[server] Restore Java 1.8 compat for now

Since this is really the only place so far, refactor to support older
Java. Let's move to 11+ after the next release.

2 files changed, 12 insertions, 4 deletions

diff --git a/dozentenmodulserver/pom.xml b/dozentenmodulserver/pom.xml
index 3493feb8..26666ac5 100644
--- a/dozentenmodulserver/pom.xml
+++ b/dozentenmodulserver/pom.xml
@@ -140,9 +140,9 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>11</source>
-					<target>11</target>
-					<release>11</release>
+					<source>1.8</source>
+					<target>1.8</target>
+					<release>8</release>
 					<compilerArgument>-Xlint:all</compilerArgument>
 				</configuration>
 			</plugin>
diff --git a/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/thrift/JsonHttpListener.java b/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/thrift/JsonHttpListener.java
index 55c09756..cec5dd5f 100644
--- a/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/thrift/JsonHttpListener.java
+++ b/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/thrift/JsonHttpListener.java
@@ -57,7 +57,15 @@ public class JsonHttpListener extends NanoHTTPD {
 				return new Response(Response.Status.BAD_REQUEST, "text/plain; charset=UTF-8",
 						"No Content-Length provided");
 
-			byte[] buffer = session.getInputStream().readNBytes(len);
+			byte[] buffer = new byte[len];
+			int pos = 0;
+			while (pos < len) {
+				int ret = session.getInputStream().read(buffer, pos, len - pos);
+				if (ret <= 0)
+					return new Response(Response.Status.BAD_REQUEST, "text/plain; charset=UTF-8",
+							"Request content truncated (" + pos + "/" + len + ")");
+				pos += ret;
+			}
 			TMemoryBuffer inbuffer = new TMemoryBuffer(buffer.length);
 			inbuffer.write(buffer);
 			TProtocol inprotocol = new TJSONProtocol(inbuffer);