Initial Import

12 files changed, 1854 insertions, 0 deletions

diff --git a/daemon/rfcnb/byteorder.h b/daemon/rfcnb/byteorder.h
new file mode 100644
index 0000000..2dae575
--- /dev/null
+++ b/daemon/rfcnb/byteorder.h
@@ -0,0 +1,80 @@
+/*
+   Unix SMB/Netbios implementation.
+   Version 1.9.
+   SMB Byte handling
+   Copyright (C) Andrew Tridgell 1992-1995
+
+   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.
+*/
+
+/*
+   This file implements macros for machine independent short and
+   int manipulation
+*/
+
+#undef CAREFUL_ALIGNMENT
+
+/* we know that the 386 can handle misalignment and has the "right"
+   byteorder */
+#ifdef __i386__
+#define CAREFUL_ALIGNMENT 0
+#endif
+
+#ifndef CAREFUL_ALIGNMENT
+#define CAREFUL_ALIGNMENT 1
+#endif
+
+#define CVAL(buf,pos) (((unsigned char *)(buf))[pos])
+#define PVAL(buf,pos) ((unsigned)CVAL(buf,pos))
+#define SCVAL(buf,pos,val) (CVAL(buf,pos) = (val))
+
+
+#if CAREFUL_ALIGNMENT
+#define SVAL(buf,pos) (PVAL(buf,pos)|PVAL(buf,(pos)+1)<<8)
+#define IVAL(buf,pos) (SVAL(buf,pos)|SVAL(buf,(pos)+2)<<16)
+#define SSVALX(buf,pos,val) (CVAL(buf,pos)=(val)&0xFF,CVAL(buf,pos+1)=(val)>>8)
+#define SIVALX(buf,pos,val) (SSVALX(buf,pos,val&0xFFFF),SSVALX(buf,pos+2,val>>16))
+#define SVALS(buf,pos) ((int16)SVAL(buf,pos))
+#define IVALS(buf,pos) ((int32)IVAL(buf,pos))
+#define SSVAL(buf,pos,val) SSVALX((buf),(pos),((uint16)(val)))
+#define SIVAL(buf,pos,val) SIVALX((buf),(pos),((uint32)(val)))
+#define SSVALS(buf,pos,val) SSVALX((buf),(pos),((int16)(val)))
+#define SIVALS(buf,pos,val) SIVALX((buf),(pos),((int32)(val)))
+#else
+/* this handles things for architectures like the 386 that can handle
+   alignment errors */
+/*
+   WARNING: This section is dependent on the length of int16 and int32
+   being correct
+*/
+#define SVAL(buf,pos) (*(uint16 *)((char *)(buf) + (pos)))
+#define IVAL(buf,pos) (*(uint32 *)((char *)(buf) + (pos)))
+#define SVALS(buf,pos) (*(int16 *)((char *)(buf) + (pos)))
+#define IVALS(buf,pos) (*(int32 *)((char *)(buf) + (pos)))
+#define SSVAL(buf,pos,val) SVAL(buf,pos)=((uint16)(val))
+#define SIVAL(buf,pos,val) IVAL(buf,pos)=((uint32)(val))
+#define SSVALS(buf,pos,val) SVALS(buf,pos)=((int16)(val))
+#define SIVALS(buf,pos,val) IVALS(buf,pos)=((int32)(val))
+#endif
+
+
+/* now the reverse routines - these are used in nmb packets (mostly) */
+#define SREV(x) ((((x)&0xFF)<<8) | (((x)>>8)&0xFF))
+#define IREV(x) ((SREV(x)<<16) | (SREV((x)>>16)))
+
+#define RSVAL(buf,pos) SREV(SVAL(buf,pos))
+#define RIVAL(buf,pos) IREV(IVAL(buf,pos))
+#define RSSVAL(buf,pos,val) SSVAL(buf,pos,SREV(val))
+#define RSIVAL(buf,pos,val) SIVAL(buf,pos,IREV(val))
diff --git a/daemon/rfcnb/rfcnb-common.h b/daemon/rfcnb/rfcnb-common.h
new file mode 100644
index 0000000..0d7d5dd
--- /dev/null
+++ b/daemon/rfcnb/rfcnb-common.h
@@ -0,0 +1,36 @@
+/* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
+
+   Version 1.0
+   RFCNB Common Structures etc 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.
+*/
+
+/* A data structure we need */
+
+typedef struct RFCNB_Pkt {
+
+  char * data;			/* The data in this portion */
+  int len;
+  struct RFCNB_Pkt *next;
+
+} RFCNB_Pkt;
+
+
diff --git a/daemon/rfcnb/rfcnb-error.h b/daemon/rfcnb/rfcnb-error.h
new file mode 100644
index 0000000..bb49d68
--- /dev/null
+++ b/daemon/rfcnb/rfcnb-error.h
@@ -0,0 +1,75 @@
+/* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
+
+   Version 1.0
+   RFCNB Error Response 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.
+*/
+
+/* Error responses */
+
+#define RFCNBE_Bad -1          /* Bad response */
+#define RFCNBE_OK 0
+
+/* these should follow the spec ... is there one ?*/
+
+#define RFCNBE_NoSpace 1       /* Could not allocate space for a struct */
+#define RFCNBE_BadName 2       /* Could not translate a name            */
+#define RFCNBE_BadRead 3       /* Read sys call failed                  */
+#define RFCNBE_BadWrite 4      /* Write Sys call failed                 */
+#define RFCNBE_ProtErr 5       /* Protocol Error                        */
+#define RFCNBE_ConGone 6       /* Connection dropped                    */
+#define RFCNBE_BadHandle 7     /* Handle passed was bad                 */
+#define RFCNBE_BadSocket 8     /* Problems creating socket              */
+#define RFCNBE_ConnectFailed 9 /* Connect failed                        */
+#define RFCNBE_CallRejNLOCN 10 /* Call rejected, not listening on CN    */
+#define RFCNBE_CallRejNLFCN 11 /* Call rejected, not listening for CN   */
+#define RFCNBE_CallRejCNNP  12 /* Call rejected, called name not present */
+#define RFCNBE_CallRejInfRes 13/* Call rejetced, name ok, no resources   */
+#define RFCNBE_CallRejUnSpec 14/* Call rejected, unspecified error      */
+#define RFCNBE_BadParam      15/* Bad parameters passed ...             */
+#define RFCNBE_Timeout       16/* IO Timed out                          */
+
+/* Text strings for the error responses                                 */
+
+static char *RFCNB_Error_Strings[] = {
+
+  "RFCNBE_OK: Routine completed successfully.",
+  "RFCNBE_NoSpace: No space available for a malloc call.",
+  "RFCNBE_BadName: NetBIOS name could not be translated to IP address.",
+  "RFCNBE_BadRead: Read system call returned an error. Check errno.",
+  "RFCNBE_BadWrite: Write system call returned an error. Check errno.",
+  "RFCNBE_ProtErr: A protocol error has occurred.",
+  "RFCNBE_ConGone: Connection dropped during a read or write system call.",
+  "RFCNBE_BadHandle: Bad connection handle passed.",
+  "RFCNBE_BadSocket: Problems creating socket.",
+  "RFCNBE_ConnectFailed: Connection failed. See errno.",
+  "RFCNBE_CallRejNLOCN: Call rejected. Not listening on called name.",
+  "RFCNBE_CallRejNLFCN: Call rejected. Not listening for called name.",
+  "RFCNBE_CallRejCNNP: Call rejected. Called name not present.",
+  "RFCNBE_CallRejInfRes: Call rejected. Name present, but insufficient resources.",
+  "RFCNBE_CallRejUnSpec: Call rejected. Unspecified error.",
+  "RFCNBE_BadParam: Bad parameters passed to a routine.",
+  "RFCNBE_Timeout: IO Operation timed out ..."
