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- markus@cvs.openbsd.org 2001/06/24 05:25:10
[auth-options.c match.c match.h]
move ip+hostname check to match.c
This commit is contained in:
Ben Lindstrom
parent
0520945179
commit
f0c50293dd
@ -92,6 +92,9 @@
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[sshconnect1.c]
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consistent with ssh2: skip key if empty passphrase is entered,
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retry num_of_passwd_prompt times if passphrase is wrong. ok fgsch@
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- markus@cvs.openbsd.org 2001/06/24 05:25:10
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[auth-options.c match.c match.h]
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move ip+hostname check to match.c
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20010622
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- (stevesk) handle systems without pw_expire and pw_change.
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@ -5776,4 +5779,4 @@
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- Wrote replacements for strlcpy and mkdtemp
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- Released 1.0pre1
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$Id: ChangeLog,v 1.1319 2001/06/25 05:16:02 mouring Exp $
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$Id: ChangeLog,v 1.1320 2001/06/25 05:17:53 mouring Exp $
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@ -10,7 +10,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: auth-options.c,v 1.18 2001/05/31 10:30:12 markus Exp $");
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RCSID("$OpenBSD: auth-options.c,v 1.19 2001/06/24 05:25:09 markus Exp $");
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#include "packet.h"
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#include "xmalloc.h"
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@ -167,7 +167,6 @@ auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
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}
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cp = "from=\"";
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if (strncasecmp(opts, cp, strlen(cp)) == 0) {
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int mname, mip;
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const char *remote_ip = get_remote_ipaddr();
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const char *remote_host = get_canonical_hostname(
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options.reverse_mapping_check);
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@ -195,18 +194,9 @@ auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
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}
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patterns[i] = 0;
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opts++;
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/*
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* Deny access if we get a negative
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* match for the hostname or the ip
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* or if we get not match at all
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*/
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mname = match_hostname(remote_host, patterns,
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strlen(patterns));
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mip = match_hostname(remote_ip, patterns,
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strlen(patterns));
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xfree(patterns);
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if (mname == -1 || mip == -1 ||
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(mname != 1 && mip != 1)) {
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if (match_host_and_ip(remote_host, remote_ip,
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patterns) != 1) {
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xfree(patterns);
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log("Authentication tried for %.100s with "
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"correct key but not from a permitted "
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"host (host=%.200s, ip=%.200s).",
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@ -217,6 +207,7 @@ auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
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/* deny access */
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return 0;
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}
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xfree(patterns);
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/* Host name matches. */
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goto next_option;
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}
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27
match.c
27
match.c
@ -35,7 +35,7 @@
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*/
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#include "includes.h"
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RCSID("$OpenBSD: match.c,v 1.12 2001/03/10 17:51:04 markus Exp $");
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RCSID("$OpenBSD: match.c,v 1.13 2001/06/24 05:25:10 markus Exp $");
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#include "match.h"
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#include "xmalloc.h"
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@ -162,7 +162,32 @@ match_hostname(const char *host, const char *pattern, u_int len)
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return got_positive;
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}
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/*
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* returns 0 if we get a negative match for the hostname or the ip
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* or if we get no match at all. returns 1 otherwise.
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*/
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int
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match_host_and_ip(const char *host, const char *ipaddr,
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const char *patterns)
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{
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int mhost, mip;
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/* negative ipaddr match */
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if ((mip = match_hostname(ipaddr, patterns, strlen(patterns))) == -1)
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return 0;
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/* negative hostname match */
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if ((mhost = match_hostname(host, patterns, strlen(patterns))) == -1)
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return 0;
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/* no match at all */
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if (mhost == 0 && mip == 0)
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return 0;
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return 1;
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}
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/*
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* Returns first item from client-list that is also supported by server-list,
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* caller must xfree() returned string.
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*/
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#define MAX_PROP 20
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#define SEP ","
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char *
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26
match.h
26
match.h
@ -1,11 +1,9 @@
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/* $OpenBSD: match.h,v 1.7 2001/03/10 17:51:04 markus Exp $ */
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/* $OpenBSD: match.h,v 1.8 2001/06/24 05:25:10 markus Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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* This file contains various auxiliary functions related to multiple
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* precision integers.
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*
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* As far as I am concerned, the code I have written for this software
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* can be used freely for any purpose. Any derived versions of this
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@ -16,24 +14,10 @@
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#ifndef MATCH_H
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#define MATCH_H
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/*
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* Returns true if the given string matches the pattern (which may contain ?
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* and * as wildcards), and zero if it does not match.
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*/
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int match_pattern(const char *s, const char *pattern);
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/*
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* Tries to match the host name (which must be in all lowercase) against the
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* comma-separated sequence of subpatterns (each possibly preceded by ! to
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* indicate negation). Returns -1 if negation matches, 1 if there is
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* a positive match, 0 if there is no match at all.
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*/
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int match_hostname(const char *host, const char *pattern, u_int len);
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/*
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* Returns first item from client-list that is also supported by server-list,
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* caller must xfree() returned string.
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*/
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int match_pattern(const char *s, const char *pattern);
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int match_hostname(const char *host, const char *pattern, u_int len);
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int match_host_and_ip(const char *host, const char *ip, const char *p);
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int match_user(const char *u, const char *h, const char *i, const char *p);
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char *match_list(const char *client, const char *server, u_int *next);
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#endif
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