config.c

    if (event == EVENT_REFRESH) {
	if (ctrl == ed->listbox) {
	    char *key, *val;
	    dlg_update_start(ctrl, dlg);
	    dlg_listbox_clear(ctrl, dlg);
	    for (val = conf_get_str_strs(conf, CONF_environmt, NULL, &key);
		 val != NULL;
		 val = conf_get_str_strs(conf, CONF_environmt, key, &key)) {
		char *p = dupprintf("%s\t%s", key, val);
		dlg_listbox_add(ctrl, dlg, p);
		sfree(p);
	    }
	    dlg_update_done(ctrl, dlg);
	}
    } else if (event == EVENT_ACTION) {
	if (ctrl == ed->addbutton) {
	    char *key, *val, *str;
	    key = dlg_editbox_get(ed->varbox, dlg);
	    if (!*key) {
		sfree(key);
		dlg_beep(dlg);
		return;
	    }
	    val = dlg_editbox_get(ed->valbox, dlg);
	    if (!*val) {
		sfree(key);
		sfree(val);
		dlg_beep(dlg);
		return;
	    }
	    conf_set_str_str(conf, CONF_environmt, key, val);
	    str = dupcat(key, "\t", val, NULL);
	    dlg_editbox_set(ed->varbox, dlg, "");
	    dlg_editbox_set(ed->valbox, dlg, "");
	    sfree(str);
	    sfree(key);
	    sfree(val);
	    dlg_refresh(ed->listbox, dlg);
	} else if (ctrl == ed->rembutton) {
	    int i = dlg_listbox_index(ed->listbox, dlg);
	    if (i < 0) {
		dlg_beep(dlg);
	    } else {
		char *key, *val;

		key = conf_get_str_nthstrkey(conf, CONF_environmt, i);
		if (key) {
		    /* Populate controls with the entry we're about to delete
		     * for ease of editing */
		    val = conf_get_str_str(conf, CONF_environmt, key);
		    dlg_editbox_set(ed->varbox, dlg, key);
		    dlg_editbox_set(ed->valbox, dlg, val);
		    /* And delete it */
		    conf_del_str_str(conf, CONF_environmt, key);
		}
	    }
	    dlg_refresh(ed->listbox, dlg);
	}
    }
}

struct portfwd_data {
    union control *addbutton, *rembutton, *listbox;
    union control *sourcebox, *destbox, *direction;
#ifndef NO_IPV6
    union control *addressfamily;
#endif
};

static void portfwd_handler(union control *ctrl, void *dlg,
			    void *data, int event)
{
    Conf *conf = (Conf *)data;
    struct portfwd_data *pfd =
	(struct portfwd_data *)ctrl->generic.context.p;

    if (event == EVENT_REFRESH) {
	if (ctrl == pfd->listbox) {
	    char *key, *val;
	    dlg_update_start(ctrl, dlg);
	    dlg_listbox_clear(ctrl, dlg);
	    for (val = conf_get_str_strs(conf, CONF_portfwd, NULL, &key);
		 val != NULL;
		 val = conf_get_str_strs(conf, CONF_portfwd, key, &key)) {
		char *p;
                if (!strcmp(val, "D")) {
                    char *L;
                    /*
                     * A dynamic forwarding is stored as L12345=D or
                     * 6L12345=D (since it's mutually exclusive with
                     * L12345=anything else), but displayed as D12345
                     * to match the fiction that 'Local', 'Remote' and
                     * 'Dynamic' are three distinct modes and also to
                     * align with OpenSSH's command line option syntax
                     * that people will already be used to. So, for
                     * display purposes, find the L in the key string
                     * and turn it into a D.
                     */
                    p = dupprintf("%s\t", key);
                    L = strchr(p, 'L');
                    if (L) *L = 'D';
                } else
                    p = dupprintf("%s\t%s", key, val);
		dlg_listbox_add(ctrl, dlg, p);
		sfree(p);
	    }
	    dlg_update_done(ctrl, dlg);
	} else if (ctrl == pfd->direction) {
	    /*
	     * Default is Local.
	     */
	    dlg_radiobutton_set(ctrl, dlg, 0);
#ifndef NO_IPV6
	} else if (ctrl == pfd->addressfamily) {
	    dlg_radiobutton_set(ctrl, dlg, 0);
#endif
	}
    } else if (event == EVENT_ACTION) {
	if (ctrl == pfd->addbutton) {
	    char *family, *type, *src, *key, *val;
	    int whichbutton;

#ifndef NO_IPV6
	    whichbutton = dlg_radiobutton_get(pfd->addressfamily, dlg);
	    if (whichbutton == 1)
		family = "4";
	    else if (whichbutton == 2)
		family = "6";
	    else
#endif
		family = "";

	    whichbutton = dlg_radiobutton_get(pfd->direction, dlg);
	    if (whichbutton == 0)
		type = "L";
	    else if (whichbutton == 1)
		type = "R";
	    else
		type = "D";

	    src = dlg_editbox_get(pfd->sourcebox, dlg);
	    if (!*src) {
		dlg_error_msg(dlg, "You need to specify a source port number");
		sfree(src);
		return;
	    }
	    if (*type != 'D') {
		val = dlg_editbox_get(pfd->destbox, dlg);
		if (!*val || !host_strchr(val, ':')) {
		    dlg_error_msg(dlg,
				  "You need to specify a destination address\n"
				  "in the form \"host.name:port\"");
		    sfree(src);
		    sfree(val);
		    return;
		}
	    } else {
                type = "L";
		val = dupstr("D");     /* special case */
            }

