Sysdb routines for subdomains

1 files changed, 435 insertions, 0 deletions

diff --git a/src/db/sysdb_subdomains.c b/src/db/sysdb_subdomains.c
new file mode 100644
index 000000000..bac846ef7
--- /dev/null
+++ b/src/db/sysdb_subdomains.c
@@ -0,0 +1,435 @@
+/*
+   SSSD
+
+   System Database - Sub-domain related calls
+
+   Copyright (C) 2012 Jan Zeleny <jzeleny@redhat.com>
+   Copyright (C) 2012 Sumit Bose <sbose@redhat.com>
+
+   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 "db/sysdb_private.h"
+
+errno_t sysdb_get_subdomains(TALLOC_CTX *mem_ctx, struct sysdb_ctx *sysdb,
+                             size_t *subdomain_count,
+                             struct subdomain_info ***subdomain_list)
+{
+    int i;
+    errno_t ret;
+    TALLOC_CTX *tmp_ctx;
+    struct ldb_result *res;
+    const char *attrs[] = {"cn",
+                           SYSDB_SUBDOMAIN_FLAT,
+                           SYSDB_SUBDOMAIN_ID,
+                           NULL};
+    struct subdomain_info **list;
+    struct ldb_dn *basedn;
+    const char *tmp_str;
+
+    tmp_ctx = talloc_new(NULL);
+    if (tmp_ctx == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    basedn = ldb_dn_new(tmp_ctx, sysdb->ldb, SYSDB_BASE);
+    if (basedn == NULL) {
+        ret = EIO;
+        goto done;
+    }
+    ret = ldb_search(sysdb->ldb, tmp_ctx, &res,
+                     basedn, LDB_SCOPE_ONELEVEL,
+                     attrs, "objectclass=%s", SYSDB_SUBDOMAIN_CLASS);
+    if (ret != LDB_SUCCESS) {
+        ret = EIO;
+        goto done;
+    }
+
+    list = talloc_zero_array(tmp_ctx, struct subdomain_info *, res->count);
+    if (list == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    for (i = 0; i < res->count; i++) {
+        list[i] = talloc_zero(list, struct subdomain_info);
+        if (list[i] == NULL) {
+            ret = ENOMEM;
+            goto done;
+        }
+        tmp_str = ldb_msg_find_attr_as_string(res->msgs[i], "cn", NULL);
+        if (tmp_str == NULL) {
+            DEBUG(SSSDBG_MINOR_FAILURE, ("The object [%s] doesn't have a name\n",
+                                         ldb_dn_get_linearized(res->msgs[i]->dn)));
+            ret = EINVAL;
+            goto done;
+        }
+
+        list[i]->name = talloc_strdup(list, tmp_str);
+        if (list[i]->name == NULL) {
+            ret = ENOMEM;
+            goto done;
+        }
+
+        tmp_str = ldb_msg_find_attr_as_string(res->msgs[i], SYSDB_SUBDOMAIN_FLAT, NULL);
+        if (tmp_str != NULL) {
+            list[i]->flat_name = talloc_strdup(list, tmp_str);
+            if (list[i]->flat_name == NULL) {
+                ret = ENOMEM;
+                goto done;
+            }
+        }
+
+        tmp_str = ldb_msg_find_attr_as_string(res->msgs[i], SYSDB_SUBDOMAIN_ID, NULL);
+        if (tmp_str != NULL) {
+            list[i]->id = talloc_strdup(list, tmp_str);
+            if (list[i]->id == NULL) {
+                ret = ENOMEM;
+                goto done;
+            }
+        }
+    }
+
+    *subdomain_count = res->count;
+    *subdomain_list = talloc_steal(mem_ctx, list);
+    ret = EOK;
+
+done:
+    talloc_free(tmp_ctx);
+    return ret;
+}
+
+static errno_t sysdb_add_subdomain_attributes(struct sysdb_ctx *sysdb,
+                                             struct subdomain_info *domain_info)
+{
+    TALLOC_CTX *tmp_ctx;
+    struct ldb_message *msg;
+    int ret;
+
