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This builds a libssl.so.3, with a correct soname and a handful of basic functions that are correctly versioned: ``` $ readelf -d target/debug/libssl.so.3 | grep SONAME 0x000000000000000e (SONAME) Library soname: [libssl.so.3] $ readelf -Wa --dyn-syms target/debug/libssl.so.3 | grep @@ 62: 00000000000e8600 0 FUNC GLOBAL DEFAULT 16 TLS_server_method@@OPENSSL_3.0.0 65: 00000000000e8540 0 FUNC GLOBAL DEFAULT 16 TLS_method@@OPENSSL_3.0.0 66: 00000000000e8960 0 FUNC GLOBAL DEFAULT 16 SSL_CTX_free@@OPENSSL_3.0.0 67: 00000000000e8a30 0 FUNC GLOBAL DEFAULT 16 SSL_new@@OPENSSL_3.0.0 69: 00000000000e86c0 0 FUNC GLOBAL DEFAULT 16 TLS_client_method@@OPENSSL_3.0.0 70: 00000000000e8c10 0 FUNC GLOBAL DEFAULT 16 SSL_free@@OPENSSL_3.0.0 73: 00000000000e8780 0 FUNC GLOBAL DEFAULT 16 SSL_CTX_new@@OPENSSL_3.0.0 74: 00000000000e8870 0 FUNC GLOBAL DEFAULT 16 SSL_CTX_up_ref@@OPENSSL_3.0.0 78: 00000000000e8b20 0 FUNC GLOBAL DEFAULT 16 SSL_up_ref@@OPENSSL_3.0.0 79: 00000000000e8450 0 FUNC GLOBAL DEFAULT 16 OPENSSL_init_ssl@@OPENSSL_3.0.0 ``` See `build.rs` for how this works roughly, including the requirement for lld. There are a handful of tests, and these work under miri.
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‎.github/dependabot.yml

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version: 2
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updates:
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- package-ecosystem: cargo
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directory: "/"
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schedule:
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interval: daily
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open-pull-requests-limit: 10
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- package-ecosystem: github-actions
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directory: "/"
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schedule:
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interval: weekly

‎.github/workflows/libssl.yaml

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name: rustls-libssl
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permissions:
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contents: read
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on:
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push:
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pull_request:
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merge_group:
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schedule:
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- cron: '15 12 * * 3'
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defaults:
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run:
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working-directory: rustls-libssl
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jobs:
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build:
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name: Build+test
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runs-on: ${{ matrix.os }}
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strategy:
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matrix:
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rust:
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- stable
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- beta
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- nightly
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os: [ubuntu-latest]
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steps:
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- name: Checkout sources
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uses: actions/checkout@v4
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with:
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persist-credentials: false
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- name: Install build dependencies
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run: sudo apt-get update && sudo apt-get install -y openssl libssl3 libssl-dev lld
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- name: Install ${{ matrix.rust }} toolchain
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uses: dtolnay/rust-toolchain@master
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with:
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toolchain: ${{ matrix.rust }}
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- run: make PROFILE=release test
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valgrind:
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name: Valgrind
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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with:
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persist-credentials: false
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- name: Install valgrind
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run: sudo apt-get update && sudo apt-get install -y valgrind
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- name: Install build dependencies
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run: sudo apt-get update && sudo apt-get install -y openssl libssl3 libssl-dev lld
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- run: export VALGRIND="valgrind -q"
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- run: make test
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docs:
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name: Check for documentation errors
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runs-on: ubuntu-latest
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steps:
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- name: Checkout sources
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uses: actions/checkout@v4
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with:
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persist-credentials: false
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- name: Install build dependencies
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run: sudo apt-get update && sudo apt-get install -y openssl libssl3 libssl-dev lld
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- name: Install rust toolchain
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uses: dtolnay/rust-toolchain@nightly
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- name: cargo doc (all features)
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run: cargo doc --all-features --no-deps --workspace
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env:
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RUSTDOCFLAGS: -Dwarnings
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format:
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name: Format
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runs-on: ubuntu-latest
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steps:
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- name: Checkout sources
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uses: actions/checkout@v4
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with:
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persist-credentials: false
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- name: Install rust toolchain
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uses: dtolnay/rust-toolchain@master
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with:
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toolchain: 1.67.1
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components: rustfmt
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- name: Check Rust formatting
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run: cargo fmt --all -- --check
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- name: Check src/entry.rs formatting
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run: ./admin/format --all -- --check
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- name: Check C formatting
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run: make format-check
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clippy:
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name: Clippy
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runs-on: ubuntu-latest
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steps:
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- name: Checkout sources
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uses: actions/checkout@v4
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with:
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persist-credentials: false
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- name: Install rust toolchain
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uses: dtolnay/rust-toolchain@stable
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with:
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components: clippy
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- name: Check clippy
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# We allow unknown lints here because sometimes the nightly job
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# (below) will have a new lint that we want to suppress.
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# If we suppress (e.g. #![allow(clippy::arc_with_non_send_sync)]),
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# we would get an unknown-lint error from older clippy versions.
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run: cargo clippy --locked --workspace -- -D warnings -A unknown-lints
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clippy-nightly-optional:
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name: Clippy nightly (optional)
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runs-on: ubuntu-latest
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steps:
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- name: Checkout sources
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uses: actions/checkout@v4
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with:
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persist-credentials: false
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- name: Install rust toolchain
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uses: dtolnay/rust-toolchain@nightly
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with:
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components: clippy
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- name: Check clippy
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run: cargo clippy --locked --workspace -- -D warnings
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clang-tidy:
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name: Clang Tidy
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runs-on: ubuntu-latest
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steps:
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- name: Checkout sources
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uses: actions/checkout@v4
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with:
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persist-credentials: false
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- name: Clang tidy
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run: clang-tidy tests/*.c -- -I src/
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miri:
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name: Miri
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runs-on: ubuntu-latest
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steps:
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- name: Checkout sources
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uses: actions/checkout@v4
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with:
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persist-credentials: false
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- name: Install nightly Rust
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uses: dtolnay/rust-toolchain@nightly
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- run: rustup override set "nightly-$(curl -s https://rust-lang.github.io/rustup-components-history/x86_64-unknown-linux-gnu/miri)"
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- run: rustup component add miri
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- run: cargo miri test

‎README.md

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# rustls-openssl-compat
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This is the planned home of several rustls ↔️ OpenSSL compatibility layers.
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Currently here:
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- **rustls-libssl**: an implementation of the OpenSSL libssl ABI in terms of rustls.
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Not yet here:
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- **rustls-libcrypto**: an implementation of rustls `CryptoProvider` in terms of OpenSSL's libcrypto.

‎rustls-libssl/.gitignore

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target/

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