// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *
 *  BlueZ - Bluetooth protocol stack for Linux
 *
 *  Copyright (C) 2013  Intel Corporation. All rights reserved.
 *
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <stdbool.h>

#include <glib.h>

#include "lib/bluetooth.h"
#include "lib/sco.h"
#include "lib/mgmt.h"

#include "monitor/bt.h"
#include "emulator/bthost.h"
#include "emulator/hciemu.h"

#include "src/shared/tester.h"
#include "src/shared/mgmt.h"
#include "src/shared/util.h"

struct test_data {
	const void *test_data;
	struct mgmt *mgmt;
	uint16_t mgmt_index;
	struct hciemu *hciemu;
	enum hciemu_type hciemu_type;
	unsigned int io_id;
	int sk;
	bool disable_esco;
	bool enable_codecs;
};

struct sco_client_data {
	int expect_err;
	const uint8_t *send_data;
	uint16_t data_len;
};

static void print_debug(const char *str, void *user_data)
{
	const char *prefix = user_data;

	tester_print("%s%s", prefix, str);
}

static void read_info_callback(uint8_t status, uint16_t length,
					const void *param, void *user_data)
{
	struct test_data *data = tester_get_data();
	const struct mgmt_rp_read_info *rp = param;
	char addr[18];
	uint16_t manufacturer;
	uint32_t supported_settings, current_settings;

	tester_print("Read Info callback");
	tester_print("  Status: 0x%02x", status);

	if (status || !param) {
		tester_pre_setup_failed();
		return;
	}

	ba2str(&rp->bdaddr, addr);
	manufacturer = btohs(rp->manufacturer);
	supported_settings = btohl(rp->supported_settings);
	current_settings = btohl(rp->current_settings);

	tester_print("  Address: %s", addr);
	tester_print("  Version: 0x%02x", rp->version);
	tester_print("  Manufacturer: 0x%04x", manufacturer);
	tester_print("  Supported settings: 0x%08x", supported_settings);
	tester_print("  Current settings: 0x%08x", current_settings);
	tester_print("  Class: 0x%02x%02x%02x",
			rp->dev_class[2], rp->dev_class[1], rp->dev_class[0]);
	tester_print("  Name: %s", rp->name);
	tester_print("  Short name: %s", rp->short_name);

	if (strcmp(hciemu_get_address(data->hciemu), addr)) {
		tester_pre_setup_failed();
		return;
	}

	tester_pre_setup_complete();
}

static void index_added_callback(uint16_t index, uint16_t length,
					const void *param, void *user_data)
{
	struct test_data *data = tester_get_data();

	tester_print("Index Added callback");
	tester_print("  Index: 0x%04x", index);

	data->mgmt_index = index;

	mgmt_send(data->mgmt, MGMT_OP_READ_INFO, data->mgmt_index, 0, NULL,
					read_info_callback, NULL, NULL);
}

static void index_removed_callback(uint16_t index, uint16_t length,
					const void *param, void *user_data)
{
	struct test_data *data = tester_get_data();

	tester_print("Index Removed callback");
	tester_print("  Index: 0x%04x", index);

	if (index != data->mgmt_index)
		return;

	mgmt_unregister_index(data->mgmt, data->mgmt_index);

	mgmt_unref(data->mgmt);
	data->mgmt = NULL;

	tester_post_teardown_complete();
}

static void enable_codec_callback(uint8_t status, uint16_t length,
					const void *param, void *user_data)
{
	if (status != MGMT_STATUS_SUCCESS) {
		tester_warn("Failed to enable codecs");
		tester_setup_failed();
		return;
	}

	tester_print("Enabled codecs");
}

static void read_index_list_callback(uint8_t status, uint16_t length,
					const void *param, void *user_data)
{
	struct test_data *data = tester_get_data();

	tester_print("Read Index List callback");
	tester_print("  Status: 0x%02x", status);

	if (status || !param) {
		tester_pre_setup_failed();
		return;
	}

	mgmt_register(data->mgmt, MGMT_EV_INDEX_ADDED, MGMT_INDEX_NONE,
					index_added_callback, NULL, NULL);

