.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 +11,22 @@ 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"
+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"
 
 [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."
@@ -37,7 +36,6 @@ assets = [
        ["config.yml", "etc/webhookey/", "644"],
        ["target/release/webhookey", "usr/bin/", "755"],
        ["README.md", "usr/share/doc/webhookey/README", "644"],
-       ["webhookey.1", "usr/share/man/man1/", "644"],
        ["debian/service", "lib/systemd/system/webhookey.service", "644"],
 ]
 conf-files = ["/etc/webhookey/config.yml"]

README.md

@@ -1,9 +1,6 @@
 # Webhookey
-![status-badge](https://ci.onders.org/api/badges/finga/webhookey/status.svg?branch=main)
+Webhookey is a web server listening for requests as for example sent by
-
+gitea's webhooks. Further, Webhookey allows you to specify rules
-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
 which are matched against the data received to trigger certain
 actions.
 
@@ -65,10 +62,7 @@ Whereas `<config_dir>` depends on the platform:
 #### Metrics
 A metrics page can optionally enabled to query stats of the currently
 running webhookey instance. Note that stats are lost between restarts
-of webhookey as those are not stored persistently. The `metrics`
+of webhookey as those are not stored persistently.
-structure is optional as well as the `ip_filter`. The `ip_filter`
-supports either `allow` or `deny` containing a list of IPv4 and IPv6
-addresses and networks.
 
 Example:
 ```yaml
@@ -104,17 +98,16 @@ hooks:
       - secret_key_02
     filter:
       or:
-        - not:
+        - json:
-            json:
             pointer: /ref
-              regex: refs/heads/dev
+            regex: refs/heads/master
         - and:
           - json:
               pointer: /ref
               regex: refs/heads/a_branch
-          - header:
+          - json:
-              field: X-Gitea-Event
+              pointer: /after
-              regex: push
+              regex: f6e5fe4fe37df76629112d55cc210718b6a55e7e
 ```
 
 ##### Command
@@ -133,16 +126,14 @@ Use values from header fields sent with the HTTP request.
 
 Example: `{{ header X-Gitea-Event }}`.
 
-##### IP Filter
+##### Allow and Deny
-Specific IPv4 and IPv6 addresses and/or ranges ranges can be allowed
+To allow or deny specific network ranges source is an optional
-or denied. The `ip_filter` is optional and has to contain either an
+configuration parameter which either contains an allow or a deny field
-`allow` or a `deny` field which contains a sequence of IPv4 or IPv6
+with sequences containing networks. Note that IPv6 addresses have to
-addresses or CIDR network ranges. Note that IPv6 addresses have to be
+be put in single quotes due to the colons.
-quoted due to the colons.
 
 Example:
 ```yaml
-ip_filter:
 allow:
   - 127.0.0.1
   - 127.0.0.1/31
@@ -150,7 +141,6 @@ ip_filter:
 ```
 
 ```yaml
-ip_filter:
 deny:
   - 127.0.0.1
   - 127.0.0.1/31
@@ -173,20 +163,10 @@ hook should be executed.
 
 ###### Conjunction Filters
 Conjunction filters contain lists of other filters.
-- `not`: Logical negation.
 - `and`: Logical conjunction.
 - `or`: Logical disjunction.
 
 ###### Concrete Filters
-- `header`:
-
-  The `header` filter matches a regular expression on a field from the
-  received http(s) request header.
-
-  - `field`: The header field which should be matched.
-  - `regex`: Regular expression which has to match the specified
-    header field.
-
 - `json`:
 
   The `json` filter matches a regular expression on a field from the

Rocket.toml

@@ -1,2 +0,0 @@
-[default]
-ident = "Webhookey"

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/config.rs

@@ -1,52 +0,0 @@
-use crate::{filters::IpFilter, hooks::Hook};
-use anyhow::{bail, Result};
-use log::info;
-use serde::{Deserialize, Serialize};
-use std::{collections::BTreeMap, fs::File};
-
-#[derive(Debug, Deserialize, Serialize)]
-#[serde(deny_unknown_fields)]
-pub struct MetricsConfig {
-    pub enabled: bool,
-    pub ip_filter: Option<IpFilter>,
-}
-
-#[derive(Debug, Deserialize, Serialize)]
-#[serde(deny_unknown_fields)]
-pub struct Config {
-    pub metrics: Option<MetricsConfig>,
-    pub hooks: BTreeMap<String, Hook>,
-}
-
-pub fn get_config() -> Result<File> {
-    // Look for config in CWD..
-    if let Ok(config) = File::open("config.yml") {
-        info!("Loading configuration from `./config.yml`");
-
-        return Ok(config);
-    }
-
-    // ..look for user path config..
-    if let Some(mut path) = dirs::config_dir() {
-        path.push("webhookey/config.yml");
-
-        if let Ok(config) = File::open(&path) {
-            info!(
-                "Loading configuration from `{}`",
-                path.to_str().unwrap_or("<path unprintable>"),
-            );
-
-            return Ok(config);
-        }
-    }
-
-    // ..look for systemwide config..
-    if let Ok(config) = File::open("/etc/webhookey/config.yml") {
-        info!("Loading configuration from `/etc/webhookey/config.yml`");
-
-        return Ok(config);
-    }
-
-    // ..you had your chance.
-    bail!("No configuration file found.");
-}

src/filters.rs

@@ -1,157 +0,0 @@
-use crate::WebhookeyError;
-use anyhow::Result;
-use ipnet::IpNet;
-use log::{debug, error, trace};
-use regex::Regex;
-use rocket::{http::HeaderMap, Request};
-use serde::{Deserialize, Serialize};
-use std::net::IpAddr;
-
-#[derive(Debug, Deserialize, Serialize)]
-#[serde(deny_unknown_fields, untagged)]
-pub enum AddrType {
-    IpAddr(IpAddr),
-    IpNet(IpNet),
-}
-
-impl AddrType {
-    pub fn matches(&self, client_ip: &IpAddr) -> bool {
-        match self {
-            AddrType::IpAddr(addr) => addr == client_ip,
-            AddrType::IpNet(net) => net.contains(client_ip),
-        }
-    }
-}
-
-#[derive(Debug, Deserialize, Serialize)]
-#[serde(deny_unknown_fields, rename_all = "lowercase")]
-pub enum IpFilter {
-    Allow(Vec<AddrType>),
-    Deny(Vec<AddrType>),
-}
-
-impl IpFilter {
-    pub fn validate(&self, client_ip: &IpAddr) -> bool {
-        match self {
-            IpFilter::Allow(list) => list.iter().any(|i| i.matches(client_ip)),
-            IpFilter::Deny(list) => !list.iter().any(|i| i.matches(client_ip)),
-        }
-    }
-}
-
-#[derive(Debug, Deserialize, Serialize)]
-pub struct HeaderFilter {
-    pub field: String,
-    #[serde(with = "serde_regex")]
-    pub regex: Regex,
-}
-
-impl HeaderFilter {
-    pub fn evaluate(&self, headers: &HeaderMap) -> Result<bool, WebhookeyError> {
-        trace!(
-            "Matching `{}` on `{}` from received header",
-            &self.regex,
-            &self.field,
-        );
-
-        if let Some(value) = headers.get_one(&self.field) {
-            if self.regex.is_match(value) {
-                debug!("Regex `{}` for `{}` matches", &self.regex, &self.field);
-
-                return Ok(true);
-            }
-        }
-
-        debug!(
-            "Regex `{}` for header field `{}` does not match",
-            &self.regex, &self.field
-        );
-
-        Ok(false)
-    }
-}
-
-#[derive(Debug, Deserialize, Serialize)]
-#[serde(deny_unknown_fields)]
-pub struct JsonFilter {
-    pub pointer: String,
-    #[serde(with = "serde_regex")]
-    pub regex: Regex,
-}
-
-impl JsonFilter {
-    pub fn evaluate(&self, data: &serde_json::Value) -> Result<bool, WebhookeyError> {
-        trace!(
-            "Matching `{}` on `{}` from received json",
-            &self.regex,
-            &self.pointer,
-        );
-
-        if let Some(value) = data.pointer(&self.pointer) {
-            if self.regex.is_match(&crate::get_string(value)?) {
-                debug!("Regex `{}` for `{}` matches", &self.regex, &self.pointer);
-
-                return Ok(true);
-            }
-        }
-
-        debug!(
-            "Regex `{}` for json field `{}` does not match",
-            &self.regex, &self.pointer
-        );
-
-        Ok(false)
-    }
-}
-
-macro_rules! interrelate {
-    ($request:expr, $data:expr, $filters:expr, $relation:ident) => {{
-        let (mut results, mut errors) = (Vec::new(), Vec::new());
-
-        $filters
-            .iter()
-            .map(|filter| filter.evaluate($request, $data))
-            .for_each(|item| match item {
-                Ok(o) => results.push(o),
-                Err(e) => errors.push(e),
-            });
-
-        if errors.is_empty() {
-            Ok(results.iter().$relation(|r| *r))
-        } else {
-            errors
-                .iter()
-                .for_each(|e| error!("Could not evaluate Filter: {}", e));
-
-            Err(WebhookeyError::InvalidFilter)
-        }
-    }};
-}
-
-#[derive(Debug, Deserialize, Serialize)]
-#[serde(deny_unknown_fields, rename_all = "lowercase")]
-pub enum FilterType {
-    Not(Box<FilterType>),
-    And(Vec<FilterType>),
-    Or(Vec<FilterType>),
-    #[serde(rename = "header")]
-    HeaderFilter(HeaderFilter),
-    #[serde(rename = "json")]
-    JsonFilter(JsonFilter),
-}
-
-impl FilterType {
-    pub fn evaluate(
-        &self,
-        request: &Request,
-        data: &serde_json::Value,
-    ) -> Result<bool, WebhookeyError> {
-        match self {
-            FilterType::Not(filter) => Ok(!filter.evaluate(request, data)?),
-            FilterType::And(filters) => interrelate!(request, data, filters, all),
-            FilterType::Or(filters) => interrelate!(request, data, filters, any),
-            FilterType::HeaderFilter(filter) => filter.evaluate(request.headers()),
-            FilterType::JsonFilter(filter) => filter.evaluate(data),
-        }
-    }
-}

src/hooks.rs

@@ -1,804 +0,0 @@
-use crate::{
-    filters::{FilterType, IpFilter},
-    Config, Metrics, WebhookeyError,
-};
-use anyhow::{anyhow, bail, Result};
-use hmac::{Hmac, Mac};
-use log::{debug, error, info, trace, warn};
-use rocket::{
-    data::{FromData, ToByteUnit},
-    futures::TryFutureExt,
-    http::{HeaderMap, Status},
-    outcome::Outcome::{self, Failure, Success},
-    post,
-    tokio::io::AsyncReadExt,
-    Data, Request, State,
-};
-use run_script::ScriptOptions;
-use serde::{Deserialize, Serialize};
-use sha2::Sha256;
-use std::{
-    collections::BTreeMap,
-    net::{IpAddr, Ipv4Addr, SocketAddr},
-    sync::atomic::Ordering,
-};
-
-fn accept_ip(hook_name: &str, client_ip: &IpAddr, ip: &IpFilter) -> bool {
