Update deps

fix typescript errors, add tsconfig.json

.gitignore

@@ -1,3 +1,8 @@
-/target
+**/target
 **/database
-/web/dist/
+**/dist/
+**/node_modules
+test.*
+dist.tar.zst
+.env
+web/pkg

.gitmodules

@@ -0,0 +1,9 @@
+[submodule "web/vendor/MPLUS_FONTS"]
+	path = web/vendor/MPLUS_FONTS
+	url = git@github.com:coz-m/MPLUS_FONTS.git
+[submodule "web/vendor/highlight.js"]
+	path = web/vendor/highlight.js
+	url = git@github.com:highlightjs/highlight.js.git
+[submodule "web/vendor/highlightjs-line-numbers.js"]
+	path = web/vendor/highlightjs-line-numbers.js
+	url = git@github.com:wcoder/highlightjs-line-numbers.js.git

.shellcheckrc

@@ -0,0 +1 @@
+external-sources=true

.swcrc

@@ -0,0 +1,9 @@
+{
+  "jsc": {
+    "parser": {
+      "syntax": "typescript",
+      "tsx": true
+    },
+    "target": "es2021"
+  }
+}

Cargo.toml

@@ -4,4 +4,8 @@ members = [
   "common",
   "server",
   "web",
-]
+]
+
+[profile.release]
+lto = true
+codegen-units = 1

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+
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+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
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+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
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+    (at your option) any later version.
+
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+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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+<https://www.gnu.org/licenses/>.
+
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+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -0,0 +1,116 @@
+# OmegaUpload
+
+OmegaUpload is a zero-knowledge temporary file hosting service.
+
+## Examples
+
+```bash
+# Uploading a file:
+$ omegaupload upload https://paste.example.com path/to/file
+https://paste.example.com/PgRG8Hfrr9rR#I1FG2oejo2gSjB3Ym1mEmRfcN4X8GXc2pZtZeiSsWFo=
+
+# Uploading a file with a password:
+$ omegaupload upload -p https://paste.example.com path/to/file
+Please set the password for this paste:
+https://paste.example.com/862vhXVp3v9R#key:tbGxzHBNnXjS2eq89X9uvZKz_i8bvapLPEp8g0waQrc=!pw
+
+# Downloading a file:
+$ omegaupload download https://paste.example.com/PgRG8Hfrr9rR#I1FG2oejo2gSjB3Ym1mEmRfcN4X8GXc2pZtZeiSsWFo=
+```
+
+## Features
+
+- Server has zero knowledge of uploaded data when uploading through a supported
+  frontend (Direct, plaintext upload is possible but unsupported).
+- Only metadata stored on server is expiration time. This is a strong guarantee.
+- All cryptographic functions are performed on the client side and are done via
+  a single common library, to minimize risk of programming error.
+- Modern crypto functions are used with recommended parameters:
+  XChaCha20Poly1305 for encryption and Argon2id for KDF.
+- Customizable expiration times, from burn-after-read to 1 day.
+
+## Building from source
+
+Prerequisites:
+- `yarn` 1.22.17 or later (Earlier versions untested but likely to work)
+- Cargo, with support for the latest Rust version
+- _(Optional)_ zstd, for zipping up the file for distribution
+
+First, run `git submodule update --init --recursive`.
+
+Then, run `./bin/build.sh` for a `dist.tar.zst` to be generated, where you can
+simply extract that folder and run the binary provided. The server will listen
+on port `8080`.
+
+### Running a local server
+
+After running `./bin/build.sh`, you can cd into the `dist` and run
+`./omegaupload-server`. It will run on port 8000, and will respond to HTTP
+requests.
+
+You can then point an omegaupload CLI instance (or run
+`cargo run --bin omegaupload`) as an upload server.
+
+If you're only changing the frontend (and not updating the server code), you can
+run `yarn build` for faster iteration.
+
+## Why OmegaUpload?
+
+OmegaUpload's primary benefit is that the frontends use a unified common library
+utilizing XChaCha20Poly1305 to encrypt and decrypt files.
+
+### Security
+
+The primary goal was to provide a unified library across both a CLI tool and
+through the web frontend to minimize risk of compromise. As a result, the CLI
+tool and the web frontend both utilize a Rust library whose crypto module
+exposes two functions to encrypt and decrypt that only accept a message and
+necessarily key material or return only necessary key material. This small API
+effectively makes it impossible to have differences between the frontend, and
+ensures that the attack surface is limited to these functions.
+
+#### Password KDF
+
+If a password is provided at encryption time, argon2 is used as a key derivation
+function. Specifically, the library meets or exceeds OWASP recommended
+parameters:
+ - Argon2id is used.
+ - Algorithm version is `0x13`.
+ - Parameters are `m = 15MiB`, `t = 2`, `p = 2`.
+
+ Additionally, a salt size of 16 bytes are used.
+
+#### Blob Encryption
+
+XChaCha20Poly1305 was used as the encryption method as it is becoming the
+mainstream recommended method for encrypting messages. This was chosen over AES
+primarily due to its strength in related-key attacks, as well as its widespread
+recognition and usage in WireGuard, Quic, and TLS.
+
+As this crate uses `XChaCha20`, a 24 byte nonce and a 32 bytes key are used.
+
+#### Secrecy
+
+Encryption and decryption functions offered by the common crate only accept or
+return key material that will be properly zeroed on destruction. This is
+enforced by the `secrecy` crate, which, on top of offering type wrappers that
+zero the memory on drop, provide an easy way to audit when secrets are exposed.
+
+This also means that to use these two functions necessarily requires the caller
+to enclose key material in the wrapped type first, reducing possibility for key
+material to remain in memory.
+
+#### Memory Safety
+
+Rust eliminates an entire class of memory-related bugs, and any `unsafe` block
+is documented with a safety comment. This allows for easy auditing of memory
+suspect code, and permits
+
+## Why not OmegaUpload?
+
+There are a few reasons to not use OmegaUpload:
+ - Limited to 3GB uploads—this is a soft limit of RocksDB.
+ - Cannot download files larger than 512 MiB through the web frontend—this
+   is a technical limitation of the current web frontend not using a web worker
+   in addition to the fact that browsers are not optimized for XChaCha20.
+ - The frontend uses WASM, which is a novel attack surface.

bin/build.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+# OmegaUpload Build Script
+# Copyright (C) 2021  Edward Shen
+#
+# 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, either version 3 of the License, or
+# (at your option) any later version.
+#
+# 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 <https://www.gnu.org/licenses/>.
+
+set -euxo pipefail
+
+cd "$(git rev-parse --show-toplevel)" || exit 1
+
+# Clean resources
+rm -rf dist
+
+# Build frontend code
+yarn
+yarn build
+mv dist/static/index.html dist
+
+# Build server
+cargo build --release --bin omegaupload-server
+strip target/release/omegaupload-server
+cp target/release/omegaupload-server dist/omegaupload-server
+
+tar -cvf dist.tar dist
+rm -rf dist.tar.zst
+zstd -T0 --ultra --rm -22 dist.tar

bin/update_web_deps.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+
+# OmegaUpload Update Web Dependencies Script
+# Copyright (C) 2021  Edward Shen
+#
+# 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, either version 3 of the License, or
+# (at your option) any later version.
+#
+# 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 <https://www.gnu.org/licenses/>.
+
+set -euxo pipefail
+
+CUR_DIR=$(pwd)
+PROJECT_TOP_LEVEL=$(git rev-parse --show-toplevel)
+
+cd "$PROJECT_TOP_LEVEL" || exit 1
+git submodule update --remote
+
+cd "$CUR_DIR"

bin/upload_test_files.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+# OmegaUpload Upload Test Script
+# Copyright (C) 2021  Edward Shen
+#
+# 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, either version 3 of the License, or
+# (at your option) any later version.
+#
+# 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 <https://www.gnu.org/licenses/>.
+
+source .env
+
+cd "$(git rev-parse --show-toplevel)" || exit 1
+
+cargo build --release --bin omegaupload
+
+TEST_PATH="test/*"
+
+PADDING=0
+
+for file in $TEST_PATH; do
+  if [ $PADDING -lt ${#file} ]; then
+    PADDING=${#file}
+  fi
+done
+
+for file in $TEST_PATH; do
+  printf "%$((PADDING - ${#TEST_PATH} + 1))s: " "${file#$TEST_PATH}"
+  ./target/release/omegaupload upload "$PASTE_URL" "$file"
+done

cli/Cargo.toml

@@ -1,15 +1,19 @@
 [package]
-name = "omegaupload-cli"
-version = "0.1.0"
-edition = "2018"
+name = "omegaupload"
+version = "0.1.1"
+edition = "2021"
+description = "OmegaUpload CLI tool"
+repository = "https://git.eddie.sh/edward/omegaupload"
+license = "GPL-3.0-or-later"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
 omegaupload-common = { path = "../common" }
-
-anyhow = "1"
-atty = "0.2"
-clap = "3.0.0-beta.4"
-reqwest = { version = "0.11", default-features = false, features = ["rustls-tls", "blocking"] }
-secrecy = { version = "0.8", features = ["serde"] }
+anyhow = "1.0.58"
+atty = "0.2.14"
+bytes = "1"
+clap = { version = "3.2.15", features = ["derive"] }
+indicatif = "0.17"
+reqwest = { version = "0.11.11", default-features = false, features = ["rustls-tls", "blocking"] }
+rpassword = "7.0.0"

cli/LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+software and other kinds of works.
+
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cli/src/main.rs

@@ -1,31 +1,74 @@
 #![warn(clippy::nursery, clippy::pedantic)]
 #![deny(unsafe_code)]
 
-use std::io::{Read, Write};
+// OmegaUpload CLI Client
+// Copyright (C) 2021  Edward Shen
+//
+// 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, either version 3 of the License, or
+// (at your option) any later version.
+//
+// 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 <https://www.gnu.org/licenses/>.
+
+use std::io::{Cursor, Read, Write};
+use std::path::PathBuf;
 
 use anyhow::{anyhow, bail, Context, Result};
 use atty::Stream;
-use clap::Clap;
-use omegaupload_common::crypto::{gen_key_nonce, open, seal, Key};
-use omegaupload_common::{base64, hash, ParsedUrl, Url};
-use reqwest::blocking::Client;
+use bytes::Bytes;
+use clap::Parser;
+use indicatif::{ProgressBar, ProgressStyle};
+use omegaupload_common::crypto::{open_in_place, seal_in_place};
+use omegaupload_common::fragment::Builder;
+use omegaupload_common::secrecy::{ExposeSecret, SecretString, SecretVec};
+use omegaupload_common::{
+    base64, Expiration, ParsedUrl, Url, API_ENDPOINT, EXPIRATION_HEADER_NAME,
+};
+use reqwest::blocking::{Body, Client};
+use reqwest::header::EXPIRES;
 use reqwest::StatusCode;
-use secrecy::{ExposeSecret, SecretString};
+use rpassword::prompt_password;
 
-#[derive(Clap)]
+#[derive(Parser)]
 struct Opts {
     #[clap(subcommand)]
     action: Action,
 }
 
-#[derive(Clap)]
+#[derive(Parser)]
 enum Action {
+    /// Upload a paste to an omegaupload server.
     Upload {
+        /// The OmegaUpload instance to upload data to.
         url: Url,
+        /// Encrypt the uploaded paste with the provided password, preventing
+        /// public access.
         #[clap(short, long)]
-        password: Option<SecretString>,
+        password: bool,
+        /// How long for the paste to last, or until someone has read it.
+        #[clap(short, long, possible_values = Expiration::variants())]
+        duration: Option<Expiration>,
+        /// The path to the file to upload. If none is provided, then reads
+        /// stdin instead.
+        path: Option<PathBuf>,
+        /// Hint that the uploaded file should be syntax highlighted with a
+        /// specific language.
+        #[clap(short, long)]
+        language: Option<String>,
+        /// Don't provide a file name hint.
+        #[clap(short = 'F', long)]
+        no_file_name_hint: bool,
     },
+    /// Download a paste from an omegaupload server.
     Download {
+        /// The paste to download.
         url: ParsedUrl,
     },
 }
@@ -34,47 +77,87 @@ fn main() -> Result<()> {
     let opts = Opts::parse();
 
     match opts.action {
-        Action::Upload { url, password } => handle_upload(url, password),
+        Action::Upload {
+            url,
+            password,
+            duration,
+            path,
+            language,
+            no_file_name_hint,
+        } => handle_upload(url, password, duration, path, language, no_file_name_hint),
         Action::Download { url } => handle_download(url),
     }?;
 
     Ok(())
 }
 
-fn handle_upload(mut url: Url, password: Option<SecretString>) -> Result<()> {
+fn handle_upload(
+    mut url: Url,
+    password: bool,
+    duration: Option<Expiration>,
+    path: Option<PathBuf>,
+    language: Option<String>,
+    no_file_name_hint: bool,
+) -> Result<()> {
     url.set_fragment(None);
 
-    if atty::is(Stream::Stdin) {
-        bail!("This tool requires non interactive CLI. Pipe something in!");
+    if password && path.is_none() {
+        bail!("Reading data from stdin is incompatible with a password. Provide a path to a file to upload.");
     }
 
-    let (data, nonce, key, pw_used) = {
-        let (enc_key, nonce) = gen_key_nonce();
-        let mut container = Vec::new();
-        std::io::stdin().read_to_end(&mut container)?;
-        let mut enc =
-            seal(&container, &nonce, &enc_key).map_err(|_| anyhow!("Failed to encrypt data"))?;
-
-        let pw_used = if let Some(password) = password {
-            let pw_hash = hash(password.expose_secret().as_bytes());
-            let pw_key = Key::from_slice(pw_hash.as_ref());
-            enc = seal(&enc, &nonce.increment(), pw_key)
-                .map_err(|_| anyhow!("Failed to encrypt data"))?;
-            true
+    let (data, key) = {
+        let mut container = if let Some(ref path) = path {
+            std::fs::read(path)?
         } else {
-            false
+            let mut container = vec![];
+            std::io::stdin().lock().read_to_end(&mut container)?;
+            container
         };
 
-        let key = base64::encode(&enc_key);
-        let nonce = base64::encode(&nonce);
+        if container.is_empty() {
+            bail!("Nothing to upload.");
+        }
 
-        (enc, nonce, key, pw_used)
+        let password = if password {
+            let maybe_password = prompt_password("Please set the password for this paste: ")?;
+            Some(SecretVec::new(maybe_password.into_bytes()))
+        } else {
+            None
+        };
+
+        let enc_key = seal_in_place(&mut container, password)?;
+        let key = SecretString::new(base64::encode(&enc_key.expose_secret().as_ref()));
+        (container, key)
     };
 
-    let res = Client::new()
-        .post(url.as_ref())
-        .body(data)
-        .send()
+    let mut req = Client::new().post(url.as_ref());
+
+    if let Some(duration) = duration {
+        req = req.header(&*EXPIRATION_HEADER_NAME, duration);
+    }
+
+    let data_size = data.len() as u64;
+    let progress_style = ProgressStyle::with_template(
+        "[{elapsed_precise}] {bar:40} {bytes}/{total_bytes} {eta_precise}",
+    )
+    .unwrap();
+    let progress_bar = ProgressBar::new(data_size).with_style(progress_style);
+    let res = req
+        .body(Body::sized(
+            WrappedBody::new(
+                move |amt| {
+                    progress_bar.inc(amt as u64);
+                },
+                data,
+            ),
+            data_size,
+        ))
+        .build()
+        .expect("Failed to build body");
+    let res = reqwest::blocking::ClientBuilder::new()
+        .timeout(None)
+        .build()?
+        .execute(res)
         .context("Request to server failed")?;
 
     if res.status() != StatusCode::OK {
@@ -85,20 +168,59 @@ fn handle_upload(mut url: Url, password: Option<SecretString>) -> Result<()> {
         .map_err(|_| anyhow!("Failed to get base URL"))?
         .extend(std::iter::once(res.text()?));
 
-    let mut fragment = format!("key:{}!nonce:{}", key, nonce);
-
-    if pw_used {
-        fragment.push_str("!pw");
+    let mut fragment = Builder::new(key);
+    if password {
+        fragment = fragment.needs_password();
     }
 
-    url.set_fragment(Some(&fragment));
+    if !no_file_name_hint {
+        let file_name = path.and_then(|path| {
+            path.file_name()
+                .map(|str| str.to_string_lossy().to_string())
+        });
+        if let Some(file_name) = file_name {
+            fragment = fragment.file_name(file_name);
+        }
+    }
 
-    println!("{}", url);
+    if let Some(language) = language {
+        fragment = fragment.language(language);
+    }
+
+    url.set_fragment(Some(fragment.build().expose_secret()));
+
+    println!("{url}");
 
     Ok(())
 }
 
-fn handle_download(url: ParsedUrl) -> Result<()> {
+struct WrappedBody<Callback> {
+    callback: Callback,
+    inner: Cursor<Bytes>,
+}
+
+impl<Callback> WrappedBody<Callback> {
+    fn new(callback: Callback, data: Vec<u8>) -> Self {
+        Self {
+            callback,
+            inner: Cursor::new(Bytes::from(data)),
+        }
+    }
+}
+
+impl<Callback: FnMut(usize)> Read for WrappedBody<Callback> {
+    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
+        let res = self.inner.read(buf);
+        if let Ok(size) = res {
+            (self.callback)(size);
+        }
+        res
+    }
+}
+
+fn handle_download(mut url: ParsedUrl) -> Result<()> {
+    url.sanitized_url
+        .set_path(&format!("{API_ENDPOINT}{}", url.sanitized_url.path()));
     let res = Client::new()
         .get(url.sanitized_url)
         .send()
@@ -108,27 +230,27 @@ fn handle_download(url: ParsedUrl) -> Result<()> {
         bail!("Got bad response from server: {}", res.status());
     }
 
+    let expiration_text = res
+        .headers()
+        .get(EXPIRES)
+        .and_then(|v| Expiration::try_from(v).ok())
+        .as_ref()
+        .map_or_else(
+            || "This paste will not expire.".to_string(),
+            ToString::to_string,
+        );
+
     let mut data = res.bytes()?.as_ref().to_vec();
 
-    if url.needs_password {
+    let password = if url.needs_password {
         // Only print prompt on interactive, else it messes with output
-        if atty::is(Stream::Stdout) {
-            print!("Please enter the password to access this document: ");
-            std::io::stdout().flush()?;
-        }
-        let mut input = String::new();
-        std::io::stdin().read_line(&mut input)?;
-        input.pop(); // last character is \n, we need to drop it.
+        let maybe_password = prompt_password("Please enter the password to access this paste: ")?;
+        Some(SecretVec::new(maybe_password.into_bytes()))
+    } else {
+        None
+    };
 
-        let pw_hash = hash(input.as_bytes());
-        let pw_key = Key::from_slice(pw_hash.as_ref());
-
-        data = open(&data, &url.nonce.increment(), pw_key)
-            .map_err(|_| anyhow!("Failed to decrypt data. Incorrect password?"))?;
-    }
-
-    data = open(&data, &url.nonce, &url.decryption_key)
-        .map_err(|_| anyhow!("Failed to decrypt data. Incorrect decryption key?"))?;
+    open_in_place(&mut data, &url.decryption_key, password)?;
 
     if atty::is(Stream::Stdout) {
         if let Ok(data) = String::from_utf8(data) {
@@ -140,5 +262,7 @@ fn handle_download(url: ParsedUrl) -> Result<()> {
         std::io::stdout().write_all(&data)?;
     }
 