	mgmt_register(data->mgmt, MGMT_EV_INDEX_REMOVED, MGMT_INDEX_NONE,
					index_removed_callback, NULL, NULL);

	data->hciemu = hciemu_new(HCIEMU_TYPE_BREDRLE);
	if (!data->hciemu) {
		tester_warn("Failed to setup HCI emulation");
		tester_pre_setup_failed();
		return;
	}

	if (tester_use_debug())
		hciemu_set_debug(data->hciemu, print_debug, "hciemu: ", NULL);

	tester_print("New hciemu instance created");

	if (data->disable_esco) {
		uint8_t *features;

		tester_print("Disabling eSCO packet type support");

		features = hciemu_get_features(data->hciemu);
		if (features)
			features[3] &= ~0x80;
	}
}

static void test_pre_setup(const void *test_data)
{
	struct test_data *data = tester_get_data();

	data->mgmt = mgmt_new_default();
	if (!data->mgmt) {
		tester_warn("Failed to setup management interface");
		tester_pre_setup_failed();
		return;
	}

	if (tester_use_debug())
		mgmt_set_debug(data->mgmt, print_debug, "mgmt: ", NULL);

	mgmt_send(data->mgmt, MGMT_OP_READ_INDEX_LIST, MGMT_INDEX_NONE, 0, NULL,
					read_index_list_callback, NULL, NULL);
}

static void test_post_teardown(const void *test_data)
{
	struct test_data *data = tester_get_data();

	hciemu_unref(data->hciemu);
	data->hciemu = NULL;
}

static void test_data_free(void *test_data)
{
	struct test_data *data = test_data;

	if (data->io_id > 0)
		g_source_remove(data->io_id);

	free(data);
}

#define test_sco_full(name, data, setup, func, _disable_esco, _enable_codecs) \
	do { \
		struct test_data *user; \
		user = malloc(sizeof(struct test_data)); \
		if (!user) \
			break; \
		user->hciemu_type = HCIEMU_TYPE_BREDRLE; \
		user->io_id = 0; \
		user->sk = -1; \
		user->test_data = data; \
		user->disable_esco = _disable_esco; \
		user->enable_codecs = _enable_codecs; \
		tester_add_full(name, data, \
				test_pre_setup, setup, func, NULL, \
				test_post_teardown, 2, user, test_data_free); \
	} while (0)

#define test_sco(name, data, setup, func) \
	test_sco_full(name, data, setup, func, false, false)

#define test_sco_11(name, data, setup, func) \
	test_sco_full(name, data, setup, func, true, false)

#define test_offload_sco(name, data, setup, func) \
	test_sco_full(name, data, setup, func, false, true)

static const struct sco_client_data connect_success = {
	.expect_err = 0
};

static const struct sco_client_data connect_failure = {
	.expect_err = EOPNOTSUPP
};

static const struct sco_client_data connect_failure_reset = {
	.expect_err = ECONNRESET
};

const uint8_t data[] = {0, 1, 2, 3, 4, 5, 6, 7, 8};

static const struct sco_client_data connect_send_success = {
	.expect_err = 0,
	.data_len = sizeof(data),
	.send_data = data
};

static void client_connectable_complete(uint16_t opcode, uint8_t status,
					const void *param, uint8_t len,
					void *user_data)
{
	if (opcode != BT_HCI_CMD_WRITE_SCAN_ENABLE)
		return;

	tester_print("Client set connectable status 0x%02x", status);

	if (status)
		tester_setup_failed();
	else
		tester_setup_complete();
}

static void setup_powered_callback(uint8_t status, uint16_t length,
					const void *param, void *user_data)
{
	struct test_data *data = tester_get_data();
	struct bthost *bthost;

	if (status != MGMT_STATUS_SUCCESS) {
		tester_setup_failed();
		return;
	}

	tester_print("Controller powered on");

	bthost = hciemu_client_get_host(data->hciemu);
	bthost_set_cmd_complete_cb(bthost, client_connectable_complete, data);
	bthost_write_scan_enable(bthost, 0x03);
}

static void setup_powered(const void *test_data)
{
	struct test_data *data = tester_get_data();
	unsigned char param[] = { 0x01 };

