1/*
2 * $Id: appl.c,v 1.18.4.1 2010-02-01 10:56:08 franklahm Exp $
3 *
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved.  See COPYRIGHT.
6 */
7
8#ifdef HAVE_CONFIG_H
9#include "config.h"
10#endif /* HAVE_CONFIG_H */
11
12#include <stdio.h>
13#include <stdlib.h>
14#include <string.h>
15#include <ctype.h>
16
17#include <sys/param.h>
18#include <atalk/logger.h>
19#include <errno.h>
20
21#include <atalk/adouble.h>
22#include <atalk/afp.h>
23#include <atalk/bstrlib.h>
24#include <atalk/bstradd.h>
25#include <atalk/globals.h>
26
27#include "volume.h"
28#include "directory.h"
29#include "file.h"
30#include "desktop.h"
31
32static struct savedt	sa = { { 0, 0, 0, 0 }, -1, 0, 0};
33
34static int pathcmp(char *p, int plen, char *q, int qlen)
35{
36    return (( plen == qlen && memcmp( p, q, plen ) == 0 ) ? 0 : 1 );
37}
38
39static int applopen(struct vol *vol, u_char creator[ 4 ], int flags, int mode)
40{
41    char	*dtf, *adt, *adts;
42
43    if ( sa.sdt_fd != -1 ) {
44        if ( !(flags & ( O_RDWR | O_WRONLY )) &&
45                memcmp( sa.sdt_creator, creator, sizeof( CreatorType )) == 0 &&
46                sa.sdt_vid == vol->v_vid ) {
47            return( AFP_OK );
48        }
49        close( sa.sdt_fd );
50        sa.sdt_fd = -1;
51    }
52
53    dtf = dtfile( vol, creator, ".appl" );
54
55    if (( sa.sdt_fd = open( dtf, flags, ad_mode( dtf, mode ))) < 0 ) {
56        if ( errno == ENOENT && ( flags & O_CREAT )) {
57            if (( adts = strrchr( dtf, '/' )) == NULL ) {
58                return( AFPERR_PARAM );
59            }
60            *adts = '\0';
61            if (( adt = strrchr( dtf, '/' )) == NULL ) {
62                return( AFPERR_PARAM );
63            }
64            *adt = '\0';
65            (void) ad_mkdir( dtf, DIRBITS | 0777 );
66            *adt = '/';
67            (void) ad_mkdir( dtf, DIRBITS | 0777 );
68            *adts = '/';
69
70            if (( sa.sdt_fd = open( dtf, flags, ad_mode( dtf, mode ))) < 0 ) {
71                return( AFPERR_PARAM );
72            }
73        } else {
74            return( AFPERR_PARAM );
75        }
76    }
77    memcpy( sa.sdt_creator, creator, sizeof( CreatorType ));
78    sa.sdt_vid = vol->v_vid;
79    sa.sdt_index = 0;
80    return( AFP_OK );
81}
82
83/*
84 * copy appls to new file, deleting any matching (old) appl entries
85 */
86static int copyapplfile(int sfd, int dfd, char *mpath, u_short mplen)
87{
88    int		cc;
89    char	*p;
90    u_int16_t	len;
91    u_char	appltag[ 4 ];
92    char	buf[ MAXPATHLEN ];
93
94    while (( cc = read( sfd, buf, sizeof(appltag) + sizeof( u_short ))) > 0 ) {
95        p = buf + sizeof(appltag);
96        memcpy( &len, p, sizeof(len));
97        len = ntohs( len );
98        p += sizeof( len );
99        if (( cc = read( sa.sdt_fd, p, len )) < len ) {
100            break;
101        }
102        if ( pathcmp( mpath, mplen, p, len ) != 0 ) {
103            p += len;
104            if ( write( dfd, buf, p - buf ) != p - buf ) {
105                cc = -1;
106                break;
107            }
108        }
109    }
110    return( cc );
111}
112
113/*
114 * build mac. path (backwards) by traversing the directory tree
115 *
116 * The old way: dir and path refer to an app, path is a mac format
117 * pathname.  makemacpath() builds something that looks like a cname,
118 * but uses upaths instead of mac format paths.
119 *
120 * The new way: dir and path refer to an app, path is a mac format
121 * pathname.  makemacpath() builds a cname. (zero is a path separator
122 * and it's not \0 terminated).
123 *
124 * See afp_getappl() for the backward compatiblity code.
