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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* $Id: protoco2.h,v 2.2 2001/02/15 16:05:59 gul Exp $
*
* $Log: protoco2.h,v $
* Revision 2.2 2001/02/15 16:05:59 gul
* crypt bugfix
*
* Revision 2.1 2001/02/15 11:03:18 gul
* Added crypt traffic possibility
*
* Revision 2.0 2001/01/10 12:12:38 gul
* Binkd is under CVS again
*
*
*/
/*
binkp's frames:
+---------------------- 0=data block, 1=message(command)
| +---- data block size / msg's argument size
| |
7 6543210 76543210
+-+-------+--------+--- ... ---+
| | HI LO | | -- data block / msg's argument
+-+-------+--------+--- ... ---+
*/
#ifndef _PROTOCO2_H_
#define _PROTOCO2_H_
#define BLK_HDR_SIZE 2
typedef unsigned char t_msg;
#define M_NUL 0 /* Ignored by binkp (data *
optionally Logged) */
#define M_ADR 1
#define M_PWD 2
#define M_FILE 3
#define M_OK 4 /* The password is ok (data *
ignored) */
#define M_EOB 5 /* End-of-batch (data ignored) */
#define M_GOT 6 /* File received */
#define M_ERR 7 /* Misc errors */
#define M_BSY 8 /* All AKAs are busy */
#define M_GET 9 /* Get a file from offset */
#define M_SKIP 10 /* Skip a file */
#define M_MAX 10
typedef struct _BMSG BMSG;
struct _BMSG
{
t_msg t; /* msg type */
int sz; /* msg size */
char *s; /* msg text */
};
/* Protocol's state */
typedef struct _STATE STATE;
struct _STATE
{
SOCKET s;
FTN_NODE *to; /* Dest. address (if an outbound *
connection) */
char expected_pwd[MAXPWDLEN + 1];
/* binkp buffres */
char *obuf;
char *optr; /* Next byte to send */
int oleft; /* Bytes left to send at optr */
char *ibuf;
int isize; /* Current block's size. * -1=expecting block
header */
int iread; /* Number of bytes read already */
int imsg; /* 0=data block, * 1=message(command) */
/* binkp queues and data */
BMSG *msgs; /* Output msg queue */
int n_msgs;
TFILE in, out; /* Files in transfer */
TFILE flo; /* A .?lo in transfer */
TFILE *sent_fls; /* Sent files: waiting for GOT */
int n_sent_fls; /* The number of... */
FTNQ *q; /* Queue */
FTN_ADDR *fa; /* Foreign akas */
int nfa; /* How many... */
int nallfa; /* How many remote akas including busy & n/a */
int maxflvr;
int skip_all_flag; /* We'd skip all */
int r_skipped_flag; /* Remote skipped smthng */
int listed_flag; /* Listed? */
char *inbound; /* The current inbound dir */
char *peer_name; /* Remote host's name */
unsigned long our_ip; /* Local IP */
int io_error;
int msgs_in_batch;
int minor, major; /* Version of remote binkp */
KILLLIST *killlist; /* Files to kill _after_ session */
int n_killlist;
RCVDLIST *rcvdlist; /* List of files rcvd in the curr.batch */
int n_rcvdlist;
/* binkp stats */
int files_sent; /* Files sent/rcvd during the session */
int files_rcvd;
unsigned long bytes_sent;
unsigned long bytes_rcvd;
time_t start_time; /* Start of session */
char sysname[MAXSYSTEMNAME + 1];
char sysop[MAXSYSOPNAME + 1];
char location[MAXLOCATIONNAME + 1];
/* binkp state description */
int local_EOB, remote_EOB;
int GET_FILE_balance; /* Prevent quitting without * waiting for GET
results */
int off_req_sent; /* "M_FILE ... -1" sent, waiting * for M_GET */
int state;
int NR_flag; /* State of binkp when in NR mode */
int ND_flag; /* State of binkp when in ND mode */
int MD_flag; /* State of binkp when in MD mode */
char *MD_challenge; /* Received CRAM challenge data */
int waiting_for_GOT; /* File sent, waiting for M_GOT in ND-mode */
int send_eof; /* Need to send zero-length data block */
char *ND_status; /* ND status file name */
TFILE in_complete; /* M_GOT sent, need to rename */
FTN_ADDR ND_addr; /* Address for current ND status */
FTN_ADDR out_addr; /* Currently precessing remote AKA */
int crypt_flag; /* Is session encrypted? */
unsigned long keys_out[3]; /* Encription keys for outbound */
unsigned long keys_in[3]; /* Encription keys for inbound */
};
#define STATE_DEFINED 1
/*
* Do we have to give up files for this node in this session? We send files if
* send-if-pwd not set or
* it's a secure session or
* it's an outbound session AND they don't skip what we send
*/
#define OK_SEND_FILES(S) \
((send_if_pwd == 0 || (S)->state == P_SECURE || (S)->to) \
&& (S)->r_skipped_flag == 0)
/* state.NR_flag: state of binkp when in NR mode */
#define NO_NR 0
#define WANT_NR 1
#define WE_NR 2
#define THEY_NR 3
/* state.ND_flag: state of binkp when in ND mode */
#define NO_ND 0
#define WE_ND 1
#define THEY_ND 2
#define YES_ND (WE_ND|THEY_ND)
/* state.crypt_flag: state of binkp when in crypt mode */
#define NO_CRYPT 0
#define WE_CRYPT 1
#define THEY_CRYPT 2
#define YES_CRYPT 4
#endif
|
