source: trunk/client/src/smbwrp.c

/* 
   Netdrive Samba client plugin
   samba library wrappers
   Copyright (C) netlabs.org 2003-2012
   Copyright (C) bww bitwise works GmbH 2012-2016

   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"
#include "rpc_client/cli_pipe.h"
#include "librpc/gen_ndr/ndr_srvsvc_c.h"
#include "libsmb/libsmb.h"
#include "libsmb/clirap.h"
#include "trans2.h"

#include "dircache.h"
#include "smbwrp.h"

/*
 * Wrapper for cli_errno to return not connected error on negative fd
 * Now returns an OS/2 return code instead of lerrno.
 */
int os2cli_errno(cli_state * cli)
{
        if (cli->fd == -1)
           return maperror(ENOTCONN);

        return maperror(cli_errno(cli));
}

void smbwrp_Logging(Resource *pRes)
{
        if (pRes && pRes->loglevel > 0)
        {
           // init samba for debug messages
           setup_logging("ndpsmb", DEBUG_FILE);

           char smblevel[3];
           itoa(pRes->loglevel, smblevel, 10);
           lp_set_logfile(pRes->smb_logfile);
           lp_set_cmdline("log level", smblevel);
           reopen_logs();
        }

        return;
}

const char * smbwrp_getVersion()
{
        return samba_version_string();
}

int _System smbwrp_getclisize(void)
{
        return sizeof(struct cli_state);
}

/* 
 * initialise structures
 */
int _System smbwrp_init(Resource *pRes)
{
        char *p;

        if (pRes->smb_initialised) 
           return 0;

        pRes->smb_initialised = 1;

        lp_set_in_client(true); // Make sure that we tell lp_load we are client

        load_case_tables();

        if (!lp_load(get_dyn_CONFIGFILE(),true,false,false,true))
           debuglocal(pRes, 0,("The initial smb.conf is missing, defaults are used!\n"));

        load_interfaces();

        if (!init_names())
           return 1;

        smbwrp_Logging(pRes);

        debuglocal(pRes, 5,("smbwrp_init done\n"));
        /*
        if ((p=smbw_getshared("RESOLVE_ORDER")))
           lp_set_name_resolve_order(p);
        */
        return 0;

}

void smbwrp_initthread(void)
{
        /*
         * Block SIGPIPE (from lib/util_sock.c: write())
         * It is not needed and should not stop execution
        */
        BlockSignals(True, SIGPIPE);
        return;
}

#if 0
/*
 * remove redundent stuff from a filename
 */
void clean_fname(char *name)
{
        char *p, *p2;
        int l;
        int modified = 1;

        if (!name) return;

        while (modified) {
           modified = 0;

           if ((p=strstr(name,"/./"))) {
              modified = 1;
              while (*p) {
                 p[0] = p[2];
                 p++;
              }
           }

           if ((p=strstr(name,"//"))) {
              modified = 1;
              while (*p) {
                 p[0] = p[1];
                 p++;
              }
           }

           if (strcmp(name,"/../")==0) {
              modified = 1;
              name[1] = 0;
           }

           if ((p=strstr(name,"/../"))) {
              modified = 1;
              for (p2=(p>name?p-1:p);p2>name;p2--) {
                 if (p2[0] == '/')
                    break;
              }
              while (*p2) {
                 p2[0] = p2[3];
                 p2++;
              }
           }

           if (strcmp(name,"/..")==0) {
              modified = 1;
              name[1] = 0;
           }

           l = strlen(name);
           p = l >= 3 ? (name+l-3):name;
           if (strcmp(p,"/..")==0) {
              modified = 1;
              for (p2=p-1;p2>name;p2--) {
                 if (p2[0] == '/')
                    break;
              }
              if (p2==name) {
                 p[0] = '/';
                 p[1] = 0;
              } else
                 p2[0] = 0;
           }

           l = strlen(name);
           p = l >= 2 ? (name+l-2):name;
           if (strcmp(p,"/.")==0) {
              if (p == name)
                 p[1] = 0;
              else
                 p[0] = 0;
           }

           if (strncmp(p=name,"./",2) == 0) {      
              modified = 1;
              do {
                 p[0] = p[2];
              } while (*p++);
           }

           l = strlen(p=name);
           if (l > 1 && p[l-1] == '/') {
              modified = 1;
              p[l-1] = 0;
           }
        }
}
#endif

