Backup

.envrc

@@ -0,0 +1 @@
+use nix

.gitignore

@@ -1 +1,2 @@
 target
+.direnv

Cargo.toml

@@ -8,17 +8,22 @@ license = "MIT License"
 # Used by library
 macaddr = "1.0.1"
 log = "0.4"
+actix-web = "4"
 # Used by server runtime
 fern = { optional = true, version = "0.7" }
 
+
 [dev-dependencies]
 stopwatch = "0.0.7"
 rand = "0.9"
 
 [features]
+default = ["client", "server"]
 bin-deps = ["fern"]
+client = []
+server = []
 
 [[bin]]
 name = "matchmaker_server"
 path = "src/main.rs"
-required-features = []
+required-features = ["server"]

docs/WEBAPI_V1.md

@@ -0,0 +1,49 @@
+# Web API Documentation - Draft
+
+## /api/info
+
+### GET
+
+```json
+{
+    "supportedVersions": [
+        "<VERSION IDENTIFIER>"
+    ],
+    "partitions": [
+        "us",
+        "uk"
+        // ...
+    ],
+    "heartbeatTimeoutDuration": 7
+}
+```
+
+## /api/query
+
+### POST
+
+```json
+{
+    // if this is unspecified/null, infer a default partition
+    "partition": "us",
+    ""
+    // Validated against a server-side maximum and minimum
+    "count": 7,
+    // Validated to prevent out-of-bounds issues.
+    // This allows reading a slice of the instances,
+    // allowing pagination.
+    "offset": 0
+}
+```
+
+## /api/connect
+
+
+
+## /api/heartbeat
+
+```json
+{
+    "token": 
+}
+```

rust-toolchain.toml

@@ -0,0 +1,4 @@
+[toolchain]
+channel = "1.81"
+components = ["rustfmt"]
+profile = "minimal"

shell.nix

@@ -1,4 +1,40 @@
 { pkgs ? import <nixpkgs> {} }:
-pkgs.mkShell {
-  buildInputs = [ pkgs.cargo pkgs.rustc ];
-}
+  let
+    overrides = (builtins.fromTOML (builtins.readFile ./rust-toolchain.toml));
+    libPath = with pkgs; lib.makeLibraryPath [
+      # load external libraries that you need in your rust project here
+    ];
+in
+  pkgs.mkShell rec {
+    buildInputs = with pkgs; [
+      clang
+      # Replace llvmPackages with llvmPackages_X, where X is the latest LLVM version (at the time of writing, 16)
+      llvmPackages.bintools
+      rustup
+    ];
+    RUSTC_VERSION = overrides.toolchain.channel;
+    # https://github.com/rust-lang/rust-bindgen#environment-variables
+    LIBCLANG_PATH = pkgs.lib.makeLibraryPath [ pkgs.llvmPackages_latest.libclang.lib ];
+    shellHook = ''
+      export PATH=$PATH:''${CARGO_HOME:-~/.cargo}/bin
+      export PATH=$PATH:''${RUSTUP_HOME:-~/.rustup}/toolchains/$RUSTC_VERSION-x86_64-unknown-linux-gnu/bin/
+      '';
+    # Add precompiled library to rustc search path
+    RUSTFLAGS = (builtins.map (a: ''-L ${a}/lib'') [
+      # add libraries here (e.g. pkgs.libvmi)
+    ]);
+    LD_LIBRARY_PATH = libPath;
+    # Add glibc, clang, glib, and other headers to bindgen search path
+    BINDGEN_EXTRA_CLANG_ARGS =
+    # Includes normal include path
+    (builtins.map (a: ''-I"${a}/include"'') [
+      # add dev libraries here (e.g. pkgs.libvmi.dev)
+      pkgs.glibc.dev
+    ])
+    # Includes with special directory paths
+    ++ [
+      ''-I"${pkgs.llvmPackages_latest.libclang.lib}/lib/clang/${pkgs.llvmPackages_latest.libclang.version}/include"''
+      ''-I"${pkgs.glib.dev}/include/glib-2.0"''
+      ''-I${pkgs.glib.out}/lib/glib-2.0/include/''
+    ];
+  }

