88 lines
2.8 KiB
Go
88 lines
2.8 KiB
Go
package authorization
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import (
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"crypto/x509"
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"encoding/json"
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"encoding/pem"
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)
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const (
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// AuthZApiRequest is the url for daemon request authorization
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AuthZApiRequest = "AuthZPlugin.AuthZReq"
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// AuthZApiResponse is the url for daemon response authorization
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AuthZApiResponse = "AuthZPlugin.AuthZRes"
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// AuthZApiImplements is the name of the interface all AuthZ plugins implement
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AuthZApiImplements = "authz"
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)
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// PeerCertificate is a wrapper around x509.Certificate which provides a sane
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// enconding/decoding to/from PEM format and JSON.
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type PeerCertificate x509.Certificate
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// MarshalJSON returns the JSON encoded pem bytes of a PeerCertificate.
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func (pc *PeerCertificate) MarshalJSON() ([]byte, error) {
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b := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: pc.Raw})
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return json.Marshal(b)
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}
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// UnmarshalJSON populates a new PeerCertificate struct from JSON data.
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func (pc *PeerCertificate) UnmarshalJSON(b []byte) error {
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var buf []byte
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if err := json.Unmarshal(b, &buf); err != nil {
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return err
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}
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derBytes, _ := pem.Decode(buf)
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c, err := x509.ParseCertificate(derBytes.Bytes)
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if err != nil {
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return err
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}
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*pc = PeerCertificate(*c)
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return nil
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}
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// Request holds data required for authZ plugins
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type Request struct {
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// User holds the user extracted by AuthN mechanism
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User string `json:"User,omitempty"`
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// UserAuthNMethod holds the mechanism used to extract user details (e.g., krb)
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UserAuthNMethod string `json:"UserAuthNMethod,omitempty"`
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// RequestMethod holds the HTTP method (GET/POST/PUT)
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RequestMethod string `json:"RequestMethod,omitempty"`
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// RequestUri holds the full HTTP uri (e.g., /v1.21/version)
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RequestURI string `json:"RequestUri,omitempty"`
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// RequestBody stores the raw request body sent to the docker daemon
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RequestBody []byte `json:"RequestBody,omitempty"`
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// RequestHeaders stores the raw request headers sent to the docker daemon
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RequestHeaders map[string]string `json:"RequestHeaders,omitempty"`
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// RequestPeerCertificates stores the request's TLS peer certificates in PEM format
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RequestPeerCertificates []*PeerCertificate `json:"RequestPeerCertificates,omitempty"`
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// ResponseStatusCode stores the status code returned from docker daemon
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ResponseStatusCode int `json:"ResponseStatusCode,omitempty"`
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// ResponseBody stores the raw response body sent from docker daemon
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ResponseBody []byte `json:"ResponseBody,omitempty"`
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// ResponseHeaders stores the response headers sent to the docker daemon
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ResponseHeaders map[string]string `json:"ResponseHeaders,omitempty"`
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}
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// Response represents authZ plugin response
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type Response struct {
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// Allow indicating whether the user is allowed or not
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Allow bool `json:"Allow"`
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// Msg stores the authorization message
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Msg string `json:"Msg,omitempty"`
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// Err stores a message in case there's an error
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Err string `json:"Err,omitempty"`
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}
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