utils/smbcacls.c

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/* 
   Unix SMB/CIFS implementation.
   ACL get/set utility
   
   Copyright (C) Andrew Tridgell 2000
   Copyright (C) Tim Potter      2000
   Copyright (C) Jeremy Allison  2000
   Copyright (C) Jelmer Vernooij 2003
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"

static pstring owner_username;
static fstring server;
static int test_args = False;
static TALLOC_CTX *ctx;

#define CREATE_ACCESS_READ READ_CONTROL_ACCESS

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

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

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

static struct cli_state *global_hack_cli;
static struct rpc_pipe_client *global_pipe_hnd;
static POLICY_HND pol;
static BOOL got_policy_hnd;

static struct cli_state *connect_one(const char *share);

/* Open cli connection and policy handle */

static BOOL cacls_open_policy_hnd(void)
{
        /* Initialise cli LSA connection */

        if (!global_hack_cli) {
                NTSTATUS ret;
                global_hack_cli = connect_one("IPC$");
                global_pipe_hnd = cli_rpc_pipe_open_noauth(global_hack_cli, PI_LSARPC, &ret);
                if (!global_pipe_hnd) {
                                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(rpccli_lsa_open_policy(global_pipe_hnd, global_hack_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;
        enum lsa_SidType *types = NULL;

        sid_to_string(str, sid);

        if (numeric) return;

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

        if (!cacls_open_policy_hnd() ||
            !NT_STATUS_IS_OK(rpccli_lsa_lookup_sids(global_pipe_hnd, global_hack_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)
{
        enum lsa_SidType *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(rpccli_lsa_lookup_names(global_pipe_hnd, global_hack_cli->mem_ctx, 
                                                  &pol, 1, &str, NULL, &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)
{
        const 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->access_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->access_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->access_mask;

 again:
        for (v = special_values; v->perm; v++) {
                if ((ace->access_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->access_mask);
                } else {
                        do_print = 1;
                        goto again;
                }
        }
}


/* parse an ACE in the same format as print_ace() */
static BOOL parse_ace(SEC_ACE *ace, const char *orig_str)
{
        char *p;
        const char *cp;
        fstring tok;
        unsigned int atype = 0;
        unsigned int aflags = 0;
        unsigned int amask = 0;
        DOM_SID sid;
        SEC_ACCESS mask;
        const struct perm_value *v;
        char *str = SMB_STRDUP(orig_str);

        if (!str) {
                return False;
        }

        ZERO_STRUCTP(ace);
        p = strchr_m(str,':');
        if (!p) {
                printf("ACE '%s': missing ':'.\n", orig_str);
                SAFE_FREE(str);
                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)) {
                printf("ACE '%s': failed to convert '%s' to SID\n",
                        orig_str, str);
                SAFE_FREE(str);
                return False;
        }

        cp = p;
        if (!next_token(&cp, tok, "/", sizeof(fstring))) {
                printf("ACE '%s': failed to find '/' character.\n",
                        orig_str);
                SAFE_FREE(str);
                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 {
                printf("ACE '%s': missing 'ALLOWED' or 'DENIED' entry at '%s'\n",
                        orig_str, tok);
                SAFE_FREE(str);
                return False;
        }

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

        if (!(next_token(&cp, tok, "/", sizeof(fstring)) &&
              sscanf(tok, "%i", &aflags))) {
                printf("ACE '%s': bad integer flags entry at '%s'\n",
                        orig_str, tok);
                SAFE_FREE(str);
                return False;
        }

        if (!next_token(&cp, tok, "/", sizeof(fstring))) {
                printf("ACE '%s': missing / at '%s'\n",
                        orig_str, tok);
                SAFE_FREE(str);
                return False;
        }

        if (strncmp(tok, "0x", 2) == 0) {
                if (sscanf(tok, "%i", &amask) != 1) {
                        printf("ACE '%s': bad hex number at '%s'\n",
                                orig_str, tok);
                        SAFE_FREE(str);
                        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) {
                        printf("ACE '%s': bad permission value at '%s'\n",
                                orig_str, p);
                        SAFE_FREE(str);
                        return False;
                }
                p++;
        }

        if (*p) {
                SAFE_FREE(str);
                return False;
        }

 done:
        mask = amask;
        init_sec_ace(ace, &sid, atype, mask, aflags);
        SAFE_FREE(str);
        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_ace;
        SEC_ACE *aces;
        if (! *the_acl) {
                return (((*the_acl) = make_sec_acl(ctx, 3, 1, ace)) != NULL);
        }

