@atproto/oauth-scopes
Version:
A library for manipulating and validating ATproto OAuth scopes in TypeScript.
86 lines • 2.96 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.BlobPermission = exports.DEFAULT_ACCEPT = void 0;
const mime_js_1 = require("../lib/mime.js");
const parser_js_1 = require("../lib/parser.js");
const syntax_string_js_1 = require("../lib/syntax-string.js");
const syntax_js_1 = require("../lib/syntax.js");
exports.DEFAULT_ACCEPT = Object.freeze(['*/*']);
class BlobPermission {
constructor(accept) {
Object.defineProperty(this, "accept", {
enumerable: true,
configurable: true,
writable: true,
value: accept
});
}
matches(options) {
return (0, mime_js_1.matchesAnyAccept)(this.accept, options.mime);
}
toString() {
return BlobPermission.parser.format(this);
}
static fromString(scope) {
if (!(0, syntax_js_1.isScopeStringFor)(scope, 'blob'))
return null;
const syntax = syntax_string_js_1.ScopeStringSyntax.fromString(scope);
return BlobPermission.fromSyntax(syntax);
}
static fromSyntax(syntax) {
const result = BlobPermission.parser.parse(syntax);
if (!result)
return null;
return new BlobPermission(result.accept);
}
static scopeNeededFor(options) {
return BlobPermission.parser.format({
accept: [options.mime],
});
}
}
exports.BlobPermission = BlobPermission;
Object.defineProperty(BlobPermission, "parser", {
enumerable: true,
configurable: true,
writable: true,
value: new parser_js_1.Parser('blob', {
accept: {
multiple: true,
required: true,
validate: mime_js_1.isAccept,
normalize: (value) => {
// Returns a more concise representation of the accept values.
if (value.includes('*/*'))
return exports.DEFAULT_ACCEPT;
return value
.map(toLowerCase)
.filter(isNonRedundant)
.sort();
},
},
}, 'accept')
});
function toLowerCase(value) {
return (typeof value === 'string' ? value.toLowerCase() : value);
}
function isNonRedundant(value, index, arr) {
if (typeof value !== 'string') {
return true;
}
if (value.endsWith('/*')) {
// assuming the array contains unique element, wildcards cannot be redundant
// with one another ('image/*' is not redundant with 'text/*')
return true;
}
const base = value.split('/', 1)[0];
if (arr.includes(`${base}/*`)) {
// If another value in the array is a wildcard for the same base, we can
// skip this one as it is redundant. e.g. if the array contains 'image/png'
// and 'image/*', we can skip 'image/png' because 'image/*' already covers
// it.
return false;
}
return true;
}
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