Implement netgroup support for LDAP provider

1 files changed, 224 insertions, 0 deletions

diff --git a/src/providers/ldap/ldap_id_netgroup.c b/src/providers/ldap/ldap_id_netgroup.c
new file mode 100644
index 000000000..c82ccc439
--- /dev/null
+++ b/src/providers/ldap/ldap_id_netgroup.c
@@ -0,0 +1,224 @@
+/*
+    SSSD
+
+    LDAP Identity Backend Module - Netgroup support
+
+    Authors:
+        Sumit Bose <sbose@redhat.com>
+
+    Copyright (C) 2010 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 <errno.h>
+
+#include "util/util.h"
+#include "db/sysdb.h"
+#include "providers/ldap/ldap_common.h"
+#include "providers/ldap/sdap_async.h"
+
+
+struct netgroup_get_state {
+    struct tevent_context *ev;
+    struct sdap_id_ctx *ctx;
+    struct sdap_id_op *op;
+    struct sysdb_ctx *sysdb;
+    struct sss_domain_info *domain;
+
+    const char *name;
+
+    char *filter;
+    const char **attrs;
+
+    size_t count;
+    struct sysdb_attrs **netgroups;
+
+    int dp_error;
+};
+
+static int netgroup_get_retry(struct tevent_req *req);
+static void netgroup_get_connect_done(struct tevent_req *subreq);
+static void netgroup_get_done(struct tevent_req *subreq);
+
+struct tevent_req *netgroup_get_send(TALLOC_CTX *memctx,
+                                     struct tevent_context *ev,
+                                     struct sdap_id_ctx *ctx,
+                                     const char *name)
+{
+    struct tevent_req *req;
+    struct netgroup_get_state *state;
+    int ret;
+
+    req = tevent_req_create(memctx, &state, struct netgroup_get_state);
+    if (!req) return NULL;
+
+    state->ev = ev;
+    state->ctx = ctx;
+    state->dp_error = DP_ERR_FATAL;
+
+    state->op = sdap_id_op_create(state, state->ctx->conn_cache);
+    if (!state->op) {
+        DEBUG(2, ("sdap_id_op_create failed\n"));
+        ret = ENOMEM;
+        goto fail;
+    }
+
+    state->sysdb = ctx->be->sysdb;
+    state->domain = state->ctx->be->domain;
+    state->name = name;
+
+    state->filter = talloc_asprintf(state, "(&(%s=%s)(objectclass=%s))",
+                            ctx->opts->netgroup_map[SDAP_AT_NETGROUP_NAME].name,
+                            name,
+                            ctx->opts->netgroup_map[SDAP_OC_NETGROUP].name);
+    if (!state->filter) {
+        DEBUG(2, ("Failed to build filter\n"));
+        ret = ENOMEM;
+        goto fail;
+    }
+
+    ret = build_attrs_from_map(state, ctx->opts->netgroup_map,
+                               SDAP_OPTS_NETGROUP, &state->attrs);
+    if (ret != EOK) goto fail;
+
+    ret = netgroup_get_retry(req);
+    if (ret != EOK) {
+        goto fail;
+    }
+
+    return req;
+
+fail:
+    tevent_req_error(req, ret);
+    tevent_req_post(req, ev);
+    return req;
+}
+
+static int netgroup_get_retry(struct tevent_req *req)
+{
+    struct netgroup_get_state *state = tevent_req_data(req,
+                                                    struct netgroup_get_state);
+    struct tevent_req *subreq;
+    int ret = EOK;
+
+    subreq = sdap_id_op_connect_send(state->op, state, &ret);
+    if (!subreq) {
+        return ret;
+    }
+
+    tevent_req_set_callback(subreq, netgroup_get_connect_done, req);
+    return EOK;
+}
+
+static void netgroup_get_connect_done(struct tevent_req *subreq)
+{
+    struct tevent_req *req = tevent_req_callback_data(subreq,
+                                                      struct tevent_req);
+    struct netgroup_get_state *state = tevent_req_data(req,
+                                                    struct netgroup_get_state);
+    int dp_error = DP_ERR_FATAL;
+    int ret;
+
+    ret = sdap_id_op_connect_recv(subreq, &dp_error);
+    talloc_zfree(subreq);
+
+    if (ret != EOK) {
+        state->dp_error = dp_error;
+        tevent_req_error(req, ret);
+        return;
+    }
+
+    subreq = sdap_get_netgroups_send(state, state->ev,
+                                     state->domain, state->sysdb,
+                                     state->ctx->opts,
+                                     sdap_id_op_handle(state->op),
+                                     state->attrs, state->filter);
+    if (!subreq) {
+        tevent_req_error(req, ENOMEM);
+        return;
+    }
+    tevent_req_set_callback(subreq, netgroup_get_done, req);
+
+    return;
+}
+
+static void netgroup_get_done(struct tevent_req *subreq)
+{
+    struct tevent_req *req = tevent_req_callback_data(subreq,
+                                                      struct tevent_req);
+    struct netgroup_get_state *state = tevent_req_data(req,
+                                                    struct netgroup_get_state);
+    int dp_error = DP_ERR_FATAL;
+    int ret;
+
+    ret = sdap_get_netgroups_recv(subreq, state, NULL, &state->count,
+                                  &state->netgroups);
+    talloc_zfree(subreq);
+    ret = sdap_id_op_done(state->op, ret, &dp_error);
+
+    if (dp_error == DP_ERR_OK && ret != EOK) {
+        /* retry */
+        ret = netgroup_get_retry(req);
+        if (ret != EOK) {
+            tevent_req_error(req, ret);
+            return;
+        }
+
+        return;
+    }
+
+    if (ret && ret != ENOENT) {
+        state->dp_error = dp_error;
+        tevent_req_error(req, ret);
+        return;
+    }
+
+    if (ret == EOK && state->count > 1) {
+        DEBUG(1, ("Found more than one netgroup with the name [%s].\n",
+                  state->name));
+        tevent_req_error(req, EINVAL);
+        return;
+    }
+
+    if (ret == ENOENT) {
+        ret = sysdb_delete_netgroup(state->sysdb, state->domain, state->name);
+        if (ret) {
+            tevent_req_error(req, ret);
+            return;
+        }
+
+        state->dp_error = DP_ERR_OK;
+        tevent_req_error(req, ENOENT);
+        return;
+    }
+
+    state->dp_error = DP_ERR_OK;
+    tevent_req_done(req);
+    return;
+}
+
+int netgroup_get_recv(struct tevent_req *req, int *dp_error_out)
+{
+    struct netgroup_get_state *state = tevent_req_data(req,
+                                                    struct netgroup_get_state);
+
+    if (dp_error_out) {
+        *dp_error_out = state->dp_error;
+    }
+
+    TEVENT_REQ_RETURN_ON_ERROR(req);
+
+    return EOK;
+}