#![doc = include_str!("../README.md")]
use bzip2::bufread::BzDecoder;
use serde::{Deserialize, Serialize};
use sha1_smol::Sha1;
use std::{
fmt::{self, Display},
fs::{self, File},
io::{self, BufReader, IsTerminal},
path::{Path, PathBuf},
};
#[macro_use]
extern crate thiserror;
#[derive(Debug, Error)]
pub enum Error {
#[error("Unsupported target triplet: {0}")]
UnsupportedTarget(String),
#[error("HTTP request error: {0}")]
Request(#[from] ureq::Error),
#[error("Version not found: {0}")]
VersionNotFound(String),
#[error("Missing Content-Length header")]
MissingContentLength,
#[error("Opaque Content-Length header: {0}")]
OpaqueContentLength(#[from] ureq::http::header::ToStrError),
#[error("Invalid Content-Length header: {0}")]
InvalidContentLength(String),
#[error("File I/O error: {0}")]
Io(#[from] std::io::Error),
#[error("Unexpected file size: downloaded {downloaded} expected {expected}")]
UnexpectedFileSize { downloaded: u64, expected: u64 },
#[error("Bad SHA1 file hash: {0}")]
CorruptedFile(String),
#[error("Invalid archive file path: {0}")]
InvalidArchiveFile(String),
}
pub type Result<T> = std::result::Result<T, Error>;
pub const LINUX_TARGETS: &[&str] = &[
"x86_64-unknown-linux-gnu",
"arm-unknown-linux-gnueabi",
"aarch64-unknown-linux-gnu",
];
pub const MACOS_TARGETS: &[&str] = &["aarch64-apple-darwin", "x86_64-apple-darwin"];
pub const WINDOWS_TARGETS: &[&str] = &[
"x86_64-pc-windows-msvc",
"aarch64-pc-windows-msvc",
"i686-pc-windows-msvc",
];
const URL: &str = "https://cef-builds.spotifycdn.com";
#[derive(Deserialize, Serialize, Default)]
pub struct CefIndex {
pub macosarm64: CefPlatform,
pub macosx64: CefPlatform,
pub windows64: CefPlatform,
pub windowsarm64: CefPlatform,
pub windows32: CefPlatform,
pub linux64: CefPlatform,
pub linuxarm64: CefPlatform,
pub linuxarm: CefPlatform,
}
impl CefIndex {
pub fn download() -> Result<Self> {
Ok(ureq::get(&format!("{URL}/index.json"))
.call()?
.into_body()
.read_json()?)
}
pub fn platform(&self, target: &str) -> Result<&CefPlatform> {
match target {
"aarch64-apple-darwin" => Ok(&self.macosarm64),
"x86_64-apple-darwin" => Ok(&self.macosx64),
"x86_64-pc-windows-msvc" => Ok(&self.windows64),
"aarch64-pc-windows-msvc" => Ok(&self.windowsarm64),
"i686-pc-windows-msvc" => Ok(&self.windows32),
"x86_64-unknown-linux-gnu" => Ok(&self.linux64),
"aarch64-unknown-linux-gnu" => Ok(&self.linuxarm64),
"arm-unknown-linux-gnueabi" => Ok(&self.linuxarm),
v => Err(Error::UnsupportedTarget(v.to_string())),
}
}
}
#[derive(Deserialize, Serialize, Default)]
pub struct CefPlatform {
pub versions: Vec<CefVersion>,
}
impl CefPlatform {
pub fn version(&self, cef_version: &str) -> Result<&CefVersion> {
let version_prefix = format!("{cef_version}+");
self.versions
.iter()
.find(|v| v.cef_version.starts_with(&version_prefix))
.ok_or_else(|| Error::VersionNotFound(cef_version.to_string()))
}
}
#[derive(Deserialize, Serialize)]
pub struct CefVersion {
pub channel: String,
pub cef_version: String,
pub files: Vec<CefFile>,
}
impl CefVersion {
pub fn download_archive<P>(&self, location: P, show_progress: bool) -> Result<PathBuf>
where
P: AsRef<Path>,
{
let file = self.minimal()?;
let (file, sha) = (file.name.as_str(), file.sha1.as_str());
fs::create_dir_all(&location)?;
let download_file = location.as_ref().join(file);
if download_file.exists() {
if calculate_file_sha1(&download_file) == sha {
if show_progress {
println!("Verified archive: {}", download_file.display());
