Added verify for last received stanza

src/server/stanza.c

@@ -164,6 +164,107 @@ stanza_get_id(XMPPStanza *stanza)
     return NULL;
 }
 
+static int
+_xmpp_attr_equal(XMPPAttr *attr1, XMPPAttr *attr2)
+{
+    if (g_strcmp0(attr1->name, attr2->name) != 0) {
+        return -1;
+    }
+
+    if (g_strcmp0(attr1->value, attr2->value) != 0) {
+        return -1;
+    }
+
+    return 0;
+}
+
+static int
+_stanzas_equal(XMPPStanza *first, XMPPStanza *second)
+{
+    // check name
+    if (g_strcmp0(first->name, second->name) != 0) {
+        return -1;
+    }
+
+    // check attribute count
+    if (g_list_length(first->attrs) != g_list_length(second->attrs)) {
+        return -1;
+    }
+
+    // check children count
+    if (g_list_length(first->children) != g_list_length(second->children)) {
+        return -1;
+    }
+
+    // check presence of content
+    if (!first->content && second->content) {
+        return -1;
+    }
+    if (first->content && !second->content) {
+        return -1;
+    }
+
+    // check content is exists
+    if (first->content) {
+        if (g_strcmp0(first->content->str, second->content->str) != 0) {
+            return -1;
+        }
+    }
+
+    // check attributes
+    if (first->attrs) {
+        GList *first_curr_attr = first->attrs;
+        while (first_curr_attr) {
+            XMPPAttr *first_attr = (XMPPAttr *)first_curr_attr->data;
+
+            GList *second_found_attr = g_list_find_custom(second->attrs, first_attr, (GCompareFunc)_xmpp_attr_equal);
+            if (!second_found_attr) {
+                return -1;
+            }
+
+            first_curr_attr = g_list_next(first_curr_attr);
+        }
+    }
+
+    // check children
+    if (first->children) {
+        GList *first_curr_child = first->children;
+        while (first_curr_child) {
+            XMPPStanza *first_child = (XMPPStanza *)first_curr_child->data;
+            GList *second_found_child = g_list_find_custom(second->children, first_child, (GCompareFunc)_stanzas_equal);
+            if (!second_found_child) {
+                return -1;
+            }
+
+            first_curr_child = g_list_next(first_curr_child);
+        }
+    }
+
+    return 0;
+}
+
+int
+stanza_verify_last(XMPPStanza *stanza)
+{
+    if (!stanzas) {
+        return 0;
+    }
+
+    GList *last = g_list_last(stanzas);
+    if (!last) {
+        return 0;
+    }
+
+    XMPPStanza *last_stanza = (XMPPStanza *)last->data;
+
+    int res = _stanzas_equal(stanza, last_stanza);
+    if (res == 0) {
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
 static void
 _attrs_free(XMPPAttr *attr)
 {
@@ -174,8 +275,8 @@ _attrs_free(XMPPAttr *attr)
     }
 }
 
-static void
-_stanza_free(XMPPStanza *stanza)
+void
+stanza_free(XMPPStanza *stanza)
 {
     if (stanza) {
         free(stanza->name);
@@ -183,7 +284,7 @@ _stanza_free(XMPPStanza *stanza)
             g_string_free(stanza->content, TRUE);
         }
         g_list_free_full(stanza->attrs, (GDestroyNotify)_attrs_free);
-        g_list_free_full(stanza->children, (GDestroyNotify)_stanza_free);
+        g_list_free_full(stanza->children, (GDestroyNotify)stanza_free);
         free(stanza);
     }
 }
@@ -191,6 +292,6 @@ _stanza_free(XMPPStanza *stanza)
 void
 stanza_free_all(void)
 {
-    g_list_free_full(stanzas, (GDestroyNotify)_stanza_free);
+    g_list_free_full(stanzas, (GDestroyNotify)stanza_free);
     stanzas = NULL;
 }