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/* 
   Unix SMB/CIFS implementation.
   passdb structures and parameters
   Copyright (C) Gerald Carter 2001
   Copyright (C) Luke Kenneth Casson Leighton 1998 - 2000
   Copyright (C) Andrew Bartlett 2002
   Copyright (C) Simo Sorce 2003
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program 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 General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef _PASSDB_H
#define _PASSDB_H


/*
 * fields_present flags meanings
 * same names as found in samba4 idl files
 */

#define ACCT_USERNAME		0x00000001
#define ACCT_FULL_NAME		0x00000002
#define ACCT_RID		0x00000004
#define ACCT_PRIMARY_GID	0x00000008
#define ACCT_ADMIN_DESC		0x00000010
#define ACCT_DESCRIPTION	0x00000020
#define ACCT_HOME_DIR		0x00000040
#define ACCT_HOME_DRIVE		0x00000080
#define ACCT_LOGON_SCRIPT	0x00000100
#define ACCT_PROFILE		0x00000200
#define ACCT_WORKSTATIONS	0x00000400
#define ACCT_LAST_LOGON		0x00000800
#define ACCT_LAST_LOGOFF	0x00001000
#define ACCT_LOGON_HOURS	0x00002000
#define ACCT_BAD_PWD_COUNT	0x00004000
#define ACCT_NUM_LOGONS		0x00008000
#define ACCT_ALLOW_PWD_CHANGE	0x00010000
#define ACCT_FORCE_PWD_CHANGE	0x00020000
#define ACCT_LAST_PWD_CHANGE	0x00040000
#define ACCT_EXPIRY		0x00080000
#define ACCT_FLAGS		0x00100000
#define ACCT_CALLBACK		0x00200000
#define ACCT_COUNTRY_CODE	0x00400000
#define ACCT_CODE_PAGE		0x00800000
#define ACCT_NT_PWD_SET		0x01000000
#define ACCT_LM_PWD_SET		0x02000000
#define ACCT_PRIVATEDATA	0x04000000
#define ACCT_EXPIRED_FLAG	0x08000000
#define ACCT_SEC_DESC		0x10000000
#define ACCT_OWF_PWD		0x20000000

/*
 * bit flags representing initialized fields in SAM_ACCOUNT
 */
enum pdb_elements {
	PDB_UNINIT,
	PDB_SMBHOME,
	PDB_PROFILE,
	PDB_DRIVE,
	PDB_LOGONSCRIPT,
	PDB_LOGONTIME,
	PDB_LOGOFFTIME,
	PDB_KICKOFFTIME,
	PDB_BAD_PASSWORD_TIME,
	PDB_CANCHANGETIME,
	PDB_MUSTCHANGETIME,
	PDB_PLAINTEXT_PW,
	PDB_USERNAME,
	PDB_FULLNAME,
	PDB_DOMAIN,
	PDB_NTUSERNAME,
	PDB_HOURSLEN,
	PDB_LOGONDIVS,
	PDB_USERSID,
	PDB_GROUPSID,
	PDB_ACCTCTRL,
	PDB_PASSLASTSET,
	PDB_UNIXHOMEDIR,
	PDB_ACCTDESC,
	PDB_WORKSTATIONS,
	PDB_UNKNOWNSTR,
	PDB_MUNGEDDIAL,
	PDB_HOURS,
	PDB_FIELDS_PRESENT,
	PDB_BAD_PASSWORD_COUNT,
	PDB_LOGON_COUNT,
	PDB_UNKNOWN6,
	PDB_LMPASSWD,
	PDB_NTPASSWD,
	PDB_PWHISTORY,
	PDB_BACKEND_PRIVATE_DATA,

	/* this must be the last element */
	PDB_COUNT
};

enum pdb_group_elements {
	PDB_GROUP_NAME,
	PDB_GROUP_SID,
	PDB_GROUP_SID_NAME_USE,
	PDB_GROUP_MEMBERS,

	/* this must be the last element */
	PDB_GROUP_COUNT
};


enum pdb_value_state {
	PDB_DEFAULT=0,
	PDB_SET,
	PDB_CHANGED
};

#define IS_SAM_SET(x, flag)	(pdb_get_init_flags(x, flag) == PDB_SET)
#define IS_SAM_CHANGED(x, flag)	(pdb_get_init_flags(x, flag) == PDB_CHANGED)
#define IS_SAM_DEFAULT(x, flag)	(pdb_get_init_flags(x, flag) == PDB_DEFAULT)

