IPA: Add get-domains target

9 files changed, 447 insertions, 0 deletions

diff --git a/Makefile.am b/Makefile.am
index 303264c56..671496358 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -392,6 +392,7 @@ dist_noinst_HEADERS = \
     src/providers/ipa/ipa_selinux_maps.h \
     src/providers/ipa/ipa_auth.h \
     src/providers/ipa/ipa_dyndns.h \
+    src/providers/ipa/ipa_subdomains.h \
     src/providers/ipa/ipa_id.h \
     src/providers/ipa/ipa_hostid.h \
     src/providers/ipa/ipa_opts.h \
@@ -1192,6 +1193,7 @@ libsss_ipa_la_SOURCES = \
     src/providers/ipa/ipa_access.c \
     src/providers/ipa/ipa_dyndns.c \
     src/providers/ipa/ipa_hosts.c \
+    src/providers/ipa/ipa_subdomains.c \
     src/providers/ipa/ipa_hbac_hosts.c \
     src/providers/ipa/ipa_hbac_private.h \
     src/providers/ipa/ipa_hbac_rules.c \
diff --git a/src/config/etc/sssd.api.d/sssd-ipa.conf b/src/config/etc/sssd.api.d/sssd-ipa.conf
index c7c877e74..850b9dbd6 100644
--- a/src/config/etc/sssd.api.d/sssd-ipa.conf
+++ b/src/config/etc/sssd.api.d/sssd-ipa.conf
@@ -6,6 +6,7 @@ ipa_dyndns_update = bool, None, false
 ipa_dyndns_iface = str, None, false
 ipa_hbac_search_base = str, None, false
 ipa_host_search_base = str, None, false
+ipa_subdomains_search_base = str, None, false
 ldap_uri = str, None, false
 ldap_search_base = str, None, false
 ldap_schema = str, None, false
diff --git a/src/man/sssd-ipa.5.xml b/src/man/sssd-ipa.5.xml
index b5bd2816d..9b8a140ce 100644
--- a/src/man/sssd-ipa.5.xml
+++ b/src/man/sssd-ipa.5.xml
@@ -196,6 +196,25 @@
                 </varlistentry>
 
                 <varlistentry>
+                    <term>ipa_subdomains_search_base (string)</term>
+                    <listitem>
+                        <para>
+                            Optional. Use the given string as search base for
+                            trusted domains.
+                        </para>
+                        <para>
+                            See <quote>ldap_search_base</quote> for
+                            information about configuring multiple search
+                            bases.
+                        </para>
+                        <para>
+                            Default: the value of
+                            <emphasis>cn=trusts,%basedn</emphasis>
+                        </para>
+                    </listitem>
+                </varlistentry>
+
+                <varlistentry>
                     <term>krb5_validate (boolean)</term>
                     <listitem>
                         <para>
diff --git a/src/providers/ipa/ipa_common.c b/src/providers/ipa/ipa_common.c
index 5d2f7987d..225c9786c 100644
--- a/src/providers/ipa/ipa_common.c
+++ b/src/providers/ipa/ipa_common.c
@@ -143,6 +143,9 @@ static errno_t ipa_parse_search_base(TALLOC_CTX *mem_ctx,
     case IPA_SELINUX_SEARCH_BASE:
         class_name = "IPA_SELINUX";
         break;
+    case IPA_SUBDOMAINS_SEARCH_BASE:
+        class_name = "IPA_SUBDOMAINS";
+        break;
     default:
         DEBUG(SSSDBG_CONF_SETTINGS,
               ("Unknown search base type: [%d]\n", class));
@@ -487,6 +490,29 @@ int ipa_get_id_options(struct ipa_options *ipa_opts,
                                  &ipa_opts->id->service_search_bases);
     if (ret != EOK) goto done;
 
+    if (NULL == dp_opt_get_string(ipa_opts->basic,
+                                  IPA_SUBDOMAINS_SEARCH_BASE)) {
+        value = talloc_asprintf(tmpctx, "cn=trusts,%s", basedn);
+        if (value == NULL) {
+            ret = ENOMEM;
+            goto done;
+        }
+
