profiles: error if fan curve parse is less than 8

Closes #225

rog-profiles/src/error.rs

@@ -13,6 +13,7 @@ pub enum ProfileError {
     /// (pwm/temp, prev, next)
     ParseFanCurvePrevHigher(&'static str, u8, u8),
     ParseFanCurvePercentOver100(u8),
+    NotEnoughPoints,
     // Zbus(zbus::Error),
 }
 
@@ -24,6 +25,7 @@ impl fmt::Display for ProfileError {
             ProfileError::Read(path, error) => write!(f, "Read {}: {}", path, error),
             ProfileError::Write(path, error) => write!(f, "Write {}: {}", path, error),
             ProfileError::NotSupported => write!(f, "Not supported"),
+            ProfileError::NotEnoughPoints => write!(f, "Less than 8 curve points supplied"),
             ProfileError::NotFound(deets) => write!(f, "Not found: {}", deets),
             ProfileError::Io(detail) => write!(f, "std::io error: {}", detail),
             ProfileError::ParseProfileName => write!(f, "Invalid profile name"),

rog-profiles/src/fan_curve_set.rs

@@ -75,6 +75,10 @@ impl std::str::FromStr for CurveData {
         let mut pwm_prev = 0;
         let mut percentages = false;
 
+        if input.split(',').count() < 8 {
+            return Err(ProfileError::NotEnoughPoints);
+        }
+
         for (index, value) in input.split(',').enumerate() {
             for (select, num) in value.splitn(2, |c| c == 'c' || c == ':').enumerate() {
                 if num.contains('%') {
@@ -265,7 +269,12 @@ mod tests {
         assert_eq!(
             string.as_str(),
             "CPU: 30c:1%,49c:1%,59c:3%,69c:3%,79c:30%,89c:49%,99c:56%,109c:58%"
-        )
+        );
+
+        let curve =
+            CurveData::from_str("30c:1%,49c:2%,59c:3%,69c:4%,79c:31%,89c:49%,99c:56%");
+
+        assert!(curve.is_err());
     }
 
     #[test]