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feat: add addr(bytes32) ethereum address resolver
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,4 @@ | ||
| .env | ||
| README.md | ||
| LICENSE | ||
| LICENSE | ||
| .vscode |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| // Copyright 2017 - 2023 Weald Technology Trading. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| // Package namehash provides functions to hash ENS names. | ||
| // Minor modifications to error returns have been made to fit the context of this project. | ||
|
|
||
| package namehash | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "golang.org/x/crypto/sha3" | ||
| "golang.org/x/net/idna" | ||
| ) | ||
|
|
||
| var ( | ||
| p = idna.New(idna.MapForLookup(), idna.ValidateLabels(false), idna.CheckHyphens(false), idna.StrictDomainName(false), idna.Transitional(false)) | ||
| pStrict = idna.New(idna.MapForLookup(), idna.ValidateLabels(false), idna.CheckHyphens(false), idna.StrictDomainName(true), idna.Transitional(false)) | ||
| ) | ||
|
|
||
| // Normalize normalizes a name according to the ENS rules. | ||
| func Normalize(input string) (string, error) { | ||
| output, err := p.ToUnicode(input) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to convert to standard unicode: %v", err) | ||
| } | ||
| // If the name started with a period then ToUnicode() removes it, but we want to keep it. | ||
| if strings.HasPrefix(input, ".") && !strings.HasPrefix(output, ".") { | ||
| output = "." + output | ||
| } | ||
|
|
||
| return output, nil | ||
| } | ||
|
|
||
| // LabelHash generates a simple hash for a piece of a name. | ||
| func LabelHash(label string) ([32]byte, error) { | ||
| var hash [32]byte | ||
|
|
||
| normalizedLabel, err := Normalize(label) | ||
| if err != nil { | ||
| return [32]byte{}, err | ||
| } | ||
|
|
||
| sha := sha3.NewLegacyKeccak256() | ||
| if _, err = sha.Write([]byte(normalizedLabel)); err != nil { | ||
| return [32]byte{}, fmt.Errorf("failed to write hash: %v", err) | ||
| } | ||
| sha.Sum(hash[:0]) | ||
|
|
||
| return hash, nil | ||
| } | ||
|
|
||
| // NameHash generates a hash from a name that can be used to | ||
| // look up the name in ENS. | ||
| func NameHash(name string) ([32]byte, error) { | ||
| var hash [32]byte | ||
|
|
||
| if name == "" { | ||
| return hash, nil | ||
| } | ||
|
|
||
| normalizedName, err := Normalize(name) | ||
| if err != nil { | ||
| return [32]byte{}, err | ||
| } | ||
| parts := strings.Split(normalizedName, ".") | ||
| for i := len(parts) - 1; i >= 0; i-- { | ||
| if hash, err = nameHashPart(hash, parts[i]); err != nil { | ||
| return [32]byte{}, err | ||
| } | ||
| } | ||
|
|
||
| return hash, nil | ||
| } | ||
|
|
||
| func nameHashPart(currentHash [32]byte, name string) ([32]byte, error) { | ||
| var hash [32]byte | ||
|
|
||
| sha := sha3.NewLegacyKeccak256() | ||
| if _, err := sha.Write(currentHash[:]); err != nil { | ||
| return [32]byte{}, fmt.Errorf("failed to write hash: %v", err) | ||
| } | ||
| nameSha := sha3.NewLegacyKeccak256() | ||
