.gitignore

@@ -1,3 +1 @@
 /target
-/.env.ps1
-/.vscode

src/certs.rs

@@ -1,89 +0,0 @@
-use anyhow::{anyhow, Result};
-
-use std::{path::PathBuf, sync::Arc};
-
-use crate::common::{is_file_exist, read_file, write_file, AppConfig};
-use crate::crypto::ICryptoProvider;
-
-pub(crate) struct Certs<T>
-where
-    T: ICryptoProvider,
-{
-    pub(crate) encoding: String,
-    pub(crate) ca_file: PathBuf,
-    pub(crate) key_file: PathBuf,
-    pub(crate) cert_file: PathBuf,
-    pub(crate) config_file: PathBuf,
-    pub(crate) template_file: PathBuf,
-    pub(crate) provider: Arc<T>,
-}
-
-impl<T> Certs<T>
-where
-    T: ICryptoProvider,
-{
-    pub(crate) fn new(cfg: &AppConfig, provider: T) -> Self {
-        let base_dir = PathBuf::from(&cfg.base_directory);
-        let keys_dir = base_dir.clone().join(cfg.keys_subdir.clone());
-        let config_dir = base_dir.clone().join(cfg.config_subdir.clone());
-        let name = cfg.name.clone();
-
-        Certs {
-            encoding: cfg.encoding.clone(),
-            ca_file: keys_dir.join(cfg.ca_filename.clone()),
-            key_file: keys_dir.join(format!("{}.key", &name)),
-            cert_file: keys_dir.join(format!("{}.crt", &name)),
-            config_file: config_dir.join(format!("{}.ovpn", &name)),
-            template_file: base_dir.clone().join(cfg.template_file.clone()),
-            provider: Arc::new(provider),
-        }
-    }
-
-    async fn is_config_exists(&self) -> bool {
-        is_file_exist(&self.config_file).await
-    }
-
-    pub(crate) async fn request(&self) -> Result<()> {
-        self.provider.request().await
-    }
-
-    pub(crate) async fn sign(&self) -> Result<()> {
-        self.provider.sign().await
-    }
-
-    pub(crate) async fn build_client_config(&self) -> Result<bool> {
-        if self.is_config_exists().await {
-            return Ok(false);
-        }
-
-        self.request().await?;
-        self.sign().await?;
-
-        let (template_file, ca_file, cert_file, key_file) = (
-            self.template_file.clone(),
-            self.ca_file.clone(),
-            self.cert_file.clone(),
-            self.key_file.clone(),
-        );
-        let enc = self.encoding.clone();
-        let (enc1, enc2, enc3, enc4) = (enc.clone(), enc.clone(), enc.clone(), enc.clone());
-
-        if let (Ok(Ok(template)), Ok(Ok(ca)), Ok(Ok(cert)), Ok(Ok(key))) = tokio::join!(
-            tokio::spawn(read_file(template_file, enc1)),
-            tokio::spawn(read_file(ca_file, enc2)),
-            tokio::spawn(read_file(cert_file, enc3)),
-            tokio::spawn(read_file(key_file, enc4))
-        ) {
-            let text = template
-                .replace("{{ca}}", ca.trim())
-                .replace("{{cert}}", cert.trim())
-                .replace("{{key}}", key.trim());
-
-            write_file(&self.config_file, text, &self.encoding).await?;
-
-            Ok(true)
-        } else {
-            Err(anyhow!("files read error"))
-        }
-    }
-}

