remove the workaround introduced in 36acf1a00a and update the Dockerfile

Dockerfile

@@ -1,4 +1,8 @@
-FROM openjdk:11
+FROM adoptopenjdk/openjdk11:alpine-jre
+RUN addgroup -S spring && adduser -S spring -G spring
+#RUN groupadd -r spring && useradd -r -g spring spring # for openjdk:xx builds
+USER spring:spring
 ARG JAR_FILE=build/libs/*.jar
 COPY ${JAR_FILE} thecitadelofricks.jar
-ENTRYPOINT ["java","-jar","/thecitadelofricks.jar"] 
+ENTRYPOINT ["java","-Djavax.net.ssl.trustStore=/tcor/cacerts", "-Djavax.net.ssl.trustStorePassword=changeit", "-jar","/thecitadelofricks.jar"]
+VOLUME /tcor

src/main/kotlin/org/mosad/thecitadelofricks/hsoparser/CourseListParser.kt

@@ -26,17 +26,10 @@ import org.jsoup.Jsoup
 import org.mosad.thecitadelofricks.Course
 import org.slf4j.LoggerFactory
 import java.net.SocketTimeoutException
-import java.security.KeyManagementException
-import java.security.cert.CertificateException
-import java.security.cert.X509Certificate
-import javax.net.ssl.SSLContext
-import javax.net.ssl.SSLSocketFactory
-import javax.net.ssl.TrustManager
-import javax.net.ssl.X509TrustManager
 
 class CourseListParser {
 
-    private var logger: org.slf4j.Logger = LoggerFactory.getLogger(MensaParser::class.java)
+    private var logger: org.slf4j.Logger = LoggerFactory.getLogger(CourseListParser::class.java)
 
     /**
      * return a list of all courses at courseListURL
@@ -46,7 +39,7 @@ class CourseListParser {
     fun getCourseLinks(courseListURL: String): HashMap<String, Course>? {
         val courseLinkList = HashMap<String, Course>()
         try {
-            val courseHTML = Jsoup.connect(courseListURL).sslSocketFactory(socketFactory()).get()
+            val courseHTML = Jsoup.connect(courseListURL).get()
 
             courseHTML.select("ul.index-group").select("li.Class").select("a[href]").forEachIndexed { _, element ->
                 courseLinkList[element.text()] = Course(
@@ -54,6 +47,7 @@ class CourseListParser {
                     element.attr("href").replace("http", "https")
                 )
             }
+            logger.info("successfully retrieved course List")
         } catch (ex: SocketTimeoutException) {
             logger.warn("timeout from hs-offenburg.de, updating on next attempt!")
             return null
@@ -64,34 +58,4 @@ class CourseListParser {
 
         return courseLinkList
     }
-
-    // Hack to ignore ssl errors while reading
-    private fun socketFactory(): SSLSocketFactory {
-        val trustAllCerts = arrayOf<TrustManager>(object : X509TrustManager {
-            @Throws(CertificateException::class)
-            override fun checkClientTrusted(chain: Array<X509Certificate>, authType: String) {
-            }
-
-            @Throws(CertificateException::class)
-            override fun checkServerTrusted(chain: Array<X509Certificate>, authType: String) {
-            }
-
-            override fun getAcceptedIssuers(): Array<X509Certificate> {
-                return arrayOf()
-            }
-        })
-
-        try {
-            val sslContext = SSLContext.getInstance("TLS")
-            sslContext.init(null, trustAllCerts, java.security.SecureRandom())
-            return sslContext.socketFactory
-        } catch (e: Exception) {
-            when (e) {
-                is RuntimeException, is KeyManagementException -> {
-                    throw RuntimeException("Failed to create a SSL socket factory", e)
-                }
-                else -> throw e
-            }
-        }
-    }
 }

src/main/kotlin/org/mosad/thecitadelofricks/hsoparser/TimetableParser.kt

@@ -27,13 +27,6 @@ import org.jsoup.nodes.Document
 import org.mosad.thecitadelofricks.Lesson
 import org.mosad.thecitadelofricks.TimetableWeek
 import org.slf4j.LoggerFactory
-import java.security.KeyManagementException
-import java.security.cert.CertificateException
-import java.security.cert.X509Certificate
-import javax.net.ssl.SSLContext
-import javax.net.ssl.SSLSocketFactory
-import javax.net.ssl.TrustManager
-import javax.net.ssl.X509TrustManager
 
 class TimetableParser {
     private var logger: org.slf4j.Logger = LoggerFactory.getLogger(TimetableParser::class.java)
@@ -47,7 +40,7 @@ class TimetableParser {
      */
     fun getTimeTable(timetableURL: String): TimetableWeek {
         return try {
-            parseTimeTable(Jsoup.connect(timetableURL).sslSocketFactory(socketFactory()).get())
+            parseTimeTable(Jsoup.connect(timetableURL).get())
         } catch (gex: Exception) {
             logger.error("general TimetableParser error", gex)
             TimetableWeek()
@@ -129,7 +122,7 @@ class TimetableParser {
      */
     fun getWeekNumberYear(timetableURL: String): Int {
         return try {
-            parseWeekNumberYear(Jsoup.connect(timetableURL).sslSocketFactory(socketFactory()).get())
+            parseWeekNumberYear(Jsoup.connect(timetableURL).get())
         } catch (gex: Exception) {
             logger.error("general TimetableParser error", gex)
             0
@@ -189,33 +182,4 @@ class TimetableParser {
         println(" \n")
     }
 
-    // Hack to ignore ssl errors while reading
-    private fun socketFactory(): SSLSocketFactory {
-        val trustAllCerts = arrayOf<TrustManager>(object : X509TrustManager {
-            @Throws(CertificateException::class)
-            override fun checkClientTrusted(chain: Array<X509Certificate>, authType: String) {
-            }
-
-            @Throws(CertificateException::class)
-            override fun checkServerTrusted(chain: Array<X509Certificate>, authType: String) {
-            }
-
-            override fun getAcceptedIssuers(): Array<X509Certificate> {
-                return arrayOf()
-            }
-        })
-
-        try {
-            val sslContext = SSLContext.getInstance("TLS")
-            sslContext.init(null, trustAllCerts, java.security.SecureRandom())
-            return sslContext.socketFactory
-        } catch (e: Exception) {
-            when (e) {
-                is RuntimeException, is KeyManagementException -> {
-                    throw RuntimeException("Failed to create a SSL socket factory", e)
-                }
-                else -> throw e
-            }
-        }
-    }
 }

src/main/resources/application.properties

@@ -11,5 +11,5 @@ logging.level.org.springframework.web=INFO
 # ----------------------------------------
 
 # EMBEDDED SERVER CONFIGURATION (ServerProperties)
-server.address=127.0.0.1
+server.address=0.0.0.0
 server.port=8080