300 lines
7.4 KiB
C
300 lines
7.4 KiB
C
/* tport.c
|
||
Find a port in the Taylor UUCP configuration files.
|
||
|
||
Copyright (C) 1992, 1993 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||
|
||
The author of the program may be contacted at ian@airs.com or
|
||
c/o Cygnus Support, 48 Grove Street, Somerville, MA 02144.
|
||
*/
|
||
|
||
#include "uucnfi.h"
|
||
|
||
#if USE_RCS_ID
|
||
const char _uuconf_tport_rcsid[] = "$Id: tport.c,v 1.3 1995/08/24 05:22:13 jtc Exp $";
|
||
#endif
|
||
|
||
#include <errno.h>
|
||
|
||
static int ipport P((pointer pglobal, int argc, char **argv, pointer pvar,
|
||
pointer pinfo));
|
||
static int ipunknown P((pointer pglobal, int argc, char **argv,
|
||
pointer pvar, pointer pinfo));
|
||
|
||
/* Find a port in the Taylor UUCP configuration files by name, baud
|
||
rate, and special purpose function. */
|
||
|
||
int
|
||
uuconf_taylor_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;
|
||
FILE *e;
|
||
pointer pblock;
|
||
char *zfree;
|
||
int iret;
|
||
char **pz;
|
||
|
||
if (ihighbaud == 0L)
|
||
ihighbaud = ibaud;
|
||
|
||
e = NULL;
|
||
pblock = NULL;
|
||
zfree = NULL;
|
||
iret = UUCONF_NOT_FOUND;
|
||
|
||
for (pz = qglobal->qprocess->pzportfiles; *pz != NULL; pz++)
|
||
{
|
||
struct uuconf_cmdtab as[2];
|
||
char *zport;
|
||
struct uuconf_port sdefault;
|
||
int ilineno;
|
||
|
||
e = fopen (*pz, "r");
|
||
if (e == NULL)
|
||
{
|
||
if (FNO_SUCH_FILE ())
|
||
continue;
|
||
qglobal->ierrno = errno;
|
||
iret = UUCONF_FOPEN_FAILED | UUCONF_ERROR_ERRNO;
|
||
break;
|
||
}
|
||
|
||
qglobal->ilineno = 0;
|
||
|
||
/* Gather the default information from the top of the file. We
|
||
do this by handling the "port" command ourselves and passing
|
||
every other command to _uuconf_iport_cmd via ipunknown. The
|
||
value of zport will be an malloc block. */
|
||
as[0].uuconf_zcmd = "port";
|
||
as[0].uuconf_itype = UUCONF_CMDTABTYPE_FN | 2;
|
||
as[0].uuconf_pvar = (pointer) &zport;
|
||
as[0].uuconf_pifn = ipport;
|
||
|
||
as[1].uuconf_zcmd = NULL;
|
||
|
||
pblock = uuconf_malloc_block ();
|
||
if (pblock == NULL)
|
||
{
|
||
qglobal->ierrno = errno;
|
||
iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
|
||
break;
|
||
}
|
||
|
||
_uuconf_uclear_port (&sdefault);
|
||
sdefault.uuconf_palloc = pblock;
|
||
zport = NULL;
|
||
iret = uuconf_cmd_file (pglobal, e, as, (pointer) &sdefault,
|
||
ipunknown, UUCONF_CMDTABFLAG_BACKSLASH,
|
||
pblock);
|
||
if (iret != UUCONF_SUCCESS)
|
||
{
|
||
zfree = zport;
|
||
break;
|
||
}
|
||
|
||
/* Now skip until we find a port with a matching name. If the
|
||
zname argument is NULL, we will have to read every port. */
|
||
iret = UUCONF_NOT_FOUND;
|
||
while (zport != NULL)
|
||
{
|
||
uuconf_cmdtabfn piunknown;
|
||
boolean fmatch;
|
||
|
||
if (zname == NULL || strcmp (zname, zport) == 0)
|
||
{
|
||
piunknown = ipunknown;
|
||
*qport = sdefault;
|
||
qport->uuconf_zname = zport;
|
||
zfree = zport;
|
||
fmatch = TRUE;
|
||
}
|
||
else
|
||
{
|
||
piunknown = NULL;
|
||
free ((pointer) zport);
|
||
fmatch = FALSE;
|
||
}
|
||
|
||
zport = NULL;
|
||
ilineno = qglobal->ilineno;
|
||
iret = uuconf_cmd_file (pglobal, e, as, (pointer) qport,
|
||
piunknown, UUCONF_CMDTABFLAG_BACKSLASH,
|
||
pblock);
|
||
qglobal->ilineno += ilineno;
|
||
if (iret != UUCONF_SUCCESS)
|
||
break;
|
||
iret = UUCONF_NOT_FOUND;
|
||
|
||
/* We may have just gathered information about a port. See
|
||
if it matches the name, the baud rate and the special
|
||
