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Diffstat (limited to 'server/providers/data_provider.c')
-rw-r--r--server/providers/data_provider.c356
1 files changed, 225 insertions, 131 deletions
diff --git a/server/providers/data_provider.c b/server/providers/data_provider.c
index bfc37a7c..181e865a 100644
--- a/server/providers/data_provider.c
+++ b/server/providers/data_provider.c
@@ -41,16 +41,57 @@
#include "data_provider.h"
#include "util/service_helpers.h"
-static int provide_identity(DBusMessage *message, void *data, DBusMessage **r);
-static int reply_ping(DBusMessage *message, void *data, DBusMessage **r);
+struct dp_backend;
+struct dp_frontend;
+
+struct dp_ctx {
+ struct event_context *ev;
+ struct confdb_ctx *cdb;
+ struct ldb_context *ldb;
+ struct service_sbus_ctx *ss_ctx;
+ struct dp_backend *be_list;
+ struct dp_frontend *fe_list;
+};
+
+struct dp_client {
+ struct dp_ctx *dpctx;
+ struct sbus_conn_ctx *conn_ctx;
+ const char *domain;
+};
+
+struct dp_backend {
+ struct dp_backend *prev;
+ struct dp_backend *next;
+ char *name;
+ char *domain;
+ struct dp_client *dpcli;
+};
+
+struct dp_frontend {
+ struct dp_frontend *prev;
+ struct dp_frontend *next;
+ char *name;
+ uint16_t flags;
+ struct dp_client *dpcli;
+};
+
+static int dp_backend_destructor(void *ctx);
+static int dp_frontend_destructor(void *ctx);
+
+static int service_identity(DBusMessage *message, void *data, DBusMessage **r);
+static int service_pong(DBusMessage *message, void *data, DBusMessage **r);
struct sbus_method mon_sbus_methods[] = {
- {SERVICE_METHOD_IDENTITY, provide_identity},
- {SERVICE_METHOD_PING, reply_ping},
+ {SERVICE_METHOD_IDENTITY, service_identity},
+ {SERVICE_METHOD_PING, service_pong},
{NULL, NULL}
};
-static int provide_identity(DBusMessage *message, void *data, DBusMessage **r)
+struct sbus_method dp_sbus_methods[] = {
+ {NULL, NULL}
+};
+
+static int service_identity(DBusMessage *message, void *data, DBusMessage **r)
{
dbus_uint16_t version = DATA_PROVIDER_VERSION;
const char *name = DATA_PROVIDER_SERVICE_NAME;
@@ -70,7 +111,7 @@ static int provide_identity(DBusMessage *message, void *data, DBusMessage **r)
return EOK;
}
-static int reply_ping(DBusMessage *message, void *data, DBusMessage **r)
+static int service_pong(DBusMessage *message, void *data, DBusMessage **r)
{
DBusMessage *reply;
dbus_bool_t ret;
@@ -91,8 +132,7 @@ static int dp_monitor_init(struct dp_ctx *dpctx)
/* Set up SBUS connection to the monitor */
ss_ctx = sssd_service_sbus_init(dpctx, dpctx->ev, dpctx->cdb,
- provide_identity,
- reply_ping);
+ mon_sbus_methods);
if (ss_ctx == NULL) {
DEBUG(0, ("Could not initialize D-BUS.\n"));
return ENOMEM;
@@ -150,19 +190,18 @@ static int dp_db_init(struct dp_ctx *dpctx)
return EOK;
}
-static int check_online(DBusMessage *message, void *data, DBusMessage **r);
-
-struct sbus_method dp_sbus_methods[] = {
- { DP_METHOD_CHECK_ONLINE, check_online },
- { NULL, NULL }
-};
+static void identity_check(DBusPendingCall *pending, void *data);
+static void online_check(DBusPendingCall *pending, void *data);
static int dbus_dp_init(struct sbus_conn_ctx *conn_ctx, void *data)
{
struct dp_ctx *dpctx;
struct dp_client *dpcli;
+ DBusMessage *msg;
+ DBusPendingCall *pending_reply;
DBusConnection *conn;
DBusError dbus_error;
+ dbus_bool_t dbret;
dpctx = talloc_get_type(data, struct dp_ctx);
conn = sbus_get_connection(conn_ctx);
@@ -178,15 +217,186 @@ static int dbus_dp_init(struct sbus_conn_ctx *conn_ctx, void *data)
return ENOMEM;
}
dpcli->dpctx = dpctx;
- dpcli->conn = conn;
+ dpcli->conn_ctx = conn_ctx;
/* Attach the client context to the connection context, so that it is
* always available when we need to manage the connection. */
sbus_conn_set_private_data(conn_ctx, dpcli);
+ /* identify the connecting client */
+ msg = dbus_message_new_method_call(NULL,
+ DP_CLI_PATH,
+ DP_CLI_INTERFACE,
+ DP_CLI_METHOD_IDENTITY);
+ if (msg == NULL) {
+ DEBUG(0,("Out of memory?!\n"));
+ talloc_free(conn_ctx);
+ return ENOMEM;
+ }
+ dbret = dbus_connection_send_with_reply(conn, msg, &pending_reply,
+ -1 /* TODO: set timeout */);
+ if (!dbret) {
+ /*
+ * Critical Failure
+ * We can't communicate on this connection
+ * We'll drop it using the default destructor.
