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Go's internal/cpu never detects ARM64 features on GOOS=ios, so AES, AES-GCM and SHA-256 use their generic implementations on iOS and tvOS. Patch the Go source in the Apple library build to assert the ARMv8.0 cryptographic extensions, as Go already does for macOS. See https://github.com/SagerNet/sing-box/issues/4486
35 lines
1002 B
Bash
Executable File
35 lines
1002 B
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# Go's internal/cpu never detects ARM64 features on GOOS=ios, so crypto/aes,
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# AES-GCM and crypto/sha256 use their generic implementations on iOS and tvOS.
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# See https://github.com/SagerNet/sing-box/issues/4486
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#
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# Only the ARMv8.0 cryptographic extensions are asserted; ARMv8.1 atomics and
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# SHA-512 are absent on the A8/A9 devices still supported by the deployment targets.
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#
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# Remove once the Go release used by the Apple library build includes the fix.
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export GOTOOLCHAIN=local
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GOROOT="$(go env GOROOT)"
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PATCH_FILE="$(cd "$(dirname "$0")" && pwd)/go_ios_cpu_features.patch"
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cd "$GOROOT"
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if [[ -f src/internal/cpu/cpu_arm64_ios.go ]]; then
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echo "already patched"
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else
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patch --verbose -p1 < "$PATCH_FILE"
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fi
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CPU_FILES="$(GOOS=ios GOARCH=arm64 CGO_ENABLED=0 go list -f '{{.GoFiles}}' internal/cpu)"
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echo "internal/cpu files for ios/arm64: $CPU_FILES"
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case "$CPU_FILES" in
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*cpu_arm64_ios.go*) ;;
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*)
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echo "patch is not effective" >&2
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exit 1
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;;
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esac
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