/**
* @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);
}
/**
* @brief Purge stale printers and reload from pre-populated pcap cache.
*
* This function should normally only be called as a callback on a successful
* pcap_cache_reload().
*
* This function can cause DELETION of printers and drivers from our registry,
* so calling it on a failed pcap reload may REMOVE permanently all printers
* and drivers.
*
* @param[in] ev The event context.
*
* @param[in] msg_ctx The messaging context.
*/
static void delete_and_reload_printers_full(struct tevent_context *ev,
struct messaging_context *msg_ctx)
{
struct auth_session_info *session_info = NULL;
struct spoolss_PrinterInfo2 *pinfo2 = NULL;
int n_services;
int pnum;
int snum;
const char *pname;
const char *sname;
NTSTATUS status;
n_services = lp_numservices();
pnum = lp_servicenumber(PRINTERS_NAME);
status = make_session_info_system(talloc_tos(), &session_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("reload_printers: "
"Could not create system session_info\n"));
/* can't remove stale printers before we
* are fully initilized */
return;
}
/*
* 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;
}
sname = lp_const_servicename(snum);
pname = lp_printername(session_info, snum);
/* check printer, but avoid removing non-autoloaded printers */
if (lp_autoloaded(snum) && !pcap_printername_ok(pname)) {
DEBUG(3, ("removing stale printer %s\n", pname));
if (is_printer_published(session_info, session_info,
msg_ctx,
NULL,
lp_servicename(session_info,
snum),
&pinfo2)) {
nt_printer_publish(session_info,
session_info,
msg_ctx,
pinfo2,
DSPRINT_UNPUBLISH);
TALLOC_FREE(pinfo2);
}
nt_printer_remove(session_info, session_info, msg_ctx,
pname);
} else {
DEBUG(8, ("Adding default registry entry for printer "
"[%s], if it doesn't exist.\n", sname));
nt_printer_add(session_info, session_info, msg_ctx,
sname);
}
}
/* finally, purge old snums */
delete_and_reload_printers();
TALLOC_FREE(session_info);
}