tcp_vmsl.c
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- /*
- * Program: VMS TCP/IP routines for Netlib.
- *
- * Author: Mark Crispin
- * Networks and Distributed Computing
- * Computing & Communications
- * University of Washington
- * Administration Building, AG-44
- * Seattle, WA 98195
- * Internet: MRC@CAC.Washington.EDU
- *
- * Date: 2 August 1994
- * Last Edited: 28 September 1998
- *
- * Copyright 1998 by the University of Washington
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted, provided
- * that the above copyright notice appears in all copies and that both the
- * above copyright notice and this permission notice appear in supporting
- * documentation, and that the name of the University of Washington not be
- * used in advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission. This software is made available
- * "as is", and
- * THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
- * WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN
- * NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL,
- * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT
- * (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN CONNECTION
- * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
- /* Thanks to Yehavi Bourvine at The Hebrew University of Jerusalem who
- contributed the original VMS code */
- #include <descrip.h>
- /* TCP/IP manipulate parameters
- * Accepts: function code
- * function-dependent value
- * Returns: function-dependent return value
- */
- void *tcp_parameters (long function,void *value)
- {
- return NIL;
- }
-
- /* TCP/IP open
- * Accepts: host name
- * contact service name
- * contact port number
- * Returns: TCP/IP stream if success else NIL
- */
- TCPSTREAM *tcp_open (char *host,char *service,unsigned long port)
- {
- TCPSTREAM *stream = NIL;
- unsigned long sock;
- int status;
- char tmp[MAILTMPLEN];
- /* hostname to connect to */
- struct dsc$descriptor HostDesc = { 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, NULL };
- /* assign a local socket */
- if (!((status = net_assign (&sock)) & 0x1)) {
- sprintf (tmp,"Unable to assign to net, status=%d",status);
- mm_log (tmp,ERROR);
- return NIL;
- }
- if (!((status = net_bind (&sock,1)) & 0x1)) {
- sprintf (tmp,"Unable to create local socket, status=%d",status);
- mm_log (tmp,ERROR);
- return NIL;
- }
- /* open connection */
- HostDesc.dsc$w_length = strlen (host);
- HostDesc.dsc$a_pointer = host;
- if (!((status = tcp_connect (&sock,&HostDesc,port)) & 0x1)) {
- sprintf (tmp,"Can't connect to %.80s,%lu: %s",host,port,strerror (errno));
- mm_log (tmp,ERROR);
- return NIL;
- }
- /* create TCP/IP stream */
- stream = (TCPSTREAM *) fs_get (sizeof (TCPSTREAM));
- stream->host = cpystr (host); /* copy official host name */
- /* copy local host name */
- stream->localhost = cpystr (mylocalhost ());
- stream->port = port; /* copy port number */
- /* init sockets */
- stream->tcpsi = stream->tcpso = sock;
- stream->ictr = 0; /* init input counter */
- return stream; /* return success */
- }
- /* TCP/IP authenticated open
- * Accepts: NETMBX specifier
- * service name
- * returned user name buffer
- * Returns: TCP/IP stream if success else NIL
- */
- TCPSTREAM *tcp_aopen (NETMBX *mb,char *service,char *usrbuf)
- {
- return NIL;
- }
- /* TCP/IP receive line
- * Accepts: TCP/IP stream
- * Returns: text line string or NIL if failure
- */
- char *tcp_getline (TCPSTREAM *stream)
- {
- int n,m;
- char *st,*ret,*stp;
- char c = ' ';
- char d;
- /* make sure have data */
- if (!tcp_getdata (stream)) return NIL;
- st = stream->iptr; /* save start of string */
- n = 0; /* init string count */
- while (stream->ictr--) { /* look for end of line */
- d = *stream->iptr++; /* slurp another character */
- if ((c == ' 15') && (d == ' 12')) {
- ret = (char *) fs_get (n--);
- memcpy (ret,st,n); /* copy into a free storage string */
- ret[n] = ' '; /* tie off string with null */
- return ret;
- }
- n++; /* count another character searched */
- c = d; /* remember previous character */
- }
- /* copy partial string from buffer */
- memcpy ((ret = stp = (char *) fs_get (n)),st,n);
- /* get more data from the net */
- if (!tcp_getdata (stream)) return NIL;
- /* special case of newline broken by buffer */
- if ((c == ' 15') && (*stream->iptr == ' 12')) {
- stream->iptr++; /* eat the line feed */
- stream->ictr--;
- ret[n - 1] = ' '; /* tie off string with null */
- }
- /* else recurse to get remainder */
- else if (st = tcp_getline (stream)) {
- ret = (char *) fs_get (n + 1 + (m = strlen (st)));
- memcpy (ret,stp,n); /* copy first part */
- memcpy (ret + n,st,m); /* and second part */
- fs_give ((void **) &stp); /* flush first part */
