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Merge pull request #10 from eflows4hpc/unity-sso
SSO authentication
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| package rest | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/base64" | ||
| "fmt" | ||
| "net/http" | ||
|
|
||
| "github.com/eflows4hpc/hpcwaas-api/api" | ||
| "github.com/eflows4hpc/hpcwaas-api/pkg/store" | ||
| "github.com/gin-gonic/gin" | ||
| "github.com/pkg/errors" | ||
| ) | ||
|
|
||
| func (s *Server) authorize(gc *gin.Context) { | ||
| // Check state | ||
| requestState := gc.Request.FormValue("state") | ||
| if requestState != s.Config.Auth.State { | ||
| writeError(gc, newBadRequestMessage("request state doesn't match session state")) | ||
| return | ||
| } | ||
|
|
||
| // Exchange code | ||
| authorizationCode := gc.Request.FormValue("code") | ||
| token, err := s.Config.Auth.OAuth2.Exchange(context.Background(), authorizationCode) | ||
| if err != nil { | ||
| writeError(gc, newInternalServerError(err)) | ||
| return | ||
| } | ||
|
|
||
| // Get user info from endpoint | ||
| userInfo, err := s.getUserInfo(gc, token.AccessToken) | ||
| if err != nil { | ||
| writeError(gc, newInternalServerError(err)) | ||
| return | ||
| } | ||
|
|
||
| // Start a new session with user info and token | ||
| err = s.store.CreateSession(gc, userInfo, token.AccessToken) | ||
| if err != nil { | ||
| writeError(gc, newInternalServerError(err)) | ||
| return | ||
| } | ||
|
|
||
| // Set user ID in context | ||
| userAccount := AuthAccount{Username: userInfo.Sub} | ||
| gc.Set(gin.AuthUserKey, userAccount) | ||
|
|
||
| encodedToken := base64.StdEncoding.EncodeToString([]byte(token.AccessToken)) | ||
| msg := fmt.Sprintf(` Log in successful | ||
| Welcome %s %s | ||
| User ID: %s | ||
| You can now use HPCWaaS | ||
| For using the CLI, please use the following token: | ||
| %s | ||
| `, userInfo.FirstName, userInfo.Surname, userInfo.Sub, encodedToken) | ||
|
|
||
| gc.String(http.StatusOK, msg) | ||
| } | ||
|
|
||
| func (s *Server) getUserInfo(ctx context.Context, accessToken string) (*store.UserInfo, error) { | ||
| var res store.UserInfo | ||
| url := s.Config.Auth.UserInfoURL | ||
| request, err := http.NewRequest(http.MethodGet, url, nil) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "failed to create http request") | ||
| } | ||
| request.Header.Set("Authorization", "Bearer "+accessToken) | ||
|
|
||
| client := http.Client{} | ||
| response, err := client.Do(request) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "failed to send http request to get user info") | ||
| } | ||
|
|
||
| err = api.ReadResponse(response, &res) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &res, nil | ||
| } |
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