109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice appear in all copies.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
|
|
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
|
|
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
|
|
// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
// PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
package session
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"fmt"
|
|
"io"
|
|
"strconv"
|
|
|
|
"github.com/99designs/gqlgen/graphql"
|
|
"go.probo.inc/probo/pkg/server/api/authn"
|
|
"go.probo.inc/probo/pkg/server/gqlutils"
|
|
)
|
|
|
|
type SessionRequirement string
|
|
|
|
const (
|
|
SessionRequirementPresent SessionRequirement = "PRESENT"
|
|
SessionRequirementNone SessionRequirement = "NONE"
|
|
SessionRequirementOptional SessionRequirement = "OPTIONAL"
|
|
)
|
|
|
|
var AllSessionRequirement = []SessionRequirement{
|
|
SessionRequirementPresent,
|
|
SessionRequirementNone,
|
|
SessionRequirementOptional,
|
|
}
|
|
|
|
func (e SessionRequirement) IsValid() bool {
|
|
switch e {
|
|
case SessionRequirementPresent, SessionRequirementNone, SessionRequirementOptional:
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
func (e SessionRequirement) String() string {
|
|
return string(e)
|
|
}
|
|
|
|
func (e *SessionRequirement) UnmarshalGQL(v any) error {
|
|
str, ok := v.(string)
|
|
if !ok {
|
|
return fmt.Errorf("enums must be strings")
|
|
}
|
|
|
|
*e = SessionRequirement(str)
|
|
if !e.IsValid() {
|
|
return fmt.Errorf("%s is not a valid SessionRequirement", str)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (e SessionRequirement) MarshalGQL(w io.Writer) {
|
|
_, _ = fmt.Fprint(w, strconv.Quote(e.String()))
|
|
}
|
|
|
|
func (e *SessionRequirement) UnmarshalJSON(b []byte) error {
|
|
s, err := strconv.Unquote(string(b))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return e.UnmarshalGQL(s)
|
|
}
|
|
|
|
func (e SessionRequirement) MarshalJSON() ([]byte, error) {
|
|
var buf bytes.Buffer
|
|
e.MarshalGQL(&buf)
|
|
return buf.Bytes(), nil
|
|
}
|
|
|
|
func Directive(ctx context.Context, obj any, next graphql.Resolver, required SessionRequirement) (any, error) {
|
|
identity := authn.IdentityFromContext(ctx)
|
|
|
|
switch required {
|
|
case SessionRequirementOptional:
|
|
case SessionRequirementPresent:
|
|
if identity == nil {
|
|
return nil, gqlutils.Unauthenticatedf(
|
|
ctx,
|
|
"authentication is required to access this resource",
|
|
)
|
|
}
|
|
case SessionRequirementNone:
|
|
if identity != nil {
|
|
return nil, gqlutils.AlreadyAuthenticatedf(
|
|
ctx,
|
|
"authentication not allowed for this resource/action",
|
|
)
|
|
}
|
|
}
|
|
|
|
return next(ctx)
|
|
}
|