+        ret = dp_opt_set_string(ipa_opts->basic, IPA_SUBDOMAINS_SEARCH_BASE, value);
+        if (ret != EOK) {
+            goto done;
+        }
+
+        DEBUG(SSSDBG_CONF_SETTINGS, ("Option %s set to %s\n",
+                  ipa_opts->basic[IPA_SUBDOMAINS_SEARCH_BASE].opt_name,
+                  dp_opt_get_string(ipa_opts->basic,
+                                    IPA_SUBDOMAINS_SEARCH_BASE)));
+    }
+    ret = ipa_parse_search_base(ipa_opts, ipa_opts->basic,
+                                IPA_SUBDOMAINS_SEARCH_BASE,
+                                &ipa_opts->subdomains_search_bases);
+    if (ret != EOK) goto done;
+
     ret = sdap_get_map(ipa_opts->id, cdb, conf_path,
                        ipa_attr_map,
                        SDAP_AT_GENERAL,
diff --git a/src/providers/ipa/ipa_common.h b/src/providers/ipa/ipa_common.h
index d29cf92df..9232260eb 100644
--- a/src/providers/ipa/ipa_common.h
+++ b/src/providers/ipa/ipa_common.h
@@ -41,6 +41,7 @@ enum ipa_basic_opt {
     IPA_HBAC_SEARCH_BASE,
     IPA_HOST_SEARCH_BASE,
     IPA_SELINUX_SEARCH_BASE,
+    IPA_SUBDOMAINS_SEARCH_BASE,
     IPA_KRB5_REALM,
     IPA_HBAC_REFRESH,
     IPA_HBAC_DENY_METHOD,
@@ -123,6 +124,7 @@ struct ipa_options {
     struct sdap_search_base **host_search_bases;
     struct sdap_search_base **hbac_search_bases;
     struct sdap_search_base **selinux_search_bases;
+    struct sdap_search_base **subdomains_search_bases;
     struct ipa_service *service;
 
     /* id provider */
diff --git a/src/providers/ipa/ipa_init.c b/src/providers/ipa/ipa_init.c
index fca23f349..90acb1082 100644
--- a/src/providers/ipa/ipa_init.c
+++ b/src/providers/ipa/ipa_init.c
@@ -37,6 +37,7 @@
 #include "providers/ipa/ipa_dyndns.h"
 #include "providers/ipa/ipa_session.h"
 #include "providers/ldap/sdap_access.h"
+#include "providers/ipa/ipa_subdomains.h"
 
 struct ipa_options *ipa_options = NULL;
 
@@ -74,6 +75,11 @@ struct bet_ops ipa_hostid_ops = {
 };
 #endif
 
+struct bet_ops ipa_subdomains_ops = {
+    .handler = ipa_subdomains_handler,
+    .finalize = NULL
+};
+
 int common_ipa_init(struct be_ctx *bectx)
 {
     const char *ipa_servers;
@@ -513,3 +519,35 @@ int sssm_ipa_autofs_init(struct be_ctx *bectx,
     return EOK;
 #endif
 }
+
+int sssm_ipa_subdomains_init(struct be_ctx *bectx,
+                             struct bet_ops **ops,
+                         void **pvt_data)
+{
+    int ret;
+    struct ipa_subdomains_ctx *subdomains_ctx;
+    struct ipa_id_ctx *id_ctx;
+
+    subdomains_ctx = talloc_zero(bectx, struct ipa_subdomains_ctx);
+    if (subdomains_ctx == NULL) {
+        DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_zero failed.\n"));
+        return ENOMEM;
+    }
+
+    ret = sssm_ipa_id_init(bectx, ops, (void **) &id_ctx);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_CRIT_FAILURE, ("sssm_ipa_id_init failed.\n"));
+        goto done;
+    }
+    subdomains_ctx->sdap_id_ctx = id_ctx->sdap_id_ctx;
+    subdomains_ctx->search_bases = id_ctx->ipa_options->subdomains_search_bases;
+
+    *ops = &ipa_subdomains_ops;
+    *pvt_data = subdomains_ctx;
+
+done:
+    if (ret != EOK) {
+        talloc_free(subdomains_ctx);
+    }
+    return ret;
+}
diff --git a/src/providers/ipa/ipa_opts.h b/src/providers/ipa/ipa_opts.h
index 2cdb8dbb1..20f57fca5 100644
--- a/src/providers/ipa/ipa_opts.h
+++ b/src/providers/ipa/ipa_opts.h
@@ -38,6 +38,7 @@ struct dp_option ipa_basic_opts[] = {
     { "ipa_hbac_search_base", DP_OPT_STRING, NULL_STRING, NULL_STRING},
     { "ipa_host_search_base", DP_OPT_STRING, NULL_STRING, NULL_STRING },
     { "ipa_selinux_search_base", DP_OPT_STRING, NULL_STRING, NULL_STRING },
