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NetBSD/gnu/libexec/uucp/libuuconf/hport.c

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Upgrade to Taylor UUCP 1.04
1993-08-04 23:33:45 +04:00
/* hport.c
Find a port in the HDB configuration files.
Copyright (C) 1992 Ian Lance Taylor
This file is part of the Taylor UUCP uuconf library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License
as published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
The author of the program may be contacted at ian@airs.com or
c/o Infinity Development Systems, P.O. Box 520, Waltham, MA 02254.
*/
#include "uucnfi.h"
#if USE_RCS_ID
const char _uuconf_hport_rcsid[] = "$Id: hport.c,v 1.1 1993/08/04 19:34:20 jtc Exp $";
#endif
#include <errno.h>
#include <ctype.h>
/* Find a port in the HDB configuration files by name, baud rate, and
special purpose function. */
int
uuconf_hdb_find_port (pglobal, zname, ibaud, ihighbaud, pifn, pinfo, qport)
pointer pglobal;
const char *zname;
long ibaud;
long ihighbaud;
int (*pifn) P((struct uuconf_port *, pointer));
pointer pinfo;
struct uuconf_port *qport;
{
struct sglobal *qglobal = (struct sglobal *) pglobal;
char *zline;
size_t cline;
char **pzsplit;
size_t csplit;
int iret;
char **pz;
zline = NULL;
cline = 0;
pzsplit = NULL;
csplit = 0;
iret = UUCONF_NOT_FOUND;
for (pz = qglobal->qprocess->pzhdb_devices; *pz != NULL; pz++)
{
FILE *e;
int cchars;
qglobal->ilineno = 0;
e = fopen (*pz, "r");
if (e == NULL)
{
if (FNO_SUCH_FILE ())
continue;
qglobal->ierrno = errno;
iret = UUCONF_FOPEN_FAILED | UUCONF_ERROR_ERRNO;
break;
}
iret = UUCONF_NOT_FOUND;
while ((cchars = _uuconf_getline (qglobal, &zline, &cline, e)) > 0)
{
int ctoks;
char *z, *zprotos, *zport;
long ilow, ihigh;
pointer pblock;
++qglobal->ilineno;
iret = UUCONF_NOT_FOUND;
--cchars;
if (zline[cchars] == '\n')
zline[cchars] = '\0';
if (isspace (BUCHAR (zline[0])) || zline[0] == '#')
continue;
ctoks = _uuconf_istrsplit (zline, '\0', &pzsplit, &csplit);
if (ctoks < 0)
{
qglobal->ierrno = errno;
iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
break;
}
/* An entry in Devices is
type device dial-device baud dialer-token pairs
The type (normally "ACU") is treated as the name. */
/* If there aren't enough entries, ignore the line; this
should probably do something more useful. */
if (ctoks < 4)
continue;
/* There may be a comma separated list of protocols after
the name. */
zprotos = strchr (pzsplit[0], ',');
if (zprotos != NULL)
{
*zprotos = '\0';
++zprotos;
}
zport = pzsplit[0];
/* Get any modem class, and pick up the baud rate while
we're at it. The modem class will be appended to the
name, so we need to get it before we see if we've found
the port with the right name. */
z = pzsplit[3];
if (strcasecmp (z, "Any") == 0
|| strcmp (z, "-") == 0)
{
ilow = 0L;
ihigh = 0L;
}
else
{
char *zend;
while (*z != '\0' && ! isdigit (BUCHAR (*z)))
++z;
ilow = strtol (z, &zend, 10);
if (*zend == '-')
ihigh = strtol (zend + 1, (char **) NULL, 10);
else
ihigh = ilow;
if (z != pzsplit[3])
{
size_t cclass, cport;
cclass = z - pzsplit[3];
cport = strlen (pzsplit[0]);
zport = malloc (cport + cclass + 1);
if (zport == NULL)
{
qglobal->ierrno = errno;
iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
break;
}
memcpy ((pointer) zport, (pointer) pzsplit[0], cport);
memcpy ((pointer) (zport + cport), (pointer) pzsplit[3],
cclass);
zport[cport + cclass] = '\0';
}
}
/* Make sure the name and baud rate match any argument. */
if ((zname != NULL
&& strcmp (zport, zname) != 0)
|| (ibaud != 0
&& ilow != 0
&& (ilow > ibaud || ihigh < ibaud)))
{
if (zport != pzsplit[0])
free ((pointer) zport);
continue;
}
/* Some systems permit ,M after the device name. This means
to open the port with O_NDELAY and then change it. We
just ignore this flag, although perhaps we should record
it somewhere. */
pzsplit[1][strcspn (pzsplit[1], ",")] = '\0';
/* Now we must construct the port information, so that we
can pass it to pifn. The port type is determined by its
name, unfortunately. The name "Direct" is used for a
direct port, "TCP" for a TCP port, and anything else for
a modem port. */
