void dsk_daemon_add_cmdline_args (dsk_boolean with_dsk_prefix) { unsigned skip = with_dsk_prefix ? 0 : strlen ("dsk-"); #define MAYBE_SKIP_DSK_PREFIX(static_string, skip) \ &(static_string[skip]) dsk_cmdline_add_boolean (MAYBE_SKIP_DSK_PREFIX("dsk-fork", skip), "fork and run in the background", NULL, 0, &dsk_daemon_do_fork); dsk_cmdline_add_boolean (MAYBE_SKIP_DSK_PREFIX("dsk-watchdog", skip), "restart if the program dies", NULL, 0, &dsk_daemon_watchdog); dsk_cmdline_add_string (MAYBE_SKIP_DSK_PREFIX("dsk-pid-filename", skip), "file to write PID to, lock", "FILENAME", 0, &dsk_daemon_pid_filename); dsk_cmdline_add_func (MAYBE_SKIP_DSK_PREFIX("dsk-log-template", skip), "redirect stdout and stderr to the given file", "STRFTIME_FILENAME", 0, handle_dsk_log_template, NULL); dsk_cmdline_add_func (MAYBE_SKIP_DSK_PREFIX("dsk-log-timezone", skip), "use timezone for filenames and logs", "TZSPEC", 0, handle_dsk_log_timezone, NULL); dsk_cmdline_add_string (MAYBE_SKIP_DSK_PREFIX("dsk-alert-script", skip), "for the watchdog to run if the subprocess terminates", "SCRIPT", 0, &dsk_daemon_alert_script); dsk_cmdline_add_uint (MAYBE_SKIP_DSK_PREFIX("dsk-alert-interval", skip), "minimum time between invocation of alert script", "SECONDS", 0, &dsk_daemon_alert_interval); #undef MAYBE_SKIP_DSK_PREFIX }
int main(int argc, char **argv) { DskDnsConfigFlags cfg_flags = DSK_DNS_CONFIG_FLAGS_INIT; dsk_boolean no_searchpath = DSK_FALSE; int i; dsk_cmdline_init ("perform DNS lookups", "Perform DNS lookups with Dsk DNS client.\n", "HOSTNAMES...", 0); dsk_cmdline_permit_extra_arguments (DSK_TRUE); dsk_cmdline_add_boolean ("ipv6", "Lookup names in the IPv6 namespace", NULL, 0, &use_ipv6); dsk_cmdline_add_boolean ("ipv4", "Lookup names in the IPv4 namespace", NULL, DSK_CMDLINE_REVERSED, &use_ipv6); dsk_cmdline_add_boolean ("cname", "Return CNAME or POINTER records if they arise", NULL, 0, &no_links); dsk_cmdline_add_string ("nameserver", "Specify the nameserver to use", "IP", 0, &nameserver); dsk_cmdline_add_boolean ("verbose", "Print extra messages", NULL, 0, &verbose); dsk_cmdline_add_boolean ("no-searchpath", "Do not use /etc/resolv.conf's searchpath", NULL, 0, &no_searchpath); dsk_cmdline_add_boolean ("fatal-errors", "Exit on first error", NULL, 0, &fatal_errors); dsk_cmdline_process_args (&argc, &argv); if (no_searchpath) cfg_flags &= ~DSK_DNS_CONFIG_USE_RESOLV_CONF_SEARCHPATH; if (nameserver == NULL) { /* just use default config */ } else { DskIpAddress addr; cfg_flags &= ~DSK_DNS_CONFIG_USE_RESOLV_CONF_NS; if (!dsk_ip_address_parse_numeric (nameserver, &addr)) dsk_error ("error parsing nameserver address (must be numeric)"); dsk_dns_client_add_nameserver (&addr); } dsk_dns_client_config (cfg_flags); if (verbose) { dsk_dns_config_dump (); } if (argc == 1) dsk_error ("expected name to resolve"); for (i = 1; i < argc; i++) { n_running++; dsk_dns_lookup (argv[i], use_ipv6, handle_dns_result, argv[i]); while (n_running >= max_concurrent) dsk_main_run_once (); } dsk_dispatch_destroy_default (); return exit_status; }