+    { "ipa_subdomains_search_base", DP_OPT_STRING, NULL_STRING, NULL_STRING },
     { "krb5_realm", DP_OPT_STRING, NULL_STRING, NULL_STRING},
     { "ipa_hbac_refresh", DP_OPT_NUMBER, { .number = 5 }, NULL_NUMBER },
     { "ipa_hbac_treat_deny_as", DP_OPT_STRING, { "DENY_ALL" }, NULL_STRING },
diff --git a/src/providers/ipa/ipa_subdomains.c b/src/providers/ipa/ipa_subdomains.c
new file mode 100644
index 000000000..da9785f2c
--- /dev/null
+++ b/src/providers/ipa/ipa_subdomains.c
@@ -0,0 +1,319 @@
+/*
+    SSSD
+
+    IPA Subdomains Module
+
+    Authors:
+        Sumit Bose <sbose@redhat.com>
+
+    Copyright (C) 2011 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/ldap/sdap_async.h"
+#include "providers/ipa/ipa_subdomains.h"
+#include "providers/ipa/ipa_common.h"
+
+#define SUBDOMAINS_FILTER "objectclass=ipaNTTrustedDomain"
+#define IPA_CN "cn"
+#define IPA_FLATNAME "ipaNTFlatName"
+#define IPA_SID "ipaNTTrustedDomainSID"
+
+static void ipa_subdomains_reply(struct be_req *be_req, int dp_err, int result)
+{
+    be_req->fn(be_req, dp_err, result, NULL);
+}
+
+static errno_t ipa_subdomains_parse_results(
+                                        struct be_get_subdomains_req *sd_data,
+                                        size_t count,
+                                        struct sysdb_attrs **reply)
+{
+    struct subdomain_info **new_domain_list = NULL;
+    const char *value;
+    size_t c;
+    int ret;
+
+    new_domain_list = talloc_array(sd_data, struct subdomain_info *, count + 1);
+    if (new_domain_list == NULL) {
+        DEBUG(SSSDBG_OP_FAILURE, ("talloc_array failed.\n"));
+        return ENOMEM;
+    }
+
+    for (c = 0; c < count; c++) {
+        new_domain_list[c] = talloc_zero(new_domain_list,
+                                         struct subdomain_info);
+        if (new_domain_list[c] == NULL) {
+            DEBUG(SSSDBG_OP_FAILURE, ("talloc_zero failed.\n"));
+            ret = ENOMEM;
+            goto done;
+        }
+
+        ret = sysdb_attrs_get_string(reply[c], IPA_CN, &value);
+        if (ret != EOK) {
+            DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
+            goto done;
+        }
+        new_domain_list[c]->name = talloc_strdup(new_domain_list[c], value);
+        if (new_domain_list[c]->name == NULL) {
+            DEBUG(SSSDBG_OP_FAILURE, ("talloc_strdup failed.\n"));
+            ret = ENOMEM;
+            goto done;
+        }
+
+        ret = sysdb_attrs_get_string(reply[c], IPA_FLATNAME, &value);
+        if (ret == EOK) {
+            new_domain_list[c]->flat_name = talloc_strdup(new_domain_list[c],
+                                                          value);
+            if (new_domain_list[c]->flat_name == NULL) {
+                DEBUG(SSSDBG_OP_FAILURE, ("talloc_strdup failed.\n"));
+                ret = ENOMEM;
+                goto done;
+            }
+        } else if (ret != ENOENT) {
+            DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
+            goto done;
+        }
+
+        ret = sysdb_attrs_get_string(reply[c], IPA_SID, &value);
+        if (ret == EOK) {
+            new_domain_list[c]->id = talloc_strdup(new_domain_list[c], value);
+            if (new_domain_list[c]->id == NULL) {
+                DEBUG(SSSDBG_OP_FAILURE, ("talloc_strdup failed.\n"));
+                ret = ENOMEM;
+                goto done;
+            }
+        } else if (ret != ENOENT) {
+            DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_get_string failed.\n"));
+            goto done;
+        }
+    }
+    new_domain_list[c] = NULL;
+
