From f42c4ace561c2f4d7772a48e293e8fc4984db08c Mon Sep 17 00:00:00 2001 From: victor Date: Mon, 25 Aug 2025 00:09:16 +0200 Subject: [PATCH] bless --- .gitignore | 1 + Cargo.lock | 1439 ++++++++++++++++++++++++++++++++++++++++ Cargo.toml | 16 + database/genesis.json | 7 + database/state.json | 5 + database/tx.db | 15 + src/args.rs | 41 ++ src/block.rs | 22 + src/error.rs | 53 ++ src/log.rs | 115 ++++ src/main.rs | 45 ++ src/network_browser.rs | 3 + src/network_native.rs | 125 ++++ src/node.rs | 104 +++ src/tx.rs | 38 ++ 15 files changed, 2029 insertions(+) create mode 100644 .gitignore create mode 100644 Cargo.lock create mode 100644 Cargo.toml create mode 100644 database/genesis.json create mode 100644 database/state.json create mode 100644 database/tx.db create mode 100644 src/args.rs create mode 100644 src/block.rs create mode 100644 src/error.rs create mode 100644 src/log.rs create mode 100644 src/main.rs create mode 100644 src/network_browser.rs create mode 100644 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+1,16 @@ +[package] +name = "blockchain" +version = "0.1.0" +edition = "2024" + +[dependencies] +chrono = "0.4.41" +clap = { version = "4.5.45", features = ["derive"] } +serde = { version = "1.0.219", features = ["derive"] } +serde_json = "1.0.143" +thiserror = "2.0.16" +tokio = { version = "1.47.1", features = ["full"] } +tokio-tungstenite = "0.27.0" +warp = { version = "0.4.2", features = ["server", "websocket"] } +wasm-bindgen = "0.2.100" +web-sys = { version = "0.3.77", features = ["WebSocket"] } diff --git a/database/genesis.json b/database/genesis.json new file mode 100644 index 0000000..2f570ee --- /dev/null +++ b/database/genesis.json @@ -0,0 +1,7 @@ +{ + "genesis_time": "2019-03-18T00:00:00.000000000Z", + "chain_id": "the-blockchain-bar-ledger", + "balances": { + "andrej": 1000000 + } +} diff --git a/database/state.json b/database/state.json new file mode 100644 index 0000000..2a93c6a --- /dev/null +++ b/database/state.json @@ -0,0 +1,5 @@ +{ + "balances": { + "andrej": 998801 + } +} diff --git a/database/tx.db b/database/tx.db new file mode 100644 index 0000000..b189925 --- /dev/null +++ b/database/tx.db @@ -0,0 +1,15 @@ +[ + { + "head": { + "previous_hash": "0000", + "timestamp": 1234567890, + "merkle_root": "abc123", + "block_hash": "def456", + "nonce": 5 + }, + "tx": [ + {"from": "alice", "to": "bob", "value": 10, "data": ""}, + {"from": "bob", "to": "charlie", "value": 5, "data": ""} + ] + } +] diff --git a/src/args.rs b/src/args.rs new file mode 100644 index 0000000..6c4dcaa --- /dev/null +++ b/src/args.rs @@ -0,0 +1,41 @@ +use clap::{Parser, Subcommand}; +use crate::tx::Tx; + +#[derive(Parser, Debug)] +#[command(version, about, long_about = None)] +pub struct Args { + #[command(subcommand)] + command: Commands +} + +#[derive(Subcommand, Debug)] +pub enum Commands { + /// Transaction Options (add, ...) + #[command(short_flag = 't')] + Tx { + #[command(subcommand)] + tx_command: TxCmd + }, + /// Show accounts and balances + #[command(short_flag = 'l')] + List, + #[command(short_flag = 's')] + Seed +} + +#[derive(Subcommand, Debug)] +pub enum TxCmd { + /// Add a new transaction to the DB + #[command(short_flag = 'a')] + Add(Tx) +} + +impl Args { + pub fn get_commands(&self) -> &Commands { + &self.command + } +} + +pub fn get_args() -> Args { + Args::parse() +} diff --git a/src/block.rs b/src/block.rs new file mode 100644 index 0000000..9583bf0 --- /dev/null +++ b/src/block.rs @@ -0,0 +1,22 @@ +use crate::tx::Tx; + +#[derive(Debug, serde::Deserialize, serde::Serialize)] +struct BlockHeader { + previous_hash: String, + timestamp: u64, + merkle_root: String, + block_hash: String, + nonce: u32 +} + +#[derive(Debug, serde::Deserialize, serde::Serialize)] +pub struct Block { + head: BlockHeader, + tx: