chore: online-config load with standard JSON

- serde-json5 doesn't support UTF-16 surrogate pair properly
  google/serde_json5#21

crates/shadowsocks-service/Cargo.toml

@@ -196,6 +196,7 @@ smoltcp = { version = "0.12", optional = true, default-features = false, feature
 
 serde = { version = "1.0", features = ["derive"] }
 serde_json5 = "0.2"
+serde_json = "1.0"
 bson = { version = "3.0.0", features = ["serde"], optional = true }
 
 shadowsocks = { version = "1.23.2", path = "../shadowsocks", default-features = false }

crates/shadowsocks-service/src/config.rs

@@ -1458,6 +1458,7 @@ macro_rules! impl_from {
 
 impl_from!(::std::io::Error, ErrorKind::IoError, "error while reading file");
 impl_from!(serde_json5::Error, ErrorKind::JsonParsingError, "json parse error");
+impl_from!(serde_json::Error, ErrorKind::JsonParsingError, "json parse error");
 
 impl Debug for Error {
     fn fmt(&self, f: &mut Formatter) -> fmt::Result {
@@ -2568,6 +2569,12 @@ impl Config {
         Self::load_from_ssconfig(c, config_type)
     }
 
+    /// Load Config from a JSON `str`
+    pub fn load_from_json_str(s: &str, config_type: ConfigType) -> Result<Self, Error> {
+        let c = serde_json::from_str::<SSConfig>(s)?;
+        Self::load_from_ssconfig(c, config_type)
+    }
+
     /// Load Config from a File
     pub fn load_from_file<P: AsRef<Path>>(filename: P, config_type: ConfigType) -> Result<Self, Error> {
         let filename = filename.as_ref();

crates/shadowsocks-service/src/local/online_config/mod.rs

@@ -190,7 +190,7 @@ impl OnlineConfigService {
             Err(..) => return Err(io::Error::other("body contains non-utf8 bytes")),
         };
 
-        let online_config = match Config::load_from_str(&parsed_body, ConfigType::OnlineConfig) {
+        let online_config = match Config::load_from_json_str(&parsed_body, ConfigType::OnlineConfig) {
             Ok(c) => c,
             Err(err) => {
                 error!(