mirror of
https://github.com/zitadel/zitadel.git
synced 2024-12-22 07:47:29 +00:00
129 lines
3.0 KiB
Go
129 lines
3.0 KiB
Go
package middleware
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import (
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"fmt"
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"strings"
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)
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type CSP struct {
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DefaultSrc CSPSourceOptions
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ScriptSrc CSPSourceOptions
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ObjectSrc CSPSourceOptions
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StyleSrc CSPSourceOptions
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ImgSrc CSPSourceOptions
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MediaSrc CSPSourceOptions
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FrameSrc CSPSourceOptions
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FontSrc CSPSourceOptions
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ManifestSrc CSPSourceOptions
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ConnectSrc CSPSourceOptions
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FormAction CSPSourceOptions
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}
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var (
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DefaultSCP = CSP{
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DefaultSrc: CSPSourceOptsNone(),
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ScriptSrc: CSPSourceOptsSelf(),
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ObjectSrc: CSPSourceOptsNone(),
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StyleSrc: CSPSourceOptsSelf(),
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ImgSrc: CSPSourceOptsSelf(),
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MediaSrc: CSPSourceOptsNone(),
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FrameSrc: CSPSourceOptsNone(),
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FontSrc: CSPSourceOptsSelf(),
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ManifestSrc: CSPSourceOptsSelf(),
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ConnectSrc: CSPSourceOptsSelf(),
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}
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)
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func (csp *CSP) Value(nonce string) string {
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valuesMap := csp.asMap()
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values := make([]string, 0, len(valuesMap))
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for k, v := range valuesMap {
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if v == nil {
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continue
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}
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values = append(values, fmt.Sprintf("%v %v", k, v.String(nonce)))
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}
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return strings.Join(values, ";")
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}
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func (csp *CSP) asMap() map[string]CSPSourceOptions {
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return map[string]CSPSourceOptions{
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"default-src": csp.DefaultSrc,
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"script-src": csp.ScriptSrc,
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"object-src": csp.ObjectSrc,
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"style-src": csp.StyleSrc,
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"img-src": csp.ImgSrc,
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"media-src": csp.MediaSrc,
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"frame-src": csp.FrameSrc,
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"font-src": csp.FontSrc,
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"manifest-src": csp.ManifestSrc,
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"connect-src": csp.ConnectSrc,
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"form-action": csp.FormAction,
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}
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}
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type CSPSourceOptions []string
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func CSPSourceOpts() CSPSourceOptions {
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return CSPSourceOptions{}
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}
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func CSPSourceOptsNone() CSPSourceOptions {
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return []string{"'none'"}
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}
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func CSPSourceOptsSelf() CSPSourceOptions {
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return []string{"'self'"}
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}
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func (srcOpts CSPSourceOptions) AddSelf() CSPSourceOptions {
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return append(srcOpts, "'self'")
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}
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func (srcOpts CSPSourceOptions) AddInline() CSPSourceOptions {
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return append(srcOpts, "'unsafe-inline'")
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}
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func (srcOpts CSPSourceOptions) AddEval() CSPSourceOptions {
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return append(srcOpts, "'unsafe-eval'")
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}
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func (srcOpts CSPSourceOptions) AddStrictDynamic() CSPSourceOptions {
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return append(srcOpts, "'strict-dynamic'")
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}
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func (srcOpts CSPSourceOptions) AddHost(h ...string) CSPSourceOptions {
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return append(srcOpts, h...)
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}
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func (srcOpts CSPSourceOptions) AddScheme(s ...string) CSPSourceOptions {
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return srcOpts.add(s, "%v:")
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}
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func (srcOpts CSPSourceOptions) AddNonce() CSPSourceOptions {
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return append(srcOpts, "'nonce-%v'")
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}
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func (srcOpts CSPSourceOptions) AddHash(alg, b64v string) CSPSourceOptions {
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return append(srcOpts, fmt.Sprintf("'%v-%v'", alg, b64v))
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}
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func (srcOpts CSPSourceOptions) String(nonce string) string {
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value := strings.Join(srcOpts, " ")
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if !strings.Contains(value, "%v") {
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return value
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}
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return fmt.Sprintf(value, nonce)
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}
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func (srcOpts CSPSourceOptions) add(values []string, format string) CSPSourceOptions {
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for i, v := range values {
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values[i] = fmt.Sprintf(format, v)
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}
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return append(srcOpts, values...)
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}
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