Support for Windows PuTTY connecting straight to a local serial port

[u/mdw/putty] / sercfg.c

/*\r
 * sercfg.c - the serial-port specific parts of the PuTTY\r
 * configuration box. Centralised as cross-platform code because\r
 * more than one platform will want to use it, but not part of the\r
 * main configuration. The expectation is that each platform's\r
 * local config function will call out to ser_setup_config_box() if\r
 * it needs to set up the standard serial stuff. (Of course, it can\r
 * then apply local tweaks after ser_setup_config_box() returns, if\r
 * it needs to.)\r
 */\r
\r
#include <assert.h>\r
#include <stdlib.h>\r
\r
#include "putty.h"\r
#include "dialog.h"\r
#include "storage.h"\r
\r
static void serial_parity_handler(union control *ctrl, void *dlg,\r
				  void *data, int event)\r
{\r
    static const struct {\r
	const char *name;\r
	int val;\r
    } parities[] = {\r
	{"None", SER_PAR_NONE},\r
	{"Odd", SER_PAR_ODD},\r
	{"Even", SER_PAR_EVEN},\r
	{"Mark", SER_PAR_MARK},\r
	{"Space", SER_PAR_SPACE},\r
    };\r
    int i;\r
    Config *cfg = (Config *)data;\r
\r
    if (event == EVENT_REFRESH) {\r
	dlg_update_start(ctrl, dlg);\r
	dlg_listbox_clear(ctrl, dlg);\r
	for (i = 0; i < lenof(parities); i++)\r
	    dlg_listbox_addwithid(ctrl, dlg, parities[i].name,\r
				  parities[i].val);\r
	for (i = 0; i < lenof(parities); i++)\r
	    if (cfg->serparity == parities[i].val)\r
		dlg_listbox_select(ctrl, dlg, i);\r
	dlg_update_done(ctrl, dlg);\r
    } else if (event == EVENT_SELCHANGE) {\r
	int i = dlg_listbox_index(ctrl, dlg);\r
	if (i < 0)\r
	    i = SER_PAR_NONE;\r
	else\r
	    i = dlg_listbox_getid(ctrl, dlg, i);\r
	cfg->serparity = i;\r
    }\r
}\r
\r
static void serial_flow_handler(union control *ctrl, void *dlg,\r
				void *data, int event)\r
{\r
    static const struct {\r
	const char *name;\r
	int val;\r
    } flows[] = {\r
	{"None", SER_FLOW_NONE},\r
	{"XON/XOFF", SER_FLOW_XONXOFF},\r
	{"RTS/CTS", SER_FLOW_RTSCTS},\r
	{"DSR/DTR", SER_FLOW_DSRDTR},\r
    };\r
    int i;\r
    Config *cfg = (Config *)data;\r
\r
    if (event == EVENT_REFRESH) {\r
	dlg_update_start(ctrl, dlg);\r
	dlg_listbox_clear(ctrl, dlg);\r
	for (i = 0; i < lenof(flows); i++)\r
	    dlg_listbox_addwithid(ctrl, dlg, flows[i].name,\r
				  flows[i].val);\r
	for (i = 0; i < lenof(flows); i++)\r
	    if (cfg->serflow == flows[i].val)\r
		dlg_listbox_select(ctrl, dlg, i);\r
	dlg_update_done(ctrl, dlg);\r
    } else if (event == EVENT_SELCHANGE) {\r
	int i = dlg_listbox_index(ctrl, dlg);\r
	if (i < 0)\r
	    i = SER_PAR_NONE;\r
	else\r
	    i = dlg_listbox_getid(ctrl, dlg, i);\r
	cfg->serflow = i;\r
    }\r
}\r
\r
void ser_setup_config_box(struct controlbox *b, int midsession)\r
{\r
    struct controlset *s;\r
    union control *c;\r
\r
    /*\r
     * Add the serial back end to the protocols list at the top of\r
     * the config box.\r
     */\r
    s = ctrl_getset(b, "Session", "hostport",\r
		    "Specify your connection by host name or IP address");\r
    {\r
	int i;\r
	extern void config_protocolbuttons_handler(union control *, void *,\r
						   void *, int);\r
        for (i = 0; i < s->ncontrols; i++) {\r
            c = s->ctrls[i];\r
	    if (c->generic.type == CTRL_RADIO &&\r
		c->generic.handler == config_protocolbuttons_handler) {\r
		c->radio.nbuttons++;\r
		c->radio.ncolumns++;\r
		c->radio.buttons =\r
		    sresize(c->radio.buttons, c->radio.nbuttons, char *);\r
		c->radio.buttons[c->radio.nbuttons-1] =\r
		    dupstr("Serial");\r
		c->radio.buttondata =\r
		    sresize(c->radio.buttondata, c->radio.nbuttons, intorptr);\r
		c->radio.buttondata[c->radio.nbuttons-1] = I(PROT_SERIAL);\r
		if (c->radio.shortcuts) {\r
		    c->radio.shortcuts =\r
			sresize(c->radio.shortcuts, c->radio.nbuttons, char);\r
		    c->radio.shortcuts[c->radio.nbuttons-1] = NO_SHORTCUT;\r
		}\r
	    }\r
	}\r
    }\r
\r
    /*\r
     * Entirely new Connection/Serial panel for serial port\r
     * configuration.\r
     */\r
    ctrl_settitle(b, "Connection/Serial",\r
		  "Options controlling local serial lines");\r
\r
    if (!midsession) {\r
	/*\r
	 * We don't permit switching to a different serial port in\r
	 * midflight, although we do allow all other\r
	 * reconfiguration.\r
	 */\r
	s = ctrl_getset(b, "Connection/Serial", "serline",\r
			"Select a serial line");\r
	ctrl_editbox(s, "Serial line to connect to", 'l', 40,\r
		     HELPCTX(serial_line),\r
		     dlg_stdeditbox_handler, I(offsetof(Config,serline)),\r
		     I(sizeof(((Config *)0)->serline)));\r
    }\r
\r
    s = ctrl_getset(b, "Connection/Serial", "sercfg", "Configure the serial line");\r
    ctrl_editbox(s, "Speed (baud)", 's', 40,\r
		 HELPCTX(serial_speed),\r
		 dlg_stdeditbox_handler, I(offsetof(Config,serspeed)), I(-1));\r
    ctrl_editbox(s, "Data bits", 'b', 40,\r
		 HELPCTX(serial_databits),\r
		 dlg_stdeditbox_handler,I(offsetof(Config,serdatabits)),I(-1));\r
    /*\r
     * Stop bits come in units of one half.\r
     */\r
    ctrl_editbox(s, "Stop bits", 't', 40,\r
		 HELPCTX(serial_stopbits),\r
		 dlg_stdeditbox_handler,I(offsetof(Config,serstopbits)),I(-2));\r
    ctrl_droplist(s, "Parity", 'p', 40,\r
		  HELPCTX(serial_parity),\r
		  serial_parity_handler, I(0));\r
    ctrl_droplist(s, "Flow control", 'f', 40,\r
		  HELPCTX(serial_flow),\r
		  serial_flow_handler, I(0));\r
}\r