converted the passdb smbpasswd implementation to using talloc

[Samba/gbeck.git] / source / rpc_server / srv_samr_nt.c

/*
 *  Unix SMB/Netbios implementation.
 *  Version 1.9.
 *  RPC Pipe client / server routines
 *  Copyright (C) Andrew Tridgell              1992-1997,
 *  Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
 *  Copyright (C) Paul Ashton                       1997.
 *  Copyright (C) Marc Jacobsen                     1999.
 *  Copyright (C) Jeremy Allison                    2001.
 *
 *  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.
 */

/*
 * This is the implementation of the SAMR code.
 */

#include "includes.h"

extern int DEBUGLEVEL;

extern fstring global_myworkgroup;
extern pstring global_myname;
extern DOM_SID global_sam_sid;
extern DOM_SID global_sid_Builtin;

extern rid_name domain_group_rids[];
extern rid_name domain_alias_rids[];
extern rid_name builtin_alias_rids[];

struct samr_info {
    /* for use by the \PIPE\samr policy */
    DOM_SID sid;
    uint32 status; /* some sort of flag.  best to record it.  comes from opnum 0x39 */
};

/*******************************************************************
 Function to free the per handle data.
 ********************************************************************/

static void free_samr_info(void *ptr)
{
        struct samr_info *samr = (struct samr_info *)ptr;

        safe_free(samr);
}

/*******************************************************************
 Ensure password info is never given out. Paranioa... JRA.
 ********************************************************************/

static void samr_clear_passwd_fields( SAM_USER_INFO_21 *pass, int num_entries)
{
        int i;

        if (!pass)
                return;

        for (i = 0; i < num_entries; i++) {
                memset(&pass[i].lm_pwd, '\0', sizeof(pass[i].lm_pwd));
                memset(&pass[i].nt_pwd, '\0', sizeof(pass[i].nt_pwd));
        }
}

static void samr_clear_sam_passwd( SAM_ACCOUNT *sam_pass)
{
        if (!sam_pass)
                return;

        if (sam_pass->lm_pw)
                memset(sam_pass->lm_pw, '\0', 16);
        if (sam_pass->nt_pw)
                memset(sam_pass->nt_pw, '\0', 16);
}

/*******************************************************************
  This next function should be replaced with something that
  dynamically returns the correct user info..... JRA.
 ********************************************************************/

static BOOL get_sampwd_entries(SAM_USER_INFO_21 *pw_buf, int start_idx,
                                int *total_entries, int *num_entries,
                                int max_num_entries, uint16 acb_mask)
{
    SAM_ACCOUNT *pwd = NULL;

    (*num_entries) = 0;
    (*total_entries) = 0;

    if (pw_buf == NULL)
        return False;

        if (!pdb_setsampwent(False)) {
        DEBUG(0, ("get_sampwd_entries: Unable to open passdb.\n"));
        return False;
    }

    while (((pwd = pdb_getsampwent()) != NULL) && (*num_entries) < max_num_entries) {
        int user_name_len;

        if (start_idx > 0) {
            /* skip the requested number of entries.
               not very efficient, but hey...
             */
            start_idx--;
            continue;
        }

        user_name_len = strlen(pdb_get_username(pwd))+1;
        init_unistr2(&pw_buf[(*num_entries)].uni_user_name, pdb_get_username(pwd), user_name_len);
        init_uni_hdr(&pw_buf[(*num_entries)].hdr_user_name, user_name_len);
        pw_buf[(*num_entries)].user_rid = pwd->user_rid;
        memset((char *)pw_buf[(*num_entries)].nt_pwd, '\0', 16);

        /* Now check if the NT compatible password is available. */
        if (pdb_get_nt_passwd(pwd))
            memcpy( pw_buf[(*num_entries)].nt_pwd , pdb_get_nt_passwd(pwd), 16);

        pw_buf[(*num_entries)].acb_info = pdb_get_acct_ctrl(pwd);

        DEBUG(5, ("entry idx: %d user %s, rid 0x%x, acb %x",
                  (*num_entries), pdb_get_username(pwd), pdb_get_user_rid(pwd), pdb_get_acct_ctrl(pwd) ));

        if (acb_mask == 0 || (pwd->acct_ctrl & acb_mask)) {
            DEBUG(5,(" acb_mask %x accepts\n", acb_mask));
            (*num_entries)++;
        }
        else
            DEBUG(5,(" acb_mask %x rejects\n", acb_mask));

        (*total_entries)++;
    }

    pdb_endsampwent();

    return (*num_entries) > 0;
}

static BOOL jf_get_sampwd_entries(SAM_USER_INFO_21 *pw_buf, int start_idx,
                                int *total_entries, uint32 *num_entries,
                                int max_num_entries, uint16 acb_mask)
{
    SAM_ACCOUNT *pwd = NULL;

        *num_entries = 0;
        *total_entries = 0;

        if (pw_buf == NULL)
                return False;

        if (!pdb_setsampwent(False)) {
        DEBUG(0, ("jf_get_sampwd_entries: Unable to open passdb.\n"));
        return False;
    }

        while (((pwd = pdb_getsampwent()) != NULL) && (*num_entries) < max_num_entries) {
                int user_name_len;
                int full_name_len;

                if (acb_mask != 0 && !(pdb_get_acct_ctrl(pwd) & acb_mask))
                        continue;

                if (start_idx > 0) {
                        /* skip the requested number of entries.
                           not very efficient, but hey...
                        */
                        start_idx--;
                        continue;
                }

                ZERO_STRUCTP(&pw_buf[(*num_entries)]);

                user_name_len = strlen(pdb_get_username(pwd));
                init_unistr2(&pw_buf[(*num_entries)].uni_user_name, pdb_get_username(pwd), user_name_len);
                init_uni_hdr(&pw_buf[(*num_entries)].hdr_user_name, user_name_len);

                full_name_len = strlen(pdb_get_fullname(pwd));
                init_unistr2(&pw_buf[(*num_entries)].uni_full_name, pdb_get_fullname(pwd), full_name_len);
                init_uni_hdr(&pw_buf[(*num_entries)].hdr_full_name, full_name_len);

                pw_buf[(*num_entries)].user_rid = pdb_get_user_rid(pwd);
                memset((char *)pw_buf[(*num_entries)].nt_pwd, '\0', 16);

                /* Now check if the NT compatible password is available. */
        if (pdb_get_nt_passwd(pwd))
            memcpy( pw_buf[(*num_entries)].nt_pwd , pdb_get_nt_passwd(pwd), 16);

                pw_buf[(*num_entries)].acb_info = pdb_get_acct_ctrl(pwd);

                DEBUG(5, ("entry idx: %d user %s, rid 0x%x, acb %x\n", (*num_entries),
                  pdb_get_username(pwd), pdb_get_user_rid(pwd), pdb_get_acct_ctrl(pwd) ));
                (*num_entries)++;
        }

    pdb_endsampwent();

        *total_entries = *num_entries;
        return True;
}

/*******************************************************************
 This function uses the username map file and tries to map a UNIX
 user name to an DOS name.  (Sort of the reverse of the
 map_username() function.)  Since more than one DOS name can map
 to the UNIX name, to reverse the mapping you have to specify
 which corresponding DOS name you want; that's where the name_idx
 parameter comes in.  Returns the string requested or NULL if it
 fails or can't complete the request for any reason.  This doesn't
 handle group names (starting with '@') or names starting with
 '+' or '&'.  If they are encountered, they are skipped.
********************************************************************/

static char *unmap_unixname(char *unix_user_name, int name_idx)
{
        char *mapfile = lp_username_map();
        char **lines;
        static pstring tok;
        int i;

        if (!*unix_user_name) return NULL;
        if (!*mapfile) return NULL;

        lines = file_lines_load(mapfile, NULL,False);
        if (!lines) {
                DEBUG(0,("unmap_unixname: can't open username map %s\n", mapfile));
                return NULL;
        }

        DEBUG(5,("unmap_unixname: scanning username map %s, index: %d\n", mapfile, name_idx));

        for (i=0; lines[i]; i++) {
                char *unixname = lines[i];
                char *dosname = strchr(unixname,'=');

                if (!dosname)
                        continue;

                *dosname++ = 0;

                while (isspace(*unixname))
                        unixname++;
                if ('!' == *unixname) {
                        unixname++;
                        while (*unixname && isspace(*unixname))
                                unixname++;
                }
    
                if (!*unixname || strchr("#;",*unixname))
                        continue;

                if (strncmp(unixname, unix_user_name, strlen(unix_user_name)))
                        continue;

                /* We have matched the UNIX user name */

                while(next_token(&dosname, tok, LIST_SEP, sizeof(tok))) {
                        if (!strchr("@&+", *tok)) {
                                name_idx--;
                                if (name_idx < 0 ) {
                                        break;
                                }
                        }
                }

                if (name_idx >= 0) {
                        DEBUG(0,("unmap_unixname: index too high - not that many DOS names\n"));
                        file_lines_free(lines);
                        return NULL;
                } else {
                        file_lines_free(lines);
                        return tok;
                }
        }

        DEBUG(0,("unmap_unixname: Couldn't find the UNIX user name\n"));
        file_lines_free(lines);
        return NULL;
}

/*******************************************************************
 This function sets up a list of users taken from the list of
 users that UNIX knows about, as well as all the user names that
 Samba maps to a valid UNIX user name.  (This should work with
 /etc/passwd or NIS.)
********************************************************************/

static BOOL get_passwd_entries(SAM_USER_INFO_21 *pw_buf,
                                int start_idx,
                                int *total_entries, int *num_entries,
                                int max_num_entries,
                                uint16 acb_mask)
{
        static struct passwd *pwd = NULL;
        static uint32 pw_rid;
        static BOOL orig_done = False;
        static int current_idx = 0;
        static int mapped_idx = 0;
        char *sep;

        DEBUG(5, ("get_passwd_entries: retrieving a list of UNIX users\n"));

        (*num_entries) = 0;
        (*total_entries) = 0;

        /* Skip all this stuff if we're in appliance mode */

        if (lp_hide_local_users()) goto done;

        if (pw_buf == NULL) return False;

        if (current_idx == 0) {
                sys_setpwent();
        }

        /* These two cases are inefficient, but should be called very rarely */
        /* they are the cases where the starting index isn't picking up      */
        /* where we left off last time.  It is efficient when it starts over */
        /* at zero though.                                                   */
        if (start_idx > current_idx) {
                /* We aren't far enough; advance to start_idx */
                while (current_idx <= start_idx) {
                        char *unmap_name;

                        if(!orig_done) {
                                if ((pwd = sys_getpwent()) == NULL) break;
                                current_idx++;
                                orig_done = True;
                        }

                        while (((unmap_name = unmap_unixname(pwd->pw_name, mapped_idx)) != NULL) && 
                                (current_idx < start_idx)) {
                                current_idx++;
                                mapped_idx++;
                        }

                        if (unmap_name == NULL) {
                                orig_done = False;
                                mapped_idx = 0;
                        }
                }
        } else if (start_idx < current_idx) {
                /* We are already too far; start over and advance to start_idx */
                sys_endpwent();
                sys_setpwent();
                current_idx = 0;
                mapped_idx = 0;
                orig_done = False;
                while (current_idx < start_idx) {
                        char *unmap_name;

                        if(!orig_done) {
                                if ((pwd = sys_getpwent()) == NULL) break;
                                current_idx++;
                                orig_done = True;
                        }

                        while (((unmap_name = unmap_unixname(pwd->pw_name, mapped_idx)) != NULL) && 
                                (current_idx < start_idx)) {
                                current_idx++;
                                mapped_idx++;
                        }

                        if (unmap_name == NULL) {
                                orig_done = False;
                                mapped_idx = 0;
                        }
                }
        }

        sep = lp_winbind_separator();

        /* now current_idx == start_idx */
        while ((*num_entries) < max_num_entries) {
                int user_name_len;
                char *unmap_name;

                /* This does the original UNIX user itself */
                if(!orig_done) {
                        if ((pwd = sys_getpwent()) == NULL) break;

                        /* Don't enumerate winbind users as they are not local */

                        if (strchr(pwd->pw_name, *sep) != NULL) {
                                continue;
                        }

                        user_name_len = strlen(pwd->pw_name);
                        
                        /* skip the trust account stored in the /etc/passwd file */
                        if (pwd->pw_name[user_name_len-1]=='$')
                                continue;
                        
                        pw_rid = pdb_uid_to_user_rid(pwd->pw_uid);
                        ZERO_STRUCTP(&pw_buf[(*num_entries)]);
                        init_unistr2(&pw_buf[(*num_entries)].uni_user_name, pwd->pw_name, user_name_len);
                        init_uni_hdr(&pw_buf[(*num_entries)].hdr_user_name, user_name_len);
                        pw_buf[(*num_entries)].user_rid = pw_rid;
                        memset((char *)pw_buf[(*num_entries)].nt_pwd, '\0', 16);