+    eprintln!("{expiration_text}");
+
     Ok(())
 }

common/Cargo.toml

@@ -1,15 +1,32 @@
 [package]
 name = "omegaupload-common"
-version = "0.1.0"
-edition = "2018"
+version = "0.2.0"
+edition = "2021"
+description = "Common library for OmegaUpload"
+repository = "https://git.eddie.sh/edward/omegaupload"
+license = "MIT"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-anyhow = "1"
-base64 = "0.13"
-chacha20poly1305 = "0.9"
-rand = "0.8"
-sha2 = "0.9"
-thiserror = "1"
-url = "2"
+base64 = "0.21.0"
+bytes = { version = "1.2.0", features = ["serde"] }
+chacha20poly1305 = { version = "0.10", features = ["stream", "std"] }
+chrono = { version = "0.4.19", features = ["serde"] }
+headers = "0.3.7"
+lazy_static = "1.4.0"
+rand = "0.8.5"
+secrecy = "0.8.0"
+serde = { version = "1.0.140", features = ["derive"] }
+thiserror = "1.0.31"
+typenum = "1.15.0"
+url = "2.2.2"
+argon2 = "0.5"
+
+# Wasm features
+gloo-console = { version = "0.3", optional = true }
+reqwasm = { version = "0.5.0", optional = true }
+http = { version = "0.2.8", optional = true }
+
+[features]
+wasm = ["gloo-console", "reqwasm", "http"]

common/LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2021 Edward Shen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

common/src/base64.rs

@@ -0,0 +1,42 @@
+// Copyright (c) 2021 Edward Shen
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+use base64::alphabet::URL_SAFE;
+use base64::engine::general_purpose::GeneralPurpose;
+use base64::engine::general_purpose::GeneralPurposeConfig;
+use base64::DecodeError;
+use base64::Engine;
+
+const URL_BASE64: GeneralPurpose = GeneralPurpose::new(&URL_SAFE, GeneralPurposeConfig::new());
+
+/// URL-safe Base64 encoding.
+pub fn encode(input: impl AsRef<[u8]>) -> String {
+    URL_BASE64.encode(input)
+}
+
+/// URL-safe Base64 decoding.
+///
+/// # Errors
+///
+/// Returns an error if a buffer cannot be decoded, such as if there's an
+/// incorrect number of bytes.
+pub fn decode(input: impl AsRef<[u8]>) -> Result<Vec<u8>, DecodeError> {
+    URL_BASE64.decode(input)
+}

common/src/crypto.rs

@@ -0,0 +1,334 @@
+// Copyright (c) 2021 Edward Shen
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+use std::ops::{Deref, DerefMut};
+
+use argon2::{Argon2, ParamsBuilder};
+use chacha20poly1305::aead::generic_array::sequence::GenericSequence;
+use chacha20poly1305::aead::generic_array::GenericArray;
+use chacha20poly1305::aead::{AeadInPlace};
+use chacha20poly1305::XChaCha20Poly1305;
+use chacha20poly1305::XNonce;
+use rand::{CryptoRng, Rng};
+use secrecy::{DebugSecret, ExposeSecret, Secret, SecretVec, Zeroize};
+use typenum::Unsigned;
+use chacha20poly1305::KeyInit;
+
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+    #[error("Invalid password.")]
+    Password,
+    #[error("Invalid secret key.")]
+    SecretKey,
+    #[error("An error occurred while trying to decrypt the blob.")]
+    Encryption,
+    #[error("An error occurred while trying to derive a secret key.")]
+    Kdf,
+}
+
+// This struct intentionally prevents implement Clone or Copy
+#[derive(Default, PartialEq, Eq)]
+pub struct Key(chacha20poly1305::Key);
+
+impl Key {
+    /// Encloses a secret key in a secret `Key` struct.
+    pub fn new_secret(vec: Vec<u8>) -> Option<Secret<Self>> {
+        chacha20poly1305::Key::from_exact_iter(vec.into_iter())
+            .map(Self)
+            .map(Secret::new)
+    }
+}
+
+impl DebugSecret for Key {}
+
+impl AsRef<chacha20poly1305::Key> for Key {
+    fn as_ref(&self) -> &chacha20poly1305::Key {
+        &self.0
+    }
+}
+
+impl Deref for Key {
+    type Target = chacha20poly1305::Key;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for Key {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl Zeroize for Key {
+    fn zeroize(&mut self) {
+        self.0.zeroize();
+    }
+}
+
+/// Seals the provided message with an optional password, returning the secret
+/// key used to encrypt the message and mutating the buffer to contain necessary
+/// metadata.
+///
+/// The resulting sealed message has the nonce used to encrypt the message
+/// appended to it as well as a salt string used to derive the key. In other
+/// words, the modified buffer is one of the following to possibilities,
+/// depending if there was a password provided:
+///
+/// ```text
+/// modified = C(message, rng_key, nonce) || nonce
+/// ```
+/// or
+/// ```text
+/// modified = C(C(message, rng_key, nonce), kdf(pw, salt), nonce + 1) || nonce || salt
+/// ```
+///
+/// Where:
+///  - `C(message, key, nonce)` represents encrypting a provided message with
+///     `XChaCha20Poly1305`.
+///  - `rng_key` represents a randomly generated key.
+///  - `kdf(pw, salt)` represents a key derived from Argon2.
+///  - `nonce` represents a randomly generated nonce.
+///
+/// Note that the lengths for the nonce, key, and salt follow recommended
+/// values. As of writing this doc (2021-10-31), the nonce size is 24 bytes, the
+/// salt size is 16 bytes, and the key size is 32 bytes.
+///
+/// # Errors
+///
+/// This message will return an error if and only if there was a problem
+/// encrypting the message or deriving a secret key from the password, if one
+/// was provided.
+pub fn seal_in_place(
+    message: &mut Vec<u8>,
+    pw: Option<SecretVec<u8>>,
+) -> Result<Secret<Key>, Error> {
+    let (key, nonce) = gen_key_nonce();
+    let cipher = XChaCha20Poly1305::new(key.expose_secret());
+    cipher
+        .encrypt_in_place(&nonce, &[], message)
+        .map_err(|_| Error::Encryption)?;
+
+    let mut maybe_salt_string = None;
+    if let Some(password) = pw {
+        let (key, salt_string) = kdf(&password).map_err(|_| Error::Kdf)?;
+        maybe_salt_string = Some(salt_string);
+        let cipher = XChaCha20Poly1305::new(key.expose_secret());
+        cipher
+            .encrypt_in_place(&nonce.increment(), &[], message)
+            .map_err(|_| Error::Encryption)?;
+    }
+
+    message.extend_from_slice(nonce.as_slice());
+    if let Some(maybe_salted_string) = maybe_salt_string {
+        message.extend_from_slice(maybe_salted_string.as_ref());
+    }
+    Ok(key)
+}
+
+/// Opens a message that has been sealed with `seal_in_place`.
+///
+/// # Errors
+///
+/// Returns an error if there was a decryption failure or if there was a problem
+/// deriving a secret key from the password.
+pub fn open_in_place(
+    data: &mut Vec<u8>,
+    key: &Secret<Key>,
+    password: Option<SecretVec<u8>>,
+) -> Result<(), Error> {
+    let pw_key = if let Some(password) = password {
+        let salt_buf = data.split_off(data.len() - Salt::SIZE);
+        let argon = get_argon2();
+        let mut pw_key = Key::default();
+        argon
+            .hash_password_into(password.expose_secret(), &salt_buf, &mut pw_key)
+            .map_err(|_| Error::Kdf)?;
+        Some(Secret::new(pw_key))
+    } else {
+        None
+    };
+
+    let nonce = Nonce::from_slice(&data.split_off(data.len() - Nonce::SIZE));
+
+    // At this point we should have a buffer that's only the ciphertext.
+
+    if let Some(key) = pw_key {
+        let cipher = XChaCha20Poly1305::new(key.expose_secret());
+        cipher
+            .decrypt_in_place(&nonce.increment(), &[], data)
+            .map_err(|_| Error::Password)?;
+    }
+
+    let cipher = XChaCha20Poly1305::new(key.expose_secret());
+    cipher
+        .decrypt_in_place(&nonce, &[], data)
+        .map_err(|_| Error::SecretKey)?;
+
+    Ok(())
+}
+
+#[must_use]
+fn gen_key_nonce() -> (Secret<Key>, Nonce) {
+    let mut rng = get_csrng();
+    let mut key = GenericArray::default();
+    rng.fill(key.as_mut_slice());
+    let mut nonce = Nonce::default();
+    rng.fill(nonce.as_mut_slice());
+    (Secret::new(Key(key)), nonce)
+}
+
+// Type alias; to ensure that we're consistent on what the inner impl is.
+type NonceImpl = XNonce;
+
+#[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
+struct Nonce(NonceImpl);
+
+impl Deref for Nonce {
+    type Target = NonceImpl;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for Nonce {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl AsRef<[u8]> for Nonce {
+    fn as_ref(&self) -> &[u8] {
+        self.0.as_ref()
+    }
+}
+
+impl Nonce {
+    const SIZE: usize = <NonceImpl as GenericSequence<_>>::Length::USIZE;
+
+    #[must_use]
+    pub fn increment(&self) -> Self {
+        let mut inner = self.0;
+        inner.as_mut_slice()[0] += 1;
+        Self(inner)
+    }
+
+    #[must_use]
+    pub fn from_slice(slice: &[u8]) -> Self {
+        Self(*NonceImpl::from_slice(slice))
+    }
+}
+
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+struct Salt([u8; Self::SIZE]);
+
+impl Salt {
+    const SIZE: usize = argon2::password_hash::Salt::RECOMMENDED_LENGTH;
+
+    fn random() -> Self {
+        let mut salt = [0_u8; Self::SIZE];
+        get_csrng().fill(&mut salt);
+        Self(salt)
+    }
+}
+
+impl AsRef<[u8]> for Salt {
+    fn as_ref(&self) -> &[u8] {
+        self.0.as_ref()
+    }
+}
+
+/// Hashes an input to output a usable key.
+fn kdf(password: &SecretVec<u8>) -> Result<(Secret<Key>, Salt), argon2::Error> {
+    let salt = Salt::random();
+    let hasher = get_argon2();
+    let mut key = Key::default();
+    hasher.hash_password_into(password.expose_secret().as_ref(), salt.as_ref(), &mut key)?;
+
+    Ok((Secret::new(key), salt))
+}
+
+/// Returns Argon2id configured as follows:
+///  - 15MiB of memory (`m`),
+///  - an iteration count of 2 (`t`),
+///  - and 2 degrees of parallelism (`p`).
+///
+/// This follows the [minimum recommended parameters suggested by OWASP][rec].
+///
+/// [rec]: https://link.eddie.sh/vaQ6a.
+fn get_argon2() -> Argon2<'static> {
+    let mut params = ParamsBuilder::new();
+    params
+        .m_cost(15 * 1024) // 15 MiB
+        .t_cost(2)
+        .p_cost(2);
+    let params = params.build().expect("Hard coded params to work");
+    Argon2::new(argon2::Algorithm::Argon2id, argon2::Version::V0x13, params)
+}
+
+/// Fetches a cryptographically secure random number generator. This indirection
+/// is used for better auditing the quality of rng. Notably, this function
+/// returns a `Rng` with the `CryptoRng` marker trait, preventing
+/// non-cryptographically secure RNGs from being used.
+#[must_use]
+pub fn get_csrng() -> impl CryptoRng + Rng {
+    rand::thread_rng()
+}
+
+#[cfg(test)]
+mod test {
+    use super::open_in_place;
+    use super::seal_in_place;
+    use crate::crypto::SecretVec;
+
+    macro_rules! test_encryption {
+        ($($name:ident, $content:expr, $password:expr),*) => {
+            $(
+                #[test]
+                fn $name() {
+                    let mut m = $content;
+                    let n: Vec<u8> = $content;
+                    let key = seal_in_place(&mut m, $password).unwrap();
+                    assert_ne!(m, n);
+                    assert!(open_in_place(&mut m, &key, $password).is_ok());
+                    assert_eq!(m, n);
+                }
+            )*
+        };
+    }
+
+    test_encryption!(empty, vec![], None);
+    test_encryption!(
+        empty_password,
+        vec![],
+        Some(SecretVec::from(b"password".to_vec()))
+    );
+    test_encryption!(
+        normal,
+        vec![0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
+        None
+    );
+    test_encryption!(
+        normal_password,
+        vec![0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
+        Some(SecretVec::from(b"password".to_vec()))
+    );
+}

common/src/fragment.rs

@@ -0,0 +1,66 @@
+use crate::secrecy::{ExposeSecret, SecretString};
+
+pub struct Builder {
+    decryption_key: SecretString,
+    needs_password: bool,
+    file_name: Option<String>,
+    language: Option<String>,
+}
+
+impl Builder {
+    #[must_use]
+    pub fn new(decryption_key: SecretString) -> Self {
+        Self {
+            decryption_key,
+            needs_password: false,
+            file_name: None,
+            language: None,
+        }
+    }
+
+    #[must_use]
+    pub const fn needs_password(mut self) -> Self {
+        self.needs_password = true;
+        self
+    }
+
+    // False positive
+    #[allow(clippy::missing_const_for_fn)]
+    #[must_use]
+    pub fn file_name(mut self, name: String) -> Self {
+        self.file_name = Some(name);
+        self
+    }
+
+    // False positive
+    #[allow(clippy::missing_const_for_fn)]
+    #[must_use]
+    pub fn language(mut self, language: String) -> Self {
+        self.language = Some(language);
+        self
+    }
+
+    #[must_use]
+    pub fn build(self) -> SecretString {
+        if !self.needs_password && self.file_name.is_none() && self.language.is_none() {
+            return self.decryption_key;
+        }
+        let mut args = String::new();
+        if self.needs_password {
+            args.push_str("!pw");
+        }
+        if let Some(file_name) = self.file_name {
+            args.push_str("!name:");
+            args.push_str(&file_name);
+        }
+        if let Some(language) = self.language {
+            args.push_str("!lang:");
+            args.push_str(&language);
+        }
+        SecretString::new(format!(
+            "key:{}{}",
+            self.decryption_key.expose_secret(),
+            args
+        ))
+    }
+}

common/src/lib.rs

@@ -1,125 +1,105 @@
 #![warn(clippy::nursery, clippy::pedantic)]
-#![deny(unsafe_code)]
+// False positive: https://github.com/rust-lang/rust-clippy/issues/6902
+#![allow(clippy::use_self)]
 
 //! Contains common functions and structures used by multiple projects
 
+// Copyright (c) 2021 Edward Shen
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+use std::fmt::Display;
 use std::str::FromStr;
 
-use sha2::{Digest, Sha256};
+use bytes::Bytes;
+use chrono::{DateTime, Duration, Utc};
+use headers::{Header, HeaderName, HeaderValue};
+use lazy_static::lazy_static;
+pub use secrecy;
+use secrecy::Secret;
+use serde::{Deserialize, Serialize};
 use thiserror::Error;
 pub use url::Url;
 
-use crate::crypto::{Key, Nonce};
+use crate::crypto::Key;
 
-pub mod base64 {
-    /// URL-safe Base64 encoding.
-    pub fn encode(input: impl AsRef<[u8]>) -> String {
-        base64::encode_config(input, base64::URL_SAFE)
-    }
+pub mod base64;
+pub mod crypto;
+pub mod fragment;
 
-    /// URL-safe Base64 decoding.
-    pub fn decode(input: impl AsRef<[u8]>) -> Result<Vec<u8>, base64::DecodeError> {
-        base64::decode_config(input, base64::URL_SAFE)
-    }
-}
-
-/// Hashes an input to output a usable key.
-pub fn hash(data: impl AsRef<[u8]>) -> crypto::Key {
-    let mut hasher = Sha256::new();
-    hasher.update(data);
-    hasher.finalize()
-}
-
-pub mod crypto {
-    use std::ops::{Deref, DerefMut};
-
-    use chacha20poly1305::aead::generic_array::GenericArray;
-    use chacha20poly1305::aead::{Aead, Error, NewAead};
-    use chacha20poly1305::XChaCha20Poly1305;
-    use chacha20poly1305::XNonce;
-    use rand::{thread_rng, Rng};
-
-    pub use chacha20poly1305::Key;
-
-    /// Securely generates a random key and nonce.
-    #[must_use]
-    pub fn gen_key_nonce() -> (Key, Nonce) {
-        let mut rng = thread_rng();
-        let mut key: Key = GenericArray::default();
-        rng.fill(key.as_mut_slice());
-        let mut nonce = Nonce::default();
-        rng.fill(nonce.as_mut_slice());
-        (key, nonce)
-    }
-
-    pub fn seal(plaintext: &[u8], nonce: &Nonce, key: &Key) -> Result<Vec<u8>, Error> {
-        let cipher = XChaCha20Poly1305::new(key);
-        cipher.encrypt(nonce, plaintext)
-    }
-
-    pub fn open(encrypted: &[u8], nonce: &Nonce, key: &Key) -> Result<Vec<u8>, Error> {
-        let cipher = XChaCha20Poly1305::new(key);
-        cipher.decrypt(nonce, encrypted)
-    }
-
-    #[derive(Clone, Copy, PartialEq, Eq, Debug)]
-    pub struct Nonce(XNonce);
-
-    impl Default for Nonce {
-        fn default() -> Self {
-            Self(GenericArray::default())
-        }
-    }
-
-    impl Deref for Nonce {
-        type Target = XNonce;
-
-        fn deref(&self) -> &Self::Target {
-            &self.0
-        }
-    }
-
-    impl DerefMut for Nonce {
-        fn deref_mut(&mut self) -> &mut Self::Target {
-            &mut self.0
-        }
-    }
-
-    impl AsRef<[u8]> for Nonce {
-        fn as_ref(&self) -> &[u8] {
-            self.0.as_ref()
-        }
-    }
-
-    impl Nonce {
-        #[must_use]
-        pub fn increment(&self) -> Self {
-            todo!()
-        }
-
-        #[must_use]
-        pub fn from_slice(slice: &[u8]) -> Self {
-            Self(*XNonce::from_slice(slice))
-        }
-    }
-}
+pub const API_ENDPOINT: &str = "/api";
 
 pub struct ParsedUrl {
     pub sanitized_url: Url,
-    pub decryption_key: Key,
-    pub nonce: Nonce,
+    pub decryption_key: Secret<Key>,
     pub needs_password: bool,
 }
 
-#[derive(Default)]
+#[derive(Default, Debug)]
 pub struct PartialParsedUrl {
-    pub decryption_key: Option<Key>,
-    pub nonce: Option<Nonce>,
+    pub decryption_key: Option<Secret<Key>>,
     pub needs_password: bool,
+    pub name: Option<String>,
+    pub language: Option<String>,
 }
 
-impl From<&str> for PartialParsedUrl {
-    fn from(fragment: &str) -> Self {
+#[cfg(test)]
+impl PartialEq for PartialParsedUrl {
+    fn eq(&self, other: &Self) -> bool {
+        use secrecy::ExposeSecret;
+        let decryption_key_matches = {
+            match (self.decryption_key.as_ref(), other.decryption_key.as_ref()) {
+                (Some(key), Some(other)) => key.expose_secret() == other.expose_secret(),
+                (None, None) => true,
+                _ => false,
+            }
+        };
+
+        decryption_key_matches && self.needs_password == other.needs_password
+    }
+}
+
+#[derive(Error, Debug, PartialEq, Eq, PartialOrd, Ord)]
+pub enum PartialParsedUrlParseError {
+    #[error("A decryption key that was not valid web base64 was provided.")]
+    InvalidDecryptionKey,
+}
+
+impl TryFrom<&str> for PartialParsedUrl {
+    type Error = PartialParsedUrlParseError;
+
+    fn try_from(fragment: &str) -> Result<Self, Self::Error> {
+        // Short circuit if the fragment only contains the key.
+
+        // Base64 has an interesting property that the length of an encoded text
+        // is always 4/3rds larger than the original data.
+        if !fragment.contains("key:") {
+            let decryption_key = base64::decode(fragment)
+                .map_err(|_| PartialParsedUrlParseError::InvalidDecryptionKey)?;
+            let decryption_key = Key::new_secret(decryption_key);
+
+            return Ok(Self {
+                decryption_key,
+                ..Self::default()
+            });
+        }
+
         let args = fragment.split('!').filter_map(|kv| {
             let (k, v) = {
                 let mut iter = kv.split(':');
@@ -131,30 +111,39 @@ impl From<&str> for PartialParsedUrl {
 
         let mut decryption_key = None;
         let mut needs_password = false;
-        let mut nonce = None;
+        let mut name = None;
+        let mut language = None;
 
         for (key, value) in args {
             match (key, value) {
                 ("key", Some(value)) => {
-                    decryption_key = base64::decode(value)
-                        .map(|k| Key::from_slice(&k).clone())
-                        .ok();
+                    let key = base64::decode(value)
+                        .map_err(|_| PartialParsedUrlParseError::InvalidDecryptionKey)?;
+                    decryption_key = Key::new_secret(key);
                 }
                 ("pw", _) => {
                     needs_password = true;
                 }
-                ("nonce", Some(value)) => {
-                    nonce = base64::decode(value).as_deref().map(Nonce::from_slice).ok();
-                }
+                ("name", Some(provided_name)) => name = Some(provided_name.to_owned()),
+                ("lang", Some(provided_lang)) => language = Some(provided_lang.to_owned()),
                 _ => (),
             }
         }
 
-        Self {
+        Ok(Self {
             decryption_key,
-            nonce,
             needs_password,
-        }
+            name,
+            language,
+        })
+    }
+}
+
+impl FromStr for PartialParsedUrl {
+    type Err = PartialParsedUrlParseError;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        Self::try_from(s)
     }
 }
 
