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refactor: modularize middleware & crypto

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This commit is contained in:
imxyy_soope_
2025-12-04 17:35:26 +08:00
parent a9cb9510c5
commit 0e53ef4488
15 changed files with 347 additions and 310 deletions
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1
Cargo.lock generated
View File

@@ -1298,6 +1298,7 @@ dependencies = [
"axum",
"base64",
"bcrypt",
"bytes",
"cbc",
"chrono",
"concat-idents",

1
Cargo.toml
View File

@@ -30,3 +30,4 @@ rust-embed = "8.0"
mime_guess = "2.0"
jsonwebtoken = "9"
bcrypt = "0.17"
bytes = "1.11.0"

2
frontend/src/components/ChangePassword.tsx
View File

@@ -2,7 +2,7 @@ import { Component, createSignal } from 'solid-js';
import { authApi } from '../api/client';
import { authStore } from '../api/auth';
import { Button } from './ui/Button';
import { Card, CardContent, CardFooter, CardHeader } from './ui/Card';
import { CardContent, CardFooter, CardHeader } from './ui/Card';
import { Input } from './ui/Input';
import { Modal, ModalContent } from './ui/Modal';

4
src/admin/auth_middleware.rs
View File

@@ -7,10 +7,10 @@ use axum::{
response::Response,
};
use crate::{auth, state::AppState};
use crate::{auth, context::AppContext};
pub async fn auth_middleware(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
request: Request,
next: Next,
) -> Result<Response, StatusCode> {

34
src/admin/handlers.rs
View File

@@ -8,7 +8,7 @@ use axum::{
use tracing::error;
use crate::{
AppState, auth,
AppContext, auth,
db::{self, models::RequestLog},
};
@@ -16,7 +16,7 @@ use super::models::*;
// Authentication handlers
pub async fn login(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
Json(req): Json<LoginRequest>,
) -> Result<Json<LoginResponse>, (StatusCode, Json<ApiError>)> {
// Get stored password hash from config
@@ -69,7 +69,7 @@ pub async fn login(
}
pub async fn change_password(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
Json(req): Json<super::models::ChangePasswordRequest>,
) -> Result<StatusCode, (StatusCode, Json<ApiError>)> {
// Get current password hash from config
@@ -140,7 +140,7 @@ pub async fn change_password(
// Rules handlers
pub async fn list_rules(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
) -> Result<Json<Vec<RuleResponse>>, (StatusCode, Json<ApiError>)> {
match db::repositories::rules::list_all(&state.db).await {
Ok(rules) => Ok(Json(rules.into_iter().map(Into::into).collect())),
@@ -155,7 +155,7 @@ pub async fn list_rules(
}
pub async fn create_rule(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
Json(req): Json<CreateRuleRequest>,
) -> Result<Json<RuleResponse>, (StatusCode, Json<ApiError>)> {
// Validate action
@@ -211,7 +211,7 @@ pub async fn create_rule(
}
pub async fn update_rule(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
Path(id): Path<i64>,
Json(req): Json<UpdateRuleRequest>,
) -> Result<Json<RuleResponse>, (StatusCode, Json<ApiError>)> {
@@ -250,7 +250,7 @@ pub async fn update_rule(
}
pub async fn delete_rule(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
Path(id): Path<i64>,
) -> Result<StatusCode, (StatusCode, Json<ApiError>)> {
match db::repositories::rules::delete(&state.db, id).await {
@@ -267,7 +267,7 @@ pub async fn delete_rule(
// Commands handlers
pub async fn list_commands(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
) -> Result<Json<Vec<CommandResponse>>, (StatusCode, Json<ApiError>)> {
match db::repositories::commands::list_all(&state.db).await {
Ok(commands) => Ok(Json(commands.into_iter().map(Into::into).collect())),
@@ -282,7 +282,7 @@ pub async fn list_commands(
}
pub async fn verify_command(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
Path(id): Path<i64>,
Json(req): Json<UpdateCommandRequest>,
) -> Result<Json<CommandResponse>, (StatusCode, Json<ApiError>)> {
@@ -295,15 +295,7 @@ pub async fn verify_command(
.await
{
Ok(_) => match db::repositories::commands::find_by_id(&state.db, id).await {
Ok(Some(cmd)) => {
// Also update in-memory queue if status is verified
if req.status == "verified"
&& let Ok(cmd_value) = serde_json::from_str(&cmd.command_json)
{
state.commands.verified.write().await.push(cmd_value);
}
Ok(Json(cmd.into()))
}
Ok(Some(cmd)) => Ok(Json(cmd.into())),
_ => Err((
StatusCode::NOT_FOUND,
Json(ApiError::new("Command not found")),
@@ -321,7 +313,7 @@ pub async fn verify_command(
// Config handlers
pub async fn get_config(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
) -> Result<Json<std::collections::HashMap<String, String>>, (StatusCode, Json<ApiError>)> {
match db::repositories::config::get_all(&state.db).await {
Ok(config) => Ok(Json(config)),
@@ -336,7 +328,7 @@ pub async fn get_config(
}
pub async fn update_config(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
Json(config): Json<std::collections::HashMap<String, String>>,
) -> Result<StatusCode, (StatusCode, Json<ApiError>)> {
for (key, value) in config {
@@ -354,7 +346,7 @@ pub async fn update_config(
// Log handlers
pub async fn list_logs(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
) -> Result<Json<Vec<RequestLog>>, (StatusCode, Json<ApiError>)> {
match db::repositories::logs::list_all(&state.db).await {
Ok(logs) => Ok(Json(logs)),