	tester_print("Powering on controller");

	mgmt_send(data->mgmt, MGMT_OP_SET_CONNECTABLE, data->mgmt_index,
					sizeof(param), param,
					NULL, NULL, NULL);

	mgmt_send(data->mgmt, MGMT_OP_SET_SSP, data->mgmt_index,
				sizeof(param), param, NULL, NULL, NULL);

	mgmt_send(data->mgmt, MGMT_OP_SET_LE, data->mgmt_index,
				sizeof(param), param, NULL, NULL, NULL);

	if (data->enable_codecs) {
		/* a6695ace-ee7f-4fb9-881a-5fac66c629af */
		static const uint8_t uuid[16] = {
				0xaf, 0x29, 0xc6, 0x66, 0xac, 0x5f, 0x1a, 0x88,
				0xb9, 0x4f, 0x7f, 0xee, 0xce, 0x5a, 0x69, 0xa6,
		};

		struct mgmt_cp_set_exp_feature cp;

		memset(&cp, 0, sizeof(cp));
		memcpy(cp.uuid, uuid, 16);
		cp.action = 1;

		tester_print("Enabling codecs");

		mgmt_send(data->mgmt, MGMT_OP_SET_EXP_FEATURE, data->mgmt_index,
			  sizeof(cp), &cp, enable_codec_callback, NULL, NULL);
	}

	mgmt_send(data->mgmt, MGMT_OP_SET_POWERED, data->mgmt_index,
					sizeof(param), param,
					setup_powered_callback, NULL, NULL);
}

static void test_framework(const void *test_data)
{
	tester_test_passed();
}

static void test_socket(const void *test_data)
{
	int sk;

	sk = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_SCO);
	if (sk < 0) {
		tester_warn("Can't create socket: %s (%d)", strerror(errno),
									errno);
		tester_test_failed();
		return;
	}

	close(sk);

	tester_test_passed();
}

static void test_codecs_getsockopt(const void *test_data)
{
	int sk, err;
	socklen_t len;
	char buffer[255];

	sk = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_SCO);
	if (sk < 0) {
		tester_warn("Can't create socket: %s (%d)", strerror(errno),
									errno);
		tester_test_failed();
		return;
	}

	len = sizeof(buffer);
	memset(buffer, 0, len);

	err = getsockopt(sk, SOL_BLUETOOTH, BT_CODEC, buffer, &len);
	if (err < 0) {
		tester_warn("Can't get socket option : %s (%d)",
			    strerror(errno), errno);
		tester_test_failed();
		goto end;
	}

	tester_test_passed();

end:
	close(sk);
}

static void test_codecs_setsockopt(const void *test_data)
{
	int sk, err;
	char buffer[255];
	struct bt_codecs *codecs;

	sk = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_SCO);
	if (sk < 0) {
		tester_warn("Can't create socket: %s (%d)", strerror(errno),
									errno);
		tester_test_failed();
		return;
	}

	memset(buffer, 0, sizeof(buffer));

	codecs = (void *)buffer;

	codecs->codecs[0].id = 0x05;
	codecs->num_codecs = 1;
	codecs->codecs[0].data_path_id = 1;
	codecs->codecs[0].num_caps = 0x00;

	err = setsockopt(sk, SOL_BLUETOOTH, BT_CODEC, codecs, sizeof(buffer));
	if (err < 0) {
		tester_warn("Can't set socket option : %s (%d)",
			    strerror(errno), errno);
		tester_test_failed();
		goto end;
	}

	tester_test_passed();

end:
	close(sk);
}

static void test_getsockopt(const void *test_data)
{
	int sk, err;
	socklen_t len;
	struct bt_voice voice;

	sk = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_SCO);
	if (sk < 0) {
		tester_warn("Can't create socket: %s (%d)", strerror(errno),
									errno);
		tester_test_failed();
		return;
	}

	len = sizeof(voice);
	memset(&voice, 0, len);

	err = getsockopt(sk, SOL_BLUETOOTH, BT_VOICE, &voice, &len);
	if (err < 0) {
		tester_warn("Can't get socket option : %s (%d)",
							strerror(errno), errno);
		tester_test_failed();
		goto end;
	}