@@ -164,10 +153,8 @@ pub enum ParseUrlError {
     BadUrl,
     #[error("Missing decryption key")]
     NeedKey,
-    #[error("Missing nonce")]
-    NeedNonce,
-    #[error("Missing decryption key and nonce")]
-    NeedKeyAndNonce,
+    #[error(transparent)]
+    InvalidKey(#[from] PartialParsedUrlParseError),
 }
 
 impl FromStr for ParsedUrl {
@@ -175,31 +162,303 @@ impl FromStr for ParsedUrl {
 
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         let mut url = Url::from_str(s).map_err(|_| ParseUrlError::BadUrl)?;
-        let fragment = url.fragment().ok_or(ParseUrlError::NeedKeyAndNonce)?;
+        let fragment = url.fragment().ok_or(ParseUrlError::NeedKey)?;
         if fragment.is_empty() {
-            return Err(ParseUrlError::NeedKeyAndNonce);
+            return Err(ParseUrlError::NeedKey);
         }
 
         let PartialParsedUrl {
-            decryption_key,
+            mut decryption_key,
             needs_password,
-            nonce,
-        } = PartialParsedUrl::from(fragment);
+            ..
+        } = PartialParsedUrl::try_from(fragment)?;
 
         url.set_fragment(None);
 
-        let (decryption_key, nonce) = match (&decryption_key, nonce) {
-            (None, None) => Err(ParseUrlError::NeedKeyAndNonce),
-            (None, Some(_)) => Err(ParseUrlError::NeedKey),
-            (Some(_), None) => Err(ParseUrlError::NeedNonce),
-            (Some(k), Some(v)) => Ok((*k, v)),
-        }?;
+        let decryption_key = decryption_key.take().ok_or(ParseUrlError::NeedKey)?;
 
         Ok(Self {
             sanitized_url: url,
             decryption_key,
             needs_password,
-            nonce,
         })
     }
 }
+
+#[derive(Serialize, Deserialize, Clone, Copy, Debug)]
+pub enum Expiration {
+    BurnAfterReading,
+    BurnAfterReadingWithDeadline(DateTime<Utc>),
+    UnixTime(DateTime<Utc>),
+}
+
+// This impl is used for the CLI. We use a macro here to ensure that possible
+// expressed by the CLI are the same supported by the server.
+macro_rules! expiration_from_str {
+    {
+        $($str_repr:literal => $duration:expr),* $(,)?
+    } => {
+        impl FromStr for Expiration {
+            type Err = String;
+
+            fn from_str(s: &str) -> Result<Self, Self::Err> {
+                match s {
+                    $($str_repr => Ok($duration),)*
+                    _ => Err(s.to_owned()),
+                }
+            }
+        }
+
+        impl Expiration {
+            #[must_use]
+            pub const fn variants() -> &'static [&'static str] {
+                &[
+                    $($str_repr,)*
+                ]
+            }
+        }
+    };
+}
+
+expiration_from_str! {
+    "read" => Self::BurnAfterReading,
+    "5m" => Self::UnixTime(Utc::now() + Duration::minutes(5)),
+    "10m" => Self::UnixTime(Utc::now() + Duration::minutes(10)),
+    "1h" => Self::UnixTime(Utc::now() + Duration::hours(1)),
+    "1d" => Self::UnixTime(Utc::now() + Duration::days(1)),
+    "3d" => Self::UnixTime(Utc::now() + Duration::days(1)),
+    "1w" => Self::UnixTime(Utc::now() + Duration::weeks(1)),
+}
+
+impl Display for Expiration {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::BurnAfterReading | Self::BurnAfterReadingWithDeadline(_) => {
+                write!(f, "This item has been burned. You now have the only copy.")
+            }
+            Self::UnixTime(time) => write!(
+                f,
+                "{}",
+                time.format("This item will expire on %A, %B %-d, %Y at %T %Z.")
+            ),
+        }
+    }
+}
+
+lazy_static! {
+    pub static ref EXPIRATION_HEADER_NAME: HeaderName = HeaderName::from_static("burn-after");
+}
+
+impl Header for Expiration {
+    fn name() -> &'static HeaderName {
+        &EXPIRATION_HEADER_NAME
+    }
+
+    fn decode<'i, I>(values: &mut I) -> Result<Self, headers::Error>
+    where
+        Self: Sized,
+        I: Iterator<Item = &'i HeaderValue>,
+    {
+        let bytes = values.next().ok_or_else(headers::Error::invalid)?;
+
+        Self::try_from(bytes).map_err(|_| headers::Error::invalid())
+    }
+
+    fn encode<E: Extend<HeaderValue>>(&self, container: &mut E) {
+        container.extend(std::iter::once(self.into()));
+    }
+}
+
+impl From<&Expiration> for HeaderValue {
+    fn from(expiration: &Expiration) -> Self {
+        // SAFETY: All possible values of `Expiration` are valid header values,
+        // so we don't need the extra check.
+        unsafe {
+            Self::from_maybe_shared_unchecked(match expiration {
+                Expiration::BurnAfterReadingWithDeadline(_) | Expiration::BurnAfterReading => {
+                    Bytes::from_static(b"0")
+                }
+                Expiration::UnixTime(duration) => Bytes::from(duration.to_rfc3339()),
+            })
+        }
+    }
+}
+
+impl From<Expiration> for HeaderValue {
+    // False positive: https://github.com/rust-lang/rust-clippy/issues/9095
+    #[allow(clippy::needless_borrow)]
+    fn from(expiration: Expiration) -> Self {
+        (&expiration).into()
+    }
+}
+
+pub struct ParseHeaderValueError;
+
+// #[cfg(feature = "wasm")]
+// impl TryFrom<reqwest::header::HeaderMap<&str>> for Expiration {
+//     type Error = ParseHeaderValueError;
+
+//     fn try_from(headers: reqwest::header::HeaderMap) -> Result<Self, Self::Error> {
+//         headers
+//             .get(http::header::EXPIRES.as_str())
+//             .as_deref()
+//             .and_then(|v| Self::try_from(v).ok())
+//             .ok_or(ParseHeaderValueError)
+//     }
+// }
+
+impl TryFrom<HeaderValue> for Expiration {
+    type Error = ParseHeaderValueError;
+
+    fn try_from(value: HeaderValue) -> Result<Self, Self::Error> {
+        Self::try_from(&value)
+    }
+}
+
+impl TryFrom<&HeaderValue> for Expiration {
+    type Error = ParseHeaderValueError;
+
+    fn try_from(value: &HeaderValue) -> Result<Self, Self::Error> {
+        std::str::from_utf8(value.as_bytes())
+            .map_err(|_| ParseHeaderValueError)
+            .and_then(Self::try_from)
+    }
+}
+
+impl TryFrom<&str> for Expiration {
+    type Error = ParseHeaderValueError;
+
+    fn try_from(value: &str) -> Result<Self, Self::Error> {
+        if value == "0" {
+            return Ok(Self::BurnAfterReading);
+        }
+
+        value
+            .parse::<DateTime<Utc>>()
+            .map_err(|_| ParseHeaderValueError)
+            .map(Self::UnixTime)
+    }
+}
+
+impl Default for Expiration {
+    fn default() -> Self {
+        Self::UnixTime(Utc::now() + Duration::days(1))
+    }
+}
+
+#[cfg(test)]
+mod partial_parsed_url_parsing {
+    use secrecy::Secret;
+
+    use crate::base64;
+    use crate::crypto::Key;
+    use crate::PartialParsedUrl;
+
+    #[test]
+    fn empty() {
+        assert_eq!("".parse(), Ok(PartialParsedUrl::default()));
+    }
+
+    const DECRYPTION_KEY_STRING: &str = "ddLod7sGy_EjFDjWqZoH4i5n_XU8bIpEuEo3-pjfAIE=";
+
+    fn decryption_key() -> Option<Secret<Key>> {
+        Key::new_secret(base64::decode(DECRYPTION_KEY_STRING).unwrap())
+    }
+
+    #[test]
+    fn clean_no_password() {
+        assert_eq!(
+            DECRYPTION_KEY_STRING.parse(),
+            Ok(PartialParsedUrl {
+                decryption_key: decryption_key(),
+                ..Default::default()
+            })
+        );
+    }
+
+    #[test]
+    fn no_password() {
+        let input = "key:ddLod7sGy_EjFDjWqZoH4i5n_XU8bIpEuEo3-pjfAIE=";
+        assert_eq!(
+            input.parse(),
+            Ok(PartialParsedUrl {
+                decryption_key: decryption_key(),
+                ..Default::default()
+            })
+        );
+    }
+
+    #[test]
+    fn with_password() {
+        let input = "key:ddLod7sGy_EjFDjWqZoH4i5n_XU8bIpEuEo3-pjfAIE=!pw";
+        assert_eq!(
+            input.parse(),
+            Ok(PartialParsedUrl {
+                decryption_key: decryption_key(),
+                needs_password: true,
+                ..Default::default()
+            })
+        );
+    }
+
+    #[test]
+    fn with_name() {
+        let input = "key:ddLod7sGy_EjFDjWqZoH4i5n_XU8bIpEuEo3-pjfAIE=!name:test_file.rs";
+        assert_eq!(
+            input.parse(),
+            Ok(PartialParsedUrl {
+                decryption_key: decryption_key(),
+                name: Some("test_file.rs".to_owned()),
+                ..Default::default()
+            })
+        );
+    }
+
+    #[test]
+    fn with_lang() {
+        let input = "key:ddLod7sGy_EjFDjWqZoH4i5n_XU8bIpEuEo3-pjfAIE=!lang:rust";
+        assert_eq!(
+            input.parse(),
+            Ok(PartialParsedUrl {
+                decryption_key: decryption_key(),
+                language: Some("rust".to_owned()),
+                ..Default::default()
+            })
+        );
+    }
+
+    #[test]
+    fn order_does_not_matter() {
+        let input = "pw!key:ddLod7sGy_EjFDjWqZoH4i5n_XU8bIpEuEo3-pjfAIE=";
+        assert_eq!(
+            input.parse(),
+            Ok(PartialParsedUrl {
+                decryption_key: decryption_key(),
+                needs_password: true,
+                ..Default::default()
+            })
+        );
+    }
+
+    #[test]
+    fn empty_key_pair_gracefully_fails() {
+        let input = "!!!key:ddLod7sGy_EjFDjWqZoH4i5n_XU8bIpEuEo3-pjfAIE=!!!";
+        assert_eq!(
+            input.parse(),
+            Ok(PartialParsedUrl {
+                decryption_key: decryption_key(),
+                ..Default::default()
+            })
+        );
+    }
+
+    #[test]
+    fn invalid_decryption_key_fails() {
+        assert!("invalid key".parse::<PartialParsedUrl>().is_err());
+    }
+
+    #[test]
+    fn unknown_fields_fail() {
+        assert!("!!a!!b!!c".parse::<PartialParsedUrl>().is_err());
+    }
+}

package.json

@@ -0,0 +1,27 @@
+{
+  "devDependencies": {
+    "@swc/cli": "^0.1.51",
+    "@swc/core": "^1.2.102",
+    "@types/react-dom": "^17.0.11",
+    "@wasm-tool/wasm-pack-plugin": "^1.6.0",
+    "css-loader": "^6.5.1",
+    "html-webpack-plugin": "^5.5.0",
+    "sass": "^1.48.0",
+    "sass-loader": "^12.4.0",
+    "style-loader": "^3.3.1",
+    "swc-loader": "^0.1.15",
+    "webpack": "^5.66.0",
+    "webpack-cli": "^4.9.1"
+  },
+  "dependencies": {
+    "highlight.js": "^11.4.0",
+    "highlightjs-line-numbers.js": "^2.8.0",
+    "react": "^17.0.2",
+    "react-dom": "^17.0.2",
+    "source-map-loader": "^4.0.0"
+  },
+  "scripts": {
+    "build": "webpack --mode production",
+    "clean": "(git rev-parse --show-toplevel && rm -rf node_modules dist web/pkg)"
+  }
+}

server/Cargo.toml

@@ -1,24 +1,30 @@
 [package]
 name = "omegaupload-server"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-anyhow = "1"
-axum = { version = "0.2", features = ["http2", "headers"] }
-bincode = "1"
+omegaupload-common = { path = "../common" }
+anyhow = "1.0.58"
+axum = { version = "0.6", features = ["http2", "headers"] }
+bincode = "1.3.3"
 # We don't care about which version (We want to match with axum), we just need
 # to enable the feature
-bytes = { version = "*", features = ["serde"] }
-chrono = { version = "0.4", features = ["serde"] }
+bytes = { version = "1.2.0", features = ["serde"] }
+chrono = { version = "0.4.19", features = ["serde"] }
+futures = "0.3.21"
 # We just need to pull in whatever axum is pulling in
-headers = "*"
-lazy_static = "1"
-rand = "0.8"
-rocksdb = { version = "0.17", default_features = false, features = ["zstd"] }
-serde = { version = "1", features = ["derive"] }
-tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
-tracing = { version = "0.1" }
-tracing-subscriber = "0.2"
+headers = "0.3.7"
+lazy_static = "1.4.0"
+# Disable `random()` and `thread_rng()`
+rand = { version = "0.8.5", default-features = false }
+rocksdb = { version = "0.21", default-features = false, features = ["zstd"] }
+serde = { version = "1.0.140", features = ["derive"] }
+signal-hook = "0.3.14"
+signal-hook-tokio = { version = "0.3.1", features = ["futures-v0_3"] }
+tokio = { version = "1.20.1", features = ["macros", "rt-multi-thread"] }
+tower-http = { version = "0.4", features = ["fs"] }
+tracing = "0.1.35"
+tracing-subscriber = "0.3.15"

server/LICENSE

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+  An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals.  This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU Affero General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
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+<https://www.gnu.org/licenses/>.

server/README.md

@@ -0,0 +1,3 @@
+This server responds to four paths:
+
+`GET /`

server/src/main.rs

@@ -1,64 +1,193 @@
 #![warn(clippy::nursery, clippy::pedantic)]
 
-use std::sync::atomic::{AtomicBool, Ordering};
+// OmegaUpload Zero Knowledge File Hosting
+// Copyright (C) 2021  Edward Shen
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// 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 Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use std::convert::Infallible;
 use std::sync::Arc;
+use std::time::Duration;
 
 use anyhow::Result;
 use axum::body::Bytes;
+use axum::error_handling::HandleError;
 use axum::extract::{Extension, Path, TypedHeader};
-use axum::handler::{get, post};
 use axum::http::header::EXPIRES;
 use axum::http::StatusCode;
-use axum::{AddExtensionLayer, Router};
-use chrono::Duration;
+use axum::routing::{get, get_service, post};
+use axum::Router;
+use chrono::Utc;
+use futures::stream::StreamExt;
 use headers::HeaderMap;
-use rand::thread_rng;
+use lazy_static::lazy_static;
+use omegaupload_common::crypto::get_csrng;
+use omegaupload_common::{Expiration, API_ENDPOINT};
 use rand::Rng;
-use rocksdb::IteratorMode;
-use rocksdb::WriteBatch;
+use rocksdb::{ColumnFamilyDescriptor, IteratorMode};
 use rocksdb::{Options, DB};
-use tokio::task;
-use tracing::warn;
-use tracing::{error, instrument};
+use signal_hook::consts::SIGUSR1;
+use signal_hook_tokio::Signals;
+use tokio::task::{self, JoinHandle};
+use tower_http::services::{ServeDir, ServeFile};
+use tracing::{error, instrument, trace};
+use tracing::{info, warn};
 
-use crate::paste::{Expiration, Paste};
 use crate::short_code::ShortCode;
 
-mod paste;
 mod short_code;
 
+const BLOB_CF_NAME: &str = "blob";
+const META_CF_NAME: &str = "meta";
+
+lazy_static! {
+    static ref MAX_PASTE_AGE: chrono::Duration = chrono::Duration::days(1);
+}
+
 #[tokio::main]
 async fn main() -> Result<()> {
-    const DB_PATH: &str = "database";
+    const PASTE_DB_PATH: &str = "database";
     const SHORT_CODE_SIZE: usize = 12;
 
     tracing_subscriber::fmt::init();
 
-    let db = Arc::new(DB::open_default(DB_PATH)?);
+    let mut db_options = Options::default();
+    db_options.create_if_missing(true);
+    db_options.create_missing_column_families(true);
+    db_options.set_compression_type(rocksdb::DBCompressionType::Zstd);
+    let db = Arc::new(DB::open_cf_descriptors(
+        &db_options,
+        PASTE_DB_PATH,
+        [
+            ColumnFamilyDescriptor::new(BLOB_CF_NAME, Options::default()),
+            ColumnFamilyDescriptor::new(META_CF_NAME, Options::default()),
+        ],
+    )?);
 
-    let stop_signal = Arc::new(AtomicBool::new(false));
-    task::spawn(cleanup(Arc::clone(&stop_signal), Arc::clone(&db)));
+    set_up_expirations::<SHORT_CODE_SIZE>(&db);
 
-    axum::Server::bind(&"0.0.0.0:8081".parse()?)
-        .serve(
+    let signals = Signals::new(&[SIGUSR1])?;
+    let signals_handle = signals.handle();
+    let signals_task = tokio::spawn(handle_signals(signals, Arc::clone(&db)));
+
+    let root_service = HandleError::new(get_service(ServeDir::new("static")), |_| async {
+        Ok::<_, Infallible>(StatusCode::NOT_FOUND)
+    });
+
+    let index_service = HandleError::new(get_service(ServeFile::new("index.html")), |_| async {
+        Ok::<_, Infallible>(StatusCode::NOT_FOUND)
+    });
+
+    axum::Server::bind(&"0.0.0.0:8080".parse()?)
+        .serve({
+            info!("Now serving on 0.0.0.0:8080");
             Router::new()
-                .route("/", post(upload::<SHORT_CODE_SIZE>))
                 .route(
-                    "/:code",
+                    "/",
+                    post(upload::<SHORT_CODE_SIZE>).get_service(index_service.clone()),
+                )
+                .route_service("/:code", index_service)
+                .nest_service("/static", root_service)
+                .route(
+                    &format!("{API_ENDPOINT}/:code"),
                     get(paste::<SHORT_CODE_SIZE>).delete(delete::<SHORT_CODE_SIZE>),
                 )
-                .layer(AddExtensionLayer::new(db))
-                .into_make_service(),
-        )
+                .layer(axum::Extension(db))
+                .into_make_service()
+        })
         .await?;
 
-    stop_signal.store(true, Ordering::Release);
     // Must be called for correct shutdown
-    DB::destroy(&Options::default(), DB_PATH)?;
+    DB::destroy(&Options::default(), PASTE_DB_PATH)?;
+
+    signals_handle.close();
+    signals_task.await?;
     Ok(())
 }
 
-#[instrument(skip(db), err)]
+// See https://link.eddie.sh/5JHlD
+#[allow(clippy::cognitive_complexity)]
+fn set_up_expirations<const N: usize>(db: &Arc<DB>) {
+    let mut corrupted = 0;
+    let mut expired = 0;
+    let mut pending = 0;
+
+    info!("Setting up cleanup timers, please wait...");
+
+    let meta_cf = db.cf_handle(META_CF_NAME).unwrap();
+
+    let db_ref = Arc::clone(db);
+
+    for item in db.iterator_cf(meta_cf, IteratorMode::Start) {
+        let (key, value) = item.unwrap();
+        let key: [u8; N] = (*key).try_into().unwrap();
+
+        let expiration = if let Ok(value) = bincode::deserialize::<Expiration>(&value) {
+            value
+        } else {
+            corrupted += 1;
+            delete_entry(Arc::clone(&db_ref), key);
+            continue;
+        };
+
+        let expiration_time = match expiration {
+            Expiration::BurnAfterReading => {
+                warn!("Found unbounded burn after reading. Defaulting to max age");
+                Utc::now() + *MAX_PASTE_AGE
+            }
+            Expiration::BurnAfterReadingWithDeadline(deadline) => deadline,
+            Expiration::UnixTime(time) => time,
+        };
+
+        let sleep_duration = (expiration_time - Utc::now()).to_std().unwrap_or_default();
+        if sleep_duration == Duration::default() {
+            expired += 1;
+            delete_entry(Arc::clone(&db_ref), key);
+        } else {
+            pending += 1;
+            let db = Arc::clone(&db_ref);
+            task::spawn(async move {
+                tokio::time::sleep(sleep_duration).await;
+                delete_entry(db, key);
+            });
+        }
+    }
+
+    if corrupted == 0 {
+        info!("No corrupted pastes found.");
+    } else {
+        warn!("Found {corrupted} corrupted pastes.");
+    }
+
+    info!("Found {expired} expired pastes.");
+    info!("Found {pending} active pastes.");
+    info!("Cleanup timers have been initialized.");
+}
+
+async fn handle_signals(mut signals: Signals, db: Arc<DB>) {
+    while let Some(signal) = signals.next().await {
+        if signal == SIGUSR1 {
+            let meta_cf = db.cf_handle(META_CF_NAME).unwrap();
+            info!(
+                "Active paste count: {}",
+                db.iterator_cf(meta_cf, IteratorMode::Start).count()
+            );
+        }
+    }
+}
+
+#[instrument(skip(db, body), err)]
 async fn upload<const N: usize>(
     Extension(db): Extension<Arc<DB>>,
     maybe_expires: Option<TypedHeader<Expiration>>,
@@ -68,44 +197,85 @@ async fn upload<const N: usize>(
         return Err(StatusCode::BAD_REQUEST);
     }
 
