Merge pull request #3 from redpwn/go1.17

chore: upgrade to go1.17

Author: ginkoid

.github/workflows/ci.yml

@@ -10,8 +10,10 @@ jobs:
     steps:
       - uses: actions/setup-go@v2
         with:
-          go-version: 1.16.5
-      - run: |
+          go-version: 1.17.0
+      - uses: actions/checkout@v2
+      - name: go build
+        run: |
           sudo apt-get install -y gcc-aarch64-linux-gnu gcc-arm-linux-gnueabihf
           sudo dpkg --add-architecture arm64
           sudo dpkg --add-architecture armhf
@@ -21,9 +23,6 @@ jobs:
           ' | sudo tee /etc/apt/sources.list.d/arm.list
           sudo apt-get update || true
           sudo apt-get install libgmp-dev:arm64 libgmp-dev:armhf
-      - uses: actions/checkout@v2
-      - name: go build
-        run: |
           go build -v -ldflags '-w -s -extldflags -static' -o redpwnpow-linux-amd64 ./cmd/redpwnpow
           CC=aarch64-linux-gnu-gcc CGO_ENABLED=1 GOARCH=arm64 go build -v -ldflags '-w -s -extldflags -static' -o redpwnpow-linux-arm64 ./cmd/redpwnpow
           CC=arm-linux-gnueabihf-gcc CGO_ENABLED=1 GOARCH=arm go build -v -ldflags '-w -s -extldflags -static' -o redpwnpow-linux-armv6l ./cmd/redpwnpow
@@ -32,11 +31,11 @@ jobs:
           name: linux
           path: redpwnpow-linux-*
   darwin:
-    runs-on: macos-10.15
+    runs-on: macos-11
     steps:
       - uses: actions/setup-go@v2
         with:
-          go-version: 1.16.5
+          go-version: 1.17.0
       - uses: actions/checkout@v2
       - name: go build
         run: |
@@ -45,28 +44,29 @@ jobs:
           go build -v -ldflags "-w -s -extldflags -L$lib_tmp" -o redpwnpow-darwin-amd64 ./cmd/redpwnpow
           oci_tmp=$(mktemp -d)
           ghcr_token=$(curl -f 'https://ghcr.io/token?scope=repository:homebrew/core/gmp:pull' | jq -r .token)
-          curl -fLH "authorization: Bearer $ghcr_token" https://ghcr.io/v2/homebrew/core/gmp/blobs/sha256:ff4ad8d068ba4c14d146abb454991b6c4f246796ec2538593dc5f04ca7593eec | tar xzC "$oci_tmp" --strip-components=2
+          curl -fLH "authorization: Bearer $ghcr_token" https://ghcr.io/v2/homebrew/core/gmp/blobs/sha256:ff4ad8d068ba4c14d146abb454991b6c4f246796ec2538593dc5f04ca7593eec | tar xzC "$oci_tmp" --strip-components 2
           lib_tmp=$(mktemp -d)
           cp "$oci_tmp/lib/libgmp.a" "$lib_tmp"
-          export SDK_NAME=macosx
-          export SDK_PATH=$(xcrun --show-sdk-path --sdk $SDK_NAME)
-          export CC="$(xcrun -sdk $SDK_PATH --find clang) -arch arm64 -isysroot $SDK_PATH"
-          export CFLAGS="-isysroot $SDK_PATH -arch arm64 -I$SDK_PATH/usr/include"
-          export LD_LIBRARY_PATH="$SDK_PATH/usr/lib"
-          export CGO_LDFLAGS="-isysroot $SDK_PATH -arch arm64 -L$lib_tmp"
-          export CGO_CFLAGS="-isysroot $SDK_PATH -arch arm64 -I/usr/local/include"
-          CGO_ENABLED=1 GOARCH=arm64 go build -v -ldflags '-w -s' -o redpwnpow-darwin-arm64 ./cmd/redpwnpow
+          sdk_path="$(xcrun --show-sdk-path --sdk macosx)"
+          CGO_ENABLED=1 GOARCH=arm64 CC="$(xcrun -sdk $sdk_path --find clang) -arch arm64 -isysroot $sdk_path" \
+            CFLAGS="-isysroot $sdk_path -arch arm64 -I$sdk_path/usr/include" LD_LIBRARY_PATH="$sdk_path/usr/lib" \
+            CGO_LDFLAGS="-isysroot $sdk_path -arch arm64 -L$lib_tmp" CGO_CFLAGS="-isysroot $sdk_path -arch arm64 -I/usr/local/include" \
+            go build -v -ldflags '-w -s' -o redpwnpow-darwin-arm64 ./cmd/redpwnpow
           lipo -create -output redpwnpow-darwin redpwnpow-darwin-amd64 redpwnpow-darwin-arm64
       - uses: actions/upload-artifact@v2
         with:
           name: darwin
           path: redpwnpow-darwin
   windows:
-    runs-on: windows-2019
+    runs-on: windows-2022
     steps:
+      - uses: actions/setup-go@v2
+        with:
+          go-version: 1.17.0
       - uses: msys2/setup-msys2@v2
         with:
-          install: mingw-w64-x86_64-go mingw-w64-x86_64-gcc mingw-w64-x86_64-gmp
+          path-type: inherit
+          install: mingw-w64-x86_64-gcc mingw-w64-x86_64-gmp
       - uses: actions/checkout@v2
       - name: go build
         shell: msys2 {0}
@@ -90,8 +90,6 @@ jobs:
       - uses: softprops/action-gh-release@v1
         with:
           files: build/*/redpwnpow-*
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: cloudflare
         run: >
           curl -sSXPUT https://api.cloudflare.com/client/v4/accounts/${{ secrets.CLOUDFLARE_ACCOUNT }}/workers/scripts/pow

