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Add yet another pattern to IsNotExist #108

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merged 1 commit into from
Oct 23, 2023
Merged

Add yet another pattern to IsNotExist #108

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18 changes: 12 additions & 6 deletions iptables/iptables.go
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Original file line number Diff line number Diff line change
Expand Up @@ -45,15 +45,21 @@ func (e *Error) Error() string {
return fmt.Sprintf("running %v: exit status %v: %v", e.cmd.Args, e.ExitStatus(), e.msg)
}

var isNotExistPatterns = []string{
"Bad rule (does a matching rule exist in that chain?).\n",
"No chain/target/match by that name.\n",
"No such file or directory",
"does not exist",
}

// IsNotExist returns true if the error is due to the chain or rule not existing
func (e *Error) IsNotExist() bool {
if e.ExitStatus() != 1 {
return false
for _, str := range isNotExistPatterns {
if strings.Contains(e.msg, str) {
return true
}
}
msgNoRuleExist := "Bad rule (does a matching rule exist in that chain?).\n"
msgNoChainExist := "No chain/target/match by that name.\n"
msgENOENT := "No such file or directory"
return strings.Contains(e.msg, msgNoRuleExist) || strings.Contains(e.msg, msgNoChainExist) || strings.Contains(e.msg, msgENOENT)
return false
}

// Protocol to differentiate between IPv4 and IPv6
Expand Down