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/* Bluetooth Mesh */
/*
* SPDX-FileCopyrightText: 2017 Intel Corporation
* SPDX-FileContributor: 2018-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdint.h>
#include <stdbool.h>
#include <errno.h>
#include "mesh.h"
#include "tag.h"
#include "adv.h"
#include "lpn.h"
#include "friend.h"
#include "transport.h"
#include "access.h"
#include "foundation.h"
#include "mesh/main.h"
#include "mesh/common.h"
#include "fast_prov.h"
#include "pvnr_mgmt.h"
#if CONFIG_BLE_MESH_V11_SUPPORT
#include "mesh_v1.1/utils.h"
#endif
#define BLE_MESH_SDU_MAX_LEN 384
extern const struct bt_mesh_comp *comp_0;
static uint16_t dev_primary_addr;
static int model_send(struct bt_mesh_model *model,
struct bt_mesh_net_tx *tx, bool implicit_bind,
struct net_buf_simple *msg,
const struct bt_mesh_send_cb *cb, void *cb_data);
void bt_mesh_model_foreach(void (*func)(struct bt_mesh_model *mod,
struct bt_mesh_elem *elem,
bool vnd, bool primary,
void *user_data),
void *user_data)
{
int i, j;
if (comp_0 == NULL) {
BT_ERR("Invalid device composition");
return;
}
for (i = 0; i < comp_0->elem_count; i++) {
struct bt_mesh_elem *elem = &comp_0->elem[i];
for (j = 0; j < elem->model_count; j++) {
struct bt_mesh_model *model = &elem->models[j];
func(model, elem, false, i == 0, user_data);
}
for (j = 0; j < elem->vnd_model_count; j++) {
struct bt_mesh_model *model = &elem->vnd_models[j];
func(model, elem, true, i == 0, user_data);
}
}
}
int32_t bt_mesh_model_pub_period_get(struct bt_mesh_model *mod)
{
int period = 0;
if (!mod->pub) {
BT_ERR("Model has no publication support");
return 0;
}
switch (mod->pub->period >> 6) {
case 0x00:
/* 1 step is 100 ms */
period = K_MSEC((mod->pub->period & BIT_MASK(6)) * 100U);
break;
case 0x01:
/* 1 step is 1 second */
period = K_SECONDS(mod->pub->period & BIT_MASK(6));
break;
case 0x02:
/* 1 step is 10 seconds */
period = K_SECONDS((mod->pub->period & BIT_MASK(6)) * 10U);
break;
case 0x03:
/* 1 step is 10 minutes */
period = K_MINUTES((mod->pub->period & BIT_MASK(6)) * 10U);
break;
default:
BT_ERR("Unknown model publication period");
return 0;
}
if (mod->pub->fast_period) {
return period >> mod->pub->period_div;
}
return period;
}
static int32_t next_period(struct bt_mesh_model *mod)
{
struct bt_mesh_model_pub *pub = mod->pub;
uint32_t elapsed = 0U, period = 0U;
if (!pub) {
BT_ERR("Model has no publication support");
return -ENOTSUP;
}
period = bt_mesh_model_pub_period_get(mod);
if (!period) {
return 0;
}
elapsed = k_uptime_get_32() - pub->period_start;
BT_INFO("Publishing took %ums", elapsed);
if (elapsed >= period) {
BT_WARN("Publication sending took longer than the period");
/* Return smallest positive number since 0 means disabled */
return K_MSEC(1);
}
return period - elapsed;
}
static void publish_sent(int err, void *user_data)
{
struct bt_mesh_model *mod = user_data;
int32_t delay = 0;
BT_DBG("err %d", err);
if (!mod->pub) {
BT_ERR("Model has no publication support");
return;
}
if (mod->pub->count) {
delay = BLE_MESH_PUB_TRANSMIT_INT(mod->pub->retransmit);
} else {
delay = next_period(mod);
}
if (delay) {
BT_INFO("Publishing next time in %dms", delay);
k_delayed_work_submit(&mod->pub->timer, delay);
}
}
static void publish_start(uint16_t duration, int err, void *user_data)
{
struct bt_mesh_model *mod = user_data;
struct bt_mesh_model_pub *pub = mod->pub;
if (err) {
BT_ERR("Failed to publish: err %d", err);
return;
}
/* Initialize the timestamp for the beginning of a new period */
if (pub->count == BLE_MESH_PUB_TRANSMIT_COUNT(pub->retransmit)) {
pub->period_start = k_uptime_get_32();
}
}
static const struct bt_mesh_send_cb pub_sent_cb = {
.start = publish_start,
.end = publish_sent,
};
static int publish_retransmit(struct bt_mesh_model *mod)
{
struct bt_mesh_model_pub *pub = mod->pub;
struct bt_mesh_app_key *key = NULL;
struct net_buf_simple *sdu = NULL;
struct bt_mesh_msg_ctx ctx = {0};
struct bt_mesh_net_tx tx = {
.ctx = &ctx,
.src = bt_mesh_model_elem(mod)->addr,
.xmit = bt_mesh_net_transmit_get(),
};
int err = 0;
if (!pub || !pub->msg) {
BT_ERR("Model has no publication support");