18
src/admin/models.rs
View File

@@ -99,21 +99,3 @@ impl ApiError {
Self { error: msg.into() }
}
}
#[derive(Debug, Serialize)]
pub struct RequestDetails {
pub headers: Vec<Header>,
pub body: Body,
}
#[derive(Debug, Serialize)]
pub struct Body {
pub value: Value,
pub modified: bool,
}
#[derive(Debug, Serialize, Deserialize)]
pub struct Header {
pub value: String,
pub modified: bool,
}

6
src/admin/routes.rs
View File

@@ -5,11 +5,11 @@ use axum::{
routing::{delete, get, post, put},
};
use crate::AppState;
use crate::AppContext;
use super::{auth_middleware, handlers, static_files};
pub fn admin_routes(state: Arc<AppState>) -> Router<Arc<AppState>> {
pub fn admin_routes(ctx: Arc<AppContext>) -> Router<Arc<AppContext>> {
// Public routes (no authentication required)
let public_routes = Router::new().route("/api/login", post(handlers::login));
@@ -26,7 +26,7 @@ pub fn admin_routes(state: Arc<AppState>) -> Router<Arc<AppState>> {
.route("/api/config", put(handlers::update_config))
.route("/api/logs", get(handlers::list_logs))
.layer(axum::middleware::from_fn_with_state(
state,
ctx,
auth_middleware::auth_middleware,
));

67
src/context.rs Normal file
View File

@@ -0,0 +1,67 @@
use sqlx::SqlitePool;
use crate::crypto::Cryptor;
pub struct AppContext {
pub client: reqwest::Client,
pub target_url: reqwest::Url,
pub cryptor: Cryptor,
pub jwt_secret: String,
pub db: SqlitePool,
}
impl AppContext {
pub fn builder<'a>(
target_url: reqwest::Url,
key: &'a [u8],
iv: &'a [u8],
jwt_secret: String,
db: SqlitePool,
) -> AppContextBuilder<'a> {
AppContextBuilder {
client: None,
target_url,
key,
iv,
jwt_secret,
db,
}
}
}
pub struct AppContextBuilder<'a> {
client: Option<reqwest::Client>,
target_url: reqwest::Url,
key: &'a [u8],
iv: &'a [u8],
jwt_secret: String,
db: SqlitePool,
}
impl AppContextBuilder<'_> {
pub fn with_client(self, client: reqwest::Client) -> Self {
Self {
client: Some(client),
..self
}
}
pub fn build(self) -> anyhow::Result<AppContext> {
let AppContextBuilder {
client,
target_url,
key,
iv,
jwt_secret,
db,
} = self;
Ok(AppContext {
client: client.unwrap_or_default(),
cryptor: Cryptor::new(key, iv)?,
target_url,
jwt_secret,
db,
})
}
}

