From 5b4d071daa4ea9d3a3742f568974dd56d81b4cf2 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Tue, 4 Jun 2024 08:03:46 +0200
Subject: [PATCH] Everywhere: Remove LibCrypt

This was totally unused.
---
 Userland/Libraries/LibCrypt/CMakeLists.txt | 16 -----
 Userland/Libraries/LibCrypt/crypt.cpp      | 70 ----------------------
 Userland/Libraries/LibCrypt/crypt.h        | 28 ---------
 3 files changed, 114 deletions(-)
 delete mode 100644 Userland/Libraries/LibCrypt/CMakeLists.txt
 delete mode 100644 Userland/Libraries/LibCrypt/crypt.cpp
 delete mode 100644 Userland/Libraries/LibCrypt/crypt.h

diff --git a/Userland/Libraries/LibCrypt/CMakeLists.txt b/Userland/Libraries/LibCrypt/CMakeLists.txt
deleted file mode 100644
index 46101c37f6c..00000000000
--- a/Userland/Libraries/LibCrypt/CMakeLists.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-
-# HACK ALERT!
-# To avoid a circular dependency chain with LibCrypt --> LibCrypto --> LibCore --> LibCrypt
-# We include the SHA2 implementation from LibCrypto here manually
-add_library(LibCryptSHA2 OBJECT ../LibCrypto/Hash/SHA2.cpp)
-add_dependencies(LibCryptSHA2 install_libc_headers)
-set_target_properties(LibCryptSHA2 PROPERTIES CXX_VISIBILITY_PRESET hidden)
-set_target_properties(LibCryptSHA2 PROPERTIES VISIBILITY_INLINES_HIDDEN ON)
-
-set(SOURCES
-    crypt.cpp
-)
-
-serenity_lib(LibCrypt crypt)
-serenity_install_headers("")
-target_link_libraries(LibCrypt PRIVATE LibCryptSHA2)
diff --git a/Userland/Libraries/LibCrypt/crypt.cpp b/Userland/Libraries/LibCrypt/crypt.cpp
deleted file mode 100644
index 7d6a4f09c9c..00000000000
--- a/Userland/Libraries/LibCrypt/crypt.cpp
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2020, Peter Elliott <pelliott@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#include <AK/Base64.h>
-#include <AK/Types.h>
-#include <LibCrypto/Hash/SHA2.h>
-#include <crypt.h>
-#include <errno.h>
-#include <string.h>
-
-extern "C" {
-
-static struct crypt_data crypt_data;
-
-char* crypt(char const* key, char const* salt)
-{
-    crypt_data.initialized = true;
-    return crypt_r(key, salt, &crypt_data);
-}
-
-static constexpr size_t crypt_salt_max = 16;
-
-char* crypt_r(char const* key, char const* salt, struct crypt_data* data)
-{
-    if (!data->initialized) {
-        errno = EINVAL;
-        return nullptr;
-    }
-
-    // We only support SHA-256 at the moment
-    if (salt[0] != '$' || salt[1] != '5') {
-        errno = EINVAL;
-        return nullptr;
-    }
-
-    char const* salt_value = salt + 3;
-    size_t salt_len = min(strcspn(salt_value, "$"), crypt_salt_max);
-    size_t header_len = salt_len + 3;
-
-    bool fits = ByteString(salt, header_len).copy_characters_to_buffer(data->result, sizeof(data->result));
-    if (!fits) {
-        errno = EINVAL;
-        return nullptr;
-    }
-    data->result[header_len] = '$';
-
-    Crypto::Hash::SHA256 sha;
-    sha.update(StringView { key, strlen(key) });
-    sha.update(reinterpret_cast<u8 const*>(salt_value), salt_len);
-
-    auto digest = sha.digest();
-    auto string_or_error = encode_base64({ digest.immutable_data(), digest.data_length() });
-    if (string_or_error.is_error()) {
-        errno = ENOMEM;
-        return nullptr;
-    }
-
-    auto string = string_or_error.value().bytes_as_string_view();
-    fits = string.copy_characters_to_buffer(data->result + header_len + 1, sizeof(data->result) - header_len - 1);
-    if (!fits) {
-        errno = EINVAL;
-        return nullptr;
-    }
-
-    return data->result;
-}
-}
diff --git a/Userland/Libraries/LibCrypt/crypt.h b/Userland/Libraries/LibCrypt/crypt.h
deleted file mode 100644
index 0a304ac0475..00000000000
--- a/Userland/Libraries/LibCrypt/crypt.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-/* standard symbolic constants and types
- *
- * values from POSIX standard unix specification
- *
- * https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/unistd.h.html
- */
-
-#pragma once
-
-#include <sys/cdefs.h>
-
-__BEGIN_DECLS
-
-struct crypt_data {
-    int initialized;
-    char result[65];
-};
-
-char* crypt(char const* key, char const* salt);
-char* crypt_r(char const* key, char const* salt, struct crypt_data* data);
-
-__END_DECLS