125 */
126static char *
127makemacpath(const struct vol *vol, char *mpath, int mpathlen, struct dir *dir, char *path)
128{
129    char	*p;
130
131    p = mpath + mpathlen;
132    p -= strlen( path );
133    memcpy( p, path, strlen( path ));
134
135    while ( dir->d_did != DIRDID_ROOT ) {
136        p -= blength(dir->d_m_name) + 1;
137        if (p < mpath) {
138            /* FIXME: pathname too long */
139            return NULL;
140        }
141        memcpy(p, cfrombstr(dir->d_m_name), blength(dir->d_m_name) + 1);
142        if ((dir = dirlookup(vol, dir->d_pdid)) == NULL)
143            return NULL;
144    }
145    return( p );
146
147
148#if 0
149    char buffer[12 + MAXPATHLEN + 1];
150    int buflen = 12 + MAXPATHLEN + 1;
151    char *ret = mpath;
152    char *path = name;
153    char *uname = NULL;
154    struct bstrList *pathlist = NULL;
155    cnid_t cnid = dir->d_pdid;
156
157    /* Create list for path elements, request 16 list elements for now*/
158    if ((pathlist = bstListCreateMin(16)) == NULL) {
159        LOG(log_error, logtype_afpd, "makemacpath: OOM: %s", strerror(errno));
160        return NULL;
161    }
162
163    while ( cnid != DIRDID_ROOT ) {
164
165        /* construct path, copy already found uname to path element list*/
166        if ((bstrListPush(pathlist, bfromcstr(path))) != BSTR_OK) {
167            afp_errno = AFPERR_MISC;
168            ret = NULL;
169            goto exit;
170        }
171
172        /* next part */
173        if ((uname = cnid_resolve(vol->v_cdb, &cnid, buffer, buflen)) == NULL ) {
174            afp_errno = AFPERR_NOOBJ;
175            ret = NULL;
176            goto exit;
177        }
178
179        if ((path = utompath(vol, uname, cnid, utf8_encoding())) == NULL) {
180            afp_errno = AFPERR_MISC;
181            ret = NULL;
182            goto exit;
183        }
184    }
185
186
187
188exit:
189    if (pathlist)
190        bstrListDestroy(pathlist);
191
192    return(ret);
193#endif
194}
195
196
197int afp_addappl(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
198{
199    struct vol		*vol;
200    struct dir		*dir;
201    int			tfd, cc;
202    u_int32_t           did;
203    u_int16_t		vid, mplen;
204    struct path         *path;
205    char                *dtf, *p, *mp;
206    u_char		creator[ 4 ];
207    u_char		appltag[ 4 ];
208    char		*mpath, *tempfile;
209
210    *rbuflen = 0;
211    ibuf += 2;
212
213    memcpy( &vid, ibuf, sizeof( vid ));
214    ibuf += sizeof( vid );
215    if (NULL == ( vol = getvolbyvid( vid ))) {
216        return( AFPERR_PARAM );
217    }
218
219    memcpy( &did, ibuf, sizeof( did ));
220    ibuf += sizeof( did );
221    if (NULL == ( dir = dirlookup( vol, did )) ) {
222        return afp_errno;
223    }
224
225    memcpy( creator, ibuf, sizeof( creator ));
226    ibuf += sizeof( creator );
227
228    memcpy( appltag, ibuf, sizeof( appltag ));
229    ibuf += sizeof( appltag );
230
231    if (NULL == ( path = cname( vol, dir, &ibuf )) ) {
232        return get_afp_errno(AFPERR_PARAM);
233    }
234    if ( path_isadir(path) ) {
235        return( AFPERR_BADTYPE );
236    }
237
238    if ( applopen( vol, creator, O_RDWR|O_CREAT, 0666 ) != AFP_OK ) {
239        return( AFPERR_PARAM );
240    }
241    if ( lseek( sa.sdt_fd, 0L, SEEK_SET ) < 0 ) {
242        return( AFPERR_PARAM );
243    }
244    dtf = dtfile( vol, creator, ".appl.temp" );
245    tempfile = obj->oldtmp;
246    strcpy( tempfile, dtf );
247    if (( tfd = open( tempfile, O_RDWR|O_CREAT, 0666 )) < 0 ) {
248        return( AFPERR_PARAM );
249    }
250    mpath = obj->newtmp;
