mirror of https://github.com/tp4a/teleport
支持ssh“交互式登录”,以支持FreeBSD10等系统(默认设置为仅允许交互式登录或私钥登录方式)。
parent
98172db2f8
commit
f861da6d66
|
@ -310,34 +310,93 @@ int SshSession::_on_auth_password_request(ssh_session session, const char *user,
|
|||
return SSH_AUTH_DENIED;
|
||||
}
|
||||
|
||||
// 检查服务端支持的认证协议
|
||||
ssh_userauth_none(_this->m_srv_session, NULL);
|
||||
int auth_methods = ssh_userauth_list(_this->m_srv_session, NULL);
|
||||
//(auth_methods & SSH_AUTH_METHOD_INTERACTIVE);
|
||||
|
||||
|
||||
if (_this->m_auth_mode == TS_AUTH_MODE_PASSWORD) {
|
||||
rc = ssh_userauth_password(_this->m_srv_session, NULL, _this->m_user_auth.c_str());
|
||||
if (rc != SSH_OK) {
|
||||
EXLOGE("[ssh] can not use user/name login to real SSH server %s:%d.\n", _this->m_server_ip.c_str(), _this->m_server_port);
|
||||
if (auth_methods & SSH_AUTH_METHOD_PASSWORD) {
|
||||
rc = ssh_userauth_password(_this->m_srv_session, NULL, _this->m_user_auth.c_str());
|
||||
if (rc != SSH_AUTH_SUCCESS) {
|
||||
EXLOGE("[ssh] invalid password for password mode to login to real SSH server %s:%d.\n", _this->m_server_ip.c_str(), _this->m_server_port);
|
||||
_this->m_have_error = true;
|
||||
_this->m_retcode = SESS_STAT_ERR_AUTH_DENIED;
|
||||
return SSH_AUTH_DENIED;
|
||||
}
|
||||
}
|
||||
else if (auth_methods & SSH_AUTH_METHOD_INTERACTIVE) {
|
||||
bool is_login = false;
|
||||
for (;;) {
|
||||
rc = ssh_userauth_kbdint(_this->m_srv_session, NULL, NULL);
|
||||
if (rc != SSH_AUTH_INFO)
|
||||
break;
|
||||
|
||||
if(ssh_userauth_kbdint_getnprompts(_this->m_srv_session) != 1)
|
||||
break;
|
||||
|
||||
rc = ssh_userauth_kbdint_setanswer(_this->m_srv_session, 0, _this->m_user_auth.c_str());
|
||||
if (rc < 0)
|
||||
break;
|
||||
|
||||
// 有时候服务端会再发一个空的提示来完成交互
|
||||
rc = ssh_userauth_kbdint(_this->m_srv_session, NULL, NULL);
|
||||
if (rc == SSH_AUTH_INFO) {
|
||||
if (ssh_userauth_kbdint_getnprompts(_this->m_srv_session) != 0)
|
||||
break;
|
||||
rc = ssh_userauth_kbdint(_this->m_srv_session, NULL, NULL);
|
||||
if (rc < 0)
|
||||
break;
|
||||
}
|
||||
|
||||
if(rc == SSH_AUTH_SUCCESS)
|
||||
is_login = true;
|
||||
break;
|
||||
}
|
||||
|
||||
if (!is_login) {
|
||||
EXLOGE("[ssh] invalid password for keyboard-interactive mode to login to real SSH server %s:%d.\n", _this->m_server_ip.c_str(), _this->m_server_port);
|
||||
_this->m_have_error = true;
|
||||
_this->m_retcode = SESS_STAT_ERR_AUTH_DENIED;
|
||||
return SSH_AUTH_DENIED;
|
||||
}
|
||||
}
|
||||
else {
|
||||
EXLOGE("[ssh] real SSH server [%s:%d] does not support password or keyboard-interactive login.\n", _this->m_server_ip.c_str(), _this->m_server_port);
|
||||
_this->m_have_error = true;
|
||||
_this->m_retcode = SESS_STAT_ERR_AUTH_DENIED;
|
||||
return SSH_AUTH_DENIED;
|
||||
}
|
||||
}
|
||||
else if (_this->m_auth_mode == TS_AUTH_MODE_PRIVATE_KEY) {
|
||||
ssh_key key = NULL;
|
||||
if (SSH_OK != ssh_pki_import_privkey_base64(_this->m_user_auth.c_str(), NULL, NULL, NULL, &key)) {
|
||||
EXLOGE("[ssh] can not import private-key for auth.\n");
|
||||
_this->m_have_error = true;
|
||||
_this->m_retcode = SESS_STAT_ERR_BAD_SSH_KEY;
|
||||
return SSH_AUTH_DENIED;
|
||||
}
|
||||
if (auth_methods & SSH_AUTH_METHOD_PUBLICKEY) {
|
||||
ssh_key key = NULL;
|
||||
if (SSH_OK != ssh_pki_import_privkey_base64(_this->m_user_auth.c_str(), NULL, NULL, NULL, &key)) {
|
||||
EXLOGE("[ssh] can not import private-key for auth.\n");
|
||||
_this->m_have_error = true;
|
||||
_this->m_retcode = SESS_STAT_ERR_BAD_SSH_KEY;
|
||||
return SSH_AUTH_DENIED;
|
||||
}
|
||||
|
||||
rc = ssh_userauth_publickey(_this->m_srv_session, NULL, key);
|
||||
if (rc != SSH_OK) {
|
||||
ssh_key_free(key);
|
||||
EXLOGE("[ssh] invalid private-key for login to real SSH server %s:%d.\n", _this->m_server_ip.c_str(), _this->m_server_port);
|
||||
_this->m_have_error = true;
|
||||
_this->m_retcode = SESS_STAT_ERR_AUTH_DENIED;
|
||||
return SSH_AUTH_DENIED;
|
||||
}
|
||||
|
||||
rc = ssh_userauth_publickey(_this->m_srv_session, NULL, key);
|
||||
if (rc != SSH_OK) {
|
||||
ssh_key_free(key);
|
||||
EXLOGE("[ssh] can not use private-key login to real SSH server %s:%d.\n", _this->m_server_ip.c_str(), _this->m_server_port);
|
||||
}
|
||||
else {
|
||||
EXLOGE("[ssh] real SSH server [%s:%d] does not support public key login.\n", _this->m_server_ip.c_str(), _this->m_server_port);
|
||||
_this->m_have_error = true;
|
||||
_this->m_retcode = SESS_STAT_ERR_AUTH_DENIED;
|
||||
return SSH_AUTH_DENIED;
|
||||
}
|
||||
|
||||
ssh_key_free(key);
|
||||
}
|
||||
else if (_this->m_auth_mode == TS_AUTH_MODE_NONE)
|
||||
{
|
||||
|
|
Loading…
Reference in New Issue