Add more infrastructure to data provider to dispatch requests (still untested).

Add helper functions to connect to the data provider.
Add some plumbing to the ldap provider (still untested).

1 files changed, 364 insertions, 0 deletions

diff --git a/server/providers/dp_backend_store.c b/server/providers/dp_backend_store.c
new file mode 100644
index 000000000..e518f4387
--- /dev/null
+++ b/server/providers/dp_backend_store.c
@@ -0,0 +1,364 @@
+/*
+   SSSD
+
+   Data Provider Backend Storage helper funcitons
+
+   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 <errno.h>
+#include "ldb.h"
+#include "ldb_errors.h"
+#include "util/util.h"
+#include "providers/dp_backend.h"
+#include <time.h>
+
+int dp_be_store_account_posix(struct be_ctx *ctx,
+                              char *name, char *pwd,
+                              uint64_t uid, uint64_t gid,
+                              char *gecos, char *homedir, char *shell)
+{
+    TALLOC_CTX *tmp_ctx;
+    const char *attrs[] = { "uid", 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(ctx);
+    if (!tmp_ctx) {
+        return ENOMEM;
+    }
+
+    account_dn = ldb_dn_new_fmt(tmp_ctx, ctx->ldb,
+                                "uid=%s,cn=users,cn=%s,cn=remote",
+                                name, ctx->domain);
+    if (!account_dn) {
+        talloc_free(tmp_ctx);
+        return ENOMEM;
+    }
+
+    lret = ldb_transaction_start(ctx->ldb);
+    if (lret != LDB_SUCCESS) {
+        DEBUG(1, ("Failed ldb transaction start !? (%d)\n", lret));
+        ret = EIO;
+        goto done;
+    }
+
+	res = talloc_zero(tmp_ctx, struct ldb_result);
+	if (!res) {
+        ret = ENOMEM;
+        goto done;
+	}
+
+    lret = ldb_build_search_req(&req, ctx->ldb, tmp_ctx,
+                                account_dn, LDB_SCOPE_BASE,
+                                "(objectClass=User)", attrs, NULL,
+                                res, ldb_search_default_callback, NULL);
+    if (!lret) {
+        DEBUG(1, ("Failed to build search request (%d) !?\n", lret));
+        ret = EIO;
+        goto done;
+    }
+
+    lret = ldb_request(ctx->ldb, req);
+    if (lret == LDB_SUCCESS) {
+        lret = ldb_wait(req->handle, LDB_WAIT_ALL);
+    }
+    if (lret != LDB_SUCCESS) {
+        DEBUG(1, ("Failed to make search request: %s(%d)[%s]\n",
+                  ldb_strerror(lret), lret, ldb_errstring(ctx->ldb)));
+        ret = EIO;
+        goto done;
+    }
+
+    talloc_free(req);
+    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, "uid", flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, "uid", 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, "userPassword", flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, "userPassword", pwd);
+        }
+    } else {
+        lret = ldb_msg_add_empty(msg, "userPassword",
+                                 LDB_FLAG_MOD_DELETE, NULL);
+    }
+    if (lret != LDB_SUCCESS) {
+        ret = errno;
+        goto done;
+    }
+
+    /* uid */
+    if (uid) {
+        lret = ldb_msg_add_empty(msg, "uidNumber", flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_fmt(msg, "uidNumber",
+                                   "%lu", (long unsigned)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, "gidNumber", flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_fmt(msg, "gidNumber",
+                                   "%lu", (long unsigned)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, "fullName", flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, "fullName", gecos);
+        }
+    } else {
+        lret = ldb_msg_add_empty(msg, "fullName",
+                                 LDB_FLAG_MOD_DELETE, NULL);
+    }
+    if (lret != LDB_SUCCESS) {
+        ret = errno;