        if (!(aces = SMB_CALLOC_ARRAY(SEC_ACE, 1+(*the_acl)->num_aces))) {
                return False;
        }
        memcpy(aces, (*the_acl)->aces, (*the_acl)->num_aces * sizeof(SEC_ACE));
        memcpy(aces+(*the_acl)->num_aces, ace, sizeof(SEC_ACE));
        new_ace = make_sec_acl(ctx,(*the_acl)->revision,1+(*the_acl)->num_aces, aces);
        SAFE_FREE(aces);
        (*the_acl) = new_ace;
        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 = NULL;
        size_t sd_size;
        DOM_SID *group_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) {
                        if (owner_sid) {
                                printf("Only specify owner once\n");
                                goto done;
                        }
                        owner_sid = SMB_CALLOC_ARRAY(DOM_SID, 1);
                        if (!owner_sid ||
                            !StringToSid(owner_sid, tok+6)) {
                                printf("Failed to parse owner sid\n");
                                goto done;
                        }
                        continue;
                }

                if (strncmp(tok,"GROUP:", 6) == 0) {
                        if (group_sid) {
                                printf("Only specify group once\n");
                                goto done;
                        }
                        group_sid = SMB_CALLOC_ARRAY(DOM_SID, 1);
                        if (!group_sid ||
                            !StringToSid(group_sid, tok+6)) {
                                printf("Failed to parse group sid\n");
                                goto done;
                        }
                        continue;
                }

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

                printf("Failed to parse token '%s' in security descriptor,\n", tok);
                goto done;
        }

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

  done:
        SAFE_FREE(group_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;

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

        /* Print owner and group sid */

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

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

        if (sd->group_sid) {
                SidToString(sidstr, sd->group_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->aces[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 result = EXIT_FAILED;
        int fnum = -1;
        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));
                goto done;
        }

        sd = cli_query_secdesc(cli, fnum, ctx);

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

        sec_desc_print(stdout, sd);

        result = EXIT_OK;

done:
        if (fnum != -1)
                cli_close(cli, fnum);

        return result;
}

/***************************************************** 
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, old->type,
                                (change_mode == REQUEST_CHOWN) ? &sid : NULL,
                                (change_mode == REQUEST_CHGRP) ? &sid : NULL,
                           NULL, NULL, &sd_size);

        fnum = cli_nt_create(cli, filename, WRITE_OWNER_ACCESS);

        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->access_mask != ace2->access_mask) 
                return ace1->access_mask - ace2->access_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->aces, the_acl->num_aces, sizeof(the_acl->aces[0]), QSORT_CAST ace_compare);

        for (i=1;i<the_acl->num_aces;) {
                if (sec_ace_equal(&the_acl->aces[i-1], &the_acl->aces[i])) {
                        int j;
                        for (j=i; j<the_acl->num_aces-1; j++) {
                                the_acl->aces[j] = the_acl->aces[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->aces[i],
                                                  &old->dacl->aces[j])) {
                                        uint32 k;
                                        for (k=j; k<old->dacl->num_aces-1;k++) {
                                                old->dacl->aces[k] = old->dacl->aces[k+1];
                                        }
                                        old->dacl->num_aces--;
                                        found = True;
                                        break;
                                }
                        }

                        if (!found) {
                                printf("ACL for ACE:"); 
                                print_ace(stdout, &sd->dacl->aces[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->aces[i].trustee,
                                              &old->dacl->aces[j].trustee)) {
                                        old->dacl->aces[j] = sd->dacl->aces[i];
                                        found = True;
                                }
                        }

                        if (!found) {
                                fstring str;

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

                if (sd->owner_sid) {
                        old->owner_sid = sd->owner_sid;
                }

                if (sd->group_sid) { 
                        old->group_sid = sd->group_sid;
                }

                break;

        case SMB_ACL_ADD:
                for (i=0;sd->dacl && i<sd->dacl->num_aces;i++) {
                        add_ace(&old->dacl, &sd->dacl->aces[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 */

        /* We used to just have "WRITE_DAC_ACCESS" without WRITE_OWNER.
           But if we're sending an owner, even if it's the same as the one
           that already exists then W2K3 insists we open with WRITE_OWNER access.
           I need to check that setting a SD with no owner set works against WNT
           and W2K. JRA.
        */

        sd = make_sec_desc(ctx,old->revision, old->type, old->owner_sid, old->group_sid,
                           NULL, old->dacl, &sd_size);

        fnum = cli_nt_create(cli, filename, WRITE_DAC_ACCESS|WRITE_OWNER_ACCESS);