+    if let Some(header) = maybe_expires {
+        if let Expiration::UnixTime(time) = header.0 {
+            if (time - Utc::now()) > *MAX_PASTE_AGE {
+                warn!("{time} exceeds allowed paste lifetime");
+                return Err(StatusCode::BAD_REQUEST);
+            }
+        }
+    }
+
     // 3GB max; this is a soft-limit of RocksDb
     if body.len() >= 3_221_225_472 {
         return Err(StatusCode::PAYLOAD_TOO_LARGE);
     }
 
-    let paste = Paste::new(maybe_expires.map(|v| v.0).unwrap_or_default(), body);
     let mut new_key = None;
 
+    trace!("Generating short code...");
+
     // Try finding a code; give up after 1000 attempts
     // Statistics show that this is very unlikely to happen
-    for _ in 0..1000 {
-        let code: ShortCode<N> = thread_rng().sample(short_code::Generator);
+    for i in 0..1000 {
+        let code: ShortCode<N> = get_csrng().sample(short_code::Generator);
         let db = Arc::clone(&db);
         let key = code.as_bytes();
-        let query = task::spawn_blocking(move || db.key_may_exist(key)).await;
+        let query = task::spawn_blocking(move || {
+            db.key_may_exist_cf(db.cf_handle(META_CF_NAME).unwrap(), key)
+        })
+        .await;
         if matches!(query, Ok(false)) {
             new_key = Some(key);
+            trace!("Found new key after {i} attempts.");
+            break;
         }
     }
 
     let key = if let Some(key) = new_key {
         key
     } else {
-        error!("Failed to generate a valid shortcode");
+        error!("Failed to generate a valid short code!");
         return Err(StatusCode::INTERNAL_SERVER_ERROR);
     };
 
-    let value = if let Ok(v) = bincode::serialize(&paste) {
-        v
-    } else {
-        error!("Failed to serialize paste?!");
-        return Err(StatusCode::INTERNAL_SERVER_ERROR);
-    };
-
-    match task::spawn_blocking(move || db.put(key, value)).await {
-        Ok(Ok(_)) => (),
+    let db_ref = Arc::clone(&db);
+    match task::spawn_blocking(move || {
+        let blob_cf = db_ref.cf_handle(BLOB_CF_NAME).unwrap();
+        let meta_cf = db_ref.cf_handle(META_CF_NAME).unwrap();
+        let data = bincode::serialize(&body).expect("bincode to serialize");
+        db_ref.put_cf(blob_cf, key, data)?;
+        let expires = maybe_expires.map(|v| v.0).unwrap_or_default();
+        let expires = if let Expiration::BurnAfterReading = expires {
+            Expiration::BurnAfterReadingWithDeadline(Utc::now() + *MAX_PASTE_AGE)
+        } else {
+            expires
+        };
+        let meta = bincode::serialize(&expires).expect("bincode to serialize");
+        if db_ref.put_cf(meta_cf, key, meta).is_err() {
+            // try and roll back on metadata write failure
+            db_ref.delete_cf(blob_cf, key)?;
+        }
+        Result::<_, anyhow::Error>::Ok(())
+    })
+    .await
+    {
+        Ok(Ok(_)) => {
+            if let Some(expires) = maybe_expires {
+                if let Expiration::UnixTime(expiration_time)
+                | Expiration::BurnAfterReadingWithDeadline(expiration_time) = expires.0
+                {
+                    let sleep_duration =
+                        (expiration_time - Utc::now()).to_std().unwrap_or_default();
+                    task::spawn(async move {
+                        tokio::time::sleep(sleep_duration).await;
+                        delete_entry(db, key);
+                    });
+                }
+            }
+        }
         e => {
-            error!("Failed to insert paste into db: {:?}", e);
+            error!("Failed to insert paste into db: {e:?}");
             return Err(StatusCode::INTERNAL_SERVER_ERROR);
         }
     }
@@ -120,10 +290,10 @@ async fn paste<const N: usize>(
 ) -> Result<(HeaderMap, Bytes), StatusCode> {
     let key = url.as_bytes();
 
-    let parsed: Paste = {
-        // not sure if perf of get_pinned is better than spawn_blocking
-        let query_result = db.get_pinned(key).map_err(|e| {
-            error!("Failed to fetch initial query: {}", e);
+    let metadata: Expiration = {
+        let meta_cf = db.cf_handle(META_CF_NAME).unwrap();
+        let query_result = db.get_cf(meta_cf, key).map_err(|e| {
+            error!("Failed to fetch initial query: {e}");
             StatusCode::INTERNAL_SERVER_ERROR
         })?;
 
@@ -138,41 +308,51 @@ async fn paste<const N: usize>(
         })?
     };
 
-    if parsed.expired() {
-        let join_handle = task::spawn_blocking(move || db.delete(key))
-            .await
-            .map_err(|e| {
-                error!("Failed to join handle: {}", e);
+    // Check if paste has expired.
+    if let Expiration::UnixTime(expires) = metadata {
+        if expires < Utc::now() {
+            delete_entry(db, url.as_bytes()).await.map_err(|e| {
+                error!("Failed to join handle: {e}");
                 StatusCode::INTERNAL_SERVER_ERROR
-            })?;
-
-        join_handle.map_err(|e| {
-            error!("Failed to delete expired paste: {}", e);
-            StatusCode::INTERNAL_SERVER_ERROR
-        })?;
-
-        return Err(StatusCode::NOT_FOUND);
+            })??;
+            return Err(StatusCode::NOT_FOUND);
+        }
     }
 
-    if parsed.is_burn_after_read() {
-        let join_handle = task::spawn_blocking(move || db.delete(key))
-            .await
-            .map_err(|e| {
-                error!("Failed to join handle: {}", e);
-                StatusCode::INTERNAL_SERVER_ERROR
-            })?;
-
-        join_handle.map_err(|e| {
-            error!("Failed to burn paste after read: {}", e);
+    let paste: Bytes = {
+        // not sure if perf of get_pinned is better than spawn_blocking
+        let blob_cf = db.cf_handle(BLOB_CF_NAME).unwrap();
+        let query_result = db.get_pinned_cf(blob_cf, key).map_err(|e| {
+            error!("Failed to fetch initial query: {e}");
             StatusCode::INTERNAL_SERVER_ERROR
         })?;
+
+        let data = match query_result {
+            Some(data) => data,
+            None => return Err(StatusCode::NOT_FOUND),
+        };
+
+        bincode::deserialize(&data).map_err(|_| {
+            error!("Failed to deserialize data?!");
+            StatusCode::INTERNAL_SERVER_ERROR
+        })?
+    };
+
+    // Check if we need to burn after read
+    if matches!(
+        metadata,
+        Expiration::BurnAfterReading | Expiration::BurnAfterReadingWithDeadline(_)
+    ) {
+        delete_entry(db, key).await.map_err(|e| {
+            error!("Failed to join handle: {e}");
+            StatusCode::INTERNAL_SERVER_ERROR
+        })??;
     }
 
     let mut map = HeaderMap::new();
-    if let Some(expiration) = parsed.expiration {
-        map.insert(EXPIRES, expiration.into());
-    }
-    Ok((map, parsed.bytes))
+    map.insert(EXPIRES, metadata.into());
+
+    Ok((map, paste))
 }
 
 #[instrument(skip(db))]
@@ -180,52 +360,24 @@ async fn delete<const N: usize>(
     Extension(db): Extension<Arc<DB>>,
     Path(url): Path<ShortCode<N>>,
 ) -> StatusCode {
-    match task::spawn_blocking(move || db.delete(url.as_bytes())).await {
-        Ok(Ok(_)) => StatusCode::OK,
+    match delete_entry(db, url.as_bytes()).await {
+        Ok(_) => StatusCode::OK,
         _ => StatusCode::INTERNAL_SERVER_ERROR,
     }
 }
 
-/// Periodic clean-up task that deletes expired entries.
-async fn cleanup(stop_signal: Arc<AtomicBool>, db: Arc<DB>) {
-    while !stop_signal.load(Ordering::Acquire) {
-        tokio::time::sleep(Duration::minutes(5).to_std().expect("infallible")).await;
-        let mut batch = WriteBatch::default();
-        for (key, value) in db.snapshot().iterator(IteratorMode::Start) {
-            // TODO: only partially decode struct for max perf
-            let join_handle = task::spawn_blocking(move || {
-                bincode::deserialize::<Paste>(&value)
-                    .as_ref()
-                    .map(Paste::expired)
-                    .unwrap_or_default()
-            })
-            .await;
-
-            let should_delete = match join_handle {
-                Ok(should_delete) => should_delete,
-                Err(e) => {
-                    error!("Failed to join thread?! {}", e);
-                    false
-                }
-            };
-
-            if should_delete {
-                batch.delete(key);
-            }
+fn delete_entry<const N: usize>(db: Arc<DB>, key: [u8; N]) -> JoinHandle<Result<(), StatusCode>> {
+    task::spawn_blocking(move || {
+        let blob_cf = db.cf_handle(BLOB_CF_NAME).unwrap();
+        let meta_cf = db.cf_handle(META_CF_NAME).unwrap();
+        if let Err(e) = db.delete_cf(blob_cf, &key) {
+            warn!("{e}");
+            return Err(StatusCode::INTERNAL_SERVER_ERROR);
         }
-
-        let db = Arc::clone(&db);
-        let join_handle = task::spawn_blocking(move || db.write(batch)).await;
-        let db_op_res = match join_handle {
-            Ok(res) => res,
-            Err(e) => {
-                error!("Failed to join handle?! {}", e);
-                continue;
-            }
-        };
-
-        if let Err(e) = db_op_res {
-            warn!("Failed to cleanup db: {}", e);
+        if let Err(e) = db.delete_cf(meta_cf, &key) {
+            warn!("{e}");
+            return Err(StatusCode::INTERNAL_SERVER_ERROR);
         }
-    }
+        Ok(())
+    })
 }

server/src/paste.rs

@@ -1,95 +0,0 @@
-use axum::body::Bytes;
-use chrono::{DateTime, Duration, Utc};
-use headers::{Header, HeaderName, HeaderValue};
-use lazy_static::lazy_static;
-use serde::{Deserialize, Serialize};
-
-#[derive(Serialize, Deserialize)]
-pub struct Paste {
-    pub expiration: Option<Expiration>,
-    pub bytes: Bytes,
-}
-
-impl Paste {
-    pub fn new(expiration: impl Into<Option<Expiration>>, bytes: Bytes) -> Self {
-        Self {
-            expiration: expiration.into(),
-            bytes,
-        }
-    }
-
-    pub fn expired(&self) -> bool {
-        self.expiration
-            .map(|expires| match expires {
-                Expiration::BurnAfterReading => false,
-                Expiration::UnixTime(expiration) => expiration < Utc::now(),
-            })
-            .unwrap_or_default()
-    }
-
-    pub const fn is_burn_after_read(&self) -> bool {
-        matches!(self.expiration, Some(Expiration::BurnAfterReading))
-    }
-}
-
-#[derive(Serialize, Deserialize, Clone, Copy, Debug)]
-pub enum Expiration {
-    BurnAfterReading,
-    UnixTime(DateTime<Utc>),
-}
-
-lazy_static! {
-    pub static ref EXPIRATION_HEADER_NAME: HeaderName = HeaderName::from_static("burn-after");
-}
-
-impl Header for Expiration {
-    fn name() -> &'static HeaderName {
-        &*EXPIRATION_HEADER_NAME
-    }
-
-    fn decode<'i, I>(values: &mut I) -> Result<Self, headers::Error>
-    where
-        Self: Sized,
-        I: Iterator<Item = &'i HeaderValue>,
-    {
-        match values
-            .next()
-            .ok_or_else(headers::Error::invalid)?
-            .as_bytes()
-        {
-            b"read" => Ok(Self::BurnAfterReading),
-            b"5m" => Ok(Self::UnixTime(Utc::now() + Duration::minutes(5))),
-            b"10m" => Ok(Self::UnixTime(Utc::now() + Duration::minutes(10))),
-            b"1h" => Ok(Self::UnixTime(Utc::now() + Duration::hours(1))),
-            b"1d" => Ok(Self::UnixTime(Utc::now() + Duration::days(1))),
-            _ => Err(headers::Error::invalid()),
-        }
-    }
-
-    fn encode<E: Extend<HeaderValue>>(&self, container: &mut E) {
-        container.extend(std::iter::once(self.into()));
-    }
-}
-
-impl From<&Expiration> for HeaderValue {
-    fn from(expiration: &Expiration) -> Self {
-        unsafe {
-            HeaderValue::from_maybe_shared_unchecked(match expiration {
-                Expiration::BurnAfterReading => Bytes::from_static(b"0"),
-                Expiration::UnixTime(duration) => Bytes::from(duration.to_rfc3339()),
-            })
-        }
-    }
-}
-
-impl From<Expiration> for HeaderValue {
-    fn from(expiration: Expiration) -> Self {
-        (&expiration).into()
-    }
-}
-
-impl Default for Expiration {
-    fn default() -> Self {
-        Self::UnixTime(Utc::now() + Duration::days(1))
-    }
-}

server/src/short_code.rs

@@ -1,8 +1,23 @@
-use std::convert::{TryFrom, TryInto};
+// OmegaUpload Zero Knowledge File Hosting
+// Copyright (C) 2021  Edward Shen
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// 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 Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 use std::fmt::Debug;
-use std::iter::FromIterator;
 
 use rand::prelude::Distribution;
+use rand::Rng;
 use serde::de::{Unexpected, Visitor};
 use serde::Deserialize;
 
@@ -111,7 +126,7 @@ pub struct Generator;
 const ALPHABET: &[u8; 32] = b"23456789CFGHJMPQRVWXcfghjmpqrvwx";
 
 impl Distribution<ShortCodeChar> for Generator {
-    fn sample<R: rand::Rng + ?Sized>(&self, rng: &mut R) -> ShortCodeChar {
+    fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> ShortCodeChar {
         let value = rng.gen_range(0..32);
         assert!(value < 32);
         ShortCodeChar(ALPHABET[value] as char)
@@ -119,12 +134,13 @@ impl Distribution<ShortCodeChar> for Generator {
 }
 
 impl<const N: usize> Distribution<ShortCode<N>> for Generator {
-    fn sample<R: rand::Rng + ?Sized>(&self, rng: &mut R) -> ShortCode<N> {
+    fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> ShortCode<N> {
         let mut arr = [ShortCodeChar('\0'); N];
 
         for c in arr.iter_mut() {
             *c = self.sample(rng);
         }
+
         ShortCode(arr)
     }
 }

