const core = require('@actions/core'); const child_process = require('child_process'); const fs = require('fs'); const crypto = require('crypto'); const { homePath, sshAgentCmd, sshAddCmd, gitCmd } = require('./paths.js'); try { const privateKey = core.getInput('ssh-private-key'); const logPublicKey = core.getBooleanInput('log-public-key', {default: true}); if (!privateKey) { core.setFailed("The ssh-private-key argument is empty. Maybe the secret has not been configured, or you are using a wrong secret name in your workflow file."); return; } const homeSsh = homePath + '/.ssh'; console.log(`Adding GitHub.com keys to ${homeSsh}/known_hosts`); fs.mkdirSync(homeSsh, { recursive: true }); fs.appendFileSync(`${homeSsh}/known_hosts`, '\ngithub.com ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBEmKSENjQEezOmxkZMy7opKgwFB9nkt5YRrYMjNuG5N87uRgg6CLrbo5wAdT/y6v0mKV0U2w0WZ2YB/++Tpockg=\n'); fs.appendFileSync(`${homeSsh}/known_hosts`, '\ngithub.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOMqqnkVzrm0SdG6UOoqKLsabgH5C9okWi0dh2l9GKJl\n'); fs.appendFileSync(`${homeSsh}/known_hosts`, '\ngithub.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==\n'); console.log("Starting ssh-agent"); const authSock = core.getInput('ssh-auth-sock'); const sshAgentArgs = (authSock && authSock.length > 0) ? ['-a', authSock] : []; // Extract auth socket path and agent pid and set them as job variables child_process.execFileSync(sshAgentCmd, sshAgentArgs).toString().split("\n").forEach(function(line) { const matches = /^(SSH_AUTH_SOCK|SSH_AGENT_PID)=(.*); export \1/.exec(line); if (matches && matches.length > 0) { // This will also set process.env accordingly, so changes take effect for this script core.exportVariable(matches[1], matches[2]) console.log(`${matches[1]}=${matches[2]}`); } }); console.log("Adding private key(s) to agent"); privateKey.split(/(?=-----BEGIN)/).forEach(function(key) { child_process.execFileSync(sshAddCmd, ['-'], { input: key.trim() + "\n" }); }); console.log("Key(s) added:"); child_process.execFileSync(sshAddCmd, ['-l'], { stdio: 'inherit' }); console.log('Configuring deployment key(s)'); child_process.execFileSync(sshAddCmd, ['-L']).toString().trim().split(/\r?\n/).forEach(function(key) { const parts = key.match(/\bgithub\.com[:/]([_.a-z0-9-]+\/[_.a-z0-9-]+)/i); if (!parts) { if (logPublicKey) { console.log(`Comment for (public) key '${key}' does not match GitHub URL pattern. Not treating it as a GitHub deploy key.`); } return; } const sha256 = crypto.createHash('sha256').update(key).digest('hex'); const ownerAndRepo = parts[1].replace(/\.git$/, ''); fs.writeFileSync(`${homeSsh}/key-${sha256}`, key + "\n", { mode: '600' }); child_process.execSync(`${gitCmd} config --global --replace-all url."git@key-${sha256}.github.com:${ownerAndRepo}".insteadOf "https://github.com/${ownerAndRepo}"`); child_process.execSync(`${gitCmd} config --global --add url."git@key-${sha256}.github.com:${ownerAndRepo}".insteadOf "git@github.com:${ownerAndRepo}"`); child_process.execSync(`${gitCmd} config --global --add url."git@key-${sha256}.github.com:${ownerAndRepo}".insteadOf "ssh://git@github.com/${ownerAndRepo}"`); const sshConfig = `\nHost key-${sha256}.github.com\n` + ` HostName github.com\n` + ` IdentityFile ${homeSsh}/key-${sha256}\n` + ` IdentitiesOnly yes\n`; fs.appendFileSync(`${homeSsh}/config`, sshConfig); console.log(`Added deploy-key mapping: Use identity '${homeSsh}/key-${sha256}' for GitHub repository ${ownerAndRepo}`); }); } catch (error) { if (error.code == 'ENOENT') { console.log(`The '${error.path}' executable could not be found. Please make sure it is on your PATH and/or the necessary packages are installed.`); console.log(`PATH is set to: ${process.env.PATH}`); } core.setFailed(error.message); }