                        pw_buf[(*num_entries)].acb_info = ACB_NORMAL;

                        DEBUG(5, ("get_passwd_entries: entry idx %d user %s, rid 0x%x\n", (*num_entries), pwd->pw_name, pw_rid));

                        (*num_entries)++;
                        (*total_entries)++;
                        current_idx++;
                        orig_done = True;
                }

                /* This does all the user names that map to the UNIX user */
                while (((unmap_name = unmap_unixname(pwd->pw_name, mapped_idx)) != NULL) && 
                        (*num_entries < max_num_entries)) {
                        user_name_len = strlen(unmap_name);
                        ZERO_STRUCTP(&pw_buf[(*num_entries)]);
                        init_unistr2(&pw_buf[(*num_entries)].uni_user_name, unmap_name, user_name_len);
                        init_uni_hdr(&pw_buf[(*num_entries)].hdr_user_name, user_name_len);
                        pw_buf[(*num_entries)].user_rid = pw_rid;
                        memset((char *)pw_buf[(*num_entries)].nt_pwd, '\0', 16);

                        pw_buf[(*num_entries)].acb_info = ACB_NORMAL;

                        DEBUG(5, ("get_passwd_entries: entry idx %d user %s, rid 0x%x\n", (*num_entries), pwd->pw_name, pw_rid));

                        (*num_entries)++;
                        (*total_entries)++;
                        current_idx++;
                        mapped_idx++;
                }

                if (unmap_name == NULL) {
                        /* done with 'aliases', go on to next UNIX user */
                        orig_done = False;
                        mapped_idx = 0;
                }
        }

        if (pwd == NULL) {
                /* totally done, reset everything */
                sys_endpwent();
                current_idx = 0;
                mapped_idx = 0;
        }

done:
        return (*num_entries) > 0;
}

/*******************************************************************
 _samr_close_hnd
 ********************************************************************/

uint32 _samr_close_hnd(pipes_struct *p, SAMR_Q_CLOSE_HND *q_u, SAMR_R_CLOSE_HND *r_u)
{
        r_u->status = NT_STATUS_NOPROBLEMO;

        /* close the policy handle */
        if (!close_policy_hnd(p, &q_u->pol))
                return NT_STATUS_OBJECT_NAME_INVALID;

        DEBUG(5,("samr_reply_close_hnd: %d\n", __LINE__));

        return r_u->status;
}

/*******************************************************************
 samr_reply_open_domain
 ********************************************************************/

uint32 _samr_open_domain(pipes_struct *p, SAMR_Q_OPEN_DOMAIN *q_u, SAMR_R_OPEN_DOMAIN *r_u)
{
        struct samr_info *info;

        r_u->status = NT_STATUS_NOPROBLEMO;

        /* find the connection policy handle. */
        if (!find_policy_by_hnd(p, &q_u->pol, NULL))
                return NT_STATUS_INVALID_HANDLE;

        /* associate the domain SID with the (unique) handle. */
        if ((info = (struct samr_info *)malloc(sizeof(struct samr_info))) == NULL)
                return NT_STATUS_NO_MEMORY;

        ZERO_STRUCTP(info);
        info->sid = q_u->dom_sid.sid;

        /* get a (unique) handle.  open a policy on it. */
        if (!create_policy_hnd(p, &r_u->domain_pol, free_samr_info, (void *)info))
                return NT_STATUS_OBJECT_NAME_NOT_FOUND;

        DEBUG(5,("samr_open_domain: %d\n", __LINE__));

        return r_u->status;
}

static uint32 get_lsa_policy_samr_rid(struct samr_info *info)
{
        if (!info) {
        DEBUG(3,("Error getting policy\n"));
            return 0xffffffff;
        }

        return info->sid.sub_auths[info->sid.num_auths-1];
}

/*******************************************************************
 _samr_get_usrdom_pwinfo
 ********************************************************************/

uint32 _samr_get_usrdom_pwinfo(pipes_struct *p, SAMR_Q_GET_USRDOM_PWINFO *q_u, SAMR_R_GET_USRDOM_PWINFO *r_u)
{
        struct samr_info *info = NULL;

        r_u->status = NT_STATUS_NOPROBLEMO;

        /* find the policy handle.  open a policy on it. */
        if (!find_policy_by_hnd(p, &q_u->user_pol, (void **)&info)) {
                return NT_STATUS_INVALID_HANDLE;
        }

        /* find the user's rid */
        if (get_lsa_policy_samr_rid(info) == 0xffffffff) {
                return NT_STATUS_OBJECT_TYPE_MISMATCH;
        }

        init_samr_r_get_usrdom_pwinfo(r_u, NT_STATUS_NOPROBLEMO);

        DEBUG(5,("_samr_get_usrdom_pwinfo: %d\n", __LINE__));

        return r_u->status;
}

/*******************************************************************
 samr_make_usr_obj_sd
 ********************************************************************/

static uint32 samr_make_usr_obj_sd(TALLOC_CTX *ctx, SEC_DESC_BUF **buf, DOM_SID *usr_sid)
{
        extern DOM_SID global_sid_World;
        DOM_SID adm_sid;
        DOM_SID act_sid;

        SEC_ACE ace[4];
        SEC_ACCESS mask;

        SEC_ACL *psa = NULL;
        SEC_DESC *psd = NULL;
        size_t sd_size;

        sid_copy(&adm_sid, &global_sid_Builtin);
        sid_append_rid(&adm_sid, BUILTIN_ALIAS_RID_ADMINS);

        sid_copy(&act_sid, &global_sid_Builtin);
        sid_append_rid(&act_sid, BUILTIN_ALIAS_RID_ACCOUNT_OPS);

        init_sec_access(&mask, 0x2035b);
        init_sec_ace(&ace[0], &global_sid_World, SEC_ACE_TYPE_ACCESS_ALLOWED, mask, 0);

        init_sec_access(&mask, 0xf07ff);
        init_sec_ace(&ace[1], &adm_sid, SEC_ACE_TYPE_ACCESS_ALLOWED, mask, 0);
        init_sec_ace(&ace[2], &act_sid, SEC_ACE_TYPE_ACCESS_ALLOWED, mask, 0);

        init_sec_access(&mask,0x20044);
        init_sec_ace(&ace[3], usr_sid, SEC_ACE_TYPE_ACCESS_ALLOWED, mask, 0);

        if((psa = make_sec_acl(ctx, NT4_ACL_REVISION, 4, ace)) == NULL)
                return NT_STATUS_NO_MEMORY;

        if((psd = make_sec_desc(ctx, SEC_DESC_REVISION, NULL, NULL, NULL, psa, &sd_size)) == NULL)
                return NT_STATUS_NO_MEMORY;

        if((*buf = make_sec_desc_buf(ctx, sd_size, psd)) == NULL)
                return NT_STATUS_NO_MEMORY;

        return NT_STATUS_NOPROBLEMO;
}

static BOOL get_lsa_policy_samr_sid(pipes_struct *p, POLICY_HND *pol, DOM_SID *sid)
{
        struct samr_info *info = NULL;

        /* find the policy handle.  open a policy on it. */
        if (!find_policy_by_hnd(p, pol, (void **)&info))
                return False;

        if (!info)
                return False;

        *sid = info->sid;
        return True;
}

/*******************************************************************
 _samr_query_sec_obj
 ********************************************************************/

uint32 _samr_query_sec_obj(pipes_struct *p, SAMR_Q_QUERY_SEC_OBJ *q_u, SAMR_R_QUERY_SEC_OBJ *r_u)
{
        DOM_SID pol_sid;

        r_u->status = NT_STATUS_NOPROBLEMO;

        /* Get the SID. */

        if (!get_lsa_policy_samr_sid(p, &q_u->user_pol, &pol_sid))
                return NT_STATUS_INVALID_HANDLE;

        r_u->status = samr_make_usr_obj_sd(p->mem_ctx, &r_u->buf, &pol_sid);

        if (r_u->status == NT_STATUS_NOPROBLEMO)
                r_u->ptr = 1;

        return r_u->status;
}

/*******************************************************************
makes a SAM_ENTRY / UNISTR2* structure from a user list.
********************************************************************/

static void make_user_sam_entry_list(TALLOC_CTX *ctx, SAM_ENTRY **sam_pp, UNISTR2 **uni_name_pp,
                uint32 num_sam_entries, SAM_USER_INFO_21 *pass)
{
        uint32 i;
        SAM_ENTRY *sam;
        UNISTR2 *uni_name;

        *sam_pp = NULL;
        *uni_name_pp = NULL;

        if (num_sam_entries == 0)
                return;

        sam = (SAM_ENTRY *)talloc(ctx, sizeof(SAM_ENTRY)*num_sam_entries);

        uni_name = (UNISTR2 *)talloc(ctx, sizeof(UNISTR2)*num_sam_entries);

        if (sam == NULL || uni_name == NULL) {
                DEBUG(0, ("NULL pointers in SAMR_R_QUERY_DISPINFO\n"));
                return;
        }

        for (i = 0; i < num_sam_entries; i++) {
                int len = pass[i].uni_user_name.uni_str_len;

                init_sam_entry(&sam[i], len, pass[i].user_rid);
                copy_unistr2(&uni_name[i], &pass[i].uni_user_name);
        }

        *sam_pp = sam;
        *uni_name_pp = uni_name;
}

/*******************************************************************
 samr_reply_enum_dom_users
 ********************************************************************/

uint32 _samr_enum_dom_users(pipes_struct *p, SAMR_Q_ENUM_DOM_USERS *q_u, SAMR_R_ENUM_DOM_USERS *r_u)
{
        SAM_USER_INFO_21 pass[MAX_SAM_ENTRIES];
        int num_entries = 0;
        int total_entries = 0;
        BOOL ret;
        
        r_u->status = NT_STATUS_NOPROBLEMO;

        /* find the policy handle.  open a policy on it. */
        if (!find_policy_by_hnd(p, &q_u->pol, NULL))
                return NT_STATUS_INVALID_HANDLE;

        DEBUG(5,("_samr_enum_dom_users: %d\n", __LINE__));

        become_root();
        ret = get_sampwd_entries(pass, q_u->start_idx, &total_entries, &num_entries,
                                                                MAX_SAM_ENTRIES, q_u->acb_mask);
        unbecome_root();

        if (!ret)
                return NT_STATUS_ACCESS_DENIED;

        samr_clear_passwd_fields(pass, num_entries);

        /* 
         * Note from JRA. total_entries is not being used here. Currently if there is a
         * large user base then it looks like NT will enumerate until get_sampwd_entries
         * returns False due to num_entries being zero. This will cause an access denied
         * return. I don't think this is right and needs further investigation. Note that
         * this is also the same in the TNG code (I don't think that has been tested with
         * a very large user list as MAX_SAM_ENTRIES is set to 600).
         * 
         * I also think that one of the 'num_entries' return parameters is probably
         * the "max entries" parameter - but in the TNG code they're all currently set to the same
         * value (again I think this is wrong).
         */

        make_user_sam_entry_list(p->mem_ctx, &r_u->sam, &r_u->uni_acct_name, num_entries, pass);

        init_samr_r_enum_dom_users(r_u, q_u->start_idx + num_entries, num_entries);

        DEBUG(5,("_samr_enum_dom_users: %d\n", __LINE__));

        return r_u->status;
}

/*******************************************************************
makes a SAM_ENTRY / UNISTR2* structure from a group list.
********************************************************************/

static void make_group_sam_entry_list(TALLOC_CTX *ctx, SAM_ENTRY **sam_pp, UNISTR2 **uni_name_pp,
                uint32 num_sam_entries, DOMAIN_GRP *grp)
{
        uint32 i;
        SAM_ENTRY *sam;
        UNISTR2 *uni_name;

        *sam_pp = NULL;
        *uni_name_pp = NULL;

        if (num_sam_entries == 0)
                return;

        sam = (SAM_ENTRY *)talloc(ctx, sizeof(SAM_ENTRY)*num_sam_entries);

        uni_name = (UNISTR2 *)talloc(ctx, sizeof(UNISTR2)*num_sam_entries);

        if (sam == NULL || uni_name == NULL) {
                DEBUG(0, ("NULL pointers in SAMR_R_QUERY_DISPINFO\n"));
                return;
        }

        for (i = 0; i < num_sam_entries; i++) {
                /*
                 * JRA. I think this should include the null. TNG does not.
                 */
                int len = strlen(grp[i].name)+1;

                init_sam_entry(&sam[i], len, grp[i].rid);
                init_unistr2(&uni_name[i], grp[i].name, len);
        }

