diff --git a/backend/src/main.rs b/backend/src/main.rs
index e4544e7..259e737 100644
--- a/backend/src/main.rs
+++ b/backend/src/main.rs
@@ -1,11 +1,12 @@
 use rocket::fs::NamedFile;
+use rocket::fs::TempFile;
 use rocket::http::Method;
 use rocket::http::Status;
 use rocket::response::Redirect;
 use rocket::response::{Responder, status};
 use rocket::serde::{Deserialize, json::Json};
 use rocket::uri;
-use rocket::{self, get, launch, post, routes};
+use rocket::{self, get, launch, post, put, routes};
 use rocket_cors::{AllowedOrigins, CorsOptions};
 use std::env;
 use std::path::Path;
@@ -16,6 +17,12 @@ use std::path::PathBuf;
 struct GenerationRequest<'r> {
     directory: &'r str,
     common_name: &'r str,
+    #[serde(default)]
+    email: &'r str,
+    #[serde(default)]
+    days: u32,
+    #[serde(default)]
+    use_openssl: Option<bool>,
 }
 
 #[derive(Responder)]
@@ -90,11 +97,10 @@ async fn list_directories() -> Result<Json<Vec<String>>, status::Custom<String>>
     let mut directories = Vec::new();
     while let Ok(Some(entry)) = reader.next_entry().await {
         let path = entry.path();
-        if check_is_valid_directory(&path).await.is_ok() {
-            if let Some(name) = path.file_name() {
+        if check_is_valid_directory(&path).await.is_ok()
+            && let Some(name) = path.file_name() {
                 directories.push(name.to_str().unwrap().to_string())
             }
-        }
     }
 
     Ok(Json(directories))
@@ -156,6 +162,37 @@ async fn get_file(directory: &str, file: &str) -> Result<NamedFile, status::NotF
         .map_err(|e| status::NotFound(e.to_string()))
 }
 
+#[put("/put/<directory>/<name>", format = "plain", data = "<file>")]
+async fn put_file(directory: &str, name: &str, mut file: TempFile<'_>) -> status::Custom<String> {
+    let dir = Path::new(&get_base_directory()).join(directory);
+    if check_is_valid_directory(&dir).await.is_err() {
+        return status::Custom(
+            Status::BadRequest,
+            "The specified directory is not valid".into(),
+        );
+    }
+
+    let dir = dir.join("config");
+    let path = dir.join(name);
+
+    // check if the file exists
+    match tokio::fs::metadata(&path).await {
+        Ok(meta) if meta.is_file() => {}
+        _ => {
+            return status::Custom(Status::NotFound, "The specified file is not found".into());
+        }
+    }
+
+    if let Err(msg) = file.persist_to(&path).await {
+        return status::Custom(
+            Status::InternalServerError,
+            format!("Failed to write file: {}", msg),
+        );
+    }
+
+    status::Custom(Status::NoContent, "".into())
+}
+
 #[post("/generate", data = "<request>")]
 async fn generate(request: Json<GenerationRequest<'_>>) -> Result<NamedFile, GenerationError> {
     let dir = Path::new(&get_base_directory()).join(request.directory);
@@ -163,12 +200,25 @@ async fn generate(request: Json<GenerationRequest<'_>>) -> Result<NamedFile, Gen
 
     let generator_bin = env::var("GENERATOR_BIN").unwrap_or("peazyrsa".into());
     let mut cmd = tokio::process::Command::new(generator_bin);
-    if env::var("USE_OPENSSL").unwrap_or("no".into()) == "yes" {
+
+    let mut use_openssl = env::var("USE_OPENSSL").unwrap_or("no".into()) == "yes";
+    if let Some(req_use_openssl) = request.use_openssl {
+        use_openssl = req_use_openssl;
+    }
+    if use_openssl {
         let openssl_bin = env::var("OPENSSL_BIN").unwrap_or("openssl".into());
         cmd.arg("--with-openssl").arg(openssl_bin);
     }
     cmd.arg("-d").arg(&dir).arg(request.common_name);
 
+    if !request.email.is_empty() {
+        cmd.arg("--email").arg(request.email);
+    }
+
+    if request.days > 0 {
+        cmd.arg("--days").arg(request.days.to_string());
+    }
+
     // execute the command and check error code
     let status = cmd
         .status()
@@ -225,7 +275,7 @@ fn rocket() -> _ {
     let cors = CorsOptions::default()
         .allowed_origins(AllowedOrigins::all())
         .allowed_methods(
-            vec![Method::Get, Method::Post]
+            vec![Method::Get, Method::Post, Method::Put]
                 .into_iter()
                 .map(From::from)
                 .collect(),
@@ -235,7 +285,13 @@ fn rocket() -> _ {
     rocket::build()
         .mount(
             "/api/v1",
-            routes![list_directories, list_directory, get_file, generate],
+            routes![
+                list_directories,
+                list_directory,
+                get_file,
+                put_file,
+                generate
+            ],
         )
         .attach(cors.to_cors().unwrap())
         .mount("/", routes![index_redirect, frontend])