From 55a4f1fc869e41aca748c63d3018f0448b1606e0 Mon Sep 17 00:00:00 2001 From: pack Date: Sun, 9 Aug 2026 10:37:07 +0000 Subject: first commit --- node_modules/detect-libc/lib/detect-libc.js | 313 ++++++++++++++++++++++++++++ node_modules/detect-libc/lib/elf.js | 39 ++++ node_modules/detect-libc/lib/filesystem.js | 51 +++++ node_modules/detect-libc/lib/process.js | 24 +++ 4 files changed, 427 insertions(+) create mode 100644 node_modules/detect-libc/lib/detect-libc.js create mode 100644 node_modules/detect-libc/lib/elf.js create mode 100644 node_modules/detect-libc/lib/filesystem.js create mode 100644 node_modules/detect-libc/lib/process.js (limited to 'node_modules/detect-libc/lib') diff --git a/node_modules/detect-libc/lib/detect-libc.js b/node_modules/detect-libc/lib/detect-libc.js new file mode 100644 index 0000000..01299b4 --- /dev/null +++ b/node_modules/detect-libc/lib/detect-libc.js @@ -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 +}; diff --git a/node_modules/detect-libc/lib/elf.js b/node_modules/detect-libc/lib/elf.js new file mode 100644 index 0000000..aa166aa --- /dev/null +++ b/node_modules/detect-libc/lib/elf.js @@ -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 +}; diff --git a/node_modules/detect-libc/lib/filesystem.js b/node_modules/detect-libc/lib/filesystem.js new file mode 100644 index 0000000..4c2443c --- /dev/null +++ b/node_modules/detect-libc/lib/filesystem.js @@ -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 +}; diff --git a/node_modules/detect-libc/lib/process.js b/node_modules/detect-libc/lib/process.js new file mode 100644 index 0000000..ee78ad2 --- /dev/null +++ b/node_modules/detect-libc/lib/process.js @@ -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 }; -- cgit v1.2.3