251    mp = makemacpath( vol, mpath, AFPOBJ_TMPSIZ, curdir, path->m_name );
252    if (!mp) {
253        return AFPERR_PARAM;
254    }
255    mplen =  mpath + AFPOBJ_TMPSIZ - mp;
256
257    /* write the new appl entry at start of temporary file */
258    p = mp - sizeof( u_short );
259    mplen = htons( mplen );
260    memcpy( p, &mplen, sizeof( mplen ));
261    mplen = ntohs( mplen );
262    p -= sizeof( appltag );
263    memcpy(p, appltag, sizeof( appltag ));
264    cc = mpath + AFPOBJ_TMPSIZ - p;
265    if ( write( tfd, p, cc ) != cc ) {
266        unlink( tempfile );
267        return( AFPERR_PARAM );
268    }
269    cc = copyapplfile( sa.sdt_fd, tfd, mp, mplen );
270    close( tfd );
271    close( sa.sdt_fd );
272    sa.sdt_fd = -1;
273
274    if ( cc < 0 ) {
275        unlink( tempfile );
276        return( AFPERR_PARAM );
277    }
278    if ( rename( tempfile, dtfile( vol, creator, ".appl" )) < 0 ) {
279        return( AFPERR_PARAM );
280    }
281    return( AFP_OK );
282}
283
284int afp_rmvappl(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
285{
286    struct vol		*vol;
287    struct dir		*dir;
288    int			tfd, cc;
289    u_int32_t           did;
290    u_int16_t		vid, mplen;
291    struct path    	*path;
292    char                *dtf, *mp;
293    u_char		creator[ 4 ];
294    char                *tempfile, *mpath;
295
296    *rbuflen = 0;
297    ibuf += 2;
298
299    memcpy( &vid, ibuf, sizeof( vid ));
300    ibuf += sizeof( vid );
301    if (NULL == ( vol = getvolbyvid( vid ))) {
302        return( AFPERR_PARAM );
303    }
304
305    memcpy( &did, ibuf, sizeof( did ));
306    ibuf += sizeof( did );
307    if (NULL == ( dir = dirlookup( vol, did )) ) {
308        return afp_errno;
309    }
310
311    memcpy( creator, ibuf, sizeof( creator ));
312    ibuf += sizeof( creator );
313
314    if (NULL == ( path = cname( vol, dir, &ibuf )) ) {
315        return get_afp_errno(AFPERR_PARAM);
316    }
317    if ( path_isadir(path) ) {
318        return( AFPERR_BADTYPE );
319    }
320
321    if ( applopen( vol, creator, O_RDWR, 0666 ) != AFP_OK ) {
322        return( AFPERR_NOOBJ );
323    }
324    if ( lseek( sa.sdt_fd, 0L, SEEK_SET ) < 0 ) {
325        return( AFPERR_PARAM );
326    }
327    dtf = dtfile( vol, creator, ".appl.temp" );
328    tempfile = obj->oldtmp;
329    strcpy( tempfile, dtf );
330    if (( tfd = open( tempfile, O_RDWR|O_CREAT, 0666 )) < 0 ) {
331        return( AFPERR_PARAM );
332    }
333    mpath = obj->newtmp;
334    mp = makemacpath( vol, mpath, AFPOBJ_TMPSIZ, curdir, path->m_name );
335    if (!mp) {
336        return AFPERR_PARAM ;
337    }
338
339    mplen =  mpath + AFPOBJ_TMPSIZ - mp;
340    cc = copyapplfile( sa.sdt_fd, tfd, mp, mplen );
341    close( tfd );
342    close( sa.sdt_fd );
343    sa.sdt_fd = -1;
344
345    if ( cc < 0 ) {
346        unlink( tempfile );
347        return( AFPERR_PARAM );
348    }
349    if ( rename( tempfile, dtfile( vol, creator, ".appl" )) < 0 ) {
350        return( AFPERR_PARAM );
351    }
352    return( AFP_OK );
353}
354
355int afp_getappl(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
356{
357    struct vol		*vol;
358    char		*p, *q;
359    int			cc;
360    size_t		buflen;
361    u_int16_t		vid, aindex, bitmap, len;
362    u_char		creator[ 4 ];
363    u_char		appltag[ 4 ];
364    char                *buf, *cbuf;
365    struct path         *path;
366
367    ibuf += 2;
368
369    memcpy( &vid, ibuf, sizeof( vid ));
370    ibuf += sizeof( vid );
371    if (NULL == ( vol = getvolbyvid( vid )) ) {
372        *rbuflen = 0;
373        return( AFPERR_PARAM );
374    }
375
376    memcpy( creator, ibuf, sizeof( creator ));
