Add common error type

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "zipsign"
 description = "Sign and verify `.zip` and `.tar.gz` files with an ed25519 signing key"
-version = "0.1.0-a.0"
+version = "0.1.0-a.1"
 edition = "2021"
 authors = ["René Kijewski <[email protected]>"]
 repository = "https://github.com/Kijewski/zipsign"
@@ -22,7 +22,7 @@ thiserror = "1"
 zip = { version = "0.6", default-features = false }
 
 [workspace.dependencies.zipsign-api]
-version = "0.1.0-a.0"
+version = "0.1.0-a.1"
 path = "api"
 default-features = false
 features = ["verify-tar", "verify-zip", "sign-tar", "sign-zip"]

api/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "zipsign-api"
 description = "Sign and verify `.zip` and `.tar.gz` files with an ed25519 signing key"
-version = "0.1.0-a.0"
+version = "0.1.0-a.1"
 edition = "2021"
 authors = ["René Kijewski <[email protected]>"]
 repository = "https://github.com/Kijewski/zipsign"
@@ -10,17 +10,17 @@ license = "Apache-2.0 WITH LLVM-exception"
 [dependencies]
 base64 = { workspace = true, optional = true }
 ed25519-dalek.workspace = true
-thiserror = { workspace = true, optional = true }
+thiserror.workspace = true
 zip = { workspace = true, optional = true }
 
 [features]
 default = ["tar", "zip"]
 
-verify = ["dep:thiserror"]
+verify = []
 verify-tar = ["verify", "dep:base64"]
 verify-zip = ["verify"]
 
-sign = ["dep:thiserror"]
+sign = []
 sign-tar = ["sign", "dep:base64"]
 sign-zip = ["sign", "dep:zip"]
 

api/src/lib.rs

@@ -91,3 +91,50 @@ where
     let _: u64 = copy(input, &mut prehashed_message)?;
     Ok(prehashed_message)
 }
+
+/// A collection of all error this library can return
+#[non_exhaustive]
+#[derive(Debug, thiserror::Error)]
+#[error(transparent)]
+pub enum ZipsignError {
+    /// An error returned by [`gather_signature_data()`][self::sign::gather_signature_data]
+    #[cfg(feature = "sign")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "sign")))]
+    GatherSignatureData(#[from] self::sign::GatherSignatureDataError),
+    /// An error returned by [`read_signing_keys()`][self::sign::read_signing_keys]
+    #[cfg(feature = "sign")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "sign")))]
+    ReadSigningKeys(#[from] self::sign::ReadSigningKeysError),
+    /// An error returned by [`copy_and_sign_tar()`][self::sign::copy_and_sign_tar]
+    #[cfg(feature = "sign-tar")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "sign-tar")))]
+    SignTar(#[from] self::sign::SignTarError),
+    /// An error returned by [`copy_and_sign_zip()`][self::sign::copy_and_sign_zip]
+    #[cfg(feature = "sign-zip")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "sign-zip")))]
+    SignZip(#[from] self::sign::SignZipError),
+
+    /// No matching key/signature pair found
+    #[cfg(feature = "verify")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "verify")))]
+    NoMatch(#[from] self::verify::NoMatch),
+    /// An error returned by [`collect_keys()`][self::verify::collect_keys]
+    #[cfg(feature = "verify")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "verify")))]
+    CollectKeys(#[from] self::verify::CollectKeysError),
+    /// An error returned by [`read_signatures()`][self::verify::read_signatures]
+    #[cfg(feature = "verify")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "verify")))]
+    ReadSignatures(#[from] self::verify::ReadSignaturesError),
+    /// An error returned by [`verify_tar()`][self::verify::verify_tar]
+    #[cfg(feature = "verify-tar")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "verify-tar")))]
+    VerifyTar(#[from] self::verify::VerifyTarError),
+    /// An error retuned by [`verify_zip()`][self::verify::verify_zip]
+    #[cfg(feature = "verify-zip")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "verify-zip")))]
+    VerifyZip(#[from] self::verify::VerifyZipError),
+
+    /// An I/O occurred
+    Io(#[from] std::io::Error),
+}