108
src/crypto.rs
View File

@@ -7,71 +7,59 @@ use cbc::{
cipher::{BlockDecryptMut, BlockEncryptMut, KeyIvInit, block_padding::Pkcs7},
};
type Aes128CbcEnc = Encryptor<Aes128>;
type Aes128CbcDec = Decryptor<Aes128>;
#[derive(Debug)]
pub enum CryptoError {
Base64(base64::DecodeError),
Aes(cbc::cipher::InvalidLength),
Unpad(cbc::cipher::block_padding::UnpadError),
Pad(aes::cipher::inout::PadError),
pub struct Cryptor {
encryptor: Encryptor<Aes128>,
decryptor: Decryptor<Aes128>,
}
impl fmt::Display for CryptoError {
impl Cryptor {
pub fn new(key: &[u8], iv: &[u8]) -> Result<Self, cbc::cipher::InvalidLength> {
Ok(Self {
encryptor: Encryptor::new_from_slices(key, iv)?,
decryptor: Decryptor::new_from_slices(key, iv)?,
})
}
pub fn decrypt(&self, ciphertext: String) -> Result<String, DecryptError> {
let mut ciphertext = STANDARD.decode(ciphertext).map_err(DecryptError::Base64)?;
let plaintext = self
.decryptor
.clone()
.decrypt_padded_mut::<Pkcs7>(ciphertext.as_mut_slice())
.map_err(DecryptError::Unpad)?;
Ok(String::from_utf8_lossy(plaintext).to_string())
}
pub fn encrypt(&self, plaintext: String) -> String {
// Allocate buffer with extra space for padding (AES block size is 16 bytes)
let plaintext_bytes = plaintext.as_bytes();
let mut buffer = vec![0u8; 16 * (plaintext_bytes.len() / 16 + 1)];
buffer[..plaintext_bytes.len()].copy_from_slice(plaintext_bytes);
let ciphertext = self
.encryptor
.clone()
.encrypt_padded_mut::<Pkcs7>(&mut buffer, plaintext_bytes.len())
.expect("enough space for encrypting is allocated");
STANDARD.encode(ciphertext)
}
}
#[derive(Debug)]
pub enum DecryptError {
Base64(base64::DecodeError),
Unpad(cbc::cipher::block_padding::UnpadError),
}
impl fmt::Display for DecryptError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
CryptoError::Base64(e) => write!(f, "Base64 decode failed: {}", e),
CryptoError::Aes(e) => write!(f, "AES decryption failed: {}", e),
CryptoError::Unpad(e) => write!(f, "PKCS7 unpadding failed: {}", e),
CryptoError::Pad(e) => write!(f, "PKCS7 padding failed: {}", e),
DecryptError::Base64(e) => write!(f, "Base64 decode failed: {}", e),
DecryptError::Unpad(e) => write!(f, "PKCS7 unpadding failed: {}", e),
}
}
}
impl std::error::Error for CryptoError {}
pub fn decrypt(ciphertext_b64: &str, key: &str, iv: &str) -> Result<String, CryptoError> {
// 1. Base64 decode the ciphertext
let ciphertext = STANDARD
.decode(ciphertext_b64)
.map_err(CryptoError::Base64)?;
// 2. Initialize AES-128 in CBC mode
let key_bytes = key.as_bytes();
let iv_bytes = iv.as_bytes();
let decryptor = Aes128CbcDec::new_from_slices(key_bytes, iv_bytes).map_err(CryptoError::Aes)?;
// 3. Decrypt the ciphertext, handling padding
let decrypted_len = ciphertext.len();
let mut plaintext = vec![0u8; decrypted_len];
let copy_len = ciphertext.len();
plaintext[..copy_len].copy_from_slice(&ciphertext);
let plaintext_slice = decryptor
.decrypt_padded_mut::<Pkcs7>(&mut plaintext[..decrypted_len])
.map_err(CryptoError::Unpad)?;
// 4. Convert plaintext to a UTF-8 string
Ok(String::from_utf8_lossy(plaintext_slice).to_string())
}
pub fn encrypt(plaintext: &str, key: &str, iv: &str) -> Result<String, CryptoError> {
// 1. Initialize AES-128 in CBC mode
let key_bytes = key.as_bytes();
let iv_bytes = iv.as_bytes();
let encryptor = Aes128CbcEnc::new_from_slices(key_bytes, iv_bytes).map_err(CryptoError::Aes)?;
// 2. Encrypt the plaintext with PKCS7 padding
// Allocate buffer with extra space for padding (AES block size is 16 bytes)
let plaintext_bytes = plaintext.as_bytes();
let mut buffer = vec![0u8; plaintext_bytes.len() + 16];
buffer[..plaintext_bytes.len()].copy_from_slice(plaintext_bytes);
let ciphertext = encryptor
.encrypt_padded_mut::<Pkcs7>(&mut buffer, plaintext_bytes.len())
.map_err(CryptoError::Pad)?;
// 3. Base64 encode the ciphertext
Ok(STANDARD.encode(ciphertext))
}
impl std::error::Error for DecryptError {}

