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- /* 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 1.9 1995/06/21 19:24:48 ian Rel $";
- #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;
- }
-