Grcov report - mod.rs

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// SPDX-License-Identifier: BSD-2-Clause

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/*

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 * Copyright © The libcoap-rs Contributors, all rights reserved.

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 * This file is part of the libcoap-rs project, see the README file for

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 * general information on this project and the NOTICE.md and LICENSE files

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 * for information regarding copyright ownership and terms of use.

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 * message/mod.rs - Types related to CoAP messages.

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*/

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//! Types related to message handling, parsing and creation.

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//!

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//! The base unit that is transmitted between a CoAP client and a CoAP server is called a CoAP

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//! message (in libcoap also referred to as a "pdu"). This module contains both the basic

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//! representation for messages in libcoap-rs ([CoapMessage]) as well as builders that simplify the

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//! process of creating requests and responses and setting the appropriate options ([CoapRequest]

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//! and [CoapResponse]).

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use std::{ffi::c_void, fmt::Write, mem::MaybeUninit, slice::Iter};

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use libcoap_sys::{

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    coap_add_data, coap_add_data_large_request, coap_add_optlist_pdu, coap_add_token, coap_delete_optlist,

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    coap_delete_pdu, coap_get_data, coap_insert_optlist, coap_new_optlist, coap_opt_length, coap_opt_t, coap_opt_value,

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    coap_option_iterator_init, coap_option_next, coap_option_num_t, coap_optlist_t, coap_pdu_get_code,

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    coap_pdu_get_mid, coap_pdu_get_token, coap_pdu_get_type, coap_pdu_init, coap_pdu_set_code, coap_pdu_set_type,

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    coap_pdu_t, coap_session_t,

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};

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use num_traits::FromPrimitive;

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pub use request::CoapRequest;

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pub use response::CoapResponse;

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use crate::{

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    context::ensure_coap_started,

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    error::{MessageConversionError, OptionValueError},

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    protocol::{

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        Block, CoapMatch, CoapMessageCode, CoapMessageType, CoapOptionNum, CoapOptionType, ContentFormat, ETag, Echo,

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        HopLimit, MaxAge, NoResponse, Observe, Oscore, ProxyScheme, ProxyUri, RequestTag, Size, UriHost, UriPath,

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        UriPort, UriQuery,

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},

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    session::CoapSessionCommon,

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    types::{

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        decode_var_len_u16, decode_var_len_u32, decode_var_len_u8, encode_var_len_u16, encode_var_len_u32,

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        encode_var_len_u8, CoapMessageId,

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},

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};

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pub mod request;

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pub mod response;

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/// Representation of a CoAP option including its value.

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///

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/// For an enum describing the possible option types (and their associated option numbers), see

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/// [CoapOptionType], for the data type representing option numbers, see [CoapOptionNum]

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#[derive(Debug, Hash, Eq, PartialEq, Clone)]

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pub enum CoapOption {

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    IfMatch(CoapMatch),

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    IfNoneMatch,

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    UriHost(UriHost),

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    UriPort(UriPort),

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    UriPath(UriPath),

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    UriQuery(UriQuery),

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    LocationPath(UriPath),

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    LocationQuery(UriQuery),

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    ProxyUri(ProxyUri),

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    ProxyScheme(ProxyScheme),

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    ContentFormat(ContentFormat),

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    Accept(ContentFormat),

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    Size1(Size),

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    Size2(Size),

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    Block1(Block),

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    Block2(Block),

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    HopLimit(HopLimit),

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    NoResponse(NoResponse),

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    ETag(ETag),

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    MaxAge(MaxAge),

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    Observe(Observe),

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    Oscore(Oscore),

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    Echo(Echo),

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    RTag(RequestTag),

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    QBlock1(Block),

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    QBlock2(Block),

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    Other(CoapOptionNum, Box<[u8]>),

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impl CoapOption {

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    /// Create a CoAP option from its raw representation in the C library.

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///

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    /// # Safety

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    /// `opt` must be a valid pointer to a well-formed coap_opt_t value as returned by

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    /// [coap_option_next()].