src/data/mod.rs

@@ -1,28 +0,0 @@
-use auth::AuthGuard;
-use util::Address;
-
-pub mod util;
-pub mod auth;
-
-pub enum DataStorageError {
-    AlreadyExists,
-    AntiSpam(String)
-}
-
-pub trait DataStorageItem {
-    type Id;
-    type Address: Address;
-    fn id(&self) -> Self::Id;
-    fn address_info(&self) -> Self::Address;
-}
-
-pub trait DataStorage<Auth: AuthGuard, Item: DataStorageItem>: IntoIterator<Item = Item> {
-    fn update_instance(&mut self, address: &impl Address, guard: Option<Auth>) 
-        -> Result<Item::Id, DataStorageError>;
-
-    fn send_heartbeat(&mut self, address: &impl Address) 
-        -> Result<(),DataStorageError>;
-
-    fn peek_instance(&self, id: Item::Id);
-}
-

src/data/util.rs

@@ -1,33 +0,0 @@
-use std::net::IpAddr;
-
-use macaddr::MacAddr;
-
-pub trait Address: PartialEq {
-    fn mac(&self) -> MacAddr;
-    fn ip(&self) -> IpAddr;
-}
-
-#[derive(PartialEq, Debug)]
-struct SimpleAddress {
-    mac: MacAddr,
-    ip: IpAddr
-}
-
-impl SimpleAddress {
-    fn new(ip: IpAddr, mac: MacAddr) -> SimpleAddress {
-        return SimpleAddress {
-            ip,
-            mac
-        }
-    }
-}
-
-impl Address for SimpleAddress {
-    fn mac(&self) -> MacAddr {
-        self.mac
-    }
-
-    fn ip(&self) -> IpAddr {
-        self.ip
-    }
-}

src/lib.rs

@@ -1,9 +1,15 @@
-pub mod data;
+pub mod server;
+
+pub enum MatchmakerError {
+    AlreadyExists,
+    InternalError(String),
+    LimitReached(String),
+    Unauthorized,
+    AntiSpam(String),
+}
 
 pub trait Matchmaker {
     fn run(&mut self);
 }
 
-struct DefaultMatchmaker {
-    
-}
+struct DefaultMatchmaker {}

src/main.rs

@@ -1,3 +1 @@
-fn main() {
-    
-}
+fn main() {}

src/server/access.rs

@@ -0,0 +1,33 @@
+/* -------------------------------------------------------------------------- */
+/*                                 Interfaces                                 */
+/* -------------------------------------------------------------------------- */
+
+use std::collections::HashMap;
+
+use super::util::Address;
+
+pub struct AccessInfo {
+    address: Address,
+}
+
+pub trait AccessGuard {
+    fn check(&self, info: &AccessInfo);
+}
+
+pub enum AccessAction {
+    Allow,
+    Block,
+}
+
+/* -------------------------------------------------------------------------- */
+/*                                Rate Limiting                               */
+/* -------------------------------------------------------------------------- */
+
+struct RateLimitAccessor {}
+
+pub struct RateLimitAccessGuard {
+    max_read: i32,
+    max_write: i32,
+    max_accessors: i32,
+    accessors: HashMap<Address, RateLimitAccessor>,
+}

src/server/auth.rs

@@ -185,7 +185,7 @@ mod tests {
 
 #[derive(Debug, Clone)]
 pub struct CodeAuthKey {
-    key: u64
+    key: u64,
 }
 
 impl CodeAuthKey {
@@ -197,7 +197,7 @@ impl CodeAuthKey {
 
     pub fn new<T: Hash + ?Sized>(code: &T) -> CodeAuthKey {
         CodeAuthKey {
-            key: Self::_generate_key(code)
+            key: Self::_generate_key(code),
         }
     }
 }
@@ -211,14 +211,12 @@ impl PartialEq for CodeAuthKey {
 }
 
 pub struct CodeAuthGuard {
-    reference_key: CodeAuthKey
+    reference_key: CodeAuthKey,
 }
 
 impl CodeAuthGuard {
     fn new(key: CodeAuthKey) -> Self {
-        Self {
-            reference_key: key
-        }
+        Self { reference_key: key }
     }
 }
 
