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srv_lsa_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) 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 lsa server code. */

#include "includes.h"

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

static PRIVS privs[] = {
    {SE_PRIV_NONE, "no_privs", "No privilege"},
    {SE_PRIV_ADD_USERS, "add_users", "add users"},
    {SE_PRIV_ADD_MACHINES, "add_computers", "add computers to domain"},
    {SE_PRIV_PRINT_OPERATOR, "print_op", "printer operator"},
    {SE_PRIV_ALL, "all_privs", "all privileges"}
};

struct lsa_info {
    DOM_SID sid;
    uint32 access;
};

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

static void free_lsa_info(void *ptr)
{
      struct lsa_info *lsa = (struct lsa_info *)ptr;

      SAFE_FREE(lsa);
}

/***************************************************************************
Init dom_query
 ***************************************************************************/

static void init_dom_query(DOM_QUERY *d_q, char *dom_name, DOM_SID *dom_sid)
{
      int domlen = (dom_name != NULL) ? strlen(dom_name) : 0;

      /*
       * I'm not sure why this really odd combination of length
       * values works, but it does appear to. I need to look at
       * this *much* more closely - but at the moment leave alone
       * until it's understood. This allows a W2k client to join
       * a domain with both odd and even length names... JRA.
       */

      d_q->uni_dom_str_len = domlen ? ((domlen + 1) * 2) : 0;
      d_q->uni_dom_max_len = domlen * 2;
      d_q->buffer_dom_name = domlen != 0 ? 1 : 0; /* domain buffer pointer */
      d_q->buffer_dom_sid = dom_sid != NULL ? 1 : 0;  /* domain sid pointer */

      /* this string is supposed to be character short */
      init_unistr2(&d_q->uni_domain_name, dom_name, domlen);
      d_q->uni_domain_name.uni_max_len++;

      if (dom_sid != NULL)
            init_dom_sid2(&d_q->dom_sid, dom_sid);
}

/***************************************************************************
 init_dom_ref - adds a domain if it's not already in, returns the index.
***************************************************************************/

static int init_dom_ref(DOM_R_REF *ref, char *dom_name, DOM_SID *dom_sid)
{
      int num = 0;
      int len;

      if (dom_name != NULL) {
            for (num = 0; num < ref->num_ref_doms_1; num++) {
                  fstring domname;
                  fstrcpy(domname, dos_unistr2_to_str(&ref->ref_dom[num].uni_dom_name));
                  if (strequal(domname, dom_name))
                        return num;
            }
      } else {
            num = ref->num_ref_doms_1;
      }

      if (num >= MAX_REF_DOMAINS) {
            /* index not found, already at maximum domain limit */
            return -1;
      }

      ref->num_ref_doms_1 = num+1;
      ref->ptr_ref_dom  = 1;
      ref->max_entries = MAX_REF_DOMAINS;
      ref->num_ref_doms_2 = num+1;

      len = (dom_name != NULL) ? strlen(dom_name) : 0;
      if(dom_name != NULL && len == 0)
            len = 1;

      init_uni_hdr(&ref->hdr_ref_dom[num].hdr_dom_name, len);
      ref->hdr_ref_dom[num].ptr_dom_sid = dom_sid != NULL ? 1 : 0;

      init_unistr2(&ref->ref_dom[num].uni_dom_name, dom_name, len);
      init_dom_sid2(&ref->ref_dom[num].ref_dom, dom_sid );

      return num;
}

/***************************************************************************
 init_lsa_rid2s
 ***************************************************************************/

static void init_lsa_rid2s(DOM_R_REF *ref, DOM_RID2 *rid2,
                        int num_entries, UNISTR2 *name,
                        uint32 *mapped_count, BOOL endian)
{
      int i;
      int total = 0;
      *mapped_count = 0;

      SMB_ASSERT(num_entries <= MAX_LOOKUP_SIDS);

      for (i = 0; i < num_entries; i++) {
            BOOL status = False;
            DOM_SID sid;
            uint32 rid = 0xffffffff;
            int dom_idx = -1;
            pstring full_name;
            fstring dom_name, user;
            enum SID_NAME_USE name_type = SID_NAME_UNKNOWN;

            /* Split name into domain and user component */

            dos_to_unix(full_name, dos_unistr2_to_str(&name[i])); /* full name should be in unix charset. */
            split_domain_name(full_name, dom_name, user);