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    pub(crate) unsafe fn from_raw_opt(

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        number: coap_option_num_t,

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        opt: *const coap_opt_t,

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    ) -> Result<CoapOption, OptionValueError> {

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        let value = Vec::from(std::slice::from_raw_parts(

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            coap_opt_value(opt),

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            coap_opt_length(opt) as usize,

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));

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        Self::from_type_value(number, value)

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    /// Returns the option number associated with this option.

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    pub fn number(&self) -> CoapOptionNum {

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        match self {

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            CoapOption::IfMatch(_) => CoapOptionType::IfMatch as u16,

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            CoapOption::IfNoneMatch => CoapOptionType::IfNoneMatch as u16,

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            CoapOption::UriHost(_) => CoapOptionType::UriHost as u16,

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            CoapOption::UriPort(_) => CoapOptionType::UriPort as u16,

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            CoapOption::UriPath(_) => CoapOptionType::UriPath as u16,

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            CoapOption::UriQuery(_) => CoapOptionType::UriQuery as u16,

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            CoapOption::LocationPath(_) => CoapOptionType::LocationPath as u16,

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            CoapOption::LocationQuery(_) => CoapOptionType::LocationQuery as u16,

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            CoapOption::ProxyUri(_) => CoapOptionType::ProxyUri as u16,

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            CoapOption::ProxyScheme(_) => CoapOptionType::ProxyScheme as u16,

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            CoapOption::ContentFormat(_) => CoapOptionType::ContentFormat as u16,

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            CoapOption::Accept(_) => CoapOptionType::Accept as u16,

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            CoapOption::Size1(_) => CoapOptionType::Size1 as u16,

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            CoapOption::Size2(_) => CoapOptionType::Size2 as u16,

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            CoapOption::Block1(_) => CoapOptionType::Block1 as u16,

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            CoapOption::Block2(_) => CoapOptionType::Block2 as u16,

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            CoapOption::HopLimit(_) => CoapOptionType::HopLimit as u16,

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            CoapOption::NoResponse(_) => CoapOptionType::NoResponse as u16,

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            CoapOption::ETag(_) => CoapOptionType::ETag as u16,

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            CoapOption::MaxAge(_) => CoapOptionType::MaxAge as u16,

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            CoapOption::Observe(_) => CoapOptionType::Observe as u16,

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            CoapOption::Oscore(_) => CoapOptionType::Oscore as u16,

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            CoapOption::Echo(_) => CoapOptionType::Echo as u16,

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            CoapOption::RTag(_) => CoapOptionType::RTag as u16,

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            CoapOption::QBlock1(_) => CoapOptionType::QBlock1 as u16,

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            CoapOption::QBlock2(_) => CoapOptionType::QBlock2 as u16,

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            CoapOption::Other(num, _) => *num,

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    /// Converts the option into a `Box<[u8]>` containing the value bytes.

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    pub fn into_value_bytes(self) -> Result<Box<[u8]>, OptionValueError> {

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        let num = self.number();

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        let bytes = match self {

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            CoapOption::IfMatch(val) => match val {

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                CoapMatch::ETag(tag) => tag,

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                CoapMatch::Empty => Box::new([]),

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},

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            CoapOption::IfNoneMatch => Box::new([]),

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            CoapOption::UriHost(value) => value.into_boxed_str().into_boxed_bytes(),

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            CoapOption::UriPort(value) => encode_var_len_u16(value),

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            CoapOption::UriPath(value) => value.into_boxed_str().into_boxed_bytes(),

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            CoapOption::UriQuery(value) => value.into_boxed_str().into_boxed_bytes(),

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            CoapOption::LocationPath(value) => value.into_boxed_str().into_boxed_bytes(),

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            CoapOption::LocationQuery(value) => value.into_boxed_str().into_boxed_bytes(),

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            CoapOption::ProxyUri(value) => value.into_boxed_str().into_boxed_bytes(),

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            CoapOption::ProxyScheme(value) => value.into_boxed_str().into_boxed_bytes(),

