feat: Sign using NIP-07

Signed-off-by: Awiteb <a@4rs.nl>

src/cli/commands/config/mod.rs

@@ -18,6 +18,8 @@
 mod bunker;
 /// `config keyring` subcommand
 mod keyring;
+/// `config nip07` subcommand
+mod nip07;
 /// `config pow` subcommand
 mod pow;
 /// `config relays` subcommand
@@ -27,6 +29,7 @@ use clap::Subcommand;
 
 use self::bunker::BunkerArgs;
 use self::keyring::KeyringArgs;
+use self::nip07::Nip07Args;
 use self::pow::PowArgs;
 use self::relays::RelaysArgs;
 use super::CliOptions;
@@ -45,10 +48,13 @@ pub enum ConfigSubcommands {
     /// Managing the secret key keyring, including enabling, disabling, or
     /// resetting it.
     Keyring(KeyringArgs),
+    /// Controls the NIP-07 browser signer proxy, turning it on or off, and
+    /// configures the `ip:port` address.
+    Nip07(Nip07Args),
 }
 
 impl CommandRunner for ConfigSubcommands {
     async fn run(self, options: CliOptions) -> N34Result<()> {
-        crate::run_command!(self, options, & Pow Relays Bunker Keyring)
+        crate::run_command!(self, options, & Pow Relays Bunker Keyring Nip07)
     }
 }

src/cli/commands/config/nip07.rs

@@ -0,0 +1,58 @@
+// n34 - A CLI to interact with NIP-34 and other stuff related to codes in nostr
+// Copyright (C) 2025 Awiteb <a@4rs.nl>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://gnu.org/licenses/gpl-3.0.html>.
+
+use std::net::SocketAddr;
+
+use clap::{ArgGroup, Args};
+
+use crate::{
+    cli::{CliOptions, options_state::DEFAULT_NIP07_PROXY_ADDR, traits::CommandRunner},
+    error::N34Result,
+};
+
+#[derive(Args, Debug)]
+#[clap(
+    group(
+        ArgGroup::new("options")
+            .required(true)
+    )
+)]
+pub struct Nip07Args {
+    /// Enable NIP-07 as the default signer.
+    #[arg(long, group = "options")]
+    enable:  bool,
+    /// Disable NIP-07 as the default signer.
+    #[arg(long, group = "options", group = "disable_options")]
+    disable: bool,
+    /// Set the default `ip:port` for the browser signer proxy.
+    #[arg(long, group = "disable_options")]
+    addr:    Option<SocketAddr>,
+}
+
+impl CommandRunner for Nip07Args {
+    const NEED_SIGNER: bool = false;
+
+    async fn run(self, mut options: CliOptions) -> N34Result<()> {
+        if self.enable {
+            let addr = self.addr.unwrap_or(DEFAULT_NIP07_PROXY_ADDR);
+            options.config.nip07 = Some(addr)
+        } else {
+            options.config.nip07 = None
+        }
+
+        options.config.dump()
+    }
+}

src/cli/commands/mod.rs

@@ -31,7 +31,7 @@ use std::fmt;
 use std::sync::Arc;
 use std::time::Duration;
 
-use clap::{ArgGroup, Args, Parser};
+use clap::{Args, Parser};
 use nostr::key::{Keys, PublicKey, SecretKey};
 use nostr::nips::nip46::NostrConnectURI;
 use nostr::signer::{IntoNostrSigner, NostrSigner};
@@ -44,6 +44,7 @@ use self::reply::ReplyArgs;
 use self::repo::RepoSubcommands;
 use self::sets::SetsSubcommands;
 use super::CliConfig;
+use super::options_state::OptionsState;
 use super::types::RelayOrSet;
 use super::{parsers, traits::CommandRunner};
 use crate::cli::Cli;
@@ -59,21 +60,18 @@ pub const DEFAULT_FALLBACK_PATH: &str = "I_DO_NOT_KNOW_WHY_CLAP_DO_NOT_SUPPORT_L
 const BUNKER_TIMEOUT: Duration = Duration::from_secs(60 * 3);
 
 /// The command-line interface options
-#[derive(Args, Clone)]
-#[clap(
-    group(
-        ArgGroup::new("signer")
-            .args(&["secret_key", "bunker_url"])
-            .required(false)
-    )
-)]
+#[derive(Args)]
 pub struct CliOptions {
     /// Your Nostr secret key
-    #[arg(short, long)]
+    #[arg(short, long, group = "signer")]
     pub secret_key: Option<SecretKey>,
     /// NIP-46 bunker url used for signing events
-    #[arg(short, long, value_parser=parsers::parse_bunker_url)]
+    #[arg(short, long, group = "signer", value_parser = parsers::parse_bunker_url)]
     pub bunker_url: Option<NostrConnectURI>,
+    /// Enables signing events using the browser's NIP-07 extension. Listens on
+    /// `127.0.0.1:51034`.
+    #[arg(short = '7', long, group = "signer")]
+    pub nip07:      bool,
     /// Fallbacks relay to write and read from it. Multiple relays can be
     /// passed.
     #[arg(short, long)]
@@ -86,6 +84,10 @@ pub struct CliOptions {
          hide_default_value = true, value_parser = parsers::parse_config_path
      )]
     pub config:     CliConfig,
+    /// The state of options. Some values that are used by them but should not
+    /// be entered via the CLI
+    #[arg(skip)]
+    pub state:      OptionsState,
 }
 
