mirror of
https://github.com/sequentialread/pow-captcha.git
synced 2025-11-23 22:15:47 +00:00
113 lines
3.3 KiB
Bash
Executable File
113 lines
3.3 KiB
Bash
Executable File
#!/bin/bash -e
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if [ ! -f build_wasm.sh ]; then
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printf "Please run this script from the wasm_build folder.\n"
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fi
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if [ ! -d scrypt-wasm ]; then
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printf "Cloning https://github.com/MyEtherWallet/scrypt-wasm... \n"
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git clone https://github.com/MyEtherWallet/scrypt-wasm
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fi
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cd scrypt-wasm
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rust_is_installed="$(which rustc | wc -l)"
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if [ "$rust_is_installed" == "0" ]; then
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printf "rust language compilers & tools will need to be installed."
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printf "using rustup.rs: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh \n"
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read -p "is this ok? [y] " -n 1 -r
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printf "\n"
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if [[ $REPLY =~ ^[Yy]$ ]]
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then
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curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
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else
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printf "exiting due to no rust compiler"
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exit 1
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fi
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fi
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if [ ! -d pkg ]; then
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printf "running Makefile for MyEtherWallet/scrypt-wasm... \n"
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rustup target add wasm32-unknown-unknown
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cargo install wasm-pack --force
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wasm-pack build --target no-modules
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fi
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cd ../
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cp scrypt-wasm/pkg/scrypt_wasm_bg.wasm ../static/scrypt.wasm
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echo '
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// THIS FILE IS GENERATED AUTOMATICALLY
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// Dont edit this file by hand.
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// Either edit proofOfWorkerStub.js or edit the build script located in the wasm_build folder.
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' > ../static/proofOfWorker.js
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cat ../proofOfWorkerStub.js | tail -n +6 >> ../static/proofOfWorker.js
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# wasm was defined at the top of proofOfWorker.js, so don't define it again.
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cat scrypt-wasm/pkg/scrypt_wasm.js | grep -v 'let wasm = ' >> ../static/proofOfWorker.js
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# see: https://rustwasm.github.io/docs/wasm-bindgen/examples/without-a-bundler.html
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echo '
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scrypt = wasm_bindgen.scrypt;
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scryptPromise = wasm_bindgen({module_or_path: "/static/scrypt.wasm"});
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' >> ../static/proofOfWorker.js
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## -----------------------------------------------------------
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## The proofOfWorker_CrossOrigin.js version embeds the WebAssembly binary into the WebWorker script,
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## This is neccesary when the pow-bot-deterrent static assets can't be hosted on the same origin
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## However, it also means that the site can't use a content-security-policy which restricts external javascript
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echo '
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// THIS FILE IS GENERATED AUTOMATICALLY
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// Dont edit this file by hand.
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// Either edit proofOfWorkerStub.js or edit the build script located in the wasm_build folder.
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' > ../static/proofOfWorker_CrossOrigin.js
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cat ../proofOfWorkerStub.js | tail -n +6 >> ../static/proofOfWorker_CrossOrigin.js
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# wasm was defined at the top of proofOfWorker.js, so don't define it again.
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cat scrypt-wasm/pkg/scrypt_wasm.js | grep -v 'let wasm = ' >> ../static/proofOfWorker_CrossOrigin.js
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# see: https://rustwasm.github.io/docs/wasm-bindgen/examples/without-a-bundler.html
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echo '
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// https://caniuse.com/mdn-javascript_builtins_uint8array_frombase64 its at 60% in oct 2025
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if (!Uint8Array.fromBase64) {
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Uint8Array.fromBase64 = function(base64String) {
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const binaryString = atob(base64String);
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const toReturn = new Uint8Array(binaryString.length);
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for (let i = 0; i < binaryString.length; i++) {
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toReturn[i] = binaryString.charCodeAt(i);
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}
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return toReturn;
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};
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}
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const base64WASM = "'"$(cat ../static/scrypt.wasm | base64 -w 0)"'";
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const wasmBinary = Uint8Array.fromBase64(base64WASM);
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scrypt = wasm_bindgen.scrypt;
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scryptPromise = wasm_bindgen({module_or_path: wasmBinary});
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' >> ../static/proofOfWorker_CrossOrigin.js
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