Files
codeql-action/src/github.ts

125 lines
4.0 KiB
TypeScript

import { ActionsEnvVars, type ReadOnlyEnv } from "./environment";
import { ConfigurationError } from "./errors";
export enum GitHubVariant {
/** [GitHub.com](https://github.com) */
DOTCOM = "GitHub.com",
/** [GitHub Enterprise Server](https://docs.github.com/en/enterprise-server@latest/admin/overview/about-github-enterprise-server) */
GHES = "GitHub Enterprise Server",
/** [GitHub Enterprise Cloud with data residency](https://docs.github.com/en/enterprise-cloud@latest/admin/data-residency/about-github-enterprise-cloud-with-data-residency) */
GHEC_DR = "GitHub Enterprise Cloud with data residency",
}
export type GitHubVersion =
| { type: GitHubVariant.DOTCOM }
| { type: GitHubVariant.GHEC_DR }
| { type: GitHubVariant.GHES; version: string };
/** A string representing a GitHub instance address. */
export type InstanceURL = string;
/**
* The URL for github.com.
*/
export const GITHUB_DOTCOM_URL: InstanceURL = "https://github.com";
/** A string representing a GitHub API instance address. */
export type InstanceApiURL = string;
/**
* The URL for api.github.com.
*/
export const GITHUB_DOTCOM_API_URL: InstanceApiURL = "https://api.github.com";
/**
* Represents information about a GitHub instance, how to authenticate to it,
* and how to authenticate to other repos on it.
*/
export type GitHubApiCombinedDetails = GitHubApiDetails &
GitHubApiExternalRepoDetails;
/** Represents information about a GitHub instance. */
export type GitHubInstance = {
/** The base URL of the GitHub instance, such as `https://github.com`. */
url: string;
/**
* The API base URL of the GitHub instance, such as `https://api.github.com`.
* Typically this is the `api.` subdomain of the `url` domain.
*/
apiURL: string | undefined;
};
/** Represents a {@link GitHubInstance} with a token for accessing the API. */
export type GitHubApiDetails = GitHubInstance & {
/** The token to use for accessing the API of the GitHub instance. */
auth?: string;
};
/**
* Represents information for accessing a repository on the same GitHub instance as the Action
* is currently running on.
*/
export type GitHubApiExternalRepoDetails = {
/** An optional token for accessing repo(s) on the same GitHub instance. */
externalRepoAuth?: string;
};
/**
* Parses user input of a github.com or GHES URL to a canonical form.
* Removes any API prefix or suffix if one is present.
*/
export function parseGitHubUrl(inputUrl: string): string {
const originalUrl = inputUrl;
if (inputUrl.indexOf("://") === -1) {
inputUrl = `https://${inputUrl}`;
}
if (!inputUrl.startsWith("http://") && !inputUrl.startsWith("https://")) {
throw new ConfigurationError(`"${originalUrl}" is not a http or https URL`);
}
let url: URL;
try {
url = new URL(inputUrl);
} catch {
throw new ConfigurationError(`"${originalUrl}" is not a valid URL`);
}
// If we detect this is trying to be to github.com
// then return with a fixed canonical URL.
if (url.hostname === "github.com" || url.hostname === "api.github.com") {
return GITHUB_DOTCOM_URL;
}
// Remove the API prefix if it's present
if (url.pathname.indexOf("/api/v3") !== -1) {
url.pathname = url.pathname.substring(0, url.pathname.indexOf("/api/v3"));
}
// Also consider subdomain isolation on GHES
if (url.hostname.startsWith("api.")) {
url.hostname = url.hostname.substring(4);
}
// Normalise path to having a trailing slash for consistency
if (!url.pathname.endsWith("/")) {
url.pathname = `${url.pathname}/`;
}
return url.toString();
}
/** Retrieves a {@link GitHubInstance} describing the instance we are running on. */
export function getCurrentInstance(env: ReadOnlyEnv): GitHubInstance {
return {
url: env.getRequired(ActionsEnvVars.GITHUB_SERVER_URL),
apiURL: env.getRequired(ActionsEnvVars.GITHUB_API_URL),
};
}
/** Retrieves a {@link GitHubInstance} describing the GitHub.com instance. */
export function getDotcomInstance(): GitHubInstance {
return {
url: GITHUB_DOTCOM_URL,
apiURL: GITHUB_DOTCOM_API_URL,
};
}