int git_transport_ssh_with_paths(git_transport **out, git_remote *owner, void *payload)
{
#ifdef GIT_SSH
	git_strarray *paths = (git_strarray *) payload;
	git_transport *transport;
	transport_smart *smart;
	ssh_subtransport *t;
	int error;
	git_smart_subtransport_definition ssh_definition = {
		git_smart_subtransport_ssh,
		0, /* no RPC */
		NULL,
	};

	if (paths->count != 2) {
		giterr_set(GITERR_SSH, "invalid ssh paths, must be two strings");
		return GIT_EINVALIDSPEC;
	}

	if ((error = git_transport_smart(&transport, owner, &ssh_definition)) < 0)
		return error;

	smart = (transport_smart *) transport;
	t = (ssh_subtransport *) smart->wrapped;

	t->cmd_uploadpack = git__strdup(paths->strings[0]);
	GITERR_CHECK_ALLOC(t->cmd_uploadpack);
	t->cmd_receivepack = git__strdup(paths->strings[1]);
	GITERR_CHECK_ALLOC(t->cmd_receivepack);

	*out = transport;
	return 0;
#else
	GIT_UNUSED(owner);
	GIT_UNUSED(payload);

	assert(out);
	*out = NULL;

	giterr_set(GITERR_INVALID, "Cannot create SSH transport. Library was built without SSH support");
	return -1;
#endif
}

GIT_INLINE(int) attr_cache_lock(git_attr_cache *cache)
{
	GIT_UNUSED(cache); /* avoid warning if threading is off */

	if (git_mutex_lock(&cache->lock) < 0) {
		giterr_set(GITERR_OS, "Unable to get attr cache lock");
		return -1;
	}
	return 0;
}

static int cred_cb(git_cred **cred, const char *url, const char *user_from_url,
		   unsigned int allowed_types, void *payload)
{
	const char *remote_user = cl_getenv("GITTEST_REMOTE_USER");
	const char *pubkey = cl_getenv("GITTEST_REMOTE_SSH_PUBKEY");
	const char *privkey = cl_getenv("GITTEST_REMOTE_SSH_KEY");
	const char *passphrase = cl_getenv("GITTEST_REMOTE_SSH_PASSPHRASE");

	GIT_UNUSED(url); GIT_UNUSED(user_from_url); GIT_UNUSED(payload);

	if (allowed_types & GIT_CREDTYPE_USERNAME)
		return git_cred_username_new(cred, remote_user);

	if (allowed_types & GIT_CREDTYPE_SSH_KEY)
		return git_cred_ssh_key_new(cred, remote_user, pubkey, privkey, passphrase);

	giterr_set(GITERR_NET, "unexpected cred type");
	return -1;
}

static int interrupt_cb(const char *reference_name, void *payload)
{
	int *count = (int *)payload;

	GIT_UNUSED(reference_name);

	(*count)++;

	return (*count == 11);
}

static int _ssh_close(git_smart_subtransport *subtransport)
{
	ssh_subtransport *t = (ssh_subtransport *) subtransport;

	assert(!t->current_stream);

	GIT_UNUSED(t);

	return 0;
}

static int checkout_cancel_cb(
	git_checkout_notify_t why,
	const char *path,
	const git_diff_file *b,
	const git_diff_file *t,
	const git_diff_file *w,
	void *payload)
{
	struct checkout_cancel_at *ca = payload;

	GIT_UNUSED(why); GIT_UNUSED(b); GIT_UNUSED(t); GIT_UNUSED(w);

	ca->count++;

	if (!strcmp(path, ca->filename))
		return ca->error;

	return 0;
}

static int tag_list_cb(const char *tag_name, git_oid *oid, void *data)
{
	tag_filter_data *filter = (tag_filter_data *)data;
	GIT_UNUSED(oid);

	if (!*filter->pattern || p_fnmatch(filter->pattern, tag_name + GIT_REFS_TAGS_DIR_LEN, 0) == 0)
		return git_vector_insert(filter->taglist, git__strdup(tag_name + GIT_REFS_TAGS_DIR_LEN));

	return 0;
}

static int count_me(const git_config_entry *entry, void *payload)
{
	int *n = (int *) payload;

	GIT_UNUSED(entry);

	(*n)++;

	return 0;
}

static int rebase_init_merge(
	git_rebase *rebase,
	git_repository *repo,
	const git_annotated_commit *branch,
	const git_annotated_commit *upstream,
	const git_annotated_commit *onto)
{
	git_reference *head_ref = NULL;
	git_commit *onto_commit = NULL;
	git_buf reflog = GIT_BUF_INIT;
	git_buf state_path = GIT_BUF_INIT;
	int error;

