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- /* hport.c
- Find a port in the HDB 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_hport_rcsid[] = "$Id: hport.c,v 1.14 1995/06/21 19:22:58 ian Rel $";
- #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;
- char ***ppzdialer;
-
- ++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;
- qport->uuconf_u.uuconf_sdirect.uuconf_fcarrier = FALSE;
- qport->uuconf_u.uuconf_sdirect.uuconf_fhardflow = TRUE;
- ppzdialer = NULL;
- }
- 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];
- ppzdialer = &qport->uuconf_u.uuconf_stcp.uuconf_pzdialer;
- }
- else if (ctoks >= 5
- && (strcmp (pzsplit[4], "TLI") == 0
- || strcmp (pzsplit[4], "TLIS") == 0))
- {
- 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;
- 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);
- ppzdialer = &qport->uuconf_u.uuconf_stli.uuconf_pzdialer;
- }
- 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;
- qport->uuconf_u.uuconf_smodem.uuconf_fhardflow = TRUE;
- qport->uuconf_u.uuconf_smodem.uuconf_qdialer = NULL;
- ppzdialer = &qport->uuconf_u.uuconf_smodem.uuconf_pzdialer;
- }
-
- if (ppzdialer != NULL)
- {
- if (ctoks < 5)
- *ppzdialer = 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;
-
- *ppzdialer = pzd;
- }
- }
-
- 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;
-
- iret = UUCONF_SUCCESS;
-
- 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;
- }
-