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registry-setup.ts
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registry-setup.ts
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/**********************************************************************
* Copyright (C) 2022-2023 Red Hat, Inc.
*
* 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.
*
* SPDX-License-Identifier: Apache-2.0
***********************************************************************/
import * as extensionApi from '@podman-desktop/api';
import * as path from 'node:path';
import * as os from 'node:os';
import * as fs from 'node:fs';
import { isLinux, isMac, isWindows } from './util';
export type ContainerAuthConfigEntry = {
[key: string]: {
auth: string;
};
};
export type ContainersAuthConfigFile = {
auths?: ContainerAuthConfigEntry;
};
export class RegistrySetup {
private localRegistries: Map<string, extensionApi.Registry> = new Map();
protected getAuthFileLocation(): string {
let podmanConfigContainersPath;
if (isMac() || isWindows()) {
podmanConfigContainersPath = path.resolve(os.homedir(), '.config/containers');
} else if (isLinux()) {
const xdgRuntimeDirectory = process.env['XDG_RUNTIME_DIR'];
podmanConfigContainersPath = path.resolve(xdgRuntimeDirectory, 'containers');
}
// resolve the auth.json file path
return path.resolve(podmanConfigContainersPath, 'auth.json');
}
protected async updateRegistries(): Promise<void> {
// read the file
const authFile = await this.readAuthFile();
const inFileRegistries: extensionApi.Registry[] = [];
const source = 'podman';
if (authFile.auths) {
// loop over the auth entries
for (const [key, value] of Object.entries(authFile.auths)) {
const serverUrl = key;
const decoded = Buffer.from(value.auth, 'base64').toString();
// split the decoded string into username and password separated by :
const [username, secret] = decoded.split(':');
const registry = {
source,
serverUrl,
username,
secret,
};
inFileRegistries.push(registry);
}
}
// compare file and inMemory registries
// For each registry in the file that is not in the inMemory, add it
const toBeAdded = inFileRegistries.filter(fileRegistry => !this.localRegistries.has(fileRegistry.serverUrl));
toBeAdded.forEach(registry => {
// do not use the disposable from registerRegistry as we want to keep the registry after extension is stopped.
extensionApi.registry.registerRegistry(registry);
this.localRegistries.set(registry.serverUrl, registry);
});
// For each registry in the inMemory that is not in the file, remove it
const toBeRemoved = Array.from(this.localRegistries.values()).filter(
localRegistry =>
!inFileRegistries.find(inFileLocalRegistry => inFileLocalRegistry.serverUrl === localRegistry.serverUrl),
);
toBeRemoved.forEach(registry => {
this.localRegistries.delete(registry.serverUrl);
extensionApi.registry.unregisterRegistry(registry);
});
}
public async setup(): Promise<void> {
extensionApi.registry.registerRegistryProvider({
name: 'podman',
create: function (registryCreateOptions: extensionApi.RegistryCreateOptions): extensionApi.Registry {
const registry: extensionApi.Registry = {
source: '',
...registryCreateOptions,
};
return registry;
},
});
// handle addition of the registry in the file
extensionApi.registry.onDidRegisterRegistry(async registry => {
// external change, update the local registries
if (!this.localRegistries.has(registry.serverUrl)) {
this.localRegistries.set(registry.serverUrl, registry);
// update the file
const authFile = await this.readAuthFile();
if (!authFile.auths) {
authFile.auths = {};
}
authFile.auths[registry.serverUrl] = {
auth: Buffer.from(`${registry.username}:${registry.secret}`).toString('base64'),
};
await this.writeAuthFile(JSON.stringify(authFile, undefined, 8));
}
});
// handle removal of the registry in the file
extensionApi.registry.onDidUnregisterRegistry(async registry => {
// external change, update the local registries
if (this.localRegistries.has(registry.serverUrl)) {
this.localRegistries.delete(registry.serverUrl);
// update the file
const authFile = await this.readAuthFile();
if (authFile.auths) {
delete authFile.auths[registry.serverUrl];
}
await this.writeAuthFile(JSON.stringify(authFile, undefined, 8));
}
});
// handle update of the registry in the file
extensionApi.registry.onDidUpdateRegistry(async registry => {
// external change, update the local registries
if (this.localRegistries.has(registry.serverUrl)) {
this.localRegistries.set(registry.serverUrl, registry);
// update the file
const authFile = await this.readAuthFile();
if (!authFile.auths) {
authFile.auths = {};
}
authFile.auths[registry.serverUrl] = {
auth: Buffer.from(`${registry.username}:${registry.secret}`).toString('base64'),
};
await this.writeAuthFile(JSON.stringify(authFile, undefined, 8));
}
});
// check if the file exists
if (!fs.existsSync(this.getAuthFileLocation())) {
return;
}
// need to monitor this file
fs.watchFile(this.getAuthFileLocation(), () => {
this.updateRegistries().catch((error: unknown) => {
console.error('Error updating registries', error);
});
});
// else init with the content of this file
await this.updateRegistries();
}
protected async readAuthFile(): Promise<ContainersAuthConfigFile> {
// when we have a fresh installation of podman, auth file might not have been created
if (!fs.existsSync(this.getAuthFileLocation())) {
const emptyAuthFile = { auths: {} } as ContainersAuthConfigFile;
await this.writeAuthFile(JSON.stringify(emptyAuthFile, undefined, 8));
}
return new Promise((resolve, reject) => {
fs.readFile(this.getAuthFileLocation(), 'utf-8', (err, data) => {
if (err) {
reject(err);
} else {
let authFile: ContainersAuthConfigFile;
try {
authFile = JSON.parse(data);
} catch (error) {
console.error('Error parsing auth file', error);
// return empty auth file
resolve({});
}
resolve(authFile);
}
});
});
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
protected writeAuthFile(data: any): Promise<void> {
return new Promise((resolve, reject) => {
fs.writeFile(this.getAuthFileLocation(), data, 'utf8', err => {
if (err) {
reject(err);
} else {
resolve();
}
});
});
}
}