+
+};
+
+
+
diff --git a/daemon/rfcnb/rfcnb-io.c b/daemon/rfcnb/rfcnb-io.c
new file mode 100644
index 0000000..db2437f
--- /dev/null
+++ b/daemon/rfcnb/rfcnb-io.c
@@ -0,0 +1,407 @@
+/* UNIX RFCNB (RFC1001/RFC1002) NEtBIOS implementation
+
+   Version 1.0
+   RFCNB IO Routines ...
+
+   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.
+*/
+
+#include "std-includes.h"
+#include "rfcnb-priv.h"
+#include "rfcnb-util.h"
+#include "rfcnb-io.h"
+#include <sys/uio.h>
+#include <sys/signal.h>
+
+int RFCNB_Timeout = 0;    /* Timeout in seconds ... */
+
+void rfcnb_alarm(int sig)
+
+{
+
+  fprintf(stderr, "IO Timed out ...\n");
+
+}
+
+/* Set timeout value and setup signal handling */
+
+int RFCNB_Set_Timeout(int seconds)
+
+{
+  /* If we are on a Bezerkeley system, use sigvec, else sigaction */
+#ifndef SA_RESTART
+  struct sigvec invec, outvec;
+#else
+  struct sigaction inact, outact;
+#endif
+
+  RFCNB_Timeout = seconds;
+
+  if (RFCNB_Timeout > 0) { /* Set up handler to ignore but not restart */
+
+#ifndef SA_RESTART
+    invec.sv_handler = (void (*)())rfcnb_alarm;
+    invec.sv_mask = 0;
+    invec.sv_flags = SV_INTERRUPT;
+
+    if (sigvec(SIGALRM, &invec, &outvec)  < 0)
+      return(-1);
+#else
+    inact.sa_handler = (void (*)())rfcnb_alarm;
+    memset(&(inact.sa_mask), 0, sizeof(inact.sa_mask));
+    inact.sa_flags = 0;    /* Don't restart */
+
+    if (sigaction(SIGALRM, &inact, &outact) < 0)
+      return(-1);
+
+#endif
+
+  }
+
+  return(0);
+
+}
+
+/* Discard the rest of an incoming packet as we do not have space for it
+   in the buffer we allocated or were passed ...                         */
+
+int RFCNB_Discard_Rest(struct RFCNB_Con *con, int len)
+
+{ char temp[100];   /* Read into here */
+  int rest, this_read, bytes_read;
+
+  /* len is the amount we should read */
+
+#ifdef RFCNB_DEBUG
+  fprintf(stderr, "Discard_Rest called to discard: %i\n", len);
+#endif
+
+  rest = len;
+
+  while (rest > 0) {
+
+    this_read = (rest > sizeof(temp)?sizeof(temp):rest);
+
+    bytes_read = read(con -> fd, temp, this_read);
+
+    if (bytes_read <= 0) { /* Error so return */
+
+      if (bytes_read < 0)
+	RFCNB_errno = RFCNBE_BadRead;
+      else
+	RFCNB_errno = RFCNBE_ConGone;
+
+      RFCNB_saved_errno = errno;
+      return(RFCNBE_Bad);
+
+    }
+
+    rest = rest - bytes_read;
+
+  }
+
+  return(0);
+
+}
+
+
+/* Send an RFCNB packet to the connection.
+
+   We just send each of the blocks linked together ...
+
+   If we can, try to send it as one iovec ...
+
+*/
+
+int RFCNB_Put_Pkt(struct RFCNB_Con *con, struct RFCNB_Pkt *pkt, int len)
+
+{ int len_sent, tot_sent, this_len;
+  struct RFCNB_Pkt *pkt_ptr;
+  char *this_data;
+  int i;
+  struct iovec io_list[10];          /* We should never have more      */
+                                     /* If we do, this will blow up ...*/
+
+  /* Try to send the data ... We only send as many bytes as len claims */
+  /* We should try to stuff it into an IOVEC and send as one write     */
+
+
+  pkt_ptr = pkt;
+  len_sent =  tot_sent = 0;             /* Nothing sent so far */
+  i = 0;
+
+  while ((pkt_ptr != NULL) & (i < 10)) {  /* Watch that magic number! */
+
+    this_len = pkt_ptr -> len;
+    this_data = pkt_ptr -> data;
+    if ((tot_sent + this_len) > len)
+      this_len = len - tot_sent;        /* Adjust so we don't send too much */
+
+    /* Now plug into the iovec ... */
+
+    io_list[i].iov_len = this_len;
+    io_list[i].iov_base = this_data;
+    i++;
+
+    tot_sent += this_len;
+
+    if (tot_sent == len) break;   /* Let's not send too much */
+
+    pkt_ptr = pkt_ptr -> next;
+
+  }
+
+#ifdef RFCNB_DEBUG
+  fprintf(stderr, "Frags = %i, tot_sent = %i\n", i, tot_sent);
+#endif
+
+  /* Set up an alarm if timeouts are set ... */
+
+  if (RFCNB_Timeout > 0)
+    alarm(RFCNB_Timeout);
+
+  if ((len_sent = writev(con -> fd, io_list, i)) < 0) { /* An error */
+
+    con -> err = errno;
+    if (errno == EINTR)  /* We were interrupted ... */
+      RFCNB_errno = RFCNBE_Timeout;
+    else
+      RFCNB_errno = RFCNBE_BadWrite;
+    RFCNB_saved_errno = errno;
+    return(RFCNBE_Bad);
+
+  }
+
+  if (len_sent < tot_sent) { /* Less than we wanted */
+    if (errno == EINTR)      /* We were interrupted */
+      RFCNB_errno = RFCNBE_Timeout;
+    else
+      RFCNB_errno = RFCNBE_BadWrite;
+    RFCNB_saved_errno = errno;
+    return(RFCNBE_Bad);
+  }
+
+  if (RFCNB_Timeout > 0)
+    alarm(0);                /* Reset that sucker */
+
+#ifdef RFCNB_DEBUG
+
+  fprintf(stderr, "Len sent = %i ...\n", len_sent);
+  RFCNB_Print_Pkt(stderr, "sent", pkt, len_sent); /* Print what send ... */
+
+#endif
+
+  return(len_sent);
+
+}
+
+/* Read an RFCNB packet off the connection.