-    if ip.validate(client_ip) {
-        info!("Allow hook `{}` from {}", &hook_name, &client_ip);
-        return true;
-    }
-
-    warn!("Deny hook `{}` from {}", &hook_name, &client_ip);
-    false
-}
-
-fn get_header_field<'a>(headers: &'a HeaderMap, param: &str) -> Result<&'a str> {
-    headers
-        .get_one(param)
-        .ok_or_else(|| anyhow!("Could not extract event parameter from header"))
-}
-
-fn validate_request(secret: &str, signature: &str, data: &[u8]) -> Result<()> {
-    let mut mac = Hmac::<Sha256>::new_from_slice(secret.as_bytes())
-        .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))
-}
-
-#[derive(Debug, Deserialize, Serialize)]
-#[serde(deny_unknown_fields)]
-pub struct Hook {
-    command: String,
-    signature: String,
-    ip_filter: Option<IpFilter>,
-    secrets: Vec<String>,
-    filter: FilterType,
-}
-
-impl Hook {
-    fn get_command(
-        &self,
-        hook_name: &str,
-        request: &Request,
-        data: &mut serde_json::Value,
-    ) -> Result<String> {
-        debug!("Replacing parameters for command of  hook `{}`", hook_name);
-
-        Hook::replace_parameters(&self.command, request.headers(), data)
-    }
-
-    fn replace_parameters(
-        input: &str,
-        headers: &HeaderMap,
-        data: &serde_json::Value,
-    ) -> Result<String> {
-        let mut command = String::new();
-        let command_template = &mut input.chars();
-
-        while let Some(i) = command_template.next() {
-            if i == '{' {
-                if let Some('{') = command_template.next() {
-                    let mut token = String::new();
-
-                    while let Some(i) = command_template.next() {
-                        if i == '}' {
-                            if let Some('}') = command_template.next() {
-                                let expr = token.trim().split(' ').collect::<Vec<&str>>();
-
-                                let replaced = match expr.first() {
-                                    Some(&"header") => get_header_field(
-                                        headers,
-                                        expr.get(1).ok_or_else(|| {
-                                            anyhow!("Missing parameter for `header` expression")
-                                        })?,
-                                    )?
-                                    .to_string(),
-                                    Some(pointer) => crate::get_string(
-                                        data.pointer(pointer).ok_or_else(|| {
-                                            anyhow!(
-                                                "Could not find field refered to in parameter `{}`",
-                                                pointer
-                                            )
-                                        })?,
-                                    )?,
-                                    None => bail!("Invalid expression `{}`", token),
-                                };
-
-                                command.push_str(&replaced);
-
-                                trace!("Replace `{}` with: {}", token, replaced);
-
-                                break;
-                            } else {
-                                command.push('}');
-                                command.push(i);
-                            }
-                        } else {
-                            token.push(i);
-                        }
-                    }
-                } else {
-                    command.push('{');
-                    command.push(i);
-                }
-            } else {
-                command.push(i);
-            }
-        }
-
-        Ok(command)
-    }
-}
-
-#[derive(Debug)]
-pub struct Hooks {
-    pub inner: BTreeMap<String, String>,
-}
-
-impl Hooks {
-    pub async fn get_commands(
-        request: &Request<'_>,
-        data: Data<'_>,
-    ) -> Result<Self, WebhookeyError> {
-        let mut buffer = Vec::new();
-        let size = data
-            .open(1_i32.megabytes())
-            .read_to_end(&mut buffer)
-            .map_err(WebhookeyError::Io)
-            .await?;
-        info!("Data of size {} received", size);
-
-        let config = request.guard::<&State<Config>>().await.unwrap(); // should never fail
-        let mut valid = false;
-        let mut result = BTreeMap::new();
-        let client_ip = &request
-            .client_ip()
-            .unwrap_or(IpAddr::V4(Ipv4Addr::UNSPECIFIED));
-
-        let hooks = config.hooks.iter().filter(|(name, hook)| {
-            if let Some(ip) = &hook.ip_filter {
-                accept_ip(name, client_ip, ip)
-            } else {
-                info!(
-                    "Allow hook `{}` from {}, no IP filter was configured",
-                    &name, &client_ip
-                );
-                true
-            }
-        });
-
-        for (hook_name, hook) in hooks {
-            let signature = request
-                .headers()
-                .get_one(&hook.signature)
-                .ok_or(WebhookeyError::InvalidSignature)?;
-
-            let secrets = hook
-                .secrets
-                .iter()
-                .map(|secret| validate_request(secret, signature, &buffer));
-
-            for secret in secrets {
-                match secret {
-                    Ok(()) => {
-                        trace!("Valid signature found for hook `{}`", hook_name);
-
-                        valid = true;
-
-                        let mut data: serde_json::Value =
-                            serde_json::from_slice(&buffer).map_err(WebhookeyError::Serde)?;
-
-                        match hook.filter.evaluate(request, &data) {
-                            Ok(true) => match hook.get_command(hook_name, request, &mut data) {
-                                Ok(command) => {
-                                    info!("Filter for `{}` matched", &hook_name);
-                                    result.insert(hook_name.to_string(), command);
-                                    break;
-                                }
-                                Err(e) => error!("{}", e),
-                            },
-                            Ok(false) => info!("Filter for `{}` did not match", &hook_name),
-                            Err(error) => {
-                                error!("Could not match filter for `{}`: {}", &hook_name, error)
-                            }
-                        }
-                    }
-                    Err(e) => trace!("Hook `{}` could not validate request: {}", &hook_name, e),
-                }
-            }
-        }
-
-        if !valid {
-            return Err(WebhookeyError::Unauthorized(*client_ip));
-        }
-
-        Ok(Hooks { inner: result })
-    }
-}
-
-#[rocket::async_trait]
-impl<'r> FromData<'r> for Hooks {
-    type Error = WebhookeyError;
-
-    async fn from_data(
-        request: &'r Request<'_>,
-        data: Data<'r>,
-    ) -> Outcome<Self, (Status, Self::Error), Data<'r>> {
-        {
-            request
-                .guard::<&State<Metrics>>()
-                .await
-                .unwrap() // TODO: Check if unwrap need to be fixed
-                .requests_received
-                .fetch_add(1, Ordering::Relaxed);
-        }
-
-        match Hooks::get_commands(request, data).await {
-            Ok(hooks) => {
-                if hooks.inner.is_empty() {
-                    let client_ip = &request
-                        .client_ip()
-                        .unwrap_or(IpAddr::V4(Ipv4Addr::UNSPECIFIED));
-
-                    request
-                        .guard::<&State<Metrics>>()
-                        .await
-                        .unwrap() // TODO: Check if unwrap need to be fixed
-                        .hooks_unmatched
-                        .fetch_add(1, Ordering::Relaxed);
-
-                    warn!("Unmatched hook from {}", &client_ip);
-                    return Failure((Status::NotFound, WebhookeyError::UnmatchedHook(*client_ip)));
-                }
-
-                Success(hooks)
-            }
-            Err(WebhookeyError::Unauthorized(e)) => {
-                error!("{}", WebhookeyError::Unauthorized(e));
-
-                request
-                    .guard::<&State<Metrics>>()
-                    .await
-                    .unwrap() // TODO: Check if unwrap need to be fixed
-                    .hooks_forbidden
-                    .fetch_add(1, Ordering::Relaxed);
-
-                Failure((Status::Unauthorized, WebhookeyError::Unauthorized(e)))
-            }
-            Err(e) => {
-                error!("{}", e);
-
-                request
-                    .guard::<&State<Metrics>>()
-                    .await
-                    .unwrap() // TODO: Check if unwrap need to be fixed
-                    .requests_invalid
-                    .fetch_add(1, Ordering::Relaxed);
-
-                Failure((Status::BadRequest, e))
-            }
-        }
-    }
-}
-
-#[post("/", format = "json", data = "<hooks>")]
-pub async fn receive_hook<'a>(
-    address: SocketAddr,
-    hooks: Hooks,
-    metrics: &State<Metrics>,
-) -> Status {
-    info!("Post request received from: {}", address);
-
-    hooks.inner.iter().for_each(|(name, command)| {
-        info!("Execute `{}` from hook `{}`", &command, &name);
-
-        match run_script::run(command, &vec![], &ScriptOptions::new()) {
-            Ok((status, stdout, stderr)) => {
-                info!("Command `{}` exited with return code: {}", &command, status);
-                trace!("Output of command `{}` on stdout: {:?}", &command, &stdout);
-                debug!("Output of command `{}` on stderr: {:?}", &command, &stderr);
-
-                metrics.commands_executed.fetch_add(1, Ordering::Relaxed);
-
-                let _ = match status {
-                    0 => metrics.commands_successful.fetch_add(1, Ordering::Relaxed),
-                    _ => metrics.commands_failed.fetch_add(1, Ordering::Relaxed),
-                };
-            }
-            Err(e) => {
-                error!("Execution of `{}` failed: {}", &command, e);
-
-                metrics
-                    .commands_execution_failed