@@ -233,15 +231,14 @@ impl AuthGuard for CodeAuthGuard {
 /* ------------------------------- Unit Tests ------------------------------- */
 #[cfg(test)]
 mod code_authguard_tests {
+    use super::*;
     use rand::{distr::Alphanumeric, prelude::*};
     use stopwatch::Stopwatch;
-    use super::*;
 
     fn _create_rng_string() -> String {
         let mut rng = rand::rng();
         let count = rng.random_range(5..100);
-        rng
-            .sample_iter(Alphanumeric)
+        rng.sample_iter(Alphanumeric)
             .take(count)
             .map(char::from)
             .collect()

src/server/mod.rs

@@ -0,0 +1,25 @@
+use auth::AuthGuard;
+use util::Address;
+
+use crate::MatchmakerError;
+
+pub mod access;
+pub mod auth;
+pub mod storage;
+pub mod util;
+
+pub trait DataStorageItem {
+    type Id;
+    fn id(&self) -> Self::Id;
+    fn address_info(&self) -> Address;
+}
+
+pub trait DataStorage<Auth: AuthGuard, Item: DataStorageItem>: IntoIterator<Item = Item> {
+    fn reserve_instance(
+        &mut self,
+        address: &Address,
+        guard: Option<Auth>,
+    ) -> Result<Item::Id, MatchmakerError>;
+
+    fn remove_instance(&mut self, id: Item::Id);
+}