/*
 * return a connection to a server
 */
int _System smbwrp_connect(Resource* pRes, cli_state ** cli)
{
        smbwrp_server * srv = &pRes->srv;
        char * server = srv->server_name;
        char * share = *(srv->share_name) ? srv->share_name : "IPC$";
        char * workgroup = srv->workgroup;
        struct nmb_name called, calling;
        char *p, *server_n = server;
        fstring group;
        struct sockaddr_storage ss;
        struct cli_state * c;
        char* dev_type;
        int loginerror = 0;
        NTSTATUS status;

        zero_sockaddr(&ss);

        debuglocal(pRes, 1,"Connecting to \\\\%s:*********@%s:%s\\%s. Master %s:%d\n", srv->username,  workgroup, server, share, srv->master, srv->ifmastergroup);

        if (!*server) {
           struct sockaddr_storage sip;

           if (*workgroup)
           {
              if (!find_master_ip(workgroup, &sip))
                 return 1;

              fstrcpy(group, inet_ntoa(sip.sin_addr));
              server_n = group;
           } else if (*srv->master)
           {
              if (srv->ifmastergroup)
              {
                 if (!find_master_ip(srv->master, &sip))
                    return 11;

                 strncpy(srv->master, inet_ntoa(sip.sin_addr), sizeof(srv->master) - 1);
                 srv->ifmastergroup = 0;
              }
              server_n = srv->master;
           } else
              return 10;                
        }

        make_nmb_name(&calling, global_myname(), 0x0);
        //make_nmb_name(&calling, "WORK", 0x0); // this machine name
        make_nmb_name(&called , server_n, 0x20);

 again:
        zero_sockaddr(&ss);

        // have to open a new connection
        if (!(c=cli_initialise()))
           return 2;

        cli_set_timeout(c, 10000); // 10 seconds

        if (pRes->krb5support == 1)
        {
           debuglocal(pRes, 1,"Kerberos support enabled\n");
           c->use_kerberos = True;
        }

        if (!NT_STATUS_IS_OK(cli_connect(c, server_n, &ss))) 
           return 3;

        if (!cli_session_request(c, &calling, &called)) {
           cli_shutdown(c);
           if (strcmp(called.name, "*SMBSERVER")) {
              make_nmb_name(&called , "*SMBSERVER", 0x20);
              goto again;
           }
              return 4;
        }

        debuglocal(pRes, 4,"session request ok\n");

        if (!NT_STATUS_IS_OK(cli_negprot(c))) {
           cli_shutdown(c);
           return 5;
        }

        debuglocal(pRes, 4,"session setuping for <%s>/<********> in <%s> %08x %08x %08x\n", srv->username,  workgroup, c->protocol, c->sec_mode, c->capabilities);

        if (!NT_STATUS_IS_OK(cli_session_setup(c, srv->username, 
              srv->password, strlen(srv->password),
              srv->password, strlen(srv->password),
              workgroup)))
        {
           debuglocal(pRes, 4,"%s/******** login failed\n", srv->username);
           loginerror = 1; // save the login error

           // try an anonymous login if it failed
           if (!NT_STATUS_IS_OK(cli_session_setup(c, "", "", 0,"", 0, workgroup))) {
              debuglocal(pRes, 4,"Anonymous login failed\n");
              cli_shutdown(c);
              return 6;
           }
           debuglocal(pRes, 4,"Anonymous login successful\n");
           status = cli_init_creds(c, "", lp_workgroup(), "");
        } else {
           status = cli_init_creds(c, srv->username, workgroup, srv->password);
        }

        if (!NT_STATUS_IS_OK(status)) {
           debuglocal(pRes, 4,"cli_init_creds() failed\n");
           cli_shutdown(c);
           // if loginerror is != 0 means normal login failed, but anonymous login worked
           if (loginerror !=0)
              return 6;
           else
              return 7;
        }

        debuglocal(pRes, 4,"session setup ok. Sending tconx <%s> <********>\n", share);

        // YD ticket:58 we need to check resource type to avoid connecting to printers.
        // dev type is set to IPC for IPC$, A: for everything else (printers use LPT1:)
        if (!strcmp( share, "IPC$"))
           dev_type = "IPC";
        else
           dev_type = "A:";

        if (!NT_STATUS_IS_OK(cli_tcon_andx(c, share, dev_type,
            srv->password, strlen(srv->password)+1)))
        {
           cli_shutdown(c);
           // if loginerror is != 0 means normal login failed, but anonymous login worked
           if (loginerror !=0)
              return 6;
           else
              return 7;
        }

        debuglocal(pRes, 4,"tconx ok. cli caps %08x\n", c->capabilities);
        
        // save cli_state pointer
        *cli = c;

        return 0;
}

/*
 * close a connection to a server
 */
void _System smbwrp_disconnect(Resource* pRes, cli_state * cli)
{
        // this call will free all buffers, close handles and free cli mem
        if (pRes && cli)
           cli_shutdown( cli);
}

