ftp.c 24.1 KB
Newer Older
1
2
3
/*****************************************************************************
 * ftp.c:
 *****************************************************************************
4
5
 * Copyright (C) 2001-2003 VideoLAN
 * $Id: ftp.c,v 1.18 2003/05/08 19:51:38 fenrir Exp $
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
 *
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <stdlib.h>
#include <sys/types.h>
29
#include <sys/time.h>
30
31
32
33
34
35
36
37
#include <sys/stat.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>

#include <vlc/vlc.h>
#include <vlc/input.h>

38
39
40
41
#ifdef HAVE_SYS_TIME_H
#    include <sys/time.h>
#endif

42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
#ifdef HAVE_UNISTD_H
#   include <unistd.h>
#endif

#ifdef WIN32
#   include <winsock2.h>
#   include <ws2tcpip.h>
#   ifndef IN_MULTICAST
#       define IN_MULTICAST(a) IN_CLASSD(a)
#   endif
#else
#   include <sys/socket.h>
#   include <netinet/in.h>
#   if HAVE_ARPA_INET_H
#      include <arpa/inet.h>
#   elif defined( SYS_BEOS )
#      include <net/netdb.h>
#   endif
#endif

#include "network.h"

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
67
68
static int     Open     ( vlc_object_t * );
static void    Close    ( vlc_object_t * );
69

70
static ssize_t Read     ( input_thread_t * p_input, byte_t * p_buffer,
71
                          size_t i_len );
72
static void    Seek     ( input_thread_t *, off_t );
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91


static ssize_t NetRead ( input_thread_t *, input_socket_t *, byte_t *, size_t );
static void    NetClose( input_thread_t *, input_socket_t *);

static int  ftp_SendCommand( input_thread_t *, char *, ... );
static int  ftp_ReadCommand( input_thread_t *, int *, char ** );
static int  ftp_StartStream( input_thread_t *, off_t );
static int  ftp_StopStream ( input_thread_t *);

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
#define CACHING_TEXT N_("caching value in ms")
#define CACHING_LONGTEXT N_( \
    "Allows you to modify the default caching value for ftp streams. This " \
    "value should be set in miliseconds units." )

vlc_module_begin();
gbazin's avatar
   
gbazin committed
92
    set_description( _("FTP input") );
93
    set_capability( "access", 0 );
94
    add_category_hint( "stream", NULL, VLC_FALSE );
95
        add_integer( "ftp-caching", 2 * DEFAULT_PTS_DELAY / 1000, NULL,
96
97
98
99
                     CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
        add_string( "ftp-user", "anonymous", NULL, "ftp user name", "ftp user name", VLC_FALSE );
        add_string( "ftp-pwd", "anonymous@dummy.org", NULL, "ftp password", "ftp password, be careful with that option...", VLC_FALSE );
        add_string( "ftp-account", "anonymous", NULL, "ftp account", "ftp account", VLC_FALSE );
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
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
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
    add_shortcut( "ftp" );
    set_callbacks( Open, Close );
vlc_module_end();

/* url: [/]host[:port][/path] */
typedef struct url_s
{
    char    *psz_server_addr;
    int     i_server_port;

    char    *psz_bind_addr;
    int     i_bind_port;

    char    *psz_path;

    /* private */
    char *psz_private;
} url_t;

static void ftp_ParseURL( url_t *, char * );

#define FREE( p ) if( p ) free( p )

typedef struct access_s
{
    input_socket_t  socket_cmd;
    input_socket_t  socket_data;

    url_t           url;                        /* connect to this server */

    off_t           i_filesize;

    int             i_eos;

} access_t;


/****************************************************************************
 ****************************************************************************
 *******************                                      *******************
 *******************       Main functions                 *******************
 *******************                                      *******************
 ****************************************************************************
 ****************************************************************************/

/****************************************************************************
 * Open: connect to ftp server and ask for file
 ****************************************************************************/
static int Open( vlc_object_t *p_this )
{
    input_thread_t  *p_input = (input_thread_t*)p_this;

    access_t    *p_access;
    char        *psz_network;

    module_t            *p_network;
    network_socket_t    socket_desc;
    url_t               *p_url;

    int                 i_answer;
    char                *psz_user, *psz_pwd, *psz_account;

    char                *psz_arg;

