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authorStephen Gallagher <sgallagh@redhat.com>2012-07-02 10:34:52 -0400
committerStephen Gallagher <sgallagh@redhat.com>2012-07-06 11:44:46 -0400
commita4cce2c98eedecb5d3b47da62104634cae268434 (patch)
tree16ddb86f0d5b8dffa0090ccb9b1bfee16d3f288c
parentd92c50f6d75ae980b0d130134112a33e1584724c (diff)
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AD: Add AD access-control provider
This patch adds support for checking whether a user is expired or disabled in AD.
-rw-r--r--Makefile.am2
-rw-r--r--src/providers/ad/ad_access.c96
-rw-r--r--src/providers/ad/ad_access.h35
-rw-r--r--src/providers/ad/ad_init.c56
-rw-r--r--src/providers/ad/ad_opts.h2
5 files changed, 190 insertions, 1 deletions
diff --git a/Makefile.am b/Makefile.am
index c638f022..35930621 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1353,6 +1353,8 @@ libsss_ad_la_SOURCES = \
src/providers/ad/ad_init.c \
src/providers/ad/ad_id.c \
src/providers/ad/ad_id.h \
+ src/providers/ad/ad_access.c \
+ src/providers/ad/ad_access.h \
src/providers/ad/ad_opts.h \
src/util/find_uid.c \
src/util/user_info_msg.c \
diff --git a/src/providers/ad/ad_access.c b/src/providers/ad/ad_access.c
new file mode 100644
index 00000000..314cdcfa
--- /dev/null
+++ b/src/providers/ad/ad_access.c
@@ -0,0 +1,96 @@
+/*
+ SSSD
+
+ Authors:
+ Stephen Gallagher <sgallagh@redhat.com>
+
+ Copyright (C) 2012 Red Hat
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <security/pam_modules.h>
+#include "src/util/util.h"
+#include "src/providers/data_provider.h"
+#include "src/providers/dp_backend.h"
+#include "src/providers/ad/ad_access.h"
+#include "src/providers/ldap/sdap_access.h"
+
+static void
+ad_access_done(struct tevent_req *req);
+
+void
+ad_access_handler(struct be_req *breq)
+{
+ struct tevent_req *req;
+ struct ad_access_ctx *access_ctx =
+ talloc_get_type(breq->be_ctx->bet_info[BET_ACCESS].pvt_bet_data,
+ struct ad_access_ctx);
+
+ struct pam_data *pd = talloc_get_type(breq->req_data, struct pam_data);
+
+ /* Handle subdomains */
+ if (strcasecmp(pd->domain, breq->be_ctx->domain->name) != 0) {
+ breq->domain = new_subdomain(breq, breq->be_ctx->domain, pd->domain,
+ NULL, NULL);
+ if (breq->domain == NULL) {
+ DEBUG(SSSDBG_OP_FAILURE, ("new_subdomain failed.\n"));
+ breq->fn(breq, DP_ERR_FATAL, PAM_SYSTEM_ERR, NULL);
+ return;
+ }
+ breq->sysdb = breq->domain->sysdb;
+ }
+
+ /* Verify that the account is not locked */
+ req = sdap_access_send(breq,
+ breq->be_ctx->ev,
+ breq,
+ access_ctx->sdap_access_ctx,
+ pd);
+ if (!req) {
+ breq->fn(breq, DP_ERR_FATAL, PAM_SYSTEM_ERR, NULL);
+ return;
+ }
+ tevent_req_set_callback(req, ad_access_done, breq);
+}
+
+static void
+ad_access_done(struct tevent_req *req)
+{
+ errno_t ret;
+ int pam_status;
+ struct be_req *breq =
+ tevent_req_callback_data(req, struct be_req);
+ struct pam_data *pd = talloc_get_type(breq->req_data, struct pam_data);
+
+ ret = sdap_access_recv(req, &pam_status);
+ talloc_zfree(req);
+ if (ret != EOK) {
+ breq->fn(breq, DP_ERR_FATAL, PAM_SYSTEM_ERR, strerror(ret));
+ return;
+ }
+
+ pd->pam_status = pam_status;
+
+ if (pam_status == PAM_SUCCESS || pam_status == PAM_PERM_DENIED) {
+ /* We got the proper approval or denial */
+ breq->fn(breq, DP_ERR_OK, pam_status, NULL);
+ return;
+ }
+
+ /* Something went wrong */
+ pd->pam_status = PAM_SYSTEM_ERR;
+ breq->fn(breq, DP_ERR_FATAL, pam_status, pam_strerror(NULL, pam_status));
