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smbcacls.c

/* 
   Unix SMB/CIFS implementation.
   ACL get/set utility
   
   Copyright (C) Andrew Tridgell 2000
   Copyright (C) Tim Potter      2000
   Copyright (C) Jeremy Allison  2000
   
   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.
*/

#include "includes.h"

static fstring password;
static pstring username;
static pstring owner_username;
static fstring server;
static fstring workgroup = "";
static int got_pass;
static int test_args;
TALLOC_CTX *ctx;

#define CREATE_ACCESS_READ READ_CONTROL_ACCESS
#define CREATE_ACCESS_WRITE (WRITE_DAC_ACCESS | WRITE_OWNER_ACCESS)

/* numeric is set when the user wants numeric SIDs and ACEs rather
   than going via LSA calls to resolve them */
static int numeric;

enum acl_mode {SMB_ACL_SET, SMB_ACL_DELETE, SMB_ACL_MODIFY, SMB_ACL_ADD };
enum chown_mode {REQUEST_NONE, REQUEST_CHOWN, REQUEST_CHGRP};
enum exit_values {EXIT_OK, EXIT_FAILED, EXIT_PARSE_ERROR};

struct perm_value {
      const char *perm;
      uint32 mask;
};

/* These values discovered by inspection */

static struct perm_value special_values[] = {
      { "R", 0x00120089 },
      { "W", 0x00120116 },
      { "X", 0x001200a0 },
      { "D", 0x00010000 },
      { "P", 0x00040000 },
      { "O", 0x00080000 },
      { NULL, 0 },
};

static struct perm_value standard_values[] = {
      { "READ",   0x001200a9 },
      { "CHANGE", 0x001301bf },
      { "FULL",   0x001f01ff },
      { NULL, 0 },
};

struct cli_state lsa_cli;
POLICY_HND pol;
struct ntuser_creds creds;
BOOL got_policy_hnd;

/* Open cli connection and policy handle */

static BOOL cacls_open_policy_hnd(void)
{
      creds.pwd.null_pwd = 1;

      /* Initialise cli LSA connection */

      if (!lsa_cli.initialised && 
          !cli_lsa_initialise(&lsa_cli, server, &creds)) {
            return False;
      }

      /* Open policy handle */

      if (!got_policy_hnd) {

            /* Some systems don't support SEC_RIGHTS_MAXIMUM_ALLOWED,
               but NT sends 0x2000000 so we might as well do it too. */

            if (!NT_STATUS_IS_OK(cli_lsa_open_policy(&lsa_cli, lsa_cli.mem_ctx, True, 
                              GENERIC_EXECUTE_ACCESS, &pol))) {
                  return False;
            }

            got_policy_hnd = True;
      }
      
      return True;
}

/* convert a SID to a string, either numeric or username/group */
static void SidToString(fstring str, DOM_SID *sid)
{
      char **domains = NULL;
      char **names = NULL;
      uint32 *types = NULL;

      sid_to_string(str, sid);

      if (numeric) return;

        if (strcmp(str, "S-1-1-0") == 0) {

                fstrcpy(str, "everyone");
                return;

        }

      /* Ask LSA to convert the sid to a name */

      if (!cacls_open_policy_hnd() ||
          !NT_STATUS_IS_OK(cli_lsa_lookup_sids(&lsa_cli, lsa_cli.mem_ctx,  
                                     &pol, 1, sid, &domains, 
                                     &names, &types)) ||
          !domains || !domains[0] || !names || !names[0]) {
            return;
      }

      /* Converted OK */
      
      slprintf(str, sizeof(fstring) - 1, "%s%s%s",
             domains[0], lp_winbind_separator(),
             names[0]);
      
}

/* convert a string to a SID, either numeric or username/group */
static BOOL StringToSid(DOM_SID *sid, const char *str)
{
      uint32 *types = NULL;
      DOM_SID *sids = NULL;
      BOOL result = True;
      
      if (strncmp(str, "S-", 2) == 0) {
            return string_to_sid(sid, str);
      }

      if (!cacls_open_policy_hnd() ||
          !NT_STATUS_IS_OK(cli_lsa_lookup_names(&lsa_cli, lsa_cli.mem_ctx, 
                                      &pol, 1, &str, &sids, 
                                      &types))) {
            result = False;
            goto done;
      }

      sid_copy(sid, &sids[0]);

 done:

      return result;
}


/* print an ACE on a FILE, using either numeric or ascii representation */
static void print_ace(FILE *f, SEC_ACE *ace)
{
      struct perm_value *v;
      fstring sidstr;
      int do_print = 0;
      uint32 got_mask;