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            CoapOption::ContentFormat(value) => encode_var_len_u16(value),

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            CoapOption::Accept(value) => encode_var_len_u16(value),

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            CoapOption::Size1(value) => encode_var_len_u32(value),

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            CoapOption::Size2(value) => encode_var_len_u32(value),

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            CoapOption::Block1(value) => encode_var_len_u32(value),

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            CoapOption::Block2(value) => encode_var_len_u32(value),

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            CoapOption::HopLimit(value) => encode_var_len_u16(value),

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            CoapOption::NoResponse(value) => encode_var_len_u8(value),

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            CoapOption::ETag(value) => value,

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            CoapOption::MaxAge(value) => encode_var_len_u32(value),

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            CoapOption::Observe(value) => encode_var_len_u32(value),

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            CoapOption::Oscore(value) => value,

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            CoapOption::Echo(value) => value,

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            CoapOption::RTag(value) => value,

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            CoapOption::QBlock1(value) => encode_var_len_u32(value),

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            CoapOption::QBlock2(value) => encode_var_len_u32(value),

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            CoapOption::Other(_num, data) => data,

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};

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        if let Some(opt_type) = <CoapOptionType as FromPrimitive>::from_u16(num) {

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            if bytes.len() < opt_type.min_len() {

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                return Err(OptionValueError::TooShort);

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            } else if bytes.len() > opt_type.max_len() {

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                return Err(OptionValueError::TooLong);

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        Ok(bytes)

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    /// Converts this option into a raw coap_optlist_t instance, suitable for addition to a raw

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    /// coap_pdu_t.

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    pub(crate) fn into_optlist_entry(self) -> Result<*mut coap_optlist_t, OptionValueError> {

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        let num = self.number();

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        let value = self.into_value_bytes()?;

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        Ok(unsafe { coap_new_optlist(num, value.len(), value.as_ptr()) })

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    /// Attempts to convert a raw coap_optlist_t instance into a [CoapOption].

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///

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    /// # Errors

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///

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    /// Returns an [OptionValueError] if the provided `optlist_entry` has an invalid value.

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///

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    /// # Safety

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///

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    /// optlist_entry must be a valid coap_optlist_t instance whose `number`, `data` and `length`

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    /// fields describe a CoAP option number and the option value respectively.

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    pub(crate) unsafe fn from_optlist_entry(optlist_entry: &coap_optlist_t) -> Result<Self, OptionValueError> {

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        let value = Vec::from(std::slice::from_raw_parts(optlist_entry.data, optlist_entry.length));

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        Self::from_type_value(optlist_entry.number, value)

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    /// Convert coap_option_num_t and option value into a parsed [CoapOption] if possible.

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    fn from_type_value(type_: coap_option_num_t, value: Vec<u8>) -> Result<Self, OptionValueError> {

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        match CoapOptionType::try_from(type_) {

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            Ok(opt_type) => {

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                if opt_type.min_len() > value.len() {

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                    return Err(OptionValueError::TooShort);

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                } else if opt_type.max_len() < value.len() {

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                    return Err(OptionValueError::TooLong);

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                match opt_type {

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                    CoapOptionType::IfMatch => Ok(CoapOption::IfMatch(if value.is_empty() {

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                        CoapMatch::Empty

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                    } else {

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                        CoapMatch::ETag(value.into_boxed_slice())

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                    })),

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                    CoapOptionType::UriHost => Ok(CoapOption::UriHost(String::from_utf8(value)?)),

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                    CoapOptionType::ETag => Ok(CoapOption::ETag(value.into_boxed_slice())),

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                    CoapOptionType::IfNoneMatch => Ok(CoapOption::IfNoneMatch),

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                    CoapOptionType::UriPort => Ok(CoapOption::UriPort(decode_var_len_u16(value.as_slice()))),

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                    CoapOptionType::LocationPath => Ok(CoapOption::LocationPath(String::from_utf8(value)?)),

