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Adds key creation for http signatures
Resolves openfaas#1103 Signed-off-by: Edward Wilde <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| package handlers | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "log" | ||
| "net/http" | ||
| "os" | ||
| "path" | ||
|
|
||
| "github.com/gorilla/mux" | ||
| ) | ||
|
|
||
| var keyMap = map[string]string{ | ||
| "callback": "http-signing-public-key", | ||
| } | ||
|
|
||
| type KeyType struct { | ||
| Id string `json:"id"` | ||
| PEM string `json:"pem"` | ||
| } | ||
|
|
||
| type SecretsReader interface { | ||
| Read(key string) (string, error) | ||
| } | ||
|
|
||
| type FileSecretsReader struct { | ||
| SecretMountPath string | ||
| } | ||
|
|
||
| func (f *FileSecretsReader) Read(key string) (string, error) { | ||
| if len(f.SecretMountPath) == 0 { | ||
| return "", fmt.Errorf("invalid SecretMountPath specified for reading secrets used for certificates") | ||
| } | ||
|
|
||
| certificatePath := path.Join(f.SecretMountPath, key) | ||
| if _, err := os.Stat(certificatePath); os.IsNotExist(err) { | ||
| return "", fmt.Errorf("unable to find secret %s", key) | ||
| } | ||
|
|
||
| value, err := ioutil.ReadFile(certificatePath) | ||
| if err != nil { | ||
| return "", fmt.Errorf("error reading find secret %s", certificatePath) | ||
| } | ||
|
|
||
| return string(value), nil | ||
| } | ||
|
|
||
| func MakeCertificatesHandler(reader SecretsReader) http.HandlerFunc { | ||
| return func(w http.ResponseWriter, r *http.Request) { | ||
| vars := mux.Vars(r) | ||
| keyID := vars["id"] | ||
| secretKey, ok := keyMap[keyID] | ||
| if !ok { | ||
| w.WriteHeader(http.StatusNotFound) | ||
| message := fmt.Sprintf("Unable to find certificate %s.", keyID) | ||
| w.Write([]byte(message)) | ||
| log.Println(message) | ||
| return | ||
| } | ||
|
|
||
| publicKey, err := reader.Read(secretKey) | ||
| if err != nil { | ||
| w.WriteHeader(http.StatusNotFound) | ||
| message := fmt.Sprintf("Unable to find secret for key %s.", keyID) | ||
| w.Write([]byte(message)) | ||
| log.Println(message) | ||
| return | ||
| } | ||
|
|
||
| key := &KeyType{ | ||
| Id: secretKey, | ||
| PEM: publicKey, | ||
| } | ||
|
|
||
| bytesOut, marshalErr := json.Marshal(key) | ||
| if marshalErr != nil { | ||
| w.WriteHeader(http.StatusInternalServerError) | ||
| message := fmt.Sprintf("error marshalling json for key %s. %v", keyID, err) | ||
| w.Write([]byte(message)) | ||
| log.Println(message) | ||
| } | ||
|
|
||
| w.Header().Set("Content-Type", "application/json") | ||
| w.WriteHeader(http.StatusOK) | ||
| w.Write(bytesOut) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| package handlers | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "net/http/httptest" | ||
| "testing" | ||
|
|
||
| "github.com/gorilla/mux" | ||
| ) | ||
|
|
||
| func TestMakeCertificatesHandler(t *testing.T) { | ||
| tests := []struct { | ||
| name string | ||
| keyID string | ||
| eval func(r *http.Response) error | ||
| reader SecretsReader | ||
| }{ | ||
| { | ||
| name: "Get certificate that exists", | ||
| keyID: "callback", | ||
| eval: func(r *http.Response) error { | ||
| if r.StatusCode != 200 { | ||
| return fmt.Errorf("expected 200") | ||
| } | ||
|
|
||
| body, _ := ioutil.ReadAll(r.Body) | ||
| keyData := &KeyType{} | ||
| if err := json.Unmarshal(body, keyData); err != nil { | ||
| return fmt.Errorf("error unmarshalling result") | ||
| } | ||
|
|
||
| if keyData.PEM != testPublicKey { | ||
| return fmt.Errorf("PEM want %s got %s", testPublicKey, keyData.PEM) | ||
| } | ||
| return nil | ||
| }, | ||
| reader: &TestSecretsReader{readCallBack: func(key string) (s string, e error) { | ||
| return testPublicKey, nil | ||
| }}, | ||
| }, | ||
| { | ||
|
|
||
| name: "Attempt to get certificate that doesn't exist", | ||
| keyID: "missingID", | ||
| eval: func(r *http.Response) error { | ||
| if r.StatusCode != 404 { | ||
| return fmt.Errorf("expected 404") | ||
| } | ||
|
|
||
| return nil | ||
| }, | ||
| reader: &TestSecretsReader{readCallBack: func(key string) (s string, e error) { | ||
| return "", fmt.Errorf("key not found") | ||
| }}, | ||
| }, | ||
| } | ||
|
|
||
| r := mux.NewRouter() | ||
| ts := httptest.NewServer(r) | ||
| defer ts.Close() | ||
|
|
||
| for _, tt := range tests { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| r.HandleFunc("/certificates/{id}", MakeCertificatesHandler(tt.reader)) | ||
|
|
||
| url := ts.URL + "/certificates/" + tt.keyID | ||
| resp, err := http.Get(url) | ||
| if err != nil { | ||
| t.Errorf("MakeCertificatesHandler() call = %v", err) | ||
| } | ||
|
|
||
| if err := tt.eval(resp); err != nil { | ||
| t.Errorf("MakeCertificatesHandler() eval = %v", err) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| type TestSecretsReader struct { | ||
| readCallBack func(key string) (string, error) | ||
| } | ||
|
|
||
| func (r *TestSecretsReader) Read(key string) (string, error) { | ||
| return r.readCallBack(key) | ||
| } | ||
|
|
||
| const testPublicKey = `-----BEGIN PUBLIC KEY----- | ||
| MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7pEUKQ28pI5N3g/zG6OJ | ||
| 100N/DV2Q8Ob+gzRjd7HjXgVgZyjS3nA8FAYrxTLSihcIhXuQrYxyk2vp6YMNmSB | ||
| fOptkdmj4UgLYskfeqEt8JjS6ExBxSWEDgr1IXOPPDP61on8F65/ZYGnp2JF2wHY | ||
| k0OeD4ppNUV+mIHj/wXf7VLHGflwFQH/+mfUn+tVQRgX7hTadcYmGJ+1XP0py4kU | ||
| gJDHfw8eBsFurHWr2mXu3BdraSKKf1G9i+SifmOUUul6mBONmlvzQdKtDCr48o1H | ||
| QndRHcMWjKhlBhKz4qrmqku8oGBh6iHhGVVYf8D3mU1nzyjH4rOUXZwzj+SaqgGk | ||
| vQIDAQAB | ||
| -----END PUBLIC KEY-----` |
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