iodine/src/common.h
2012-02-04 20:33:59 +01:00

71 lines
1.9 KiB
C

/*
* Copyright (c) 2006-2009 Bjorn Andersson <flex@kryo.se>, Erik Ekman <yarrick@kryo.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __COMMON_H__
#define __COMMON_H__
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#ifndef MIN
#define MIN(a,b) ((a)<(b)?(a):(b))
#endif
#ifndef MAX
#define MAX(a,b) ((a)>(b)?(a):(b))
#endif
#define QUERY_NAME_SIZE 256
#if defined IP_RECVDSTADDR
# define DSTADDR_SOCKOPT IP_RECVDSTADDR
# define dstaddr(x) ((struct in_addr *) CMSG_DATA(x))
#elif defined IP_PKTINFO
# define DSTADDR_SOCKOPT IP_PKTINFO
# define dstaddr(x) (&(((struct in_pktinfo *)(CMSG_DATA(x)))->ipi_addr))
#endif
struct packet
{
int len; /* Total packet length */
int sentlen; /* Length of chunk currently transmitted */
int offset; /* Current offset */
char data[64*1024]; /* The data */
char seqno; /* The packet sequence number */
char fragment; /* Fragment index */
};
struct query {
char name[QUERY_NAME_SIZE];
unsigned short type;
unsigned short id;
struct in_addr destination;
struct sockaddr from;
int fromlen;
};
int open_dns(int, in_addr_t);
void close_dns(int);
void do_chroot(char *);
void do_detach();
void read_password(char*, size_t);
int check_topdomain(char *);
#endif