fix: preserve error context in validation error handling

src/core/validations/cast.rs

@@ -31,7 +31,7 @@ pub fn validate_cast_add_body(
         Ok(CastType::TenKCast) if text_bytes.len() <= 1024 => {
             return Err(ValidationError::TextTooLongFor10kCast);
         }
-        Err(_) => {
+        Err(e) => {
             return Err(ValidationError::InvalidCastType);
         }
         _ => {}

src/core/validations/error.rs

@@ -154,4 +154,10 @@ pub enum ValidationError {
     InvalidStorageUnitType,
     #[error("num storage units too large")]
     ExceededMaxStorageUnits,
+    #[error("Failed to decode protobuf data: {0}")]
+    DecodeError(String),
+    #[error("Failed to verify signature: {0}")]
+    SignatureVerificationError(String),
+    #[error("Failed to verify claim signature: {0}")]
+    ClaimSignatureVerificationError(String),
 }

src/core/validations/message.rs

@@ -101,8 +101,8 @@ pub fn validate_message(
             Ok(data) => {
                 message_data = data.clone();
             }
-            Err(_) => {
-                return Err(ValidationError::InvalidData);
+            Err(e) => {
+                return Err(ValidationError::DecodeError(e.to_string()));
             }
         }
     } else {

src/core/validations/verification.rs

@@ -315,7 +315,7 @@ where
             Verification::Valid => Ok(()),
             Verification::Invalid => Err(ValidationError::InvalidClaimSignature),
         },
-        Err(_) => Err(ValidationError::InvalidClaimSignature),
+        Err(e) => Err(ValidationError::ClaimSignatureVerificationError(e.to_string())),
     }
 }
 
@@ -456,7 +456,7 @@ fn validate_verification_add_sol_address_signature(
 
     match public_key.unwrap().verify_strict(&full_message, &signature) {
         Ok(_) => Ok(()),
-        Err(_) => Err(ValidationError::InvalidSignature),
+        Err(e) => Err(ValidationError::SignatureVerificationError(e.to_string())),
     }
 }