Support option modem "speaker" (WAV file playback) control via ATM1 (turn on)

Support optional WAV files via .ini keys:
RingSound
ConnectSound
DisconnectSound

ATM0 turns "speaker" (WAV playback) off (the default), ATM1 turns on.

Ignore ATLn (speaker level), ATT (tone) and ATP (pulse) commands. These are
sometimes found in init strings which we don't want to prematurely fail with
a parse failure and "ERROR" result.

Increment version number to 0.2.

src/vdmodem/vdmodem.c

@@ -27,6 +27,7 @@
 #define NOGDI
 #include <windows.h>
 #include <process.h>
+#include <mmsystem.h>	/* SND_ASYNC */
 
 #include "genwrap.h"
 #include "findstr.h"
@@ -40,7 +41,7 @@
 #include "git_hash.h"
 
 #define TITLE "Synchronet Virtual DOS Modem for Windows"
-#define VERSION "0.1"
+#define VERSION "0.2"
 
 bool external_socket;
 union xp_sockaddr addr;
@@ -80,6 +81,9 @@ struct {
 	bool server_binary;
 	char client_file[MAX_PATH + 1];
 	char ip_filter_file[MAX_PATH + 1];
+	char ring_sound[MAX_PATH + 1];
+	char connect_sound[MAX_PATH + 1];
+	char disconnect_sound[MAX_PATH + 1];
 	char busy_notice[INI_MAX_VALUE_LEN];
 	char answer_banner[INI_MAX_VALUE_LEN];
 	enum {
@@ -145,6 +149,7 @@ struct modem {
 	bool online; // false means "command mode"
 	bool caller_id;
 	bool ringing;
+	bool speaker;
 	ulong ringcount;
 	ulong auto_answer;
 	ulong dial_wait;
@@ -257,6 +262,8 @@ char* connect_result(struct modem* modem)
 
 char* connected(struct modem* modem)
 {
+	if(modem->speaker && cfg.connect_sound[0])
+		PlaySound(cfg.connect_sound, NULL, SND_ASYNC|SND_FILENAME);
 	modem->online = true;
 	modem->ringing = false;
 	ResetEvent(hangup_event);
@@ -267,6 +274,8 @@ char* connected(struct modem* modem)
 
 void disconnect(struct modem* modem)
 {
+	if(modem->speaker && cfg.disconnect_sound[0])
+		PlaySound(cfg.disconnect_sound, NULL, SND_ASYNC|SND_FILENAME);
 	modem->online = false;
 	if(!external_socket) {
 		shutdown(sock, SD_SEND);
@@ -295,6 +304,7 @@ const char* iniKeyAutoAnswer = "AutoAnswer";
 const char* iniKeyEcho = "Echo";
 const char* iniKeyQuiet = "Quiet";
 const char* iniKeyNumeric = "Numeric";
+const char* iniKeySpeaker = "Speaker";
 const char* iniKeyCR = "CR";
 const char* iniKeyLF = "LF";
 const char* iniKeyBS = "BS";
@@ -311,6 +321,7 @@ void init(struct modem* modem)
 	modem->auto_answer = iniGetBool(ini, section, iniKeyAutoAnswer, FALSE);
 	modem->echo_off = !iniGetBool(ini, section, iniKeyEcho, TRUE);
 	modem->quiet = iniGetBool(ini, section, iniKeyQuiet, FALSE);
+	modem->speaker = iniGetBool(ini, section, iniKeySpeaker, FALSE);
 	modem->numeric_mode = iniGetBool(ini, section, iniKeyNumeric, FALSE);
 	modem->caller_id = iniGetBool(ini, section, iniKeyCallerID, FALSE);
 	modem->cr = (char)iniGetInteger(ini, section,  iniKeyCR, '\r');
@@ -330,6 +341,7 @@ bool write_cfg(struct modem* modem)
 	iniSetBool(&ini, section, iniKeyAutoAnswer, modem->auto_answer, style);
 	iniSetBool(&ini, section, iniKeyEcho, !modem->echo_off, style);
 	iniSetBool(&ini, section, iniKeyQuiet, modem->quiet, style);
+	iniSetBool(&ini, section, iniKeySpeaker, modem->speaker, style);
 	iniSetBool(&ini, section, iniKeyNumeric, modem->numeric_mode, style);
 	iniSetBool(&ini, section, iniKeyCallerID, modem->caller_id, style);
 	iniSetInteger(&ini, section, iniKeyCR, modem->cr, style);
@@ -832,6 +844,11 @@ char* atmodem_exec(struct modem* modem)
 						return error(modem);
 				}
 				return respbuf;
+			case 'L': /* Speaker volume */
+				break;
+			case 'M':
+				modem->speaker = val;
+				break;
 			case 'O':
 				if(sock == INVALID_SOCKET)
 					return error(modem);
@@ -917,6 +934,10 @@ char* atmodem_exec(struct modem* modem)
 				} else
 					return error(modem);
 				break;
+			case 'P': /* Pulse */
+				break;
+			case 'T': /* Tone */
+				break;
 			case 'X':
 				modem->ext_results = val;
 				break;
@@ -1069,6 +1090,12 @@ bool read_ini(const char* ini_fname)
 		SAFECOPY(cfg.client_file, p);
 	if((p = iniGetString(ini, ROOT_SECTION, "IpFilterFile", NULL, value)) != NULL)
 		SAFECOPY(cfg.ip_filter_file, p);
+	if((p = iniGetString(ini, ROOT_SECTION, "RingSound", NULL, value)) != NULL)
+		SAFECOPY(cfg.ring_sound, p);
+	if((p = iniGetString(ini, ROOT_SECTION, "ConnectSound", NULL, value)) != NULL)
+		SAFECOPY(cfg.connect_sound, p);
+	if((p = iniGetString(ini, ROOT_SECTION, "DisconnectSound", NULL, value)) != NULL)
+		SAFECOPY(cfg.disconnect_sound, p);
 	return true;
 }
 
@@ -1376,6 +1403,8 @@ int main(int argc, char** argv)
 					dprintf("Incoming connection");
 				if(now - lastring > RING_DELAY) {
 					dprintf("RING");
+					if(modem.speaker && cfg.ring_sound[0])
+						PlaySound(cfg.ring_sound, NULL, SND_ASYNC|SND_FILENAME);
 					vdd_writestr(&wrslot, response(&modem, RING));
 					lastring = now;
 					modem.ringcount++;

src/vdmodem/vdmodem.vcxproj

@@ -105,6 +105,7 @@
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>netapi32.lib;ws2_32.lib;IPHlpApi.Lib;winmm.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
     <PreBuildEvent>
       <Command>..\build\gitinfo.bat</Command>
@@ -125,6 +126,7 @@
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>netapi32.lib;ws2_32.lib;IPHlpApi.Lib;winmm.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
     <PreBuildEvent>
       <Command>..\build\gitinfo.bat</Command>