The code now successfully sends a getpwnam request to a remote LDAP server,

and caches the result in LDAP.
Still chasing a bug that does not let NSS known that the BE was successful.
This makes NSS timeout the client and not return any results yet.

1 files changed, 231 insertions, 0 deletions

diff --git a/server/nss/nsssrv_dp.c b/server/nss/nsssrv_dp.c
new file mode 100644
index 000000000..f865e62b0
--- /dev/null
+++ b/server/nss/nsssrv_dp.c
@@ -0,0 +1,231 @@
+/*
+   SSSD
+
+   NSS Responder - Data Provider Interfaces
+
+   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 "nss/nsssrv.h"
+#include "providers/data_provider.h"
+
+int nss_dp_send_acct_req(struct nss_ctx *nctx, TALLOC_CTX *memctx,
+                         DBusPendingCallNotifyFunction callback,
+                         void *callback_ctx,
+                         const char *domain, int type,
+                         const char *opt_name, uint32_t opt_id)
+{
+    DBusMessage *msg;
+    DBusPendingCall *pending_reply;
+    DBusConnection *conn;
+    DBusError dbus_error;
+    dbus_bool_t ret;
+    uint32_t be_type;
+    const char *attrs = "core";
+    char *filter;
+
+    /* either, or, not both */
+    if (opt_name && opt_id) {
+        return EINVAL;
+    }
+
+    switch (type) {
+    case NSS_DP_USER:
+        be_type = BE_REQ_USER;
+        break;
+    case NSS_DP_GROUP:
+        be_type = BE_REQ_GROUP;
+        break;
+    default:
+        return EINVAL;
+    }
+
+    if (opt_name) {
+        filter = talloc_asprintf(memctx, "name=%s", opt_name);
+    } else if (opt_id) {
+        filter = talloc_asprintf(memctx, "idnumber=%u", opt_id);
+    } else {
+        filter = talloc_strdup(memctx, "name=*");
+    }
+    if (!filter) {
+        talloc_free(nctx);
+        return ENOMEM;
+    }
+
+    conn = sbus_get_connection(nctx->dp_ctx->scon_ctx);
+    dbus_error_init(&dbus_error);
+
+    /* create the message */
+    msg = dbus_message_new_method_call(NULL,
+                                       DP_CLI_PATH,
+                                       DP_CLI_INTERFACE,
+                                       DP_SRV_METHOD_GETACCTINFO);
+    if (msg == NULL) {
+        DEBUG(0,("Out of memory?!\n"));
+        return ENOMEM;
+    }
+
+    DEBUG(4, ("Sending request for [%s][%u][%s][%s]\n",
+              domain, be_type, attrs, filter));
+
+    ret = dbus_message_append_args(msg,
+                                   DBUS_TYPE_STRING, &domain,
+                                   DBUS_TYPE_UINT32, &be_type,
+                                   DBUS_TYPE_STRING, &attrs,
+                                   DBUS_TYPE_STRING, &filter,
+                                   DBUS_TYPE_INVALID);
+    if (!ret) {
+        DEBUG(1,("Failed to build message\n"));
+        return EIO;
+    }
+
+    ret = dbus_connection_send_with_reply(conn, msg, &pending_reply,
+                                            600000 /* TODO: set timeout */);
+    if (!ret) {
+        /*
+         * Critical Failure
+         * We can't communicate on this connection
+         * We'll drop it using the default destructor.
+         */
+        DEBUG(0, ("D-BUS send failed.\n"));
+        dbus_message_unref(msg);
+        return EIO;
+    }
+
+    /* Set up the reply handler */
+    dbus_pending_call_set_notify(pending_reply, callback, callback_ctx, NULL);
+    dbus_message_unref(msg);
+
+    return EOK;
+}
+
+int nss_dp_get_reply(DBusPendingCall *pending,
+                     dbus_uint16_t *err_maj,
+                     dbus_uint32_t *err_min,
+                     char **err_msg)
+{
+    DBusMessage *reply;
+    DBusError dbus_error;
+    dbus_bool_t ret;
+    int type;
+    int err = EOK;
+
+    dbus_error_init(&dbus_error);
+
+    reply = dbus_pending_call_steal_reply(pending);
+    if (!reply) {
+        /* reply should never be null. This function shouldn't be called
+         * until reply is valid or timeout has occurred. If reply is NULL
+         * here, something is seriously wrong and we should bail out.
+         */
+        DEBUG(0, ("Severe error. A reply callback was called but no reply was received and no timeout occurred\n"));
+
+        /* FIXME: Destroy this connection ? */
+        err = EIO;
+        goto done;
+    }
+
+    type = dbus_message_get_type(reply);
+    switch (type) {
+    case DBUS_MESSAGE_TYPE_METHOD_RETURN:
+        ret = dbus_message_get_args(reply, &dbus_error,
+                                    DBUS_TYPE_UINT16, err_maj,
+                                    DBUS_TYPE_UINT32, err_min,
+                                    DBUS_TYPE_STRING, err_msg,
+                                    DBUS_TYPE_INVALID);
+        if (!ret) {
+            DEBUG(1,("Filed to parse message\n"));
+            /* FIXME: Destroy this connection ? */
+            err = EIO;
+            goto done;
+        }
+
+        break;
+
+    case DBUS_MESSAGE_TYPE_ERROR:
+        DEBUG(0,("The Data Provider returned an error [%s]\n",
+                 dbus_message_get_error_name(reply)));
+        /* Falling through to default intentionally*/
+    default:
+        /*
+         * Timeout or other error occurred or something
+         * unexpected happened.
+         * It doesn't matter which, because either way we
+         * know that this connection isn't trustworthy.
+         * We'll destroy it now.
+         */
+
+        /* FIXME: Destroy this connection ? */
+        err = EIO;
+    }
+
+done:
+    dbus_pending_call_unref(pending);
+    dbus_message_unref(reply);
+
+    return err;
+}
+
+static int nss_dp_identity(DBusMessage *message, void *data, DBusMessage **r)
+{
+    dbus_uint16_t version = DATA_PROVIDER_VERSION;
+    dbus_uint16_t clitype = DP_CLI_FRONTEND;
+    const char *cliname = "NSS";
+    const char *nullname = "";
+    DBusMessage *reply;
+    dbus_bool_t ret;
+
+    DEBUG(4,("Sending ID reply: (%d,%d,%s)\n",
+             clitype, version, cliname));
+
+    reply = dbus_message_new_method_return(message);
+    ret = dbus_message_append_args(reply,
+                                   DBUS_TYPE_UINT16, &clitype,
+                                   DBUS_TYPE_UINT16, &version,
+                                   DBUS_TYPE_STRING, &cliname,
+                                   DBUS_TYPE_STRING, &nullname,
+                                   DBUS_TYPE_INVALID);
+    if (!ret) {
+        return EIO;
+    }
+
+    *r = reply;
+    return EOK;
+}
+
+struct sbus_method nss_dp_methods[] = {
+    { DP_CLI_METHOD_IDENTITY, nss_dp_identity },
+    { NULL, NULL }
+};
+
+int nss_dp_init(struct nss_ctx *nctx)
+{
+    int ret;
+
+    /* Set up SBUS connection to the data provider */
+    ret = dp_sbus_cli_init(nctx, nctx->ev, nctx->cdb,
+                           nss_dp_methods, &nctx->dp_ctx);
+    if (ret != EOK) {
+        return ret;
+    }
+
+    /* attach context to the connection */
+    sbus_conn_set_private_data(nctx->dp_ctx->scon_ctx, nctx);
+
+    return EOK;
+}
+