diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/mqtt/mqtt_rx.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/mqtt/mqtt_rx.c | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/mqtt/mqtt_rx.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/mqtt/mqtt_rx.c new file mode 100644 index 0000000..10b0ae4 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/mqtt/mqtt_rx.c @@ -0,0 +1,313 @@ +/** + * Copyright (c) 2015 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +/** @file mqtt_rx.c + * + * @brief Handles packet receive on transport TCP or TLS. + */ +#include "mqtt_internal.h" + +void event_notify(mqtt_client_t * const p_client, const mqtt_evt_t * p_evt, uint32_t flags); +void disconnect_event_notify(mqtt_client_t * p_client, uint32_t result); + +#if MQTT_CONFIG_LOG_ENABLED + +#define NRF_LOG_MODULE_NAME mqtt_rx + +#define NRF_LOG_LEVEL MQTT_CONFIG_LOG_LEVEL +#define NRF_LOG_INFO_COLOR MQTT_CONFIG_INFO_COLOR +#define NRF_LOG_DEBUG_COLOR MQTT_CONFIG_DEBUG_COLOR + +#include "nrf_log.h" +NRF_LOG_MODULE_REGISTER(); + +#define MQTT_TRC NRF_LOG_DEBUG /**< Used for getting trace of execution in the module. */ +#define MQTT_ERR NRF_LOG_ERROR /**< Used for logging errors in the module. */ +#define MQTT_DUMP NRF_LOG_HEXDUMP_DEBUG /**< Used for dumping octet information to get details of bond information etc. */ + +#define MQTT_ENTRY() MQTT_TRC(">> %s", __func__) +#define MQTT_EXIT() MQTT_TRC("<< %s", __func__) + +#else // MQTT_CONFIG_LOG_ENABLED + +#define MQTT_TRC(...) /**< Disables traces. */ +#define MQTT_DUMP(...) /**< Disables dumping of octet streams. */ +#define MQTT_ERR(...) /**< Disables error logs. */ + +#define MQTT_ENTRY(...) +#define MQTT_EXIT(...) + +#endif // MQTT_CONFIG_LOG_ENABLED + +static uint32_t mqtt_handle_packet(mqtt_client_t * p_client, + uint8_t * p_data, + uint32_t datalen, + uint32_t offset) +{ + mqtt_evt_t evt; + uint32_t err_code = NRF_SUCCESS; + bool notify_event = true; + + // Success by default, overwritten in special cases. + evt.result = NRF_SUCCESS; + + switch (p_data[0] & 0xF0) + { + case MQTT_PKT_TYPE_CONNACK: + { + MQTT_TRC("[%p]: Received MQTT_PKT_TYPE_CONNACK!", p_client); + + if (p_client->protocol_version == MQTT_VERSION_3_1_1) + { + evt.param.connack.session_present_flag = p_data[2] & MQTT_HEADER_CONNACK_MASK; + + MQTT_TRC("[%p]: session_present_flag: %d", + p_client, + evt.param.connack.session_present_flag); + } + + evt.param.connack.return_code = + (mqtt_conn_return_code_t)(p_data[3] & MQTT_HEADER_CONNACK_MASK); + + MQTT_TRC("[%p]: return_code: %d", + p_client, + evt.param.connack.return_code); + + if (evt.param.connack.return_code == MQTT_CONNECTION_ACCEPTED) + { + // Set state. + MQTT_SET_STATE(p_client, MQTT_STATE_CONNECTED); + } + + evt.result = evt.param.connack.return_code; + evt.id = MQTT_EVT_CONNACK; + + break; + } + case MQTT_PKT_TYPE_PUBLISH: + { + evt.param.publish.dup_flag = p_data[0] & MQTT_HEADER_DUP_MASK; + evt.param.publish.retain_flag = p_data[0] & MQTT_HEADER_RETAIN_MASK; + evt.param.publish.message.topic.qos = ((p_data[0] & MQTT_HEADER_QOS_MASK) >> 1); + + MQTT_TRC("[CID %p]: Received MQTT_PKT_TYPE_PUBLISH, QoS:%02x", + p_client, evt.param.publish.message.topic.qos); + + err_code = unpack_utf8_str(&evt.param.publish.message.topic.topic, + datalen, + p_data, + &offset); + + if (err_code == NRF_SUCCESS) + { + if (evt.param.publish.message.topic.qos) + { + err_code = unpack_uint16(&evt.param.publish.message_id, + datalen, + p_data, + &offset); + } + } + + if (err_code == NRF_SUCCESS) + { + err_code = unpack_bin_str(&evt.param.publish.message.payload, + datalen, + p_data, + &offset); + + // Zero length publish messages are permitted. + if (err_code != NRF_SUCCESS) + { + evt.param.publish.message.payload.p_bin_str = NULL; + evt.param.publish.message.payload.bin_strlen = 0; + } + } + + MQTT_TRC("PUB message len %08x, topic len %08x", + evt.param.publish.message.payload.bin_strlen, + evt.param.publish.message.topic.topic.utf_strlen); + + evt.id = MQTT_EVT_PUBLISH; + evt.result = err_code; + + UNUSED_VARIABLE(iot_timer_wall_clock_get(&p_client->last_activity)); + + break; + } + + case MQTT_PKT_TYPE_PUBACK: + { + MQTT_TRC("Received MQTT_PKT_TYPE_PUBACK!"); + + evt.id = MQTT_EVT_PUBACK; + err_code = unpack_uint16(&evt.param.puback.message_id, + datalen, + p_data, + &offset); + evt.result = err_code; + break; + } + + case MQTT_PKT_TYPE_PUBREC: + { + MQTT_TRC("Received MQTT_PKT_TYPE_PUBREC!"); + + evt.id = MQTT_EVT_PUBREC; + err_code = unpack_uint16(&evt.param.pubrec.message_id, + datalen, + p_data, + &offset); + evt.result = err_code; + break; + } + case MQTT_PKT_TYPE_PUBREL: + { + MQTT_TRC("Received MQTT_PKT_TYPE_PUBREL!"); + + evt.id = MQTT_EVT_PUBREL; + err_code = unpack_uint16(&evt.param.pubrel.message_id, + datalen, + p_data, + &offset); + evt.result = err_code; + break; + } + case MQTT_PKT_TYPE_PUBCOMP: + { + MQTT_TRC("Received MQTT_PKT_TYPE_PUBCOMP!"); + + evt.id = MQTT_EVT_PUBCOMP; + err_code = unpack_uint16(&evt.param.pubcomp.message_id, + datalen, + p_data, + &offset); + evt.result = err_code; + break; + } + case MQTT_PKT_TYPE_SUBACK: + { + MQTT_TRC("Received MQTT_PKT_TYPE_SUBACK!"); + + evt.id = MQTT_EVT_SUBACK; + err_code = unpack_uint16(&evt.param.pubrec.message_id, + datalen, + p_data, + &offset); + evt.result = err_code; + break; + } + case MQTT_PKT_TYPE_UNSUBACK: + { + MQTT_TRC("Received MQTT_PKT_TYPE_UNSUBACK!"); + + evt.id = MQTT_EVT_UNSUBACK; + err_code = unpack_uint16(&evt.param.pubrec.message_id, + datalen, + p_data, + &offset); + evt.result = err_code; + break; + } + case MQTT_PKT_TYPE_PINGRSP: + { + MQTT_TRC("Received MQTT_PKT_TYPE_PINGRSP!"); + + // No notification of Ping response to application. + notify_event = false; + break; + } + default: + { + // Nothing to notify. + notify_event = false; + break; + } + } + + if (notify_event == true) + { + event_notify(p_client, &evt, MQTT_EVT_FLAG_NONE); + } + + return err_code; +} + + +uint32_t mqtt_handle_rx_data(mqtt_client_t * p_client, uint8_t * p_data, uint32_t datalen) +{ + uint32_t err_code = NRF_SUCCESS; + uint32_t offset = 0; + + while (offset < datalen) + { + uint32_t start = offset; + uint32_t remaining_length = 0; + + offset = 1; // Skip first byte to offset MQTT packet length. + err_code = packet_length_decode(p_data + start, + datalen - start, + &remaining_length, + &offset); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + uint32_t packet_length = offset + remaining_length; + + if (start + packet_length > datalen) + { + return NRF_ERROR_INVALID_LENGTH; + } + + err_code = mqtt_handle_packet(p_client, + p_data + start, + packet_length, + offset); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + offset = start + packet_length; + } + + return err_code; +} |