15642374656

Committed 13 Jun 2025 07:22PM UTC coverage: 84.642% (-1.4%) from 86.035%

Build # 15642374656

Build Type

Pull #768

github

Committed by

web-flow

Commit Message

Merge 605fdfd6b into be0597869

Pull Request Pull Request #768: Add PartialEq/Eq to errors for easier comparison

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80.43

/payjoin-cli/src/app/v2/mod.rs

use std::sync::{Arc, Mutex};

use anyhow::{anyhow, Context, Result};
use payjoin::bitcoin::consensus::encode::serialize_hex;
use payjoin::bitcoin::psbt::Psbt;
use payjoin::bitcoin::{Amount, FeeRate};
use payjoin::receive::v2::{
    NewReceiver, PayjoinProposal, ProvisionalProposal, Receiver, UncheckedProposal, WantsInputs,
    WithContext,
};
use payjoin::receive::{Error, ReplyableError};
use payjoin::send::v2::{Sender, SenderBuilder, WithReplyKey};
use payjoin::{ImplementationError, Uri};
use tokio::sync::watch;

use super::config::Config;
use super::wallet::BitcoindWallet;
use super::App as AppTrait;
use crate::app::v2::ohttp::{unwrap_ohttp_keys_or_else_fetch, RelayManager};
use crate::app::{handle_interrupt, http_agent};
use crate::db::v2::{ReceiverPersister, SenderPersister};
use crate::db::Database;

mod ohttp;

#[derive(Clone)]
pub(crate) struct App {
    config: Config,
    db: Arc<Database>,
    wallet: BitcoindWallet,
    interrupt: watch::Receiver<()>,
    relay_manager: Arc<Mutex<RelayManager>>,
}

#[async_trait::async_trait]
impl AppTrait for App {
    fn new(config: Config) -> Result<Self> {
        let db = Arc::new(Database::create(&config.db_path)?);
        let relay_manager = Arc::new(Mutex::new(RelayManager::new()));
        let (interrupt_tx, interrupt_rx) = watch::channel(());
        tokio::spawn(handle_interrupt(interrupt_tx));
        let wallet = BitcoindWallet::new(&config.bitcoind)?;
        let app = Self { config, db, wallet, interrupt: interrupt_rx, relay_manager };
        app.wallet()
            .network()
            .context("Failed to connect to bitcoind. Check config RPC connection.")?;
        Ok(app)
    }

    fn wallet(&self) -> BitcoindWallet { self.wallet.clone() }

    async fn send_payjoin(&self, bip21: &str, fee_rate: FeeRate) -> Result<()> {
        use payjoin::UriExt;
        let uri =
            Uri::try_from(bip21).map_err(|e| anyhow!("Failed to create URI from BIP21: {}", e))?;
        let uri = uri.assume_checked();
        let uri = uri.check_pj_supported().map_err(|_| anyhow!("URI does not support Payjoin"))?;
        let url = uri.extras.endpoint();
        // match bip21 to send_session public_key
        let req_ctx = match self.db.get_send_session(url)? {
            Some(send_session) => send_session,
            None => {
                let psbt = self.create_original_psbt(&uri, fee_rate)?;
                let mut persister = SenderPersister::new(self.db.clone());
                let new_sender = SenderBuilder::new(psbt, uri.clone())
                    .build_recommended(fee_rate)
                    .with_context(|| "Failed to build payjoin request")?;
                let storage_token = new_sender
                    .persist(&mut persister)
                    .map_err(|e| anyhow!("Failed to persist sender: {}", e))?;
                Sender::load(storage_token, &persister)
                    .map_err(|e| anyhow!("Failed to load sender: {}", e))?
            }
        };
        self.spawn_payjoin_sender(req_ctx).await
    }

    async fn receive_payjoin(&self, amount: Amount) -> Result<()> {
        let address = self.wallet().get_new_address()?;
        let ohttp_keys =
            unwrap_ohttp_keys_or_else_fetch(&self.config, None, self.relay_manager.clone())
                .await?
                .ohttp_keys;
        let mut persister = ReceiverPersister::new(self.db.clone());
        let new_receiver = NewReceiver::new(
            address,
            self.config.v2()?.pj_directory.clone(),
            ohttp_keys.clone(),
            None,
        )?;
        let storage_token = new_receiver
            .persist(&mut persister)
            .map_err(|e| anyhow!("Failed to persist receiver: {}", e))?;
        let session = Receiver::load(storage_token, &persister)
            .map_err(|e| anyhow!("Failed to load receiver: {}", e))?;
        self.spawn_payjoin_receiver(session, Some(amount)).await
    }

