631 lines
17 KiB
C
631 lines
17 KiB
C
/* hsinfo.c
|
||
Get information about a system from the HDB configuration files.
|
||
|
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Copyright (C) 1992, 1993 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
|
||
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.
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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 Cygnus Support, Building 200, 1 Kendall Square, Cambridge, MA 02139.
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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_hsinfo_rcsid[] = "$Id: hsinfo.c,v 1.10 1994/01/30 21:14:29 ian Rel $";
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#endif
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#include <errno.h>
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#include <ctype.h>
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static int ihadd_machine_perm P((struct sglobal *qglobal,
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struct uuconf_system *qsys,
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struct shpermissions *qperm));
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static int ihadd_logname_perm P((struct sglobal *qglobal,
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struct uuconf_system *qsys,
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struct shpermissions *qperm));
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/* Get the information for a particular system from the HDB
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configuration files. This does not make sure that all the default
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values are set. */
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int
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_uuconf_ihdb_system_internal (qglobal, zsystem, qsys)
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struct sglobal *qglobal;
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const char *zsystem;
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struct uuconf_system *qsys;
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{
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int iret;
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struct shpermissions *qperm;
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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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char **pzcomma;
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size_t ccomma;
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pointer pblock;
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char **pz;
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boolean ffound_machine, ffound_login;
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struct shpermissions *qother_machine;
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struct uuconf_system *qalt;
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if (! qglobal->qprocess->fhdb_read_permissions)
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{
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iret = _uuconf_ihread_permissions (qglobal);
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if (iret != UUCONF_SUCCESS)
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return iret;
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}
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/* First look through the Permissions information to see if this is
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an alias for some system. I assume that an alias applies to the
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first name in the corresponding MACHINE entry. */
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for (qperm = qglobal->qprocess->qhdb_permissions;
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qperm != NULL;
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qperm = qperm->qnext)
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{
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if (qperm->pzalias == NULL
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|| qperm->pzmachine == NULL
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|| qperm->pzalias == (char **) &_uuconf_unset
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|| qperm->pzmachine == (char **) &_uuconf_unset)
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continue;
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for (pz = qperm->pzalias; *pz != NULL; pz++)
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{
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if (strcmp (*pz, zsystem) == 0)
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{
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zsystem = qperm->pzmachine[0];
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break;
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}
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}
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if (*pz != NULL)
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break;
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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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pzcomma = NULL;
