Regroup database rleated functions under db and

rename everything with the sysdb suffix.

2 files changed, 1273 insertions, 0 deletions

diff --git a/server/db/sysdb.c b/server/db/sysdb.c
new file mode 100644
index 000000000..aedf7ef2c
--- /dev/null
+++ b/server/db/sysdb.c
@@ -0,0 +1,1125 @@
+/*
+   SSSD
+
+   System Database
+
+   Copyright (C) Simo Sorce <ssorce@redhat.com>	2008
+
+   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.h"
+#include "confdb/confdb.h"
+#include <time.h>
+
+struct sysdb_search_ctx {
+    struct sysdb_ctx *dbctx;
+    const char *base_dn;
+    sysdb_callback_t callback;
+    void *ptr;
+    struct ldb_result *res;
+};
+
+static int sysdb_error_to_errno(int lerr)
+{
+    /* fake it up for now, requires a mapping table */
+    return EIO;
+}
+
+static void request_error(struct sysdb_search_ctx *sctx, int ldb_error)
+{
+    sctx->callback(sctx->ptr, sysdb_error_to_errno(ldb_error), sctx->res);
+}
+
+static void request_done(struct sysdb_search_ctx *sctx)
+{
+    sctx->callback(sctx->ptr, EOK, sctx->res);
+}
+
+static int get_gen_callback(struct ldb_request *req,
+                            struct ldb_reply *ares)
+{
+    struct sysdb_search_ctx *sctx;
+    struct ldb_result *res;
+    int n;
+
+    sctx = talloc_get_type(req->context, struct sysdb_search_ctx);
+    res = sctx->res;
+
+    if (!ares) {
+        request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+        return LDB_ERR_OPERATIONS_ERROR;
+    }
+    if (ares->error != LDB_SUCCESS) {
+        request_error(sctx, ares->error);
+        return ares->error;
+    }
+
+    switch (ares->type) {
+    case LDB_REPLY_ENTRY:
+        res->msgs = talloc_realloc(res, res->msgs,
+                                   struct ldb_message *,
+                                   res->count + 2);
+        if (!res->msgs) {
+            request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+            return LDB_ERR_OPERATIONS_ERROR;
+        }
+
+        res->msgs[res->count + 1] = NULL;
+
+        res->msgs[res->count] = talloc_steal(res->msgs, ares->message);
+        res->count++;
+        break;
+
+    case LDB_REPLY_REFERRAL:
+        if (res->refs) {
+            for (n = 0; res->refs[n]; n++) /*noop*/ ;
+        } else {
+            n = 0;
+        }
+
+        res->refs = talloc_realloc(res, res->refs, char *, n + 2);
+        if (! res->refs) {
+            request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+            return LDB_ERR_OPERATIONS_ERROR;
+        }
+
+        res->refs[n] = talloc_steal(res->refs, ares->referral);
+        res->refs[n + 1] = NULL;
+        break;
+
+    case LDB_REPLY_DONE:
+        res->controls = talloc_steal(res, ares->controls);
+
+        /* this is the last message, and means the request is done */
+        request_done(sctx);
+        return LDB_SUCCESS;
+    }
+
+    talloc_free(ares);
+    return LDB_SUCCESS;
+}
+
+static struct sysdb_search_ctx *init_src_ctx(TALLOC_CTX *mem_ctx,
+                                             const char *base_dn,
+                                             struct sysdb_ctx *ctx,
+                                             sysdb_callback_t fn,
+                                             void *ptr)
+{
+    struct sysdb_search_ctx *sctx;
+
+    sctx = talloc(mem_ctx, struct sysdb_search_ctx);
+    if (!sctx) {
+        return NULL;
+    }
+    sctx->dbctx = ctx;
+    sctx->base_dn = base_dn;
+    sctx->callback = fn;
+    sctx->ptr = ptr;
+    sctx->res = talloc_zero(sctx, struct ldb_result);
+    if (!sctx->res) {
+        talloc_free(sctx);
+        return NULL;
+    }
+
+    return sctx;
+}
+
+/* users */
+
+static int pwd_search(struct sysdb_search_ctx *sctx,
+                      struct sysdb_ctx *ctx,
+                      const char *expression)
+{
+    static const char *attrs[] = SYSDB_PW_ATTRS;
+    struct ldb_request *req;
+    int ret;
+
+    ret = ldb_build_search_req(&req, ctx->ldb, sctx,
+                               ldb_dn_new(sctx, ctx->ldb, sctx->base_dn),
+                               LDB_SCOPE_SUBTREE,
+                               expression, attrs, NULL,
+                               sctx, get_gen_callback,
+                               NULL);
+    if (ret != LDB_SUCCESS) {
+        return sysdb_error_to_errno(ret);
+    }
+
+    ret = ldb_request(ctx->ldb, req);
+    if (ret != LDB_SUCCESS) {
+        return sysdb_error_to_errno(ret);
+    }
+
+    return EOK;
+}
+
+int sysdb_getpwnam(TALLOC_CTX *mem_ctx,
+                   struct event_context *ev,
+                   struct sysdb_ctx *ctx,
