lib/rfcnb/rfcnb-priv.h

   1 /*
   2  * Copyright (C) 1996-2014 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
  10  *
  11  * Version 1.0
  12  * RFCNB Defines
  13  *
  14  * Copyright (C) Richard Sharpe 1996
  15  */
  16
  17 /*
  18  * This program is free software; you can redistribute it and/or modify
  19  * it under the terms of the GNU General Public License as published by
  20  * the Free Software Foundation; either version 2 of the License, or
  21  * (at your option) any later version.
  22  *
  23  * This program is distributed in the hope that it will be useful,
  24  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26  * GNU General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License
  29  * along with this program; if not, write to the Free Software
  30  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  31  */
  32
  33 #ifndef _RFCNB_RFCNB_PRIV_H
  34 #define _RFCNB_RFCNB_PRIV_H
  35
  36 /* Defines we need */
  37
  38 typedef unsigned short uint16;
  39
  40 #define GLOBAL extern
  41
  42 #include "rfcnb/byteorder.h"
  43 #include "rfcnb/rfcnb-common.h"
  44 #include "rfcnb/rfcnb-error.h"
  45
  46 #if HAVE_NETINET_IN_H
  47 #include <netinet/in.h>
  48 #endif
  49
  50 #ifdef RFCNB_PORT
  51 #define RFCNB_Default_Port RFCNB_PORT
  52 #else
  53 #define RFCNB_Default_Port 139
  54 #endif
  55
  56 #define RFCNB_MAX_STATS 1
  57
  58 /* Protocol defines we need */
  59
  60 #define RFCNB_SESSION_MESSAGE 0
  61 #define RFCNB_SESSION_REQUEST 0x81
  62 #define RFCNB_SESSION_ACK 0x82
  63 #define RFCNB_SESSION_REJ 0x83
  64 #define RFCNB_SESSION_RETARGET 0x84
  65 #define RFCNB_SESSION_KEEP_ALIVE 0x85
  66
  67 /* Structures      */
  68
  69 typedef struct redirect_addr *redirect_ptr;
  70
  71 struct redirect_addr {
  72
  73     struct in_addr ip_addr;
  74     int port;
  75     redirect_ptr next;
  76
  77 };
  78
  79 typedef struct RFCNB_Con {
  80
  81     int fd;                     /* File descripter for TCP/IP connection */
  82     int errn;                   /* last error                            */
  83     int timeout;                /* How many milli-secs before IO times out */
  84     int redirects;              /* How many times we were redirected     */
  85     struct redirect_addr *redirect_list;        /* First is first address */
  86     struct redirect_addr *last_addr;
  87
  88 } RFCNB_Con;
  89
  90 typedef char RFCNB_Hdr[4];      /* The header is 4 bytes long with  */
  91 /* char[0] as the type, char[1] the */
  92 /* flags, and char[2..3] the length */
  93
  94 /* Macros to extract things from the header. These are for portability
  95  * between architecture types where we are worried about byte order     */
  96
  97 #define RFCNB_Pkt_Hdr_Len        4
  98 #define RFCNB_Pkt_Sess_Len       72
  99 #define RFCNB_Pkt_Retarg_Len     10
 100 #define RFCNB_Pkt_Nack_Len       5
 101 #define RFCNB_Pkt_Type_Offset    0
 102 #define RFCNB_Pkt_Flags_Offset   1
 103 #define RFCNB_Pkt_Len_Offset     2      /* Length is 2 bytes plus a flag bit */
 104 #define RFCNB_Pkt_N1Len_Offset   4
 105 #define RFCNB_Pkt_Called_Offset  5
 106 #define RFCNB_Pkt_N2Len_Offset   38
 107 #define RFCNB_Pkt_Calling_Offset 39
 108 #define RFCNB_Pkt_Error_Offset   4
 109 #define RFCNB_Pkt_IP_Offset      4
 110 #define RFCNB_Pkt_Port_Offset    8
 111
 112 /* The next macro isolates the length of a packet, including the bit in the
 113  * flags                                                                   */
 114
 115 #define RFCNB_Pkt_Len(p)  (PVAL((p), 3) | (PVAL((p), 2) << 8) |     \
 116                           ((PVAL((p), RFCNB_Pkt_Flags_Offset) & 0x01) << 16))
 117
 118 #define RFCNB_Put_Pkt_Len(p, v) ((p)[1] = (((v) >> 16) & 1)); \
 119                                 ((p)[2] = (((v) >> 8) & 0xFF)); \
 120                                 ((p)[3] = ((v) & 0xFF));
 121
 122 #define RFCNB_Pkt_Type(p) (CVAL((p), RFCNB_Pkt_Type_Offset))
 123
 124 #if UNUSED_CODE
 125 typedef struct RFCNB_Hdr {
 126     unsigned char type;
 127     unsigned char flags;
 128     int16 len;
 129 } RFCNB_Hdr;
 130
 131 typedef struct RFCNB_Sess_Pkt {
 132     unsigned char type;
 133     unsigned char flags;
 134     int16 length;
 135     unsigned char n1_len;
 136     char called_name[33];
 137     unsigned char n2_len;
 138     char calling_name[33];
 139 } RFCNB_Sess_Pkt;
 140
 141 typedef struct RFCNB_Nack_Pkt {
 142     struct RFCNB_Hdr hdr;
 143     unsigned char error;
 144 } RFCNB_Nack_Pkt;
 145
 146 typedef struct RFCNB_Retarget_Pkt {
 147     struct RFCNB_Hdr hdr;
 148     int dest_ip;
 149     unsigned char port;
 150 } RFCNB_Redir_Pkt;
 151 #endif /* UNUSED_CODE */
 152
 153 /* Static variables */
 154
 155 /* Only declare this if not defined */
 156
 157 #ifndef RFCNB_ERRNO
 158 extern int RFCNB_errno;
 159 extern int RFCNB_saved_errno;   /* Save this from point of error */
 160 #endif
 161
 162 #endif /* _RFCNB_RFCNB_PRIV_H */
 163