1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174

// Copyright 2019-2024 ChainSafe Systems
// SPDX-License-Identifier: Apache-2.0, MIT

use crate::libp2p::{Multiaddr, Protocol};
use crate::rpc::{self, net::AddrInfo, prelude::*};
use ahash::{HashMap, HashSet};
use cid::multibase;
use clap::Subcommand;
use itertools::Itertools;

use crate::cli::subcommands::cli_error_and_die;

#[derive(Debug, Subcommand)]
pub enum NetCommands {
    /// Lists `libp2p` swarm listener addresses
    Listen,
    /// Lists `libp2p` swarm network info
    Info,
    /// Lists `libp2p` swarm peers
    Peers {
        /// Print agent name
        #[arg(short, long)]
        agent: bool,
    },
    /// Connects to a peer by its peer ID and multi-addresses
    Connect {
        /// Multi-address (with `/p2p/` protocol)
        address: String,
    },
    /// Disconnects from a peer by it's peer ID
    Disconnect {
        /// Peer ID to disconnect from
        id: String,
    },
    /// Print information about reachability from the internet
    Reachability,
}

impl NetCommands {
    pub async fn run(self, client: rpc::Client) -> anyhow::Result<()> {
        match self {
            Self::Listen => {
                let info = NetAddrsListen::call(&client, ()).await?;
                let addresses: Vec<String> = info
                    .addrs
                    .iter()
                    .map(|addr| format!("{}/p2p/{}", addr, info.id))
                    .collect();
                println!("{}", addresses.join("\n"));
                Ok(())
            }
            Self::Info => {
                let info = NetInfo::call(&client, ()).await?;
                println!("forest libp2p swarm info:");
                println!("num peers: {}", info.num_peers);
                println!("num connections: {}", info.num_connections);
                println!("num pending: {}", info.num_pending);
                println!("num pending incoming: {}", info.num_pending_incoming);
                println!("num pending outgoing: {}", info.num_pending_outgoing);
                println!("num established: {}", info.num_established);
                Ok(())
            }
            Self::Peers { agent } => {
                let addrs = NetPeers::call(&client, ()).await?;
                let peer_to_agents: HashMap<String, String> = if agent {
                    let agents = futures::future::join_all(
                        addrs
                            .iter()
                            .map(|info| NetAgentVersion::call(&client, (info.id.clone(),))),
                    )
                    .await
                    .into_iter()
                    .map(|res| res.unwrap_or_else(|_| "<agent unknown>".to_owned()));

                    HashMap::from_iter(
                        addrs
                            .iter()
                            .map(|info| info.id.to_owned())
                            .zip(agents.into_iter()),
                    )
                } else {
                    HashMap::default()
                };

                let output: Vec<String> = addrs
                    .into_iter()
                    .filter_map(|info| {
                        let addresses: Vec<String> = info
                            .addrs
                            .into_iter()
                            .filter(|addr| match addr.iter().next().unwrap() {
                                Protocol::Ip4(ip_addr) => !ip_addr.is_loopback(),
                                Protocol::Ip6(ip_addr) => !ip_addr.is_loopback(),
                                _ => true,
                            })
                            .map(|addr| addr.to_string())
                            .unique()
                            .collect();
                        if addresses.is_empty() {
                            return None;
                        }

                        let result = format!("{}, [{}]", info.id, addresses.join(", "));

                        if agent {
                            Some(
                                [
                                    result,
                                    peer_to_agents
                                        .get(&info.id)
                                        .cloned()
                                        .unwrap_or_else(|| "<agent unknown>".to_owned()),
                                ]
                                .join(", "),
                            )
                        } else {
                            Some(result)
                        }
                    })
                    .collect();
                println!("{}", output.join("\n"));
                Ok(())
            }
            Self::Connect { address } => {
                let addr: Multiaddr = address
                    .parse()
                    .map_err(|e| {
                        cli_error_and_die(format!("Error parsing multiaddr. Error was: {e}"), 1);
                    })
                    .expect("Parse provided multiaddr from string");

                let mut id = "".to_owned();

                for protocol in addr.iter() {
                    if let Protocol::P2p(p2p) = protocol {
                        id = multibase::encode(multibase::Base::Base58Btc, p2p.to_bytes());
                        id = id.split_off(1);
                    }
                }

                if id.is_empty() {
                    cli_error_and_die("Needs a /p2p/ protocol present in multiaddr", 1)
                }

                let addrs = HashSet::from_iter([addr]);
                let addr_info = AddrInfo {
                    id: id.clone(),
                    addrs,
                };

                NetConnect::call(&client, (addr_info,)).await?;
                println!("connect {id}: success");
                Ok(())
            }
            Self::Disconnect { id } => {
                NetDisconnect::call(&client, (id.clone(),)).await?;
                println!("disconnect {id}: success");
                Ok(())
            }
            Self::Reachability => {
                let nat_status = NetAutoNatStatus::call(&client, ()).await?;
                println!("AutoNAT status:  {}", nat_status.reachability_as_str());
                if let Some(public_addrs) = nat_status.public_addrs {
                    if !public_addrs.is_empty() {
                        // Format is compatible with Go code:
                        // `fmt.Println("Public address:", []string{"foo", "bar"})`
                        println!("Public address: [{}]", public_addrs.join(" "));
                    }
                }
                Ok(())
            }
        }
    }
}