+
+   We read the first 4 bytes, that tells us the length, then read the
+   rest. We should implement a timeout, but we don't just yet
+
+*/
+
+
+int RFCNB_Get_Pkt(struct RFCNB_Con *con, struct RFCNB_Pkt *pkt, int len)
+
+{ int read_len, pkt_len;
+  char hdr[RFCNB_Pkt_Hdr_Len];      /* Local space for the header */
+  struct RFCNB_Pkt *pkt_frag;
+  int more, this_time, offset, frag_len, this_len;
+  BOOL seen_keep_alive = TRUE;
+
+  /* Read that header straight into the buffer */
+
+  if (len < RFCNB_Pkt_Hdr_Len) { /* What a bozo */
+
+#ifdef RFCNB_DEBUG
+    fprintf(stderr, "Trying to read less than a packet:");
+    perror("");
+#endif
+    RFCNB_errno = RFCNBE_BadParam;
+    return(RFCNBE_Bad);
+
+  }
+
+  /* We discard keep alives here ... */
+
+  if (RFCNB_Timeout > 0)
+    alarm(RFCNB_Timeout);
+
+  while (seen_keep_alive) {
+
+    if ((read_len = read(con -> fd, hdr, sizeof(hdr))) < 0) { /* Problems */
+#ifdef RFCNB_DEBUG
+      fprintf(stderr, "Reading the packet, we got:");
+      perror("");
+#endif
+      if (errno == EINTR)
+	RFCNB_errno = RFCNBE_Timeout;
+      else
+	RFCNB_errno = RFCNBE_BadRead;
+      RFCNB_saved_errno = errno;
+      return(RFCNBE_Bad);
+
+    }
+
+    /* Now we check out what we got */
+
+    if (read_len == 0) { /* Connection closed, send back eof?  */
+
+#ifdef RFCNB_DEBUG
+      fprintf(stderr, "Connection closed reading\n");
+#endif
+
+      if (errno == EINTR)
+	RFCNB_errno = RFCNBE_Timeout;
+      else
+	RFCNB_errno = RFCNBE_ConGone;
+      RFCNB_saved_errno = errno;
+      return(RFCNBE_Bad);
+
+    }
+
+    if (RFCNB_Pkt_Type(hdr) == RFCNB_SESSION_KEEP_ALIVE) {
+
+#ifdef RFCNB_DEBUG
+      fprintf(stderr, "RFCNB KEEP ALIVE received\n");
+#endif
+
+    }
+    else {
+      seen_keep_alive = FALSE;
+    }
+
+  }
+
+  /* What if we got less than or equal to a hdr size in bytes? */
+
+  if (read_len < sizeof(hdr)) { /* We got a small packet */
+
+    /* Now we need to copy the hdr portion we got into the supplied packet */
+
+    memcpy(pkt -> data, hdr, read_len);  /*Copy data */
+
+#ifdef RFCNB_DEBUG
+    RFCNB_Print_Pkt(stderr, "rcvd", pkt, read_len);
+#endif
+
+    return(read_len);
+
+  }
+
+  /* Now, if we got at least a hdr size, alloc space for rest, if we need it */
+
+  pkt_len = RFCNB_Pkt_Len(hdr);
+
+#ifdef RFCNB_DEBUG
+  fprintf(stderr, "Reading Pkt: Length = %i\n", pkt_len);
+#endif
+
+  /* Now copy in the hdr */
+
+  memcpy(pkt -> data, hdr, sizeof(hdr));
+
+  /* Get the rest of the packet ... first figure out how big our buf is? */
+  /* And make sure that we handle the fragments properly ... Sure should */
+  /* use an iovec ...                                                    */
+
+  if (len < pkt_len)            /* Only get as much as we have space for */
+    more = len - RFCNB_Pkt_Hdr_Len;
+  else
+    more = pkt_len;
+
+  this_time = 0;
+
+  /* We read for each fragment ... */
+
+  if (pkt -> len == read_len){     /* If this frag was exact size */
+    pkt_frag = pkt -> next;        /* Stick next lot in next frag */
+    offset = 0;                    /* then we start at 0 in next  */
+  }
+  else {
+    pkt_frag = pkt;                /* Otherwise use rest of this frag */
+    offset = RFCNB_Pkt_Hdr_Len;    /* Otherwise skip the header       */
+  }
+
+  frag_len = pkt_frag -> len;
+
+  if (more <= frag_len)     /* If len left to get less than frag space */
+    this_len = more;        /* Get the rest ...                        */
+  else
+    this_len = frag_len - offset;
+
+  while (more > 0) {
+
+    if ((this_time = read(con -> fd, (pkt_frag -> data) + offset, this_len)) <= 0) { /* Problems */
+
+      if (errno == EINTR) {
+
+	RFCNB_errno = RFCNB_Timeout;
+
+      }
+      else {
+	if (this_time < 0)
+	  RFCNB_errno = RFCNBE_BadRead;
+	else
+	  RFCNB_errno = RFCNBE_ConGone;
+      }
+
+      RFCNB_saved_errno = errno;
+      return(RFCNBE_Bad);
+
+    }
+
+#ifdef RFCNB_DEBUG
+    fprintf(stderr, "Frag_Len = %i, this_time = %i, this_len = %i, more = %i\n", frag_len,
+                    this_time, this_len, more);
+#endif
+
+    read_len = read_len + this_time;  /* How much have we read ... */
+
+    /* Now set up the next part */
+
+    if (pkt_frag -> next == NULL) break;       /* That's it here */
+
+    pkt_frag = pkt_frag -> next;
+    this_len = pkt_frag -> len;
+    offset = 0;
+
+    more = more - this_time;
+
+  }
+
+#ifdef RFCNB_DEBUG
+  fprintf(stderr,"Pkt Len = %i, read_len = %i\n", pkt_len, read_len);
+  RFCNB_Print_Pkt(stderr, "rcvd", pkt, read_len + sizeof(hdr));
+#endif
+
+  if (read_len < (pkt_len + sizeof(hdr))) {  /* Discard the rest */
+
+    return(RFCNB_Discard_Rest(con, (pkt_len + sizeof(hdr)) - read_len));
+
+  }
+
+  if (RFCNB_Timeout > 0)
+    alarm(0);                /* Reset that sucker */
+
+  return(read_len + sizeof(RFCNB_Hdr));
+}
diff --git a/daemon/rfcnb/rfcnb-io.h b/daemon/rfcnb/rfcnb-io.h
new file mode 100644
index 0000000..9af8e90
--- /dev/null
+++ b/daemon/rfcnb/rfcnb-io.h
@@ -0,0 +1,28 @@
+/* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
+
+   Version 1.0
+   RFCNB IO Routines 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.