-                    .fetch_add(1, Ordering::Relaxed);
-            }
-        }
-
-        metrics.hooks_successful.fetch_add(1, Ordering::Relaxed);
-    });
-
-    Status::Ok
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use crate::{
-        config::MetricsConfig,
-        filters::{AddrType, FilterType, HeaderFilter, JsonFilter},
-        hooks::Hook,
-        Metrics,
-    };
-    use regex::Regex;
-    use rocket::{
-        http::{ContentType, Header, Status},
-        local::asynchronous::Client,
-        routes,
-    };
-    use serde_json::json;
-    use std::collections::BTreeMap;
-
-    #[rocket::async_test]
-    async fn secret() {
-        let mut hooks = BTreeMap::new();
-
-        hooks.insert(
-            "test_hook".to_string(),
-            Hook {
-                command: "".to_string(),
-                signature: "X-Gitea-Signature".to_string(),
-                ip_filter: None,
-                secrets: vec!["valid".to_string()],
-                filter: FilterType::JsonFilter(JsonFilter {
-                    pointer: "*".to_string(),
-                    regex: Regex::new(".*").unwrap(),
-                }),
-            },
-        );
-
-        let config = Config {
-            metrics: None,
-            hooks: hooks,
-        };
-
-        let rocket = rocket::build()
-            .mount("/", routes![receive_hook])
-            .manage(config)
-            .manage(Metrics::default());
-
-        let client = Client::tracked(rocket).await.unwrap();
-        let response = client
-            .post("/")
-            .header(Header::new(
-                "X-Gitea-Signature",
-                "28175a0035f637f3cbb85afee9f9d319631580e7621cf790cd16ca063a2f820e",
-            ))
-            .header(ContentType::JSON)
-            .remote("127.0.0.1:8000".parse().unwrap())
-            .body(&serde_json::to_string(&json!({ "foo": "bar" })).unwrap())
-            .dispatch();
-
-        assert_eq!(response.await.status(), Status::NotFound);
-
-        let response = client
-            .post("/")
-            .header(Header::new("X-Gitea-Signature", "beef"))
-            .header(ContentType::JSON)
-            .remote("127.0.0.1:8000".parse().unwrap())
-            .body(&serde_json::to_string(&json!({ "foo": "bar" })).unwrap())
-            .dispatch();
-
-        assert_eq!(response.await.status(), Status::Unauthorized);
-
-        let response = client
-            .post("/")
-            .header(Header::new(
-                "X-Gitea-Signature",
-                "c5c315d76318362ec129ca629b50b626bba09ad3d7ba4cc0f4c0afe4a90537a0",
-            ))
-            .header(ContentType::JSON)
-            .remote("127.0.0.1:8000".parse().unwrap())
-            .body(r#"{ "not_secret": "invalid" "#)
-            .dispatch();
-
-        assert_eq!(response.await.status(), Status::BadRequest);
-
-        let response = client
-            .post("/")
-            .header(Header::new("X-Gitea-Signature", "foobar"))
-            .header(ContentType::JSON)
-            .remote("127.0.0.1:8000".parse().unwrap())
-            .dispatch();
-
-        assert_eq!(response.await.status(), Status::Unauthorized);
-    }
-
-    #[rocket::async_test]
-    async fn parse_command_request() {
-        let mut hooks = BTreeMap::new();
-
-        hooks.insert(
-            "test_hook0".to_string(),
-            Hook {
-                command:
-                    "/usr/bin/echo {{ /repository/full_name }} --foo {{ /pull_request/base/ref }}"
-                        .to_string(),
-                signature: "X-Gitea-Signature".to_string(),
-                ip_filter: None,
-                secrets: vec!["valid".to_string()],
-                filter: FilterType::JsonFilter(JsonFilter {
-                    pointer: "/foo".to_string(),
-                    regex: Regex::new("bar").unwrap(),
-                }),
-            },
-        );
-
-        hooks.insert(
-            "test_hook2".to_string(),
-            Hook {
-                command: "/usr/bin/echo {{ /repository/full_name }} {{ /pull_request/base/ref }}"
-                    .to_string(),
-                signature: "X-Gitea-Signature".to_string(),
-                ip_filter: None,
-                secrets: vec!["valid".to_string()],
-                filter: FilterType::JsonFilter(JsonFilter {
-                    pointer: "/foo".to_string(),
-                    regex: Regex::new("bar").unwrap(),
-                }),
-            },
-        );
-
-        hooks.insert(
-            "test_hook3".to_string(),
-            Hook {
-                command: "/usr/bin/echo {{ /repository/full_name }} {{ /pull_request/base/ref }}"
-                    .to_string(),
-                signature: "X-Gitea-Signature".to_string(),
-                ip_filter: None,
-                secrets: vec!["valid".to_string()],
-                filter: FilterType::Not(Box::new(FilterType::JsonFilter(JsonFilter {
-                    pointer: "/foobar".to_string(),
-                    regex: Regex::new("bar").unwrap(),
-                }))),
-            },
-        );
-
-        let config = Config {
-            metrics: None,
-            hooks: hooks,
-        };
-
-        let rocket = rocket::build()
-            .mount("/", routes![receive_hook])
-            .manage(config)
-            .manage(Metrics::default());
-
-        let client = Client::tracked(rocket).await.unwrap();
-
-        let response = client
-            .post("/")
-            .header(Header::new(
-                "X-Gitea-Signature",
-                "693b733871ecb684651a813c82936df683c9e4a816581f385353e06170545400",
-            ))
-            .header(ContentType::JSON)
-            .remote("127.0.0.1:8000".parse().unwrap())
-            .body(
-                &serde_json::to_string(&json!({
-                    "foo": "bar",
-                    "repository": {
-                        "full_name": "keith"
-                    },
-                    "pull_request": {
-                        "base": {
-                            "ref": "main"
-                        }
-                    }
-                }))
-                .unwrap(),
-            )
-            .dispatch();
-
-        assert_eq!(response.await.status(), Status::Ok);
-    }
-
-    #[rocket::async_test]
-    async fn parse_invalid_command_request() {
-        let mut hooks = BTreeMap::new();
-
-        hooks.insert(
-            "test_hook".to_string(),
-            Hook {
-                command: "/usr/bin/echo {{ /repository/full }} {{ /pull_request/base/ref }}"
-                    .to_string(),
-                signature: "X-Gitea-Signature".to_string(),
-                ip_filter: None,
-                secrets: vec!["valid".to_string()],
-                filter: FilterType::JsonFilter(JsonFilter {
-                    pointer: "/foo".to_string(),
-                    regex: Regex::new("bar").unwrap(),
-                }),
-            },
-        );
-
-        let config = Config {
-            metrics: None,
-            hooks: hooks,
-        };
-
-        let rocket = rocket::build()
-            .mount("/", routes![receive_hook])
-            .manage(config)
-            .manage(Metrics::default());
-
-        let client = Client::tracked(rocket).await.unwrap();
-
-        let response = client
-            .post("/")
-            .header(Header::new(
-                "X-Gitea-Signature",
-                "693b733871ecb684651a813c82936df683c9e4a816581f385353e06170545400",
-            ))
-            .header(ContentType::JSON)
-            .remote("127.0.0.1:8000".parse().unwrap())
-            .body(
-                &serde_json::to_string(&json!({
-                    "foo": "bar",
-                    "repository": {
-                        "full_name": "keith"
-                    },
-                    "pull_request": {
-                        "base": {
-                            "ref": "main"
-                        }
-                    }
-                }))
-                .unwrap(),
-            )
-            .dispatch();
-
-        assert_eq!(response.await.status(), Status::NotFound);
-    }
-
-    #[test]
-    fn parse_command() {
-        let mut headers = HeaderMap::new();
-        headers.add_raw("X-Gitea-Event", "something");
-
-        assert_eq!(
-            Hook::replace_parameters("command", &headers, &serde_json::Value::Null).unwrap(),
-            "command"
-        );
-
-        assert_eq!(
-            Hook::replace_parameters("    command", &headers, &serde_json::Value::Null).unwrap(),
-            "    command"
-        );
-
-        assert_eq!(
-            Hook::replace_parameters("command    ", &headers, &serde_json::Value::Null).unwrap(),
-            "command    "
-        );
-
-        assert_eq!(
-            Hook::replace_parameters("    command    ", &headers, &serde_json::Value::Null)
-                .unwrap(),
-            "    command    "
-        );
-
-        assert_eq!(
-            Hook::replace_parameters("command command    ", &headers, &serde_json::Value::Null)
-                .unwrap(),
-            "command command    "
-        );
-
-        assert_eq!(
-            Hook::replace_parameters("{{ /foo }}   command", &headers, &json!({ "foo": "bar" }))
-                .unwrap(),
-            "bar   command"
-        );
-
-        assert_eq!(
-            Hook::replace_parameters(
-                "   command  {{ /foo }}  ",
-                &headers,
-                &json!({ "foo": "bar" })
-            )
-            .unwrap(),
-            "   command  bar  "
-        );
-
-        assert_eq!(
-            Hook::replace_parameters(
-                "{{ /foo }}   command{{/field1/foo}}",
-                &headers,
-                &json!({ "foo": "bar", "field1": { "foo": "baz" } })
-            )
-            .unwrap(),
-            "bar   commandbaz"
-        );
-
-        assert_eq!(
-            Hook::replace_parameters(
-                "   command  {{ /foo }}  ",
-                &headers,
-                &json!({ "foo": "bar" })
-            )
-            .unwrap(),
-            "   command  bar  "
-        );
-
-        assert_eq!(
-            Hook::replace_parameters(
-                "   {{ /field1/foo }}   command",
-                &headers,
-                &json!({ "field1": { "foo": "bar" } })
