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fea495a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | import { NEXT_INTERCEPTION_MARKER_PREFIX, NEXT_QUERY_PARAM_PREFIX } from '../../lib/constants';
/**
* Converts a Node.js IncomingHttpHeaders object to a Headers object. Any
* headers with multiple values will be joined with a comma and space. Any
* headers that have an undefined value will be ignored and others will be
* coerced to strings.
*
* @param nodeHeaders the headers object to convert
* @returns the converted headers object
*/ export function fromNodeOutgoingHttpHeaders(nodeHeaders) {
const headers = new Headers();
for (let [key, value] of Object.entries(nodeHeaders)){
const values = Array.isArray(value) ? value : [
value
];
for (let v of values){
if (typeof v === 'undefined') continue;
if (typeof v === 'number') {
v = v.toString();
}
headers.append(key, v);
}
}
return headers;
}
/*
Set-Cookie header field-values are sometimes comma joined in one string. This splits them without choking on commas
that are within a single set-cookie field-value, such as in the Expires portion.
This is uncommon, but explicitly allowed - see https://tools.ietf.org/html/rfc2616#section-4.2
Node.js does this for every header *except* set-cookie - see https://github.com/nodejs/node/blob/d5e363b77ebaf1caf67cd7528224b651c86815c1/lib/_http_incoming.js#L128
React Native's fetch does this for *every* header, including set-cookie.
Based on: https://github.com/google/j2objc/commit/16820fdbc8f76ca0c33472810ce0cb03d20efe25
Credits to: https://github.com/tomball for original and https://github.com/chrusart for JavaScript implementation
*/ export function splitCookiesString(cookiesString) {
var cookiesStrings = [];
var pos = 0;
var start;
var ch;
var lastComma;
var nextStart;
var cookiesSeparatorFound;
function skipWhitespace() {
while(pos < cookiesString.length && /\s/.test(cookiesString.charAt(pos))){
pos += 1;
}
return pos < cookiesString.length;
}
function notSpecialChar() {
ch = cookiesString.charAt(pos);
return ch !== '=' && ch !== ';' && ch !== ',';
}
while(pos < cookiesString.length){
start = pos;
cookiesSeparatorFound = false;
while(skipWhitespace()){
ch = cookiesString.charAt(pos);
if (ch === ',') {
// ',' is a cookie separator if we have later first '=', not ';' or ','
lastComma = pos;
pos += 1;
skipWhitespace();
nextStart = pos;
while(pos < cookiesString.length && notSpecialChar()){
pos += 1;
}
// currently special character
if (pos < cookiesString.length && cookiesString.charAt(pos) === '=') {
// we found cookies separator
cookiesSeparatorFound = true;
// pos is inside the next cookie, so back up and return it.
pos = nextStart;
cookiesStrings.push(cookiesString.substring(start, lastComma));
start = pos;
} else {
// in param ',' or param separator ';',
// we continue from that comma
pos = lastComma + 1;
}
} else {
pos += 1;
}
}
if (!cookiesSeparatorFound || pos >= cookiesString.length) {
cookiesStrings.push(cookiesString.substring(start, cookiesString.length));
}
}
return cookiesStrings;
}
/**
* Converts a Headers object to a Node.js OutgoingHttpHeaders object. This is
* required to support the set-cookie header, which may have multiple values.
*
* @param headers the headers object to convert
* @returns the converted headers object
*/ export function toNodeOutgoingHttpHeaders(headers) {
const nodeHeaders = {};
const cookies = [];
if (headers) {
for (const [key, value] of headers.entries()){
if (key.toLowerCase() === 'set-cookie') {
// We may have gotten a comma joined string of cookies, or multiple
// set-cookie headers. We need to merge them into one header array
// to represent all the cookies.
cookies.push(...splitCookiesString(value));
nodeHeaders[key] = cookies.length === 1 ? cookies[0] : cookies;
} else {
nodeHeaders[key] = value;
}
}
}
return nodeHeaders;
}
/**
* Validate the correctness of a user-provided URL.
*/ export function validateURL(url) {
try {
return String(new URL(String(url)));
} catch (error) {
throw Object.defineProperty(new Error(`URL is malformed "${String(url)}". Please use only absolute URLs - https://nextjs.org/docs/messages/middleware-relative-urls`, {
cause: error
}), "__NEXT_ERROR_CODE", {
value: "E61",
enumerable: false,
configurable: true
});
}
}
/**
* Normalizes `nxtP` and `nxtI` query param values to remove the prefix.
* This function does not mutate the input key.
*/ export function normalizeNextQueryParam(key) {
const prefixes = [
NEXT_QUERY_PARAM_PREFIX,
NEXT_INTERCEPTION_MARKER_PREFIX
];
for (const prefix of prefixes){
if (key !== prefix && key.startsWith(prefix)) {
return key.substring(prefix.length);
}
}
return null;
}
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