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ccomma = 0;
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pblock = NULL;
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iret = UUCONF_SUCCESS;
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for (pz = qglobal->qprocess->pzhdb_systems; *pz != NULL; pz++)
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{
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FILE *e;
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int cchars;
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qglobal->ilineno = 0;
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e = fopen (*pz, "r");
|
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if (e == NULL)
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{
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if (FNO_SUCH_FILE ())
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continue;
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qglobal->ierrno = errno;
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iret = UUCONF_FOPEN_FAILED | UUCONF_ERROR_ERRNO;
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break;
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}
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while ((cchars = _uuconf_getline (qglobal, &zline, &cline, e)) > 0)
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{
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int ctoks, ctimes, i;
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struct uuconf_system *qset;
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char *z, *zretry;
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int cretry;
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++qglobal->ilineno;
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--cchars;
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if (zline[cchars] == '\n')
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zline[cchars] = '\0';
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if (isspace (BUCHAR (zline[0])) || zline[0] == '#')
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continue;
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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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/* If this isn't the system we're looking for, keep reading
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the file. */
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if (ctoks < 1
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|| strcmp (zsystem, pzsplit[0]) != 0)
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continue;
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|
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/* If this is the first time we've found the system, we want
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to set *qsys directly. Otherwise, we allocate a new
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alternate. */
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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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_uuconf_uclear_system (qsys);
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qsys->uuconf_palloc = pblock;
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qset = qsys;
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}
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else
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{
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struct uuconf_system **pq;
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qset = ((struct uuconf_system *)
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uuconf_malloc (pblock, sizeof (struct uuconf_system)));
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if (qset == 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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_uuconf_uclear_system (qset);
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for (pq = &qsys->uuconf_qalternate;
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*pq != NULL;
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pq = &(*pq)->uuconf_qalternate)
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;
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*pq = qset;
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}
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/* Add this line to the memory block we are building for the
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system. */
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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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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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cline = 0;
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/* The format of a line in Systems is
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system time device speed phone chat
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For example,
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airs Any ACU 9600 5551212 ogin: foo pass: bar
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*/
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/* Get the system name. */
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qset->uuconf_zname = pzsplit[0];