      SidToString(sidstr, &ace->trustee);

      fprintf(f, "%s:", sidstr);

      if (numeric) {
            fprintf(f, "%d/%d/0x%08x", 
                  ace->type, ace->flags, ace->info.mask);
            return;
      }

      /* Ace type */

      if (ace->type == SEC_ACE_TYPE_ACCESS_ALLOWED) {
            fprintf(f, "ALLOWED");
      } else if (ace->type == SEC_ACE_TYPE_ACCESS_DENIED) {
            fprintf(f, "DENIED");
      } else {
            fprintf(f, "%d", ace->type);
      }

      /* Not sure what flags can be set in a file ACL */

      fprintf(f, "/%d/", ace->flags);

      /* Standard permissions */

      for (v = standard_values; v->perm; v++) {
            if (ace->info.mask == v->mask) {
                  fprintf(f, "%s", v->perm);
                  return;
            }
      }

      /* Special permissions.  Print out a hex value if we have
         leftover bits in the mask. */

      got_mask = ace->info.mask;

 again:
      for (v = special_values; v->perm; v++) {
            if ((ace->info.mask & v->mask) == v->mask) {
                  if (do_print) {
                        fprintf(f, "%s", v->perm);
                  }
                  got_mask &= ~v->mask;
            }
      }

      if (!do_print) {
            if (got_mask != 0) {
                  fprintf(f, "0x%08x", ace->info.mask);
            } else {
                  do_print = 1;
                  goto again;
            }
      }
}


/* parse an ACE in the same format as print_ace() */
static BOOL parse_ace(SEC_ACE *ace, char *str)
{
      char *p;
      const char *cp;
      fstring tok;
      unsigned atype, aflags, amask;
      DOM_SID sid;
      SEC_ACCESS mask;
      struct perm_value *v;

      ZERO_STRUCTP(ace);
      p = strchr(str,':');
      if (!p) return False;
      *p = '\0';
      p++;

      /* Try to parse numeric form */

      if (sscanf(p, "%i/%i/%i", &atype, &aflags, &amask) == 3 &&
          StringToSid(&sid, str)) {
            goto done;
      }

      /* Try to parse text form */

      if (!StringToSid(&sid, str)) {
            return False;
      }

      cp = p;
      if (!next_token(&cp, tok, "/", sizeof(fstring))) {
            return False;
      }

      if (strncmp(tok, "ALLOWED", strlen("ALLOWED")) == 0) {
            atype = SEC_ACE_TYPE_ACCESS_ALLOWED;
      } else if (strncmp(tok, "DENIED", strlen("DENIED")) == 0) {
            atype = SEC_ACE_TYPE_ACCESS_DENIED;
      } else {
            return False;
      }

      /* Only numeric form accepted for flags at present */

      if (!(next_token(&cp, tok, "/", sizeof(fstring)) &&
            sscanf(tok, "%i", &aflags))) {
            return False;
      }

      if (!next_token(&cp, tok, "/", sizeof(fstring))) {
            return False;
      }

      if (strncmp(tok, "0x", 2) == 0) {
            if (sscanf(tok, "%i", &amask) != 1) {
                  return False;
            }
            goto done;
      }

      for (v = standard_values; v->perm; v++) {
            if (strcmp(tok, v->perm) == 0) {
                  amask = v->mask;
                  goto done;
            }
      }

      p = tok;

      while(*p) {
            BOOL found = False;

            for (v = special_values; v->perm; v++) {
                  if (v->perm[0] == *p) {
                        amask |= v->mask;
                        found = True;
                  }
            }

            if (!found) return False;
            p++;
      }

      if (*p) {
            return False;
      }

 done:
      mask.mask = amask;
      init_sec_ace(ace, &sid, atype, mask, aflags);
      return True;
}

/* add an ACE to a list of ACEs in a SEC_ACL */
static BOOL add_ace(SEC_ACL **the_acl, SEC_ACE *ace)
{
      SEC_ACL *new;
      SEC_ACE *aces;
      if (! *the_acl) {
            (*the_acl) = make_sec_acl(ctx, 3, 1, ace);
            return True;
      }

      aces = (SEC_ACE *)calloc(1+(*the_acl)->num_aces,sizeof(SEC_ACE));
      memcpy(aces, (*the_acl)->ace, (*the_acl)->num_aces * sizeof(SEC_ACE));
      memcpy(aces+(*the_acl)->num_aces, ace, sizeof(SEC_ACE));
      new = make_sec_acl(ctx,(*the_acl)->revision,1+(*the_acl)->num_aces, aces);
      SAFE_FREE(aces);
      (*the_acl) = new;
      return True;
}