	    key = dupcat(family, type, src, NULL);
	    sfree(src);

	    if (conf_get_str_str_opt(conf, CONF_portfwd, key)) {
		dlg_error_msg(dlg, "Specified forwarding already exists");
	    } else {
		conf_set_str_str(conf, CONF_portfwd, key, val);
	    }

	    sfree(key);
	    sfree(val);
	    dlg_refresh(pfd->listbox, dlg);
	} else if (ctrl == pfd->rembutton) {
	    int i = dlg_listbox_index(pfd->listbox, dlg);
	    if (i < 0) {
		dlg_beep(dlg);
	    } else {
		char *key, *val, *p;

		key = conf_get_str_nthstrkey(conf, CONF_portfwd, i);
		if (key) {
		    static const char *const afs = "A46";
		    static const char *const dirs = "LRD";
		    char *afp;
		    int dir;
#ifndef NO_IPV6
		    int idx;
#endif

		    /* Populate controls with the entry we're about to delete
		     * for ease of editing */
		    p = key;

		    afp = strchr(afs, *p);
#ifndef NO_IPV6
		    idx = afp ? afp-afs : 0;
#endif
		    if (afp)
			p++;
#ifndef NO_IPV6
		    dlg_radiobutton_set(pfd->addressfamily, dlg, idx);
#endif

		    dir = *p;

                    val = conf_get_str_str(conf, CONF_portfwd, key);
		    if (!strcmp(val, "D")) {
                        dir = 'D';
			val = "";
		    }

		    dlg_radiobutton_set(pfd->direction, dlg,
					strchr(dirs, dir) - dirs);
		    p++;

		    dlg_editbox_set(pfd->sourcebox, dlg, p);
		    dlg_editbox_set(pfd->destbox, dlg, val);
		    /* And delete it */
		    conf_del_str_str(conf, CONF_portfwd, key);
		}
	    }
	    dlg_refresh(pfd->listbox, dlg);
	}
    }
}

struct manual_hostkey_data {
    union control *addbutton, *rembutton, *listbox, *keybox;
};

static void manual_hostkey_handler(union control *ctrl, void *dlg,
                                   void *data, int event)
{
    Conf *conf = (Conf *)data;
    struct manual_hostkey_data *mh =
	(struct manual_hostkey_data *)ctrl->generic.context.p;

    if (event == EVENT_REFRESH) {
	if (ctrl == mh->listbox) {
	    char *key, *val;
	    dlg_update_start(ctrl, dlg);
	    dlg_listbox_clear(ctrl, dlg);
	    for (val = conf_get_str_strs(conf, CONF_ssh_manual_hostkeys,
                                         NULL, &key);
		 val != NULL;
		 val = conf_get_str_strs(conf, CONF_ssh_manual_hostkeys,
                                         key, &key)) {
		dlg_listbox_add(ctrl, dlg, key);
	    }
	    dlg_update_done(ctrl, dlg);
	}
    } else if (event == EVENT_ACTION) {
	if (ctrl == mh->addbutton) {
	    char *key;

	    key = dlg_editbox_get(mh->keybox, dlg);
	    if (!*key) {
		dlg_error_msg(dlg, "You need to specify a host key or "
                              "fingerprint");
		sfree(key);
		return;
	    }

            if (!validate_manual_hostkey(key)) {
		dlg_error_msg(dlg, "Host key is not in a valid format");
            } else if (conf_get_str_str_opt(conf, CONF_ssh_manual_hostkeys,
                                            key)) {
		dlg_error_msg(dlg, "Specified host key is already listed");
	    } else {
		conf_set_str_str(conf, CONF_ssh_manual_hostkeys, key, "");
	    }

	    sfree(key);
	    dlg_refresh(mh->listbox, dlg);
	} else if (ctrl == mh->rembutton) {
	    int i = dlg_listbox_index(mh->listbox, dlg);
	    if (i < 0) {
		dlg_beep(dlg);
	    } else {
		char *key;

		key = conf_get_str_nthstrkey(conf, CONF_ssh_manual_hostkeys, i);
		if (key) {
		    dlg_editbox_set(mh->keybox, dlg, key);
		    /* And delete it */
		    conf_del_str_str(conf, CONF_ssh_manual_hostkeys, key);
		}
	    }
	    dlg_refresh(mh->listbox, dlg);
	}
    }
}

void setup_config_box(struct controlbox *b, int midsession,
		      int protocol, int protcfginfo)
{
    struct controlset *s;
    struct sessionsaver_data *ssd;
    struct charclass_data *ccd;
    struct colour_data *cd;
    struct ttymodes_data *td;
    struct environ_data *ed;
    struct portfwd_data *pfd;
    struct manual_hostkey_data *mh;
    union control *c;
    char *str;

    ssd = (struct sessionsaver_data *)
	ctrl_alloc_with_free(b, sizeof(struct sessionsaver_data),
                             sessionsaver_data_free);
    memset(ssd, 0, sizeof(*ssd));
    ssd->savedsession = dupstr("");
    ssd->midsession = midsession;

