From f5a7735f21f0f68a7a4368bfc941814528c718a3 Mon Sep 17 00:00:00 2001
From: Richard Fuchs <rfuchs@sipwise.com>
Date: Wed, 6 Apr 2022 14:56:42 -0400
Subject: [PATCH] TT#170203 add support for REFER

Also take this opportunity to renumber the method codes for easier
maintenance.

Change-Id: I8e7998deb2e2998eb308121ad94e6d68c9eae5b0
---
 cdr.c      | 4 ++++
 cdr.h      | 1 +
 mediator.h | 7 ++++---
 medredis.c | 5 +++--
 4 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/cdr.c b/cdr.c
index de018ca..4232c0f 100644
--- a/cdr.c
+++ b/cdr.c
@@ -1629,6 +1629,10 @@ void cdr_parse_entry(med_entry_t *e)
     {
         e->method = MED_BYE;
     }
+    else if (strcmp(e->sip_method, MSG_REFER) == 0)
+    {
+        e->method = MED_REFER;
+    }
     else
     {
         e->method = MED_UNRECOGNIZED;
diff --git a/cdr.h b/cdr.h
index 85d5c03..595580e 100644
--- a/cdr.h
+++ b/cdr.h
@@ -5,6 +5,7 @@
 
 #define MSG_INVITE "INVITE"
 #define MSG_BYE    "BYE"
+#define MSG_REFER  "REFER"
 
 #define CDR_STATUS_OK       "ok"
 #define CDR_STATUS_BUSY     "busy"
diff --git a/mediator.h b/mediator.h
index c2137da..fa94215 100644
--- a/mediator.h
+++ b/mediator.h
@@ -69,9 +69,10 @@ extern int mediator_lockfd;
 extern sig_atomic_t mediator_shutdown;
 
 typedef enum {
-    MED_INVITE = 1,
-    MED_BYE = 2,
-    MED_UNRECOGNIZED = 3
+    MED_UNRECOGNIZED = 0,
+    MED_INVITE,
+    MED_BYE,
+    MED_REFER,
 } med_method_t;
 
 
diff --git a/medredis.c b/medredis.c
index 56927eb..b370e27 100644
--- a/medredis.c
+++ b/medredis.c
@@ -273,12 +273,13 @@ static int medredis_remove_mappings(const char* cid, char* key, const char *meth
     }
 
     // delete cid from acc:meth::$METHOD and handle acc::index::meth mappings
-    char *methods[2];
+    char *methods[3];
     int num_methods;
     if (!method || !method[0]) {
         methods[0] = "acc:meth::INVITE";
         methods[1] = "acc:meth::BYE";
-        num_methods = 2;
+        methods[2] = "acc:meth::REFER";
+        num_methods = 3;
     }
     else {
         method_key = g_strdup_printf("acc:meth::%s", method);