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                    CoapOptionType::UriPath => Ok(CoapOption::UriPath(String::from_utf8(value)?)),

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                    CoapOptionType::ContentFormat => {

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                        Ok(CoapOption::ContentFormat(decode_var_len_u16(value.as_slice())))

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},

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                    CoapOptionType::MaxAge => Ok(CoapOption::MaxAge(decode_var_len_u32(value.as_slice()))),

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                    CoapOptionType::UriQuery => Ok(CoapOption::UriQuery(String::from_utf8(value)?)),

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                    CoapOptionType::Accept => Ok(CoapOption::Accept(decode_var_len_u16(value.as_slice()))),

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                    CoapOptionType::LocationQuery => Ok(CoapOption::LocationQuery(String::from_utf8(value)?)),

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                    CoapOptionType::ProxyUri => Ok(CoapOption::ProxyUri(String::from_utf8(value)?)),

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                    CoapOptionType::ProxyScheme => Ok(CoapOption::ProxyScheme(String::from_utf8(value)?)),

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                    CoapOptionType::Size1 => Ok(CoapOption::Size1(decode_var_len_u32(value.as_slice()))),

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                    CoapOptionType::Size2 => Ok(CoapOption::Size2(decode_var_len_u32(value.as_slice()))),

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                    CoapOptionType::Block1 => Ok(CoapOption::Block1(decode_var_len_u32(value.as_slice()))),

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                    CoapOptionType::Block2 => Ok(CoapOption::Block2(decode_var_len_u32(value.as_slice()))),

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                    CoapOptionType::HopLimit => Ok(CoapOption::HopLimit(decode_var_len_u16(value.as_slice()))),

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                    CoapOptionType::NoResponse => {

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                        Ok(CoapOption::NoResponse(decode_var_len_u8(value.as_slice()) as NoResponse))

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},

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                    CoapOptionType::Observe => Ok(CoapOption::Observe(decode_var_len_u32(value.as_slice()))),

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                    CoapOptionType::Oscore => Ok(CoapOption::Oscore(value.into_boxed_slice())),

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                    CoapOptionType::Echo => Ok(CoapOption::Echo(value.into_boxed_slice())),

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                    CoapOptionType::RTag => Ok(CoapOption::RTag(value.into_boxed_slice())),

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                    CoapOptionType::QBlock1 => Ok(CoapOption::QBlock1(decode_var_len_u32(value.as_slice()))),

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                    CoapOptionType::QBlock2 => Ok(CoapOption::QBlock2(decode_var_len_u32(value.as_slice()))),

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},

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            _ => Ok(CoapOption::Other(type_, value.into_boxed_slice())),

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/// Constructs a path string from a [Vec] of strings containing the separate path components.

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pub(crate) fn construct_path_string(path_components: Vec<String>) -> String {

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    path_components.into_iter().fold(String::new(), |mut a: String, v| {

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        // Writing to a String _shouldn't_ cause an error.

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        // If it does, something is terribly wrong and we should panic.

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        write!(&mut a, "/{}", v).expect("unable to create path string");

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})

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/// Constructs a query string from a [Vec] of strings containing the separate query components.

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pub(crate) fn construct_query_string(query_components: Vec<String>) -> String {

266

    let mut iter = query_components.iter();

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    let mut out_str = String::from("?");

268

    if let Some(q) = iter.next() {

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        out_str = out_str + q

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    for q in iter {

272

        out_str += format!("&{}", q).as_ref();

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    out_str

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276

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/// Interface for CoAP messages common between requests, responses and other messages.

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pub trait CoapMessageCommon {

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    /// Add the supplied CoAP option to this message.

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    fn add_option(&mut self, option: CoapOption) {

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        self.as_message_mut().options.push(option);

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    /// Clear the list of options that were added to this message using [add_option()](CoapMessageCommon::add_option()).

285

25

    fn clear_options(&mut self) {

286

25

        self.as_message_mut().options.clear();

287

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    /// Returns an iterator over the options contained in this message.

