refactor: remove seldom used procedural macros

4 files changed, 305 insertions, 0 deletions

diff --git a/src/request/response.rs b/src/request/response.rs
new file mode 100644
index 0000000..4c822e1
--- /dev/null
+++ b/src/request/response.rs
@@ -0,0 +1,74 @@
+// This file is part of Germ <https://github.com/gemrest/germ>.
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+// SPDX-License-Identifier: GPL-3.0-only
+
+use std::borrow::Cow;
+
+use rustls::SupportedCipherSuite;
+
+use crate::request::Status;
+
+#[derive(Debug, Clone)]
+pub struct Response {
+  status:  Status,
+  meta:    String,
+  content: Option<String>,
+  size:    usize,
+  suite:   Option<SupportedCipherSuite>,
+}
+
+impl Response {
+  pub(crate) fn new(data: &[u8], suite: Option<SupportedCipherSuite>) -> Self {
+    let string_form = String::from_utf8_lossy(data).to_string();
+    let mut content = None;
+    let header;
+
+    if string_form.ends_with("\r\n") {
+      header = string_form;
+    } else {
+      let mut string_split = string_form.split("\r\n");
+
+      header = string_split.next().unwrap_or("").to_string();
+      content = Some(string_split.map(|s| format!("{s}\r\n")).collect());
+    }
+
+    let header_split = header.split_at(2);
+
+    Self {
+      status: Status::from(header_split.0.parse::<i32>().unwrap_or(0)),
+      meta: header_split.1.trim_start().to_string(),
+      content,
+      size: data.len(),
+      suite,
+    }
+  }
+
+  #[must_use]
+  pub const fn status(&self) -> &Status { &self.status }
+
+  #[must_use]
+  pub fn meta(&self) -> Cow<'_, str> { Cow::Borrowed(&self.meta) }
+
+  #[must_use]
+  pub const fn content(&self) -> &Option<String> { &self.content }
+
+  #[must_use]
+  pub const fn size(&self) -> &usize { &self.size }
+
+  #[must_use]
+  pub const fn suite(&self) -> &Option<SupportedCipherSuite> { &self.suite }
+}
diff --git a/src/request/status.rs b/src/request/status.rs
new file mode 100644
index 0000000..c18f171
--- /dev/null
+++ b/src/request/status.rs
@@ -0,0 +1,112 @@
+// This file is part of Germ <https://github.com/gemrest/germ>.
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+// SPDX-License-Identifier: GPL-3.0-only
+
+use std::{fmt, fmt::Formatter};
+
+/// Simple Gemini status reporting
+///
+/// # Examples
+///
+/// ```rust
+/// use germ::request::Status;
+///
+/// assert_eq!(Status::from(10), Status::Input);
+/// assert_eq!(i32::from(Status::Input), 10);
+/// ```
+#[derive(Debug, PartialEq, Clone, Eq)]
+pub enum Status {
+  Input,
+  SensitiveInput,
+  Success,
+  TemporaryRedirect,
+  PermanentRedirect,
+  TemporaryFailure,
+  ServerUnavailable,
+  CGIError,
+  ProxyError,
+  SlowDown,
+  PermanentFailure,
+  NotFound,
+  Gone,
+  ProxyRefused,
+  BadRequest,
+  ClientCertificateRequired,
+  CertificateNotAuthorised,
+  CertificateNotValid,
+  Unsupported,
+}
+
+impl Default for Status {
+  fn default() -> Self { Self::Success }
+}
+
+impl From<Status> for i32 {
+  fn from(n: Status) -> Self {
+    match n {
+      Status::Input => 10,
+      Status::SensitiveInput => 11,
+      Status::Success => 20,
+      Status::TemporaryRedirect => 30,
+      Status::PermanentRedirect => 31,
+      Status::TemporaryFailure => 40,
+      Status::ServerUnavailable => 41,
+      Status::CGIError => 42,
+      Status::ProxyError => 43,
+      Status::SlowDown => 44,
+      Status::PermanentFailure => 50,
+      Status::NotFound => 51,
+      Status::Gone => 52,
+      Status::ProxyRefused => 53,
+      Status::BadRequest => 59,
+      Status::ClientCertificateRequired => 60,
+      Status::CertificateNotAuthorised => 61,
+      Status::CertificateNotValid => 62,
+      Status::Unsupported => 0,
+    }
+  }
+}
+
+impl From<i32> for Status {
+  fn from(n: i32) -> Self {
+    match n {
+      10 => Self::Input,
+      11 => Self::SensitiveInput,
+      20 => Self::Success,
+      30 => Self::TemporaryRedirect,
+      31 => Self::PermanentRedirect,
+      40 => Self::TemporaryFailure,
+      41 => Self::ServerUnavailable,
+      42 => Self::CGIError,
+      43 => Self::ProxyError,
+      44 => Self::SlowDown,
+      50 => Self::PermanentFailure,
+      51 => Self::NotFound,
+      52 => Self::Gone,
+      53 => Self::ProxyRefused,
+      59 => Self::BadRequest,
+      60 => Self::ClientCertificateRequired,
+      61 => Self::CertificateNotAuthorised,
+      62 => Self::CertificateNotValid,
+      _ => Self::Unsupported,
+    }
+  }
+}
+
+impl fmt::Display for Status {
+  fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result { write!(f, "{self:?}") }
+}
diff --git a/src/request/sync.rs b/src/request/sync.rs
new file mode 100644
index 0000000..68c8a0f
--- /dev/null
+++ b/src/request/sync.rs
@@ -0,0 +1,77 @@
+// This file is part of Germ <https://github.com/gemrest/germ>.
