vars with Arc<str>

src/arcstr.rs

@@ -0,0 +1,69 @@
+use std::ffi::OsStr;
+use std::fmt::{Display, Formatter};
+use std::ops::Deref;
+use std::path::Path;
+use std::sync::Arc;
+
+#[derive(Debug, Clone, PartialEq, Ord, PartialOrd, Eq)]
+pub(crate) struct ArcStr {
+    inner: Arc<str>,
+}
+
+impl Deref for ArcStr {
+    type Target = str;
+
+    fn deref(&self) -> &Self::Target {
+        self.inner.deref()
+    }
+}
+
+impl From<&str> for ArcStr {
+    fn from(value: &str) -> Self {
+        Self {
+            inner: Arc::from(value),
+        }
+    }
+}
+
+#[allow(suspicious_double_ref_op)]
+impl From<&&str> for ArcStr {
+    fn from(value: &&str) -> Self {
+        Self {
+            inner: Arc::from(value.deref()),
+        }
+    }
+}
+
+impl AsRef<OsStr> for ArcStr {
+    fn as_ref(&self) -> &OsStr {
+        self.inner.as_ref().as_ref()
+    }
+}
+
+impl AsRef<Path> for ArcStr {
+    fn as_ref(&self) -> &Path {
+        self.inner.as_ref().as_ref()
+    }
+}
+
+impl AsRef<ArcStr> for ArcStr {
+    fn as_ref(&self) -> &ArcStr {
+        self
+    }
+}
+
+impl Display for ArcStr {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.deref())
+    }
+}
+
+impl ArcStr {
+    pub(crate) fn as_path(&self) -> &Path {
+        self.as_ref()
+    }
+
+    pub(crate) fn as_str(&self) -> &str {
+        self.inner.deref()
+    }
+}

src/common.rs

@@ -3,7 +3,6 @@ use async_stream::stream;
 use clap::Parser;
 use encoding::{label::encoding_from_whatwg_label, EncoderTrap};
 use std::{
-    collections::BTreeMap,
     fmt::Display,
     path::{Path, PathBuf},
 };
@@ -14,8 +13,6 @@ use tokio::{
 
 use futures_core::stream::Stream;
 
-pub(crate) type VarsMap = BTreeMap<String, String>;
-
 pub(crate) const UTF8_STR: &str = "utf8";
 pub(crate) const DEFAULT_ENCODING: &str = UTF8_STR;
 

src/main.rs

@@ -1,8 +1,9 @@
-use anyhow::{anyhow, Result};
+use anyhow::{anyhow, Context, Result};
 use clap::Parser;
-use common::{is_file_exist, OpenSSLProviderArg, VarsMap};
+use common::{is_file_exist, OpenSSLProviderArg};
 use crypto_provider::ICryptoProvider;
 
+mod arcstr;
 mod certs;
 mod common;
 mod crypto_provider;
@@ -14,7 +15,7 @@ use crate::certs::Certs;
 use crate::common::{AppConfig, Args};
 use crate::openssl::{external::OpenSSLExternalProvider, internal::OpenSSLInternalProvider};
 use crate::ovpn::OvpnConfig;
-use crate::vars::VarsFile;
+use crate::vars::{VarsFile, VarsMap};
 
 async fn build_client_with<T: ICryptoProvider>(config: &AppConfig, provider: T) -> Result<String> {
     let config_file = config.conf_filepath.clone();
@@ -54,20 +55,16 @@ async fn build_client_config(config: &AppConfig, vars: VarsMap) -> Result<String
 async fn main() -> Result<()> {
     let args = Args::parse();
     let config = AppConfig::from(&args);
-    let mut vars = VarsFile::from_config(&config).await?;
-    vars.parse().await?;
+    let vars = VarsFile::from_config(&config)
+        .await
+        .context("vars from config")?
+        .parse()
+        .await
+        .context("parse vars")?;
 