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699

    fn options_iter(&self) -> Iter<CoapOption> {

291

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        self.as_message().options.iter()

292

699

293

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    /// Returns the CoAP message type (confirmable, non-confirmable, acknowledgement, rst) of this message.

295

    fn type_(&self) -> CoapMessageType {

296

        self.as_message().type_

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    /// Sets the CoAP message type (confirmable, non-confirmable, acknowledgement, rst) of this message.

300

    fn set_type_(&mut self, type_: CoapMessageType) {

301

        self.as_message_mut().type_ = type_;

302

303

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    /// Returns the message code of this message.

305

    /// To determine whether the message is a request or response, use [CoapMessageCode::try_from()]

306

    /// and match for the enum variants.

307

50

    fn code(&self) -> CoapMessageCode {

308

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        self.as_message().code

309

50

310

311

    /// Sets the message code of this message.

312

25

    fn set_code<C: Into<CoapMessageCode>>(&mut self, code: C) {

313

25

        self.as_message_mut().code = code.into();

314

25

315

316

    /// Returns the CoAP message ID for this message.

317

25

    fn mid(&self) -> Option<CoapMessageId> {

318

25

        self.as_message().mid

319

25

320

321

    /// Sets the CoAP message ID for this message.

322

25

    fn set_mid(&mut self, mid: Option<CoapMessageId>) {

323

25

        self.as_message_mut().mid = mid;

324

25

325

326

    /// Returns a reference to the data/body of this message.

327

25

    fn data(&self) -> Option<&[u8]> {

328

25

        self.as_message().data.as_ref().map(|v| v.as_ref())

329

25

330

331

    /// Sets the data/body of this message.

332

25

    fn set_data<D: Into<Box<[u8]>>>(&mut self, data: Option<D>) {

333

25

        self.as_message_mut().data = data.map(Into::into);

334

25

335

336

    /// Returns the message token.

337

283

    fn token(&self) -> Option<&[u8]> {

338

283

        self.as_message().token.as_ref().map(|v| v.as_ref())

339

283

340

341

    /// Sets the message token.

342

///

343

    /// Note that [CoapSessionCommon::send_request()] will automatically set the token to a random

344

    /// value if you don't.

345

25

    fn set_token<D: Into<Box<[u8]>>>(&mut self, token: Option<D>) {

346

25

        self.as_message_mut().token = token.map(Into::into);

347

25

348

349

    /// Returns a reference to this message.

350

    fn as_message(&self) -> &CoapMessage;

351

    /// Returns a mutable reference to this message.

352

    fn as_message_mut(&mut self) -> &mut CoapMessage;

353

354

355

/// Representation of a CoAP message.

356

#[derive(Debug, Clone, PartialEq, Eq, Hash)]

357

pub struct CoapMessage {

358

    /// CoAP message type (CON, NON, ACK, RST).

359

    type_: CoapMessageType,

360

    /// CoAP message code (e.g. 2.00 Content or 4.04 Not Found)

361

    code: CoapMessageCode,

362

    /// ID of this message – unique to each message sent over this session.

363

    mid: Option<CoapMessageId>,

364

    /// List of CoAP options associated with this message.

365

    options: Vec<CoapOption>,

366

    /// CoAP message token – used for request-response-matching.

367

    token: Option<Box<[u8]>>,

368

    /// Message body of this message.

369

    data: Option<Box<[u8]>>,

370

371

372

impl CoapMessage {

373

    /// Creates a new CoAP message with the given type and code.

374

233

    pub fn new(type_: CoapMessageType, code: CoapMessageCode) -> CoapMessage {

375

233

        ensure_coap_started();

376

233

        CoapMessage {

377

233

            type_,

378

233

            code,

379

233

            mid: None,

380

233

            options: Vec::new(),

381

233

            token: None,

382

233

            data: None,

383

233

384

233

385

386

    /// Parses the given raw coap_pdu_t into a CoapMessage.

387

///

388

    /// # Safety

389

    /// raw_pdu must point to a valid instance of coap_pdu_t.

