// initialCAHandler is an HTTP handler that accepts a JSON blob in the
// same format as the CSR endpoint; this blob should contain the
// identity information for the CA's root key. This endpoint is not
// suitable for creating intermediate certificates.
func initialCAHandler(w http.ResponseWriter, r *http.Request) error {
log.Info("setting up initial CA handler")
body, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Warningf("failed to read request body: %v", err)
return errors.NewBadRequest(err)
}
req := new(csr.CertificateRequest)
req.KeyRequest = csr.NewBasicKeyRequest()
err = json.Unmarshal(body, req)
if err != nil {
log.Warningf("failed to unmarshal request: %v", err)
return errors.NewBadRequest(err)
}
cert, _, key, err := initca.New(req)
if err != nil {
log.Warningf("failed to initialise new CA: %v", err)
return err
}
response := api.NewSuccessResponse(&NewCA{string(key), string(cert)})
enc := json.NewEncoder(w)
err = enc.Encode(response)
return err
}
// Handle implements an http.Handler interface for the bundle handler.
func (h *Handler) Handle(w http.ResponseWriter, r *http.Request) (err error) {
blob, matched, err := api.ProcessRequestFirstMatchOf(r,
[][]string{
[]string{"certificate"},
[]string{"domain"},
})
if err != nil {
log.Warningf("invalid request: %v", err)
return err
}
var cert *certinfo.Certificate
switch matched[0] {
case "domain":
if cert, err = certinfo.ParseCertificateDomain(blob["domain"]); err != nil {
log.Warningf("couldn't parse remote certificate: %v", err)
return err
}
case "certificate":
if cert, err = certinfo.ParseCertificatePEM([]byte(blob["certificate"])); err != nil {
log.Warningf("bad PEM certifcate: %v", err)
return err
}
}
return api.SendResponse(w, cert)
}
// 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(info.Req)
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 info")
resp, err := h.signers[req.Label].Info(*req)
if err != nil {
log.Infof("error getting certificate: %v", err)
return err
}
response := api.NewSuccessResponse(resp)
w.Header().Set("Content-Type", "application/json")
enc := json.NewEncoder(w)
return enc.Encode(response)
}
// Handle implements an http.Handler interface for the bundle handler.
func (h *Handler) Handle(w http.ResponseWriter, r *http.Request) error {
blob, matched, err := api.ProcessRequestFirstMatchOf(r,
[][]string{
[]string{"certificate"},
[]string{"domain"},
})
if err != nil {
log.Warningf("invalid request: %v", err)
return err
}
flavor := blob["flavor"]
bf := bundler.Ubiquitous
if flavor != "" {
bf = bundler.BundleFlavor(flavor)
}
log.Infof("request for flavor %v", bf)
var result *bundler.Bundle
switch matched[0] {
case "domain":
bundle, err := h.bundler.BundleFromRemote(blob["domain"], blob["ip"], bf)
if err != nil {
log.Warningf("couldn't bundle from remote: %v", err)
return err
}
result = bundle
case "certificate":
bundle, err := h.bundler.BundleFromPEMorDER([]byte(blob["certificate"]), []byte(blob["private_key"]), bf, "")
if err != nil {
log.Warning("bad PEM certifcate or private key")
return err
}
serverName := blob["domain"]
ip := blob["ip"]
if serverName != "" {
err := bundle.Cert.VerifyHostname(serverName)
if err != nil {
return errors.Wrap(errors.CertificateError, errors.VerifyFailed, err)
}
}
if ip != "" {
err := bundle.Cert.VerifyHostname(ip)
if err != nil {
return errors.Wrap(errors.CertificateError, errors.VerifyFailed, err)
}
}
result = bundle
}
log.Info("wrote response")
return api.SendResponse(w, result)
}
// worker does all the parsing and validation of the certificate(s)
// contained in a single file. It first reads all the data in the
// file, then begins parsing certificates in the file. Those
// certificates are then checked for revocation.