+*/
+
+int RFCNB_Put_Pkt(struct RFCNB_Con *con, struct RFCNB_Pkt *pkt, int len);
+
+int RFCNB_Get_Pkt(struct RFCNB_Con *con, struct RFCNB_Pkt *pkt, int len);
diff --git a/daemon/rfcnb/rfcnb-priv.h b/daemon/rfcnb/rfcnb-priv.h
new file mode 100644
index 0000000..3541c0e
--- /dev/null
+++ b/daemon/rfcnb/rfcnb-priv.h
@@ -0,0 +1,151 @@
+/* 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 err;                  /* 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
diff --git a/daemon/rfcnb/rfcnb-util.c b/daemon/rfcnb/rfcnb-util.c
new file mode 100644
index 0000000..adcc092
--- /dev/null
+++ b/daemon/rfcnb/rfcnb-util.c
@@ -0,0 +1,532 @@
+/* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
+
+   Version 1.0
+   RFCNB Utility Routines ...
+
+   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.
+*/
+
+#include "std-includes.h"
+#include "rfcnb-priv.h"
+#include "rfcnb-util.h"
+#include "rfcnb-io.h"
+
+extern void (*Prot_Print_Routine)(); /* Pointer to protocol print routine */
+
+/* Convert name and pad to 16 chars as needed */
+/* Name 1 is a C string with null termination, name 2 may not be */
+/* If SysName is true, then put a <00> on end, else space>       */
+
+void RFCNB_CvtPad_Name(char *name1, char *name2)
+
+{ char c, c1, c2;
+  int i, len;
+
+  len = strlen(name1);
+
+  for (i = 0; i < 16; i++) {
+
+    if (i >= len) {
+
+     c1 = 'C'; c2 = 'A'; /* CA is a space */
+
+    } else {
+
+      c = name1[i];
+      c1 = (char)((int)c/16 + (int)'A');
+      c2 = (char)((int)c%16 + (int)'A');
+    }
+
+    name2[i*2] = c1;
+    name2[i*2+1] = c2;
+
+  }
+
+  name2[32] = 0;   /* Put in the nll ...*/
+
+}
+
+/* Converts an Ascii NB Name (16 chars) to an RFCNB Name (32 chars)
+   Uses the encoding in RFC1001. Each nibble of byte is added to 'A'
+   to produce the next byte in the name.
+
+   This routine assumes that AName is 16 bytes long and that NBName has
+   space for 32 chars, so be careful ...
+
+*/
+
+void RFCNB_AName_To_NBName(char *AName, char *NBName)
+
+{ char c, c1, c2;
+  int i;
+
+  for (i=0; i < 16; i++) {
+
+    c = AName[i];
+
+    c1 = (char)((c >> 4) + 'A');
+    c2 = (char)((c & 0xF) + 'A');
+
+    NBName[i*2] = c1;
+    NBName[i*2+1] = c2;
+  }
+
+  NBName[32] = 0; /* Put in a null */
+
+}
+
+/* Do the reverse of the above ... */
+
+void RFCNB_NBName_To_AName(char *NBName, char *AName)
+
+{ char c, c1, c2;
+  int i;
+
+  for (i=0; i < 16; i++) {
+
+    c1 = NBName[i*2];
+    c2 = NBName[i*2+1];
+
+    c = (char)(((int)c1 - (int)'A') * 16 + ((int)c2 - (int)'A'));
+
+    AName[i] = c;
+
+  }
+
+  AName[i] = 0;   /* Put a null on the end ... */
+
+}
+
+/* Print a string of bytes in HEX etc */
+
+void RFCNB_Print_Hex(FILE *fd, struct RFCNB_Pkt *pkt, int Offset, int Len)
+
+{ char c1, c2, outbuf1[33];
+  unsigned char c;
+  int i, j;
+  struct RFCNB_Pkt *pkt_ptr = pkt;
+  static char Hex_List[17] = "0123456789ABCDEF";
+
+  j = 0;
+
+  /* We only want to print as much as sepcified in Len */
+
+  while (pkt_ptr != NULL) {
+
+    for (i = 0;
+	 i < ((Len > (pkt_ptr -> len)?pkt_ptr -> len:Len) - Offset);
+	 i++) {
+
+      c = pkt_ptr -> data[i + Offset];
+      c1 = Hex_List[c >> 4];
+      c2 = Hex_List[c & 0xF];
+
+      outbuf1[j++] = c1; outbuf1[j++] = c2;
+
+      if (j == 32){ /* Print and reset */
+	outbuf1[j] = 0;
+	fprintf(fd, "    %s\n", outbuf1);
+	j = 0;
+      }
+
+    }
+
+    Offset = 0;
+    Len = Len - pkt_ptr -> len;   /* Reduce amount by this much */
+    pkt_ptr = pkt_ptr -> next;
+
+  }
+
+  /* Print last lot in the buffer ... */
+
+  if (j > 0) {
+
+    outbuf1[j] = 0;
+    fprintf(fd, "    %s\n", outbuf1);
+
+  }
+
+  fprintf(fd, "\n");
+
+}
+
+/* Get a packet of size n */
+
+struct RFCNB_Pkt *RFCNB_Alloc_Pkt(int n)
+
+{ RFCNB_Pkt *pkt;
+
+  if ((pkt = (struct RFCNB_Pkt *)malloc(sizeof(struct RFCNB_Pkt))) == NULL) {
+
+    RFCNB_errno = RFCNBE_NoSpace;
+    RFCNB_saved_errno = errno;
+    return(NULL);
+