    #[allow(clippy::incompatible_msrv)]
    async fn resume_payjoins(&self) -> Result<()> {
        let recv_sessions = self.db.get_recv_sessions()?;
        let send_sessions = self.db.get_send_sessions()?;

        if recv_sessions.is_empty() && send_sessions.is_empty() {
            println!("No sessions to resume.");
            return Ok(());
        }

        let mut tasks = Vec::new();

        for session in recv_sessions {
            let self_clone = self.clone();
            tasks.push(tokio::spawn(async move {
                self_clone.spawn_payjoin_receiver(session, None).await
            }));
        }

        for session in send_sessions {
            let self_clone = self.clone();
            tasks.push(tokio::spawn(async move { self_clone.spawn_payjoin_sender(session).await }));
        }

        let mut interrupt = self.interrupt.clone();
        tokio::select! {
            _ = async {
                for task in tasks {
                    let _ = task.await;
                }
            } => {
                println!("All resumed sessions completed.");
            }
            _ = interrupt.changed() => {
                println!("Resumed sessions were interrupted.");
            }
        }
        Ok(())
    }
}

impl App {
    #[allow(clippy::incompatible_msrv)]
    async fn spawn_payjoin_sender(&self, mut req_ctx: Sender<WithReplyKey>) -> Result<()> {
        let mut interrupt = self.interrupt.clone();
        tokio::select! {
            res = self.long_poll_post(&mut req_ctx) => {
                self.process_pj_response(res?)?;
                self.db.clear_send_session(req_ctx.endpoint())?;
            }
            _ = interrupt.changed() => {
                println!("Interrupted. Call `send` with the same arguments to resume this session or `resume` to resume all sessions.");
            }
        }
        Ok(())
    }

    #[allow(clippy::incompatible_msrv)]
    async fn spawn_payjoin_receiver(
        &self,
        mut session: Receiver<WithContext>,
        amount: Option<Amount>,
    ) -> Result<()> {
        println!("Receive session established");
        let mut pj_uri = session.pj_uri();
        pj_uri.amount = amount;
        let ohttp_relay = self
            .unwrap_relay_or_else_fetch(Some(session.pj_uri().extras.endpoint().clone()))
            .await?;

        println!("Request Payjoin by sharing this Payjoin Uri:");
        println!("{pj_uri}");

        let mut interrupt = self.interrupt.clone();
        let receiver = tokio::select! {
            res = self.long_poll_fallback(&mut session) => res,
            _ = interrupt.changed() => {
                println!("Interrupted. Call the `resume` command to resume all sessions.");
                return Ok(());
            }
        }?;

        println!("Fallback transaction received. Consider broadcasting this to get paid if the Payjoin fails:");
        println!("{}", serialize_hex(&receiver.extract_tx_to_schedule_broadcast()));
        let mut payjoin_proposal = match self.process_v2_proposal(receiver.clone()) {
            Ok(proposal) => proposal,
            Err(Error::ReplyToSender(e)) => {
                return Err(handle_recoverable_error(e, receiver, &ohttp_relay).await);
            }
            Err(e) => return Err(e.into()),
        };
        let (req, ohttp_ctx) = payjoin_proposal
            .extract_req(ohttp_relay)
            .map_err(|e| anyhow!("v2 req extraction failed {}", e))?;
        println!("Got a request from the sender. Responding with a Payjoin proposal.");
        let res = post_request(req).await?;
        payjoin_proposal
            .process_res(&res.bytes().await?, ohttp_ctx)
            .map_err(|e| anyhow!("Failed to deserialize response {}", e))?;
        let payjoin_psbt = payjoin_proposal.psbt().clone();
        println!(
            "Response successful. Watch mempool for successful Payjoin. TXID: {}",
            payjoin_psbt.extract_tx_unchecked_fee_rate().clone().compute_txid()
        );
        self.db.clear_recv_session()?;
        Ok(())
    }

