252 lines
6.5 KiB
C
252 lines
6.5 KiB
C
/* vport.c
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Find a port in the V2 configuration files.
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Copyright (C) 1992 Ian Lance Taylor
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This file is part of the Taylor UUCP uuconf library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License
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as published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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The author of the program may be contacted at ian@airs.com or
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c/o Infinity Development Systems, P.O. Box 520, Waltham, MA 02254.
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*/
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#include "uucnfi.h"
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#if USE_RCS_ID
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const char _uuconf_vport_rcsid[] = "$Id: vport.c,v 1.1 1993/08/04 19:35:27 jtc Exp $";
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#endif
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#include <errno.h>
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#include <ctype.h>
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/* Find a port in the V2 configuration files by name, baud rate, and
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special purpose function. */
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int
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uuconf_v2_find_port (pglobal, zname, ibaud, ihighbaud, pifn, pinfo, qport)
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pointer pglobal;
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const char *zname;
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long ibaud;
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long ihighbaud;
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int (*pifn) P((struct uuconf_port *, pointer));
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pointer pinfo;
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struct uuconf_port *qport;
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{
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struct sglobal *qglobal = (struct sglobal *) pglobal;
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FILE *e;
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char *zline;
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size_t cline;
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char **pzsplit;
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size_t csplit;
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int iret;
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int cchars;
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e = fopen (qglobal->qprocess->zv2devices, "r");
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if (e == NULL)
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{
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if (FNO_SUCH_FILE ())
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return UUCONF_NOT_FOUND;
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qglobal->ierrno = errno;
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qglobal->zfilename = qglobal->qprocess->zv2devices;
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return (UUCONF_FOPEN_FAILED
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| UUCONF_ERROR_ERRNO
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| UUCONF_ERROR_FILENAME);
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}
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zline = NULL;
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cline = 0;
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pzsplit = NULL;
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csplit = 0;
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iret = UUCONF_NOT_FOUND;
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qglobal->ilineno = 0;
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while ((cchars = getline (&zline, &cline, e)) > 0)
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{
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int ctoks;
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char *zend;
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long ilow, ihigh;
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pointer pblock;
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++qglobal->ilineno;
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iret = UUCONF_NOT_FOUND;
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--cchars;
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if (zline[cchars] == '\n')
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zline[cchars] = '\0';
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zline[strcspn (zline, "#")] = '\0';
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ctoks = _uuconf_istrsplit (zline, '\0', &pzsplit, &csplit);
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if (ctoks < 0)
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{
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qglobal->ierrno = errno;
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iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
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break;
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}
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/* An entry in L-devices is
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type device dial-device baud dialer
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The type (normally "ACU") is treated as the name. */
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/* If there aren't enough entries, ignore the line; this
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should probably do something more useful. */
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if (ctoks < 4)
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continue;
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/* Make sure the name matches any argument. */
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if (zname != NULL
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&& strcmp (pzsplit[0], zname) != 0)
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continue;
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/* Get the baud rate. */
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ilow = strtol (pzsplit[3], &zend, 10);
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if (*zend == '-')
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ihigh = strtol (zend + 1, (char **) NULL, 10);
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else
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ihigh = ilow;
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/* Make sure the baud rate matches any argument. */
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if (ibaud != 0
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&& ilow != 0
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&& (ilow > ibaud || ihigh < ibaud))
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continue;
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/* Now we must construct the port information, so that we can
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pass it to pifn. The port type is determined by it's name,
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unfortunately. The name "DIR" is used for a direct port, and
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anything else for a modem port. */
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pblock = NULL;
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_uuconf_uclear_port (qport);
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qport->uuconf_zname = pzsplit[0];
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if (strcmp (pzsplit[0], "DIR") == 0)
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{
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qport->uuconf_ttype = UUCONF_PORTTYPE_DIRECT;
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qport->uuconf_u.uuconf_sdirect.uuconf_zdevice = pzsplit[1];
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qport->uuconf_u.uuconf_sdirect.uuconf_ibaud = ilow;
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}
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else
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{
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qport->uuconf_ttype = UUCONF_PORTTYPE_MODEM;
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qport->uuconf_u.uuconf_smodem.uuconf_zdevice = pzsplit[1];
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if (strcmp (pzsplit[2], "-") != 0)
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qport->uuconf_u.uuconf_smodem.uuconf_zdial_device = pzsplit[2];
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else
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qport->uuconf_u.uuconf_smodem.uuconf_zdial_device = NULL;
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if (ilow == ihigh)
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{
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qport->uuconf_u.uuconf_smodem.uuconf_ibaud = ilow;
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qport->uuconf_u.uuconf_smodem.uuconf_ilowbaud = 0L;
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qport->uuconf_u.uuconf_smodem.uuconf_ihighbaud = 0L;
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}
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else
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{
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qport->uuconf_u.uuconf_smodem.uuconf_ibaud = 0L;
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qport->uuconf_u.uuconf_smodem.uuconf_ilowbaud = ilow;
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qport->uuconf_u.uuconf_smodem.uuconf_ihighbaud = ihigh;
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}
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qport->uuconf_u.uuconf_smodem.uuconf_fcarrier = TRUE;
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if (ctoks < 5)
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qport->uuconf_u.uuconf_smodem.uuconf_pzdialer = NULL;
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else
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{
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size_t c;
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char **pzd;
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/* We support dialer/token pairs, although normal V2
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doesn't. */
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pblock = uuconf_malloc_block ();
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if (pblock == NULL)
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{
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qglobal->ierrno = errno;
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iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
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break;
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}
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c = (ctoks - 4) * sizeof (char *);
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pzd = (char **) uuconf_malloc (pblock, c + sizeof (char *));
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if (pzd == NULL)
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{
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qglobal->ierrno = errno;
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uuconf_free_block (pblock);
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iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
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break;
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}
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memcpy ((pointer) pzd, (pointer) (pzsplit + 4), c);
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pzd[ctoks - 4] = NULL;
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qport->uuconf_u.uuconf_smodem.uuconf_pzdialer = pzd;
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}
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qport->uuconf_u.uuconf_smodem.uuconf_qdialer = NULL;
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}
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if (pifn != NULL)
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{
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iret = (*pifn) (qport, pinfo);
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if (iret != UUCONF_SUCCESS)
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{
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if (pblock != NULL)
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uuconf_free_block (pblock);
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if (iret != UUCONF_NOT_FOUND)
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break;
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continue;
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}
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}
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/* This is the port we want. */
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if (pblock == NULL)
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{
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pblock = uuconf_malloc_block ();
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if (pblock == NULL)
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{
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qglobal->ierrno = errno;
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iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
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break;
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}
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}
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if (uuconf_add_block (pblock, zline) != 0)
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{
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qglobal->ierrno = errno;
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uuconf_free_block (pblock);
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iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
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break;
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}
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zline = NULL;
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qport->uuconf_palloc = pblock;
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break;
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}
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(void) fclose (e);
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if (zline != NULL)
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free ((pointer) zline);
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if (pzsplit != NULL)
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free ((pointer) pzsplit);
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if (iret != UUCONF_SUCCESS && iret != UUCONF_NOT_FOUND)
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{
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qglobal->zfilename = qglobal->qprocess->zv2devices;
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iret |= UUCONF_ERROR_FILENAME | UUCONF_ERROR_LINENO;
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}
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return iret;
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}
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