slight refactor

src/help.rs

@@ -1,10 +0,0 @@
-pub fn help() {
-  let help = 
-"Usage:
-    crab [-d] command [args]
-Options:
-    -v --version    Get the current version of the package
-    -h --help       Generates the crab help message
-    -d              If your user is set to persist, dont save persistance";
-  println!("{}", help);
-}

src/main.rs

@@ -14,7 +14,6 @@ const ERROR_RUN_ROOT:       u8 = 6;
 
 mod persist;
 mod flags;
-mod help;
 mod secure;
 
 fn main() -> ExitCode {
@@ -22,7 +21,7 @@ fn main() -> ExitCode {
     let flags = match flags::parse(&args[1..]) {
         Some(data) => data,
         None => {
-            help::help();
+            help();
             return ExitCode::from(ERROR_ARGS);
         }
     };
@@ -31,7 +30,7 @@ fn main() -> ExitCode {
         return ExitCode::SUCCESS;
     }
     if flags.help {
-        help::help();
+        help();
         return ExitCode::SUCCESS;
     }
     if args.len() - flags.arg_count < 2 {
@@ -74,6 +73,17 @@ fn main() -> ExitCode {
     ExitCode::SUCCESS
 }
 
+fn help() {
+    let help = 
+"Usage:
+    crab [-d] command [args]
+Options:
+    -v --version    Get the current version of the package
+    -h --help       Generates the crab help message
+    -d              If your user is set to persist, dont save persistance";
+    println!("{}", help);
+}
+
 struct Config {
     users: Vec<(String, bool)>
 }

src/persist.rs

@@ -21,7 +21,7 @@ pub fn get_persist(user: &str) -> bool {
 pub fn set_persist(user: &str) {
   let mut json = match get_terminal_config() {
       Some(data) => data,
-      None => return
+      None => serde_json::from_str("{}").unwrap()
   };
   json[user] = Value::from(now());
   let id = match get_terminal_process() {
@@ -30,22 +30,22 @@ pub fn set_persist(user: &str) {
   };
   match secure::write_file(PERSIST_PATH, &format!("{}", id), &json.to_string())  {
     Ok(_) => {},
-    Err(e) => {
-        eprintln!("Internal Error: {}", e)
+    Err(_) => {
+        eprintln!("crab: An Internal Has Error")
     }
   };
 }
 
 fn get_terminal_process() -> Option<i32> {
-  let id: i32 = match std::process::id().try_into() {
+  let pid: i32 = match std::process::id().try_into() {
       Ok(data) => data,
       Err(_) => return None
   };
-  let stat = match procinfo::pid::stat(id) {
+  let pid_stat = match procinfo::pid::stat(pid) {
       Ok(data) => data,
       Err(_) => return None
   };
-  Some(stat.session)
+  Some(pid_stat.session)
 }
 
 fn get_terminal_config() -> Option<Value> {

src/secure.rs

@@ -1,46 +1,40 @@
-use std::{os::{unix::prelude::PermissionsExt, linux::fs::MetadataExt}, fs, io::ErrorKind};
+use std::{os::{unix::prelude::PermissionsExt, linux::fs::MetadataExt}, fs, io};
 use nix::unistd;
 
-pub fn write_file(dir: &str, file: &str, data: &str) -> Result<(), Box<dyn std::error::Error>> {
-  std::fs::create_dir_all(dir)?;
-  make_file_root(dir)?;
+pub fn write_file(dir: &str, file: &str, data: &str) -> Result<(), io::Error> {
+  fs::create_dir_all(dir)?;
+  set_file_permissions(0, 0, 0o100600, dir)?;
   let path = path(dir, file);
-  std::fs::write(&path, "")?;
-  make_file_root(&path)?;
-  std::fs::write(&path, data)?;
+  fs::write(&path, "")?;
+  set_file_permissions(0, 0, 0o100600, &path)?;
+  fs::write(&path, data)?;
   Ok(())
 }
 
 pub fn read_file(dir: &str, file: &str) -> Option<String> {
   let path = path(dir,file);
-  if !is_file_root(&path) {
+  if !check_file_permissions(0, 0, 0o100600, &path) {
       return None;
   }
-  match std::fs::read_to_string(&path) {
+  match fs::read_to_string(&path) {
       Ok(data) => return Some(data),
       Err(_) => return None
   };
 }
 
-fn make_file_root(path: &str) -> Result<(), Box<dyn std::error::Error>> {
-  unistd::chown(std::path::Path::new(path), Some(unistd::Uid::from(0)), Some(unistd::Gid::from(0)))?;
-  let metadata = std::fs::metadata(path)?;
+fn set_file_permissions(uid: u32, gid: u32, mode: u32, path: &str) -> Result<(), io::Error> {
+  unistd::chown(std::path::Path::new(path), Some(unistd::Uid::from(uid)), Some(unistd::Gid::from(gid)))?;
+  let metadata = fs::metadata(path)?;
   let mut perms = metadata.permissions();
-  perms.set_mode(0o100600);
+  perms.set_mode(mode);
   fs::set_permissions(path, perms)?;
   Ok(())
 }
 
-fn is_file_root(path: &str) -> bool {
-  return check_file_permissions(0, 0, 0o100600, path);
-}
-
 fn check_file_permissions(uid: u32, gid: u32, mode: u32, path: &str) -> bool {
-  let metadata = match std::fs::metadata(path) {
+  let metadata = match fs::metadata(path) {
     Ok(data) => data,
-    Err(e) => {
-        return e.kind() == ErrorKind::NotFound
-    }
+    Err(_) => return false
   };
   let perms = metadata.permissions();
   return perms.mode() == mode && metadata.st_uid() == uid && metadata.st_gid() == gid;