forked from ory/oathkeeper
/
handler.go
268 lines (242 loc) · 6.28 KB
/
handler.go
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/*
* Copyright © 2017-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @author Aeneas Rekkas <aeneas+oss@aeneas.io>
* @copyright 2017-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
* @license Apache-2.0
*/
package rule
import (
"encoding/json"
"net/http"
"strings"
"github.com/julienschmidt/httprouter"
"github.com/ory/herodot"
"github.com/ory/ladon/compiler"
"github.com/ory/oathkeeper/helper"
"github.com/pborman/uuid"
"github.com/pkg/errors"
)
type Handler struct {
H herodot.Writer
M Manager
}
func (h *Handler) SetRoutes(r *httprouter.Router) {
r.GET("/rules", h.List)
r.POST("/rules", h.Create)
r.GET("/rules/:id", h.Get)
r.PUT("/rules/:id", h.Update)
r.DELETE("/rules/:id", h.Delete)
}
// swagger:route POST /rules rule createRule
//
// Create a rule
//
// This method allows creation of rules. If a rule id exists, you will receive an error.
//
// Consumes:
// - application/json
//
// Produces:
// - application/json
//
// Schemes: http, https
//
// Responses:
// 201: rule
// 401: genericError
// 403: genericError
// 500: genericError
func (h *Handler) Create(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
rule, err := decodeRule(w, r)
if err != nil {
h.H.WriteError(w, r, errors.WithStack(err))
return
}
if rule.ID == "" {
rule.ID = uuid.New()
}
if err := h.M.CreateRule(rule); err != nil {
h.H.WriteError(w, r, err)
return
}
h.H.WriteCreated(w, r, "/rules/"+rule.ID, encodeRule(rule))
}
// swagger:route GET /rules rule listRules
//
// List all rules
//
// This method returns an array of all rules that are stored in the backend. This is useful if you want to get a full
// view of what rules you have currently in place.
//
// Consumes:
// - application/json
//
// Produces:
// - application/json
//
// Schemes: http, https
//
// Responses:
// 200: rules
// 401: genericError
// 403: genericError
// 500: genericError
func (h *Handler) List(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
rules, err := h.M.ListRules()
if err != nil {
h.H.WriteError(w, r, err)
return
}
var encodedRules []jsonRule = make([]jsonRule, len(rules))
for k, rule := range rules {
encodedRules[k] = *encodeRule(&rule)
}
h.H.Write(w, r, encodedRules)
}
// swagger:route GET /rules/{id} rule getRule
//
// Retrieve a rule
//
// Use this method to retrieve a rule from the storage. If it does not exist you will receive a 404 error.
//
// Consumes:
// - application/json
//
// Produces:
// - application/json
//
// Schemes: http, https
//
// Responses:
// 200: rule
// 401: genericError
// 403: genericError
// 404: genericError
// 500: genericError
func (h *Handler) Get(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
rule, err := h.M.GetRule(ps.ByName("id"))
if errors.Cause(err) == helper.ErrResourceNotFound {
h.H.WriteErrorCode(w, r, http.StatusNotFound, err)
return
} else if err != nil {
h.H.WriteError(w, r, err)
return
}
h.H.Write(w, r, encodeRule(rule))
}
// swagger:route PUT /rules/{id} rule updateRule
//
// Update a rule
//
// Use this method to update a rule. Keep in mind that you need to send the full rule payload as this endpoint does
// not support patching.
//
// Consumes:
// - application/json
//
// Produces:
// - application/json
//
// Schemes: http, https
//
// Responses:
// 200: rule
// 401: genericError
// 403: genericError
// 404: genericError
// 500: genericError
func (h *Handler) Update(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
rule, err := decodeRule(w, r)
if err != nil {
h.H.WriteError(w, r, errors.WithStack(err))
return
}
rule.ID = ps.ByName("id")
if err := h.M.UpdateRule(rule); err != nil {
h.H.WriteError(w, r, err)
return
}
h.H.Write(w, r, encodeRule(rule))
}
// swagger:route DELETE /rules/{id} rule deleteRule
//
// Delete a rule
//
// Use this endpoint to delete a rule.
//
// Consumes:
// - application/json
//
// Produces:
// - application/json
//
// Schemes: http, https
//
// Responses:
// 204: emptyResponse
// 401: genericError
// 403: genericError
// 404: genericError
// 500: genericError
func (h *Handler) Delete(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
if err := h.M.DeleteRule(ps.ByName("id")); err != nil {
h.H.WriteError(w, r, err)
return
}
w.WriteHeader(http.StatusNoContent)
}
func decodeRule(w http.ResponseWriter, r *http.Request) (*Rule, error) {
rule := jsonRule{
MatchesMethods: []string{},
RequiredScopes: []string{},
}
if err := json.NewDecoder(r.Body).Decode(&rule); err != nil {
return nil, err
}
return toRule(&rule)
}
func toRule(rule *jsonRule) (*Rule, error) {
exp, err := compiler.CompileRegex(rule.MatchesURL, '<', '>')
if err != nil {
return nil, err
}
if !stringInSlice(rule.Mode, ruleModes) {
return nil, errors.Errorf("Rule mode %s not supported, use one of: %s", rule.Mode, strings.Join(ruleModes, ","))
}
return &Rule{
ID: rule.ID,
MatchesURLCompiled: exp,
MatchesURL: rule.MatchesURL,
MatchesMethods: rule.MatchesMethods,
RequiredScopes: rule.RequiredScopes,
RequiredAction: rule.RequiredAction,
RequiredResource: rule.RequiredResource,
Mode: rule.Mode,
Description: rule.Description,
}, nil
}
func encodeRule(r *Rule) *jsonRule {
return &jsonRule{
ID: r.ID,
MatchesURL: r.MatchesURL,
MatchesMethods: r.MatchesMethods,
RequiredScopes: r.RequiredScopes,
RequiredAction: r.RequiredAction,
RequiredResource: r.RequiredResource,
Mode: r.Mode,
Description: r.Description,
}
}