    async fn long_poll_post(&self, req_ctx: &mut Sender<WithReplyKey>) -> Result<Psbt> {
        let ohttp_relay = self.unwrap_relay_or_else_fetch(Some(req_ctx.endpoint().clone())).await?;

        match req_ctx.extract_v2(ohttp_relay.clone()) {
            Ok((req, ctx)) => {
                println!("Posting Original PSBT Payload request...");
                let response = post_request(req).await?;
                println!("Sent fallback transaction");
                let v2_ctx = Arc::new(ctx.process_response(&response.bytes().await?)?);
                loop {
                    let (req, ohttp_ctx) = v2_ctx.extract_req(&ohttp_relay)?;
                    let response = post_request(req).await?;
                    match v2_ctx.process_response(&response.bytes().await?, ohttp_ctx) {
                        Ok(Some(psbt)) => return Ok(psbt),
                        Ok(None) => {
                            println!("No response yet.");
                        }
                        Err(re) => {
                            println!("{re}");
                            log::debug!("{re:?}");
                            return Err(anyhow!("Response error").context(re));
                        }
                    }
                }
            }
            Err(_) => {
                let (req, v1_ctx) = req_ctx.extract_v1();
                println!("Posting Original PSBT Payload request...");
                let response = post_request(req).await?;
                println!("Sent fallback transaction");
                match v1_ctx.process_response(&response.bytes().await?) {
                    Ok(psbt) => Ok(psbt),
                    Err(re) => {
                        println!("{re}");
                        log::debug!("{re:?}");
                        Err(anyhow!("Response error").context(re))
                    }
                }
            }
        }
    }

    async fn long_poll_fallback(
        &self,
        session: &mut Receiver<WithContext>,
    ) -> Result<Receiver<UncheckedProposal>> {
        let ohttp_relay = self
            .unwrap_relay_or_else_fetch(Some(session.pj_uri().extras.endpoint().clone()))
            .await?;

        loop {
            let (req, context) = session.extract_req(&ohttp_relay)?;
            println!("Polling receive request...");
            let ohttp_response = post_request(req).await?;
            let proposal = session
                .process_res(ohttp_response.bytes().await?.to_vec().as_slice(), context)
                .map_err(|_| anyhow!("GET fallback failed"))?;
            log::debug!("got response");
            if let Some(proposal) = proposal {
                break Ok(proposal);
            }
        }
    }

    fn process_v2_proposal(
        &self,
        proposal: Receiver<UncheckedProposal>,
    ) -> Result<Receiver<PayjoinProposal>, Error> {
        let wallet = self.wallet();

        // in a payment processor where the sender could go offline, this is where you schedule to broadcast the original_tx
        let _to_broadcast_in_failure_case = proposal.extract_tx_to_schedule_broadcast();

        // Receive Check 1: Can Broadcast
        let proposal =
            proposal.check_broadcast_suitability(None, |tx| Ok(wallet.can_broadcast(tx)?))?;
        log::trace!("check1");

        // Receive Check 2: receiver can't sign for proposal inputs
        let proposal = proposal.check_inputs_not_owned(|input| Ok(wallet.is_mine(input)?))?;
        log::trace!("check2");

        // Receive Check 3: have we seen this input before? More of a check for non-interactive i.e. payment processor receivers.
        let payjoin = proposal
            .check_no_inputs_seen_before(|input| Ok(self.db.insert_input_seen_before(*input)?))?;
        log::trace!("check3");

        let payjoin = payjoin
            .identify_receiver_outputs(|output_script| Ok(wallet.is_mine(output_script)?))?
            .commit_outputs();

        let provisional_payjoin = try_contributing_inputs(payjoin.clone(), &wallet)
            .map_err(ReplyableError::Implementation)?;

        let payjoin_proposal = provisional_payjoin.finalize_proposal(
            |psbt| Ok(wallet.process_psbt(psbt)?),
            None,
            self.config.max_fee_rate,
        )?;
        let payjoin_proposal_psbt = payjoin_proposal.psbt();
        log::debug!("Receiver's Payjoin proposal PSBT Rsponse: {payjoin_proposal_psbt:#?}");
        Ok(payjoin_proposal)
    }

    async fn unwrap_relay_or_else_fetch(
        &self,
        directory: Option<payjoin::Url>,
    ) -> Result<payjoin::Url> {
        let selected_relay =
            self.relay_manager.lock().expect("Lock should not be poisoned").get_selected_relay();
        let ohttp_relay = match selected_relay {
            Some(relay) => relay,
            None =>
                unwrap_ohttp_keys_or_else_fetch(&self.config, directory, self.relay_manager.clone())
                    .await?
                    .relay_url,
        };
        Ok(ohttp_relay)
    }
}

