ethers-rs/ethers-etherscan/src/contract.rs

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use crate::{Client, Response, Result};
use ethers_core::abi::{Abi, Address};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
/// Arguments for verifying contracts
#[derive(Debug, Clone, Serialize)]
pub struct VerifyContract {
pub address: Address,
pub source: String,
#[serde(rename = "codeformat")]
pub code_format: CodeFormat,
/// if codeformat=solidity-standard-json-input, then expected as
/// `erc20.sol:erc20`
#[serde(rename = "contractname", skip_serializing_if = "Option::is_none")]
pub contract_name: Option<String>,
#[serde(rename = "compilerversion")]
pub compiler_version: String,
/// applicable when codeformat=solidity-single-file
#[serde(rename = "optimizationUsed", skip_serializing_if = "Option::is_none")]
optimization_used: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub runs: Option<String>,
/// NOTE: there is a typo in the etherscan API `constructorArguements`
#[serde(
rename = "constructorArguements",
skip_serializing_if = "Option::is_none"
)]
pub constructor_arguments: Option<String>,
#[serde(rename = "evmversion")]
pub evm_version: Option<String>,
#[serde(flatten)]
pub other: HashMap<String, String>,
}
impl VerifyContract {
pub fn new(address: Address, source: String, compiler_version: String) -> Self {
Self {
address,
source,
code_format: Default::default(),
contract_name: None,
compiler_version,
optimization_used: None,
runs: None,
constructor_arguments: None,
evm_version: None,
other: Default::default(),
}
}
pub fn contract_name(mut self, name: impl Into<String>) -> Self {
self.contract_name = Some(name.into());
self
}
pub fn runs(mut self, runs: u32) -> Self {
self.runs = Some(format!("{}", runs));
self
}
pub fn optimization(self, optimization: bool) -> Self {
if optimization {
self.optimized()
} else {
self.not_optimized()
}
}
pub fn optimized(mut self) -> Self {
self.optimization_used = Some("1".to_string());
self
}
pub fn not_optimized(mut self) -> Self {
self.optimization_used = Some("0".to_string());
self
}
pub fn code_format(mut self, code_format: CodeFormat) -> Self {
self.code_format = code_format;
self
}
pub fn evm_version(mut self, evm_version: impl Into<String>) -> Self {
self.evm_version = Some(evm_version.into());
self
}
pub fn constructor_arguments(
mut self,
constructor_arguments: Option<impl Into<String>>,
) -> Self {
self.constructor_arguments = constructor_arguments.map(|s| {
s.into()
// TODO is this correct?
.trim_start_matches("0x")
.to_string()
});
self
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize)]
pub enum CodeFormat {
#[serde(rename = "solidity-single-file")]
SingleFile,
#[serde(rename = "solidity-standard-json-input")]
StandardJsonInput,
}
impl AsRef<str> for CodeFormat {
fn as_ref(&self) -> &str {
match self {
CodeFormat::SingleFile => "solidity-single-file",
CodeFormat::StandardJsonInput => "solidity-standard-json-input",
}
}
}
impl Default for CodeFormat {
fn default() -> Self {
CodeFormat::SingleFile
}
}
#[derive(Debug, Serialize, Deserialize)]
pub struct ContractMetadata {
#[serde(flatten)]
pub items: Vec<Metadata>,
}
impl IntoIterator for ContractMetadata {
type Item = Metadata;
type IntoIter = std::vec::IntoIter<Metadata>;
fn into_iter(self) -> Self::IntoIter {
self.items.into_iter()
}
}
impl ContractMetadata {
/// All ABI from all contracts in the source file
pub fn abis(&self) -> Result<Vec<Abi>> {
let mut abis = Vec::with_capacity(self.items.len());
for item in &self.items {
abis.push(serde_json::from_str(&item.abi)?);
}
Ok(abis)
}
/// Combined source code of all contracts
pub fn source_code(&self) -> String {
self.items
.iter()
.map(|c| c.source_code.as_str())
.collect::<Vec<_>>()
.join("\n")
}
}
/// Etherscan contract metadata
#[derive(Debug, Serialize, Deserialize)]
pub struct Metadata {
#[serde(rename = "SourceCode")]
pub source_code: String,
#[serde(rename = "ABI")]
pub abi: String,
#[serde(rename = "ContractName")]
pub contract_name: String,
#[serde(rename = "CompilerVersion")]
pub compiler_version: String,
#[serde(rename = "OptimizationUsed")]
pub optimization_used: String,
#[serde(rename = "Runs")]
pub runs: String,
#[serde(rename = "ConstructorArguments")]
pub constructor_arguments: String,
#[serde(rename = "EVMVersion")]
pub evm_version: String,
#[serde(rename = "Library")]
pub library: String,
#[serde(rename = "LicenseType")]
pub license_type: String,
#[serde(rename = "Proxy")]
pub proxy: String,
#[serde(rename = "Implementation")]
pub implementation: String,
#[serde(rename = "SwarmSource")]
pub swarm_source: String,
}
impl Client {
/// Submit Source Code for Verification
pub async fn submit_contract_verification(
&self,
contract: &VerifyContract,
) -> Result<Response<String>> {
let body = self.create_query("contract", "verifysourcecode", contract);
Ok(self.post_form(&body).await?)