+    ret = EOK;
+
+done:
+    if (ret == EOK) {
+        talloc_free(sd_data->domain_list);
+        sd_data->domain_list = new_domain_list;
+    } else {
+        talloc_free(new_domain_list);
+    }
+
+    return ret;
+}
+
+struct ipa_subdomains_req_ctx {
+    struct be_req *be_req;
+    struct ipa_subdomains_ctx *sd_ctx;
+    struct sdap_id_op *sdap_op;
+    struct be_get_subdomains_req *sd_data;
+
+    char *current_filter;
+
+    struct sdap_search_base **search_bases;
+    int search_base_iter;
+
+    size_t reply_count;
+    struct sysdb_attrs **reply;
+};
+
+static void ipa_subdomains_get_conn_done(struct tevent_req *req);
+static errno_t ipa_subdomains_handler_next(struct ipa_subdomains_req_ctx *ctx);
+static void ipa_subdomains_handler_done(struct tevent_req *req);
+
+void ipa_subdomains_handler(struct be_req *be_req)
+{
+    struct tevent_req *req;
+    struct ipa_subdomains_req_ctx *ctx = NULL;
+    int ret;
+
+    ctx = talloc(be_req, struct ipa_subdomains_req_ctx);
+    if (ctx == NULL) {
+        ret = ENOMEM;
+        goto fail;
+    }
+
+    ctx->be_req = be_req;
+    ctx->sd_ctx = talloc_get_type(
+                        be_req->be_ctx->bet_info[BET_SUBDOMAINS].pvt_bet_data,
+                        struct ipa_subdomains_ctx);
+    ctx->sd_data = talloc_get_type(be_req->req_data,
+                                     struct be_get_subdomains_req);
+
+    ctx->search_base_iter = 0;
+    ctx->search_bases = ctx->sd_ctx->search_bases;
+    ctx->current_filter = NULL;
+    ctx->reply_count = 0;
+    ctx->reply = NULL;
+
+    ctx->sdap_op = sdap_id_op_create(ctx,
+                                     ctx->sd_ctx->sdap_id_ctx->conn_cache);
+    if (ctx->sdap_op == NULL) {
+        DEBUG(SSSDBG_OP_FAILURE, ("sdap_id_op_create failed.\n"));
+        ret = ENOMEM;
+        goto fail;
+    }
+
+    req = sdap_id_op_connect_send(ctx->sdap_op, ctx, &ret);
+    if (req == NULL) {
+        DEBUG(SSSDBG_OP_FAILURE, ("sdap_id_op_connect_send failed: %d(%s).\n",
+                                  ret, strerror(ret)));
+        goto fail;
+    }
+
+    tevent_req_set_callback(req, ipa_subdomains_get_conn_done, ctx);
+
+    return;
+
+fail:
+    talloc_free(ctx);
+    ipa_subdomains_reply(be_req, DP_ERR_FATAL, ret);
+}
+
+static void ipa_subdomains_get_conn_done(struct tevent_req *req)
+{
+    int ret;
+    int dp_error = DP_ERR_FATAL;
+    struct be_req *be_req;
+    struct ipa_subdomains_req_ctx *ctx = tevent_req_callback_data(req,
+                                                       struct ipa_subdomains_req_ctx);
+    ret = sdap_id_op_connect_recv(req, &dp_error);
+    talloc_zfree(req);
+    if (ret) {
+        if (dp_error == DP_ERR_OFFLINE) {
+            DEBUG(SSSDBG_MINOR_FAILURE,
+                  ("No IPA server is available, cannot get the "
+                   "subdomain list while offline\n"));
+
+/* FIXME: return saved results ?? */
+        } else {
+            DEBUG(SSSDBG_OP_FAILURE,
+                  ("Failed to connect to IPA server: [%d](%s)\n",
+                   ret, strerror(ret)));
+        }
+
+        goto fail;
+    }
+
+    ret = ipa_subdomains_handler_next(ctx);
+    if (ret != EOK && ret != EAGAIN) {
+        goto fail;
+    }
+
+    return;
+
+fail:
+    be_req = ctx->be_req;
+    talloc_free(ctx);
+    ipa_subdomains_reply(be_req, dp_error, ret);
+}
+
+static errno_t ipa_subdomains_handler_next(struct ipa_subdomains_req_ctx *ctx)
+{
+    struct tevent_req *req;
+    struct sdap_search_base *base;
+    const char *attrs[] = {"cn",
+                           "ipaNTFlatName",
+                           "ipaNTTrustedDomainSID",