func worker(paths chan string, bundler chan *x509.Certificate, pool *sync.WaitGroup) {
defer (*pool).Done()
for {
path, ok := <-paths
if !ok {
return
}
log.Infof("Loading %s", path)
fileData, err := ioutil.ReadFile(path)
if err != nil {
log.Warningf("%v", err)
continue
}
for {
var block *pem.Block
if len(fileData) == 0 {
break
}
block, fileData = pem.Decode(fileData)
if block == nil {
log.Warningf("%s: no PEM data found", path)
break
} else if block.Type != "CERTIFICATE" {
log.Info("Skipping non-certificate")
continue
}
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
log.Warningf("Invalid certificate: %v", err)
continue
}
log.Infof("Validating %+v", cert.Subject)
revoked, ok := revoke.VerifyCertificate(cert)
if !ok {
log.Warning("Failed to verify certificate.")
} else if !revoked {
bundler <- cert
} else {
log.Info("Skipping revoked certificate")
}
}
}
}
// check a cert against a specific CRL. Returns the same bool pair
// as revCheck.
func certIsRevokedCRL(cert *x509.Certificate, url string) (revoked, ok bool) {
crl, ok := CRLSet[url]
if ok && crl == nil {
ok = false
delete(CRLSet, url)
}
var shouldFetchCRL = true
if ok {
if !crl.HasExpired(time.Now()) {
shouldFetchCRL = false
}
}
if shouldFetchCRL {
var err error
crl, err = fetchCRL(url)
if err != nil {
log.Warningf("failed to fetch CRL: %v", err)
return false, false
}
CRLSet[url] = crl
}
for _, revoked := range crl.TBSCertList.RevokedCertificates {
if cert.SerialNumber.Cmp(revoked.SerialNumber) == 0 {
log.Info("Serial number match: intermediate is revoked.")
return true, true
}
}
return false, true
}
func scanMain(args []string, c cli.Config) (err error) {
if c.List {
printJSON(scan.Default)
} else {
if err = scan.LoadRootCAs(c.CABundleFile); err != nil {
return
}
if len(args) >= c.MaxHosts {
log.Warningf("Only scanning max-hosts=%d out of %d args given", c.MaxHosts, len(args))
args = args[:c.MaxHosts]
} else if c.CSVFile != "" {
args, err = parseCSV(args, c.CSVFile, c.MaxHosts)
if err != nil {
return
}
}
ctx := newContext(c, c.NumWorkers)
// Execute for each HOST argument given
for len(args) > 0 {
var host string
host, args, err = cli.PopFirstArgument(args)
if err != nil {
return
}
ctx.hosts <- host
}
close(ctx.hosts)
ctx.Wait()
}
return
}
func (ctx *context) copyResults(timeout time.Duration) map[string]FamilyResult {
var timedOut bool
done := make(chan bool, 1)
results := make(map[string]FamilyResult)
go func() {
for result := range ctx.resultChan {
if timedOut {
log.Debugf("Received result after timeout: %v", result)
continue
}
if results[result.Family] == nil {
results[result.Family] = make(FamilyResult)
}
results[result.Family][result.Scanner] = result.ScannerResult
}
done <- true
}()
select {
case <-done:
case <-time.After(timeout):
timedOut = true
log.Warningf("Scan timed out after %v", timeout)
}
return results
}
// serverMain is the command line entry point to the API server. It sets up a
// new HTTP server to handle sign, bundle, and validate requests.
func serverMain(args []string, c cli.Config) error {
conf = c
// serve doesn't support arguments.
