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Connect and retrieve initial bucket index

This commit is contained in:
Matteo Settenvini 2023-07-01 13:03:41 +02:00
commit eccd4ef797
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# SPDX-FileCopyrightText: Public domain.
# SPDX-License-Identifier: CC0-1.0
/target
/Settings.toml

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# SPDX-FileCopyrightText: Public domain.
# SPDX-License-Identifier: CC0-1.0
repos:
- repo: https://github.com/pre-commit/pre-commit-hooks
rev: v4.4.0
hooks:
- id: check-yaml
name: Check YAML files syntax
- id: check-toml
name: Check TOML files syntax
- id: check-executables-have-shebangs
name: Check that executables have shebangs
- id: check-shebang-scripts-are-executable
name: Check that files with a shebang are executable
- id: debug-statements
name: Check for leftover debug statements
- id: fix-byte-order-marker
name: Remove obsolete byte order (BOM) UTF-8 markers
- id: end-of-file-fixer
name: Ensure that files end with a newline
- id: trailing-whitespace
name: Ensure no trailing spaces at the end of lines
- repo: https://github.com/Lucas-C/pre-commit-hooks.git
rev: v1.4.2
hooks:
- id: remove-crlf
name: Enforce LF instead of CRLF for newlines
- id: forbid-tabs
name: Check usage of spaces instead of tabs
exclude: "src/appendixes/references.bib"
- repo: https://github.com/doublify/pre-commit-rust
rev: v1.0
hooks:
- id: fmt
name: Format Rust code
- id: cargo-check
name: Check Rust code
- repo: https://github.com/fsfe/reuse-tool.git
rev: v1.1.2
hooks:
- id: reuse
name: Check copyright and license information

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// SPDX-FileCopyrightText: Public domain.
// SPDX-License-Identifier: CC0-1.0
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"type": "lldb",
"request": "launch",
"name": "Debug executable 'serves3'",
"cargo": {
"args": [
"build",
"--bin=serves3",
"--package=serves3"
],
"filter": {
"name": "serves3",
"kind": "bin"
}
},
"args": [],
"cwd": "${workspaceFolder}"
},
{
"type": "lldb",
"request": "launch",
"name": "Debug unit tests in executable 'serves3'",
"cargo": {
"args": [
"test",
"--no-run",
"--bin=serves3",
"--package=serves3"
],
"filter": {
"name": "serves3",
"kind": "bin"
}
},
"args": [],
"cwd": "${workspaceFolder}"
}
]
}

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SPDX-FileCopyrightText: Public domain.
SPDX-License-Identifier: CC0-1.0

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# SPDX-FileCopyrightText: © Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
# SPDX-License-Identifier: EUPL-1.2
[package]
name = "serves3"
version = "0.1.0"
edition = "2021"
authors = ["Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>"]
license = "EUPL-1.2"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
config = "0.13"
lazy_static = "1.4"
rocket = { git = "https://github.com/SergioBenitez/Rocket", rev = "v0.5.0-rc.3" }
rocket_dyn_templates = { git = "https://github.com/SergioBenitez/Rocket.git", rev = "v0.5.0-rc.3", features = ["tera"] }
rust-s3 = "0.32"

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[//]: # SPDX-FileCopyrightText: © Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
[//]: # SPDX-License-Identifier: EUPL-1.2
# serves3
A **very** simple proxy to browse files from private S3 buckets.
Helpful to be put behind another authenticating web server, such as Apache or NGINX.
Also helpful to do a different TLS termination.
## Configuration
Copy `Settings.toml.example` to `Settings.toml` and adjust your settings.
You can also add a `Rocket.toml` file to customize the server options. See the [Rocket documentation](https://rocket.rs/v0.5-rc/guide/configuration/#rockettoml).
Then just configure Apache or NGINX to proxy to the given port. For example:
```apache
<VirtualHost *:443>
ServerName example.com
ServerAdmin support@example.com
DocumentRoot /var/www
ProxyPreserveHost On
ProxyPass /s3/ http://127.0.0.1:8000/
ProxyPassReverse /s3/ http://127.0.0.1:8000/
# ... other options ...
</VirtualHost>
```
## Build and install
```bash
cargo install --root /usr/local # for instance
cd run-folder # folder with Settings.toml
serves3
```