/*
 * a wrapper for open()
 */
int _System smbwrp_open(Resource *pRes, cli_state * cli, smbwrp_file * file)
{
        uint16_t fd = 0;

        if (!cli || !file || !*file->fname) 
           return maperror(EINVAL);

        if (file->denymode < DENY_ALL || file->denymode > DENY_NONE)
           file->denymode = DENY_NONE;

        debuglocal(pRes, 4,"cli_open(%s) attr %08x mode %02x denymode %02x\n", file->fname, file->openattr, file->openmode, file->denymode);
        if (!NT_STATUS_IS_OK(cli_open(cli, file->fname, file->openmode, file->denymode, &fd)))
           return os2cli_errno(cli);

        file->fd = fd;
        file->updatetime = 0;
        file->offset = 0;
        return 0;
}

/*
 * a wrapper for read()
 */
int _System smbwrp_read(Resource *pRes, cli_state * cli, smbwrp_file * file, void *buf, unsigned long count, unsigned long * result)
{
        int ret;

        if (!cli || !file || !buf || !result) 
           return maperror(EINVAL);
        
        *result = 0;
        ret = cli_read(cli, file->fd, buf, file->offset, count);
        if (ret == -1) 
           return os2cli_errno(cli);

        file->offset += ret;
        *result = ret;
        return 0;       
}

/*
 * a wrapper for write()
 */
int _System smbwrp_write(Resource *pRes, cli_state * cli, smbwrp_file * file, void *buf, unsigned long count, unsigned long * result)
{
        NTSTATUS status;
        size_t ret;

        if (!cli || !file || !buf || !result) 
           return maperror(EINVAL);
        
        *result = 0;
        debuglocal(pRes, 10, "Write %x %d %lld %d\n", cli, file->fd, file->offset, count);
        status = cli_writeall(cli, file->fd, 0, buf, file->offset, count, &ret);
        if (!NT_STATUS_IS_OK(status))
           return os2cli_errno(cli);

        file->updatetime = 1;
        file->offset += ret;
        *result = ret;
        return 0;       
}

/*
 * a wrapper for close()
 */
int _System smbwrp_close(Resource *pRes, cli_state * cli, smbwrp_file * file)
{
        int rc = 0;
        if (!cli || !file) 
           return maperror(EINVAL);

        debuglocal(pRes, 4,"smpwrp_close updatetime: %d\n", file->updatetime);

        if (file->updatetime == 1)
        {
           file->mtime = time(NULL);
           debuglocal(pRes, 4,"cli_close new mtime %lu\n", file->mtime);
        }
        
        if (!NT_STATUS_IS_OK(cli_close(cli, file->fd)))
           rc = os2cli_errno(cli);

        if (!rc && (file->openattr || file->mtime || file->ctime))
        {
           debuglocal(pRes, 4,"Set pathinfo on close %s %08x %d %d\n", file->fname, file->openattr, file->mtime, file->ctime);
           if (!NT_STATUS_IS_OK(cli_setpathinfo_basic(cli, file->fname, file->ctime, 0, file->mtime, 0, file->openattr)))
           {
              debuglocal(pRes, 4,"Set pathinfo on close failed %d\n", os2cli_errno(cli));
           }
        }

        file->openattr = 0;
        file->mtime = 0;
        file->ctime = 0;
        file->updatetime = 0;
        file->fd = -1;
        file->offset = 0;
        *file->fname = 0;
        return rc;
}

int _System smbwrp_setfilesize(Resource *pRes, cli_state * cli, smbwrp_file * file, long long newsize)
{
        int rc = 0;
        if (!cli || !file) 
           return maperror(EINVAL);

        debuglocal(pRes, 4,"cli_setnewfilesize(%s) %lld\n", file->fname, newsize);
        if (!NT_STATUS_IS_OK(cli_ftruncate(cli, file->fd, newsize)))
        {
           if (newsize)
              rc = os2cli_errno(cli);

           if (!NT_STATUS_IS_OK(cli_close(cli, file->fd)))
              return os2cli_errno(cli);

           uint16_t fd = 0;
           file->fd = -1;
           file->offset = 0;                    
           file->openmode &= ~(O_CREAT | O_EXCL);
           file->openmode |= O_TRUNC;
           debuglocal(pRes, 4,"cli_setnewfileszie : cli_open(%s) attr %08x mode %02x denymode %02x\n", file->fname, file->openattr, file->openmode, file->denymode);
           if (!NT_STATUS_IS_OK(cli_open(cli, file->fname, file->openmode, file->denymode, &fd)))
              return os2cli_errno(cli);