src/server/storage.rs

@@ -0,0 +1,375 @@
+use std::{
+    collections::{BTreeMap, HashMap}, iter::Map, net::IpAddr, sync::RwLock
+};
+
+use super::util::Address;
+
+/* -------------------------------------------------------------------------- */
+/*                              Instance Storage                              */
+/* -------------------------------------------------------------------------- */
+
+#[derive(Debug)]
+pub enum InstanceStorageError {
+    NotFound,
+    Full
+}
+
+pub trait Instance {
+    type Id;
+    fn id(&self) -> Self::Id;
+    fn ip(&self) -> IpAddr;
+}
+
+pub trait InstanceStorage<Item: Instance>: IntoIterator<Item = Item> {
+    // Create
+
+    // Request
+    fn get_by_address(&self, address: &Address) -> Result<&Item, InstanceStorageError>;
+    fn get_by_address_mut(
+        &mut self,
+        address: &Address,
+    ) -> Result<&mut Item, InstanceStorageError>;
+    fn get_by_id(&self, id: Item::Id) -> Result<&Item, InstanceStorageError>;
+    fn get_by_id_mut(&mut self, id: Item::Id) -> Result<&mut Item, InstanceStorageError>;
+    // Delete
+    fn remove_by_address(&mut self, address: &Address) -> Result<(), InstanceStorageError>;
+    fn remove_by_id(&mut self, id: Item::Id) -> Result<(), InstanceStorageError>;
+}
+
+/* ------------------------- Default Implementation ------------------------- */
+pub struct BasicInstance {
+    id: u32,
+    ip: IpAddr
+}
+
+impl Instance for BasicInstance {
+    type Id = u32;
+    fn id(&self) -> Self::Id {
+        self.id
+    }
+    fn ip(&self) -> IpAddr {
+        self.ip
+    }
+}
+
+pub struct BasicInstanceStorage {
+    max_instances: u32,
+    instances: BTreeMap<Address, BasicInstance>,
+}
+
+impl BasicInstanceStorage {
+    fn new(max_instances: u32) -> Self {
+        Self {
+            instances: BTreeMap::new(),
+            max_instances
+        }
+    }
+}
+
+impl InstanceStorage<BasicInstance> for BasicInstanceStorage {
+    fn get_by_address(&self, address: &Address) -> Result<&BasicInstance, InstanceStorageError> {
+        match self.instances.get(address) {
+            Some(v) => {
+                Ok(v)
+            },
+            None => Err(InstanceStorageError::NotFound)
+        }
+    }
+
+    fn get_by_address_mut(
+        &mut self,
+        address: &Address,
+    ) -> Result<&mut BasicInstance, InstanceStorageError> {
+        match self.instances.get_mut(address) {
+            Some(v) => {
+                Ok(v)
+            },
+            None => Err(InstanceStorageError::NotFound)
+        }
+    }
+
+    fn get_by_id(&self, id: <BasicInstance as Instance>::Id) -> Result<&BasicInstance, InstanceStorageError> {
+        let search_result  = self.instances
+            .iter()
+            .find(|v| v.1.id == id);
+        match search_result   {
+            Some(v)   =>  {
+                Ok(v.1)
+            },
+            None   =>  {
+                Err(InstanceStorageError::NotFound)
+            }
+        }
+    }
+
+    fn get_by_id_mut(&mut self, id: <BasicInstance as Instance>::Id) -> Result<&mut BasicInstance, InstanceStorageError> {
+        let search_result  = self.instances
+            .iter_mut()
+            .find(|v| v.1.id == id);
+        match search_result   {
+            Some(v)   =>  {
+                Ok(v.1)
+            },
+            None   =>  {
+                Err(InstanceStorageError::NotFound)
+            }
+        }
+    }
+
+    fn remove_by_address(&mut self, address: &Address) -> Result<(), InstanceStorageError> {
+        match self.instances.remove(address) {
+            Some(_) => {
+                Ok(())
+            },
+            None => Err(InstanceStorageError::NotFound)
+        }
+    }
+
+    fn remove_by_id(&mut self, id: <BasicInstance as Instance>::Id) -> Result<(), InstanceStorageError> {
+        let original_len = self.instances.len();
+        self.instances.retain(|_, v| v.id != id);
+    
+        if self.instances.len() == original_len {
+            return Err(InstanceStorageError::NotFound);
+        }
+    
+        Ok(())
+    }    
+}
+
+impl IntoIterator for BasicInstanceStorage {
+    type Item = BasicInstance;
