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|
use std::path::{Path, PathBuf};
use crate::config::RepoConfig;
use crate::Login;
use clap::Args;
use clap::{Parser, Subcommand};
#[derive(Parser)]
#[command()]
struct Cli {
#[command(subcommand)]
command: Commands,
}
#[derive(Subcommand)]
enum Commands {
#[command(name = "git-upload-pack")]
GitUploadPack(GitUploadPack),
#[command(name = "git-receive-pack")]
GitReceivePack(GitUploadPack), // TODO: own args
}
#[derive(Args)]
struct GitUploadPack {
repo_path: String,
}
pub(crate) fn do_login(login: &Login) {
let command = std::env::var("SSH_ORIGINAL_COMMAND").unwrap_or("<no command>".to_owned());
log::info!(
"Performed token login for {} {} with command: {}",
login.keytype,
login.keydata,
command
);
let user_token = get_user_token(login.keytype.to_owned(), login.keydata.to_owned());
let mut command = shlex::split(&command).unwrap();
command.insert(0, "fagit-dummy".to_owned());
let args = Cli::parse_from(command.iter());
match args.command {
Commands::GitUploadPack(upload_pack) => {
let repo_path = canonicalize_repo(&upload_pack.repo_path, &user_token);
if can_read(&repo_path, &user_token) {
let mut child = std::process::Command::new("git-upload-pack")
.args([repo_path.repo_path().as_os_str()])
.spawn()
.unwrap();
child.wait().unwrap();
}
}
Commands::GitReceivePack(upload_pack) => {
let repo_path = canonicalize_repo(&upload_pack.repo_path, &user_token);
if can_write(&repo_path, &user_token) {
let mut child = std::process::Command::new("git-receive-pack")
.args([repo_path.repo_path().as_os_str()])
.spawn()
.unwrap();
child.wait().unwrap();
}
}
}
}
struct UserToken {
keytype: String,
keydata: String,
is_operator: bool,
}
struct RepoId(String);
impl RepoId {
fn is_meta_repo(&self) -> bool {
return self.0.starts_with("meta/") || self.0 == "meta.git";
}
fn repo_path(&self) -> PathBuf {
return Path::join(crate::config::repo_store(), self.0.clone());
}
fn get_config(&self) -> RepoConfig {
let config_process = std::process::Command::new("git")
.args([
"-C",
self.repo_path().to_str().unwrap(),
"show",
"HEAD:.fagit.toml",
])
.output()
.unwrap();
if !config_process.status.success() {
return RepoConfig::default();
}
toml::de::from_str(&String::from_utf8(config_process.stdout).unwrap()).unwrap()
}
}
fn canonicalize_repo(path: &str, user: &UserToken) -> RepoId {
let mut path = path.to_owned();
path.make_ascii_lowercase();
if path.starts_with("/") {
path.remove(0);
}
if path.ends_with("/") {
path.remove(path.len() - 1);
}
if !path.ends_with(".git") {
path += ".git";
}
// TODO: properly check directory traversal or smth here. just a regex should do the trick
return RepoId(path);
}
fn can_write(repo_path: &RepoId, user_token: &UserToken) -> bool {
if repo_path.is_meta_repo() {
return user_token.is_operator;
}
return true;
}
fn can_read(repo_path: &RepoId, user_token: &UserToken) -> bool {
if repo_path.is_meta_repo() {
return user_token.is_operator;
}
return true;
}
fn get_user_token(keytype: String, keydata: String) -> UserToken {
// TODO: settings
let is_operator = "ssh-ed25519" == keytype
&& "AAAAC3NzaC1lZDI1NTE5AAAAINg2WYMRKINwbH5UCqqK2qq/qW0gG1NnaALHqEyU4NzM" == keydata;
return UserToken {
keytype,
keydata,
is_operator,
};
}
|