    /* *** allocate p_access_data *** */
    p_input->p_access_data =
        (void*)p_access = malloc( sizeof( access_t ) );
    memset( p_access, 0, sizeof( access_t ) );
    p_url = &p_access->url;

    /* *** Parse URL and get server addr/port and path *** */
    ftp_ParseURL( p_url, p_input->psz_name );

    if( p_url->psz_server_addr == NULL ||
        !( *p_url->psz_server_addr ) )
    {
        FREE( p_url->psz_private );
        msg_Err( p_input, "invalid server name" );
        return( -1 );
    }
    if( p_url->i_server_port == 0 )
    {
        p_url->i_server_port = 21; /* default port */
    }

    /* 2: look at ip version ipv4/ipv6 */
    psz_network = "";
    if( config_GetInt( p_input, "ipv4" ) )
    {
        psz_network = "ipv4";
    }
    else if( config_GetInt( p_input, "ipv6" ) )
    {
        psz_network = "ipv6";
    }

    /* 3: Open a TCP connection with server *** */
    msg_Dbg( p_input, "waiting for connection..." );
    socket_desc.i_type = NETWORK_TCP;
    socket_desc.psz_server_addr = p_url->psz_server_addr;
    socket_desc.i_server_port   = p_url->i_server_port;
    socket_desc.psz_bind_addr   = "";
    socket_desc.i_bind_port     = 0;
    p_input->p_private = (void*)&socket_desc;
    if( !( p_network = module_Need( p_input, "network", psz_network ) ) )
    {
        msg_Err( p_input, "failed to connect with server" );
        FREE( p_access->url.psz_private );
        FREE( p_input->p_access_data );
        return( -1 );
    }
    module_Unneed( p_input, p_network );
    p_access->socket_cmd.i_handle = socket_desc.i_handle;
    p_input->i_mtu    = socket_desc.i_mtu;
    msg_Dbg( p_input,
             "connection with \"%s:%d\" successful",
             p_url->psz_server_addr,
             p_url->i_server_port );


    for( ;; )
    {
        if( ftp_ReadCommand( p_input, &i_answer, NULL ) < 0)
        {
            msg_Err( p_input, "failed to get answer" );
            goto exit_error;
        }
        if( i_answer / 100 != 1 )
        {
            break;
        }
    }

    if( i_answer / 100 != 2 )
    {
        msg_Err( p_input, "connection rejected" );
        goto exit_error;
    }
    else
    {
        msg_Dbg( p_input, "connection accepted (%d)", i_answer );
    }

    psz_user = config_GetPsz( p_input, "ftp-user" );
    if( ftp_SendCommand( p_input, "USER %s", psz_user ) < 0 )
    {
        FREE( psz_user );
        goto exit_error;
    }
    FREE( psz_user );

    if( ftp_ReadCommand( p_input, &i_answer, NULL ) < 0)
    {
        msg_Err( p_input, "failed to get answer" );
        goto exit_error;
    }
    switch( i_answer / 100 )
    {
        case 2:
            msg_Dbg( p_input, "user accepted" );
            break;
        case 3:
            msg_Dbg( p_input, "password needed" );
            psz_pwd = config_GetPsz( p_input, "ftp-pwd" );
            if( ftp_SendCommand( p_input, "PASS %s", psz_pwd ) < 0 )
            {
                FREE( psz_pwd );
                goto exit_error;
            }
            FREE( psz_pwd );
            if( ftp_ReadCommand( p_input, &i_answer, NULL ) < 0)
            {
                msg_Err( p_input, "failed to get answer" );
                goto exit_error;
            }
            switch( i_answer / 100 )
            {
                case 2:
                    msg_Dbg( p_input, "password accepted" );
                    break;
                case 3:
                    msg_Dbg( p_input, "account needed" );
                    psz_account = config_GetPsz( p_input, "ftp-account" );
                    if( ftp_SendCommand( p_input, "ACCT %s", psz_account ) < 0 )
                    {
                        FREE( psz_account );
                        goto exit_error;
                    }
                    FREE( psz_account );
                    if( ftp_ReadCommand( p_input, &i_answer, NULL ) < 0)
                    {
                        msg_Err( p_input, "failed to get answer" );
                        goto exit_error;
                    }
                    if( i_answer / 100 != 2 )
                    {
                        msg_Err( p_input, "account rejected" );
                        goto exit_error;
                    }
                    else
                    {
                        msg_Dbg( p_input, "account accepted" );
                    }
                    break;
                default:
                    msg_Err( p_input, "password rejected" );
                    goto exit_error;
            }
            break;
        default:
            msg_Err( p_input, "user rejected" );
            goto exit_error;
    }

    if( ftp_SendCommand( p_input, "TYPE I" ) < 0 )
    {
        msg_Err( p_input, "cannot set binary transfert mode" );
        goto exit_error;
    }
    if( ftp_ReadCommand( p_input, &i_answer, NULL ) != 2 )
    {
        msg_Err( p_input, "cannot set binary transfert mode" );
        goto exit_error;
    }