+                   const char *domain,
+                   const char *name,
+                   sysdb_callback_t fn, void *ptr)
+{
+    struct sysdb_search_ctx *sctx;
+    const char *base_dn;
+    char *expression;
+
+    if (domain) {
+        base_dn = talloc_asprintf(mem_ctx, SYSDB_TMPL_USER_BASE, domain);
+    } else {
+        base_dn = SYSDB_BASE;
+    }
+    if (!base_dn) {
+        return ENOMEM;
+    }
+
+    sctx = init_src_ctx(mem_ctx, base_dn, ctx, fn, ptr);
+    if (!sctx) {
+        return ENOMEM;
+    }
+
+    expression = talloc_asprintf(sctx, SYSDB_PWNAM_FILTER, name);
+    if (!expression) {
+        talloc_free(sctx);
+        return ENOMEM;
+    }
+
+    return pwd_search(sctx, ctx, expression);
+}
+
+int sysdb_getpwuid(TALLOC_CTX *mem_ctx,
+                   struct event_context *ev,
+                   struct sysdb_ctx *ctx,
+                   const char *domain,
+                   uint64_t uid,
+                   sysdb_callback_t fn, void *ptr)
+{
+    struct sysdb_search_ctx *sctx;
+    unsigned long int filter_uid = uid;
+    const char *base_dn;
+    char *expression;
+
+    if (domain) {
+        base_dn = talloc_asprintf(mem_ctx, SYSDB_TMPL_USER_BASE, domain);
+    } else {
+        base_dn = SYSDB_BASE;
+    }
+    if (!base_dn) {
+        return ENOMEM;
+    }
+
+    sctx = init_src_ctx(mem_ctx, base_dn, ctx, fn, ptr);
+    if (!sctx) {
+        return ENOMEM;
+    }
+
+    expression = talloc_asprintf(sctx, SYSDB_PWUID_FILTER, filter_uid);
+    if (!expression) {
+        talloc_free(sctx);
+        return ENOMEM;
+    }
+
+    return pwd_search(sctx, ctx, expression);
+}
+
+int sysdb_enumpwent(TALLOC_CTX *mem_ctx,
+                    struct event_context *ev,
+                    struct sysdb_ctx *ctx,
+                    sysdb_callback_t fn, void *ptr)
+{
+    struct sysdb_search_ctx *sctx;
+
+    sctx = init_src_ctx(mem_ctx, SYSDB_BASE, ctx, fn, ptr);
+    if (!sctx) {
+        return ENOMEM;
+    }
+
+    return pwd_search(sctx, ctx, SYSDB_PWENT_FILTER);
+}
+
+/* groups */
+
+struct get_mem_ctx {
+    struct sysdb_search_ctx *ret_sctx;
+    struct ldb_message **grps;
+    int num_grps;
+};
+
+static void get_members(void *ptr, int status, struct ldb_result *res)
+{
+    struct sysdb_ctx *ctx;
+    struct sysdb_search_ctx *sctx;
+    struct get_mem_ctx *gmctx;
+    struct sysdb_search_ctx *mem_sctx;
+    struct ldb_request *req;
+    struct ldb_message *msg;
+    struct ldb_result *ret_res;
+    static const char *attrs[] = SYSDB_GRPW_ATTRS;
+    const char *expression;
+    int ret, i;
+
+    sctx = talloc_get_type(ptr, struct sysdb_search_ctx);
+    gmctx = talloc_get_type(sctx->ptr, struct get_mem_ctx);
+    ctx = sctx->dbctx;
+
+    if (status != LDB_SUCCESS) {
+        return request_error(gmctx->ret_sctx, status);
+    }
+
+    ret_res = gmctx->ret_sctx->res;
+
+    /* append previous search results to final (if any) */
+    if (res && res->count != 0) {
+        ret_res->msgs = talloc_realloc(ret_res, ret_res->msgs,
+                                       struct ldb_message *,
+                                       ret_res->count + res->count + 1);
+        for(i = 0; i < res->count; i++) {
+            ret_res->msgs[ret_res->count] = talloc_steal(ret_res, res->msgs[i]);
+            ret_res->count++;
+        }
+        ret_res->msgs[ret_res->count] = NULL;
+    }
+
+    if (gmctx->grps[0] == NULL) {
+        return request_done(gmctx->ret_sctx);
+    }
+
+    mem_sctx = init_src_ctx(gmctx, SYSDB_BASE, ctx, get_members, sctx);
+    if (!mem_sctx) {
+        return request_error(gmctx->ret_sctx, LDB_ERR_OPERATIONS_ERROR);
+    }
+
+    /* fetch next group to search for members */
+    gmctx->num_grps--;
+    msg = gmctx->grps[gmctx->num_grps];
+    gmctx->grps[gmctx->num_grps] = NULL;
+
+    /* queue the group entry on the final result structure */
+    ret_res->msgs = talloc_realloc(ret_res, ret_res->msgs,
+                                   struct ldb_message *,
+                                   ret_res->count + 2);
+    if (!ret_res->msgs) {
+        return request_error(gmctx->ret_sctx, LDB_ERR_OPERATIONS_ERROR);
+    }
+    ret_res->msgs[ret_res->count + 1] = NULL;
+    ret_res->msgs[ret_res->count] = talloc_steal(ret_res->msgs, msg);
+    ret_res->count++;
+
+    /* search for this group members */
+    expression = talloc_asprintf(mem_sctx, SYSDB_GRNA2_FILTER,
+                                 ldb_dn_get_linearized(msg->dn));
+    if (!expression) {
+        return request_error(gmctx->ret_sctx, LDB_ERR_OPERATIONS_ERROR);
+    }
+
+    ret = ldb_build_search_req(&req, ctx->ldb, mem_sctx,
