80 lines
2.7 KiB
JavaScript
Executable file
80 lines
2.7 KiB
JavaScript
Executable file
"use strict";
|
|
var __importDefault = (this && this.__importDefault) || function (mod) {
|
|
return (mod && mod.__esModule) ? mod : { "default": mod };
|
|
};
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.readTarget = void 0;
|
|
/*
|
|
Copyright 2023 The Sigstore Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
const fs_1 = __importDefault(require("fs"));
|
|
const error_1 = require("./error");
|
|
// Downloads and returns the specified target from the provided TUF Updater.
|
|
async function readTarget(tuf, targetPath) {
|
|
const path = await getTargetPath(tuf, targetPath);
|
|
return new Promise((resolve, reject) => {
|
|
fs_1.default.readFile(path, 'utf-8', (err, data) => {
|
|
if (err) {
|
|
reject(new error_1.TUFError({
|
|
code: 'TUF_READ_TARGET_ERROR',
|
|
message: `error reading target ${path}`,
|
|
cause: err,
|
|
}));
|
|
}
|
|
else {
|
|
resolve(data);
|
|
}
|
|
});
|
|
});
|
|
}
|
|
exports.readTarget = readTarget;
|
|
// Returns the local path to the specified target. If the target is not yet
|
|
// cached locally, the provided TUF Updater will be used to download and
|
|
// cache the target.
|
|
async function getTargetPath(tuf, target) {
|
|
let targetInfo;
|
|
try {
|
|
targetInfo = await tuf.getTargetInfo(target);
|
|
}
|
|
catch (err) {
|
|
throw new error_1.TUFError({
|
|
code: 'TUF_REFRESH_METADATA_ERROR',
|
|
message: 'error refreshing TUF metadata',
|
|
cause: err,
|
|
});
|
|
}
|
|
if (!targetInfo) {
|
|
throw new error_1.TUFError({
|
|
code: 'TUF_FIND_TARGET_ERROR',
|
|
message: `target ${target} not found`,
|
|
});
|
|
}
|
|
let path = await tuf.findCachedTarget(targetInfo);
|
|
// An empty path here means the target has not been cached locally, or is
|
|
// out of date. In either case, we need to download it.
|
|
if (!path) {
|
|
try {
|
|
path = await tuf.downloadTarget(targetInfo);
|
|
}
|
|
catch (err) {
|
|
throw new error_1.TUFError({
|
|
code: 'TUF_DOWNLOAD_TARGET_ERROR',
|
|
message: `error downloading target ${path}`,
|
|
cause: err,
|
|
});
|
|
}
|
|
}
|
|
return path;
|
|
}
|