added -Pn flag to nmap (fixes error for hosts blocking nmap)

added arm docker image
added renovate.json
improved README.md

.drone.yml

@@ -1,12 +1,96 @@
 kind: pipeline
-name: default
+type: docker
+name: linux-amd64
+
+platform:
+  os: linux
+  arch: amd64
 
 steps:
+  - name: build
+    image: node:alpine
+    commands:
+      - npm install
+      - npm run build:ssr
   - name: docker
     image: plugins/docker
     settings:
+      auto_tag: true
+      auto_tag_suffix: linux-amd64
       repo: samuelph/cachet-monitor
       username:
         from_secret: USERNAME
       password:
-        from_secret: PASSWORD
+        from_secret: PASSWORD
+
+trigger:
+  branch:
+    - master
+  event:
+    - push
+
+---
+kind: pipeline
+type: docker
+name: linux-arm
+
+platform:
+  os: linux
+  arch: arm
+
+steps:
+  - name: build
+    image: node:alpine
+    commands:
+      - npm install
+      - npm run build:ssr
+  - name: docker
+    image: plugins/docker
+    settings:
+      auto_tag: true
+      auto_tag_suffix: linux-arm
+      repo: samuelph/cachet-monitor
+      username:
+        from_secret: USERNAME
+      password:
+        from_secret: PASSWORD
+    when:
+      branch:
+        - master
+      event:
+        - push
+
+---
+kind: pipeline
+type: docker
+name: manifest
+
+platform:
+  os: linux
+  arch: arm
+
+steps:
+  - name: publish
+    image: plugins/manifest
+    settings:
+      auto_tag: true
+      ignore_missing: true
+      target: samuelph/cachet-monitor
+      template: samuelph/cachet-monitor:OS-ARCH
+      platforms:
+        - linux/amd64
+        - linux/arm
+      username:
+        from_secret: USERNAME
+      password:
+        from_secret: PASSWORD
+
+depends_on:
+  - linux-amd64
+  - linux-arm
+
+trigger:
+  branch:
+    - master
+  event:
+    - push

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:13-alpine
+FROM node:14.5.0-alpine
 
 MAINTAINER mail@sp-codes.de
 
@@ -11,4 +11,4 @@ RUN mkdir -p /monitor/data \
   && npm install \
   && apk del git
 
-CMD ["node", "index.js"]
+CMD ["node", "index.js"]

README.md

@@ -95,9 +95,11 @@ services:
    ```bash
    npm run start
    ```
+   
+   __Important: If you want `UDP` checks, you need to run it as `root`, because `nmap` allows `UDP` scans only for `root`.__
 
 ## License
 
 [![GNU GPLv3 Image](https://www.gnu.org/graphics/gplv3-127x51.png)](https://www.gnu.org/licenses/gpl-3.0)
 
-cachet-monitor is Free Software: It is licensed under GNU GPL v3 (See [LICENSE](LICENSE) for more information).
+cachet-monitor is Free Software: It is licensed under GNU GPL v3 (See [LICENSE](LICENSE) for more information).

index.js

@@ -57,26 +57,32 @@ const checkHttp = async (url, performanceTimeout, requestTimeout) => {
 const checkPort = async (host, port, type, performanceTimeout, requestTimeout) => {
     return await new Promise(resolve => {
         nmap.scan({
+            flags: ['-Pn'],
             range: [host],
             ports: port.toString(),
             timeout: requestTimeout,
             udp: type === 'udp'
         }, (error, report) => {
-            if (error) {
+            try {
-                resolve({status: "OFFLINE", message: error});
+                if (error) {
-            } else {
+                    resolve({status: "OFFLINE", message: error});
-                const result = report[host].host[0];
-                const time = parseInt(result.item.endtime) - parseInt(result.item.starttime);
-                const status = result.ports[0].port[0].state[0].item;
-                if (status.state.includes('open')) {
-                    if (time > performanceTimeout * 1000) {
-                        resolve({status: "SLOW", message: status.state});
-                    } else {
-                        resolve({status: "ONLINE", message: status.state});
-                    }
                 } else {
-                    resolve({status: "OFFLINE", message: status.state});
+                    const result = report[host].host[0];
+                    const time = parseInt(result.item.endtime) - parseInt(result.item.starttime);
+                    const status = result.ports[0].port[0].state[0].item;
+                    if (status.state.includes('open')) {
+                        if (time > performanceTimeout * 1000) {
+                            resolve({status: "SLOW", message: status.state});
+                        } else {
+                            resolve({status: "ONLINE", message: status.state});
+                        }
+                    } else {
+                        resolve({status: "OFFLINE", message: status.state});
+                    }
                 }
+            } catch (e) {
+                console.error(e);
+                resolve({status: "OFFLINE", message: 'an unexpected error occurred'});
             }
         });
     });

renovate.json

@@ -0,0 +1,9 @@
+{
+  "assignees": [
+    "samuel-p"
+  ],
+  "baseBranches": [
+    "master"
+  ],
+  "rangeStrategy": "bump"
+}