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-rw-r--r--lib/libpam/modules/modules.inc2
-rw-r--r--lib/libpam/modules/pam_group/pam_group.c118
2 files changed, 119 insertions, 1 deletions
diff --git a/lib/libpam/modules/modules.inc b/lib/libpam/modules/modules.inc
index 029cc85..355b609 100644
--- a/lib/libpam/modules/modules.inc
+++ b/lib/libpam/modules/modules.inc
@@ -6,6 +6,7 @@ MODULES += pam_echo
MODULES += pam_exec
MODULES += pam_ftp
MODULES += pam_ftpusers
+MODULES += pam_group
.if defined(MAKE_KERBEROS4) && !defined(NOCRYPT) && !defined(NO_OPENSSL)
MODULES += pam_kerberosIV
.endif
@@ -31,4 +32,3 @@ MODULES += pam_ssh
.endif
MODULES += pam_tacplus
MODULES += pam_unix
-MODULES += pam_wheel
diff --git a/lib/libpam/modules/pam_group/pam_group.c b/lib/libpam/modules/pam_group/pam_group.c
new file mode 100644
index 0000000..c1a4488
--- /dev/null
+++ b/lib/libpam/modules/pam_group/pam_group.c
@@ -0,0 +1,118 @@
+/*-
+ * Copyright (c) 2003 Networks Associates Technology, Inc.
+ * All rights reserved.
+ *
+ * Portions of this software were developed for the FreeBSD Project by
+ * ThinkSec AS and NAI Labs, the Security Research Division of Network
+ * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
+ * ("CBOSS"), as part of the DARPA CHATS research program.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+
+#include <grp.h>
+#include <pwd.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <syslog.h>
+#include <unistd.h>
+
+#define PAM_SM_AUTH
+
+#include <security/pam_appl.h>
+#include <security/pam_modules.h>
+#include <security/openpam.h>
+
+
+PAM_EXTERN int
+pam_sm_authenticate(pam_handle_t *pamh, int flags __unused,
+ int argc __unused, const char *argv[] __unused)
+{
+ const char *group, *user, *ruser;
+ char *const *list;
+ struct passwd *pwd;
+ struct group *grp;
+
+ /* get target account */
+ if (pam_get_item(pamh, PAM_USER, (const void **)&user) != PAM_SUCCESS
+ || user == NULL || (pwd = getpwnam(user)) == NULL)
+ return (PAM_AUTH_ERR);
+ if (pwd->pw_uid != 0 && openpam_get_option(pamh, "root_only"))
+ return (PAM_IGNORE);
+
+ /* get applicant */
+ if (pam_get_item(pamh, PAM_RUSER, (const void **)&ruser) != PAM_SUCCESS
+ || ruser == NULL || (pwd = getpwnam(ruser)) == NULL)
+ return (PAM_AUTH_ERR);
+
+ /* get regulating group */
+ if ((group = openpam_get_option(pamh, "group")) == NULL)
+ group = "wheel";
+ if ((grp = getgrnam(group)) == NULL || grp->gr_mem == NULL)
+ goto failed;
+
+ /* check if the group is empty */
+ if (*grp->gr_mem == NULL)
+ goto failed;
+
+ /* check membership */
+ if (pwd->pw_gid == grp->gr_gid)
+ goto found;
+ for (list = grp->gr_mem; *list != NULL; ++list)
+ if (strcmp(*list, pwd->pw_name) == 0)
+ goto found;
+
+ not_found:
+ fprintf(stderr, "couldn't find %s in %s\n", ruser, group);
+ if (openpam_get_option(pamh, "deny"))
+ return (PAM_SUCCESS);
+ return (PAM_AUTH_ERR);
+ found:
+ fprintf(stderr, "found %s in %s\n", ruser, group);
+ if (openpam_get_option(pamh, "deny"))
+ return (PAM_AUTH_ERR);
+ return (PAM_SUCCESS);
+ failed:
+ if (openpam_get_option(pamh, "fail_safe"))
+ goto found;
+ else
+ goto not_found;
+}
+
+PAM_EXTERN int
+pam_sm_setcred(pam_handle_t * pamh __unused, int flags __unused,
+ int argc __unused, const char *argv[] __unused)
+{
+
+ return (PAM_SUCCESS);
+}
+
+PAM_MODULE_ENTRY("pam_group");
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