mirror of
https://github.com/YGGverse/Yoda.git
synced 2026-04-01 09:05:27 +00:00
470 lines
26 KiB
Rust
470 lines
26 KiB
Rust
use super::{Feature, Page};
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use ggemini::client::connection::response::{
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failure::{Permanent, Temporary},
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Certificate, Failure, Input, Redirect,
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};
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use ggemini::{
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client::{Client, Request, Response},
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gio::{file_output_stream, memory_input_stream},
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};
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use gtk::{
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gdk::Texture,
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gdk_pixbuf::Pixbuf,
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gio::{Cancellable, SocketClientEvent},
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glib::{Priority, Uri},
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prelude::{FileExt, SocketClientExt},
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};
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use sourceview::prelude::InputStreamExtManual;
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use std::{cell::Cell, path::MAIN_SEPARATOR, rc::Rc, time::Duration};
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/// [Gemini protocol](https://geminiprotocol.net/docs/protocol-specification.gmi) client driver
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pub struct Gemini {
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/// Should be initiated once
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client: Rc<Client>,
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/// Validate redirection count by Gemini protocol specification
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redirects: Rc<Cell<usize>>,
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/// Handle target
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page: Rc<Page>,
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}
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impl Gemini {
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// Constructors
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/// Create new `Self`
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pub fn init(page: &Rc<Page>) -> Self {
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// Init supported protocol libraries
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let client = Rc::new(ggemini::Client::new());
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// Listen for [SocketClient](https://docs.gtk.org/gio/class.SocketClient.html) updates
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client.socket.connect_event({
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let page = page.clone();
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move |_, event, _, _| {
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page.set_progress(match event {
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// 0.1 reserved for handle begin
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SocketClientEvent::Resolving => 0.2,
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SocketClientEvent::Resolved => 0.3,
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SocketClientEvent::Connecting => 0.4,
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SocketClientEvent::Connected => 0.5,
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SocketClientEvent::ProxyNegotiating => 0.6,
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SocketClientEvent::ProxyNegotiated => 0.7,
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// * `TlsHandshaking` | `TlsHandshaked` has effect only for guest connections!
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SocketClientEvent::TlsHandshaking => 0.8,
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SocketClientEvent::TlsHandshaked => 0.9,
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SocketClientEvent::Complete => 1.0,
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_ => todo!(), // alert on API change
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})
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}
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});
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Self {
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client,
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redirects: Rc::new(Cell::new(0)),
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page: page.clone(),
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}
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}
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// Actions
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pub fn handle(&self, uri: Uri, feature: Rc<Feature>, cancellable: Cancellable) {
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use ggemini::client::connection::Request;
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match uri.scheme().as_str() {
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"gemini" => handle(
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Request::Gemini { uri },
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self.client.clone(),
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self.page.clone(),
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self.redirects.clone(),
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feature,
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cancellable,
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None,
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),
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"titan" => {
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self.page.input.set_new_titan({
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let client = self.client.clone();
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let page = self.page.clone();
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let redirects = self.redirects.clone();
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move |header, bytes, on_failure| {
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handle(
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Request::Titan {
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uri: uri.clone(),
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data: bytes,
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mime: header.mime.map(|mime| mime.into()),
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token: header.token.map(|token| token.into()),
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},
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client.clone(),
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page.clone(),
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redirects.clone(),
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feature.clone(),
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cancellable.clone(),
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Some(on_failure),
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)
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}
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});
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self.page.set_title("Titan input");
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self.page.set_progress(0.0);
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}
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_ => panic!(), // unexpected
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}
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}
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}
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fn handle(
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request: Request,
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client: Rc<Client>,
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page: Rc<Page>,
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redirects: Rc<Cell<usize>>,
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feature: Rc<Feature>,
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cancellable: Cancellable,
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on_failure: Option<Box<dyn Fn()>>,
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) {
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let uri = request.uri().clone();
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client.request_async(
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request,
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Priority::DEFAULT,
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cancellable.clone(),
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// Search for user certificate match request
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// * @TODO this feature does not support multi-protocol yet
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match page
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.profile
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.identity
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.get(&uri.to_string())
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{
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Some(identity) => match identity.to_tls_certificate() {
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Ok(certificate) => Some(certificate),
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Err(_) => panic!(), // unexpected
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},
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None => None,
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},
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{
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let page = page.clone();
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let redirects = redirects.clone();
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move |result| match result {
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Ok((response, connection)) => match response {
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// https://geminiprotocol.net/docs/protocol-specification.gmi#input-expected
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Response::Input(input) => {
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let title = input.to_string();
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page.set_progress(0.0);
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page.set_title(&title);
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redirects.replace(0); // reset
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match input {
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// https://geminiprotocol.net/docs/protocol-specification.gmi#status-10
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Input::Default { message } => page.input.set_new_response(
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page.item_action.clone(),
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uri,
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Some(message.as_ref().unwrap_or(&title)),
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Some(1024),
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),