| if _, err := nameSha.Write([]byte(name)); err != nil { | ||
| return [32]byte{}, fmt.Errorf("failed to write hash: %v", err) | ||
| } | ||
| nameHash := nameSha.Sum(nil) | ||
| if _, err := sha.Write(nameHash); err != nil { | ||
| return [32]byte{}, fmt.Errorf("failed to write hash: %v", err) | ||
| } | ||
| sha.Sum(hash[:0]) | ||
|
|
||
| return hash, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| // Copyright 2017 Weald Technology Trading | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| // Package namehash provides functions to hash ENS names. | ||
| // Minor modifications to error returns have been made to fit the context of this project. | ||
|
|
||
| package namehash | ||
|
|
||
| import ( | ||
| "encoding/hex" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestNameHash(t *testing.T) { | ||
| tests := []struct { | ||
| input string | ||
| output string | ||
| err error | ||
| }{ | ||
| {"", "0000000000000000000000000000000000000000000000000000000000000000", nil}, | ||
| {"eth", "93cdeb708b7545dc668eb9280176169d1c33cfd8ed6f04690a0bcc88a93fc4ae", nil}, | ||
| {"Eth", "93cdeb708b7545dc668eb9280176169d1c33cfd8ed6f04690a0bcc88a93fc4ae", nil}, | ||
| {".eth", "8cc9f31a5e7af6381efc751d98d289e3f3589f1b6f19b9b989ace1788b939cf7", nil}, | ||
| {"resolver.eth", "fdd5d5de6dd63db72bbc2d487944ba13bf775b50a80805fe6fcaba9b0fba88f5", nil}, | ||
| {"foo.eth", "de9b09fd7c5f901e23a3f19fecc54828e9c848539801e86591bd9801b019f84f", nil}, | ||
| {"Foo.eth", "de9b09fd7c5f901e23a3f19fecc54828e9c848539801e86591bd9801b019f84f", nil}, | ||
| {"foo..eth", "4143a5b2f547838d3b49982e3f2ec6a26415274e5b9c3ffeb21971bbfdfaa052", nil}, | ||
| {"bar.foo.eth", "275ae88e7263cdce5ab6cf296cdd6253f5e385353fe39cfff2dd4a2b14551cf3", nil}, | ||
| {"Bar.foo.eth", "275ae88e7263cdce5ab6cf296cdd6253f5e385353fe39cfff2dd4a2b14551cf3", nil}, | ||
| {"addr.reverse", "91d1777781884d03a6757a803996e38de2a42967fb37eeaca72729271025a9e2", nil}, | ||
| {"🚣♂️.eth", "37f681401d88093779de0c910da1f9437759c2181f61b5dbc9e3ef0d9f192513", nil}, | ||
| {"vitalik.eth", "ee6c4522aab0003e8d14cd40a6af439055fd2577951148c14b6cea9a53475835", nil}, | ||
| {"nIcK.eTh", "05a67c0ee82964c4f7394cdd47fee7f4d9503a23c09c38341779ea012afe6e00", nil}, | ||
| {"brantly.cash", "3cb8d24c572869f7ec5ec5e882243b4790de146ac11267f58fd856d290b593db", nil}, | ||
| {"🏴☠.art", "4696ec532b8c8bb20dcfa6ae6da710422611ea03fc77aebc0284d0f12c93f768", nil}, | ||
| {"öbb.eth", "2774094517aaa884fc7183cf681150529b9acc7c9e7b71cf3a470200135a20b4", nil}, | ||
| {"Öbb.eth", "2774094517aaa884fc7183cf681150529b9acc7c9e7b71cf3a470200135a20b4", nil}, | ||
| {"💷pound.eth", "2df37f43de8b5ab870370770e78e4503ea1199e46c16db7a4a9320732dbb42bc", nil}, | ||
| {"firstwrappedname.eth", "c44eec7fb870ae46d4ef4392d33fbbbdc164e7817a86289a1fe30e5f4d98ae85", nil}, | ||
| {"A.™️.Ю", "f48b2941db0e23087a8922f81c0b7dd1b83fa06657080fd28986f9a19752a093", nil}, | ||
| {"Ⅷ.eth", "a468899f828f5d80c85c0e538018ba6516713a06aa6d92e8482ee91886630ae9", nil}, | ||
| {"⨌.eth", "f0b6090714f4ab523b1c574077018fe49dc934f9334d092e412b3802898b2cee", nil}, | ||