            /* Lookup name */

            DEBUG(5, ("init_lsa_rid2s: looking up name %s\n", full_name));

            status = lookup_name(full_name, &sid, &name_type);

            DEBUG(5, ("init_lsa_rid2s: %s\n", status ? "found" : 
                    "not found"));

            if (status) {
                  sid_split_rid(&sid, &rid);
                  dom_idx = init_dom_ref(ref, dom_name, &sid);
                  (*mapped_count)++;
            } else {
                  dom_idx = -1;
                  rid = 0xffffffff;
                  name_type = SID_NAME_UNKNOWN;
            }

            init_dom_rid2(&rid2[total], rid, name_type, dom_idx);
            total++;
      }
}

/***************************************************************************
 init_reply_lookup_names
 ***************************************************************************/

static void init_reply_lookup_names(LSA_R_LOOKUP_NAMES *r_l,
                DOM_R_REF *ref, uint32 num_entries,
                DOM_RID2 *rid2, uint32 mapped_count)
{
      r_l->ptr_dom_ref  = 1;
      r_l->dom_ref      = ref;

      r_l->num_entries  = num_entries;
      r_l->ptr_entries  = 1;
      r_l->num_entries2 = num_entries;
      r_l->dom_rid      = rid2;

      r_l->mapped_count = mapped_count;

      if (mapped_count == 0)
            r_l->status = NT_STATUS_NONE_MAPPED;
      else
            r_l->status = NT_STATUS_OK;
}

/***************************************************************************
 Init lsa_trans_names.
 ***************************************************************************/

static void init_lsa_trans_names(TALLOC_CTX *ctx, DOM_R_REF *ref, LSA_TRANS_NAME_ENUM *trn,
                         int num_entries, DOM_SID2 *sid,
                         uint32 *mapped_count)
{
      int i;
      int total = 0;

      *mapped_count = 0;

      /* Allocate memory for list of names */

      if (num_entries > 0) {
            if (!(trn->name = (LSA_TRANS_NAME *)talloc(ctx, sizeof(LSA_TRANS_NAME) *
                                            num_entries))) {
                  DEBUG(0, ("init_lsa_trans_names(): out of memory\n"));
                  return;
            }

            if (!(trn->uni_name = (UNISTR2 *)talloc(ctx, sizeof(UNISTR2) * 
                                          num_entries))) {
                  DEBUG(0, ("init_lsa_trans_names(): out of memory\n"));
                  return;
            }
      }

      for (i = 0; i < num_entries; i++) {
            BOOL status = False;
            DOM_SID find_sid;
            uint32 rid = 0xffffffff;
            int dom_idx = -1;
            fstring name, dom_name;
            enum SID_NAME_USE sid_name_use = (enum SID_NAME_USE)0;

            find_sid = sid[i].sid;
            sid_to_string(name, &find_sid);
            DEBUG(5, ("init_lsa_trans_names: looking up sid %s\n", name));

            /* Lookup sid from winbindd */

            memset(dom_name, '\0', sizeof(dom_name));
            memset(name, '\0', sizeof(name));

            status = lookup_sid(&find_sid, dom_name, name, &sid_name_use);

            DEBUG(5, ("init_lsa_trans_names: %s\n", status ? "found" : 
                    "not found"));

            if (!status) {
                  sid_name_use = SID_NAME_UNKNOWN;
            }

            /* Store domain sid in ref array */

            if (find_sid.num_auths == 5) {
                  sid_split_rid(&find_sid, &rid);
            }

            /* unistr routines take dos codepage strings */

            dom_idx = init_dom_ref(ref, dom_name, &find_sid);

            DEBUG(10,("init_lsa_trans_names: added user '%s\\%s' to referenced list.\n", dom_name, name ));

            (*mapped_count)++;

            init_lsa_trans_name(&trn->name[total], &trn->uni_name[total],
                              sid_name_use, name, dom_idx);
            total++;
      }

      trn->num_entries = total;
      trn->ptr_trans_names = 1;
      trn->num_entries2 = total;
}

/***************************************************************************
 Init_reply_lookup_sids.
 ***************************************************************************/

static void init_reply_lookup_sids(LSA_R_LOOKUP_SIDS *r_l,
                DOM_R_REF *ref, LSA_TRANS_NAME_ENUM *names,
                uint32 mapped_count)
{
      r_l->ptr_dom_ref  = 1;
      r_l->dom_ref      = ref;
      r_l->names        = names;
      r_l->mapped_count = mapped_count;

      if (mapped_count == 0)
            r_l->status = NT_STATUS_NONE_MAPPED;
      else
            r_l->status = NT_STATUS_OK;
}