/* cache for bad password lockout data, to be used on replicated SAMs */
typedef struct logon_cache_struct 
{
	time_t entry_timestamp;
	uint16 acct_ctrl;
	uint16 bad_password_count;
	time_t bad_password_time;
} LOGIN_CACHE;
		
typedef struct sam_passwd
{
	TALLOC_CTX *mem_ctx;
	
	void (*free_fn)(struct sam_passwd **);

	struct pdb_methods *methods;

	struct user_data {
		/* initialization flags */
		struct bitmap *change_flags;
		struct bitmap *set_flags;

		time_t logon_time;            /* logon time */
		time_t logoff_time;           /* logoff time */
		time_t kickoff_time;          /* kickoff time */
		time_t bad_password_time;     /* last bad password entered */
		time_t pass_last_set_time;    /* password last set time */
		time_t pass_can_change_time;  /* password can change time */
		time_t pass_must_change_time; /* password must change time */
		
		const char * username;     /* UNIX username string */
		const char * domain;       /* Windows Domain name */
		const char * nt_username;  /* Windows username string */
		const char * full_name;    /* user's full name string */
		const char * unix_home_dir;     /* UNIX home directory string */
		const char * home_dir;     /* home directory string */
		const char * dir_drive;    /* home directory drive string */
		const char * logon_script; /* logon script string */
		const char * profile_path; /* profile path string */
		const char * acct_desc;    /* user description string */
		const char * workstations; /* login from workstations string */
		const char * unknown_str;  /* don't know what this is, yet. */
		const char * munged_dial;  /* munged path name and dial-back tel number */
		
		DOM_SID user_sid;    /* Primary User SID */
		DOM_SID group_sid;   /* Primary Group SID */
		
		DATA_BLOB lm_pw; /* .data is Null if no password */
		DATA_BLOB nt_pw; /* .data is Null if no password */
		DATA_BLOB nt_pw_his; /* nt hashed password history .data is Null if not available */
		char* plaintext_pw; /* is Null if not available */
		
		uint16 acct_ctrl; /* account info (ACB_xxxx bit-mask) */
		uint32 fields_present; /* 0x00ff ffff */
		
		uint16 logon_divs; /* 168 - number of hours in a week */
		uint32 hours_len; /* normally 21 bytes */
		uint8 hours[MAX_HOURS_LEN];
		
		/* Was unknown_5. */
		uint16 bad_password_count;
		uint16 logon_count;

		uint32 unknown_6; /* 0x0000 04ec */
		/* a tag for who added the private methods */
		const struct pdb_methods *backend_private_methods;
		void *backend_private_data; 
		void (*backend_private_data_free_fn)(void **);
	} private;

	/* Lets see if the remaining code can get the hint that you
	   are meant to use the pdb_...() functions. */
	
} SAM_ACCOUNT;

typedef struct sam_group {
	TALLOC_CTX *mem_ctx;
	
	void (*free_fn)(struct sam_group **);

	struct pdb_methods *methods;

	struct group_data {
		/* initialization flags */
		struct bitmap *change_flags;
		struct bitmap *set_flags;

		const char *name;		/* Windows group name string */

		DOM_SID sid;			/* Group SID */
		enum SID_NAME_USE sid_name_use;	/* Group type */

		uint32 mem_num;			/* Number of member SIDs */
		DOM_SID *members;		/* SID array */
	} private;

} SAM_GROUP;

struct acct_info
{
    fstring acct_name; /* account name */
    fstring acct_desc; /* account name */
    uint32 rid; /* domain-relative RID */
};

/*****************************************************************
 Functions to be implemented by the new (v2) passdb API 
****************************************************************/

/*
 * This next constant specifies the version number of the PASSDB interface
 * this SAMBA will load. Increment this if *ANY* changes are made to the interface. 
 */

#define PASSDB_INTERFACE_VERSION 8

typedef struct pdb_context 
{
	struct pdb_methods *pdb_methods;
	struct pdb_methods *pwent_methods;
	
	/* These functions are wrappers for the functions listed above.
	   They may do extra things like re-reading a SAM_ACCOUNT on update */

	NTSTATUS (*pdb_setsampwent)(struct pdb_context *, BOOL update, uint16 acb_mask);
	
	void (*pdb_endsampwent)(struct pdb_context *);
	
	NTSTATUS (*pdb_getsampwent)(struct pdb_context *, SAM_ACCOUNT *user);
	
	NTSTATUS (*pdb_getsampwnam)(struct pdb_context *, SAM_ACCOUNT *sam_acct, const char *username);
	
	NTSTATUS (*pdb_getsampwsid)(struct pdb_context *, SAM_ACCOUNT *sam_acct, const DOM_SID *sid);

