wasm: add webassembly code for creating access grant in console web UI
Change-Id: I3c6d9afc660f3d959d6138db84341e9460b877a1
This commit is contained in:
jessicagreben
Jessica Grebenschikov
parent
2dffaebc6f
commit
c4c29e370a
4
go.mod
4
go.mod
@ -42,9 +42,9 @@ require (
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golang.org/x/sys v0.0.0-20200929083018-4d22bbb62b3c
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golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e
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google.golang.org/api v0.20.0 // indirect
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storj.io/common v0.0.0-20201030120157-90ae6720d87e
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storj.io/common v0.0.0-20201030140758-31112c1cc750
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storj.io/drpc v0.0.14
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storj.io/monkit-jaeger v0.0.0-20200518165323-80778fc3f91b
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storj.io/private v0.0.0-20201026143115-bc926bfa3bca
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storj.io/uplink v1.3.2-0.20201028181609-f6efc8fcf771
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storj.io/uplink v1.3.2-0.20201104145754-2f6dfd29a96c
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)
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9
go.sum
9
go.sum
@ -761,9 +761,8 @@ honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt
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rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
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storj.io/common v0.0.0-20200424175742-65ac59022f4f/go.mod h1:pZyXiIE7bGETIRXtfs0nICqMwp7PM8HqnDuyUeldNA0=
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storj.io/common v0.0.0-20201026135900-1aaeec90670b/go.mod h1:GqdmNf3fLm2UZX/7Zr0BLFCJ4gFjgm6eHrk/fnmr5jQ=
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storj.io/common v0.0.0-20201027143432-3718579e12bf/go.mod h1:9iobNl9eI6C2M23FS/b37yFYOdHpoeJ8BFFcxsmv538=
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storj.io/common v0.0.0-20201030120157-90ae6720d87e h1:6baDicBbR0/2XgcQ068KN+B4dF6akkdh2vemmXka1ns=
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storj.io/common v0.0.0-20201030120157-90ae6720d87e/go.mod h1:9iobNl9eI6C2M23FS/b37yFYOdHpoeJ8BFFcxsmv538=
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storj.io/common v0.0.0-20201030140758-31112c1cc750 h1:hgIjnLbkcMjYntYVPDPgFd4vkmNc3GEYL+IiB2jOfzs=
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storj.io/common v0.0.0-20201030140758-31112c1cc750/go.mod h1:9iobNl9eI6C2M23FS/b37yFYOdHpoeJ8BFFcxsmv538=
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storj.io/drpc v0.0.11/go.mod h1:TiFc2obNjL9/3isMW1Rpxjy8V9uE0B2HMeMFGiiI7Iw=
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storj.io/drpc v0.0.11/go.mod h1:TiFc2obNjL9/3isMW1Rpxjy8V9uE0B2HMeMFGiiI7Iw=
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storj.io/drpc v0.0.14 h1:GCBdymTt1BRw4oHmmUZZlxYXLVRxxYj6x3Ivide2J+I=
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@ -772,5 +771,5 @@ storj.io/monkit-jaeger v0.0.0-20200518165323-80778fc3f91b h1:Bbg9JCtY6l3HrDxs3BX
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storj.io/monkit-jaeger v0.0.0-20200518165323-80778fc3f91b/go.mod h1:gj4vuCeyCRjRmH8LIrgoyU9Dc9uR6H+/GcDUXmTbf80=
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storj.io/private v0.0.0-20201026143115-bc926bfa3bca h1:ekR7vtUYC5+cDyim0ZJaSZeXidyzQqDYsnFPYXgTozc=
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storj.io/private v0.0.0-20201026143115-bc926bfa3bca/go.mod h1:EaLnIyNyqWQUJB+7+KWVez0In9czl0nHHlm2WobebuA=
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storj.io/uplink v1.3.2-0.20201028181609-f6efc8fcf771 h1:jPbw74xt8bvv8nOfBaM4g9Ts4moX8mqfD4N/B8vEJrA=
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storj.io/uplink v1.3.2-0.20201028181609-f6efc8fcf771/go.mod h1:5do8jvbs4ao4tLdIZKzNFJPVKOH1oDfvVf8OIsR5Z9E=
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storj.io/uplink v1.3.2-0.20201104145754-2f6dfd29a96c h1:m0y0PtruZFgzU7+yQd4zCR5T4adQGjVcluPNbFiYF9Y=
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storj.io/uplink v1.3.2-0.20201104145754-2f6dfd29a96c/go.mod h1:1J04kNl9rZ2x+mLg2nCZaTHHi0CYQjjqOpDKQYGGOLg=
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35
satellite/console/wasm/README.md
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35
satellite/console/wasm/README.md
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@ -0,0 +1,35 @@
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# Using WebAssembly in Storj
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In order to use the uplink library from the browser, we can compile the uplink library to WebAssembly (wasm).