           file->fd = fd;
        }       
        return 0;
}

/*
 * a wrapper for rename()
 */
int _System smbwrp_rename(Resource *pRes, cli_state * cli, char *oldname, char *newname)
{
        if (!cli || !oldname || !newname)
           return maperror(EINVAL);

        debuglocal(pRes, 4,"Rename <%s> -> <%s>\n", oldname, newname);
        if (!NT_STATUS_IS_OK(cli_rename(cli, oldname, newname)))
           return os2cli_errno(cli);

        return 0;
}


/*
 * a wrapper for chmod()
 */
int _System smbwrp_setattr(Resource *pRes, cli_state * cli, smbwrp_fileinfo *finfo)
{
        if (!cli || !finfo || !*finfo->fname) 
           return maperror(EINVAL);

        debuglocal(pRes, 4,"Setting on <%s> attr %04x, time %lu (timezone /%lu\n", finfo->fname, finfo->attr, finfo->mtime, finfo->mtime + get_time_zone(finfo->mtime));
        // we already have gmt time, so no need to add timezone
        // if (!cli_setatr(cli, finfo->fname, finfo->attr, finfo->mtime + (finfo->mtime == 0 ? 0 : get_time_zone(finfo->mtime)))
        if (!NT_STATUS_IS_OK(cli_setatr(cli, finfo->fname, finfo->attr, finfo->mtime))
            && !NT_STATUS_IS_OK(cli_setatr(cli, finfo->fname, finfo->attr, 0)))
           return os2cli_errno(cli);
        
        return 0;
}

/*
 * a wrapper for unlink()
 */
int _System smbwrp_unlink(Resource *pRes, cli_state * cli, const char *fname)
{
        if (!cli || !fname) 
           return maperror(EINVAL);

#if 0
        if (strncmp(cli->dev, "LPT", 3) == 0)
        {
           int job = smbw_stat_printjob(cli, fname, NULL, NULL);
           if (job == -1) 
              goto failed;

        if (cli_printjob_del(cli, job) != 0) 
           goto failed;

        } else 
#endif
        if (!NT_STATUS_IS_OK(cli_unlink(cli, fname, aSYSTEM | aHIDDEN))) 
           return os2cli_errno(cli);

        return 0;
}

/*
 * a wrapper for lseek()
 */
int _System smbwrp_lseek(Resource *pRes, cli_state * cli, smbwrp_file * file, int whence, long long offset)
{
        off_t size;
        if (!cli || !file) 
           return maperror(EINVAL);

        debuglocal(pRes, 4,"lseek %d %lld %lld\n", whence, offset, file->offset);

        switch (whence) {
           case SEEK_SET:
              if (offset < 0)
                 return maperror(EINVAL);
              file->offset = offset;
              break;
           case SEEK_CUR:
              file->offset += offset;
              break;
           case SEEK_END:
              if (offset > 0)
                 return maperror(EINVAL);
              if (!NT_STATUS_IS_OK(cli_qfileinfo_basic(cli, file->fd, 
                  NULL, &size, NULL, NULL, NULL,NULL, NULL)) &&
                  !NT_STATUS_IS_OK(cli_getattrE(cli, file->fd, 
                  NULL, &size, NULL, NULL, NULL)))
                 return os2cli_errno(cli);
              file->offset = size + offset;
              break;
           default:
              return maperror(EINVAL);
        }

        return 0;
}

/*
 * try to do a QPATHINFO and if that fails then do a getatr
 * this is needed because win95 sometimes refuses the qpathinfo
 */
int _System smbwrp_getattr(Resource *pRes, smbwrp_server *srv, cli_state * cli, smbwrp_fileinfo *finfo)
{
        SMB_INO_T ino = 0;
        struct timespec ctime;
        struct timespec mtime;
        struct timespec atime;

        if (!cli || !finfo || !*finfo->fname) 
           return maperror(EINVAL);

        debuglocal(pRes, 4,"getattr %d %d <%s>\n", cli->capabilities & CAP_NOPATHINFO2, cli->capabilities & CAP_NT_SMBS, finfo->fname);
        if (!(cli->capabilities & CAP_NOPATHINFO2) &&
            NT_STATUS_IS_OK(cli_qpathinfo2(cli, finfo->fname, &ctime, &atime,
            &mtime, NULL, (off_t *)&finfo->size, (unsigned short *)&finfo->attr,
            &ino)))
        {
           finfo->attr &= 0x7F;
           finfo->ctime = convert_timespec_to_time_t(ctime);
           finfo->atime = convert_timespec_to_time_t(atime);
           finfo->mtime = convert_timespec_to_time_t(mtime);
           return 0;
        }

