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| // This is universal, works with Infura -- set provider accordingly | |
| const ethers = require('ethers') | |
| //const provider = ethers.getDefaultProvider('rinkeby') | |
| const provider = new ethers.providers.JsonRpcProvider(process.env.WEB3_URL) | |
| function hex_to_ascii(str1) { | |
| var hex = str1.toString(); | |
| var str = ''; | |
| for (var n = 0; n < hex.length; n += 2) { | |
| str += String.fromCharCode(parseInt(hex.substr(n, 2), 16)); | |
| } | |
| return str; | |
| } | |
| async function reason() { | |
| var args = process.argv.slice(2) | |
| let hash = args[0] | |
| console.log('tx hash:', hash) | |
| console.log('provider:', process.env.WEB3_URL) | |
| let tx = await provider.getTransaction(hash) | |
| if (!tx) { | |
| console.log('tx not found') | |
| } else { | |
| let code = await provider.call(tx, tx.blockNumber) | |
| let reason = hex_to_ascii(code.substr(138)) | |
| console.log('revert reason:', reason) | |
| } | |
| } | |
| reason() |
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| #!/bin/bash | |
| # This is for geth | |
| # Fetching revert reason -- https://ethereum.stackexchange.com/questions/48383/how-to-receive-revert-reason-for-past-transactions | |
| if [ -z "$1" ] | |
| then | |
| echo "Usage: revert-reason <TX_HASH>" | |
| exit | |
| fi | |
| TX=$1 | |
| SCRIPT=" tx = eth.getTransaction( \"$TX\" ); tx.data = tx.input; eth.call(tx, tx.blockNumber)" | |
| geth --exec "$SCRIPT" attach http://localhost:8545 | cut -d '"' -f 2 | cut -c139- | xxd -r -p | |
| echo |
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