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author | LinuxWizard42 <computerwizard@linuxmail.org> | 2022-10-12 22:54:37 +0300 |
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committer | LinuxWizard42 <computerwizard@linuxmail.org> | 2022-10-12 22:54:37 +0300 |
commit | 703e03aba33f234712206769f57717ba7d92d23d (patch) | |
tree | 0041f04ccb75bd5379c764e9fe42249fffe75fc3 /node_modules/sshpk/lib/formats/auto.js | |
parent | ab6e257e6e9d9a483d7e86f220d8b209a2cd7753 (diff) | |
download | FlashRunner-703e03aba33f234712206769f57717ba7d92d23d.tar.gz FlashRunner-703e03aba33f234712206769f57717ba7d92d23d.tar.zst |
Added export_allowed file to make repository visible in cgit
Diffstat (limited to 'node_modules/sshpk/lib/formats/auto.js')
-rw-r--r-- | node_modules/sshpk/lib/formats/auto.js | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/node_modules/sshpk/lib/formats/auto.js b/node_modules/sshpk/lib/formats/auto.js new file mode 100644 index 0000000..f32cd96 --- /dev/null +++ b/node_modules/sshpk/lib/formats/auto.js @@ -0,0 +1,124 @@ +// Copyright 2018 Joyent, Inc. + +module.exports = { + read: read, + write: write +}; + +var assert = require('assert-plus'); +var Buffer = require('safer-buffer').Buffer; +var utils = require('../utils'); +var Key = require('../key'); +var PrivateKey = require('../private-key'); + +var pem = require('./pem'); +var ssh = require('./ssh'); +var rfc4253 = require('./rfc4253'); +var dnssec = require('./dnssec'); +var putty = require('./putty'); + +var DNSSEC_PRIVKEY_HEADER_PREFIX = 'Private-key-format: v1'; + +function read(buf, options) { + if (typeof (buf) === 'string') { + if (buf.trim().match(/^[-]+[ ]*BEGIN/)) + return (pem.read(buf, options)); + if (buf.match(/^\s*ssh-[a-z]/)) + return (ssh.read(buf, options)); + if (buf.match(/^\s*ecdsa-/)) + return (ssh.read(buf, options)); + if (buf.match(/^putty-user-key-file-2:/i)) + return (putty.read(buf, options)); + if (findDNSSECHeader(buf)) + return (dnssec.read(buf, options)); + buf = Buffer.from(buf, 'binary'); + } else { + assert.buffer(buf); + if (findPEMHeader(buf)) + return (pem.read(buf, options)); + if (findSSHHeader(buf)) + return (ssh.read(buf, options)); + if (findPuTTYHeader(buf)) + return (putty.read(buf, options)); + if (findDNSSECHeader(buf)) + return (dnssec.read(buf, options)); + } + if (buf.readUInt32BE(0) < buf.length) + return (rfc4253.read(buf, options)); + throw (new Error('Failed to auto-detect format of key')); +} + +function findPuTTYHeader(buf) { + var offset = 0; + while (offset < buf.length && + (buf[offset] === 32 || buf[offset] === 10 || buf[offset] === 9)) + ++offset; + if (offset + 22 <= buf.length && + buf.slice(offset, offset + 22).toString('ascii').toLowerCase() === + 'putty-user-key-file-2:') + return (true); + return (false); +} + +function findSSHHeader(buf) { + var offset = 0; + while (offset < buf.length && + (buf[offset] === 32 || buf[offset] === 10 || buf[offset] === 9)) + ++offset; + if (offset + 4 <= buf.length && + buf.slice(offset, offset + 4).toString('ascii') === 'ssh-') + return (true); + if (offset + 6 <= buf.length && + buf.slice(offset, offset + 6).toString('ascii') === 'ecdsa-') + return (true); + return (false); +} + +function findPEMHeader(buf) { + var offset = 0; + while (offset < buf.length && + (buf[offset] === 32 || buf[offset] === 10)) + ++offset; + if (buf[offset] !== 45) + return (false); + while (offset < buf.length && + (buf[offset] === 45)) + ++offset; + while (offset < buf.length && + (buf[offset] === 32)) + ++offset; + if (offset + 5 > buf.length || + buf.slice(offset, offset + 5).toString('ascii') !== 'BEGIN') + return (false); + return (true); +} + +function findDNSSECHeader(buf) { + // private case first + if (buf.length <= DNSSEC_PRIVKEY_HEADER_PREFIX.length) + return (false); + var headerCheck = buf.slice(0, DNSSEC_PRIVKEY_HEADER_PREFIX.length); + if (headerCheck.toString('ascii') === DNSSEC_PRIVKEY_HEADER_PREFIX) + return (true); + + // public-key RFC3110 ? + // 'domain.com. IN KEY ...' or 'domain.com. IN DNSKEY ...' + // skip any comment-lines + if (typeof (buf) !== 'string') { + buf = buf.toString('ascii'); + } + var lines = buf.split('\n'); + var line = 0; + /* JSSTYLED */ + while (lines[line].match(/^\;/)) + line++; + if (lines[line].toString('ascii').match(/\. IN KEY /)) + return (true); + if (lines[line].toString('ascii').match(/\. IN DNSKEY /)) + return (true); + return (false); +} + +function write(key, options) { + throw (new Error('"auto" format cannot be used for writing')); +} |