+                               ldb_dn_new(mem_sctx, ctx->ldb, sctx->base_dn),
+                               LDB_SCOPE_SUBTREE,
+                               expression, attrs, NULL,
+                               mem_sctx, get_gen_callback,
+                               NULL);
+    if (ret != LDB_SUCCESS) {
+        return request_error(gmctx->ret_sctx, ret);
+    }
+
+    ret = ldb_request(ctx->ldb, req);
+    if (ret != LDB_SUCCESS) {
+        return request_error(gmctx->ret_sctx, ret);
+    }
+}
+
+static int get_grp_callback(struct ldb_request *req,
+                            struct ldb_reply *ares)
+{
+    struct sysdb_search_ctx *sctx;
+    struct sysdb_ctx *ctx;
+    struct ldb_result *res;
+    int n;
+
+    sctx = talloc_get_type(req->context, struct sysdb_search_ctx);
+    ctx = sctx->dbctx;
+    res = sctx->res;
+
+    if (!ares) {
+        request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+        return LDB_ERR_OPERATIONS_ERROR;
+    }
+    if (ares->error != LDB_SUCCESS) {
+        request_error(sctx, ares->error);
+        return ares->error;
+    }
+
+    switch (ares->type) {
+    case LDB_REPLY_ENTRY:
+        res->msgs = talloc_realloc(res, res->msgs,
+                                   struct ldb_message *,
+                                   res->count + 2);
+        if (!res->msgs) {
+            request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+            return LDB_ERR_OPERATIONS_ERROR;
+        }
+
+        res->msgs[res->count + 1] = NULL;
+
+        res->msgs[res->count] = talloc_steal(res->msgs, ares->message);
+        res->count++;
+        break;
+
+    case LDB_REPLY_REFERRAL:
+        if (res->refs) {
+            for (n = 0; res->refs[n]; n++) /*noop*/ ;
+        } else {
+            n = 0;
+        }
+
+        res->refs = talloc_realloc(res, res->refs, char *, n + 2);
+        if (! res->refs) {
+            request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+            return LDB_ERR_OPERATIONS_ERROR;
+        }
+
+        res->refs[n] = talloc_steal(res->refs, ares->referral);
+        res->refs[n + 1] = NULL;
+        break;
+
+    case LDB_REPLY_DONE:
+        res->controls = talloc_steal(res, ares->controls);
+
+        /* no results, return */
+        if (res->count == 0) {
+            request_done(sctx);
+            return LDB_SUCCESS;
+        }
+        if (res->count > 0) {
+            struct get_mem_ctx *gmctx;
+
+            gmctx = talloc_zero(req, struct get_mem_ctx);
+            if (!gmctx) {
+                request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+                return LDB_ERR_OPERATIONS_ERROR;
+            }
+            gmctx->ret_sctx = sctx;
+            gmctx->grps = talloc_steal(gmctx, res->msgs);
+            gmctx->num_grps = res->count;
+            res->msgs = NULL;
+            res->count = 0;
+
+            /* re-use sctx to create a fake handler for the first call to
+             * get_members() */
+            sctx = init_src_ctx(gmctx, SYSDB_BASE, ctx, get_members, gmctx);
+
+            get_members(sctx, LDB_SUCCESS, NULL);
+            return LDB_SUCCESS;
+        }
+
+        /* anything else is an error */
+        request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+        return LDB_ERR_OPERATIONS_ERROR;
+    }
+
+    talloc_free(ares);
+    return LDB_SUCCESS;
+}
+
+static int grp_search(struct sysdb_search_ctx *sctx,
+                      struct sysdb_ctx *ctx,
+                      const char *expression)
+{
+    static const char *attrs[] = SYSDB_GRNAM_ATTRS;
+    struct ldb_request *req;
+    int ret;
+
+    ret = ldb_build_search_req(&req, ctx->ldb, sctx,
+                               ldb_dn_new(sctx, ctx->ldb, sctx->base_dn),
+                               LDB_SCOPE_SUBTREE,
+                               expression, attrs, NULL,
+                               sctx, get_grp_callback,
+                               NULL);
+    if (ret != LDB_SUCCESS) {
+        return sysdb_error_to_errno(ret);
+    }
+
+    ret = ldb_request(ctx->ldb, req);
+    if (ret != LDB_SUCCESS) {
+        return sysdb_error_to_errno(ret);
+    }
+
+    return EOK;
+}
+
+int sysdb_getgrnam(TALLOC_CTX *mem_ctx,
+                   struct event_context *ev,
+                   struct sysdb_ctx *ctx,
+                   const char *domain,
+                   const char *name,
+                   sysdb_callback_t fn, void *ptr)
+{
+    struct sysdb_search_ctx *sctx;
+    const char *base_dn;
+    char *expression;
+
+    if (domain) {
+        base_dn = talloc_asprintf(mem_ctx, SYSDB_TMPL_GROUP_BASE, domain);