src/common.rs

@@ -1,198 +0,0 @@
-use anyhow::{anyhow, Context, Result};
-use async_stream::stream;
-use clap::Parser;
-use encoding::{label::encoding_from_whatwg_label, EncoderTrap};
-use std::{
-    collections::BTreeMap,
-    path::{Path, PathBuf},
-};
-use tokio::{
-    fs::{self, File},
-    io::{AsyncBufReadExt, BufReader},
-};
-
-use futures_core::stream::Stream;
-
-pub(crate) type VarsMap = BTreeMap<String, String>;
-
-#[derive(Parser)]
-#[command(author, version, about, long_about = None)]
-pub(crate) struct Args {
-    /// new client name
-    pub(crate) name: String,
-
-    /// pki directory
-    #[arg(short, long)]
-    pub(crate) directory: Option<String>,
-
-    /// client email
-    #[arg(short, long)]
-    pub(crate) email: Option<String>,
-
-    /// files encoding
-    #[arg(short = 'c', long)]
-    pub(crate) encoding: Option<String>,
-
-    /// keys subdir
-    #[arg(long, default_value = "keys")]
-    pub(crate) keys_dir: String,
-
-    /// config subdir
-    #[arg(long, default_value = "config")]
-    pub(crate) config_dir: String,
-
-    /// valid days
-    #[arg(long, default_value = "30650")]
-    pub(crate) days: u32,
-
-    /// openssl binary
-    #[arg(long, default_value = "openssl")]
-    pub(crate) openssl: String,
-
-    /// template file
-    #[arg(long, default_value = "template.ovpn")]
-    pub(crate) template_file: String,
-}
-
-pub(crate) struct AppConfig {
-    pub(crate) encoding: String,
-    pub(crate) req_days: u32,
-    pub(crate) keys_subdir: String,
-    pub(crate) config_subdir: String,
-    pub(crate) template_file: String,
-    pub(crate) openssl_default_cnf: String,
-    pub(crate) openssl_cnf_env: String,
-    pub(crate) ca_filename: String,
-    pub(crate) default_email_domain: String,
-    pub(crate) openssl: String,
-    pub(crate) base_directory: String,
-    pub(crate) email: String,
-    pub(crate) name: String,
-}
-
-impl Default for AppConfig {
-    fn default() -> Self {
-        Self {
-            encoding: "cp866".into(),
-            req_days: 30650,
-            keys_subdir: "keys".into(),
-            config_subdir: "config".into(),
-            template_file: "template.ovpn".into(),
-            openssl_default_cnf: "openssl-1.0.0.cnf".into(),
-            openssl_cnf_env: "KEY_CONFIG".into(),
-            ca_filename: "ca.crt".into(),
-            default_email_domain: "example.com".into(),
-            openssl: "openssl".into(),
-            base_directory: ".".into(),
-            email: "name@example.com".into(),
-            name: "user".into(),
-        }
-    }
-}
-
-impl From<&Args> for AppConfig {
-    fn from(args: &Args) -> Self {
-        let defaults = Self::default();
-
-        let base_directory = args
-            .directory
-            .as_ref()
-            .unwrap_or(&defaults.base_directory)
-            .clone();
-        let email = args.email.clone().unwrap_or(format!(
-            "{}@{}",
-            &args.name,
-            defaults.default_email_domain.clone()
-        ));
-        let encoding = if let Some(enc) = args.encoding.clone() {
-            enc.to_string()
-        } else {
-            defaults.encoding.clone()
-        };
-        let name = args.name.clone();
-        let openssl = args.openssl.clone();
-        let template_file = args.template_file.clone();
-        let req_days = args.days;
-        let keys_subdir = args.keys_dir.clone();
-        let config_subdir = args.config_dir.clone();
-
-        Self {
-            base_directory,
-            email,
-            encoding,
-            name,
-            openssl,
-            template_file,
-            req_days,
-            keys_subdir,
-            config_subdir,
-            ..defaults
-        }
-    }
-}
-
-pub(crate) async fn is_file_exist(filepath: &PathBuf) -> bool {
-    let metadata = tokio::fs::metadata(&filepath).await;
-    if metadata.is_err() {
-        return false;
-    }
-
-    if !metadata.unwrap().is_file() {
-        return false;
-    }
-
-    true
-}
-
-pub(crate) async fn read_file<'a, S, P>(filepath: P, encoding: S) -> Result<String>
-where
-    S: AsRef<str> + std::cmp::PartialEq<&'a str>,
-    P: AsRef<Path>,
-{
-    let filepath = PathBuf::from(filepath.as_ref());
-    if encoding == "utf8" {
-        return Ok(fs::read_to_string(filepath).await?);
-    }
-
-    let enc = encoding_from_whatwg_label(encoding.as_ref()).ok_or(anyhow!("encoding not found"))?;
-
-    let bytes = fs::read(filepath).await?;
-    enc.decode(&bytes, encoding::DecoderTrap::Ignore)
-        .map_err(|_| anyhow!("could not read file"))
-}
-
-pub(crate) async fn write_file(filepath: &PathBuf, text: String, encoding: &str) -> Result<()> {
-    if encoding == "utf8" {
-        return Ok(fs::write(filepath, text).await?);
-    }
-
-    let enc = encoding_from_whatwg_label(encoding).ok_or(anyhow!("encoding not found"))?;
-    let mut bytes = Vec::new();
-    enc.encode_to(&text, EncoderTrap::Ignore, &mut bytes)
-        .map_err(|_| anyhow!("can't encode"))?;
-
-    fs::write(filepath, bytes).await.context("can't write file")
-}
-
-pub(crate) async fn read_file_by_lines(
-    filepath: &PathBuf,
-    encoding: &str,
-) -> Result<Box<dyn Stream<Item = String>>> {
-    Ok(if encoding == "utf8" {
-        let f = File::open(filepath).await?;
-        let reader = BufReader::new(f);
-        let mut lines = reader.lines();
-        Box::new(stream! {
-            while let Ok(Some(line)) = lines.next_line().await {
-                yield line
-            }
-        })
-    } else {
-        let text = read_file(filepath, encoding).await?;
-        Box::new(stream! {
-            for line in text.lines() {
-                yield line.to_string()
-            }
-        })
-    })
-}