    /* get size */
    if( ftp_SendCommand( p_input, "SIZE %s", p_url->psz_path ) < 0 )
    {
        msg_Err( p_input, "cannot get file size" );
        goto exit_error;
    }
    if( ftp_ReadCommand( p_input, &i_answer, &psz_arg ) != 2 )
    {
        msg_Err( p_input, "cannot get file size" );
        goto exit_error;
    }

#ifdef HAVE_ATOLL
    p_access->i_filesize = atoll( psz_arg + 4 );
#else
    {
341
        int64_t i_size = 0;
342
        char    *psz_parser = psz_arg + 4;
gbazin's avatar
   
gbazin committed
343
        int     sign = 1;
344

hartman's avatar
hartman committed
345
        while( *psz_parser == ' ' || *psz_parser == '\t' ) psz_parser++;
346

gbazin's avatar
   
gbazin committed
347
348
        if( *psz_parser == '-' ) sign = -1;
        while( *psz_parser >= '0' && *psz_parser <= '9' )
349
        {
gbazin's avatar
   
gbazin committed
350
            i_size = i_size * 10 + *psz_parser++ - '0';
351
        }
hartman's avatar
hartman committed
352
        p_access->i_filesize = i_size * sign;
353
354
355
    }
#endif

356
    msg_Dbg( p_input, "file size: "I64Fd, p_access->i_filesize );
357
358
359
360
361
362
363
364
365
366
    FREE( psz_arg );

    if( ftp_StartStream( p_input, 0 ) < 0 )
    {
        msg_Err( p_input, "cannot retrieve file" );
        goto exit_error;
    }
    /* *** set exported functions *** */
    p_input->pf_read = Read;
    p_input->pf_seek = Seek;
gbazin's avatar
   
gbazin committed
367
    p_input->pf_set_program = input_SetProgram;
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
    p_input->pf_set_area = NULL;

    p_input->p_private = NULL;

    /* *** finished to set some variable *** */
    vlc_mutex_lock( &p_input->stream.stream_lock );
    p_input->stream.b_pace_control = 1;
    p_input->stream.p_selected_area->i_tell = 0;
    p_input->stream.b_seekable = 1;
    p_input->stream.p_selected_area->i_size = p_access->i_filesize;
    p_input->stream.i_method = INPUT_METHOD_NETWORK;
    vlc_mutex_unlock( &p_input->stream.stream_lock );

    /* Update default_pts to a suitable value for ftp access */
    p_input->i_pts_delay = config_GetInt( p_input, "ftp-caching" ) * 1000;

    return( 0 );

exit_error:
    NetClose( p_input, &p_access->socket_cmd );
    FREE( p_access->url.psz_private );
    FREE( p_input->p_access_data );
    return( -1 );
}

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

    msg_Dbg( p_input, "stopping stream" );
    ftp_StopStream( p_input );

    if( ftp_SendCommand( p_input, "QUIT" ) < 0 )
    {
        msg_Err( p_input, "cannot quit" );
    }
    else
    {
        ftp_ReadCommand( p_input, NULL, NULL );
    }


    NetClose( p_input, &p_access->socket_cmd );

    /* free memory */
    FREE( p_access->url.psz_private );
}

/*****************************************************************************
 * Seek: try to go at the right place
 *****************************************************************************/
static void Seek( input_thread_t * p_input, off_t i_pos )
{
    //access_t    *p_access = (access_t*)p_input->p_access_data;
    if( i_pos < 0 )
    {
        return;
    }
    vlc_mutex_lock( &p_input->stream.stream_lock );

    msg_Dbg( p_input, "seeking to "I64Fd, i_pos );

    ftp_StopStream( p_input );
    ftp_StartStream( p_input, i_pos );

    p_input->stream.p_selected_area->i_tell = i_pos;
    vlc_mutex_unlock( &p_input->stream.stream_lock );
}

