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mw_access_rights.go
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/
mw_access_rights.go
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package main
import (
"errors"
"net/http"
"github.com/Sirupsen/logrus"
)
// AccessRightsCheck is a middleware that will check if the key bing used to access the API has
// permission to access the specific version. If no permission data is in the SessionState, then
// it is assumed that the user can go through.
type AccessRightsCheck struct {
*TykMiddleware
}
func (a *AccessRightsCheck) GetName() string {
return "AccessRightsCheck"
}
// ProcessRequest will run any checks on the request on the way through the system, return an error to have the chain fail
func (a *AccessRightsCheck) ProcessRequest(w http.ResponseWriter, r *http.Request, _ interface{}) (error, int) {
accessingVersion := a.Spec.getVersionFromRequest(r)
session := ctxGetSession(r)
token := ctxGetAuthToken(r)
// If there's nothing in our profile, we let them through to the next phase
if len(session.AccessRights) > 0 {
// Otherwise, run auth checks
versionList, apiExists := session.AccessRights[a.Spec.APIID]
if !apiExists {
log.WithFields(logrus.Fields{
"path": r.URL.Path,
"origin": GetIPFromRequest(r),
"key": token,
"api_found": false,
}).Info("Attempted access to unauthorised API.")
return errors.New("Access to this API has been disallowed"), 403
}
// Find the version in their key access details
found := false
if a.Spec.VersionData.NotVersioned {
// Not versioned, no point checking version access rights
found = true
} else {
for _, vInfo := range versionList.Versions {
if vInfo == accessingVersion {
found = true
break
}
}
}
if !found {
// Not found? Bounce
log.WithFields(logrus.Fields{
"path": r.URL.Path,
"origin": GetIPFromRequest(r),
"key": token,
"api_found": true,
"version_found": false,
}).Info("Attempted access to unauthorised API version.")
return errors.New("Access to this API has been disallowed"), 403
}
}
return nil, 200
}