pblock = NULL;
_uuconf_uclear_port (qport);
qport->uuconf_zname = zport;
qport->uuconf_zprotocols = zprotos;
if (strcmp (pzsplit[0], "Direct") == 0)
{
qport->uuconf_ttype = UUCONF_PORTTYPE_DIRECT;
qport->uuconf_u.uuconf_sdirect.uuconf_zdevice = pzsplit[1];
qport->uuconf_u.uuconf_sdirect.uuconf_ibaud = ilow;
}
else if (strcmp (pzsplit[0], "TCP") == 0)
{
/* For a TCP port, the device name is taken as the TCP
port to use. */
qport->uuconf_ttype = UUCONF_PORTTYPE_TCP;
qport->uuconf_ireliable
= (UUCONF_RELIABLE_ENDTOEND | UUCONF_RELIABLE_RELIABLE
| UUCONF_RELIABLE_EIGHT | UUCONF_RELIABLE_FULLDUPLEX
| UUCONF_RELIABLE_SPECIFIED);
qport->uuconf_u.uuconf_stcp.uuconf_zport = pzsplit[1];
}
else if (ctoks >= 5
&& (strcmp (pzsplit[4], "TLI") == 0
|| strcmp (pzsplit[4], "TLIS") == 0))
{
size_t c;
char **pzd;
qport->uuconf_ttype = UUCONF_PORTTYPE_TLI;
qport->uuconf_u.uuconf_stli.uuconf_zdevice = pzsplit[1];
qport->uuconf_u.uuconf_stli.uuconf_fstream
= strcmp (pzsplit[4], "TLIS") == 0;
qport->uuconf_u.uuconf_stli.uuconf_pzpush = NULL;
pblock = uuconf_malloc_block ();
if (pblock == NULL)
{
qglobal->ierrno = errno;
iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
break;
}
c = (ctoks - 4) * sizeof (char *);
pzd = (char **) uuconf_malloc (pblock, c + sizeof (char *));
if (pzd == NULL)
{
qglobal->ierrno = errno;
uuconf_free_block (pblock);
iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
break;
}
memcpy ((pointer) pzd, (pointer) (pzsplit + 4), c);
pzd[ctoks - 4] = NULL;
qport->uuconf_u.uuconf_stli.uuconf_pzdialer = pzd;
qport->uuconf_u.uuconf_stli.uuconf_zservaddr = NULL;
qport->uuconf_ireliable
= (UUCONF_RELIABLE_ENDTOEND | UUCONF_RELIABLE_RELIABLE
| UUCONF_RELIABLE_EIGHT | UUCONF_RELIABLE_FULLDUPLEX
| UUCONF_RELIABLE_SPECIFIED);
}
else
{
qport->uuconf_ttype = UUCONF_PORTTYPE_MODEM;
qport->uuconf_u.uuconf_smodem.uuconf_zdevice = pzsplit[1];
if (strcmp (pzsplit[2], "-") != 0)
qport->uuconf_u.uuconf_smodem.uuconf_zdial_device =
pzsplit[2];
else
qport->uuconf_u.uuconf_smodem.uuconf_zdial_device = NULL;
if (ilow == ihigh)
{
qport->uuconf_u.uuconf_smodem.uuconf_ibaud = ilow;
qport->uuconf_u.uuconf_smodem.uuconf_ilowbaud = 0L;
qport->uuconf_u.uuconf_smodem.uuconf_ihighbaud = 0L;
}
else
{
qport->uuconf_u.uuconf_smodem.uuconf_ibaud = 0L;
qport->uuconf_u.uuconf_smodem.uuconf_ilowbaud = ilow;
qport->uuconf_u.uuconf_smodem.uuconf_ihighbaud = ihigh;
}
qport->uuconf_u.uuconf_smodem.uuconf_fcarrier = TRUE;
if (ctoks < 5)
qport->uuconf_u.uuconf_smodem.uuconf_pzdialer = NULL;
else
{
size_t c;
char **pzd;
pblock = uuconf_malloc_block ();
if (pblock == NULL)
{
qglobal->ierrno = errno;
iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
break;
}
c = (ctoks - 4) * sizeof (char *);
pzd = (char **) uuconf_malloc (pblock, c + sizeof (char *));
if (pzd == NULL)
{
qglobal->ierrno = errno;
uuconf_free_block (pblock);
iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
break;
}
memcpy ((pointer) pzd, (pointer) (pzsplit + 4), c);
pzd[ctoks - 4] = NULL;
qport->uuconf_u.uuconf_smodem.uuconf_pzdialer = pzd;
}
qport->uuconf_u.uuconf_smodem.uuconf_qdialer = NULL;
}
if (pifn != NULL)
{
iret = (*pifn) (qport, pinfo);
if (iret != UUCONF_SUCCESS)
{
if (zport != pzsplit[0])
free ((pointer) zport);
if (pblock != NULL)
uuconf_free_block (pblock);
if (iret != UUCONF_NOT_FOUND)
break;
continue;
}
}
/* This is the port we want. */
if (pblock == NULL)
{
pblock = uuconf_malloc_block ();
if (pblock == NULL)
{
qglobal->ierrno = errno;
iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
break;
}
}
if (uuconf_add_block (pblock, zline) != 0
|| (zport != pzsplit[0]
&& uuconf_add_block (pblock, zport) != 0))
{
qglobal->ierrno = errno;
uuconf_free_block (pblock);
iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
break;
}
zline = NULL;
qport->uuconf_palloc = pblock;
break;
}
(void) fclose (e);
if (iret != UUCONF_NOT_FOUND)
break;
}
if (zline != NULL)
free ((pointer) zline);
if (pzsplit != NULL)
free ((pointer) pzsplit);
if (iret != UUCONF_SUCCESS && iret != UUCONF_NOT_FOUND)
{
qglobal->zfilename = *pz;
iret |= UUCONF_ERROR_FILENAME | UUCONF_ERROR_LINENO;
}
return iret;
}