+ return;
+}
diff --git a/src/providers/ad/ad_access.h b/src/providers/ad/ad_access.h
new file mode 100644
index 00000000..62259265
--- /dev/null
+++ b/src/providers/ad/ad_access.h
@@ -0,0 +1,35 @@
+/*
+ SSSD
+
+ Authors:
+ Stephen Gallagher <sgallagh@redhat.com>
+
+ Copyright (C) 2012 Red Hat
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef AD_ACCESS_H_
+#define AD_ACCESS_H_
+
+struct ad_access_ctx {
+ struct sdap_id_ctx *sdap_ctx;
+ struct dp_option *ad_options;
+ struct sdap_access_ctx *sdap_access_ctx;
+};
+
+void
+ad_access_handler(struct be_req *breq);
+
+#endif /* AD_ACCESS_H_ */
diff --git a/src/providers/ad/ad_init.c b/src/providers/ad/ad_init.c
index 89101a5b..6baae0ce 100644
--- a/src/providers/ad/ad_init.c
+++ b/src/providers/ad/ad_init.c
@@ -28,7 +28,9 @@
#include "util/util.h"
#include "providers/ad/ad_common.h"
+#include "providers/ad/ad_access.h"
#include "providers/ldap/ldap_common.h"
+#include "providers/ldap/sdap_access.h"
#include "providers/ldap/sdap_idmap.h"
#include "providers/krb5/krb5_auth.h"
#include "providers/krb5/krb5_init_shared.h"
@@ -55,6 +57,11 @@ struct bet_ops ad_chpass_ops = {
.finalize = NULL
};
+struct bet_ops ad_access_ops = {
+ .handler = ad_access_handler,
+ .finalize = NULL
+};
+
static errno_t
common_ad_init(struct be_ctx *bectx)
{
@@ -261,6 +268,55 @@ sssm_ad_chpass_init(struct be_ctx *bectx,
return ret;
}
+int
+sssm_ad_access_init(struct be_ctx *bectx,
+ struct bet_ops **ops,
+ void **pvt_data)
+{
+ errno_t ret;
+ struct ad_access_ctx *access_ctx;
+ struct ad_id_ctx *ad_id_ctx;
+
+ access_ctx = talloc_zero(bectx, struct ad_access_ctx);
+ if (!access_ctx) return ENOMEM;
+
+ ret = sssm_ad_id_init(bectx, ops, (void **)&ad_id_ctx);
+ if (ret != EOK) {
+ goto fail;
+ }
+ access_ctx->sdap_ctx = ad_id_ctx->sdap_id_ctx;
+
+ ret = dp_copy_options(access_ctx, ad_options->basic, AD_OPTS_BASIC,
+ &access_ctx->ad_options);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE,
+ ("Could not initialize access provider options: [%s]\n",
+ strerror(ret)));
+ goto fail;
+ }
+
+ /* Set up an sdap_access_ctx for checking expired/locked accounts */
+ access_ctx->sdap_access_ctx =
+ talloc_zero(access_ctx, struct sdap_access_ctx);
+ if (!access_ctx->sdap_access_ctx) {
+ ret = ENOMEM;
+ goto fail;
+ }
+
+ access_ctx->sdap_access_ctx->id_ctx = access_ctx->sdap_ctx;
+ access_ctx->sdap_access_ctx->access_rule[0] = LDAP_ACCESS_EXPIRE;
+ access_ctx->sdap_access_ctx->access_rule[1] = LDAP_ACCESS_EMPTY;
+
+ *ops = &ad_access_ops;
+ *pvt_data = access_ctx;
+
+ return EOK;
+
+fail:
+ talloc_free(access_ctx);
+ return ret;
+}
+
static void
ad_shutdown(struct be_req *req)
{
diff --git a/src/providers/ad/ad_opts.h b/src/providers/ad/ad_opts.h
index 178d097f..b3df14c9 100644
--- a/src/providers/ad/ad_opts.h
+++ b/src/providers/ad/ad_opts.h
@@ -92,7 +92,7 @@ struct dp_option ad_def_ldap_opts[] = {
{ "ldap_netgroup_search_base", DP_OPT_STRING, NULL_STRING, NULL_STRING },
{ "ldap_group_nesting_level", DP_OPT_NUMBER, { .number = 2 }, NULL_NUMBER },
{ "ldap_deref", DP_OPT_STRING, NULL_STRING, NULL_STRING },
- { "ldap_account_expire_policy", DP_OPT_STRING, NULL_STRING, NULL_STRING },
+ { "ldap_account_expire_policy", DP_OPT_STRING, { "ad" }, NULL_STRING },
{ "ldap_access_order", DP_OPT_STRING, { "filter" }, NULL_STRING },
{ "ldap_chpass_uri", DP_OPT_STRING, NULL_STRING, NULL_STRING },
{ "ldap_chpass_dns_service_name", DP_OPT_STRING, NULL_STRING, NULL_STRING },