2
src/jsonrpc.rs
View File

@@ -1,3 +1,5 @@
#![allow(dead_code)]
use serde::{Deserialize, Serialize};
use serde_json::Value;

2
src/jsonrpc/tactics.rs
View File

@@ -1,3 +1,5 @@
#![allow(dead_code)]
use serde::{Deserialize, Serialize};
use serde_json::{Map, Value};
use serde_with::{BoolFromInt, serde_as};

26
src/main.rs
View File

@@ -10,14 +10,14 @@ use tracing_subscriber::{EnvFilter, fmt, prelude::*};
mod admin;
mod auth;
mod context;
mod crypto;
mod db;
mod jsonrpc;
mod middleware;
mod proxy;
mod state;
use state::AppState;
use context::AppContext;
const DEFAULT_TARGET_URL: &str = "https://cloud.linspirer.com:883";
const DEFAULT_HOST: &str = "0.0.0.0";
@@ -69,31 +69,27 @@ async fn main() -> anyhow::Result<()> {
.danger_accept_invalid_certs(true)
.build()?;
// Create shared state
let state = Arc::new(AppState {
client,
target_url,
key,
iv,
jwt_secret,
db,
commands: Default::default(),
});
// Create shared context
let ctx = Arc::new(
AppContext::builder(target_url, key.as_bytes(), iv.as_bytes(), jwt_secret, db)
.with_client(client)
.build()?,
);
let proxy_middleware =
axum::middleware::from_fn_with_state(state.clone(), middleware::middleware);
axum::middleware::from_fn_with_state(ctx.clone(), middleware::middleware);
// Build our application
let app = Router::new()
// Admin routes
.nest("/admin", admin::routes::admin_routes(state.clone()))
.nest("/admin", admin::routes::admin_routes(ctx.clone()))
// Proxy Linspirer APIs
.route(
"/public-interface.php",
any(proxy::proxy_handler.layer(proxy_middleware)),
)
.layer(CompressionLayer::new().gzip(true))
.with_state(state);
.with_state(ctx);
// Run the server
info!("Proxy started on {} => {}", addr_str, target_url_str);