src/crypto.rs

@@ -1,146 +0,0 @@
-use anyhow::{anyhow, Result};
-use std::path::PathBuf;
-
-use tokio::process::Command;
-
-use crate::common::{is_file_exist, AppConfig, VarsMap};
-
-pub(crate) trait ICryptoProvider {
-    async fn request(&self) -> Result<()>;
-    async fn sign(&self) -> Result<()>;
-}
-
-pub(crate) fn make_certs_provider(cfg: &AppConfig, vars: VarsMap) -> impl ICryptoProvider {
-    OpenSSLProvider::from_cfg(cfg, vars)
-}
-
-pub(crate) struct OpenSSLProvider {
-    vars: VarsMap,
-    base_dir: PathBuf,
-    openssl_cnf: PathBuf,
-    openssl: String,
-    ca_file: PathBuf,
-    req_file: PathBuf,
-    key_file: PathBuf,
-    cert_file: PathBuf,
-    req_days: u32,
-}
-
-impl OpenSSLProvider {
-    async fn is_ca_exists(&self) -> bool {
-        is_file_exist(&self.ca_file).await
-    }
-
-    async fn is_cert_exists(&self) -> bool {
-        is_file_exist(&self.cert_file).await
-    }
-
-    async fn is_req_exists(&self) -> bool {
-        is_file_exist(&self.req_file).await
-    }
-
-    pub(crate) fn from_cfg(cfg: &AppConfig, vars: VarsMap) -> Self {
-        let base_dir = PathBuf::from(&cfg.base_directory);
-        let keys_dir = base_dir.clone().join(cfg.keys_subdir.clone());
-        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());
-
-        let ca_file = keys_dir.join(cfg.ca_filename.clone());
-        let req_file = keys_dir.join(format!("{}.csr", &name));
-        let key_file = keys_dir.join(format!("{}.key", &name));
-        let cert_file = keys_dir.join(format!("{}.crt", &name));
-        let openssl_cnf = base_dir.clone().join(
-            std::env::var(cfg.openssl_cnf_env.clone()).unwrap_or(cfg.openssl_default_cnf.clone()),
-        );
-
-        Self {
-            vars,
-            base_dir,
-            openssl_cnf,
-            openssl: cfg.openssl.clone(),
-            ca_file,
-            req_file,
-            key_file,
-            cert_file,
-            req_days: cfg.req_days,
-        }
-    }
-}
-
-impl ICryptoProvider for OpenSSLProvider {
-    async fn request(&self) -> Result<()> {
-        if self.is_req_exists().await {
-            return Ok(());
-        }
-
-        if !self.is_ca_exists().await {
-            return Err(anyhow!(
-                "ca file not found: {}",
-                &self.ca_file.to_str().unwrap()
-            ));
-        }
-
-        let status = Command::new(&self.openssl)
-            .args([
-                "req",
-                "-nodes",
-                "-new",
-                "-keyout",
-                self.key_file.to_str().unwrap(),
-                "-out",
-                self.req_file.to_str().unwrap(),
-                "-config",
-                self.openssl_cnf.to_str().unwrap(),
-                "-batch",
-            ])
-            .current_dir(&self.base_dir)
-            .envs(&self.vars)
-            .status()
-            .await?;
-
-        match status.success() {
-            true => Ok(()),
-            false => Err(anyhow!("openssl req execution failed")),
-        }
-    }
-
-    async fn sign(&self) -> Result<()> {
-        if self.is_cert_exists().await {
-            return Ok(());
-        }
-
-        if !self.is_ca_exists().await {
-            return Err(anyhow!(
-                "ca file not found: {}",
-                &self.ca_file.to_str().unwrap()
-            ));
-        }
-
-        let status = Command::new(&self.openssl)
-            .args([
-                "ca",
-                "-days",
-                format!("{}", self.req_days).as_str(),
-                "-out",
-                self.cert_file.to_str().unwrap(),
-                "-in",
-                self.req_file.to_str().unwrap(),
-                "-config",
-                self.openssl_cnf.to_str().unwrap(),
-                "-batch",
-            ])
-            .current_dir(&self.base_dir)
-            .envs(&self.vars)
-            .status()
-            .await?;
-
-        match status.success() {
-            true => Ok(()),
-            false => Err(anyhow!("ssl ca execution failed")),
-        }
-    }
-}