return -ENOTSUP;
}
key = bt_mesh_app_key_get(pub->key);
if (!key) {
BT_ERR("Publish, AppKey 0x%03x not found", pub->key);
return -EADDRNOTAVAIL;
}
tx.sub = bt_mesh_subnet_get(key->net_idx);
if (!tx.sub) {
BT_ERR("Publish, NetKey 0x%04x not found", key->net_idx);
return -EADDRNOTAVAIL;
}
ctx.addr = pub->addr;
ctx.net_idx = key->net_idx;
ctx.app_idx = key->app_idx;
ctx.send_ttl = pub->ttl;
ctx.send_cred = pub->cred ? BLE_MESH_FRIENDSHIP_CRED : BLE_MESH_FLOODING_CRED;
ctx.send_szmic = pub->send_szmic;
if (pub->send_rel) {
/* Tag with send-segmented */
ctx.send_tag |= BLE_MESH_TAG_SEND_SEGMENTED;
}
#if CONFIG_BLE_MESH_DF_SRV
bt_mesh_model_pub_use_directed(&tx, pub->directed_pub_policy);
#endif
sdu = bt_mesh_alloc_buf(pub->msg->len + BLE_MESH_MIC_LONG);
if (!sdu) {
BT_ERR("%s, Out of memory", __func__);
return -ENOMEM;
}
net_buf_simple_add_mem(sdu, pub->msg->data, pub->msg->len);
pub->count--;
err = model_send(mod, &tx, true, sdu, &pub_sent_cb, mod);
bt_mesh_free_buf(sdu);
return err;
}
static void publish_retransmit_end(int err, struct bt_mesh_model_pub *pub)
{
/* Cancel all retransmits for this publish attempt */
pub->count = 0U;
/* Make sure the publish timer gets reset */
publish_sent(err, pub->mod);
}
static void mod_publish(struct k_work *work)
{
struct bt_mesh_model_pub *pub = CONTAINER_OF(work,
struct bt_mesh_model_pub,
timer.work);
int32_t period_ms = 0;
int err = 0;
period_ms = bt_mesh_model_pub_period_get(pub->mod);
BT_INFO("Publish period %u ms", period_ms);
if (pub->count) {
err = publish_retransmit(pub->mod);
if (err) {
BT_ERR("Failed to retransmit (err %d)", err);
pub->count = 0U;
/* Continue with normal publication */
if (period_ms) {
k_delayed_work_submit(&pub->timer, period_ms);
}
}
return;
}
if (!period_ms) {
return;
}
/* Callback the model publish update event to the application layer.
* In the event, users can update the context of the publish message
* which will be published in the next period.
*/
if (pub->update && pub->update(pub->mod)) {
/* Cancel this publish attempt. */
BT_ERR("Update failed, skipping publish (err %d)", err);
pub->period_start = k_uptime_get_32();
publish_retransmit_end(err, pub);
return;
}
err = bt_mesh_model_publish(pub->mod);
if (err) {
BT_ERR("Publishing failed (err %d)", err);
}
}
struct bt_mesh_elem *bt_mesh_model_elem(struct bt_mesh_model *mod)
{
return &comp_0->elem[mod->elem_idx];
}
struct bt_mesh_model *bt_mesh_model_get(bool vnd, uint8_t elem_idx, uint8_t mod_idx)
{
struct bt_mesh_elem *elem = NULL;
if (!comp_0) {
BT_ERR("comp_0 not initialized");
return NULL;
}
if (elem_idx >= comp_0->elem_count) {
BT_ERR("Invalid element index %u", elem_idx);
return NULL;
}
elem = &comp_0->elem[elem_idx];
if (vnd) {
if (mod_idx >= elem->vnd_model_count) {
BT_ERR("Invalid vendor model index %u", mod_idx);
return NULL;
}
return &elem->vnd_models[mod_idx];
} else {
if (mod_idx >= elem->model_count) {
BT_ERR("Invalid SIG model index %u", mod_idx);
return NULL;
}
return &elem->models[mod_idx];
}
}
static void mod_init(struct bt_mesh_model *mod, struct bt_mesh_elem *elem,
bool vnd, bool primary, void *user_data)
{
int *err = user_data;
int i;
if (!user_data) {
BT_ERR("Invalid model init user data");
return;
}
if (*err) {
BT_ERR("Model init failed (err %d)", *err);
return;
}
mod->elem = elem;
if (mod->pub) {
mod->pub->mod = mod;
k_delayed_work_init(&mod->pub->timer, mod_publish);
}
for (i = 0; i < ARRAY_SIZE(mod->keys); i++) {
mod->keys[i] = BLE_MESH_KEY_UNUSED;
}
mod->flags = 0;
mod->elem_idx = elem - comp_0->elem;
if (vnd) {
mod->model_idx = mod - elem->vnd_models;
} else {
mod->model_idx = mod - elem->models;
}
if (vnd) {
return;
}
if (mod->cb && mod->cb->init) {
*err = mod->cb->init(mod);
}
}
int bt_mesh_comp_register(const struct bt_mesh_comp *comp)
{
int err = 0;
/* There must be at least one element */
if (!comp->elem_count) {
return -EINVAL;
}
comp_0 = comp;
bt_mesh_model_foreach(mod_init, &err);
return err;
}
#if CONFIG_BLE_MESH_DEINIT
static void mod_deinit(struct bt_mesh_model *mod, struct bt_mesh_elem *elem,
bool vnd, bool primary, void *user_data)
{
int *err = user_data;
int i;
if (!user_data) {