-    println!(
-        "found vars: {}",
-        vars.filepath
-            .to_str()
-            .ok_or(anyhow!("vars filepath to_str"))?
-    );
-    println!("loaded: {:#?}", &vars.vars);
+    println!("loaded: {:#?}", &vars);
 
-    let vars = vars.vars.ok_or(anyhow!("no vars loaded"))?;
     let config_file = build_client_config(&config, vars).await?;
-
     println!("created: {}", &config_file);
 
     Ok(())

src/openssl/external.rs

@@ -1,10 +1,12 @@
 use anyhow::{anyhow, Result};
+use std::ops::Deref;
 use std::path::PathBuf;
 
 use tokio::process::Command;
 
-use crate::common::{is_file_exist, AppConfig, VarsMap};
+use crate::common::{is_file_exist, AppConfig};
 use crate::crypto_provider::ICryptoProvider;
+use crate::vars::{IStrMap, VarsMap};
 
 pub(crate) struct OpenSSLExternalProvider {
     vars: VarsMap,
@@ -33,12 +35,11 @@ impl OpenSSLExternalProvider {
 
     pub(crate) fn from_cfg(cfg: &AppConfig, vars: VarsMap) -> Self {
         let base_dir = PathBuf::from(&cfg.base_directory);
-        let name = cfg.name.clone();
         let mut vars = vars;
 
-        vars.insert("KEY_CN".into(), name.clone());
-        vars.insert("KEY_NAME".into(), name.clone());
-        vars.insert("KEY_EMAIL".into(), cfg.email.clone());
+        vars.insert("KEY_CN", &cfg.name);
+        vars.insert("KEY_NAME", &cfg.name);
+        vars.insert("KEY_EMAIL", &cfg.email);
 
         let openssl_cnf = base_dir.join(
             std::env::var(&cfg.openssl_cnf_env)
@@ -87,7 +88,7 @@ impl ICryptoProvider for OpenSSLExternalProvider {
                 "-batch",
             ])
             .current_dir(&self.base_dir)
-            .envs(&self.vars)
+            .envs(self.vars.deref())
             .status()
             .await?;
 
@@ -123,7 +124,7 @@ impl ICryptoProvider for OpenSSLExternalProvider {
                 "-batch",
             ])
             .current_dir(&self.base_dir)
-            .envs(&self.vars)
+            .envs(self.vars.deref())
             .status()
             .await?;
 

src/openssl/internal.rs

@@ -16,13 +16,14 @@ use std::path::{Path, PathBuf};
 use tokio::fs;
 
 use crate::{
-    common::{is_file_exist, read_file, AppConfig, VarsMap},
+    common::{is_file_exist, read_file, AppConfig},
     crypto_provider::ICryptoProvider,
 };
 
 use lazy_static::lazy_static;
 use std::collections::HashMap;
 
+use crate::vars::{IStrMap, VarsMap};
 use chrono::{Datelike, Days, Timelike, Utc};
 
 lazy_static! {
@@ -117,15 +118,13 @@ impl OpenSSLInternalProvider {
     }
 
     pub(crate) fn try_from_cfg(cfg: &AppConfig, vars: VarsMap) -> Result<Self> {
-        let name = cfg.name.clone();
         let mut vars = vars;
 
-        vars.insert("KEY_CN".into(), name.clone());
-        vars.insert("KEY_NAME".into(), name.clone());
-        vars.insert("KEY_EMAIL".into(), cfg.email.clone());
+        vars.insert("KEY_CN", &cfg.name);
+        vars.insert("KEY_NAME", &cfg.name);
+        vars.insert("KEY_EMAIL", &cfg.email);
 
