Add HANGUPCAUSE hash support to IAX2

Continuing with the Who Hung Up? project for Asterisk 11, this adds
support to IAX2 for the HANGUPCAUSE hash.

Additionally, this breaks out some functionality in frame.c for getting
information about frame types and subclasses.

Review: https://reviewboard.asterisk.org/r/1941/
(issue SWP-4222)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@369007 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 56 insertions, 0 deletions

diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index 467cdb4e3..8f42bf385 100644
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -10135,6 +10135,62 @@ static int socket_process(struct iax2_thread *thread)
 	}
 #endif
 
+	if (iaxs[fr->callno]->owner && (fh->type == AST_FRAME_IAX || fh->type == AST_FRAME_CONTROL)) {
+		struct ast_control_pvt_cause_code *cause_code;
+		int data_size = sizeof(*cause_code);
+		char subclass[40] = "";
+
+		/* get subclass text */
+		if (fh->type == AST_FRAME_IAX) {
+			iax_frame_subclass2str(fh->csub, subclass, sizeof(subclass));
+		} else {
+			struct ast_frame tmp_frame = {0,};
+			tmp_frame.frametype = fh->type;
+			tmp_frame.subclass.integer = fh->csub;
+			ast_frame_subclass2str(&tmp_frame, subclass, sizeof(subclass), NULL, 0);
+		}
+
+		/* add length of "IAX2 " */
+		data_size += 5;
+		if (fh->type == AST_FRAME_CONTROL) {
+			/* add length of "Control " */
+			data_size += 8;
+		} else if (fh->csub == IAX_COMMAND_HANGUP
+			|| fh->csub == IAX_COMMAND_REJECT
+			|| fh->csub == IAX_COMMAND_REGREJ
+			|| fh->csub == IAX_COMMAND_TXREJ) {
+			/* for IAX hangup frames, add length of () and number */
+			data_size += 3;
+			if (ies.causecode > 9) {
+				data_size++;
+			}
+			if (ies.causecode > 99) {
+				data_size++;
+			}
+		}
+		/* add length of subclass */
+		data_size += strlen(subclass);
+
+		cause_code = alloca(data_size);
+		ast_copy_string(cause_code->chan_name, ast_channel_name(iaxs[fr->callno]->owner), AST_CHANNEL_NAME);
+
+		if (fh->type == AST_FRAME_IAX &&
+			(fh->csub == IAX_COMMAND_HANGUP
+			|| fh->csub == IAX_COMMAND_REJECT
+			|| fh->csub == IAX_COMMAND_REGREJ
+			|| fh->csub == IAX_COMMAND_TXREJ)) {
+			snprintf(cause_code->code, data_size - sizeof(*cause_code) + 1, "IAX2 %s(%d)", subclass, ies.causecode);
+		} else {
+			snprintf(cause_code->code, data_size - sizeof(*cause_code) + 1, "IAX2 %s%s", (fh->type == AST_FRAME_CONTROL ? "Control " : ""), subclass);
+		}
+
+		iax2_queue_control_data(fr->callno, AST_CONTROL_PVT_CAUSE_CODE, cause_code, data_size);
+		if (!iaxs[fr->callno]) {
+			ast_variables_destroy(ies.vars);
+			ast_mutex_unlock(&iaxsl[fr->callno]);
+			return 1;
+		}
+	}
 
 	/* count this frame */
 	iaxs[fr->callno]->frames_received++;