/// Handle request error by sending an error response over the directory
async fn handle_recoverable_error(
    e: ReplyableError,
    mut receiver: Receiver<UncheckedProposal>,
    ohttp_relay: &payjoin::Url,
) -> anyhow::Error {
    let to_return = anyhow!("Replied with error: {}", e);
    let (err_req, err_ctx) = match receiver.extract_err_req(&e.into(), ohttp_relay) {
        Ok(req_ctx) => req_ctx,
        Err(e) => return anyhow!("Failed to extract error request: {}", e),
    };

    let err_response = match post_request(err_req).await {
        Ok(response) => response,
        Err(e) => return anyhow!("Failed to post error request: {}", e),
    };

    let err_bytes = match err_response.bytes().await {
        Ok(bytes) => bytes,
        Err(e) => return anyhow!("Failed to get error response bytes: {}", e),
    };

    if let Err(e) = receiver.process_err_res(&err_bytes, err_ctx) {
        return anyhow!("Failed to process error response: {}", e);
    }

    to_return
}

fn try_contributing_inputs(
    payjoin: Receiver<WantsInputs>,
    wallet: &BitcoindWallet,
) -> Result<Receiver<ProvisionalProposal>, ImplementationError> {
    let candidate_inputs = wallet.list_unspent()?;

    let selected_input =
        payjoin.try_preserving_privacy(candidate_inputs).map_err(ImplementationError::new)?;

    Ok(payjoin
        .contribute_inputs(vec![selected_input])
        .map_err(ImplementationError::new)?
        .commit_inputs())
}

async fn post_request(req: payjoin::Request) -> Result<reqwest::Response> {
    let http = http_agent()?;
    http.post(req.url)
        .header("Content-Type", req.content_type)
        .body(req.body)
        .send()
        .await
        .map_err(map_reqwest_err)
}

fn map_reqwest_err(e: reqwest::Error) -> anyhow::Error {
    match e.status() {
        Some(status_code) => anyhow!("HTTP request failed: {} {}", status_code, e),
        None => anyhow!("No HTTP response: {}", e),
    }
}