BT_ERR("Invalid model deinit user data");
return;
}
if (*err) {
BT_ERR("Model deinit failed (err %d)", *err);
return;
}
mod->elem = NULL;
if (mod->pub) {
mod->pub->mod = NULL;
k_delayed_work_free(&mod->pub->timer);
}
for (i = 0; i < ARRAY_SIZE(mod->keys); i++) {
mod->keys[i] = BLE_MESH_KEY_UNUSED;
}
mod->flags = 0U;
mod->elem_idx = 0U;
mod->model_idx = 0U;
if (vnd) {
return;
}
if (mod->cb && mod->cb->deinit) {
*err = mod->cb->deinit(mod);
}
}
int bt_mesh_comp_deregister(void)
{
int err = 0;
if (comp_0 == NULL) {
return -EINVAL;
}
bt_mesh_model_foreach(mod_deinit, &err);
comp_0 = NULL;
return err;
}
#endif /* CONFIG_BLE_MESH_DEINIT */
void bt_mesh_comp_provision(uint16_t addr)
{
int i;
dev_primary_addr = addr;
BT_INFO("Primary address 0x%04x, element count %u", addr, comp_0->elem_count);
for (i = 0; i < comp_0->elem_count; i++) {
struct bt_mesh_elem *elem = &comp_0->elem[i];
elem->addr = addr++;
BT_DBG("addr 0x%04x mod_count %u vnd_mod_count %u",
elem->addr, elem->model_count, elem->vnd_model_count);
}
}
void bt_mesh_comp_unprovision(void)
{
dev_primary_addr = BLE_MESH_ADDR_UNASSIGNED;
}
uint16_t bt_mesh_primary_addr(void)
{
return dev_primary_addr;
}
uint16_t *bt_mesh_model_find_group(struct bt_mesh_model *mod, uint16_t addr)
{
int i;
for (i = 0; i < ARRAY_SIZE(mod->groups); i++) {
if (mod->groups[i] == addr) {
return &mod->groups[i];
}
}
return NULL;
}
static struct bt_mesh_model *bt_mesh_elem_find_group(struct bt_mesh_elem *elem,
uint16_t group_addr)
{
struct bt_mesh_model *model = NULL;
uint16_t *match = NULL;
int i;
for (i = 0; i < elem->model_count; i++) {
model = &elem->models[i];
match = bt_mesh_model_find_group(model, group_addr);
if (match) {
return model;
}
}
for (i = 0; i < elem->vnd_model_count; i++) {
model = &elem->vnd_models[i];
match = bt_mesh_model_find_group(model, group_addr);
if (match) {
return model;
}
}
return NULL;
}
struct bt_mesh_elem *bt_mesh_elem_find(uint16_t addr)
{
uint16_t index = 0U;
if (BLE_MESH_ADDR_IS_UNICAST(addr)) {
index = (addr - comp_0->elem[0].addr);
if (index < comp_0->elem_count) {
return &comp_0->elem[index];
}
return NULL;
}
for (index = 0; index < comp_0->elem_count; index++) {
struct bt_mesh_elem *elem = &comp_0->elem[index];
if (bt_mesh_elem_find_group(elem, addr)) {
return elem;
}
}
return NULL;
}
uint8_t bt_mesh_elem_count(void)
{
return comp_0->elem_count;
}
static bool model_has_key(struct bt_mesh_model *mod, uint16_t key)
{
int i;
for (i = 0; i < ARRAY_SIZE(mod->keys); i++) {
if (mod->keys[i] == key) {
return true;
}
}
return false;
}
static bool model_has_dst(struct bt_mesh_model *model,
struct bt_mesh_subnet *sub,
uint16_t dst)
{
if (BLE_MESH_ADDR_IS_UNICAST(dst)) {
return (comp_0->elem[model->elem_idx].addr == dst);
}
if (BLE_MESH_ADDR_IS_GROUP(dst) || BLE_MESH_ADDR_IS_VIRTUAL(dst)) {
return !!bt_mesh_model_find_group(model, dst);
}
return (model->elem_idx == 0 && (bt_mesh_fixed_group_match(dst) ||
bt_mesh_fixed_direct_match(sub, dst)));
}
static const struct bt_mesh_model_op *find_op(struct bt_mesh_model *models,
uint8_t model_count, uint32_t opcode,
struct bt_mesh_model **model)
{
int i;
for (i = 0; i < model_count; i++) {
const struct bt_mesh_model_op *op;
*model = &models[i];
for (op = (*model)->op; op->func; op++) {
if (op->opcode == opcode) {
return op;
}
}
}
*model = NULL;
return NULL;
}
static int get_opcode(struct net_buf_simple *buf, uint32_t *opcode, bool pull_buf)
{
switch (buf->data[0] >> 6) {
case 0x00:
case 0x01:
if (buf->data[0] == 0x7f) {
BT_ERR("Ignoring RFU OpCode");
return -EINVAL;
}
*opcode = pull_buf ? net_buf_simple_pull_u8(buf) : buf->data[0];
return 0;
case 0x02:
if (buf->len < 2) {
BT_ERR("Too short payload for 2-octet OpCode");
return -EINVAL;
}
*opcode = pull_buf ? net_buf_simple_pull_be16(buf) : sys_get_be16(buf->data);
return 0;
case 0x03:
if (buf->len < 3) {
BT_ERR("Too short payload for 3-octet OpCode");
return -EINVAL;
}
if (pull_buf) {
*opcode = net_buf_simple_pull_u8(buf) << 16;
/* Using LE for the CID since the model layer is defined as
* little-endian in the mesh spec and using BT_MESH_MODEL_OP_3
* will declare the opcode in this way.
