1 files changed, 105 insertions, 0 deletions
diff --git a/src/responder/common/negcache_files.c b/src/responder/common/negcache_files.c
new file mode 100644
index 0000000..f22796a
--- /dev/null
+++ b/src/responder/common/negcache_files.c
@@ -0,0 +1,105 @@
+/*
+   SSSD
+
+   NSS Responder
+
+   Copyright (C) Petr Čech <pcech@redhat.com>	2016
+
+   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 "util/util.h"
+#include "util/nss_dl_load.h"
+#include "responder/common/negcache_files.h"
+
+#define BUFFER_SIZE 16384
+static char s_nss_buffer[BUFFER_SIZE];
+
+bool is_user_local_by_name(const struct sss_nss_ops *ops, const char *name)
+{
+    struct passwd pwd = { 0 };
+    int errnop;
+    enum nss_status ret;
+    char *shortname = NULL;
+    int parse_ret;
+
+    parse_ret = sss_parse_internal_fqname(NULL, name, &shortname, NULL);
+    if (parse_ret != EOK) {
+        return false;
+    }
+
+    ret = ops->getpwnam_r(shortname, &pwd, s_nss_buffer, BUFFER_SIZE, &errnop);
+    talloc_free(shortname);
+    if (ret == NSS_STATUS_SUCCESS) {
+        DEBUG(SSSDBG_TRACE_FUNC, "User %s is a local user\n", name);
+        return true;
+    }
+
+    return false;
+}
+
+bool is_user_local_by_uid(const struct sss_nss_ops *ops, uid_t uid)
+{
+    struct passwd pwd = { 0 };
+    int errnop;
+    enum nss_status ret;
+
+    ret = ops->getpwuid_r(uid, &pwd, s_nss_buffer, BUFFER_SIZE, &errnop);
+    if (ret == NSS_STATUS_SUCCESS) {
+        DEBUG(SSSDBG_TRACE_FUNC,
+              "User with UID %"SPRIuid" is a local user\n", uid);
+        return true;
+    }
+
+    return false;
+}
+
+bool is_group_local_by_name(const struct sss_nss_ops *ops, const char *name)
+{
+    struct group grp = { 0 };
+    int errnop;
+    enum nss_status ret;
+    char *shortname = NULL;
+    int parse_ret;
+
+    parse_ret = sss_parse_internal_fqname(NULL, name, &shortname, NULL);
+    if (parse_ret != EOK) {
+        return false;
+    }
+
+    ret = ops->getgrnam_r(shortname, &grp, s_nss_buffer, BUFFER_SIZE, &errnop);
+    talloc_free(shortname);
+    if (ret == NSS_STATUS_SUCCESS) {
+        DEBUG(SSSDBG_TRACE_FUNC, "Group %s is a local group\n", name);
+        return true;
+    }
+
+    return false;
+}
+
+bool is_group_local_by_gid(const struct sss_nss_ops *ops, uid_t gid)
+{
+    struct group grp = { 0 };
+    int errnop;
+    enum nss_status ret;
+
+    ret = ops->getgrgid_r(gid, &grp, s_nss_buffer, BUFFER_SIZE, &errnop);
+    if (ret == NSS_STATUS_SUCCESS) {
+        DEBUG(SSSDBG_TRACE_FUNC,
+              "Group with GID %"SPRIgid" is a local group\n", gid);
+        return true;
+    }
+
+    return false;
+}