1	use std::sync::{Arc, Mutex};
2
3	use anyhow::{anyhow, Context, Result};
4	use payjoin::bitcoin::consensus::encode::serialize_hex;
5	use payjoin::bitcoin::psbt::Psbt;
6	use payjoin::bitcoin::{Amount, FeeRate};
7	use payjoin::receive::v2::{
8	NewReceiver, PayjoinProposal, ProvisionalProposal, Receiver, UncheckedProposal, WantsInputs,
9	WithContext,
10	};
11	use payjoin::receive::{Error, ReplyableError};
12	use payjoin::send::v2::{Sender, SenderBuilder, WithReplyKey};
13	use payjoin::{ImplementationError, Uri};
14	use tokio::sync::watch;
15
16	use super::config::Config;
17	use super::wallet::BitcoindWallet;
18	use super::App as AppTrait;
19	use crate::app::v2::ohttp::{unwrap_ohttp_keys_or_else_fetch, RelayManager};
20	use crate::app::{handle_interrupt, http_agent};
21	use crate::db::v2::{ReceiverPersister, SenderPersister};
22	use crate::db::Database;
23
24	mod ohttp;
25
26	#[derive(Clone)]
27	pub(crate) struct App {
28	config: Config,
29	db: Arc<Database>,
30	wallet: BitcoindWallet,
31	interrupt: watch::Receiver<()>,
32	relay_manager: Arc<Mutex<RelayManager>>,
33	}
34
35	#[async_trait::async_trait]
36	impl AppTrait for App {
37	fn new(config: Config) -> Result<Self> {	4✔
38	let db = Arc::new(Database::create(&config.db_path)?);	4✔
39	let relay_manager = Arc::new(Mutex::new(RelayManager::new()));	4✔
40	let (interrupt_tx, interrupt_rx) = watch::channel(());	4✔
41	tokio::spawn(handle_interrupt(interrupt_tx));	4✔
42	let wallet = BitcoindWallet::new(&config.bitcoind)?;	4✔
43	let app = Self { config, db, wallet, interrupt: interrupt_rx, relay_manager };	4✔
44	app.wallet()	4✔
45	.network()	4✔
46	.context("Failed to connect to bitcoind. Check config RPC connection.")?;	4✔
47	Ok(app)	4✔
48	}	4✔
49
50	fn wallet(&self) -> BitcoindWallet { self.wallet.clone() }	10✔
51
52	async fn send_payjoin(&self, bip21: &str, fee_rate: FeeRate) -> Result<()> {	2✔
53	use payjoin::UriExt;
54	let uri =	2✔
55	Uri::try_from(bip21).map_err(\|e\| anyhow!("Failed to create URI from BIP21: {}", e))?;	2✔
56	let uri = uri.assume_checked();	2✔
57	let uri = uri.check_pj_supported().map_err(\|_\| anyhow!("URI does not support Payjoin"))?;	2✔
58	let url = uri.extras.endpoint();	2✔
59	// match bip21 to send_session public_key
60	let req_ctx = match self.db.get_send_session(url)? {	2✔
61	Some(send_session) => send_session,	1✔
62	None => {
63	let psbt = self.create_original_psbt(&uri, fee_rate)?;	1✔
64	let mut persister = SenderPersister::new(self.db.clone());	1✔
65	let new_sender = SenderBuilder::new(psbt, uri.clone())	1✔
66	.build_recommended(fee_rate)	1✔
67	.with_context(\|\| "Failed to build payjoin request")?;	1✔
68	let storage_token = new_sender	1✔
69	.persist(&mut persister)	1✔
70	.map_err(\|e\| anyhow!("Failed to persist sender: {}", e))?;	1✔
71	Sender::load(storage_token, &persister)	1✔
72	.map_err(\|e\| anyhow!("Failed to load sender: {}", e))?	1✔
73	}
74	};
75	self.spawn_payjoin_sender(req_ctx).await	2✔
76	}	4✔
77
78	async fn receive_payjoin(&self, amount: Amount) -> Result<()> {	1✔
79	let address = self.wallet().get_new_address()?;	1✔
80	let ohttp_keys =	1✔
81	unwrap_ohttp_keys_or_else_fetch(&self.config, None, self.relay_manager.clone())	1✔
82	.await?	1✔
83	.ohttp_keys;
84	let mut persister = ReceiverPersister::new(self.db.clone());	1✔
85	let new_receiver = NewReceiver::new(	1✔
86	address,	1✔
87	self.config.v2()?.pj_directory.clone(),	1✔
88	ohttp_keys.clone(),	1✔
89	None,	1✔
90	)?;	×
91	let storage_token = new_receiver	1✔
92	.persist(&mut persister)	1✔
93	.map_err(\|e\| anyhow!("Failed to persist receiver: {}", e))?;	1✔
