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/* util.c
A couple of UUCP utility functions.
Copyright (C) 1991, 1992, 1993, 2002 Ian Lance Taylor
This file is part of the Taylor UUCP package.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; 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.
*/
#include "uucp.h"
#if USE_RCS_ID
const char util_rcsid[] = "$Id: util.c,v 1.11 2002/03/05 19:10:42 ian Rel $";
#endif
#include <ctype.h>
#include "uudefs.h"
#include "uuconf.h"
#include "system.h"
/* Get information for an unknown system. This will leave the name
allocated on the heap. We could fix this by breaking the
abstraction and adding the name to qsys->palloc. It makes sure the
name is not too long, but takes no other useful action. */
boolean
funknown_system (puuconf, zsystem, qsys)
pointer puuconf;
const char *zsystem;
struct uuconf_system *qsys;
{
char *z;
int iuuconf;
if (strlen (zsystem) <= cSysdep_max_name_len)
z = zbufcpy (zsystem);
else
{
char **pznames, **pz;
boolean ffound;
z = zbufalc (cSysdep_max_name_len + 1);
memcpy (z, zsystem, cSysdep_max_name_len);
z[cSysdep_max_name_len] = '\0';
iuuconf = uuconf_system_names (puuconf, &pznames, TRUE);
if (iuuconf != UUCONF_SUCCESS)
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
ffound = FALSE;
for (pz = pznames; *pz != NULL; pz++)
{
if (strcmp (*pz, z) == 0)
ffound = TRUE;
xfree ((pointer) *pz);
}
xfree ((pointer) pznames);
if (ffound)
{
ubuffree (z);
return FALSE;
}
}
iuuconf = uuconf_system_unknown (puuconf, qsys);
if (iuuconf == UUCONF_NOT_FOUND)
{
ubuffree (z);
return FALSE;
}
else if (iuuconf != UUCONF_SUCCESS)
ulog_uuconf (LOG_FATAL, puuconf, iuuconf);
for (; qsys != NULL; qsys = qsys->uuconf_qalternate)
qsys->uuconf_zname = z;
return TRUE;
}
/* Remove all occurrences of the local system name followed by an
exclamation point from the front of a string, returning the new
string. This is used by uucp and uux. */
char *
zremove_local_sys (qlocalsys, z)
struct uuconf_system *qlocalsys;
char *z;
{
size_t clen;
char *zexclam;
clen = strlen (qlocalsys->uuconf_zname);
zexclam = strchr (z, '!');
while (zexclam != NULL)
{
if (z == zexclam
|| ((size_t) (zexclam - z) == clen
&& strncmp (z, qlocalsys->uuconf_zname, clen) == 0))
;
else if (qlocalsys->uuconf_pzalias == NULL)
break;
else
{
char **pzal;
for (pzal = qlocalsys->uuconf_pzalias; *pzal != NULL; pzal++)
if (strlen (*pzal) == (size_t) (zexclam - z)
&& strncmp (z, *pzal, (size_t) (zexclam - z)) == 0)
break;
if (*pzal == NULL)
break;
}
z = zexclam + 1;
zexclam = strchr (z, '!');
}
return z;
}
/* See whether a file is in a directory list, and make sure the user
has appropriate access. */
boolean
fin_directory_list (zfile, pzdirs, zpubdir, fcheck, freadable, zuser)
const char *zfile;
char **pzdirs;
const char *zpubdir;
boolean fcheck;
boolean freadable;
const char *zuser;
{
boolean fmatch;
char **pz;
fmatch = FALSE;
for (pz = pzdirs; *pz != NULL; pz++)
{
char *zuse;
if (pz[0][0] == '!')
{
zuse = zsysdep_local_file (*pz + 1, zpubdir, (boolean *) NULL);
if (zuse == NULL)
return FALSE;
if (fsysdep_in_directory (zfile, zuse, FALSE,
FALSE, (const char *) NULL))
fmatch = FALSE;
}
else
{
zuse = zsysdep_local_file (*pz, zpubdir, (boolean *) NULL);
if (zuse == NULL)
return FALSE;
if (fsysdep_in_directory (zfile, zuse, fcheck,
freadable, zuser))
fmatch = TRUE;
}
ubuffree (zuse);
}
return fmatch;
}
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