576 lines
14 KiB
C
576 lines
14 KiB
C
/* vsinfo.c
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Get information about a system from 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_vsinfo_rcsid[] = "$Id: vsinfo.c,v 1.1 1993/08/04 19:35:28 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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/* Get the information for a particular system from the V2
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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_iv2_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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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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FILE *e;
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int cchars;
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pointer pblock;
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int iret;
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e = fopen (qglobal->qprocess->zv2systems, "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->zv2systems;
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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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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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qglobal->ilineno = 0;
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while ((cchars = getline (&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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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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/* 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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/* 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 = TRUE;
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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 missing
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grade is taken as BGRADE_LOW. On some versions the retry
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time is actually separated by a comma, which won't work right
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here. */
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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, cretry,
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_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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}
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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 and a
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list of protocols (this is not actually supported by most V2
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systems, but it should be compatible). */
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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 the port is "TCP", we set up a system specific port. The
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baud rate becomes the service number and the phone number
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becomes the address (still stored in qsys->zphone). */
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if (strcmp (qset->uuconf_zport, "TCP") == 0)
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{
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qset->uuconf_zport = NULL;
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qset->uuconf_qport = ((struct uuconf_port *)
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uuconf_malloc (pblock,
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sizeof (struct uuconf_port)));
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if (qset->uuconf_qport == 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_port (qset->uuconf_qport);
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qset->uuconf_qport->uuconf_zname = (char *) "TCP";
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qset->uuconf_qport->uuconf_ttype = UUCONF_PORTTYPE_TCP;
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qset->uuconf_qport->uuconf_ireliable
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= (UUCONF_RELIABLE_ENDTOEND | UUCONF_RELIABLE_RELIABLE
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| UUCONF_RELIABLE_EIGHT | UUCONF_RELIABLE_FULLDUPLEX
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| UUCONF_RELIABLE_SPECIFIED);
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if (ctoks < 4)
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qset->uuconf_qport->uuconf_u.uuconf_stcp.uuconf_zport
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= (char *) "uucp";
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else
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qset->uuconf_qport->uuconf_u.uuconf_stcp.uuconf_zport
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= pzsplit[3];
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}
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if (ctoks < 4)
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continue;
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qset->uuconf_ibaud = strtol (pzsplit[3], (char **) NULL, 10);
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if (ctoks < 5)
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continue;
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/* Get the phone number. */
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qset->uuconf_zphone = pzsplit[4];
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if (ctoks < 6)
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continue;
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/* Get the chat script. We just hand this off to the chat
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script processor, so that it will parse subsend and
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subexpect strings correctly. */
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pzsplit[4] = (char *) "chat";
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iret = _uuconf_ichat_cmd (qglobal, ctoks - 4, pzsplit + 4,
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&qset->uuconf_schat, pblock);
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iret &=~ UUCONF_CMDTABRET_KEEP;
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if (iret != UUCONF_SUCCESS)
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break;
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}
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(void) fclose (e);
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if (pzcomma != NULL)
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free ((pointer) pzcomma);
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if (iret != UUCONF_SUCCESS)
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{
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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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qglobal->zfilename = qglobal->qprocess->zv2systems;
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return iret | UUCONF_ERROR_FILENAME | UUCONF_ERROR_LINENO;
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}
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if (pblock == NULL)
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{
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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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return UUCONF_NOT_FOUND;
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}
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/* Now read USERFILE and L.cmds to get permissions. We can't fully
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handle USERFILE since that specifies permissions based on local
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users which we do not support. */
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{
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e = fopen (qglobal->qprocess->zv2userfile, "r");
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if (e != NULL)
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{
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char **pzlocal, **pzremote;
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boolean fdefault_callback;
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char *zdefault_login;
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struct uuconf_system *q;
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pzlocal = NULL;
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pzremote = NULL;
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fdefault_callback = FALSE;
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zdefault_login = NULL;
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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 *zcomma;
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boolean fcallback;
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char **pzlist, **pznew;
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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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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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if (ctoks == 0)
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continue;
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/* The first field is username,machinename */
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zcomma = strchr (pzsplit[0], ',');
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if (zcomma == NULL)
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continue;
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*zcomma++ = '\0';
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/* The rest of the line is the list of directories, except
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that if the first directory is "c" we must call the
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system back. */
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fcallback = FALSE;
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pzlist = pzsplit + 1;
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--ctoks;
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if (ctoks > 0
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&& pzsplit[1][0] == 'c'
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&& pzsplit[1][1] == '\0')
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{
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fcallback = TRUE;
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pzlist = pzsplit + 2;
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--ctoks;
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}
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/* Now pzsplit[0] is the user name, zcomma is the system
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name, fcallback indicates whether a call back is
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required, ctoks is the number of directories and pzlist
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points to the directories. If the system name matches,
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then the user name is the name that the system must use
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to log in, and the list of directories is what may be
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transferred in by either local or remote request.
