subversion/libsvn_subr/user.c

   1 /*
   2  * user.c: APR wrapper functions for Subversion
   3  *
   4  * ====================================================================
   5  * Copyright (c) 2000-2004 CollabNet.  All rights reserved.
   6  *
   7  * This software is licensed as described in the file COPYING, which
   8  * you should have received as part of this distribution.  The terms
   9  * are also available at http://subversion.tigris.org/license-1.html.
  10  * If newer versions of this license are posted there, you may use a
  11  * newer version instead, at your option.
  12  *
  13  * This software consists of voluntary contributions made by many
  14  * individuals.  For exact contribution history, see the revision
  15  * history and logs, available at http://subversion.tigris.org/.
  16  * ====================================================================
  17  */
  18
  19
  20 #include <apr_pools.h>
  21 #include <apr_user.h>
  22 #include <apr_env.h>
  23
  24 #include "svn_user.h"
  25 #include "svn_utf.h"
  26
  27 /* Get the current user's name from the OS */
  28 static const char *
  29 get_os_username(apr_pool_t *pool)
  30 {
  31 #if APR_HAS_USER
  32   char *username;
  33   apr_uid_t uid;
  34   apr_gid_t gid;
  35
  36   if (apr_uid_current(&uid, &gid, pool) == APR_SUCCESS &&
  37       apr_uid_name_get(&username, uid, pool) == APR_SUCCESS)
  38     return username;
  39 #endif
  40
  41   return NULL;
  42 }
  43
  44 /* Return a UTF8 version of STR, or NULL on error.
  45    Use POOL for any necessary allocation. */
  46 static const char *
  47 utf8_or_nothing(const char *str, apr_pool_t *pool) {
  48   if (str)
  49     {
  50       const char *utf8_str;
  51       svn_error_t *err = svn_utf_cstring_to_utf8(&utf8_str, str, pool);
  52       if (! err)
  53         return utf8_str;
  54       svn_error_clear(err);
  55     }
  56   return NULL;
  57 }
  58
  59 const char *
  60 svn_user_get_name(apr_pool_t *pool)
  61 {
  62   const char *username = get_os_username(pool);
  63   return utf8_or_nothing(username, pool);
  64 }
  65
  66 const char *
  67 svn_user_get_homedir(apr_pool_t *pool)
  68 {
  69   const char *username;
  70   char *homedir;
  71
  72   if (apr_env_get(&homedir, "HOME", pool) == APR_SUCCESS)
  73     return utf8_or_nothing(homedir, pool);
  74
  75   username = get_os_username(pool);
  76   if (username != NULL &&
  77       apr_uid_homepath_get(&homedir, username, pool) == APR_SUCCESS)
  78     return utf8_or_nothing(homedir, pool);
  79
  80   return NULL;
  81 }