summaryrefslogtreecommitdiffstats
path: root/tdeioslave/iso/kiso.cpp
blob: fdd2df413a239a0af38d4648f8a53f11c079e825 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
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
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
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
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
/***************************************************************************
                                kiso.cpp
                             -------------------
    begin                : Oct 25 2002
    copyright            : (C) 2002 by Szombathelyi Gy�gy
    email                : gyurco@users.sourceforge.net
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 file is heavily based on ktar.cpp from tdelibs (c) David Faure */
 
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <grp.h>
#include <pwd.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>

#include <tqcstring.h>
#include <tqdir.h>
#include <tqfile.h>
#include <kdebug.h>
#include <kurl.h>
#include <kmimetype.h>
#include <tdeconfig.h>
#include <kfilterdev.h>
#include <kfilterbase.h>

#include "kiso.h"
#include "libisofs/isofs.h"
#include "qfilehack.h"


#ifdef __linux__
#undef __STRICT_ANSI__
#include <linux/cdrom.h>
#define __STRICT_ANSI__
#include <sys/ioctl.h>
#include <fcntl.h>
#endif

////////////////////////////////////////////////////////////////////////
/////////////////////////// KIso ///////////////////////////////////
////////////////////////////////////////////////////////////////////////

/**
 * puts the track layout of the device 'fname' into 'tracks'
 * tracks structure: start sector, track number, ...
 * tracks should be 100*2 entry long (this is the maximum in the CD-ROM standard)
 * currently it's linux only, porters are welcome
 */
static int getTracks(const char *fname,int *tracks) {
    int ret=0;
    memset(tracks,0,200*sizeof(int));

#ifdef __linux__
    int fd,i;
    struct cdrom_tochdr tochead;
    struct cdrom_tocentry tocentry;

    kdDebug() << "getTracks open:" << fname << endl;
    fd=open(fname, O_RDONLY | O_NONBLOCK);
    if (fd > 0) {
        if (ioctl(fd,CDROMREADTOCHDR,&tochead)!=-1) {
            kdDebug() << "getTracks first track:" << tochead.cdth_trk0
                << " last track " << tochead.cdth_trk1 << endl;
            for (i=tochead.cdth_trk0;i<=tochead.cdth_trk1;i++) {
                if (ret>99) break;
                memset(&tocentry,0,sizeof(struct cdrom_tocentry));
                tocentry.cdte_track=i;
                tocentry.cdte_format=CDROM_LBA;
                if (ioctl(fd,CDROMREADTOCENTRY,&tocentry)<0) break;
                kdDebug() << "getTracks got track " << i << " starting at: " <<
                    tocentry.cdte_addr.lba << endl;
                if ((tocentry.cdte_ctrl & 0x4) == 0x4) {
                    tracks[ret<<1]=tocentry.cdte_addr.lba;
                    tracks[(ret<<1)+1]=i;
                    ret++;
                }
            }
        }
        close(fd);
    }

#endif

    return ret;
}

class KIso::KIsoPrivate
{
public:
    KIsoPrivate() {}
    TQStringList dirList;
};

KIso::KIso( const TQString& filename, const TQString & _mimetype )
    : KArchive( 0L )
{
    m_startsec = -1;
    m_filename = filename;
    d = new KIsoPrivate;
    TQString mimetype( _mimetype );
    bool forced = true;
    if ( mimetype.isEmpty() )
    {
        mimetype = KMimeType::findByFileContent( filename )->name();
        kdDebug() << "KIso::KIso mimetype=" << mimetype << endl;