}
return Ok(download_file);
}
if show_progress {
println!("Cleaning corrupted archive: {}", download_file.display());
}
let corrupted_file = location.as_ref().join(format!("corrupted_{file}"));
fs::rename(&download_file, &corrupted_file)?;
fs::remove_file(&corrupted_file)?;
}
let cef_url = format!("{URL}/{file}");
if show_progress {
println!("Using archive url: {cef_url}");
}
let mut file = File::create(&download_file)?;
let resp = ureq::get(&cef_url).call()?;
let expected = resp
.headers()
.get("Content-Length")
.ok_or(Error::MissingContentLength)?;
let expected = expected.to_str()?;
let expected = expected
.parse::<u64>()
.map_err(|_| Error::InvalidContentLength(expected.to_owned()))?;
let downloaded = if show_progress && io::stdout().is_terminal() {
const DOWNLOAD_TEMPLATE: &str = "{msg} {spinner:.green} [{elapsed_precise}] [{wide_bar:.cyan/blue}] {bytes}/{total_bytes} ({eta})";
let bar = indicatif::ProgressBar::new(expected);
bar.set_style(
indicatif::ProgressStyle::with_template(DOWNLOAD_TEMPLATE)
.expect("invalid template")
.progress_chars("##-"),
);
bar.set_message("Downloading");
std::io::copy(
&mut bar.wrap_read(resp.into_body().into_reader()),
&mut file,
)
} else {
let mut reader = resp.into_body().into_reader();
std::io::copy(&mut reader, &mut file)
}?;
if downloaded != expected {
return Err(Error::UnexpectedFileSize {
downloaded,
expected,
});
}
if show_progress {
println!("Verifying SHA1 hash: {sha}...");
}
if calculate_file_sha1(&download_file) != sha {
return Err(Error::CorruptedFile(download_file.display().to_string()));
}
if show_progress {
println!("Downloaded archive: {}", download_file.display());
}
Ok(download_file)
}
pub fn minimal(&self) -> Result<&CefFile> {
self.files
.iter()
.find(|f| f.file_type == "minimal")
.ok_or_else(|| Error::VersionNotFound(self.cef_version.clone()))
}
}
#[derive(Deserialize, Serialize)]
pub struct CefFile {
#[serde(rename = "type")]
pub file_type: String,
pub name: String,
pub sha1: String,
}
pub fn download_target_archive<P>(
target: &str,
cef_version: &str,
location: P,
show_progress: bool,
) -> Result<PathBuf>
where
P: AsRef<Path>,
{
if show_progress {
println!("Downloading CEF archive for {target}...");
}
let index = CefIndex::download()?;
let platform = index.platform(target)?;
let version = platform.version(cef_version)?;
version.download_archive(location, show_progress)
}
pub fn extract_target_archive<P, Q>(
target: &str,
archive: P,
location: Q,
show_progress: bool,
) -> Result<PathBuf>
where
P: AsRef<Path>,
Q: AsRef<Path>,
{
if show_progress {
println!("Extracting archive: {}", archive.as_ref().display());
}
let decoder = BzDecoder::new(BufReader::new(File::open(&archive)?));
tar::Archive::new(decoder).unpack(&location)?;
let extracted_dir = archive.as_ref().display().to_string();
let extracted_dir = extracted_dir
.strip_suffix(".tar.bz2")
.map(PathBuf::from)
.ok_or(Error::InvalidArchiveFile(extracted_dir))?;
let os_and_arch = OsAndArch::try_from(target)?;
let OsAndArch { os, arch } = os_and_arch;
let cef_dir = os_and_arch.to_string();
let cef_dir = location.as_ref().join(cef_dir);
if cef_dir.exists() {
let old_dir = location.as_ref().join(format!("old_{os}_{arch}"));
if show_progress {
println!("Cleaning up: {}", old_dir.display());
}
fs::rename(&cef_dir, &old_dir)?;
fs::remove_dir_all(old_dir)?;
}
const RELEASE_DIR: &str = "Release";
fs::rename(extracted_dir.join(RELEASE_DIR), &cef_dir)?;