    /*
     * The standard panel that appears at the bottom of all panels:
     * Open, Cancel, Apply etc.
     */
    s = ctrl_getset(b, "", "", "");
    ctrl_columns(s, 5, 20, 20, 20, 20, 20);
    ssd->okbutton = ctrl_pushbutton(s,
				    (midsession ? "Apply" : "Open"),
				    (char)(midsession ? 'a' : 'o'),
				    HELPCTX(no_help),
				    sessionsaver_handler, P(ssd));
    ssd->okbutton->button.isdefault = TRUE;
    ssd->okbutton->generic.column = 3;
    ssd->cancelbutton = ctrl_pushbutton(s, "Cancel", 'c', HELPCTX(no_help),
					sessionsaver_handler, P(ssd));
    ssd->cancelbutton->button.iscancel = TRUE;
    ssd->cancelbutton->generic.column = 4;
    /* We carefully don't close the 5-column part, so that platform-
     * specific add-ons can put extra buttons alongside Open and Cancel. */

    /*
     * The Session panel.
     */
    str = dupprintf("Basic options for your %s session", appname);
    ctrl_settitle(b, "Session", str);
    sfree(str);

    if (!midsession) {
	struct hostport *hp = (struct hostport *)
	    ctrl_alloc(b, sizeof(struct hostport));

	s = ctrl_getset(b, "Session", "hostport",
			"Specify the destination you want to connect to");
	ctrl_columns(s, 2, 75, 25);
	c = ctrl_editbox(s, HOST_BOX_TITLE, 'n', 100,
			 HELPCTX(session_hostname),
			 config_host_handler, I(0), I(0));
	c->generic.column = 0;
	hp->host = c;
	c = ctrl_editbox(s, PORT_BOX_TITLE, 'p', 100,
			 HELPCTX(session_hostname),
			 config_port_handler, I(0), I(0));
	c->generic.column = 1;
	hp->port = c;
	ctrl_columns(s, 1, 100);

	if (!backend_from_proto(PROT_SSH)) {
	    ctrl_radiobuttons(s, "Connection type:", NO_SHORTCUT, 3,
			      HELPCTX(session_hostname),
			      config_protocolbuttons_handler, P(hp),
			      "Raw", 'w', I(PROT_RAW),
			      "Telnet", 't', I(PROT_TELNET),
			      "Rlogin", 'i', I(PROT_RLOGIN),
			      NULL);
	} else {
	    ctrl_radiobuttons(s, "Connection type:", NO_SHORTCUT, 4,
			      HELPCTX(session_hostname),
			      config_protocolbuttons_handler, P(hp),
			      "Raw", 'w', I(PROT_RAW),
			      "Telnet", 't', I(PROT_TELNET),
			      "Rlogin", 'i', I(PROT_RLOGIN),
			      "SSH", 's', I(PROT_SSH),
			      NULL);
	}
    }

    /*
     * The Load/Save panel is available even in mid-session.
     */
    s = ctrl_getset(b, "Session", "savedsessions",
		    midsession ? "Save the current session settings" :
		    "Load, save or delete a stored session");
    ctrl_columns(s, 2, 75, 25);
    get_sesslist(&ssd->sesslist, TRUE);
    ssd->editbox = ctrl_editbox(s, "Saved Sessions", 'e', 100,
				HELPCTX(session_saved),
				sessionsaver_handler, P(ssd), P(NULL));
    ssd->editbox->generic.column = 0;
    /* Reset columns so that the buttons are alongside the list, rather
     * than alongside that edit box. */
    ctrl_columns(s, 1, 100);
    ctrl_columns(s, 2, 75, 25);
    ssd->listbox = ctrl_listbox(s, NULL, NO_SHORTCUT,
				HELPCTX(session_saved),
				sessionsaver_handler, P(ssd));
    ssd->listbox->generic.column = 0;
    ssd->listbox->listbox.height = 7;
    if (!midsession) {
	ssd->loadbutton = ctrl_pushbutton(s, "Load", 'l',
					  HELPCTX(session_saved),
					  sessionsaver_handler, P(ssd));
	ssd->loadbutton->generic.column = 1;
    } else {
	/* We can't offer the Load button mid-session, as it would allow the
	 * user to load and subsequently save settings they can't see. (And
	 * also change otherwise immutable settings underfoot; that probably
	 * shouldn't be a problem, but.) */
	ssd->loadbutton = NULL;
    }
    /* "Save" button is permitted mid-session. */
    ssd->savebutton = ctrl_pushbutton(s, "Save", 'v',
				      HELPCTX(session_saved),
				      sessionsaver_handler, P(ssd));
    ssd->savebutton->generic.column = 1;
    if (!midsession) {
	ssd->delbutton = ctrl_pushbutton(s, "Delete", 'd',
					 HELPCTX(session_saved),
					 sessionsaver_handler, P(ssd));
	ssd->delbutton->generic.column = 1;
    } else {
	/* Disable the Delete button mid-session too, for UI consistency. */
	ssd->delbutton = NULL;
    }
    ctrl_columns(s, 1, 100);

    s = ctrl_getset(b, "Session", "otheropts", NULL);
    ctrl_radiobuttons(s, "Close window on exit:", 'x', 4,
                      HELPCTX(session_coe),
                      conf_radiobutton_handler,
                      I(CONF_close_on_exit),
                      "Always", I(FORCE_ON),
                      "Never", I(FORCE_OFF),
                      "Only on clean exit", I(AUTO), NULL);