src/main.rs

@@ -1,15 +1,516 @@
-use anyhow::{anyhow, Result};
+use anyhow::{anyhow, Context, Result};
 use clap::Parser;
+use encoding::{label::encoding_from_whatwg_label, EncoderTrap};
+use regex::Regex;
+use std::{
+    collections::BTreeMap,
+    path::{Path, PathBuf},
+    pin::Pin,
+    sync::Arc,
+};
+use tokio::{
+    fs::{self, File},
+    io::{AsyncBufReadExt, BufReader},
+};
+use tokio::{pin, process::Command};
 
-mod certs;
+use async_stream::stream;
-mod common;
-mod crypto;
-mod vars;
 
-use crate::certs::Certs;
+use futures_core::stream::Stream;
-use crate::common::{AppConfig, Args};
+use futures_util::stream::StreamExt;
-use crate::crypto::make_certs_provider;
+
-use crate::vars::VarsFile;
+#[derive(Parser)]
+#[command(author, version, about, long_about = None)]
+struct Args {
+    /// new client name
+    name: String,
+
+    /// pki directory
+    #[arg(short, long)]
+    directory: Option<String>,
+
+    /// client email
+    #[arg(short, long)]
+    email: Option<String>,
+
+    /// files encoding
+    #[arg(short = 'c', long)]
+    encoding: Option<String>,
+
+    /// keys subdir
+    #[arg(long, default_value = "keys")]
+    keys_dir: String,
+
+    /// config subdir
+    #[arg(long, default_value = "config")]
+    config_dir: String,
+
+    /// valid days
+    #[arg(long, default_value = "30650")]
+    days: u32,
+
+    /// openssl binary
+    #[arg(long, default_value = "openssl")]
+    openssl: String,
+
+    /// template file
+    #[arg(long, default_value = "template.ovpn")]
+    template_file: String,
+}
+
+struct VarsFile {
+    filepath: PathBuf,
+    vars: Option<BTreeMap<String, String>>,
+    encoding: String,
+}
+
+struct AppConfig {
+    encoding: String,
+    req_days: u32,
+    keys_subdir: String,
+    config_subdir: String,
+    template_file: String,
+    openssl_default_cnf: String,
+    openssl_cnf_env: String,
+    ca_filename: String,
+    default_email_domain: String,
+    openssl: String,
+    base_directory: String,
+    email: String,
+    name: String,
+}
+
+impl Default for AppConfig {
+    fn default() -> Self {
+        Self {
+            encoding: "cp866".into(),
+            req_days: 30650,
+            keys_subdir: "keys".into(),
+            config_subdir: "config".into(),
+            template_file: "template.ovpn".into(),
+            openssl_default_cnf: "openssl-1.0.0.cnf".into(),
+            openssl_cnf_env: "KEY_CONFIG".into(),
+            ca_filename: "ca.crt".into(),
+            default_email_domain: "example.com".into(),
+            openssl: "openssl".into(),
+            base_directory: ".".into(),
+            email: "name@example.com".into(),
+            name: "user".into(),
+        }
+    }
+}
+
+impl From<&Args> for AppConfig {
+    fn from(args: &Args) -> Self {
+        let defaults = Self::default();
+
+        let base_directory = args
+            .directory
+            .as_ref()
+            .unwrap_or(&defaults.base_directory)
+            .clone();
+        let email = args.email.clone().unwrap_or(format!(
+            "{}@{}",
+            &args.name,
+            defaults.default_email_domain.clone()
+        ));
+        let encoding = if let Some(enc) = args.encoding.clone() {
+            enc.to_string()
+        } else {
+            defaults.encoding.clone()
+        };
+        let name = args.name.clone();
+        let openssl = args.openssl.clone();
+        let template_file = args.template_file.clone();
+        let req_days = args.days;
+        let keys_subdir = args.keys_dir.clone();
+        let config_subdir = args.config_dir.clone();
+
+        Self {
+            base_directory,
+            email,
+            encoding,
+            name,
+            openssl,
+            template_file,
+            req_days,
+            keys_subdir,
+            config_subdir,
+            ..defaults
+        }
+    }
+}
+
+async fn is_file_exist(filepath: &PathBuf) -> bool {
+    let metadata = tokio::fs::metadata(&filepath).await;
+    if metadata.is_err() {
+        return false;
+    }
+
+    if !metadata.unwrap().is_file() {
+        return false;
+    }
+
+    true
+}
+
+async fn read_file<'a, S, P>(filepath: P, encoding: S) -> Result<String>
+where
+    S: AsRef<str> + std::cmp::PartialEq<&'a str>,
+    P: AsRef<Path>,
+{
+    let filepath = PathBuf::from(filepath.as_ref());
+    if encoding == "utf8" {
+        return Ok(fs::read_to_string(filepath).await?);
+    }
+
+    let enc = encoding_from_whatwg_label(encoding.as_ref()).ok_or(anyhow!("encoding not found"))?;
+
+    let bytes = fs::read(filepath).await?;
+    enc.decode(&bytes, encoding::DecoderTrap::Ignore)
