/* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation Version 1.0 RFCNB Defines Copyright (C) Richard Sharpe 1996 */ /* This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. 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. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* Defines we need */ typedef unsigned short uint16; #define GLOBAL extern #include "rfcnb-error.h" #include "rfcnb-common.h" #include "byteorder.h" #ifdef RFCNB_PORT #define RFCNB_Default_Port RFCNB_PORT #else #define RFCNB_Default_Port 139 #endif #define RFCNB_MAX_STATS 1 /* Protocol defines we need */ #define RFCNB_SESSION_MESSAGE 0 #define RFCNB_SESSION_REQUEST 0x81 #define RFCNB_SESSION_ACK 0x82 #define RFCNB_SESSION_REJ 0x83 #define RFCNB_SESSION_RETARGET 0x84 #define RFCNB_SESSION_KEEP_ALIVE 0x85 /* Structures */ typedef struct redirect_addr * redirect_ptr; struct redirect_addr { struct in_addr ip_addr; int port; redirect_ptr next; }; typedef struct RFCNB_Con { int fd; /* File descripter for TCP/IP connection */ int rfc_errno; /* last error */ int timeout; /* How many milli-secs before IO times out */ int redirects; /* How many times we were redirected */ struct redirect_addr *redirect_list; /* First is first address */ struct redirect_addr *last_addr; } RFCNB_Con; typedef char RFCNB_Hdr[4]; /* The header is 4 bytes long with */ /* char[0] as the type, char[1] the */ /* flags, and char[2..3] the length */ /* Macros to extract things from the header. These are for portability between architecture types where we are worried about byte order */ #define RFCNB_Pkt_Hdr_Len 4 #define RFCNB_Pkt_Sess_Len 72 #define RFCNB_Pkt_Retarg_Len 10 #define RFCNB_Pkt_Nack_Len 5 #define RFCNB_Pkt_Type_Offset 0 #define RFCNB_Pkt_Flags_Offset 1 #define RFCNB_Pkt_Len_Offset 2 /* Length is 2 bytes plus a flag bit */ #define RFCNB_Pkt_N1Len_Offset 4 #define RFCNB_Pkt_Called_Offset 5 #define RFCNB_Pkt_N2Len_Offset 38 #define RFCNB_Pkt_Calling_Offset 39 #define RFCNB_Pkt_Error_Offset 4 #define RFCNB_Pkt_IP_Offset 4 #define RFCNB_Pkt_Port_Offset 8 /* The next macro isolates the length of a packet, including the bit in the flags */ #define RFCNB_Pkt_Len(p) (PVAL(p, 3) | (PVAL(p, 2) << 8) | \ ((PVAL(p, RFCNB_Pkt_Flags_Offset) & 0x01) << 16)) #define RFCNB_Put_Pkt_Len(p, v) (p[1] = ((v >> 16) & 1)); \ (p[2] = ((v >> 8) & 0xFF)); \ (p[3] = (v & 0xFF)); #define RFCNB_Pkt_Type(p) (CVAL(p, RFCNB_Pkt_Type_Offset)) /*typedef struct RFCNB_Hdr { unsigned char type; unsigned char flags; int16 len; } RFCNB_Hdr; typedef struct RFCNB_Sess_Pkt { unsigned char type; unsigned char flags; int16 length; unsigned char n1_len; char called_name[33]; unsigned char n2_len; char calling_name[33]; } RFCNB_Sess_Pkt; typedef struct RFCNB_Nack_Pkt { struct RFCNB_Hdr hdr; unsigned char error; } RFCNB_Nack_Pkt; typedef struct RFCNB_Retarget_Pkt { struct RFCNB_Hdr hdr; int dest_ip; unsigned char port; } RFCNB_Redir_Pkt; */ /* Static variables */ /* Only declare this if not defined */ #ifndef RFCNB_ERRNO extern int RFCNB_errno; extern int RFCNB_saved_errno; /* Save this from point of error */ #endif