Vec +} + +impl Block { + pub fn get_header(&self) -> &BlockHeader { + &self.head + } +} diff --git a/src/error.rs b/src/error.rs new file mode 100644 index 0000000..24104fa --- /dev/null +++ b/src/error.rs @@ -0,0 +1,53 @@ +use thiserror::Error; + +#[allow(dead_code)] +#[derive(Error, Debug)] +pub enum BlockchainError { + #[error("invalid account creation")] + InvalidAccountCreation, + #[error("Transactional error")] + Tx(#[from] TxError) +} + +#[allow(dead_code)] +#[derive(Error, Debug)] +pub enum TxError { + #[error("from field is empty")] + FromEmpty, + #[error("to field is empty")] + ToEmpty, + #[error("insuffitient fonds")] + FromInsuffitientFonds, + #[error("0 value transaction")] + ValueEmpty, + #[error("account {0} not found in database")] + UnknownAccount(String) +} + +pub fn print_error_chain(err: &dyn std::error::Error) { + eprintln!("Error: {}", err); + + let mut source = err.source(); + let mut level = 1; + + while let Some(err) = source { + eprintln!(" {}: {}", level, err); + source = err.source(); + level += 1; + } +} + +pub fn handle_error(err: BlockchainError) { + match &err { + BlockchainError::Tx(tx) => { + match tx { + TxError::FromEmpty => { } + TxError::ToEmpty => { } + _ => {} + } + } + _ => {} + } + print_error_chain(&err) +} + diff --git a/src/log.rs b/src/log.rs new file mode 100644 index 0000000..f88c409 --- /dev/null +++ b/src/log.rs @@ -0,0 +1,115 @@ +pub const INFO: usize = 0; +pub const DEBUG: usize = 1; +pub const WARNING: usize = 2; +pub const ERROR: usize = 3; +pub const FATAL: usize = 4; + +pub const LOG_LEVEL: [&str; 5] = [ + "INFO", + "DEBUG", + "WARNING", + "ERROR", + "FATAL", +]; + +use chrono::Utc; + +pub fn colored(text: &str, color: &str) -> String { + // For terminals: use ANSI escape codes + let ansi_code = match color { + "black" => "30", + "red" => "31", + "green" => "32", + "yellow" => "33", + "blue" => "34", + "purple" => "35", + "cyan" => "36", + "white" => "37", + _ => "0", // default no color + }; + format!("\x1b[{ansi_code}m{text}\x1b[0m") +} + +pub fn current_timestamp() -> String { + Utc::now().format("%Y-%m-%d@%H:%M:%S").to_string() +} + +/// You can use this macro to create error messages that will show in the console +/// if run on the client or in the terminal if run on the server +/// +/// log_levels are : +/// - INFO +/// - DEBUG +/// - WARNING +/// - ERROR +/// - FATAL +/// +/// important: FATAL will cause the thread to panic and stop execution +#[macro_export] +macro_rules! log { + ($level:expr, $($arg:tt)*) => {{ + let formatted_msg = format!($($arg)*); + match $level { + $crate::log::INFO => { + println!( + "[{}] {} | {}", + $crate::log::colored($crate::log::LOG_LEVEL[$level], "green"), + $crate::log::current_timestamp(), + formatted_msg + ); + }, + $crate::log::DEBUG => { + println!( + "[{}] [{}:{}] {} | {}", + $crate::log::LOG_LEVEL[$level], + file!(), + line!(), + $crate::log::current_timestamp(), + formatted_msg + ); + }, + $crate::log::WARNING => { + println!( + "[{}] [{}:{}] {} | {}", + $crate::log::colored($crate::log::LOG_LEVEL[$level], "yellow"), + file!(), + line!(), + $crate::log::current_timestamp(), + formatted_msg + ); + }, + $crate::log::ERROR => { + println!( + "[{}] [{}:{}] {} | {}", + $crate::log::colored($crate::log::LOG_LEVEL[$level], "red"), + file!(), + line!(), + $crate::log::current_timestamp(), + formatted_msg + ); + }, + $crate::log::FATAL => { + println!( + "[{}] [{}:{}] {} | {}", + $crate::log::colored($crate::log::LOG_LEVEL[$level], "red"), + file!(), + line!(), + $crate::log::current_timestamp(), + formatted_msg + ); + if $level == $crate::log::FATAL { + panic!("Fatal error encountered: {}", formatted_msg); + } + }, + _ => { + println!