    /*
     * The Session/Logging panel.
     */
    ctrl_settitle(b, "Session/Logging", "Options controlling session logging");

    s = ctrl_getset(b, "Session/Logging", "main", NULL);
    /*
     * The logging buttons change depending on whether SSH packet
     * logging can sensibly be available.
     */
    {
	char *sshlogname, *sshrawlogname;
	if ((midsession && protocol == PROT_SSH) ||
	    (!midsession && backend_from_proto(PROT_SSH))) {
	    sshlogname = "SSH packets";
	    sshrawlogname = "SSH packets and raw data";
        } else {
	    sshlogname = NULL;	       /* this will disable both buttons */
	    sshrawlogname = NULL;      /* this will just placate optimisers */
        }
	ctrl_radiobuttons(s, "Session logging:", NO_SHORTCUT, 2,
			  HELPCTX(logging_main),
			  loggingbuttons_handler,
			  I(CONF_logtype),
			  "None", 't', I(LGTYP_NONE),
			  "Printable output", 'p', I(LGTYP_ASCII),
			  "All session output", 'l', I(LGTYP_DEBUG),
			  sshlogname, 's', I(LGTYP_PACKETS),
			  sshrawlogname, 'r', I(LGTYP_SSHRAW),
			  NULL);
    }
    ctrl_filesel(s, "Log file name:", 'f',
		 NULL, TRUE, "Select session log file name",
		 HELPCTX(logging_filename),
		 conf_filesel_handler, I(CONF_logfilename));
    ctrl_text(s, "(Log file name can contain &Y, &M, &D for date,"
	      " &T for time, and &H for host name)",
	      HELPCTX(logging_filename));
    ctrl_radiobuttons(s, "What to do if the log file already exists:", 'e', 1,
		      HELPCTX(logging_exists),
		      conf_radiobutton_handler, I(CONF_logxfovr),
		      "Always overwrite it", I(LGXF_OVR),
		      "Always append to the end of it", I(LGXF_APN),
		      "Ask the user every time", I(LGXF_ASK), NULL);
    ctrl_checkbox(s, "Flush log file frequently", 'u',
		 HELPCTX(logging_flush),
		 conf_checkbox_handler, I(CONF_logflush));

    if ((midsession && protocol == PROT_SSH) ||
	(!midsession && backend_from_proto(PROT_SSH))) {
	s = ctrl_getset(b, "Session/Logging", "ssh",
			"Options specific to SSH packet logging");
	ctrl_checkbox(s, "Omit known password fields", 'k',
		      HELPCTX(logging_ssh_omit_password),
		      conf_checkbox_handler, I(CONF_logomitpass));
	ctrl_checkbox(s, "Omit session data", 'd',
		      HELPCTX(logging_ssh_omit_data),
		      conf_checkbox_handler, I(CONF_logomitdata));
    }

    /*
     * The Terminal panel.
     */
    ctrl_settitle(b, "Terminal", "Options controlling the terminal emulation");

    s = ctrl_getset(b, "Terminal", "general", "Set various terminal options");
    ctrl_checkbox(s, "Auto wrap mode initially on", 'w',
		  HELPCTX(terminal_autowrap),
		  conf_checkbox_handler, I(CONF_wrap_mode));
    ctrl_checkbox(s, "DEC Origin Mode initially on", 'd',
		  HELPCTX(terminal_decom),
		  conf_checkbox_handler, I(CONF_dec_om));
    ctrl_checkbox(s, "Implicit CR in every LF", 'r',
		  HELPCTX(terminal_lfhascr),
		  conf_checkbox_handler, I(CONF_lfhascr));
    ctrl_checkbox(s, "Implicit LF in every CR", 'f',
		  HELPCTX(terminal_crhaslf),
		  conf_checkbox_handler, I(CONF_crhaslf));
    ctrl_checkbox(s, "Use background colour to erase screen", 'e',
		  HELPCTX(terminal_bce),
		  conf_checkbox_handler, I(CONF_bce));
    ctrl_checkbox(s, "Enable blinking text", 'n',
		  HELPCTX(terminal_blink),
		  conf_checkbox_handler, I(CONF_blinktext));
    ctrl_editbox(s, "Answerback to ^E:", 's', 100,
		 HELPCTX(terminal_answerback),
		 conf_editbox_handler, I(CONF_answerback), I(1));

    s = ctrl_getset(b, "Terminal", "ldisc", "Line discipline options");
    ctrl_radiobuttons(s, "Local echo:", 'l', 3,
		      HELPCTX(terminal_localecho),
		      conf_radiobutton_handler,I(CONF_localecho),
		      "Auto", I(AUTO),
		      "Force on", I(FORCE_ON),
		      "Force off", I(FORCE_OFF), NULL);
    ctrl_radiobuttons(s, "Local line editing:", 't', 3,
		      HELPCTX(terminal_localedit),
		      conf_radiobutton_handler,I(CONF_localedit),
		      "Auto", I(AUTO),
		      "Force on", I(FORCE_ON),
		      "Force off", I(FORCE_OFF), NULL);

    s = ctrl_getset(b, "Terminal", "printing", "Remote-controlled printing");
    ctrl_combobox(s, "Printer to send ANSI printer output to:", 'p', 100,
		  HELPCTX(terminal_printing),
		  printerbox_handler, P(NULL), P(NULL));

