func computeSum(in []byte) (sum Sum, err error) {
var data []byte
p, _ := pem.Decode(in)
if p == nil {
err = errors.NewBadRequestString("not a CSR or certificate")
return
}
switch p.Type {
case "CERTIFICATE REQUEST":
var req *x509.CertificateRequest
req, err = x509.ParseCertificateRequest(p.Bytes)
if err != nil {
return
}
data = req.Raw
case "CERTIFICATE":
var cert *x509.Certificate
cert, err = x509.ParseCertificate(p.Bytes)
if err != nil {
return
}
data = cert.Raw
default:
err = errors.NewBadRequestString("not a CSR or certificate")
return
}
md5Sum := md5.Sum(data)
sha1Sum := sha1.Sum(data)
sum.MD5 = fmt.Sprintf("%X", md5Sum[:])
sum.SHA1 = fmt.Sprintf("%X", sha1Sum[:])
return
}
// Handle responds to requests for the CA to sign the certificate request
// present in the "certificate_request" parameter for the host named
// in the "hostname" parameter. The certificate should be PEM-encoded. If
// provided, subject information from the "subject" parameter will be used
// in place of the subject information from the CSR.
func (h *Handler) Handle(w http.ResponseWriter, r *http.Request) error {
log.Info("signature request received")
body, err := ioutil.ReadAll(r.Body)
if err != nil {
return err
}
r.Body.Close()
var req jsonSignRequest
err = json.Unmarshal(body, &req)
if err != nil {
return errors.NewBadRequestString("Unable to parse sign request")
}
signReq := jsonReqToTrue(req)
if signReq.Hosts == nil {
return errors.NewBadRequestString("missing parameter 'hostname' or 'hosts'")
}
if req.Request == "" {
return errors.NewBadRequestString("missing parameter 'certificate_request'")
}
var cert []byte
var profile *config.SigningProfile
policy := h.signer.Policy()
if policy != nil && policy.Profiles != nil && req.Profile != "" {
profile = policy.Profiles[req.Profile]
}
if profile == nil && policy != nil {
profile = policy.Default
}
if profile.Provider != nil {
log.Error("profile requires authentication")
return errors.NewBadRequestString("authentication required")
}
cert, err = h.signer.Sign(signReq)
if err != nil {
log.Warningf("failed to sign request: %v", err)
return err
}
result := map[string]string{"certificate": string(cert)}
log.Info("wrote response")
return api.SendResponse(w, result)
}
// ProcessRequestOneOf reads a JSON blob for the request and makes
// sure it contains one of a set of keywords. For example, a request
// might have the ('foo' && 'bar') keys, OR it might have the 'baz'
// key. In either case, we want to accept the request; however, if
// none of these sets shows up, the request is a bad request, and it
// should be returned.
func ProcessRequestOneOf(r *http.Request, keywordSets [][]string) (map[string]string, []string, error) {
blob, err := readRequestBlob(r)
if err != nil {
return nil, nil, err
}
var matched []string
for _, set := range keywordSets {
if matchKeywords(blob, set) {
if matched != nil {
return nil, nil, errors.NewBadRequestString("mismatched parameters")
}
matched = set
}
}
if matched == nil {
return nil, nil, errors.NewBadRequestString("no valid parameter sets found")
}
return blob, matched, nil
}
// ProcessRequestFirstMatchOf reads a JSON blob for the request and returns
// the first match of a set of keywords. For example, a request
// might have one of the following combinations: (foo=1, bar=2), (foo=1), and (bar=2)
// By giving a specific ordering of those combinations, we could decide how to accept
// the request.
func ProcessRequestFirstMatchOf(r *http.Request, keywordSets [][]string) (map[string]string, []string, error) {
blob, err := readRequestBlob(r)
if err != nil {
return nil, nil, err
}
for _, set := range keywordSets {
if matchKeywords(blob, set) {
return blob, set, nil
}
}
return nil, nil, errors.NewBadRequestString("no valid parameter sets found")
}
// Handle responds to requests for the CA to generate a new private
// key and certificate request on behalf of the client. The format for
// these requests is documented in the API documentation.