+        .map_err(|_| anyhow!("could not read file"))
+}
+
+async fn write_file(filepath: &PathBuf, text: String, encoding: &str) -> Result<()> {
+    if encoding == "utf8" {
+        return Ok(fs::write(filepath, text).await?);
+    }
+
+    let enc = encoding_from_whatwg_label(encoding).ok_or(anyhow!("encoding not found"))?;
+    let mut bytes = Vec::new();
+    enc.encode_to(&text, EncoderTrap::Ignore, &mut bytes)
+        .map_err(|_| anyhow!("can't encode"))?;
+
+    fs::write(filepath, bytes).await.context("can't write file")
+}
+
+async fn read_file_by_lines(
+    filepath: &PathBuf,
+    encoding: &str,
+) -> Result<Box<dyn Stream<Item = String>>> {
+    Ok(if encoding == "utf8" {
+        let f = File::open(filepath).await?;
+        let reader = BufReader::new(f);
+        let mut lines = reader.lines();
+        Box::new(stream! {
+            while let Ok(Some(line)) = lines.next_line().await {
+                yield line
+            }
+        })
+    } else {
+        let text = read_file(filepath, encoding).await?;
+        Box::new(stream! {
+            for line in text.lines() {
+                yield line.to_string()
+            }
+        })
+    })
+}
+
+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")
+        ))?;
+        if !metadata.is_file() {
+            Err(anyhow!("{} is not a file", filepath.to_str().expect("str")))?
+        }
+        Ok(VarsFile {
+            filepath: filepath.to_path_buf(),
+            vars: None,
+            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")
+        );
+
+        match Self::from_file(&filepath, encoding.clone()).await {
+            Ok(res) => Ok(res),
+            Err(_) => Self::from_file(&filepath.with_extension("bat"), encoding.clone())
+                .await
+                .map_err(|e| e.context(err_context)),
+        }
+    }
+
+    async fn from_config(config: &AppConfig) -> Result<Self> {
+        Self::from_dir(
+            PathBuf::from(&config.base_directory),
+            config.encoding.clone(),
+        )
+        .await
+    }
+
+    async fn parse(&mut self) -> Result<()> {
+        let mut result = BTreeMap::new();
+        let lines = read_file_by_lines(&self.filepath, &self.encoding).await?;
+        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")?;
+
+        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());
+                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(())
+    }
+
+    #[allow(dead_code)]
+    fn apply(&self) -> Result<()> {
+        if let Some(vars) = self.vars.clone() {
+            for (key, value) in vars.iter() {
+                unsafe {
+                    std::env::set_var(key, value);
+                }
+            }
+        } else {
+            Err(anyhow!("vars not parsed"))?
+        }
+
+        Ok(())
+    }
+}
+
+trait ICryptoProvider {
+    async fn request(&self) -> Result<()>;
+    async fn sign(&self) -> Result<()>;
+}
+
+struct OpenSSLProvider {
+    vars: BTreeMap<String, String>,
+    base_dir: PathBuf,
+    openssl_cnf: PathBuf,
+    openssl: String,
+    ca_file: PathBuf,
+    req_file: PathBuf,
+    key_file: PathBuf,
+    cert_file: PathBuf,
+    req_days: u32,
+}
+
+impl OpenSSLProvider {
+    async fn is_ca_exists(&self) -> bool {
+        is_file_exist(&self.ca_file).await
+    }
+
+    async fn is_cert_exists(&self) -> bool {
+        is_file_exist(&self.cert_file).await
+    }
+
+    async fn is_req_exists(&self) -> bool {
+        is_file_exist(&self.req_file).await
+    }
+
+    fn from_cfg(cfg: &AppConfig, vars: BTreeMap<String, String>) -> Self {
+        let base_dir = PathBuf::from(&cfg.base_directory);
+        let keys_dir = base_dir.clone().join(cfg.keys_subdir.clone());
+        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());
+
+        let ca_file = keys_dir.join(cfg.ca_filename.clone());
+        let req_file = keys_dir.join(format!("{}.csr", &name));
+        let key_file = keys_dir.join(format!("{}.key", &name));
+        let cert_file = keys_dir.join(format!("{}.crt", &name));
+        let openssl_cnf = base_dir.clone().join(
+            std::env::var(cfg.openssl_cnf_env.clone()).unwrap_or(cfg.openssl_default_cnf.clone()),
+        );
+
+        Self {
+            vars,
+            base_dir,
+            openssl_cnf,
+            openssl: cfg.openssl.clone(),
+            ca_file,
+            req_file,
+            key_file,
+            cert_file,
+            req_days: cfg.req_days,
+        }
+    }
+}
+
+impl ICryptoProvider for OpenSSLProvider {
+    async fn request(&self) -> Result<()> {
+        if self.is_req_exists().await {
+            return Ok(());
+        }
+
