2021-02-20 23:39:03 +01:00
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const logger = require('logplease').create('ppman/package');
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const semver = require('semver');
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const config = require('../config');
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const globals = require('../globals');
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2021-03-06 07:17:56 +01:00
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const fetch = require('node-fetch');
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2021-02-20 23:39:03 +01:00
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const path = require('path');
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const fs = require('fs/promises');
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const fss = require('fs');
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const cp = require('child_process');
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const crypto = require('crypto');
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const runtime = require('../runtime');
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2021-02-20 15:13:56 +01:00
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class Package {
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constructor({language, version, download, checksum}){
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2021-02-20 23:39:03 +01:00
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this.language = language;
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this.version = semver.parse(version);
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2021-03-06 07:17:56 +01:00
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this.checksum = checksum;
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2021-02-20 23:39:03 +01:00
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this.download = download;
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}
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get installed(){
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return fss.exists_sync(path.join(this.install_path, globals.pkg_installed_file));
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}
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get download_url(){
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return this.download;
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2021-02-20 15:13:56 +01:00
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}
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get install_path(){
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return path.join(config.data_directory,
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globals.data_directories.packages,
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this.language,
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2021-02-20 23:39:03 +01:00
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this.version.raw);
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}
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async install(){
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2021-02-20 23:39:03 +01:00
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if(this.installed) throw new Error('Already installed');
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logger.info(`Installing ${this.language}-${this.version.raw}`);
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2021-02-20 15:13:56 +01:00
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2021-02-20 23:39:03 +01:00
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if(fss.exists_sync(this.install_path)){
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logger.warn(`${this.language}-${this.version.raw} has residual files. Removing them.`);
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await fs.rm(this.install_path, {recursive: true, force: true});
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}
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2021-02-20 23:39:03 +01:00
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logger.debug(`Making directory ${this.install_path}`);
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await fs.mkdir(this.install_path, {recursive: true});
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2021-02-20 23:39:03 +01:00
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logger.debug(`Downloading package from ${this.download_url} in to ${this.install_path}`);
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2021-03-06 07:17:56 +01:00
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const pkgpath = path.join(this.install_path, "pkg.tar.gz");
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const download = await fetch(this.download_url);
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const file_stream = fss.create_write_stream(pkgpath);
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await new Promise((resolve, reject) => {
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download.body.pipe(file_stream)
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download.body.on("error", reject)
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file_stream.on("finish", resolve)
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});
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2021-03-06 07:17:56 +01:00
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logger.debug('Validating checksums');
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logger.debug(`Assert sha256(pkg.tar.gz) == ${this.checksum}`)
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const cs = crypto.create_hash("sha256")
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.update(fss.readFileSync(pkgpath))
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.digest('hex');
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if(cs != this.checksum) throw new Error(`Checksum miss-match want: ${val} got: ${cs}`);
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2021-03-06 07:17:56 +01:00
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logger.debug(`Extracting package files from archive ${pkgpath} in to ${this.install_path}`);
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2021-03-05 07:29:09 +01:00
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2021-02-20 15:13:56 +01:00
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await new Promise((resolve, reject)=>{
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const proc = cp.exec(`bash -c 'cd "${this.install_path}" && tar xzf ${pkgpath}'`);
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proc.once('exit', (code,_)=>{
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if(code == 0) resolve();
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else reject(new Error('Failed to extract package'));
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});
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proc.stdout.pipe(process.stdout);
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proc.stderr.pipe(process.stderr);
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proc.once('error', reject);
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});
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logger.debug('Registering runtime');
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new runtime.Runtime(this.install_path);
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logger.debug('Caching environment');
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const get_env_command = `cd ${this.install_path}; source environment; env`;
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const envout = await new Promise((resolve, reject)=>{
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var stdout = '';
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const proc = cp.spawn('env',['-i','bash','-c',`${get_env_command}`], {
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stdio: ['ignore', 'pipe', 'pipe']});
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proc.once('exit', (code,_)=>{
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if(code == 0) resolve(stdout);
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else reject(new Error('Failed to cache environment'));
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});
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proc.stdout.on('data', (data)=>{
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stdout += data;
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});
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2021-02-20 23:39:03 +01:00
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proc.once('error', reject);
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});
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2021-02-20 23:39:03 +01:00
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const filtered_env = envout.split('\n')
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.filter(l=>!['PWD','OLDPWD','_', 'SHLVL'].includes(l.split('=',2)[0]))
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.join('\n');
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2021-02-20 23:39:03 +01:00
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await fs.write_file(path.join(this.install_path, '.env'), filtered_env);
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logger.debug('Writing installed state to disk');
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await fs.write_file(path.join(this.install_path, globals.pkg_installed_file), Date.now().toString());
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2021-02-20 23:39:03 +01:00
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logger.info(`Installed ${this.language}-${this.version.raw}`);
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2021-02-20 15:13:56 +01:00
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return {
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language: this.language,
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version: this.version.raw
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};
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}
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}
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2021-02-20 23:39:03 +01:00
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module.exports = {Package};
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