+  }
+
+  pkt -> next = NULL;
+  pkt -> len = n;
+
+  if (n == 0) return(pkt);
+
+  if ((pkt -> data = (char *)malloc(n)) == NULL) {
+
+    RFCNB_errno = RFCNBE_NoSpace;
+    RFCNB_saved_errno = errno;
+    free(pkt);
+    return(NULL);
+
+  }
+
+  return(pkt);
+
+}
+
+/* Free up a packet */
+
+int RFCNB_Free_Pkt(struct RFCNB_Pkt *pkt)
+
+{ struct RFCNB_Pkt *pkt_next; char *data_ptr;
+
+  while (pkt != NULL) {
+
+    pkt_next = pkt -> next;
+
+    data_ptr = pkt -> data;
+
+    if (data_ptr != NULL)
+      free(data_ptr);
+
+    free(pkt);
+
+    pkt = pkt_next;
+
+  }
+
+}
+
+/* Print an RFCNB packet */
+
+void RFCNB_Print_Pkt(FILE *fd, char *dirn, struct RFCNB_Pkt *pkt, int len)
+
+{ char lname[17];
+
+  /* We assume that the first fragment is the RFCNB Header  */
+  /* We should loop through the fragments printing them out */
+
+  fprintf(fd, "RFCNB Pkt %s:", dirn);
+
+  switch (RFCNB_Pkt_Type(pkt -> data)) {
+
+  case RFCNB_SESSION_MESSAGE:
+
+    fprintf(fd, "SESSION MESSAGE: Length = %i\n", RFCNB_Pkt_Len(pkt -> data));
+    RFCNB_Print_Hex(fd, pkt, RFCNB_Pkt_Hdr_Len,
+#ifdef RFCNB_PRINT_DATA
+		    RFCNB_Pkt_Len(pkt -> data) - RFCNB_Pkt_Hdr_Len);
+#else
+                    40);
+#endif
+
+  if (Prot_Print_Routine != 0) { /* Print the rest of the packet */
+
+    Prot_Print_Routine(fd, strcmp(dirn, "sent"), pkt, RFCNB_Pkt_Hdr_Len,
+		       RFCNB_Pkt_Len(pkt -> data) - RFCNB_Pkt_Hdr_Len);
+
+      }
+
+      break;
+
+ case RFCNB_SESSION_REQUEST:
+
+      fprintf(fd, "SESSION REQUEST: Length = %i\n",
+		  RFCNB_Pkt_Len(pkt -> data));
+      RFCNB_NBName_To_AName((char *)(pkt -> data + RFCNB_Pkt_Called_Offset), lname);
+      fprintf(fd, "  Called Name: %s\n", lname);
+      RFCNB_NBName_To_AName((char *)(pkt -> data + RFCNB_Pkt_Calling_Offset), lname);
+      fprintf(fd, "  Calling Name: %s\n", lname);
+
+      break;
+
+ case RFCNB_SESSION_ACK:
+
+      fprintf(fd, "RFCNB SESSION ACK: Length = %i\n",
+		  RFCNB_Pkt_Len(pkt -> data));
+
+      break;
+
+ case RFCNB_SESSION_REJ:
+      fprintf(fd, "RFCNB SESSION REJECT: Length = %i\n",
+		  RFCNB_Pkt_Len(pkt -> data));
+
+      if (RFCNB_Pkt_Len(pkt -> data) < 1) {
+	fprintf(fd, "   Protocol Error, short Reject packet!\n");
+      }
+      else {
+	fprintf(fd, "   Error = %x\n", CVAL(pkt -> data, RFCNB_Pkt_Error_Offset));
+      }
+
+      break;
+
+ case RFCNB_SESSION_RETARGET:
+
+      fprintf(fd, "RFCNB SESSION RETARGET: Length = %i\n",
+		  RFCNB_Pkt_Len(pkt -> data));
+
+      /* Print out the IP address etc and the port? */
+
+      break;
+
+ case RFCNB_SESSION_KEEP_ALIVE:
+
+      fprintf(fd, "RFCNB SESSION KEEP ALIVE: Length = %i\n",
+	      RFCNB_Pkt_Len(pkt -> data));
+      break;
+
+    default:
+
+      break;
+  }
+
+}
+
+/* Resolve a name into an address */
+
+int RFCNB_Name_To_IP(char *host, struct in_addr *Dest_IP)
+
+{ int addr;         /* Assumes IP4, 32 bit network addresses */
+  struct hostent *hp;
+
+        /* Use inet_addr to try to convert the address */
+
+  if ((addr = inet_addr(host)) == INADDR_NONE) { /* Oh well, a good try :-) */
+
+        /* Now try a name look up with gethostbyname */
+
+    if ((hp = gethostbyname(host)) == NULL) { /* Not in DNS */
+
+        /* Try NetBIOS name lookup, how the hell do we do that? */
+
+      RFCNB_errno = RFCNBE_BadName;   /* Is this right? */
+      RFCNB_saved_errno = errno;
+      return(RFCNBE_Bad);
+
+    }
+    else {  /* We got a name */
+
+       memcpy((void *)Dest_IP, (void *)hp -> h_addr_list[0], sizeof(struct in_addr));
+
+    }
+  }
+  else { /* It was an IP address */
+
+    memcpy((void *)Dest_IP, (void *)&addr, sizeof(struct in_addr));
+
+  }
+
+  return 0;
+
+}
+
+/* Disconnect the TCP connection to the server */
+
+int RFCNB_Close(int socket)
+
+{
+
+  close(socket);
+
+  /* If we want to do error recovery, here is where we put it */
+
+  return 0;
+
+}
+
+/* Connect to the server specified in the IP address.