/* parse a ascii version of a security descriptor */
static SEC_DESC *sec_desc_parse(char *str)
{
      const char *p = str;
      fstring tok;
      SEC_DESC *ret;
      size_t sd_size;
      DOM_SID *grp_sid=NULL, *owner_sid=NULL;
      SEC_ACL *dacl=NULL;
      int revision=1;

      while (next_token(&p, tok, "\t,\r\n", sizeof(tok))) {

            if (strncmp(tok,"REVISION:", 9) == 0) {
                  revision = strtol(tok+9, NULL, 16);
                  continue;
            }

            if (strncmp(tok,"OWNER:", 6) == 0) {
                  owner_sid = (DOM_SID *)calloc(1, sizeof(DOM_SID));
                  if (!owner_sid ||
                      !StringToSid(owner_sid, tok+6)) {
                        printf("Failed to parse owner sid\n");
                        return NULL;
                  }
                  continue;
            }

            if (strncmp(tok,"GROUP:", 6) == 0) {
                  grp_sid = (DOM_SID *)calloc(1, sizeof(DOM_SID));
                  if (!grp_sid ||
                      !StringToSid(grp_sid, tok+6)) {
                        printf("Failed to parse group sid\n");
                        return NULL;
                  }
                  continue;
            }

            if (strncmp(tok,"ACL:", 4) == 0) {
                  SEC_ACE ace;
                  if (!parse_ace(&ace, tok+4)) {
                        printf("Failed to parse ACL %s\n", tok);
                        return NULL;
                  }
                  if(!add_ace(&dacl, &ace)) {
                        printf("Failed to add ACL %s\n", tok);
                        return NULL;
                  }
                  continue;
            }

            printf("Failed to parse security descriptor\n");
            return NULL;
      }

      ret = make_sec_desc(ctx,revision, owner_sid, grp_sid, 
                      NULL, dacl, &sd_size);

      SAFE_FREE(grp_sid);
      SAFE_FREE(owner_sid);

      return ret;
}


/* print a ascii version of a security descriptor on a FILE handle */
static void sec_desc_print(FILE *f, SEC_DESC *sd)
{
      fstring sidstr;
      uint32 i;

      printf("REVISION:%d\n", sd->revision);

      /* Print owner and group sid */

      if (sd->owner_sid) {
            SidToString(sidstr, sd->owner_sid);
      } else {
            fstrcpy(sidstr, "");
      }

      printf("OWNER:%s\n", sidstr);

      if (sd->grp_sid) {
            SidToString(sidstr, sd->grp_sid);
      } else {
            fstrcpy(sidstr, "");
      }

      fprintf(f, "GROUP:%s\n", sidstr);

      /* Print aces */
      for (i = 0; sd->dacl && i < sd->dacl->num_aces; i++) {
            SEC_ACE *ace = &sd->dacl->ace[i];
            fprintf(f, "ACL:");
            print_ace(f, ace);
            fprintf(f, "\n");
      }

}

/***************************************************** 
dump the acls for a file
*******************************************************/
static int cacl_dump(struct cli_state *cli, char *filename)
{
      int fnum;
      SEC_DESC *sd;

      if (test_args) return EXIT_OK;

      fnum = cli_nt_create(cli, filename, CREATE_ACCESS_READ);
      if (fnum == -1) {
            printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
            return EXIT_FAILED;
      }

      sd = cli_query_secdesc(cli, fnum, ctx);

      if (!sd) {
            printf("ERROR: secdesc query failed: %s\n", cli_errstr(cli));
            return EXIT_FAILED;
      }

      sec_desc_print(stdout, sd);

      cli_close(cli, fnum);

      return EXIT_OK;
}

/***************************************************** 
Change the ownership or group ownership of a file. Just
because the NT docs say this can't be done :-). JRA.
*******************************************************/

static int owner_set(struct cli_state *cli, enum chown_mode change_mode, 
                 char *filename, char *new_username)
{
      int fnum;
      DOM_SID sid;
      SEC_DESC *sd, *old;
      size_t sd_size;

      fnum = cli_nt_create(cli, filename, CREATE_ACCESS_READ);

      if (fnum == -1) {
            printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
            return EXIT_FAILED;
      }