 /// N34 commands
@@ -124,7 +126,7 @@ pub enum Commands {
 impl CliOptions {
     /// Gets the public key of the user.
     pub async fn pubkey(&self) -> N34Result<PublicKey> {
-        let Some(signer) = self.signer()? else {
+        let Some(signer) = self.signer().await? else {
             unreachable!(
                 "This method should only be called when a signer is required. If this panic \
                  occurs, it indicates a bug where the command failed to properly require a signer \
@@ -136,10 +138,21 @@ impl CliOptions {
     }
 
     /// Returns the signer
-    pub fn signer(&self) -> N34Result<Option<Arc<dyn NostrSigner + 'static>>> {
-        if self.config.keyring_secret_key {
+    pub async fn signer(&self) -> N34Result<Option<Arc<dyn NostrSigner + 'static>>> {
+        if self.nip07 {
+            self.state.browser_signer_proxy.start().await?;
+
+            println!(
+                "Browser signer proxy started at: {}",
+                self.state.browser_signer_proxy.url()
+            );
+
+            // FIXME: Use `BrowserSignerProxy::is_session_active` after it release
+            // nostr@0.44.0
+            tokio::time::sleep(Duration::from_secs(10)).await;
+
             return Ok(Some(
-                Cli::user_keypair(self.secret_key.clone())?.into_nostr_signer(),
+                self.state.browser_signer_proxy.clone().into_nostr_signer(),
             ));
         }
 

src/cli/config.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://gnu.org/licenses/gpl-3.0.html>.
 
-use std::{collections::HashSet, fs, path::PathBuf};
+use std::{collections::HashSet, fs, net::SocketAddr, path::PathBuf};
 
 use nostr::{
     nips::{nip19::Nip19Coordinate, nip46::NostrConnectURI},
@@ -76,6 +76,9 @@ pub struct CliConfig {
     /// Whether to use the system keyring to store the secret key.
     #[serde(default)]
     pub keyring_secret_key: bool,
+    /// Signs events using the browser's NIP-07 extension.
+    #[serde(default)]
+    pub nip07:              Option<SocketAddr>,
 }
 
 /// A named group of repositories and relays.

src/cli/mod.rs

@@ -24,6 +24,8 @@ pub mod config;
 pub mod defaults;
 /// Macros for CLI application.
 pub mod macros;
+/// Represents the state used for CLI options.
+pub mod options_state;
 /// CLI arguments parsers
 pub mod parsers;
 /// CLI traits
@@ -31,10 +33,13 @@ pub mod traits;
 /// Common helper types used throughout the CLI.
 pub mod types;
 
+
 use clap::Parser;
 use clap_verbosity_flag::Verbosity;
 use nostr::key::Keys;
 use nostr::key::SecretKey;
+use nostr_browser_signer_proxy::BrowserSignerProxy;
+use nostr_browser_signer_proxy::BrowserSignerProxyOptions;
 use nostr_keyring::KeyringError;
 use nostr_keyring::NostrKeyring;
 use types::RelayOrSet;
@@ -42,6 +47,7 @@ use types::RelayOrSet;
 pub use self::commands::*;
 pub use self::config::*;
 use self::traits::CommandRunner;
+use crate::cli::options_state::BROWSER_SIGNER_PROXY_TIMEOUT;
 use crate::error::N34Error;
 use crate::error::N34Result;
 use crate::nostr_utils::traits::NostrKeyringErrorUtils;
@@ -143,10 +149,29 @@ pub fn post_cli(mut cli: Cli) -> N34Result<Cli> {
         cli.options.relays = relays.iter().cloned().map(RelayOrSet::Relay).collect();
     }
 