+    type IntoIter = std::vec::IntoIter<BasicInstance>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        self.instances
+            .into_iter()
+            .map(|(_address, instance)| instance)
+            .collect::<Vec<BasicInstance>>()
+            .into_iter()
+    }
+}
+
+#[cfg(test)]
+mod basic_instance_test {
+    use std::net::{IpAddr, Ipv4Addr};
+
+    use macaddr::{MacAddr, MacAddr6};
+
+    use super::*;
+
+    fn _create_sample_address(id: u8) -> Address {
+        let ip: IpAddr = IpAddr::V4(Ipv4Addr::new(127, 0, 0, id));
+        let mac: MacAddr  = MacAddr::V6(MacAddr6::new(id, id, id, id, id, id));
+
+        Address::new(ip, mac)
+    }
+
+    #[test]
+    fn test_get_by_address_found() {
+        let mut storage = BasicInstanceStorage::new(10);
+        let instance = BasicInstance { id: 42, ip: IpAddr::V4(Ipv4Addr::LOCALHOST) };
+        let addr = _create_sample_address(1);
+        storage.instances.insert(addr.clone(), instance);
+        let fetched = storage.get_by_address(&addr).unwrap();
+        assert_eq!(fetched.id, 42);
+    }
+
+    #[test]
+    fn test_get_by_address_not_found() {
+        let storage = BasicInstanceStorage::new(10);
+        let addr = _create_sample_address(1);
+        let result = storage.get_by_address(&addr);
+        assert!(matches!(result, Err(InstanceStorageError::NotFound)));
+    }
+
+    #[test]
+    fn test_get_by_address_mut() {
+        let mut storage = BasicInstanceStorage::new(10);
+        let addr = _create_sample_address(1);
+        let instance = BasicInstance { id: 42, ip: IpAddr::V4(Ipv4Addr::LOCALHOST) };
+        storage.instances.insert(addr.clone(), instance);
+        {
+            let fetched_mut = storage.get_by_address_mut(&addr).unwrap();
+            fetched_mut.id = 100;
+        }
+        let fetched = storage.get_by_address(&addr).unwrap();
+        assert_eq!(fetched.id, 100);
+    }
+
+    #[test]
+    fn test_get_by_id_found() {
+        let mut storage = BasicInstanceStorage::new(10);
+        let addr = _create_sample_address(1);
+        let instance = BasicInstance { id: 42, ip: IpAddr::V4(Ipv4Addr::LOCALHOST) };
+        storage.instances.insert(addr, instance);
+        let fetched = storage.get_by_id(42).unwrap();
+        assert_eq!(fetched.id, 42);
+    }
+
+    #[test]
+    fn test_get_by_id_not_found() {
+        let storage = BasicInstanceStorage::new(10);
+        let result = storage.get_by_id(42);
+        assert!(matches!(result, Err(InstanceStorageError::NotFound)));
+    }
+
+    #[test]
+    fn test_get_by_id_mut() {
+        let mut storage = BasicInstanceStorage::new(10);
+        let addr = _create_sample_address(1);
+        let instance = BasicInstance { id: 42, ip: IpAddr::V4(Ipv4Addr::LOCALHOST) };
+        storage.instances.insert(addr, instance);
+        {
+            let fetched_mut = storage.get_by_id_mut(42);
+            assert!(fetched_mut.is_ok());
+            let fetched_mut = fetched_mut.unwrap();
+            fetched_mut.id = 99;
+        }
+        let fetched = storage.get_by_id(42);
+        assert!(fetched.is_err());
+    }
+
+    #[test]
+    fn test_remove_by_address() {
+        let mut storage = BasicInstanceStorage::new(10);
+        let addr = _create_sample_address(1);
+        storage.instances.insert(addr.clone(), BasicInstance { id: 42, ip: IpAddr::V4(Ipv4Addr::LOCALHOST) });
+        assert!(storage.remove_by_address(&addr).is_ok());
+        assert!(storage.instances.is_empty());
+    }
+
+    #[test]
+    fn test_remove_by_address_not_found() {
+        let mut storage = BasicInstanceStorage::new(10);
+        let addr = _create_sample_address(1);
+        let result = storage.remove_by_address(&addr);
+        assert!(matches!(result, Err(InstanceStorageError::NotFound)));
+    }
+
+    #[test]
+    fn test_remove_by_id() {
+        let mut storage = BasicInstanceStorage::new(10);
+        let addr = _create_sample_address(1);
+        storage.instances.insert(addr, BasicInstance { id: 42, ip: IpAddr::V4(Ipv4Addr::LOCALHOST) });
+        assert!(storage.remove_by_id(42).is_ok());
+        assert!(storage.instances.is_empty());
+    }
+
+    #[test]
