chown finished partial files earlier

partial files are chowned by the Item baseclass to let the methods work
with them. Now, this baseclass is also responsible for chowning the
files back to root instead of having various deeper levels do this.

The consequence is that all overloaded Failed() methods now call the
Item::Failed base as their first step. The same is done for Done().

The effect is that even in partial files usually don't belong to
_apt anymore, helping sneakernets and reducing possibilities of a bad
method modifying files not belonging to them.

The change is supported by the framework not only supporting being run
as root, but with proper permission management, too, so that privilege
dropping can be tested with them.

1 files changed, 16 insertions, 15 deletions

diff --git a/test/integration/test-partial-file-support b/test/integration/test-partial-file-support
index 5ab326def..98b2f242a 100755
--- a/test/integration/test-partial-file-support
+++ b/test/integration/test-partial-file-support
@@ -52,36 +52,37 @@ cp -a ${TESTDIR}/framework $TESTFILE
 
 testrun() {
 	webserverconfig 'aptwebserver::support::range' 'true'
+	local DOWN='./downloaded/testfile'
 
-	copysource $TESTFILE 0 ./testfile
-	testdownloadfile 'no data' "${1}/testfile" './testfile' '='
+	copysource $TESTFILE 0 $DOWN
+	testdownloadfile 'no data' "${1}/testfile" "$DOWN" '='
 	testwebserverlaststatuscode '200' "$DOWNLOADLOG"
 
-	copysource $TESTFILE 20 ./testfile
-	testdownloadfile 'valid partial data' "${1}/testfile" './testfile' '='
+	copysource $TESTFILE 20 $DOWN
+	testdownloadfile 'valid partial data' "${1}/testfile" "$DOWN" '='
 	testwebserverlaststatuscode '206' "$DOWNLOADLOG"
 
-	copysource /dev/zero 20 ./testfile
-	testdownloadfile 'invalid partial data' "${1}/testfile" './testfile' '!='
+	copysource /dev/zero 20 $DOWN
+	testdownloadfile 'invalid partial data' "${1}/testfile" "$DOWN" '!='
 	testwebserverlaststatuscode '206' "$DOWNLOADLOG"
 
-	copysource $TESTFILE 1M ./testfile
-	testdownloadfile 'completely downloaded file' "${1}/testfile" './testfile' '='
+	copysource $TESTFILE 1M $DOWN
+	testdownloadfile 'completely downloaded file' "${1}/testfile" "$DOWN" '='
 	testwebserverlaststatuscode '416' "$DOWNLOADLOG"
 
-	copysource /dev/zero 1M ./testfile
-	testdownloadfile 'too-big partial file' "${1}/testfile" './testfile' '='
+	copysource /dev/zero 1M $DOWN
+	testdownloadfile 'too-big partial file' "${1}/testfile" "$DOWN" '='
 	testwebserverlaststatuscode '200' "$DOWNLOADLOG"
 
-	copysource /dev/zero 20 ./testfile
-	touch ./testfile
-	testdownloadfile 'old data' "${1}/testfile" './testfile' '='
+	copysource /dev/zero 20 $DOWN
+	touch $DOWN
+	testdownloadfile 'old data' "${1}/testfile" "$DOWN" '='
 	testwebserverlaststatuscode '200' "$DOWNLOADLOG"
 
 	webserverconfig 'aptwebserver::support::range' 'false'
 
-	copysource $TESTFILE 20 ./testfile
-	testdownloadfile 'no server support' "${1}/testfile" './testfile' '='
+	copysource $TESTFILE 20 $DOWN
+	testdownloadfile 'no server support' "${1}/testfile" "$DOWN" '='
 	testwebserverlaststatuscode '200' "$DOWNLOADLOG"
 }