/***************************************************************************
load automatic printer services
***************************************************************************/
void load_printers(void)
{
if (!pcap_cache_loaded())
pcap_cache_reload();
add_auto_printers();
/* load all printcap printers */
if (lp_load_printers() && lp_servicenumber(PRINTERS_NAME) >= 0)
pcap_printer_fn(lp_add_one_printer, NULL);
}
void printing_subsystem_update(struct tevent_context *ev_ctx,
struct messaging_context *msg_ctx,
bool force)
{
if (background_lpq_updater_pid != -1) {
if (pcap_cache_loaded()) {
load_printers(ev_ctx, msg_ctx);
}
if (force) {
/* Send a sighup to the background process.
* this will force it to reload printers */
kill(background_lpq_updater_pid, SIGHUP);
}
return;
}
pcap_cache_reload(ev_ctx, msg_ctx, &delete_and_reload_printers);
}
/**
* @brief Purge stale printer shares and reload from pre-populated pcap cache.
*
* This function should normally only be called as a callback on a successful
* pcap_cache_reload(), or on client enumeration.
*
* @param[in] ev The event context.
*
* @param[in] msg_ctx The messaging context.
*/
void delete_and_reload_printers(struct tevent_context *ev,
struct messaging_context *msg_ctx)
{
int n_services;
int pnum;
int snum;
const char *pname;
bool ok;
time_t pcap_last_update;
TALLOC_CTX *frame = talloc_stackframe();
ok = pcap_cache_loaded(&pcap_last_update);
if (!ok) {
DEBUG(1, ("pcap cache not loaded\n"));
talloc_free(frame);
return;
}
if (reload_last_pcap_time == pcap_last_update) {
DEBUG(5, ("skipping printer reload, already up to date.\n"));
talloc_free(frame);
return;
}
reload_last_pcap_time = pcap_last_update;
/* Get pcap printers updated */
load_printers(ev, msg_ctx);
n_services = lp_numservices();
pnum = lp_servicenumber(PRINTERS_NAME);
DEBUG(10, ("reloading printer services from pcap cache\n"));
/*
* Add default config for printers added to smb.conf file and remove
* stale printers
*/
for (snum = 0; snum < n_services; snum++) {
/* avoid removing PRINTERS_NAME */
if (snum == pnum) {
continue;
}
/* skip no-printer services */
if (!snum_is_shared_printer(snum)) {
continue;
}
pname = lp_printername(frame, snum);
/* check printer, but avoid removing non-autoloaded printers */
if (lp_autoloaded(snum) && !pcap_printername_ok(pname)) {
lp_killservice(snum);
}
}
/* Make sure deleted printers are gone */
load_printers(ev, msg_ctx);
talloc_free(frame);
}
static bool spoolss_child_init(struct tevent_context *ev_ctx,
int child_id, struct pf_worker_data *pf)
{
NTSTATUS status;
struct rpc_srv_callbacks spoolss_cb;
struct messaging_context *msg_ctx = messaging_init(NULL, ev_ctx);
bool ok;
status = reinit_after_fork(msg_ctx, ev_ctx,
true);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("reinit_after_fork() failed\n"));
smb_panic("reinit_after_fork() failed");
}
prctl_set_comment("spoolssd-child");
spoolss_child_id = child_id;
spoolss_reopen_logs(child_id);
ok = spoolss_setup_chld_hup_handler(ev_ctx, msg_ctx, pf);
if (!ok) {
return false;
}
if (!serverid_register(messaging_server_id(msg_ctx),
FLAG_MSG_GENERAL |
FLAG_MSG_PRINT_GENERAL)) {
return false;
}
if (!locking_init()) {
return false;
}
messaging_register(msg_ctx, ev_ctx,
MSG_SMB_CONF_UPDATED, smb_conf_updated);
messaging_register(msg_ctx, ev_ctx,
MSG_PREFORK_PARENT_EVENT, parent_ping);
/* As soon as messaging is up check if pcap has been loaded already.
* If so then we probably missed a message and should load_printers()
* ourselves. If pcap has not been loaded yet, then ignore, we will get
* a message as soon as the bq process completes the reload. */
if (pcap_cache_loaded(NULL)) {
load_printers(ev_ctx, msg_ctx);
}
/* try to reinit rpc queues */
spoolss_cb.init = spoolss_init_cb;
spoolss_cb.shutdown = spoolss_shutdown_cb;
spoolss_cb.private_data = msg_ctx;
status = rpc_winreg_init(NULL);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to register winreg rpc inteface! (%s)\n",
nt_errstr(status)));
return false;
}
status = rpc_spoolss_init(&spoolss_cb);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to register spoolss rpc inteface! (%s)\n",
nt_errstr(status)));
return false;
}
return true;
}