	if (voice.setting != BT_VOICE_CVSD_16BIT) {
		tester_warn("Invalid voice setting");
		tester_test_failed();
		goto end;
	}

	tester_test_passed();

end:
	close(sk);
}

static void test_setsockopt(const void *test_data)
{
	int sk, err;
	socklen_t len;
	struct bt_voice voice;

	sk = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_SCO);
	if (sk < 0) {
		tester_warn("Can't create socket: %s (%d)", strerror(errno),
									errno);
		tester_test_failed();
		goto end;
	}


	len = sizeof(voice);
	memset(&voice, 0, len);

	err = getsockopt(sk, SOL_BLUETOOTH, BT_VOICE, &voice, &len);
	if (err < 0) {
		tester_warn("Can't get socket option : %s (%d)",
							strerror(errno), errno);
		tester_test_failed();
		goto end;
	}

	if (voice.setting != BT_VOICE_CVSD_16BIT) {
		tester_warn("Invalid voice setting");
		tester_test_failed();
		goto end;
	}

	memset(&voice, 0, sizeof(voice));
	voice.setting = BT_VOICE_TRANSPARENT;

	err = setsockopt(sk, SOL_BLUETOOTH, BT_VOICE, &voice, sizeof(voice));
	if (err < 0) {
		tester_warn("Can't set socket option : %s (%d)",
							strerror(errno), errno);
		tester_test_failed();
		goto end;
	}

	len = sizeof(voice);
	memset(&voice, 0, len);

	err = getsockopt(sk, SOL_BLUETOOTH, BT_VOICE, &voice, &len);
	if (err < 0) {
		tester_warn("Can't get socket option : %s (%d)",
							strerror(errno), errno);
		tester_test_failed();
		goto end;
	}

	if (voice.setting != BT_VOICE_TRANSPARENT) {
		tester_warn("Invalid voice setting");
		tester_test_failed();
		goto end;
	}

	tester_test_passed();

end:
	close(sk);
}

static int create_sco_sock(struct test_data *data)
{
	const uint8_t *central_bdaddr;
	struct sockaddr_sco addr;
	int sk, err;

	sk = socket(PF_BLUETOOTH, SOCK_SEQPACKET | SOCK_NONBLOCK,
								BTPROTO_SCO);
	if (sk < 0) {
		err = -errno;
		tester_warn("Can't create socket: %s (%d)", strerror(errno),
									errno);
		return err;
	}

	central_bdaddr = hciemu_get_central_bdaddr(data->hciemu);
	if (!central_bdaddr) {
		tester_warn("No central bdaddr");
		return -ENODEV;
	}

	memset(&addr, 0, sizeof(addr));
	addr.sco_family = AF_BLUETOOTH;
	bacpy(&addr.sco_bdaddr, (void *) central_bdaddr);

	if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
		err = -errno;
		tester_warn("Can't bind socket: %s (%d)", strerror(errno),
									errno);
		close(sk);
		return err;
	}

	return sk;
}

static int connect_sco_sock(struct test_data *data, int sk)
{
	const uint8_t *client_bdaddr;
	struct sockaddr_sco addr;
	int err;

	client_bdaddr = hciemu_get_client_bdaddr(data->hciemu);
	if (!client_bdaddr) {
		tester_warn("No client bdaddr");
		return -ENODEV;
	}

	memset(&addr, 0, sizeof(addr));
	addr.sco_family = AF_BLUETOOTH;
	bacpy(&addr.sco_bdaddr, (void *) client_bdaddr);

	err = connect(sk, (struct sockaddr *) &addr, sizeof(addr));
	if (err < 0 && !(errno == EAGAIN || errno == EINPROGRESS)) {
		err = -errno;
		tester_warn("Can't connect socket: %s (%d)", strerror(errno),
									errno);
		return err;
	}

	return 0;
}

static gboolean sco_connect_cb(GIOChannel *io, GIOCondition cond,
							gpointer user_data)
{
	struct test_data *data = tester_get_data();
	const struct sco_client_data *scodata = data->test_data;
	int err, sk_err, sk;
	socklen_t len = sizeof(sk_err);