-            )
-            .unwrap(),
-            "   bar   command"
-        );
-
-        assert_eq!(
-            Hook::replace_parameters(
-                "   {{ header X-Gitea-Event }}   command",
-                &headers,
-                &json!({ "field1": { "foo": "bar" } })
-            )
-            .unwrap(),
-            "   something   command"
-        );
-
-        assert_eq!(
-            Hook::replace_parameters(
-                "   {{ header X-Gitea-Event }} {{ /field1/foo }}  command",
-                &headers,
-                &json!({ "field1": { "foo": "bar" } })
-            )
-            .unwrap(),
-            "   something bar  command"
-        );
-
-        assert_eq!(
-            Hook::replace_parameters(
-                "   {{ header X-Gitea-Event }} {{ /field1/foo }} {{ /field1/bar }} {{ /field2/foo }} --command{{ /cmd }}",
-                &headers,
-                &json!({ "field1": { "foo": "bar", "bar": "baz" }, "field2": { "foo": "qux" }, "cmd": " else"})
-            )
-            .unwrap(),
-            "   something bar baz qux --command else"
-        );
-    }
-
-    #[test]
-    fn parse_config() {
-        let config: Config = serde_yaml::from_str(
-            r#"---
-hooks:
-  hook1:
-    command: /usr/bin/local/script_xy.sh {{ /field2/foo }} asdfasdf
-    signature: X-Gitea-Signature
-    ip_filter:
-      allow:
-        - 127.0.0.1/31
-    secrets:
-      - secret_key_01
-      - secret_key_02
-    filter:
-      json:
-        pointer: /ref
-        regex: refs/heads/master
-  hook2:
-    command: /usr/bin/local/script_xy.sh asdfasdf
-    signature: X-Gitea-Signature
-    secrets:
-      - secret_key_01
-      - secret_key_02
-    filter:
-      and:
-        - json:
-            pointer: /ref
-            regex: refs/heads/master
-        - header:
-            field: X-Gitea-Signature
-            regex: f6e5fe4fe37df76629112d55cc210718b6a55e7e"#,
-        )
-        .unwrap();
-
-        assert_eq!(
-            serde_yaml::to_string(&config).unwrap(),
-            serde_yaml::to_string(&Config {
-                metrics: None,
-                hooks: BTreeMap::from([
-                    (
-                        "hook1".to_string(),
-                        Hook {
-                            command: "/usr/bin/local/script_xy.sh {{ /field2/foo }} asdfasdf"
-                                .to_string(),
-                            signature: "X-Gitea-Signature".to_string(),
-                            ip_filter: Some(IpFilter::Allow(vec![AddrType::IpNet(
-                                "127.0.0.1/31".parse().unwrap()
-                            )])),
-                            secrets: vec!["secret_key_01".to_string(), "secret_key_02".to_string()],
-                            filter: FilterType::JsonFilter(JsonFilter {
-                                pointer: "/ref".to_string(),
-                                regex: Regex::new("refs/heads/master").unwrap(),
-                            }),
-                        }
-                    ),
-                    (
-                        "hook2".to_string(),
-                        Hook {
-                            command: "/usr/bin/local/script_xy.sh asdfasdf".to_string(),
-                            signature: "X-Gitea-Signature".to_string(),
-                            ip_filter: None,
-                            secrets: vec!["secret_key_01".to_string(), "secret_key_02".to_string()],
-                            filter: FilterType::And(vec![
-                                FilterType::JsonFilter(JsonFilter {
-                                    pointer: "/ref".to_string(),
-                                    regex: Regex::new("refs/heads/master").unwrap(),
-                                }),
-                                FilterType::HeaderFilter(HeaderFilter {
-                                    field: "X-Gitea-Signature".to_string(),
-                                    regex: Regex::new("f6e5fe4fe37df76629112d55cc210718b6a55e7e")
-                                        .unwrap(),
-                                }),
-                            ]),
-                        }
-                    )
-                ])
-            })
-            .unwrap()
-        );
-
-        let config: Config = serde_yaml::from_str(
-            r#"---
-metrics:
-  enabled: true
-hooks:
-  hook1:
-    command: /usr/bin/local/script_xy.sh {{ /field2/foo }} asdfasdf
-    signature: X-Gitea-Signature
-    ip_filter:
-      allow:
-        - 127.0.0.1/31
-    secrets:
-      - secret_key_01
-      - secret_key_02
-    filter:
-      json:
-        pointer: /ref
-        regex: refs/heads/master"#,
-        )
-        .unwrap();
-
-        assert_eq!(
-            serde_yaml::to_string(&config).unwrap(),
-            serde_yaml::to_string(&Config {
-                metrics: Some(MetricsConfig {
-                    enabled: true,
-                    ip_filter: None
-                }),
-                hooks: BTreeMap::from([(
-                    "hook1".to_string(),
-                    Hook {
-                        command: "/usr/bin/local/script_xy.sh {{ /field2/foo }} asdfasdf"
-                            .to_string(),
-                        signature: "X-Gitea-Signature".to_string(),
-                        ip_filter: Some(IpFilter::Allow(vec![AddrType::IpNet(
-                            "127.0.0.1/31".parse().unwrap()
-                        )])),
-                        secrets: vec!["secret_key_01".to_string(), "secret_key_02".to_string()],
-                        filter: FilterType::JsonFilter(JsonFilter {
-                            pointer: "/ref".to_string(),
-                            regex: Regex::new("refs/heads/master").unwrap(),
-                        }),
-                    }
-                ),])
-            })
-            .unwrap()
-        );
-    }
-}

src/main.rs

@@ -1,43 +1,454 @@
-mod cli;
+use anyhow::{anyhow, bail, Result};
-mod config;
-mod filters;
-mod hooks;
-mod metrics;
-
-use crate::{cli::Opts, config::Config, metrics::Metrics};
-use anyhow::Result;
 use clap::Parser;
-use log::{debug, error, trace};
+use hmac::{Hmac, Mac, NewMac};
-use rocket::routes;
+use log::{debug, error, info, trace, warn};
-use std::{fs::File, io::BufReader, net::IpAddr};
+use rocket::{
-use thiserror::Error;
+    data::{FromData, ToByteUnit},
+    futures::TryFutureExt,
+    get,
+    http::{HeaderMap, Status},
+    outcome::Outcome::{self, Failure, Success},
+    post, routes,
+    tokio::io::AsyncReadExt,
+    Data, Request, State,
+};
+use run_script::ScriptOptions;
+use serde::{Deserialize, Serialize};
+use sha2::Sha256;
 
-#[derive(Debug, Error)]
+use std::{
-pub enum WebhookeyError {
+    collections::BTreeMap,
-    #[error("Could not extract signature from header")]
+    fs::File,
-    InvalidSignature,
+    io::BufReader,
-    #[error("Unauthorized request from `{0}`")]
+    net::{IpAddr, Ipv4Addr, SocketAddr},
-    Unauthorized(IpAddr),
+    sync::atomic::{AtomicUsize, Ordering},
-    #[error("Unmatched hook from `{0}`")]
+};
-    UnmatchedHook(IpAddr),
+
-    #[error("Could not evaluate filter request")]
+mod cli;
-    InvalidFilter,
+mod webhooks;
-    #[error("IO Error")]
+
-    Io(#[from] std::io::Error),
+use crate::{
-    #[error("Serde Error")]
+    cli::Opts,
-    Serde(#[from] serde_json::Error),
+    webhooks::{FilterType, IpFilter, WebhookeyError},
+};
+
+#[derive(Debug, Default)]
+struct WebhookeyMetrics {
+    requests_received: AtomicUsize,
+    requests_invalid: AtomicUsize,
+    hooks_successful: AtomicUsize,
+    hooks_forbidden: AtomicUsize,
+    hooks_unmatched: AtomicUsize,
+    commands_executed: AtomicUsize,
+    commands_execution_failed: AtomicUsize,
+    commands_successful: AtomicUsize,
+    commands_failed: AtomicUsize,
 }
 
-pub fn get_string(data: &serde_json::Value) -> Result<String, WebhookeyError> {
+#[derive(Debug, Deserialize, Serialize)]
-    match &data {
+#[serde(deny_unknown_fields)]
-        serde_json::Value::Bool(bool) => Ok(bool.to_string()),
+struct MetricsConfig {
-        serde_json::Value::Number(number) => Ok(number.to_string()),
+    enabled: bool,
-        serde_json::Value::String(string) => Ok(string.as_str().to_string()),
+    ip_filter: Option<IpFilter>,
-        x => {
+}
-            error!("Could not get string from: {:?}", x);
+
-            unimplemented!()
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(deny_unknown_fields)]
+struct Config {
+    metrics: Option<MetricsConfig>,
+    hooks: BTreeMap<String, Hook>,
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(deny_unknown_fields)]
+struct Hook {
+    command: String,
+    signature: String,
+    ip_filter: Option<IpFilter>,
+    secrets: Vec<String>,
+    filter: FilterType,
+}
+
+impl Hook {
+    fn get_command(
+        &self,
+        hook_name: &str,
+        request: &Request,
+        data: &mut serde_json::Value,
+    ) -> Result<String> {
+        debug!("Replacing parameters for command of  hook `{}`", hook_name);
+
+        Hook::replace_parameters(&self.command, request.headers(), data)
+    }
+
+    fn replace_parameters(
+        input: &str,
+        headers: &HeaderMap,
+        data: &serde_json::Value,
+    ) -> Result<String> {
+        let mut command = String::new();
+        let command_template = &mut input.chars();
+
+        while let Some(i) = command_template.next() {
+            if i == '{' {
+                if let Some('{') = command_template.next() {
+                    let mut token = String::new();
+
+                    while let Some(i) = command_template.next() {
+                        if i == '}' {
+                            if let Some('}') = command_template.next() {
+                                let expr = token.trim().split(' ').collect::<Vec<&str>>();
+
+                                let replaced = match expr.get(0) {
+                                    Some(&"header") => get_header_field(
+                                        headers,
+                                        expr.get(1).ok_or_else(|| {
+                                            anyhow!("Missing parameter for `header` expression")
+                                        })?,
+                                    )?
