Credentials.h

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/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * Credentials.h
 * Handle getting and setting a process's credentials.
 * Copyright (C) 2012 Simon Newton
 */

#ifndef INCLUDE_OLA_BASE_CREDENTIALS_H_
#define INCLUDE_OLA_BASE_CREDENTIALS_H_

#include <unistd.h>
#include <string>

#ifdef _WIN32
#ifndef uid_t
#define uid_t int
#endif  // uid_t
#ifndef gid_t
#define gid_t int
#endif  // gid_t
#endif  // _WIN32

namespace ola {

// These functions wrap their POSIX counterparts.

bool SupportsUIDs();

bool GetUID(uid_t* uid);

bool GetEUID(uid_t* euid);

bool SetUID(uid_t new_uid);

bool GetGID(gid_t* gid);

bool GetEGID(gid_t* egid);

bool SetGID(gid_t new_gid);

int GetGroups(int size, gid_t list[]);

bool SetGroups(size_t size, const gid_t *list);

typedef struct {
  std::string pw_name;

  std::string pw_passwd;  // no passwd for now

  uid_t pw_uid;

  gid_t pw_gid;

  std::string pw_dir;

  std::string pw_shell;
} PasswdEntry;

bool GetPasswdName(const std::string &name, PasswdEntry *passwd);

bool GetPasswdUID(uid_t uid, PasswdEntry *passwd);

typedef struct {
  std::string gr_name;
  std::string gr_passwd;  // no passwd for now
  gid_t gr_gid;
  // vector<string> gr_mem;  // no members for now
} GroupEntry;

bool GetGroupName(const std::string &name, GroupEntry *passwd);

bool GetGroupGID(gid_t gid, GroupEntry *passwd);
}  // namespace ola
#endif  // INCLUDE_OLA_BASE_CREDENTIALS_H_