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aziis98
41a01244c4
Hosts accept brace groups expanded at load time: enumeration {1,2,3},
inclusive ranges {2..5,8..10} with '..' syntax, and labels {a3,a4};
several groups multiply in cartesian fashion. Leading zeros are
preserved, each expanded machine gets its host as unique ID/name.
Malformed patterns (unmatched/nested braces, non-integer or descending
ranges, extra dots) and patterns expanding past 10000 machines fail at
startup. Adds table tests plus a FuzzExpandHostPattern target; the
safety cap keeps fuzzing and real configs from blowing up memory.
52 lines
1.0 KiB
Go
52 lines
1.0 KiB
Go
package main
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import (
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"reflect"
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"strings"
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"testing"
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)
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func FuzzExpandHostPattern(f *testing.F) {
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seeds := []string{
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"server{1..3}.example.org",
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"server{1,2,3}.example.org",
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"server-{a3,a4}-{1..2}.example.org",
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"host{01..03}",
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"router.example.net",
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"host-{5..2}.example.org",
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"host-{1,2.example.org",
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"{1..10}",
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"{2..5,8..10}.example.org",
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"",
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"host-{}",
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"{1..}",
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"{..5}",
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"x}{y}",
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"{a,b}{c,d}",
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"{0..10001}",
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}
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for _, s := range seeds {
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f.Add(s)
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}
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f.Fuzz(func(t *testing.T, pattern string) {
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hosts, err := expandHostPattern(pattern)
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if err != nil {
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return
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}
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if !strings.Contains(pattern, "{") {
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if !reflect.DeepEqual(hosts, []string{pattern}) {
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t.Fatalf("pattern without braces %q expanded to %v", pattern, hosts)
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}
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return
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}
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if len(hosts) == 0 {
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t.Fatalf("pattern %q produced no hosts", pattern)
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}
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for _, h := range hosts {
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if strings.Contains(h, "{") {
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t.Fatalf("expanded host %q still contains '{' (pattern %q)", h, pattern)
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}
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}
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})
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}
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