+                                    .to_string(),
+                                    Some(pointer) => webhooks::get_string(
+                                        data.pointer(pointer).ok_or_else(|| {
+                                            anyhow!(
+                                                "Could not find field refered to in parameter `{}`",
+                                                pointer
+                                            )
+                                        })?,
+                                    )?,
+                                    None => bail!("Missing expression in variable `{}`", token),
+                                };
+
+                                command.push_str(&replaced);
+
+                                trace!("Replace `{}` with: {}", token, replaced);
+
+                                break;
+                            } else {
+                                command.push('}');
+                                command.push(i);
+                            }
+                        } else {
+                            token.push(i);
                         }
                     }
+                } else {
+                    command.push('{');
+                    command.push(i);
+                }
+            } else {
+                command.push(i);
+            }
+        }
+
+        Ok(command)
+    }
+}
+
+#[derive(Debug)]
+struct Hooks {
+    inner: BTreeMap<String, String>,
+}
+
+impl Hooks {
+    async fn get_commands(request: &Request<'_>, data: Data<'_>) -> Result<Self, WebhookeyError> {
+        let mut buffer = Vec::new();
+        let size = data
+            .open(256_i32.kilobytes())
+            .read_to_end(&mut buffer)
+            .map_err(WebhookeyError::Io)
+            .await?;
+        info!("Data of size {} received", size);
+
+        let config = request.guard::<&State<Config>>().await.unwrap(); // should never fail
+        let mut valid = false;
+        let mut result = BTreeMap::new();
+        let client_ip = &request
+            .client_ip()
+            .unwrap_or(IpAddr::V4(Ipv4Addr::UNSPECIFIED));
+
+        let hooks = config.hooks.iter().filter(|(name, hook)| {
+            if let Some(ip) = &hook.ip_filter {
+                accept_ip(name, client_ip, ip)
+            } else {
+                info!(
+                    "Allow hook `{}` from {}, no IP filter was configured",
+                    &name, &client_ip
+                );
+                true
+            }
+        });
+
+        for (hook_name, hook) in hooks {
+            let signature = request
+                .headers()
+                .get_one(&hook.signature)
+                .ok_or(WebhookeyError::InvalidSignature)?;
+
+            let secrets = hook
+                .secrets
+                .iter()
+                .map(|secret| validate_request(secret, signature, &buffer));
+
+            for secret in secrets {
+                match secret {
+                    Ok(()) => {
+                        trace!("Valid signature found for hook `{}`", hook_name);
+
+                        valid = true;
+
+                        let mut data: serde_json::Value =
+                            serde_json::from_slice(&buffer).map_err(WebhookeyError::Serde)?;
+
+                        match hook.filter.evaluate(&data) {
+                            Ok(true) => match hook.get_command(hook_name, request, &mut data) {
+                                Ok(command) => {
+                                    info!("Filter for `{}` matched", &hook_name);
+                                    result.insert(hook_name.to_string(), command);
+                                    break;
+                                }
+                                Err(e) => error!("{}", e),
+                            },
+                            Ok(false) => info!("Filter for `{}` did not match", &hook_name),
+                            Err(error) => {
+                                error!("Could not match filter for `{}`: {}", &hook_name, error)
+                            }
+                        }
+                    }
+                    Err(e) => trace!("Hook `{}` could not validate request: {}", &hook_name, e),
+                }
+            }
+        }
+
+        if !valid {
+            return Err(WebhookeyError::Unauthorized(*client_ip));
+        }
+
+        Ok(Hooks { inner: result })
+    }
+}
+
+fn accept_ip(hook_name: &str, client_ip: &IpAddr, ip: &IpFilter) -> bool {
+    if ip.validate(client_ip) {
+        info!("Allow hook `{}` from {}", &hook_name, &client_ip);
+        return true;
+    }
+
+    warn!("Deny hook `{}` from {}", &hook_name, &client_ip);
+    false
+}
+
+fn validate_request(secret: &str, signature: &str, data: &[u8]) -> Result<()> {
+    let mut mac = Hmac::<Sha256>::new_from_slice(secret.as_bytes())
+        .map_err(|e| anyhow!("Could not create hasher with secret: {}", e))?;
+    mac.update(data);
+    let raw_signature = hex::decode(signature.as_bytes())?;
+    mac.verify(&raw_signature).map_err(|e| anyhow!("{}", e))
+}
+
+fn get_header_field<'a>(headers: &'a HeaderMap, param: &str) -> Result<&'a str> {
+    headers
+        .get_one(param)
+        .ok_or_else(|| anyhow!("Could not extract event parameter from header"))
+}
+
+fn get_config() -> Result<File> {
+    // Look for config in CWD..
+    if let Ok(config) = File::open("config.yml") {
+        info!("Loading configuration from `./config.yml`");
+
+        return Ok(config);
+    }
+
+    // ..look for user path config..
+    if let Some(mut path) = dirs::config_dir() {
+        path.push("webhookey/config.yml");
+
+        if let Ok(config) = File::open(&path) {
+            info!(
+                "Loading configuration from `{}`",
+                path.to_str().unwrap_or("<path unprintable>"),
+            );
+
+            return Ok(config);
+        }
+    }
+
+    // ..look for systemwide config..
+    if let Ok(config) = File::open("/etc/webhookey/config.yml") {
+        info!("Loading configuration from `/etc/webhookey/config.yml`");
+
+        return Ok(config);
+    }
+
+    // ..you had your chance.
