndef _TSOCKS_H
#define _TSOCKS_H 1
#include <parser.h>
/* Structure representing a socks connection request */
struct sockreq {
int8_t version;
int8_t command;
int16_t dstport;
int32_t dstip;
/* A null terminated username goes here */
};
/* Structure representing a socks connection request response */
struct sockrep {
int8_t version;
int8_t result;
int16_t ignore1;
int32_t ignore2;
};
/* Structure representing a socket which we are currently proxying */
struct connreq {
/* Information about the socket and target */
int sockid;
struct sockaddr_in connaddr;
struct sockaddr_in serveraddr;
/* Pointer to the config entry for the socks server */
struct serverent *path;
/* Current state of this proxied socket */
int state;
/* Next state to go to when the send or receive is finished */
int nextstate;
/* When connections fail but an error number cannot be reported
* because the socket is non blocking we keep the connreq struct until
* the status is queried with connect() again, we then return
* this value */
int err;
/* Events that were set for this socket upon call to select() or
* poll() */
int selectevents;
/* Buffer for sending and receiving on the socket */
int datalen;
int datadone;
char buffer[1024];
struct connreq *next;
};
/* Connection statuses */
#define UNSTARTED 0
#define CONNECTING 1
#define CONNECTED 2
#define SENDING 3
#define RECEIVING 4
#define SENTV4REQ 5
#define GOTV4REQ 6
#define SENTV5METHOD 7
#define GOTV5METHOD 8
#define SENTV5AUTH 9
#define GOTV5AUTH 10
#define SENTV5CONNECT 11
#define GOTV5CONNECT 12
#define DONE 13
#define FAILED 14
/* Flags to indicate what events a socket was select()ed for */
#define READ (1<<0)
#define WRITE (1<<1)
#define EXCEPT (1<<2)
#define READWRITE (READ|WRITE)
#define READWRITEEXCEPT (READ|WRITE|EXCEPT)
#endif
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