+   Not sure how to handle socket options etc.         */
+
+int RFCNB_IP_Connect(struct in_addr Dest_IP, int port)
+
+{ struct sockaddr_in Socket;
+  int fd;
+
+  /* Create a socket */
+
+  if ((fd = socket(PF_INET, SOCK_STREAM, 0)) < 0) { /* Handle the error */
+
+    RFCNB_errno = RFCNBE_BadSocket;
+    RFCNB_saved_errno = errno;
+    return(RFCNBE_Bad);
+    }
+
+  bzero((char *)&Socket, sizeof(Socket));
+  memcpy((char *)&Socket.sin_addr, (char *)&Dest_IP, sizeof(Dest_IP));
+
+  Socket.sin_port = htons(port);
+  Socket.sin_family = PF_INET;
+
+  /* Now connect to the destination */
+
+  if (connect(fd, (struct sockaddr *)&Socket, sizeof(Socket)) < 0) { /* Error */
+
+    close(fd);
+    RFCNB_errno = RFCNBE_ConnectFailed;
+    RFCNB_saved_errno = errno;
+    return(RFCNBE_Bad);
+    }
+
+  return(fd);
+
+}
+
+/* handle the details of establishing the RFCNB session with remote
+   end
+
+*/
+
+int RFCNB_Session_Req(struct RFCNB_Con *con,
+		      char *Called_Name,
+		      char *Calling_Name,
+		      BOOL *redirect,
+		      struct in_addr *Dest_IP,
+		      int * port)
+
+{ char *sess_pkt;
+
+  /* Response packet should be no more than 9 bytes, make 16 jic */
+
+  char ln1[16], ln2[16], n1[32], n2[32], resp[16];
+  int len;
+  struct RFCNB_Pkt *pkt, res_pkt;
+
+  /* We build and send the session request, then read the response */
+
+  pkt = RFCNB_Alloc_Pkt(RFCNB_Pkt_Sess_Len);
+
+  if (pkt == NULL) {
+
+    return(RFCNBE_Bad);  /* Leave the error that RFCNB_Alloc_Pkt gives) */
+
+  }
+
+  sess_pkt = pkt -> data;    /* Get pointer to packet proper */
+
+  sess_pkt[RFCNB_Pkt_Type_Offset]  = RFCNB_SESSION_REQUEST;
+  RFCNB_Put_Pkt_Len(sess_pkt, RFCNB_Pkt_Sess_Len-RFCNB_Pkt_Hdr_Len);
+  sess_pkt[RFCNB_Pkt_N1Len_Offset] = 32;
+  sess_pkt[RFCNB_Pkt_N2Len_Offset] = 32;
+
+  RFCNB_CvtPad_Name(Called_Name, (sess_pkt + RFCNB_Pkt_Called_Offset));
+  RFCNB_CvtPad_Name(Calling_Name, (sess_pkt + RFCNB_Pkt_Calling_Offset));
+
+  /* Now send the packet */
+
+#ifdef RFCNB_DEBUG
+
+  fprintf(stderr, "Sending packet: ");
+
+#endif
+
+  if ((len = RFCNB_Put_Pkt(con, pkt, RFCNB_Pkt_Sess_Len)) < 0) {
+
+    return(RFCNBE_Bad);       /* Should be able to write that lot ... */
+
+    }
+
+#ifdef RFCNB_DEBUG
+
+  fprintf(stderr, "Getting packet.\n");
+
+#endif
+
+  res_pkt.data = resp;
+  res_pkt.len  = sizeof(resp);
+  res_pkt.next = NULL;
+
+  if ((len = RFCNB_Get_Pkt(con, &res_pkt, sizeof(resp))) < 0) {
+
+    return(RFCNBE_Bad);
+
+  }
+
+  /* Now analyze the packet ... */
+
+  switch (RFCNB_Pkt_Type(resp)) {
+
+    case RFCNB_SESSION_REJ:         /* Didnt like us ... too bad */
+
+      /* Why did we get rejected ? */
+
+      switch (CVAL(resp,RFCNB_Pkt_Error_Offset)) {
+
+      case 0x80:
+	RFCNB_errno = RFCNBE_CallRejNLOCN;
+	break;
+      case 0x81:
+	RFCNB_errno = RFCNBE_CallRejNLFCN;
+	break;
+      case 0x82:
+	RFCNB_errno = RFCNBE_CallRejCNNP;
+	break;
+      case 0x83:
+	RFCNB_errno = RFCNBE_CallRejInfRes;
+	break;
+      case 0x8F:
+	RFCNB_errno = RFCNBE_CallRejUnSpec;
+	break;
+      default:
+	RFCNB_errno = RFCNBE_ProtErr;
+	break;
+      }
+
+      return(RFCNBE_Bad);
+      break;
+
+    case RFCNB_SESSION_ACK:        /* Got what we wanted ...      */
+
+      return(0);
+      break;
+
+    case RFCNB_SESSION_RETARGET:   /* Go elsewhere                */
+
+      *redirect = TRUE;       /* Copy port and ip addr       */
+
+      memcpy(Dest_IP, (resp + RFCNB_Pkt_IP_Offset), sizeof(struct in_addr));
+      *port = SVAL(resp, RFCNB_Pkt_Port_Offset);
+
+      return(0);
+      break;
+
+    default:  /* A protocol error */
+
+      RFCNB_errno = RFCNBE_ProtErr;
+      return(RFCNBE_Bad);
+      break;
+    }
+}
+
+
+
+
+
+
+
+
+
diff --git a/daemon/rfcnb/rfcnb-util.h b/daemon/rfcnb/rfcnb-util.h
new file mode 100644
index 0000000..b3f2315
--- /dev/null
+++ b/daemon/rfcnb/rfcnb-util.h
@@ -0,0 +1,50 @@
+/* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
+
+   Version 1.0
+   RFCNB Utility 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.
+*/
+
+void RFCNB_CvtPad_Name(char *name1, char *name2);
+
+void RFCNB_AName_To_NBName(char *AName, char *NBName);
+
+void RFCNB_NBName_To_AName(char *NBName, char *AName);
+
+void RFCNB_Print_Hex(FILE *fd, struct RFCNB_Pkt *pkt, int Offset, int Len);
+
+struct RFCNB_Pkt *RFCNB_Alloc_Pkt(int n);
+
+void RFCNB_Print_Pkt(FILE *fd, char *dirn, struct RFCNB_Pkt *pkt, int len);
+
+int RFCNB_Name_To_IP(char *host, struct in_addr *Dest_IP);
+
+int RFCNB_Close(int socket);
+
+int RFCNB_IP_Connect(struct in_addr Dest_IP, int port);
+
+int RFCNB_Session_Req(struct RFCNB_Con *con,
+		      char *Called_Name,
+		      char *Calling_Name,
+		      BOOL *redirect,
+		      struct in_addr *Dest_IP,
+		      int * port);
+
diff --git a/daemon/rfcnb/rfcnb.h b/daemon/rfcnb/rfcnb.h
new file mode 100644
index 0000000..a7cfe1f
--- /dev/null
+++ b/daemon/rfcnb/rfcnb.h
@@ -0,0 +1,48 @@
+/* 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.