+        if !self.is_ca_exists().await {
+            return Err(anyhow!(
+                "ca file not found: {}",
+                &self.ca_file.to_str().unwrap()
+            ));
+        }
+
+        let status = Command::new(&self.openssl)
+            .args([
+                "req",
+                "-nodes",
+                "-new",
+                "-keyout",
+                self.key_file.to_str().unwrap(),
+                "-out",
+                self.req_file.to_str().unwrap(),
+                "-config",
+                self.openssl_cnf.to_str().unwrap(),
+                "-batch",
+            ])
+            .current_dir(&self.base_dir)
+            .envs(&self.vars)
+            .status()
+            .await?;
+
+        match status.success() {
+            true => Ok(()),
+            false => Err(anyhow!("openssl req execution failed")),
+        }
+    }
+
+    async fn sign(&self) -> Result<()> {
+        if self.is_cert_exists().await {
+            return Ok(());
+        }
+
+        if !self.is_ca_exists().await {
+            return Err(anyhow!(
+                "ca file not found: {}",
+                &self.ca_file.to_str().unwrap()
+            ));
+        }
+
+        let status = Command::new(&self.openssl)
+            .args([
+                "ca",
+                "-days",
+                format!("{}", self.req_days).as_str(),
+                "-out",
+                self.cert_file.to_str().unwrap(),
+                "-in",
+                self.req_file.to_str().unwrap(),
+                "-config",
+                self.openssl_cnf.to_str().unwrap(),
+                "-batch",
+            ])
+            .current_dir(&self.base_dir)
+            .envs(&self.vars)
+            .status()
+            .await?;
+
+        match status.success() {
+            true => Ok(()),
+            false => Err(anyhow!("ssl ca execution failed")),
+        }
+    }
+}
+
+struct Certs<T>
+where
+    T: ICryptoProvider,
+{
+    encoding: String,
+    ca_file: PathBuf,
+    key_file: PathBuf,
+    cert_file: PathBuf,
+    config_file: PathBuf,
+    template_file: PathBuf,
+    provider: Arc<T>,
+}
+
+fn make_certs_provider(cfg: &AppConfig, vars: BTreeMap<String, String>) -> impl ICryptoProvider {
+    OpenSSLProvider::from_cfg(cfg, vars)
+}
+
+impl<T> Certs<T>
+where
+    T: ICryptoProvider,
+{
+    fn new(cfg: &AppConfig, provider: T) -> Self {
+        let base_dir = PathBuf::from(&cfg.base_directory);
+        let keys_dir = base_dir.clone().join(cfg.keys_subdir.clone());
+        let config_dir = base_dir.clone().join(cfg.config_subdir.clone());
+        let name = cfg.name.clone();
+
+        Certs {
+            encoding: cfg.encoding.clone(),
+            ca_file: keys_dir.join(cfg.ca_filename.clone()),
+            key_file: keys_dir.join(format!("{}.key", &name)),
+            cert_file: keys_dir.join(format!("{}.crt", &name)),
+            config_file: config_dir.join(format!("{}.ovpn", &name)),
+            template_file: base_dir.clone().join(cfg.template_file.clone()),
+            provider: Arc::new(provider),
+        }
+    }
+
+    async fn is_config_exists(&self) -> bool {
+        is_file_exist(&self.config_file).await
+    }
+
+    async fn request(&self) -> Result<()> {
+        self.provider.request().await
+    }
+
+    async fn sign(&self) -> Result<()> {
+        self.provider.sign().await
+    }
+
+    async fn build_client_config(&self) -> Result<bool> {
+        if self.is_config_exists().await {
+            return Ok(false);
+        }
+
+        self.request().await?;
+        self.sign().await?;
+
+        let (template_file, ca_file, cert_file, key_file) = (
+            self.template_file.clone(),
+            self.ca_file.clone(),
+            self.cert_file.clone(),
+            self.key_file.clone(),
+        );
+        let enc = self.encoding.clone();
+        let (enc1, enc2, enc3, enc4) = (enc.clone(), enc.clone(), enc.clone(), enc.clone());
+
+        if let (Ok(Ok(template)), Ok(Ok(ca)), Ok(Ok(cert)), Ok(Ok(key))) = tokio::join!(
+            tokio::spawn(read_file(template_file, enc1)),
+            tokio::spawn(read_file(ca_file, enc2)),
+            tokio::spawn(read_file(cert_file, enc3)),
+            tokio::spawn(read_file(key_file, enc4))
+        ) {
+            let text = template
+                .replace("{{ca}}", ca.trim())
+                .replace("{{cert}}", cert.trim())
+                .replace("{{key}}", key.trim());
+
+            write_file(&self.config_file, text, &self.encoding).await?;
+
+            Ok(true)
+        } else {
+            Err(anyhow!("files read error"))
+        }
+    }
+}
 