test/0000-test-patch.patch

@@ -0,0 +1,442 @@
+From 960344b240161b36cca35c22b6a685162b0f217e Mon Sep 17 00:00:00 2001
+From: William Tan <code@wtan.me>
+Date: Tue, 11 Jan 2022 22:31:18 -0500
+Subject: [PATCH] Update dependencies
+
+---
+ Cargo.lock     | 144 ++++++++++++++++++++++---------------------------
+ cli/Cargo.toml |   4 +-
+ 2 files changed, 65 insertions(+), 83 deletions(-)
+
+diff --git a/Cargo.lock b/Cargo.lock
+index fc97ae7..a16f56f 100644
+--- a/Cargo.lock
++++ b/Cargo.lock
+@@ -28,9 +28,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "anyhow"
+-version = "1.0.51"
++version = "1.0.52"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "8b26702f315f53b6071259e15dd9d64528213b44d61de1ec926eca7715d62203"
++checksum = "84450d0b4a8bd1ba4144ce8ce718fbc5d071358b1e5384bace6536b3d1f2d5b3"
+ 
+ [[package]]
+ name = "argon2"
+@@ -149,9 +149,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+ 
+ [[package]]
+ name = "blake2"
+-version = "0.10.0"
++version = "0.10.2"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "a58bdf5134c5beae6fc382002c4d88950bad1feea20f8f7165494b6b43b049de"
++checksum = "b94ba84325db59637ffc528bbe8c7f86c02c57cff5c0e2b9b00f9a851f42f309"
+ dependencies = [
+  "digest 0.10.1",
+ ]
+@@ -176,9 +176,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "bumpalo"
+-version = "3.8.0"
++version = "3.9.1"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "8f1e260c3a9040a7c19a12468758f4c16f31a81a1fe087482be9570ec864bb6c"
++checksum = "a4a45a46ab1f2412e53d3a0ade76ffad2025804294569aae387231a0cd6e0899"
+ 
+ [[package]]
+ name = "byte-unit"
+@@ -295,9 +295,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "clap"
+-version = "3.0.0-rc.7"
++version = "3.0.6"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "9468f8012246b0836c6fd11725102b0844254985f2462b6c637d50040ef49df0"
++checksum = "1957aa4a5fb388f0a0a73ce7556c5b42025b874e5cdc2c670775e346e97adec0"
+ dependencies = [
+  "atty",
+  "bitflags",
+@@ -312,9 +312,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "clap_derive"
+-version = "3.0.0-rc.7"
++version = "3.0.6"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "b72e1af32a4de4d21a43d26de33fe69c00e895371bd8b1523d674f011b610467"
++checksum = "517358c28fcef6607bf6f76108e02afad7e82297d132a6b846dcc1fc3efcd153"
+ dependencies = [
+  "heck",
+  "proc-macro-error",
+@@ -392,9 +392,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "fixedbitset"
+-version = "0.4.0"
++version = "0.4.1"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "398ea4fabe40b9b0d885340a2a991a44c8a645624075ad966d21f88688e2b69e"
++checksum = "279fb028e20b3c4c320317955b77c5e0c9701f05a1d309905d6fc702cdc5053e"
+ 
+ [[package]]
+ name = "flate2"
+@@ -515,9 +515,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "generic-array"
+-version = "0.14.4"
++version = "0.14.5"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "501466ecc8a30d1d3b7fc9229b122b2ce8ed6e9d9223f1138d4babb253e51817"
++checksum = "fd48d33ec7f05fbfa152300fdad764757cbded343c1aa1cff2fbaf4134851803"
+ dependencies = [
+  "typenum",
+  "version_check",
+@@ -556,9 +556,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "h2"
+-version = "0.3.9"
++version = "0.3.10"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "8f072413d126e57991455e0a922b31e4c8ba7c2ffbebf6b78b4f8521397d65cd"
++checksum = "0c9de88456263e249e241fcd211d3954e2c9b0ef7ccfc235a444eb367cae3689"
+ dependencies = [
+  "bytes",
+  "fnv",
+@@ -606,12 +606,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "heck"
+-version = "0.3.3"
++version = "0.4.0"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "6d621efb26863f0e9924c6ac577e8275e5e6b77455db64ffa6c65c904e9e132c"
+-dependencies = [
+- "unicode-segmentation",
+-]
++checksum = "2540771e65fc8cb83cd6e8a237f70c319bd5c29f78ed1084ba5d50eeac86f7f9"
+ 
+ [[package]]
+ name = "hermit-abi"
+@@ -624,13 +621,13 @@ dependencies = [
+ 
+ [[package]]
+ name = "http"
+-version = "0.2.5"
++version = "0.2.6"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "1323096b05d41827dadeaee54c9981958c0f94e670bc94ed80037d1a7b8b186b"
++checksum = "31f4c6746584866f0feabcc69893c5b51beef3831656a968ed7ae254cdc4fd03"
+ dependencies = [
+  "bytes",
+  "fnv",
+- "itoa 0.4.8",
++ "itoa 1.0.1",
+ ]
+ 
+ [[package]]
+@@ -706,9 +703,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "indexmap"
+-version = "1.7.0"
++version = "1.8.0"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
++checksum = "282a6247722caba404c065016bbfa522806e51714c34f5dfc3e4a3a46fcb4223"
+ dependencies = [
+  "autocfg",
+  "hashbrown",
+@@ -921,9 +918,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "num_cpus"
+-version = "1.13.0"
++version = "1.13.1"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
++checksum = "19e64526ebdee182341572e50e9ad03965aa510cd94427a4549448f285e957a1"
+ dependencies = [
+  "hermit-abi",
+  "libc",
+@@ -1086,18 +1083,18 @@ dependencies = [
+ 
+ [[package]]
+ name = "pin-project"
+-version = "1.0.8"
++version = "1.0.10"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "576bc800220cc65dac09e99e97b08b358cfab6e17078de8dc5fee223bd2d0c08"
++checksum = "58ad3879ad3baf4e44784bc6a718a8698867bb991f8ce24d1bcbe2cfb4c3a75e"
+ dependencies = [
+  "pin-project-internal",
+ ]
+ 
+ [[package]]
+ name = "pin-project-internal"
+-version = "1.0.8"
++version = "1.0.10"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "6e8fe8163d14ce7f0cdac2e040116f22eac817edabff0be91e8aff7e9accf389"
++checksum = "744b6f092ba29c3650faf274db506afd39944f48420f6c86b17cfe0ee1cb36bb"
+ dependencies = [
+  "proc-macro2",
+  "quote",
+@@ -1106,9 +1103,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "pin-project-lite"
+-version = "0.2.7"
++version = "0.2.8"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "8d31d11c69a6b52a174b42bdc0c30e5e11670f90788b2c471c31c1d17d449443"
++checksum = "e280fbe77cc62c91527259e9442153f4688736748d24660126286329742b4c6c"
+ 
+ [[package]]
+ name = "pin-utils"
+@@ -1129,9 +1126,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "ppv-lite86"
+-version = "0.2.15"
++version = "0.2.16"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "ed0cfbc8191465bed66e1718596ee0b0b35d5ee1f41c5df2189d0fe8bde535ba"
++checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
+ 
+ [[package]]
+ name = "proc-macro-error"
+@@ -1159,18 +1156,18 @@ dependencies = [
+ 
+ [[package]]
+ name = "proc-macro2"
+-version = "1.0.34"
++version = "1.0.36"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "2f84e92c0f7c9d58328b85a78557813e4bd845130db68d7184635344399423b1"
++checksum = "c7342d5883fbccae1cc37a2353b09c87c9b0f3afd73f5fb9bba687a1f733b029"
+ dependencies = [
+  "unicode-xid",
+ ]
+ 
+ [[package]]
+ name = "quote"
+-version = "1.0.10"
++version = "1.0.14"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "38bc8cc6a5f2e3655e0899c1b848643b2562f853f114bfec7be120678e3ace05"
++checksum = "47aa80447ce4daf1717500037052af176af5d38cc3e571d9ec1c7353fc10c87d"
+ dependencies = [
+  "proc-macro2",
+ ]
+@@ -1258,15 +1255,16 @@ dependencies = [
+ 
+ [[package]]
+ name = "reqwest"
+-version = "0.11.7"
++version = "0.11.9"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "07bea77bc708afa10e59905c3d4af7c8fd43c9214251673095ff8b14345fcbc5"
++checksum = "87f242f1488a539a79bac6dbe7c8609ae43b7914b7736210f239a37cccb32525"
+ dependencies = [
+  "base64",
+  "bytes",
+  "encoding_rs",
+  "futures-core",
+  "futures-util",
++ "h2",
+  "http",
+  "http-body",
+  "hyper",
+@@ -1343,7 +1341,7 @@ dependencies = [
+  "log",
+  "ring",
+  "sct",
+- "webpki 0.22.0",
++ "webpki",
+ ]
+ 
+ [[package]]
+@@ -1382,18 +1380,18 @@ dependencies = [
+ 
+ [[package]]
+ name = "serde"
+-version = "1.0.132"
++version = "1.0.133"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "8b9875c23cf305cd1fd7eb77234cbb705f21ea6a72c637a5c6db5fe4b8e7f008"
++checksum = "97565067517b60e2d1ea8b268e59ce036de907ac523ad83a0475da04e818989a"
+ dependencies = [
+  "serde_derive",
+ ]
+ 
+ [[package]]
+ name = "serde_derive"
+-version = "1.0.132"
++version = "1.0.133"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "ecc0db5cb2556c0e558887d9bbdcf6ac4471e83ff66cf696e5419024d1606276"
++checksum = "ed201699328568d8d08208fdd080e3ff594e6c422e438b6705905da01005d537"
+ dependencies = [
+  "proc-macro2",
+  "quote",
+@@ -1402,9 +1400,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "serde_json"
+-version = "1.0.73"
++version = "1.0.74"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "bcbd0344bc6533bc7ec56df11d42fb70f1b912351c0825ccb7211b59d8af7cf5"
++checksum = "ee2bb9cd061c5865d345bb02ca49fcef1391741b672b54a0bf7b679badec3142"
+ dependencies = [
+  "itoa 1.0.1",
+  "ryu",
+@@ -1453,9 +1451,9 @@ checksum = "43b2853a4d09f215c24cc5489c992ce46052d359b5109343cbafbf26bc62f8a3"
+ 
+ [[package]]
+ name = "signal-hook"
+-version = "0.3.12"
++version = "0.3.13"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "c35dfd12afb7828318348b8c408383cf5071a086c1d4ab1c0f9840ec92dbb922"
++checksum = "647c97df271007dcea485bb74ffdb57f2e683f1306c854f468a0c244badabf2d"
+ dependencies = [
+  "libc",
+  "signal-hook-registry",
+@@ -1472,9 +1470,9 @@ dependencies = [
+ 
+ [[package]]
+ name = "signal-hook-tokio"
+-version = "0.3.0"
++version = "0.3.1"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "f6c5d32165ff8b94e68e7b3bdecb1b082e958c22434b363482cfb89dcd6f3ff8"
++checksum = "213241f76fb1e37e27de3b6aa1b068a2c333233b59cca6634f634b80a27ecf1e"
+ dependencies = [
+  "futures-core",
+  "libc",
+@@ -1524,9 +1522,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
+ 
+ [[package]]
+ name = "syn"
+-version = "1.0.82"
++version = "1.0.85"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "8daf5dd0bb60cbd4137b1b587d2fc0ae729bc07cf01cd70b36a1ed5ade3b9d59"
++checksum = "a684ac3dcd8913827e18cd09a68384ee66c1de24157e3c556c9ab16d85695fb7"
+ dependencies = [
+  "proc-macro2",
+  "quote",
+@@ -1643,7 +1641,7 @@ checksum = "a27d5f2b839802bd8267fa19b0530f5a08b9c08cd417976be2a65d130fe1c11b"
+ dependencies = [
+  "rustls",
+  "tokio",
+- "webpki 0.22.0",
++ "webpki",
+ ]
+ 
+ [[package]]
+@@ -1794,9 +1792,9 @@ checksum = "e73fc24a5427b3b15e2b0bcad8ef61b5affb1da8ac89c8bf3f196c8692d57f02"
+ 
+ [[package]]
+ name = "tree_magic_mini"
+-version = "3.0.2"
++version = "3.0.3"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "7a7581560dc616314f7d73e81419c783d93a92e7fc7331b3041ff57bab240ea6"
++checksum = "91adfd0607cacf6e4babdb870e9bec4037c1c4b151cfd279ccefc5e0c7feaa6d"
+ dependencies = [
+  "bytecount",
+  "fnv",
+@@ -1815,9 +1813,9 @@ checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
+ 
+ [[package]]
+ name = "typenum"
+-version = "1.14.0"
++version = "1.15.0"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "b63708a265f51345575b27fe43f9500ad611579e764c79edbc2037b1121959ec"
++checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
+ 
+ [[package]]
+ name = "unicase"
+@@ -1843,12 +1841,6 @@ dependencies = [
+  "tinyvec",
+ ]
+ 
+-[[package]]
+-name = "unicode-segmentation"
+-version = "1.8.0"
+-source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "8895849a949e7845e06bd6dc1aa51731a103c42707010a5b591c0038fb73385b"
+-
+ [[package]]
+ name = "unicode-xid"
+ version = "0.2.2"
+@@ -1891,9 +1883,9 @@ checksum = "7cf7d77f457ef8dfa11e4cd5933c5ddb5dc52a94664071951219a97710f0a32b"
+ 
+ [[package]]
+ name = "version_check"
+-version = "0.9.3"
++version = "0.9.4"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
++checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+ 
+ [[package]]
+ name = "want"
+@@ -1989,16 +1981,6 @@ dependencies = [
+  "wasm-bindgen",
+ ]
+ 
+-[[package]]
+-name = "webpki"
+-version = "0.21.4"
+-source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "b8e38c0608262c46d4a56202ebabdeb094cef7e560ca7a226c6bf055188aa4ea"
+-dependencies = [
+- "ring",
+- "untrusted",
+-]
+-
+ [[package]]
+ name = "webpki"
+ version = "0.22.0"
+@@ -2011,11 +1993,11 @@ dependencies = [
+ 
+ [[package]]
+ name = "webpki-roots"
+-version = "0.21.1"
++version = "0.22.2"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "aabe153544e473b775453675851ecc86863d2a81d786d741f6b76778f2a48940"
++checksum = "552ceb903e957524388c4d3475725ff2c8b7960922063af6ce53c9a43da07449"
+ dependencies = [
+- "webpki 0.21.4",
++ "webpki",
+ ]
+ 
+ [[package]]
+diff --git a/cli/Cargo.toml b/cli/Cargo.toml
+index 6d3ffe3..b47554d 100644
+--- a/cli/Cargo.toml
++++ b/cli/Cargo.toml
+@@ -13,6 +13,6 @@ omegaupload-common = "0.1"
+ 
+ anyhow = "1"
+ atty = "0.2"
+-clap = { version = "3.0.0-rc.7", features = ["derive"] }
++clap = { version = "3", features = ["derive"] }
+ reqwest = { version = "0.11", default-features = false, features = ["rustls-tls", "blocking"] }
+-rpassword = "5"
+\ No newline at end of file
++rpassword = "5"
+-- 
+2.34.1
+

test/LICENSE.md

@@ -0,0 +1,41 @@
+This folder contains mixed media that are under different licenses.
+- `music.mp3`, written by Kevin McLeod, was sourced at https://freepd.com under
+  the CC0 1.0 Universal license. The file was trimmed to the first 30 seconds.
+- `movie.mp4` is a 10 second snippet of Big Buck Bunny sourced at
+  http://bbb3d.renderfarming.net/download.html under the Attribution 3.0
+  Unported (CC BY 3.0) license.
+- `movie.mkv` is identical to `movie.mp4` but transcoded as a `.mkv` file. It is
+  under the same license as `movie.mp4`.
+- `image.png` has all rights reserved, with the sole exception of copying and
+  distribution for testing purposes for this project only.
+- `image.png.gz` is under the same license as `image.png`.
+- `image.webp` is under the same license as `image.png`.
+- All other files are dual-licensed under the CC0 1.0 Universal License or MIT
+  No Attribution License, at your convenience.
+
+The CC BY 3.0 License may be found at
+https://creativecommons.org/licenses/by/3.0/.
+
+The CC0 1.0 Universal License is may be found at
+https://creativecommons.org/publicdomain/zero/1.0/legalcode.
+
+The MIT No Attribution is displayed below:
+
+```
+MIT No Attribution
+
+Copyright 2021 Edward Shen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this
+software and associated documentation files (the "Software"), to deal in the Software
+without restriction, including without limitation the rights to use, copy, modify,
+merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+```

test/code.rs

@@ -0,0 +1,229 @@
+use std::ops::{Deref, DerefMut};
+
+use argon2::Argon2;
+use chacha20poly1305::aead::generic_array::sequence::GenericSequence;
+use chacha20poly1305::aead::generic_array::GenericArray;
+use chacha20poly1305::aead::{AeadInPlace, NewAead};
+use chacha20poly1305::XChaCha20Poly1305;
+use chacha20poly1305::XNonce;
+use rand::{thread_rng, Rng};
+use secrecy::{ExposeSecret, Secret, SecretVec, Zeroize};
+use typenum::Unsigned;
+
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+    #[error("Invalid password.")]
+    Password,
+    #[error("Invalid secret key.")]
+    SecretKey,
+    #[error("An error occurred while trying to decrypt the blob.")]
+    Encryption,
+    #[error("An error occurred while trying to derive a secret key.")]
+    Kdf,
+}
+
+// This struct intentionally prevents implement Clone or Copy
+#[derive(Default)]
+pub struct Key(chacha20poly1305::Key);
+
+impl Key {
+    pub fn new_secret(vec: Vec<u8>) -> Option<Secret<Self>> {
+        chacha20poly1305::Key::from_exact_iter(vec.into_iter())
+            .map(Self)
+            .map(Secret::new)
+    }
+}
+
+impl AsRef<chacha20poly1305::Key> for Key {
+    fn as_ref(&self) -> &chacha20poly1305::Key {
+        &self.0
+    }
+}
+
+impl Deref for Key {
+    type Target = chacha20poly1305::Key;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+impl DerefMut for Key {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl Zeroize for Key {
+    fn zeroize(&mut self) {
+        self.0.zeroize();
+    }
+}
+
+/// Seals the provided message with an optional message. The resulting sealed
+/// message has the nonce used to encrypt the message appended to it as well as
+/// a salt string used to derive the key. In other words, the modified buffer is
+/// one of the following to possibilities, depending if there was a password
+/// provided:
+///
+/// ```
+/// modified = C(message, rng_key, nonce) || nonce
+/// ```
+/// or
+/// ```
+/// modified = C(C(message, rng_key, nonce), kdf(pw, salt), nonce + 1) || nonce || salt
+/// ```
+///
+/// Where:
+///  - `C(message, key, nonce)` represents encrypting a provided message with
+///     `XChaCha20Poly1305`.
+///  - `rng_key` represents a randomly generated key.
+///  - `kdf(pw, salt)` represents a key derived from Argon2.
+pub fn seal_in_place(
+    message: &mut Vec<u8>,
+    pw: Option<SecretVec<u8>>,
+) -> Result<Secret<Key>, Error> {
+    let (key, nonce) = gen_key_nonce();
+    let cipher = XChaCha20Poly1305::new(key.expose_secret());
+    cipher
+        .encrypt_in_place(&nonce, &[], message)
+        .map_err(|_| Error::Encryption)?;
+
+    let mut maybe_salt_string = None;
+    if let Some(password) = pw {
+        let (key, salt_string) = kdf(&password).map_err(|_| Error::Kdf)?;
+        maybe_salt_string = Some(salt_string);
+        let cipher = XChaCha20Poly1305::new(key.expose_secret());
+        cipher
+            .encrypt_in_place(&nonce.increment(), &[], message)
+            .map_err(|_| Error::Encryption)?;
+    }
+
+    message.extend_from_slice(nonce.as_slice());
+    if let Some(maybe_salted_string) = maybe_salt_string {
+        message.extend_from_slice(maybe_salted_string.as_ref());
+    }
+    Ok(key)
+}
+
+pub fn open_in_place(
+    data: &mut Vec<u8>,
+    key: &Secret<Key>,
+    password: Option<SecretVec<u8>>,
+) -> Result<(), Error> {
+    let pw_key = if let Some(password) = password {
+        let salt_buf = data.split_off(data.len() - Salt::SIZE);
+        let argon = Argon2::default();
+        let mut pw_key = Key::default();
+        argon
+            .hash_password_into(password.expose_secret(), &salt_buf, &mut pw_key)
+            .map_err(|_| Error::Kdf)?;
+        Some(Secret::new(pw_key))
+    } else {
+        None
+    };
+
+    let nonce = Nonce::from_slice(&data.split_off(data.len() - Nonce::SIZE));
+
+    // At this point we should have a buffer that's only the ciphertext.
+
+    if let Some(key) = pw_key {
+        let cipher = XChaCha20Poly1305::new(key.expose_secret());
+        cipher
+            .decrypt_in_place(&nonce.increment(), &[], data)
+            .map_err(|_| Error::Password)?;
+    }
+
+    let cipher = XChaCha20Poly1305::new(key.expose_secret());
+    cipher
+        .decrypt_in_place(&nonce, &[], data)
+        .map_err(|_| Error::SecretKey)?;
+
+    Ok(())
+}
+
+/// Securely generates a random key and nonce.
+#[must_use]
+fn gen_key_nonce() -> (Secret<Key>, Nonce) {
+    let mut rng = thread_rng();
+    let mut key = GenericArray::default();
+    rng.fill(key.as_mut_slice());
+    let mut nonce = Nonce::default();
+    rng.fill(nonce.as_mut_slice());
+    (Secret::new(Key(key)), nonce)
+}
+
+// Type alias; to ensure that we're consistent on what the inner impl is.
+type NonceImpl = XNonce;
+
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+struct Nonce(NonceImpl);
+
+impl Default for Nonce {
+    fn default() -> Self {
+        Self(GenericArray::default())
+    }
+}
+
+impl Deref for Nonce {
+    type Target = NonceImpl;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for Nonce {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl AsRef<[u8]> for Nonce {
+    fn as_ref(&self) -> &[u8] {
+        self.0.as_ref()
+    }
+}
+
+impl Nonce {
+    const SIZE: usize = <NonceImpl as GenericSequence<_>>::Length::USIZE;
+
+    #[must_use]
+    pub fn increment(&self) -> Self {
+        let mut inner = self.0;
+        inner.as_mut_slice()[0] += 1;
+        Self(inner)
+    }
+
+    #[must_use]
+    pub fn from_slice(slice: &[u8]) -> Self {
+        Self(*NonceImpl::from_slice(slice))
+    }
+}
+
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+struct Salt([u8; Self::SIZE]);
+
+impl Salt {
+    const SIZE: usize = argon2::password_hash::Salt::RECOMMENDED_LENGTH;
+
+    fn random() -> Self {
+        let mut salt = [0_u8; Self::SIZE];
+        thread_rng().fill(&mut salt);
+        Self(salt)
+    }
+}
+
+impl AsRef<[u8]> for Salt {
+    fn as_ref(&self) -> &[u8] {
+        self.0.as_ref()
+    }
+}
+
+/// Hashes an input to output a usable key.
+fn kdf(password: &SecretVec<u8>) -> Result<(Secret<Key>, Salt), argon2::Error> {
+    let salt = Salt::random();
+    let hasher = Argon2::default();
+    let mut key = Key::default();
+    hasher.hash_password_into(password.expose_secret().as_ref(), salt.as_ref(), &mut key)?;
+
+    Ok((Secret::new(key), salt))
+}

