source: vendor/3.6.0/source4/libcli/cliconnect.c

/*
   Unix SMB/CIFS implementation.

   client connect/disconnect routines

   Copyright (C) Andrew Tridgell 2003-2005
   Copyright (C) James Peach 2005

   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 3 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, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "libcli/libcli.h"
#include "libcli/raw/libcliraw.h"
#include "libcli/raw/raw_proto.h"
#include "libcli/auth/libcli_auth.h"
#include "libcli/smb_composite/smb_composite.h"

/*
  wrapper around smbcli_sock_connect()
*/
bool smbcli_socket_connect(struct smbcli_state *cli, const char *server, 
                           const char **ports, 
                           struct tevent_context *ev_ctx,
                           struct resolve_context *resolve_ctx,
                           struct smbcli_options *options,
               const char *socket_options)
{
        struct smbcli_socket *sock;

        sock = smbcli_sock_connect_byname(server, ports, NULL,
                                          resolve_ctx, ev_ctx,
                      socket_options);

        if (sock == NULL) return false;
        
        cli->transport = smbcli_transport_init(sock, cli, true, options);
        if (!cli->transport) {
                return false;
        }

        return true;
}

/* wrapper around smbcli_transport_connect() */
bool smbcli_transport_establish(struct smbcli_state *cli, 
                                struct nbt_name *calling,
                                struct nbt_name *called)
{
        return smbcli_transport_connect(cli->transport, calling, called);
}

/* wrapper around smb_raw_negotiate() */
NTSTATUS smbcli_negprot(struct smbcli_state *cli, bool unicode, int maxprotocol)
{
        return smb_raw_negotiate(cli->transport, unicode, maxprotocol);
}

/* wrapper around smb_raw_sesssetup() */
NTSTATUS smbcli_session_setup(struct smbcli_state *cli, 
                              struct cli_credentials *credentials,
                              const char *workgroup,
                              struct smbcli_session_options options,
                              struct gensec_settings *gensec_settings)
{
        struct smb_composite_sesssetup setup;
        NTSTATUS status;

        cli->session = smbcli_session_init(cli->transport, cli, true,
                                           options);
        if (!cli->session) return NT_STATUS_UNSUCCESSFUL;

        setup.in.sesskey = cli->transport->negotiate.sesskey;
        setup.in.capabilities = cli->transport->negotiate.capabilities;
        setup.in.credentials = credentials;
        setup.in.workgroup = workgroup;
        setup.in.gensec_settings = gensec_settings;

        status = smb_composite_sesssetup(cli->session, &setup);

        cli->session->vuid = setup.out.vuid;

        return status;
}

/* wrapper around smb_raw_tcon() */
NTSTATUS smbcli_tconX(struct smbcli_state *cli, const char *sharename, 
                      const char *devtype, const char *password)
{
        union smb_tcon tcon;
        TALLOC_CTX *mem_ctx;
        NTSTATUS status;

        cli->tree = smbcli_tree_init(cli->session, cli, true);
        if (!cli->tree) return NT_STATUS_UNSUCCESSFUL;

        mem_ctx = talloc_init("tcon");
        if (!mem_ctx) {
                return NT_STATUS_NO_MEMORY;
        }

        /* setup a tree connect */
        tcon.generic.level = RAW_TCON_TCONX;
        tcon.tconx.in.flags = 0;
        if (cli->transport->negotiate.sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) {
                tcon.tconx.in.password = data_blob(NULL, 0);
        } else if (cli->transport->negotiate.sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) {
                tcon.tconx.in.password = data_blob_talloc(mem_ctx, NULL, 24);
                if (cli->transport->negotiate.secblob.length < 8) {
                        return NT_STATUS_INVALID_PARAMETER;
                }
                SMBencrypt(password, cli->transport->negotiate.secblob.data, tcon.tconx.in.password.data);
        } else {
                tcon.tconx.in.password = data_blob_talloc(mem_ctx, password, strlen(password)+1);
        }
        tcon.tconx.in.path = sharename;
        tcon.tconx.in.device = devtype;
        
        status = smb_raw_tcon(cli->tree, mem_ctx, &tcon);

        cli->tree->tid = tcon.tconx.out.tid;

        talloc_free(mem_ctx);

        return status;
}


/*
  easy way to get to a fully connected smbcli_state in one call
*/
NTSTATUS smbcli_full_connection(TALLOC_CTX *parent_ctx,
                                struct smbcli_state **ret_cli, 
                                const char *host,
                                const char **ports,
                                const char *sharename,
                                const char *devtype,
                                const char *socket_options,
                                struct cli_credentials *credentials,
                                struct resolve_context *resolve_ctx,
                                struct tevent_context *ev,
                                struct smbcli_options *options,
                                struct smbcli_session_options *session_options,
                                struct gensec_settings *gensec_settings)
{
        struct smbcli_tree *tree;
        NTSTATUS status;

        *ret_cli = NULL;

        status = smbcli_tree_full_connection(parent_ctx,
                                             &tree, host, ports, 
                                             sharename, devtype,
                                                 socket_options,
                                             credentials, resolve_ctx, ev,
                                             options,
                                             session_options,
                                                 gensec_settings);
        if (!NT_STATUS_IS_OK(status)) {
                goto done;
        }

        (*ret_cli) = smbcli_state_init(parent_ctx);

        (*ret_cli)->tree = tree;
        (*ret_cli)->session = tree->session;
        (*ret_cli)->transport = tree->session->transport;

        talloc_steal(*ret_cli, tree);
        
done:
        return status;
}


/*
  disconnect the tree
*/
NTSTATUS smbcli_tdis(struct smbcli_state *cli)
{
        return smb_tree_disconnect(cli->tree);
}

/****************************************************************************
 Initialise a client state structure.
****************************************************************************/
struct smbcli_state *smbcli_state_init(TALLOC_CTX *mem_ctx)
{
        return talloc_zero(mem_ctx, struct smbcli_state);
}

/* Insert a NULL at the first separator of the given path and return a pointer
 * to the remainder of the string.
 */
static char *
terminate_path_at_separator(char * path)
{
        char * p;

        if (!path) {
                return NULL;
        }

        if ((p = strchr_m(path, '/'))) {
                *p = '\0';
                return p + 1;
        }

        if ((p = strchr_m(path, '\\'))) {
                *p = '\0';
                return p + 1;
        }
        
        /* No separator. */
        return NULL;
}

/*
  parse a //server/share type UNC name
*/
bool smbcli_parse_unc(const char *unc_name, TALLOC_CTX *mem_ctx,
                      char **hostname, char **sharename)
{
        char *p;

        if (strncmp(unc_name, "\\\\", 2) &&
            strncmp(unc_name, "//", 2)) {
                return false;
        }

        *hostname = *sharename = NULL;

        *hostname = talloc_strdup(mem_ctx, &unc_name[2]);
        p = terminate_path_at_separator(*hostname);

        if (p != NULL && *p) {
                *sharename = talloc_strdup(mem_ctx, p);
                terminate_path_at_separator(*sharename);
        }

        if (*hostname && *sharename) {
                return true;
        }

        talloc_free(*hostname);
        talloc_free(*sharename);
        *hostname = *sharename = NULL;
        return false;
}