*/
*opcode |= net_buf_simple_pull_le16(buf);
} else {
*opcode = buf->data[0] << 16 | sys_get_le16(&buf->data[1]);
}
return 0;
}
return -EINVAL;
}
int bt_mesh_get_opcode(struct net_buf_simple *buf,
uint32_t *opcode, bool pull_buf)
{
if (buf == NULL || buf->len == 0 || opcode == NULL) {
BT_ERR("%s, Invalid parameter", __func__);
return -EINVAL;
}
return get_opcode(buf, opcode, pull_buf);
}
bool bt_mesh_fixed_group_match(uint16_t addr)
{
/* Check for fixed group addresses */
switch (addr) {
case BLE_MESH_ADDR_ALL_NODES:
return true;
case BLE_MESH_ADDR_PROXIES:
return (bt_mesh_gatt_proxy_get() == BLE_MESH_GATT_PROXY_ENABLED);
case BLE_MESH_ADDR_FRIENDS:
return (bt_mesh_friend_get() == BLE_MESH_FRIEND_ENABLED);
case BLE_MESH_ADDR_RELAYS:
return (bt_mesh_relay_get() == BLE_MESH_RELAY_ENABLED);
default:
return false;
}
}
bool bt_mesh_fixed_direct_match(struct bt_mesh_subnet *sub, uint16_t addr)
{
/* A message sent to the all-directed-forwarding-nodes address
* shall be processed by the primary element of all nodes that
* have directed forwarding functionality enabled.
*/
#if CONFIG_BLE_MESH_DF_SRV
if (addr == BLE_MESH_ADDR_DIRECTS && sub &&
sub->directed_forwarding == BLE_MESH_DIRECTED_FORWARDING_ENABLED) {
return true;
}
#endif
return false;
}
void bt_mesh_model_recv(struct bt_mesh_net_rx *rx, struct net_buf_simple *buf)
{
struct bt_mesh_model *models = NULL, *model = NULL;
const struct bt_mesh_model_op *op = NULL;
uint32_t opcode = 0U;
uint8_t count = 0U;
int i;
BT_INFO("recv, app_idx 0x%04x src 0x%04x dst 0x%04x", rx->ctx.app_idx,
rx->ctx.addr, rx->ctx.recv_dst);
BT_INFO("recv, len %u: %s", buf->len, bt_hex(buf->data, buf->len));
if (get_opcode(buf, &opcode, true) < 0) {
BT_WARN("Unable to decode OpCode");
return;
}
BT_DBG("OpCode 0x%08x", opcode);
for (i = 0; i < comp_0->elem_count; i++) {
struct bt_mesh_elem *elem = &comp_0->elem[i];
struct net_buf_simple_state state = {0};
/* SIG models cannot contain 3-byte (vendor) OpCodes, and
* vendor models cannot contain SIG (1- or 2-byte) OpCodes, so
* we only need to do the lookup in one of the model lists.
*/
if (BLE_MESH_MODEL_OP_LEN(opcode) < 3) {
models = elem->models;
count = elem->model_count;
} else {
models = elem->vnd_models;
count = elem->vnd_model_count;
}
op = find_op(models, count, opcode, &model);
if (!op) {
BT_DBG("No OpCode 0x%08x for elem %d", opcode, i);
continue;
}
if (!model_has_key(model, rx->ctx.app_idx)) {
continue;
}
if (!model_has_dst(model, rx->sub, rx->ctx.recv_dst)) {
continue;
}
if (buf->len < op->min_len) {
BT_ERR("Too short message for OpCode 0x%08x", opcode);
continue;
}
/* The following operation is added by Espressif.
