Vendor cfssl and cfssljson

vendor/github.com/cloudflare/cfssl/cli/gencsr/gencsr.go

@@ -0,0 +1,99 @@
+// Package gencsr implements the gencsr command.
+package gencsr
+
+import (
+	"encoding/json"
+	"errors"
+
+	"github.com/cloudflare/cfssl/cli"
+	"github.com/cloudflare/cfssl/csr"
+	"github.com/cloudflare/cfssl/helpers"
+	"github.com/cloudflare/cfssl/signer"
+)
+
+var gencsrUsageText = `cfssl gencsr -- generate a csr from a private key with existing CSR json specification or certificate
+
+Usage of genkey:
+        cfssl gencsr -key private_key_file [-host hostname_override] CSRJSON
+        cfssl gencsr -key private_key_file [-host hostname_override] -cert certificate_file
+
+Arguments:
+        CSRJSON:    JSON file containing the request, use '-' for reading JSON from stdin
+
+Flags:
+`
+
+var gencsrFlags = []string{"key", "cert"}
+
+func gencsrMain(args []string, c cli.Config) (err error) {
+	if c.KeyFile == "" {
+		return errors.New("private key file is required through '-key', please check with usage")
+	}
+
+	keyBytes, err := helpers.ReadBytes(c.KeyFile)
+	if err != nil {
+		return err
+	}
+
+	key, err := helpers.ParsePrivateKeyPEM(keyBytes)
+	if err != nil {
+		return err
+	}
+
+	// prepare a stub CertificateRequest
+	req := &csr.CertificateRequest{
+		KeyRequest: csr.NewBasicKeyRequest(),
+	}
+
+	if c.CertFile != "" {
+		if len(args) > 0 {
+			return errors.New("no argument is accepted with '-cert', please check with usage")
+		}
+
+		certBytes, err := helpers.ReadBytes(c.CertFile)
+		if err != nil {
+			return err
+		}
+
+		cert, err := helpers.ParseCertificatePEM(certBytes)
+		if err != nil {
+			return err
+		}
+
+		req = csr.ExtractCertificateRequest(cert)
+	} else {
+		csrFile, args, err := cli.PopFirstArgument(args)
+		if err != nil {
+			return err
+		}
+
+		if len(args) > 0 {
+			return errors.New("only one argument is accepted, please check with usage")
+		}
+
+		csrFileBytes, err := cli.ReadStdin(csrFile)
+		if err != nil {
+			return err
+		}
+
+		err = json.Unmarshal(csrFileBytes, req)
+		if err != nil {
+			return err
+		}
+	}
+
+	if c.Hostname != "" {
+		req.Hosts = signer.SplitHosts(c.Hostname)
+	}
+
+	csrBytes, err := csr.Generate(key, req)
+	if err != nil {
+		return err
+	}
+
+	cli.PrintCert(keyBytes, csrBytes, nil)
+	return nil
+}
+
+// Command assembles the definition of Command 'gencsr'
+var Command = &cli.Command{UsageText: gencsrUsageText, Flags: gencsrFlags, Main: gencsrMain}