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qset->uuconf_fcall = TRUE;
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qset->uuconf_fcalled = FALSE;
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if (ctoks < 2)
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continue;
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/* A time string is "time/grade,time/grade;retry". A
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missing grade is taken as BGRADE_LOW. */
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zretry = strchr (pzsplit[1], ';');
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if (zretry == NULL)
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cretry = 0;
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else
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{
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*zretry = '\0';
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cretry = (int) strtol (zretry + 1, (char **) NULL, 10);
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}
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ctimes = _uuconf_istrsplit (pzsplit[1], ',', &pzcomma, &ccomma);
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if (ctimes < 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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for (i = 0; i < ctimes; i++)
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{
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char *zslash;
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char bgrade;
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z = pzcomma[i];
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zslash = strchr (z, '/');
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if (zslash == NULL)
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bgrade = UUCONF_GRADE_LOW;
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else
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{
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*zslash = '\0';
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bgrade = zslash[1];
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if (! UUCONF_GRADE_LEGAL (bgrade))
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bgrade = UUCONF_GRADE_LOW;
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}
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iret = _uuconf_itime_parse (qglobal, z, (long) bgrade,
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cretry, _uuconf_itime_grade_cmp,
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&qset->uuconf_qtimegrade,
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pblock);
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if (iret != UUCONF_SUCCESS)
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break;
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/* Treat any time/grade setting as both a timegrade and
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a call-timegrade. */
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if (bgrade != UUCONF_GRADE_LOW)
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qset->uuconf_qcalltimegrade = qset->uuconf_qtimegrade;
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}
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if (iret != UUCONF_SUCCESS)
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break;
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if (ctoks < 3)
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continue;
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/* Pick up the device name. It can be followed by a comma
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and a list of protocols. */
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qset->uuconf_zport = pzsplit[2];
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z = strchr (pzsplit[2], ',');
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if (z != NULL)
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{
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qset->uuconf_zprotocols = z + 1;
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*z = '\0';
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}
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if (ctoks < 4)
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continue;
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/* The speed entry can be a numeric speed, or a range of
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speeds, or "Any", or "-". If it starts with a letter,
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the initial nonnumeric prefix is a modem class, which
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gets appended to the port name. */
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z = pzsplit[3];
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if (strcasecmp (z, "Any") != 0
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&& strcmp (z, "-") != 0)
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{
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char *zend;
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|
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while (*z != '\0' && ! isdigit (BUCHAR (*z)))
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++z;