    /*
     * The Terminal/Keyboard panel.
     */
    ctrl_settitle(b, "Terminal/Keyboard",
		  "Options controlling the effects of keys");

    s = ctrl_getset(b, "Terminal/Keyboard", "mappings",
		    "Change the sequences sent by:");
    ctrl_radiobuttons(s, "The Backspace key", 'b', 2,
		      HELPCTX(keyboard_backspace),
		      conf_radiobutton_handler,
		      I(CONF_bksp_is_delete),
		      "Control-H", I(0), "Control-? (127)", I(1), NULL);
    ctrl_radiobuttons(s, "The Home and End keys", 'e', 2,
		      HELPCTX(keyboard_homeend),
		      conf_radiobutton_handler,
		      I(CONF_rxvt_homeend),
		      "Standard", I(0), "rxvt", I(1), NULL);
    ctrl_radiobuttons(s, "The Function keys and keypad", 'f', 3,
		      HELPCTX(keyboard_funkeys),
		      conf_radiobutton_handler,
		      I(CONF_funky_type),
		      "ESC[n~", I(0), "Linux", I(1), "Xterm R6", I(2),
		      "VT400", I(3), "VT100+", I(4), "SCO", I(5), NULL);

    s = ctrl_getset(b, "Terminal/Keyboard", "appkeypad",
		    "Application keypad settings:");
    ctrl_radiobuttons(s, "Initial state of cursor keys:", 'r', 3,
		      HELPCTX(keyboard_appcursor),
		      conf_radiobutton_handler,
		      I(CONF_app_cursor),
		      "Normal", I(0), "Application", I(1), NULL);
    ctrl_radiobuttons(s, "Initial state of numeric keypad:", 'n', 3,
		      HELPCTX(keyboard_appkeypad),
		      numeric_keypad_handler, P(NULL),
		      "Normal", I(0), "Application", I(1), "NetHack", I(2),
		      NULL);

    /*
     * The Terminal/Bell panel.
     */
    ctrl_settitle(b, "Terminal/Bell",
		  "Options controlling the terminal bell");

    s = ctrl_getset(b, "Terminal/Bell", "style", "Set the style of bell");
    ctrl_radiobuttons(s, "Action to happen when a bell occurs:", 'b', 1,
		      HELPCTX(bell_style),
		      conf_radiobutton_handler, I(CONF_beep),
		      "None (bell disabled)", I(BELL_DISABLED),
		      "Make default system alert sound", I(BELL_DEFAULT),
		      "Visual bell (flash window)", I(BELL_VISUAL), NULL);

    s = ctrl_getset(b, "Terminal/Bell", "overload",
		    "Control the bell overload behaviour");
    ctrl_checkbox(s, "Bell is temporarily disabled when over-used", 'd',
		  HELPCTX(bell_overload),
		  conf_checkbox_handler, I(CONF_bellovl));
    ctrl_editbox(s, "Over-use means this many bells...", 'm', 20,
		 HELPCTX(bell_overload),
		 conf_editbox_handler, I(CONF_bellovl_n), I(-1));
    ctrl_editbox(s, "... in this many seconds", 't', 20,
		 HELPCTX(bell_overload),
		 conf_editbox_handler, I(CONF_bellovl_t),
		 I(-TICKSPERSEC));
    ctrl_text(s, "The bell is re-enabled after a few seconds of silence.",
	      HELPCTX(bell_overload));
    ctrl_editbox(s, "Seconds of silence required", 's', 20,
		 HELPCTX(bell_overload),
		 conf_editbox_handler, I(CONF_bellovl_s),
		 I(-TICKSPERSEC));

    /*
     * The Terminal/Features panel.
     */
    ctrl_settitle(b, "Terminal/Features",
		  "Enabling and disabling advanced terminal features");

    s = ctrl_getset(b, "Terminal/Features", "main", NULL);
    ctrl_checkbox(s, "Disable application cursor keys mode", 'u',
		  HELPCTX(features_application),
		  conf_checkbox_handler, I(CONF_no_applic_c));
    ctrl_checkbox(s, "Disable application keypad mode", 'k',
		  HELPCTX(features_application),
		  conf_checkbox_handler, I(CONF_no_applic_k));
    ctrl_checkbox(s, "Disable xterm-style mouse reporting", 'x',
		  HELPCTX(features_mouse),
		  conf_checkbox_handler, I(CONF_no_mouse_rep));
    ctrl_checkbox(s, "Disable remote-controlled terminal resizing", 's',
		  HELPCTX(features_resize),
		  conf_checkbox_handler,
		  I(CONF_no_remote_resize));
    ctrl_checkbox(s, "Disable switching to alternate terminal screen", 'w',
		  HELPCTX(features_altscreen),
		  conf_checkbox_handler, I(CONF_no_alt_screen));
    ctrl_checkbox(s, "Disable remote-controlled window title changing", 't',
		  HELPCTX(features_retitle),
		  conf_checkbox_handler,
		  I(CONF_no_remote_wintitle));
    ctrl_radiobuttons(s, "Response to remote title query (SECURITY):", 'q', 3,
		      HELPCTX(features_qtitle),
		      conf_radiobutton_handler,
		      I(CONF_remote_qtitle_action),
		      "None", I(TITLE_NONE),
		      "Empty string", I(TITLE_EMPTY),
		      "Window title", I(TITLE_REAL), NULL);
    ctrl_checkbox(s, "Disable destructive backspace on server sending ^?",'b',
		  HELPCTX(features_dbackspace),
		  conf_checkbox_handler, I(CONF_no_dbackspace));
    ctrl_checkbox(s, "Disable remote-controlled character set configuration",
		  'r', HELPCTX(features_charset), conf_checkbox_handler,
		  I(CONF_no_remote_charset));
    ctrl_checkbox(s, "Disable Arabic text shaping",
		  'l', HELPCTX(features_arabicshaping), conf_checkbox_handler,
		  I(CONF_arabicshaping));
    ctrl_checkbox(s, "Disable bidirectional text display",
		  'd', HELPCTX(features_bidi), conf_checkbox_handler,
		  I(CONF_bidi));