+    tmp_ctx = talloc_new(NULL);
+    if (tmp_ctx == NULL) {
+        return ENOMEM;
+    }
+
+    msg = ldb_msg_new(tmp_ctx);
+    if (msg == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    msg->dn = ldb_dn_new_fmt(msg, sysdb->ldb, SYSDB_DOM_BASE,
+                             domain_info->name);
+    if (msg->dn == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    ret = ldb_msg_add_empty(msg, SYSDB_OBJECTCLASS, LDB_FLAG_MOD_ADD, NULL);
+    if (ret != LDB_SUCCESS) {
+        ret = sysdb_error_to_errno(ret);
+        goto done;
+    }
+
+    ret = ldb_msg_add_fmt(msg, SYSDB_OBJECTCLASS, "%s", SYSDB_SUBDOMAIN_CLASS);
+    if (ret != LDB_SUCCESS) {
+        ret = sysdb_error_to_errno(ret);;
+        goto done;
+    }
+
+    if (domain_info->flat_name != NULL) {
+        ret = ldb_msg_add_empty(msg, SYSDB_SUBDOMAIN_FLAT, LDB_FLAG_MOD_ADD,
+                                NULL);
+        if (ret != LDB_SUCCESS) {
+            ret = sysdb_error_to_errno(ret);
+            goto done;
+        }
+
+        ret = ldb_msg_add_fmt(msg, SYSDB_SUBDOMAIN_FLAT, "%s",
+                              domain_info->flat_name);
+        if (ret != LDB_SUCCESS) {
+            ret = sysdb_error_to_errno(ret);;
+            goto done;
+        }
+    }
+
+    if (domain_info->id != NULL) {
+        ret = ldb_msg_add_empty(msg, SYSDB_SUBDOMAIN_ID, LDB_FLAG_MOD_ADD,
+                                NULL);
+        if (ret != LDB_SUCCESS) {
+            ret = sysdb_error_to_errno(ret);
+            goto done;
+        }
+
+        ret = ldb_msg_add_fmt(msg, SYSDB_SUBDOMAIN_ID, "%s",
+                              domain_info->id);
+        if (ret != LDB_SUCCESS) {
+            ret = sysdb_error_to_errno(ret);;
+            goto done;
+        }
+    }
+
+    ret = ldb_modify(sysdb->ldb, msg);
+    if (ret != LDB_SUCCESS) {
+        DEBUG(SSSDBG_FATAL_FAILURE, ("Failed to add subdomain attributes to "
+                                     "[%s]: [%d][%s]!\n",
+                                     domain_info->name, ret,
+                                     ldb_errstring(sysdb->ldb)));
+        ret = sysdb_error_to_errno(ret);
+        goto done;
+    }
+
+    ret = EOK;
+
+done:
+    talloc_free(tmp_ctx);
+
+    return ret;
+}
+
+errno_t sysdb_update_subdomains(struct sysdb_ctx *sysdb,
+                                struct subdomain_info **subdomains)
+{
+    int ret;
+    int sret;
+    size_t c;
+    size_t d;
+    TALLOC_CTX *tmp_ctx = NULL;
+    size_t cur_subdomains_count;
+    struct subdomain_info **cur_subdomains;
+    struct ldb_dn *dn;
+    bool in_transaction = false;
+    bool *keep_subdomain;
+
+    tmp_ctx = talloc_new(NULL);
+    if (tmp_ctx == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    /* Retrieve all subdomains that are currently in sysdb */
+    ret = sysdb_get_subdomains(tmp_ctx, sysdb, &cur_subdomains_count,
+                               &cur_subdomains);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_get_subdomains failed.\n"));
+        goto done;
+    }
+
+    keep_subdomain = talloc_zero_array(tmp_ctx, bool, cur_subdomains_count);
+    if (keep_subdomain == NULL) {
+        ret = ENOMEM;
+        DEBUG(SSSDBG_OP_FAILURE, ("talloc_zero_array failed.\n"));
+        goto done;
+    }
+
+    ret = sysdb_transaction_start(sysdb);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_transaction_start failed.\n"));
