commit d469b667c768b6a98fd3e333ec548480db0b1a5f Author: Knut Ahlers Date: Mon Sep 17 16:41:02 2018 +0200 Initial test Signed-off-by: Knut Ahlers diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..cf791a3 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +main.wasm* +wasm_exec.js diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..35fce71 --- /dev/null +++ b/Makefile @@ -0,0 +1,8 @@ +default: build wasm_exec.js + +build: + GOOS=js GOARCH=wasm go build -o main.wasm main.go + gzip -c main.wasm > main.wasm.gz + +wasm_exec.js: + curl -sSfLo wasm_exec.js "https://raw.githubusercontent.com/golang/go/go1.11/misc/wasm/wasm_exec.js" diff --git a/README.md b/README.md new file mode 100644 index 0000000..9b0374f --- /dev/null +++ b/README.md @@ -0,0 +1,19 @@ +# go-openssl Wrapper for WASM support + +```console +$ make +GOOS=js GOARCH=wasm go build -o main.wasm main.go +gzip -c main.wasm > main.wasm.gz +curl -sSfLo wasm_exec.js "https://raw.githubusercontent.com/golang/go/go1.11/misc/wasm/wasm_exec.js" + +$ ls -lh main.wasm* +-rwxr-xr-x 1 luzifer luzifer 2.8M Sep 17 16:43 main.wasm +-rw-r--r-- 1 luzifer luzifer 611K Sep 17 16:43 main.wasm.gz +``` + +Chrome dev console output: + +``` +(index):14 (2) ["encryptResponse", "U2FsdGVkX1/baq9kUCX1EmUY/XZfnz7CwqGr70vqo6g="] +(index):10 (2) ["decryptResponse", "Knut"] +``` diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..eb0d33f --- /dev/null +++ b/go.mod @@ -0,0 +1,3 @@ +module test + +require github.com/Luzifer/go-openssl v2.0.0+incompatible diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..30e01b6 --- /dev/null +++ b/go.sum @@ -0,0 +1,2 @@ +github.com/Luzifer/go-openssl v2.0.0+incompatible h1:EpNNxrPDji4rRzE0KeOeIeV7pHyKe8zF9oNnAXy4mBY= +github.com/Luzifer/go-openssl v2.0.0+incompatible/go.mod h1:t2qnLjT8WQ3usGU1R8uAqjY4T7CK7eMg9vhQ3l9Ue/Y= diff --git a/index.html b/index.html new file mode 100644 index 0000000..5e7ff39 --- /dev/null +++ b/index.html @@ -0,0 +1,10 @@ + + + + + + + + + + diff --git a/index.js b/index.js new file mode 100644 index 0000000..b11b622 --- /dev/null +++ b/index.js @@ -0,0 +1,15 @@ +function decryptResponse(plaintext) { + console.log(["decryptResponse", plaintext]) +} + +function encryptResponse(ciphertext) { + console.log(["encryptResponse", ciphertext]) + decrypt(ciphertext, "password", decryptResponse) +} + +function wasmStartSuccess() { + encrypt("Knut", "password", encryptResponse) +} + +const go = new Go() +WebAssembly.instantiateStreaming(fetch("main.wasm"), go.importObject).then(async obj => await go.run(obj.instance)) diff --git a/main.go b/main.go new file mode 100644 index 0000000..c2eab4e --- /dev/null +++ b/main.go @@ -0,0 +1,61 @@ +package main + +import ( + "fmt" + "syscall/js" + + openssl "github.com/Luzifer/go-openssl" +) + +func main() { + js.Global().Set("decrypt", js.NewCallback(decrypt)) + js.Global().Set("encrypt", js.NewCallback(encrypt)) + + // Trigger custom "event" + js.Global().Call("wasmStartSuccess") + <-make(chan struct{}, 0) +} + +func decrypt(i []js.Value) { + if len(i) != 3 { + println("decrypt requires 3 arguments") + return + } + + var ( + ciphertext = i[0].String() + password = i[1].String() + callback = i[2] + ) + + o := openssl.New() + plaintext, err := o.DecryptString(password, ciphertext) + if err != nil { + println(fmt.Sprintf("decrypt failed: %s", err)) + return + } + + callback.Invoke(string(plaintext)) +} + +func encrypt(i []js.Value) { + if len(i) != 3 { + println("encrypt requires 3 arguments") + return + } + + var ( + plaintext = i[0].String() + password = i[1].String() + callback = i[2] + ) + + o := openssl.New() + ciphertext, err := o.EncryptString(password, plaintext) + if err != nil { + println(fmt.Sprintf("encrypt failed: %s", err)) + return + } + + callback.Invoke(string(ciphertext)) +}