test/image.svg

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="100%" height="100%" viewBox="0 0 4417 3259" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" xmlns:serif="http://www.serif.com/" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:1.41421;">
+    <g transform="matrix(4.16667,0,0,4.16667,0,0)">
+        <path d="M525.403,293.05C393.77,293.05 274.175,308.875 185.633,334.665L185.633,554.963C274.175,580.753 393.77,596.577 525.403,596.577C676.06,596.577 810.938,575.848 901.537,543.175L901.537,346.457C810.938,313.781 676.06,293.05 525.403,293.05Z" style="fill:rgb(143,30,28);fill-rule:nonzero;"/>
+        <path d="M907.423,492.442C903.566,481.779 902.794,468.288 906.062,455.28C911.912,431.991 928.483,419.082 943.075,426.447C946.693,428.274 949.849,431.178 952.462,434.865C952.701,434.864 952.94,434.865 953.177,434.881C953.177,434.881 997.729,487.987 956.49,550.884C955.595,554.453 879.956,642.602 862.447,645.408C850.987,647.244 877.338,555.41 907.423,492.442Z" style="fill:rgb(143,30,28);fill-rule:nonzero;"/>
+        <path d="M176.479,482.021C181.779,472.391 183.637,459.233 180.696,445.596C175.43,421.18 156.786,404.486 139.054,408.311C134.656,409.259 130.729,411.383 127.388,414.409C127.106,414.351 126.824,414.296 126.543,414.256C126.543,414.256 70.251,456.208 114.486,528.18C115.291,531.921 198.337,637.018 218.797,643.943C232.188,648.475 207.55,551.418 176.479,482.021Z" style="fill:rgb(143,30,28);fill-rule:nonzero;"/>
+        <path d="M97.467,488.066L97.474,488.081C97.659,488.226 97.831,488.357 97.467,488.066Z" style="fill:rgb(227,58,37);fill-rule:nonzero;"/>
+        <path d="M993.119,412.903C992.239,409.839 991.363,406.777 990.457,403.741L1021.14,359.29C1024.27,354.768 1024.91,348.892 1022.87,343.735C1020.83,338.605 1016.38,334.925 1011.11,334.025L959.224,325.22C957.216,321.118 955.108,317.078 952.994,313.07L974.791,263.167C977.034,258.08 976.56,252.172 973.588,247.559C970.627,242.923 965.598,240.215 960.239,240.426L907.583,242.339C904.856,238.789 902.087,235.271 899.261,231.818L911.362,178.328C912.587,172.895 911.04,167.21 907.259,163.264C903.497,159.332 898.03,157.705 892.833,158.981L841.544,171.589C838.223,168.654 834.845,165.756 831.43,162.916L833.278,108.002C833.476,102.443 830.885,97.161 826.434,94.077C821.988,90.973 816.341,90.504 811.478,92.811L763.631,115.558C759.777,113.348 755.903,111.158 751.987,109.041L743.532,54.926C742.675,49.444 739.147,44.788 734.206,42.661C729.283,40.523 723.638,41.213 719.315,44.469L676.656,76.476C672.456,75.08 668.237,73.743 663.964,72.465L645.578,21.148C643.708,15.919 639.397,12.077 634.14,10.997C628.901,9.926 623.51,11.74 619.877,15.799L583.97,55.971C579.628,55.471 575.285,55.015 570.927,54.639L543.204,7.926C540.394,3.194 535.434,0.314 530.088,0.314C524.754,0.314 519.784,3.194 516.998,7.926L489.265,54.639C484.907,55.015 480.543,55.471 476.209,55.971L440.299,15.799C436.663,11.74 431.252,9.926 426.031,10.997C420.776,12.089 416.458,15.919 414.598,21.148L396.196,72.465C391.936,73.743 387.715,75.092 383.505,76.476L340.861,44.469C336.525,41.203 330.881,40.514 325.945,42.661C321.026,44.788 317.484,49.444 316.632,54.926L308.171,109.041C304.257,111.158 300.382,113.335 296.518,115.558L248.676,92.811C243.818,90.496 238.147,90.973 233.722,94.077C229.277,97.161 226.68,102.443 226.882,108.002L228.717,162.916C225.312,165.756 221.943,168.654 218.605,171.589L167.326,158.981C162.115,157.716 156.656,159.332 152.885,163.264C149.09,167.21 147.553,172.895 148.772,178.328L160.851,231.818C158.049,235.285 155.276,238.789 152.558,242.339L99.903,240.426C94.588,240.269 89.516,242.923 86.547,247.559C83.572,252.172 83.122,258.08 85.336,263.167L107.15,313.07C105.031,317.078 102.926,321.118 100.901,325.22L49.018,334.025C43.747,334.913 39.304,338.591 37.254,343.735C35.217,348.892 35.878,354.768 38.989,359.29L69.679,403.741C69.442,404.525 69.224,405.317 68.989,406.105L52.126,424.017L97.467,488.066C97.467,488.066 532.619,688.798 936.264,491.462C982.372,483.189 993.119,412.903 993.119,412.903Z" style="fill:rgb(228,58,37);fill-rule:nonzero;"/>
+        <path d="M608.303,376.759C608.303,376.759 656.46,324.03 704.618,376.759C704.618,376.759 742.458,447.071 704.618,482.222C704.618,482.222 642.701,531.439 608.303,482.222C608.303,482.222 567.024,443.55 608.303,376.759Z" style="fill:rgb(3,4,4);fill-rule:nonzero;"/>
+        <path d="M664.057,396.32C664.057,416.853 651.954,433.499 637.027,433.499C622.103,433.499 610,416.853 610,396.32C610,375.788 622.103,359.14 637.027,359.14C651.954,359.14 664.057,375.788 664.057,396.32Z" style="fill:white;fill-rule:nonzero;"/>
+        <path d="M393.365,362.361C393.365,362.361 475.973,325.785 498.519,407.423C498.519,407.423 522.137,502.577 430.682,507.948C430.682,507.948 314.06,485.486 393.365,362.361Z" style="fill:rgb(3,4,4);fill-rule:nonzero;"/>
+        <path d="M434.855,397.668C434.855,418.841 422.375,436.014 406.978,436.014C391.587,436.014 379.104,418.841 379.104,397.668C379.104,376.49 391.587,359.322 406.978,359.322C422.375,359.322 434.855,376.49 434.855,397.668Z" style="fill:white;fill-rule:nonzero;"/>
+        <path d="M111.602,499.216C122.569,486.753 149.213,471.659 147.172,452.934C143.519,419.407 115.716,394.935 85.073,398.275C77.473,399.103 70.415,401.567 64.149,405.311C63.687,405.204 63.224,405.1 62.761,405.017C62.761,405.017 -40.87,455.89 18.197,557.674C18.754,562.811 136.045,713.342 168.985,724.805C190.544,732.307 149.074,596.165 111.602,499.216Z" style="fill:rgb(228,58,37);fill-rule:nonzero;"/>
+        <path d="M953.549,494.673C940.856,483.973 907.387,474.255 906.629,455.435C905.273,421.737 929.141,393.414 959.941,392.175C967.579,391.867 974.925,393.258 981.676,396.032C982.118,395.858 982.56,395.686 983.005,395.535C983.005,395.535 1093.03,430.486 1049.7,539.901C1049.91,545.064 956.232,711.317 925.355,727.536C905.146,738.151 930.861,596.105 953.549,494.673Z" style="fill:rgb(228,58,37);fill-rule:nonzero;"/>
+        <path d="M191.142,495.558C191.142,495.558 189.759,632.854 324.308,663.49L352.362,607.127C352.362,607.127 254.867,616.558 247.367,495.558L191.142,495.558Z" style="fill:rgb(228,58,37);fill-rule:nonzero;"/>
+        <path d="M876.362,495.558C876.362,495.558 877.744,632.854 743.195,663.49L715.141,607.127C715.141,607.127 812.636,616.558 820.136,495.558L876.362,495.558Z" style="fill:rgb(228,58,37);fill-rule:nonzero;"/>
+        <path d="M779.167,635.591C758.917,586.649 693.572,567.218 633.216,592.191C580.09,614.172 548.579,663.223 555.592,708.036C597.538,707.384 642.532,704.665 686.328,698.318C686.328,698.318 660.491,740.081 622.471,776.529C648.037,783.128 677.854,781.297 706.547,769.425C766.904,744.452 799.417,684.532 779.167,635.591Z" style="fill:rgb(228,58,37);fill-rule:nonzero;"/>
+        <path d="M404.746,695.984C404.746,695.984 459.949,703.279 535.416,705.14C542.026,657.629 506.036,607.348 448.615,587.897C385.177,566.409 319.626,590.689 302.201,642.129C284.776,693.569 322.077,752.689 385.515,774.178C413.636,783.704 442.168,784.227 466.744,777.385C429.833,740.88 404.746,695.984 404.746,695.984Z" style="fill:rgb(228,58,37);fill-rule:nonzero;"/>
+    </g>
+</svg>

test/text.pgp

@@ -0,0 +1,3 @@
+-----BEGIN PGP MESSAGE-----
+-----END PGP MESSAGE-----
+

web/Cargo.toml

@@ -1,22 +1,51 @@
 [package]
 name = "omegaupload-web"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+crate-type = ["cdylib"]
 
 [dependencies]
-omegaupload-common = { path = "../common" }
+omegaupload-common = { path = "../common", features = ["wasm"] }
 # Enables wasm support
-getrandom = { version = "*", features = ["js"] }
+getrandom = { version = "0.2.7", features = ["js"] }
 
-anyhow = "1"
-bytes = "1"
-downcast-rs = "1"
-gloo-console = "0.1"
-http = "0.2"
-reqwest = { version = "0.11", default_features = false, features = ["tokio-rustls"] }
-web-sys = { version = "0.3", features = ["Request", "Window"] }
-yew = { version = "0.18", features = ["wasm-bindgen-futures"] }
-yew-router = "0.15"
-yewtil = "0.4"
+anyhow = "1.0.58"
+bytes = "1.2.0"
+byte-unit = "4.0.14"
+console_error_panic_hook = "0.1.7"
+gloo-console = "0.3"
+http = "0.2.8"
+js-sys = "0.3.59"
+mime_guess = "2.0.4"
+tree_magic_mini = { version = "3.0.3", features = ["with-gpl-data"] }
+serde = { version = "1.0.140", features = ["derive"] }
+serde-wasm-bindgen = { version = "0.6" }
+wasm-bindgen = { version = "0.2.82", features = ["serde-serialize"] }
+wasm-bindgen-futures = "0.4.32"
+zip = { version = "0.6.2", default-features = false, features = ["deflate"] }
+flate2 = "1.0.24"
+tar = "0.4.38"
+reqwest = "0.11"
+
+[dependencies.web-sys]
+version = "0.3.59"
+features = [
+  "BlobPropertyBag",
+  "TextDecoder",
+  "IdbFactory",
+  "IdbOpenDbRequest",
+  "IdbRequest",
+  "IdbDatabase",
+  "IdbObjectStore",
+  "IdbTransaction",
+  "IdbTransactionMode",
+  "IdbIndex",
+  "IdbIndexParameters",
+  "Event",
+  "EventTarget",
+  "Window",
+  "Performance",
+  "Location",
+]

web/LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
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+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
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+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
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+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
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+have designed this version of the GPL to prohibit the practice for those
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+stand ready to extend this provision to those domains in future versions
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+
+  Finally, every program is threatened constantly by software patents.
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+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
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+
+  "This License" refers to version 3 of the GNU General Public License.
+
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+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
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+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
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+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
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+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
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+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
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+  "Additional permissions" are terms that supplement the terms of this
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+
+  12. No Surrender of Others' Freedom.
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+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
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+
+  14. Revised Versions of this License.
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+be similar in spirit to the present version, but may differ in detail to
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+  If the Program specifies that a proxy can decide which future
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+  15. Disclaimer of Warranty.
+
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+
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+
+                     END OF TERMS AND CONDITIONS
+
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+
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+
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+
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+    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.
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+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

web/README.md

@@ -0,0 +1,10 @@
+Contains the codebase used for the frontend
+
+Notes on licensing:
+
+https://www.gnu.org/licenses/gpl-faq.html#AllCompatibility
+
+Because there is a statically linked in dependency on `shared-mime-types`, this
+crate MUST be under a GPLv2 or later license. This has been confirmed as of
+2021-10-24.
+

web/dist/index.html

@@ -1,41 +0,0 @@
-<!DOCTYPE html><html><head>
-  <meta charset="utf-8">
-  <title>Omegaupload</title>
-  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.3.1/styles/github-dark.min.css">
-  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.3.1/highlight.min.js"></script>
-  <style>
-    body {
-      margin: 0;
-    }
-  </style>
-
-<link rel="preload" href="/index-c5eae97b1d11880a_bg.wasm" as="fetch" type="application/wasm" crossorigin="">
-<link rel="modulepreload" href="/index-c5eae97b1d11880a.js"></head>
-
-<body><script type="module">import init from '/index-c5eae97b1d11880a.js';init('/index-c5eae97b1d11880a_bg.wasm');</script><script>(function () {
-    var url = 'ws://' + window.location.host + '/_trunk/ws';
-    var poll_interval = 5000;
-    var reload_upon_connect = () => {
-        window.setTimeout(
-            () => {
-                // when we successfully reconnect, we'll force a
-                // reload (since we presumably lost connection to
-                // trunk due to it being killed, so it will have
-                // rebuilt on restart)
-                var ws = new WebSocket(url);
-                ws.onopen = () => window.location.reload();
-                ws.onclose = reload_upon_connect;
-            },
-            poll_interval);
-    };
-
-    var ws = new WebSocket(url);
-    ws.onmessage = (ev) => {
-        const msg = JSON.parse(ev.data);
-        if (msg.reload) {
-            window.location.reload();
-        }
-    };
-    ws.onclose = reload_upon_connect;
-})()
-</script></body></html>

web/index.html

@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <meta charset="utf-8" />
-  <title>Omegaupload</title>
-  <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.3.1/styles/github-dark.min.css">
-  <script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/11.3.1/highlight.min.js"></script>
-  <style>
-    body {
-      margin: 0;
-    }
-  </style>
-</head>
-
-</html>

web/src/bg_encrypt.ts

@@ -0,0 +1,33 @@
+// OmegaUpload Web Frontend
+// Copyright (C) 2021  Edward Shen
+//
+// 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, either version 3 of the License, or
+// (at your option) any later version.
+//
+// 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 <https://www.gnu.org/licenses/>.
+
+import { encrypt_array_buffer } from '../pkg';
+
+interface BgData {
+  location: string,
+  data: any
+}
+
+addEventListener('message', (event: MessageEvent<BgData>) => {
+  let { location, data } = event.data;
+  console.log('[js-worker] Sending data to rust in a worker thread...');
+  encrypt_array_buffer(location, data).then(url => {
+    console.log("[js-worker] Encryption done.");
+    postMessage(url);
+  }).catch(e => console.error(e));
+})
+
+postMessage("init");

web/src/decrypt.rs

@@ -0,0 +1,249 @@
+// OmegaUpload Web Frontend
+// Copyright (C) 2021  Edward Shen
+//
+// 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, either version 3 of the License, or
+// (at your option) any later version.
+//
+// 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 <https://www.gnu.org/licenses/>.
+
+use std::io::Cursor;
+use std::sync::Arc;
+
+use gloo_console::log;
+use js_sys::{Array, Uint8Array};
+use omegaupload_common::crypto::{open_in_place, Error, Key};
+use omegaupload_common::secrecy::{Secret, SecretVec};
+use serde::Serialize;
+use wasm_bindgen::JsCast;
+use web_sys::{Blob, BlobPropertyBag};
+
+#[derive(Clone, Serialize)]
+pub struct ArchiveMeta {
+    name: String,
+    file_size: u64,
+}
+
+#[derive(Clone)]
+pub enum DecryptedData {
+    String(Arc<String>),
+    Blob(Arc<Blob>),
+    Image(Arc<Blob>, usize),
+    Audio(Arc<Blob>),
+    Video(Arc<Blob>),
+    Archive(Arc<Blob>, Vec<ArchiveMeta>),
+}
+
+fn now() -> f64 {
+    web_sys::window()
+        .expect("should have a Window")
+        .performance()
+        .expect("should have a Performance")
+        .now()
+}
+
+pub struct MimeType(pub String);
+
+pub fn decrypt(
+    mut container: Vec<u8>,
+    key: &Secret<Key>,
+    maybe_password: Option<SecretVec<u8>>,
+    name_hint: Option<&str>,
+) -> Result<(DecryptedData, MimeType), Error> {
+    open_in_place(&mut container, key, maybe_password)?;
+
+    let mime_type = guess_mime_type(name_hint, &container);
+    log!("[rs] Mime type:", mime_type);
+
+    log!("[rs] Blob conversion started.");
+    let start = now();
+    let blob_chunks = Array::new_with_length(container.chunks(65536).len().try_into().unwrap());
+    for (i, chunk) in container.chunks(65536).enumerate() {
+        let array = Uint8Array::new_with_length(chunk.len().try_into().unwrap());
+        array.copy_from(chunk);
+        blob_chunks.set(i.try_into().unwrap(), array.dyn_into().unwrap());
+    }
+    let mut blob_props = BlobPropertyBag::new();
+    blob_props.type_(mime_type);
+    let blob = Arc::new(
+        Blob::new_with_u8_array_sequence_and_options(blob_chunks.dyn_ref().unwrap(), &blob_props)
+            .unwrap(),
+    );
+
+    log!(format!(
+        "[rs] Blob conversion completed in {}ms",
+        now() - start
+    ));
+
+    let data = match container.content_type() {
+        ContentType::Text => DecryptedData::String(Arc::new(
+            // SAFETY: ContentType::Text is guaranteed to be valid UTF-8.
+            unsafe { String::from_utf8_unchecked(container) },
+        )),
+        ContentType::Image => DecryptedData::Image(blob, container.len()),
+        ContentType::Audio => DecryptedData::Audio(blob),
+        ContentType::Video => DecryptedData::Video(blob),
+        ContentType::ZipArchive => handle_zip_archive(blob, container),
+        ContentType::Gzip => handle_gzip(blob, container),
+        ContentType::Unknown => DecryptedData::Blob(blob),
+    };
+
+    Ok((data, MimeType(mime_type.to_owned())))
+}
+
+fn handle_zip_archive(blob: Arc<Blob>, container: Vec<u8>) -> DecryptedData {
+    let mut entries = vec![];
+    let cursor = Cursor::new(container);
+    if let Ok(mut zip) = zip::ZipArchive::new(cursor) {
+        for i in 0..zip.len() {
+            match zip.by_index(i) {
+                Ok(file) => entries.push(ArchiveMeta {
+                    name: file.name().to_string(),
+                    file_size: file.size(),
+                }),
+                Err(err) => match err {
+                    zip::result::ZipError::UnsupportedArchive(s) => {
+                        log!("Unsupported: ", s.to_string());
+                    }
+                    _ => {
+                        log!(format!("Error: {err}"));
+                    }
+                },
+            }
+        }
+    }
+
+    entries.sort_by(|a, b| a.name.cmp(&b.name));
+    DecryptedData::Archive(blob, entries)
+}
+
+fn handle_gzip(blob: Arc<Blob>, container: Vec<u8>) -> DecryptedData {
+    let mut entries = vec![];
+    let cursor = Cursor::new(container);
+    let gzip_dec = flate2::read::GzDecoder::new(cursor);
+    let mut archive = tar::Archive::new(gzip_dec);
+    if let Ok(files) = archive.entries() {
+        for file in files.flatten() {
+            let file_path = if let Ok(file_path) = file.path() {
+                file_path.display().to_string()
+            } else {
+                "<Invalid utf-8 path>".to_string()
+            };
+            entries.push(ArchiveMeta {
+                name: file_path,
+                file_size: file.size(),
+            });
+        }
+    }
+    if entries.is_empty() {
+        DecryptedData::Blob(blob)
+    } else {
+        DecryptedData::Archive(blob, entries)
+    }
+}
+
+fn guess_mime_type(name_hint: Option<&str>, data: &[u8]) -> &'static str {
+    if let Some(name) = name_hint {
+        let guesses = mime_guess::from_path(name);
+        if let Some(mime_type) = guesses.first_raw() {
+            // Found at least one, but generally speaking this crate only
+            // uses authoritative sources (RFCs), so generally speaking
+            // there's only one association, and multiple are due to legacy
+            // support. As a result, we can probably just get the first one.
+            log!("[rs] Mime type inferred from extension.");
+            return mime_type;
+        }
+        log!("[rs] No mime type found for extension, falling back to introspection.");
+    }
+    tree_magic_mini::from_u8(data)
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
+enum ContentType {
+    Text,
+    Image,
+    Audio,
+    Video,
+    ZipArchive,
+    Gzip,
+    Unknown,
+}
+
+trait ContentTypeExt {
+    fn mime_type(&self) -> &str;
+    fn content_type(&self) -> ContentType;
+}
+
+impl<T: AsRef<[u8]>> ContentTypeExt for T {
+    fn mime_type(&self) -> &str {
+        tree_magic_mini::from_u8(self.as_ref())
+    }
+
+    fn content_type(&self) -> ContentType {
+        let mime_type = self.mime_type();
+        // check image first; tree magic match_u8 matches SVGs as plain text
+        if mime_type.starts_with("image/")
+            // application/x-riff is WebP
+            || mime_type == "application/x-riff"
+        {
+            ContentType::Image
+        } else if tree_magic_mini::match_u8("text/plain", self.as_ref()) {
+            if std::str::from_utf8(self.as_ref()).is_ok() {
+                ContentType::Text
+            } else {
+                ContentType::Unknown
+            }
+        } else if mime_type.starts_with("audio/") {
+            ContentType::Audio
+        } else if mime_type.starts_with("video/")
+            // application/x-matroska is mkv
+            || mime_type == "application/x-matroska"
+        {
+            ContentType::Video
+        } else if mime_type == "application/zip" {
+            ContentType::ZipArchive
+        } else if mime_type == "application/gzip" {
+            ContentType::Gzip
+        } else {
+            ContentType::Unknown
+        }
+    }
+}
+
+#[cfg(test)]
+mod content_type {
+    use super::*;
+
+    macro_rules! test_content_type {
+        ($($name:ident, $path:literal, $type:expr),*) => {
+            $(
+                #[test]
+                fn $name() {
+                    let data = include_bytes!(concat!("../../test/", $path));
+                    assert_eq!(data.content_type(), $type);
+                }
+            )*
+        };
+    }
+
+    test_content_type!(license_is_text, "LICENSE.md", ContentType::Text);
+    test_content_type!(code_is_text, "code.rs", ContentType::Text);
+    test_content_type!(patch_is_text, "0000-test-patch.patch", ContentType::Text);
+    test_content_type!(png_is_image, "image.png", ContentType::Image);
+    test_content_type!(webp_is_image, "image.webp", ContentType::Image);
+    test_content_type!(svg_is_image, "image.svg", ContentType::Image);
+    test_content_type!(mp3_is_audio, "music.mp3", ContentType::Audio);
+    test_content_type!(mp4_is_video, "movie.mp4", ContentType::Video);
+    test_content_type!(mkv_is_video, "movie.mkv", ContentType::Video);
+    test_content_type!(zip_is_zip, "archive.zip", ContentType::ZipArchive);
+    test_content_type!(gzip_is_gzip, "image.png.gz", ContentType::Gzip);
+    test_content_type!(binary_is_unknown, "omegaupload", ContentType::Unknown);
+    test_content_type!(pgp_is_text, "text.pgp", ContentType::Text);
+}