( + "[{}] {} {}", + $crate::log::LOG_LEVEL[$crate::log::ERROR], + "loggin error: log_level value invalid:", + $level + ); + } + } + }}; +} + diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..8798fff --- /dev/null +++ b/src/main.rs @@ -0,0 +1,45 @@ +use error::{ BlockchainError, handle_error }; + +#[macro_use] +pub mod log; +pub mod node; +pub mod tx; +pub mod error; +pub mod block; +pub mod args; +pub mod network_native; +pub mod network_browser; + +use crate::tx::Tx; +use crate::args::{get_args, TxCmd, Commands}; + +fn add_transaction(tx: Tx) -> Result<(), BlockchainError> { + Ok(()) +} + +fn list_accounts() { + println!("Account Balances:\n-----------------"); +} + +#[tokio::main] +async fn main() { + + let args = get_args(); + + match args.get_commands() { + Commands::Tx{ tx_command } => { + match tx_command { + TxCmd::Add(tx) => { + add_transaction(tx.clone()).unwrap_or_else(|e| handle_error(e)) + } + } + }, + Commands::List => { + list_accounts() + } + Commands::Seed => { + network_native::NativeNode::run_as_seed().await; + } + } + println!("Hello, world!"); +} diff --git a/src/network_browser.rs b/src/network_browser.rs new file mode 100644 index 0000000..15943b2 --- /dev/null +++ b/src/network_browser.rs @@ -0,0 +1,3 @@ +pub struct BrowserNetwork { + +} diff --git a/src/network_native.rs b/src/network_native.rs new file mode 100644 index 0000000..7a49d63 --- /dev/null +++ b/src/network_native.rs @@ -0,0 +1,125 @@ +use crate::node::{ Account, Blockchain, }; +use crate::block::Block; +use warp::Filter; +use std::io::{Read, Write}; +use std::collections::HashMap; +use crate::log::*; + +use crate::network_native; + +struct TcpPeer { + stream: tokio::net::TcpStream, + addr: std::net::SocketAddr +} + +pub struct NativeNode { + tcp: Vec, + ws: Vec, + chain: crate::node::Blockchain, + db_file: std::fs::File +} + +async fn handle_browser_connection(websocket: warp::ws::WebSocket) { + println!("Browser connected via WebSocket on addr {:?}", websocket); +} + +async fn handle_tcp_connections(listner: tokio::net::TcpListener) { + loop { + match listner.accept().await { + Ok((stream, addr)) => { + + }, + Err(e) => { + println!("Failed to accept TCP connection: {}", e) + } + } + } +} + + +impl NativeNode{ + + pub fn persist(&mut self) { + for t in self.chain.blocks() { + let json = serde_json::to_string(&t).unwrap(); + self.db_file.write(json.as_bytes()).unwrap(); + } + } + + pub fn new(chain: Blockchain, db_file: std::fs::File) -> Self { + Self { + tcp: Vec::new(), + ws: Vec::new(), + chain, + db_file + } + } + + pub fn new_seed() -> Self { + log!(INFO, "Running As Seed Node"); + let cwd = std::env::current_dir().unwrap(); + let mut genpath = std::path::PathBuf::from(&cwd); + genpath.push("database"); + genpath.push("genesis.json"); + let mut gen_file = std::fs::File::open(genpath).unwrap(); + + let mut buf = String::new(); + gen_file.read_to_string(&mut buf).unwrap(); + + let mut db_file: std::fs::File = { + let mut db_path = std::path::PathBuf::from(&cwd); + db_path.push("database"); + db_path.push("tx.db"); + + std::fs::OpenOptions::new().read(true).write(true).create(true).open(&db_path).unwrap() + }; + + let balances: HashMap = { + if let Ok(genesis) = serde_json::from_str::(&buf) { + genesis.balances.clone() + } else { + HashMap::new() + } + }; + + buf.clear(); + db_file.read_to_string(&mut buf).unwrap(); + + let block = serde_json::from_str::>(&buf).unwrap(); + let chain = Blockchain::new(balances, block, vec![]); + + Self::new(chain, db_file) + } + + pub async fn connect_to_peer(&mut self, addr: &str) -> Result<(), Box> { + println!("Attempting to connect to peer: {}", addr); + + let stream = tokio::net::TcpStream::connect(addr).await?; + let peer_addr = stream.peer_addr()?; + + println!