Adding a new option, 'B' to app_chanspy. This option allows the spy to

barge on the call. It is like the existing whisper option, except that
it allows the spy to talk to both sides of the conversation on which
he is spying.

This feature has existed in Switchvox, and this merges the functionality
into Asterisk.

(AST-32)



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@114678 65c4cc65-6c06-0410-ace0-fbb531ad65f3

CHANGES

@@ -33,6 +33,9 @@ Application Changes
  * ChanSpy and ExtenSpy have a new option, 's' which suppresses speaking the
    technology name (e.g. SIP, IAX, etc) of the channel being spied on.
  * The Jack application now has a c() option to supply a custom client name.
+ * Chanspy has a new option, 'B', which can be used to "barge" on a call. This is
+   like the pre-existing whisper mode, except that the spy can also talk to the
+   participant on the bridged channel as well.
 
 SIP Changes
 -----------

apps/app_chanspy.c

@@ -148,6 +148,7 @@ enum {
 	OPTION_EXIT      = (1 << 8),    /* Exit to a valid single digit extension */
 	OPTION_ENFORCED  = (1 << 9),    /* Enforced mode */
 	OPTION_NOTECH    = (1 << 10),   /* Skip technology name playback */
+	OPTION_BARGE     = (1 << 11),   /* Barge mode (whisper to both channels) */
 } chanspy_opt_flags;
 
 enum {
@@ -161,6 +162,7 @@ enum {
 AST_APP_OPTIONS(spy_opts, {
 	AST_APP_OPTION('q', OPTION_QUIET),
 	AST_APP_OPTION('b', OPTION_BRIDGED),
+	AST_APP_OPTION('B', OPTION_BARGE),
 	AST_APP_OPTION('w', OPTION_WHISPER),
 	AST_APP_OPTION('W', OPTION_PRIVATE),
 	AST_APP_OPTION_ARG('v', OPTION_VOLUME, OPT_ARG_VOLUME),
@@ -177,6 +179,7 @@ struct chanspy_translation_helper {
 	/* spy data */
 	struct ast_audiohook spy_audiohook;
 	struct ast_audiohook whisper_audiohook;
+	struct ast_audiohook bridge_whisper_audiohook;
 	int fd;
 	int volfactor;
 };
@@ -230,7 +233,7 @@ static struct ast_generator spygen = {
 	.generate = spy_generate,
 };
 
-static int start_spying(struct ast_channel *chan, const char *spychan_name, struct ast_audiohook *audiohook) 
+static int start_spying(struct ast_channel *chan, const char *spychan_name, struct ast_audiohook *audiohook)
 {
 	int res = 0;
 	struct ast_channel *peer = NULL;
@@ -296,10 +299,15 @@ static int channel_spy(struct ast_channel *chan, struct chanspy_ds *spyee_chansp
 		return 0;
 	}
 
-	if (ast_test_flag(flags, OPTION_WHISPER)) {
+	if (ast_test_flag(flags, OPTION_BARGE)) {
+  		ast_audiohook_init(&csth.whisper_audiohook, AST_AUDIOHOOK_TYPE_WHISPER, "ChanSpy");
+		ast_audiohook_init(&csth.bridge_whisper_audiohook, AST_AUDIOHOOK_TYPE_WHISPER, "Chanspy");
+  		start_spying(spyee, spyer_name, &csth.whisper_audiohook); /* Unlocks spyee */
+		start_spying(ast_bridged_channel(spyee), spyer_name, &csth.bridge_whisper_audiohook);
+	} else if (ast_test_flag(flags, OPTION_WHISPER)) {
 		ast_audiohook_init(&csth.whisper_audiohook, AST_AUDIOHOOK_TYPE_WHISPER, "ChanSpy");
-		start_spying(spyee, spyer_name, &csth.whisper_audiohook);
-	}
+		start_spying(spyee, spyer_name, &csth.whisper_audiohook); /* Unlocks spyee */
+  	}
 
 	ast_channel_unlock(spyee);
 	spyee = NULL;
@@ -338,7 +346,16 @@ static int channel_spy(struct ast_channel *chan, struct chanspy_ds *spyee_chansp
 			break;
 		}
 
-		if (ast_test_flag(flags, OPTION_WHISPER) && f->frametype == AST_FRAME_VOICE) {
+		if (ast_test_flag(flags, OPTION_BARGE) && f->frametype == AST_FRAME_VOICE) {
+			ast_audiohook_lock(&csth.whisper_audiohook);
+			ast_audiohook_lock(&csth.bridge_whisper_audiohook);
+			ast_audiohook_write_frame(&csth.whisper_audiohook, AST_AUDIOHOOK_DIRECTION_WRITE, f);
+			ast_audiohook_write_frame(&csth.bridge_whisper_audiohook, AST_AUDIOHOOK_DIRECTION_WRITE, f);
+			ast_audiohook_unlock(&csth.whisper_audiohook);
+			ast_audiohook_unlock(&csth.bridge_whisper_audiohook);
+			ast_frfree(f);
+			continue;
+		} else if (ast_test_flag(flags, OPTION_WHISPER) && f->frametype == AST_FRAME_VOICE) {
 			ast_audiohook_lock(&csth.whisper_audiohook);
 			ast_audiohook_write_frame(&csth.whisper_audiohook, AST_AUDIOHOOK_DIRECTION_WRITE, f);
 			ast_audiohook_unlock(&csth.whisper_audiohook);
@@ -400,7 +417,16 @@ static int channel_spy(struct ast_channel *chan, struct chanspy_ds *spyee_chansp
 	else
 		ast_deactivate_generator(chan);
 
-	if (ast_test_flag(flags, OPTION_WHISPER)) {
+	if (ast_test_flag(flags, OPTION_BARGE)) {
+		ast_audiohook_lock(&csth.whisper_audiohook);
+		ast_audiohook_detach(&csth.whisper_audiohook);
+		ast_audiohook_unlock(&csth.whisper_audiohook);
+		ast_audiohook_destroy(&csth.whisper_audiohook);
+		ast_audiohook_lock(&csth.bridge_whisper_audiohook);
+		ast_audiohook_detach(&csth.bridge_whisper_audiohook);
+		ast_audiohook_unlock(&csth.bridge_whisper_audiohook);
+		ast_audiohook_destroy(&csth.bridge_whisper_audiohook);
+	} else if (ast_test_flag(flags, OPTION_WHISPER)) {
 		ast_audiohook_lock(&csth.whisper_audiohook);
 		ast_audiohook_detach(&csth.whisper_audiohook);
 		ast_audiohook_unlock(&csth.whisper_audiohook);