- fs_give ((void **) &st); /* flush second part */
- ret[n + m] = ' '; /* tie off string with null */
- }
- return ret;
- }
- /* TCP/IP receive buffer
- * Accepts: TCP/IP stream
- * size in bytes
- * buffer to read into
- * Returns: T if success, NIL otherwise
- */
- long tcp_getbuffer (TCPSTREAM *stream,unsigned long size,char *buffer)
- {
- unsigned long n;
- char *bufptr = buffer;
- while (size > 0) { /* until request satisfied */
- if (!tcp_getdata (stream)) return NIL;
- n = min (size,stream->ictr);/* number of bytes to transfer */
- /* do the copy */
- memcpy (bufptr,stream->iptr,n);
- bufptr += n; /* update pointer */
- stream->iptr +=n;
- size -= n; /* update # of bytes to do */
- stream->ictr -=n;
- }
- bufptr[0] = ' '; /* tie off string */
- return T;
- }
- /* TCP/IP receive data
- * Accepts: TCP/IP stream
- * Returns: T if success, NIL otherwise
- */
- long tcp_getdata (TCPSTREAM *stream)
- {
- char tmp[MAILTMPLEN];
- int i,status;
- /* Note: the doc says we need here dynamic descriptor, but we need static
- * one... */
- struct dsc$descriptor BufDesc = {BUFLEN,DSC$K_DTYPE_T,DSC$K_CLASS_S,
- stream->ibuf};
- static short iosb[4];
- if (stream->tcpsi < 0) return NIL;
- while (stream->ictr < 1) { /* if nothing in the buffer */
- if (!((status = tcp_receive(&(stream->tcpsi), &BufDesc, iosb)) & 0x1)) {
- sprintf (tmp,"Error reading from TcpIp/NETLIB, status=%d",status);
- mm_log (tmp,ERROR);
- return tcp_abort (stream);
- }
- if (iosb[1] > BUFLEN) i = BUFLEN;
- else i = iosb[1];
- if (i < 1) return tcp_abort (stream);
- stream->ictr = i; /* set new byte count */
- stream->iptr = stream->ibuf;/* point at TCP buffer */
- }
- return T;
- }
- /* TCP/IP send string as record
- * Accepts: TCP/IP stream
- * string pointer
- * Returns: T if success else NIL
- */
- long tcp_soutr (TCPSTREAM *stream,char *string)
- {
- return tcp_sout (stream,string,(unsigned long) strlen (string));
- }
- /* TCP/IP send string
- * Accepts: TCP/IP stream
- * string pointer
- * byte count
- * Returns: T if success else NIL
- */
- long tcp_sout (TCPSTREAM *stream,char *string,unsigned long size)
- {
- int status;
- struct dsc$descriptor_s BufDesc = {strlen(string),DSC$K_DTYPE_T,
- DSC$K_CLASS_S,string };
- /* 2 = Do not add rn */
- return ((status = tcp_send (&(stream->tcpso),&BufDesc,2)) & 0x1) ? T :
- tcp_abort (stream);
- }
- /* TCP/IP close
- * Accepts: TCP/IP stream
- */
- void tcp_close (TCPSTREAM *stream)
- {
- tcp_abort (stream); /* nuke the stream */
- /* flush host names */
- fs_give ((void **) &stream->host);
- fs_give ((void **) &stream->localhost);
- fs_give ((void **) &stream); /* flush the stream */
- }
- /* TCP/IP abort stream
- * Accepts: TCP/IP stream
- * Returns: NIL always
- */
- long tcp_abort (TCPSTREAM *stream)
- {
- if (stream->tcpsi >= 0) { /* no-op if no socket */
- /* nuke the socket */
- tcp_disconnect (&(stream->tcpsi));
- stream->tcpsi = stream->tcpso = -1;
- }
- return NIL;
- }
- /* TCP/IP get host name
- * Accepts: TCP/IP stream
- * Returns: host name for this stream
- */
- char *tcp_host (TCPSTREAM *stream)
- {
- return stream->host; /* return host name */
- }
- /* TCP/IP get remote host name
- * Accepts: TCP/IP stream
- * Returns: host name for this stream
- */
- char *tcp_remotehost (TCPSTREAM *stream)
- {
- return stream->host; /* return host name */
- }
- /* TCP/IP return port for this stream
- * Accepts: TCP/IP stream
- * Returns: port number for this stream
- */
- unsigned long tcp_port (TCPSTREAM *stream)
- {
- return stream->port; /* return port number */
- }
- /* TCP/IP get local host name
- * Accepts: TCP/IP stream
- * Returns: local host name
- */
- char *tcp_localhost (TCPSTREAM *stream)
- {
- return stream->localhost; /* return local host name */
- }
- /* Return my local host name
- * Returns: my local host name
- */
- char *mylocalhost ()
- {
- int status;
- char tmp[MAILTMPLEN];
- if (!myLocalHost) { /* have local host yet? */
- /* receives local host name */
- struct dsc$descriptor LocalhostDesc = {0,DSC$K_DTYPE_T,DSC$K_CLASS_D,NULL};
- if (!((status = net_get_hostname (&LocalhostDesc)) & 0x1)) {
- sprintf (tmp,"Can't get local hostname, status=%d",status);
- mm_log (tmp,ERROR);
- return "UNKNOWN";
- }
- strncpy (tmp,LocalhostDesc.dsc$a_pointer,LocalhostDesc.dsc$w_length);
- tmp[LocalhostDesc.dsc$w_length] = ' ';
- str$free1_dx (&LocalhostDesc);
- myLocalHost = cpystr (tmp);
- }
- return myLocalHost;
- }
- /* TCP/IP return canonical form of host name
- * Accepts: host name
- * Returns: canonical form of host name
- */
- char *tcp_canonical (char *name)
- {
- return name;
- }
- /* TCP/IP get client host name (server calls only)
- * Returns: client host name
- */
- char *tcp_clienthost ()
- {
- return "UNKNOWN";
- }