+        goto done;
+    }
+    in_transaction = true;
+
+    /* Go through a list of retrieved subdomains and:
+     * - if a subdomain already exists in sysdb, mark it for preservation
+     * - if the subdomain doesn't exist in sysdb, create its bare structure
+     */
+    for (c = 0; subdomains[c] != NULL; c++) {
+        for (d = 0; d < cur_subdomains_count; d++) {
+            if (strcasecmp(subdomains[c]->name, cur_subdomains[d]->name) == 0) {
+                keep_subdomain[d] = true;
+                /* sub-domain already in cache, nothing to do */
+                break;
+            }
+        }
+
+        if (d == cur_subdomains_count) {
+            DEBUG(SSSDBG_TRACE_FUNC, ("Adding sub-domain [%s].\n",
+                                      subdomains[c]->name));
+            ret = sysdb_domain_create(sysdb, subdomains[c]->name);
+            if (ret != EOK) {
+                DEBUG(SSSDBG_OP_FAILURE, ("sysdb_domain_create failed.\n"));
+                goto done;
+            }
+
+            ret = sysdb_add_subdomain_attributes(sysdb, subdomains[c]);
+            if (ret != EOK) {
+                DEBUG(SSSDBG_OP_FAILURE,
+                      ("sysdb_add_subdomain_attributes failed.\n"));
+                goto done;
+            }
+        }
+    }
+
+    /* Now delete all subdomains that have been in sysdb prior to
+     * refreshing the list and are not marked for preservation
+     * (i.e. they are not in the new list of subdomains)
+     */
+    for (d = 0; d < cur_subdomains_count; d++) {
+        if (!keep_subdomain[d]) {
+            DEBUG(SSSDBG_TRACE_FUNC, ("Removing sub-domain [%s].\n",
+                                      cur_subdomains[d]->name));
+            dn = ldb_dn_new_fmt(tmp_ctx, sysdb->ldb, SYSDB_DOM_BASE,
+                                cur_subdomains[d]->name);
+            if (dn == NULL) {
+                ret = ENOMEM;
+                goto done;
+            }
+
+            ret = sysdb_delete_recursive(sysdb, dn, true);
+            if (ret != EOK) {
+                DEBUG(SSSDBG_OP_FAILURE, ("sysdb_delete_recursive failed.\n"));
+                goto done;
+            }
+        }
+    }
+
+    ret = sysdb_transaction_commit(sysdb);
+    if (ret == EOK) {
+        in_transaction = false;
+    } else {
+        DEBUG(SSSDBG_MINOR_FAILURE, ("Could not commit transaction\n"));
+    }
+
+done:
+    if (in_transaction) {
+        sret = sysdb_transaction_cancel(sysdb);
+        if (sret != EOK) {
+            DEBUG(SSSDBG_CRIT_FAILURE, ("Could not cancel transaction\n"));
+        }
+    }
+    talloc_free(tmp_ctx);
+    return ret;
+}
+
+errno_t sysdb_get_subdomain_context(TALLOC_CTX *mem_ctx,
+                                    struct sysdb_ctx *sysdb,
+                                    struct sss_domain_info *subdomain,
+                                    struct sysdb_ctx **subdomain_ctx)
+{
+    struct sysdb_ctx *new_ctx;
+
+    new_ctx = talloc_zero(mem_ctx, struct sysdb_ctx);
+    if (new_ctx == NULL) {
+        return ENOMEM;
+    }
+
+    new_ctx->domain = subdomain;
+    new_ctx->mpg = true;
+
+    new_ctx->ldb = sysdb->ldb;
+    new_ctx->ldb_file = sysdb->ldb_file;
+
+    *subdomain_ctx = new_ctx;
+
+    return EOK;
+}
+
+#define CHECK_DOMAIN_INFO(dom_info) do { \
+    if (dom_info == NULL || dom_info->sysdb == NULL) { \
+        DEBUG(SSSDBG_OP_FAILURE, ("Invalid domain info.\n")); \
