3 files changed, 15 insertions, 0 deletions
diff --git a/src/rexmpp.c b/src/rexmpp.c
index 02dcf5b..c4c1e1c 100644
--- a/src/rexmpp.c
+++ b/src/rexmpp.c
@@ -268,6 +268,7 @@ rexmpp_err_t rexmpp_init (rexmpp_t *s, const char *jid)
   s->sasl_property_cb = NULL;
   s->xml_in_cb = NULL;
   s->xml_out_cb = NULL;
+  s->roster_modify_cb = NULL;
   s->ping_delay = 600;
   s->ping_requested = 0;
   s->last_network_activity = 0;
diff --git a/src/rexmpp.h b/src/rexmpp.h
index 9f748cf..6157f86 100644
--- a/src/rexmpp.h
+++ b/src/rexmpp.h
@@ -202,6 +202,7 @@ typedef void (*log_function_t) (rexmpp_t *s, int priority, const char *format, v
 typedef int (*sasl_property_cb_t) (rexmpp_t *s, Gsasl_property prop);
 typedef int (*xml_in_cb_t) (rexmpp_t *s, xmlNodePtr node);
 typedef int (*xml_out_cb_t) (rexmpp_t *s, xmlNodePtr node);
+typedef void (*roster_modify_cb_t) (rexmpp_t *s, xmlNodePtr item);
 
 /** @brief Complete connection state */
 struct rexmpp
@@ -248,6 +249,7 @@ struct rexmpp
   sasl_property_cb_t sasl_property_cb;
   xml_in_cb_t xml_in_cb;
   xml_out_cb_t xml_out_cb;
+  roster_modify_cb_t roster_modify_cb;
 
   /* Stream-related state. */
   char *assigned_jid;
diff --git a/src/rexmpp_roster.c b/src/rexmpp_roster.c
index 8479c14..3d62613 100644
--- a/src/rexmpp_roster.c
+++ b/src/rexmpp_roster.c
@@ -81,6 +81,9 @@ rexmpp_err_t rexmpp_modify_roster (rexmpp_t *s, xmlNodePtr item) {
   if (subscription != NULL) {
     free(subscription);
   }
+  if (s->roster_modify_cb != NULL) {
+    s->roster_modify_cb(s, item);
+  }
   return ret;
 }
 
@@ -93,6 +96,15 @@ void rexmpp_roster_set (rexmpp_t *s, xmlNodePtr query) {
   }
   s->roster_ver = xmlGetProp(query, "ver");
   s->roster_items = xmlCopyNodeList(xmlFirstElementChild(query));
+  if (s->roster_modify_cb != NULL) {
+    xmlNodePtr item;
+    for (item = xmlFirstElementChild(query);
+         item != NULL;
+         item = xmlNextElementSibling(item))
+      {
+        s->roster_modify_cb(s, item);
+      }
+  }
 }
 
 void rexmpp_roster_cache_read (rexmpp_t *s) {