        *sam_pp = sam;
        *uni_name_pp = uni_name;
}

/*******************************************************************
 Get the group entries - similar to get_sampwd_entries().
 ********************************************************************/

static BOOL get_group_alias_entries(DOMAIN_GRP *d_grp, DOM_SID *sid, uint32 start_idx,
                                    uint32 *p_num_entries, uint32 max_entries)
{
        fstring sid_str;
        fstring sam_sid_str;
        uint32 num_entries = 0;

        sid_to_string(sid_str, sid);
        sid_to_string(sam_sid_str, &global_sam_sid);

        *p_num_entries = 0;

        /* well-known aliases */
        if (strequal(sid_str, "S-1-5-32")) {
                char *name;
                while (!lp_hide_local_users() &&
                                num_entries < max_entries && 
                                ((name = builtin_alias_rids[num_entries].name) != NULL)) {

                        fstrcpy(d_grp[num_entries].name, name);
                        d_grp[num_entries].rid = builtin_alias_rids[num_entries].rid;

                        num_entries++;
                }
        } else if (strequal(sid_str, sam_sid_str) && !lp_hide_local_users()) {
                char *name;
                char *sep;
                struct group *grp;

                sep = lp_winbind_separator();

                /* local aliases */
                /* we return the UNIX groups here.  This seems to be the right */
                /* thing to do, since NT member servers return their local     */
                /* groups in the same situation.                               */
                setgrent();

                while (num_entries < max_entries && ((grp = getgrent()) != NULL)) {
                        int i;
                        uint32 trid;
                        name = grp->gr_name;

                        DEBUG(10,("get_group_alias_entries: got group %s\n", name ));

                        /* Don't return winbind groups as they are not local! */

                        if (strchr(name, *sep) != NULL) {
                                DEBUG(10,("get_group_alias_entries: not returing %s, not local.\n", name ));
                                continue;
                        }

                        /* Don't return user private groups... */
                        if (Get_Pwnam(name, False) != 0) {
                                DEBUG(10,("get_group_alias_entries: not returing %s, clashes with user.\n", name ));
                                continue;
                        }

                        trid = pdb_gid_to_group_rid(grp->gr_gid);
                        for( i = 0; i < num_entries; i++)
                                if ( d_grp[i].rid == trid ) break;

                        if ( i < num_entries )
                                continue; /* rid was there, dup! */

                        /* JRA - added this for large group db enumeration... */

                        if (start_idx > 0) {
                                /* skip the requested number of entries.
                                        not very efficient, but hey...
                                */
                                start_idx--;
                                continue;
                        }

                        fstrcpy(d_grp[num_entries].name, name);
                        d_grp[num_entries].rid = trid;
                        num_entries++;
                }

                endgrent();
        }

        *p_num_entries = num_entries;

        return True;
}

/*******************************************************************
 Get the group entries - similar to get_sampwd_entries().
 ********************************************************************/

static BOOL get_group_domain_entries(DOMAIN_GRP *d_grp, DOM_SID *sid, uint32 start_idx,
                                     uint32 *p_num_entries, uint32 max_entries)
{
        fstring sid_str;
        fstring sam_sid_str;
        uint32 num_entries = 0;
        fstring name="Domain Admins";
        fstring comment="Just to make it work !";

        sid_to_string(sid_str, sid);
        sid_to_string(sam_sid_str, &global_sam_sid);

        *p_num_entries = 0;

        fstrcpy(d_grp[0].name, name);
        fstrcpy(d_grp[0].comment, comment);
        d_grp[0].rid = DOMAIN_GROUP_RID_ADMINS;
        d_grp[0].attr=SID_NAME_DOM_GRP;

        fstrcpy(d_grp[1].name, "Domain Users");
        fstrcpy(d_grp[1].comment, "Just to make it work !");
        d_grp[1].rid = DOMAIN_GROUP_RID_USERS;
        d_grp[1].attr=SID_NAME_DOM_GRP;

        num_entries = 2;

        *p_num_entries = num_entries;

        return True;
}

/*******************************************************************
 samr_reply_enum_dom_groups
 Only reply with one group - domain admins. This must be fixed for
 a real PDC. JRA.
 ********************************************************************/

uint32 _samr_enum_dom_groups(pipes_struct *p, SAMR_Q_ENUM_DOM_GROUPS *q_u, SAMR_R_ENUM_DOM_GROUPS *r_u)
{
        DOMAIN_GRP grp[2];
        uint32 num_entries;
        DOM_SID sid;

        r_u->status = NT_STATUS_NOPROBLEMO;

        if (!get_lsa_policy_samr_sid(p, &q_u->pol, &sid))
                return NT_STATUS_INVALID_HANDLE;

        DEBUG(5,("samr_reply_enum_dom_groups: %d\n", __LINE__));

        get_group_domain_entries(grp, &sid, q_u->start_idx, &num_entries, MAX_SAM_ENTRIES);

        make_group_sam_entry_list(p->mem_ctx, &r_u->sam, &r_u->uni_grp_name, num_entries, grp);

        init_samr_r_enum_dom_groups(r_u, q_u->start_idx, num_entries);

        DEBUG(5,("samr_enum_dom_groups: %d\n", __LINE__));

        return r_u->status;
}


/*******************************************************************
 samr_reply_enum_dom_aliases
 ********************************************************************/

uint32 _samr_enum_dom_aliases(pipes_struct *p, SAMR_Q_ENUM_DOM_ALIASES *q_u, SAMR_R_ENUM_DOM_ALIASES *r_u)
{
        DOMAIN_GRP grp[MAX_SAM_ENTRIES];
        uint32 num_entries = 0;
        fstring sid_str;
        DOM_SID sid;
        
        r_u->status = NT_STATUS_NOPROBLEMO;

        if (!get_lsa_policy_samr_sid(p, &q_u->pol, &sid))
                return NT_STATUS_INVALID_HANDLE;

        sid_to_string(sid_str, &sid);
        DEBUG(5,("samr_reply_enum_dom_aliases: sid %s\n", sid_str));

        if (!get_group_alias_entries(grp, &sid, q_u->start_idx, &num_entries, MAX_SAM_ENTRIES))
                return NT_STATUS_ACCESS_DENIED;

        make_group_sam_entry_list(p->mem_ctx, &r_u->sam, &r_u->uni_grp_name, num_entries, grp);

        init_samr_r_enum_dom_aliases(r_u, q_u->start_idx, num_entries);

        DEBUG(5,("samr_enum_dom_aliases: %d\n", __LINE__));

        return r_u->status;
}

/*******************************************************************
 samr_reply_query_dispinfo
 ********************************************************************/

uint32 _samr_query_dispinfo(pipes_struct *p, SAMR_Q_QUERY_DISPINFO *q_u, SAMR_R_QUERY_DISPINFO *r_u)
{
        SAM_USER_INFO_21 pass[MAX_SAM_ENTRIES];
        DOMAIN_GRP grps[MAX_SAM_ENTRIES];
        uint16 acb_mask = ACB_NORMAL;
    uint32 num_entries = 0;
    int orig_num_entries = 0;
    int total_entries = 0;
    uint32 data_size = 0;
        DOM_SID sid;
        BOOL ret;
        SAM_DISPINFO_CTR *ctr;

        DEBUG(5, ("samr_reply_query_dispinfo: %d\n", __LINE__));

        r_u->status = NT_STATUS_NOPROBLEMO;

        if (!get_lsa_policy_samr_sid(p, &q_u->domain_pol, &sid))
                return NT_STATUS_INVALID_HANDLE;

        /* decide how many entries to get depending on the max_entries
           and max_size passed by client */

        if(q_u->max_entries > MAX_SAM_ENTRIES)
                q_u->max_entries = MAX_SAM_ENTRIES;

        /* Get what we need from the password database */
        switch (q_u->switch_level) {
        case 0x2:
                acb_mask = ACB_WSTRUST;
                /* Fall through */
        case 0x1:
        case 0x4:
                become_root();
#if 0
                ret = get_passwd_entries(pass, q_u->start_idx, &total_entries, &num_entries,
                                                MAX_SAM_ENTRIES, acb_mask);
#endif
#if 0
        /*
         * Which should we use here ? JRA.
         */
                ret = get_sampwd_entries(pass, q_u->start_idx, &total_entries, &num_entries,
                                                MAX_SAM_ENTRIES, acb_mask);
#endif
#if 1
                ret = jf_get_sampwd_entries(pass, q_u->start_idx, &total_entries, &num_entries,
                                                MAX_SAM_ENTRIES, acb_mask);
#endif
                unbecome_root();
                if (!ret) {
                        DEBUG(5, ("get_sampwd_entries: failed\n"));
                        return NT_STATUS_ACCESS_DENIED;
                }
                break;
        case 0x3:
        case 0x5:
                ret = get_group_domain_entries(grps, &sid, q_u->start_idx, &num_entries, MAX_SAM_ENTRIES);
                if (!ret)
                        return NT_STATUS_ACCESS_DENIED;
                break;
        default:
                DEBUG(0,("_samr_query_dispinfo: Unknown info level (%u)\n", (unsigned int)q_u->switch_level ));
                return NT_STATUS_INVALID_INFO_CLASS;
        }


        if (num_entries > q_u->max_entries)
                num_entries = q_u->max_entries;

        if (num_entries > MAX_SAM_ENTRIES) {
                num_entries = MAX_SAM_ENTRIES;
                DEBUG(5, ("limiting number of entries to %d\n", num_entries));
        }

        /* Ensure password info is never given out here. PARANOIA... JRA */
        samr_clear_passwd_fields(pass, num_entries);

        data_size = q_u->max_size;
        orig_num_entries = num_entries;

        ctr = (SAM_DISPINFO_CTR *)talloc(p->mem_ctx,sizeof(SAM_DISPINFO_CTR));

        /* Now create reply structure */
        switch (q_u->switch_level) {
        case 0x1:
                ctr->sam.info1 = (SAM_DISPINFO_1 *)talloc(p->mem_ctx,num_entries*sizeof(SAM_DISPINFO_1));
                init_sam_dispinfo_1(ctr->sam.info1, &num_entries, &data_size, q_u->start_idx, pass);
                break;
        case 0x2:
                ctr->sam.info2 = (SAM_DISPINFO_2 *)talloc(p->mem_ctx,num_entries*sizeof(SAM_DISPINFO_2));
                init_sam_dispinfo_2(ctr->sam.info2, &num_entries, &data_size, q_u->start_idx, pass);
                break;
        case 0x3:
                ctr->sam.info3 = (SAM_DISPINFO_3 *)talloc(p->mem_ctx,num_entries*sizeof(SAM_DISPINFO_3));
                init_sam_dispinfo_3(ctr->sam.info3, &num_entries, &data_size, q_u->start_idx, grps);
                break;
        case 0x4:
                ctr->sam.info4 = (SAM_DISPINFO_4 *)talloc(p->mem_ctx,num_entries*sizeof(SAM_DISPINFO_4));
                init_sam_dispinfo_4(ctr->sam.info4, &num_entries, &data_size, q_u->start_idx, pass);
                break;
        case 0x5:
                ctr->sam.info5 = (SAM_DISPINFO_5 *)talloc(p->mem_ctx,num_entries*sizeof(SAM_DISPINFO_5));
                init_sam_dispinfo_5(ctr->sam.info5, &num_entries, &data_size, q_u->start_idx, grps);
                break;
        default:
                ctr->sam.info = NULL;
                return NT_STATUS_INVALID_INFO_CLASS;
        }

        DEBUG(5, ("_samr_query_dispinfo: %d\n", __LINE__));

        init_samr_r_query_dispinfo(r_u, num_entries, data_size, q_u->switch_level, ctr, r_u->status);

        if (num_entries < orig_num_entries) {
                return STATUS_MORE_ENTRIES;
        }

        return r_u->status;
}

/*******************************************************************
 samr_reply_query_aliasinfo
 ********************************************************************/

uint32 _samr_query_aliasinfo(pipes_struct *p, SAMR_Q_QUERY_ALIASINFO *q_u, SAMR_R_QUERY_ALIASINFO *r_u)
{
        fstring alias_desc = "Local Unix group";
        fstring alias="";
        enum SID_NAME_USE type;
        uint32 alias_rid;
        struct samr_info *info = NULL;

        r_u->status = NT_STATUS_NOPROBLEMO;

        DEBUG(5,("_samr_query_aliasinfo: %d\n", __LINE__));

        /* find the policy handle.  open a policy on it. */
        if (!find_policy_by_hnd(p, &q_u->pol, (void **)&info))
                return NT_STATUS_INVALID_HANDLE;

        alias_rid = get_lsa_policy_samr_rid(info);
        if(alias_rid == 0xffffffff)
                return NT_STATUS_NO_SUCH_ALIAS;

        if(!local_lookup_rid(alias_rid, alias, &type))
                return NT_STATUS_NO_SUCH_ALIAS;

        switch (q_u->switch_level) {
        case 3:
                r_u->ptr = 1;
                r_u->ctr.switch_value1 = 3;
                init_samr_alias_info3(&r_u->ctr.alias.info3, alias_desc);
                break;
        default:
                return NT_STATUS_INVALID_INFO_CLASS;
        }