        // fd == -1 means the connection is broken */
        if (cli->fd == -1)
           return maperror(ENOTCONN);

        /* If the path is not on a share (it is a workgroup or a server),
         * then cli_qpathinfo2 obviously fails. Return some fake information
         * about the directory.
         */
        if (*srv->server_name == 0
            || (strcmp(cli->dev,"IPC") == 0)
            || *srv->share_name == 0 
            || (stricmp(srv->share_name,"IPC$") == 0)
            || (strncmp(cli->dev,"LPT",3) == 0)) 
        {
           debuglocal(pRes, 4,"getattr not a share.\n");
           *(time_t *)&finfo->ctime = time (NULL);
           *(time_t *)&finfo->atime = time (NULL);
           *(time_t *)&finfo->mtime = time (NULL);
           finfo->size = 0;
           finfo->easize = 0;
           finfo->attr = aDIR;
           return 0;
        }
        
        // if this is NT then don't bother with the getatr */
        if (cli->capabilities & CAP_NT_SMBS && !(cli->capabilities & CAP_NOPATHINFO2)) 
        {
           int ret = cli_errno(cli);
           /*
            * cli_qpathinfo* reports EINVAL when path of given file not exists
            * thus there is no real situation when EINVAL should be returned to 
            * client at this point, we just replace it to ENOTDIR
            */
           if (ret == EINVAL)
              ret = ENOTDIR;

           return maperror(ret);
        }

        if (NT_STATUS_IS_OK(cli_getatr(cli, finfo->fname, (unsigned short *)&finfo->attr, &finfo->size, (time_t *)&finfo->mtime)))
        {
           debuglocal(pRes, 10,("gotattr1 %08x <%s>\n", finfo->attr, finfo->fname));
           finfo->mtime -= get_time_zone(finfo->mtime);
           finfo->atime = finfo->atime;  //was mtime
           finfo->ctime = finfo->ctime;  //was mtime
           cli->capabilities &= CAP_NOPATHINFO2;
           return 0;
        }

        return os2cli_errno(cli);
}

/*
 * try to do a QPATHINFO and if that fails then do a getatr
 * this is needed because win95 sometimes refuses the qpathinfo
 */
int _System smbwrp_fgetattr(Resource *pRes, cli_state * cli, smbwrp_file *file, smbwrp_fileinfo *finfo)
{
        struct timespec ctime;
        struct timespec mtime;
        struct timespec atime;
        SMB_INO_T ino = 0;

        if (!cli || !file || !finfo) 
           return maperror(EINVAL);


        strncpy(finfo->fname, file->fname, sizeof(finfo->fname) - 1);
        if (!NT_STATUS_IS_OK(cli_qfileinfo_basic(cli, file->fd, 
            (unsigned short *)&finfo->attr, (off_t *)&finfo->size, &ctime,
            &atime, &mtime, NULL, &ino)))
        {
           if (!NT_STATUS_IS_OK(cli_getattrE(cli, file->fd, 
               (unsigned short *)&finfo->attr, (&finfo->size),
               (time_t *)&finfo->ctime, (time_t *)&finfo->atime,
               (time_t *)&finfo->mtime)))
              return os2cli_errno(cli);
           else
           {
              finfo->ctime -= get_time_zone(finfo->ctime);
              finfo->atime -= get_time_zone(finfo->atime);
              finfo->mtime -= get_time_zone(finfo->mtime);
           }
        }
        else
        {
           finfo->ctime = convert_timespec_to_time_t(ctime);
           finfo->atime = convert_timespec_to_time_t(atime);
           finfo->mtime = convert_timespec_to_time_t(mtime);
        }

        return 0;
}

// =============================DIRECTORY ROUTINES============================
                                                                                                                
/*
 * add a entry to a directory listing
 */
static void smbwrp_dir_add(const char* mnt, smbwrp_fileinfo *finfo, const char *mask, void *state)
{
        if (state && finfo)
        {
           filelist_state *st  = (filelist_state *)state;
           char fullname[ _MAX_PATH] = {0};
           debuglocal(st->pConn->pRes, 8,"adding <%s> %d %d %d\n", finfo->fname, sizeof(st->finfo), st->datalen, sizeof(st->finfo.fname));
           memcpy(&st->finfo, finfo, sizeof(st->finfo));
           strncpy(fullname, st->dir, strlen(st->dir));
           strncat(fullname, finfo->fname, sizeof(fullname) - strlen(fullname) -1);
           strncpy(st->finfo.fname, fullname, sizeof(st->finfo.fname));
           addFindInfoL(st->pConn->pRes, st->plist, &st->finfo, st->ulAttribute, st->dir_mask);
        }
        return;
}

static void smbwrp_special_add(const char * name, void * state)
{
smbwrp_fileinfo finfo = {0};

        if (!name)
           return;

