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feat: support CAPTCHA action via Casdoor (#71)
* feat: support CAPTCHA action via Casdoor * update: update google/uuid to 1.6.0 * feat: add apache header * fix: go test error
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| // Copyright 2023 The casbin Authors. All Rights Reserved. | ||
| // | ||
| // 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. | ||
|
|
||
| package service | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "fmt" | ||
| "io" | ||
| "mime/multipart" | ||
| "net/http" | ||
| "time" | ||
|
|
||
| "github.com/casbin/caswaf/conf" | ||
| "github.com/casdoor/casdoor-go-sdk/casdoorsdk" | ||
| "github.com/google/uuid" | ||
| ) | ||
|
|
||
| type verifyResponse struct { | ||
| Status string `json:"status"` | ||
| Msg string `json:"msg"` | ||
| Sub string `json:"sub"` | ||
| Name string `json:"name"` | ||
| Data bool `json:"data"` | ||
| Data2 interface{} `json:"data2"` | ||
| } | ||
|
|
||
| var verifiedSession = make(map[string]time.Time) | ||
|
|
||
| func redirectToCaptcha(w http.ResponseWriter, r *http.Request) { | ||
| scheme := getScheme(r) | ||
| callbackUrl := fmt.Sprintf("%s://%s/caswaf-captcha-verify", scheme, r.Host) | ||
| captchaUri := fmt.Sprintf( | ||
| "%s/captcha?client_id=%s&redirect_uri=%s&state=%s", | ||
| getCasdoorEndpoint(), | ||
| conf.GetConfigString("clientId"), | ||
| callbackUrl, | ||
| conf.GetConfigString("casdoorApplication"), | ||
| ) | ||
| http.Redirect(w, r, captchaUri, http.StatusFound) | ||
| } | ||
|
|
||
| func handleCaptchaCallback(w http.ResponseWriter, r *http.Request) { | ||
| host := r.Host | ||
|
|
||
| code := r.URL.Query().Get("code") | ||
| typeStr := r.URL.Query().Get("type") | ||
| secret := r.URL.Query().Get("secret") | ||
| applicationId := r.URL.Query().Get("applicationId") | ||
| if code == "" || typeStr == "" || secret == "" || applicationId == "" { | ||
| redirectToCaptcha(w, r) | ||
| } | ||
|
|
||
| var b bytes.Buffer | ||
| writer := multipart.NewWriter(&b) | ||
| _ = writer.WriteField("captchaToken", code) | ||
| _ = writer.WriteField("clientSecret", secret) | ||
| _ = writer.WriteField("applicationId", applicationId) | ||
| _ = writer.WriteField("captchaType", typeStr) | ||
| _ = writer.Close() | ||
| verifyURL := casdoorsdk.GetUrl("verify-captcha", nil) | ||
| req, err := http.NewRequest("POST", verifyURL, &b) | ||
| if err != nil { | ||
| redirectToCaptcha(w, r) | ||
| } | ||
| req.Header.Set("Content-Type", writer.FormDataContentType()) | ||
| client := &http.Client{} | ||
| resp, err := client.Do(req) | ||
| if err != nil { | ||
| redirectToCaptcha(w, r) | ||
| } | ||
| // read response | ||
| body, err := io.ReadAll(resp.Body) | ||
| if err != nil { | ||
| redirectToCaptcha(w, r) | ||
| } | ||
| // parse response | ||
| var vr verifyResponse | ||
| err = json.Unmarshal(body, &vr) | ||
| if err != nil { | ||
| redirectToCaptcha(w, r) | ||
| } | ||
| if vr.Status != "ok" || !vr.Data { | ||
| redirectToCaptcha(w, r) | ||
| } | ||
| // set verified session | ||
| uuidStr := uuid.NewString() | ||
| verifiedSession[uuidStr] = time.Now() | ||
| cookie := &http.Cookie{ | ||
| Name: "casdoor_captcha_token", | ||
| Value: uuidStr, | ||
| Path: "/", | ||
| Domain: host, | ||
| Expires: time.Now().Add(30 * time.Minute), | ||
| RawExpires: "", | ||
| MaxAge: 0, | ||
| Secure: false, | ||
| HttpOnly: false, | ||
| SameSite: 0, | ||
| Raw: "", | ||
| Unparsed: nil, | ||
| } | ||
|
|
||
| scheme := getScheme(r) | ||
| http.SetCookie(w, cookie) | ||
| http.Redirect(w, r, scheme+"://"+host, http.StatusFound) | ||
| return | ||
| } | ||
|
|
||
| func isVerifiedSession(r *http.Request) bool { | ||
| cookie, err := r.Cookie("casdoor_captcha_token") | ||
| if err != nil { | ||
| return false | ||
| } | ||
| token := cookie.Value | ||
| if token == "" { | ||
| return false | ||
| } | ||
| t, ok := verifiedSession[token] | ||
| if ok { | ||
| if time.Now().Sub(t) < 30*time.Minute { | ||
| return true | ||
| } | ||
| delete(verifiedSession, token) | ||
| } | ||
| return false | ||
| } |
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