        DEBUG(5,("_samr_query_aliasinfo: %d\n", __LINE__));

        return r_u->status;
}

#if 0
/*******************************************************************
 samr_reply_lookup_ids
 ********************************************************************/

 uint32 _samr_lookup_ids(pipes_struct *p, SAMR_Q_LOOKUP_IDS *q_u, SAMR_R_LOOKUP_IDS *r_u)
{
    uint32 rid[MAX_SAM_ENTRIES];
    int num_rids = q_u->num_sids1;

    r_u->status = NT_STATUS_NOPROBLEMO;

    DEBUG(5,("_samr_lookup_ids: %d\n", __LINE__));

    if (num_rids > MAX_SAM_ENTRIES) {
        num_rids = MAX_SAM_ENTRIES;
        DEBUG(5,("_samr_lookup_ids: truncating entries to %d\n", num_rids));
    }

#if 0
    int i;
    SMB_ASSERT_ARRAY(q_u->uni_user_name, num_rids);

    for (i = 0; i < num_rids && status == 0; i++)
    {
        struct sam_passwd *sam_pass;
        fstring user_name;


        fstrcpy(user_name, unistrn2(q_u->uni_user_name[i].buffer,
                                    q_u->uni_user_name[i].uni_str_len));

        /* find the user account */
        become_root();
        sam_pass = get_smb21pwd_entry(user_name, 0);
        unbecome_root();

        if (sam_pass == NULL)
        {
            status = 0xC0000000 | NT_STATUS_NO_SUCH_USER;
            rid[i] = 0;
        }
        else
        {
            rid[i] = sam_pass->user_rid;
        }
    }
#endif

    num_rids = 1;
    rid[0] = BUILTIN_ALIAS_RID_USERS;

    init_samr_r_lookup_ids(&r_u, num_rids, rid, NT_STATUS_NOPROBLEMO);

    DEBUG(5,("_samr_lookup_ids: %d\n", __LINE__));

    return r_u->status;
}
#endif

/*******************************************************************
 _samr_lookup_names
 ********************************************************************/

uint32 _samr_lookup_names(pipes_struct *p, SAMR_Q_LOOKUP_NAMES *q_u, SAMR_R_LOOKUP_NAMES *r_u)
{
    uint32 rid[MAX_SAM_ENTRIES];
    enum SID_NAME_USE type[MAX_SAM_ENTRIES];
    int i;
    int num_rids = q_u->num_names1;
    DOM_SID pol_sid;

    r_u->status = NT_STATUS_NOPROBLEMO;

    DEBUG(5,("_samr_lookup_names: %d\n", __LINE__));

    ZERO_ARRAY(rid);
    ZERO_ARRAY(type);

    if (!get_lsa_policy_samr_sid(p, &q_u->pol, &pol_sid)) {
        init_samr_r_lookup_names(p->mem_ctx, r_u, 0, NULL, NULL, NT_STATUS_OBJECT_TYPE_MISMATCH);
        return r_u->status;
    }

    if (num_rids > MAX_SAM_ENTRIES) {
        num_rids = MAX_SAM_ENTRIES;
        DEBUG(5,("_samr_lookup_names: truncating entries to %d\n", num_rids));
    }

    SMB_ASSERT_ARRAY(q_u->uni_name, num_rids);

    for (i = 0; i < num_rids; i++) {
        fstring name;

        r_u->status = NT_STATUS_NONE_MAPPED;

        rid [i] = 0xffffffff;
        type[i] = SID_NAME_UNKNOWN;

        fstrcpy(name, dos_unistrn2(q_u->uni_name[i].buffer, q_u->uni_name[i].uni_str_len));

        if(sid_equal(&pol_sid, &global_sam_sid)) {
            DOM_SID sid;
            if(local_lookup_name(global_myname, name, &sid, &type[i])) {
                sid_split_rid( &sid, &rid[i]);
                r_u->status = NT_STATUS_NOPROBLEMO;
            }
        }
    }

    init_samr_r_lookup_names(p->mem_ctx, r_u, num_rids, rid, (uint32 *)type, r_u->status);

    DEBUG(5,("_samr_lookup_names: %d\n", __LINE__));

    return r_u->status;
}

/*******************************************************************
 _samr_chgpasswd_user
 ********************************************************************/

uint32 _samr_chgpasswd_user(pipes_struct *p, SAMR_Q_CHGPASSWD_USER *q_u, SAMR_R_CHGPASSWD_USER *r_u)
{
    fstring user_name;
    fstring wks;

    DEBUG(5,("_samr_chgpasswd_user: %d\n", __LINE__));

    r_u->status = NT_STATUS_NOPROBLEMO;

    fstrcpy(user_name, dos_unistrn2(q_u->uni_user_name.buffer, q_u->uni_user_name.uni_str_len));
    fstrcpy(wks      , dos_unistrn2(q_u->uni_dest_host.buffer, q_u->uni_dest_host.uni_str_len));

    DEBUG(5,("samr_chgpasswd_user: user: %s wks: %s\n", user_name, wks));

        /*
         * Pass the user through the NT -> unix user mapping
         * function.
         */
 
        (void)map_username(user_name);
 
        /*
         * Do any UNIX username case mangling.
         */
        (void)Get_Pwnam( user_name, True);

    if (!pass_oem_change(user_name, q_u->lm_newpass.pass, q_u->lm_oldhash.hash,
                         q_u->nt_newpass.pass, q_u->nt_oldhash.hash))
        r_u->status = NT_STATUS_WRONG_PASSWORD;

    init_samr_r_chgpasswd_user(r_u, r_u->status);

    DEBUG(5,("_samr_chgpasswd_user: %d\n", __LINE__));

    return r_u->status;
}

/*******************************************************************
makes a SAMR_R_LOOKUP_RIDS structure.
********************************************************************/

static BOOL make_samr_lookup_rids(TALLOC_CTX *ctx, uint32 num_names, fstring names[],
            UNIHDR **pp_hdr_name, UNISTR2 **pp_uni_name)
{
        uint32 i;
        UNIHDR *hdr_name=NULL;
        UNISTR2 *uni_name=NULL;

        *pp_uni_name = NULL;
        *pp_hdr_name = NULL;

        if (num_names != 0) {
                hdr_name = (UNIHDR *)talloc(ctx, sizeof(UNIHDR)*num_names);
                if (hdr_name == NULL)
                        return False;

                uni_name = (UNISTR2 *)talloc(ctx,sizeof(UNISTR2)*num_names);
                if (uni_name == NULL)
                        return False;
        }

        for (i = 0; i < num_names; i++) {
                int len = names[i] != NULL ? strlen(names[i]) : 0;
                DEBUG(10, ("names[%d]:%s\n", i, names[i]));
                init_uni_hdr(&hdr_name[i], len);
                init_unistr2(&uni_name[i], names[i], len);
        }

        *pp_uni_name = uni_name;
        *pp_hdr_name = hdr_name;

        return True;
}

/*******************************************************************
 _samr_lookup_rids
 ********************************************************************/

uint32 _samr_lookup_rids(pipes_struct *p, SAMR_Q_LOOKUP_RIDS *q_u, SAMR_R_LOOKUP_RIDS *r_u)
{
        fstring group_names[MAX_SAM_ENTRIES];
        uint32 group_attrs[MAX_SAM_ENTRIES];
        UNIHDR *hdr_name = NULL;
        UNISTR2 *uni_name = NULL;
        DOM_SID pol_sid;
        int num_rids = q_u->num_rids1;
        int i;

        r_u->status = NT_STATUS_NOPROBLEMO;

        DEBUG(5,("_samr_lookup_rids: %d\n", __LINE__));

        /* find the policy handle.  open a policy on it. */
        if (!get_lsa_policy_samr_sid(p, &q_u->pol, &pol_sid))
                return NT_STATUS_INVALID_HANDLE;

        if (num_rids > MAX_SAM_ENTRIES) {
                num_rids = MAX_SAM_ENTRIES;
                DEBUG(5,("_samr_lookup_rids: truncating entries to %d\n", num_rids));
        }

        r_u->status = NT_STATUS_NONE_MAPPED;

        for (i = 0; i < num_rids; i++) {
                fstring tmpname;
                fstring domname;
                DOM_SID sid;
                enum SID_NAME_USE type;

                group_attrs[i] = SID_NAME_UNKNOWN;
                *group_names[i] = '\0';

                if (sid_equal(&pol_sid, &global_sam_sid)) {
                        sid_copy(&sid, &pol_sid);
                        sid_append_rid(&sid, q_u->rid[i]);

                        if (lookup_sid(&sid, domname, tmpname, &type)) {
                                r_u->status = NT_STATUS_NOPROBLEMO;
                                group_attrs[i] = (uint32)type;
                                fstrcpy(group_names[i],tmpname);
                        }
                }
        }

        if(!make_samr_lookup_rids(p->mem_ctx, num_rids, group_names, &hdr_name, &uni_name))
                return NT_STATUS_NO_MEMORY;

        init_samr_r_lookup_rids(r_u, num_rids, hdr_name, uni_name, group_attrs);

        DEBUG(5,("_samr_lookup_rids: %d\n", __LINE__));

        return r_u->status;
}

/*******************************************************************
 _api_samr_open_user. Safe - gives out no passwd info.
 ********************************************************************/

uint32 _api_samr_open_user(pipes_struct *p, SAMR_Q_OPEN_USER *q_u, SAMR_R_OPEN_USER *r_u)
{
    SAM_ACCOUNT *sampass;
    DOM_SID sid;
    POLICY_HND domain_pol = q_u->domain_pol;
    uint32 user_rid = q_u->user_rid;
    POLICY_HND *user_pol = &r_u->user_pol;
        struct samr_info *info = NULL;

    r_u->status = NT_STATUS_NO_PROBLEMO;

    /* find the domain policy handle. */
    if (!find_policy_by_hnd(p, &domain_pol, NULL))
        return NT_STATUS_INVALID_HANDLE;

    become_root();
    sampass = pdb_getsampwrid(user_rid);
    unbecome_root();

    /* check that the RID exists in our domain. */
    if (sampass == NULL)
        return NT_STATUS_NO_SUCH_USER;

        samr_clear_sam_passwd(sampass);

    /* Get the domain SID stored in the domain policy */
    if(!get_lsa_policy_samr_sid(p, &domain_pol, &sid))
        return NT_STATUS_INVALID_HANDLE;

    /* append the user's RID to it */
    if(!sid_append_rid(&sid, user_rid))
        return NT_STATUS_NO_SUCH_USER;

    /* associate the user's SID with the new handle. */
    if ((info = (struct samr_info *)malloc(sizeof(struct samr_info))) == NULL)
        return NT_STATUS_NO_MEMORY;

    ZERO_STRUCTP(info);
    info->sid = sid;

    /* get a (unique) handle.  open a policy on it. */
    if (!create_policy_hnd(p, user_pol, free_samr_info, (void *)info))
        return NT_STATUS_OBJECT_NAME_NOT_FOUND;

    return r_u->status;
}

/*************************************************************************
 get_user_info_10. Safe. Only gives out acb bits.
 *************************************************************************/

static BOOL get_user_info_10(SAM_USER_INFO_10 *id10, uint32 user_rid)
{
    SAM_ACCOUNT *smbpass;

    if (!pdb_rid_is_user(user_rid)) {
        DEBUG(4,("RID 0x%x is not a user RID\n", user_rid));
        return False;
    }

    become_root();
    smbpass = pdb_getsampwrid(user_rid);
    unbecome_root();

    if (smbpass == NULL) {
        DEBUG(4,("User 0x%x not found\n", user_rid));
        return False;
    }

    DEBUG(3,("User:[%s]\n", pdb_get_username(smbpass) ));

    init_sam_user_info10(id10, pdb_get_acct_ctrl(smbpass) );

    return True;
}

/*************************************************************************
 get_user_info_12. OK - this is the killer as it gives out password info.
 Ensure that this is only allowed on an encrypted connection with a root
 user. JRA. 
 *************************************************************************/

static uint32 get_user_info_12(pipes_struct *p, SAM_USER_INFO_12 * id12, uint32 user_rid)
{
    SAM_ACCOUNT *smbpass;

        if (!p->ntlmssp_auth_validated)
                return NT_STATUS_ACCESS_DENIED;

        if (!(p->ntlmssp_chal_flags & NTLMSSP_NEGOTIATE_SIGN) || !(p->ntlmssp_chal_flags & NTLMSSP_NEGOTIATE_SEAL))
                return NT_STATUS_ACCESS_DENIED;

