Make IPA SELinux provider aware of subdomain users

Fixes https://fedorahosted.org/sssd/ticket/1892

3 files changed, 41 insertions, 2 deletions

diff --git a/src/providers/ipa/ipa_selinux.c b/src/providers/ipa/ipa_selinux.c
index ed44fac2..d82485e7 100644
--- a/src/providers/ipa/ipa_selinux.c
+++ b/src/providers/ipa/ipa_selinux.c
@@ -36,6 +36,7 @@
 #include "providers/ipa/ipa_access.h"
 #include "providers/ipa/ipa_selinux_common.h"
 #include "providers/ipa/ipa_selinux_maps.h"
+#include "providers/ipa/ipa_subdomains.h"
 
 #ifdef HAVE_SELINUX_LOGIN_DIR
 
@@ -94,6 +95,8 @@ void ipa_selinux_handler(struct be_req *be_req)
     struct tevent_req *req;
     struct pam_data *pd;
     const char *hostname;
+    struct sss_domain_info *user_domain;
+    struct be_ctx *subdom_be_ctx;
 
     pd = talloc_get_type(be_req_get_data(be_req), struct pam_data);
 
@@ -107,8 +110,28 @@ void ipa_selinux_handler(struct be_req *be_req)
         goto fail;
     }
 
-    op_ctx = ipa_selinux_create_op_ctx(be_req, be_ctx->domain->sysdb,
-                                       be_ctx->domain,
+    if (strcasecmp(pd->domain, be_ctx->domain->name) != 0) {
+        subdom_be_ctx = ipa_get_subdomains_be_ctx(be_ctx);
+        if (subdom_be_ctx == NULL) {
+            DEBUG(SSSDBG_CONF_SETTINGS, ("Subdomains are not configured, " \
+                                         "cannot lookup domain [%s].\n",
+                                         pd->domain));
+            goto fail;
+        } else {
+            user_domain = find_subdomain_by_name(subdom_be_ctx->domain,
+                                                 pd->domain, true);
+            if (user_domain == NULL) {
+                DEBUG(SSSDBG_MINOR_FAILURE, ("No domain entry found " \
+                                             "for [%s].\n", pd->domain));
+                goto fail;
+            }
+        }
+    } else {
+        user_domain = be_ctx->domain;
+    }
+
+    op_ctx = ipa_selinux_create_op_ctx(be_req, user_domain->sysdb,
+                                       user_domain,
                                        be_req, pd->user, hostname,
                                        selinux_ctx);
     if (op_ctx == NULL) {
diff --git a/src/providers/ipa/ipa_subdomains.c b/src/providers/ipa/ipa_subdomains.c
index 529618bc..98fc69f1 100644
--- a/src/providers/ipa/ipa_subdomains.c
+++ b/src/providers/ipa/ipa_subdomains.c
@@ -79,6 +79,20 @@ struct ipa_subdomains_ctx {
     time_t disabled_until;
 };
 
+struct be_ctx *ipa_get_subdomains_be_ctx(struct be_ctx *be_ctx)
+{
+    struct ipa_subdomains_ctx *subdom_ctx;
+
+    subdom_ctx = talloc_get_type(be_ctx->bet_info[BET_SUBDOMAINS].pvt_bet_data,
+                                 struct ipa_subdomains_ctx);
+    if (subdom_ctx == NULL) {
+        DEBUG(SSSDBG_TRACE_ALL, ("Subdomains are not configured.\n"));
+        return NULL;
+    }
+
+    return subdom_ctx->be_ctx;
+}
+
 const char *get_flat_name_from_subdomain_name(struct be_ctx *be_ctx,
                                               const char *name)
 {
diff --git a/src/providers/ipa/ipa_subdomains.h b/src/providers/ipa/ipa_subdomains.h
index 35b42b41..df7f994d 100644
--- a/src/providers/ipa/ipa_subdomains.h
+++ b/src/providers/ipa/ipa_subdomains.h
@@ -28,6 +28,8 @@
 #include "providers/dp_backend.h"
 #include "providers/ipa/ipa_common.h"
 
+struct be_ctx *ipa_get_subdomains_be_ctx(struct be_ctx *be_ctx);
+
 const char *get_flat_name_from_subdomain_name(struct be_ctx *be_ctx,
                                               const char *name);