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### Setup
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To generate wasm code that can create access grants in the web browser, run the following from the storj/wasm directory:
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```
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$ GOOS=js GOARCH=wasm go build -o access.wasm access.go
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```
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The `access.wasm` code can then be loaded into the browser in a script tag in an html page. Also needed is a JavaScript support file which ships with golang.
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To copy the JavaScript support file, run:
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```
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$ cp "$(go env GOROOT)/misc/wasm/wasm_exec.js" .
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```
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Ref: [Golang WebAssembly docs](https://github.com/golang/go/wiki/WebAssembly)
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The HTML file should include the following:
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```
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<script type="text/javascript" src="/path/to/wasm_exec.js"></script>
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<script>
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const go = new Go();
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WebAssembly.instantiateStreaming(
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fetch("/path/to/access.wasm"), go.importObject).then(
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(result) => {
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go.run(result.instance);
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});
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</script>
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```
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Additionally, the HTTP `Content-Security-Policy (CSP) script-src` directive will need to be modified to allow wasm code to be executed.
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See: [WebAssembly Content Security Policy docs](https://github.com/WebAssembly/content-security-policy/blob/master/proposals/CSP.md)
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64
satellite/console/wasm/access.go
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64
satellite/console/wasm/access.go
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@ -0,0 +1,64 @@
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// +build js,wasm
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// Copyright (C) 2020 Storj Labs, Inc.
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// See LICENSE for copying information.
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package main
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import (
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"fmt"
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"syscall/js"
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"storj.io/common/encryption"
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"storj.io/common/macaroon"
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"storj.io/common/storj"
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"storj.io/uplink/private/access2"
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)
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func main() {
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js.Global().Set("generateAccessGrant", generateAccessGrant())
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<-make(chan bool)
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}
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func generateAccessGrant() js.Func {
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return js.FuncOf(func(this js.Value, args []js.Value) interface{} {
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if len(args) < 4 {
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return fmt.Sprintf("Error not enough arguments. Need 4, but only %d supplied. The order of arguments are: satellite Node URL, API key, encryption passphrase, and project salt.", len(args))
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}
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satelliteNodeURL := args[0].String()
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apiKey := args[1].String()
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encryptionPassphrase := args[2].String()
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projectSalt := args[3].String()
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return genAccessGrant(satelliteNodeURL,
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apiKey,
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encryptionPassphrase,
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projectSalt,
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)
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})
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}
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func genAccessGrant(satelliteNodeURL, apiKey, encryptionPassphrase, projectSalt string) string {
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parsedAPIKey, err := macaroon.ParseAPIKey(apiKey)
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if err != nil {
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return err.Error()
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}
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const concurrency = 8
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key, err := encryption.DeriveRootKey([]byte(encryptionPassphrase), []byte(projectSalt), "", concurrency)
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if err != nil {
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return err.Error()
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}
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encAccess := access2.NewEncryptionAccessWithDefaultKey(key)
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encAccess.SetDefaultPathCipher(storj.EncAESGCM)
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a := &access2.Access{
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SatelliteAddress: satelliteNodeURL,
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APIKey: parsedAPIKey,
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EncAccess: encAccess,
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}
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accessString, err := a.Serialize()
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if err != nil {
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return err.Error()
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}
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return accessString
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}
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