GuillaumeHemmen/docker-bench-security
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Limit the number of reported items

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In some evironments, there may be a very large number of images,
containers, etc not satisfying a given test. For example, in one
environment, we saw *378k* images not satisfying 4.6, mostly because
the customer was never cleaning up old images.

To avoid overly long lists of items, add a new option "-n LIMIT" that
limits the number of items included in JSON output. When the limit is
reached, the list will be truncated and a trailing (truncated) will be
added. Here's an example:

```
{"id": "5.9", "desc": "Ensure the host's network namespace is not
shared", "result": "WARN", "details": "Containers running with
networking mode 'host':  k8s_POD_storage-provisioner_kube-system_ef960ef5-62c5-11e9-802f-08002719228f_0
k8s_POD_kube-proxy-xfln8_kube-system_ee70c4c3-62c5-11e9-802f-08002719228f_0 (truncated)",
"items":
["k8s_POD_storage-provisioner_kube-system_ef960ef5-62c5-11e9-802f-08002719228f_0","k8s_POD_kube-proxy-xfln8_kube-system_ee70c4c3-62c5-11e9-802f-08002719228f_0","(truncated)"]},
```

Signed-off-by: Mark Stemm <mark.stemm@gmail.com>
This commit is contained in:
Mark Stemm 2020-07-10 13:00:29 -07:00
commit 4cfb58f675
2 changed files with 24 additions and 3 deletions

19
output_lib.sh
View file

@ -75,7 +75,22 @@ resulttestjson() {
printf "\"result\": \"%s\", \"details\": \"%s\"}" "$1" "$2" | tee -a "$logger.json" 2>/dev/null 1>&2
else
# Result also includes details and a list of items. Add that directly to details and to an array property "items"
itemsJson=$(printf "["; ISEP=""; for item in $3; do printf "%s\"%s\"" "$ISEP" "$item"; ISEP=","; done; printf "]")
printf "\"result\": \"%s\", \"details\": \"%s: %s\", \"items\": %s}" "$1" "$2" "$3" "$itemsJson" | tee -a "$logger.json" 2>/dev/null 1>&2
# Also limit the number of items to $limit, if $limit is non-zero
if [ $limit != 0 ]; then
truncItems=""
ITEM_COUNT=0
for item in $3; do
truncItems="$truncItems $item"
ITEM_COUNT=$((ITEM_COUNT + 1));
if [ "$ITEM_COUNT" == "$limit" ]; then
truncItems="$truncItems (truncated)"
break;
fi
done
else
truncItems=$3
fi
itemsJson=$(printf "["; ISEP=""; ITEMCOUNT=0; for item in $truncItems; do printf "%s\"%s\"" "$ISEP" "$item"; ISEP=","; done; printf "]")
printf "\"result\": \"%s\", \"details\": \"%s: %s\", \"items\": %s}" "$1" "$2" "$truncItems" "$itemsJson" | tee -a "$logger.json" 2>/dev/null 1>&2
fi
}