From 68a4c08fe91493fc9dee789f7ccc9e2f55631754 Mon Sep 17 00:00:00 2001
From: Nathan Fisher <nfisher.sr@gmail.com>
Date: Sun, 15 Jan 2023 01:13:18 -0500
Subject: [PATCH 1/2] Moved `chmod` module to `mode`; Added some types to
 `mode`

---
 src/chmod/mod.rs |  1 -
 src/lib.rs       |  2 +-
 src/mode/mod.rs  | 38 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 39 insertions(+), 2 deletions(-)
 delete mode 100644 src/chmod/mod.rs
 create mode 100644 src/mode/mod.rs

diff --git a/src/chmod/mod.rs b/src/chmod/mod.rs
deleted file mode 100644
index 1af9b14..0000000
--- a/src/chmod/mod.rs
+++ /dev/null
@@ -1 +0,0 @@
-//! Functions for parsing and managing permissions
diff --git a/src/lib.rs b/src/lib.rs
index 3acdb72..a21defb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,10 +1,10 @@
 #![warn(clippy::all, clippy::pedantic)]
 use std::{env, path::PathBuf, process, string::ToString};
 
-pub mod chmod;
 mod cmd;
 pub use cmd::Cmd;
 pub mod math;
+pub mod mode;
 pub mod pw;
 
 /// Defines the location relative to the binary where a command will be installed
diff --git a/src/mode/mod.rs b/src/mode/mod.rs
new file mode 100644
index 0000000..0215d18
--- /dev/null
+++ b/src/mode/mod.rs
@@ -0,0 +1,38 @@
+//! Functions for parsing and managing permissions
+
+#[derive(Debug, PartialEq)]
+pub enum Bits {
+    Suid = 0o4000,
+    Sgid = 0o2000,
+    Sticky = 0o1000,
+    URead = 0o400,
+    UWrite = 0o200,
+    UExec = 0o100,
+    GRead = 0o40,
+    GWrite = 0o20,
+    GExec = 0o10,
+    ORead = 0o4,
+    OWrite = 0o2,
+    OExec = 0o1,
+}
+
+#[derive(Debug, PartialEq)]
+pub enum Op {
+    Add,
+    Remove,
+    Equals,
+}
+
+#[derive(Debug, PartialEq)]
+pub enum Who {
+    User,
+    Group,
+    Other,
+    All,
+}
+
+pub struct Parser {
+    mode: u32,
+    op: Op,
+    who: Who,
+}

From c727a1b6f85b43086e1c8fd21ed28dd3f8831ded Mon Sep 17 00:00:00 2001
From: Nathan Fisher <nfisher.sr@gmail.com>
Date: Sun, 15 Jan 2023 01:28:57 -0500
Subject: [PATCH 2/2] Add mode::Parser and constructors

---
 src/mode/mod.rs | 33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/src/mode/mod.rs b/src/mode/mod.rs
index 0215d18..f681ecb 100644
--- a/src/mode/mod.rs
+++ b/src/mode/mod.rs
@@ -1,5 +1,11 @@
 //! Functions for parsing and managing permissions
 
+pub fn get_umask() -> u32 {
+    let mask = unsafe { libc::umask(0) };
+    let umask = unsafe {libc::umask(mask) };
+    umask
+}
+
 #[derive(Debug, PartialEq)]
 pub enum Bits {
     Suid = 0o4000,
@@ -33,6 +39,29 @@ pub enum Who {
 
 pub struct Parser {
     mode: u32,
-    op: Op,
-    who: Who,
+    op: Option<Op>,
+    who: Option<Who>,
+}
+
+impl Default for Parser {
+    fn default() -> Self {
+        let umask = get_umask();
+        let mut mode = 0o0777;
+        mode &= umask;
+        Self {
+            mode,
+            op: None,
+            who: None,
+        }
+    }
+}
+
+impl Parser {
+    fn new(mode: u32) -> Self {
+        Self {
+            mode,
+            op: None,
+            who: None,
+        }
+    }
 }