Create ability to run as unikernel [wip]

This enables to run `webhookey` as unikernel.

.woodpecker.yml

@@ -1,37 +0,0 @@
-pipeline:
-  fmt:
-    group: default
-    image: rust_full
-    commands:
-      - cargo fmt --all -- --check
-
-  clippy:
-    group: default
-    image: rust_full
-    commands:
-      - cargo clippy --all-features
-
-  test:
-    group: default
-    image: rust_full
-    commands:
-      - cargo test
-
-  build:
-    group: default
-    image: rust_full
-    commands:
-      - cargo build
-      - cargo build --release
-
-  build-deb:
-    group: default
-    image: rust_full
-    commands:
-      - cargo deb
-
-  doc:
-    group: default
-    image: rust_full
-    commands:
-      - cargo doc

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "webhookey"
-version = "0.1.6"
+version = "0.1.5"
 authors = ["finga <webhookey@onders.org>"]
 edition = "2021"
 license = "GPL-3.0-or-later"
@@ -11,23 +11,34 @@ description = "Trigger scripts via http(s) requests"
 tls = ["rocket/tls"]
 
 [dependencies]
-anyhow = "1.0"
-clap = { version = "4.3", features = ["derive"] }
-dirs = "4.0"
-env_logger = "0.9"
-hex = "0.4"
-hmac = "0.12"
-ipnet = { version = "2.3", features = ["serde"] }
-log = "0.4"
-regex = "1.5"
 rocket = "0.5.0-rc.1"
-run_script = "0.9"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-serde_regex = "1.1"
 serde_yaml = "0.8"
-sha2 = "0.10"
+serde_regex = "1.1"
+regex = "1.5"
+dirs = "4.0"
+anyhow = "1.0"
+log = "0.4"
+env_logger = "0.9"
+hmac = "0.11"
+sha2 = "0.9"
+hex = "0.4"
+ipnet = { version = "2.3", features = ["serde"] }
 thiserror = "1.0"
+run_script = "0.9"
+clap = "3.0.0-beta.5"
+
+[target.'cfg(target_os = "hermit")'.dependencies.hermit-sys]
+version = "0.1.*"
+default-features = false
+features = ["smoltcp"]
+
+[profile.release]
+opt-level = 3
+
+[profile.dev]
+opt-level = 1
 
 [package.metadata.deb]
 extended-description = "Webhookey receives requests in form of a so called Webhook as for example sent by Gitea. Those requests are matched against configured filters, if a filter matches, values from the header and the body can be passed to scripts as parameters which are then executed subsequently."

README.md

@@ -1,6 +1,4 @@
 # Webhookey
-![status-badge](https://ci.onders.org/api/badges/finga/webhookey/status.svg?branch=main)
-
 Webhookey is a web server listening for
 [webhooks](https://en.wikipedia.org/wiki/Webhook) as for example sent
 by Gitea's webhooks. Further, Webhookey allows you to specify rules

src/cli.rs

@@ -1,4 +1,4 @@
-use clap::Parser;
+use clap::{crate_authors, crate_version, AppSettings, Parser};
 
 #[derive(Debug, Parser)]
 pub enum Command {
@@ -7,10 +7,16 @@ pub enum Command {
 }
 
 #[derive(Debug, Parser)]
+#[clap(
+    version = crate_version!(),
+    author = crate_authors!(", "),
+    global_setting = AppSettings::InferSubcommands,
+    global_setting = AppSettings::PropagateVersion,
+)]
 pub struct Opts {
     /// Provide a path to the configuration file
-    #[arg(short, long, value_name = "FILE")]
+    #[clap(short, long, value_name = "FILE")]
     pub config: Option<String>,
-    #[command(subcommand)]
+    #[clap(subcommand)]
     pub command: Option<Command>,
 }

src/hooks.rs

@@ -3,7 +3,7 @@ use crate::{
     Config, Metrics, WebhookeyError,
 };
 use anyhow::{anyhow, bail, Result};
-use hmac::{Hmac, Mac};
+use hmac::{Hmac, Mac, NewMac};
 use log::{debug, error, info, trace, warn};
 use rocket::{
     data::{FromData, ToByteUnit},
@@ -44,8 +44,7 @@ fn validate_request(secret: &str, signature: &str, data: &[u8]) -> Result<()> {
         .map_err(|e| anyhow!("Could not create hasher with secret: {}", e))?;
     mac.update(data);
     let raw_signature = hex::decode(signature.as_bytes())?;
-    mac.verify_slice(&raw_signature)
-        .map_err(|e| anyhow!("{}", e))
+    mac.verify(&raw_signature).map_err(|e| anyhow!("{}", e))
 }
 
 #[derive(Debug, Deserialize, Serialize)]
@@ -88,7 +87,7 @@ impl Hook {
                             if let Some('}') = command_template.next() {
                                 let expr = token.trim().split(' ').collect::<Vec<&str>>();
 
-                                let replaced = match expr.first() {
+                                let replaced = match expr.get(0) {
                                     Some(&"header") => get_header_field(
                                         headers,
                                         expr.get(1).ok_or_else(|| {
@@ -316,8 +315,6 @@ pub async fn receive_hook<'a>(
                     .fetch_add(1, Ordering::Relaxed);
             }
         }
-
-        metrics.hooks_successful.fetch_add(1, Ordering::Relaxed);
     });
 
     Status::Ok

src/main.rs

@@ -1,3 +1,6 @@
+#[cfg(target_os = "hermit")]
+extern crate hermit_sys;
+
 mod cli;
 mod config;
 mod filters;
@@ -23,9 +26,9 @@ pub enum WebhookeyError {
     #[error("Could not evaluate filter request")]
     InvalidFilter,
     #[error("IO Error")]
-    Io(#[from] std::io::Error),
+    Io(std::io::Error),
     #[error("Serde Error")]
-    Serde(#[from] serde_json::Error),
+    Serde(serde_json::Error),
 }
 
 pub fn get_string(data: &serde_json::Value) -> Result<String, WebhookeyError> {