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/* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
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* Copyright (C) Richard Sharpe 1996
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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int RFCNB_saved_errno = 0;
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#include "std-includes.h"
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#include <netinet/tcp.h>
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#include "rfcnb-priv.h"
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#include "rfcnb-util.h"
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int RFCNB_Stats[RFCNB_MAX_STATS];
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void (*Prot_Print_Routine) () = NULL; /* Pointer to print routine */
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/* Set up a session with a remote name. We are passed Called_Name as a
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* string which we convert to a NetBIOS name, ie space terminated, up to
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* 16 characters only if we need to. If Called_Address is not empty, then
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* we use it to connect to the remote end, but put in Called_Name ... Called
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* Address can be a DNS based name, or a TCP/IP address ...
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RFCNB_Call(char *Called_Name, char *Calling_Name, char *Called_Address,
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struct RFCNB_Con *con;
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struct in_addr Dest_IP;
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struct redirect_addr *redir_addr;
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char *Service_Address;
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/* Now, we really should look up the port in /etc/services ... */
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port = RFCNB_Default_Port;
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/* Create a connection structure first */
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if ((con = (struct RFCNB_Con *) malloc(sizeof(struct RFCNB_Con))) == NULL) { /* Error in size */
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RFCNB_errno = RFCNBE_NoSpace;
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RFCNB_saved_errno = errno;
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con->fd = -0; /* no descriptor yet */
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con->rfc_errno = 0; /* no error yet */
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con->timeout = 0; /* no timeout */
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con->redirect_list = NULL; /* Fix bug still in version 0.50 */
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/* Resolve that name into an IP address */
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Service_Address = Called_Name;
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if (strcmp(Called_Address, "") != 0) { /* If the Called Address = "" */
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Service_Address = Called_Address;
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if ((errno = RFCNB_Name_To_IP(Service_Address, &Dest_IP)) < 0) { /* Error */
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/* No need to modify RFCNB_errno as it was done by RFCNB_Name_To_IP */
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/* Now connect to the remote end */
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redirect = TRUE; /* Fudge this one so we go once through */
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while (redirect) { /* Connect and get session info etc */
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redirect = FALSE; /* Assume all OK */
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/* Build the redirect info. First one is first addr called */
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/* And tack it onto the list of addresses we called */
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if ((redir_addr = (struct redirect_addr *) malloc(sizeof(struct redirect_addr))) == NULL) { /* Could not get space */
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RFCNB_errno = RFCNBE_NoSpace;
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RFCNB_saved_errno = errno;
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memcpy((char *) &(redir_addr->ip_addr), (char *) &Dest_IP, sizeof(Dest_IP));
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redir_addr->port = port;
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redir_addr->next = NULL;
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if (con->redirect_list == NULL) { /* Stick on head */
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con->redirect_list = con->last_addr = redir_addr;
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con->last_addr->next = redir_addr;
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con->last_addr = redir_addr;
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/* Now, make that connection */
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if ((Client = RFCNB_IP_Connect(Dest_IP, port)) < 0) { /* Error */
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/* No need to modify RFCNB_errno as it was done by RFCNB_IP_Connect */
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/* Now send and handle the RFCNB session request */
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/* If we get a redirect, we will comeback with redirect true
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* and a new IP address in DEST_IP */
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if ((errno = RFCNB_Session_Req(con,
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&redirect, &Dest_IP, &port)) < 0) {
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/* No need to modify RFCNB_errno as it was done by RFCNB_Session.. */
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/* We have to close the connection, and then try again */
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RFCNB_Close(con->fd); /* Close it */
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/* We send a packet to the other end ... for the moment, we treat the
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* data as a series of pointers to blocks of data ... we should check the
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RFCNB_Send(struct RFCNB_Con *Con_Handle, struct RFCNB_Pkt *udata, int Length)
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struct RFCNB_Pkt *pkt;
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/* Plug in the header and send the data */
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pkt = RFCNB_Alloc_Pkt(RFCNB_Pkt_Hdr_Len);
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RFCNB_errno = RFCNBE_NoSpace;
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RFCNB_saved_errno = errno;
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pkt->next = udata; /* The user data we want to send */
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/* Following crap is for portability across multiple UNIX machines */
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*(hdr + RFCNB_Pkt_Type_Offset) = RFCNB_SESSION_MESSAGE;
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RFCNB_Put_Pkt_Len(hdr, Length);
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fprintf(stderr, "Sending packet: ");
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if ((len = RFCNB_Put_Pkt(Con_Handle, pkt, Length + RFCNB_Pkt_Hdr_Len)) < 0) {
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/* No need to change RFCNB_errno as it was done by put_pkt ... */
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return (RFCNBE_Bad); /* Should be able to write that lot ... */
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/* Now we have sent that lot, let's get rid of the RFCNB Header and return */
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/* We pick up a message from the internet ... We have to worry about
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* non-message packets ... */
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RFCNB_Recv(void *con_Handle, struct RFCNB_Pkt *Data, int Length)
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struct RFCNB_Pkt *pkt;
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if (con_Handle == NULL) {
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RFCNB_errno = RFCNBE_BadHandle;
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RFCNB_saved_errno = errno;
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/* Now get a packet from below. We allocate a header first */
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/* Plug in the header and send the data */
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pkt = RFCNB_Alloc_Pkt(RFCNB_Pkt_Hdr_Len);
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RFCNB_errno = RFCNBE_NoSpace;
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RFCNB_saved_errno = errno;
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pkt->next = Data; /* Plug in the data portion */
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if ((ret_len = RFCNB_Get_Pkt(con_Handle, pkt, Length + RFCNB_Pkt_Hdr_Len)) < 0) {
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fprintf(stderr, "Bad packet return in RFCNB_Recv... \n");
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/* We should check that we go a message and not a keep alive */
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/* We just disconnect from the other end, as there is nothing in the RFCNB */
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/* protocol that specifies any exchange as far as I can see */
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RFCNB_Hangup(struct RFCNB_Con *con_Handle)
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if (con_Handle != NULL) {
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RFCNB_Close(con_Handle->fd); /* Could this fail? */
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/* Set TCP_NODELAY on the socket */
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RFCNB_Set_Sock_NoDelay(struct RFCNB_Con *con_Handle, BOOL yn)
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return (setsockopt(con_Handle->fd, IPPROTO_TCP, TCP_NODELAY,
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(char *) &yn, sizeof(yn)));
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/* Listen for a connection on a port???, when */
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/* the connection comes in, we return with the connection */
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/* Pick up the last error response as a string, hmmm, this routine should */
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/* have been different ... */
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RFCNB_Get_Error(char *buffer, int buf_len)
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if (RFCNB_saved_errno <= 0) {
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sprintf(buffer, "%s", RFCNB_Error_Strings[RFCNB_errno]);
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sprintf(buffer, "%s\n\terrno:%s", RFCNB_Error_Strings[RFCNB_errno],
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strerror(RFCNB_saved_errno));
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/* Pick up the last error response and returns as a code */
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RFCNB_Get_Last_Error()
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return (RFCNB_errno);
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/* Pick up saved errno as well */
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RFCNB_Get_Last_Errno()
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return (RFCNB_saved_errno);
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/* Pick up the last error response and return in string ... */
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RFCNB_Get_Error_Msg(int code, char *msg_buf, int len)
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strncpy(msg_buf, RFCNB_Error_Strings[abs(code)], len);
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/* Register a higher level protocol print routine */
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RFCNB_Register_Print_Routine(void (*fn) ())
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Prot_Print_Routine = fn;
added
removed
helpers/basic_auth/MSNT/session.c