        /*
         * Do *NOT* do become_root()/unbecome_root() here ! JRA.
         */

    smbpass = pdb_getsampwrid(user_rid);

        if (smbpass == NULL) {
                DEBUG(4, ("User 0x%x not found\n", user_rid));
                return (geteuid() == (uid_t)0) ? NT_STATUS_NO_SUCH_USER : NT_STATUS_ACCESS_DENIED;
        }

    DEBUG(3,("User:[%s] 0x%x\n", pdb_get_username(smbpass), pdb_get_acct_ctrl(smbpass) ));

        if ( pdb_get_acct_ctrl(smbpass) & ACB_DISABLED)
        return NT_STATUS_ACCOUNT_DISABLED;

        init_sam_user_info12(id12, pdb_get_lanman_passwd(smbpass), pdb_get_nt_passwd(smbpass));

        return NT_STATUS_NOPROBLEMO;
}

/*************************************************************************
 get_user_info_21
 *************************************************************************/

static BOOL get_user_info_21(SAM_USER_INFO_21 *id21, uint32 user_rid)
{
    SAM_ACCOUNT *sampass;

    if (!pdb_rid_is_user(user_rid)) {
        DEBUG(4,("RID 0x%x is not a user RID\n", user_rid));
        return False;
    }

    become_root();
    sampass = pdb_getsampwrid(user_rid);
    unbecome_root();

    if (sampass == NULL) {
        DEBUG(4,("User 0x%x not found\n", user_rid));
        return False;
    }

        samr_clear_sam_passwd(sampass);

    DEBUG(3,("User:[%s]\n",  pdb_get_username(sampass) ));

        init_sam_user_info21A(id21, sampass);

    return True;
}

/*******************************************************************
 _samr_query_userinfo
 ********************************************************************/

uint32 _samr_query_userinfo(pipes_struct *p, SAMR_Q_QUERY_USERINFO *q_u, SAMR_R_QUERY_USERINFO *r_u)
{
        SAM_USERINFO_CTR *ctr;
        uint32 rid = 0;
        struct samr_info *info = NULL;

        r_u->status=NT_STATUS_NO_PROBLEMO;

        /* search for the handle */
        if (!find_policy_by_hnd(p, &q_u->pol, (void **)&info))
                return NT_STATUS_INVALID_HANDLE;

        /* find the user's rid */
        if ((rid = get_lsa_policy_samr_rid(info)) == 0xffffffff)
                return NT_STATUS_OBJECT_TYPE_MISMATCH;

        DEBUG(5,("_samr_query_userinfo: rid:0x%x\n", rid));

        ctr = (SAM_USERINFO_CTR *)talloc(p->mem_ctx, sizeof(SAM_USERINFO_CTR));
        if (!ctr)
                return NT_STATUS_NO_MEMORY;

        ZERO_STRUCTP(ctr);

        /* ok!  user info levels (lots: see MSDEV help), off we go... */
        ctr->switch_value = q_u->switch_value;

        switch (q_u->switch_value) {
        case 0x10:
                ctr->info.id10 = (SAM_USER_INFO_10 *)talloc(p->mem_ctx, sizeof(SAM_USER_INFO_10));
                if (ctr->info.id10 == NULL)
                        return NT_STATUS_NO_MEMORY;

                if (!get_user_info_10(ctr->info.id10, rid))
                        return NT_STATUS_NO_SUCH_USER;
                break;

#if 0
/* whoops - got this wrong.  i think.  or don't understand what's happening. */
        case 0x11:
        {
            NTTIME expire;
            info = (void *)&id11;

            expire.low = 0xffffffff;
            expire.high = 0x7fffffff;

            ctr->info.id = (SAM_USER_INFO_11 *)talloc(p->mem_ctx,
                                    sizeof
                                    (*ctr->
                                     info.
                                     id11));
            init_sam_user_info11(ctr->info.id11, &expire,
                         "BROOKFIELDS$",    /* name */
                         0x03ef,    /* user rid */
                         0x201, /* group rid */
                         0x0080);   /* acb info */

            break;
        }
#endif

        case 0x12:
                ctr->info.id12 = (SAM_USER_INFO_12 *)talloc(p->mem_ctx, sizeof(SAM_USER_INFO_12));
                if (ctr->info.id12 == NULL)
                        return NT_STATUS_NO_MEMORY;

                if ((r_u->status = get_user_info_12(p, ctr->info.id12, rid)) != NT_STATUS_NOPROBLEMO)
                        return r_u->status;
                break;

        case 21:
                ctr->info.id21 = (SAM_USER_INFO_21 *)talloc(p->mem_ctx,sizeof(SAM_USER_INFO_21));
                if (ctr->info.id21 == NULL)
                        return NT_STATUS_NO_MEMORY;
                if (!get_user_info_21(ctr->info.id21, rid))
                        return NT_STATUS_NO_SUCH_USER;
                break;

        default:
                return NT_STATUS_INVALID_INFO_CLASS;
        }

        init_samr_r_query_userinfo(r_u, ctr, r_u->status);

        DEBUG(5,("_samr_query_userinfo: %d\n", __LINE__));

        return r_u->status;
}

/*******************************************************************
 samr_reply_query_usergroups
 ********************************************************************/

uint32 _samr_query_usergroups(pipes_struct *p, SAMR_Q_QUERY_USERGROUPS *q_u, SAMR_R_QUERY_USERGROUPS *r_u)
{
    struct sam_passwd *sam_pass;
    DOM_GID *gids = NULL;
    int num_groups = 0;
    pstring groups;
    uint32 rid;
        struct samr_info *info = NULL;

    r_u->status = NT_STATUS_NO_PROBLEMO;

    DEBUG(5,("_samr_query_usergroups: %d\n", __LINE__));

    /* find the policy handle.  open a policy on it. */
    if (!find_policy_by_hnd(p, &q_u->pol, (void **)&info))
        return NT_STATUS_INVALID_HANDLE;

    /* find the user's rid */
    if ((rid = get_lsa_policy_samr_rid(info)) == 0xffffffff)
        return NT_STATUS_OBJECT_TYPE_MISMATCH;

    become_root();
    sam_pass = pdb_getsampwrid(rid);
    unbecome_root();

    if (sam_pass == NULL)
        return NT_STATUS_NO_SUCH_USER;

        samr_clear_sam_passwd(sam_pass);

    get_domain_user_groups(groups, pdb_get_username(sam_pass));
    gids = NULL;
    num_groups = make_dom_gids(p->mem_ctx, groups, &gids);

    /* construct the response.  lkclXXXX: gids are not copied! */
    init_samr_r_query_usergroups(r_u, num_groups, gids, r_u->status);

    DEBUG(5,("_samr_query_usergroups: %d\n", __LINE__));

    return r_u->status;
}

/*******************************************************************
 _samr_query_dom_info
 ********************************************************************/

uint32 _samr_query_dom_info(pipes_struct *p, SAMR_Q_QUERY_DOMAIN_INFO *q_u, SAMR_R_QUERY_DOMAIN_INFO *r_u)
{
    SAM_UNK_CTR *ctr;

        if ((ctr = (SAM_UNK_CTR *)talloc(p->mem_ctx, sizeof(SAM_UNK_CTR))) == NULL)
                return NT_STATUS_NO_MEMORY;

    ZERO_STRUCTP(ctr);

    r_u->status = NT_STATUS_NO_PROBLEMO;

    DEBUG(5,("_samr_query_dom_info: %d\n", __LINE__));

    /* find the policy handle.  open a policy on it. */
    if (!find_policy_by_hnd(p, &q_u->domain_pol, NULL))
        return NT_STATUS_INVALID_HANDLE;

    switch (q_u->switch_value) {
        case 0x01:
            init_unk_info1(&ctr->info.inf1);
            break;
        case 0x02:
                        /* The time call below is to get a sequence number for the sam. FIXME !!! JRA. */
            init_unk_info2(&ctr->info.inf2, global_myworkgroup, global_myname, (uint32) time(NULL));
            break;
        case 0x03:
            init_unk_info3(&ctr->info.inf3);
            break;
        case 0x06:
            init_unk_info6(&ctr->info.inf6);
            break;
        case 0x07:
            init_unk_info7(&ctr->info.inf7);
            break;
        case 0x0c:
            init_unk_info12(&ctr->info.inf12);
            break;
        default:
            return NT_STATUS_INVALID_INFO_CLASS;
    }

    init_samr_r_query_dom_info(r_u, q_u->switch_value, ctr, NT_STATUS_NOPROBLEMO);

    DEBUG(5,("_samr_query_dom_info: %d\n", __LINE__));

    return r_u->status;
}

/*******************************************************************
 _api_samr_create_user
 ********************************************************************/

uint32 _api_samr_create_user(pipes_struct *p, SAMR_Q_CREATE_USER *q_u, SAMR_R_CREATE_USER *r_u)
{
    SAM_ACCOUNT *sam_pass;
    fstring mach_acct;
    pstring err_str;
    pstring msg_str;
    int local_flags=0;
    DOM_SID sid;
    pstring add_script;
    POLICY_HND dom_pol = q_u->domain_pol;
    UNISTR2 user_account = q_u->uni_name;
    uint16 acb_info = q_u->acb_info;
    POLICY_HND *user_pol = &r_u->user_pol;
        struct samr_info *info = NULL;

    /* find the policy handle.  open a policy on it. */
    if (!find_policy_by_hnd(p, &dom_pol, NULL))
        return NT_STATUS_INVALID_HANDLE;

    /* find the machine account: tell the caller if it exists.
       lkclXXXX i have *no* idea if this is a problem or not
       or even if you are supposed to construct a different
       reply if the account already exists...
     */

    fstrcpy(mach_acct, dos_unistrn2(user_account.buffer, user_account.uni_str_len));
    strlower(mach_acct);

    become_root();
    sam_pass = pdb_getsampwnam(mach_acct);
    unbecome_root();
    if (sam_pass != NULL) {
        /* machine account exists: say so */
        return NT_STATUS_USER_EXISTS;
    }

    local_flags=LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_SET_NO_PASSWORD;
    local_flags|= (acb_info & ACB_WSTRUST) ? LOCAL_TRUST_ACCOUNT:0;

    /*
     * NB. VERY IMPORTANT ! This call must be done as the current pipe user,
     * *NOT* surrounded by a become_root()/unbecome_root() call. This ensures
     * that only people with write access to the smbpasswd file will be able
     * to create a user. JRA.
     */

    /*
     * add the user in the /etc/passwd file or the unix authority system.
     * We don't check if the smb_create_user() function succed or not for 2 reasons:
     * a) local_password_change() checks for us if the /etc/passwd account really exists
     * b) smb_create_user() would return an error if the account already exists
     * and as it could return an error also if it can't create the account, it would be tricky.
     *
     * So we go the easy way, only check after if the account exists.
     * JFM (2/3/2001), to clear any possible bad understanding (-:
     */

    pstrcpy(add_script, lp_adduser_script());

    if(*add_script)
        smb_create_user(mach_acct, NULL);

    /* add the user in the smbpasswd file or the Samba authority database */
    if (!local_password_change(mach_acct, local_flags, NULL, err_str,
         sizeof(err_str), msg_str, sizeof(msg_str)))
    {
        DEBUG(0, ("%s\n", err_str));
        close_policy_hnd(p, user_pol);
        return NT_STATUS_ACCESS_DENIED;
    }

    become_root();
    sam_pass = pdb_getsampwnam(mach_acct);
    unbecome_root();
    if (sam_pass == NULL) {
        /* account doesn't exist: say so */
        close_policy_hnd(p, user_pol);
        return NT_STATUS_ACCESS_DENIED;
    }

    /* Get the domain SID stored in the domain policy */
    if(!get_lsa_policy_samr_sid(p, &dom_pol, &sid)) {
        close_policy_hnd(p, user_pol);
        return NT_STATUS_INVALID_HANDLE;
    }

    /* append the user's RID to it */
    if(!sid_append_rid(&sid, pdb_get_user_rid(sam_pass) )) {
        close_policy_hnd(p, user_pol);
        return NT_STATUS_NO_SUCH_USER;
    }

    /* associate the user's SID with the new handle. */
    if ((info = (struct samr_info *)malloc(sizeof(struct samr_info))) == NULL)
        return NT_STATUS_NO_MEMORY;

    ZERO_STRUCTP(info);
    info->sid = sid;

    /* get a (unique) handle.  open a policy on it. */
    if (!create_policy_hnd(p, user_pol, free_samr_info, (void *)info))
        return NT_STATUS_OBJECT_NAME_NOT_FOUND;

    r_u->user_rid=sam_pass->user_rid;
    r_u->unknown_0 = 0x000703ff;

    return NT_STATUS_NO_PROBLEMO;
}

/*******************************************************************
 samr_reply_connect_anon
 ********************************************************************/

uint32 _samr_connect_anon(pipes_struct *p, SAMR_Q_CONNECT_ANON *q_u, SAMR_R_CONNECT_ANON *r_u)
{
        struct samr_info *info = NULL;