+    } else {
+        base_dn = SYSDB_BASE;
+    }
+    if (!base_dn) {
+        return ENOMEM;
+    }
+
+    sctx = init_src_ctx(mem_ctx, base_dn, ctx, fn, ptr);
+    if (!sctx) {
+        return ENOMEM;
+    }
+
+    expression = talloc_asprintf(sctx, SYSDB_GRNAM_FILTER, name);
+    if (!expression) {
+        talloc_free(sctx);
+        return ENOMEM;
+    }
+
+    return grp_search(sctx, ctx, expression);
+}
+
+int sysdb_getgrgid(TALLOC_CTX *mem_ctx,
+                   struct event_context *ev,
+                   struct sysdb_ctx *ctx,
+                   const char *domain,
+                   uint64_t gid,
+                   sysdb_callback_t fn, void *ptr)
+{
+    struct sysdb_search_ctx *sctx;
+    unsigned long int filter_gid = gid;
+    const char *base_dn;
+    char *expression;
+
+    if (domain) {
+        base_dn = talloc_asprintf(mem_ctx, SYSDB_TMPL_GROUP_BASE, domain);
+    } else {
+        base_dn = SYSDB_BASE;
+    }
+    if (!base_dn) {
+        return ENOMEM;
+    }
+
+    sctx = init_src_ctx(mem_ctx, base_dn, ctx, fn, ptr);
+    if (!sctx) {
+        return ENOMEM;
+    }
+
+    expression = talloc_asprintf(sctx, SYSDB_GRGID_FILTER, filter_gid);
+    if (!expression) {
+        talloc_free(sctx);
+        return ENOMEM;
+    }
+
+    return grp_search(sctx, ctx, expression);
+}
+
+int sysdb_enumgrent(TALLOC_CTX *mem_ctx,
+                    struct event_context *ev,
+                    struct sysdb_ctx *ctx,
+                    sysdb_callback_t fn, void *ptr)
+{
+    struct sysdb_search_ctx *sctx;
+
+    sctx = init_src_ctx(mem_ctx, SYSDB_BASE, ctx, fn, ptr);
+    if (!sctx) {
+        return ENOMEM;
+    }
+
+    return grp_search(sctx, ctx, SYSDB_GRENT_FILTER);
+}
+
+static void sysdb_initgr_search(void *ptr, int status,
+                                struct ldb_result *res)
+{
+    struct sysdb_ctx *ctx;
+    struct sysdb_search_ctx *sctx;
+    char *expression;
+    struct ldb_request *req;
+    struct ldb_control **ctrl;
+    struct ldb_asq_control *control;
+    static const char *attrs[] = SYSDB_INITGR_ATTRS;
+    int ret;
+
+    sctx = talloc_get_type(ptr, struct sysdb_search_ctx);
+    ctx = sctx->dbctx;
+
+    if (res->count == 0) {
+        return request_done(sctx);
+    }
+    if (res->count > 1) {
+        return request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+    }
+
+    expression = talloc_asprintf(sctx, SYSDB_INITGR_FILTER);
+    if (!expression) {
+        return request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+    }
+
+    ctrl = talloc_array(sctx, struct ldb_control *, 2);
+    if (!ctrl) {
+        return request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+    }
+    ctrl[1] = NULL;
+    ctrl[0] = talloc(ctrl, struct ldb_control);
+    if (!ctrl[0]) {
+        return request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+    }
+    ctrl[0]->oid = LDB_CONTROL_ASQ_OID;
+    ctrl[0]->critical = 1;
+    control = talloc(ctrl[0], struct ldb_asq_control);
+    if (!control) {
+        return request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+    }
+    control->request = 1;
+    control->source_attribute = talloc_strdup(control, SYSDB_INITGR_ATTR);
+    if (!control->source_attribute) {
+        return request_error(sctx, LDB_ERR_OPERATIONS_ERROR);
+    }
+    control->src_attr_len = strlen(control->source_attribute);
+    ctrl[0]->data = control;
+
+    ret = ldb_build_search_req(&req, ctx->ldb, sctx,
+                               res->msgs[0]->dn,
+                               LDB_SCOPE_BASE,
+                               expression, attrs, ctrl,
+                               sctx, get_gen_callback,
+                               NULL);
+    if (ret != LDB_SUCCESS) {
+        return request_error(sctx, ret);
+    }
+
+    ret = ldb_request(ctx->ldb, req);
+    if (ret != LDB_SUCCESS) {
+        return request_error(sctx, ret);
+    }
+}
+
+int sysdb_initgroups(TALLOC_CTX *mem_ctx,
+                     struct event_context *ev,
+                     struct sysdb_ctx *ctx,
+                     const char *domain,
+                     const char *name,
+                     sysdb_callback_t fn, void *ptr)
+{
+    static const char *attrs[] = SYSDB_PW_ATTRS;
+    struct sysdb_search_ctx *ret_sctx;
+    struct sysdb_search_ctx *sctx;
+    const char *base_dn;
+    char *expression;
+    struct ldb_request *req;
+    int ret;
+
+    if (domain) {
+        base_dn = talloc_asprintf(mem_ctx, SYSDB_TMPL_USER_BASE, domain);
+    } else {
+        base_dn = SYSDB_BASE;
+    }
+    if (!base_dn) {
