completed implementation of validation function

src/main.rs

@@ -44,6 +44,42 @@ fn validate_password(password: &str, policy: &PasswordPolicy) -> bool {
             return false;
         }
     }
+    if policy.0.charset.contains(CharSet::LOWERCASE) {
+        let mut found_lower = false;
+        for c in password.chars() {
+            if LOWERCASE_CHARS.contains(&(c as u8)) {
+                found_lower = true;
+                break;
+            }
+        }    
+        if !found_lower {
+            return false;
+        }
+    }
+    if policy.0.charset.contains(CharSet::NUMBERS) {
+        let mut found_number = false;
+        for c in password.chars() {
+            if NUMBER_CHARS.contains(&(c as u8)) {
+                found_number = true;
+                break;
+            }
+        }    
+        if !found_number {
+            return false;
+        }
+    }
+    if policy.0.charset.contains(CharSet::SYMBOLS) {
+        let mut found_symbol = false;
+        for c in password.chars() {
+            if SYMBOL_CHARS.contains(&(c as u8)) {
+                found_symbol = true;
+                break;
+            }
+        }    
+        if !found_symbol {
+            return false;
+        }
+    }
     // todo: do similar checks here
     true
 }