+        goto done;
+    }
+
+    /* homedir */
+    if (homedir && *homedir) {
+        lret = ldb_msg_add_empty(msg, "homeDirectory", flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, "homeDirectory", homedir);
+        }
+    } else {
+        lret = ldb_msg_add_empty(msg, "homeDirectory",
+                                 LDB_FLAG_MOD_DELETE, NULL);
+    }
+    if (lret != LDB_SUCCESS) {
+        ret = errno;
+        goto done;
+    }
+
+    /* shell */
+    if (shell && *shell) {
+        lret = ldb_msg_add_empty(msg, "loginShell", flags, NULL);
+        if (lret == LDB_SUCCESS) {
+            lret = ldb_msg_add_string(msg, "loginShell", shell);
+        }
+    } else {
+        lret = ldb_msg_add_empty(msg, "loginShell",
+                                 LDB_FLAG_MOD_DELETE, NULL);
+    }
+    if (lret != LDB_SUCCESS) {
+        ret = errno;
+        goto done;
+    }
+
+    /* modification time */
+    lret = ldb_msg_add_empty(msg, "lastUpdate", flags, NULL);
+    if (lret == LDB_SUCCESS) {
+        lret = ldb_msg_add_fmt(msg, "lastUpdate",
+                               "%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, ctx->ldb, tmp_ctx, msg, NULL,
+                                 NULL, ldb_op_default_callback, NULL);
+    } else {
+        lret = ldb_build_mod_req(&req, ctx->ldb, tmp_ctx, msg, NULL,
+                                 NULL, ldb_op_default_callback, NULL);
+    }
+    if (lret == LDB_SUCCESS) {
+        lret = ldb_request(ctx->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(ctx->ldb)));
+        ret = EIO;
+        goto done;
+    }
+
+    lret = ldb_transaction_commit(ctx->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(ctx->ldb);
+        if (lret != LDB_SUCCESS) {
+            DEBUG(1, ("Failed to cancel ldb transaction (%d)\n", lret));
+        }
+    }
+
+    talloc_free(tmp_ctx);
+    return ret;
+}
+
+int dp_be_remove_account_posix(struct be_ctx *ctx, char *name)
+{
+    TALLOC_CTX *tmp_ctx;
+    struct ldb_dn *account_dn;
+    int ret;
+
+    tmp_ctx = talloc_new(ctx);
+    if (!tmp_ctx) {
+        return ENOMEM;
+    }
+
+    account_dn = ldb_dn_new_fmt(tmp_ctx, ctx->ldb,
+                                "uid=%s,cn=users,cn=%s,cn=remote",
+                                name, ctx->domain);
+    if (!account_dn) {
+        talloc_free(tmp_ctx);
+        return ENOMEM;
+    }
+
+    ret = ldb_delete(ctx->ldb, account_dn);
+
+    if (ret != LDB_SUCCESS) {
+        DEBUG(2, ("LDB Error: %s(%d)\nError Message: [%s]\n",
+              ldb_strerror(ret), ret, ldb_errstring(ctx->ldb)));
+        ret = EIO;
+    }
+
+    talloc_free(tmp_ctx);
+    return ret;
+}
+
+/* TODO: Unify with nss_ldb and provide a single cachedb interface */
+
+int dp_be_cachedb_init(struct be_ctx *ctx)
+{
+    TALLOC_CTX *tmp_ctx;
+    char *ldb_file;
+    char *default_db_file;
+    int ret;
+
+    tmp_ctx = talloc_new(ctx);
+    if (!tmp_ctx) {
+        return ENOMEM;
+    }
+
+    default_db_file = talloc_asprintf(tmp_ctx, "%s/%s", DB_PATH, DATA_PROVIDER_DB_FILE);
+    if (!default_db_file) {
+        talloc_free(tmp_ctx);
+        return ENOMEM;
+    }
+
+    ret = confdb_get_string(ctx->cdb, tmp_ctx,
+                            DATA_PROVIDER_DB_CONF_SEC, "ldbFile",
+                            default_db_file, &ldb_file);
+    if (ret != EOK) {
+        talloc_free(tmp_ctx);
+        return ret;
+    }
+
+    ctx->ldb = ldb_init(tmp_ctx, ctx->ev);
+    if (!ctx->ldb) {
+        talloc_free(tmp_ctx);
+        return EIO;
+    }
+
+    ret = ldb_connect(ctx->ldb, ldb_file, 0, NULL);
+    if (ret != LDB_SUCCESS) {
+        talloc_free(tmp_ctx);
+        return EIO;
+    }
+
+    talloc_steal(ctx, ctx->ldb);
+
+    talloc_free(tmp_ctx);
+    return EOK;
+}
+