        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
*******************************************************/
static struct cli_state *connect_one(const char *share)
{
        struct cli_state *c;
        struct in_addr ip;
        NTSTATUS nt_status;
        zero_ip(&ip);
        
        if (!cmdline_auth_info.got_pass) {
                char *pass = getpass("Password: ");
                if (pass) {
                        pstrcpy(cmdline_auth_info.password, pass);
                        cmdline_auth_info.got_pass = True;
                }
        }

        if (NT_STATUS_IS_OK(nt_status = cli_full_connection(&c, global_myname(), server, 
                                                            &ip, 0,
                                                            share, "?????",  
                                                            cmdline_auth_info.username, lp_workgroup(),
                                                            cmdline_auth_info.password,
                                                            cmdline_auth_info.use_kerberos ? CLI_FULL_CONNECTION_USE_KERBEROS : 0,
                                                            cmdline_auth_info.signing_state, NULL))) {
                return c;
        } else {
                DEBUG(0,("cli_full_connection failed! (%s)\n", nt_errstr(nt_status)));
                return NULL;
        }
}

/****************************************************************************
  main program
****************************************************************************/
 int main(int argc, const char *argv[])
{
        char *share;
        int opt;
        enum acl_mode mode = SMB_ACL_SET;
        static char *the_acl = NULL;
        enum chown_mode change_mode = REQUEST_NONE;
        int result;
        fstring path;
        pstring filename;
        poptContext pc;
        struct poptOption long_options[] = {
                POPT_AUTOHELP
                { "delete", 'D', POPT_ARG_STRING, NULL, 'D', "Delete an acl", "ACL" },
                { "modify", 'M', POPT_ARG_STRING, NULL, 'M', "Modify an acl", "ACL" },
                { "add", 'a', POPT_ARG_STRING, NULL, 'a', "Add an acl", "ACL" },
                { "set", 'S', POPT_ARG_STRING, NULL, 'S', "Set acls", "ACLS" },
                { "chown", 'C', POPT_ARG_STRING, NULL, 'C', "Change ownership of a file", "USERNAME" },
                { "chgrp", 'G', POPT_ARG_STRING, NULL, 'G', "Change group ownership of a file", "GROUPNAME" },
                { "numeric", 0, POPT_ARG_NONE, &numeric, True, "Don't resolve sids or masks to names" },
                { "test-args", 't', POPT_ARG_NONE, &test_args, True, "Test arguments"},
                POPT_COMMON_SAMBA
                POPT_COMMON_CREDENTIALS
                { NULL }
        };

        struct cli_state *cli;

        load_case_tables();

        ctx=talloc_init("main");

        /* set default debug level to 1 regardless of what smb.conf sets */
        setup_logging( "smbcacls", True );
        DEBUGLEVEL_CLASS[DBGC_ALL] = 1;
        dbf = x_stderr;
        x_setbuf( x_stderr, NULL );

        setlinebuf(stdout);

        lp_load(dyn_CONFIGFILE,True,False,False,True);
        load_interfaces();

        pc = poptGetContext("smbcacls", argc, argv, long_options, 0);
        
        poptSetOtherOptionHelp(pc, "//server1/share1 filename\nACLs look like: "
                "'ACL:user:[ALLOWED|DENIED]/flags/permissions'");

        while ((opt = poptGetNextOpt(pc)) != -1) {
                switch (opt) {
                case 'S':
                        the_acl = smb_xstrdup(poptGetOptArg(pc));
                        mode = SMB_ACL_SET;
                        break;

                case 'D':
                        the_acl = smb_xstrdup(poptGetOptArg(pc));
                        mode = SMB_ACL_DELETE;
                        break;

                case 'M':
                        the_acl = smb_xstrdup(poptGetOptArg(pc));
                        mode = SMB_ACL_MODIFY;
                        break;

                case 'a':
                        the_acl = smb_xstrdup(poptGetOptArg(pc));
                        mode = SMB_ACL_ADD;
                        break;

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

                case 'G':
                        pstrcpy(owner_username,poptGetOptArg(pc));
                        change_mode = REQUEST_CHGRP;
                        break;
                }
        }

        /* Make connection to server */
        if(!poptPeekArg(pc)) { 
                poptPrintUsage(pc, stderr, 0);
                return -1;
        }
        
        fstrcpy(path, poptGetArg(pc));
        
        if(!poptPeekArg(pc)) { 
                poptPrintUsage(pc, stderr, 0);  
                return -1;
        }
        
        pstrcpy(filename, poptGetArg(pc));

        all_string_sub(path,"/","\\",0);

        fstrcpy(server,path+2);
        share = strchr_m(server,'\\');
        if (!share) {
                share = strchr_m(server,'/');
                if (!share) {
                        printf("Invalid argument: %s\n", share);
                        return -1;
                }
        }

        *share = 0;
        share++;

        if (!test_args) {
                cli = connect_one(share);
                if (!cli) {
                        talloc_destroy(ctx);
                        exit(EXIT_FAILED);
                }
        } else {
                exit(0);
        }

        all_string_sub(filename, "/", "\\", 0);
        if (filename[0] != '\\') {
                pstring s;
                s[0] = '\\';
                safe_strcpy(&s[1], filename, sizeof(pstring)-2);
                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;
}

---