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// https://geminiprotocol.net/docs/protocol-specification.gmi#status-11-sensitive-input
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Input::Sensitive { message } => page.input.set_new_sensitive(
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page.item_action.clone(),
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uri,
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Some(message.as_ref().unwrap_or(&title)),
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Some(1024),
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)
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}
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}
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// https://geminiprotocol.net/docs/protocol-specification.gmi#status-20
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Response::Success(success) => match *feature {
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Feature::Download => {
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// Init download widget
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let status = page.content.to_status_download(
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crate::tool::uri_to_title(&uri).trim_matches(MAIN_SEPARATOR), // grab default filename from base URI,
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// format FS entities
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&cancellable,
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{
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let cancellable = cancellable.clone();
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let stream = connection.stream();
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move |file, action| {
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match file.replace(
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None,
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false,
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gtk::gio::FileCreateFlags::NONE,
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Some(&cancellable),
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) {
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Ok(file_output_stream) => {
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use crate::tool::Format;
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// Asynchronously read [IOStream](https://docs.gtk.org/gio/class.IOStream.html)
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// to local [MemoryInputStream](https://docs.gtk.org/gio/class.MemoryInputStream.html)
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// show bytes count in loading widget, validate max size for incoming data
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// * no dependency of Gemini library here, feel free to use any other `IOStream` processor
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file_output_stream::from_stream_async(
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stream.clone(),
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file_output_stream,
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cancellable.clone(),
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Priority::DEFAULT,
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(
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0x100000, // 1M bytes per chunk
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None, // unlimited
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0, // initial totals
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),
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(
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// on chunk
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{
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let action = action.clone();
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move |_, total| action.update.activate(&format!(
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"Received {}...",
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total.bytes()
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))
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},
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// on complete
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{
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let action = action.clone();
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move |result| match result {
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Ok((_, total)) => {
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action.complete.activate(&format!(
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"Saved to {} ({} total)",
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file.parse_name(),
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total.bytes()
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))
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}
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Err(e) => action.cancel.activate(&e.to_string())
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}
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},
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),
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)
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}
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Err(e) => action.cancel.activate(&e.to_string()),
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}
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}
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},
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);
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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},
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_ => match success.mime() {
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"text/gemini" | "text/plain" => memory_input_stream::from_stream_async(
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connection.stream(),
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Priority::DEFAULT,
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cancellable.clone(),
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(
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0x400, // 1024 chunk
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0xfffff, // 1M limit
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),
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(
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|_, _| {}, // on chunk (maybe nothing to count yet @TODO)
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move |result| match result { // on complete
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Ok((memory_input_stream, total)) => memory_input_stream.read_all_async(
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vec![0;total],
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Priority::DEFAULT,
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Some(&cancellable),
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move |result| match result {
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Ok((buffer, _ ,_)) => match std::str::from_utf8(&buffer) {
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Ok(data) => {
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let widget = if matches!(*feature, Feature::Source) {
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page.content.to_text_source(data)
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} else {
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match success.mime() {
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"text/gemini" => page.content.to_text_gemini(&uri, data),
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"text/plain" => page.content.to_text_plain(data),
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_ => panic!() // unexpected
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}
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};
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page.search.set(Some(widget.text_view));
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page.set_title(&match widget.meta.title {
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Some(title) => title.into(), // @TODO
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None => crate::tool::uri_to_title(&uri),
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});
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page.set_progress(0.0);
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page.window_action
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.find
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.simple_action
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.set_enabled(true);
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redirects.replace(0); // reset
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},
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Err(e) => {
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let status = page.content.to_status_failure();
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status.set_description(Some(&e.to_string()));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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},
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},
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Err((_, e)) => {
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let status = page.content.to_status_failure();
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status.set_description(Some(&e.to_string()));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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}
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}
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),
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Err(e) => {
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let status = page.content.to_status_failure();
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status.set_description(Some(&e.to_string()));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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},
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}
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)
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),
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"image/png" | "image/gif" | "image/jpeg" | "image/webp" => {
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// Final image size unknown, show loading widget
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let status = page.content.to_status_loading(
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Some(Duration::from_secs(1)), // show if download time > 1 second
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);
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// Asynchronously read [IOStream](https://docs.gtk.org/gio/class.IOStream.html)
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// to local [MemoryInputStream](https://docs.gtk.org/gio/class.MemoryInputStream.html)
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// show bytes count in loading widget, validate max size for incoming data
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// * no dependency of Gemini library here, feel free to use any other `IOStream` processor
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memory_input_stream::from_stream_async(
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connection.stream(),