web/src/idb_object.rs

@@ -0,0 +1,119 @@
+// OmegaUpload Web Frontend
+// Copyright (C) 2021  Edward Shen
+//
+// 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, either version 3 of the License, or
+// (at your option) any later version.
+//
+// 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 <https://www.gnu.org/licenses/>.
+
+use std::{hint::unreachable_unchecked, marker::PhantomData};
+
+use gloo_console::log;
+use js_sys::{Array, JsString, Object};
+use wasm_bindgen::JsValue;
+
+pub struct IdbObject<State>(Array, PhantomData<State>);
+
+impl<State: IdbObjectState> IdbObject<State> {
+    fn add_tuple<NextState>(self, key: &str, value: &JsValue) -> IdbObject<NextState> {
+        let array = Array::new();
+        array.push(&JsString::from(key));
+        array.push(value);
+        self.0.push(&array);
+        IdbObject(self.0, PhantomData)
+    }
+}
+
+impl From<IdbObject<Ready>> for Object {
+    fn from(db_object: IdbObject<Ready>) -> Self {
+        match Self::from_entries(db_object.as_ref()) {
+            Ok(o) => o,
+            // SAFETY: IdbObject maintains the invariant that it can eventually
+            // be constructed into a JS object.
+            _ => {
+                log!("IdbObject invariant violated?!");
+                unsafe { unreachable_unchecked() }
+            }
+        }
+    }
+}
+
+impl IdbObject<NeedsType> {
+    pub fn new() -> Self {
+        Self(Array::new(), PhantomData)
+    }
+
+    pub fn archive(self) -> IdbObject<NeedsExpiration> {
+        self.add_tuple("type", &JsString::from("archive"))
+    }
+
+    pub fn video(self) -> IdbObject<NeedsExpiration> {
+        self.add_tuple("type", &JsString::from("video"))
+    }
+
+    pub fn audio(self) -> IdbObject<NeedsExpiration> {
+        self.add_tuple("type", &JsString::from("audio"))
+    }
+
+    pub fn image(self) -> IdbObject<NeedsExpiration> {
+        self.add_tuple("type", &JsString::from("image"))
+    }
+
+    pub fn blob(self) -> IdbObject<NeedsExpiration> {
+        self.add_tuple("type", &JsString::from("blob"))
+    }
+
+    pub fn string(self) -> IdbObject<NeedsExpiration> {
+        self.add_tuple("type", &JsString::from("string"))
+    }
+}
+
+impl Default for IdbObject<NeedsType> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl IdbObject<NeedsExpiration> {
+    pub fn expiration_text(self, expires: &str) -> IdbObject<NeedsData> {
+        self.add_tuple("expiration", &JsString::from(expires))
+    }
+}
+
+impl IdbObject<NeedsData> {
+    pub fn data(self, value: &JsValue) -> IdbObject<Ready> {
+        self.add_tuple("data", value)
+    }
+}
+
+impl IdbObject<Ready> {
+    pub fn extra(self, key: &str, value: impl Into<JsValue>) -> Self {
+        self.add_tuple(key, &value.into())
+    }
+}
+
+impl AsRef<JsValue> for IdbObject<Ready> {
+    fn as_ref(&self) -> &JsValue {
+        self.0.as_ref()
+    }
+}
+
+macro_rules! impl_idb_object_state {
+    ($($ident:ident),*) => {
+        pub trait IdbObjectState {}
+        $(
+            pub enum $ident {}
+            impl IdbObjectState for $ident {}
+        )*
+    };
+}
+
+impl_idb_object_state!(NeedsType, NeedsExpiration, NeedsData, Ready);

web/src/index.html

@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="utf-8" />
+  <title>Omegaupload</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+</head>
+
+</html>

web/src/index.js

@@ -0,0 +1,6 @@
+import { start } from '../pkg';
+import './main.scss';
+
+start();
+
+window.addEventListener("hashchange", () => location.reload());

web/src/lib.rs

@@ -0,0 +1,360 @@
+#![warn(clippy::nursery, clippy::pedantic)]
+
+// OmegaUpload Web Frontend
+// Copyright (C) 2021  Edward Shen
+//
+// 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, either version 3 of the License, or
+// (at your option) any later version.
+//
+// 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 <https://www.gnu.org/licenses/>.
+
+use std::str::FromStr;
+
+use anyhow::{anyhow, bail, Context, Result};
+use byte_unit::{n_mib_bytes, Byte};
+use decrypt::{DecryptedData, MimeType};
+use gloo_console::{error, log};
+use http::uri::PathAndQuery;
+use http::{StatusCode, Uri};
+use js_sys::{Array, JsString, Object};
+use omegaupload_common::base64;
+use omegaupload_common::crypto::seal_in_place;
+use omegaupload_common::crypto::{Error as CryptoError, Key};
+use omegaupload_common::fragment::Builder;
+use omegaupload_common::secrecy::{ExposeSecret, Secret, SecretString, SecretVec};
+use omegaupload_common::{Expiration, PartialParsedUrl, Url};
+use wasm_bindgen::prelude::{wasm_bindgen, Closure};
+use wasm_bindgen::{JsCast, JsValue};
+use wasm_bindgen_futures::spawn_local;
+use web_sys::{Event, IdbObjectStore, IdbOpenDbRequest, IdbTransactionMode, Location, Window};
+
+use crate::decrypt::decrypt;
+use crate::idb_object::IdbObject;
+use crate::util::as_idb_db;
+
+mod decrypt;
+mod idb_object;
+mod util;
+
+const DOWNLOAD_SIZE_LIMIT: u128 = n_mib_bytes!(500);
+
+#[wasm_bindgen(raw_module = "../src/render")]
+extern "C" {
+    #[wasm_bindgen(js_name = loadFromDb)]
+    pub fn load_from_db(mime_type: JsString, name: Option<JsString>, language: Option<JsString>);
+    #[wasm_bindgen(js_name = renderMessage)]
+    pub fn render_message(message: JsString);
+    #[wasm_bindgen(js_name = createUploadUi)]
+    pub fn create_upload_ui();
+}
+
+fn window() -> Window {
+    web_sys::window().expect("Failed to get a reference of the window")
+}
+
+fn location() -> Location {
+    window().location()
+}
+
+fn open_idb() -> Result<IdbOpenDbRequest> {
+    window()
+        .indexed_db()
+        .unwrap()
+        .context("Missing browser idb impl")?
+        .open("omegaupload")
+        .map_err(|_| anyhow!("Failed to open idb"))
+}
+
+#[wasm_bindgen]
+#[allow(clippy::missing_panics_doc)]
+pub fn start() {
+    std::panic::set_hook(Box::new(console_error_panic_hook::hook));
+
+    if location().pathname().unwrap() == "/" {
+        create_upload_ui();
+        return;
+    }
+
+    render_message("Loading paste...".into());
+
+    let url = String::from(location().to_string());
+    let request_uri = {
+        let mut uri_parts = url.parse::<Uri>().unwrap().into_parts();
+        if let Some(parts) = uri_parts.path_and_query.as_mut() {
+            *parts = PathAndQuery::from_str(&format!("/api{}", parts.path())).unwrap();
+        }
+        Uri::from_parts(uri_parts).unwrap()
+    };
+
+    let (
+        key,
+        PartialParsedUrl {
+            needs_password,
+            name,
+            language,
+            ..
+        },
+    ) = {
+        let fragment = if let Some(fragment) = url.split_once('#').map(|(_, fragment)| fragment) {
+            if fragment.is_empty() {
+                error!("Key is missing in url; bailing.");
+                render_message("Invalid paste link: Missing metadata.".into());
+                return;
+            }
+            fragment
+        } else {
+            error!("Key is missing in url; bailing.");
+            render_message("Invalid paste link: Missing metadata.".into());
+            return;
+        };
+
+        let mut partial_parsed_url = match PartialParsedUrl::try_from(fragment) {
+            Ok(partial_parsed_url) => partial_parsed_url,
+            Err(e) => {
+                error!("Failed to parse text fragment; bailing.");
+                render_message(format!("Invalid paste link: {e}").into());
+                return;
+            }
+        };
+
+        let key = if let Some(key) = partial_parsed_url.decryption_key.take() {
+            key
+        } else {
+            error!("Key is missing in url; bailing.");
+            render_message("Invalid paste link: Missing decryption key.".into());
+            return;
+        };
+
+        (key, partial_parsed_url)
+    };
+
+    let password = if needs_password {
+        loop {
+            let pw = window().prompt_with_message("A password is required to decrypt this paste:");
+
+            match pw {
+                // Ok button was entered.
+                Ok(Some(password)) if !password.is_empty() => {
+                    break Some(SecretVec::new(password.into_bytes()));
+                }
+                // Empty message was entered.
+                Ok(Some(_)) => (),
+                // Cancel button was entered.
+                Ok(None) => {
+                    render_message("This paste requires a password.".into());
+                    return;
+                }
+                e => {
+                    render_message("Internal error occurred.".into());
+                    error!(format!("Error occurred at pw prompt: {e:?}"));
+                    return;
+                }
+            }
+        }
+    } else {
+        None
+    };
+
+    spawn_local(async move {
+        if let Err(e) = fetch_resources(request_uri, key, password, name, language).await {
+            log!(e.to_string());
+        }
+    });
+}
+
+#[wasm_bindgen]
+#[allow(clippy::future_not_send)]
+pub async fn encrypt_array_buffer(location: String, data: Vec<u8>) -> Result<JsString, JsString> {
+    do_encrypt(location, data).await.map_err(|e| {
+        log!(format!("[rs] Error encrypting array buffer: {}", e));
+        JsString::from(e.to_string())
+    })
+}
+
+#[allow(clippy::future_not_send)]
+async fn do_encrypt(location: String, mut data: Vec<u8>) -> Result<JsString> {
+    let (data, key) = {
+        let enc_key = seal_in_place(&mut data, None)?;
+        let key = SecretString::new(base64::encode(&enc_key.expose_secret().as_ref()));
+        (data, key)
+    };
+
+    let mut url = Url::from_str(&location)?;
+    let fragment = Builder::new(key);
+
+    let short_code = reqwest::Client::new()
+        .post(url.as_ref())
+        .body(data)
+        .send()
+        .await?
+        .text()
+        .await?;
+
+    url.set_path(&short_code);
+    url.set_fragment(Some(fragment.build().expose_secret()));
+
+    Ok(JsString::from(url.as_ref()))
+}
+
+#[allow(clippy::future_not_send)]
+async fn fetch_resources(
+    request_uri: Uri,
+    key: Secret<Key>,
+    password: Option<SecretVec<u8>>,
+    name: Option<String>,
+    language: Option<String>,
+) -> Result<()> {
+    match reqwest::Client::new()
+        .get(&request_uri.to_string())
+        .send()
+        .await
+    {
+        Ok(resp) if resp.status() == StatusCode::OK => {
+            let expires = resp
+                .headers()
+                .get(http::header::EXPIRES)
+                .and_then(|header| Expiration::try_from(header).ok())
+                .map_or_else(
+                    || "This item does not expire.".to_string(),
+                    |expires| expires.to_string(),
+                );
+
+            let data = resp
+                .bytes()
+                .await
+                .expect("to get raw bytes from a response")
+                .to_vec();
+
+            if data.len() as u128 > DOWNLOAD_SIZE_LIMIT {
+                render_message("The paste is too large to decrypt from the web browser. You must use the CLI tool to download this paste.".into());
+                return Ok(());
+            }
+
+            let (decrypted, mimetype) = match decrypt(data, &key, password, name.as_deref()) {
+                Ok(data) => data,
+                Err(e) => {
+                    let msg = match e {
+                        CryptoError::Password => "The provided password was incorrect.",
+                        CryptoError::SecretKey => "The secret key in the URL was incorrect.",
+                        ref e => {
+                            log!(format!("Bad kdf or corrupted blob: {e}"));
+                            "An internal error occurred."
+                        }
+                    };
+
+                    render_message(JsString::from(msg));
+                    bail!(e);
+                }
+            };
+            let db_open_req = open_idb()?;
+
+            let on_success = Closure::once(Box::new(move |event| {
+                on_success(&event, &decrypted, mimetype, &expires, name, language);
+            }));
+
+            db_open_req.set_onsuccess(Some(on_success.into_js_value().unchecked_ref()));
+            db_open_req.set_onerror(Some(
+                Closure::once(Box::new(|e: Event| log!(e)))
+                    .into_js_value()
+                    .unchecked_ref(),
+            ));
+            let on_upgrade = Closure::once(Box::new(move |event: Event| {
+                let db = as_idb_db(&event);
+                let _obj_store = db.create_object_store("decrypted data").unwrap();
+            }));
+            db_open_req.set_onupgradeneeded(Some(on_upgrade.into_js_value().unchecked_ref()));
+        }
+        Ok(resp) if resp.status() == StatusCode::NOT_FOUND => {
+            render_message("Either the paste was burned or it never existed.".into());
+        }
+        Ok(resp) if resp.status() == StatusCode::BAD_REQUEST => {
+            render_message("Invalid paste URL.".into());
+        }
+        Ok(err) => {
+            render_message(err.status().as_str().into());
+        }
+        Err(err) => {
+            render_message(format!("{err}").into());
+        }
+    }
+
+    Ok(())
+}
+
+fn on_success(
+    event: &Event,
+    decrypted: &DecryptedData,
+    mimetype: MimeType,
+    expires: &str,
+    name: Option<String>,
+    language: Option<String>,
+) {
+    let transaction: IdbObjectStore = as_idb_db(event)
+        .transaction_with_str_and_mode("decrypted data", IdbTransactionMode::Readwrite)
+        .unwrap()
+        .object_store("decrypted data")
+        .unwrap();
+
+    let decrypted_object = match decrypted {
+        DecryptedData::String(s) => IdbObject::new()
+            .string()
+            .expiration_text(expires)
+            .data(&JsValue::from_str(s)),
+        DecryptedData::Blob(blob) => IdbObject::new().blob().expiration_text(expires).data(blob),
+        DecryptedData::Image(blob, size) => IdbObject::new()
+            .image()
+            .expiration_text(expires)
+            .data(blob)
+            .extra(
+                "file_size",
+                Byte::from_bytes(*size as u128)
+                    .get_appropriate_unit(true)
+                    .to_string(),
+            ),
+        DecryptedData::Audio(blob) => IdbObject::new().audio().expiration_text(expires).data(blob),
+        DecryptedData::Video(blob) => IdbObject::new().video().expiration_text(expires).data(blob),
+        DecryptedData::Archive(blob, entries) => IdbObject::new()
+            .archive()
+            .expiration_text(expires)
+            .data(blob)
+            .extra(
+                "entries",
+                JsValue::from(
+                    entries
+                        .iter()
+                        .filter_map(|x| serde_wasm_bindgen::to_value(x).ok())
+                        .collect::<Array>(),
+                ),
+            ),
+    };
+
+    let put_action = transaction
+        .put_with_key(
+            &Object::from(decrypted_object),
+            &JsString::from(location().pathname().unwrap()),
+        )
+        .unwrap();
+    put_action.set_onsuccess(Some(
+        Closure::once(Box::new(|| {
+            log!("[rs] Successfully inserted encrypted item into storage.");
+            let name = name.map(JsString::from);
+            let language = language.map(JsString::from);
+            load_from_db(JsString::from(mimetype.0), name, language);
+        }))
+        .into_js_value()
+        .unchecked_ref(),
+    ));
+    put_action.set_onerror(Some(
+        Closure::once(Box::new(|e: Event| log!(e)))
+            .into_js_value()
+            .unchecked_ref(),
+    ));
+}

web/src/main.rs

@@ -1,335 +0,0 @@
-use std::convert::TryFrom;
-use std::fmt::Debug;
-use std::str::FromStr;
-
-use anyhow::{anyhow, bail};
-use bytes::Bytes;
-use downcast_rs::{impl_downcast, Downcast};
-use http::uri::PathAndQuery;
-use http::{StatusCode, Uri};
-use omegaupload_common::crypto::{open, Key, Nonce};
-use omegaupload_common::PartialParsedUrl;
-use yew::format::Nothing;
-use yew::utils::window;
-use yew::Properties;
-use yew::{html, Component, ComponentLink, Html, ShouldRender};
-use yew_router::router::Router;
-use yew_router::Switch;
-use yewtil::future::LinkFuture;
-
-fn main() {
-    yew::start_app::<App>();
-}
-
-struct App;
-impl Component for App {
-    type Message = ();
-    type Properties = ();
-
-    fn create(_: Self::Properties, _: ComponentLink<Self>) -> Self {
-        Self
-    }
-
-    fn update(&mut self, _: Self::Message) -> ShouldRender {
-        false
-    }
-
-    fn change(&mut self, _props: Self::Properties) -> ShouldRender {
-        false
-    }
-
-    fn view(&self) -> Html {
-        html! {
-            <Router<Route> render={Router::render(render_route)} />
-        }
-    }
-}
-
-#[derive(Clone, Debug, Switch)]
-enum Route {
-    #[to = "/!"]
-    Index,
-    #[rest]
-    Path(String),
-}
-
-fn render_route(route: Route) -> Html {
-    match route {
-        Route::Index => html! {
-            <main>
-                <p>{ "Hello world" }</p>
-            </main>
-        },
-        Route::Path(_) => html! {
-            <main>
-                <Paste/>
-            </main>
-        },
-    }
-}
-
-struct Paste {
-    state: Box<dyn PasteState>,
-}
-
-impl Component for Paste {
-    type Message = Box<dyn PasteState>;
-
-    type Properties = ();
-
-    fn create(_: Self::Properties, link: ComponentLink<Self>) -> Self {
-        let url = String::from(window().location().to_string());
-        let request_uri = {
-            let mut uri_parts = url.parse::<Uri>().unwrap().into_parts();
-            uri_parts.path_and_query.as_mut().map(|parts| {
-                *parts = PathAndQuery::from_str(&format!("/api{}", parts.path())).unwrap()
-            });
-            Uri::from_parts(uri_parts).unwrap()
-        };
-
-        let link_clone = link.clone();
-        link.send_future(async move {
-            match reqwest::get(&request_uri.to_string()).await {
-                Ok(resp) if resp.status() == StatusCode::OK => {
-                    let partial = match resp.bytes().await {
-                        Ok(bytes) => PastePartial::new(
-                            bytes,
-                            url.split_once('#')
-                                .map(|(_, fragment)| PartialParsedUrl::from(fragment))
-                                .unwrap_or_default(),
-                            link_clone,
-                        ),
-                        Err(e) => {
-                            return Box::new(PasteError(anyhow!("Got resp error: {}", e)))
-                                as Box<dyn PasteState>
-                        }
-                    };
-
-                    if let Ok(completed) = PasteComplete::try_from(partial.clone()) {
-                        Box::new(completed) as Box<dyn PasteState>
-                    } else {
-                        Box::new(partial) as Box<dyn PasteState>
-                    }
-                }
-                Ok(err) => Box::new(PasteError(anyhow!("Got resp error: {}", err.status())))
-                    as Box<dyn PasteState>,
-                Err(err) => {
-                    Box::new(PasteError(anyhow!("Got resp error: {}", err))) as Box<dyn PasteState>
-                }
-            }
-        });
-        Self {
-            state: Box::new(PasteLoading),
-        }
-    }
-
-    fn update(&mut self, msg: Self::Message) -> ShouldRender {
-        self.state = msg;
-        true
-    }
-
-    fn change(&mut self, _props: Self::Properties) -> ShouldRender {
-        false
-    }
-
-    fn view(&self) -> Html {
-        if self.state.is::<PasteLoading>() {
-            return html! {
-                <p>{ "loading" }</p>
-            };
-        }
-
-        if self.state.is::<PasteNotFound>() {
-            return html! {
-                <p>{ "Either the paste has been burned or one never existed." }</p>
-            };
-        }
-
-        if let Some(error) = self.state.downcast_ref::<PasteError>() {
-            return html! {
-                <p>{ error.0.to_string() }</p>
-            };
-        }
-
-        if let Some(partial_paste) = self.state.downcast_ref::<PastePartial>() {
-            return partial_paste.view();
-        }
-
-        if let Some(paste) = self.state.downcast_ref::<PasteComplete>() {
-            return paste.view();
-        }
-
-        html! {
-            "An internal error occurred: client is in unknown state!"
-        }
-    }
-}
-
-struct PasteLoading;
-struct PasteNotFound;
-
-struct PasteError(anyhow::Error);
-
-#[derive(Properties, Clone, Debug)]
-struct PastePartial {
-    parent: ComponentLink<Paste>,
-    data: Option<Bytes>,
-    key: Option<Key>,
-    nonce: Option<Nonce>,
-    password: Option<Key>,
-    needs_pw: bool,
-}
-
-#[derive(Properties, Clone)]
-struct PasteComplete {
-    data: Bytes,
-    key: Key,
-    nonce: Nonce,
-    password: Option<Key>,
-}
-
-trait PasteState: Downcast {}
-impl_downcast!(PasteState);
-impl PasteState for PasteLoading {}
-impl PasteState for PasteNotFound {}
-impl PasteState for PasteError {}
-impl PasteState for PastePartial {}
-impl PasteState for PasteComplete {}
-
-impl PastePartial {
-    fn new(
-        resp: Bytes,
-        partial_parsed_url: PartialParsedUrl,
-        parent: ComponentLink<Paste>,
-    ) -> Self {
-        Self {
-            parent,
-            data: Some(resp),
-            key: partial_parsed_url.decryption_key,
-            nonce: partial_parsed_url.nonce,
-            password: None,
-            needs_pw: partial_parsed_url.needs_password,
-        }
-    }
-}
-
-enum PartialPasteMessage {
-    DecryptionKey(Key),
-    Nonce(Nonce),
-    Password(Key),
-}
-
-impl Component for PastePartial {
-    type Message = PartialPasteMessage;
-
-    type Properties = Self;
-
-    fn create(props: Self::Properties, _: ComponentLink<Self>) -> Self {
-        props
-    }
-
-    fn update(&mut self, msg: Self::Message) -> ShouldRender {
-        match msg {
-            PartialPasteMessage::DecryptionKey(key) => self.key = Some(key),
-            PartialPasteMessage::Nonce(nonce) => self.nonce = Some(nonce),
-            PartialPasteMessage::Password(password) => self.password = Some(password),
-        }
-
-        match (self.data.clone(), self.key, self.nonce, self.password) {
-            (Some(data), Some(key), Some(nonce), Some(password)) if self.needs_pw => {
-                self.parent.callback(move |Nothing| {
-                    Box::new(PasteComplete::new(data.clone(), key, nonce, Some(password)))
-                        as Box<dyn PasteState>
-                });
-            }
-            (Some(data), Some(key), Some(nonce), None) if !self.needs_pw => {
-                self.parent.callback(move |Nothing| {
-                    Box::new(PasteComplete::new(data.clone(), key, nonce, None))
-                        as Box<dyn PasteState>
-                });
-            }
-            _ => (),
-        }
-
-        // parent should re-render so this element should be dropped.
-        false
-    }
-
-    fn change(&mut self, _props: Self::Properties) -> ShouldRender {
-        false
-    }
-
-    fn view(&self) -> Html {
-        html! {
-            "got partial data"
-        }
-    }
-}
-
-impl TryFrom<PastePartial> for PasteComplete {
-    type Error = anyhow::Error;
-
-    fn try_from(partial: PastePartial) -> Result<Self, Self::Error> {
-        match partial {
-            PastePartial {
-                data: Some(data),
-                key: Some(key),
-                nonce: Some(nonce),
-                password: Some(password),
-                needs_pw: true,
-                ..
-            } => Ok(PasteComplete {
-                data,
-                key,
-                nonce,
-                password: Some(password),
-            }),
-            PastePartial {
-                data: Some(data),
-                key: Some(key),
-                nonce: Some(nonce),
-                needs_pw: false,
-                ..
-            } => Ok(PasteComplete {
-                data,
-                key,
-                nonce,
-                password: None,
-            }),
-            _ => bail!("missing field"),
-        }
-    }
-}
-
-impl PasteComplete {
-    fn new(data: Bytes, key: Key, nonce: Nonce, password: Option<Key>) -> Self {
-        Self {
-            data,
-            key,
-            nonce,
-            password,
-        }
-    }
-
-    fn view(&self) -> Html {
-        let stage_one = if let Some(password) = self.password {
-            open(&self.data, &self.nonce.increment(), &password).unwrap()
-        } else {
-            self.data.to_vec()
-        };
-
-        let decrypted = open(&stage_one, &self.nonce, &self.key).unwrap();
-
-        if let Ok(str) = String::from_utf8(decrypted) {
-            html! {
-                <>
-                <pre><code>{str}</code></pre>
-
-                <script>{ "hljs.highlightAll();" }</script>
-                </>
-            }
-        } else {
-            html! { "binary" }
-        }
-    }
-}