+    bail!("No configuration file found.");
+}
+
+fn get_metrics(metrics: &WebhookeyMetrics) -> String {
+    format!(
+        r"# HELP webhookey_requests_received Number of requests received
+# TYPE webhookey_requests_received gauge
+webhookey_requests_received {}
+# HELP webhookey_requests_invalid Number of invalid requests received
+# TYPE webhookey_requests_invalid gauge
+webhookey_requests_invalid {}
+# HELP webhookey_hooks_successful Number of successfully executed hooks
+# TYPE webhookey_hooks_successful gauge
+webhookey_hooks_sucessful {}
+# HELP webhookey_hooks_forbidden Number of forbidden requests
+# TYPE webhookey_hooks_forbidden gauge
+webhookey_hooks_forbidden {}
+# HELP webhookey_hooks_unmatched Number of unmatched requests
+# TYPE webhookey_hooks_unmatched gauge
+webhookey_hooks_unmatched {}
+# HELP webhookey_commands_executed Number of commands executed
+# TYPE webhookey_commands_executed gauge
+webhookey_commands_executed {}
+# HELP webhookey_commands_execution_failed Number of commands failed to execute
+# TYPE webhookey_commands_execution_failed gauge
+webhookey_commands_execution_failed {}
+# HELP webhookey_commands_successful Number of executed commands returning return code 0
+# TYPE webhookey_commands_successful gauge
+webhookey_commands_successful {}
+# HELP webhookey_commands_failed Number of executed commands returning different return code than 0
+# TYPE webhookey_commands_failed gauge
+webhookey_commands_failed {}
+",
+        metrics.requests_received.load(Ordering::Relaxed),
+        metrics.requests_invalid.load(Ordering::Relaxed),
+        metrics.hooks_successful.load(Ordering::Relaxed),
+        metrics.hooks_forbidden.load(Ordering::Relaxed),
+        metrics.hooks_unmatched.load(Ordering::Relaxed),
+        metrics.commands_executed.load(Ordering::Relaxed),
+        metrics.commands_execution_failed.load(Ordering::Relaxed),
+        metrics.commands_successful.load(Ordering::Relaxed),
+        metrics.commands_failed.load(Ordering::Relaxed),
+    )
+}
+
+#[rocket::async_trait]
+impl<'r> FromData<'r> for Hooks {
+    type Error = WebhookeyError;
+
+    async fn from_data(
+        request: &'r Request<'_>,
+        data: Data<'r>,
+    ) -> Outcome<Self, (Status, Self::Error), Data<'r>> {
+        {
+            request
+                .guard::<&State<WebhookeyMetrics>>()
+                .await
+                .unwrap() // TODO: Check if unwrap need to be fixed
+                .requests_received
+                .fetch_add(1, Ordering::Relaxed);
+        }
+
+        match Hooks::get_commands(request, data).await {
+            Ok(hooks) => {
+                if hooks.inner.is_empty() {
+                    let client_ip = &request
+                        .client_ip()
+                        .unwrap_or(IpAddr::V4(Ipv4Addr::UNSPECIFIED));
+
+                    request
+                        .guard::<&State<WebhookeyMetrics>>()
+                        .await
+                        .unwrap() // TODO: Check if unwrap need to be fixed
+                        .hooks_unmatched
+                        .fetch_add(1, Ordering::Relaxed);
+
+                    warn!("Unmatched hook from {}", &client_ip);
+                    return Failure((Status::NotFound, WebhookeyError::UnmatchedHook(*client_ip)));
+                }
+
+                Success(hooks)
+            }
+            Err(WebhookeyError::Unauthorized(e)) => {
+                error!("{}", WebhookeyError::Unauthorized(e));
+
+                request
+                    .guard::<&State<WebhookeyMetrics>>()
+                    .await
+                    .unwrap() // TODO: Check if unwrap need to be fixed
+                    .hooks_forbidden
+                    .fetch_add(1, Ordering::Relaxed);
+
+                Failure((Status::Unauthorized, WebhookeyError::Unauthorized(e)))
+            }
+            Err(e) => {
+                error!("{}", e);
+
+                request
+                    .guard::<&State<WebhookeyMetrics>>()
+                    .await
+                    .unwrap() // TODO: Check if unwrap need to be fixed
+                    .requests_invalid
+                    .fetch_add(1, Ordering::Relaxed);
+
+                Failure((Status::BadRequest, e))
+            }
+        }
+    }
+}
+
+#[post("/", format = "json", data = "<hooks>")]
+async fn receive_hook<'a>(
+    address: SocketAddr,
+    hooks: Hooks,
+    metrics: &State<WebhookeyMetrics>,
+) -> Status {
+    info!("Post request received from: {}", address);
+
+    hooks.inner.iter().for_each(|(name, command)| {
+        info!("Execute `{}` from hook `{}`", &command, &name);
+
+        match run_script::run(command, &vec![], &ScriptOptions::new()) {
+            Ok((status, stdout, stderr)) => {
+                info!("Command `{}` exited with return code: {}", &command, status);
+                trace!("Output of command `{}` on stdout: {:?}", &command, &stdout);
+                debug!("Output of command `{}` on stderr: {:?}", &command, &stderr);
+
+                metrics.commands_executed.fetch_add(1, Ordering::Relaxed);
+
+                let _ = match status {
+                    0 => metrics.commands_successful.fetch_add(1, Ordering::Relaxed),
+                    _ => metrics.commands_failed.fetch_add(1, Ordering::Relaxed),
+                };
+            }
+            Err(e) => {
+                error!("Execution of `{}` failed: {}", &command, e);
+
+                metrics
+                    .commands_execution_failed
+                    .fetch_add(1, Ordering::Relaxed);
+            }
+        }
+    });
+
+    Status::Ok
+}
+
+#[get("/metrics")]
+async fn metrics(
+    address: SocketAddr,
+    metrics: &State<WebhookeyMetrics>,
+    config: &State<Config>,
+) -> Option<String> {
+    if let Some(metrics_config) = &config.metrics {
+        if metrics_config.enabled {
+            if let Some(filter) = &metrics_config.ip_filter {
+                if filter.validate(&address.ip()) {
+                    return Some(get_metrics(metrics));
+                }
+            } else {
+                return Some(get_metrics(metrics));
+            }
+        }
+    }
+
+    warn!("Forbidden request for metrics: {:?}", address);
+
+    None
 }
 
 #[rocket::main]
@@ -48,7 +459,7 @@ async fn main() -> Result<()> {
 
     let config: Config = match cli.config {
         Some(config) => serde_yaml::from_reader(BufReader::new(File::open(config)?))?,
-        _ => serde_yaml::from_reader(BufReader::new(config::get_config()?))?,
+        _ => serde_yaml::from_reader(BufReader::new(get_config()?))?,
     };
 
     trace!("Parsed configuration:\n{}", serde_yaml::to_string(&config)?);
@@ -60,11 +471,467 @@ async fn main() -> Result<()> {
     }
 
     rocket::build()
-        .mount("/", routes![hooks::receive_hook, metrics::metrics])
+        .mount("/", routes![receive_hook, metrics])
         .manage(config)
-        .manage(Metrics::default())
+        .manage(WebhookeyMetrics::default())
         .launch()
         .await?;
 
     Ok(())
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::webhooks::{AddrType, JsonFilter};
+    use rocket::{
+        http::{ContentType, Header},
+        local::asynchronous::Client,
+    };
+    use serde_json::json;
+
+    #[rocket::async_test]
+    async fn secret() {
+        let mut hooks = BTreeMap::new();
+
+        hooks.insert(
+            "test_hook".to_string(),
+            Hook {
+                command: "".to_string(),
+                signature: "X-Gitea-Signature".to_string(),
+                ip_filter: None,
+                secrets: vec!["valid".to_string()],
+                filter: FilterType::JsonFilter(JsonFilter {
+                    pointer: "*".to_string(),
+                    regex: "*".to_string(),
+                }),
+            },
+        );
+
+        let config = Config {
+            metrics: None,
+            hooks: hooks,
+        };
+
+        let rocket = rocket::build()
+            .mount("/", routes![receive_hook])
+            .manage(config)
+            .manage(WebhookeyMetrics::default());
+
+        let client = Client::tracked(rocket).await.unwrap();
+        let response = client
+            .post("/")
+            .header(Header::new(
+                "X-Gitea-Signature",
+                "28175a0035f637f3cbb85afee9f9d319631580e7621cf790cd16ca063a2f820e",
+            ))
+            .header(ContentType::JSON)
+            .remote("127.0.0.1:8000".parse().unwrap())
+            .body(&serde_json::to_string(&json!({ "foo": "bar" })).unwrap())
+            .dispatch();
+
+        assert_eq!(response.await.status(), Status::NotFound);
+
+        let response = client
+            .post("/")
+            .header(Header::new("X-Gitea-Signature", "beef"))
+            .header(ContentType::JSON)
+            .remote("127.0.0.1:8000".parse().unwrap())
+            .body(&serde_json::to_string(&json!({ "foo": "bar" })).unwrap())
+            .dispatch();
+
+        assert_eq!(response.await.status(), Status::Unauthorized);
+
+        let response = client
+            .post("/")
+            .header(Header::new(
+                "X-Gitea-Signature",
+                "c5c315d76318362ec129ca629b50b626bba09ad3d7ba4cc0f4c0afe4a90537a0",
+            ))
+            .header(ContentType::JSON)
+            .remote("127.0.0.1:8000".parse().unwrap())
+            .body(r#"{ "not_secret": "invalid" "#)
+            .dispatch();
+
+        assert_eq!(response.await.status(), Status::BadRequest);
+
+        let response = client
+            .post("/")
+            .header(Header::new("X-Gitea-Signature", "foobar"))
+            .header(ContentType::JSON)
+            .remote("127.0.0.1:8000".parse().unwrap())
+            .dispatch();
+
+        assert_eq!(response.await.status(), Status::Unauthorized);
+    }
+
+    #[test]
+    fn parse_command() {
+        let mut headers = HeaderMap::new();
+        headers.add_raw("X-Gitea-Event", "something");
+
+        assert_eq!(
+            Hook::replace_parameters("command", &headers, &serde_json::Value::Null).unwrap(),
+            "command"
+        );
+
+        assert_eq!(
+            Hook::replace_parameters("    command", &headers, &serde_json::Value::Null).unwrap(),
+            "    command"
+        );
+
+        assert_eq!(
+            Hook::replace_parameters("command    ", &headers, &serde_json::Value::Null).unwrap(),
+            "command    "
+        );
+
+        assert_eq!(
+            Hook::replace_parameters("    command    ", &headers, &serde_json::Value::Null)
+                .unwrap(),
+            "    command    "
+        );
+
+        assert_eq!(
+            Hook::replace_parameters("command command    ", &headers, &serde_json::Value::Null)
+                .unwrap(),
+            "command command    "
+        );
+
+        assert_eq!(
+            Hook::replace_parameters("{{ /foo }}   command", &headers, &json!({ "foo": "bar" }))
+                .unwrap(),
+            "bar   command"
+        );
+
+        assert_eq!(
+            Hook::replace_parameters(
+                "   command  {{ /foo }}  ",
+                &headers,
+                &json!({ "foo": "bar" })
+            )
+            .unwrap(),
+            "   command  bar  "
+        );
+
+        assert_eq!(
+            Hook::replace_parameters(
+                "{{ /foo }}   command{{/field1/foo}}",
+                &headers,
+                &json!({ "foo": "bar", "field1": { "foo": "baz" } })
