smb.c 14.2 KB
Newer Older
1 2 3
/*****************************************************************************
 * smb.c: SMB input module
 *****************************************************************************
4
 * Copyright (C) 2001-2004 the VideoLAN team
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
 * $Id$
 *
 * Authors: Gildas Bazin <gbazin@videolan.org>
 *
 * 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
Antoine Cellerier's avatar
Antoine Cellerier committed
21
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 23 24 25 26
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
27

28

29 30 31 32
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

33
#include <vlc_common.h>
34
#include <vlc_plugin.h>
Clément Stenac's avatar
Clément Stenac committed
35
#include <vlc_access.h>
36

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
#ifdef WIN32
#ifdef HAVE_FCNTL_H
#   include <fcntl.h>
#endif
#   ifdef HAVE_SYS_STAT_H
#       include <sys/stat.h>
#   endif
#   include <io.h>
#   define smbc_open(a,b,c) open(a,b,c)
#   define stat _stati64
#   define smbc_fstat(a,b) _fstati64(a,b)
#   define smbc_read read
#   define smbc_lseek _lseeki64
#   define smbc_close close
#else
#   include <libsmbclient.h>
#   define USE_CTX 1
#endif
55

56 57
#include <errno.h>

58 59 60 61 62 63 64 65
/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
static int  Open ( vlc_object_t * );
static void Close( vlc_object_t * );

#define CACHING_TEXT N_("Caching value in ms")
#define CACHING_LONGTEXT N_( \
66
    "Caching value for SMB streams. This " \
Clément Stenac's avatar
Clément Stenac committed
67
    "value should be set in milliseconds." )
68
#define USER_TEXT N_("SMB user name")
Clément Stenac's avatar
Clément Stenac committed
69
#define USER_LONGTEXT N_("User name that will " \
70 71
    "be used for the connection.")
#define PASS_TEXT N_("SMB password")
Clément Stenac's avatar
Clément Stenac committed
72
#define PASS_LONGTEXT N_("Password that will be " \
73 74
    "used for the connection.")
#define DOMAIN_TEXT N_("SMB domain")
Clément Stenac's avatar
Clément Stenac committed
75
#define DOMAIN_LONGTEXT N_("Domain/Workgroup that " \
76 77 78 79
    "will be used for the connection.")

vlc_module_begin();
    set_shortname( "SMB" );
80
    set_description( N_("SMB input") );
81
    set_capability( "access", 0 );
82 83 84
    set_category( CAT_INPUT );
    set_subcategory( SUBCAT_INPUT_ACCESS );
    add_integer( "smb-caching", 2 * DEFAULT_PTS_DELAY / 1000, NULL,
85
                 CACHING_TEXT, CACHING_LONGTEXT, true );
86
    add_string( "smb-user", NULL, NULL, USER_TEXT, USER_LONGTEXT,
87
                false );
88
    add_string( "smb-pwd", NULL, NULL, PASS_TEXT,
89
                PASS_LONGTEXT, false );
90
    add_string( "smb-domain", NULL, NULL, DOMAIN_TEXT,
91
                DOMAIN_LONGTEXT, false );
92 93 94 95 96 97 98
    add_shortcut( "smb" );
    set_callbacks( Open, Close );
vlc_module_end();

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
99
static ssize_t Read( access_t *, uint8_t *, size_t );
100 101 102 103 104 105 106 107 108 109 110 111 112
static int Seek( access_t *, int64_t );
static int Control( access_t *, int, va_list );

struct access_sys_t
{
#ifdef USE_CTX
    SMBCCTX *p_smb;
    SMBCFILE *p_file;
#else
    int i_smb;
#endif
};

113 114 115 116
#ifdef WIN32
static void Win32AddConnection( access_t *, char *, char *, char *, char * );
#endif

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
117 118
static void smb_auth( const char *srv, const char *shr, char *wg, int wglen,
                      char *un, int unlen, char *pw, int pwlen )
119 120 121 122 123 124 125 126 127 128 129 130
{
    //wglen = unlen = pwlen = 0;
}

/****************************************************************************
 * Open: connect to smb server and ask for file
 ****************************************************************************/
static int Open( vlc_object_t *p_this )
{
    access_t     *p_access = (access_t*)p_this;
    access_sys_t *p_sys;
    struct stat  filestat;
131 132
    char         *psz_path, *psz_uri;
    char         *psz_user = 0, *psz_pwd = 0, *psz_domain = 0;
133 134 135 136 137 138 139 140 141
    int          i_ret;