441
static ssize_t Read     ( input_thread_t * p_input, byte_t * p_buffer,
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
                          size_t i_len )
{
    access_t    *p_access = (access_t*)p_input->p_access_data;
    size_t      i_data;

    i_data = NetRead( p_input, &p_access->socket_data, p_buffer, i_len );

    return( i_data );
}

static int  ftp_SendCommand( input_thread_t *p_input, char *psz_fmt, ... )
{
    access_t        *p_access = (access_t*)p_input->p_access_data;
    va_list args;
    char    *psz_buffer;
457
#if !defined(HAVE_VASPRINTF) || defined(SYS_DARWIN) || defined(SYS_BEOS)
458
459
460
461
462
        size_t  i_size;
#endif

    va_start( args, psz_fmt );

463
#if defined(HAVE_VASPRINTF) && !defined(SYS_DARWIN) && !defined(SYS_BEOS)
464
465
466
    vasprintf( &psz_buffer, psz_fmt, args );
#else
    i_size = strlen( psz_fmt ) + 2048;
Laurent Aimar's avatar
Laurent Aimar committed
467
    psz_buffer = calloc( i_size, sizeof( char ) );
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
    vsnprintf( psz_buffer, i_size, psz_fmt, args );
    psz_buffer[i_size - 1] = 0;
#endif
    if( !strncmp( psz_buffer, "PASS", 4 ) )
    {
        msg_Dbg( p_input, "ftp_SendCommand:\"PASS xxx\"" );
    }
    else
    {
        msg_Dbg( p_input, "ftp_SendCommand:\"%s\"", psz_buffer );
    }
    psz_buffer = realloc( psz_buffer, strlen( psz_buffer ) + 3 );
    strcat( psz_buffer, "\r\n" );
    if( send( p_access->socket_cmd.i_handle,
              psz_buffer,
              strlen( psz_buffer ),
              0 ) == -1 )
    {
        FREE( psz_buffer );
        msg_Err( p_input, "failed to send command" );
        return( -1 );
    }
    FREE( psz_buffer );

    va_end( args );

    return( 0 );
}

#define BLOCK_SIZE  1024
/* TODO support this s**t :
 RFC 959 allows the client to send certain TELNET strings at any moment,
 even in the middle of a request:

 * \377\377.
 * \377\376x where x is one byte.
 * \377\375x where x is one byte. The server is obliged to send \377\374x
 *                                immediately after reading x.
 * \377\374x where x is one byte.
 * \377\373x where x is one byte. The server is obliged to send \377\376x
 *                                immediately after reading x.
 * \377x for any other byte x.

 These strings are not part of the requests, except in the case \377\377,
 where the request contains one \377. */

static int  ftp_ReadCommand( input_thread_t *p_input,
                             int *pi_answer, char **ppsz_answer )
{
    access_t        *p_access = (access_t*)p_input->p_access_data;
    uint8_t *p_buffer;
    int     i_buffer;
    int     i_buffer_size;

    int i_answer;

    i_buffer      = 0;
    i_buffer_size = BLOCK_SIZE + 1;
    p_buffer      = malloc( BLOCK_SIZE + 1);

    for( ;; )
    {
        ssize_t i_read;
        i_read = NetRead( p_input, &p_access->socket_cmd,
                          p_buffer + i_buffer, BLOCK_SIZE );
        if( i_read <= 0 || p_input->b_die || p_input->b_error )
        {
            free( p_buffer );
            if( pi_answer )   *pi_answer    = 500;
            if( ppsz_answer ) *ppsz_answer  = NULL;
            return( -1 );
        }
        if( i_read == 0 )
        {
//            continue;
        }
        i_buffer += i_read;
        if( i_read < BLOCK_SIZE )
        {
            p_buffer[i_buffer] = '\0';
            break;
        }
        i_buffer_size += BLOCK_SIZE;
        p_buffer = realloc( p_buffer, i_buffer_size );
    }

    if( i_buffer < 3 )
    {
        goto exit_error;
    }

    i_answer = atoi( p_buffer );

    if( pi_answer ) *pi_answer = i_answer;
    if( ppsz_answer )
    {
        *ppsz_answer = p_buffer;
    }
    else
    {
        free( p_buffer );
    }
    return( i_answer / 100 );