-    if cli.options.bunker_url.is_none()
-        && let Some(bunker_url) = &cli.options.config.bunker_url
+    // Automatically sets the signer based on the configuration if no signer
+    // is provided.
+    if !cli.options.nip07
+        && cli.options.bunker_url.is_none()
+        && (cli.options.secret_key.is_none() || cli.options.config.keyring_secret_key)
     {
-        cli.options.bunker_url = Some(bunker_url.clone());
+        if let Some(addr) = cli.options.config.nip07 {
+            cli.options.nip07 = true;
+            cli.options.state.browser_signer_proxy = BrowserSignerProxy::new(
+                BrowserSignerProxyOptions::default()
+                    .timeout(BROWSER_SIGNER_PROXY_TIMEOUT)
+                    .ip_addr(addr.ip())
+                    .port(addr.port()),
+            );
+        } else if let Some(bunker_url) = &cli.options.config.bunker_url {
+            cli.options.bunker_url = Some(bunker_url.clone());
+        } else if cli.options.config.keyring_secret_key {
+            cli.options.secret_key = Some(
+                Cli::user_keypair(cli.options.secret_key)?
+                    .secret_key()
+                    .clone(),
+            );
+        }
     }
 
     Ok(cli)

src/cli/options_state.rs

@@ -0,0 +1,56 @@
+// n34 - A CLI to interact with NIP-34 and other stuff related to codes in nostr
+// Copyright (C) 2025 Awiteb <a@4rs.nl>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://gnu.org/licenses/gpl-3.0.html>.
+
+use std::{
+    net::{Ipv4Addr, SocketAddr, SocketAddrV4},
+    time::Duration,
+};
+
+use nostr_browser_signer_proxy::{BrowserSignerProxy, BrowserSignerProxyOptions};
+
+/// The default socket address used for the NIP-07 signer proxy, set to
+/// localhost on port 51034.
+pub const DEFAULT_NIP07_PROXY_ADDR: SocketAddr =
+    SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::LOCALHOST, 51034));
+
+/// How long to wait for the proxy response (3 minutes).
+pub const BROWSER_SIGNER_PROXY_TIMEOUT: Duration = Duration::from_secs(60 * 3);
+
+
+/// Represents the state used for CLI options.
+pub struct OptionsState {
+    /// The browser signer proxy, will be used if `--nip07` is enabled
+    pub browser_signer_proxy: BrowserSignerProxy,
+}
+
+impl Default for OptionsState {
+    fn default() -> Self {
+        Self {
+            browser_signer_proxy: default_browser_signer_proxy(),
+        }
+    }
+}
+
+/// Build the default browser signer proxy
+#[inline]
+fn default_browser_signer_proxy() -> BrowserSignerProxy {
+    BrowserSignerProxy::new(
+        BrowserSignerProxyOptions::default()
+            .timeout(BROWSER_SIGNER_PROXY_TIMEOUT)
+            .ip_addr(DEFAULT_NIP07_PROXY_ADDR.ip())
+            .port(DEFAULT_NIP07_PROXY_ADDR.port()),
+    )
+}

src/cli/parsers.rs

@@ -75,8 +75,8 @@ pub fn parse_config_path(config_path: &str) -> N34Result<CliConfig> {
     CliConfig::load(path)
 }
 
-// Parses a bunker URL and checks if it's a valid Nostr Connect URI.
-// Returns an error if the URL is not a valid bunker URL.
+/// Parses a bunker URL and checks if it's a valid Nostr Connect URI.
+/// Returns an error if the URL is not a valid bunker URL.
 pub fn parse_bunker_url(bunker_url: &str) -> N34Result<NostrConnectURI> {
     match NostrConnectURI::parse(bunker_url) {
         Ok(url) if url.is_bunker() => Ok(url),

src/error.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://gnu.org/licenses/gpl-3.0.html>.
 
-use std::process::ExitCode;
+use std::{net::AddrParseError, process::ExitCode};
 
 use nostr::{
     event::{Kind, builder::Error as EventBuilderError},
@@ -47,6 +47,10 @@ pub enum N34Error {
     Io(#[from] std::io::Error),
     #[error("Signer Error: {0}")]
     SignerError(#[from] SignerError),
+    #[error("Invalid Browser Signer Proxy Address: {0}")]
+    Addr(#[from] AddrParseError),
+    #[error("Browser Signer Proxy Error: {0}")]
+    BrowserSignerProxy(#[from] nostr_browser_signer_proxy::Error),
     #[error("Keyring error: {0}")]
     Keyring(#[from] nostr_keyring::Error),
     #[error("{0}")]
@@ -92,8 +96,8 @@ pub enum N34Error {
     #[error("One naddr is required for this command")]
     EmptyNaddrs,
     #[error(
-        "This command requires a signer to sign events. Use `--secret-key` or `--bunker-url` to \
-         provide a signer"
+        "This command requires a signer to sign events. Use `--secret-key`, `--nip07` or \
+         `--bunker-url` to provide a signer"
     )]
     SignerRequired,
     #[error(

src/nostr_utils/mod.rs

@@ -114,7 +114,7 @@ impl NostrClient {
         let mut client_builder =
             Client::builder().opts(ClientOptions::new().verify_subscriptions(true));
 
-        if let Ok(Some(signer)) = options.signer() {
+        if let Ok(Some(signer)) = options.signer().await {
             client_builder = client_builder.signer(signer);
         }