/***************************************************************************
 _lsa_open_policy2.
 ***************************************************************************/

NTSTATUS _lsa_open_policy2(pipes_struct *p, LSA_Q_OPEN_POL2 *q_u, LSA_R_OPEN_POL2 *r_u)
{
      /* lkclXXXX having decoded it, ignore all fields in the open policy! */

      /* set up the LSA QUERY INFO response */
      if (!create_policy_hnd(p, &r_u->pol, NULL, NULL))
            return NT_STATUS_OBJECT_NAME_NOT_FOUND;

      return NT_STATUS_OK;
}

/***************************************************************************
 _lsa_open_policy
 ***************************************************************************/

NTSTATUS _lsa_open_policy(pipes_struct *p, LSA_Q_OPEN_POL *q_u, LSA_R_OPEN_POL *r_u)
{
      /* lkclXXXX having decoded it, ignore all fields in the open policy! */

      /* set up the LSA QUERY INFO response */
      if (!create_policy_hnd(p, &r_u->pol, NULL, NULL))
            return NT_STATUS_OBJECT_NAME_NOT_FOUND;

      return NT_STATUS_OK;
}

/***************************************************************************
 _lsa_enum_trust_dom - this needs fixing to do more than return NULL ! JRA.
 ***************************************************************************/

NTSTATUS _lsa_enum_trust_dom(pipes_struct *p, LSA_Q_ENUM_TRUST_DOM *q_u, LSA_R_ENUM_TRUST_DOM *r_u)
{
      uint32 enum_context = 0;
      char *dom_name = NULL;
      DOM_SID *dom_sid = NULL;

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

      /* set up the LSA QUERY INFO response */
      init_r_enum_trust_dom(p->mem_ctx, r_u, enum_context, dom_name, dom_sid,
            dom_name != NULL ? NT_STATUS_OK : NT_STATUS_NO_MORE_ENTRIES);

      return r_u->status;
}

/***************************************************************************
 _lsa_query_info. See the POLICY_INFOMATION_CLASS docs at msdn.
 ***************************************************************************/

NTSTATUS _lsa_query_info(pipes_struct *p, LSA_Q_QUERY_INFO *q_u, LSA_R_QUERY_INFO *r_u)
{
      LSA_INFO_UNION *info = &r_u->dom;
      DOM_SID domain_sid;
      char *name = NULL;
      DOM_SID *sid = NULL;

      r_u->status = NT_STATUS_OK;

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

      switch (q_u->info_class) {
      case 0x02:
            {
                  unsigned int i;
                  /* fake info: We audit everything. ;) */
                  info->id2.auditing_enabled = 1;
                  info->id2.count1 = 7;
                  info->id2.count2 = 7;
                  if ((info->id2.auditsettings = (uint32 *)talloc(p->mem_ctx,7*sizeof(uint32))) == NULL)
                        return NT_STATUS_NO_MEMORY;
                  for (i = 0; i < 7; i++)
                        info->id2.auditsettings[i] = 3;
                  break;
            }
      case 0x03:
            /* Request PolicyPrimaryDomainInformation. */
            switch (lp_server_role()) {
                  case ROLE_DOMAIN_PDC:
                  case ROLE_DOMAIN_BDC:
                        name = global_myworkgroup;
                        sid = &global_sam_sid;
                        break;
                  case ROLE_DOMAIN_MEMBER:
                        name = global_myworkgroup;
                        /* We need to return the Domain SID here. */
                        if (secrets_fetch_domain_sid(global_myworkgroup,
                                               &domain_sid))
                              sid = &domain_sid;
                        else
                              return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
                        break;
                  case ROLE_STANDALONE:
                        name = global_myworkgroup;
                        sid = NULL; /* Tell it we're not in a domain. */
                        break;
                  default:
                        return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
            }
            init_dom_query(&r_u->dom.id3, name, sid);
            break;
      case 0x05:
            /* Request PolicyAccountDomainInformation. */
            switch (lp_server_role()) {
                  case ROLE_DOMAIN_PDC:
                  case ROLE_DOMAIN_BDC:
                        name = global_myworkgroup;
                        sid = &global_sam_sid;
                        break;
                  case ROLE_DOMAIN_MEMBER:
                        name = global_myname;
                        sid = &global_sam_sid;
                        break;
                  case ROLE_STANDALONE:
                        name = global_myname;
                        sid = &global_sam_sid;
                        break;
                  default:
                        return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
            }
            init_dom_query(&r_u->dom.id5, name, sid);
            break;
      case 0x06:
            switch (lp_server_role()) {
                  case ROLE_DOMAIN_BDC:
                        /*
                         * only a BDC is a backup controller
                         * of the domain, it controls.
                         */
                        info->id6.server_role = 2;
                        break;
                  default:
                        /*
                         * any other role is a primary
                         * of the domain, it controls.
                         */
                        info->id6.server_role = 3;
                        break; 
            }
            break;
      default:
            DEBUG(0,("_lsa_query_info: unknown info level in Lsa Query: %d\n", q_u->info_class));
            r_u->status = NT_STATUS_INVALID_INFO_CLASS;
            break;
      }