}
/// Check Source Code Verification Status with receipt received from
/// `[Self::submit_contract_verification]`
pub async fn check_contract_verification_status(
&self,
guid: impl AsRef<str>,
) -> Result<Response<String>> {
let body = self.create_query(
"contract",
"checkverifystatus",
HashMap::from([("guid", guid.as_ref())]),
);
Ok(self.post_form(&body).await?)
}
/// Returns the contract ABI of a verified contract
///
/// ```no_run
/// # use ethers_etherscan::Client;
/// # use ethers_core::types::Chain;
///
/// # #[tokio::main]
/// # async fn main() {
/// let client = Client::new(Chain::Mainnet, "API_KEY").unwrap();
/// let abi = client
/// .contract_abi("0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413".parse().unwrap())
/// .await.unwrap();
/// # }
/// ```
pub async fn contract_abi(&self, address: Address) -> Result<Abi> {
let query = self.create_query("contract", "getabi", HashMap::from([("address", address)]));
let resp: Response<String> = self.get_json(&query).await?;
Ok(serde_json::from_str(&resp.result)?)
}
/// Get Contract Source Code for Verified Contract Source Codes
/// ```no_run
/// # use ethers_etherscan::Client;
/// # use ethers_core::types::Chain;
///
/// # #[tokio::main]
/// # async fn main() {
/// let client = Client::new(Chain::Mainnet, "API_KEY").unwrap();
/// let meta = client
/// .contract_source_code("0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413".parse().unwrap())
/// .await.unwrap();
/// let code = meta.source_code();
/// # }
/// ```
pub async fn contract_source_code(&self, address: Address) -> Result<ContractMetadata> {
let query = self.create_query(
"contract",
"getsourcecode",
HashMap::from([("address", address)]),
);
let response: Response<Vec<Metadata>> = self.get_json(&query).await?;
Ok(ContractMetadata {
items: response.result,
})
}
}
#[cfg(test)]
mod tests {
use crate::{contract::VerifyContract, Client};
use ethers_core::types::Chain;
#[tokio::test]
#[ignore]
async fn can_fetch_contract_abi() {
let client = Client::new_from_env(Chain::Mainnet).unwrap();
let _abi = client
.contract_abi(
"0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413"
.parse()
.unwrap(),
)
.await
.unwrap();
}
#[tokio::test]
#[ignore]
async fn can_fetch_contract_source_code() {
let client = Client::new_from_env(Chain::Mainnet).unwrap();
let _meta = client
.contract_source_code(
"0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413"
.parse()
.unwrap(),
)
.await
.unwrap();
}
#[tokio::test]
#[ignore]
async fn can_verify_contract() {
// TODO this needs further investigation
// https://etherscan.io/address/0x9e744c9115b74834c0f33f4097f40c02a9ac5c33#code
let contract = include_str!("../resources/UniswapExchange.sol");
let address = "0x9e744c9115b74834c0f33f4097f40c02a9ac5c33"
.parse()
.unwrap();
let compiler_version = "v0.5.17+commit.d19bba13";
let constructor_args = "0x000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000005f5e1000000000000000000000000000000000000000000000000000000000000000007596179537761700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000035941590000000000000000000000000000000000000000000000000000000000";
let client = Client::new_from_env(Chain::Mainnet).unwrap();
let contract =
VerifyContract::new(address, contract.to_string(), compiler_version.to_string())
.constructor_arguments(Some(constructor_args))
.optimization(true)
.runs(200);
let _resp = client.submit_contract_verification(&contract).await;
}
}