        // Don't move to prepareDevice - the other constructor theoretically allows ANY filter
        if ( mimetype == "application/x-tgz" || mimetype == "application/x-targz" || // the latter is deprecated but might still be around
             mimetype == "application/x-webarchive" )
            // that's a gzipped tar file, so ask for gzip filter
            mimetype = "application/x-gzip";
        else if ( mimetype == "application/x-tbz" ) // that's a bzipped2 tar file, so ask for bz2 filter
            mimetype = "application/x-bzip2";
        else
        {
            // Something else. Check if it's not really gzip though (e.g. for KOffice docs)
            TQFile file( filename );
            if ( file.open( IO_ReadOnly ) )
            {
                unsigned char firstByte = file.getch();
                unsigned char secondByte = file.getch();
                unsigned char thirdByte = file.getch();
                if ( firstByte == 0037 && secondByte == 0213 )
                    mimetype = "application/x-gzip";
                else if ( firstByte == 'B' && secondByte == 'Z' && thirdByte == 'h' )
                    mimetype = "application/x-bzip2";
                else if ( firstByte == 'P' && secondByte == 'K' && thirdByte == 3 )
                {
                    unsigned char fourthByte = file.getch();
                    if ( fourthByte == 4 )
                        mimetype = "application/x-zip";
                }
            }
        }
        forced = false;
    }

    prepareDevice( filename, mimetype, forced );
}

void KIso::prepareDevice( const TQString & filename,
                            const TQString & mimetype, bool forced )
{
  /* 'hack' for Qt's false assumption that only S_ISREG is seekable */
  if( "inode/blockdevice" == mimetype )
      setDevice( new QFileHack( filename ) );
  else
  {
    if( "application/x-gzip" == mimetype
       || "application/x-bzip2" == mimetype)
        forced = true;

    TQIODevice *dev = KFilterDev::deviceForFile( filename, mimetype, forced );
    if( dev )
      setDevice( dev );
  }

}

KIso::KIso( TQIODevice * dev )
    : KArchive( dev )
{
    d = new KIsoPrivate;
}

KIso::~KIso()
{
    // mjarrett: Closes to prevent ~KArchive from aborting w/o device
    if( isOpened() )
        close();
    if ( !m_filename.isEmpty() )
        delete device(); // we created it ourselves
    delete d;
}

/* callback function for libisofs */
static int readf(char *buf, long long start, long long len,void *udata) {

    TQIODevice* dev = ( static_cast<KIso*>(udata) )->device();

    if (dev->at(start<<11)) {
        if ((dev->readBlock(buf, len<<11)) != -1) return (len);
    }
    kdDebug() << "KIso::ReadRequest failed start: " << start << " len: " << len << endl;

    return -1;
}

/* callback function for libisofs */
static int mycallb(struct iso_directory_record *idr,void *udata) {

    KIso *iso = static_cast<KIso*> (udata);
    TQString path,user,group,symlink;
    int i;
    int access;
    int time,cdate,adate;
    rr_entry rr;
    bool special=false;
    KArchiveEntry *entry=NULL,*oldentry=NULL;
    char z_algo[2],z_params[2];
    long long z_size=0;