+            )
+            .unwrap(),
+            "bar   commandbaz"
+        );
+
+        assert_eq!(
+            Hook::replace_parameters(
+                "   command  {{ /foo }}  ",
+                &headers,
+                &json!({ "foo": "bar" })
+            )
+            .unwrap(),
+            "   command  bar  "
+        );
+
+        assert_eq!(
+            Hook::replace_parameters(
+                "   {{ /field1/foo }}   command",
+                &headers,
+                &json!({ "field1": { "foo": "bar" } })
+            )
+            .unwrap(),
+            "   bar   command"
+        );
+
+        assert_eq!(
+            Hook::replace_parameters(
+                "   {{ header X-Gitea-Event }}   command",
+                &headers,
+                &json!({ "field1": { "foo": "bar" } })
+            )
+            .unwrap(),
+            "   something   command"
+        );
+
+        assert_eq!(
+            Hook::replace_parameters(
+                "   {{ header X-Gitea-Event }} {{ /field1/foo }}  command",
+                &headers,
+                &json!({ "field1": { "foo": "bar" } })
+            )
+            .unwrap(),
+            "   something bar  command"
+        );
+
+        assert_eq!(
+            Hook::replace_parameters(
+                "   {{ header X-Gitea-Event }} {{ /field1/foo }} {{ /field1/bar }} {{ /field2/foo }} --command{{ /cmd }}",
+                &headers,
+                &json!({ "field1": { "foo": "bar", "bar": "baz" }, "field2": { "foo": "qux" }, "cmd": " else"})
+            )
+            .unwrap(),
+            "   something bar baz qux --command else"
+        );
+    }
+
+    #[rocket::async_test]
+    async fn parse_command_request() {
+        let mut hooks = BTreeMap::new();
+
+        hooks.insert(
+            "test_hook".to_string(),
+            Hook {
+                command:
+                    "/usr/bin/echo {{ /repository/full_name }} --foo {{ /pull_request/base/ref }}"
+                        .to_string(),
+                signature: "X-Gitea-Signature".to_string(),
+                ip_filter: None,
+                secrets: vec!["valid".to_string()],
+                filter: FilterType::JsonFilter(JsonFilter {
+                    pointer: "/foo".to_string(),
+                    regex: "bar".to_string(),
+                }),
+            },
+        );
+
+        hooks.insert(
+            "test_hook".to_string(),
+            Hook {
+                command: "/usr/bin/echo {{ /repository/full_name }} {{ /pull_request/base/ref }}"
+                    .to_string(),
+                signature: "X-Gitea-Signature".to_string(),
+                ip_filter: None,
+                secrets: vec!["valid".to_string()],
+                filter: FilterType::JsonFilter(JsonFilter {
+                    pointer: "/foo".to_string(),
+                    regex: "bar".to_string(),
+                }),
+            },
+        );
+
+        let config = Config {
+            metrics: None,
+            hooks: hooks,
+        };
+
+        let rocket = rocket::build()
+            .mount("/", routes![receive_hook])
+            .manage(config)
+            .manage(WebhookeyMetrics::default());
+
+        let client = Client::tracked(rocket).await.unwrap();
+
+        let response = client
+            .post("/")
+            .header(Header::new(
+                "X-Gitea-Signature",
+                "693b733871ecb684651a813c82936df683c9e4a816581f385353e06170545400",
+            ))
+            .header(ContentType::JSON)
+            .remote("127.0.0.1:8000".parse().unwrap())
+            .body(
+                &serde_json::to_string(&json!({
+                    "foo": "bar",
+                    "repository": {
+                        "full_name": "keith"
+                    },
+                    "pull_request": {
+                        "base": {
+                            "ref": "main"
+                        }
+                    }
+                }))
+                .unwrap(),
+            )
+            .dispatch();
+
+        assert_eq!(response.await.status(), Status::Ok);
+    }
+
+    #[rocket::async_test]
+    async fn parse_invalid_command_request() {
+        let mut hooks = BTreeMap::new();
+
+        hooks.insert(
+            "test_hook".to_string(),
+            Hook {
+                command: "/usr/bin/echo {{ /repository/full }} {{ /pull_request/base/ref }}"
+                    .to_string(),
+                signature: "X-Gitea-Signature".to_string(),
+                ip_filter: None,
+                secrets: vec!["valid".to_string()],
+                filter: FilterType::JsonFilter(JsonFilter {
+                    pointer: "/foo".to_string(),
+                    regex: "bar".to_string(),
+                }),
+            },
+        );
+
+        let config = Config {
+            metrics: None,
+            hooks: hooks,
+        };
+
+        let rocket = rocket::build()
+            .mount("/", routes![receive_hook])
+            .manage(config)
+            .manage(WebhookeyMetrics::default());
+
+        let client = Client::tracked(rocket).await.unwrap();
+
+        let response = client
+            .post("/")
+            .header(Header::new(
+                "X-Gitea-Signature",
+                "693b733871ecb684651a813c82936df683c9e4a816581f385353e06170545400",
+            ))
+            .header(ContentType::JSON)
+            .remote("127.0.0.1:8000".parse().unwrap())
+            .body(
+                &serde_json::to_string(&json!({
+                    "foo": "bar",
+                    "repository": {
+                        "full_name": "keith"
+                    },
+                    "pull_request": {
+                        "base": {
+                            "ref": "main"
+                        }
+                    }
+                }))
+                .unwrap(),
+            )
+            .dispatch();
+
+        assert_eq!(response.await.status(), Status::NotFound);
+    }
+
+    #[test]
+    fn parse_config() {
+        let config: Config = serde_yaml::from_str(
+            r#"---
+hooks:
+  hook1:
+    command: /usr/bin/local/script_xy.sh {{ /field2/foo }} asdfasdf
+    signature: X-Gitea-Signature
+    ip_filter:
+      allow:
+        - 127.0.0.1/31
+    secrets:
+      - secret_key_01
+      - secret_key_02
+    filter:
+      json:
+        pointer: /ref
+        regex: refs/heads/master
+  hook2:
+    command: /usr/bin/local/script_xy.sh asdfasdf
+    signature: X-Gitea-Signature
+    secrets:
+      - secret_key_01
+      - secret_key_02
+    filter:
+      and:
+        - json:
+            pointer: /ref
+            regex: refs/heads/master
+        - json:
+            pointer: /after
+            regex: f6e5fe4fe37df76629112d55cc210718b6a55e7e"#,
+        )
+        .unwrap();
+
+        assert_eq!(
+            serde_yaml::to_string(&config).unwrap(),
+            serde_yaml::to_string(&Config {
+                metrics: None,
+                hooks: BTreeMap::from([
+                    (
+                        "hook1".to_string(),
+                        Hook {
+                            command: "/usr/bin/local/script_xy.sh {{ /field2/foo }} asdfasdf"
+                                .to_string(),
+                            signature: "X-Gitea-Signature".to_string(),
+                            ip_filter: Some(IpFilter::Allow(vec![AddrType::IpNet(
+                                "127.0.0.1/31".parse().unwrap()
+                            )])),
+                            secrets: vec!["secret_key_01".to_string(), "secret_key_02".to_string()],
+                            filter: FilterType::JsonFilter(JsonFilter {
+                                pointer: "/ref".to_string(),
+                                regex: "refs/heads/master".to_string(),
+                            }),
+                        }
+                    ),
+                    (
+                        "hook2".to_string(),
+                        Hook {
+                            command: "/usr/bin/local/script_xy.sh asdfasdf".to_string(),
+                            signature: "X-Gitea-Signature".to_string(),
+                            ip_filter: None,
+                            secrets: vec!["secret_key_01".to_string(), "secret_key_02".to_string()],
+                            filter: FilterType::And(vec![
+                                FilterType::JsonFilter(JsonFilter {
+                                    pointer: "/ref".to_string(),
+                                    regex: "refs/heads/master".to_string(),
+                                }),
+                                FilterType::JsonFilter(JsonFilter {
+                                    pointer: "/after".to_string(),
+                                    regex: "f6e5fe4fe37df76629112d55cc210718b6a55e7e".to_string(),
+                                }),
+                            ]),
+                        }
+                    )
+                ])
+            })
+            .unwrap()
+        );
+
+        let config: Config = serde_yaml::from_str(
+            r#"---
+metrics:
+  enabled: true
+hooks:
+  hook1:
+    command: /usr/bin/local/script_xy.sh {{ /field2/foo }} asdfasdf
+    signature: X-Gitea-Signature
+    ip_filter:
+      allow:
+        - 127.0.0.1/31
+    secrets:
+      - secret_key_01
+      - secret_key_02
+    filter:
+      json:
+        pointer: /ref
+        regex: refs/heads/master"#,
+        )
+        .unwrap();
+
+        assert_eq!(
+            serde_yaml::to_string(&config).unwrap(),
+            serde_yaml::to_string(&Config {
+                metrics: Some(MetricsConfig {
+                    enabled: true,
+                    ip_filter: None
+                }),
+                hooks: BTreeMap::from([(
+                    "hook1".to_string(),
+                    Hook {
+                        command: "/usr/bin/local/script_xy.sh {{ /field2/foo }} asdfasdf"
+                            .to_string(),
+                        signature: "X-Gitea-Signature".to_string(),
+                        ip_filter: Some(IpFilter::Allow(vec![AddrType::IpNet(
+                            "127.0.0.1/31".parse().unwrap()
+                        )])),
+                        secrets: vec!["secret_key_01".to_string(), "secret_key_02".to_string()],
+                        filter: FilterType::JsonFilter(JsonFilter {
+                            pointer: "/ref".to_string(),
+                            regex: "refs/heads/master".to_string(),
+                        }),
+                    }
+                ),])
+            })
+            .unwrap()
+        );
+    }
+}

src/metrics.rs

@@ -1,91 +0,0 @@
-use crate::Config;
-use log::warn;
-use rocket::{get, State};
-use std::{
-    net::SocketAddr,
-    sync::atomic::{AtomicUsize, Ordering},
-};
-
-#[derive(Debug, Default)]
-pub struct Metrics {
-    pub requests_received: AtomicUsize,
-    pub requests_invalid: AtomicUsize,
-    pub hooks_successful: AtomicUsize,
-    pub hooks_forbidden: AtomicUsize,
-    pub hooks_unmatched: AtomicUsize,
-    pub commands_executed: AtomicUsize,
-    pub commands_execution_failed: AtomicUsize,
-    pub commands_successful: AtomicUsize,
-    pub commands_failed: AtomicUsize,
-}
-
-#[get("/metrics")]
-pub async fn metrics(
-    address: SocketAddr,
-    metrics: &State<Metrics>,
-    config: &State<Config>,
-) -> Option<String> {
-    // Are metrics configured?
