mirror of
https://github.com/ethereum/go-ethereum.git
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clef: add go-generate directive, remove internal abidb parser tool
This commit is contained in:
Martin Holst Swende
Péter Szilágyi
parent
c36b7a3056
commit
bb9fd61b76
3 changed files with 3 additions and 139 deletions
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@ -84,7 +84,7 @@ func resources4byteJson() (*asset, error) {
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return nil, err
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}
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info := bindataFileInfo{name: "resources/4byte.json", size: 5500821, mode: os.FileMode(0664), modTime: time.Unix(1550345687, 0)}
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info := bindataFileInfo{name: "resources/4byte.json", size: 5500821, mode: os.FileMode(0664), modTime: time.Unix(1552398455, 0)}
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a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x86, 0xc8, 0x50, 0xc5, 0x1c, 0xeb, 0xbb, 0xd, 0xf9, 0x16, 0x1a, 0xde, 0xa0, 0x5, 0x2f, 0xdd, 0xfe, 0x56, 0x2d, 0xfb, 0x3b, 0xa4, 0x9c, 0xf3, 0x1b, 0xdb, 0xd0, 0x2f, 0xd, 0xc5, 0x12, 0xc1}}
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return a, nil
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}
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@ -18,6 +18,8 @@
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// arbitrary data.
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package main
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//go:generate go-bindata -o ./bindata.go ./resources/4byte.json
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import (
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"bufio"
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"context"
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@ -1,138 +0,0 @@
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// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"bytes"
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"encoding/hex"
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"encoding/json"
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"flag"
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"strings"
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"github.com/ethereum/go-ethereum/crypto"
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)
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var (
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inDir = flag.String("i", "", "input directory to read")
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outFile = flag.String("o", "", "file to write to (overwrites if exists)")
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)
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func init() {
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flag.Usage = func() {
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fmt.Fprintln(os.Stderr, "Usage:", os.Args[0], "-i directory -o outputfile")
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flag.PrintDefaults()
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fmt.Fprintln(os.Stderr, `
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This is a little helper-utility to collect the data from
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https://github.com/ethereum-lists/4bytes and massage it into a
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clef-digestable format.
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It parses the signatures from the given directory, and writes
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them to the given outputfile as a json struct.
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Afterwards, you can do
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[cmd/clef]$ go-bindata resources
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To generatee the bindata.go asset file.
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`)
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}
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}
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func main() {
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flag.Parse()
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in := *inDir
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out := *outFile
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if in == "" {
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fmt.Fprintf(os.Stderr, "input directory not given\n")
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os.Exit(1)
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}
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if out == "" {
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fmt.Fprintf(os.Stderr, "output file not given\n")
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os.Exit(1)
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}
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data, err := readFiles(in)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error reading data: %v\n", err)
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os.Exit(1)
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}
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err = dumpData(data, out)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error writing data: %v\n", err)
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os.Exit(1)
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}
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}
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func dumpData(db map[string]string, outfile string) error {
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data, err := json.Marshal(db)
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if err != nil {
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return err
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}
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fmt.Printf("data size %d kB\n", len(data)/1000)
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return ioutil.WriteFile(outfile, data, 0644)
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}
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func readFiles(dir string) (map[string]string, error) {
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f, err := os.Open(dir)
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if err != nil {
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log.Fatal(err)
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}
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files, err := f.Readdir(-1)
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f.Close()
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if err != nil {
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return nil, err
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}
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db := make(map[string]string)
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for _, file := range files {
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// Only bother with signature files
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sig, err := hex.DecodeString(file.Name())
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if err != nil {
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continue
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}
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if len(sig) != 4 {
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fmt.Printf("Invalid sig, wrong length: %x", sig)
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}
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dat, err := ioutil.ReadFile(fmt.Sprintf("%s/%s", dir, file.Name()))
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if err != nil {
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fmt.Printf("err reading file: %v\n", err)
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continue
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}
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selectors := strings.Split(string(dat), ";")
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if len(selectors) > 1 {
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fmt.Printf("sig `%s`\n", sig)
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for _, selector := range selectors {
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fmt.Printf(" - %v\n", selector)
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}
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fmt.Println(" -- ignoring this signature\n")
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continue
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}
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selector := strings.TrimSpace(selectors[0])
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// We do a basic sanity check here, not fully verifying the correctness of
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// arguments, e.g the parameter types. We assume that the 4byte db comes
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// from a somewhat trusted source
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want := crypto.Keccak256([]byte(selector))[:4]
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if !bytes.Equal(sig, want) {
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fmt.Printf("Erroneous selector: %s, have %x want %x", selector, sig, want)
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continue
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}
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db[fmt.Sprintf("%x", sig)] = selector
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}
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return db, nil
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}
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