    /* set up the SAMR connect_anon response */

    r_u->status = NT_STATUS_NO_PROBLEMO;

    /* associate the user's SID with the new handle. */
    if ((info = (struct samr_info *)malloc(sizeof(struct samr_info))) == NULL)
        return NT_STATUS_NO_MEMORY;

    ZERO_STRUCTP(info);
    info->status = q_u->unknown_0;

    /* get a (unique) handle.  open a policy on it. */
    if (!create_policy_hnd(p, &r_u->connect_pol, free_samr_info, (void *)info))
        return NT_STATUS_OBJECT_NAME_NOT_FOUND;

    return r_u->status;
}

/*******************************************************************
 samr_reply_connect
 ********************************************************************/

uint32 _samr_connect(pipes_struct *p, SAMR_Q_CONNECT *q_u, SAMR_R_CONNECT *r_u)
{
        struct samr_info *info = NULL;

    DEBUG(5,("_samr_connect: %d\n", __LINE__));

    r_u->status = NT_STATUS_NO_PROBLEMO;

    /* associate the user's SID with the new handle. */
    if ((info = (struct samr_info *)malloc(sizeof(struct samr_info))) == NULL)
        return NT_STATUS_NO_MEMORY;

    ZERO_STRUCTP(info);
    info->status = q_u->access_mask;

    /* get a (unique) handle.  open a policy on it. */
    if (!create_policy_hnd(p, &r_u->connect_pol, free_samr_info, (void *)info))
        return NT_STATUS_OBJECT_NAME_NOT_FOUND;

    DEBUG(5,("_samr_connect: %d\n", __LINE__));

    return r_u->status;
}

/**********************************************************************
 api_samr_lookup_domain
 **********************************************************************/

uint32 _samr_lookup_domain(pipes_struct *p, SAMR_Q_LOOKUP_DOMAIN *q_u, SAMR_R_LOOKUP_DOMAIN *r_u)
{
    r_u->status = NT_STATUS_NO_PROBLEMO;

    if (!find_policy_by_hnd(p, &q_u->connect_pol, NULL))
        return NT_STATUS_INVALID_HANDLE;

    /* assume the domain name sent is our global_myname and
       send global_sam_sid */
    init_samr_r_lookup_domain(r_u, &global_sam_sid, r_u->status);

    return r_u->status;
}

/******************************************************************
makes a SAMR_R_ENUM_DOMAINS structure.
********************************************************************/

static BOOL make_enum_domains(TALLOC_CTX *ctx, SAM_ENTRY **pp_sam,
                        UNISTR2 **pp_uni_name, uint32 num_sam_entries, fstring doms[])
{
        uint32 i;
        SAM_ENTRY *sam;
        UNISTR2 *uni_name;

        DEBUG(5, ("make_enum_domains\n"));

        *pp_sam = NULL;
        *pp_uni_name = NULL;

        if (num_sam_entries == 0)
                return True;

        sam = (SAM_ENTRY *)talloc(ctx, sizeof(SAM_ENTRY)*num_sam_entries);
        uni_name = (UNISTR2 *)talloc(ctx, sizeof(UNISTR2)*num_sam_entries);

        if (sam == NULL || uni_name == NULL)
                return False;

        for (i = 0; i < num_sam_entries; i++) {
                int len = doms[i] != NULL ? strlen(doms[i]) : 0;

                init_sam_entry(&sam[i], len, 0);
                init_unistr2(&uni_name[i], doms[i], len);
        }

        *pp_sam = sam;
        *pp_uni_name = uni_name;

        return True;
}

/**********************************************************************
 api_samr_enum_domains
 **********************************************************************/

uint32 _samr_enum_domains(pipes_struct *p, SAMR_Q_ENUM_DOMAINS *q_u, SAMR_R_ENUM_DOMAINS *r_u)
{
        uint32 num_entries = 2;
        fstring dom[2];

        r_u->status = NT_STATUS_NO_PROBLEMO;

        fstrcpy(dom[0],global_myworkgroup);
        fstrcpy(dom[1],"Builtin");

        if (!make_enum_domains(p->mem_ctx, &r_u->sam, &r_u->uni_dom_name, num_entries, dom))
                return NT_STATUS_NO_MEMORY;

        init_samr_r_enum_domains(r_u, q_u->start_idx + num_entries, num_entries);

        return r_u->status;
}

/*******************************************************************
 api_samr_open_alias
 ********************************************************************/

uint32 _api_samr_open_alias(pipes_struct *p, SAMR_Q_OPEN_ALIAS *q_u, SAMR_R_OPEN_ALIAS *r_u)
{
        DOM_SID sid;
        POLICY_HND domain_pol = q_u->dom_pol;
        uint32 alias_rid = q_u->rid_alias;
        POLICY_HND *alias_pol = &r_u->pol;
        struct samr_info *info = NULL;

        r_u->status = NT_STATUS_NO_PROBLEMO;

        /* get the domain policy. */
        if (!find_policy_by_hnd(p, &domain_pol, NULL))
                return NT_STATUS_INVALID_HANDLE;

        /* Get the domain SID stored in the domain policy */
        if(!get_lsa_policy_samr_sid(p, &domain_pol, &sid))
                return NT_STATUS_INVALID_HANDLE;

        /* append the alias' RID to it */
        if(!sid_append_rid(&sid, alias_rid))
                return NT_STATUS_NO_SUCH_USER;

        /*
         * we should check if the rid really exist !!!
         * JFM.
         */

    /* associate the user's SID with the new handle. */
    if ((info = (struct samr_info *)malloc(sizeof(struct samr_info))) == NULL)
        return NT_STATUS_NO_MEMORY;

    ZERO_STRUCTP(info);
    info->sid = sid;

        /* get a (unique) handle.  open a policy on it. */
        if (!create_policy_hnd(p, alias_pol, free_samr_info, (void *)info))
                return NT_STATUS_OBJECT_NAME_NOT_FOUND;

        return r_u->status;
}

/*******************************************************************
 set_user_info_10
 ********************************************************************/

static BOOL set_user_info_10(const SAM_USER_INFO_10 *id10, uint32 rid)
{
        SAM_ACCOUNT *pwd = pdb_getsampwrid(rid);

        if (id10 == NULL) {
                DEBUG(5, ("set_user_info_10: NULL id10\n"));
                return False;
        }

        pwd = pdb_getsampwrid(rid);
        if (!pwd)
                return False;

        pdb_set_acct_ctrl(pwd, id10->acb_info);

        if(!pdb_update_sam_account(pwd, True))
                return False;

        return True;
}

/*******************************************************************
 set_user_info_12
 ********************************************************************/

static BOOL set_user_info_12(SAM_USER_INFO_12 *id12, uint32 rid)
{
        SAM_ACCOUNT *pwd = pdb_getsampwrid(rid);
 
        if (pwd == NULL)
                return False;
 
        if (id12 == NULL) {
                DEBUG(2, ("set_user_info_12: id12 is NULL\n"));
                return False;
        }
 
        pdb_set_lanman_passwd (pwd, id12->lm_pwd);
        pdb_set_nt_passwd     (pwd, id12->nt_pwd);
 
        if(!pdb_update_sam_account(pwd, True))
                return False;
 
        return True;
}

/*******************************************************************
 set_user_info_21
 ********************************************************************/

static BOOL set_user_info_21(SAM_USER_INFO_21 *id21, uint32 rid)
{
        SAM_ACCOUNT *pwd = pdb_getsampwrid(rid);
        SAM_ACCOUNT new_pwd;
 
        if (id21 == NULL) {
                DEBUG(5, ("set_user_info_21: NULL id21\n"));
                return False;
        }
 
        if (pwd == NULL)
                return False;
 
        /* we make a copy so that we can modify stuff */
        ZERO_STRUCT(new_pwd);
        copy_sam_passwd(&new_pwd, pwd);
        copy_id21_to_sam_passwd(&new_pwd, id21);
 
        /*
         * The funny part about the previous two calls is
         * that pwd still has the password hashes from the
         * passdb entry.  These have not been updated from
         * id21.  I don't know if they need to be set.    --jerry
         */
 
        /* write the change out */
        if(!pdb_update_sam_account(&new_pwd, True))
                return False;
 
        return True;
}

/*******************************************************************
 set_user_info_23
 ********************************************************************/

static BOOL set_user_info_23(SAM_USER_INFO_23 *id23, uint32 rid)
{
    SAM_ACCOUNT *pwd = pdb_getsampwrid(rid);
    SAM_ACCOUNT new_pwd;
    uint8 nt_hash[16];
    uint8 lm_hash[16];
    pstring buf;
    uint32 len;
        uint16 acct_ctrl;
 
    if (id23 == NULL) {
        DEBUG(5, ("set_user_info_23: NULL id23\n"));
        return False;
    }
 
    if (pwd == NULL)
        return False;
 
    acct_ctrl = pdb_get_acct_ctrl(pwd);

    ZERO_STRUCT (new_pwd);
    copy_sam_passwd(&new_pwd, pwd);
    copy_id23_to_sam_passwd(&new_pwd, id23);
 
    if (!decode_pw_buffer((char*)id23->pass, buf, 256, &len, nt_hash, lm_hash))
        return False;
  
    pdb_set_lanman_passwd (&new_pwd, lm_hash);
    pdb_set_nt_passwd     (&new_pwd, nt_hash);
 
        /* if it's a trust account, don't update /etc/passwd */
        if ( ( (acct_ctrl &  ACB_DOMTRUST) == ACB_DOMTRUST ) ||
             ( (acct_ctrl &  ACB_WSTRUST) ==  ACB_WSTRUST) ||
             ( (acct_ctrl &  ACB_SVRTRUST) ==  ACB_SVRTRUST) ) {
             DEBUG(5, ("Changing trust account password, not updating /etc/passwd\n"));
        } else  {
            /* update the UNIX password */
                /* update the UNIX password */
                if (lp_unix_password_sync() )
                        if(!chgpasswd(pdb_get_username(&new_pwd), "", buf, True))
                                return False;
        }
 
    memset(buf, 0, sizeof(buf));
 
    if(!pdb_update_sam_account(&new_pwd, True))
        return False;
 
    return True;
}

/*******************************************************************
 set_user_info_24
 ********************************************************************/

static BOOL set_user_info_24(SAM_USER_INFO_24 *id24, uint32 rid)
{
        SAM_ACCOUNT *pwd = pdb_getsampwrid(rid);
        uchar nt_hash[16];
        uchar lm_hash[16];
        uint32 len;
        pstring buf;
        uint16 acct_ctrl;
 
        if (pwd == NULL)
                return False;
 
        acct_ctrl = pdb_get_acct_ctrl(pwd);

        memset(buf, 0, sizeof(buf));
 
        if (!decode_pw_buffer((char*)id24->pass, buf, 256, &len, nt_hash, lm_hash))
                return False;
 
        pdb_set_lanman_passwd (pwd, lm_hash);
        pdb_set_nt_passwd     (pwd, nt_hash);
 
        /* if it's a trust account, don't update /etc/passwd */
        if ( ( (acct_ctrl &  ACB_DOMTRUST) == ACB_DOMTRUST ) ||
             ( (acct_ctrl &  ACB_WSTRUST) ==  ACB_WSTRUST) ||
             ( (acct_ctrl &  ACB_SVRTRUST) ==  ACB_SVRTRUST) ) {
             DEBUG(5, ("Changing trust account password, not updating /etc/passwd\n"));
        } else {
                /* update the UNIX password */
                if (lp_unix_password_sync())
                        if(!chgpasswd(pdb_get_username(pwd), "", buf, True))
                                return False;
        }
 
    memset(buf, 0, sizeof(buf));
 
    DEBUG(0,("set_user_info_24: pdb_update_sam_account()\n"));
 
    /* update the SAMBA password */
    if(!pdb_update_sam_account(pwd, True))
        return False;
 
    return True;
}

/*******************************************************************
 samr_reply_set_userinfo
 ********************************************************************/

uint32 _samr_set_userinfo(pipes_struct *p, SAMR_Q_SET_USERINFO *q_u, SAMR_R_SET_USERINFO *r_u)
{
        uint32 rid = 0x0;
        DOM_SID sid;
        struct current_user user;
        SAM_ACCOUNT *sam_pass;
        unsigned char sess_key[16];
        POLICY_HND *pol = &q_u->pol;
        uint16 switch_value = q_u->switch_value;
        SAM_USERINFO_CTR *ctr = q_u->ctr;

        DEBUG(5, ("_samr_set_userinfo: %d\n", __LINE__));

        r_u->status = NT_STATUS_NOPROBLEMO;

        if (p->ntlmssp_auth_validated)  {
                memcpy(&user, &p->pipe_user, sizeof(user));
        } else  {
                extern struct current_user current_user;
                memcpy(&user, &current_user, sizeof(user));
        }