	NTSTATUS (*pdb_add_sam_account)(struct pdb_context *, SAM_ACCOUNT *sampass);
	
	NTSTATUS (*pdb_update_sam_account)(struct pdb_context *, SAM_ACCOUNT *sampass);
	
	NTSTATUS (*pdb_delete_sam_account)(struct pdb_context *, SAM_ACCOUNT *username);

	NTSTATUS (*pdb_update_login_attempts)(struct pdb_context *context, SAM_ACCOUNT *sam_acct, BOOL success);

	NTSTATUS (*pdb_getgrsid)(struct pdb_context *context, GROUP_MAP *map, DOM_SID sid);
	
	NTSTATUS (*pdb_getgrgid)(struct pdb_context *context, GROUP_MAP *map, gid_t gid);
	
	NTSTATUS (*pdb_getgrnam)(struct pdb_context *context, GROUP_MAP *map, const char *name);
	
	NTSTATUS (*pdb_add_group_mapping_entry)(struct pdb_context *context,
						GROUP_MAP *map);
	
	NTSTATUS (*pdb_update_group_mapping_entry)(struct pdb_context *context,
						   GROUP_MAP *map);
	
	NTSTATUS (*pdb_delete_group_mapping_entry)(struct pdb_context *context,
						   DOM_SID sid);
	
	NTSTATUS (*pdb_enum_group_mapping)(struct pdb_context *context,
					   enum SID_NAME_USE sid_name_use,
					   GROUP_MAP **rmap, int *num_entries,
					   BOOL unix_only);

	NTSTATUS (*pdb_enum_group_members)(struct pdb_context *context,
					   TALLOC_CTX *mem_ctx,
					   const DOM_SID *group,
					   uint32 **member_rids,
					   int *num_members);

	NTSTATUS (*pdb_enum_group_memberships)(struct pdb_context *context,
					       const char *username,
					       gid_t primary_gid,
					       DOM_SID **sids, gid_t **gids,
					       int *num_groups);

	NTSTATUS (*pdb_find_alias)(struct pdb_context *context,
				   const char *name, DOM_SID *sid);

	NTSTATUS (*pdb_create_alias)(struct pdb_context *context,
				     const char *name, uint32 *rid);

	NTSTATUS (*pdb_delete_alias)(struct pdb_context *context,
				     const DOM_SID *sid);

	NTSTATUS (*pdb_enum_aliases)(struct pdb_context *context,
				     const DOM_SID *domain_sid,
				     uint32 start_idx, uint32 num_entries,
				     uint32 *num_aliases,
				     struct acct_info **aliases);

	NTSTATUS (*pdb_get_aliasinfo)(struct pdb_context *context,
				      const DOM_SID *sid,
				      struct acct_info *info);

	NTSTATUS (*pdb_set_aliasinfo)(struct pdb_context *context,
				      const DOM_SID *sid,
				      struct acct_info *info);

	NTSTATUS (*pdb_add_aliasmem)(struct pdb_context *context,
				     const DOM_SID *alias,
				     const DOM_SID *member);

	NTSTATUS (*pdb_del_aliasmem)(struct pdb_context *context,
				     const DOM_SID *alias,
				     const DOM_SID *member);

	NTSTATUS (*pdb_enum_aliasmem)(struct pdb_context *context,
				      const DOM_SID *alias,
				      DOM_SID **members, int *num_members);

	NTSTATUS (*pdb_enum_alias_memberships)(struct pdb_context *context,
					       TALLOC_CTX *mem_ctx,
					       const DOM_SID *domain_sid,
					       const DOM_SID *members,
					       int num_members,
					       uint32 **alias_rids,
					       int *num_alias_rids);

	NTSTATUS (*pdb_lookup_rids)(struct pdb_context *context,
				    TALLOC_CTX *mem_ctx,
				    const DOM_SID *domain_sid,
				    int num_rids,
				    uint32 *rids,
				    const char ***names,
				    uint32 **attrs);

	void (*free_fn)(struct pdb_context **);
	
	TALLOC_CTX *mem_ctx;
	
} PDB_CONTEXT;

typedef struct pdb_methods 
{
	const char *name; /* What name got this module */
	struct pdb_context *parent;

	/* Use macros from dlinklist.h on these two */
	struct pdb_methods *next;
	struct pdb_methods *prev;

	NTSTATUS (*setsampwent)(struct pdb_methods *, BOOL update, uint16 acb_mask);
	
	void (*endsampwent)(struct pdb_methods *);
	
	NTSTATUS (*getsampwent)(struct pdb_methods *, SAM_ACCOUNT *user);
	