349
src/middleware.rs
View File

@@ -1,4 +1,3 @@
use std::str;
use std::sync::Arc;
use axum::{
@@ -7,19 +6,16 @@ use axum::{
middleware::Next,
response::{IntoResponse, Response},
};
use bytes::Bytes;
use http_body_util::BodyExt;
use serde_json::Value;
use tracing::{debug, info, warn};
use crate::{AppState, crypto, db};
enum ResponseBody {
Original(String),
Modified(Value),
}
use crate::{AppContext, db};
/// Main middleware to intercept, decrypt, modify, and log requests and responses.
pub async fn middleware(
State(state): State<Arc<AppState>>,
State(ctx): State<Arc<AppContext>>,
req: Request<axum::body::Body>,
next: Next,
) -> impl IntoResponse {
@@ -36,91 +32,31 @@ pub async fn middleware(
}
};
let (decrypted_request, method) = match str::from_utf8(&body_bytes)
.map_err(anyhow::Error::from)
.and_then(|body| process_and_log_request(body, &state.key, &state.iv))
{
Ok(request_data) => {
let method = request_data
.get("method")
.and_then(Value::as_str)
.map(str::to_string);
(request_data, method)
}
Err(e) => {
warn!("Failed to process request for logging: {}", e);
let val = Value::String("Could not decrypt request".to_string());
(val, None)
}
};
// Process request: decrypt, deserialize, modify, re-encrypt
let (processed_req_body, decrypted_request, method) = process_request(body_bytes, &ctx).await;
let req = Request::from_parts(parts, axum::body::Body::from(body_bytes));
// Pass modified request to the next handler
let req = Request::from_parts(parts, axum::body::Body::from(processed_req_body));
let res = next.run(req).await;
let (resp_parts, body_bytes) = {
let (parts, body) = res.into_parts();
let bytes = match body.collect().await {
Ok(b) => b.to_bytes(),
Err(e) => {
warn!("Failed to read response body: {}", e);
return (
StatusCode::INTERNAL_SERVER_ERROR,
"Failed to read response body".to_string(),
)
.into_response();
}
};
(parts, bytes)
};
let resp_body_text = String::from_utf8(body_bytes.clone().to_vec()).unwrap_or_default();
// Check for generic method interception first
let response_body = if let Some(method_str) = &method {
if let Ok(Some(intercepted)) = intercept_response(method_str, &resp_body_text, &state).await
{
info!("Intercepting response for method: {}", method_str);
ResponseBody::Original(intercepted)
} else if Some("com.linspirer.device.getcommand") == method.as_deref() {
// Special handling for getcommand
match handle_getcommand_response(&resp_body_text, &state).await {
Ok(new_body) => ResponseBody::Modified(new_body),
Err(e) => {
warn!(
"Failed to handle getcommand response: {}. Responding with empty command list.",
e
);
let mut empty_response =
serde_json::from_str::<Value>(&resp_body_text).unwrap_or(Value::Null);
if let Some(obj) = empty_response.as_object_mut() {
obj.insert("result".to_string(), Value::Array(vec![]));
}
ResponseBody::Modified(empty_response)
}
}
} else {
ResponseBody::Original(resp_body_text.clone())
}
} else {
ResponseBody::Original(resp_body_text.clone())
};
let (decrypted_response, final_response_body) = match response_body {
ResponseBody::Original(body_text) => {
let decrypted =
decrypt_and_format(&body_text, &state.key, &state.iv).unwrap_or_else(|_| {
Value::String("Could not decrypt or format response".to_string())
});
(decrypted, body_text)
}
ResponseBody::Modified(response_body_value) => {
let pretty_printed =
serde_json::to_string_pretty(&response_body_value).unwrap_or_default();
let encrypted = crypto::encrypt(&pretty_printed, &state.key, &state.iv)
.unwrap_or_else(|_| "Failed to encrypt modified response".to_string());