+        return ENOMEM;
+    }
+
+    ret_sctx = init_src_ctx(mem_ctx, SYSDB_BASE, ctx, fn, ptr);
+    if (!ret_sctx) {
+        return ENOMEM;
+    }
+    sctx = init_src_ctx(ret_sctx, base_dn, ctx, sysdb_initgr_search, ret_sctx);
+    if (!sctx) {
+        talloc_free(sctx);
+        return ENOMEM;
+    }
+
+    expression = talloc_asprintf(sctx, SYSDB_PWNAM_FILTER, name);
+    if (!expression) {
+        talloc_free(sctx);
+        return ENOMEM;
+    }
+
+    ret = ldb_build_search_req(&req, ctx->ldb, sctx,
+                               ldb_dn_new(sctx, ctx->ldb, sctx->base_dn),
+                               LDB_SCOPE_SUBTREE,
+                               expression, attrs, NULL,
+                               sctx, get_gen_callback,
+                               NULL);
+    if (ret != LDB_SUCCESS) {
+        return sysdb_error_to_errno(ret);
+    }
+
+    ret = ldb_request(ctx->ldb, req);
+    if (ret != LDB_SUCCESS) {
+        return sysdb_error_to_errno(ret);
+    }
+
+    return LDB_SUCCESS;
+}
+
+static int sysdb_read_var(TALLOC_CTX *tmp_ctx,
+                          struct confdb_ctx *cdb,
+                          struct sysdb_ctx *ctx,
+                          const char *name,
+                          const char *def_value,
+                          const char **target)
+{
+    int ret;
+    char *t;
+    char **values;
+
+    ret = confdb_get_param(cdb, tmp_ctx,
+                           SYSDB_CONF_SECTION,
+                           name, &values);
+    if (ret != EOK)
+        return ret;
+
+    if (values[0])
+        t = talloc_steal(ctx, values[0]);
+    else
+        t = talloc_strdup(ctx, def_value);
+
+    *target = t;
+    return EOK;
+}
+
+static int sysdb_read_conf(TALLOC_CTX *mem_ctx,
+                           struct confdb_ctx *cdb,
+                           struct sysdb_ctx **dbctx)
+{
+    struct sysdb_ctx *ctx;
+    TALLOC_CTX *tmp_ctx;
+    char *default_ldb_path;
+    int ret;
+
+    tmp_ctx = talloc_new(mem_ctx);
+    if (!tmp_ctx)
+        return ENOMEM;
+
+    ctx = talloc(mem_ctx, struct sysdb_ctx);
+    if (!ctx) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    default_ldb_path = talloc_asprintf(tmp_ctx, "%s/%s", DB_PATH, SYSDB_FILE);
+    if (default_ldb_path == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    sysdb_read_var(tmp_ctx, cdb, ctx, "ldbFile",
+                     default_ldb_path, &ctx->ldb_file);
+    DEBUG(3, ("NSS LDB Cache Path: %s\n", ctx->ldb_file));
+
+    *dbctx = ctx;
+    ret = EOK;
+
+done:
+    talloc_free(tmp_ctx);
+    return ret;
+}
+
+int sysdb_store_account_posix(TALLOC_CTX *memctx,
+                              struct sysdb_ctx *sysdb,
+                              const char *domain,
+                              char *name, char *pwd,
+                              uint64_t uid, uint64_t gid,
+                              char *gecos, char *homedir, char *shell)
+{
+    TALLOC_CTX *tmp_ctx;
+    const char *attrs[] = { SYSDB_PW_NAME, NULL };
+    struct ldb_dn *account_dn;
+    struct ldb_message *msg;
+    struct ldb_request *req;
+	struct ldb_result *res;
+    int lret, ret;
+    int flags;
+
+    tmp_ctx = talloc_new(memctx);
+    if (!tmp_ctx) {
+        return ENOMEM;
+    }
+
+    account_dn = ldb_dn_new_fmt(tmp_ctx, sysdb->ldb,
+                                "uid=%s,"SYSDB_TMPL_USER_BASE,
+                                name, domain);
+    if (!account_dn) {
+        talloc_free(tmp_ctx);
+        return ENOMEM;
+    }
+
+    lret = ldb_transaction_start(sysdb->ldb);
+    if (lret != LDB_SUCCESS) {
+        DEBUG(1, ("Failed ldb transaction start !? (%d)\n", lret));
+        ret = EIO;
+        goto done;
+    }
+
+    lret = ldb_search(sysdb->ldb, tmp_ctx, &res, account_dn,
+                      LDB_SCOPE_BASE, attrs, SYSDB_PWENT_FILTER);
+    if (lret != LDB_SUCCESS) {
+        DEBUG(1, ("Failed to make search request: %s(%d)[%s]\n",
+                  ldb_strerror(lret), lret, ldb_errstring(sysdb->ldb)));
+        ret = EIO;
+        goto done;
+    }
+
+    req = NULL;
+
+    msg = ldb_msg_new(tmp_ctx);
+    if (!msg) {
+        ret = ENOMEM;
+        goto done;
+    }
+    msg->dn = account_dn;
+
+    switch (res->count) {
+    case 0:
+        flags = LDB_FLAG_MOD_ADD;
+        break;
+    case 1:
+        flags = LDB_FLAG_MOD_REPLACE;
+        break;
+    default:
+        DEBUG(0, ("Cache DB corrupted, base search returned %d results\n",
+                  res->count));
+        ret = EIO;
+        goto done;
+    }
+
+    talloc_free(res);
+    res = NULL;
+
+    if (flags == LDB_FLAG_MOD_ADD) {
