You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
77 lines
2.0 KiB
77 lines
2.0 KiB
var path = require('path');
|
|
var url = require('url');
|
|
|
|
var isRemoteResource = require('../utils/is-remote-resource');
|
|
var hasProtocol = require('../utils/has-protocol');
|
|
|
|
var HTTP_PROTOCOL = 'http:';
|
|
|
|
function isAllowedResource(uri, isRemote, rules) {
|
|
var match;
|
|
var absoluteUri;
|
|
var allowed = isRemote ? false : true;
|
|
var rule;
|
|
var isNegated;
|
|
var normalizedRule;
|
|
var i;
|
|
|
|
if (rules.length === 0) {
|
|
return false;
|
|
}
|
|
|
|
if (isRemote && !hasProtocol(uri)) {
|
|
uri = HTTP_PROTOCOL + uri;
|
|
}
|
|
|
|
match = isRemote ?
|
|
url.parse(uri).host :
|
|
uri;
|
|
|
|
absoluteUri = isRemote ?
|
|
uri :
|
|
path.resolve(uri);
|
|
|
|
for (i = 0; i < rules.length; i++) {
|
|
rule = rules[i];
|
|
isNegated = rule[0] == '!';
|
|
normalizedRule = rule.substring(1);
|
|
|
|
if (isNegated && isRemote && isRemoteRule(normalizedRule)) {
|
|
allowed = allowed && !isAllowedResource(uri, true, [normalizedRule]);
|
|
} else if (isNegated && !isRemote && !isRemoteRule(normalizedRule)) {
|
|
allowed = allowed && !isAllowedResource(uri, false, [normalizedRule]);
|
|
} else if (isNegated) {
|
|
allowed = allowed && true;
|
|
} else if (rule == 'all') {
|
|
allowed = true;
|
|
} else if (isRemote && rule == 'local') {
|
|
allowed = allowed || false;
|
|
} else if (isRemote && rule == 'remote') {
|
|
allowed = true;
|
|
} else if (!isRemote && rule == 'remote') {
|
|
allowed = false;
|
|
} else if (!isRemote && rule == 'local') {
|
|
allowed = true;
|
|
} else if (rule === match) {
|
|
allowed = true;
|
|
} else if (rule === uri) {
|
|
allowed = true;
|
|
} else if (isRemote && absoluteUri.indexOf(rule) === 0) {
|
|
allowed = true;
|
|
} else if (!isRemote && absoluteUri.indexOf(path.resolve(rule)) === 0) {
|
|
allowed = true;
|
|
} else if (isRemote != isRemoteRule(normalizedRule)) {
|
|
allowed = allowed && true;
|
|
} else {
|
|
allowed = false;
|
|
}
|
|
}
|
|
|
|
return allowed;
|
|
}
|
|
|
|
function isRemoteRule(rule) {
|
|
return isRemoteResource(rule) || url.parse(HTTP_PROTOCOL + '//' + rule).host == rule;
|
|
}
|
|
|
|
module.exports = isAllowedResource;
|