1 files changed, 112 insertions, 0 deletions
diff --git a/internal/context/auth.go b/internal/context/auth.go
new file mode 100644
index 00000000..cc6c804c
--- /dev/null
+++ b/internal/context/auth.go
@@ -0,0 +1,112 @@
+// Copyright 2014 The Gogs Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package context
+
+import (
+	"net/http"
+	"net/url"
+	"strings"
+
+	"github.com/go-macaron/csrf"
+	"gopkg.in/macaron.v1"
+
+	"gogs.io/gogs/internal/auth"
+	"gogs.io/gogs/internal/setting"
+	"gogs.io/gogs/internal/tool"
+)
+
+type ToggleOptions struct {
+	SignInRequired  bool
+	SignOutRequired bool
+	AdminRequired   bool
+	DisableCSRF     bool
+}
+
+func Toggle(options *ToggleOptions) macaron.Handler {
+	return func(c *Context) {
+		// Cannot view any page before installation.
+		if !setting.InstallLock {
+			c.Redirect(setting.AppSubURL + "/install")
+			return
+		}
+
+		// Check prohibit login users.
+		if c.IsLogged && c.User.ProhibitLogin {
+			c.Data["Title"] = c.Tr("auth.prohibit_login")
+			c.HTML(200, "user/auth/prohibit_login")
+			return
+		}
+
+		// Check non-logged users landing page.
+		if !c.IsLogged && c.Req.RequestURI == "/" && setting.LandingPageURL != setting.LANDING_PAGE_HOME {
+			c.Redirect(setting.AppSubURL + string(setting.LandingPageURL))
+			return
+		}
+
+		// Redirect to dashboard if user tries to visit any non-login page.
+		if options.SignOutRequired && c.IsLogged && c.Req.RequestURI != "/" {
+			c.Redirect(setting.AppSubURL + "/")
+			return
+		}
+
+		if !options.SignOutRequired && !options.DisableCSRF && c.Req.Method == "POST" && !auth.IsAPIPath(c.Req.URL.Path) {
+			csrf.Validate(c.Context, c.csrf)
+			if c.Written() {
+				return
+			}
+		}
+
+		if options.SignInRequired {
+			if !c.IsLogged {
+				// Restrict API calls with error message.
+				if auth.IsAPIPath(c.Req.URL.Path) {
+					c.JSON(403, map[string]string{
+						"message": "Only signed in user is allowed to call APIs.",
+					})
+					return
+				}
+
+				c.SetCookie("redirect_to", url.QueryEscape(setting.AppSubURL+c.Req.RequestURI), 0, setting.AppSubURL)
+				c.Redirect(setting.AppSubURL + "/user/login")
+				return
+			} else if !c.User.IsActive && setting.Service.RegisterEmailConfirm {
+				c.Data["Title"] = c.Tr("auth.active_your_account")
+				c.HTML(200, "user/auth/activate")
+				return
+			}
+		}
+
+		// Redirect to log in page if auto-signin info is provided and has not signed in.
+		if !options.SignOutRequired && !c.IsLogged && !auth.IsAPIPath(c.Req.URL.Path) &&
+			len(c.GetCookie(setting.CookieUserName)) > 0 {
+			c.SetCookie("redirect_to", url.QueryEscape(setting.AppSubURL+c.Req.RequestURI), 0, setting.AppSubURL)
+			c.Redirect(setting.AppSubURL + "/user/login")
+			return
+		}
+
+		if options.AdminRequired {
+			if !c.User.IsAdmin {
+				c.Error(403)
+				return
+			}
+			c.Data["PageIsAdmin"] = true
+		}
+	}
+}
+
+// RequireBasicAuth verifies HTTP Basic Authentication header with given credentials
+func (c *Context) RequireBasicAuth(username, password string) {
+	fields := strings.Fields(c.Req.Header.Get("Authorization"))
+	if len(fields) != 2 || fields[0] != "Basic" {
+		c.Status(http.StatusUnauthorized)
+		return
+	}
+
+	uname, passwd, _ := tool.BasicAuthDecode(fields[1])
+	if uname != username || passwd != password {
+		c.Status(http.StatusForbidden)
+		return
+	}
+}