mirror of
https://github.com/yarrick/iodine.git
synced 2024-11-15 04:49:18 +02:00
434a023afe
CC user.c
user.c:202:15: warning: comparison of unsigned
enum expression < 0 is always false
[-Wtautological-compare]
if (c < 0 || c >= CONN_MAX)
~ ^ ~
146 lines
3.8 KiB
C
146 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 2006-2014 Erik Ekman <yarrick@kryo.se>,
|
|
* 2006-2009 Bjorn Andersson <flex@kryo.se>
|
|
*
|
|
* Permission to use, copy, modify, and/or 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__
|
|
|
|
/* Last byte of raw header is the command */
|
|
#define RAW_HDR_LEN 4
|
|
#define RAW_HDR_IDENT_LEN 3
|
|
#define RAW_HDR_CMD 3
|
|
#define RAW_HDR_CMD_LOGIN 0x10
|
|
#define RAW_HDR_CMD_DATA 0x20
|
|
#define RAW_HDR_CMD_PING 0x30
|
|
|
|
#define RAW_HDR_CMD_MASK 0xF0
|
|
#define RAW_HDR_USR_MASK 0x0F
|
|
#define RAW_HDR_GET_CMD(x) ((x)[RAW_HDR_CMD] & RAW_HDR_CMD_MASK)
|
|
#define RAW_HDR_GET_USR(x) ((x)[RAW_HDR_CMD] & RAW_HDR_USR_MASK)
|
|
extern const unsigned char raw_header[RAW_HDR_LEN];
|
|
|
|
#ifdef WINDOWS32
|
|
#include "windows.h"
|
|
#else
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <err.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
|
|
#define DNS_PORT 53
|
|
|
|
#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
|
|
|
|
#if defined IP_MTU_DISCOVER
|
|
/* Linux */
|
|
# define IP_OPT_DONT_FRAG IP_MTU_DISCOVER
|
|
# define DONT_FRAG_VALUE IP_PMTUDISC_DO
|
|
#elif defined IP_DONTFRAG
|
|
/* FreeBSD */
|
|
# define IP_OPT_DONT_FRAG IP_DONTFRAG
|
|
# define DONT_FRAG_VALUE 1
|
|
#elif defined IP_DONTFRAGMENT
|
|
/* Winsock2 */
|
|
# define IP_OPT_DONT_FRAG IP_DONTFRAGMENT
|
|
# define DONT_FRAG_VALUE 1
|
|
#endif
|
|
|
|
#define T_PRIVATE 65399
|
|
/* Undefined RR type; "private use" range, see http://www.bind9.net/dns-parameters */
|
|
#define T_UNSET 65432
|
|
/* Unused RR type, never actually sent */
|
|
|
|
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 rcode;
|
|
unsigned short id;
|
|
struct in_addr destination;
|
|
struct sockaddr_storage from;
|
|
int fromlen;
|
|
unsigned short id2;
|
|
struct sockaddr from2;
|
|
int fromlen2;
|
|
};
|
|
|
|
enum connection {
|
|
CONN_RAW_UDP = 0,
|
|
CONN_DNS_NULL,
|
|
CONN_MAX
|
|
};
|
|
|
|
void check_superuser(void (*usage_fn)(void));
|
|
char *format_addr(struct sockaddr_storage *sockaddr, int sockaddr_len);
|
|
int get_addr(char *, int, int, int, struct sockaddr_storage *);
|
|
int open_dns(struct sockaddr_storage *, size_t);
|
|
int open_dns_from_host(char *host, int port, int addr_family, int flags);
|
|
void close_dns(int);
|
|
|
|
void do_chroot(char *);
|
|
void do_setcon(char *);
|
|
void do_detach();
|
|
void do_pidfile(char *);
|
|
|
|
void read_password(char*, size_t);
|
|
|
|
int check_topdomain(char *, char **);
|
|
|
|
#if defined(WINDOWS32) || defined(ANDROID)
|
|
#ifndef ANDROID
|
|
int inet_aton(const char *cp, struct in_addr *inp);
|
|
#endif
|
|
|
|
void err(int eval, const char *fmt, ...);
|
|
void warn(const char *fmt, ...);
|
|
void errx(int eval, const char *fmt, ...);
|
|
void warnx(const char *fmt, ...);
|
|
#endif
|
|
|
|
int recent_seqno(int , int);
|
|
|
|
#ifndef WINDOWS32
|
|
void fd_set_close_on_exec(int fd);
|
|
#endif
|
|
|
|
#endif
|