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import { GitAPI } from "./git";
import { RequestInfo } from "./git_types";
import { readdir } from "fs";
type VerificationResultType = "SUCCESS" | "NOT_FOUND" | "INVALID" | "ACCESS_DENIED";
export class VerificationResult {
constructor(result: VerificationResultType, subject?: string) {
this.success = result === "SUCCESS";
if(result !== "SUCCESS") {
const verification_error_types = {
NOT_FOUND: { code: 404, message: `${String(subject?.substr(0, 1).toUpperCase()) + subject?.substr(1)} not found!` },
INVALID: { code: 403, message: `Invalid ${subject}` },
ACCESS_DENIED: { code: 403, message: "Access denied!" }
};
this.message = verification_error_types[result].message;
this.code = verification_error_types[result].code;
}
}
success: boolean;
code: number | null = null;
message: string | null = null;
}
export function verifyRepoName(base_dir: string, repo_name: string): Promise<VerificationResult> {
return new Promise<VerificationResult>(resolve => {
console.log(repo_name);
const is_valid_repo_name = (/^[a-zA-Z0-9.\-_]+$/u).test(repo_name);
if(!is_valid_repo_name) {
resolve(new VerificationResult("INVALID", "repository"));
return;
}
readdir(base_dir, (err, dir_content) => {
if(err) {
resolve(new VerificationResult("NOT_FOUND", "repository"));
return;
}
const dir_content_repos = dir_content.filter(repo => repo.endsWith(".git"));
if(!dir_content_repos.includes(repo_name + ".git")) {
resolve(new VerificationResult("NOT_FOUND", "repository"));
return;
}
resolve(new VerificationResult("SUCCESS"));
});
});
}
export async function verifySHA(git: GitAPI, repo_name: string, sha: string): Promise<VerificationResult> {
if(!(/^[a-fA-F0-9]+$/u).test(sha)) {
return new VerificationResult("INVALID", "sha");
}
const object_exists = await git.doesObjectExist(repo_name, sha);
if(!object_exists) {
return new VerificationResult("NOT_FOUND", "object");
}
return new VerificationResult("SUCCESS");
}
export function verifyGitRequest(request_info: RequestInfo): VerificationResult {
if((/\.\/|\.\./u).test(request_info.parsed_url.pathname)) {
return new VerificationResult("INVALID", "path");
}
if(request_info.service !== "git-upload-pack") {
return new VerificationResult("ACCESS_DENIED");
}
return new VerificationResult("SUCCESS");
}
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