static void smb_pcap_updated(struct messaging_context *msg, void *private_data, uint32_t msg_type, struct server_id server_id, DATA_BLOB *data) { struct tevent_context *ev_ctx = talloc_get_type_abort(private_data, struct tevent_context); DEBUG(10,("Got message saying pcap was updated. Reloading.\n")); change_to_root_user(); delete_and_reload_printers(ev_ctx, msg); }
/** * @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); }