	NTSTATUS (*getsampwnam)(struct pdb_methods *, SAM_ACCOUNT *sam_acct, const char *username);
	
	NTSTATUS (*getsampwsid)(struct pdb_methods *, SAM_ACCOUNT *sam_acct, const DOM_SID *sid);
	
	NTSTATUS (*add_sam_account)(struct pdb_methods *, SAM_ACCOUNT *sampass);
	
	NTSTATUS (*update_sam_account)(struct pdb_methods *, SAM_ACCOUNT *sampass);
	
	NTSTATUS (*delete_sam_account)(struct pdb_methods *, SAM_ACCOUNT *username);
	
	NTSTATUS (*update_login_attempts)(struct pdb_methods *methods, SAM_ACCOUNT *sam_acct, BOOL success);

	NTSTATUS (*getgrsid)(struct pdb_methods *methods, GROUP_MAP *map, DOM_SID sid);

	NTSTATUS (*getgrgid)(struct pdb_methods *methods, GROUP_MAP *map, gid_t gid);

	NTSTATUS (*getgrnam)(struct pdb_methods *methods, GROUP_MAP *map, const char *name);

	NTSTATUS (*add_group_mapping_entry)(struct pdb_methods *methods,
					    GROUP_MAP *map);

	NTSTATUS (*update_group_mapping_entry)(struct pdb_methods *methods,
					       GROUP_MAP *map);

	NTSTATUS (*delete_group_mapping_entry)(struct pdb_methods *methods,
					       DOM_SID sid);

	NTSTATUS (*enum_group_mapping)(struct pdb_methods *methods,
				       enum SID_NAME_USE sid_name_use,
				       GROUP_MAP **rmap, int *num_entries,
				       BOOL unix_only);

	NTSTATUS (*enum_group_members)(struct pdb_methods *methods,
				       TALLOC_CTX *mem_ctx,
				       const DOM_SID *group,
				       uint32 **member_rids,
				       int *num_members);

	NTSTATUS (*enum_group_memberships)(struct pdb_methods *methods,
					   const char *username,
					   gid_t primary_gid,
					   DOM_SID **sids, gid_t **gids,
					   int *num_groups);

	NTSTATUS (*find_alias)(struct pdb_methods *methods,
			       const char *name, DOM_SID *sid);

	NTSTATUS (*create_alias)(struct pdb_methods *methods,
				 const char *name, uint32 *rid);

	NTSTATUS (*delete_alias)(struct pdb_methods *methods,
				 const DOM_SID *sid);

	NTSTATUS (*enum_aliases)(struct pdb_methods *methods,
				 const DOM_SID *domain_sid,
				 uint32 start_idx, uint32 max_entries,
				 uint32 *num_aliases, struct acct_info **info);

	NTSTATUS (*get_aliasinfo)(struct pdb_methods *methods,
				  const DOM_SID *sid,
				  struct acct_info *info);

	NTSTATUS (*set_aliasinfo)(struct pdb_methods *methods,
				  const DOM_SID *sid,
				  struct acct_info *info);

	NTSTATUS (*add_aliasmem)(struct pdb_methods *methods,
				 const DOM_SID *alias, const DOM_SID *member);
	NTSTATUS (*del_aliasmem)(struct pdb_methods *methods,
				 const DOM_SID *alias, const DOM_SID *member);
	NTSTATUS (*enum_aliasmem)(struct pdb_methods *methods,
				  const DOM_SID *alias, DOM_SID **members,
				  int *num_members);
	NTSTATUS (*enum_alias_memberships)(struct pdb_methods *methods,
					   TALLOC_CTX *mem_ctx,
					   const DOM_SID *domain_sid,
					   const DOM_SID *members,
					   int num_members,
					   uint32 **alias_rids,
					   int *num_alias_rids);
	NTSTATUS (*lookup_rids)(struct pdb_methods *methods,
				TALLOC_CTX *mem_ctx,
				const DOM_SID *domain_sid,
				int num_rids,
				uint32 *rids,
				const char ***names,
				uint32 **attrs);

	void *private_data;  /* Private data of some kind */
	
	void (*free_private_data)(void **);

} PDB_METHODS;

typedef NTSTATUS (*pdb_init_function)(struct pdb_context *, 
			 struct pdb_methods **, 
			 const char *);

struct pdb_init_function_entry {
	const char *name;
	/* Function to create a member of the pdb_methods list */
	pdb_init_function init;
	struct pdb_init_function_entry *prev, *next;
};

enum sql_search_field { SQL_SEARCH_NONE = 0, SQL_SEARCH_USER_SID = 1, SQL_SEARCH_USER_NAME = 2};

#endif /* _PASSDB_H */