[release-branch.go1.15] net: don't rely on system hosts in TestCVE202133195
Also don't unnecessarily deref the error return.
Updates #46504
Fixes #46531
Change-Id: I22d14ac76776f8988fa0774bdcb5fcd801ce0185
Reviewed-on: https://go-review.googlesource.com/c/go/+/324190
Trust: David Chase <drchase@google.com>
Trust: Damien Neil <dneil@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
(cherry picked from commit dd7ba3ba2c860c40be6d70b63d4a678449cae80f)
Reviewed-on: https://go-review.googlesource.com/c/go/+/324333
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/src/net/dnsclient_unix_test.go b/src/net/dnsclient_unix_test.go
index 819f20b..f646629 100644
--- a/src/net/dnsclient_unix_test.go
+++ b/src/net/dnsclient_unix_test.go
@@ -1898,61 +1898,62 @@
// Change the default resolver to match our manipulated resolver
originalDefault := DefaultResolver
DefaultResolver = &r
- defer func() {
- DefaultResolver = originalDefault
- }()
+ defer func() { DefaultResolver = originalDefault }()
+ // Redirect host file lookups.
+ defer func(orig string) { testHookHostsPath = orig }(testHookHostsPath)
+ testHookHostsPath = "testdata/hosts"
_, err := r.LookupCNAME(context.Background(), "golang.org")
if expected := "lookup golang.org: CNAME target is invalid"; err == nil || err.Error() != expected {
- t.Errorf("Resolver.LookupCNAME returned unexpected error, got %q, want %q", err.Error(), expected)
+ t.Errorf("Resolver.LookupCNAME returned unexpected error, got %q, want %q", err, expected)
}
_, err = LookupCNAME("golang.org")
if expected := "lookup golang.org: CNAME target is invalid"; err == nil || err.Error() != expected {
- t.Errorf("LookupCNAME returned unexpected error, got %q, want %q", err.Error(), expected)
+ t.Errorf("LookupCNAME returned unexpected error, got %q, want %q", err, expected)
}
_, _, err = r.LookupSRV(context.Background(), "target", "tcp", "golang.org")
if expected := "lookup golang.org: SRV target is invalid"; err == nil || err.Error() != expected {
- t.Errorf("Resolver.LookupSRV returned unexpected error, got %q, want %q", err.Error(), expected)
+ t.Errorf("Resolver.LookupSRV returned unexpected error, got %q, want %q", err, expected)
}
_, _, err = LookupSRV("target", "tcp", "golang.org")
if expected := "lookup golang.org: SRV target is invalid"; err == nil || err.Error() != expected {
- t.Errorf("LookupSRV returned unexpected error, got %q, want %q", err.Error(), expected)
+ t.Errorf("LookupSRV returned unexpected error, got %q, want %q", err, expected)
}
_, _, err = r.LookupSRV(context.Background(), "hdr", "tcp", "golang.org")
if expected := "lookup golang.org: SRV header name is invalid"; err == nil || err.Error() != expected {
- t.Errorf("Resolver.LookupSRV returned unexpected error, got %q, want %q", err.Error(), expected)
+ t.Errorf("Resolver.LookupSRV returned unexpected error, got %q, want %q", err, expected)
}
_, _, err = LookupSRV("hdr", "tcp", "golang.org")
if expected := "lookup golang.org: SRV header name is invalid"; err == nil || err.Error() != expected {
- t.Errorf("LookupSRV returned unexpected error, got %q, want %q", err.Error(), expected)
+ t.Errorf("LookupSRV returned unexpected error, got %q, want %q", err, expected)
}
_, err = r.LookupMX(context.Background(), "golang.org")
if expected := "lookup golang.org: MX target is invalid"; err == nil || err.Error() != expected {
- t.Errorf("Resolver.LookupMX returned unexpected error, got %q, want %q", err.Error(), expected)
+ t.Errorf("Resolver.LookupMX returned unexpected error, got %q, want %q", err, expected)
}
_, err = LookupMX("golang.org")
if expected := "lookup golang.org: MX target is invalid"; err == nil || err.Error() != expected {
- t.Errorf("LookupMX returned unexpected error, got %q, want %q", err.Error(), expected)
+ t.Errorf("LookupMX returned unexpected error, got %q, want %q", err, expected)
}
_, err = r.LookupNS(context.Background(), "golang.org")
if expected := "lookup golang.org: NS target is invalid"; err == nil || err.Error() != expected {
- t.Errorf("Resolver.LookupNS returned unexpected error, got %q, want %q", err.Error(), expected)
+ t.Errorf("Resolver.LookupNS returned unexpected error, got %q, want %q", err, expected)
}
_, err = LookupNS("golang.org")
if expected := "lookup golang.org: NS target is invalid"; err == nil || err.Error() != expected {
- t.Errorf("LookupNS returned unexpected error, got %q, want %q", err.Error(), expected)
+ t.Errorf("LookupNS returned unexpected error, got %q, want %q", err, expected)
}
- _, err = r.LookupAddr(context.Background(), "1.2.3.4")
- if expected := "lookup 1.2.3.4: PTR target is invalid"; err == nil || err.Error() != expected {
- t.Errorf("Resolver.LookupAddr returned unexpected error, got %q, want %q", err.Error(), expected)
+ _, err = r.LookupAddr(context.Background(), "192.0.2.42")
+ if expected := "lookup 192.0.2.42: PTR target is invalid"; err == nil || err.Error() != expected {
+ t.Errorf("Resolver.LookupAddr returned unexpected error, got %q, want %q", err, expected)
}
- _, err = LookupAddr("1.2.3.4")
- if expected := "lookup 1.2.3.4: PTR target is invalid"; err == nil || err.Error() != expected {
- t.Errorf("LookupAddr returned unexpected error, got %q, want %q", err.Error(), expected)
+ _, err = LookupAddr("192.0.2.42")
+ if expected := "lookup 192.0.2.42: PTR target is invalid"; err == nil || err.Error() != expected {
+ t.Errorf("LookupAddr returned unexpected error, got %q, want %q", err, expected)
}
}