(response_body_value, encrypted)
// Process response: decrypt, deserialize, modify, re-encrypt
let (resp_parts, body) = res.into_parts();
let body_bytes = match body.collect().await {
Ok(b) => b.to_bytes(),
Err(e) => {
warn!("Failed to read response body: {}", e);
return (
StatusCode::INTERNAL_SERVER_ERROR,
"Failed to read response body".to_string(),
)
.into_response();
}
};
let (final_response_body, decrypted_response) =
process_response(body_bytes, &method, &ctx).await;
// Log the decrypted request and response
debug!(
"\nRequest:\n{}\nResponse:\n{}\n{}",
serde_json::to_string_pretty(&decrypted_request).unwrap_or_default(),
@@ -128,22 +64,21 @@ pub async fn middleware(
"-".repeat(80),
);
if let Some(method) = method {
// TODO: interception action
if let Err(e) = db::repositories::logs::create(
&state.db,
method,
decrypted_request,
decrypted_response,
"".into(),
"".into(),
)
.await
{
warn!("Failed to log request: {}", e);
}
// Write log to database
if let Err(e) = db::repositories::logs::create(
&ctx.db,
method,
decrypted_request,
decrypted_response,
"".into(),
"".into(),
)
.await
{
warn!("Failed to log request: {}", e);
}
// Build and return the final response
let mut response_builder = Response::builder().status(resp_parts.status);
if !resp_parts.headers.is_empty() {
*response_builder.headers_mut().unwrap() = resp_parts.headers;
@@ -153,34 +88,128 @@ pub async fn middleware(
.unwrap()
}
fn process_and_log_request(body: &str, key: &str, iv: &str) -> anyhow::Result<Value> {
let mut request_data: Value = serde_json::from_str(body)?;
/// Processes the incoming request body.
/// Returns the re-encrypted body for the next handler, the decrypted JSON for logging, and the method name.
async fn process_request(body_bytes: Bytes, ctx: &Arc<AppContext>) -> (String, Value, String) {
let body_str = String::from_utf8(body_bytes.to_vec()).unwrap_or_default();
if let Some(params_value) = request_data.get_mut("params")
&& let Some(params_str) = params_value.as_str()
{
let params_str_owned = params_str.to_string();
match crypto::decrypt(&params_str_owned, key, iv) {
Ok(decrypted_str) => {
let decrypted_params: Value =
serde_json::from_str(&decrypted_str).unwrap_or(Value::String(decrypted_str));
*params_value = decrypted_params;
}
Err(e) => {
*params_value = Value::String(format!("decrypt failed: {}", e));
}
}
let mut plain_request: Value = serde_json::from_str(&body_str).unwrap_or_else(|err| {
warn!(
"Failed to deserialize request body: {}. Using fallback string value.",
err
);
Value::String("Could not deserialize request".into())
});
decrypt_params(&mut plain_request, ctx);
let method = plain_request
.get("method")
.and_then(Value::as_str)
.unwrap_or_default()
.to_string();
if let Err(e) = modify_request(&mut plain_request, &method, ctx).await {
warn!("Failed to modify request: {}", e);
}
Ok(request_data)
let mut crypted_request = plain_request.clone();
encrypt_params(&mut crypted_request, ctx);
(
serde_json::to_string(&crypted_request).expect("deserialization succeeded"),
plain_request,
method,
)
}
async fn handle_getcommand_response(
body_text: &str,
state: &Arc<AppState>,
) -> anyhow::Result<Value> {
let decrypted = crypto::decrypt(body_text, &state.key, &state.iv)?;
let mut response_json: Value = serde_json::from_str(&decrypted)?;
/// Processes the outgoing response body.
/// Returns the final encrypted body for the client and the decrypted JSON for logging.
async fn process_response(
body_bytes: Bytes,
method: &str,
