1 line
12 KiB
JSON
1 line
12 KiB
JSON
{"ast":null,"code":"// Copyright 2018 Joyent, Inc.\nmodule.exports = {\n read: read,\n write: write\n};\n\nvar assert = require('assert-plus');\n\nvar Buffer = require('safer-buffer').Buffer;\n\nvar utils = require('../utils');\n\nvar Key = require('../key');\n\nvar PrivateKey = require('../private-key');\n\nvar pem = require('./pem');\n\nvar ssh = require('./ssh');\n\nvar rfc4253 = require('./rfc4253');\n\nvar dnssec = require('./dnssec');\n\nvar putty = require('./putty');\n\nvar DNSSEC_PRIVKEY_HEADER_PREFIX = 'Private-key-format: v1';\n\nfunction read(buf, options) {\n if (typeof buf === 'string') {\n if (buf.trim().match(/^[-]+[ ]*BEGIN/)) return pem.read(buf, options);\n if (buf.match(/^\\s*ssh-[a-z]/)) return ssh.read(buf, options);\n if (buf.match(/^\\s*ecdsa-/)) return ssh.read(buf, options);\n if (buf.match(/^putty-user-key-file-2:/i)) return putty.read(buf, options);\n if (findDNSSECHeader(buf)) return dnssec.read(buf, options);\n buf = Buffer.from(buf, 'binary');\n } else {\n assert.buffer(buf);\n if (findPEMHeader(buf)) return pem.read(buf, options);\n if (findSSHHeader(buf)) return ssh.read(buf, options);\n if (findPuTTYHeader(buf)) return putty.read(buf, options);\n if (findDNSSECHeader(buf)) return dnssec.read(buf, options);\n }\n\n if (buf.readUInt32BE(0) < buf.length) return rfc4253.read(buf, options);\n throw new Error('Failed to auto-detect format of key');\n}\n\nfunction findPuTTYHeader(buf) {\n var offset = 0;\n\n while (offset < buf.length && (buf[offset] === 32 || buf[offset] === 10 || buf[offset] === 9)) ++offset;\n\n if (offset + 22 <= buf.length && buf.slice(offset, offset + 22).toString('ascii').toLowerCase() === 'putty-user-key-file-2:') return true;\n return false;\n}\n\nfunction findSSHHeader(buf) {\n var offset = 0;\n\n while (offset < buf.length && (buf[offset] === 32 || buf[offset] === 10 || buf[offset] === 9)) ++offset;\n\n if (offset + 4 <= buf.length && buf.slice(offset, offset + 4).toString('ascii') === 'ssh-') return true;\n if (offset + 6 <= buf.length && buf.slice(offset, offset + 6).toString('ascii') === 'ecdsa-') return true;\n return false;\n}\n\nfunction findPEMHeader(buf) {\n var offset = 0;\n\n while (offset < buf.length && (buf[offset] === 32 || buf[offset] === 10)) ++offset;\n\n if (buf[offset] !== 45) return false;\n\n while (offset < buf.length && buf[offset] === 45) ++offset;\n\n while (offset < buf.length && buf[offset] === 32) ++offset;\n\n if (offset + 5 > buf.length || buf.slice(offset, offset + 5).toString('ascii') !== 'BEGIN') return false;\n return true;\n}\n\nfunction findDNSSECHeader(buf) {\n // private case first\n if (buf.length <= DNSSEC_PRIVKEY_HEADER_PREFIX.length) return false;\n var headerCheck = buf.slice(0, DNSSEC_PRIVKEY_HEADER_PREFIX.length);\n if (headerCheck.toString('ascii') === DNSSEC_PRIVKEY_HEADER_PREFIX) return true; // public-key RFC3110 ?\n // 'domain.com. 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