go vendor

vendor/github.com/revel/modules/auth/casbin/README.md

@@ -0,0 +1,53 @@
+modules/casbin
+======
+
+Casbin authz is an authorization middleware for [Revel](https://github.com/revel/revel), it's based on [https://github.com/casbin/casbin](https://github.com/casbin/casbin).
+
+## Simple Example
+
+```Go
+package main
+
+import (
+	"net/http"
+	"net/http/httptest"
+
+	"github.com/casbin/casbin"
+	"github.com/revel/revel"
+	"github.com/revel/modules/auth/casbin"
+)
+
+var adapter = casbinauth.NewAdapter(params)
+var enforcer = casbin.NewEnforcer("authz_model.conf", adapter)
+var casbinModule = casbinauth.NewCasbinModule(enforcer)
+
+var testFilters = []revel.Filter{
+	casbinModule.AuthzFilter,
+	func(c *revel.Controller, fc []revel.Filter) {
+		c.RenderHTML("OK.")
+	},
+}
+
+func main() {
+	r, _ := http.NewRequest("GET", "/dataset1/resource1", nil)
+    	r.SetBasicAuth("alice", "123")
+    	w := httptest.NewRecorder()
+    	context := revel.NewGoContext(nil)
+    	context.Request.SetRequest(r)
+    	context.Response.SetResponse(w)
+    	c := revel.NewController(context)
+    
+    	testFilters[0](c, testFilters)
+}
+```
+
+## Documentation
+
+The authorization determines a request based on ``{subject, object, action}``, which means what ``subject`` can perform what ``action`` on what ``object``. In this plugin, the meanings are:
+
+1. ``subject``: the logged-on user name
+2. ``object``: the URL path for the web resource like "dataset1/item1"
+3. ``action``: HTTP method like GET, POST, PUT, DELETE, or the high-level actions you defined like "read-file", "write-blog"
+
+
+For how to write authorization policy and other details, please refer to [the Casbin's documentation](https://github.com/casbin/casbin).