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# SPDX-FileCopyrightText: Public domain.
# SPDX-License-Identifier: CC0-1.0
access_key_id = ""
secret_access_key = ""
bucket = ""
endpoint = "https://eu-central-1.linodeobjects.com"
region = "eu-central-1"

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// SPDX-FileCopyrightText: © Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
// SPDX-License-Identifier: EUPL-1.2
use {
lazy_static::lazy_static,
rocket::http::ContentType,
rocket::response::Responder,
rocket_dyn_templates::{context, Template},
std::path::PathBuf,
};
struct Settings {
access_key_id: String,
secret_access_key: String,
bucket_name: String,
endpoint: String,
region: String,
}
lazy_static! {
static ref SETTINGS: Settings = {
let settings = config::Config::builder()
.add_source(config::File::with_name("Settings.toml"))
.add_source(config::Environment::with_prefix("SERVES3"))
.build()
.unwrap();
Settings {
access_key_id: settings
.get_string("access_key_id")
.expect("Missing configuration key access_key_id"),
secret_access_key: settings
.get_string("secret_access_key")
.expect("Missing configuration key secret_access_key"),
bucket_name: settings
.get_string("bucket")
.expect("Missing configuration key bucket"),
region: settings
.get_string("region")
.expect("Missing configuration key region"),
endpoint: settings
.get_string("endpoint")
.expect("Missing configuration key endpoint"),
}
};
static ref BUCKET: s3::bucket::Bucket = {
let region = s3::Region::Custom {
region: SETTINGS.region.clone(),
endpoint: SETTINGS.endpoint.clone(),
};
let credentials = s3::creds::Credentials::new(
Some(&SETTINGS.access_key_id),
Some(&SETTINGS.secret_access_key),
None,
None,
None,
)
.expect("Wrong server S3 configuration");
s3::bucket::Bucket::new(&SETTINGS.bucket_name, region, credentials)
.expect("Cannot find or authenticate to S3 bucket")
};
}
#[derive(Responder)]
enum Error {
#[response(status = 422)]
InvalidArgument(String),
#[response(status = 404)]
NotFound(String),
}
#[rocket::get("/<path..>")]
async fn index(path: PathBuf) -> Result<(ContentType, Template), Error> {
let path: String = path
.to_str()
.ok_or_else(|| Error::InvalidArgument(format!("Invalid path '{}'", path.display())))?
.into();
let s3_objects = BUCKET
.list(path, Some("/".into()))
.await
.map_err(|_| Error::NotFound("Object not found".into()))?;
let objects: Vec<String> = s3_objects
.into_iter()
.flat_map(|list| -> Vec<String> {
if let Some(common_prefixes) = list.common_prefixes {
common_prefixes.into_iter().map(|dir| dir.prefix).collect()
} else {
list.contents.into_iter().map(|obj| obj.key).collect()
}
})
.collect();
let rendered = Template::render(
"index",
context! {
objects
},
);
Ok((ContentType::HTML, rendered))
}
#[rocket::launch]
fn rocket() -> _ {
rocket::build()
.mount("/", rocket::routes![index])
.attach(Template::fairing())
}

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<!DOCTYPE html>
<!--
SPDX-FileCopyrightText: © Matteo Settenvini <matteo.settenvini@montecristosoftware.eu>
SPDX-License-Identifier: EUPL-1.2
-->
<html>
<head></head>
<body>
<ul>
{% for object in objects %}
<li><a href="{{ object }}">{{ object }}</a></li>
{% endfor %}
</ul>
</body>
</html