    /*
     * The Window panel.
     */
    str = dupprintf("Options controlling %s's window", appname);
    ctrl_settitle(b, "Window", str);
    sfree(str);

    s = ctrl_getset(b, "Window", "size", "Set the size of the window");
    ctrl_columns(s, 2, 50, 50);
    c = ctrl_editbox(s, "Columns", 'm', 100,
		     HELPCTX(window_size),
		     conf_editbox_handler, I(CONF_width), I(-1));
    c->generic.column = 0;
    c = ctrl_editbox(s, "Rows", 'r', 100,
		     HELPCTX(window_size),
		     conf_editbox_handler, I(CONF_height),I(-1));
    c->generic.column = 1;
    ctrl_columns(s, 1, 100);

    s = ctrl_getset(b, "Window", "scrollback",
		    "Control the scrollback in the window");
    ctrl_editbox(s, "Lines of scrollback", 's', 50,
		 HELPCTX(window_scrollback),
		 conf_editbox_handler, I(CONF_savelines), I(-1));
    ctrl_checkbox(s, "Display scrollbar", 'd',
		  HELPCTX(window_scrollback),
		  conf_checkbox_handler, I(CONF_scrollbar));
    ctrl_checkbox(s, "Reset scrollback on keypress", 'k',
		  HELPCTX(window_scrollback),
		  conf_checkbox_handler, I(CONF_scroll_on_key));
    ctrl_checkbox(s, "Reset scrollback on display activity", 'p',
		  HELPCTX(window_scrollback),
		  conf_checkbox_handler, I(CONF_scroll_on_disp));
    ctrl_checkbox(s, "Push erased text into scrollback", 'e',
		  HELPCTX(window_erased),
		  conf_checkbox_handler,
		  I(CONF_erase_to_scrollback));

    /*
     * The Window/Appearance panel.
     */
    str = dupprintf("Configure the appearance of %s's window", appname);
    ctrl_settitle(b, "Window/Appearance", str);
    sfree(str);

    s = ctrl_getset(b, "Window/Appearance", "cursor",
		    "Adjust the use of the cursor");
    ctrl_radiobuttons(s, "Cursor appearance:", NO_SHORTCUT, 3,
		      HELPCTX(appearance_cursor),
		      conf_radiobutton_handler,
		      I(CONF_cursor_type),
		      "Block", 'l', I(0),
		      "Underline", 'u', I(1),
		      "Vertical line", 'v', I(2), NULL);
    ctrl_checkbox(s, "Cursor blinks", 'b',
		  HELPCTX(appearance_cursor),
		  conf_checkbox_handler, I(CONF_blink_cur));

    s = ctrl_getset(b, "Window/Appearance", "font",
		    "Font settings");
    ctrl_fontsel(s, "Font used in the terminal window", 'n',
		 HELPCTX(appearance_font),
		 conf_fontsel_handler, I(CONF_font));

    s = ctrl_getset(b, "Window/Appearance", "mouse",
		    "Adjust the use of the mouse pointer");
    ctrl_checkbox(s, "Hide mouse pointer when typing in window", 'p',
		  HELPCTX(appearance_hidemouse),
		  conf_checkbox_handler, I(CONF_hide_mouseptr));

    s = ctrl_getset(b, "Window/Appearance", "border",
		    "Adjust the window border");
    ctrl_editbox(s, "Gap between text and window edge:", 'e', 20,
		 HELPCTX(appearance_border),
		 conf_editbox_handler,
		 I(CONF_window_border), I(-1));

    /*
     * The Window/Behaviour panel.
     */
    str = dupprintf("Configure the behaviour of %s's window", appname);
    ctrl_settitle(b, "Window/Behaviour", str);
    sfree(str);

    s = ctrl_getset(b, "Window/Behaviour", "title",
		    "Adjust the behaviour of the window title");
    ctrl_editbox(s, "Window title:", 't', 100,
		 HELPCTX(appearance_title),
		 conf_editbox_handler, I(CONF_wintitle), I(1));
    ctrl_checkbox(s, "Separate window and icon titles", 'i',
		  HELPCTX(appearance_title),
		  conf_checkbox_handler,
		  I(CHECKBOX_INVERT | CONF_win_name_always));

    s = ctrl_getset(b, "Window/Behaviour", "main", NULL);
    ctrl_checkbox(s, "Warn before closing window", 'w',
		  HELPCTX(behaviour_closewarn),
		  conf_checkbox_handler, I(CONF_warn_on_close));

