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|
pub mod configuration;
use {
crate::{
environment::ENVIRONMENT,
url::{from_path as url_from_path, matches_pattern},
},
actix_web::{Error, HttpResponse},
std::{fmt::Write, time::Instant},
};
const CSS: &str = include_str!("../default.css");
#[allow(clippy::future_not_send, clippy::too_many_lines)]
pub async fn default(
http_request: actix_web::HttpRequest,
) -> Result<HttpResponse, Error> {
if ["/proxy", "/proxy/", "/x", "/x/", "/raw", "/raw/", "/nocss", "/nocss/"]
.contains(&http_request.path())
{
return Ok(HttpResponse::Ok()
.content_type("text/html")
.body(r"<h1>September</h1>
<p>This is a proxy path. Specify a Gemini URL without the protocol (<code>gemini://</code>) to proxy it.</p>
<p>To proxy <code>gemini://fuwn.me/uptime</code>, visit <code>https://fuwn.me/proxy/fuwn.me/uptime</code>.</p>
<p>Additionally, you may visit <code>/raw</code> to view the raw Gemini content, or <code>/nocss</code> to view the content without CSS.</p>
"));
}
let mut configuration = configuration::Configuration::new();
let url = match url_from_path(
&format!("{}{}", http_request.path(), {
if !http_request.query_string().is_empty()
|| http_request.uri().to_string().ends_with('?')
{
format!("?{}", http_request.query_string())
} else {
String::new()
}
}),
false,
&mut configuration,
) {
Ok(url) => url,
Err(e) => {
return Ok(
HttpResponse::BadRequest()
.content_type("text/plain")
.body(format!("{e}")),
);
}
};
let mut timer = Instant::now();
let mut response = match germ::request::request(&url).await {
Ok(response) => response,
Err(e) => {
return Ok(HttpResponse::Ok().body(e.to_string()));
}
};
let mut redirect_response_status = None;
let mut redirect_url = None;
if *response.status() == germ::request::Status::PermanentRedirect
|| *response.status() == germ::request::Status::TemporaryRedirect
{
redirect_response_status = Some(*response.status());
redirect_url = Some(
url::Url::parse(&if response.meta().starts_with('/') {
format!(
"gemini://{}{}",
url.domain().unwrap_or_default(),
response.meta()
)
} else {
response.meta().to_string()
})
.unwrap(),
);
response =
match germ::request::request(&redirect_url.clone().unwrap()).await {
Ok(response) => response,
Err(e) => {
return Ok(HttpResponse::Ok().body(e.to_string()));
}
}
}
let response_time_taken = timer.elapsed();
let meta = germ::meta::Meta::from_string(response.meta().to_string());
let charset = meta
.parameters()
.get("charset")
.map_or_else(|| "utf-8".to_string(), ToString::to_string);
let language =
meta.parameters().get("lang").map_or_else(String::new, ToString::to_string);
timer = Instant::now();
if response.meta().starts_with("image/") {
if let Some(content_bytes) = &response.content_bytes() {
return Ok(
HttpResponse::build(actix_web::http::StatusCode::OK)
.content_type(response.meta().as_ref())
.body(content_bytes.to_vec()),
);
}
}
let mut html_context = if configuration.is_raw() {
String::new()
} else {
format!(
r#"<!DOCTYPE html><html{}><head><meta name="viewport" content="width=device-width, initial-scale=1.0">"#,
if language.is_empty() {
String::new()
} else {
format!(" lang=\"{language}\"")
}
)
};
let gemini_html =
crate::html::from_gemini(&response, &url, &configuration).unwrap();
let gemini_title = gemini_html.0;
let convert_time_taken = timer.elapsed();
if configuration.is_raw() {
html_context.push_str(