	data->io_id = 0;

	sk = g_io_channel_unix_get_fd(io);

	if (getsockopt(sk, SOL_SOCKET, SO_ERROR, &sk_err, &len) < 0)
		err = -errno;
	else
		err = -sk_err;

	if (err < 0)
		tester_warn("Connect failed: %s (%d)", strerror(-err), -err);
	else
		tester_print("Successfully connected");

	if (scodata->send_data) {
		ssize_t ret;

		tester_print("Writing %u bytes of data", scodata->data_len);

		ret = write(sk, scodata->send_data, scodata->data_len);
		if (scodata->data_len != ret) {
			tester_warn("Failed to write %u bytes: %zu %s (%d)",
					scodata->data_len, ret, strerror(errno),
					errno);
			err = -errno;
		}
	}

	if (-err != scodata->expect_err)
		tester_test_failed();
	else
		tester_test_passed();

	return FALSE;
}

static void test_connect(const void *test_data)
{
	struct test_data *data = tester_get_data();
	GIOChannel *io;
	int sk;

	sk = create_sco_sock(data);
	if (sk < 0) {
		tester_test_failed();
		return;
	}

	if (connect_sco_sock(data, sk) < 0) {
		close(sk);
		tester_test_failed();
		return;
	}

	data->sk = sk;

	io = g_io_channel_unix_new(sk);
	g_io_channel_set_close_on_unref(io, TRUE);

	data->io_id = g_io_add_watch(io, G_IO_OUT, sco_connect_cb, NULL);

	g_io_channel_unref(io);

	tester_print("Connect in progress");
}

static void test_connect_transp(const void *test_data)
{
	struct test_data *data = tester_get_data();
	const struct sco_client_data *scodata = data->test_data;
	int sk, err;
	struct bt_voice voice;

	sk = create_sco_sock(data);
	if (sk < 0) {
		tester_test_failed();
		return;
	}

	memset(&voice, 0, sizeof(voice));
	voice.setting = BT_VOICE_TRANSPARENT;

	err = setsockopt(sk, SOL_BLUETOOTH, BT_VOICE, &voice, sizeof(voice));
	if (err < 0) {
		tester_warn("Can't set socket option : %s (%d)",
							strerror(errno), errno);
		tester_test_failed();
		goto end;
	}

	err = connect_sco_sock(data, sk);

	tester_warn("Connect returned %s (%d), expected %s (%d)",
			strerror(-err), -err,
			strerror(scodata->expect_err), scodata->expect_err);

	if (-err != scodata->expect_err)
		tester_test_failed();
	else
		tester_test_passed();

end:
	close(sk);
}

static void test_connect_offload_msbc(const void *test_data)
{
	struct test_data *data = tester_get_data();
	const struct sco_client_data *scodata = data->test_data;
	int sk, err;
	int len;
	char buffer[255];
	struct bt_codecs *codecs;

	sk = create_sco_sock(data);
	if (sk < 0) {
		tester_test_failed();
		return;
	}

	len = sizeof(buffer);
	memset(buffer, 0, len);

	codecs = (void *)buffer;

	codecs->codecs[0].id = 0x05;
	codecs->num_codecs = 1;
	codecs->codecs[0].data_path_id = 1;
	codecs->codecs[0].num_caps = 0x00;

	err = setsockopt(sk, SOL_BLUETOOTH, BT_CODEC, codecs, sizeof(buffer));
	if (err < 0) {
		tester_warn("Can't set socket option : %s (%d)",
			    strerror(errno), errno);
		tester_test_failed();
		goto end;
	}
	err = connect_sco_sock(data, sk);

	tester_warn("Connect returned %s (%d), expected %s (%d)",
			strerror(-err), -err,
			strerror(scodata->expect_err), scodata->expect_err);

	if (-err != scodata->expect_err)
		tester_test_failed();
	else
		tester_test_passed();

end:
	close(sk);
}

static bool hook_simult_disc(const void *msg, uint16_t len, void *user_data)
{
	const struct bt_hci_evt_sync_conn_complete *ev = msg;
	struct test_data *data = tester_get_data();
	struct bthost *bthost;

	tester_print("Simultaneous disconnect");

	if (len != sizeof(struct bt_hci_evt_sync_conn_complete)) {
		tester_test_failed();
		return true;
	}

