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author	akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>	2007-10-14 02:14:16 +0000
committer	akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>	2007-10-14 02:14:16 +0000
commit	97cbd0dac489fb91e8188e065a7effc78d1cf17b (patch)
tree	75e5837cec7315e422b42106a9d3b95b3dae3820 /bin
parent	5e9a77420b32055a3ff5c9e2fecfb03e8ead6b51 (diff)
download	ruby-97cbd0dac489fb91e8188e065a7effc78d1cf17b.tar.gz ruby-97cbd0dac489fb91e8188e065a7effc78d1cf17b.tar.xz ruby-97cbd0dac489fb91e8188e065a7effc78d1cf17b.zip

* lib/pp.rb (PP::PPMethods#pp_hash): don't sort keys because hash is

ordered. (ENV.pretty_print): call pp_hash with sorted hash. git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@13696 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Diffstat (limited to 'bin')

0 files changed, 0 insertions, 0 deletions

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/*
    Authors:
        Simo Sorce <ssorce@redhat.com>
        Stephen Gallagher <sgallagh@redhat.com>

    Copyright (C) 2009 Red Hat

    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 <sys/time.h>
#include <dbus/dbus.h>

#include "util/util.h"
#include "sbus/sssd_dbus.h"
#include "sbus/sssd_dbus_private.h"
#include "sbus/sssd_dbus_meta.h"

/* Types */
struct dbus_ctx_list;

static DBusObjectPathVTable dbus_object_path_vtable =
    { NULL, sbus_message_handler, NULL, NULL, NULL, NULL };

struct sbus_interface_p {
    struct sbus_interface_p *prev, *next;
    struct sbus_connection *conn;
    struct sbus_interface *intf;
};

static bool path_in_interface_list(struct sbus_interface_p *list,
                                   const char *path);
static void sbus_unreg_object_paths(struct sbus_connection *conn);

static int sbus_auto_reconnect(struct sbus_connection *conn);

static void sbus_dispatch(struct tevent_context *ev,
                          struct tevent_timer *te,
                          struct timeval tv, void *data)
{
    struct tevent_timer *new_event;
    struct sbus_connection *conn;
    DBusConnection *dbus_conn;
    int ret;

    if (data == NULL) return;

    conn = talloc_get_type(data, struct sbus_connection);

    dbus_conn = conn->dbus.conn;
    DEBUG(SSSDBG_TRACE_ALL, "dbus conn: %p\n", dbus_conn);

    if (conn->retries > 0) {
        DEBUG(SSSDBG_TRACE_FUNC, "SBUS is reconnecting. Deferring.\n");
        /* Currently trying to reconnect, defer dispatch for 30ms */
        tv = tevent_timeval_current_ofs(0, 30);
        new_event = tevent_add_timer(ev, conn, tv, sbus_dispatch, conn);
        if (new_event == NULL) {
            DEBUG(SSSDBG_FATAL_FAILURE,"Could not defer dispatch!\n");
        }
        return;
    }

    if ((!dbus_connection_get_is_connected(dbus_conn)) &&
        (conn->max_retries != 0)) {
        /* Attempt to reconnect automatically */
        ret = sbus_auto_reconnect(conn);
        if (ret == EOK) {
            DEBUG(SSSDBG_CRIT_FAILURE, "Performing auto-reconnect\n");
            return;
        }

        DEBUG(SSSDBG_FATAL_FAILURE, "Cannot start auto-reconnection.\n");
        conn->reconnect_callback(conn,
                                 SBUS_RECONNECT_ERROR,
                                 conn->reconnect_pvt);
        return;
    }

    if ((conn->disconnect) ||
        (!dbus_connection_get_is_connected(dbus_conn))) {
        DEBUG(SSSDBG_MINOR_FAILURE,"Connection is not open for dispatching.\n");
        /*
         * Free the connection object.
         * This will invoke the destructor for the connection
         */
        talloc_free(conn);
        conn = NULL;
        return;
    }

    /* Dispatch only once each time through the mainloop to avoid
     * starving other features
     */
    ret = dbus_connection_get_dispatch_status(dbus_conn);
    if (ret != DBUS_DISPATCH_COMPLETE) {
        DEBUG(SSSDBG_TRACE_ALL,"Dispatching.\n");
        dbus_connection_dispatch(dbus_conn);
    }