+        /* TODO: retrieve user objectclass list from configuration */
+        lret = ldb_msg_add_empty(msg, "objectClass", flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, "objectClass", "user");
+        }
+        if (lret != LDB_SUCCESS) {
+            ret = errno;
+            goto done;
+        }
+
+        /* TODO: retrieve user name attribute from configuration */
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_NAME, flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, SYSDB_PW_NAME, name);
+        }
+        if (lret != LDB_SUCCESS) {
+            ret = errno;
+            goto done;
+        }
+    }
+
+    /* TODO: retrieve attribute name mappings from configuration */
+
+    /* pwd */
+    if (pwd && *pwd) {
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_PWD, flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, SYSDB_PW_PWD, pwd);
+        }
+    } else {
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_PWD,
+                                 LDB_FLAG_MOD_DELETE, NULL);
+    }
+    if (lret != LDB_SUCCESS) {
+        ret = errno;
+        goto done;
+    }
+
+    /* uid */
+    if (uid) {
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_UIDNUM, flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_fmt(msg, SYSDB_PW_UIDNUM,
+                                   "%lu", (unsigned long)uid);
+        }
+        if (lret != LDB_SUCCESS) {
+            ret = errno;
+            goto done;
+        }
+    } else {
+        DEBUG(0, ("Cached users can't have UID == 0\n"));
+        ret = EINVAL;
+        goto done;
+    }
+
+    /* gid */
+    if (gid) {
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_GIDNUM, flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_fmt(msg, SYSDB_PW_GIDNUM,
+                                   "%lu", (unsigned long)gid);
+        }
+        if (lret != LDB_SUCCESS) {
+            ret = errno;
+            goto done;
+        }
+    } else {
+        DEBUG(0, ("Cached users can't have GID == 0\n"));
+        ret = EINVAL;
+        goto done;
+    }
+
+    /* gecos */
+    if (gecos && *gecos) {
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_FULLNAME, flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, SYSDB_PW_FULLNAME, gecos);
+        }
+    } else {
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_FULLNAME,
+                                 LDB_FLAG_MOD_DELETE, NULL);
+    }
+    if (lret != LDB_SUCCESS) {
+        ret = errno;
+        goto done;
+    }
+
+    /* homedir */
+    if (homedir && *homedir) {
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_HOMEDIR, flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, SYSDB_PW_HOMEDIR, homedir);
+        }
+    } else {
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_HOMEDIR,
+                                 LDB_FLAG_MOD_DELETE, NULL);
+    }
+    if (lret != LDB_SUCCESS) {
+        ret = errno;
+        goto done;
+    }
+
+    /* shell */
+    if (shell && *shell) {
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_SHELL, flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, SYSDB_PW_SHELL, shell);
+        }
+    } else {
+        lret = ldb_msg_add_empty(msg, SYSDB_PW_SHELL,
+                                 LDB_FLAG_MOD_DELETE, NULL);
+    }
+    if (lret != LDB_SUCCESS) {
+        ret = errno;
+        goto done;
+    }
+
+    /* modification time */
+    lret = ldb_msg_add_empty(msg, SYSDB_LAST_UPDATE, flags, NULL);
+    if (lret == LDB_SUCCESS) {
+        lret = ldb_msg_add_fmt(msg, SYSDB_LAST_UPDATE,
+                               "%ld", (long int)time(NULL));
+    }
+    if (lret != LDB_SUCCESS) {
+        ret = errno;
+        goto done;
+    }
+
+    if (flags == LDB_FLAG_MOD_ADD) {
+        lret = ldb_build_add_req(&req, sysdb->ldb, tmp_ctx, msg, NULL,
+                                 NULL, ldb_op_default_callback, NULL);
+    } else {
+        lret = ldb_build_mod_req(&req, sysdb->ldb, tmp_ctx, msg, NULL,
+                                 NULL, ldb_op_default_callback, NULL);
+    }
+    if (lret == LDB_SUCCESS) {
+        lret = ldb_request(sysdb->ldb, req);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_wait(req->handle, LDB_WAIT_ALL);
+        }
+    }
+    if (lret != LDB_SUCCESS) {
+        DEBUG(1, ("Failed to make modify request: %s(%d)[%s]\n",
+                  ldb_strerror(lret), lret, ldb_errstring(sysdb->ldb)));
+        ret = EIO;
+        goto done;
+    }
+
+    lret = ldb_transaction_commit(sysdb->ldb);
+    if (lret != LDB_SUCCESS) {
+        DEBUG(1, ("Failed ldb transaction start !? (%d)\n", lret));
+        ret = EIO;