-        let default_key_size = "2048".to_string();
-        let key_size_s = vars.get("KEY_SIZE").unwrap_or(&default_key_size);
+        let key_size_s = vars.get(&"KEY_SIZE").unwrap_or("2048");
         let key_size: u32 = key_size_s.parse().context("parse key size error")?;
 
         let encoding = cfg.encoding.clone();
@@ -190,9 +189,9 @@ impl OpenSSLInternalProvider {
         for (&key, &var) in KEYMAP.iter() {
             let value = self
                 .vars
-                .get(var)
+                .get(&var)
                 .ok_or(anyhow!("variable not set: {}", var))?;
-            name_builder.append_entry_by_text(key, value).unwrap();
+            name_builder.append_entry_by_text(key, value)?;
         }
         Ok(name_builder.build())
     }
@@ -208,10 +207,10 @@ impl OpenSSLInternalProvider {
         let key_extended_ext = ExtendedKeyUsage::new().client_auth().build()?;
 
         let mut san_extension = SubjectAlternativeName::new();
-        if let Some(name) = vars.get("KEY_NAME") {
+        if let Some(name) = vars.get(&"KEY_NAME") {
             san_extension.dns(name);
         }
-        if let Some(email) = vars.get("KEY_EMAIL") {
+        if let Some(email) = vars.get(&"KEY_EMAIL") {
             san_extension.email(email);
         }
         let san_ext = san_extension.build(context).context("build san")?;

src/vars.rs

@@ -3,38 +3,95 @@ use regex::Regex;
 use std::{path::PathBuf, pin::Pin};
 use tokio::pin;
 
+use crate::arcstr::ArcStr;
+use crate::common::{read_file_by_lines, AppConfig};
 use futures_util::stream::StreamExt;
+use std::collections::BTreeMap;
+use std::fmt::{Debug, Formatter};
+use std::ops::Deref;
+use std::path::Path;
 
-use crate::common::{read_file_by_lines, AppConfig, VarsMap};
+pub(crate) type ArcVarsMap = BTreeMap<ArcStr, ArcStr>;
+
+#[derive(Clone, PartialEq, Ord, PartialOrd, Eq)]
+pub(crate) struct VarsMap(ArcVarsMap);
+
+pub(crate) trait IStrMap {
+    fn get<S: AsRef<str> + Clone>(&self, key: &S) -> Option<&str>;
+    fn insert<S: AsRef<str> + Clone>(&mut self, key: S, value: S) -> Option<S>;
+}
+
+impl IStrMap for VarsMap {
+    fn get<S: AsRef<str> + Clone>(&self, key: &S) -> Option<&str> {
+        self.0.get(&ArcStr::from(key.as_ref())).map(|x| x.as_str())
+    }
+
+    fn insert<S: AsRef<str> + Clone>(&mut self, key: S, value: S) -> Option<S> {
+        let key = ArcStr::from(key.as_ref());
+        let value2 = ArcStr::from(value.clone().as_ref());
+        self.0.insert(key, value2).and(Some(value))
+    }
+}
+
+impl VarsMap {
+    pub(crate) fn filepath(&self) -> Option<&str> {
+        self.get(&"__file__")
+    }
+
+    #[allow(dead_code)]
+    pub(crate) fn encoding(&self) -> Option<&str> {
+        self.get(&"__encoding__")
+    }
+}
+
+impl Deref for VarsMap {
+    type Target = BTreeMap<ArcStr, ArcStr>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl Debug for VarsMap {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        let debug_map: BTreeMap<_, _> =
+            self.iter().map(|(k, v)| (k.as_str(), v.as_str())).collect();
+        debug_map.fmt(f)
+    }
+}
 
 pub(crate) struct VarsFile {
-    pub(crate) filepath: PathBuf,
-    pub(crate) vars: Option<VarsMap>,
-    pub(crate) encoding: String,
+    pub(crate) filepath: ArcStr,
+    pub(crate) encoding: ArcStr,
 }
 
