New function: uh_register_default_hook

Signed-off-by: Jianhui Zhao <jianhuizhao329@gmail.com>

src/include/internal.h

@@ -37,6 +37,7 @@ struct uh_server {
 #endif
     ev_io read_watcher;
     struct ev_loop *loop;
+    uh_hookfn_t default_cb;
     struct list_head hooks;
     struct list_head connections;
 };

src/include/uhttp/uhttp.h

@@ -80,6 +80,12 @@ int uh_printf_chunk(struct uh_connection *con, const char *fmt, ...);
 /* Registers a callback to be executed on a specific path */
 int uh_register_hook(struct uh_server *srv, const char *path, uh_hookfn_t cb);
 
+/*
+ * Registers a callback to be executed when don't find a callback function
+ * that is specific to a path.
+ */
+void uh_register_default_hook(struct uh_server *srv, uh_hookfn_t cb);
+
 struct uh_str *uh_get_url(struct uh_connection *con);
 struct uh_str *uh_get_path(struct uh_connection *con);
 struct uh_str *uh_get_query(struct uh_connection *con);

src/uhttp.c

@@ -188,6 +188,11 @@ static int on_message_complete(http_parser *parser)
         }
     }
 
+    if (con->srv->default_cb) {
+        con->srv->default_cb(con);
+        return 0;
+    }
+
     uh_send_error(con, HTTP_STATUS_NOT_FOUND, NULL);
 
     return 0;
@@ -539,6 +544,11 @@ int uh_register_hook(struct uh_server *srv, const char *path, uh_hookfn_t cb)
     return 0;   
 }
 
+void uh_register_default_hook(struct uh_server *srv, uh_hookfn_t cb)
+{
+    srv->default_cb = cb;
+}
+
 inline struct uh_str *uh_get_url(struct uh_connection *con)
 {
     return &con->req.url;