    if ((idr->flags[0] & 1) && !iso->showhidden) return 0;
    if (iso->level) {
        if (isonum_711(idr->name_len)==1) {
            switch (idr->name[0]) {
                case 0:
                    path+=(".");
                    special=true;
                    break;
                case 1:
                    path+=("..");
                    special=true;
                    break;
            }
        }
        if (iso->showrr && ParseRR(idr,&rr)>0) {
            if (!special) path=rr.name;
            symlink=rr.sl;
            access=rr.mode;
            time=rr.t_mtime;
            adate=rr.t_atime;
            cdate=rr.t_ctime;
            user.setNum(rr.uid);
            group.setNum(rr.gid);
            z_algo[0]=rr.z_algo[0];z_algo[1]=rr.z_algo[1];
            z_params[0]=rr.z_params[0];z_params[1]=rr.z_params[1];
            z_size=rr.z_size;
        } else {
            access=iso->dirent->permissions() & ~S_IFMT;
            adate=cdate=time=isodate_915(idr->date,0);
            user=iso->dirent->user();
            group=iso->dirent->group();
            if (idr->flags[0] & 2) access |= S_IFDIR; else access |= S_IFREG;
            if (!special) {
                if (iso->joliet) {
                    for (i=0;i<(isonum_711(idr->name_len)-1);i+=2) {
                        TQChar ch( be2me_16(*((ushort*)&(idr->name[i]))) );
                        if (ch==';') break;
                        path+=ch;
                    }
                } else {
                    for (i=0;i<isonum_711(idr->name_len);i++) {
                        if (idr->name[i]==';') break;
                        if (idr->name[i]) path+=(idr->name[i]);
                    }
                }
                if (path.endsWith(".")) path.setLength(path.length()-1);
            }
        }
        if (iso->showrr) FreeRR(&rr);
        if (idr->flags[0] & 2) {
            entry = new KIsoDirectory( iso, path, access | S_IFDIR, time, adate, cdate,
                user, group, symlink );
        } else {
            entry = new KIsoFile( iso, path, access, time, adate, cdate,
                user, group, symlink, isonum_733(idr->extent)<<11,isonum_733(idr->size) );
            if (z_size) (static_cast <KIsoFile*> (entry))->setZF(z_algo,z_params,z_size);

        }
        iso->dirent->addEntry(entry);
    }
    if ( (idr->flags[0] & 2) && (iso->level==0 || !special) ) {
        if (iso->level) {
            oldentry=iso->dirent;
            iso->dirent=static_cast<KIsoDirectory*> (entry);
        }
        iso->level++;
        ProcessDir(&readf,isonum_733(idr->extent),isonum_733(idr->size),&mycallb,udata);
        iso->level--;
        if (iso->level) iso->dirent=static_cast<KIsoDirectory*> (oldentry);
    }
    return 0;
}

void KIso::addBoot(struct el_torito_boot_descriptor* bootdesc) {

    int i;
    long long size;
    boot_head boot;
    boot_entry *be;
    TQString path;
    KIsoFile *entry;
    
    entry=new KIsoFile( this, "Catalog", dirent->permissions() & ~S_IFDIR,
        dirent->date(), dirent->adate(), dirent->cdate(),
        dirent->user(), dirent->group(), TQString::null,
        isonum_731(bootdesc->boot_catalog)<<11, 2048 );
    dirent->addEntry(entry);
    if (!ReadBootTable(&readf,isonum_731(bootdesc->boot_catalog),&boot,this)) {
        i=1;
        be=boot.defentry;
        while (be) {
            size=BootImageSize( isonum_711((reinterpret_cast<struct default_entry*>(be->data))->media),
                                isonum_721((reinterpret_cast<struct default_entry*>(be->data))->seccount));
            path="Default Image";
            if (i>1) path += " (" + TQString::number(i) + ")";
            entry=new KIsoFile( this, path, dirent->permissions() & ~S_IFDIR,
                dirent->date(), dirent->adate(), dirent->cdate(),
                dirent->user(), dirent->group(), TQString::null,
                isonum_731((reinterpret_cast<struct default_entry*>(be->data))->start)<<11, size<<9 );
            dirent->addEntry(entry);
            be=be->next;
            i++;
        }

        FreeBootTable(&boot);
    }
}

void KIso::readParams()
{
    TDEConfig *config;

    config = new TDEConfig("tdeio_isorc");
    
    showhidden=config->readBoolEntry("showhidden",false);
    showrr=config->readBoolEntry("showrr",true);
    delete config;
}

bool KIso::openArchive( int mode )
{
    iso_vol_desc *desc;
    TQString path,tmp,uid,gid;
    struct stat buf;
    int tracks[2*100],trackno=0,i,access,c_b,c_i,c_j;
    KArchiveDirectory *root;
    struct iso_directory_record* idr;
    struct el_torito_boot_descriptor* bootdesc;

    if ( mode == IO_WriteOnly )
        return false;