377    ibuf += sizeof( creator );
378
379    memcpy( &aindex, ibuf, sizeof( aindex ));
380    ibuf += sizeof( aindex );
381    aindex = ntohs( aindex );
382    if ( aindex ) { /* index 0 == index 1 */
383        --aindex;
384    }
385
386    memcpy( &bitmap, ibuf, sizeof( bitmap ));
387    bitmap = ntohs( bitmap );
388    ibuf += sizeof( bitmap );
389
390    if ( applopen( vol, creator, O_RDONLY, 0666 ) != AFP_OK ) {
391        *rbuflen = 0;
392        return( AFPERR_NOITEM );
393    }
394    if ( aindex < sa.sdt_index ) {
395        if ( lseek( sa.sdt_fd, 0L, SEEK_SET ) < 0 ) {
396            *rbuflen = 0;
397            return( AFPERR_PARAM );
398        }
399        sa.sdt_index = 0;
400    }
401
402    /* position to correct spot within appl file */
403    buf = obj->oldtmp;
404    while (( cc = read( sa.sdt_fd, buf, sizeof( appltag )
405                        + sizeof( u_short ))) > 0 ) {
406        p = buf + sizeof( appltag );
407        memcpy( &len, p, sizeof( len ));
408        len = ntohs( len );
409        p += sizeof( u_short );
410        if (( cc = read( sa.sdt_fd, p, len )) < len ) {
411            break;
412        }
413        if ( sa.sdt_index == aindex ) {
414            break;
415        }
416        sa.sdt_index++;
417    }
418    if ( cc <= 0 || sa.sdt_index != aindex ) {
419        *rbuflen = 0;
420        return( AFPERR_NOITEM );
421    }
422    sa.sdt_index++;
423
424#ifdef APPLCNAME
425    /*
426     * Check to see if this APPL mapping has an mpath or a upath.  If
427     * there are any ':'s in the name, it is a upath and must be converted
428     * to an mpath.  Hopefully, this code will go away.
429     */
430    {
431#define hextoint( c )	( isdigit( c ) ? c - '0' : c + 10 - 'a' )
432#define islxdigit(x)	(!isupper(x)&&isxdigit(x))
433
434        char	utomname[ MAXPATHLEN + 1];
435        char		*u, *m;
436        int		i, h;
437
438        u = p;
439        m = utomname;
440        i = len;
441        while ( i ) {
442            if ( *u == ':' && *(u+1) != '\0' && islxdigit( *(u+1)) &&
443                    *(u+2) != '\0' && islxdigit( *(u+2))) {
444                ++u, --i;
445                h = hextoint( *u ) << 4;
446                ++u, --i;
447                h |= hextoint( *u );
448                *m++ = h;
449            } else {
450                *m++ = *u;
451            }
452            ++u, --i;
453        }
454
455        len = m - utomname;
456        p = utomname;
457
458        if ( p[ len - 1 ] == '\0' ) {
459            len--;
460        }
461    }
462#endif /* APPLCNAME */
463
464    /* fake up a cname */
465    cbuf = obj->newtmp;
466    q = cbuf;
467    *q++ = 2;	/* long path type */
468    *q++ = (unsigned char)len;
469    memcpy( q, p, len );
470    q = cbuf;
471
472    if (( path = cname( vol, vol->v_root, &q )) == NULL ) {
473        *rbuflen = 0;
474        return( AFPERR_NOITEM );
475    }
476
477    if ( path_isadir(path) || path->st_errno ) {
478        *rbuflen = 0;
479        return( AFPERR_NOITEM );
480    }
481    buflen = *rbuflen - sizeof( bitmap ) - sizeof( appltag );
482    if ( getfilparams(vol, bitmap, path, curdir, rbuf + sizeof( bitmap ) +
483                      sizeof( appltag ), &buflen ) != AFP_OK ) {
484        *rbuflen = 0;
485        return( AFPERR_BITMAP );
486    }
487
488    *rbuflen = buflen + sizeof( bitmap ) + sizeof( appltag );
489    bitmap = htons( bitmap );
490    memcpy( rbuf, &bitmap, sizeof( bitmap ));
491    rbuf += sizeof( bitmap );
492    memcpy( rbuf, appltag, sizeof( appltag ));
493    rbuf += sizeof( appltag );
494    return( AFP_OK );
495}
496
497