+*/
+
+/* Error responses */
+
+#include "rfcnb-error.h"
+#include "rfcnb-common.h"
+
+/* Defines we need */
+
+#define RFCNB_Default_Port 139
+
+/* Definition of routines we define */
+
+void *RFCNB_Call(char *Called_Name, char *Calling_Name, char *Called_Address,
+		 int port);
+
+int RFCNB_Send(void *Con_Handle, struct RFCNB_Pkt *Data, int Length);
+
+int RFCNB_Recv(void *Con_Handle, struct RFCNB_Pkt *Data, int Length);
+
+int RFCNB_Hangup(void *con_Handle);
+
+void *RFCNB_Listen();
+
+void RFCNB_Get_Error(char *buffer, int buf_len);
diff --git a/daemon/rfcnb/session.c b/daemon/rfcnb/session.c
new file mode 100644
index 0000000..981fda8
--- /dev/null
+++ b/daemon/rfcnb/session.c
@@ -0,0 +1,364 @@
+/* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
+
+   Version 1.0
+   Session Routines ...
+
+   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.
+*/
+
+int RFCNB_errno = 0;
+int RFCNB_saved_errno = 0;
+#define RFCNB_ERRNO
+
+#include "std-includes.h"
+#include <netinet/tcp.h>
+#include "rfcnb-priv.h"
+#include "rfcnb-util.h"
+
+int RFCNB_Stats[RFCNB_MAX_STATS];
+
+void (*Prot_Print_Routine)() = NULL;      /* Pointer to print routine */
+
+/* Set up a session with a remote name. We are passed Called_Name as a
+   string which we convert to a NetBIOS name, ie space terminated, up to
+   16 characters only if we need to. If Called_Address is not empty, then
+   we use it to connect to the remote end, but put in Called_Name ... Called
+   Address can be a DNS based name, or a TCP/IP address ...
+*/
+
+void *RFCNB_Call(char *Called_Name, char *Calling_Name, char *Called_Address,
+		 int port)
+
+{ struct RFCNB_Con *con;
+  struct in_addr Dest_IP;
+  int Client;
+  BOOL redirect; struct redirect_addr *redir_addr;
+  char *Service_Address;
+
+  /* Now, we really should look up the port in /etc/services ... */
+
+  if (port == 0) port = RFCNB_Default_Port;
+
+  /* Create a connection structure first */
+
+  if ((con = (struct RFCNB_Con *)malloc(sizeof(struct RFCNB_Con))) == NULL) { /* Error in size */
+
+    RFCNB_errno = RFCNBE_NoSpace;
+    RFCNB_saved_errno = errno;
+    return(NULL);
+
+    }
+
+  con -> fd = -0;             /* no descriptor yet */
+  con -> err = 0;           /* no error yet */
+  con -> timeout = 0;         /* no timeout   */
+  con -> redirects = 0;
+
+  /* Resolve that name into an IP address */
+
+  Service_Address = Called_Name;
+  if (strcmp(Called_Address, "") != 0) { /* If the Called Address = "" */
+    Service_Address = Called_Address;
+  }
+
+  if ((errno = RFCNB_Name_To_IP(Service_Address, &Dest_IP)) < 0) { /* Error */
+
+    /* No need to modify RFCNB_errno as it was done by RFCNB_Name_To_IP */
+
+    return(NULL);
+
+    }
+
+  /* Now connect to the remote end */
+
+  redirect = TRUE;     /* Fudge this one so we go once through */
+
+  while (redirect) {   /* Connect and get session info etc */
+
+    redirect = FALSE;  /* Assume all OK */
+
+    /* Build the redirect info. First one is first addr called */
+    /* And tack it onto the list of addresses we called        */
+
+    if ((redir_addr = (struct redirect_addr *)malloc(sizeof(struct redirect_addr))) == NULL) { /* Could not get space */
+
+      RFCNB_errno = RFCNBE_NoSpace;
+      RFCNB_saved_errno = errno;
+      return(NULL);
+
+    }
+
+    memcpy((char *)&(redir_addr -> ip_addr), (char *)&Dest_IP, sizeof(Dest_IP));
+    redir_addr -> port = port;
+    redir_addr -> next = NULL;
+
+    if (con -> redirect_list == NULL) { /* Stick on head */
+
+      con -> redirect_list = con -> last_addr = redir_addr;
+
+    } else {
+
+      con -> last_addr -> next = redir_addr;
+      con -> last_addr = redir_addr;
+
+    }
+
+    /* Now, make that connection */
+
+    if ((Client = RFCNB_IP_Connect(Dest_IP, port)) < 0) { /* Error */
+
+      /* No need to modify RFCNB_errno as it was done by RFCNB_IP_Connect */
+
+      return(NULL);
+
+      }
+
+    con -> fd = Client;
+
+    /* Now send and handle the RFCNB session request              */
+    /* If we get a redirect, we will comeback with redirect true
+       and a new IP address in DEST_IP                            */
+
+    if ((errno = RFCNB_Session_Req(con,
+				   Called_Name,
+   				   Calling_Name,
+				   &redirect, &Dest_IP, &port)) < 0) {
+
+      /* No need to modify RFCNB_errno as it was done by RFCNB_Session.. */
+
+      return(NULL);
+
+      }
+
+    if (redirect) {
+
+      /* We have to close the connection, and then try again */
+
+      (con -> redirects)++;
+
+      RFCNB_Close(con -> fd);  /* Close it */
+
+      }
+    }
+
+  return(con);
+
+}
+
+/* We send a packet to the other end ... for the moment, we treat the
+   data as a series of pointers to blocks of data ... we should check the
+   length ... */
+
+int RFCNB_Send(struct RFCNB_Con *Con_Handle, struct RFCNB_Pkt *udata, int Length)
+
+{ struct RFCNB_Pkt *pkt; char *hdr;
+  int len;
+
+  /* Plug in the header and send the data */
+
+  pkt = RFCNB_Alloc_Pkt(RFCNB_Pkt_Hdr_Len);
+
+  if (pkt == NULL) {
+
+    RFCNB_errno = RFCNBE_NoSpace;
+    RFCNB_saved_errno = errno;
+    return(RFCNBE_Bad);
+
+  }
+
+  pkt -> next = udata;   /* The user data we want to send */
+
+  hdr = pkt -> data;
+
+  /* Following crap is for portability across multiple UNIX machines */