    readParams();
    d->dirList.clear();

    tracks[0]=0;
    if (m_startsec>0) tracks[0]=m_startsec;
    kdDebug() << " m_startsec: " << m_startsec << endl;
    /* We'll use the permission and user/group of the 'host' file except
     * in Rock Ridge, where the permissions are stored on the file system
     */
    if (::stat( m_filename.local8Bit(), &buf )<0) {
        /* defaults, if stat fails */
        memset(&buf,0,sizeof(struct stat));
        buf.st_mode=0777;
    } else {
        /* If it's a block device, try to query the track layout (for multisession) */
        if (m_startsec == -1 && S_ISBLK(buf.st_mode))
            trackno=getTracks(m_filename.latin1(),(int*) &tracks);
    }
    uid.setNum(buf.st_uid);
    gid.setNum(buf.st_gid);
    access = buf.st_mode & ~S_IFMT;

    kdDebug() << "KIso::openArchive number of tracks: " << trackno << endl;

    if (trackno==0) trackno=1;
    for (i=0;i<trackno;i++) {

        c_b=1;c_i=1;c_j=1;       
        root=rootDir();
        if (trackno>1) {
            path=TQString::null;
            TQTextOStream(&path) << "Track " << tracks[(i<<1)+1];
            root = new KIsoDirectory( this, path, access | S_IFDIR,
                buf.st_mtime, buf.st_atime, buf.st_ctime, uid, gid, TQString::null );
            rootDir()->addEntry(root);
        }

        desc=ReadISO9660(&readf,tracks[i<<1],this);
        if (!desc) {
            kdDebug() << "KIso::openArchive no volume descriptors" << endl;
            continue;
        }

        while (desc) {
            switch (isonum_711(desc->data.type)) {
                case ISO_VD_BOOT:

                    bootdesc=(struct el_torito_boot_descriptor*) &(desc->data);
                    if ( !memcmp(EL_TORITO_ID,bootdesc->system_id,ISODCL(8,39)) ) {
                        path="El Torito Boot";
                        if (c_b>1) path += " (" + TQString::number(c_b) + ")";
                        
                        dirent = new KIsoDirectory( this, path, access | S_IFDIR,
                            buf.st_mtime, buf.st_atime, buf.st_ctime, uid, gid, TQString::null );
                        root->addEntry(dirent);
                        
                        addBoot(bootdesc);
                        c_b++;
                    }
                    break;

                case ISO_VD_PRIMARY:
                case ISO_VD_SUPPLEMENTARY:
                    idr=(struct iso_directory_record*) &( ((struct iso_primary_descriptor*) &desc->data)->root_directory_record);
                    joliet = JolietLevel(&desc->data);
                    if (joliet) {
                        TQTextOStream(&path) << "Joliet level " << joliet;
                        if (c_j>1) path += " (" + TQString::number(c_j) + ")";
                    } else {
                        path = "ISO9660";
                        if (c_i>1) path += " (" + TQString::number(c_i) + ")";
                    }
                    dirent = new KIsoDirectory( this, path, access | S_IFDIR,
                        buf.st_mtime, buf.st_atime, buf.st_ctime, uid, gid, TQString::null );
                    root->addEntry(dirent);
                    level=0;
                    mycallb(idr, this );
                    if (joliet) c_j++; else c_i++;
                    break;
            }
            desc=desc->next;
        }
        free(desc);
    }
    device()->close();
    return true;
}

bool KIso::closeArchive()
{
    d->dirList.clear();
    return true;
}

bool KIso::writeDir( const TQString&, const TQString&, const TQString& )
{
    return false;
}

bool KIso::prepareWriting( const TQString&, const TQString&, const TQString&, uint)
{
    return false;
}

bool KIso::doneWriting( uint )
{
    return false;
}

void KIso::virtual_hook( int id, void* data )
{ KArchive::virtual_hook( id, data ); }