	GIT_UNUSED(upstream);

	if ((error = git_buf_joinpath(&state_path, repo->path_repository, REBASE_MERGE_DIR)) < 0)
		goto done;

	rebase->state_path = git_buf_detach(&state_path);
	GITERR_CHECK_ALLOC(rebase->state_path);

	if (branch->ref_name) {
		rebase->orig_head_name = git__strdup(branch->ref_name);
		GITERR_CHECK_ALLOC(rebase->orig_head_name);
	} else {
		rebase->head_detached = 1;
	}

	rebase->onto_name = git__strdup(rebase_onto_name(onto));
	GITERR_CHECK_ALLOC(rebase->onto_name);

	rebase->quiet = rebase->options.quiet;

	git_oid_cpy(&rebase->orig_head_id, git_annotated_commit_id(branch));
	git_oid_cpy(&rebase->onto_id, git_annotated_commit_id(onto));

	if ((error = rebase_setupfiles(rebase)) < 0 ||
		(error = git_buf_printf(&reflog,
			"rebase: checkout %s", rebase_onto_name(onto))) < 0 ||
		(error = git_commit_lookup(
			&onto_commit, repo, git_annotated_commit_id(onto))) < 0 ||
		(error = git_checkout_tree(repo,
			(git_object *)onto_commit, &rebase->options.checkout_options)) < 0 ||
		(error = git_reference_create(&head_ref, repo, GIT_HEAD_FILE,
			git_annotated_commit_id(onto), 1, reflog.ptr)) < 0)
		goto done;

done:
	git_reference_free(head_ref);
	git_commit_free(onto_commit);
	git_buf_free(&reflog);
	git_buf_free(&state_path);

	return error;
}

static int default_remote_create(
		git_remote **out,
		git_repository *repo,
		const char *name,
		const char *url,
		void *payload)
{
	GIT_UNUSED(payload);

	return git_remote_create(out, repo, name, url);
}

int p_mkdir(const char *path, mode_t mode)
{
	git_win32_path buf;

	GIT_UNUSED(mode);

	if (utf8_to_16_with_errno(buf, path) < 0)
		return -1;

	return _wmkdir(buf);
}

int cb_status__single(const char *p, unsigned int s, void *payload)
{
	status_entry_single *data = (status_entry_single *)payload;

	GIT_UNUSED(p);

	data->count++;
	data->status = s;

	return 0;
}

static int checkout_conflict_count_cb(
	git_checkout_notify_t why,
	const char *path,
	const git_diff_file *b,
	const git_diff_file *t,
	const git_diff_file *w,
	void *payload)
{
	size_t *n = payload;

	GIT_UNUSED(why);
	GIT_UNUSED(path);
	GIT_UNUSED(b);
	GIT_UNUSED(t);
	GIT_UNUSED(w);

	(*n)++;

	return 0;
}

int p_mkdir(const char *path, mode_t mode)
{
	git_win32_path buf;

	GIT_UNUSED(mode);

	if (git_win32_path_from_utf8(buf, path) < 0)
		return -1;

	return _wmkdir(buf);
}

static int checkout_notify_cb(
	git_checkout_notify_t why,
	const char *path,
	const git_diff_file *baseline,
	const git_diff_file *target,
	const git_diff_file *workdir,
	void *payload)
{
	struct update_submodule_cb_payload *update_payload = payload;

	GIT_UNUSED(why);
	GIT_UNUSED(path);
	GIT_UNUSED(baseline);
	GIT_UNUSED(target);
	GIT_UNUSED(workdir);

	update_payload->checkout_notify_called = 1;

	return 0;
}

int aborting_progress_cb(
	git_stash_apply_progress_t progress,
	void *payload)
{
	GIT_UNUSED(payload);

	if (progress == GIT_STASH_APPLY_PROGRESS_ANALYZE_MODIFIED)
		return -44;

	return 0;
}

// callback: tries the access_token passed in through the payload ONCE
//           and returns GIT_EAUTH if called for a second time
int cb_cred_access_token(git_cred **out, const char *url, const char *username_from_url,
  unsigned int allowed_types, void *payload) {

  GIT_UNUSED(url);
  GIT_UNUSED(username_from_url);

  if (allowed_types & GIT_CREDTYPE_USERPASS_PLAINTEXT) {
    struct credentials_s *credentials = payload;

    if (credentials->count > 0) {
      git_error_set_str(GIT_ERROR_CALLBACK, "Invalid token");
      return GIT_EAUTH;
    } else {
      credentials->count++;
      return git_cred_userpass_plaintext_new(out, "x-access-token", credentials->access_token);
    }
  }

  return GIT_PASSTHROUGH;
}

int git_tls_stream_new(git_stream **out, const char *host, const char *port)
{

	if (tls_ctor)
		return tls_ctor(out, host, port);

#ifdef GIT_SECURE_TRANSPORT
	return git_stransport_stream_new(out, host, port);
#elif defined(GIT_OPENSSL)
	return git_openssl_stream_new(out, host, port);
#elif defined(GIT_MBEDTLS)
	return git_mbedtls_stream_new(out, host, port);
#else
	GIT_UNUSED(out);
	GIT_UNUSED(host);
	GIT_UNUSED(port);

	giterr_set(GITERR_SSL, "there is no TLS stream available");
	return -1;
#endif
}

static int notify_cb__basic(
	const git_diff *diff_so_far,
	const git_diff_delta *delta_to_add,
	const char *matched_pathspec,
	void *payload)
{
	basic_payload *exp = (basic_payload *)payload;
	basic_payload *e;

	GIT_UNUSED(diff_so_far);
	GIT_UNUSED(matched_pathspec);

	for (e = exp; e->path; e++) {
		if (strcmp(e->path, delta_to_add->new_file.path) == 0) {
			cl_assert_equal_i(e->t, delta_to_add->status);
			return 0;
		}
	}
	cl_assert(0);
	return GIT_ENOTFOUND;
}

static int winhttp_uploadpack(
	winhttp_subtransport *t,
	winhttp_stream *s)
{
	GIT_UNUSED(t);

	s->service = upload_pack_service;
	s->service_url = upload_pack_service_url;
	s->verb = post_verb;

	return 0;
}