    /*
     * The Window/Translation panel.
     */
    ctrl_settitle(b, "Window/Translation",
		  "Options controlling character set translation");

    s = ctrl_getset(b, "Window/Translation", "trans",
		    "Character set translation");
    ctrl_combobox(s, "Remote character set:",
		  'r', 100, HELPCTX(translation_codepage),
		  codepage_handler, P(NULL), P(NULL));

    s = ctrl_getset(b, "Window/Translation", "tweaks", NULL);
    ctrl_checkbox(s, "Treat CJK ambiguous characters as wide", 'w',
		  HELPCTX(translation_cjk_ambig_wide),
		  conf_checkbox_handler, I(CONF_cjk_ambig_wide));

    str = dupprintf("Adjust how %s handles line drawing characters", appname);
    s = ctrl_getset(b, "Window/Translation", "linedraw", str);
    sfree(str);
    ctrl_radiobuttons(s, "Handling of line drawing characters:", NO_SHORTCUT,1,
		      HELPCTX(translation_linedraw),
		      conf_radiobutton_handler,
		      I(CONF_vtmode),
		      "Use Unicode line drawing code points",'u',I(VT_UNICODE),
		      "Poor man's line drawing (+, - and |)",'p',I(VT_POORMAN),
		      NULL);
    ctrl_checkbox(s, "Copy and paste line drawing characters as lqqqk",'d',
		  HELPCTX(selection_linedraw),
		  conf_checkbox_handler, I(CONF_rawcnp));

    /*
     * The Window/Selection panel.
     */
    ctrl_settitle(b, "Window/Selection", "Options controlling copy and paste");
	
    s = ctrl_getset(b, "Window/Selection", "mouse",
		    "Control use of mouse");
    ctrl_checkbox(s, "Shift overrides application's use of mouse", 'p',
		  HELPCTX(selection_shiftdrag),
		  conf_checkbox_handler, I(CONF_mouse_override));
    ctrl_radiobuttons(s,
		      "Default selection mode (Alt+drag does the other one):",
		      NO_SHORTCUT, 2,
		      HELPCTX(selection_rect),
		      conf_radiobutton_handler,
		      I(CONF_rect_select),
		      "Normal", 'n', I(0),
		      "Rectangular block", 'r', I(1), NULL);

    s = ctrl_getset(b, "Window/Selection", "charclass",
		    "Control the select-one-word-at-a-time mode");
    ccd = (struct charclass_data *)
	ctrl_alloc(b, sizeof(struct charclass_data));
    ccd->listbox = ctrl_listbox(s, "Character classes:", 'e',
				HELPCTX(selection_charclasses),
				charclass_handler, P(ccd));
    ccd->listbox->listbox.multisel = 1;
    ccd->listbox->listbox.ncols = 4;
    ccd->listbox->listbox.percentages = snewn(4, int);
    ccd->listbox->listbox.percentages[0] = 15;
    ccd->listbox->listbox.percentages[1] = 25;
    ccd->listbox->listbox.percentages[2] = 20;
    ccd->listbox->listbox.percentages[3] = 40;
    ctrl_columns(s, 2, 67, 33);
    ccd->editbox = ctrl_editbox(s, "Set to class", 't', 50,
				HELPCTX(selection_charclasses),
				charclass_handler, P(ccd), P(NULL));
    ccd->editbox->generic.column = 0;
    ccd->button = ctrl_pushbutton(s, "Set", 's',
				  HELPCTX(selection_charclasses),
				  charclass_handler, P(ccd));
    ccd->button->generic.column = 1;
    ctrl_columns(s, 1, 100);

    /*
     * The Window/Colours panel.
     */
    ctrl_settitle(b, "Window/Colours", "Options controlling use of colours");

    s = ctrl_getset(b, "Window/Colours", "general",
		    "General options for colour usage");
    ctrl_checkbox(s, "Allow terminal to specify ANSI colours", 'i',
		  HELPCTX(colours_ansi),
		  conf_checkbox_handler, I(CONF_ansi_colour));
    ctrl_checkbox(s, "Allow terminal to use xterm 256-colour mode", '2',
		  HELPCTX(colours_xterm256), conf_checkbox_handler,
		  I(CONF_xterm_256_colour));
    ctrl_radiobuttons(s, "Indicate bolded text by changing:", 'b', 3,
                      HELPCTX(colours_bold),
                      conf_radiobutton_handler, I(CONF_bold_style),
                      "The font", I(1),
                      "The colour", I(2),
                      "Both", I(3),
                      NULL);

    str = dupprintf("Adjust the precise colours %s displays", appname);
    s = ctrl_getset(b, "Window/Colours", "adjust", str);
    sfree(str);
    ctrl_text(s, "Select a colour from the list, and then click the"
	      " Modify button to change its appearance.",
	      HELPCTX(colours_config));
    ctrl_columns(s, 2, 67, 33);
    cd = (struct colour_data *)ctrl_alloc(b, sizeof(struct colour_data));
    cd->listbox = ctrl_listbox(s, "Select a colour to adjust:", 'u',
			       HELPCTX(colours_config), colour_handler, P(cd));
    cd->listbox->generic.column = 0;
    cd->listbox->listbox.height = 7;
    c = ctrl_text(s, "RGB value:", HELPCTX(colours_config));
    c->generic.column = 1;
    cd->redit = ctrl_editbox(s, "Red", 'r', 50, HELPCTX(colours_config),
			     colour_handler, P(cd), P(NULL));
    cd->redit->generic.column = 1;
    cd->gedit = ctrl_editbox(s, "Green", 'n', 50, HELPCTX(colours_config),
			     colour_handler, P(cd), P(NULL));
    cd->gedit->generic.column = 1;
    cd->bedit = ctrl_editbox(s, "Blue", 'e', 50, HELPCTX(colours_config),
			     colour_handler, P(cd), P(NULL));
    cd->bedit->generic.column = 1;
    cd->button = ctrl_pushbutton(s, "Modify", 'm', HELPCTX(colours_config),
				 colour_handler, P(cd));
    cd->button->generic.column = 1;
    ctrl_columns(s, 1, 100);