94	let session = Receiver::load(storage_token, &persister)	1✔
95	.map_err(\|e\| anyhow!("Failed to load receiver: {}", e))?;	1✔
96	self.spawn_payjoin_receiver(session, Some(amount)).await	1✔
97	}	2✔
98
99	#[allow(clippy::incompatible_msrv)]
100	async fn resume_payjoins(&self) -> Result<()> {	1✔
101	let recv_sessions = self.db.get_recv_sessions()?;	1✔
102	let send_sessions = self.db.get_send_sessions()?;	1✔
103
104	if recv_sessions.is_empty() && send_sessions.is_empty() {	1✔
105	println!("No sessions to resume.");	×
106	return Ok(());	×
107	}	1✔
108		1✔
109	let mut tasks = Vec::new();	1✔
110
111	for session in recv_sessions {	2✔
112	let self_clone = self.clone();	1✔
113	tasks.push(tokio::spawn(async move {	1✔
114	self_clone.spawn_payjoin_receiver(session, None).await	1✔
115	}));	1✔
116	}	1✔
117
118	for session in send_sessions {	1✔
119	let self_clone = self.clone();	×
120	tasks.push(tokio::spawn(async move { self_clone.spawn_payjoin_sender(session).await }));	×
121	}	×
122
123	let mut interrupt = self.interrupt.clone();	1✔
124	tokio::select! {	1✔
125	_ = async {	1✔
126	for task in tasks {	1✔
127	let _ = task.await;	1✔
128	}
129	} => {	×
130	println!("All resumed sessions completed.");	×
131	}	×
132	_ = interrupt.changed() => {	1✔
133	println!("Resumed sessions were interrupted.");	1✔
134	}	1✔
135	}
136	Ok(())	1✔
137	}	2✔
138	}
139
140	impl App {
141	#[allow(clippy::incompatible_msrv)]
142	async fn spawn_payjoin_sender(&self, mut req_ctx: Sender<WithReplyKey>) -> Result<()> {	2✔
143	let mut interrupt = self.interrupt.clone();	2✔
144	tokio::select! {	2✔
145	res = self.long_poll_post(&mut req_ctx) => {	2✔
146	self.process_pj_response(res?)?;	1✔
147	self.db.clear_send_session(req_ctx.endpoint())?;	1✔
148	}
149	_ = interrupt.changed() => {	2✔
150	println!("Interrupted. Call `send` with the same arguments to resume this session or `resume` to resume all sessions.");	1✔
151	}	1✔
152	}
153	Ok(())	2✔
154	}	2✔
155
156	#[allow(clippy::incompatible_msrv)]
157	async fn spawn_payjoin_receiver(	2✔
158	&self,	2✔
159	mut session: Receiver<WithContext>,	2✔
160	amount: Option<Amount>,	2✔
161	) -> Result<()> {	2✔
162	println!("Receive session established");	2✔
163	let mut pj_uri = session.pj_uri();	2✔
164	pj_uri.amount = amount;	2✔
165	let ohttp_relay = self	2✔
166	.unwrap_relay_or_else_fetch(Some(session.pj_uri().extras.endpoint().clone()))	2✔
167	.await?;	2✔
168
169	println!("Request Payjoin by sharing this Payjoin Uri:");	2✔
170	println!("{pj_uri}");	2✔
171		2✔
172	let mut interrupt = self.interrupt.clone();	2✔
173	let receiver = tokio::select! {	2✔
174	res = self.long_poll_fallback(&mut session) => res,	2✔
175	_ = interrupt.changed() => {	2✔
176	println!("Interrupted. Call the `resume` command to resume all sessions.");	1✔
177	return Ok(());	1✔
178	}
179	}?;	×
180
181	println!("Fallback transaction received. Consider broadcasting this to get paid if the Payjoin fails:");	1✔
182	println!("{}", serialize_hex(&receiver.extract_tx_to_schedule_broadcast()));	1✔
183	let mut payjoin_proposal = match self.process_v2_proposal(receiver.clone()) {	1✔
184	Ok(proposal) => proposal,	1✔
185	Err(Error::ReplyToSender(e)) => {	×
186	return Err(handle_recoverable_error(e, receiver, &ohttp_relay).await);	×
187	}
188	Err(e) => return Err(e.into()),	×
189	};
190	let (req, ohttp_ctx) = payjoin_proposal	1✔
191	.extract_req(ohttp_relay)	1✔
192	.map_err(\|e\| anyhow!("v2 req extraction failed {}", e))?;	1✔
193	println!("Got a request from the sender. Responding with a Payjoin proposal.");	1✔
194	let res = post_request(req).await?;	1✔
195	payjoin_proposal	1✔
