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- stevesk@cvs.openbsd.org 2002/02/28 20:56:00 

[auth.c]
     log user not allowed details, from dwd@bell-labs.com; ok markus@
This commit is contained in:
Ben Lindstrom 2002-03-05 01:40:37 +00:00
parent ea03db9dbb
commit 6ef9ec6b6b
2 changed files with 29 additions and 7 deletions
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5
ChangeLog
View File

@ -30,6 +30,9 @@
- stevesk@cvs.openbsd.org 2002/02/28 20:46:10
[sshd.8]
-u0 DNS for user@host
- stevesk@cvs.openbsd.org 2002/02/28 20:56:00
[auth.c]
log user not allowed details, from dwd@bell-labs.com; ok markus@
20020226
- (tim) Bug 12 [configure.ac] add sys/bitypes.h to int64_t tests
@ -7761,4 +7764,4 @@
- Wrote replacements for strlcpy and mkdtemp
- Released 1.0pre1
$Id: ChangeLog,v 1.1899 2002/03/05 01:38:57 mouring Exp $
$Id: ChangeLog,v 1.1900 2002/03/05 01:40:37 mouring Exp $

31
auth.c
View File

@ -23,7 +23,7 @@
*/
#include "includes.h"
RCSID("$OpenBSD: auth.c,v 1.33 2002/02/28 19:36:28 stevesk Exp $");
RCSID("$OpenBSD: auth.c,v 1.34 2002/02/28 20:56:00 stevesk Exp $");
#ifdef HAVE_LOGIN_H
#include <login.h>
@ -104,17 +104,26 @@ allowed_user(struct passwd * pw)
shell = (pw->pw_shell[0] == '\0') ? _PATH_BSHELL : pw->pw_shell;
/* deny if shell does not exists or is not executable */
if (stat(shell, &st) != 0)
if (stat(shell, &st) != 0) {
log("User %.100s not allowed because shell %.100s does not exist",
pw->pw_name, shell);
return 0;
if (!((st.st_mode & S_IFREG) && (st.st_mode & (S_IXOTH|S_IXUSR|S_IXGRP))))
}
if (!((st.st_mode & S_IFREG) && (st.st_mode & (S_IXOTH|S_IXUSR|S_IXGRP)))) {
log("User %.100s not allowed because shell %.100s is not executable",
pw->pw_name, shell);
return 0;
}
/* Return false if user is listed in DenyUsers */
if (options.num_deny_users > 0) {
for (i = 0; i < options.num_deny_users; i++)
if (match_user(pw->pw_name, options.verify_reverse_mapping,
options.deny_users[i]))
options.deny_users[i])) {
log("User %.100s not allowed because listed in DenyUsers",
pw->pw_name);
return 0;
}
}
/* Return false if AllowUsers isn't empty and user isn't listed there */
if (options.num_allow_users > 0) {
@ -123,19 +132,27 @@ allowed_user(struct passwd * pw)
options.allow_users[i]))
break;
/* i < options.num_allow_users iff we break for loop */
if (i >= options.num_allow_users)
if (i >= options.num_allow_users) {
log("User %.100s not allowed because not listed in AllowUsers",
pw->pw_name);
return 0;
}
}
if (options.num_deny_groups > 0 || options.num_allow_groups > 0) {
/* Get the user's group access list (primary and supplementary) */
if (ga_init(pw->pw_name, pw->pw_gid) == 0)
if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
log("User %.100s not allowed because not in any group",
pw->pw_name);
return 0;
}
/* Return false if one of user's groups is listed in DenyGroups */
if (options.num_deny_groups > 0)
if (ga_match(options.deny_groups,
options.num_deny_groups)) {
ga_free();
log("User %.100s not allowed because a group is listed in DenyGroups",
pw->pw_name);
return 0;
}
/*
@ -146,6 +163,8 @@ allowed_user(struct passwd * pw)
if (!ga_match(options.allow_groups,
options.num_allow_groups)) {
ga_free();
log("User %.100s not allowed because none of user's groups are listed in AllowGroups",
pw->pw_name);
return 0;
}
ga_free();