#ifdef USE_CTX
    SMBCCTX      *p_smb;
    SMBCFILE     *p_file;
#else
    int          i_smb;
#endif

142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187
    /* Parse input URI
     * [[[domain;]user[:password@]]server[/share[/path[/file]]]] */

    psz_path = strchr( p_access->psz_path, '/' );
    if( !psz_path )
    {
        msg_Err( p_access, "invalid SMB URI: smb://%s", psz_path );
        return VLC_EGENERIC;
    }
    else
    {
        char *psz_tmp = strdup( p_access->psz_path );
        char *psz_parser;

        psz_tmp[ psz_path - p_access->psz_path ] = 0;
        psz_path = p_access->psz_path;
        psz_parser = strchr( psz_tmp, '@' );
        if( psz_parser )
        {
            /* User info is there */
            *psz_parser = 0;
            psz_path = p_access->psz_path + (psz_parser - psz_tmp) + 1;

            psz_parser = strchr( psz_tmp, ':' );
            if( psz_parser )
            {
                /* Password found */
                psz_pwd = strdup( psz_parser+1 );
                *psz_parser = 0;
            }

            psz_parser = strchr( psz_tmp, ';' );
            if( psz_parser )
            {
                /* Domain found */
                *psz_parser = 0; psz_parser++;
                psz_domain = strdup( psz_tmp );
            }
            else psz_parser = psz_tmp;

            psz_user = strdup( psz_parser );
        }

        free( psz_tmp );
    }

188 189 190
    /* Build an SMB URI
     * smb://[[[domain;]user[:password@]]server[/share[/path[/file]]]] */

191
    if( !psz_user ) psz_user = var_CreateGetString( p_access, "smb-user" );
192
    if( psz_user && !*psz_user ) { free( psz_user ); psz_user = 0; }
193
    if( !psz_pwd ) psz_pwd = var_CreateGetString( p_access, "smb-pwd" );
194
    if( psz_pwd && !*psz_pwd ) { free( psz_pwd ); psz_pwd = 0; }
195
    if( !psz_domain ) psz_domain = var_CreateGetString( p_access, "smb-domain" );
196
    if( psz_domain && !*psz_domain ) { free( psz_domain ); psz_domain = 0; }
197

198 199 200 201 202
#ifdef WIN32
    if( psz_user )
        Win32AddConnection( p_access, psz_path, psz_user, psz_pwd, psz_domain);
    asprintf( &psz_uri, "//%s", psz_path );
#else
203 204 205 206
    if( psz_user )
        asprintf( &psz_uri, "smb://%s%s%s%s%s@%s",
                  psz_domain ? psz_domain : "", psz_domain ? ";" : "",
                  psz_user, psz_pwd ? ":" : "",
207
                  psz_pwd ? psz_pwd : "", psz_path );
208
    else
209 210
        asprintf( &psz_uri, "smb://%s", psz_path );
#endif
211

212 213 214
    free( psz_user );
    free( psz_pwd );
    free( psz_domain );
215 216 217 218 219 220 221 222 223 224 225 226 227

#ifdef USE_CTX
    if( !(p_smb = smbc_new_context()) )
    {
        msg_Err( p_access, "out of memory" );
        free( psz_uri );
        return VLC_ENOMEM;
    }
    p_smb->debug = 1;
    p_smb->callbacks.auth_fn = smb_auth;

    if( !smbc_init_context( p_smb ) )
    {
228
        msg_Err( p_access, "cannot initialize context (%m)" );
229 230 231 232 233
        smbc_free_context( p_smb, 1 );
        free( psz_uri );
        return VLC_EGENERIC;
    }

234
    if( !(p_file = (p_smb->open)( p_smb, psz_uri, O_RDONLY, 0 )) )
235
    {
236 237
        msg_Err( p_access, "open failed for '%s' (%m)",
                 p_access->psz_path );
238 239 240 241 242
        smbc_free_context( p_smb, 1 );
        free( psz_uri );
        return VLC_EGENERIC;
    }

243 244 245
    /* Init p_access */
    STANDARD_READ_ACCESS_INIT;

