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package jose
import (
"go.step.sm/crypto/internal/utils"
)
type context struct {
filename string
use, alg, kid string
subtle, insecure bool
noDefaults bool
password []byte
passwordPrompt string
passwordPrompter PasswordPrompter
contentType string
}
// apply the options to the context and returns an error if one of the options
// fails.
func (ctx *context) apply(opts ...Option) (*context, error) {
for _, opt := range opts {
if err := opt(ctx); err != nil {
return nil, err
}
}
return ctx, nil
}
// Option is the type used to add attributes to the context.
type Option func(ctx *context) error
// WithFilename adds the given filename to the context.
func WithFilename(filename string) Option {
return func(ctx *context) error {
ctx.filename = filename
return nil
}
}
// WithUse adds the use claim to the context.
func WithUse(use string) Option {
return func(ctx *context) error {
ctx.use = use
return nil
}
}
// WithAlg adds the alg claim to the context.
func WithAlg(alg string) Option {
return func(ctx *context) error {
ctx.alg = alg
return nil
}
}
// WithKid adds the kid property to the context.
func WithKid(kid string) Option {
return func(ctx *context) error {
ctx.kid = kid
return nil
}
}
// WithSubtle marks the context as subtle.
func WithSubtle(subtle bool) Option {
return func(ctx *context) error {
ctx.subtle = subtle
return nil
}
}
// WithInsecure marks the context as insecure.
func WithInsecure(insecure bool) Option {
return func(ctx *context) error {
ctx.insecure = insecure
return nil
}
}
// WithNoDefaults avoids that the parser loads defaults values, specially the
// default algorithms.
func WithNoDefaults(val bool) Option {
return func(ctx *context) error {
ctx.noDefaults = val
return nil
}
}
// WithPassword is a method that adds the given password to the context.
func WithPassword(pass []byte) Option {
return func(ctx *context) error {
ctx.password = pass
return nil
}
}
// WithPasswordFile is a method that adds the password in a file to the context.
func WithPasswordFile(filename string) Option {
return func(ctx *context) error {
b, err := utils.ReadPasswordFromFile(filename)
if err != nil {
return err
}
ctx.password = b
return nil
}
}
// WithPasswordPrompter defines a method that can be used to prompt for the
// password to decrypt an encrypted JWE.
func WithPasswordPrompter(prompt string, fn PasswordPrompter) Option {
return func(ctx *context) error {
ctx.passwordPrompt = prompt
ctx.passwordPrompter = fn
return nil
}
}
// WithContentType adds the content type when encrypting data.
func WithContentType(cty string) Option {
return func(ctx *context) error {
ctx.contentType = cty
return nil
}
}
|