 #[tokio::main(flavor = "current_thread")]
 async fn main() -> Result<()> {

src/vars.rs

@@ -1,96 +0,0 @@
-use anyhow::{anyhow, Context, Result};
-use regex::Regex;
-use std::{path::PathBuf, pin::Pin};
-use tokio::pin;
-
-use futures_util::stream::StreamExt;
-
-use crate::common::{read_file_by_lines, AppConfig, VarsMap};
-
-pub(crate) struct VarsFile {
-    pub(crate) filepath: PathBuf,
-    pub(crate) vars: Option<VarsMap>,
-    pub(crate) encoding: String,
-}
-
-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")
-        ))?;
-        if !metadata.is_file() {
-            Err(anyhow!("{} is not a file", filepath.to_str().expect("str")))?
-        }
-        Ok(VarsFile {
-            filepath: filepath.to_path_buf(),
-            vars: None,
-            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")
-        );
-
-        match Self::from_file(&filepath, encoding.clone()).await {
-            Ok(res) => Ok(res),
-            Err(_) => Self::from_file(&filepath.with_extension("bat"), encoding.clone())
-                .await
-                .map_err(|e| e.context(err_context)),
-        }
-    }
-
-    pub(crate) async fn from_config(config: &AppConfig) -> Result<Self> {
-        Self::from_dir(
-            PathBuf::from(&config.base_directory),
-            config.encoding.clone(),
-        )
-        .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?;
-        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")?;
-
-        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());
-                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(())
-    }
-
-    #[allow(dead_code)]
-    fn apply(&self) -> Result<()> {
-        if let Some(vars) = self.vars.clone() {
-            for (key, value) in vars.iter() {
-                unsafe {
-                    std::env::set_var(key, value);
-                }
-            }
-        } else {
-            Err(anyhow!("vars not parsed"))?
-        }
-
-        Ok(())
-    }
-}