Add support for managed SSH transport #minor (#814)

This change drops the (hard) dependency on libssh2 and instead uses Go's
implementation of SSH when libgit2 is not built with it.

1 files changed, 15 insertions, 0 deletions

diff --git a/credentials.go b/credentials.go
index 273de2f..2fb65d5 100644
--- a/credentials.go
+++ b/credentials.go
@@ -120,6 +120,21 @@ func (o *Credential) GetUserpassPlaintext() (username, password string, err erro
 	return
 }
 
+// GetSSHKey returns the SSH-specific key information from the Cred object.
+func (o *Credential) GetSSHKey() (username, publickey, privatekey, passphrase string, err error) {
+	if o.Type() != CredentialTypeSSHKey && o.Type() != CredentialTypeSSHMemory {
+		err = fmt.Errorf("credential is not an SSH key: %v", o.Type())
+		return
+	}
+
+	sshKeyCredPtr := (*C.git_cred_ssh_key)(unsafe.Pointer(o.ptr))
+	username = C.GoString(sshKeyCredPtr.username)
+	publickey = C.GoString(sshKeyCredPtr.publickey)
+	privatekey = C.GoString(sshKeyCredPtr.privatekey)
+	passphrase = C.GoString(sshKeyCredPtr.passphrase)
+	return
+}
+
 func NewCredentialUsername(username string) (*Credential, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()