+        goto done;
+    }
+
+    ret = EOK;
+
+done:
+    if (ret != EOK) {
+        lret = ldb_transaction_cancel(sysdb->ldb);
+        if (lret != LDB_SUCCESS) {
+            DEBUG(1, ("Failed to cancel ldb transaction (%d)\n", lret));
+        }
+    }
+
+    talloc_free(tmp_ctx);
+    return ret;
+}
+
+int sysdb_remove_account_posix(TALLOC_CTX *memctx,
+                               struct sysdb_ctx *sysdb,
+                               const char *domain, const char *name)
+{
+    TALLOC_CTX *tmp_ctx;
+    struct ldb_dn *account_dn;
+    int ret;
+
+    tmp_ctx = talloc_new(memctx);
+    if (!tmp_ctx) {
+        return ENOMEM;
+    }
+
+    account_dn = ldb_dn_new_fmt(tmp_ctx, sysdb->ldb,
+                                "uid=%s,"SYSDB_TMPL_USER_BASE,
+                                name, domain);
+    if (!account_dn) {
+        talloc_free(tmp_ctx);
+        return ENOMEM;
+    }
+
+    ret = ldb_delete(sysdb->ldb, account_dn);
+
+    if (ret != LDB_SUCCESS) {
+        DEBUG(2, ("LDB Error: %s(%d)\nError Message: [%s]\n",
+              ldb_strerror(ret), ret, ldb_errstring(sysdb->ldb)));
+        ret = EIO;
+    }
+
+    talloc_free(tmp_ctx);
+    return ret;
+}
+
+int sysdb_remove_account_posix_by_uid(TALLOC_CTX *memctx,
+                                      struct sysdb_ctx *sysdb,
+                                      const char *domain, uid_t uid)
+{
+    TALLOC_CTX *tmp_ctx;
+    const char *attrs[] = { SYSDB_PW_NAME, SYSDB_PW_UIDNUM, NULL };
+    struct ldb_dn *base_dn;
+    struct ldb_dn *account_dn;
+	struct ldb_result *res;
+    int lret, ret;
+
+    tmp_ctx = talloc_new(memctx);
+    if (!tmp_ctx) {
+        return ENOMEM;
+    }
+
+    base_dn = ldb_dn_new_fmt(tmp_ctx, sysdb->ldb,
+                             SYSDB_TMPL_USER_BASE, domain);
+    if (!base_dn) {
+        talloc_free(tmp_ctx);
+        return ENOMEM;
+    }
+
+    lret = ldb_transaction_start(sysdb->ldb);
+    if (lret != LDB_SUCCESS) {
+        DEBUG(1, ("Failed ldb transaction start !? (%d)\n", lret));
+        ret = EIO;
+        goto done;
+    }
+
+    lret = ldb_search(sysdb->ldb, tmp_ctx, &res, base_dn,
+                      LDB_SCOPE_BASE, attrs,
+                      SYSDB_PWUID_FILTER,
+                      (unsigned long)uid);
+    if (lret != LDB_SUCCESS) {
+        DEBUG(1, ("Failed to make search request: %s(%d)[%s]\n",
+                  ldb_strerror(lret), lret, ldb_errstring(sysdb->ldb)));
+        ret = EIO;
+        goto done;
+    }
+
+    if (res->count == 0) {
+        ret = EOK;
+        goto done;
+    }
+    if (res->count > 1) {
+        DEBUG(0, ("Cache DB corrupted, base search returned %d results\n",
+                  res->count));
+        ret = EOK;
+        goto done;
+    }
+
+    account_dn = ldb_dn_copy(tmp_ctx, res->msgs[0]->dn);
+    if (!account_dn) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    talloc_free(res);
+    res = NULL;
+
+    ret = ldb_delete(sysdb->ldb, account_dn);
+
+    if (ret != LDB_SUCCESS) {
+        DEBUG(2, ("LDB Error: %s(%d)\nError Message: [%s]\n",
+              ldb_strerror(ret), ret, ldb_errstring(sysdb->ldb)));
+        ret = EIO;
+        goto done;
+    }
+
+    lret = ldb_transaction_commit(sysdb->ldb);
+    if (lret != LDB_SUCCESS) {
+        DEBUG(1, ("Failed ldb transaction commit !! (%d)\n", lret));
+        ret = EIO;
+        goto done;
+    }
+
+    ret = EOK;
+
+done:
+    if (ret != EOK) {
+        lret = ldb_transaction_cancel(sysdb->ldb);
+        if (lret != LDB_SUCCESS) {
+            DEBUG(1, ("Failed to cancel ldb transaction (%d)\n", lret));
+        }
+    }
+
+    talloc_free(tmp_ctx);
+    return ret;
+}
+
+int sysdb_init(TALLOC_CTX *mem_ctx,
+               struct event_context *ev,
+               struct confdb_ctx *cdb,
+               struct sysdb_ctx **dbctx)
+{
+    struct sysdb_ctx *ctx;
+    int ret;
+
+    ret = sysdb_read_conf(mem_ctx, cdb, &ctx);
+    if (ret != EOK)
+        return ret;
+
+    ctx->ldb = ldb_init(mem_ctx, ev);
+    if (!ctx->ldb) {
+        talloc_free(ctx);
+        return EIO;
+    }
+
+    ret = ldb_connect(ctx->ldb, ctx->ldb_file, 0, NULL);
+    if (ret != LDB_SUCCESS) {
+        talloc_free(ctx);
+        return EIO;
+    }
+
+    *dbctx = ctx;
+
+    return EOK;
+}
diff --git a/server/db/sysdb.h b/server/db/sysdb.h
new file mode 100644
index 000000000..5b7875961
--- /dev/null
+++ b/server/db/sysdb.h
@@ -0,0 +1,148 @@
+/*
+   SSSD
+
+   System Databse Header
+
+   Copyright (C) Simo Sorce <ssorce@redhat.com>	2008
+
+   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 __SYS_DB_H__