| {"-test.test-.t-e--s---t", "0d26fe02b1eb3fdcd7db77a432c60b20d2d8c4ef9012ef06ad3ae7bf12adb225", nil}, | ||
| {"te--st.eth", "bea7eca33545aacbf3d6f1512c119aa7f04506d61354001e7af31ba73374b2c3", nil}, | ||
| {"__ab.eth", "b3edf1f0b8dc6168b65d034c76b5670813514ac8867115e63b51eb496f3791a0", nil}, | ||
| {"a_b.eth", "b99946eaeb8a557bc6329faf95d1b885ba608393109cb9609440acc8e6761c4f", nil}, | ||
| {"ß.eth", "86262f2349fb651f652e87141e6db5856cd6e40f92d0b9dc486aaf8f9c509cff", nil}, | ||
| {"💩💩💩.eth", "a74feb0e5fa5606d3e650275e3bb3873b006a10d558389d3ce2abbe681fcfc8e", nil}, | ||
| {"آٍَ.ऩँं", "a1e3d72c39aec7ebcf62906994da7adc76b8a3ffa27e52b838abb24569610146", nil}, | ||
| {"פעילותהבינאום.eth", "7900040d82be5a569289b0f7b30266d796e1ded13293557ed061b39367357a62", nil}, | ||
| {"ஶ்ரீ.ஸ்ரீ", "ef5f28b8adff4b9b86b67c40792ef314ecd92a2123a72185b1411835cce5c110", nil}, | ||
| {"🇸🇦سلمان.eth", "3484f75c4dbf69503310126dbfc02eec224eab46851de2288092d58785670808", nil}, | ||
| {"0a〇.黑a8", "d7bc21f0cb86cafe27ebafe8e788b1c63b736467c65611110575f385a4d01e1f", nil}, | ||
| {"apple.дррӏе.аррӏе.aррӏе", "a5428a7fc57a099d7926ac7fa30169933df167acf3d8fba6f5830e6cf7442b31", nil}, | ||
| {"۰۱۲۳۷۸۹.eth", "430bc5e65fd3122d45c00dbce4e8e1b51be675794e548f92558dc4cecafd6418", nil}, | ||
| {"𓀀𓀁𓀂.eth", "36f75325f4013011b96014606224f03c77366d89caf480a1060d7453edaf5c98", nil}, | ||
| {"𓆏➡🐸️.eth", "f2663423c7aadf794d6f84addcfee1f877458d86c20740954482094a20985228", nil}, | ||
| {"ⒶⒷⒸⒹⒺⒻⒼⒽⒾⒿⓀⓁⓂⓃⓄⓅⓆⓇⓈⓉⓊⓋⓌⓍⓎⓏ.eth", "254a068876bdac64ad35425816bf444fbe9a26ec19287f47e663f928727ff69c", nil}, | ||
| } | ||
|
|
||
| for _, tt := range tests { | ||
| result, err := NameHash(tt.input) | ||
| if tt.err == nil { | ||
| if err != nil { | ||
| t.Fatalf("unexpected error %v", err) | ||
| } | ||
| if tt.output != hex.EncodeToString(result[:]) { | ||
| t.Errorf("Failure: %v => %v (expected %v)\n", tt.input, hex.EncodeToString(result[:]), tt.output) | ||
| } | ||
| } else { | ||
| if err == nil { | ||
| t.Fatalf("missing expected error") | ||
| } | ||
| if tt.err.Error() != err.Error() { | ||
| t.Errorf("unexpected error value %v", err) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func TestLabelHash(t *testing.T) { | ||
| tests := []struct { | ||
| input string | ||
| output string | ||
| err error | ||
| }{ | ||
| {"", "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", nil}, | ||
| {"eth", "4f5b812789fc606be1b3b16908db13fc7a9adf7ca72641f84d75b47069d3d7f0", nil}, | ||
| {"foo", "41b1a0649752af1b28b3dc29a1556eee781e4a4c3a1f7f53f90fa834de098c4d", nil}, | ||
| } | ||
|
|
||
| for _, tt := range tests { | ||
| output, err := LabelHash(tt.input) | ||
| if tt.err == nil { | ||
| if err != nil { | ||
| t.Fatalf("unexpected error %v", err) | ||
| } | ||
| if tt.output != hex.EncodeToString(output[:]) { | ||
| t.Errorf("Failure: %v => %v (expected %v)\n", tt.input, hex.EncodeToString(output[:]), tt.output) | ||
| } | ||
| } else { | ||
| if err == nil { | ||
| t.Fatalf("missing expected error") | ||
| } | ||
| if tt.err.Error() != err.Error() { | ||
| t.Errorf("unexpected error value %v", err) | ||
| } | ||
| } | ||
| } | ||
| } |