+ */
+ DEBUG(0, ("D-BUS send failed.\n"));
+ talloc_free(conn_ctx);
+ return EIO;
+ }
+
+ /* Set up the reply handler */
+ dbus_pending_call_set_notify(pending_reply, identity_check, dpcli, NULL);
+ dbus_message_unref(msg);
+
return EOK;
}
+static void identity_check(DBusPendingCall *pending, void *data)
+{
+ struct dp_backend *dpbe;
+ struct dp_frontend *dpfe;
+ struct dp_client *dpcli;
+ DBusMessage *reply;
+ DBusConnection *conn;
+ DBusError dbus_error;
+ dbus_uint16_t cli_ver;
+ dbus_uint16_t cli_type;
+ char *cli_name;
+ char *cli_domain;
+ dbus_bool_t ret;
+ int type;
+
+ dpcli = talloc_get_type(data, struct dp_client);
+ conn = sbus_get_connection(dpcli->conn_ctx);
+ 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, ("Serious error. A reply callback was called but no reply was received and no timeout occurred\n"));
+
+ /* Destroy this connection */
+ sbus_disconnect(dpcli->conn_ctx);
+ return;
+ }
+
+ 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, &cli_type,
+ DBUS_TYPE_UINT16, &cli_ver,
+ DBUS_TYPE_STRING, &cli_name,
+ DBUS_TYPE_STRING, &cli_domain,
+ DBUS_TYPE_INVALID);
+ if (!ret) {
+ DEBUG(1,("Failed, to parse message, killing connection\n"));
+ sbus_disconnect(dpcli->conn_ctx);
+ return;
+ }
+
+ switch (cli_type && DP_CLI_TYPE_MASK) {
+ case DP_CLI_BACKEND:
+ dpbe = talloc_zero(dpcli->dpctx, struct dp_backend);
+ if (!dpbe) {
+ DEBUG(0, ("Out of memory!\n"));
+ sbus_disconnect(dpcli->conn_ctx);
+ return;
+ }
+
+ dpbe->name = talloc_strdup(dpbe, cli_name);
+ dpbe->domain = talloc_strdup(dpbe, cli_domain);
+ if (!dpbe->name || !dpbe->domain) {
+ DEBUG(0, ("Out of memory!\n"));
+ sbus_disconnect(dpcli->conn_ctx);
+ return;
+ }
+
+ dpbe->dpcli = dpcli;
+
+ DLIST_ADD(dpcli->dpctx->be_list, dpbe);
+
+ talloc_set_destructor((TALLOC_CTX *)dpbe, dp_backend_destructor);
+ break;
+
+ case DP_CLI_FRONTEND:
+ dpfe = talloc_zero(dpcli->dpctx, struct dp_frontend);
+ if (!dpfe) {
+ DEBUG(0, ("Out of memory!\n"));
+ sbus_disconnect(dpcli->conn_ctx);
+ return;
+ }
+
+ dpfe->name = talloc_strdup(dpfe, cli_name);
+ if (!dpfe->name) {
+ DEBUG(0, ("Out of memory!\n"));
+ sbus_disconnect(dpcli->conn_ctx);
+ return;
+ }
+
+ dpfe->dpcli = dpcli;
+
+ DLIST_ADD(dpcli->dpctx->fe_list, dpfe);
+
+ talloc_set_destructor((TALLOC_CTX *)dpfe, dp_frontend_destructor);
+ break;
+
+ default:
+ DEBUG(1, ("Unknown client type, killing connection\n"));
+ sbus_disconnect(dpcli->conn_ctx);
+ return;
+ }
+
+ /* Set up the destructor for this service */
+ break;
+
+ case DBUS_MESSAGE_TYPE_ERROR:
+ DEBUG(0,("getIdentity returned an error [%s], closing connection.\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.