196	.process_res(&res.bytes().await?, ohttp_ctx)	1✔
197	.map_err(\|e\| anyhow!("Failed to deserialize response {}", e))?;	1✔
198	let payjoin_psbt = payjoin_proposal.psbt().clone();	1✔
199	println!(	1✔
200	"Response successful. Watch mempool for successful Payjoin. TXID: {}",	1✔
201	payjoin_psbt.extract_tx_unchecked_fee_rate().clone().compute_txid()	1✔
202	);	1✔
203	self.db.clear_recv_session()?;	1✔
204	Ok(())	1✔
205	}	2✔
206
207	async fn long_poll_post(&self, req_ctx: &mut Sender<WithReplyKey>) -> Result<Psbt> {	2✔
208	let ohttp_relay = self.unwrap_relay_or_else_fetch(Some(req_ctx.endpoint().clone())).await?;	2✔
209
210	match req_ctx.extract_v2(ohttp_relay.clone()) {	2✔
211	Ok((req, ctx)) => {	2✔
212	println!("Posting Original PSBT Payload request...");	2✔
213	let response = post_request(req).await?;	2✔
214	println!("Sent fallback transaction");	2✔
215	let v2_ctx = Arc::new(ctx.process_response(&response.bytes().await?)?);	2✔
216	loop {
217	let (req, ohttp_ctx) = v2_ctx.extract_req(&ohttp_relay)?;	3✔
218	let response = post_request(req).await?;	3✔
219	match v2_ctx.process_response(&response.bytes().await?, ohttp_ctx) {	2✔
220	Ok(Some(psbt)) => return Ok(psbt),	1✔
221	Ok(None) => {	1✔
222	println!("No response yet.");	1✔
223	}	1✔
224	Err(re) => {	×
225	println!("{re}");	×
226	log::debug!("{re:?}");	×
227	return Err(anyhow!("Response error").context(re));	×
228	}
229	}
230	}
231	}
232	Err(_) => {
233	let (req, v1_ctx) = req_ctx.extract_v1();	×
234	println!("Posting Original PSBT Payload request...");	×
235	let response = post_request(req).await?;	×
236	println!("Sent fallback transaction");	×
237	match v1_ctx.process_response(&response.bytes().await?) {	×
238	Ok(psbt) => Ok(psbt),	×
239	Err(re) => {	×
240	println!("{re}");	×
241	log::debug!("{re:?}");	×
242	Err(anyhow!("Response error").context(re))	×
243	}
244	}
245	}
246	}
247	}	1✔
248
249	async fn long_poll_fallback(	2✔
250	&self,	2✔
251	session: &mut Receiver<WithContext>,	2✔
252	) -> Result<Receiver<UncheckedProposal>> {	2✔
253	let ohttp_relay = self	2✔
254	.unwrap_relay_or_else_fetch(Some(session.pj_uri().extras.endpoint().clone()))	2✔
255	.await?;	2✔
256
257	loop {
258	let (req, context) = session.extract_req(&ohttp_relay)?;	2✔
259	println!("Polling receive request...");	2✔
260	let ohttp_response = post_request(req).await?;	2✔
261	let proposal = session	1✔
262	.process_res(ohttp_response.bytes().await?.to_vec().as_slice(), context)	1✔
263	.map_err(\|_\| anyhow!("GET fallback failed"))?;	1✔
264	log::debug!("got response");	1✔
265	if let Some(proposal) = proposal {	1✔
266	break Ok(proposal);	1✔
267	}	×
268	}
269	}	1✔
270
271	fn process_v2_proposal(	1✔
272	&self,	1✔
273	proposal: Receiver<UncheckedProposal>,	1✔
274	) -> Result<Receiver<PayjoinProposal>, Error> {	1✔
275	let wallet = self.wallet();	1✔
276		1✔
277	// in a payment processor where the sender could go offline, this is where you schedule to broadcast the original_tx	1✔
278	let _to_broadcast_in_failure_case = proposal.extract_tx_to_schedule_broadcast();	1✔
279
280	// Receive Check 1: Can Broadcast
281	let proposal =	1✔
282	proposal.check_broadcast_suitability(None, \|tx\| Ok(wallet.can_broadcast(tx)?))?;	1✔
283	log::trace!("check1");	1✔
284
285	// Receive Check 2: receiver can't sign for proposal inputs
286	let proposal = proposal.check_inputs_not_owned(\|input\| Ok(wallet.is_mine(input)?))?;	1✔
287	log::trace!("check2");	1✔
288
289	// Receive Check 3: have we seen this input before? More of a check for non-interactive i.e. payment processor receivers.
290	let payjoin = proposal	1✔