        ZERO_STRUCT(finfo);

        strncpy(finfo.fname, name, sizeof(finfo.fname) - 1);
        finfo.attr = aRONLY | aDIR;

        smbwrp_dir_add("", &finfo, NULL, state);
        return;
}

static void smbwrp_printjob_add(struct print_job_info *job, void * state)
{
        smbwrp_fileinfo finfo = {0};

        ZERO_STRUCT(finfo);

        //printf("Printjob <%s>\n", job->name);

        strncpy(finfo.fname, job->name, sizeof(finfo.fname) - 1);
        finfo.mtime = job->t - get_time_zone(job->t);
        finfo.atime = finfo.atime; //was mtime
        finfo.ctime = finfo.ctime; //was mtime
        finfo.attr = aRONLY;
        finfo.size = job->size;

        smbwrp_dir_add("", &finfo, NULL, state);
        return;
}

static void smbwrp_share_add(const char *share, uint32 type, 
                           const char *comment, void *state)
{
        smbwrp_fileinfo finfo = {0};

        // strip administrative names and printers from list
        if (type == STYPE_PRINTQ || strcmp(share,"IPC$") == 0)
           return;

        ZERO_STRUCT(finfo);

        strncpy(finfo.fname, share, sizeof(finfo.fname) - 1);
        finfo.attr = aRONLY | aDIR;     

        smbwrp_dir_add("", &finfo, NULL, state);
        return;
}

/*
 * Do a directory listing, calling fn on each file found.
 * Modified from cli_list
 */
static int list_files(struct cli_state *cli, const char *mask, uint16 attribute,
                  void (*fn)(const char *, smbwrp_fileinfo *, const char *,
                             void *), filelist_state *state)
{
        TALLOC_CTX *frame = talloc_stackframe();
        struct event_context *ev;
        struct tevent_req *req;
        NTSTATUS status = NT_STATUS_NO_MEMORY;
        struct file_info *finfo;
        size_t i, num_finfo;
        uint16_t info_level;
        void *dircachectx = NULL;
        Resource *pRes = state->pConn->pRes;

        // Try to get the listing from cache.
        debuglocal(pRes, 9, "list_files: check cache %s\n", state->fullpath);
        if (dircache_list_files(pRes->pdc, addFindInfoCachedL, state->plist,
                                state->dir_mask, (char*) state->fullpath, &num_finfo)) {
           debuglocal(pRes, 9, "list_files: %s, got %d from cache\n",
                        state->fullpath, num_finfo);
           return(num_finfo); // Got from cache
        }

        if (cli_has_async_calls(cli)) {
        /*
         * Can't use sync call while an async call is in flight
         */
           status = NT_STATUS_INVALID_PARAMETER;
           goto fail;
        }
        ev = event_context_init(frame);
        if (ev == NULL)
           goto fail;

        info_level = (cli->capabilities & CAP_NT_SMBS)
        ? SMB_FIND_FILE_BOTH_DIRECTORY_INFO : SMB_FIND_EA_SIZE;

        debuglocal(pRes, 4,"list_files level %d. mask <%s>\n", info_level, mask);

        req = cli_list_send(frame, ev, cli, mask, attribute, info_level);
        if (req == NULL)
           goto fail;

        if (!tevent_req_poll(req, ev)) {
           status = map_nt_error_from_unix(errno);
           goto fail;
        }

        status = cli_list_recv(req, frame, &finfo, &num_finfo);
        if (!NT_STATUS_IS_OK(status))
           goto fail;

        dircachectx = dircache_write_begin(pRes->pdc, state->dir_mask,
                                           (char*) state->fullpath, num_finfo);

        debuglocal(pRes, 4,"list_files: got %d files\n", num_finfo);

        for (i=0; i<num_finfo; i++) {
           // dinamically allocate finfo data structure, cache can keep only pointers
           smbwrp_fileinfo* wrpfinfo = (smbwrp_fileinfo*)malloc( sizeof(smbwrp_fileinfo));
           //as samba and this client have different finfo, we need to convert
           memset(wrpfinfo, 0, sizeof(smbwrp_fileinfo));
           wrpfinfo->size = finfo[i].size;
           wrpfinfo->attr = finfo[i].mode;
           wrpfinfo->ctime = convert_timespec_to_time_t(finfo[i].ctime_ts);
           wrpfinfo->mtime = convert_timespec_to_time_t(finfo[i].mtime_ts);
           wrpfinfo->atime = convert_timespec_to_time_t(finfo[i].atime_ts);
           wrpfinfo->easize = finfo[i].easize;
           strncpy(wrpfinfo->fname, finfo[i].name, sizeof(wrpfinfo->fname) -1);
           // add to netdrive plist
           debuglocal(pRes, 9,"list_files: dircachectx %x, %s->%p\n",
                      dircachectx, wrpfinfo->fname, wrpfinfo);
           addFindInfoCachedL(state->plist, wrpfinfo);
           // Also add the entry to the cache, this pointer will be released
           // when cache will be deleted
           dircache_write_entry(pRes->pdc, dircachectx, wrpfinfo->fname, wrpfinfo);
        }

