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move check for working dir for exec functions

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This commit is contained in:
Natasha Sarkar
2021-08-20 10:07:32 -07:00
parent 1e1b9b484a
commit e100be620e
5 changed files with 42 additions and 20 deletions
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21
kyaml/fn/runtime/exec/exec.go
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@@ -38,16 +38,17 @@ func (c *Filter) Run(reader io.Reader, writer io.Writer) error {
cmd.Stdin = reader
cmd.Stdout = writer
cmd.Stderr = os.Stderr
if c.WorkingDir != "" {
if !filepath.IsAbs(c.WorkingDir) {
return errors.Errorf(
"relative working directory %s not allowed", c.WorkingDir)
}
if c.WorkingDir == "/" {
return errors.Errorf(
"root working directory '/' not allowed")
}
cmd.Dir = c.WorkingDir
if c.WorkingDir == "" {
return errors.Errorf("no working directory set for exec function")
}
if !filepath.IsAbs(c.WorkingDir) {
return errors.Errorf(
"relative working directory %s not allowed", c.WorkingDir)
}
if c.WorkingDir == "/" {
return errors.Errorf(
"root working directory '/' not allowed")
}
cmd.Dir = c.WorkingDir
return cmd.Run()
}