569a3b8e59
lib/sgetpwent.c: Include "prototypes.h" to make sure the exported prototypes are the ones used for the definition of functions. * lib/prototypes.h: Added prototypes for __gr_del_entry(), __gr_get_db(), __gr_get_head(), __gr_set_changed(), __gr_dup(), __pw_del_entry(), __pw_get_db(), __pw_get_head(), __pw_dup(), sgetgrent(), sgetpwent(), __sgr_del_entry(), __sgr_dup(), __sgr_get_head(), __sgr_set_changed(), __spw_get_head(), __spw_del_entry(), __spw_dup(). * lib/prototypes.h: Removed prototype for is_listed(). * lib/prototypes.h: Added name of the check_su_auth()'s parameters. * lib/groupio.h: Removed prototypes for __gr_dup() and __gr_set_changed(). * lib/sgroupio.c: Removed prototypes for putsgent(), sgetsgent(), and __gr_get_db(). * lib/sgroupio.h: Removed prototypes for __sgr_dup() and __sgr_set_changed(). * lib/shadowio.c: Removed prototype for __pw_get_db(). * lib/pwio.c: Removed prototype for sgetpwent() and putpwent(). * lib/shadowio.h: Removed prototypes for __spw_dup() and __spw_set_changed(). * lib/pwio.h: Removed prototypes for __pw_dup() and __pw_set_changed(). * lib/commonio.h: Add protection against multiple inclusions. * lib/prototypes.h: Include commonio.h (needed for the __xx_del_entry() functions).
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/*
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* Copyright 1991, Julianne Frances Haugh and Chip Rosenthal
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <config.h>
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#include "defines.h"
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#include <stdio.h>
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#include "getdef.h"
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#include "prototypes.h"
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#ident "$Id$"
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/* local function prototypes */
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static int is_listed (const char *cfgin, const char *tty, int def);
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/*
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* This is now rather generic function which decides if "tty" is listed
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* under "cfgin" in config (directly or indirectly). Fallback to default if
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* something is bad.
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*/
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static int is_listed (const char *cfgin, const char *tty, int def)
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{
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FILE *fp;
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char buf[200], *cons, *s;
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/*
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* If the CONSOLE configuration definition isn't given,
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* fallback to default.
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*/
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if ((cons = getdef_str (cfgin)) == NULL)
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return def;
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/*
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* If this isn't a filename, then it is a ":" delimited list of
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* console devices upon which root logins are allowed.
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*/
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if (*cons != '/') {
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cons = strcpy (buf, cons);
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while ((s = strtok (cons, ":")) != NULL) {
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if (strcmp (s, tty) == 0)
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return 1;
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cons = NULL;
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}
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return 0;
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}
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/*
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* If we can't open the console list, then call everything a
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* console - otherwise root will never be allowed to login.
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*/
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if ((fp = fopen (cons, "r")) == NULL)
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return def;
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/*
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* See if this tty is listed in the console file.
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*/
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while (fgets (buf, sizeof (buf), fp) != NULL) {
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buf[strlen (buf) - 1] = '\0';
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if (strcmp (buf, tty) == 0) {
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(void) fclose (fp);
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return 1;
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}
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}
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/*
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* This tty isn't a console.
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*/
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(void) fclose (fp);
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return 0;
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}
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/*
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* console - return 1 if the "tty" is a console device, else 0.
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*
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* Note - we need to take extreme care here to avoid locking out root logins
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* if something goes awry. That's why we do things like call everything a
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* console if the consoles file can't be opened. Because of this, we must
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* warn the user to protect against the remove of the consoles file since
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* that would allow an unauthorized root login.
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*/
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int console (const char *tty)
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{
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return is_listed ("CONSOLE", tty, 1);
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}
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