if len(args) > 0 {
return errors.New("argument is provided but not defined; please refer to the usage by flag -h")
}
bundler.IntermediateStash = conf.IntDir
var err error
if err = ubiquity.LoadPlatforms(conf.Metadata); err != nil {
return err
}
if c.DBConfigFile != "" {
db, err = certdb.DBFromConfig(c.DBConfigFile)
if err != nil {
return err
}
}
log.Info("Initializing signer")
if s, err = sign.SignerFromConfigAndDB(c, db); err != nil {
log.Warningf("couldn't initialize signer: %v", err)
}
if ocspSigner, err = ocspsign.SignerFromConfig(c); err != nil {
log.Warningf("couldn't initialize ocsp signer: %v", err)
}
registerHandlers()
addr := net.JoinHostPort(conf.Address, strconv.Itoa(conf.Port))
if conf.TLSCertFile == "" || conf.TLSKeyFile == "" {
log.Info("Now listening on ", addr)
return http.ListenAndServe(addr, nil)
}
log.Info("Now listening on https://", addr)
return http.ListenAndServeTLS(addr, conf.TLSCertFile, conf.TLSKeyFile, nil)
}
// 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")
body, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Warningf("failed to read request body: %v", err)
return errors.NewBadRequest(err)
}
req := new(csr.CertificateRequest)
req.KeyRequest = csr.NewBasicKeyRequest()
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
}
// We can't handle LDAP certificates, so this checks to see if the
// URL string points to an LDAP resource so that we can ignore it.
func ldapURL(url string) bool {
u, err := neturl.Parse(url)
if err != nil {
log.Warningf("error parsing url %s: %v", url, err)
return false
}
if u.Scheme == "ldap" {
return true
}
return false
}
// registerHandlers instantiates various handlers and associate them to corresponding endpoints.
func registerHandlers() {
for path, getHandler := range endpoints {
path = v1APIPath(path)
log.Infof("Setting up '%s' endpoint", path)
if handler, err := getHandler(); err != nil {
log.Warningf("endpoint '%s' is disabled: %v", path, err)
} else {
http.Handle(path, handler)
}
}
log.Info("Handler set up complete.")
}
// Handle listens for incoming requests for CA information, and returns
// a list containing information on each root certificate.
func (h *Handler) Handle(w http.ResponseWriter, r *http.Request) error {
req := new(info.Req)
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)
}
resp, err := h.sign.Info(*req)
if err != nil {
return err
}
response := api.NewSuccessResponse(resp)
w.Header().Set("Content-Type", "application/json")
enc := json.NewEncoder(w)
return enc.Encode(response)
}
// ProcessRequest validates and processes the incoming request. It is
// a wrapper around a validator and the ParseRequest function.
func (g *Generator) ProcessRequest(req *CertificateRequest) (csr, key []byte, err error) {
log.Info("generate received request")
err = g.Validator(req)
if err != nil {
log.Warningf("invalid request: %v", err)
return
}
csr, key, err = ParseRequest(req)
if err != nil {
return nil, nil, err
}
return
}
// 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 {
if err := r.ParseForm(); err != nil {
log.Warningf("failed to parse body: %v", err)
return errors.NewBadRequest(err)
}
family := r.Form.Get("family")
scanner := r.Form.Get("scanner")
ip := r.Form.Get("ip")
timeoutStr := r.Form.Get("timeout")
var timeout time.Duration
var err error
if timeoutStr != "" {
if timeout, err = time.ParseDuration(timeoutStr); err != nil {
return errors.NewBadRequest(err)
}
if timeout < time.Second || timeout > 5*time.Minute {
return errors.NewBadRequestString("invalid timeout given")
}
} else {
timeout = time.Minute
}
host := r.Form.Get("host")
if host == "" {
log.Warningf("no host given")
return errors.NewBadRequestString("no host given")
}
results, err := scan.Default.RunScans(host, ip, family, scanner, timeout)
if err != nil {
return errors.NewBadRequest(err)
}
return json.NewEncoder(w).Encode(api.NewSuccessResponse(results))
}
// 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 req.Request == "" {
return errors.NewBadRequestString("missing parameter 'certificate_request'")
}
var cert []byte
profile, err := signer.Profile(h.signer, req.Profile)
if err != nil {
return err
}
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)
}
// 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)
req.Request = csr.New()
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
}
signReq := signer.SignRequest{
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(certBytes),
"sums": map[string]Sum{
"certificate_request": reqSum,
"certificate": certSum,
},
}
if len(req.Request.Hosts) == 0 {
return api.SendResponseWithMessage(w, result, CSRNoHostMessage,
errors.New(errors.PolicyError, errors.InvalidRequest).ErrorCode)
}
return api.SendResponse(w, result)
}