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Otherwise, if no system name matches, then the first
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line with no user name gives the list of directories
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that may be transferred by local request, and the first
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line with no system name gives the list of directories
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that may be transferred by remote request. */
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if ((pzsplit[0][0] != '\0' || pzlocal != NULL)
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&& (zcomma[0] != '\0' || pzremote != NULL)
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&& strcmp (zcomma, zsystem) != 0)
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continue;
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/* NULL terminate the list of directories. */
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pznew = (char **) uuconf_malloc (pblock,
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(ctoks + 1) * sizeof (char *));
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if (pznew == 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) pznew, (pointer) pzlist,
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ctoks * sizeof (char *));
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pznew[ctoks] = NULL;
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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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if (pzsplit[0][0] == '\0')
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{
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pzlocal = pznew;
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fdefault_callback = fcallback;
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}
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else if (zcomma[0] == '\0')
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{
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pzremote = pznew;
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zdefault_login = pzsplit[0];
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}
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else
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{
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/* Both the login name and the machine name were
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listed; require the machine to be logged in under
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this name. This is not fully backward compatible,
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and perhaps should be changed. On the other hand,
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it is more useful. */
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for (q = qsys; q != NULL; q = q->uuconf_qalternate)
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{
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q->uuconf_zcalled_login = pzsplit[0];
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q->uuconf_fcallback = fcallback;
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q->uuconf_pzlocal_send = pznew;
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q->uuconf_pzlocal_receive = pznew;
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q->uuconf_pzremote_send = pznew;
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q->uuconf_pzremote_receive = pznew;
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}
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break;
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}
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}
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(void) fclose (e);
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if (iret != UUCONF_SUCCESS)
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{
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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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qglobal->zfilename = qglobal->qprocess->zv2userfile;
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return iret | UUCONF_ERROR_FILENAME | UUCONF_ERROR_LINENO;
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}
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if (qsys->uuconf_pzlocal_send == (char **) &_uuconf_unset
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&& pzlocal != NULL)
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{
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for (q = qsys; q != NULL; q = q->uuconf_qalternate)
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{
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q->uuconf_fcallback = fdefault_callback;
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q->uuconf_pzlocal_send = pzlocal;
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q->uuconf_pzlocal_receive = pzlocal;
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}
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}
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if (qsys->uuconf_pzremote_send == (char **) &_uuconf_unset
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&& pzremote != NULL)
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{
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for (q = qsys; q != NULL; q = q->uuconf_qalternate)
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{
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q->uuconf_zcalled_login = zdefault_login;
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q->uuconf_pzremote_send = pzremote;
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q->uuconf_pzremote_receive = pzremote;
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}
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}
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}
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}
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/* Now we must read L.cmds to determine which commands may be
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executed. */
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{
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e = fopen (qglobal->qprocess->zv2cmds, "r");
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if (e != NULL)
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{
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qglobal->ilineno = 0;
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if (getline (&zline, &cline, e) > 0)
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{
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++qglobal->ilineno;
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zline[strcspn (zline, "#\n")] = '\0';
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if (strncmp (zline, "PATH=", sizeof "PATH=" - 1) == 0)
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{
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int ctoks;
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char **pznew;
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zline += sizeof "PATH=" - 1;
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ctoks = _uuconf_istrsplit (zline, ':', &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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}
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pznew = NULL;
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if (iret == UUCONF_SUCCESS)
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{
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pznew = ((char **)
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uuconf_malloc (pblock,
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(ctoks + 1) * sizeof (char *)));
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if (pznew == NULL)
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iret = UUCONF_MALLOC_FAILED | UUCONF_ERROR_ERRNO;
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}
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if (iret == UUCONF_SUCCESS)
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{
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memcpy ((pointer) pznew, (pointer) pzsplit,
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ctoks * sizeof (char *));
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pznew[ctoks] = NULL;
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qsys->uuconf_pzpath = pznew;
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zline = NULL;
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cline = 0;
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}
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|
||
if (getline (&zline, &cline, e) < 0)
|
||
{
|
||
if (zline != NULL)
|
||
{
|
||
free ((pointer) zline);
|
||
zline = NULL;
|
||
}
|
||
}
|
||
else
|
||
++qglobal->ilineno;
|
||
}
|
||
}
|
||
|
||
if (iret == UUCONF_SUCCESS && zline != NULL)
|
||
{
|
||
while (TRUE)
|
||
{
|
||
zline[strcspn (zline, "#\n")] = '\0';
|
||
iret = _uuconf_iadd_string (qglobal, zline, TRUE, FALSE,
|
||
&qsys->uuconf_pzcmds,
|
||
pblock);
|
||
if (iret != UUCONF_SUCCESS)
|
||
break;
|
||
if (getline (&zline, &cline, e) < 0)
|
||
break;
|
||
++qglobal->ilineno;
|
||
}
|
||
}
|
||
|
||
(void) fclose (e);
|
||
|
||
if (iret != UUCONF_SUCCESS)
|
||
{
|
||
qglobal->zfilename = qglobal->qprocess->zv2cmds;
|
||
iret |= UUCONF_ERROR_FILENAME | UUCONF_ERROR_LINENO;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (zline != NULL)
|
||
free ((pointer) zline);
|
||
if (pzsplit != NULL)
|
||
free ((pointer) pzsplit);
|
||
|
||
return iret;
|
||
}
|