if os == "macos" {
fs::rename(
cef_dir.join("cef_sandbox.a"),
cef_dir.join("libcef_sandbox.a"),
)?;
} else {
let resources = extracted_dir.join("Resources");
for entry in fs::read_dir(&resources)? {
let entry = entry?;
fs::rename(entry.path(), cef_dir.join(entry.file_name()))?;
}
}
const CMAKE_LISTS_TXT: &str = "CMakeLists.txt";
fs::rename(
extracted_dir.join(CMAKE_LISTS_TXT),
cef_dir.join(CMAKE_LISTS_TXT),
)?;
const CMAKE_DIR: &str = "cmake";
fs::rename(extracted_dir.join(CMAKE_DIR), cef_dir.join(CMAKE_DIR))?;
const INCLUDE_DIR: &str = "include";
fs::rename(extracted_dir.join(INCLUDE_DIR), cef_dir.join(INCLUDE_DIR))?;
const LIBCEF_DLL_DIR: &str = "libcef_dll";
fs::rename(
extracted_dir.join(LIBCEF_DLL_DIR),
cef_dir.join(LIBCEF_DLL_DIR),
)?;
if show_progress {
println!("Moved contents to: {}", cef_dir.display());
}
let old_dir = extracted_dir
.parent()
.map(|parent| parent.join(format!("extracted_{os}_{arch}")))
.ok_or_else(|| Error::InvalidArchiveFile(extracted_dir.display().to_string()))?;
if show_progress {
println!("Cleaning up: {}", old_dir.display());
}
fs::rename(&extracted_dir, &old_dir)?;
fs::remove_dir_all(old_dir)?;
Ok(cef_dir)
}
fn calculate_file_sha1(path: &Path) -> String {
use std::io::Read;
let mut file = BufReader::new(File::open(path).unwrap());
let mut sha1 = Sha1::new();
let mut buffer = [0; 8192];
loop {
let count = file.read(&mut buffer).unwrap();
if count == 0 {
break;
}
sha1.update(&buffer[..count]);
}
sha1.digest().to_string()
}
pub struct OsAndArch {
pub os: &'static str,
pub arch: &'static str,
}
impl Display for OsAndArch {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let os = self.os;
let arch = self.arch;
write!(f, "cef_{os}_{arch}")
}
}
impl TryFrom<&str> for OsAndArch {
type Error = Error;
fn try_from(target: &str) -> Result<Self> {
match target {
"aarch64-apple-darwin" => Ok(OsAndArch {
os: "macos",
arch: "aarch64",
}),
"x86_64-apple-darwin" => Ok(OsAndArch {
os: "macos",
arch: "x86_64",
}),
"x86_64-pc-windows-msvc" => Ok(OsAndArch {
os: "windows",
arch: "x86_64",
}),
"aarch64-pc-windows-msvc" => Ok(OsAndArch {
os: "windows",
arch: "aarch64",
}),
"i686-pc-windows-msvc" => Ok(OsAndArch {
os: "windows",
arch: "x86",
}),
"x86_64-unknown-linux-gnu" => Ok(OsAndArch {
os: "linux",
arch: "x86_64",
}),
"aarch64-unknown-linux-gnu" => Ok(OsAndArch {
os: "linux",
arch: "aarch64",
}),
"arm-unknown-linux-gnueabi" => Ok(OsAndArch {
os: "linux",
arch: "arm",
}),
v => Err(Error::UnsupportedTarget(v.to_string())),
}
}
}
#[cfg(all(target_os = "linux", target_arch = "x86_64"))]
pub const DEFAULT_TARGET: &str = "x86_64-unknown-linux-gnu";
#[cfg(all(target_os = "linux", target_arch = "aarch64"))]
pub const DEFAULT_TARGET: &str = "aarch64-unknown-linux-gnu";
#[cfg(all(target_os = "linux", target_arch = "arm"))]
pub const DEFAULT_TARGET: &str = "arm-unknown-linux-gnueabi";
#[cfg(all(target_os = "windows", target_arch = "x86_64"))]
pub const DEFAULT_TARGET: &str = "x86_64-pc-windows-msvc";
#[cfg(all(target_os = "windows", target_arch = "x86"))]
pub const DEFAULT_TARGET: &str = "i686-pc-windows-msvc";
#[cfg(all(target_os = "windows", target_arch = "aarch64"))]
pub const DEFAULT_TARGET: &str = "aarch64-pc-windows-msvc";
#[cfg(all(target_os = "macos", target_arch = "x86_64"))]
pub const DEFAULT_TARGET: &str = "x86_64-apple-darwin";
#[cfg(all(target_os = "macos", target_arch = "aarch64"))]
pub const DEFAULT_TARGET: &str = "aarch64-apple-darwin";