("Connected to peer: {}", peer_addr); + + let peer = TcpPeer { + stream, + addr: peer_addr + }; + + + Ok(()) + } + + pub async fn run_as_seed() { + let node = NativeNode::new_seed(); + let tcp_listner = tokio::net::TcpListener::bind("0.0.0.0:8333").await.unwrap(); + let websocket_route = warp::path("ws") + .and(warp::ws()) + .map(|ws: warp::ws::Ws| { + ws.on_upgrade(handle_browser_connection) + }); + let web_server = warp::serve(websocket_route).run(([0, 0, 0, 0], 8080)); + tokio::select! { + _ = web_server => {} + _ = handle_tcp_connections(tcp_listner) => {} + } + } +} diff --git a/src/node.rs b/src/node.rs new file mode 100644 index 0000000..d1810d2 --- /dev/null +++ b/src/node.rs @@ -0,0 +1,104 @@ +use crate::tx::Tx; +use crate::error::{ BlockchainError, TxError }; +use std::collections::HashMap; + +use crate::block::Block; + +pub type Account = String; + +#[derive(serde::Deserialize, serde::Serialize, Debug)] +pub struct Genesis { + pub genesis_time: String, + pub chain_id: String, + pub balances: std::collections::HashMap +} + +#[derive(Debug)] +pub struct Blockchain { + balances: std::collections::HashMap, + blocks: Vec, + tx_mempool: Vec, +} + +#[allow(dead_code)] +impl Blockchain { + pub fn open_account(&mut self, tx: Tx) -> Result<(), BlockchainError> { + if !tx.is_new_account() { + Err(BlockchainError::InvalidAccountCreation) + } else { + self.add(tx) + } + } + + pub fn add(&mut self, tx: Tx) -> Result<(), BlockchainError> { + self.apply(&tx)?; + self.tx_mempool.push(tx); + Ok(()) + } + + pub fn apply(&mut self, tx: &Tx) -> Result<(), BlockchainError> { + match tx.validate() { + Ok(_) => {}, + Err(e) => return Err(BlockchainError::Tx(e)) + } + + if let Some(from_balance) = self.balances.get_mut(tx.get_from()) { + if *from_balance > tx.get_value() { + *from_balance -= tx.get_value(); + } else { + return Err(BlockchainError::Tx(TxError::FromInsuffitientFonds)) + } + } else { + return Err(BlockchainError::Tx(TxError::UnknownAccount(tx.get_from().to_string()))) + } + + if let Some(to_balance) = self.balances.get_mut(&tx.get_to().to_string()) { + *to_balance += tx.get_value() + } else { + if tx.is_new_account() { + self.balances.insert(tx.get_to().to_string(), tx.get_value()); + } else { + return Err(BlockchainError::Tx(TxError::UnknownAccount(tx.get_to().to_string()))) + } + } + + Ok(()) + } + + pub fn new(balances: HashMap, blocks: Vec, tx_mempool: Vec) -> Blockchain { + return Self { + balances, + blocks, + tx_mempool + } + } + +} + +#[derive(Debug)] +enum BlockchainEvent { + // Connection events + // NewTcpPeer(TcpPeer), + // NewBrowserPeer(BrowserPeer), + PeerDisconnected(String), + + // Message events + // MessageReceived { message: NetworkMessage, from: String }, + + // User commands + ConnectToPeer(String), + ListPeers, + + // Blockchain events + MineBlock, + BlockMined(Block), +} + +impl Blockchain { + pub fn get_balances(&self) -> &std::collections::HashMap { + &self.balances + } + pub fn blocks(&self) -> &[Block] { + &self.blocks + } +} diff --git a/src/tx.rs b/src/tx.rs new file mode 100644 index 0000000..7b87960 --- /dev/null +++ b/src/tx.rs @@ -0,0 +1,38 @@ +use crate::node::Account; +use crate::error::TxError; + +#[derive(serde::Deserialize, serde::Serialize, Debug, clap::Args, Clone)] +pub struct Tx { + from: Account, + to: Account, + value: u32, + data: String +} + +impl Tx { + pub fn validate(&self) -> Result<(), TxError> { + if self.from.is_empty() { + return Err(TxError::FromEmpty) + } else if self.to.is_empty() { + return Err(TxError::ToEmpty) + } else if self.value == 0 { + return Err(TxError::ValueEmpty) + } + Ok(()) + } + pub fn is_new_account(&self) -> bool { + return self.data == "new_account"; + } + pub fn is_reward(&self) -> bool { + return self.data == "reward"; + } + pub fn get_from(&self) -> &str { + &self.from + } + pub fn get_to(&self) -> &str { + &self.to + } + pub fn get_value(&self) -> u32 { + self.value + } +}