Refactor routers directory (#15800)

* refactor routers directory

* move func used for web and api to common

* make corsHandler a function to prohibit side efects

* rm unused func

Co-authored-by: 6543 <6543@obermui.de>

routers/web/user/setting/security_u2f.go

@@ -0,0 +1,111 @@
+// Copyright 2018 The Gitea 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 setting
+
+import (
+	"errors"
+	"net/http"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/context"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/web"
+	"code.gitea.io/gitea/services/forms"
+
+	"github.com/tstranex/u2f"
+)
+
+// U2FRegister initializes the u2f registration procedure
+func U2FRegister(ctx *context.Context) {
+	form := web.GetForm(ctx).(*forms.U2FRegistrationForm)
+	if form.Name == "" {
+		ctx.Error(http.StatusConflict)
+		return
+	}
+	challenge, err := u2f.NewChallenge(setting.U2F.AppID, setting.U2F.TrustedFacets)
+	if err != nil {
+		ctx.ServerError("NewChallenge", err)
+		return
+	}
+	if err := ctx.Session.Set("u2fChallenge", challenge); err != nil {
+		ctx.ServerError("Unable to set session key for u2fChallenge", err)
+		return
+	}
+	regs, err := models.GetU2FRegistrationsByUID(ctx.User.ID)
+	if err != nil {
+		ctx.ServerError("GetU2FRegistrationsByUID", err)
+		return
+	}
+	for _, reg := range regs {
+		if reg.Name == form.Name {
+			ctx.Error(http.StatusConflict, "Name already taken")
+			return
+		}
+	}
+	if err := ctx.Session.Set("u2fName", form.Name); err != nil {
+		ctx.ServerError("Unable to set session key for u2fName", err)
+		return
+	}
+	// Here we're just going to try to release the session early
+	if err := ctx.Session.Release(); err != nil {
+		// we'll tolerate errors here as they *should* get saved elsewhere
+		log.Error("Unable to save changes to the session: %v", err)
+	}
+	ctx.JSON(http.StatusOK, u2f.NewWebRegisterRequest(challenge, regs.ToRegistrations()))
+}
+
+// U2FRegisterPost receives the response of the security key
+func U2FRegisterPost(ctx *context.Context) {
+	response := web.GetForm(ctx).(*u2f.RegisterResponse)
+	challSess := ctx.Session.Get("u2fChallenge")
+	u2fName := ctx.Session.Get("u2fName")
+	if challSess == nil || u2fName == nil {
+		ctx.ServerError("U2FRegisterPost", errors.New("not in U2F session"))
+		return
+	}
+	challenge := challSess.(*u2f.Challenge)
+	name := u2fName.(string)
+	config := &u2f.Config{
+		// Chrome 66+ doesn't return the device's attestation
+		// certificate by default.
+		SkipAttestationVerify: true,
+	}
+	reg, err := u2f.Register(*response, *challenge, config)
+	if err != nil {
+		ctx.ServerError("u2f.Register", err)
+		return
+	}
+	if _, err = models.CreateRegistration(ctx.User, name, reg); err != nil {
+		ctx.ServerError("u2f.Register", err)
+		return
+	}
+	ctx.Status(200)
+}
+
+// U2FDelete deletes an security key by id
+func U2FDelete(ctx *context.Context) {
+	form := web.GetForm(ctx).(*forms.U2FDeleteForm)
+	reg, err := models.GetU2FRegistrationByID(form.ID)
+	if err != nil {
+		if models.IsErrU2FRegistrationNotExist(err) {
+			ctx.Status(200)
+			return
+		}
+		ctx.ServerError("GetU2FRegistrationByID", err)
+		return
+	}
+	if reg.UserID != ctx.User.ID {
+		ctx.Status(401)
+		return
+	}
+	if err := models.DeleteRegistration(reg); err != nil {
+		ctx.ServerError("DeleteRegistration", err)
+		return
+	}
+	ctx.JSON(http.StatusOK, map[string]interface{}{
+		"redirect": setting.AppSubURL + "/user/settings/security",
+	})
+}