* Update the "recv_op" with the opcode got from the buf;
*/
rx->ctx.recv_op = opcode;
/* The message is transmitted by a model in response to a message that
* it has received.
*
* The TTL field shall be set to the value of the Default TTL state.
*
* The response message shall use master security credentials. However,
* the security credentials may be changed by a lower layer unless the
* received message uses the master security credentials. If the received
* message uses master security credentials, then the response message
* shall be tagged with the immutable-credentials tag, and the security
* credentials will not be changed by any lower layer.
*/
rx->ctx.send_ttl = BLE_MESH_TTL_DEFAULT;
if (rx->ctx.recv_cred == BLE_MESH_FLOODING_CRED) {
rx->ctx.send_tag |= BLE_MESH_TAG_IMMUTABLE_CRED;
rx->ctx.send_cred = BLE_MESH_FLOODING_CRED;
}
/* The callback will likely parse the buffer, so store
* the parsing state in case multiple models receive
* the message.
*/
net_buf_simple_save(buf, &state);
op->func(model, &rx->ctx, buf);
net_buf_simple_restore(buf, &state);
}
}
void bt_mesh_model_msg_init(struct net_buf_simple *msg, uint32_t opcode)
{
net_buf_simple_init(msg, 0);
switch (BLE_MESH_MODEL_OP_LEN(opcode)) {
case 1:
net_buf_simple_add_u8(msg, opcode);
break;
case 2:
net_buf_simple_add_be16(msg, opcode);
break;
case 3:
net_buf_simple_add_u8(msg, ((opcode >> 16) & 0xff));
/* Using LE for the CID since the model layer is defined as
* little-endian in the mesh spec and using BT_MESH_MODEL_OP_3
* will declare the opcode in this way.
*/
net_buf_simple_add_le16(msg, opcode & 0xffff);
break;
default:
BT_WARN("Unknown opcode format");
break;
}
}
static bool ready_to_send(uint16_t dst)
{
if (IS_ENABLED(CONFIG_BLE_MESH_NODE) && bt_mesh_is_provisioned()) {
return true;
}
if (IS_ENABLED(CONFIG_BLE_MESH_PROVISIONER) && bt_mesh_is_provisioner_en()) {
if (bt_mesh_provisioner_check_msg_dst(dst) == false &&
bt_mesh_elem_find(dst) == false) {
BT_ERR("Failed to find DST 0x%04x", dst);
return false;
}
return true;
}
return false;
}
#if !CONFIG_BLE_MESH_V11_SUPPORT
static bool use_friend_cred(uint16_t net_idx, uint16_t dst)
{
/* Currently LPN only supports using NetKey in bt_mesh.sub[0] */
if (IS_ENABLED(CONFIG_BLE_MESH_LOW_POWER) &&
net_idx == 0 &&
bt_mesh_lpn_match(dst)) {
return true;
}
if (IS_ENABLED(CONFIG_BLE_MESH_FRIEND) &&
bt_mesh_friend_match(net_idx, dst)) {
return true;
}
return false;
}
bool bt_mesh_valid_security_cred(struct bt_mesh_net_tx *tx)
{
/* If the message is tagged with immutable-credentials,
* then the security credentials shall not be changed
* in lower layers.
* If not, later a better security credentials could be
* chosen for the message.
*/
if (!bt_mesh_tag_immutable_cred(tx->ctx->send_tag)) {
return true;
}
if (tx->ctx->send_cred > BLE_MESH_FRIENDSHIP_CRED) {
return false;
}
if (tx->ctx->send_cred == BLE_MESH_FRIENDSHIP_CRED &&
!use_friend_cred(tx->ctx->net_idx, tx->ctx->addr)) {
return false;
}
return true;
}
void bt_mesh_choose_better_security_cred(struct bt_mesh_net_tx *tx)
{
uint8_t send_cred = 0U;
uint8_t send_tag = 0U;
uint16_t net_idx = 0U;
uint16_t addr = 0U;
send_cred = tx->ctx->send_cred;
send_tag = tx->ctx->send_tag;
net_idx = tx->ctx->net_idx;
addr = tx->ctx->addr;
/* If the message is tagged with immutable-credentials,
* then the security credentials shall not be changed.
*/
if (bt_mesh_tag_immutable_cred(send_tag)) {
return;
}
if (send_cred > BLE_MESH_FRIENDSHIP_CRED) {
BT_INFO("Use managed flooding security credentials");
tx->ctx->send_cred = BLE_MESH_FLOODING_CRED;
return;
}
if (send_cred == BLE_MESH_FRIENDSHIP_CRED) {
if (!use_friend_cred(net_idx, addr)) {
BT_INFO("Use managed flooding security credentials");
tx->ctx->send_cred = BLE_MESH_FLOODING_CRED;
tx->ctx->send_tag = send_tag | BLE_MESH_TAG_IMMUTABLE_CRED;
} else {
/* TODO:
* For LPN, do we need to change the friendship security
* credentials to managed flooding credentials?
* If changed, this could increase the possibility that
* the corresponding Friend node receives this message.