291	.check_no_inputs_seen_before(\|input\| Ok(self.db.insert_input_seen_before(*input)?))?;	1✔
292	log::trace!("check3");	1✔
293
294	let payjoin = payjoin	1✔
295	.identify_receiver_outputs(\|output_script\| Ok(wallet.is_mine(output_script)?))?	2✔
296	.commit_outputs();	1✔
297
298	let provisional_payjoin = try_contributing_inputs(payjoin.clone(), &wallet)	1✔
299	.map_err(ReplyableError::Implementation)?;	1✔
300
301	let payjoin_proposal = provisional_payjoin.finalize_proposal(	1✔
302	\|psbt\| Ok(wallet.process_psbt(psbt)?),	1✔
303	None,	1✔
304	self.config.max_fee_rate,	1✔
305	)?;	1✔
306	let payjoin_proposal_psbt = payjoin_proposal.psbt();	1✔
307	log::debug!("Receiver's Payjoin proposal PSBT Rsponse: {payjoin_proposal_psbt:#?}");	1✔
308	Ok(payjoin_proposal)	1✔
309	}	1✔
310
311	async fn unwrap_relay_or_else_fetch(	6✔
312	&self,	6✔
313	directory: Option<payjoin::Url>,	6✔
314	) -> Result<payjoin::Url> {	6✔
315	let selected_relay =	6✔
316	self.relay_manager.lock().expect("Lock should not be poisoned").get_selected_relay();	6✔
317	let ohttp_relay = match selected_relay {	6✔
318	Some(relay) => relay,	1✔
319	None =>
320	unwrap_ohttp_keys_or_else_fetch(&self.config, directory, self.relay_manager.clone())	5✔
321	.await?	5✔
322	.relay_url,
323	};
324	Ok(ohttp_relay)	6✔
325	}	6✔
326	}
327
328	/// Handle request error by sending an error response over the directory
UNCOV 329	async fn handle_recoverable_error(	×
UNCOV 330	e: ReplyableError,	×
UNCOV 331	mut receiver: Receiver<UncheckedProposal>,	×
UNCOV 332	ohttp_relay: &payjoin::Url,	×
UNCOV 333	) -> anyhow::Error {	×
UNCOV 334	let to_return = anyhow!("Replied with error: {}", e);	×
UNCOV 335	let (err_req, err_ctx) = match receiver.extract_err_req(&e.into(), ohttp_relay) {	×
UNCOV 336	Ok(req_ctx) => req_ctx,	×
UNCOV 337	Err(e) => return anyhow!("Failed to extract error request: {}", e),	×
338	};
339
UNCOV 340	let err_response = match post_request(err_req).await {	×
UNCOV 341	Ok(response) => response,	×
UNCOV 342	Err(e) => return anyhow!("Failed to post error request: {}", e),	×
343	};
344
345	let err_bytes = match err_response.bytes().await {	×
346	Ok(bytes) => bytes,	×
347	Err(e) => return anyhow!("Failed to get error response bytes: {}", e),	×
348	};
349
350	if let Err(e) = receiver.process_err_res(&err_bytes, err_ctx) {	×
351	return anyhow!("Failed to process error response: {}", e);	×
UNCOV 352	}	×
UNCOV 353		×
354	to_return	×
355	}	×
356
357	fn try_contributing_inputs(	1✔
358	payjoin: Receiver<WantsInputs>,	1✔
359	wallet: &BitcoindWallet,	1✔
360	) -> Result<Receiver<ProvisionalProposal>, ImplementationError> {	1✔
361	let candidate_inputs = wallet.list_unspent()?;	1✔
362
363	let selected_input =	1✔
364	payjoin.try_preserving_privacy(candidate_inputs).map_err(ImplementationError::new)?;	1✔
365
366	Ok(payjoin	1✔
367	.contribute_inputs(vec![selected_input])	1✔
368	.map_err(ImplementationError::new)?	1✔
369	.commit_inputs())	1✔
370	}	1✔
371
372	async fn post_request(req: payjoin::Request) -> Result<reqwest::Response> {	8✔
373	let http = http_agent()?;	8✔
374	http.post(req.url)	8✔
375	.header("Content-Type", req.content_type)	8✔
376	.body(req.body)	8✔
377	.send()	8✔
378	.await	8✔
379	.map_err(map_reqwest_err)	6✔
380	}	6✔
381
UNCOV 382	fn map_reqwest_err(e: reqwest::Error) -> anyhow::Error {	×
383	match e.status() {	×
UNCOV 384	Some(status_code) => anyhow!("HTTP request failed: {} {}", status_code, e),	×
UNCOV 385	None => anyhow!("No HTTP response: {}", e),	×
386	}
UNCOV 387	}	×

payjoin / rust-payjoin / 15642374656

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