      if (!StringToSid(&sid, new_username))
            return EXIT_PARSE_ERROR;

      old = cli_query_secdesc(cli, fnum, ctx);

      cli_close(cli, fnum);

      if (!old) {
            printf("owner_set: Failed to query old descriptor\n");
            return EXIT_FAILED;
      }

      sd = make_sec_desc(ctx,old->revision,
                        (change_mode == REQUEST_CHOWN) ? &sid : old->owner_sid,
                        (change_mode == REQUEST_CHGRP) ? &sid : old->grp_sid,
                     NULL, old->dacl, &sd_size);

      fnum = cli_nt_create(cli, filename, CREATE_ACCESS_WRITE);

      if (fnum == -1) {
            printf("Failed to open %s: %s\n", filename, cli_errstr(cli));
            return EXIT_FAILED;
      }

      if (!cli_set_secdesc(cli, fnum, sd)) {
            printf("ERROR: secdesc set failed: %s\n", cli_errstr(cli));
      }

      cli_close(cli, fnum);

      return EXIT_OK;
}


/* The MSDN is contradictory over the ordering of ACE entries in an ACL.
   However NT4 gives a "The information may have been modified by a
   computer running Windows NT 5.0" if denied ACEs do not appear before
   allowed ACEs. */

static int ace_compare(SEC_ACE *ace1, SEC_ACE *ace2)
{
      if (sec_ace_equal(ace1, ace2)) 
            return 0;

      if (ace1->type != ace2->type) 
            return ace2->type - ace1->type;

      if (sid_compare(&ace1->trustee, &ace2->trustee)) 
            return sid_compare(&ace1->trustee, &ace2->trustee);

      if (ace1->flags != ace2->flags) 
            return ace1->flags - ace2->flags;

      if (ace1->info.mask != ace2->info.mask) 
            return ace1->info.mask - ace2->info.mask;

      if (ace1->size != ace2->size) 
            return ace1->size - ace2->size;

      return memcmp(ace1, ace2, sizeof(SEC_ACE));
}

static void sort_acl(SEC_ACL *the_acl)
{
      uint32 i;
      if (!the_acl) return;

      qsort(the_acl->ace, the_acl->num_aces, sizeof(the_acl->ace[0]), QSORT_CAST ace_compare);

      for (i=1;i<the_acl->num_aces;) {
            if (sec_ace_equal(&the_acl->ace[i-1], &the_acl->ace[i])) {
                  int j;
                  for (j=i; j<the_acl->num_aces-1; j++) {
                        the_acl->ace[j] = the_acl->ace[j+1];
                  }
                  the_acl->num_aces--;
            } else {
                  i++;
            }
      }
}

/***************************************************** 
set the ACLs on a file given an ascii description
*******************************************************/
static int cacl_set(struct cli_state *cli, char *filename, 
                char *the_acl, enum acl_mode mode)
{
      int fnum;
      SEC_DESC *sd, *old;
      uint32 i, j;
      size_t sd_size;
      int result = EXIT_OK;

      sd = sec_desc_parse(the_acl);

      if (!sd) return EXIT_PARSE_ERROR;
      if (test_args) return EXIT_OK;

      /* The desired access below is the only one I could find that works
         with NT4, W2KP and Samba */

      fnum = cli_nt_create(cli, filename, CREATE_ACCESS_READ);

      if (fnum == -1) {
            printf("cacl_set failed to open %s: %s\n", filename, cli_errstr(cli));
            return EXIT_FAILED;
      }

      old = cli_query_secdesc(cli, fnum, ctx);

      if (!old) {
            printf("calc_set: Failed to query old descriptor\n");
            return EXIT_FAILED;
      }

      cli_close(cli, fnum);

      /* the logic here is rather more complex than I would like */
      switch (mode) {
      case SMB_ACL_DELETE:
            for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
                  BOOL found = False;

                  for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
                        if (sec_ace_equal(&sd->dacl->ace[i],
                                      &old->dacl->ace[j])) {
                              uint32 k;
                              for (k=j; k<old->dacl->num_aces-1;k++) {
                                    old->dacl->ace[k] = old->dacl->ace[k+1];
                              }
                              old->dacl->num_aces--;
                              if (old->dacl->num_aces == 0) {
                                    SAFE_FREE(old->dacl->ace);
                                    SAFE_FREE(old->dacl);
                                    old->off_dacl = 0;
                              }
                              found = True;
                              break;
                        }
                  }

                  if (!found) {
                        printf("ACL for ACE:"); 
                        print_ace(stdout, &sd->dacl->ace[i]);
                        printf(" not found\n");
                  }
            }
            break;

      case SMB_ACL_MODIFY:
            for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
                  BOOL found = False;

                  for (j=0;old->dacl && j<old->dacl->num_aces;j++) {
                        if (sid_equal(&sd->dacl->ace[i].trustee,
                                    &old->dacl->ace[j].trustee)) {
                              old->dacl->ace[j] = sd->dacl->ace[i];
                              found = True;
                        }
                  }

                  if (!found) {
                        fstring str;