&response.content().as_ref().map_or_else(String::default, String::clone),
);
return Ok(
HttpResponse::Ok()
.content_type(format!("{}; charset={charset}", meta.mime()))
.body(html_context),
);
}
if configuration.is_no_css() {
html_context.push_str(&gemini_html.1);
return Ok(
HttpResponse::Ok()
.content_type(format!("text/html; charset={charset}"))
.body(html_context),
);
}
if let Some(css) = &ENVIRONMENT.css_external {
for stylesheet in css.split(',').filter(|s| !s.is_empty()) {
let _ = write!(
&mut html_context,
"<link rel=\"stylesheet\" type=\"text/css\" href=\"{stylesheet}\">",
);
}
} else if !configuration.is_no_css() {
let _ = write!(
&mut html_context,
r#"<link rel="stylesheet" href="https://latex.vercel.app/style.css"><style>{CSS}</style>"#
);
if let Some(primary) = &ENVIRONMENT.primary_colour {
let _ = write!(
&mut html_context,
"<style>:root {{ --primary: {primary} }}</style>"
);
} else {
let _ = write!(
&mut html_context,
"<style>:root {{ --primary: var(--base0D); }}</style>"
);
}
}
if let Some(favicon) = &ENVIRONMENT.favicon_external {
let _ = write!(
&mut html_context,
"<link rel=\"icon\" type=\"image/x-icon\" href=\"{favicon}\">",
);
}
if ENVIRONMENT.mathjax {
html_context.push_str(
r#"<script type="text/javascript" id="MathJax-script" async
src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js">
</script>"#,
);
}
if let Some(head) = &ENVIRONMENT.head {
html_context.push_str(head);
}
let _ = write!(&mut html_context, "<title>{gemini_title}</title>");
let _ = write!(&mut html_context, "</head><body>");
if !http_request.path().starts_with("/proxy") {
if let Some(header) = &ENVIRONMENT.header {
let _ = write!(
&mut html_context,
"<big><blockquote>{header}</blockquote></big>"
);
}
}
match response.status() {
germ::request::Status::Success => {
if let (Some(status), Some(url)) =
(redirect_response_status, redirect_url)
{
let _ = write!(
&mut html_context,
"<blockquote>This page {} redirects to <a \
href=\"{}\">{}</a>.</blockquote>",
if status == germ::request::Status::PermanentRedirect {
"permanently"
} else {
"temporarily"
},
url,
url
);
}
html_context.push_str(&gemini_html.1);
}
_ => {
let _ = write!(&mut html_context, "<p>{}</p>", response.meta());
}
}
let _ = write!(
&mut html_context,
"<details>\n<summary>Proxy Information</summary>
<dl>
<dt>Original URL</dt><dd><a href=\"{}\">{0}</a></dd>
<dt>Status Code</dt><dd>{} ({})</dd>
<dt>Meta</dt><dd><code>{}</code></dd>
<dt>Capsule Response Time</dt><dd>{} milliseconds</dd>
<dt>Gemini-to-HTML Time</dt><dd>{} milliseconds</dd>
</dl>
<p>This content has been proxied by <a \
href=\"https://github.com/gemrest/september{}\">September ({})</a>.</p>
</details></body></html>",
url,
response.status(),
i32::from(*response.status()),
response.meta(),
response_time_taken.as_nanos() as f64 / 1_000_000.0,
convert_time_taken.as_nanos() as f64 / 1_000_000.0,
format_args!("/tree/{}", env!("VERGEN_GIT_SHA")),
env!("VERGEN_GIT_SHA").get(0..5).unwrap_or("UNKNOWN"),
);
if let Some(plain_texts) = &ENVIRONMENT.plain_text_route {
if plain_texts.split(',').any(|r| {
matches_pattern(r, http_request.path())
|| matches_pattern(r, http_request.path().trim_end_matches('/'))
}) {
return Ok(HttpResponse::Ok().body(
response.content().as_ref().map_or_else(String::default, String::clone),
));
}
}
Ok(
HttpResponse::Ok()
.content_type(format!("text/html; charset={charset}"))
.body(html_context),
)
}
|