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Index: node_modules/detect-libc/README.md =================================================================== --- node_modules/detect-libc/README.md (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) +++ node_modules/detect-libc/README.md (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) @@ -0,0 +1,163 @@ +# detect-libc + +Node.js module to detect details of the C standard library (libc) +implementation provided by a given Linux system. + +Currently supports detection of GNU glibc and MUSL libc. + +Provides asychronous and synchronous functions for the +family (e.g. `glibc`, `musl`) and version (e.g. `1.23`, `1.2.3`). + +The version numbers of libc implementations +are not guaranteed to be semver-compliant. + +For previous v1.x releases, please see the +[v1](https://github.com/lovell/detect-libc/tree/v1) branch. + +## Install + +```sh +npm install detect-libc +``` + +## API + +### GLIBC + +```ts +const GLIBC: string = 'glibc'; +``` + +A String constant containing the value `glibc`. + +### MUSL + +```ts +const MUSL: string = 'musl'; +``` + +A String constant containing the value `musl`. + +### family + +```ts +function family(): Promise; +``` + +Resolves asychronously with: + +* `glibc` or `musl` when the libc family can be determined +* `null` when the libc family cannot be determined +* `null` when run on a non-Linux platform + +```js +const { family, GLIBC, MUSL } = require('detect-libc'); + +switch (await family()) { + case GLIBC: ... + case MUSL: ... + case null: ... +} +``` + +### familySync + +```ts +function familySync(): string | null; +``` + +Synchronous version of `family()`. + +```js +const { familySync, GLIBC, MUSL } = require('detect-libc'); + +switch (familySync()) { + case GLIBC: ... + case MUSL: ... + case null: ... +} +``` + +### version + +```ts +function version(): Promise; +``` + +Resolves asychronously with: + +* The version when it can be determined +* `null` when the libc family cannot be determined +* `null` when run on a non-Linux platform + +```js +const { version } = require('detect-libc'); + +const v = await version(); +if (v) { + const [major, minor, patch] = v.split('.'); +} +``` + +### versionSync + +```ts +function versionSync(): string | null; +``` + +Synchronous version of `version()`. + +```js +const { versionSync } = require('detect-libc'); + +const v = versionSync(); +if (v) { + const [major, minor, patch] = v.split('.'); +} +``` + +### isNonGlibcLinux + +```ts +function isNonGlibcLinux(): Promise; +``` + +Resolves asychronously with: + +* `false` when the libc family is `glibc` +* `true` when the libc family is not `glibc` +* `false` when run on a non-Linux platform + +```js +const { isNonGlibcLinux } = require('detect-libc'); + +if (await isNonGlibcLinux()) { ... } +``` + +### isNonGlibcLinuxSync + +```ts +function isNonGlibcLinuxSync(): boolean; +``` + +Synchronous version of `isNonGlibcLinux()`. + +```js +const { isNonGlibcLinuxSync } = require('detect-libc'); + +if (isNonGlibcLinuxSync()) { ... } +``` + +## Licensing + +Copyright 2017 Lovell Fuller and others. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0.html) + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. Index: node_modules/detect-libc/index.d.ts =================================================================== --- node_modules/detect-libc/index.d.ts (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) +++ node_modules/detect-libc/index.d.ts (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) @@ -0,0 +1,14 @@ +// Copyright 2017 Lovell Fuller and others. +// SPDX-License-Identifier: Apache-2.0 + +export const GLIBC: 'glibc'; +export const MUSL: 'musl'; + +export function family(): Promise; +export function familySync(): string | null; + +export function isNonGlibcLinux(): Promise; +export function isNonGlibcLinuxSync(): boolean; + +export function version(): Promise; +export function versionSync(): string | null; Index: node_modules/detect-libc/lib/detect-libc.js =================================================================== --- node_modules/detect-libc/lib/detect-libc.js (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) +++ node_modules/detect-libc/lib/detect-libc.js (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) @@ -0,0 +1,313 @@ +// Copyright 2017 Lovell Fuller and others. +// SPDX-License-Identifier: Apache-2.0 + +'use strict'; + +const childProcess = require('child_process'); +const { isLinux, getReport } = require('./process'); +const { LDD_PATH, SELF_PATH, readFile, readFileSync } = require('./filesystem'); +const { interpreterPath } = require('./elf'); + +let cachedFamilyInterpreter; +let cachedFamilyFilesystem; +let cachedVersionFilesystem; + +const command = 'getconf GNU_LIBC_VERSION 2>&1 || true; ldd --version 2>&1 || true'; +let commandOut = ''; + +const safeCommand = () => { + if (!commandOut) { + return new Promise((resolve) => { + childProcess.exec(command, (err, out) => { + commandOut = err ? ' ' : out; + resolve(commandOut); + }); + }); + } + return commandOut; +}; + +const safeCommandSync = () => { + if (!commandOut) { + try { + commandOut = childProcess.execSync(command, { encoding: 'utf8' }); + } catch (_err) { + commandOut = ' '; + } + } + return commandOut; +}; + +/** + * A String constant containing the value `glibc`. + * @type {string} + * @public + */ +const GLIBC = 'glibc'; + +/** + * A Regexp constant to get the GLIBC Version. + * @type {string} + */ +const RE_GLIBC_VERSION = /LIBC[a-z0-9 \-).]*?(\d+\.\d+)/i; + +/** + * A String constant containing the value `musl`. + * @type {string} + * @public + */ +const MUSL = 'musl'; + +const isFileMusl = (f) => f.includes('libc.musl-') || f.includes('ld-musl-'); + +const familyFromReport = () => { + const report = getReport(); + if (report.header && report.header.glibcVersionRuntime) { + return GLIBC; + } + if (Array.isArray(report.sharedObjects)) { + if (report.sharedObjects.some(isFileMusl)) { + return MUSL; + } + } + return null; +}; + +const familyFromCommand = (out) => { + const [getconf, ldd1] = out.split(/[\r\n]+/); + if (getconf && getconf.includes(GLIBC)) { + return GLIBC; + } + if (ldd1 && ldd1.includes(MUSL)) { + return MUSL; + } + return null; +}; + +const familyFromInterpreterPath = (path) => { + if (path) { + if (path.includes('/ld-musl-')) { + return MUSL; + } else if (path.includes('/ld-linux-')) { + return GLIBC; + } + } + return null; +}; + +const getFamilyFromLddContent = (content) => { + content = content.toString(); + if (content.includes('musl')) { + return MUSL; + } + if (content.includes('GNU C Library')) { + return GLIBC; + } + return null; +}; + +const familyFromFilesystem = async () => { + if (cachedFamilyFilesystem !== undefined) { + return cachedFamilyFilesystem; + } + cachedFamilyFilesystem = null; + try { + const lddContent = await readFile(LDD_PATH); + cachedFamilyFilesystem = getFamilyFromLddContent(lddContent); + } catch (e) {} + return cachedFamilyFilesystem; +}; + +const familyFromFilesystemSync = () => { + if (cachedFamilyFilesystem !== undefined) { + return cachedFamilyFilesystem; + } + cachedFamilyFilesystem = null; + try { + const lddContent = readFileSync(LDD_PATH); + cachedFamilyFilesystem = getFamilyFromLddContent(lddContent); + } catch (e) {} + return cachedFamilyFilesystem; +}; + +const familyFromInterpreter = async () => { + if (cachedFamilyInterpreter !== undefined) { + return cachedFamilyInterpreter; + } + cachedFamilyInterpreter = null; + try { + const selfContent = await readFile(SELF_PATH); + const path = interpreterPath(selfContent); + cachedFamilyInterpreter = familyFromInterpreterPath(path); + } catch (e) {} + return cachedFamilyInterpreter; +}; + +const familyFromInterpreterSync = () => { + if (cachedFamilyInterpreter !