        dircache_write_end(pRes->pdc, dircachectx);

 fail:
        TALLOC_FREE(frame);
        return num_finfo;
}

/*
 * open a directory on the server
 */
int _System smbwrp_filelist(Resource *pRes, smbwrp_server *srv, cli_state * cli, filelist_state * state)
{
        if (!srv || !cli || !state || !*state->mask)
           return maperror(EINVAL);

        debuglocal(pRes, 1,"Filelist <%s> on master <%s> wgrp <%s> server <%s> share <%s> clidev <%s>\n", state->mask, srv->master, srv->workgroup, srv->server_name, srv->share_name, cli->dev);
        if (*srv->workgroup == 0 && *srv->server_name == 0) 
        {
           smbwrp_special_add(".", state);
           smbwrp_special_add("..", state);
           cli_NetServerEnum(cli, srv->master, SV_TYPE_DOMAIN_ENUM,
           smbwrp_share_add, state);
        } else if (*srv->server_name == 0) 
        {
           smbwrp_special_add(".", state);
           smbwrp_special_add("..", state);
           cli_NetServerEnum(cli, srv->workgroup, SV_TYPE_ALL,
           smbwrp_share_add, state);
        } else if ((strcmp(cli->dev,"IPC") == 0) || *srv->share_name == 0 ||
                   (stricmp(srv->share_name,"IPC$") == 0)) 
        {
           smbwrp_special_add(".", state);
           smbwrp_special_add("..", state);
           if (net_share_enum_rpc(cli, smbwrp_share_add, state) < 0 &&
               cli_RNetShareEnum(cli,smbwrp_share_add, state) < 0) 
              return os2cli_errno(cli);
        } else if (strncmp(cli->dev,"LPT",3) == 0) 
        {
           smbwrp_special_add(".", state);
           smbwrp_special_add("..", state);
           if (cli_print_queue_state(cli, smbwrp_printjob_add, state) < 0) 
              return os2cli_errno(cli);
        } 
        else 
        {
           if (list_files(cli, state->mask, aHIDDEN|aSYSTEM|aDIR, 
               smbwrp_dir_add, state) < 0)                                                            
              return os2cli_errno(cli);
        }                                                                                                                                               

        return 0;
}

/*
 * a wrapper for chdir()
 */
int _System smbwrp_chdir(Resource *pRes, smbwrp_server *srv, cli_state * cli, char *fname)
{
        unsigned short mode = aDIR;
        smbwrp_fileinfo finfo = {0};
        if (!cli || !fname) 
           return maperror(EINVAL);

        strncpy(finfo.fname, fname, sizeof(finfo.fname) - 1);
        if (smbwrp_getattr(pRes, srv, cli, &finfo)) 
           return os2cli_errno(cli);


        if (!(finfo.attr & aDIR))
           return maperror(ENOTDIR);


        return 0;
}


/*
 * a wrapper for mkdir()
 */
int _System smbwrp_mkdir(Resource *pRes, cli_state * cli, char *fname)
{
        if (!cli || !fname) 
           return maperror(EINVAL);

        if (!NT_STATUS_IS_OK(cli_mkdir(cli, fname)))
           return os2cli_errno(cli);
        
        return 0;
}

/*
 * a wrapper for rmdir()
 */
int _System smbwrp_rmdir(Resource *pRes, cli_state * cli, char *fname)
{
        if (!cli || !fname) 
           return maperror(EINVAL);

        if (!NT_STATUS_IS_OK(cli_rmdir(cli, fname)))
           return os2cli_errno(cli);

        return 0;
}

/*
 * set EA for a path
 */
int _System smbwrp_setea(Resource *pRes, cli_state * cli, char *fname, char * name, unsigned char * value, int size)
{
        if (!cli || !fname || !name) 
           return maperror(EINVAL);

        if (!NT_STATUS_IS_OK(cli_set_ea_path(cli, fname, name, value, size)))
           return os2cli_errno(cli);

