esocks/def.h at master · ablce9/esocks · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
/*
 * Use of this source code is governed by a
 * license that can be found in the LICENSE file.
 *
 *
 */


#ifndef esocks_def_h
#define esocks_def_h

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <openssl/evp.h>

#include <event2/bufferevent.h>
#include <event2/buffer.h>
#include <event2/event.h>
#include <event2/util.h>

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdbool.h>
#include <time.h>

# define u64 ev_uint64_t
# define u32 ev_uint32_t
# define u16 ev_uint16_t
# define u8   ev_uint8_t

/* simple debug mode */
#ifndef DEBUG
# define  DEBUG 0
#endif

#if defined DEBUG
# define ASSERT(exp) assert(exp)
#else
# define ASSERT(exp)
#endif

/* socks version  */
#define SOCKS_VERSION      0x05
#define NO_AUTHENTICATION  0x00

#define SOCKS_MAX_BUFFER_SIZE 4096

struct settings {
    struct socksaddr_in *proxy;
    int                  connection_timeout;
    const char *listen_addr;
    short                listen_port;
    const char *server_addr;
    short                server_port;
    int                  workers;
    _Bool                relay_mode;
    const char *nameserver;
    const char *resolv_conf;
    int                  rate_rlimit;
    int                  rate_wlimit;
    const char *cipher_name;

    const EVP_MD *dgst;

    const EVP_CIPHER *cipher;
    const u8 *iv;
    const u8 *key;
    u8 *passphrase;
    int                  plen;
    long                 dns_cache_tval;
    _Bool                daemon_mode;
    const char *config_file;
    const char *pid_file;
};

extern struct settings settings;

typedef enum {
    SUCCEEDED = 0,
    GENERAL_FAILURE,
    METHOD_NOT_ALLOWED,
    NETWORK_UNREACHABLE,
    HOST_UNREACHABLE,
    CONNECTION_REFUSED,
    TTL_EXPIRED,
    METHOD_NOT_SUPPORTED,
    ADDRESS_TYPE_NOT_SUPPORTED,
    UNASSIGNED
} socks_reply_e;  /* server replies */

/* address type */
# define IPV4    1
# define DOMAINN 3
# define IPV6    4

# define SOCKS_INET_ADDRSTRLEN  (sizeof("255.255.255.255") - 1)
# define SOCKS_INET6_ADDRSTRLEN						\
    (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") - 1)

#endif