Add support for generic IPA config retrieval

3 files changed, 210 insertions, 0 deletions

diff --git a/Makefile.am b/Makefile.am
index 29df594f4..b3d8e90b9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -357,6 +357,7 @@ dist_noinst_HEADERS = \
     src/providers/ldap/sdap_autofs.h \
     src/providers/ldap/sdap_id_op.h \
     src/providers/ipa/ipa_common.h \
+    src/providers/ipa/ipa_config.h \
     src/providers/ipa/ipa_access.h \
     src/providers/ipa/ipa_auth.h \
     src/providers/ipa/ipa_dyndns.h \
@@ -1058,6 +1059,7 @@ libsss_krb5_la_LDFLAGS = \
 libsss_ipa_la_SOURCES = \
     src/providers/ipa/ipa_init.c \
     src/providers/ipa/ipa_common.c \
+    src/providers/ipa/ipa_config.c \
     src/providers/ipa/ipa_utils.c \
     src/providers/ipa/ipa_id.c \
     src/providers/ipa/ipa_netgroups.c \
diff --git a/src/providers/ipa/ipa_config.c b/src/providers/ipa/ipa_config.c
new file mode 100644
index 000000000..62a9a485d
--- /dev/null
+++ b/src/providers/ipa/ipa_config.c
@@ -0,0 +1,157 @@
+/*
+    SSSD
+
+    IPA Backend Module -- configuration retrieval
+
+    Authors:
+        Jan Zeleny <jzeleny@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 "providers/ipa/ipa_config.h"
+#include "providers/ipa/ipa_common.h"
+#include "providers/ldap/sdap_async.h"
+
+struct ipa_get_config_state {
+    char *base;
+    const char **attrs;
+
+    struct sysdb_attrs *config;
+};
+
+static void ipa_get_config_done(struct tevent_req *subreq);
+
+struct tevent_req *
+ipa_get_config_send(TALLOC_CTX *mem_ctx,
+                    struct tevent_context *ev,
+                    struct sdap_handle *sh,
+                    struct sdap_options *opts,
+                    const char *domain,
+                    const char **attrs)
+{
+    struct tevent_req *req;
+    struct tevent_req *subreq;
+    struct ipa_get_config_state *state;
+    errno_t ret;
+    char *ldap_basedn;
+
+    req = tevent_req_create(mem_ctx, &state, struct ipa_get_config_state);
+    if (req == NULL) {
+        return NULL;
+    }
+
+    if (attrs == NULL) {
+        state->attrs = talloc_zero_array(state, const char *, 4);
+        if (state->attrs == NULL) {
+            ret = ENOMEM;
+            goto done;
+        }
+        state->attrs[0] = IPA_CONFIG_MIGRATION_ENABLED;
+        state->attrs[1] = IPA_CONFIG_SELINUX_DEFAULT_MAP;
+        state->attrs[2] = IPA_CONFIG_SELINUX_MAP_ORDER;
+        state->attrs[3] = NULL;
+        attrs = state->attrs;
+    } else {
+        state->attrs = attrs;
+    }
+
+    ret = domain_to_basedn(state, domain, &ldap_basedn);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_OP_FAILURE, ("domain_to_basedn failed.\n"));
+        goto done;
+    }
+
+    state->base = talloc_asprintf(state, IPA_CONFIG_SEARCH_BASE_TEMPLATE,
+                                  ldap_basedn);
+    if (state->base == NULL) {
+        DEBUG(SSSDBG_OP_FAILURE, ("talloc_asprintf failed.\n"));
+        ret = ENOMEM;
+        goto done;
+    }
+
+    subreq = sdap_get_generic_send(state, ev, opts,
+                                   sh, state->base,
+                                   LDAP_SCOPE_SUBTREE, IPA_CONFIG_FILTER,
+                                   state->attrs, NULL, 0,
+                                   dp_opt_get_int(opts->basic,
+                                                  SDAP_ENUM_SEARCH_TIMEOUT));
+    if (subreq == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    tevent_req_set_callback(subreq, ipa_get_config_done, req);
+
+    ret = EOK;
+
+done:
+    if (ret != EOK) {
+        tevent_req_error(req, ret);
+        tevent_req_post(req, ev);
+    }
+
+    return req;
+}
+
+static void ipa_get_config_done(struct tevent_req *subreq)
+{
+    struct tevent_req *req = tevent_req_callback_data(subreq,
+                                                      struct tevent_req);
+    struct ipa_get_config_state *state = tevent_req_data(req,
+                                            struct ipa_get_config_state);
+    size_t reply_count;
+    struct sysdb_attrs **reply = NULL;
+    errno_t ret;
+
+    ret = sdap_get_generic_recv(subreq, state, &reply_count, &reply);
+    talloc_zfree(subreq);
+    if (ret) {
+        goto done;
+    }
+
+    if (reply_count != 1) {
+        DEBUG(SSSDBG_OP_FAILURE, ("Unexpected number of results, expected 1, "
+                                  "got %d.\n", reply_count));
+        ret = EINVAL;
+        goto done;
+    }
+
+    state->config = reply[0];
+
+    ret = EOK;
+
+done:
+    if (ret != EOK) {
+        tevent_req_error(req, ret);
+    } else {
+        tevent_req_done(req);
+    }
+}
+
+errno_t ipa_get_config_recv(struct tevent_req *req,
+                            TALLOC_CTX *mem_ctx,
+                            struct sysdb_attrs **config)
+{
+    struct ipa_get_config_state *state = tevent_req_data(req,
+                                              struct ipa_get_config_state);
+
+    TEVENT_REQ_RETURN_ON_ERROR(req);
+
+    *config = talloc_steal(mem_ctx, state->config);
+
+    return EOK;
+}
diff --git a/src/providers/ipa/ipa_config.h b/src/providers/ipa/ipa_config.h
new file mode 100644
index 000000000..9a25984b6
--- /dev/null
+++ b/src/providers/ipa/ipa_config.h
@@ -0,0 +1,51 @@
+/*
+    SSSD
+
+    IPA Backend Module -- configuration retrieval header
+
+    Authors:
+        Jan Zeleny <jzeleny@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 IPA_CONFIG_H_
+#define IPA_CONFIG_H_
+
+#include <talloc.h>
+#include <tevent.h>
+
+#include "providers/ldap/ldap_common.h"
+#include "db/sysdb.h"
+
+#define IPA_CONFIG_SELINUX_DEFAULT_MAP "ipaSELinuxUserMapDefault"
+#define IPA_CONFIG_SELINUX_MAP_ORDER "ipaSELinuxUserMapOrder"
+#define IPA_CONFIG_MIGRATION_ENABLED "ipaMigrationEnabled"
+#define IPA_CONFIG_SEARCH_BASE_TEMPLATE "cn=etc,%s"
+#define IPA_CONFIG_FILTER "(&(cn=ipaConfig)(objectClass=ipaGuiConfig))"
+
+struct tevent_req * ipa_get_config_send(TALLOC_CTX *mem_ctx,
+                                        struct tevent_context *ev,
+                                        struct sdap_handle *sh,
+                                        struct sdap_options *opts,
+                                        const char *domain,
+                                        const char **attrs);
+
+errno_t ipa_get_config_recv(struct tevent_req *req,
+                            TALLOC_CTX *mem_ctx,
+                            struct sysdb_attrs **config);
+
+#endif /* IPA_CONFIG_H_ */