246
    i_ret = p_smb->fstat( p_smb, p_file, &filestat );
247
    if( i_ret ) msg_Err( p_access, "stat failed (%m)" );
248 249
    else p_access->info.i_size = filestat.st_size;
#else
250 251

#ifndef WIN32
252 253 254 255 256
    if( smbc_init( smb_auth, 1 ) )
    {
        free( psz_uri );
        return VLC_EGENERIC;
    }
257
#endif
258

259 260 261 262 263 264 265 266
/*
** some version of glibc defines open as a macro, causing havoc
** with other macros using 'open' under the hood, such as the
** following one:
*/
#if defined(smbc_open) && defined(open)
# undef open
#endif
267
    if( (i_smb = smbc_open( psz_uri, O_RDONLY, 0 )) < 0 )
268
    {
269 270
        msg_Err( p_access, "open failed for '%s' (%m)",
                 p_access->psz_path );
271 272 273 274
        free( psz_uri );
        return VLC_EGENERIC;
    }

275 276 277
    /* Init p_access */
    STANDARD_READ_ACCESS_INIT;

278
    i_ret = smbc_fstat( i_smb, &filestat );
279 280 281 282 283
    if( i_ret )
    {
        errno = i_ret;
        msg_Err( p_access, "stat failed (%m)" );
    }
284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310
    else p_access->info.i_size = filestat.st_size;
#endif

    free( psz_uri );

#ifdef USE_CTX
    p_sys->p_smb = p_smb;
    p_sys->p_file = p_file;
#else
    p_sys->i_smb = i_smb;
#endif

    /* Update default_pts to a suitable value for smb access */
    var_Create( p_access, "smb-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );

    return VLC_SUCCESS;
}

/*****************************************************************************
 * Close: free unused data structures
 *****************************************************************************/
static void Close( vlc_object_t *p_this )
{
    access_t     *p_access = (access_t*)p_this;
    access_sys_t *p_sys = p_access->p_sys;

#ifdef USE_CTX
311
#  ifndef HAVE__SMBCCTX_CLOSE_FN
312
    p_sys->p_smb->close( p_sys->p_smb, p_sys->p_file );
313 314 315
#  else
    p_sys->p_smb->close_fn( p_sys->p_smb, p_sys->p_file );
#  endif
316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333
    smbc_free_context( p_sys->p_smb, 1 );
#else
    smbc_close( p_sys->i_smb );
#endif

    free( p_sys );
}

/*****************************************************************************
 * Seek: try to go at the right place
 *****************************************************************************/
static int Seek( access_t *p_access, int64_t i_pos )
{
    access_sys_t *p_sys = p_access->p_sys;
    int64_t      i_ret;

    if( i_pos < 0 ) return VLC_EGENERIC;

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
334
    msg_Dbg( p_access, "seeking to %"PRId64, i_pos );
335 336 337 338 339 340 341 342

#ifdef USE_CTX
    i_ret = p_sys->p_smb->lseek(p_sys->p_smb, p_sys->p_file, i_pos, SEEK_SET);
#else
    i_ret = smbc_lseek( p_sys->i_smb, i_pos, SEEK_SET );
#endif
    if( i_ret == -1 )
    {
343
        msg_Err( p_access, "seek failed (%m)" );
344 345 346
        return VLC_EGENERIC;
    }

347
    p_access->info.b_eof = false;
348 349 350 351 352 353 354 355
    p_access->info.i_pos = i_ret;

    return VLC_SUCCESS;
}

/*****************************************************************************
 * Read:
 *****************************************************************************/
356
static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len )
357 358 359 360 361 362 363 364 365 366 367 368 369
{
    access_sys_t *p_sys = p_access->p_sys;
    int i_read;

    if( p_access->info.b_eof ) return 0;

#ifdef USE_CTX
    i_read = p_sys->p_smb->read(p_sys->p_smb, p_sys->p_file, p_buffer, i_len);
#else
    i_read = smbc_read( p_sys->i_smb, p_buffer, i_len );
#endif
    if( i_read < 0 )
    {
370
        msg_Err( p_access, "read failed (%m)" );
371 372 373
        return -1;
    }