      if (NT_STATUS_IS_OK(r_u->status)) {
            r_u->undoc_buffer = 0x22000000; /* bizarre */
            r_u->info_class = q_u->info_class;
      }

      return r_u->status;
}

/***************************************************************************
 _lsa_lookup_sids
 ***************************************************************************/

NTSTATUS _lsa_lookup_sids(pipes_struct *p, LSA_Q_LOOKUP_SIDS *q_u, LSA_R_LOOKUP_SIDS *r_u)
{
      DOM_SID2 *sid = q_u->sids.sid;
      int num_entries = q_u->sids.num_entries;
      DOM_R_REF *ref = NULL;
      LSA_TRANS_NAME_ENUM *names = NULL;
      uint32 mapped_count = 0;

      ref = (DOM_R_REF *)talloc_zero(p->mem_ctx, sizeof(DOM_R_REF));
      names = (LSA_TRANS_NAME_ENUM *)talloc_zero(p->mem_ctx, sizeof(LSA_TRANS_NAME_ENUM));

      if (!find_policy_by_hnd(p, &q_u->pol, NULL))
            r_u->status = NT_STATUS_INVALID_HANDLE;

      if ((!ref || !names) && NT_STATUS_IS_OK(r_u->status))
            r_u->status = NT_STATUS_NO_MEMORY;

      /* set up the LSA Lookup SIDs response */
      init_lsa_trans_names(p->mem_ctx, ref, names, num_entries, sid, &mapped_count);
      init_reply_lookup_sids(r_u, ref, names, mapped_count);

      return r_u->status;
}

/***************************************************************************
lsa_reply_lookup_names
 ***************************************************************************/

NTSTATUS _lsa_lookup_names(pipes_struct *p,LSA_Q_LOOKUP_NAMES *q_u, LSA_R_LOOKUP_NAMES *r_u)
{
      UNISTR2 *names = q_u->uni_name;
      int num_entries = q_u->num_entries;
      DOM_R_REF *ref;
      DOM_RID2 *rids;
      uint32 mapped_count = 0;

      ref = (DOM_R_REF *)talloc_zero(p->mem_ctx, sizeof(DOM_R_REF));
      rids = (DOM_RID2 *)talloc_zero(p->mem_ctx, sizeof(DOM_RID2)*MAX_LOOKUP_SIDS);

      if (!find_policy_by_hnd(p, &q_u->pol, NULL))
            r_u->status = NT_STATUS_INVALID_HANDLE;

      if ((!ref || !rids) && NT_STATUS_IS_OK(r_u->status))
            r_u->status = NT_STATUS_NO_MEMORY;

      /* set up the LSA Lookup RIDs response */
      init_lsa_rid2s(ref, rids, num_entries, names, &mapped_count, p->endian);
      init_reply_lookup_names(r_u, ref, num_entries, rids, mapped_count);

      return r_u->status;
}

/***************************************************************************
 _lsa_close. Also weird - needs to check if lsa handle is correct. JRA.
 ***************************************************************************/

NTSTATUS _lsa_close(pipes_struct *p, LSA_Q_CLOSE *q_u, LSA_R_CLOSE *r_u)
{
      if (!find_policy_by_hnd(p, &q_u->pol, NULL))
            return NT_STATUS_INVALID_HANDLE;

      close_policy_hnd(p, &q_u->pol);
      return NT_STATUS_OK;
}

/***************************************************************************
  "No more secrets Marty...." :-).
 ***************************************************************************/

NTSTATUS _lsa_open_secret(pipes_struct *p, LSA_Q_OPEN_SECRET *q_u, LSA_R_OPEN_SECRET *r_u)
{
      return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}