390

699

    pub unsafe fn from_raw_pdu(raw_pdu: *const coap_pdu_t) -> Result<CoapMessage, MessageConversionError> {

391

699

        ensure_coap_started();

392

699

        let mut option_iter = MaybeUninit::zeroed();

393

699

        coap_option_iterator_init(raw_pdu, option_iter.as_mut_ptr(), std::ptr::null());

394

699

        let mut option_iter = option_iter.assume_init();

395

699

        let mut options = Vec::new();

396

1165

        while let Some(read_option) = coap_option_next(&mut option_iter).as_ref() {

397

466

            options.push(CoapOption::from_raw_opt(option_iter.number, read_option).map_err(|e| {

398

                MessageConversionError::InvalidOptionValue(CoapOptionType::try_from(option_iter.number).ok(), e)

399

466

            })?);

400

401

699

        let mut len: usize = 0;

402

699

        let mut data = std::ptr::null();

403

699

        coap_get_data(raw_pdu, &mut len, &mut data);

404

699

        let data = match len {

405

466

            0 => None,

406

233

            len => Some(Vec::from(std::slice::from_raw_parts(data, len)).into_boxed_slice()),

407

};

408

699

        let raw_token = coap_pdu_get_token(raw_pdu);

409

699

        let token = Vec::from(std::slice::from_raw_parts(raw_token.s, raw_token.length));

410

699

        Ok(CoapMessage {

411

699

            type_: coap_pdu_get_type(raw_pdu).into(),

412

699

            code: coap_pdu_get_code(raw_pdu).try_into().unwrap(),

413

699

            mid: Some(coap_pdu_get_mid(raw_pdu)),

414

699

            options,

415

699

            token: Some(token.into_boxed_slice()),

416

699

            data,

417

699

})

418

699

419

420

    /// Converts this message into a raw PDU suitable for sending using the raw [coap_send()](libcoap_sys::coap_send())

421

    /// function.

422

///

423

    /// The caller is responsible for freeing the returned PDU, either by calling [coap_send()](libcoap_sys::coap_send()) or

424

    /// [coap_delete_pdu()].

425

50

    pub fn into_raw_pdu<'a, S: CoapSessionCommon<'a> + ?Sized>(

426

50

        mut self,

427

50

        session: &S,

428

50

    ) -> Result<*mut coap_pdu_t, MessageConversionError> {

429

50

        let message = self.as_message_mut();

430

431

        // SAFETY: all values are valid, cannot cause UB.

432

50

        let pdu = unsafe {

433

            coap_pdu_init(

434

50

                message.type_.to_raw_pdu_type(),

435

50

                message.code.to_raw_pdu_code(),

436

50

                message.mid.ok_or(MessageConversionError::MissingMessageId)?,

437

50

                session.max_pdu_size(),

438

50

439

50

};

440

50

        if pdu.is_null() {

441

            return Err(MessageConversionError::Unknown);

442

50

443

50

        // SAFETY: We just checked that pdu is a valid pointer.

444

50

        unsafe {

445

50

            let result = self.apply_to_raw_pdu(pdu, session);

446

50

            if result.is_err() {

447

                coap_delete_pdu(pdu);

448

50

449

50

            result

450

451

50

452

453

    /// Applies this message to the given raw PDU.

454

///

455

    /// Note that existing parameters of the PDU are not explicitly removed. However, because this

456

    /// function calls [coap_add_token()](libcoap_sys::coap_add_token()), any pre-added options and

457

    /// data will probably be destroyed.

458

///

459

    /// If you don't have a raw pdu instance, use [CoapMessage::into_raw_pdu()] instead of this

460

    /// function.

461

///

462

    /// # Panics

463

    /// Panics if the provided `raw_pdu` is a null pointer.

464

///

465

    /// # Safety

466

    /// raw_pdu must point to a valid mutable instance of coap_pdu_t.