*/
}
return;
}
/* If the message is destinated to a LPN, the following could be
* introduced to send the message with the friendship credentials.
*
* For LPN, this optimization should not be introduced, since it
* may cause the message failed to received by the Friend node,
* using friendship credentials will make the message can not be
* relayed by other mesh nodes.
*/
if (IS_ENABLED(CONFIG_BLE_MESH_FRIEND) &&
BLE_MESH_ADDR_IS_UNICAST(addr) &&
bt_mesh_friend_match(net_idx, addr)) {
BT_INFO("Use friendship security credentials");
tx->ctx->send_cred = BLE_MESH_FRIENDSHIP_CRED;
tx->ctx->send_tag = send_tag | BLE_MESH_TAG_IMMUTABLE_CRED;
return;
}
/**
* Spec 3.7.3.1
* The Low power node in friendship should use friendship security
* material.
*
* But in Spec 3.6.6.2
* Depending on the value of the Publish Friendship Credentials Flag
* (see Section 4.2.3.4), the Low Power node model publishes messages
* using either the friendship security credentials or the managed
* flooding security credentials (see Section 3.9.6.3.1).
*
* So use the BLE_MESH_TAG_IMMUTABLE_CRED to indicate that the
* credentials of the message should not be changed when the
* message is sent by model publishing, even though the spec
* didn't require this flag to be set when model publishing.
*/
#if CONFIG_BLE_MESH_LOW_POWER
if (BLE_MESH_ADDR_IS_UNICAST(addr) &&
bt_mesh.lpn.frnd == addr &&
!bt_mesh_tag_immutable_cred(send_tag)) {
tx->ctx->send_cred = BLE_MESH_FRIENDSHIP_CRED;
tx->ctx->send_tag = send_tag | BLE_MESH_TAG_IMMUTABLE_CRED;
return;
}
#endif
}
#endif /* !CONFIG_BLE_MESH_V11_SUPPORT */
static int model_send(struct bt_mesh_model *model,
struct bt_mesh_net_tx *tx, bool implicit_bind,
struct net_buf_simple *msg,
const struct bt_mesh_send_cb *cb, void *cb_data)
{
int err = 0;
BT_INFO("send, app_idx 0x%04x src 0x%04x dst 0x%04x",
tx->ctx->app_idx, tx->src, tx->ctx->addr);
BT_INFO("send, len %u: %s", msg->len, bt_hex(msg->data, msg->len));
if (ready_to_send(tx->ctx->addr) == false) {
BT_ERR("Not ready to send");
return -EINVAL;
}
if (tx->ctx->send_ttl != BLE_MESH_TTL_DEFAULT &&
tx->ctx->send_ttl > BLE_MESH_TTL_MAX) {
BT_ERR("Too big send TTL 0x%02x", tx->ctx->send_ttl);
return -EINVAL;
}
if (net_buf_simple_tailroom(msg) < BLE_MESH_MIC_SHORT) {
BT_ERR("Not enough tailroom for TransMIC");
return -EINVAL;
}
if (msg->len > MIN(BLE_MESH_TX_SDU_MAX, BLE_MESH_SDU_MAX_LEN) - BLE_MESH_MIC_SHORT) {
BT_ERR("Too big message (len %d)", msg->len);
return -EMSGSIZE;
}
if (!implicit_bind && !model_has_key(model, tx->ctx->app_idx)) {
BT_ERR("Model not bound to AppKey 0x%04x", tx->ctx->app_idx);
return -EINVAL;
}
if (bt_mesh_valid_security_cred(tx) == false) {
BT_ERR("Can not use security cred 0x%02x", tx->ctx->send_cred);
return -EIO;
}
bt_mesh_choose_better_security_cred(tx);
err = bt_mesh_trans_send(tx, msg, cb, cb_data);
#if CONFIG_BLE_MESH_DF_SRV
bt_mesh_is_directed_path_needed(tx);
#endif
return err;
}
int bt_mesh_model_send_implicit(struct bt_mesh_model *model,
struct bt_mesh_msg_ctx *ctx,bool implicit_bind,
struct net_buf_simple *msg,
const struct bt_mesh_send_cb *cb, void *cb_data)
{
struct bt_mesh_subnet *sub = NULL;
sub = bt_mesh_subnet_get(ctx->net_idx);
if (!sub) {
BT_ERR("Send, NetKey 0x%04x not found", ctx->net_idx);
return -EADDRNOTAVAIL;
}
struct bt_mesh_net_tx tx = {
.sub = sub,
.ctx = ctx,
.src = bt_mesh_model_elem(model)->addr,
.xmit = bt_mesh_net_transmit_get(),
};
return model_send(model, &tx, implicit_bind, msg, cb, cb_data);
}
int bt_mesh_model_send(struct bt_mesh_model *model,
struct bt_mesh_msg_ctx *ctx,
struct net_buf_simple *msg,
const struct bt_mesh_send_cb *cb, void *cb_data)
{
struct bt_mesh_subnet *sub = NULL;
sub = bt_mesh_subnet_get(ctx->net_idx);
if (!sub) {