        /* find the policy handle.  open a policy on it. */
        if (!get_lsa_policy_samr_sid(p, pol, &sid))
                return NT_STATUS_INVALID_HANDLE;

        sid_split_rid(&sid, &rid);

        DEBUG(5, ("_samr_set_userinfo: rid:0x%x, level:%d\n", rid, switch_value));

        if (ctr == NULL) {
                DEBUG(5, ("_samr_set_userinfo: NULL info level\n"));
                return NT_STATUS_INVALID_INFO_CLASS;
        }


        /* 
         * We need the NT hash of the user who is changing the user's password.
         * This NT hash is used to generate a "user session key"
         * This "user session key" is in turn used to encrypt/decrypt the user's password.
         */

        become_root();
        sam_pass = pdb_getsampwuid(user.uid);
        unbecome_root();
        if(sam_pass == NULL) {
                DEBUG(0,("_samr_set_userinfo: Unable to get smbpasswd entry for uid %u\n", (unsigned int)user.uid ));
                return NT_STATUS_ACCESS_DENIED;
        }
                
        memset(sess_key, '\0', 16);
        mdfour(sess_key, pdb_get_nt_passwd(sam_pass), 16);

        /* ok!  user info levels (lots: see MSDEV help), off we go... */
        switch (switch_value) {
                case 0x12:
                        if (!set_user_info_12(ctr->info.id12, rid))
                                return NT_STATUS_ACCESS_DENIED;
                        break;

                case 24:
                        SamOEMhash(ctr->info.id24->pass, sess_key, 1);
                        if (!set_user_info_24(ctr->info.id24, rid))
                                return NT_STATUS_ACCESS_DENIED;
                        break;

                case 23:
                        SamOEMhash(ctr->info.id23->pass, sess_key, 1);
                        if (!set_user_info_23(ctr->info.id23, rid))
                                return NT_STATUS_ACCESS_DENIED;
                        break;

                default:
                        return NT_STATUS_INVALID_INFO_CLASS;
        }

        return r_u->status;
}

/*******************************************************************
 samr_reply_set_userinfo2
 ********************************************************************/

uint32 _samr_set_userinfo2(pipes_struct *p, SAMR_Q_SET_USERINFO2 *q_u, SAMR_R_SET_USERINFO2 *r_u)
{
        DOM_SID sid;
        uint32 rid = 0x0;
        SAM_USERINFO_CTR *ctr = q_u->ctr;
        POLICY_HND *pol = &q_u->pol;
        uint16 switch_value = q_u->switch_value;

        DEBUG(5, ("samr_reply_set_userinfo2: %d\n", __LINE__));

        r_u->status = NT_STATUS_NOPROBLEMO;

        /* find the policy handle.  open a policy on it. */
        if (!get_lsa_policy_samr_sid(p, pol, &sid))
                return NT_STATUS_INVALID_HANDLE;

        sid_split_rid(&sid, &rid);

        DEBUG(5, ("samr_reply_set_userinfo2: rid:0x%x\n", rid));

        if (ctr == NULL) {
                DEBUG(5, ("samr_reply_set_userinfo2: NULL info level\n"));
                return NT_STATUS_INVALID_INFO_CLASS;
        }

        switch_value=ctr->switch_value;

        /* ok!  user info levels (lots: see MSDEV help), off we go... */
        switch (switch_value) {
                case 21:
                        if (!set_user_info_21(ctr->info.id21, rid))
                                return NT_STATUS_ACCESS_DENIED;
                        break;
                case 16:
                        if (!set_user_info_10(ctr->info.id10, rid))
                                return NT_STATUS_ACCESS_DENIED;
                        break;
                case 18:
                        /* Used by AS/U JRA. */
                        if (!set_user_info_12(ctr->info.id12, rid))
                                return NT_STATUS_ACCESS_DENIED;
                        break;
                default:
                        return NT_STATUS_INVALID_INFO_CLASS;
        }

        return r_u->status;
}

/*********************************************************************
 _samr_query_aliasmem
*********************************************************************/

uint32 _samr_query_useraliases(pipes_struct *p, SAMR_Q_QUERY_USERALIASES *q_u, SAMR_R_QUERY_USERALIASES *r_u)
{
        uint32 *rid=NULL;
        int num_rids;
        
        num_rids = 1;
        rid=(uint32 *)talloc(p->mem_ctx, num_rids*sizeof(uint32));
        if (rid==NULL)
                return NT_STATUS_NO_MEMORY;
        
        /* until i see a real useraliases query, we fack one up */

        rid[0] = BUILTIN_ALIAS_RID_USERS;

        init_samr_r_query_useraliases(r_u, num_rids, rid, NT_STATUS_NO_PROBLEMO);

        return NT_STATUS_NO_PROBLEMO;

}

/*********************************************************************
 _samr_query_aliasmem
*********************************************************************/

uint32 _samr_query_aliasmem(pipes_struct *p, SAMR_Q_QUERY_ALIASMEM *q_u, SAMR_R_QUERY_ALIASMEM *r_u)
{
        int i;

        GROUP_MAP map;
        int num_uids = 0;
        DOM_SID2 *sid;
        uid_t *uid=NULL;

        DOM_SID alias_sid;
        DOM_SID als_sid;
        uint32 alias_rid;
        fstring alias_sid_str;
        DOM_SID temp_sid;


        /* find the policy handle.  open a policy on it. */
        if (!get_lsa_policy_samr_sid(p, &q_u->alias_pol, &alias_sid)) 
                return NT_STATUS_INVALID_HANDLE;

        sid_copy(&als_sid, &alias_sid);
        sid_to_string(alias_sid_str, &alias_sid);
        sid_split_rid(&alias_sid, &alias_rid);

        DEBUG(10, ("sid is %s\n", alias_sid_str));

        if (sid_equal(&alias_sid, &global_sid_Builtin)) {
                DEBUG(10, ("lookup on Builtin SID (S-1-5-32)\n"));
                if(!get_builtin_group_from_sid(als_sid, &map))
                        return NT_STATUS_NO_SUCH_ALIAS;
        } else {
                if (sid_equal(&alias_sid, &global_sam_sid)) {
                        DEBUG(10, ("lookup on Server SID\n"));
                        if(!get_local_group_from_sid(als_sid, &map))
                                return NT_STATUS_NO_SUCH_ALIAS;
                }
        }

        if(!get_uid_list_of_group(map.gid, &uid, &num_uids))
                return NT_STATUS_NO_SUCH_ALIAS;

        DEBUG(10, ("sid is %s\n", alias_sid_str));
        sid = (DOM_SID2 *)talloc(p->mem_ctx, sizeof(DOM_SID2) * num_uids);      
        if (sid == NULL) 
                return NT_STATUS_NO_SUCH_ALIAS;

        for (i = 0; i < num_uids; i++) {
                sid_copy(&temp_sid, &global_sam_sid);
                sid_append_rid(&temp_sid, pdb_uid_to_user_rid(uid[i]));
                
                init_dom_sid2(&sid[i], &temp_sid);
        }

        DEBUG(10, ("sid is %s\n", alias_sid_str));
        init_samr_r_query_aliasmem(r_u, num_uids, sid, NT_STATUS_NO_PROBLEMO);

        return NT_STATUS_NOPROBLEMO;
}

/*********************************************************************
 _samr_query_groupmem
*********************************************************************/

uint32 _samr_query_groupmem(pipes_struct *p, SAMR_Q_QUERY_GROUPMEM *q_u, SAMR_R_QUERY_GROUPMEM *r_u)
{
        int num_uids = 0;
        int i;
        DOM_SID group_sid;
        uint32 group_rid;
        fstring group_sid_str;
        uid_t *uid=NULL;
        
        GROUP_MAP map;

        uint32 *rid=NULL;
        uint32 *attr=NULL;


        /* find the policy handle.  open a policy on it. */
        if (!get_lsa_policy_samr_sid(p, &q_u->group_pol, &group_sid)) 
                return NT_STATUS_INVALID_HANDLE;

        /* todo: change to use sid_compare_front */

        sid_split_rid(&group_sid, &group_rid);
        sid_to_string(group_sid_str, &group_sid);
        DEBUG(10, ("sid is %s\n", group_sid_str));

        /* can we get a query for an SID outside our domain ? */
        if (!sid_equal(&group_sid, &global_sam_sid))
                return NT_STATUS_NO_SUCH_GROUP;

        sid_append_rid(&group_sid, group_rid);
        DEBUG(10, ("lookup on Domain SID\n"));

        if(!get_domain_group_from_sid(group_sid, &map))
                return NT_STATUS_NO_SUCH_GROUP;

        if(!get_uid_list_of_group(map.gid, &uid, &num_uids))
                return NT_STATUS_NO_SUCH_GROUP;

        rid=talloc(p->mem_ctx, sizeof(uint32)*num_uids);
        attr=talloc(p->mem_ctx, sizeof(uint32)*num_uids);
        
        if (rid==NULL || attr==NULL)
                return NT_STATUS_NO_MEMORY;
        
        for (i=0; i<num_uids; i++) {
                rid[i]=pdb_uid_to_user_rid(uid[i]);
                attr[i] = SID_NAME_USER;                
        }

        init_samr_r_query_groupmem(r_u, num_uids, rid, attr, NT_STATUS_NOPROBLEMO);

        return NT_STATUS_NOPROBLEMO;
}

/*********************************************************************
 _samr_add_aliasmem
*********************************************************************/

uint32 _samr_add_aliasmem(pipes_struct *p, SAMR_Q_ADD_ALIASMEM *q_u, SAMR_R_ADD_ALIASMEM *r_u)
{
        DOM_SID alias_sid;
        fstring alias_sid_str;
        uid_t uid;
        struct passwd *pwd;
        struct group *grp;
        fstring grp_name;
        uint32 rid;
        GROUP_MAP map;

        /* Find the policy handle. Open a policy on it. */
        if (!get_lsa_policy_samr_sid(p, &q_u->alias_pol, &alias_sid)) 
                return NT_STATUS_INVALID_HANDLE;

        sid_to_string(alias_sid_str, &alias_sid);
        DEBUG(10, ("sid is %s\n", alias_sid_str));

        if (sid_compare(&alias_sid, &global_sam_sid)>0) {
                DEBUG(10, ("adding member on Server SID\n"));
                if(!get_local_group_from_sid(alias_sid, &map))
                        return NT_STATUS_NO_SUCH_ALIAS;
        
        } else {
                if (sid_compare(&alias_sid, &global_sid_Builtin)>0) {
                        DEBUG(10, ("adding member on BUILTIN SID\n"));
                        if( !get_builtin_group_from_sid(alias_sid, &map))
                                return NT_STATUS_NO_SUCH_ALIAS;

                } else
                        return NT_STATUS_NO_SUCH_ALIAS;
        }
        
        sid_split_rid(&q_u->sid.sid, &rid);
        uid=pdb_user_rid_to_uid(rid);

        if ((pwd=getpwuid(uid)) == NULL)
                return NT_STATUS_NO_SUCH_USER;

        if ((grp=getgrgid(map.gid)) == NULL)
                return NT_STATUS_NO_SUCH_ALIAS;

        /* we need to copy the name otherwise it's overloaded in user_in_group_list */
        fstrcpy(grp_name, grp->gr_name);

        /* if the user is already in the group */
        if(user_in_group_list(pwd->pw_name, grp_name))
                return NT_STATUS_MEMBER_IN_ALIAS;

        /* 
         * ok, the group exist, the user exist, the user is not in the group,
         * we can (finally) add it to the group !
         */
        smb_add_user_group(grp_name, pwd->pw_name);

        /* check if the user has been added then ... */
        if(!user_in_group_list(pwd->pw_name, grp_name))
                return NT_STATUS_MEMBER_NOT_IN_ALIAS;   /* don't know what to reply else */

        return NT_STATUS_NOPROBLEMO;
}

/*********************************************************************
 _samr_del_aliasmem
*********************************************************************/

uint32 _samr_del_aliasmem(pipes_struct *p, SAMR_Q_DEL_ALIASMEM *q_u, SAMR_R_DEL_ALIASMEM *r_u)
{
  DEBUG(0,("_samr_del_aliasmem: Not yet implemented.\n"));
  return False;
}

/*********************************************************************
 _samr_add_groupmem
*********************************************************************/

uint32 _samr_add_groupmem(pipes_struct *p, SAMR_Q_ADD_GROUPMEM *q_u, SAMR_R_ADD_GROUPMEM *r_u)
{
        DOM_SID group_sid;
        fstring group_sid_str;
        struct passwd *pwd;
        struct group *grp;
        fstring grp_name;
        GROUP_MAP map;