374
    if( i_read == 0 ) p_access->info.b_eof = true;
375 376 377 378 379 380 381 382 383 384
    else if( i_read > 0 ) p_access->info.i_pos += i_read;

    return i_read;
}

/*****************************************************************************
 * Control:
 *****************************************************************************/
static int Control( access_t *p_access, int i_query, va_list args )
{
385
    bool   *pb_bool;
386 387 388 389 390 391
    int          *pi_int;
    int64_t      *pi_64;

    switch( i_query )
    {
    case ACCESS_CAN_SEEK:
392 393
        pb_bool = (bool*)va_arg( args, bool* );
        *pb_bool = true;
394 395
        break;
    case ACCESS_CAN_FASTSEEK:
396 397
        pb_bool = (bool*)va_arg( args, bool* );
        *pb_bool = true;
398 399
        break;
    case ACCESS_CAN_PAUSE:
400 401
        pb_bool = (bool*)va_arg( args, bool* );
        *pb_bool = true;
402 403
        break;
    case ACCESS_CAN_CONTROL_PACE:
404 405
        pb_bool = (bool*)va_arg( args, bool* );
        *pb_bool = true;
406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425
        break;

    case ACCESS_GET_MTU:
        pi_int = (int*)va_arg( args, int * );
        *pi_int = 0;
        break;

    case ACCESS_GET_PTS_DELAY:
        pi_64 = (int64_t*)va_arg( args, int64_t * );
        *pi_64 = (int64_t)var_GetInteger( p_access, "smb-caching" ) * 1000;
        break;

    case ACCESS_SET_PAUSE_STATE:
        /* Nothing to do */
        break;

    case ACCESS_GET_TITLE_INFO:
    case ACCESS_SET_TITLE:
    case ACCESS_SET_SEEKPOINT:
    case ACCESS_SET_PRIVATE_ID_STATE:
426
    case ACCESS_GET_CONTENT_TYPE:
427 428 429 430 431 432 433 434 435 436
        return VLC_EGENERIC;

    default:
        msg_Warn( p_access, "unimplemented query in control" );
        return VLC_EGENERIC;

    }

    return VLC_SUCCESS;
}
437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467

#ifdef WIN32
static void Win32AddConnection( access_t *p_access, char *psz_path,
                                char *psz_user, char *psz_pwd,
                                char *psz_domain )
{
    DWORD (*OurWNetAddConnection2)( LPNETRESOURCE, LPCTSTR, LPCTSTR, DWORD );
    char psz_remote[MAX_PATH], psz_server[MAX_PATH], psz_share[MAX_PATH];
    NETRESOURCE net_resource;
    DWORD i_result;
    char *psz_parser;

    HINSTANCE hdll = LoadLibrary(_T("MPR.DLL"));
    if( !hdll )
    {
        msg_Warn( p_access, "couldn't load mpr.dll" );
        return;
    }

    OurWNetAddConnection2 =
      (void *)GetProcAddress( hdll, _T("WNetAddConnection2A") );
    if( !OurWNetAddConnection2 )
    {
        msg_Warn( p_access, "couldn't find WNetAddConnection2 in mpr.dll" );
        return;
    }

    memset( &net_resource, 0, sizeof(net_resource) );
    net_resource.dwType = RESOURCETYPE_DISK;

    /* Find out server and share names */
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
468
    strlcpy( psz_server, psz_path, sizeof( psz_server ) );
469
    psz_share[0] = 0;
470 471 472
    psz_parser = strchr( psz_path, '/' );
    if( psz_parser )
    {
473
        char *psz_parser2 = strchr( ++psz_parser, '/' );
474
        if( psz_parser2 )
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
475
            strlcpy( psz_share, psz_parser, sizeof( psz_share ) );
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
476
   }
477 478 479 480 481 482 483 484 485 486

    sprintf( psz_remote, "\\\\%s\\%s", psz_server, psz_share );
    net_resource.lpRemoteName = psz_remote;

    i_result = OurWNetAddConnection2( &net_resource, psz_pwd, psz_user, 0 );

    if( i_result != NO_ERROR )
    {
        msg_Dbg( p_access, "connected to %s", psz_remote );
    }
487
    else if( i_result != ERROR_ALREADY_ASSIGNED &&
488 489 490 491 492 493 494 495 496 497 498 499
             i_result != ERROR_DEVICE_ALREADY_REMEMBERED )
    {
        msg_Dbg( p_access, "already connected to %s", psz_remote );
    }
    else
    {
        msg_Dbg( p_access, "failed to connect to %s", psz_remote );
    }

    FreeLibrary( hdll );
}
#endif // WIN32