BT_ERR("Send, NetKey 0x%04x not found", ctx->net_idx);
return -EADDRNOTAVAIL;
}
struct bt_mesh_net_tx tx = {
.sub = sub,
.ctx = ctx,
.src = bt_mesh_model_elem(model)->addr,
.xmit = bt_mesh_net_transmit_get(),
};
return model_send(model, &tx, false, msg, cb, cb_data);
}
int bt_mesh_model_publish(struct bt_mesh_model *model)
{
struct bt_mesh_model_pub *pub = model->pub;
struct bt_mesh_app_key *key = NULL;
struct net_buf_simple *sdu = NULL;
struct bt_mesh_msg_ctx ctx = {0};
struct bt_mesh_net_tx tx = {
.ctx = &ctx,
.src = bt_mesh_model_elem(model)->addr,
.xmit = bt_mesh_net_transmit_get(),
};
int err = 0;
if (!pub || !pub->msg) {
BT_ERR("Model has no publication support");
return -ENOTSUP;
}
if (pub->addr == BLE_MESH_ADDR_UNASSIGNED) {
BT_WARN("Unassigned publish address");
return -EADDRNOTAVAIL;
}
if (pub->msg->len + BLE_MESH_MIC_SHORT > MIN(BLE_MESH_TX_SDU_MAX, BLE_MESH_SDU_MAX_LEN)) {
BT_ERR("Message does not fit maximum SDU size");
return -EMSGSIZE;
}
if (pub->count) {
BT_WARN("Clearing publish retransmit timer");
k_delayed_work_cancel(&pub->timer);
}
key = bt_mesh_app_key_get(pub->key);
if (!key) {
BT_ERR("Publish, AppKey 0x%03x not found", pub->key);
return -EADDRNOTAVAIL;
}
tx.sub = bt_mesh_subnet_get(key->net_idx);
if (!tx.sub) {
BT_ERR("Publish, NetKey 0x%04x not found", ctx.net_idx);
return -EADDRNOTAVAIL;
}
ctx.addr = pub->addr;
ctx.net_idx = key->net_idx;
ctx.app_idx = key->app_idx;
ctx.send_ttl = pub->ttl;
ctx.send_cred = pub->cred ? BLE_MESH_FRIENDSHIP_CRED : BLE_MESH_FLOODING_CRED;
ctx.send_szmic = pub->send_szmic;
#if 0
ctx.send_tag |= BLE_MESH_TAG_IMMUTABLE_CRED;
#endif
if (pub->send_rel) {
/* Tag with send-segmented */
ctx.send_tag |= BLE_MESH_TAG_SEND_SEGMENTED;
}
#if CONFIG_BLE_MESH_DF_SRV
bt_mesh_model_pub_use_directed(&tx, pub->directed_pub_policy);
#endif
pub->count = BLE_MESH_PUB_TRANSMIT_COUNT(pub->retransmit);
BT_INFO("Publish Retransmit Count %u Interval %ums", pub->count,
BLE_MESH_PUB_TRANSMIT_INT(pub->retransmit));
sdu = bt_mesh_alloc_buf(pub->msg->len + BLE_MESH_MIC_LONG);
if (!sdu) {
BT_ERR("%s, Out of memory", __func__);
return -ENOMEM;
}
net_buf_simple_add_mem(sdu, pub->msg->data, pub->msg->len);
err = model_send(model, &tx, true, sdu, &pub_sent_cb, model);
if (err) {
publish_retransmit_end(err, pub);
}
bt_mesh_free_buf(sdu);
return err;
}
struct bt_mesh_model *bt_mesh_model_find_vnd(struct bt_mesh_elem *elem,
uint16_t company, uint16_t id)
{
int i;
for (i = 0; i < elem->vnd_model_count; i++) {
if (elem->vnd_models[i].vnd.company == company &&
elem->vnd_models[i].vnd.id == id) {
return &elem->vnd_models[i];
}
}
return NULL;
}
struct bt_mesh_model *bt_mesh_model_find(struct bt_mesh_elem *elem, uint16_t id)
{
int i;
for (i = 0; i < elem->model_count; i++) {
if (elem->models[i].id == id) {
return &elem->models[i];
}
}
return NULL;
}
const struct bt_mesh_comp *bt_mesh_comp_get(void)
{
return comp_0;
}
const uint8_t *bt_mesh_dev_key_get(uint16_t dst)
{
const uint8_t *key = NULL;
if (IS_ENABLED(CONFIG_BLE_MESH_NODE) && bt_mesh_is_provisioned()) {
if (!IS_ENABLED(CONFIG_BLE_MESH_FAST_PROV)) {
key = bt_mesh.dev_key;
} else {
key = bt_mesh_fast_prov_dev_key_get(dst);
}
} else if (IS_ENABLED(CONFIG_BLE_MESH_PROVISIONER) && bt_mesh_is_provisioner_en()) {
key = bt_mesh_provisioner_dev_key_get(dst);
}
return key;
}
size_t bt_mesh_rx_netkey_size(void)
{
size_t size = 0U;
#if CONFIG_BLE_MESH_NODE && !CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioned()) {
size = ARRAY_SIZE(bt_mesh.sub);
}
#endif
#if !CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioner_en()) {
size = ARRAY_SIZE(bt_mesh.p_sub);
}
#endif
#if CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
size = ARRAY_SIZE(bt_mesh.sub);