                        SidToString(str, &sd->dacl->ace[i].trustee);
                        printf("ACL for SID %s not found\n", str);
                  }
            }

            break;

      case SMB_ACL_ADD:
            for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
                  add_ace(&old->dacl, &sd->dacl->ace[i]);
            }
            break;

      case SMB_ACL_SET:
            old = sd;
            break;
      }

      /* Denied ACE entries must come before allowed ones */
      sort_acl(old->dacl);

      /* Create new security descriptor and set it */
      sd = make_sec_desc(ctx,old->revision, old->owner_sid, old->grp_sid, 
                     NULL, old->dacl, &sd_size);

      fnum = cli_nt_create(cli, filename, CREATE_ACCESS_WRITE);

      if (fnum == -1) {
            printf("cacl_set failed to open %s: %s\n", filename, cli_errstr(cli));
            return EXIT_FAILED;
      }

      if (!cli_set_secdesc(cli, fnum, sd)) {
            printf("ERROR: secdesc set failed: %s\n", cli_errstr(cli));
            result = EXIT_FAILED;
      }

      /* Clean up */

      cli_close(cli, fnum);

      return result;
}


/***************************************************** 
return a connection to a server
*******************************************************/
struct cli_state *connect_one(char *share)
{
      struct cli_state *c;
      struct nmb_name called, calling;
      struct in_addr ip;
      extern pstring global_myname;

      fstrcpy(server,share+2);
      share = strchr(server,'\\');
      if (!share) return NULL;
      *share = 0;
      share++;

      zero_ip(&ip);

      make_nmb_name(&calling, global_myname, 0x0);
      make_nmb_name(&called , server, 0x20);

 again:
      zero_ip(&ip);

      /* have to open a new connection */
      if (!(c=cli_initialise(NULL)) || !cli_connect(c, server, &ip)) {
            DEBUG(0,("Connection to %s failed\n", server));
            cli_shutdown(c);
            return NULL;
      }

      if (!cli_session_request(c, &calling, &called)) {
            DEBUG(0,("session request to %s failed\n", called.name));
            cli_shutdown(c);
            if (strcmp(called.name, "*SMBSERVER")) {
                  make_nmb_name(&called , "*SMBSERVER", 0x20);
                  goto again;
            }
            return NULL;
      }

      DEBUG(4,(" session request ok\n"));

      if (!cli_negprot(c)) {
            DEBUG(0,("protocol negotiation failed\n"));
            cli_shutdown(c);
            return NULL;
      }

      if (!got_pass) {
            char *pass;

            pass = (char *)getpass("Password: ");
            if (pass) {
                  pstrcpy(password, pass);
            }
      }

      if (!cli_session_setup(c, username, 
                         password, strlen(password),
                         password, strlen(password),
                         (workgroup[0] ? workgroup : lp_workgroup()))) {
            DEBUG(0,("session setup failed: %s\n", cli_errstr(c)));
            cli_shutdown(c);
            return NULL;
      }

      DEBUG(4,(" session setup ok\n"));

      if (!cli_send_tconX(c, share, "?????",
                      password, strlen(password)+1)) {
            DEBUG(0,("tree connect failed: %s\n", cli_errstr(c)));
            cli_shutdown(c);
            return NULL;
      }

      DEBUG(4,(" tconx ok\n"));

      return c;
}


static void usage(void)
{
      printf("Usage: smbcacls //server1/share1 filename [options]\n");
      printf("Version: %s\n", VERSION);
      printf("\n");
      printf("\t-D <acls>               delete an acl\n");
      printf("\t-M <acls>               modify an acl\n");
      printf("\t-A <acls>               add an acl\n");
      printf("\t-S <acls>               set acls\n");
      printf("\t-C username             change ownership of a file\n");
      printf("\t-G username             change group ownership of a file\n");
      printf("\t-n                      don't resolve sids or masks to names\n");
      printf("\t-h                      print help\n");
      printf("\t-d debuglevel           set debug output level\n");
      printf("\t-U username             user to autheticate as\n");
      printf("\t-W workgroup or domain  workgroup or domain user is in\n");
      printf("\n");
      printf("The username can be of the form username%%password or\n");
      printf("workgroup\\username%%password.\n\n");
      printf("An acl is of the form ACL:<SID>:type/flags/mask\n");
      printf("You can string acls together with spaces, commas or newlines\n");
}

