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AK+Everywhere: Remove the null state of DeprecatedString

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This commit removes DeprecatedString's "null" state, and replaces all
its users with one of the following:
- A normal, empty DeprecatedString
- Optional<DeprecatedString>

Note that null states of DeprecatedFlyString/StringView/etc are *not*
affected by this commit. However, DeprecatedString::empty() is now
considered equal to a null StringView.
This commit is contained in:
Ali Mohammad Pur 2023-10-10 15:00:58 +03:30 • committed by Ali Mohammad Pur
parent daf6d8173c
commit aeee98b3a1
189 changed files with 597 additions and 652 deletions
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24
Userland/Libraries/LibCore/Account.cpp
View file

@ -162,16 +162,17 @@ ErrorOr<Vector<Account>> Account::all([[maybe_unused]] Read options)
bool Account::authenticate(SecretString const& password) const
{
// If there was no shadow entry for this account, authentication always fails.
if (m_password_hash.is_null())
if (!m_password_hash.has_value())
return false;
// An empty passwd field indicates that no password is required to log in.
if (m_password_hash.is_empty())
if (m_password_hash->is_empty())
return true;
// FIXME: Use crypt_r if it can be built in lagom.
char* hash = crypt(password.characters(), m_password_hash.characters());
return hash != nullptr && AK::timing_safe_compare(hash, m_password_hash.characters(), m_password_hash.length());
auto const bytes = m_password_hash->characters();
char* hash = crypt(password.characters(), bytes);
return hash != nullptr && AK::timing_safe_compare(hash, bytes, m_password_hash->length());
}
ErrorOr<void> Account::login() const
@ -190,24 +191,25 @@ void Account::set_password(SecretString const& password)
void Account::set_password_enabled(bool enabled)
{
if (enabled && m_password_hash != "" && m_password_hash[0] == '!') {
m_password_hash = m_password_hash.substring(1, m_password_hash.length() - 1);
} else if (!enabled && (m_password_hash == "" || m_password_hash[0] != '!')) {
auto flattened_password_hash = m_password_hash.value_or(DeprecatedString::empty());
if (enabled && !flattened_password_hash.is_empty() && flattened_password_hash[0] == '!') {
m_password_hash = flattened_password_hash.substring(1, flattened_password_hash.length() - 1);
} else if (!enabled && (flattened_password_hash.is_empty() || flattened_password_hash[0] != '!')) {
StringBuilder builder;
builder.append('!');
builder.append(m_password_hash);
builder.append(flattened_password_hash);
m_password_hash = builder.to_deprecated_string();
}
}
void Account::delete_password()
{
m_password_hash = "";
m_password_hash = DeprecatedString::empty();
}
Account::Account(passwd const& pwd, spwd const& spwd, Vector<gid_t> extra_gids)
: m_username(pwd.pw_name)
, m_password_hash(spwd.sp_pwdp)
, m_password_hash(spwd.sp_pwdp ? Optional<DeprecatedString>(spwd.sp_pwdp) : OptionalNone {})
, m_uid(pwd.pw_uid)
, m_gid(pwd.pw_gid)
, m_gecos(pwd.pw_gecos)
@ -300,7 +302,7 @@ ErrorOr<DeprecatedString> Account::generate_shadow_file() const
if (p->sp_namp == m_username) {
if (m_deleted)
continue;
builder.appendff("{}:{}", m_username, m_password_hash);
builder.appendff("{}:{}", m_username, m_password_hash.value_or(DeprecatedString::empty()));
} else
builder.appendff("{}:{}", p->sp_namp, p->sp_pwdp);