web/src/main.scss

@@ -0,0 +1,144 @@
+// OmegaUpload Web Frontend
+// Copyright (C) 2021  Edward Shen
+//
+// 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, either version 3 of the License, or
+// (at your option) any later version.
+//
+// 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 <https://www.gnu.org/licenses/>.
+
+@use 'node_modules/highlight.js/styles/github-dark.css';
+
+$padding: 1em;
+
+@font-face {
+  font-family: "Mplus Code";
+  src: url("../vendor/MPLUS_FONTS/fonts/ttf/MPLUSCodeLatin[wdth,wght].ttf") format("truetype");
+}
+
+body {
+  background-color: #404040;
+  margin: 0;
+}
+
+.unselectable {
+  user-select: none;
+}
+
+hr {
+  @extend .hljs;
+  margin: $padding 0;
+}
+
+main {
+  display: inline-flex;
+  min-width: 100%;
+  max-width: 100%;
+  justify-content: center;
+}
+
+th {
+  font-weight: normal;
+}
+
+.paste {
+  @extend .hljs;
+  border-radius: $padding;
+  margin: $padding;
+  padding: 2 * $padding;
+  box-shadow: 0 0 $padding black;
+  min-width: 120ch;
+}
+
+.hljs {
+  font-family: 'Mplus Code', sans-serif;
+}
+
+.align-right {
+  text-align: right;
+}
+
+.hljs-ln td.hljs-ln-numbers {
+  @extend .align-right;
+  padding-right: $padding;
+}
+
+.centered {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+}
+
+.fullscreen {
+  min-height: 100vh;
+  min-width: 100vw;
+  margin: 0;
+}
+
+.display-anyways {
+  margin-top: 4em;
+  text-decoration: underline;
+  cursor: pointer;
+}
+
+img,
+audio,
+video {
+  border-radius: $padding;
+  margin-bottom: $padding;
+  max-height: 75vh;
+  max-width: 75vw;
+}
+
+textarea {
+  @extend .paste;
+  height: 75vh;
+  border-color: white;
+}
+
+.primary {
+  @extend .hljs;
+}
+
+.archive {
+  &-table {
+    width: 100%;
+  }
+
+  &-file-size {
+    @extend .align-right;
+    padding-left: $padding;
+  }
+}
+
+.button {
+  @extend .hljs;
+
+  font-size: 16px;
+  text-decoration: underline;
+  border: none;
+
+  &:hover {
+    cursor: pointer;
+  }
+}
+
+.file-upload {
+  @extend .button;
+
+  input {
+    display: none;
+  }
+}
+
+.text-upload {
+  @extend .button;
+}

web/src/render.tsx

@@ -0,0 +1,363 @@
+// OmegaUpload Web Frontend
+// Copyright (C) 2021  Edward Shen
+//
+// 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, either version 3 of the License, or
+// (at your option) any later version.
+//
+// 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 <https://www.gnu.org/licenses/>.
+
+import ReactDom from 'react-dom';
+import React, { useState } from 'react';
+
+let hljs;
+if (typeof WorkerGlobalScope === 'undefined' || !(self instanceof WorkerGlobalScope)) {
+  hljs = require('highlight.js');
+  (window as any).hljs = hljs;
+  require('highlightjs-line-numbers.js');
+}
+
+
+const FileForm = () => {
+  const handleChange = (event: React.ChangeEvent<HTMLInputElement>) => {
+    let file = event.target.files![0];
+    const fr = new FileReader();
+    fr.onload = (_e) => {
+      encryptMessage(new Uint8Array(fr.result as ArrayBuffer));
+    }
+    fr.readAsArrayBuffer(file);
+  }
+
+  return <>
+    <label className="file-upload hljs-meta" >
+      Select a file
+      <input type="file" onChange={handleChange} />
+    </label>
+  </>
+}
+
+const PasteForm = () => {
+  const [data, setValue] = useState("");
+
+  const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => {
+    event.preventDefault();
+    if (data.trim() !== "") {
+      encryptMessage(new TextEncoder().encode(data));
+    } else {
+      console.log("[js] Not sending string because it was empty.");
+    }
+  }
+
+  return (
+    <form className='hljs centered' onSubmit={handleSubmit}>
+      <textarea
+        placeholder="すいちゃんは～ 今日もかわい～！！"
+        value={data}
+        onChange={(e) => setValue(e.target.value)}
+      />
+      <input className="text-upload hljs-meta" type="submit" value="Submit" />
+    </form>
+  )
+}
+
+function encryptMessage(data: Uint8Array) {
+  const worker = new Worker(new URL('./bg_encrypt.ts', import.meta.url));
+  worker.onmessage = (event: MessageEvent<string>) => {
+    console.log(event);
+    if (event.data === 'init') {
+      console.log("[js] Sending data to worker");
+      const message = { data, location: window.location.toString() };
+      worker.postMessage(message, [message.data.buffer]);
+    } else {
+      window.location.assign(event.data);
+    }
+  }
+}
+
+function createUploadUi() {
+  const html = <main className='hljs centered fullscreen'>
+    <FileForm />
+    <p>or paste your data below</p>
+    <PasteForm />
+  </main>;
+
+  ReactDom.render(html, document.body);
+}
+
+function loadFromDb(mimeType: string, name?: string, language?: string) {
+  let resolvedName: string;
+  if (name) {
+    resolvedName = name;
+  } else {
+    const pathName = window.location.pathname;
+    const leafIndex = pathName.indexOf("/");
+    resolvedName = pathName.slice(leafIndex + 1);
+  }
+
+  console.log("[js] Resolved name:", resolvedName);
+  console.log("[js] Got language:", language);
+  console.log("[js] Got mime type:", mimeType);
+
+  const dbReq = window.indexedDB.open("omegaupload", 1);
+  dbReq.onsuccess = (evt) => {
+    const db = (evt.target as IDBRequest).result;
+    const obj_store = db
+      .transaction("decrypted data")
+      .objectStore("decrypted data");
+    const fetchReq = obj_store.get(window.location.pathname);
+    fetchReq.onsuccess = (evt) => {
+      const data = (evt.target as IDBRequest).result;
+      switch (data.type) {
+        case "string":
+          console.info("[js] Rendering string UI.");
+          createStringPasteUi(data, mimeType, resolvedName, language);
+          break;
+        case "blob":
+          console.info("[js] Rendering blob UI.");
+          createBlobPasteUi(data, resolvedName);
+          break;
+        case "image":
+          console.info("[js] Rendering image UI.");
+          createImagePasteUi(data, resolvedName, mimeType);
+          break;
+        case "audio":
+          console.info("[js] Rendering audio UI.");
+          createAudioPasteUi(data, resolvedName, mimeType);
+          break;
+        case "video":
+          console.info("[js] Rendering video UI.");
+          createVideoPasteUi(data, resolvedName, mimeType);
+          break;
+        case "archive":
+          console.info("[js] Rendering archive UI.");
+          createArchivePasteUi(data, resolvedName);
+          break;
+        default:
+          console.info("[js] Rendering unknown UI.");
+          renderMessage("Something went wrong. Try clearing local data.");
+          break;
+      }
+
+      // IDB was only used as a temporary medium;
+      window.onbeforeunload = (_e) => {
+        // See https://link.eddie.sh/NrIIq on why .commit is necessary.
+        const transaction = db.transaction("decrypted data", "readwrite");
+        transaction
+          .objectStore("decrypted data")
+          .delete(window.location.pathname);
+        transaction.commit();
+        transaction.oncomplete = () => {
+          console.log("Item deleted from cache");
+        }
+      };
+    };
+
+    fetchReq.onerror = (evt) => {
+      console.log("err");
+      console.log(evt);
+    };
+  };
+}
+
+function createStringPasteUi(data, mimeType: string, name: string, lang?: string, skipSyntaxHighlight?: boolean) {
+  const html = <main>
+    <pre className='paste'>
+      <p className='unselectable centered'>{data.expiration}</p>
+      <a href={getObjectUrl([data.data], mimeType)} download={name} className='hljs-meta centered'>
+        Download file.
+      </a>
+      <hr />
+      <code>
+        {data.data}
+      </code>
+    </pre>
+  </main>;
+
+  ReactDom.render(html, document.body);
+
+  if (skipSyntaxHighlight) {
+    return;
+  }
+
+  let languages = undefined;
+
+  if (!hljs.getLanguage(lang)) {
+    if (lang) {
+      console.warn(`[js] User provided language (${lang}) is not known.`);
+    } else {
+      console.info(`[js] Language hint not provided.`);
+    }
+  } else {
+    languages = [lang];
+  }
+
+  // If a language wasn't provided, see if we can use the file extension to give
+  // us a better hint for hljs
+  if (!languages) {
+    if (name) {
+      console.log("[js] Trying to infer from file name...");
+      const periodIndex = name.indexOf(".");
+      if (periodIndex === -1) {
+        console.warn("[js] Did not find file extension.")
+      } else {
+        let extension = name.slice(periodIndex + 1);
+        console.info(`[js] Found extension ${extension}.`);
+        if (!hljs.getLanguage(extension)) {
+          console.warn(`[js] Extension was not recognized by hljs. Giving up.`);
+        } else {
+          console.info("[js] Successfully inferred language from file extension.");
+          languages = [extension];
+        }
+      }
+    } else {
+      console.log("[js] No file name hint provided.");
+    }
+  } else {
+    console.info(`[js] Selecting user provided language ${languages[0]} for highlighting.`);
+  }
+
+  // If we still haven't set languages here, then we're leaving it up to the
+  // library
+  if (!languages) {
+    console.log("[js] Deferring to hljs inference for syntax highlighting.");
+  } else {
+    hljs.configure({ languages });
+  }
+
+  hljs.highlightAll();
+
+
+  (hljs as any).initLineNumbersOnLoad();
+}
+
+function createBlobPasteUi(data, name: string) {
+  const html = <main className='hljs centered fullscreen'>
+    <div className='centered'>
+      <p>{data.expiration}</p>
+      <a href={getObjectUrl(data.data, name)} download={name} className='hljs-meta'>
+        Download binary file.
+      </a>
+    </div>
+    <p className='display-anyways hljs-comment' onClick={() => {
+      data.data.text().then(text => {
+        data.data = text;
+        createStringPasteUi(data, "application/octet-stream", name, undefined, true);
+      })
+    }}>Display anyways?</p>
+  </main>;
+
+  ReactDom.render(html, document.body);
+}
+
+function createImagePasteUi({ expiration, data, file_size }, name: string, mimeType: string) {
+  createMultiMediaPasteUi("img", expiration, data, name, mimeType, (downloadEle, imgEle) => {
+    imgEle.onload = () => {
+      const width = imgEle.naturalWidth || imgEle.width;
+      const height = imgEle.naturalHeight || imgEle.height;
+      downloadEle.textContent = "Download " + file_size + " \u2014 " + width + " by " + height;
+    }
+  });
+}
+
+function createAudioPasteUi({ expiration, data }, name: string, mimeType: string) {
+  createMultiMediaPasteUi("audio", expiration, data, name, mimeType, "Download");
+}
+
+function createVideoPasteUi({ expiration, data }, name: string, mimeType: string) {
+  createMultiMediaPasteUi("video", expiration, data, name, mimeType, "Download");
+}
+
+function createArchivePasteUi({ expiration, data, entries }, name: string) {
+  // Because it's a stable sort, we can first sort by name (to get all folder
+  // items grouped together) and then sort by if there's a / or not.
+  entries.sort((a, b) => {
+    return a.name.toLowerCase().localeCompare(b.name.toLowerCase());
+  });
+
+  // This doesn't get sub directories and their folders, but hey it's close
+  // enough
+  entries.sort((a, b) => {
+    return b.name.includes("/") - a.name.includes("/");
+  });
+
+  const html = <main>
+    <section className='paste'>
+      <p className='centered'>{expiration}</p>
+      <a href={getObjectUrl(data)} download={name} className='hljs-meta centered'>Download</a>
+      <hr />
+      <table className='archive-table'>
+        <thead>
+          <tr className='hljs-title'><th>Name</th><th className='align-right'>File Size</th></tr>
+        </thead>
+        <tbody>
+          {
+            entries.map(({ name, file_size }) => {
+              return <tr><td>{name}</td><td className='align-right hljs-number'>{file_size}</td></tr>;
+            })
+          }
+        </tbody>
+      </table>
+    </section>
+  </main>;
+
+  ReactDom.render(html, document.body);
+
+}
+
+function createMultiMediaPasteUi(tag, expiration, data, name: string, mimeType: string, on_create?: Function | string) {
+  const bodyEle = document.body;
+  bodyEle.textContent = '';
+
+  const mainEle = document.createElement("main");
+  mainEle.classList.add("hljs");
+  mainEle.classList.add("centered");
+  mainEle.classList.add("fullscreen");
+
+  const downloadLink = getObjectUrl(data, mimeType);
+
+  const expirationEle = document.createElement("p");
+  expirationEle.textContent = expiration;
+  mainEle.appendChild(expirationEle);
+
+  const mediaEle = document.createElement(tag);
+  mediaEle.src = downloadLink;
+  mediaEle.controls = true;
+  mainEle.appendChild(mediaEle);
+
+  const downloadEle = document.createElement("a");
+  downloadEle.href = downloadLink;
+  downloadEle.download = name;
+  downloadEle.classList.add("hljs-meta");
+  mainEle.appendChild(downloadEle);
+
+  bodyEle.appendChild(mainEle);
+
+  if (on_create instanceof Function) {
+    on_create(downloadEle, mediaEle);
+  } else {
+    downloadEle.textContent = on_create;
+  }
+}
+
+function renderMessage(message) {
+  ReactDom.render(
+    <main className='hljs centered fullscreen'>
+      {message}
+    </main>,
+    document.body,
+  );
+}
+
+function getObjectUrl(data, mimeType?: string) {
+  return URL.createObjectURL(new Blob([data], { type: mimeType }));
+}
+
+
+export { renderMessage, createUploadUi, loadFromDb };

web/src/util.rs

@@ -0,0 +1,26 @@
+// OmegaUpload Web Frontend
+// Copyright (C) 2021  Edward Shen
+//
+// 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, either version 3 of the License, or
+// (at your option) any later version.
+//
+// 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 <https://www.gnu.org/licenses/>.
+
+use wasm_bindgen::JsCast;
+use web_sys::{Event, IdbDatabase, IdbOpenDbRequest};
+
+/// # Panics
+///
+/// This will panic if event is not an event from the IDB API.
+pub fn as_idb_db(event: &Event) -> IdbDatabase {
+    let target: IdbOpenDbRequest = event.target().map(JsCast::unchecked_into).unwrap();
+    target.result().map(JsCast::unchecked_into).unwrap()
+}

web/vendor/MPLUS_FONTS

@@ -0,0 +1 @@
+Subproject commit a1268635894c5ee23dfdece570418ca07b66c3fc

webpack.config.js

@@ -0,0 +1,53 @@
+const path = require('path');
+const HtmlWebpackPlugin = require('html-webpack-plugin');
+const webpack = require('webpack');
+const WasmPackPlugin = require("@wasm-tool/wasm-pack-plugin");
+const { SourceMapDevToolPlugin } = require('webpack');
+
+module.exports = {
+  entry: './web/src/index.js',
+  module: {
+    rules: [
+      {
+        test: /\.tsx?$/,
+        use: 'swc-loader',
+        exclude: /node_modules/,
+      },
+      {
+        test: /\.scss$/i,
+        use: [
+          // Creates `style` nodes from JS strings
+          "style-loader",
+          // Translates CSS into CommonJS
+          "css-loader",
+          // Compiles Sass to CSS
+          "sass-loader",
+          // source map for debugging
+          "source-map-loader"
+        ],
+      },
+    ],
+  },
+  resolve: {
+    extensions: ['.tsx', '.ts', '.js'],
+  },
+  output: {
+    path: path.resolve(__dirname, 'dist/static'),
+    filename: 'index.js',
+  },
+  plugins: [
+    new HtmlWebpackPlugin({
+      template: path.resolve(__dirname, 'web/src/index.html'),
+      publicPath: "/static",
+    }),
+    new WasmPackPlugin({
+      crateDirectory: path.resolve(__dirname, "web"),
+      outDir: path.resolve(__dirname, "web/pkg"),
+    }),
+    new SourceMapDevToolPlugin({}),
+  ],
+  experiments: {
+    asyncWebAssembly: true,
+  },
+  mode: 'development'
+};