== undefined) { + return cachedFamilyInterpreter; + } + cachedFamilyInterpreter = null; + try { + const selfContent = readFileSync(SELF_PATH); + const path = interpreterPath(selfContent); + cachedFamilyInterpreter = familyFromInterpreterPath(path); + } catch (e) {} + return cachedFamilyInterpreter; +}; + +/** + * Resolves with the libc family when it can be determined, `null` otherwise. + * @returns {Promise} + */ +const family = async () => { + let family = null; + if (isLinux()) { + family = await familyFromInterpreter(); + if (!family) { + family = await familyFromFilesystem(); + if (!family) { + family = familyFromReport(); + } + if (!family) { + const out = await safeCommand(); + family = familyFromCommand(out); + } + } + } + return family; +}; + +/** + * Returns the libc family when it can be determined, `null` otherwise. + * @returns {?string} + */ +const familySync = () => { + let family = null; + if (isLinux()) { + family = familyFromInterpreterSync(); + if (!family) { + family = familyFromFilesystemSync(); + if (!family) { + family = familyFromReport(); + } + if (!family) { + const out = safeCommandSync(); + family = familyFromCommand(out); + } + } + } + return family; +}; + +/** + * Resolves `true` only when the platform is Linux and the libc family is not `glibc`. + * @returns {Promise} + */ +const isNonGlibcLinux = async () => isLinux() && await family() !== GLIBC; + +/** + * Returns `true` only when the platform is Linux and the libc family is not `glibc`. + * @returns {boolean} + */ +const isNonGlibcLinuxSync = () => isLinux() && familySync() !== GLIBC; + +const versionFromFilesystem = async () => { + if (cachedVersionFilesystem !== undefined) { + return cachedVersionFilesystem; + } + cachedVersionFilesystem = null; + try { + const lddContent = await readFile(LDD_PATH); + const versionMatch = lddContent.match(RE_GLIBC_VERSION); + if (versionMatch) { + cachedVersionFilesystem = versionMatch[1]; + } + } catch (e) {} + return cachedVersionFilesystem; +}; + +const versionFromFilesystemSync = () => { + if (cachedVersionFilesystem !== undefined) { + return cachedVersionFilesystem; + } + cachedVersionFilesystem = null; + try { + const lddContent = readFileSync(LDD_PATH); + const versionMatch = lddContent.match(RE_GLIBC_VERSION); + if (versionMatch) { + cachedVersionFilesystem = versionMatch[1]; + } + } catch (e) {} + return cachedVersionFilesystem; +}; + +const versionFromReport = () => { + const report = getReport(); + if (report.header && report.header.glibcVersionRuntime) { + return report.header.glibcVersionRuntime; + } + return null; +}; + +const versionSuffix = (s) => s.trim().split(/\s+/)[1]; + +const versionFromCommand = (out) => { + const [getconf, ldd1, ldd2] = out.split(/[\r\n]+/); + if (getconf && getconf.includes(GLIBC)) { + return versionSuffix(getconf); + } + if (ldd1 && ldd2 && ldd1.includes(MUSL)) { + return versionSuffix(ldd2); + } + return null; +}; + +/** + * Resolves with the libc version when it can be determined, `null` otherwise. + * @returns {Promise} + */ +const version = async () => { + let version = null; + if (isLinux()) { + version = await versionFromFilesystem(); + if (!version) { + version = versionFromReport(); + } + if (!version) { + const out = await safeCommand(); + version = versionFromCommand(out); + } + } + return version; +}; + +/** + * Returns the libc version when it can be determined, `null` otherwise. + * @returns {?string} + */ +const versionSync = () => { + let version = null; + if (isLinux()) { + version = versionFromFilesystemSync(); + if (!version) { + version = versionFromReport(); + } + if (!version) { + const out = safeCommandSync(); + version = versionFromCommand(out); + } + } + return version; +}; + +module.exports = { + GLIBC, + MUSL, + family, + familySync, + isNonGlibcLinux, + isNonGlibcLinuxSync, + version, + versionSync +}; Index: node_modules/detect-libc/lib/elf.js =================================================================== --- node_modules/detect-libc/lib/elf.js (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) +++ node_modules/detect-libc/lib/elf.js (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) @@ -0,0 +1,39 @@ +// Copyright 2017 Lovell Fuller and others. +// SPDX-License-Identifier: Apache-2.0 + +'use strict'; + +const interpreterPath = (elf) => { + if (elf.length < 64) { + return null; + } + if (elf.readUInt32BE(0) !== 0x7F454C46) { + // Unexpected magic bytes + return null; + } + if (elf.readUInt8(4) !== 2) { + // Not a 64-bit ELF + return null; + } + if (elf.readUInt8(5) !