if (bt_mesh_is_provisioner_en()) {
size += ARRAY_SIZE(bt_mesh.p_sub);
}
#endif
return size;
}
struct bt_mesh_subnet *bt_mesh_rx_netkey_get(size_t index)
{
struct bt_mesh_subnet *sub = NULL;
#if CONFIG_BLE_MESH_NODE && !CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioned()) {
sub = &bt_mesh.sub[index];
}
#endif
#if !CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioner_en()) {
sub = bt_mesh.p_sub[index];
}
#endif
#if CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
if (index < ARRAY_SIZE(bt_mesh.sub)) {
sub = &bt_mesh.sub[index];
} else {
sub = bt_mesh.p_sub[index - ARRAY_SIZE(bt_mesh.sub)];
}
#endif
return sub;
}
size_t bt_mesh_rx_devkey_size(void)
{
size_t size = 0U;
#if CONFIG_BLE_MESH_NODE && !CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioned()) {
size = 1;
#if CONFIG_BLE_MESH_RPR_SRV
if (bt_mesh_dev_key_ca_valid()) {
size += 1;
}
#endif /* CONFIG_BLE_MESH_RPR_SRV */
}
#endif /* CONFIG_BLE_MESH_NODE && !CONFIG_BLE_MESH_PROVISIONER */
#if !CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioner_en()) {
size = 1;
}
#endif
#if CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
size = 1;
#if CONFIG_BLE_MESH_RPR_SRV
if (bt_mesh_dev_key_ca_valid()) {
size += 1;
}
#endif /* CONFIG_BLE_MESH_RPR_SRV */
if (bt_mesh_is_provisioner_en()) {
size += 1;
}
#endif
return size;
}
const uint8_t *bt_mesh_rx_devkey_get(size_t index, uint16_t src)
{
const uint8_t *key = NULL;
#if CONFIG_BLE_MESH_NODE && !CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioned()) {
if (index == 0) {
key = bt_mesh.dev_key;
} else if (index == 1) {
key = bt_mesh.dev_key_ca;
}
}
#endif
#if !CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioner_en()) {
key = bt_mesh_provisioner_dev_key_get(src);
}
#endif
#if CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
if (index == 0) {
key = bt_mesh.dev_key;
} else
#if CONFIG_BLE_MESH_RPR_SRV
if (index == 1 && bt_mesh_dev_key_ca_valid()) {
/* If index == 1, there are two cases.
* 1. bt_mesh_dev_key_ca_valid() is true, it should be return bt_mesh.dev_key_ca.
* 2. bt_mesh_is_provisioner_en() is true, it should be return bt_mesh_provisioner_dev_key_get(src).
*
* If index == 2, that means bt_mesh_dev_key_ca_valid() and bt_mesh_is_provisioner_en() are true.
* So the previous round of function bt_mesh_rx_devkey_get(1, src) will return bt_mesh.dev_key_ca.
* Then this round of function bt_mesh_rx_devkey_get(2, src) will return bt_mesh_provisioner_dev_key_get(src).
*/
key = bt_mesh.dev_key_ca;
} else
#endif
{
key = bt_mesh_provisioner_dev_key_get(src);
}
#endif
return key;
}
size_t bt_mesh_rx_appkey_size(void)
{
size_t size = 0U;
#if CONFIG_BLE_MESH_NODE && !CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioned()) {
size = ARRAY_SIZE(bt_mesh.app_keys);
}
#endif
#if !CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioner_en()) {
size = ARRAY_SIZE(bt_mesh.p_app_keys);
}
#endif
#if CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
size = ARRAY_SIZE(bt_mesh.app_keys);
if (bt_mesh_is_provisioner_en()) {
size += ARRAY_SIZE(bt_mesh.p_app_keys);
}
#endif
return size;
}
struct bt_mesh_app_key *bt_mesh_rx_appkey_get(size_t index)
{
struct bt_mesh_app_key *key = NULL;
#if CONFIG_BLE_MESH_NODE && !CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioned()) {
key = &bt_mesh.app_keys[index];
}
#endif
#if !CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
if (bt_mesh_is_provisioner_en()) {
key = bt_mesh.p_app_keys[index];
}
#endif
#if CONFIG_BLE_MESH_NODE && CONFIG_BLE_MESH_PROVISIONER
if (index < ARRAY_SIZE(bt_mesh.app_keys)) {
key = &bt_mesh.app_keys[index];
} else {
key = bt_mesh.p_app_keys[index - ARRAY_SIZE(bt_mesh.app_keys)];
}
#endif
return key;
}
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