        return 0;
}

/*
 * set EA for a file
 */
int _System smbwrp_fsetea(Resource *pRes, cli_state * cli, smbwrp_file *file, char * name, unsigned char * value, int size)
{
        if (!cli || !file || !name) 
           return maperror(EINVAL);

        if (!NT_STATUS_IS_OK(cli_set_ea_fnum(cli, file->fd, name, value, size)))
           return os2cli_errno(cli);

        return 0;
}


static int unilistea(Resource *pRes, cli_state * cli, char *fname, void * buffer, unsigned long size)
{
        int fnum, i;
        int gotsize = sizeof(unsigned long);
        size_t num_eas;
        struct ea_struct *ea_list = NULL;
        TALLOC_CTX *mem_ctx;
        FEA * p;
        FEALIST * pfealist;
        char * q;

        mem_ctx = talloc_init("%d: ealist", _gettid());
        pfealist = (FEALIST *)buffer;
        pfealist->cbList = 0;

        if (!NT_STATUS_IS_OK(cli_get_ea_list_path(cli, fname, mem_ctx, &num_eas, &ea_list)))
        {
           debuglocal(pRes, 4,"ea_get_file list failed - %s\n", cli_errstr(cli));
           talloc_destroy(mem_ctx);
           return os2cli_errno(cli);
        }

        debuglocal(pRes, 4,"num_eas = %d\n", num_eas);

        // we will count that os/2 max EA size for file is 64kb
        p = pfealist->list;
        for (i = 0; i < num_eas; i++) 
        {
           int namelen = strlen(ea_list[i].name);
           debuglocal(pRes, 4, "%d Got EA <%s> with namelen %d, size %d. Gross %d. Buf %d\n", i, ea_list[i].name, namelen, ea_list[i].value.length, gotsize, size);
           if (namelen > 0xFF || ea_list[i].value.length > 0xFFFF)
           {
              debuglocal(pRes, 4, "Skip EA <%s> with namelen %d, size %d\n", ea_list[i].name, namelen, ea_list[i].value.length);
              continue;
           }
           gotsize += sizeof(FEA) + namelen + ea_list[i].value.length + 1;
           if (size >= gotsize)
           {
              p->fEA = 0;
              p->cbName = namelen;
              p->cbValue = ea_list[i].value.length;
              q = (char *)(p + 1);
              strncpy(q, ea_list[i].name, namelen + 1);
              q += namelen + 1;
              memcpy(q, ea_list[i].value.data, ea_list[i].value.length);
              p = (FEA *)(q + ea_list[i].value.length);
           }
        }
        pfealist->cbList = gotsize;
        debuglocal(pRes, 4,"ret size = %d\n", gotsize);

        talloc_destroy(mem_ctx);
        return 0;
}

/*
 * lists EA of a path
 */
int _System smbwrp_listea(Resource *pRes, cli_state * cli, char *fname, void * buffer, unsigned long size)
{
        if (!cli || !fname || !buffer)
           return maperror(EINVAL);

        debuglocal(pRes, 4,"EALIst for <%s>\n", fname);
        return unilistea(pRes, cli, fname, buffer, size);
}

/*
 * lists EA of a file
 */
int _System smbwrp_flistea(Resource *pRes, cli_state * cli, smbwrp_file *file, void * buffer, unsigned long size)
{
        if (!cli || !file || !buffer)
           return maperror(EINVAL);

        debuglocal(pRes, 4,"FEALIst for <%s>\n", file->fname);
        return unilistea(pRes, cli, file->fname, buffer, size);
}

/*
 * Check the space on a device.
 */
int _System smbwrp_dskattr(Resource *pRes, cli_state * cli, FSALLOCATE *pfsa)
{
        int total, bsize, avail;

        if (!cli || !pfsa)
           return maperror(EINVAL);

        if (!NT_STATUS_IS_OK(cli_dskattr(cli, &bsize, &total, &avail))) 
        {
           debuglocal(pRes, 4,"Error in dskattr: %s\n",cli_errstr(cli));
           return os2cli_errno(cli);
        }

        debuglocal(pRes, 4,"\n\t\t%d blocks of size %d. %d blocks available\n",
                   total, bsize, avail);

        // YD currently Samba return it in MB!
        pfsa->cSectorUnit = 1;
        if (bsize >= 65536) 
        {
           pfsa->cUnit = total*1024;
           pfsa->cUnitAvail = avail*1024;
           pfsa->cbSector = bsize/1024;
        } 
        else 
        {
           pfsa->cUnit = total;
           pfsa->cUnitAvail = avail;
           pfsa->cbSector = bsize;
        }

        return 0;
}