1 /* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
6 Copyright (C) Richard Sharpe 1996
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 typedef unsigned short uint16;
32 #include "rfcnb-error.h"
33 #include "rfcnb-common.h"
34 #include "byteorder.h"
37 #define RFCNB_Default_Port RFCNB_PORT
39 #define RFCNB_Default_Port 139
42 #define RFCNB_MAX_STATS 1
44 /* Protocol defines we need */
46 #define RFCNB_SESSION_MESSAGE 0
47 #define RFCNB_SESSION_REQUEST 0x81
48 #define RFCNB_SESSION_ACK 0x82
49 #define RFCNB_SESSION_REJ 0x83
50 #define RFCNB_SESSION_RETARGET 0x84
51 #define RFCNB_SESSION_KEEP_ALIVE 0x85
55 typedef struct redirect_addr * redirect_ptr;
57 struct redirect_addr {
59 struct in_addr ip_addr;
65 typedef struct RFCNB_Con {
67 int fd; /* File descripter for TCP/IP connection */
68 int rfc_errno; /* last error */
69 int timeout; /* How many milli-secs before IO times out */
70 int redirects; /* How many times we were redirected */
71 struct redirect_addr *redirect_list; /* First is first address */
72 struct redirect_addr *last_addr;
76 typedef char RFCNB_Hdr[4]; /* The header is 4 bytes long with */
77 /* char[0] as the type, char[1] the */
78 /* flags, and char[2..3] the length */
80 /* Macros to extract things from the header. These are for portability
81 between architecture types where we are worried about byte order */
83 #define RFCNB_Pkt_Hdr_Len 4
84 #define RFCNB_Pkt_Sess_Len 72
85 #define RFCNB_Pkt_Retarg_Len 10
86 #define RFCNB_Pkt_Nack_Len 5
87 #define RFCNB_Pkt_Type_Offset 0
88 #define RFCNB_Pkt_Flags_Offset 1
89 #define RFCNB_Pkt_Len_Offset 2 /* Length is 2 bytes plus a flag bit */
90 #define RFCNB_Pkt_N1Len_Offset 4
91 #define RFCNB_Pkt_Called_Offset 5
92 #define RFCNB_Pkt_N2Len_Offset 38
93 #define RFCNB_Pkt_Calling_Offset 39
94 #define RFCNB_Pkt_Error_Offset 4
95 #define RFCNB_Pkt_IP_Offset 4
96 #define RFCNB_Pkt_Port_Offset 8
98 /* The next macro isolates the length of a packet, including the bit in the
101 #define RFCNB_Pkt_Len(p) (PVAL(p, 3) | (PVAL(p, 2) << 8) | \
102 ((PVAL(p, RFCNB_Pkt_Flags_Offset) & 0x01) << 16))
104 #define RFCNB_Put_Pkt_Len(p, v) (p[1] = ((v >> 16) & 1)); \
105 (p[2] = ((v >> 8) & 0xFF)); \
108 #define RFCNB_Pkt_Type(p) (CVAL(p, RFCNB_Pkt_Type_Offset))
110 /*typedef struct RFCNB_Hdr {
118 typedef struct RFCNB_Sess_Pkt {
122 unsigned char n1_len;
123 char called_name[33];
124 unsigned char n2_len;
125 char calling_name[33];
129 typedef struct RFCNB_Nack_Pkt {
131 struct RFCNB_Hdr hdr;
136 typedef struct RFCNB_Retarget_Pkt {
138 struct RFCNB_Hdr hdr;
142 } RFCNB_Redir_Pkt; */
144 /* Static variables */
146 /* Only declare this if not defined */
149 extern int RFCNB_errno;
150 extern int RFCNB_saved_errno; /* Save this from point of error */