        /* Find the policy handle. Open a policy on it. */
        if (!get_lsa_policy_samr_sid(p, &q_u->pol, &group_sid)) 
                return NT_STATUS_INVALID_HANDLE;

        sid_to_string(group_sid_str, &group_sid);
        DEBUG(10, ("sid is %s\n", group_sid_str));

        if (sid_compare(&group_sid, &global_sam_sid)<=0)
                return NT_STATUS_NO_SUCH_GROUP;

        DEBUG(10, ("lookup on Domain SID\n"));

        if(!get_domain_group_from_sid(group_sid, &map))
                return NT_STATUS_NO_SUCH_GROUP;

        if ((pwd=getpwuid(pdb_user_rid_to_uid(q_u->rid))) ==NULL)
                return NT_STATUS_NO_SUCH_USER;

        if ((grp=getgrgid(map.gid)) == NULL)
                return NT_STATUS_NO_SUCH_GROUP;

        /* we need to copy the name otherwise it's overloaded in user_in_group_list */
        fstrcpy(grp_name, grp->gr_name);

        /* if the user is already in the group */
        if(user_in_group_list(pwd->pw_name, grp_name))
                return NT_STATUS_MEMBER_IN_GROUP;

        /* 
         * ok, the group exist, the user exist, the user is not in the group,
         *
         * we can (finally) add it to the group !
         */

        smb_add_user_group(grp_name, pwd->pw_name);

        /* check if the user has been added then ... */
        if(!user_in_group_list(pwd->pw_name, grp_name))
                return NT_STATUS_MEMBER_NOT_IN_GROUP;           /* don't know what to reply else */

        return NT_STATUS_NOPROBLEMO;
}

/*********************************************************************
 _samr_del_groupmem
*********************************************************************/

uint32 _samr_del_groupmem(pipes_struct *p, SAMR_Q_DEL_GROUPMEM *q_u, SAMR_R_DEL_GROUPMEM *r_u)
{
  DEBUG(0,("_samr_del_groupmem: Not yet implemented.\n"));
  return False;
}

/*********************************************************************
 _samr_delete_dom_user
*********************************************************************/

uint32 _samr_delete_dom_user(pipes_struct *p, SAMR_Q_DELETE_DOM_USER *q_u, SAMR_R_DELETE_DOM_USER *r_u )
{
  DEBUG(0,("_samr_delete_dom_user: Not yet implemented.\n"));
  return False;
}

/*********************************************************************
 _samr_delete_dom_group
*********************************************************************/

uint32 _samr_delete_dom_group(pipes_struct *p, SAMR_Q_DELETE_DOM_GROUP *q_u, SAMR_R_DELETE_DOM_GROUP *r_u)
{
  DEBUG(0,("_samr_delete_dom_group: Not yet implemented.\n"));
  return False;
}

/*********************************************************************
 _samr_delete_dom_alias
*********************************************************************/

uint32 _samr_delete_dom_alias(pipes_struct *p, SAMR_Q_DELETE_DOM_ALIAS *q_u, SAMR_R_DELETE_DOM_ALIAS *r_u)
{
  DEBUG(0,("_samr_delete_dom_alias: Not yet implemented.\n"));
  return False;
}

/*********************************************************************
 _samr_create_dom_group
*********************************************************************/

uint32 _samr_create_dom_group(pipes_struct *p, SAMR_Q_CREATE_DOM_GROUP *q_u, SAMR_R_CREATE_DOM_GROUP *r_u)
{
        DOM_SID dom_sid;
        DOM_SID info_sid;
        fstring name;
        fstring sid_string;
        struct group *grp;
        struct samr_info *info;

        /* Find the policy handle. Open a policy on it. */
        if (!get_lsa_policy_samr_sid(p, &q_u->pol, &dom_sid)) 
                return NT_STATUS_INVALID_HANDLE;

        if (!sid_equal(&dom_sid, &global_sam_sid))
                return NT_STATUS_ACCESS_DENIED;

        /* TODO: check if allowed to create group and add a become_root/unbecome_root pair.*/

        unistr2_to_ascii(name, &q_u->uni_acct_desc, sizeof(name)-1);

        /* check if group already exist */
        if ((grp=getgrnam(name)) != NULL)
                return NT_STATUS_GROUP_EXISTS;

        /* we can create the UNIX group */
        smb_create_group(name);

        /* check if the group has been successfully created */
        if ((grp=getgrnam(name)) == NULL)
                return NT_STATUS_ACCESS_DENIED;

        r_u->rid=pdb_gid_to_group_rid(grp->gr_gid);

        /* add the group to the mapping table */
        if(!add_initial_entry(grp->gr_gid, sid_string, SID_NAME_DOM_GRP, name, NULL, SE_PRIV_NONE))
                return NT_STATUS_ACCESS_DENIED;

        if ((info = (struct samr_info *)malloc(sizeof(struct samr_info))) == NULL)
                return NT_STATUS_NO_MEMORY;

        ZERO_STRUCTP(info);

        sid_copy(&info_sid, &global_sam_sid);
        sid_append_rid(&info->sid, r_u->rid);
        sid_to_string(sid_string, &info->sid);

        /* get a (unique) handle.  open a policy on it. */
        if (!create_policy_hnd(p, &r_u->pol, free_samr_info, (void *)info))
                return NT_STATUS_OBJECT_NAME_NOT_FOUND;

        return NT_STATUS_NOPROBLEMO;
}

/*********************************************************************
 _samr_create_dom_alias
*********************************************************************/

uint32 _samr_create_dom_alias(pipes_struct *p, SAMR_Q_CREATE_DOM_ALIAS *q_u, SAMR_R_CREATE_DOM_ALIAS *r_u)
{
        DOM_SID dom_sid;
        fstring name;
        fstring sid_string;
        struct group *grp;
        struct samr_info *info;

        /* Find the policy handle. Open a policy on it. */
        if (!get_lsa_policy_samr_sid(p, &q_u->dom_pol, &dom_sid)) 
                return NT_STATUS_INVALID_HANDLE;

        if (!sid_equal(&dom_sid, &global_sam_sid))
                return NT_STATUS_ACCESS_DENIED;

        /* TODO: check if allowed to create group  and add a become_root/unbecome_root pair.*/

        unistr2_to_ascii(name, &q_u->uni_acct_desc, sizeof(name)-1);

        /* check if group already exists */
        if ( (grp=getgrnam(name)) != NULL)
                return NT_STATUS_GROUP_EXISTS;

        /* we can create the UNIX group */
        smb_create_group(name);

        /* check if the group has been successfully created */
        if ((grp=getgrnam(name)) == NULL)
                return NT_STATUS_ACCESS_DENIED;

        r_u->rid=pdb_gid_to_group_rid(grp->gr_gid);

        /* add the group to the mapping table */
        if(!add_initial_entry(grp->gr_gid, sid_string, SID_NAME_ALIAS, NULL, NULL, SE_PRIV_NONE))
                return NT_STATUS_ACCESS_DENIED;

        if ((info = (struct samr_info *)malloc(sizeof(struct samr_info))) == NULL)
                return NT_STATUS_NO_MEMORY;

        ZERO_STRUCTP(info);

        sid_copy(&info->sid, &global_sam_sid);
        sid_append_rid(&info->sid, r_u->rid);
        sid_to_string(sid_string, &info->sid);

        /* get a (unique) handle.  open a policy on it. */
        if (!create_policy_hnd(p, &r_u->alias_pol, free_samr_info, (void *)info))
                return NT_STATUS_OBJECT_NAME_NOT_FOUND;

        return NT_STATUS_NOPROBLEMO;
}

/*********************************************************************
 _samr_query_groupinfo

sends the name/comment pair of a domain group
level 1 send also the number of users of that group
*********************************************************************/

uint32 _samr_query_groupinfo(pipes_struct *p, SAMR_Q_QUERY_GROUPINFO *q_u, SAMR_R_QUERY_GROUPINFO *r_u)
{
        DOM_SID group_sid;
        GROUP_MAP map;
        uid_t *uid;
        int num_uids=0;
        GROUP_INFO_CTR *ctr;

        if (!get_lsa_policy_samr_sid(p, &q_u->pol, &group_sid)) 
                return NT_STATUS_INVALID_HANDLE;

        if (!get_domain_group_from_sid(group_sid, &map))
                return NT_STATUS_INVALID_HANDLE;
        
        ctr=(GROUP_INFO_CTR *)talloc(p->mem_ctx, sizeof(GROUP_INFO_CTR));
        if (ctr==NULL)
                return NT_STATUS_NO_MEMORY;

        switch (q_u->switch_level) {
                case 1:
                        ctr->switch_value1 = 1;
                        if(!get_uid_list_of_group(map.gid, &uid, &num_uids))
                                return NT_STATUS_NO_SUCH_GROUP;
                        init_samr_group_info1(&ctr->group.info1, map.nt_name, map.comment, num_uids);
                        safe_free(uid);
                        break;
                case 4:
                        ctr->switch_value1 = 4;
                        init_samr_group_info4(&ctr->group.info4, map.comment);
                        break;
                default:
                        return NT_STATUS_INVALID_INFO_CLASS;
        }

        init_samr_r_query_groupinfo(r_u, ctr, NT_STATUS_NO_PROBLEMO);

        return NT_STATUS_NO_PROBLEMO;
}

/*********************************************************************
 _samr_set_groupinfo
 
 update a domain group's comment.
*********************************************************************/

uint32 _samr_set_groupinfo(pipes_struct *p, SAMR_Q_SET_GROUPINFO *q_u, SAMR_R_SET_GROUPINFO *r_u)
{
        DOM_SID group_sid;
        GROUP_MAP map;
        GROUP_INFO_CTR *ctr;

        if (!get_lsa_policy_samr_sid(p, &q_u->pol, &group_sid)) 
                return NT_STATUS_INVALID_HANDLE;

        if (!get_domain_group_from_sid(group_sid, &map))
                return NT_STATUS_NO_SUCH_GROUP;
        
        ctr=q_u->ctr;

        switch (ctr->switch_value1) {
                case 1:
                        unistr2_to_ascii(map.comment, &(ctr->group.info1.uni_acct_desc), sizeof(map.comment)-1);
                        break;
                case 4:
                        unistr2_to_ascii(map.comment, &(ctr->group.info4.uni_acct_desc), sizeof(map.comment)-1);
                        break;
                default:
                        return NT_STATUS_INVALID_INFO_CLASS;
        }

        if(!add_mapping_entry(&map, TDB_REPLACE))
                return NT_STATUS_NO_SUCH_GROUP;

        return NT_STATUS_NO_PROBLEMO;
}

/*********************************************************************
 _samr_get_dom_pwinfo
*********************************************************************/

uint32 _samr_get_dom_pwinfo(pipes_struct *p, SAMR_Q_GET_DOM_PWINFO *q_u, SAMR_R_GET_DOM_PWINFO *r_u)
{
        /* Actually, returning zeros here works quite well :-). */
        return NT_STATUS_NOPROBLEMO;
}

/*********************************************************************
 _samr_open_group
*********************************************************************/

uint32 _samr_open_group(pipes_struct *p, SAMR_Q_OPEN_GROUP *q_u, SAMR_R_OPEN_GROUP *r_u)
{
        DOM_SID sid;
        GROUP_MAP map;
        struct samr_info *info;
        fstring sid_string;

        if (!get_lsa_policy_samr_sid(p, &q_u->domain_pol, &sid)) 
                return NT_STATUS_INVALID_HANDLE;

        /* this should not be hard-coded like this */
        if (!sid_equal(&sid, &global_sam_sid))
                return NT_STATUS_ACCESS_DENIED;

        if ((info = (struct samr_info *)malloc(sizeof(struct samr_info))) == NULL)
                return NT_STATUS_NO_MEMORY;

        ZERO_STRUCTP(info);

        sid_copy(&info->sid, &global_sam_sid);
        sid_append_rid(&info->sid, q_u->rid_group);
        sid_to_string(sid_string, &info->sid);

        DEBUG(10, ("Opening SID: %s\n", sid_string));

        /* check if that group really exists */
        if (!get_domain_group_from_sid(info->sid, &map))
                return NT_STATUS_NO_SUCH_USER;

        /* get a (unique) handle.  open a policy on it. */
        if (!create_policy_hnd(p, &r_u->pol, free_samr_info, (void *)info))
                return NT_STATUS_OBJECT_NAME_NOT_FOUND;

        return NT_STATUS_NO_PROBLEMO;
}

/*********************************************************************
 _samr_unknown_2d
*********************************************************************/

uint32 _samr_unknown_2d(pipes_struct *p, SAMR_Q_UNKNOWN_2D *q_u, SAMR_R_UNKNOWN_2D *r_u)
{
  DEBUG(0,("_samr_unknown_2d: Not yet implemented.\n"));
  return False;
}