exit_error:
    free( p_buffer );
    if( pi_answer )   *pi_answer    = 500;
    if( ppsz_answer ) *ppsz_answer  = NULL;
    return( -1 );
}

static int  ftp_StartStream( input_thread_t *p_input, off_t i_start )
{
    access_t        *p_access = (access_t*)p_input->p_access_data;

    char psz_ip[1000];
    int  i_answer;
    char *psz_arg, *psz_parser;
    int  a1,a2,a3,a4;
    int  p1,p2;
    int  i_port;
    module_t            *p_network;
    network_socket_t    socket_desc;

    if( ftp_SendCommand( p_input, "PASV" ) < 0 )
    {
        msg_Err( p_input, "cannot set passive transfert mode" );
        return( -1 );
    }
    if( ftp_ReadCommand( p_input, &i_answer, &psz_arg ) != 2 )
    {
        msg_Err( p_input, "cannot set passive transfert mode" );
        return( -1 );
    }
    psz_parser = strchr( psz_arg, '(' );
    if( !psz_parser || sscanf( psz_parser, "(%d,%d,%d,%d,%d,%d", &a1, &a2, &a3, &a4, &p1, &p2 ) < 6 )
    {
        FREE( psz_arg );
        msg_Err( p_input, "cannot get ip/port for passive transfert mode" );
        return( -1 );
    }
    FREE( psz_arg );

    sprintf( psz_ip, "%d.%d.%d.%d", a1, a2, a3, a4 );
    i_port = p1 * 256 + p2;
    msg_Dbg( p_input, "ip:%s port:%d", psz_ip, i_port );

    if( ftp_SendCommand( p_input, "TYPE I" ) < 0 )
    {
        msg_Err( p_input, "cannot set binary transfert mode" );
        return( -1 );
    }
    if( ftp_ReadCommand( p_input, &i_answer, NULL ) != 2 )
    {
        msg_Err( p_input, "cannot set binary transfert mode" );
        return( -1 );
    }


    if( i_start > 0 )
    {
        if( ftp_SendCommand( p_input, "REST "I64Fu, i_start ) < 0 )
        {
            msg_Err( p_input, "cannot set restart point" );
            return( -1 );
        }
        if( ftp_ReadCommand( p_input, &i_answer, NULL ) > 3 )
        {
            msg_Err( p_input, "cannot set restart point" );
            return( -1 );
        }
    }

    msg_Dbg( p_input, "waiting for data connection..." );
    socket_desc.i_type = NETWORK_TCP;
    socket_desc.psz_server_addr = psz_ip;
    socket_desc.i_server_port   = i_port;
    socket_desc.psz_bind_addr   = "";
    socket_desc.i_bind_port     = 0;
    p_input->p_private = (void*)&socket_desc;
    if( !( p_network = module_Need( p_input, "network", "" ) ) )
    {
        msg_Err( p_input, "failed to connect with server" );
        return( -1 );
    }
    module_Unneed( p_input, p_network );
    p_access->socket_data.i_handle = socket_desc.i_handle;
    p_input->i_mtu    = socket_desc.i_mtu;
    msg_Dbg( p_input,
             "connection with \"%s:%d\" successful",
             psz_ip, i_port );

    if( ftp_SendCommand( p_input, "RETR %s", p_access->url.psz_path ) < 0 )
    {
        msg_Err( p_input, "cannot retreive file" );
        return( -1 );
    }
    /* "1xx" message */
    if( ftp_ReadCommand( p_input, &i_answer, NULL ) > 2 )
    {
        msg_Err( p_input, "cannot retreive file" );
        return( -1 );
    }

    return( 0 );
}

static int  ftp_StopStream ( input_thread_t *p_input)
{
    access_t        *p_access = (access_t*)p_input->p_access_data;

    int i_answer;

    NetClose( p_input, &p_access->socket_data );

    if( ftp_SendCommand( p_input, "ABOR" ) < 0 )
    {
        msg_Err( p_input, "cannot abord file" );
    }
    else
    {
        ftp_ReadCommand( p_input, &i_answer, NULL );
        ftp_ReadCommand( p_input, &i_answer, NULL );
    }

    return( 0 );
}

/****************************************************************************
 *
 ****************************************************************************/
static void ftp_ParseURL( url_t *p_url, char *psz_url )
{
    char *psz_parser;
    char *psz_server_port;

    p_url->psz_private = strdup( psz_url );

    psz_parser = p_url->psz_private;

    while( *psz_parser == '/' )
    {
        psz_parser++;
    }
    p_url->psz_server_addr = psz_parser;

    while( *psz_parser &&
           *psz_parser != ':' &&  *psz_parser != '/' && *psz_parser != '@' )
    {
        psz_parser++;
    }

    if( *psz_parser == ':' )
    {
        *psz_parser = '\0';
        psz_parser++;
        psz_server_port = psz_parser;

        while( *psz_parser && *psz_parser != '/' )
        {
            psz_parser++;
        }
    }
    else
    {
        psz_server_port = "";
    }

    if( *psz_parser == '@' )
    {
        char *psz_bind_port;