README.md

@@ -20,7 +20,6 @@ redpwnpow challenge
 ## kCTF
 
 redpwnpow can be used as a drop-in replacement for [kCTF](https://google.github.io/kctf/)'s proof of work solver.
-redpwnpow is approximately **10x faster** than kCTF's [Python solver](https://github.com/google/kctf/blob/v1.0/docker-images/challenge/pow.py).
 
 ## Go module
 
@@ -43,10 +42,10 @@ func main() {
 	c := pow.GenerateChallenge(5000)
 	fmt.Printf("proof of work: curl -sSfL https://pwn.red/pow | sh -s %s\nsolution: ", c)
 	s, _ := bufio.NewReader(os.Stdin).ReadString('\n')
-	if correct, err := c.Check(s); err == nil && correct {
-		fmt.Println("correct")
+	if good, err := c.Check(s); err == nil && good {
+		fmt.Println("good")
 	} else {
-		fmt.Println("incorrect")
+		fmt.Println("bad")
 	}
 }
 ```

cmd/redpwnpow/redpwnpow.go

@@ -22,7 +22,7 @@ func run() error {
 
 func main() {
 	if err := run(); err != nil {
-		fmt.Fprintln(os.Stderr, err)
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
 		os.Exit(1)
 	}
 }

cmd/redpwnpow/run.sh

@@ -1,8 +1,8 @@
 #!/bin/sh
 # redpwnpow proof of work runner
-# https://github.com/redpwn/pow/blob/master/cmd/redpwnpow/run.sh
+# https://github.com/redpwn/pow
 
-set -e
+set -eu
 version=VERSION
 run() {
   case $(uname | tr '[:upper:]' '[:lower:]') in
@@ -17,10 +17,13 @@ run() {
     msys*|mingw*|cygwin*) release=windows-amd64.exe;;
     *) echo unknown operating system >&2; exit 1
   esac
-  cache_root=$HOME/.cache/redpwnpow
+  cache_root=${XDG_CACHE_HOME:-$HOME/.cache}/redpwnpow
   mkdir -p "$cache_root"
   cache_path=$cache_root/redpwnpow-$version-$release
-  [ -e "$cache_path" ] || curl -sSfLo "$cache_path" "https://github.com/redpwn/pow/releases/download/$version/redpwnpow-$release" && chmod u+x "$cache_path"
+  if [ ! -e "$cache_path" ]; then
+    curl -sSfLo "$cache_path" "https://github.com/redpwn/pow/releases/download/$version/redpwnpow-$release"
+    chmod u+x "$cache_path"
+  fi
   "$cache_path" "$@"
 }
 run "$@"

go.mod

@@ -1,5 +1,5 @@
 module github.com/redpwn/pow
 
-go 1.16
+go 1.17
 
 require github.com/ncw/gmp v1.0.4