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cherry-pick: dhcpd: imp normalization, validation

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Updates #3056.

Squashed commit of the following:

commit 875954fc8d59980a39b03032007cbc15d87801ea
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed May 5 19:54:24 2021 +0300

    all: imp err msgs

commit c6ea471038ce28f608084b59d3447ff64124260f
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed May 5 17:55:12 2021 +0300

    dhcpd: imp normalization, validation
This commit is contained in:
Ainar Garipov
2021-05-06 13:02:48 +03:00
committed by Ainar Garipov
parent e1ac2590c9
commit 66d47b1462
10 changed files with 299 additions and 273 deletions
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36
internal/aghnet/addr_test.go
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@@ -95,40 +95,46 @@ func TestValidateDomainName(t *testing.T) {
}, {
name: "empty",
in: "",
wantErrMsg: `domain name is empty`,
wantErrMsg: `validating domain name "": domain name is empty`,
}, {
name: "bad_symbol",
in: "!!!",
wantErrMsg: `invalid domain name label at index 0: ` +
`invalid char '!' at index 0 in "!!!"`,
wantErrMsg: `validating domain name "!!!": invalid domain name label at index 0: ` +
`validating label "!!!": invalid char '!' at index 0`,
}, {
name: "bad_length",
in: longDomainName,
wantErrMsg: `"` + longDomainName + `" is too long, max: 253`,
wantErrMsg: `validating domain name "` + longDomainName + `": too long, max: 253`,
}, {
name: "bad_label_length",
in: longLabelDomainName,
wantErrMsg: `invalid domain name label at index 0: "` + longLabel +
`" is too long, max: 63`,
wantErrMsg: `validating domain name "` + longLabelDomainName + `": ` +
`invalid domain name label at index 0: validating label "` + longLabel +
`": label is too long, max: 63`,
}, {
name: "bad_label_empty",
in: "example..com",
wantErrMsg: `invalid domain name label at index 1: label is empty`,
name: "bad_label_empty",
in: "example..com",
wantErrMsg: `validating domain name "example..com": ` +
`invalid domain name label at index 1: ` +
`validating label "": label is empty`,
}, {
name: "bad_label_first_symbol",
in: "example.-aa.com",
wantErrMsg: `invalid domain name label at index 1:` +
` invalid char '-' at index 0 in "-aa"`,
wantErrMsg: `validating domain name "example.-aa.com": ` +
`invalid domain name label at index 1: ` +
`validating label "-aa": invalid char '-' at index 0`,
}, {
name: "bad_label_last_symbol",
in: "example-.aa.com",
wantErrMsg: `invalid domain name label at index 0:` +
` invalid char '-' at index 7 in "example-"`,
wantErrMsg: `validating domain name "example-.aa.com": ` +
`invalid domain name label at index 0: ` +
`validating label "example-": invalid char '-' at index 7`,
}, {
name: "bad_label_symbol",
in: "example.a!!!.com",
wantErrMsg: `invalid domain name label at index 1:` +
` invalid char '!' at index 1 in "a!!!"`,
wantErrMsg: `validating domain name "example.a!!!.com": ` +
`invalid domain name label at index 1: ` +
`validating label "a!!!": invalid char '!' at index 1`,
}}
for _, tc := range testCases {