/***************************************************************************
_lsa_enum_privs.
 ***************************************************************************/

NTSTATUS _lsa_enum_privs(pipes_struct *p, LSA_Q_ENUM_PRIVS *q_u, LSA_R_ENUM_PRIVS *r_u)
{
      uint32 i;

      uint32 enum_context=q_u->enum_context;
      LSA_PRIV_ENTRY *entry;
      LSA_PRIV_ENTRY *entries;

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

      if (enum_context >= PRIV_ALL_INDEX)
            return NT_STATUS_UNABLE_TO_FREE_VM;

      entries = (LSA_PRIV_ENTRY *)talloc_zero(p->mem_ctx, sizeof(LSA_PRIV_ENTRY) * (PRIV_ALL_INDEX-enum_context));
      if (entries==NULL)
            return NT_STATUS_NO_MEMORY;

      entry = entries;
      for (i = 0; i < PRIV_ALL_INDEX-enum_context; i++, entry++) {
            init_uni_hdr(&entry->hdr_name, strlen(privs[i+1-enum_context].priv));
            init_unistr2(&entry->name, privs[i+1-enum_context].priv, strlen(privs[i+1-enum_context].priv) );
            entry->luid_low = privs[i+1-enum_context].se_priv;
            entry->luid_high = 1;
      }

      init_lsa_r_enum_privs(r_u, i+enum_context, PRIV_ALL_INDEX-enum_context, entries);

      return NT_STATUS_OK;
}

/***************************************************************************
_lsa_priv_get_dispname.
 ***************************************************************************/

NTSTATUS _lsa_priv_get_dispname(pipes_struct *p, LSA_Q_PRIV_GET_DISPNAME *q_u, LSA_R_PRIV_GET_DISPNAME *r_u)
{
      fstring name_asc;
      fstring desc_asc;
      int i;

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

      unistr2_to_dos(name_asc, &q_u->name, sizeof(name_asc));

      DEBUG(0,("_lsa_priv_get_dispname: %s", name_asc));

      for (i=1; privs[i].se_priv!=SE_PRIV_ALL; i++) {
            if ( strcmp(name_asc, privs[i].priv)) {
                  
                  fstrcpy(desc_asc, privs[i].description);
            
            }
      }
      DEBUG(0,(": %s\n", desc_asc));

      init_uni_hdr(&r_u->hdr_desc, strlen(desc_asc));
      init_unistr2(&r_u->desc, desc_asc, strlen(desc_asc) );

      r_u->ptr_info=0xdeadbeef;
      r_u->lang_id=q_u->lang_id;

      return NT_STATUS_OK;
}

NTSTATUS _lsa_unk_get_connuser(pipes_struct *p, LSA_Q_UNK_GET_CONNUSER *q_u, LSA_R_UNK_GET_CONNUSER *r_u)
{
  fstring username, domname;
  int ulen, dlen;
  user_struct *vuser = get_valid_user_struct(p->vuid);
  
  if (vuser == NULL)
    return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
  
  fstrcpy(username, vuser->user.smb_name);
  fstrcpy(domname, vuser->user.domain);
  
  ulen = strlen(username) + 1;
  dlen = strlen(domname) + 1;
  
  init_uni_hdr(&r_u->hdr_user_name, ulen);
  r_u->ptr_user_name = 1;
  init_unistr2(&r_u->uni2_user_name, username, ulen);

  r_u->unk1 = 1;
  
  init_uni_hdr(&r_u->hdr_dom_name, dlen);
  r_u->ptr_dom_name = 1;
  init_unistr2(&r_u->uni2_dom_name, domname, dlen);

  r_u->status = NT_STATUS_OK;
  
  return r_u->status;
}

/***************************************************************************
 
 ***************************************************************************/

NTSTATUS _lsa_open_account(pipes_struct *p, LSA_Q_OPENACCOUNT *q_u, LSA_R_OPENACCOUNT *r_u)
{
      struct lsa_info *info;

      r_u->status = NT_STATUS_OK;

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

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

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

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

      return r_u->status;
}

/***************************************************************************
 
 ***************************************************************************/

NTSTATUS _lsa_getsystemaccount(pipes_struct *p, LSA_Q_GETSYSTEMACCOUNT *q_u, LSA_R_GETSYSTEMACCOUNT *r_u)
{
      r_u->status = NT_STATUS_OK;

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

      r_u->access=3;

      return r_u->status;
}

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