+
+  *(hdr + RFCNB_Pkt_Type_Offset)  = RFCNB_SESSION_MESSAGE;
+  RFCNB_Put_Pkt_Len(hdr, Length);
+
+#ifdef RFCNB_DEBUG
+
+  fprintf(stderr, "Sending packet: ");
+
+#endif
+
+  if ((len = RFCNB_Put_Pkt(Con_Handle, pkt, Length + RFCNB_Pkt_Hdr_Len)) < 0) {
+
+    /* No need to change RFCNB_errno as it was done by put_pkt ...     */
+
+    return(RFCNBE_Bad);   /* Should be able to write that lot ... */
+
+  }
+
+  /* Now we have sent that lot, let's get rid of the RFCNB Header and return */
+
+  pkt -> next = NULL;
+
+  RFCNB_Free_Pkt(pkt);
+
+  return(len);
+
+}
+
+/* We pick up a message from the internet ... We have to worry about
+   non-message packets ...                                           */
+
+int RFCNB_Recv(void *con_Handle, struct RFCNB_Pkt *Data, int Length)
+
+{ struct RFCNB_Pkt *pkt; struct RFCNB_Hdr *hdr;
+  int ret_len;
+
+  if (con_Handle == NULL){
+
+    RFCNB_errno = RFCNBE_BadHandle;
+    RFCNB_saved_errno = errno;
+    return(RFCNBE_Bad);
+
+  }
+
+  /* Now get a packet from below. We allocate a header first */
+
+  /* Plug in the header and send the data */
+
+  pkt = RFCNB_Alloc_Pkt(RFCNB_Pkt_Hdr_Len);
+
+  if (pkt == NULL) {
+
+    RFCNB_errno = RFCNBE_NoSpace;
+    RFCNB_saved_errno = errno;
+    return(RFCNBE_Bad);
+
+  }
+
+  pkt -> next = Data;  /* Plug in the data portion */
+
+  if ((ret_len = RFCNB_Get_Pkt(con_Handle, pkt, Length + RFCNB_Pkt_Hdr_Len)) < 0) {
+
+#ifdef RFCNB_DEBUG
+    fprintf(stderr, "Bad packet return in RFCNB_Recv... \n");
+#endif
+
+    return(RFCNBE_Bad);
+
+  }
+
+  /* We should check that we go a message and not a keep alive */
+
+  pkt -> next = NULL;
+
+  RFCNB_Free_Pkt(pkt);
+
+  return(ret_len);
+
+}
+
+/* We just disconnect from the other end, as there is nothing in the RFCNB */
+/* protocol that specifies any exchange as far as I can see                */
+
+int RFCNB_Hangup(struct RFCNB_Con *con_Handle)
+
+{
+
+  if (con_Handle != NULL) {
+    RFCNB_Close(con_Handle -> fd);  /* Could this fail? */
+    free(con_Handle);
+  }
+
+  return 0;
+
+
+}
+
+/* Set TCP_NODELAY on the socket                                          */
+
+int RFCNB_Set_Sock_NoDelay(struct RFCNB_Con *con_Handle, BOOL yn)
+
+{
+
+  return(setsockopt(con_Handle -> fd, IPPROTO_TCP, TCP_NODELAY,
+		    (char *)&yn, sizeof(yn)));
+
+}
+
+
+/* Listen for a connection on a port???, when                             */
+/* the connection comes in, we return with the connection                 */
+
+void *RFCNB_Listen()
+
+{
+
+}
+
+/* Pick up the last error response as a string, hmmm, this routine should */
+/* have been different ...                                                */
+
+void RFCNB_Get_Error(char *buffer, int buf_len)
+
+{
+
+  if (RFCNB_saved_errno <= 0) {
+    sprintf(buffer, "%s", RFCNB_Error_Strings[RFCNB_errno]);
+  }
+  else {
+    sprintf(buffer, "%s\n\terrno:%s", RFCNB_Error_Strings[RFCNB_errno],
+	    strerror(RFCNB_saved_errno));
+  }
+
+}
+
+/* Pick up the last error response and returns as a code                 */
+
+int RFCNB_Get_Last_Error()
+
+{
+
+  return(RFCNB_errno);
+
+}
+
+/* Pick up saved errno as well */
+
+int RFCNB_Get_Last_Errno()
+
+{
+
+  return(RFCNB_saved_errno);
+
+}
+
+/* Pick up the last error response and return in string ...             */
+
+int RFCNB_Get_Error_Msg(int code, char *msg_buf, int len)
+
+{
+
+  strncpy(msg_buf, RFCNB_Error_Strings[abs(code)], len);
+
+}
+
+/* Register a higher level protocol print routine */
+
+void RFCNB_Register_Print_Routine(void (*fn)())
+
+{
+
+  Prot_Print_Routine = fn;
+
+}
diff --git a/daemon/rfcnb/std-includes.h b/daemon/rfcnb/std-includes.h
new file mode 100644
index 0000000..e90e60a
--- /dev/null
+++ b/daemon/rfcnb/std-includes.h
@@ -0,0 +1,45 @@
+/* RFCNB Standard includes ... */
+/*
+
+   RFCNB Standard Includes
+
+   Copyright (C) 1996, Richard Sharpe
+
+/* One day we will conditionalize these on OS types ... */
+
+/*
+   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.
+*/
+
+#define BOOL int
+typedef short int16;
+
+#include <netdb.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <signal.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#define TRUE 1
+#define FALSE 0
+
+/* Pick up define for INADDR_NONE */
+
+#ifndef INADDR_NONE
+#define INADDR_NONE -1
+#endif
diff --git a/daemon/rfcnb/x_Makefile b/daemon/rfcnb/x_Makefile
new file mode 100644
index 0000000..97a01be
--- /dev/null
+++ b/daemon/rfcnb/x_Makefile
@@ -0,0 +1,38 @@
+# Find the LDFLAGS entry for your system type and uncomment it ...
+
+CC = gcc
+
+#CFLAGS = -g -DRFCNB_DEBUG
+# Uncomment the above and recomment the below if you want debugging 
+CFLAGS = -g
+
+#CFLAGS = -g -DRFCNB_DEBUG -DRFCNB_PRINT_DATA
+# Different LDFLAGS for different systems:
+# ULTRIX and Digital UNIX (OSF/1)
+# LDFALGS =
+#
+# Linux   
+# LDFLAGS = 
+#
+# Solaris and maybe SunOS???
+# LDFLAGS = -lsocket -lnsl
+#
+# HP-UX ???
+# LDFLAGS = ???
+
+INCLUDES = rfcnb.h rfcnb-priv.h rfcnb-util.h rfcnb-io.h
+
+.SUFFIXES: .c .o .h
+
+all: test_rfcnb
+
+.c.o: $(INCLUDES)
+	@echo Compiling $*.c
+	@$(CC) $(CFLAGS) -c $*.c
+
+test_rfcnb:	test_rfcnb.o session.o rfcnb-util.o rfcnb-io.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -o test_rfcnb test_rfcnb.o session.o rfcnb-util.o rfcnb-io.o
+
+clean:
+	rm *.o test_rfcnb
+