	/* Disconnect from local and remote sides at the same time */
	bthost = hciemu_client_get_host(data->hciemu);
	bthost_hci_disconnect(bthost, le16_to_cpu(ev->handle), 0x13);

	shutdown(data->sk, SHUT_RDWR);

	return true;
}

static bool hook_delay_cmd(const void *data, uint16_t len, void *user_data)
{
	tester_print("Delaying emulator response...");
	g_usleep(250000);
	tester_print("Delaying emulator response... Done.");
	return true;
}

static void test_connect_simult_disc(const void *test_data)
{
	struct test_data *data = tester_get_data();

	/* Kernel shall not crash, but <= 6.5-rc1 crash */
	hciemu_add_hook(data->hciemu, HCIEMU_HOOK_POST_EVT,
					BT_HCI_EVT_SYNC_CONN_COMPLETE,
					hook_simult_disc, NULL);
	hciemu_add_hook(data->hciemu, HCIEMU_HOOK_PRE_CMD,
					BT_HCI_CMD_CREATE_CONN_CANCEL,
					hook_delay_cmd, NULL);

	test_connect(test_data);
}

static bool hook_acl_disc(const void *msg, uint16_t len, void *user_data)
{
	const struct bt_hci_evt_conn_complete *ev = msg;
	struct test_data *data = tester_get_data();
	struct bthost *bthost;

	tester_print("Disconnect ACL");

	bthost = hciemu_client_get_host(data->hciemu);
	bthost_hci_disconnect(bthost, le16_to_cpu(ev->handle), 0x13);

	hciemu_flush_client_events(data->hciemu);

	return true;
}

static void test_connect_acl_disc(const void *test_data)
{
	struct test_data *data = tester_get_data();

	/* ACL disconnected before SCO is established seen.
	 * Kernel shall not crash, but <= 6.5-rc5 crash.
	 */
	hciemu_add_hook(data->hciemu, HCIEMU_HOOK_POST_EVT,
					BT_HCI_EVT_CONN_COMPLETE,
					hook_acl_disc, NULL);

	test_connect(test_data);
}

int main(int argc, char *argv[])
{
	tester_init(&argc, &argv);

	test_sco("Basic Framework - Success", NULL, setup_powered,
							test_framework);

	test_sco("Basic SCO Socket - Success", NULL, setup_powered,
							test_socket);

	test_sco("Basic SCO Get Socket Option - Success", NULL, setup_powered,
							test_getsockopt);

	test_sco("Basic SCO Set Socket Option - Success", NULL, setup_powered,
							test_setsockopt);

	test_sco("eSCO CVSD - Success", &connect_success, setup_powered,
							test_connect);

	test_sco("eSCO mSBC - Success", &connect_success, setup_powered,
							test_connect_transp);

	test_sco("eSCO Simultaneous Disconnect - Failure",
					&connect_failure_reset, setup_powered,
					test_connect_simult_disc);

	test_sco("eSCO ACL Disconnect - Failure",
					&connect_failure_reset, setup_powered,
					test_connect_acl_disc);

	test_sco_11("SCO CVSD 1.1 - Success", &connect_success, setup_powered,
							test_connect);

	test_sco_11("SCO mSBC 1.1 - Failure", &connect_failure, setup_powered,
							test_connect_transp);

	test_sco("SCO CVSD Send - Success", &connect_send_success,
					setup_powered, test_connect);

	test_offload_sco("Basic SCO Get Socket Option - Offload - Success",
				NULL, setup_powered, test_codecs_getsockopt);

	test_offload_sco("Basic SCO Set Socket Option - Offload - Success",
				NULL, setup_powered, test_codecs_setsockopt);

	test_offload_sco("eSCO mSBC - Offload - Success",
		&connect_success, setup_powered, test_connect_offload_msbc);

	return tester_run();
}
