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author | Minteck <contact@minteck.org> | 2021-12-21 16:52:28 +0100 |
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committer | Minteck <contact@minteck.org> | 2021-12-21 16:52:28 +0100 |
commit | 46e43f4bde4a35785b4997b81e86cd19f046b69b (patch) | |
tree | c53c2f826f777f9d6b2d249dab556feb72a6c3a6 /src/node_modules/validator/es/lib/isIP.js | |
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-rw-r--r-- | src/node_modules/validator/es/lib/isIP.js | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/node_modules/validator/es/lib/isIP.js b/src/node_modules/validator/es/lib/isIP.js new file mode 100644 index 0000000..9280d87 --- /dev/null +++ b/src/node_modules/validator/es/lib/isIP.js @@ -0,0 +1,124 @@ +import assertString from './util/assertString'; +/** +11.3. Examples + + The following addresses + + fe80::1234 (on the 1st link of the node) + ff02::5678 (on the 5th link of the node) + ff08::9abc (on the 10th organization of the node) + + would be represented as follows: + + fe80::1234%1 + ff02::5678%5 + ff08::9abc%10 + + (Here we assume a natural translation from a zone index to the + <zone_id> part, where the Nth zone of any scope is translated into + "N".) + + If we use interface names as <zone_id>, those addresses could also be + represented as follows: + + fe80::1234%ne0 + ff02::5678%pvc1.3 + ff08::9abc%interface10 + + where the interface "ne0" belongs to the 1st link, "pvc1.3" belongs + to the 5th link, and "interface10" belongs to the 10th organization. + * * */ + +var ipv4Maybe = /^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/; +var ipv6Block = /^[0-9A-F]{1,4}$/i; +export default function isIP(str) { + var version = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ''; + assertString(str); + version = String(version); + + if (!version) { + return isIP(str, 4) || isIP(str, 6); + } else if (version === '4') { + if (!ipv4Maybe.test(str)) { + return false; + } + + var parts = str.split('.').sort(function (a, b) { + return a - b; + }); + return parts[3] <= 255; + } else if (version === '6') { + var addressAndZone = [str]; // ipv6 addresses could have scoped architecture + // according to https://tools.ietf.org/html/rfc4007#section-11 + + if (str.includes('%')) { + addressAndZone = str.split('%'); + + if (addressAndZone.length !== 2) { + // it must be just two parts + return false; + } + + if (!addressAndZone[0].includes(':')) { + // the first part must be the address + return false; + } + + if (addressAndZone[1] === '') { + // the second part must not be empty + return false; + } + } + + var blocks = addressAndZone[0].split(':'); + var foundOmissionBlock = false; // marker to indicate :: + // At least some OS accept the last 32 bits of an IPv6 address + // (i.e. 2 of the blocks) in IPv4 notation, and RFC 3493 says + // that '::ffff:a.b.c.d' is valid for IPv4-mapped IPv6 addresses, + // and '::a.b.c.d' is deprecated, but also valid. + + var foundIPv4TransitionBlock = isIP(blocks[blocks.length - 1], 4); + var expectedNumberOfBlocks = foundIPv4TransitionBlock ? 7 : 8; + + if (blocks.length > expectedNumberOfBlocks) { + return false; + } // initial or final :: + + + if (str === '::') { + return true; + } else if (str.substr(0, 2) === '::') { + blocks.shift(); + blocks.shift(); + foundOmissionBlock = true; + } else if (str.substr(str.length - 2) === '::') { + blocks.pop(); + blocks.pop(); + foundOmissionBlock = true; + } + + for (var i = 0; i < blocks.length; ++i) { + // test for a :: which can not be at the string start/end + // since those cases have been handled above + if (blocks[i] === '' && i > 0 && i < blocks.length - 1) { + if (foundOmissionBlock) { + return false; // multiple :: in address + } + + foundOmissionBlock = true; + } else if (foundIPv4TransitionBlock && i === blocks.length - 1) {// it has been checked before that the last + // block is a valid IPv4 address + } else if (!ipv6Block.test(blocks[i])) { + return false; + } + } + + if (foundOmissionBlock) { + return blocks.length >= 1; + } + + return blocks.length === expectedNumberOfBlocks; + } + + return false; +}
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