onasty/internal/transport/http/apiv1/middleware.go (view raw)
Smirnov Oleksandr
Smirnov Oleksandr
ss2316544@gmail.com chore(golangci-lint): upgrade config (#14)..., 1 year ago
ss2316544@gmail.com chore(golangci-lint): upgrade config (#14)..., 1 year ago
| 1 | package apiv1 |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "strings" |
| 6 | |
| 7 | "github.com/gin-gonic/gin" |
| 8 | "github.com/gofrs/uuid/v5" |
| 9 | "github.com/olexsmir/onasty/internal/models" |
| 10 | ) |
| 11 | |
| 12 | const userIDCtxKey = "userID" |
| 13 | |
| 14 | // authorizedMiddleware is a middleware that checks if user is authorized |
| 15 | // and if so sets user metadata to context |
| 16 | // |
| 17 | // being authorized is required for making the request for specific endpoint |
| 18 | func (a *APIV1) authorizedMiddleware(c *gin.Context) { |
| 19 | token, ok := getTokenFromAuthHeaders(c) |
| 20 | if !ok { |
| 21 | errorResponse(c, ErrUnauthorized) |
| 22 | return |
| 23 | } |
| 24 | |
| 25 | uid, err := a.validateAuthorizedUser(c.Request.Context(), token) |
| 26 | if err != nil { |
| 27 | errorResponse(c, err) |
| 28 | return |
| 29 | } |
| 30 | |
| 31 | c.Set(userIDCtxKey, uid) |
| 32 | |
| 33 | c.Next() |
| 34 | } |
| 35 | |
| 36 | // couldBeAuthorizedMiddleware is a middleware that checks if user is authorized and |
| 37 | // if so sets user metadata to context |
| 38 | // |
| 39 | // it is NOT required to be authorized for making the request for specific endpoint |
| 40 | func (a *APIV1) couldBeAuthorizedMiddleware(c *gin.Context) { |
| 41 | token, ok := getTokenFromAuthHeaders(c) |
| 42 | if ok { |
| 43 | uid, err := a.validateAuthorizedUser(c.Request.Context(), token) |
| 44 | if err != nil { |
| 45 | errorResponse(c, err) |
| 46 | return |
| 47 | } |
| 48 | |
| 49 | c.Set(userIDCtxKey, uid) |
| 50 | } |
| 51 | |
| 52 | c.Next() |
| 53 | } |
| 54 | |
| 55 | //nolint:unused // TODO: remove me later |
| 56 | func (a *APIV1) isUserAuthorized(c *gin.Context) bool { |
| 57 | return !a.getUserID(c).IsNil() |
| 58 | } |
| 59 | |
| 60 | func getTokenFromAuthHeaders(c *gin.Context) (token string, ok bool) { //nolint:nonamedreturns |
| 61 | header := c.GetHeader("Authorization") |
| 62 | if header == "" { |
| 63 | return "", false |
| 64 | } |
| 65 | |
| 66 | headerParts := strings.Split(header, " ") |
| 67 | if len(headerParts) != 2 && headerParts[0] != "Bearer" { |
| 68 | return "", false |
| 69 | } |
| 70 | |
| 71 | if len(headerParts[1]) == 0 { |
| 72 | return "", false |
| 73 | } |
| 74 | |
| 75 | return headerParts[1], true |
| 76 | } |
| 77 | |
| 78 | // getUserId returns userId from the context |
| 79 | // getting user id is only possible if user is authorized |
| 80 | func (a *APIV1) getUserID(c *gin.Context) uuid.UUID { |
| 81 | userID, exists := c.Get(userIDCtxKey) |
| 82 | if !exists { |
| 83 | return uuid.Nil |
| 84 | } |
| 85 | |
| 86 | uid, ok := userID.(uuid.UUID) |
| 87 | if !ok { |
| 88 | return uuid.Nil |
| 89 | } |
| 90 | |
| 91 | return uid |
| 92 | } |
| 93 | |
| 94 | func (a *APIV1) validateAuthorizedUser(ctx context.Context, accessToken string) (uuid.UUID, error) { |
| 95 | tokenPayload, err := a.usersrv.ParseJWTToken(accessToken) |
| 96 | if err != nil { |
| 97 | return uuid.Nil, err |
| 98 | } |
| 99 | |
| 100 | userID := uuid.Must(uuid.FromString(tokenPayload.UserID)) |
| 101 | |
| 102 | ok, err := a.usersrv.CheckIfUserExists(ctx, userID) |
| 103 | if err != nil { |
| 104 | return uuid.Nil, err |
| 105 | } |
| 106 | |
| 107 | if !ok { |
| 108 | return uuid.Nil, ErrUnauthorized |
| 109 | } |
| 110 | |
| 111 | ok, err = a.usersrv.CheckIfUserIsActivated(ctx, userID) |
| 112 | if err != nil { |
| 113 | return uuid.Nil, err |
| 114 | } |
| 115 | |
| 116 | if !ok { |
| 117 | return uuid.Nil, models.ErrUserIsNotActivated |
| 118 | } |
| 119 | |
| 120 | return userID, nil |
| 121 | } |