violet/servers/api/auth.go

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package api
import (
"github.com/1f349/mjwt"
"github.com/1f349/mjwt/auth"
2023-07-22 01:11:47 +01:00
"github.com/1f349/violet/utils"
"github.com/julienschmidt/httprouter"
"net/http"
)
type AuthClaims mjwt.BaseTypeClaims[auth.AccessTokenClaims]
type AuthCallback func(rw http.ResponseWriter, req *http.Request, params httprouter.Params, b AuthClaims)
// checkAuth validates the bearer token against a mjwt.Verifier and returns an
// error message or continues to the next handler
func checkAuth(verify mjwt.Verifier, cb AuthCallback) httprouter.Handle {
return func(rw http.ResponseWriter, req *http.Request, params httprouter.Params) {
// Get bearer token
bearer := utils.GetBearer(req)
if bearer == "" {
apiError(rw, http.StatusForbidden, "Missing bearer token")
return
}
// Read claims from mjwt
_, b, err := mjwt.ExtractClaims[auth.AccessTokenClaims](verify, bearer)
if err != nil {
apiError(rw, http.StatusForbidden, "Invalid token")
return
}
cb(rw, req, params, AuthClaims(b))
}
}
// checkAuthWithPerm validates the bearer token and checks if it contains a
// required permission and returns an error message or continues to the next
// handler
func checkAuthWithPerm(verify mjwt.Verifier, perm string, cb AuthCallback) httprouter.Handle {
return checkAuth(verify, func(rw http.ResponseWriter, req *http.Request, params httprouter.Params, b AuthClaims) {
// check perms
if !b.Claims.Perms.Has(perm) {
apiError(rw, http.StatusForbidden, "No permission")
return
}
cb(rw, req, params, b)
})
}