/****************************************************************************
  main program
****************************************************************************/
 int main(int argc,char *argv[])
{
      char *share;
      pstring filename;
      extern char *optarg;
      extern int optind;
      extern FILE *dbf;
      int opt;
      char *p;
      static pstring servicesf = CONFIGFILE;
      struct cli_state *cli=NULL;
      enum acl_mode mode = SMB_ACL_SET;
      char *the_acl = NULL;
      enum chown_mode change_mode = REQUEST_NONE;
      int result;

      ctx=talloc_init();

      setlinebuf(stdout);

      dbf = stderr;

      if (argc < 3 || argv[1][0] == '-') {
            usage();
            talloc_destroy(ctx);
            exit(EXIT_PARSE_ERROR);
      }

      setup_logging(argv[0],True);

      share = argv[1];
      pstrcpy(filename, argv[2]);
      all_string_sub(share,"/","\\",0);

      argc -= 2;
      argv += 2;

      TimeInit();
      charset_initialise();

      lp_load(servicesf,True,False,False);
      codepage_initialise(lp_client_code_page());
      load_interfaces();

      if (getenv("USER")) {
            pstrcpy(username,getenv("USER"));

            if ((p=strchr(username,'%'))) {
                  *p = 0;
                  pstrcpy(password,p+1);
                  got_pass = True;
                  memset(strchr(getenv("USER"), '%') + 1, 'X',
                         strlen(password));
            }
      }

      while ((opt = getopt(argc, argv, "U:nhdS:D:A:M:C:G:t")) != EOF) {
            switch (opt) {
            case 'U':
                  pstrcpy(username,optarg);
                  p = strchr(username,'%');
                  if (p) {
                        *p = 0;
                        pstrcpy(password, p+1);
                        got_pass = 1;
                  }
                  break;

                case 'W':
                        pstrcpy(workgroup, optarg);
                        break;

            case 'S':
                  the_acl = optarg;
                  mode = SMB_ACL_SET;
                  break;

            case 'D':
                  the_acl = optarg;
                  mode = SMB_ACL_DELETE;
                  break;

            case 'M':
                  the_acl = optarg;
                  mode = SMB_ACL_MODIFY;
                  break;

            case 'A':
                  the_acl = optarg;
                  mode = SMB_ACL_ADD;
                  break;

            case 'C':
                  pstrcpy(owner_username,optarg);
                  change_mode = REQUEST_CHOWN;
                  break;

            case 'G':
                  pstrcpy(owner_username,optarg);
                  change_mode = REQUEST_CHGRP;
                  break;

            case 'n':
                  numeric = 1;
                  break;

            case 't':
                  test_args = 1;
                  break;

            case 'h':
                  usage();
                  talloc_destroy(ctx);
                  exit(EXIT_PARSE_ERROR);

            case 'd':
                  DEBUGLEVEL = atoi(optarg);
                  break;

            default:
                  printf("Unknown option %c (%d)\n", (char)opt, opt);
                  talloc_destroy(ctx);
                  exit(EXIT_PARSE_ERROR);
            }
      }

      argc -= optind;
      argv += optind;
      
      if (argc > 0) {
            usage();
            talloc_destroy(ctx);
            exit(EXIT_PARSE_ERROR);
      }

      /* Make connection to server */

      if (!test_args) {
            cli = connect_one(share);
            if (!cli) {
                  talloc_destroy(ctx);
                  exit(EXIT_FAILED);
            }
      }

      all_string_sub(filename, "/", "\\", 0);
      if (filename[0] != '\\') {
            pstring s;
            s[0] = '\\';
            safe_strcpy(&s[1], filename, sizeof(pstring)-1);
            pstrcpy(filename, s);
      }

      /* Perform requested action */

      if (change_mode != REQUEST_NONE) {
            result = owner_set(cli, change_mode, filename, owner_username);
      } else if (the_acl) {
            result = cacl_set(cli, filename, the_acl, mode);
      } else {
            result = cacl_dump(cli, filename);
      }

      talloc_destroy(ctx);

      return result;
}

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