        *psz_parser = '\0';
        psz_parser++;

        p_url->psz_bind_addr = psz_parser;

        while( *psz_parser && *psz_parser != ':' && *psz_parser != '/' )
        {
            psz_parser++;
        }

        if( *psz_parser == ':' )
        {
            *psz_parser = '\0';
            psz_parser++;
            psz_bind_port = psz_parser;

            while( *psz_parser && *psz_parser != '/' )
            {
                psz_parser++;
            }
        }
        else
        {
            psz_bind_port = "";
        }
        if( *psz_bind_port )
        {
            p_url->i_bind_port = strtol( psz_bind_port, &psz_parser, 10 );
        }
        else
        {
            p_url->i_bind_port = 0;
        }
    }
    else
    {
        p_url->psz_bind_addr = "";
        p_url->i_bind_port = 0;
    }

    if( *psz_parser == '/' )
    {
        *psz_parser = '\0';
        psz_parser++;
        p_url->psz_path = psz_parser;
    }

    if( *psz_server_port )
    {
        p_url->i_server_port = strtol( psz_server_port, &psz_parser, 10 );
    }
    else
    {
        p_url->i_server_port = 0;
    }
}

/*****************************************************************************
 * Read: read on a file descriptor, checking b_die periodically
 *****************************************************************************/
static ssize_t NetRead( input_thread_t *p_input,
                        input_socket_t *p_socket,
                        byte_t *p_buffer, size_t i_len )
{
#ifdef UNDER_CE
    return -1;

#else
    struct timeval  timeout;
    fd_set          fds;
gbazin's avatar
   
gbazin committed
810
    ssize_t         i_recv;
811
812
813
814
815
816
817
    int             i_ret;

    /* Initialize file descriptor set */
    FD_ZERO( &fds );
    FD_SET( p_socket->i_handle, &fds );

    /* We'll wait 1 second if nothing happens */
gbazin's avatar
   
gbazin committed
818
819
    timeout.tv_sec  = 1;
    timeout.tv_usec = 0;
820
821

    /* Find if some data is available */
gbazin's avatar
   
gbazin committed
822
823
824
825
    while( (i_ret = select( p_socket->i_handle + 1, &fds,
                            NULL, NULL, &timeout )) == 0
           || (i_ret < 0 && errno == EINTR) )
    {
gbazin's avatar
   
gbazin committed
826
827
        FD_ZERO( &fds );
        FD_SET( p_socket->i_handle, &fds );
gbazin's avatar
   
gbazin committed
828
829
830
        timeout.tv_sec  = 1;
        timeout.tv_usec = 0;

gbazin's avatar
   
gbazin committed
831
832
833
834
835
        if( p_input->b_die || p_input->b_error )
        {
            return 0;
        }
    }
836

gbazin's avatar
   
gbazin committed
837
    if( i_ret < 0 )
838
839
    {
        msg_Err( p_input, "network select error (%s)", strerror(errno) );
gbazin's avatar
   
gbazin committed
840
        return -1;
841
842
    }

gbazin's avatar
   
gbazin committed
843
    i_recv = recv( p_socket->i_handle, p_buffer, i_len, 0 );
844

gbazin's avatar
   
gbazin committed
845
846
847
    if( i_recv < 0 )
    {
        msg_Err( p_input, "recv failed (%s)", strerror(errno) );
848
849
    }

gbazin's avatar
   
gbazin committed
850
    return i_recv;
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865

#endif
}

static void NetClose( input_thread_t *p_input, input_socket_t *p_socket )
{
#if defined( UNDER_CE )
    CloseHandle( (HANDLE)p_socket->i_handle );
#elif defined( WIN32 )
    closesocket( p_socket->i_handle );
#else
    close( p_socket->i_handle );
#endif
}