+    fn test_remove_by_id_not_found() {
+        let mut storage = BasicInstanceStorage::new(10);
+        let result = storage.remove_by_id(42);
+        assert!(matches!(result, Err(InstanceStorageError::NotFound)));
+    }
+
+    #[test]
+    fn test_into_iterator() {
+        let mut storage = BasicInstanceStorage::new(10);
+        storage.instances.insert(_create_sample_address(1), BasicInstance { id: 42, ip: IpAddr::V4(Ipv4Addr::LOCALHOST) });
+        storage.instances.insert(_create_sample_address(2), BasicInstance { id: 43, ip: IpAddr::V4(Ipv4Addr::LOCALHOST) });
+        let instances: Vec<_> = storage.into_iter().collect();
+        assert_eq!(instances.len(), 2);
+        let ids: Vec<u32> = instances.into_iter().map(|inst| inst.id).collect();
+        assert!(ids.contains(&42));
+        assert!(ids.contains(&43));
+    }
+}
+
+/* -------------------------------------------------------------------------- */
+/*                              Attribute System                              */
+/* -------------------------------------------------------------------------- */
+
+// TODO: Optimize the heck out of this - This is effectively a placeholder
+// It will likely be *very* space inefficient.
+
+/* -------------------------------- Metadata -------------------------------- */
+#[repr(u8)]
+#[derive(PartialEq)]
+enum AttributeType {
+    Float,
+    Integer,
+    Boolean,
+    String,
+}
+
+enum AttributeValue {
+    Float(f32),
+    Integer(i32),
+    Boolean(bool),
+    String(String),
+}
+
+impl AttributeValue {
+    fn get_type(&self) -> AttributeType {
+        match self {
+            Float => AttributeType::Float,
+            Integer => AttributeType::Integer,
+            Boolean => AttributeType::Boolean,
+            String => AttributeType::String,
+        }
+    }
+}
+
+enum AttributeError {
+    InvalidType(AttributeType),
+    InvalidKey(String)
+}
+
+/* --------------------------------- Schema --------------------------------- */
+
+// TODO: Builder pattern to create this
+pub struct AttributeSchema {
+    attribute_schema: Map<String, AttributeSchemaElement>,
+}
+
+pub struct AttributeSchemaElement {
+    default_type_and_value: AttributeValue,
+}
+
+/* ---------------------------------- List ---------------------------------- */
+
+struct AttributeListElement {
+    value: AttributeValue,
+}
+
+pub struct AttributeList<'a> {
+    schema: &'a AttributeSchema,
+    data: RwLock<HashMap<String, AttributeListElement>>,
+}
+
+impl<'a> AttributeList<'a> {
+    fn new(schema: &'a AttributeSchema) -> Self {
+        Self {
+            schema,
+            // TODO: Populate with initial values
+            data: RwLock::new(HashMap::new()),
+        }
+    }
+
+    fn set_attribute(&mut self, key: &str, value: AttributeValue) -> Result<(), AttributeError> {
+        // ! Naive unwrap is present
+        let mut write = self.data.write().unwrap();
+        {
+            let element_read = &write[key];
+            if value.get_type() != element_read.value.get_type() {
+                return Err(AttributeError::InvalidType(value.get_type()));
+            }
+        }
+        {
+            // ! Double query
+            let element = write.get_mut(key);
+            match element {
+                Some(v) => {
+                    v.value = value;
+                },
+                None => {
+                    // TODO: Verify that this is the best thing to do
+                    return Err(AttributeError::InvalidKey(key.to_string()))
+                }
+            }
+        }
+
+        Ok(())
+    }
+}

src/server/util.rs

@@ -0,0 +1,33 @@
+use std::net::IpAddr;
+
+use macaddr::MacAddr;
+
+#[derive(Debug, Hash, PartialOrd, Ord, Clone)]
+pub struct Address {
+    mac: MacAddr,
+    ip: IpAddr,
+}
+
+impl Address {
+    pub fn new(ip: IpAddr, mac: MacAddr) -> Self {
+        return Self { ip, mac };
+    }
+
+    pub fn mac(&self) -> MacAddr {
+        self.mac
+    }
+
+    pub fn ip(&self) -> IpAddr {
+        self.ip
+    }
+}
+
+impl PartialEq for Address {
+    fn eq(&self, other: &Self) -> bool {
+        self.ip == other.ip
+    }
+}
+
+impl Eq for Address {
+    
+}