func (g *Handler) Handle(w http.ResponseWriter, r *http.Request) error {
log.Info("request for CSR")
req := new(csr.CertificateRequest)
body, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Warningf("failed to read request body: %v", err)
return errors.NewBadRequest(err)
}
err = json.Unmarshal(body, req)
if err != nil {
log.Warningf("failed to unmarshal request: %v", err)
return errors.NewBadRequest(err)
}
if req.CA != nil {
log.Warningf("request received with CA section")
return errors.NewBadRequestString("ca section only permitted in initca")
}
csr, key, err := g.generator.ProcessRequest(req)
if err != nil {
log.Warningf("failed to process CSR: %v", err)
// The validator returns a *cfssl/errors.HttpError
return err
}
sum, err := computeSum(csr)
if err != nil {
return errors.NewBadRequest(err)
}
// Both key and csr are returned PEM-encoded.
response := api.NewSuccessResponse(&CertRequest{
Key: string(key),
CSR: string(csr),
Sums: map[string]Sum{"certificate_request": sum},
})
w.Header().Set("Content-Type", "application/json")
enc := json.NewEncoder(w)
err = enc.Encode(response)
return err
}
// Handle accepts client information requests, and uses the label to
// look up the signer whose public certificate should be retrieved. If
// the label is empty, the default label is used.
func (h *MultiHandler) Handle(w http.ResponseWriter, r *http.Request) error {
req := new(client.InfoReq)
body, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Warningf("failed to read request body: %v", err)
return errors.NewBadRequest(err)
}
err = json.Unmarshal(body, req)
if err != nil {
log.Warningf("failed to unmarshal request: %v", err)
return errors.NewBadRequest(err)
}
log.Debug("checking label")
if req.Label == "" {
req.Label = h.defaultLabel
}
if _, ok := h.signers[req.Label]; !ok {
log.Warningf("request for invalid endpoint")
return errors.NewBadRequestString("bad label")
}
log.Debug("getting cert")
cert, err := h.signers[req.Label].Certificate("", req.Profile)
if err != nil {
log.Infof("error getting certificate: %v", err)
return err
}
resp := client.InfoResp{
Certificate: bundler.PemBlockToString(&pem.Block{Type: "CERTIFICATE", Bytes: cert.Raw}),
}
response := api.NewSuccessResponse(resp)
w.Header().Set("Content-Type", "application/json")
enc := json.NewEncoder(w)
return enc.Encode(response)
}
// scanHandler is an HTTP handler that accepts GET parameters for host (required)
// family and scanner, and uses these to perform scans, returning a JSON blob result.
func scanHandler(w http.ResponseWriter, r *http.Request) error {
log.Info("setting up scan handler")
err := r.ParseForm()
log.Info(r.Form)
if err != nil {
log.Warningf("failed to parse body: %v", err)
return errors.NewBadRequest(err)
}
if len(r.Form["host"]) == 0 {
log.Warningf("no host given")
return errors.NewBadRequestString("no host given")
}
host := r.Form["host"][0]
var family, scanner string
if len(r.Form["family"]) > 0 {
family = r.Form["family"][0]
}
if len(r.Form["scanner"]) > 0 {
scanner = r.Form["scanner"][0]
}
results, err := scan.Default.RunScans(host, family, scanner)
if err != nil {
log.Warningf("%v", err)
return errors.NewBadRequest(err)
}
response := api.NewSuccessResponse(results)
enc := json.NewEncoder(w)
err = enc.Encode(response)
return err
}
// Handle receives the incoming request, validates it, and processes it.
