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This reflects that the event context is also used outside of the server processes. The command used for the rename: find . -name '*.[hc]' -print0 | xargs -0 sed -i 's/server_event_context/global_event_context/' Signed-off-by: Christof Schmitt <cs@samba.org> Reviewed-by: Ralph Boehme <slow@samba.org>
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/*
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* Unix SMB/CIFS implementation.
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* Group Policy Update event for winbindd
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* Copyright (C) David Mulder 2017
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "param/param.h"
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#include "param/loadparm.h"
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#include "winbindd.h"
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/*
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* gpupdate_interval()
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* return Random integer between 5400 and 7200, the group policy update
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* interval in seconds
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*
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* Group Policy should be updated every 90 minutes in the background,
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* with a random offset between 0 and 30 minutes. This ensures mutiple
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* clients will not update at the same time.
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*/
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#define GPUPDATE_INTERVAL (90*60)
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#define GPUPDATE_RAND_OFFSET (30*60)
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static uint32_t gpupdate_interval(void)
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{
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int rand_int_offset = generate_random() % GPUPDATE_RAND_OFFSET;
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return GPUPDATE_INTERVAL+rand_int_offset;
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}
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struct gpupdate_state {
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TALLOC_CTX *ctx;
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struct loadparm_context *lp_ctx;
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};
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static void gpupdate_callback(struct tevent_context *ev,
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struct tevent_timer *tim,
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struct timeval current_time,
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void *private_data)
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{
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struct tevent_timer *time_event;
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struct timeval schedule;
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struct tevent_req *req = NULL;
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struct gpupdate_state *data =
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talloc_get_type_abort(private_data, struct gpupdate_state);
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const char *const *gpupdate_cmd =
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lpcfg_gpo_update_command(data->lp_ctx);
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const char *smbconf = lp_default_path();
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/* Execute gpupdate */
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req = samba_runcmd_send(data->ctx, ev, timeval_zero(), 2, 0,
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gpupdate_cmd,
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"-s",
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smbconf,
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"--target=Computer",
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"--machine-pass",
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NULL);
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if (req == NULL) {
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DEBUG(0, ("Failed to execute the gpupdate command\n"));
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return;
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}
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/* Schedule the next event */
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schedule = tevent_timeval_current_ofs(gpupdate_interval(), 0);
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time_event = tevent_add_timer(ev, data->ctx, schedule,
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gpupdate_callback, data);
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if (time_event == NULL) {
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DEBUG(0, ("Failed scheduling the next gpupdate event\n"));
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}
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}
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void gpupdate_init(void)
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{
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struct tevent_timer *time_event;
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struct timeval schedule;
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TALLOC_CTX * ctx = talloc_new(global_event_context());
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struct gpupdate_state *data = talloc(ctx, struct gpupdate_state);
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struct loadparm_context *lp_ctx =
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loadparm_init_s3(NULL, loadparm_s3_helpers());
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/*
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* Check if gpupdate is enabled for winbind, if not
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* return without scheduling any events.
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*/
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if (!lpcfg_apply_group_policies(lp_ctx)) {
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return;
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}
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/*
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* Execute the first event immediately, future events
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* will execute on the gpupdate interval, which is every
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* 90 to 120 minutes (at random).
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*/
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schedule = tevent_timeval_current_ofs(0, 0);
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data->ctx = ctx;
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data->lp_ctx = lp_ctx;
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if (data->lp_ctx == NULL) {
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smb_panic("Could not load smb.conf\n");
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}
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time_event = tevent_add_timer(global_event_context(), data->ctx,
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schedule, gpupdate_callback, data);
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if (time_event == NULL) {
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DEBUG(0, ("Failed scheduling the gpupdate event\n"));
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}
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}
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