    /* If other dispatches are waiting, queue up the dispatch function
     * for the next loop.
     */
    ret = dbus_connection_get_dispatch_status(dbus_conn);
    if (ret != DBUS_DISPATCH_COMPLETE) {
        new_event = tevent_add_timer(ev, conn, tv, sbus_dispatch, conn);
        if (new_event == NULL) {
            DEBUG(SSSDBG_OP_FAILURE,"Could not add dispatch event!\n");

            /* TODO: Calling exit here is bad */
            exit(1);
        }
    }
}

/* dbus_connection_wakeup_main
 * D-BUS makes a callback to the wakeup_main function when
 * it has data available for dispatching.
 * In order to avoid blocking, this function will create a now()
 * timed event to perform the dispatch during the next iteration
 * through the mainloop
 */
static void sbus_conn_wakeup_main(void *data)
{
    struct sbus_connection *conn;
    struct timeval tv;
    struct tevent_timer *te;

    conn = talloc_get_type(data, struct sbus_connection);

    tv = tevent_timeval_current();

    /* D-BUS calls this function when it is time to do a dispatch */
    te = tevent_add_timer(conn->ev, conn, tv, sbus_dispatch, conn);
    if (te == NULL) {
        DEBUG(SSSDBG_OP_FAILURE,"Could not add dispatch event!\n");
        /* TODO: Calling exit here is bad */
        exit(1);
    }
}

static int sbus_conn_set_fns(struct sbus_connection *conn);

/*
 * integrate_connection_with_event_loop
 * Set up a D-BUS connection to use the libevents mainloop
 * for handling file descriptor and timed events
 */
int sbus_init_connection(TALLOC_CTX *ctx,
                         struct tevent_context *ev,
                         DBusConnection *dbus_conn,
                         int connection_type,
                         struct sbus_connection **_conn)
{
    struct sbus_connection *conn;
    int ret;

    DEBUG(SSSDBG_TRACE_FUNC,"Adding connection %p\n", dbus_conn);
    conn = talloc_zero(ctx, struct sbus_connection);

    conn->ev = ev;
    conn->type = SBUS_CONNECTION;
    conn->dbus.conn = dbus_conn;
    conn->connection_type = connection_type;

    ret = sbus_conn_set_fns(conn);
    if (ret != EOK) {
        talloc_free(conn);
        return ret;
    }

    *_conn = conn;
    return ret;
}

static int sbus_conn_set_fns(struct sbus_connection *conn)
{
    dbus_bool_t dbret;

    /* Set up DBusWatch functions */
    dbret = dbus_connection_set_watch_functions(conn->dbus.conn,
                                                sbus_add_watch,
                                                sbus_remove_watch,
                                                sbus_toggle_watch,
                                                conn, NULL);
    if (!dbret) {
        DEBUG(SSSDBG_OP_FAILURE,
              "Error setting up D-BUS connection watch functions\n");
        return EIO;
    }

    /* Set up DBusTimeout functions */
    dbret = dbus_connection_set_timeout_functions(conn->dbus.conn,
                                                  sbus_add_timeout,
                                                  sbus_remove_timeout,
                                                  sbus_toggle_timeout,
                                                  conn, NULL);
    if (!dbret) {
        DEBUG(SSSDBG_OP_FAILURE,
              "Error setting up D-BUS server timeout functions\n");
        /* FIXME: free resources ? */
        return EIO;
    }

    /* Set up dispatch handler */
    dbus_connection_set_wakeup_main_function(conn->dbus.conn,
                                             sbus_conn_wakeup_main,
                                             conn, NULL);

    /* Set up any method_contexts passed in */

    /* Attempt to dispatch immediately in case of opportunistic
     * services connecting before the handlers were all up.
     * If there are no messages to be dispatched, this will do
     * nothing.
     */
    sbus_conn_wakeup_main(conn);

    return EOK;
}

int sbus_new_connection(TALLOC_CTX *ctx, struct tevent_context *ev,
                        const char *address, struct sbus_connection **_conn)
{
    struct sbus_connection *conn;
    DBusConnection *dbus_conn;
    DBusError dbus_error;
    int ret;

    dbus_error_init(&dbus_error);