func (h *AuthHandler) Handle(w http.ResponseWriter, r *http.Request) error {
log.Info("signature request received")
body, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Errorf("failed to read response body: %v", err)
return err
}
r.Body.Close()
var aReq auth.AuthenticatedRequest
err = json.Unmarshal(body, &aReq)
if err != nil {
log.Errorf("failed to unmarshal authenticated request: %v", err)
return errors.NewBadRequest(err)
}
var req jsonSignRequest
err = json.Unmarshal(aReq.Request, &req)
if err != nil {
log.Errorf("failed to unmarshal request from authenticated request: %v", err)
return errors.NewBadRequestString("Unable to parse authenticated sign request")
}
// Sanity checks to ensure that we have a valid policy. This
// should have been checked in NewAuthHandler.
policy := h.signer.Policy()
if policy == nil {
log.Critical("signer was initialised without a signing policy")
return errors.NewBadRequestString("invalid policy")
}
profile := policy.Default
if policy.Profiles != nil && req.Profile != "" {
profile = policy.Profiles[req.Profile]
}
if profile == nil {
log.Critical("signer was initialised without any valid profiles")
return errors.NewBadRequestString("invalid profile")
}
if profile.Provider == nil {
log.Error("profile has no authentication provider")
return errors.NewBadRequestString("no authentication provider")
}
if !profile.Provider.Verify(&aReq) {
log.Warning("received authenticated request with invalid token")
return errors.NewBadRequestString("invalid token")
}
signReq := jsonReqToTrue(req)
if signReq.Hosts == nil {
return errors.NewBadRequestString("missing parameter 'hostname' or 'hosts'")
}
if signReq.Request == "" {
return errors.NewBadRequestString("missing parameter 'certificate_request'")
}
cert, err := h.signer.Sign(signReq)
if err != nil {
log.Errorf("signature failed: %v", err)
return err
}
result := map[string]string{"certificate": string(cert)}
log.Info("wrote response")
return api.SendResponse(w, result)
}
// Handle responds to requests for the CA to generate a new private
// key and certificate on behalf of the client. The format for these
// requests is documented in the API documentation.
func (cg *CertGeneratorHandler) Handle(w http.ResponseWriter, r *http.Request) error {
log.Info("request for CSR")
req := new(genSignRequest)
body, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Warningf("failed to read request body: %v", err)
return errors.NewBadRequest(err)
}
err = json.Unmarshal(body, req)
if err != nil {
log.Warningf("failed to unmarshal request: %v", err)
return errors.NewBadRequest(err)
}
if req.Request == nil {
log.Warning("empty request received")
return errors.NewBadRequestString("missing request section")
}
if req.Request.CA != nil {
log.Warningf("request received with CA section")
return errors.NewBadRequestString("ca section only permitted in initca")
}
csr, key, err := cg.generator.ProcessRequest(req.Request)
if err != nil {
log.Warningf("failed to process CSR: %v", err)
// The validator returns a *cfssl/errors.HttpError
return err
}
var certPEM []byte
var profile *config.SigningProfile
policy := cg.signer.Policy()
if policy != nil && policy.Profiles != nil && req.Profile != "" {
profile = policy.Profiles[req.Profile]
}
if profile == nil && policy != nil {
profile = policy.Default
}
// This API does not override the subject because it was already added to the CSR
signReq := signer.SignRequest{
Hosts: signer.SplitHosts(req.Hostname),
Request: string(csr),
Profile: req.Profile,
Label: req.Label,
}
certBytes, err := cg.signer.Sign(signReq)
if err != nil {
log.Warningf("failed to sign request: %v", err)
return err
}
reqSum, err := computeSum(csr)
if err != nil {
return errors.NewBadRequest(err)
}
certSum, err := computeSum(certBytes)
if err != nil {
return errors.NewBadRequest(err)
}
result := map[string]interface{}{
"private_key": string(key),
"certificate_request": string(csr),
"certificate": string(certPEM),
"sums": map[string]Sum{
"certificate_request": reqSum,
"certificate": certSum,
},
}
return api.SendResponse(w, result)
}
