140 lines
2.7 KiB
C
140 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#ifndef __EAD_H
|
|
#define __EAD_H
|
|
|
|
#define EAD_DEBUGLEVEL 1
|
|
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
|
|
#ifndef MAXSALTLEN
|
|
#define MAXSALTLEN 32
|
|
#endif
|
|
|
|
#define EAD_PORT 56026UL
|
|
#define EAD_MAGIC 3671771902UL
|
|
#define EAD_CMD_TIMEOUT 10
|
|
|
|
#define EAD_MAX_IV_INCR 128
|
|
|
|
/* request/response types */
|
|
/* response id == request id + 1 */
|
|
enum ead_type {
|
|
EAD_TYPE_PING,
|
|
EAD_TYPE_PONG,
|
|
|
|
EAD_TYPE_SET_USERNAME,
|
|
EAD_TYPE_ACK_USERNAME,
|
|
|
|
EAD_TYPE_GET_PRIME,
|
|
EAD_TYPE_PRIME,
|
|
|
|
EAD_TYPE_SEND_A,
|
|
EAD_TYPE_SEND_B,
|
|
|
|
EAD_TYPE_SEND_AUTH,
|
|
EAD_TYPE_DONE_AUTH,
|
|
|
|
EAD_TYPE_SEND_CMD,
|
|
EAD_TYPE_RESULT_CMD,
|
|
|
|
EAD_TYPE_LAST
|
|
};
|
|
|
|
enum ead_auth_type {
|
|
EAD_AUTH_DEFAULT,
|
|
EAD_AUTH_MD5
|
|
};
|
|
|
|
enum ead_cmd_type {
|
|
EAD_CMD_NORMAL,
|
|
EAD_CMD_BACKGROUND,
|
|
EAD_CMD_LAST
|
|
};
|
|
|
|
struct ead_msg_pong {
|
|
uint16_t auth_type;
|
|
char name[];
|
|
} __attribute__((packed));
|
|
|
|
struct ead_msg_number {
|
|
uint8_t id;
|
|
unsigned char data[];
|
|
} __attribute__((packed));
|
|
|
|
struct ead_msg_salt {
|
|
uint8_t prime;
|
|
uint8_t len;
|
|
unsigned char salt[MAXSALTLEN];
|
|
unsigned char ext_salt[MAXSALTLEN];
|
|
} __attribute__((packed));
|
|
|
|
struct ead_msg_user {
|
|
char username[32];
|
|
} __attribute__((packed));
|
|
|
|
struct ead_msg_auth {
|
|
unsigned char data[20];
|
|
} __attribute__((packed));
|
|
|
|
struct ead_msg_cmd {
|
|
uint8_t type;
|
|
uint16_t timeout;
|
|
unsigned char data[];
|
|
} __attribute__((packed));
|
|
|
|
struct ead_msg_cmd_data {
|
|
uint8_t done;
|
|
unsigned char data[];
|
|
} __attribute__((packed));
|
|
|
|
struct ead_msg_encrypted {
|
|
uint32_t hash[5];
|
|
uint32_t iv;
|
|
uint8_t pad;
|
|
union {
|
|
struct ead_msg_cmd cmd;
|
|
struct ead_msg_cmd_data cmd_data;
|
|
} data[];
|
|
} __attribute__((packed));
|
|
|
|
|
|
#define EAD_DATA(_msg, _type) (&((_msg)->data[0]._type))
|
|
#define EAD_ENC_DATA(_msg, _type) (&((_msg)->data[0].enc.data[0]._type))
|
|
|
|
/* for ead_msg::sid */
|
|
#define EAD_INSTANCE_MASK 0xf000
|
|
#define EAD_INSTANCE_SHIFT 12
|
|
|
|
struct ead_msg {
|
|
uint32_t magic;
|
|
uint32_t len;
|
|
uint32_t type;
|
|
uint16_t nid; /* node id */
|
|
uint16_t sid; /* session id */
|
|
uint32_t ip; /* source ip for responses from the server */
|
|
union {
|
|
struct ead_msg_pong pong;
|
|
struct ead_msg_user user;
|
|
struct ead_msg_number number;
|
|
struct ead_msg_auth auth;
|
|
struct ead_msg_salt salt;
|
|
struct ead_msg_encrypted enc;
|
|
} data[];
|
|
} __attribute__((packed));
|
|
|
|
|
|
#endif
|