    /* Open a shared D-BUS connection to the address */
    dbus_conn = dbus_connection_open(address, &dbus_error);
    if (!dbus_conn) {
        DEBUG(SSSDBG_CRIT_FAILURE,
              "Failed to open connection: name=%s, message=%s\n",
                dbus_error.name, dbus_error.message);
        if (dbus_error_is_set(&dbus_error)) dbus_error_free(&dbus_error);
        return EIO;
    }

    ret = sbus_init_connection(ctx, ev, dbus_conn, SBUS_CONN_TYPE_SHARED, &conn);
    if (ret != EOK) {
        /* FIXME: release resources */
    }

    /* Store the address for later reconnection */
    conn->address = talloc_strdup(conn, address);

    dbus_connection_set_exit_on_disconnect(conn->dbus.conn, FALSE);

    *_conn = conn;
    return ret;
}

static int connection_destructor(void *ctx)
{
    struct sbus_connection *conn;
    conn = talloc_get_type(ctx, struct sbus_connection);

    DEBUG(SSSDBG_TRACE_FUNC, "Invoking default destructor on connection %p\n",
              conn->dbus.conn);
    if (conn->connection_type == SBUS_CONN_TYPE_PRIVATE) {
        /* Private connections must be closed explicitly */
        dbus_connection_close(conn->dbus.conn);
    }
    else if (conn->connection_type == SBUS_CONN_TYPE_SHARED) {
        /* Shared connections are destroyed when their last reference is removed */
    }
    else {
        /* Critical Error! */
        DEBUG(SSSDBG_CRIT_FAILURE,
              "Critical Error, connection_type is neither shared nor private!\n");
        return -1;
    }

    /* Remove object path */
    /* TODO: Remove object paths */

    dbus_connection_unref(conn->dbus.conn);
    return 0;
}

/*
 * sbus_get_connection
 * Utility function to retreive the DBusConnection object
 * from a sbus_connection
 */
DBusConnection *sbus_get_connection(struct sbus_connection *conn)
{
    return conn->dbus.conn;
}

void sbus_disconnect (struct sbus_connection *conn)
{
    if (conn == NULL) {
        return;
    }

    DEBUG(SSSDBG_TRACE_FUNC, "Disconnecting %p\n", conn->dbus.conn);

    /*******************************
     *  Referencing conn->dbus.conn */
    dbus_connection_ref(conn->dbus.conn);

    conn->disconnect = 1;

    /* Unregister object paths */
    sbus_unreg_object_paths(conn);

    /* Disable watch functions */
    dbus_connection_set_watch_functions(conn->dbus.conn,
                                        NULL, NULL, NULL,
                                        NULL, NULL);
    /* Disable timeout functions */
    dbus_connection_set_timeout_functions(conn->dbus.conn,
                                          NULL, NULL, NULL,
                                          NULL, NULL);

    /* Disable dispatch status function */
    dbus_connection_set_dispatch_status_function(conn->dbus.conn,
                                                 NULL, NULL, NULL);

    /* Disable wakeup main function */
    dbus_connection_set_wakeup_main_function(conn->dbus.conn,
                                             NULL, NULL, NULL);

    /* Finalize the connection */
    connection_destructor(conn);

    dbus_connection_unref(conn->dbus.conn);
    /* Unreferenced conn->dbus_conn *
     ******************************/

    DEBUG(SSSDBG_TRACE_FUNC ,"Disconnected %p\n", conn->dbus.conn);
}

static int sbus_reply_internal_error(DBusMessage *message,
                                     struct sbus_connection *conn) {
    DBusMessage *reply = dbus_message_new_error(message, DBUS_ERROR_IO_ERROR,
                                                "Internal Error");
    if (reply) {
        sbus_conn_send_reply(conn, reply);
        dbus_message_unref(reply);
        return DBUS_HANDLER_RESULT_HANDLED;
    }
    return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}

/* Looks up a vtable func, in a struct derived from struct sbus_vtable */
#define VTABLE_FUNC(vtable, offset) \
    (*((void **)((char *)(vtable) + (offset))))

/* messsage_handler
 * Receive messages and process them
 */
DBusHandlerResult sbus_message_handler(DBusConnection *dbus_conn,
                                         DBusMessage *message,


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