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Priority::DEFAULT,
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cancellable.clone(),
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(
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0x400, // 1024 bytes per chunk, optional step for images download tracking
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0xA00000 // 10M bytes max to prevent memory overflow if server play with promises
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),
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(
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move |_, total| status.set_description(Some(&format!("Download: {total} bytes"))),
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{
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//let page = page.clone();
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move | result | match result {
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Ok((memory_input_stream, _)) => {
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Pixbuf::from_stream_async(
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&memory_input_stream,
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Some(&cancellable),
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move |result| {
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match result {
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Ok(buffer) => {
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page.set_title(&crate::tool::uri_to_title(&uri));
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page.content.to_image(&Texture::for_pixbuf(&buffer));
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}
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Err(e) => {
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let status = page.content.to_status_failure();
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status.set_description(Some(e.message()));
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page.set_title(&status.title());
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}
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}
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page.set_progress(0.0);
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redirects.replace(0); // reset
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},
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)
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}
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Err(e) => {
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let status = page.content.to_status_failure();
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status.set_description(Some(&e.to_string()));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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}
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}
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}
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),
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)
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}
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mime => {
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let status = page
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.content
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.to_status_mime(mime, Some((&page.item_action, &uri)));
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status.set_description(Some(&format!("Content type `{mime}` yet not supported")));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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},
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}
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},
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// https://geminiprotocol.net/docs/protocol-specification.gmi#status-30-temporary-redirection
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// https://geminiprotocol.net/docs/protocol-specification.gmi#status-31-permanent-redirection
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Response::Redirect(redirect) => match redirect.to_uri(&uri) {
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Ok(target) => {
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// Increase client redirection counter
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let total = redirects.take() + 1;
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// > Client MUST limit the number of redirections they follow to 5 redirections
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// > https://geminiprotocol.net/docs/protocol-specification.gmi#redirection
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if total > 5 {
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let status = page.content.to_status_failure();
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status.set_description(Some("Redirection limit reached"));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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/* @TODO can't find that in specification, implement manual confirmation status page:
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// Disallow external redirection by protocol restrictions
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} else if "gemini" != target.scheme()
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|| uri.port() != target.port()
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|| uri.host() != target.host() {
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let status = page.content.to_status_failure();
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status.set_description(Some("External redirects not allowed by protocol specification"));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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*/
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// Valid
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} else {
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if matches!(redirect, Redirect::Permanent { .. }) {
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page.navigation.set_request(&target.to_string());
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}
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redirects.replace(total);
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page.item_action.load.activate(Some(&target.to_string()), false);
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}
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}
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Err(e) => {
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let status = page.content.to_status_failure();
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status.set_description(Some(&e.to_string()));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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}
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}
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Response::Certificate(ref certificate) => match certificate {
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// https://geminiprotocol.net/docs/protocol-specification.gmi#status-60
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Certificate::Required { message } |
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// https://geminiprotocol.net/docs/protocol-specification.gmi#status-61-certificate-not-authorized
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Certificate::NotAuthorized { message } |
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// https://geminiprotocol.net/docs/protocol-specification.gmi#status-62-certificate-not-valid
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Certificate::NotValid { message } => {
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let status = page.content.to_status_identity();
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status.set_description(Some(message.as_ref().unwrap_or(&certificate.to_string())));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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}
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}
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Response::Failure(failure) => match failure {
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Failure::Temporary(ref temporary) => match temporary {
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Temporary::CgiError { message } |
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Temporary::Default { message } |
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Temporary::ProxyError { message } |
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Temporary::ServerUnavailable { message } |
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Temporary::SlowDown { message } => {
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let status = page.content.to_status_failure();
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status.set_description(Some(message.as_ref().unwrap_or(&temporary.to_string())));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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if let Some(callback) = on_failure {
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callback()
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}
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}
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}
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Failure::Permanent(ref permanent) => match permanent {
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Permanent::BadRequest { message } |
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Permanent::Default { message } |
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Permanent::Gone { message } |
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Permanent::NotFound { message } |
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Permanent::ProxyRequestRefused { message } => {
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let status = page.content.to_status_failure();
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status.set_description(Some(message.as_ref().unwrap_or(&permanent.to_string())));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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if let Some(callback) = on_failure {
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callback()
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}
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}
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}
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}
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}
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Err(e) => {
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let status = page.content.to_status_failure();
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status.set_description(Some(&e.to_string()));
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page.set_progress(0.0);
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page.set_title(&status.title());
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redirects.replace(0); // reset
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}
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}
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},
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)
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}
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