+        return EINVAL; \
+    } \
+} while(0)
+
+errno_t sysdb_search_domuser_by_name(TALLOC_CTX *mem_ctx,
+                                     struct sss_domain_info *domain,
+                                     const char *name,
+                                     const char **attrs,
+                                     struct ldb_message **msg)
+{
+    CHECK_DOMAIN_INFO(domain);
+
+    return sysdb_search_user_by_name(mem_ctx, domain->sysdb, name, attrs, msg);
+}
+
+errno_t sysdb_search_domuser_by_uid(TALLOC_CTX *mem_ctx,
+                                    struct sss_domain_info *domain,
+                                    uid_t uid,
+                                    const char **attrs,
+                                    struct ldb_message **msg)
+{
+    CHECK_DOMAIN_INFO(domain);
+
+    return sysdb_search_user_by_uid(mem_ctx, domain->sysdb, uid, attrs, msg);
+}
+
+errno_t sysdb_store_domuser(struct sss_domain_info *domain,
+                            const char *name,
+                            const char *pwd,
+                            uid_t uid, gid_t gid,
+                            const char *gecos,
+                            const char *homedir,
+                            const char *shell,
+                            struct sysdb_attrs *attrs,
+                            char **remove_attrs,
+                            uint64_t cache_timeout,
+                            time_t now)
+{
+    CHECK_DOMAIN_INFO(domain);
+
+    return sysdb_store_user(domain->sysdb, name, pwd, uid, gid, gecos, homedir,
+                            shell, attrs, remove_attrs, cache_timeout, now);
+}
+
+errno_t sysdb_delete_domuser(struct sss_domain_info *domain,
+                             const char *name, uid_t uid)
+{
+    CHECK_DOMAIN_INFO(domain);
+
+    return sysdb_delete_user(domain->sysdb, name, uid);
+}
+
+errno_t sysdb_search_domgroup_by_name(TALLOC_CTX *mem_ctx,
+                                      struct sss_domain_info *domain,
+                                      const char *name,
+                                      const char **attrs,
+                                      struct ldb_message **msg)
+{
+    CHECK_DOMAIN_INFO(domain);
+
+    return sysdb_search_group_by_name(mem_ctx, domain->sysdb, name, attrs, msg);
+}
+
+errno_t sysdb_search_domgroup_by_gid(TALLOC_CTX *mem_ctx,
+                                     struct sss_domain_info *domain,
+                                     gid_t gid,
+                                     const char **attrs,
+                                     struct ldb_message **msg)
+{
+    CHECK_DOMAIN_INFO(domain);
+
+    return sysdb_search_group_by_gid(mem_ctx, domain->sysdb, gid, attrs, msg);
+}
+
+errno_t sysdb_store_domgroup(struct sss_domain_info *domain,
+                             const char *name,
+                             gid_t gid,
+                             struct sysdb_attrs *attrs,
+                             uint64_t cache_timeout,
+                             time_t now)
+{
+    CHECK_DOMAIN_INFO(domain);
+
+    return sysdb_store_group(domain->sysdb, name, gid, attrs, cache_timeout,
+                             now);
+}
+
+errno_t sysdb_delete_domgroup(struct sss_domain_info *domain,
+                              const char *name, gid_t gid)
+{
+    CHECK_DOMAIN_INFO(domain);
+
+    return sysdb_delete_group(domain->sysdb, name, gid);
+}