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Add safe guards for relative paths

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This commit adds multiple safe guards for relative paths, ensuring they
never traverse outside the working directory.

The `SafeRelativePath` flag calculates the safe relative path based on a
relative base dir, which results in a flattened path.

The write methods of `manifestgen` make use of the `SecureJoin` as well,
to ensure writes are never outside of the given directory when used as
a lib outside of the CLI.

Signed-off-by: Hidde Beydals <hello@hidde.co>
This commit is contained in:
Hidde Beydals
2020-12-14 14:21:41 +01:00
parent 008b3b8408
commit 5ea4e814f5
13 changed files with 180 additions and 71 deletions
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docs/cmd/flux_create_kustomization.md
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@@ -50,7 +50,7 @@ flux create kustomization [name] [flags]
--health-check stringArray workload to be included in the health assessment, in the format '<kind>/<name>.<namespace>'
--health-check-timeout duration timeout of health checking operations (default 2m0s)
-h, --help help for kustomization
--path string path to the directory containing a kustomization.yaml file (default "./")
--path safeRelativePath path to the directory containing a kustomization.yaml file (default ./)
--prune enable garbage collection
--service-account string the name of the service account to impersonate when reconciling this Kustomization
--source kustomizationSource source that contains the Kubernetes manifests in the format '[<kind>/]<name>',where kind can be one of: (GitRepository, Bucket), if kind is not specified it defaults to GitRepository