+ */
+ sbus_disconnect(dpcli->conn_ctx);
+ return;
+ }
+}
+
+static void online_check(DBusPendingCall *pending, void *data)
+{
+ return;
+}
+
+static int dp_backend_destructor(void *ctx)
+{
+ struct dp_backend *dpbe = talloc_get_type(ctx, struct dp_backend);
+ if (dpbe->dpcli && dpbe->dpcli &&
+ dpbe->dpcli->dpctx && dpbe->dpcli->dpctx->be_list) {
+ DLIST_REMOVE(dpbe->dpcli->dpctx->be_list, dpbe);
+ }
+ return 0;
+}
+
+static int dp_frontend_destructor(void *ctx)
+{
+ struct dp_frontend *dpfe = talloc_get_type(ctx, struct dp_frontend);
+ if (dpfe->dpcli && dpfe->dpcli &&
+ dpfe->dpcli->dpctx && dpfe->dpcli->dpctx->fe_list) {
+ DLIST_REMOVE(dpfe->dpcli->dpctx->fe_list, dpfe);
+ }
+ return 0;
+}
+
/* monitor_dbus_init
* Set up the monitor service as a D-BUS Server */
static int dp_srv_init(struct dp_ctx *dpctx)
@@ -247,116 +457,6 @@ done:
return ret;
}
-static int check_online(DBusMessage *message, void *data, DBusMessage **r)
-{
- return EOK;
-}
-
-/* find list of backends */
-/* find library implementing them */
-/* dload() said library and set up a structure to hold pointers */
-
-static int init_data_providers(struct dp_ctx *dpctx)
-{
- TALLOC_CTX *tmp_ctx;
- struct dp_mod_ctx *module;
- char **doms;
- char *sec;
- char *mod_name;
- char *path;
- void *handle;
- char *mod_init_fn_name;
- sssm_init_fn_t mod_init_fn;
- int num_mods;
- int i, ret;
-
- tmp_ctx = talloc_new(dpctx);
- if (!tmp_ctx) {
- return ENOMEM;
- }
-
- ret = confdb_get_domains(dpctx->cdb, tmp_ctx, &doms);
- if (ret != EOK) {
- DEBUG(2, ("No domains configured!\n"));
- return ret;
- }
-
- num_mods = 0;
- for (i = 0; doms[i]; i++) {
- sec = talloc_asprintf(tmp_ctx, "config/domains/%s", doms[i]);
- if (!sec) {
- ret = ENOMEM;
- goto done;
- }
- ret = confdb_get_string(dpctx->cdb, tmp_ctx, sec,
- "provider", NULL, &mod_name);
- if (ret != EOK) {
- goto done;
- }
-
- /* the LOCAL domain does not have a backend at the moment */
- if (strcasecmp(mod_name, "LOCAL") == 0) {
- continue;
- }
-
- path = talloc_asprintf(tmp_ctx, "%s/libsss_%s.so",
- DATA_PROVIDER_PLUGINS_PATH, mod_name);
-
- handle = dlopen(path, RTLD_NOW);
- if (!handle) {
- DEBUG(0, ("Unable to load %s module with path (%s), error: %s\n",
- mod_name, path, dlerror()));
- ret = ELIBACC;
- goto done;
- }
-
- mod_init_fn_name = talloc_asprintf(tmp_ctx, "sssm_%s_init", mod_name);
- if (!mod_init_fn_name) {
- ret = ENOMEM;
- goto done;
- }
-
- mod_init_fn = (sssm_init_fn_t)dlsym(handle, mod_init_fn_name);
- if (!mod_init_fn) {
- DEBUG(0, ("Unable to load init fn from module %s, error: %s\n",
- mod_name, dlerror()));
- ret = ELIBBAD;
- goto done;
- }
-
- dpctx->modules = talloc_array(tmp_ctx, struct dp_mod_ctx *, num_mods +1);
- if (!dpctx->modules) {
- ret = ENOMEM;
- goto done;
- }
- module = talloc(dpctx->modules, struct dp_mod_ctx);
- if (!module) {
- ret = ENOMEM;
- goto done;
- }
- dpctx->modules[num_mods] = module;
-
- module->dp_ctx = dpctx;
- module->domain = talloc_strdup(dpctx->modules, doms[i]);
- module->name = talloc_steal(dpctx->modules, mod_name);
-
- ret = mod_init_fn(module);
- if (ret != EOK) {
- DEBUG(0, ("Error (%d) in module (%s) initialization!\n",
- ret, mod_name));
- continue;
- }
-
- num_mods++;
- }
-
- ret = EOK;
-
-done:
- talloc_free(doms);
- return ret;
-}
-
int dp_process_init(TALLOC_CTX *mem_ctx,
struct event_context *ev,
struct confdb_ctx *cdb)
@@ -390,12 +490,6 @@ int dp_process_init(TALLOC_CTX *mem_ctx,
return ret;
}
- ret = init_data_providers(dpctx);
- if (ret != EOK) {
- DEBUG(0, ("fatal error initializing data providers\n"));
- return ret;
- }
-
return EOK;
}