ctx: &Arc<AppContext>,
) -> (String, Value) {
let body_str = String::from_utf8(body_bytes.to_vec()).unwrap_or_default();
let decrypted_body = ctx.cryptor.decrypt(body_str.clone()).unwrap_or_else(|err| {
warn!(
"Failed to decrypt response body: {}. Assuming it's not encrypted.",
err
);
body_str
});
let mut response_value: Value = serde_json::from_str(&decrypted_body).unwrap_or_else(|err| {
warn!(
"Failed to deserialize response body: {}. Using string value.",
err
);
Value::String(decrypted_body.clone())
});
let decrypted = response_value.clone();
if let Err(e) = modify_response(&mut response_value, method, ctx, &decrypted_body).await {
warn!("Failed to modify response: {}", e);
}
let modified_body_str = serde_json::to_string(&response_value).unwrap_or_default();
let encrypted = ctx.cryptor.encrypt(modified_body_str);
(encrypted, decrypted)
}
/// Placeholder for request modification logic.
async fn modify_request(
_request_json: &mut Value,
_method: &str,
_ctx: &Arc<AppContext>,
) -> anyhow::Result<()> {
// TODO: Implement request modification logic based on rules or other criteria.
Ok(())
}
/// Applies modification rules to the response.
async fn modify_response(
response_json: &mut Value,
method: &str,
ctx: &Arc<AppContext>,
original_decrypted: &str,
) -> anyhow::Result<()> {
// Check for generic method interception (e.g., replace response from DB)
if let Some(intercepted) = intercept_response(method, original_decrypted, ctx).await? {
info!("Intercepting response for method: {}", method);
*response_json = serde_json::from_str(&intercepted).unwrap_or_else(|e| {
warn!(
"Failed to parse intercepted response as JSON: {}. Using as string.",
e
);
Value::String(intercepted)
});
return Ok(());
}
// Special handling for getcommand
if method == "com.linspirer.device.getcommand"
&& let Err(e) = handle_getcommand_response(response_json, ctx).await
{
warn!(
"Failed to handle getcommand response: {}. Responding with empty command list.",
e
);
if let Some(obj) = response_json.as_object_mut() {
obj.insert("result".to_string(), Value::Array(vec![]));
}
}
Ok(())
}
/// Handles the 'getcommand' response by injecting verified commands.
async fn handle_getcommand_response(
response_json: &mut Value,
ctx: &Arc<AppContext>,
) -> anyhow::Result<()> {
if let Some(result) = response_json.get_mut("result")
&& let Some(commands) = result.as_array_mut()
&& !commands.is_empty()
@@ -189,22 +218,18 @@ async fn handle_getcommand_response(
for cmd in commands.iter() {
let cmd_json = serde_json::to_string(cmd)?;
if let Err(e) =
crate::db::repositories::commands::insert(&state.db, &cmd_json, "unverified").await
crate::db::repositories::commands::insert(&ctx.db, &cmd_json, "unverified").await
{
warn!("Failed to persist command to database: {}", e);
}
info!("Added command to the queue: {:?}", cmd);
}
// Also add to in-memory queue for backwards compatibility
let mut queue = state.commands.unverified.write().await;
queue.extend(commands.drain(..));
}
if let Some(obj) = response_json.as_object_mut() {
// Get verified commands from database
let verified_cmds =
match crate::db::repositories::commands::list_by_status(&state.db, "verified").await {
match crate::db::repositories::commands::list_by_status(&ctx.db, "verified").await {
Ok(cmds) => cmds,
Err(e) => {
warn!("Failed to fetch verified commands from database: {}", e);
@@ -218,48 +243,62 @@ async fn handle_getcommand_response(
.filter_map(|c| serde_json::from_str(&c.command_json).ok())
.collect();
// Also include in-memory verified commands