 impl VarsFile {
-    async fn from_file(filepath: &PathBuf, encoding: String) -> Result<Self> {
-        let metadata = tokio::fs::metadata(&filepath).await.context(format!(
-            "file not found {}",
-            filepath.to_str().expect("str")
-        ))?;
+    async fn from_file<P>(filepath: P, encoding: ArcStr) -> Result<Self>
+    where
+        P: AsRef<Path>,
+    {
+        let filepath_str = filepath
+            .as_ref()
+            .to_str()
+            .ok_or(anyhow!("filepath to str"))?;
+        let metadata = tokio::fs::metadata(filepath_str)
+            .await
+            .context(format!("config file not found: {}", &filepath_str))?;
         if !metadata.is_file() {
-            Err(anyhow!("{} is not a file", filepath.to_str().expect("str")))?
+            Err(anyhow!("config is not a file {}", &filepath_str))?;
         }
         Ok(VarsFile {
-            filepath: filepath.to_path_buf(),
-            vars: None,
+            filepath: ArcStr::from(filepath_str),
             encoding,
         })
     }
 
-    async fn from_dir(dir: PathBuf, encoding: String) -> Result<Self> {
-        let filepath = dir.join("vars");
-        let err_context = format!(
-            "vars or vars.bat file not found in {}",
-            dir.to_str().expect("str")
-        );
+    async fn from_dir<P>(dir: P, encoding: ArcStr) -> Result<Self>
+    where
+        P: AsRef<Path>,
+    {
+        let filepath = dir.as_ref().join("vars");
+        let err_context = "vars or vars.bat file not found";
 
         match Self::from_file(&filepath, encoding.clone()).await {
             Ok(res) => Ok(res),
@@ -47,35 +104,38 @@ impl VarsFile {
     pub(crate) async fn from_config(config: &AppConfig) -> Result<Self> {
         Self::from_dir(
             PathBuf::from(&config.base_directory),
-            config.encoding.clone(),
+            ArcStr::from(config.encoding.as_str()),
         )
         .await
     }
 
-    pub(crate) async fn parse(&mut self) -> Result<()> {
-        let mut result = VarsMap::new();
-        let lines = read_file_by_lines(&self.filepath, &self.encoding).await?;
+    pub(crate) async fn parse(&self) -> Result<VarsMap> {
+        let mut result = ArcVarsMap::new();
+        result.insert("__file__".into(), self.filepath.clone());
+        result.insert("__encoding__".into(), self.encoding.clone());
+
+        let lines = read_file_by_lines(&self.filepath.as_path(), &self.encoding)
+            .await
+            .context("vars read error")?;
         let lines = Pin::from(lines);
         pin!(lines);
 
-        let re_v2 =
-            Regex::new(r#"^(export|set)\s\b(?P<key>[\w\d_]+)\b=\s?"?(?P<value>[^\#]+?)"?$"#)
-                .context("regex v2")?;
-        let re_v3 = Regex::new(r"^set_var\s(?P<key1>[\w\d_]+)\s+(?P<value1>[^\#]+?)$")
-            .context("regex v3")?;
+        let re_v2 = Regex::new(r#"^(export|set)\s\b(?P<key>[\w\d_]+)\b=\s?"?(?P<value>[^#]+?)"?$"#)
+            .context("regex v2")
+            .context("re_v2 error")?;
+        let re_v3 = Regex::new(r"^set_var\s(?P<key1>[\w\d_]+)\s+(?P<value1>[^#]+?)$")
+            .context("regex v3")
+            .context("re_v3 error")?;
 
         while let Some(line) = lines.next().await {
-            if let Some(caps) = re_v2.captures(line.as_str()) {
-                result.insert(caps["key"].to_string(), caps["value"].to_string());
+            for re in [&re_v2, &re_v3].iter() {
+                if let Some(caps) = re.captures(line.as_str()) {
+                    let [key, value] = [&caps["key"], &caps["value"]].map(ArcStr::from);
+                    result.insert(key, value);
                     continue;
                 }
-
-            if let Some(caps) = re_v3.captures(line.as_str()) {
-                result.insert(caps["key"].to_string(), caps["value"].to_string());
-            };
             }
-
-        self.vars = Some(result);
-        Ok(())
+        }
+        Ok(VarsMap(result))
     }
 }