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/*
SPDX-License-Identifier: GPL-2.0-or-later
SPDX-FileCopyrightText: 2000 Caldera Systems Inc.
SPDX-FileCopyrightText: 2020 Harald Sitter <sitter@kde.org>
SPDX-FileContributor: Matthew Peterson <mpeterson@caldera.com>
*/
#include "smbcontext.h"
#include <KConfig>
#include <KConfigGroup>
#include "smbauthenticator.h"
#include "smb-logsettings.h"
SMBContext::SMBContext(SMBAuthenticator *authenticator)
: m_context(smbc_new_context(), &freeContext)
, m_authenticator(authenticator)
{
Q_ASSERT(m_context);
if (!m_context) {
return;
}
authenticator->loadConfiguration();
qCDebug(KIO_SMB_LOG) << "auth_initialize_smbc";
KConfig cfg("kioslaverc", KConfig::SimpleConfig);
int debugLevel = cfg.group("SMB").readEntry("DebugLevel", 0);
qCDebug(KIO_SMB_LOG) << "Setting debug level to:" << debugLevel;
#ifdef DEPRECATED_SMBC_INTERFACE // defined by libsmbclient.h of Samba 3.2
smbc_setOptionUserData(m_context.get(), this);
smbc_setFunctionAuthDataWithContext(m_context.get(), auth_cb);
/* New libsmbclient interface of Samba 3.2 */
smbc_setDebug(m_context.get(), debugLevel);
/* Enable Kerberos support */
smbc_setOptionUseKerberos(m_context.get(), 1);
smbc_setOptionFallbackAfterKerberos(m_context.get(), 1);
#else
smbc_option_set(m_context.get(), "user_data", this);
m_context->callbacks.auth_fn = NULL;
smbc_option_set(m_context.get(), "auth_function", (void *)auth_cb);
m_context->debug = debug_level;
#if defined(SMB_CTX_FLAG_USE_KERBEROS) && defined(SMB_CTX_FLAG_FALLBACK_AFTER_KERBEROS)
m_context->flags |= SMB_CTX_FLAG_USE_KERBEROS | SMB_CTX_FLAG_FALLBACK_AFTER_KERBEROS;
#endif
#endif /* DEPRECATED_SMBC_INTERFACE */
if (!smbc_init_context(m_context.get())) {
m_context.reset();
return;
}
smbc_set_context(m_context.get());
// TODO: refactor; checkPassword should query this on
// demand to not run into situations where we may have cached
// the workgroup early on and it changed since. Needs context
// being held in the worker though, which opens us up to nullptr
// problems should checkPassword be called without init first.
authenticator->setDefaultWorkgroup(smbc_getWorkgroup(*this));
return;
}
bool SMBContext::isValid() const
{
return smbcctx() && authenticator();
}
void SMBContext::auth_cb(SMBCCTX *context, const char *server, const char *share, char *workgroup, int wgmaxlen, char *username, int unmaxlen, char *password, int pwmaxlen)
{
// Unfortunately because the callback API doesn't support callback specific user_data we need
// to route all auths through our context object otherwise the authenticator would have
// to twiddle the global context user_data and that seems much worse :|
if (context != nullptr) {
#ifdef DEPRECATED_SMBC_INTERFACE
auto *that = static_cast<SMBContext *>(smbc_getOptionUserData(context));
#else
auto *that = static_cast<SMBCContext *>(smbc_option_get(context, "user_data"));
#endif
that->m_authenticator->auth(server, share,
workgroup,wgmaxlen,
username, unmaxlen,
password, pwmaxlen);
}
}
void SMBContext::freeContext(SMBCCTX *ptr)
{
smbc_free_context(ptr, 1);
}
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