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qset->uuconf_ibaud = strtol (z, &zend, 10);
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if (*zend == '-')
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qset->uuconf_ihighbaud = strtol (zend + 1, (char **) NULL,
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10);
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if (z != pzsplit[3])
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{
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size_t cport, cclass;
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cport = strlen (pzsplit[2]);
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cclass = z - pzsplit[3];
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qset->uuconf_zport = uuconf_malloc (pblock,
|
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cport + cclass + 1);
|
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if (qset->uuconf_zport == 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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memcpy ((pointer) qset->uuconf_zport, (pointer) pzsplit[2],
|
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cport);
|
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memcpy ((pointer) (qset->uuconf_zport + cport),
|
||
(pointer) pzsplit[3], cclass);
|
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qset->uuconf_zport[cport + cclass] = '\0';
|
||
}
|
||
}
|
||
|
||
if (ctoks < 5)
|
||
continue;
|
||
|
||
/* Get the phone number. */
|
||
qset->uuconf_zphone = pzsplit[4];
|
||
|
||
if (ctoks < 6)
|
||
continue;
|
||
|
||
/* Get the chat script. We just hand this off to the chat
|
||
script processor, so that it will parse subsend and
|
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subexpect strings correctly. */
|
||
pzsplit[4] = (char *) "chat";
|
||
iret = _uuconf_ichat_cmd (qglobal, ctoks - 4, pzsplit + 4,
|
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&qset->uuconf_schat, pblock);
|
||
iret &=~ UUCONF_CMDTABRET_KEEP;
|
||
if (iret != UUCONF_SUCCESS)
|
||
break;
|
||
}
|
||
|
||
(void) fclose (e);
|
||
|
||
if (iret != UUCONF_SUCCESS)
|
||
break;
|
||
}
|
||
|
||
if (zline != NULL)
|
||
free ((pointer) zline);
|
||
if (pzsplit != NULL)
|
||
free ((pointer) pzsplit);
|
||
if (pzcomma != NULL)
|
||
free ((pointer) pzcomma);
|
||
|
||
if (iret != UUCONF_SUCCESS)
|
||
{
|
||
qglobal->zfilename = *pz;
|
||
return iret | UUCONF_ERROR_FILENAME | UUCONF_ERROR_LINENO;
|
||
}
|
||
|
||
if (pblock == NULL)
|
||
return UUCONF_NOT_FOUND;
|
||
|
||
/* Now we have to put in the Permissions information. The relevant
|
||
Permissions entries are those with this system in the MACHINE
|
||
list and (if this system does not have a VALIDATE entry) those
|
||
with a LOGNAME list but no MACHINE list. If no entry is found
|
||
with this system in the MACHINE list, then we must look for an
|
||
entry with "OTHER" in the MACHINE list. */
|
||
ffound_machine = FALSE;
|
||
ffound_login = FALSE;
|
||
qother_machine = NULL;
|
||
for (qperm = qglobal->qprocess->qhdb_permissions;
|
||
qperm != NULL;
|
||
qperm = qperm->qnext)
|
||
{
|
||
boolean fmachine;
|
||
|
||
/* MACHINE=OTHER is recognized specially. It appears that OTHER
|
||
need only be recognized by itself, not when combined with
|
||
other machine names. */
|
||
if (qother_machine == NULL
|
||
&& qperm->pzmachine != NULL
|
||
&& qperm->pzmachine != (char **) &_uuconf_unset
|
||
&& qperm->pzmachine[0][0] == 'O'
|
||
&& strcmp (qperm->pzmachine[0], "OTHER") == 0)
|
||
qother_machine = qperm;
|
||
|
||
/* If this system is named in a MACHINE entry, we must add the
|
||
appropriate information to every alternate that could be used
|
||
for calling out. */
|
||
fmachine = FALSE;
|
||
if (! ffound_machine
|
||
&& qperm->pzmachine != NULL
|
||
&& qperm->pzmachine != (char **) &_uuconf_unset)
|
||
{
|
||
for (pz = qperm->pzmachine; *pz != NULL; pz++)
|
||
{
|
||
if ((*pz)[0] == zsystem[0]
|
||
&& strcmp (*pz, zsystem) == 0)
|
||
{
|
||
for (qalt = qsys;
|
||
qalt != NULL;
|
||
qalt = qalt->uuconf_qalternate)
|
||
{
|
||
if (qalt->uuconf_fcall)
|
||
{
|
||
iret = ihadd_machine_perm (qglobal, qalt, qperm);
|
||
if (iret != UUCONF_SUCCESS)
|
||
return iret;
|
||
}
|
||
}
|
||
|
||
fmachine = TRUE;
|
||
ffound_machine = TRUE;
|
||
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* A LOGNAME line applies to this machine if it is listed in the
|
||
corresponding VALIDATE entry, or if it is not listed in any
|
||
VALIDATE entry. On this pass through the Permissions entry
|
||
we pick up the information if the system appears in a
|
||
VALIDATE entry; if it does not, we make another pass to put
|
||
in all the LOGNAME lines. */
|
||
if (qperm->pzlogname != NULL
|
||
&& qperm->pzlogname != (char **) &_uuconf_unset
|
||
&& qperm->pzvalidate != NULL
|
||
&& qperm->pzvalidate != (char **) &_uuconf_unset)
|
||
{
|
||
for (pz = qperm->pzvalidate; *pz != NULL; ++pz)
|
||
if ((*pz)[0] == zsystem[0]
|
||
&& strcmp (*pz, zsystem) == 0)
|
||
break;
|
||
if (*pz != NULL)
|
||
{
|
||
for (pz = qperm->pzlogname; *pz != NULL; ++pz)
|
||
{
|
||
/* If this LOGNAME line is also a matching MACHINE
|
||
line, we can add the LOGNAME permissions to the
|
||
first alternate. Otherwise, we must create a new
|
||
alternate. We cannot put a LOGNAME line in the
|
||