+                           NULL};
+
+    base = ctx->search_bases[ctx->search_base_iter];
+    if (base == NULL) {
+        return EOK;
+    }
+
+    talloc_free(ctx->current_filter);
+    ctx->current_filter = sdap_get_id_specific_filter(ctx, SUBDOMAINS_FILTER,
+                                                      base->filter);
+    if (ctx->current_filter == NULL) {
+        return ENOMEM;
+    }
+
+    req = sdap_get_generic_send(ctx, ctx->be_req->be_ctx->ev,
+                        ctx->sd_ctx->sdap_id_ctx->opts,
+                        sdap_id_op_handle(ctx->sdap_op),
+                        base->basedn, base->scope,
+                        ctx->current_filter, attrs, NULL, 0,
+                        dp_opt_get_int(ctx->sd_ctx->sdap_id_ctx->opts->basic,
+                                       SDAP_SEARCH_TIMEOUT), false);
+
+    if (req == NULL) {
+        DEBUG(SSSDBG_OP_FAILURE, ("sdap_get_generic_send failed.\n"));
+        return ENOMEM;
+    }
+
+    tevent_req_set_callback(req, ipa_subdomains_handler_done, ctx);
+
+    return EAGAIN;
+}
+
+static void ipa_subdomains_handler_done(struct tevent_req *req)
+{
+    int ret;
+    struct be_req *be_req;
+    size_t reply_count;
+    struct sysdb_attrs **reply = NULL;
+    struct ipa_subdomains_req_ctx *ctx = tevent_req_callback_data(req,
+                                                       struct ipa_subdomains_req_ctx);
+
+    be_req = ctx->be_req;
+
+    ret = sdap_get_generic_recv(req, ctx, &reply_count, &reply);
+    talloc_zfree(req);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_OP_FAILURE, ("sdap_get_generic_send request failed.\n"));
+        goto done;
+    }
+
+    if (reply_count) {
+        ctx->reply = talloc_realloc(ctx, ctx->reply, struct sysdb_attrs *,
+                                    ctx->reply_count + reply_count);
+        if (ctx->reply == NULL) {
+            ret = ENOMEM;
+            goto done;
+        }
+        memcpy(ctx->reply+ctx->reply_count, reply,
+               reply_count * sizeof(struct sysdb_attrs *));
+        ctx->reply_count += reply_count;
+    }
+
+    ctx->search_base_iter++;
+    ret = ipa_subdomains_handler_next(ctx);
+    if (ret == EAGAIN) {
+        return;
+    } else if (ret != EOK) {
+        goto done;
+    }
+
+    ret = ipa_subdomains_parse_results(ctx->sd_data, ctx->reply_count, ctx->reply);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_OP_FAILURE, ("ipa_subdomains_parse_results request failed.\n"));
+        goto done;
+    }
+
+    ret = sysdb_update_subdomains(ctx->sd_ctx->sdap_id_ctx->be->sysdb,
+                                  ctx->sd_data->domain_list);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_update_subdomains failed.\n"));
+        goto done;
+    }
+
+    ret = EOK;
+
+done:
+    talloc_free(ctx);
+    ipa_subdomains_reply(be_req, (ret == EOK ? DP_ERR_OK : DP_ERR_FATAL), ret);
+}
diff --git a/src/providers/ipa/ipa_subdomains.h b/src/providers/ipa/ipa_subdomains.h
new file mode 100644
index 000000000..be62b1525
--- /dev/null
+++ b/src/providers/ipa/ipa_subdomains.h
@@ -0,0 +1,39 @@
+/*
+    SSSD
+
+    IPA Subdomains Module
+
+    Authors:
+        Sumit Bose <sbose@redhat.com>
+
+    Copyright (C) 2011 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_SUBDOMAINS_H_
+#define _IPA_SUBDOMAINS_H_
+
+#include "providers/dp_backend.h"
+#include "providers/ldap/ldap_common.h"
+
+struct ipa_subdomains_ctx {
+    struct sdap_id_ctx *sdap_id_ctx;
+    struct sdap_search_base **search_bases;
+};
+
+
+void ipa_subdomains_handler(struct be_req *be_req);
+
+#endif /* _IPA_SUBDOMAINS_H_ */