== 1) { + // Not little-endian + return null; + } + const offset = elf.readUInt32LE(32); + const size = elf.readUInt16LE(54); + const count = elf.readUInt16LE(56); + for (let i = 0; i < count; i++) { + const headerOffset = offset + (i * size); + const type = elf.readUInt32LE(headerOffset); + if (type === 3) { + const fileOffset = elf.readUInt32LE(headerOffset + 8); + const fileSize = elf.readUInt32LE(headerOffset + 32); + return elf.subarray(fileOffset, fileOffset + fileSize).toString().replace(/\0.*$/g, ''); + } + } + return null; +}; + +module.exports = { + interpreterPath +}; Index: node_modules/detect-libc/lib/filesystem.js =================================================================== --- node_modules/detect-libc/lib/filesystem.js (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) +++ node_modules/detect-libc/lib/filesystem.js (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) @@ -0,0 +1,51 @@ +// Copyright 2017 Lovell Fuller and others. +// SPDX-License-Identifier: Apache-2.0 + +'use strict'; + +const fs = require('fs'); + +const LDD_PATH = '/usr/bin/ldd'; +const SELF_PATH = '/proc/self/exe'; +const MAX_LENGTH = 2048; + +/** + * Read the content of a file synchronous + * + * @param {string} path + * @returns {Buffer} + */ +const readFileSync = (path) => { + const fd = fs.openSync(path, 'r'); + const buffer = Buffer.alloc(MAX_LENGTH); + const bytesRead = fs.readSync(fd, buffer, 0, MAX_LENGTH, 0); + fs.close(fd, () => {}); + return buffer.subarray(0, bytesRead); +}; + +/** + * Read the content of a file + * + * @param {string} path + * @returns {Promise} + */ +const readFile = (path) => new Promise((resolve, reject) => { + fs.open(path, 'r', (err, fd) => { + if (err) { + reject(err); + } else { + const buffer = Buffer.alloc(MAX_LENGTH); + fs.read(fd, buffer, 0, MAX_LENGTH, 0, (_, bytesRead) => { + resolve(buffer.subarray(0, bytesRead)); + fs.close(fd, () => {}); + }); + } + }); +}); + +module.exports = { + LDD_PATH, + SELF_PATH, + readFileSync, + readFile +}; Index: node_modules/detect-libc/lib/process.js =================================================================== --- node_modules/detect-libc/lib/process.js (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) +++ node_modules/detect-libc/lib/process.js (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) @@ -0,0 +1,24 @@ +// Copyright 2017 Lovell Fuller and others. +// SPDX-License-Identifier: Apache-2.0 + +'use strict'; + +const isLinux = () => process.platform === 'linux'; + +let report = null; +const getReport = () => { + if (!report) { + /* istanbul ignore next */ + if (isLinux() && process.report) { + const orig = process.report.excludeNetwork; + process.report.excludeNetwork = true; + report = process.report.getReport(); + process.report.excludeNetwork = orig; + } else { + report = {}; + } + } + return report; +}; + +module.exports = { isLinux, getReport }; Index: node_modules/detect-libc/package.json =================================================================== --- node_modules/detect-libc/package.json (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) +++ node_modules/detect-libc/package.json (revision 81bc7da776d8cda42939ef4ab350c88d13b4941f) @@ -0,0 +1,44 @@ +{ + "name": "detect-libc", + "version": "2.1.2", + "description": "Node.js module to detect the C standard library (libc) implementation family and version", + "main": "lib/detect-libc.js", + "files": [ + "lib/", + "index.d.ts" + ], + "scripts": { + "test": "semistandard && nyc --reporter=text --check-coverage --branches=100 ava test/unit.js", + "changelog": "conventional-changelog -i CHANGELOG.md -s", + "bench": "node benchmark/detect-libc", + "bench:calls": "node benchmark/call-familySync.js && sleep 1 && node benchmark/call-isNonGlibcLinuxSync.js && sleep 1 && node benchmark/call-versionSync.js" + }, + "repository": { + "type": "git", + "url": "git://github.com/lovell/detect-libc.git" + }, + "keywords": [ + "libc", + "glibc", + "musl" + ], + "author": "Lovell Fuller ", + "contributors": [ + "Niklas Salmoukas ", + "Vinícius Lourenço " + ], + "license": "Apache-2.0", + "devDependencies": { + "ava": "^2.4.0", + "benchmark": "^2.1.4", + "conventional-changelog-cli": "^5.0.0", + "eslint-config-standard": "^13.0.1", + "nyc": "^15.1.0", + "proxyquire": "^2.1.3", + "semistandard": "^14.2.3" + }, + "engines": { + "node": ">=8" + }, + "types": "index.d.ts" +}