first alternate if MACHINE does not match,
|
||
because certain permissions (e.g. READ) may be
|
||
specified by both types of lines, and we must use
|
||
LOGNAME entries only when accepting calls and
|
||
MACHINE entries only when placing calls. */
|
||
if (fmachine
|
||
&& (qsys->uuconf_zcalled_login == NULL
|
||
|| (qsys->uuconf_zcalled_login
|
||
== (char *) &_uuconf_unset)))
|
||
{
|
||
qsys->uuconf_zcalled_login = *pz;
|
||
iret = ihadd_logname_perm (qglobal, qsys, qperm);
|
||
}
|
||
else
|
||
{
|
||
struct uuconf_system *qnew;
|
||
struct uuconf_system **pq;
|
||
|
||
qnew = ((struct uuconf_system *)
|
||
uuconf_malloc (pblock,
|
||
sizeof (struct uuconf_system)));
|
||
if (qnew == NULL)
|
||
{
|
||
qglobal->ierrno = errno;
|
||
return UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
|
||
}
|
||
|
||
*qnew = *qsys;
|
||
qnew->uuconf_qalternate = NULL;
|
||
for (pq = &qsys->uuconf_qalternate;
|
||
*pq != NULL;
|
||
pq = &(*pq)->uuconf_qalternate)
|
||
;
|
||
*pq = qnew;
|
||
|
||
qnew->uuconf_zcalled_login = *pz;
|
||
qnew->uuconf_fcall = FALSE;
|
||
iret = ihadd_logname_perm (qglobal, qnew, qperm);
|
||
}
|
||
|
||
if (iret != UUCONF_SUCCESS)
|
||
return iret;
|
||
}
|
||
|
||
ffound_login = TRUE;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* If we didn't find an entry for the machine, we must use the
|
||
MACHINE=OTHER entry, if any. */
|
||
if (! ffound_machine && qother_machine != NULL)
|
||
{
|
||
for (qalt = qsys; qalt != NULL; qalt = qalt->uuconf_qalternate)
|
||
{
|
||
if (qalt->uuconf_fcall)
|
||
{
|
||
iret = ihadd_machine_perm (qglobal, qalt, qother_machine);
|
||
if (iret != UUCONF_SUCCESS)
|
||
return iret;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* If this system was not listed in any VALIDATE entry, then we must
|
||
add a called-login for each LOGNAME entry in Permissions. */
|
||
if (! ffound_login)
|
||
{
|
||
for (qperm = qglobal->qprocess->qhdb_permissions;
|
||
qperm != NULL;
|
||
qperm = qperm->qnext)
|
||
{
|
||
if (qperm->pzlogname == NULL
|
||
|| qperm->pzlogname == (char **) &_uuconf_unset)
|
||
continue;
|
||
|
||
for (pz = qperm->pzlogname; *pz != NULL; pz++)
|
||
{
|
||
struct uuconf_system *qnew;
|
||
struct uuconf_system **pq;
|
||
|
||
qnew = ((struct uuconf_system *)
|
||
uuconf_malloc (pblock,
|
||
sizeof (struct uuconf_system)));
|
||
if (qnew == NULL)
|
||
{
|
||
qglobal->ierrno = errno;
|
||
return UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
|
||
}
|
||
|
||
*qnew = *qsys;
|
||
qnew->uuconf_qalternate = NULL;
|
||
for (pq = &qsys->uuconf_qalternate;
|
||
*pq != NULL;
|
||
pq = &(*pq)->uuconf_qalternate)
|
||
;
|
||
*pq = qnew;
|
||
|
||
/* We recognize LOGNAME=OTHER specially, although this
|
||
appears to be an SCO innovation. */
|
||
if (strcmp (*pz, "OTHER") == 0)
|
||
qnew->uuconf_zcalled_login = (char *) "ANY";
|
||
else
|
||
qnew->uuconf_zcalled_login = *pz;
|
||
qnew->uuconf_fcall = FALSE;
|
||
iret = ihadd_logname_perm (qglobal, qnew, qperm);
|
||
if (iret != UUCONF_SUCCESS)
|
||
return iret;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* HDB permits local requests to receive to any directory, which is
|
||
not the default put in by _uuconf_isystem_basic_default. We set
|
||
it here instead. */
|
||
for (qalt = qsys; qalt != NULL; qalt = qalt->uuconf_qalternate)
|
||
{
|
||
iret = _uuconf_iadd_string (qglobal, (char *) ZROOTDIR,
|
||
FALSE, FALSE,
|
||
&qalt->uuconf_pzlocal_receive,
|
||
pblock);
|
||
if (iret != UUCONF_SUCCESS)
|
||
return iret;
|
||
}
|
||
|
||
/* HDB does not have a maximum number of retries if a retry time is
|
||
given in the time field. */
|
||
if (qsys->uuconf_qtimegrade != NULL
|
||
&& qsys->uuconf_qtimegrade != (struct uuconf_timespan *) &_uuconf_unset
|
||
&& qsys->uuconf_qtimegrade->uuconf_cretry > 0)
|
||
qsys->uuconf_cmax_retries = 0;
|
||
|
||
return UUCONF_SUCCESS;
|
||
}
|
||
|
||
/* Add the settings of a MACHINE line in Permissions to a system. */
|
||
|
||
/*ARGSIGNORED*/
|
||
static int
|
||
ihadd_machine_perm (qglobal, qsys, qperm)
|
||
struct sglobal *qglobal;
|
||
struct uuconf_system *qsys;
|
||
struct shpermissions *qperm;
|
||
{
|
||
if (qperm->frequest >= 0)
|
||
qsys->uuconf_fsend_request = qperm->frequest;
|
||
else
|
||
qsys->uuconf_fsend_request = FALSE;
|
||
qsys->uuconf_pzremote_send = qperm->pzread;
|
||
qsys->uuconf_pzremote_receive = qperm->pzwrite;
|
||
qsys->uuconf_pzcmds = qperm->pzcommands;
|
||
qsys->uuconf_zlocalname = qperm->zmyname;
|
||
qsys->uuconf_zpubdir = qperm->zpubdir;
|
||
qsys->uuconf_pzalias = qperm->pzalias;
|
||
|
||
return UUCONF_SUCCESS;
|
||
}
|
||
|
||
/* Add the settings of a LOGNAME line in Permissions to a system. */
|
||
|
||
/*ARGSIGNORED*/
|
||
static int
|
||
ihadd_logname_perm (qglobal, qsys, qperm)
|
||
struct sglobal *qglobal;
|
||
struct uuconf_system *qsys;
|
||
struct shpermissions *qperm;
|
||
{
|
||
qsys->uuconf_fcalled = TRUE;
|
||
if (qperm->frequest >= 0)
|
||
qsys->uuconf_fsend_request = qperm->frequest;
|
||
else
|
||
qsys->uuconf_fsend_request = FALSE;
|
||
qsys->uuconf_fcalled_transfer = qperm->fsendfiles;
|
||
qsys->uuconf_pzremote_send = qperm->pzread;
|
||
qsys->uuconf_pzremote_receive = qperm->pzwrite;
|
||
qsys->uuconf_fcallback = qperm->fcallback;
|
||
qsys->uuconf_zlocalname = qperm->zmyname;
|
||
qsys->uuconf_zpubdir = qperm->zpubdir;
|
||
|
||
return UUCONF_SUCCESS;
|
||
}
|