467

50

    pub(crate) unsafe fn apply_to_raw_pdu<'a, S: CoapSessionCommon<'a> + ?Sized>(

468

50

        mut self,

469

50

        raw_pdu: *mut coap_pdu_t,

470

50

        session: &S,

471

50

    ) -> Result<*mut coap_pdu_t, MessageConversionError> {

472

50

        assert!(!raw_pdu.is_null(), "attempted to apply CoapMessage to null pointer");

473

50

        coap_pdu_set_type(raw_pdu, self.type_.to_raw_pdu_type());

474

50

        coap_pdu_set_code(raw_pdu, self.code.to_raw_pdu_code());

475

50

        let message = self.as_message_mut();

476

50

        let token: &[u8] = message.token.as_ref().ok_or(MessageConversionError::MissingToken)?;

477

50

        if coap_add_token(raw_pdu, token.len(), token.as_ptr()) == 0 {

478

            return Err(MessageConversionError::Unknown);

479

50

480

50

        let mut optlist = None;

481

50

        let option_iter = std::mem::take(&mut message.options).into_iter();

482

75

        for option in option_iter {

483

25

            let optnum = option.number();

484

25

            let entry = option

485

25

                .into_optlist_entry()

486

25

                .map_err(|e| MessageConversionError::InvalidOptionValue(CoapOptionType::try_from(optnum).ok(), e))?;

487

25

            if entry.is_null() {

488

                if let Some(optlist) = optlist {

489

                    coap_delete_optlist(optlist);

490

                    return Err(MessageConversionError::Unknown);

491

492

25

493

25

            match optlist {

494

25

                None => {

495

25

                    optlist = Some(entry);

496

25

},

497

                Some(mut optlist) => {

498

                    coap_insert_optlist(&mut optlist, entry);

499

},

500

501

502

50

        if let Some(mut optlist) = optlist {

503

25

            let optlist_add_success = coap_add_optlist_pdu(raw_pdu, &mut optlist);

504

25

            coap_delete_optlist(optlist);

505

25

            if optlist_add_success == 0 {

506

                return Err(MessageConversionError::Unknown);

507

25

508

25

509

50

        if let Some(data) = message.data.take() {

510

25

            match message.code {

511

                CoapMessageCode::Empty => return Err(MessageConversionError::DataInEmptyMessage),

512

                CoapMessageCode::Request(_) => {

513

                    let len = data.len();

514

                    let box_ptr = Box::into_raw(data);

515

                    coap_add_data_large_request(

516

                        session.raw_session_mut(),

517

                        raw_pdu,

518

                        len,

519

                        box_ptr as *mut u8,

520

                        Some(large_data_cleanup_handler),

521

                        box_ptr as *mut c_void,

522

);

523

},

524

                CoapMessageCode::Response(_) => {

525

                    // TODO blockwise transfer here as well.

526

                    // (for some reason libcoap needs the request PDU here?)

527

25

                    let data: &[u8] = data.as_ref();

528

25

                    if coap_add_data(raw_pdu, data.len(), data.as_ptr()) == 0 {

529

                        return Err(MessageConversionError::Unknown);

530

25

531

},

532

533

25

534

50

        Ok(raw_pdu)

535

50

536

537

538

impl CoapMessageCommon for CoapMessage {

539

699

    fn as_message(&self) -> &CoapMessage {

540

699

        self

541

699

542

543

1631

    fn as_message_mut(&mut self) -> &mut CoapMessage {

544

1631

        self

545

1631

546

547

548

impl From<CoapRequest> for CoapMessage {

549

    fn from(val: CoapRequest) -> Self {

550

        val.into_message()

551

552

553

554

impl From<CoapResponse> for CoapMessage {

555

233

    fn from(val: CoapResponse) -> Self {

556

233

        val.into_message()

557

233

558

559

560

/// Handler provided to libcoap to cleanup large message bodies.

561

unsafe extern "C" fn large_data_cleanup_handler(_session: *mut coap_session_t, app_ptr: *mut c_void) {

562

    std::mem::drop(Box::from_raw(app_ptr as *mut u8));

563