-    if let Some(metrics_config) = &config.metrics {
-        // Are metrics enabled?
-        if metrics_config.enabled {
-            // Is a filter configured?
-            if let Some(filter) = &metrics_config.ip_filter {
-                // Does the request match the filter?
-                if filter.validate(&address.ip()) {
-                    return Some(metrics.get_metrics());
-                }
-            } else {
-                return Some(metrics.get_metrics());
-            }
-        }
-    }
-
-    warn!("Forbidden request for metrics: {:?}", address);
-
-    None
-}
-
-impl Metrics {
-    fn get_metrics(&self) -> String {
-        format!(
-            r"# HELP webhookey_requests_received Number of requests received
-# TYPE webhookey_requests_received gauge
-webhookey_requests_received {}
-# HELP webhookey_requests_invalid Number of invalid requests received
-# TYPE webhookey_requests_invalid gauge
-webhookey_requests_invalid {}
-# HELP webhookey_hooks_successful Number of successfully executed hooks
-# TYPE webhookey_hooks_successful gauge
-webhookey_hooks_sucessful {}
-# HELP webhookey_hooks_forbidden Number of forbidden requests
-# TYPE webhookey_hooks_forbidden gauge
-webhookey_hooks_forbidden {}
-# HELP webhookey_hooks_unmatched Number of unmatched requests
-# TYPE webhookey_hooks_unmatched gauge
-webhookey_hooks_unmatched {}
-# HELP webhookey_commands_executed Number of commands executed
-# TYPE webhookey_commands_executed gauge
-webhookey_commands_executed {}
-# HELP webhookey_commands_execution_failed Number of commands failed to execute
-# TYPE webhookey_commands_execution_failed gauge
-webhookey_commands_execution_failed {}
-# HELP webhookey_commands_successful Number of executed commands returning return code 0
-# TYPE webhookey_commands_successful gauge
-webhookey_commands_successful {}
-# HELP webhookey_commands_failed Number of executed commands returning different return code than 0
-# TYPE webhookey_commands_failed gauge
-webhookey_commands_failed {}
-",
-            self.requests_received.load(Ordering::Relaxed),
-            self.requests_invalid.load(Ordering::Relaxed),
-            self.hooks_successful.load(Ordering::Relaxed),
-            self.hooks_forbidden.load(Ordering::Relaxed),
-            self.hooks_unmatched.load(Ordering::Relaxed),
-            self.commands_executed.load(Ordering::Relaxed),
-            self.commands_execution_failed.load(Ordering::Relaxed),
-            self.commands_successful.load(Ordering::Relaxed),
-            self.commands_failed.load(Ordering::Relaxed),
-        )
-    }
-}

src/webhooks.rs

@@ -0,0 +1,163 @@
+use anyhow::Result;
+use ipnet::IpNet;
+use log::{debug, error, trace};
+use regex::Regex;
+use serde::{Deserialize, Serialize};
+use std::net::IpAddr;
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum WebhookeyError {
+    #[error("Could not extract signature from header")]
+    InvalidSignature,
+    #[error("Unauthorized request from `{0}`")]
+    Unauthorized(IpAddr),
+    #[error("Unmatched hook from `{0}`")]
+    UnmatchedHook(IpAddr),
+    #[error("Could not evaluate filter request")]
+    InvalidFilter,
+    #[error("IO Error")]
+    Io(std::io::Error),
+    #[error("Serde Error")]
+    Serde(serde_json::Error),
+    #[error("Regex Error")]
+    Regex(regex::Error),
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(deny_unknown_fields, untagged)]
+pub enum AddrType {
+    IpAddr(IpAddr),
+    IpNet(IpNet),
+}
+
+impl AddrType {
+    pub fn matches(&self, client_ip: &IpAddr) -> bool {
+        match self {
+            AddrType::IpAddr(addr) => addr == client_ip,
+            AddrType::IpNet(net) => net.contains(client_ip),
+        }
+    }
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(deny_unknown_fields, rename_all = "lowercase")]
+pub enum IpFilter {
+    Allow(Vec<AddrType>),
+    Deny(Vec<AddrType>),
+}
+
+impl IpFilter {
+    pub fn validate(&self, client_ip: &IpAddr) -> bool {
+        match self {
+            IpFilter::Allow(list) => list.iter().any(|i| i.matches(client_ip)),
+            IpFilter::Deny(list) => !list.iter().any(|i| i.matches(client_ip)),
+        }
+    }
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(deny_unknown_fields)]
+pub struct JsonFilter {
+    pub pointer: String,
+    pub regex: String,
+}
+
+impl JsonFilter {
+    pub fn evaluate(&self, data: &serde_json::Value) -> Result<bool, WebhookeyError> {
+        trace!(
+            "Matching `{}` on `{}` from received json",
+            &self.regex,
+            &self.pointer,
+        );
+
+        let regex = Regex::new(&self.regex).map_err(WebhookeyError::Regex)?;
+
+        if let Some(value) = data.pointer(&self.pointer) {
+            if regex.is_match(&get_string(value)?) {
+                debug!("Regex `{}` for `{}` matches", &self.regex, &self.pointer);
+
+                return Ok(true);
+            }
+        }
+
+        debug!(
+            "Regex `{}` for `{}` does not match",
+            &self.regex, &self.pointer
+        );
+
+        Ok(false)
+    }
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+#[serde(deny_unknown_fields, rename_all = "lowercase")]
+pub enum FilterType {
+    And(Vec<FilterType>),
+    Or(Vec<FilterType>),
+    #[serde(rename = "json")]
+    JsonFilter(JsonFilter),
+}
+
+impl FilterType {
+    pub fn evaluate(&self, data: &serde_json::Value) -> Result<bool, WebhookeyError> {
+        match self {
+            FilterType::And(filters) => {
+                let (mut results, mut errors) = (Vec::new(), Vec::new());
+
+                filters
+                    .iter()
+                    .map(|filter| filter.evaluate(data))
+                    .for_each(|item| match item {
+                        Ok(o) => results.push(o),
+                        Err(e) => errors.push(e),
+                    });
+
+                if errors.is_empty() {
+                    Ok(results.iter().all(|r| *r))
+                } else {
+                    errors
+                        .iter()
+                        .for_each(|e| error!("Could not evaluate Filter: {}", e));
+
+                    Err(WebhookeyError::InvalidFilter)
+                }
+            }
+            FilterType::Or(filters) => {
+                let (mut results, mut errors) = (Vec::new(), Vec::new());
+
+                filters
+                    .iter()
+                    .map(|filter| filter.evaluate(data))
+                    .for_each(|item| match item {
+                        Ok(o) => results.push(o),
+                        Err(e) => errors.push(e),
+                    });
+
+                if errors.is_empty() {
+                    Ok(results.iter().any(|r| *r))
+                } else {
+                    errors
+                        .iter()
+                        .for_each(|e| error!("Could not evaluate Filter: {}", e));
+
+                    Err(WebhookeyError::InvalidFilter)
+                }
+            }
+            // FilterType::HeaderFilter(filter) => todo!(),
+            FilterType::JsonFilter(filter) => filter.evaluate(data),
+        }
+    }
+}
+
+pub fn get_string(data: &serde_json::Value) -> Result<String, WebhookeyError> {
+    match &data {
+        serde_json::Value::Bool(bool) => Ok(bool.to_string()),
+        serde_json::Value::Number(number) => Ok(number.to_string()),
+        serde_json::Value::String(string) => Ok(string.as_str().to_string()),
+        x => {
+            error!("Could not get string from: {:?}", x);
+            unimplemented!()
+        }
+    }
+}

webhookey.1

@@ -1,57 +0,0 @@
-.TH WEBHOOKEY 1 "26 Nov 2021" "webhookey" "Linux"
-.SH NAME
-webhookey \- Receive webhooks and act upon them
-.SH SYNOPSIS
-.B webhookey [OPTIONS] [SUBCOMMAND]
-.SH DESCRIPTION
-\fBwebhookey\fR receives http(s) requests in form of webhooks. Those
-webhooks are matched against configured filters. If a filter matches,
-a command (which can also incorporate data contained in the received
-header or body) is executed.
-.SH OPTIONS
-.TP
-.BR "-c", " --config " <FILE>
-Provide a path to the configuration file.
-.TP
-.BR "-h", " --help"
-Print help information.
-.TP
-.BR "-V", " --version"
-Print version information.
-.SH SUBCOMMAND
-.TP
-.B configtest
-- Verifies if the configuration can be parsed without errors.
-.TP
-.B help
-- Print the general help message or the help of the given subcommand(s).
-.SH ENVIRONMENT
-.TP
-.B ROCKET_ADDRESS
-The IP address webhookey listens on (default: 127.0.0.1).
-.TP
-.B ROCKET_PORT
-The port webhookey listens on (default: 8000).
-.TP
-.B ROCKET_WORKERS
-The numbers of threads to use (default: CPU core count).
-.TP
-.B RUST_LOG
-Set the Log level, which can be one one of "error", "warn", "info",
-"debug", "trace" (default: "error").
-.SH EXAMPLES
-.PP
-webhookey configtest
-.RS 4
-Return either "Config is OK" and return code 0 or an error description
-and return code 1.
-.RE
-.PP
-webhookey
-.RS 4
-Start webhookey.
-.RE
-.SH REPORTING BUGS
-To report any bugs file an issue at
-https://git.onders.org/finga/webhookey/issues/new?template=bug.md or
-send an email to <bug-report@onders.org>.