Adding GUI update feature (server-side)

install.sh

@@ -104,6 +104,10 @@ create_directory() {
     cp -Rf ./* /usr/share/tinycheck
 }
 
+get_version() {
+    git tag | tail -n 1 > /usr/share/tinycheck/VERSION
+}
+
 generate_certificate() {
     # Generating SSL certificate for the backend.
     echo -e "[+] Generating SSL certificate for the backend"
@@ -444,6 +448,7 @@ else
     check_operating_system
     check_interfaces
     create_directory
+    get_version
     set_userlang
     set_credentials
     set_kioskmode

server/frontend/app/blueprints/update.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from flask import jsonify, Blueprint
+from app.classes.update import Update
+
+update_bp = Blueprint("update", __name__)
+
+
+@update_bp.route("/check", methods=["GET"])
+def check():
+    """ Check the presence of new version """
+    return jsonify(Update().check_version())
+
+
+@update_bp.route("/process", methods=["GET"])
+def process():
+    """ Check the presence of new version """
+    return jsonify(Update().update_instance())

server/frontend/app/classes/update.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from app.utils import read_config
+import subprocess as sp
+import requests
+import json
+import os
+import re
+
+
+class Update(object):
+
+    def __init__(self):
+        self.project_url = "https://api.github.com/repos/KasperskyLab/TinyCheck/tags"
+        self.app_path = "/usr/share/tinycheck"
+        return None
+
+    def check_version(self):
+        """
+            Check if a new version of TinyCheck is available 
+            by quering the Github api and comparing the last
+            tag with the VERSION file content.
+        """
+        if read_config(("frontend", "update")):
+            res = requests.get(self.project_url)
+            res = json.loads(res.content.decode("utf8"))
+
+            with open(os.path.join(self.app_path, "VERSION")) as f:
+                if f.read() != res[0]["name"]:
+                    return {"status": True,
+                            "message": "A new version is available"}
+                else:
+                    return {"status": True,
+                            "message": "This is the latest version"}
+        else:
+            return {"status": False,
+                    "message": "You don't have rights to do this operation."}
+
+    def update_instance(self):
+        """
+            Update the instance by executing 
+            the update script.
+        """
+        if read_config(("frontend", "update")):
+            try:
+                os.chdir(self.app_path)
+                sp.Popen(["bash", os.path.join(self.app_path, "update.sh")])
+                return {"status": True,
+                        "message": "Update successfully launched"}
+            except:
+                return {"status": False,
+                        "message": "Issue during the update"}
+        else:
+            return {"status": False,
+                    "message": "You don't have rights to do this operation."}

server/frontend/main.py

@@ -8,6 +8,7 @@ from app.blueprints.device import device_bp
 from app.blueprints.analysis import analysis_bp
 from app.blueprints.save import save_bp
 from app.blueprints.misc import misc_bp
+from app.blueprints.update import update_bp
 from app.utils import read_config
 
 app = Flask(__name__, template_folder="../../app/frontend/dist")
@@ -42,6 +43,7 @@ app.register_blueprint(device_bp, url_prefix='/api/device')
 app.register_blueprint(analysis_bp, url_prefix='/api/analysis')
 app.register_blueprint(save_bp, url_prefix='/api/save')
 app.register_blueprint(misc_bp, url_prefix='/api/misc')
+app.register_blueprint(update_bp, url_prefix='/api/update')
 
 if __name__ == '__main__':
     if read_config(("frontend", "remote_access")):

update.sh

@@ -40,12 +40,7 @@ elif [ $PWD = "/tmp/tinycheck" ]; then
     cd /usr/share/tinycheck/app/frontend/ && npm install && npm run build
     cd /usr/share/tinycheck/app/backend/ && npm install && npm run build
 
-    echo "[+] Restarting services"
-    service tinycheck-backend restart
-    service tinycheck-frontend restart
-    service tinycheck-watchers restart
-
-    # Updating configuration with new values.
+    echo "[+] Updating current configuration with new values."
     if ! grep -q reboot_option /usr/share/tinycheck/config.yaml; then
         sed -i 's/frontend:/frontend:\n  reboot_option: true/g' /usr/share/tinycheck/config.yaml
     fi
@@ -70,5 +65,13 @@ elif [ $PWD = "/tmp/tinycheck" ]; then
         sed -i "s/free_issuers:/free_issuers:\n  - CN=R3,O=Let's Encrypt,C=US/g" /usr/share/tinycheck/config.yaml
     fi
 
+    echo "[+] Restarting services"
+    service tinycheck-backend restart
+    service tinycheck-frontend restart
+    service tinycheck-watchers restart
+
+    echo "[+] Updating the TinyCheck version"
+    cd /tmp/tinycheck && git tag | tail -n 1 > /usr/share/tinycheck/VERSION
+
     echo "[+] TinyCheck updated!"
 fi