/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
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 *
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

#include "apr_strings.h"
#include "apr_portable.h"
#include "apr_user.h"
#include "apr_private.h"
#if APR_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

APR_DECLARE(apr_status_t) apr_get_home_directory(char **dirname, const char *username, apr_pool_t *p)
{
    return APR_ENOTIMPL;
}

APR_DECLARE(apr_status_t) apr_get_userid(apr_uid_t *uid, apr_gid_t *gid,
                                         const char *username, apr_pool_t *p)
{
    SID_NAME_USE sidtype;
    char *domain = NULL;
    DWORD sidlen, rv;
    char *pos;

    if (pos = strchr(username, '/')) {
        domain = apr_pstrndup(p, username, pos - username);
        username = pos + 1;
    }
    else if (pos = strchr(username, '\\')) {
        domain = apr_pstrndup(p, username, pos - username);
        username = pos + 1;
    }
    /* Get nothing on the first pass ... need to size the sid buffer 
     */
    sidlen = LookupAccountName(domain, username, NULL, NULL, 
                               NULL, NULL, &sidtype);
    if (sidlen) {
        /* Give it back on the second pass
         */
        *uid = apr_palloc(p, sidlen);
        rv = LookupAccountName(domain, username, *uid, &sidlen, 
                               NULL, NULL, &sidtype);
    }
    if (!sidlen || !rv) {
        return apr_get_os_error();
    }
    /* There doesn't seem to be a simple way to retrieve the primary group sid
     */
    *gid = NULL;
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_get_username(char **username, apr_uid_t userid, apr_pool_t *p)
{
    SID_NAME_USE type;
    char name[MAX_PATH], domain[MAX_PATH];
    DWORD cbname = sizeof(name), cbdomain = sizeof(domain);
    if (!userid)
        return APR_BADARG;
    if (!LookupAccountSid(NULL, userid, name, &cbname, domain, &cbdomain, &type))
        return apr_get_os_error();
    if (type != SidTypeUser && type != SidTypeAlias)
        return APR_BADARG;
    *username = apr_pstrdup(p, name);
    return APR_SUCCESS;
}
  
APR_DECLARE(apr_status_t) apr_compare_users(apr_uid_t left, apr_uid_t right)
{
    if (!left || !right)
        return APR_BADARG;
    if (!IsValidSid(left) || !IsValidSid(right))
        return APR_BADARG;
    if (!EqualSid(left, right))
        return APR_EMISMATCH;
    return APR_SUCCESS;
}