let mem_verified = std::mem::take(&mut *state.commands.verified.write().await);
let mut all_verified = verified_values;
all_verified.extend(mem_verified);
obj.insert("result".to_string(), Value::Array(all_verified.clone()));
obj.insert("result".to_string(), Value::Array(verified_values));
// Clear verified commands from database after sending
if let Err(e) = crate::db::repositories::commands::clear_verified(&state.db).await {
if let Err(e) = crate::db::repositories::commands::clear_verified(&ctx.db).await {
warn!("Failed to clear verified commands from database: {}", e);
}
}
Ok(response_json)
}
fn decrypt_and_format(body_text: &str, key: &str, iv: &str) -> anyhow::Result<Value> {
let decrypted = crypto::decrypt(body_text, key, iv)?;
Ok(serde_json::from_str(&decrypted)?)
Ok(())
}
/// Checks for and applies response interception rules.
async fn intercept_response(
method: &str,
_original_response: &str,
state: &Arc<AppState>,
_orignal_response: &str,
ctx: &Arc<AppContext>,
) -> anyhow::Result<Option<String>> {
// Check if there's an interception rule for this method
let rule = crate::db::repositories::rules::find_by_method(&state.db, method).await?;
let rule = crate::db::repositories::rules::find_by_method(&ctx.db, method).await?;
match rule {
Some(r) if r.action == "replace" => {
if let Some(custom_response) = &r.custom_response {
Ok(crypto::encrypt(custom_response, &state.key, &state.iv).map(Some)?)
} else {
Ok(None)
}
}
Some(r) if r.action == "replace" => Ok(r.custom_response.as_ref().cloned()),
Some(r) if r.action == "modify" => {
// Future: Apply transformations
// For now, just pass through
// TODO: Apply modifications
Ok(None)
}
_ => Ok(None), // Passthrough
}
}
fn decrypt_params(request: &mut Value, ctx: &Arc<AppContext>) {
if let Some(params) = request.get_mut("params") {
*params = match params.take() {
Value::String(params) => {
let params = ctx.cryptor.decrypt(params).unwrap_or_else(|err| {
warn!("Failed to decrypt request params: {err}. Using fallback string value.",);
"\"Failed to decrypt params\"".to_string()
});
serde_json::from_str(&params).unwrap_or_else(|_| {
Value::String("Failed to deserialize decrypted params".into())
})
}
other => {
warn!("'params' is not an encrypted string");
other
}
};
};
}
fn encrypt_params(request: &mut Value, ctx: &Arc<AppContext>) {
if let Some(params) = request.get_mut("params") {
let plaintext = serde_json::to_string(params).unwrap_or_else(|err| {
warn!("Failed to serialize params: {err}. Using fallback string value.");
"".to_string()
});
*params = Value::String(ctx.cryptor.encrypt(plaintext));
};
}

4
src/proxy.rs
View File

@@ -8,10 +8,10 @@ use axum::{
use http_body_util::BodyExt;
use tracing::error;
use crate::AppState;
use crate::AppContext;
pub async fn proxy_handler(
State(state): State<Arc<AppState>>,
State(state): State<Arc<AppContext>>,
OriginalUri(uri): OriginalUri,
req: Request<axum::body::Body>,
) -> impl IntoResponse {

33
src/state.rs
View File

@@ -1,33 +0,0 @@
use serde_json::Value;
use sqlx::SqlitePool;
use tokio::sync::RwLock;
pub struct AppState {
pub client: reqwest::Client,
pub target_url: reqwest::Url,
pub key: String,
pub iv: String,
pub jwt_secret: String,
pub db: SqlitePool,
pub commands: Commands,
}
pub struct Commands {
pub unverified: RwLock<Vec<Value>>,
pub verified: RwLock<Vec<Value>>,
}
impl Commands {
pub fn new() -> Self {
Self {
unverified: RwLock::default(),
verified: RwLock::default(),
}
}
}
impl Default for Commands {
fn default() -> Self {
Self::new()
}
}