+// Copyright (C) 2022-2023 Fuwn <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+// SPDX-License-Identifier: GPL-3.0-only
+
+use tokio::io::{AsyncReadExt, AsyncWriteExt};
+
+use crate::request::Response;
+
+/// Make a request to a Gemini server
+///
+/// The `url` **should** be prefixed with a scheme (e.g. "gemini://").
+///
+/// # Example
+///
+/// ```rust
+/// match germ::request::request(&url::Url::parse("gemini://fuwn.me").unwrap())
+///   .await
+/// {
+///   Ok(response) => println!("{:?}", response),
+///   Err(_) => {}
+/// }
+/// ```
+///
+/// # Errors
+///
+/// - May error if the URL is invalid
+/// - May error if the server is unreachable
+/// - May error if the TLS write fails
+/// - May error if the TLS read fails
+pub async fn request(url: &url::Url) -> anyhow::Result<Response> {
+  let mut tls = tokio_rustls::TlsConnector::from(std::sync::Arc::new(
+    rustls::ClientConfig::builder()
+      .with_safe_defaults()
+      .with_custom_certificate_verifier(std::sync::Arc::new(
+        crate::request::GermVerifier::new(),
+      ))
+      .with_no_client_auth(),
+  ))
+  .connect(
+    rustls::ServerName::try_from(url.domain().unwrap_or_default())?,
+    tokio::net::TcpStream::connect(format!(
+      "{}:{}",
+      url.domain().unwrap_or(""),
+      url.port().unwrap_or(1965)
+    ))
+    .await?,
+  )
+  .await?;
+  let cipher_suite = tls.get_mut().1.negotiated_cipher_suite();
+
+  tls.write_all(format!("{url}\r\n").as_bytes()).await?;
+
+  Ok(Response::new(
+    &{
+      let mut plain_text = Vec::new();
+
+      tls.read_to_end(&mut plain_text).await?;
+
+      plain_text
+    },
+    cipher_suite,
+  ))
+}
diff --git a/src/request/verifier.rs b/src/request/verifier.rs
new file mode 100644
index 0000000..b0120bd
--- /dev/null
+++ b/src/request/verifier.rs
@@ -0,0 +1,42 @@
+// This file is part of Germ <https://github.com/gemrest/germ>.
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+// SPDX-License-Identifier: GPL-3.0-only
+
+use std::time::SystemTime;
+
+use rustls::{client, client::ServerCertVerified, Certificate};
+
+#[allow(clippy::module_name_repetitions)]
+pub struct GermVerifier;
+
+impl GermVerifier {
+  pub const fn new() -> Self { Self {} }
+}
+
+impl client::ServerCertVerifier for GermVerifier {
+  fn verify_server_cert(
+    &self,
+    _end_entity: &Certificate,
+    _intermediates: &[Certificate],
+    _server_name: &client::ServerName,
+    _scts: &mut dyn Iterator<Item = &[u8]>,
+    _ocsp_response: &[u8],
+    _now: SystemTime,
+  ) -> Result<ServerCertVerified, rustls::Error> {
+    Ok(ServerCertVerified::assertion())
+  }
+}