function. */
|
||
if (fmatch)
|
||
{
|
||
if (ibaud != 0)
|
||
{
|
||
if (qport->uuconf_ttype == UUCONF_PORTTYPE_MODEM)
|
||
{
|
||
long imbaud, imhigh, imlow;
|
||
|
||
imbaud = qport->uuconf_u.uuconf_smodem.uuconf_ibaud;
|
||
imhigh = qport->uuconf_u.uuconf_smodem.uuconf_ihighbaud;
|
||
imlow = qport->uuconf_u.uuconf_smodem.uuconf_ilowbaud;
|
||
|
||
if (imbaud == 0 && imlow == 0)
|
||
;
|
||
else if (ibaud <= imbaud && imbaud <= ihighbaud)
|
||
;
|
||
else if (imlow != 0
|
||
&& imlow <= ihighbaud
|
||
&& imhigh >= ibaud)
|
||
;
|
||
else
|
||
fmatch = FALSE;
|
||
}
|
||
else if (qport->uuconf_ttype == UUCONF_PORTTYPE_DIRECT)
|
||
{
|
||
long idbaud;
|
||
|
||
idbaud = qport->uuconf_u.uuconf_sdirect.uuconf_ibaud;
|
||
if (idbaud != 0 && idbaud != ibaud)
|
||
fmatch = FALSE;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (fmatch)
|
||
{
|
||
if (pifn != NULL)
|
||
{
|
||
iret = (*pifn) (qport, pinfo);
|
||
if (iret == UUCONF_NOT_FOUND)
|
||
fmatch = FALSE;
|
||
else if (iret != UUCONF_SUCCESS)
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (fmatch)
|
||
{
|
||
if (uuconf_add_block (pblock, zfree) == 0)
|
||
{
|
||
zfree = NULL;
|
||
iret = UUCONF_SUCCESS;
|
||
}
|
||
else
|
||
{
|
||
qglobal->ierrno = errno;
|
||
iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
|
||
}
|
||
break;
|
||
}
|
||
|
||
if (zfree != NULL)
|
||
{
|
||
free ((pointer) zfree);
|
||
zfree = NULL;
|
||
}
|
||
}
|
||
|
||
(void) fclose (e);
|
||
e = NULL;
|
||
|
||
if (iret != UUCONF_NOT_FOUND)
|
||
break;
|
||
|
||
uuconf_free_block (pblock);
|
||
pblock = NULL;
|
||
}
|
||
|
||
if (e != NULL)
|
||
(void) fclose (e);
|
||
if (zfree != NULL)
|
||
free ((pointer) zfree);
|
||
if (iret != UUCONF_SUCCESS && pblock != NULL)
|
||
uuconf_free_block (pblock);
|
||
|
||
if (iret != UUCONF_SUCCESS && iret != UUCONF_NOT_FOUND)
|
||
{
|
||
qglobal->zfilename = *pz;
|
||
iret |= UUCONF_ERROR_FILENAME;
|
||
}
|
||
|
||
return iret;
|
||
}
|
||
|
||
/* Handle a "port" command. This copies the string onto the heap and
|
||
returns the pointer in *pvar. It returns UUCONF_CMDTABRET_EXIT to
|
||
force uuconf_cmd_file to stop reading and return to the code above,
|
||
which will then check the port just read to see if it matches. */
|
||
|
||
/*ARGSUSED*/
|
||
static int
|
||
ipport (pglobal, argc, argv, pvar, pinfo)
|
||
pointer pglobal;
|
||
int argc;
|
||
char **argv;
|
||
pointer pvar;
|
||
pointer pinfo;
|
||
{
|
||
struct sglobal *qglobal = (struct sglobal *) pglobal;
|
||
char **pz = (char **) pvar;
|
||
size_t csize;
|
||
|
||
csize = strlen (argv[1]) + 1;
|
||
*pz = malloc (csize);
|
||
if (*pz == NULL)
|
||
{
|
||
qglobal->ierrno = errno;
|
||
return (UUCONF_MALLOC_FAILED
|
||
| UUCONF_ERROR_ERRNO
|
||
| UUCONF_CMDTABRET_EXIT);
|
||
}
|
||
memcpy ((pointer) *pz, (pointer) argv[1], csize);
|
||
return UUCONF_CMDTABRET_EXIT;
|
||
}
|
||
|
||
/* Handle an unknown command by passing it on to _uuconf_iport_cmd,
|
||
which will parse it into the port structure. */
|
||
|
||
/*ARGSUSED*/
|
||
static int
|
||
ipunknown (pglobal, argc, argv, pvar, pinfo)
|
||
pointer pglobal;
|
||
int argc;
|
||
char **argv;
|
||
pointer pvar;
|
||
pointer pinfo;
|
||
{
|
||
struct sglobal *qglobal = (struct sglobal *) pglobal;
|
||
struct uuconf_port *qport = (struct uuconf_port *) pinfo;
|
||
int iret;
|
||
|
||
iret = _uuconf_iport_cmd (qglobal, argc, argv, qport);
|
||
if (UUCONF_ERROR_VALUE (iret) != UUCONF_SUCCESS)
|
||
iret |= UUCONF_CMDTABRET_EXIT;
|
||
return iret;
|
||
}
|