+#define __SYS_DB_H__
+
+#include "ldb.h"
+#include "ldb_errors.h"
+
+#define SYSDB_CONF_SECTION "config/sysdb"
+#define SYSDB_FILE "sssd.ldb"
+
+#define SYSDB_BASE "cn=sysdb"
+#define SYSDB_TMPL_USER_BASE "cn=users,cn=%s,"SYSDB_BASE
+#define SYSDB_TMPL_GROUP_BASE "cn=groups,cn=%s,"SYSDB_BASE
+
+#define SYSDB_PWNAM_FILTER "(&(objectclass=user)(uid=%s))"
+#define SYSDB_PWUID_FILTER "(&(objectclass=user)(uidNumber=%lu))"
+#define SYSDB_PWENT_FILTER "(objectclass=user)"
+
+#define SYSDB_GRNAM_FILTER "(&(objectclass=group)(cn=%s))"
+#define SYSDB_GRNA2_FILTER "(&(objectclass=user)(memberof=%s))"
+#define SYSDB_GRGID_FILTER "(&(objectclass=group)(gidNumber=%lu))"
+#define SYSDB_GRENT_FILTER "(objectclass=group)"
+
+#define SYSDB_INITGR_FILTER "(&(objectclass=group)(gidNumber=*))"
+
+#define SYSDB_PW_NAME "uid"
+#define SYSDB_PW_PWD "userPassword"
+#define SYSDB_PW_UIDNUM "uidNumber"
+#define SYSDB_PW_GIDNUM "gidNumber"
+#define SYSDB_PW_FULLNAME "fullName"
+#define SYSDB_PW_HOMEDIR "homeDirectory"
+#define SYSDB_PW_SHELL "loginShell"
+
+#define SYSDB_GR_NAME "cn"
+#define SYSDB_GR_GIDNUM "gidNumber"
+#define SYSDB_GR_MEMBER "member"
+
+#define SYSDB_LAST_UPDATE "lastUpdate"
+
+#define SYSDB_PW_ATTRS {SYSDB_PW_NAME, SYSDB_PW_UIDNUM, \
+                        SYSDB_PW_GIDNUM, SYSDB_PW_FULLNAME, \
+                        SYSDB_PW_HOMEDIR, SYSDB_PW_SHELL, \
+                        SYSDB_LAST_UPDATE, \
+                        NULL}
+#define SYSDB_GRNAM_ATTRS {SYSDB_GR_NAME, SYSDB_GR_GIDNUM, \
+                           SYSDB_LAST_UPDATE, \
+                           NULL}
+#define SYSDB_GRPW_ATTRS {SYSDB_PW_NAME, SYSDB_LAST_UPDATE, \
+                          NULL}
+
+#define SYSDB_INITGR_ATTR "memberof"
+#define SYSDB_INITGR_ATTRS {SYSDB_GR_GIDNUM, SYSDB_LAST_UPDATE, \
+                            NULL}
+
+struct sysdb_ctx {
+    struct ldb_context *ldb;
+    const char *ldb_file;
+};
+
+struct confdb_ctx;
+
+typedef void (*sysdb_callback_t)(void *, int, struct ldb_result *);
+
+int sysdb_init(TALLOC_CTX *mem_ctx,
+               struct event_context *ev,
+               struct confdb_ctx *cdb,
+               struct sysdb_ctx **nlctx);
+
+int sysdb_getpwnam(TALLOC_CTX *mem_ctx,
+                   struct event_context *ev,
+                   struct sysdb_ctx *ctx,
+                   const char *domain,
+                   const char *name,
+                   sysdb_callback_t fn, void *ptr);
+
+int sysdb_getpwuid(TALLOC_CTX *mem_ctx,
+                   struct event_context *ev,
+                   struct sysdb_ctx *ctx,
+                   const char *domain,
+                   uint64_t uid,
+                   sysdb_callback_t fn, void *ptr);
+
+int sysdb_enumpwent(TALLOC_CTX *mem_ctx,
+                    struct event_context *ev,
+                    struct sysdb_ctx *ctx,
+                    sysdb_callback_t fn, void *ptr);
+
+int sysdb_getgrnam(TALLOC_CTX *mem_ctx,
+                   struct event_context *ev,
+                   struct sysdb_ctx *ctx,
+                   const char *domain,
+                   const char *name,
+                   sysdb_callback_t fn, void *ptr);
+
+int sysdb_getgrgid(TALLOC_CTX *mem_ctx,
+                   struct event_context *ev,
+                   struct sysdb_ctx *ctx,
+                   const char *domain,
+                   uint64_t gid,
+                   sysdb_callback_t fn, void *ptr);
+
+int sysdb_enumgrent(TALLOC_CTX *mem_ctx,
+                    struct event_context *ev,
+                    struct sysdb_ctx *ctx,
+                    sysdb_callback_t fn, void *ptr);
+
+int sysdb_initgroups(TALLOC_CTX *mem_ctx,
+                     struct event_context *ev,
+                     struct sysdb_ctx *ctx,
+                     const char *domain,
+                     const char *name,
+                     sysdb_callback_t fn, void *ptr);
+
+int sysdb_store_account_posix(TALLOC_CTX *memctx,
+                              struct sysdb_ctx *sysdb,
+                              const char *domain,
+                              char *name, char *pwd,
+                              uint64_t uid, uint64_t gid,
+                              char *gecos, char *homedir, char *shell);
+
+int sysdb_remove_account_posix(TALLOC_CTX *memctx,
+                               struct sysdb_ctx *sysdb,
+                               const char *domain, const char *name);
+
+int sysdb_remove_account_posix_by_uid(TALLOC_CTX *memctx,
+                                      struct sysdb_ctx *sysdb,
+                                      const char *domain, uid_t uid);
+#endif /* __SYS_DB_H__ */