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/*
* macos_keychain.c: Mac OS keychain providers for SVN_AUTH_*
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*/
/* ==================================================================== */
/*** Includes. ***/
#include <apr_pools.h>
#include "svn_auth.h"
#include "svn_error.h"
#include "svn_utf.h"
#include "svn_config.h"
#include "svn_user.h"
#include "auth.h"
#include "private/svn_auth_private.h"
#include "svn_private_config.h"
#ifdef SVN_HAVE_KEYCHAIN_SERVICES
#include <Security/Security.h>
/*-----------------------------------------------------------------------*/
/* keychain simple provider, puts passwords in the KeyChain */
/*-----------------------------------------------------------------------*/
/*
* XXX (2005-12-07): If no GUI is available (e.g. over a SSH session),
* you won't be prompted for credentials with which to unlock your
* keychain. Apple recognizes lack of TTY prompting as a known
* problem.
*
*
* XXX (2005-12-07): SecKeychainSetUserInteractionAllowed(FALSE) does
* not appear to actually prevent all user interaction. Specifically,
* if the executable changes (for example, if it is rebuilt), the
* system prompts the user to okay the use of the new executable.
*
* Worse than that, the interactivity setting is global per app (not
* process/thread), meaning that there is a race condition in the
* implementation below between calls to
* SecKeychainSetUserInteractionAllowed() when multiple instances of
* the same Subversion auth provider-based app run concurrently.
*/
/* Implementation of svn_auth__password_set_t that stores
the password in the OS X KeyChain. */
static svn_error_t *
keychain_password_set(svn_boolean_t *done,
apr_hash_t *creds,
const char *realmstring,
const char *username,
const char *password,
apr_hash_t *parameters,
svn_boolean_t non_interactive,
apr_pool_t *pool)
{
OSStatus status;
SecKeychainItemRef item;
if (non_interactive)
SecKeychainSetUserInteractionAllowed(FALSE);
status = SecKeychainFindGenericPassword(NULL, (int) strlen(realmstring),
realmstring, username == NULL
? 0
: (int) strlen(username),
username, 0, NULL, &item);
if (status)
{
if (status == errSecItemNotFound)
status = SecKeychainAddGenericPassword(NULL, (int) strlen(realmstring),
realmstring, username == NULL
? 0
: (int) strlen(username),
username, (int) strlen(password),
password, NULL);
}
else
{
status = SecKeychainItemModifyAttributesAndData(item, NULL,
(int) strlen(password),
password);
CFRelease(item);
}
if (non_interactive)
SecKeychainSetUserInteractionAllowed(TRUE);
*done = (status == 0);
return SVN_NO_ERROR;
}
/* Implementation of svn_auth__password_get_t that retrieves
the password from the OS X KeyChain. */
static svn_error_t *
keychain_password_get(svn_boolean_t *done,
const char **password,
apr_hash_t *creds,
const char *realmstring,
const char *username,
apr_hash_t *parameters,
svn_boolean_t non_interactive,
apr_pool_t *pool)
{
OSStatus status;
UInt32 length;
void *data;
*done = FALSE;
if (non_interactive)
SecKeychainSetUserInteractionAllowed(FALSE);
status = SecKeychainFindGenericPassword(NULL, (int) strlen(realmstring),
realmstring, username == NULL
? 0
: (int) strlen(username),
username, &length, &data, NULL);
if (non_interactive)
SecKeychainSetUserInteractionAllowed(TRUE);
if (status != 0)
return SVN_NO_ERROR;
*password = apr_pstrmemdup(pool, data, length);
SecKeychainItemFreeContent(NULL, data);
*done = TRUE;
return SVN_NO_ERROR;
}
/* Get cached encrypted credentials from the simple provider's cache. */
static svn_error_t *
keychain_simple_first_creds(void **credentials,
void **iter_baton,
void *provider_baton,
apr_hash_t *parameters,
const char *realmstring,
apr_pool_t *pool)
{
return svn_auth__simple_creds_cache_get(credentials,
iter_baton,
provider_baton,
parameters,
realmstring,
keychain_password_get,
SVN_AUTH__KEYCHAIN_PASSWORD_TYPE,
pool);
}
/* Save encrypted credentials to the simple provider's cache. */
static svn_error_t *
keychain_simple_save_creds(svn_boolean_t *saved,
void *credentials,
void *provider_baton,
apr_hash_t *parameters,
const char *realmstring,
apr_pool_t *pool)
{
return svn_auth__simple_creds_cache_set(saved, credentials,
provider_baton,
parameters,
realmstring,
keychain_password_set,
SVN_AUTH__KEYCHAIN_PASSWORD_TYPE,
pool);
}
static const svn_auth_provider_t keychain_simple_provider = {
SVN_AUTH_CRED_SIMPLE,
keychain_simple_first_creds,
NULL,
keychain_simple_save_creds
};
/* Get cached encrypted credentials from the ssl client cert password
provider's cache. */
static svn_error_t *
keychain_ssl_client_cert_pw_first_creds(void **credentials,
void **iter_baton,
void *provider_baton,
apr_hash_t *parameters,
const char *realmstring,
apr_pool_t *pool)
{
return svn_auth__ssl_client_cert_pw_cache_get(credentials,
iter_baton, provider_baton,
parameters, realmstring,
keychain_password_get,
SVN_AUTH__KEYCHAIN_PASSWORD_TYPE,
pool);
}
/* Save encrypted credentials to the ssl client cert password provider's
cache. */
static svn_error_t *
keychain_ssl_client_cert_pw_save_creds(svn_boolean_t *saved,
void *credentials,
void *provider_baton,
apr_hash_t *parameters,
const char *realmstring,
apr_pool_t *pool)
{
return svn_auth__ssl_client_cert_pw_cache_set(saved, credentials,
provider_baton, parameters,
realmstring,
keychain_password_set,
SVN_AUTH__KEYCHAIN_PASSWORD_TYPE,
pool);
}
static const svn_auth_provider_t keychain_ssl_client_cert_pw_provider = {
SVN_AUTH_CRED_SSL_CLIENT_CERT_PW,
keychain_ssl_client_cert_pw_first_creds,
NULL,
keychain_ssl_client_cert_pw_save_creds
};
/* Public API */
void
svn_auth__get_keychain_simple_provider(svn_auth_provider_object_t **provider,
apr_pool_t *pool)
{
svn_auth_provider_object_t *po = apr_pcalloc(pool, sizeof(*po));
po->vtable = &keychain_simple_provider;
*provider = po;
}
void
svn_auth__get_keychain_ssl_client_cert_pw_provider
(svn_auth_provider_object_t **provider,
apr_pool_t *pool)
{
svn_auth_provider_object_t *po = apr_pcalloc(pool, sizeof(*po));
po->vtable = &keychain_ssl_client_cert_pw_provider;
*provider = po;
}
#endif /* SVN_HAVE_KEYCHAIN_SERVICES */
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