labadoor-csv: Initial commit

Cargo.toml

@@ -3,4 +3,5 @@ members = [
     "labadoor-matrix",
     "labadoor-gpio",
     "labadoor-telegram",
+    "labadoor-csv",
 ]

labadoor-csv/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "labadoor-csv"
+version = "0.1.0"
+edition = "2021"
+license = "AGPL-3.0-or-later"
+
+[dependencies]
+csv = "1.1.6"
+serde = "1.0.130"
+serde_derive = "1.0.130"

labadoor-csv/src/main.rs

@@ -0,0 +1,78 @@
+use serde_derive::Deserialize;
+
+#[derive(Deserialize, Debug)]
+struct ACLEntry {
+    username: String,
+    resource: String,
+}
+
+#[derive(Deserialize, Debug)]
+struct AuthMethod {
+    username: String,
+    method: String,
+    identifier: String,
+}
+
+#[derive(Deserialize, Debug)]
+struct ResourceShortcuts {
+    username: String,
+    resource: String,
+    id: i8,
+}
+
+fn get_username(method: String, identifier: String) -> Result<String, ()> {
+    let mut ret = Err(());
+    let file = std::fs::File::open("./auth_methods.csv").unwrap();
+    let mut reader = csv::Reader::from_reader(file);
+    for result in reader.deserialize() {
+        let m: AuthMethod = result.unwrap();
+        if m.method == method && m.identifier == identifier {
+            ret = Ok(m.username);
+            break;
+        }
+    }
+    return ret;
+}
+
+fn get_resource_name(username: String, id: i8) -> Result<String, ()> {
+    let mut ret = Err(());
+    let file = std::fs::File::open("./resource_shortcuts.csv").unwrap();
+    let mut reader = csv::Reader::from_reader(file);
+    for result in reader.deserialize() {
+        let rs: ResourceShortcuts = result.unwrap();
+        if rs.username == username && rs.id == id {
+            ret = Ok(rs.resource);
+            break;
+        }
+    }
+    return ret;
+}
+
+fn auth_user(username: String, resource: String) -> Result<(), ()> {
+    let mut ret = Err(());
+    let file = std::fs::File::open("./acl_entries.csv").unwrap();
+    let mut reader = csv::Reader::from_reader(file);
+    for result in reader.deserialize() {
+        let e: ACLEntry = result.unwrap();
+        if e.username == username && e.resource == resource {
+            ret = Ok(());
+            break;
+        }
+    }
+    return ret;
+}
+
+fn main() {
+    let args: Vec<String> = std::env::args().collect();
+    let method = String::from(&args[1]);
+    let identifier = String::from(&args[2]);
+    let resource_shortcut = args[3].parse::<i8>().unwrap();
+
+    if let Ok(username) = get_username(method, identifier) {
+        if let Ok(resource_name) = get_resource_name(username.clone(), resource_shortcut) {
+            if auth_user(username, resource_name).is_ok() {
+                println!("Open Sesame!");
+            }
+        }
+    }
+}