    /*
     * The Connection panel. This doesn't show up if we're in a
     * non-network utility such as pterm. We tell this by being
     * passed a protocol < 0.
     */
    if (protocol >= 0) {
	ctrl_settitle(b, "Connection", "Options controlling the connection");

	s = ctrl_getset(b, "Connection", "keepalive",
			"Sending of null packets to keep session active");
	ctrl_editbox(s, "Seconds between keepalives (0 to turn off)", 'k', 20,
		     HELPCTX(connection_keepalive),
		     conf_editbox_handler, I(CONF_ping_interval),
		     I(-1));

	if (!midsession) {
	    s = ctrl_getset(b, "Connection", "tcp",
			    "Low-level TCP connection options");
	    ctrl_checkbox(s, "Disable Nagle's algorithm (TCP_NODELAY option)",
			  'n', HELPCTX(connection_nodelay),
			  conf_checkbox_handler,
			  I(CONF_tcp_nodelay));
	    ctrl_checkbox(s, "Enable TCP keepalives (SO_KEEPALIVE option)",
			  'p', HELPCTX(connection_tcpkeepalive),
			  conf_checkbox_handler,
			  I(CONF_tcp_keepalives));
#ifndef NO_IPV6
	    s = ctrl_getset(b, "Connection", "ipversion",
			  "Internet protocol version");
	    ctrl_radiobuttons(s, NULL, NO_SHORTCUT, 3,
			  HELPCTX(connection_ipversion),
			  conf_radiobutton_handler,
			  I(CONF_addressfamily),
			  "Auto", 'u', I(ADDRTYPE_UNSPEC),
			  "IPv4", '4', I(ADDRTYPE_IPV4),
			  "IPv6", '6', I(ADDRTYPE_IPV6),
			  NULL);
#endif

	    {
		char *label = backend_from_proto(PROT_SSH) ?
		    "Logical name of remote host (e.g. for SSH key lookup):" :
		    "Logical name of remote host:";
		s = ctrl_getset(b, "Connection", "identity",
				"Logical name of remote host");
		ctrl_editbox(s, label, 'm', 100,
			     HELPCTX(connection_loghost),
			     conf_editbox_handler, I(CONF_loghost), I(1));
	    }
	}

	/*
	 * A sub-panel Connection/Data, containing options that
	 * decide on data to send to the server.
	 */
	if (!midsession) {
	    ctrl_settitle(b, "Connection/Data", "Data to send to the server");

	    s = ctrl_getset(b, "Connection/Data", "login",
			    "Login details");
	    ctrl_editbox(s, "Auto-login username", 'u', 50,
			 HELPCTX(connection_username),
			 conf_editbox_handler, I(CONF_username), I(1));
	    {
		/* We assume the local username is sufficiently stable
		 * to include on the dialog box. */
		char *user = get_username();
		char *userlabel = dupprintf("Use system username (%s)",
					    user ? user : "");
		sfree(user);
		ctrl_radiobuttons(s, "When username is not specified:", 'n', 4,
				  HELPCTX(connection_username_from_env),
				  conf_radiobutton_handler,
				  I(CONF_username_from_env),
				  "Prompt", I(FALSE),
				  userlabel, I(TRUE),
				  NULL);
		sfree(userlabel);
	    }

	    s = ctrl_getset(b, "Connection/Data", "term",
			    "Terminal details");
	    ctrl_editbox(s, "Terminal-type string", 't', 50,
			 HELPCTX(connection_termtype),
			 conf_editbox_handler, I(CONF_termtype), I(1));
	    ctrl_editbox(s, "Terminal speeds", 's', 50,
			 HELPCTX(connection_termspeed),
			 conf_editbox_handler, I(CONF_termspeed), I(1));

	    s = ctrl_getset(b, "Connection/Data", "env",
			    "Environment variables");
	    ctrl_columns(s, 2, 80, 20);
	    ed = (struct environ_data *)
		ctrl_alloc(b, sizeof(struct environ_data));
	    ed->varbox = ctrl_editbox(s, "Variable", 'v', 60,
				      HELPCTX(telnet_environ),
				      environ_handler, P(ed), P(NULL));
	    ed->varbox->generic.column = 0;
	    ed->valbox = ctrl_editbox(s, "Value", 'l', 60,
				      HELPCTX(telnet_environ),
				      environ_handler, P(ed), P(NULL));
	    ed->valbox->generic.column = 0;
	    ed->addbutton = ctrl_pushbutton(s, "Add", 'd',
					    HELPCTX(telnet_environ),
					    environ_handler, P(ed));
	    ed->addbutton->generic.column = 1;
	    ed->rembutton = ctrl_pushbutton(s, "Remove", 'r',
					    HELPCTX(telnet_environ),
					    environ_handler, P(ed));
	    ed->rembutton->generic.column = 1;
	    ctrl_columns(s, 1, 100);
	    ed->listbox = ctrl_listbox(s, NULL, NO_SHORTCUT,
				       HELPCTX(telnet_environ),