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Revision 86 - (hide annotations) (download)
Wed May 11 15:42:45 2005 UTC (9 years, 3 months ago) by azarah
Original Path: trunk/ChangeLog
File size: 20144 byte(s)
Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.

1 ferringb 2 # ChangeLog for Path Sandbox
2 vapier 53 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 ferringb 2 # $Header$
4    
5 azarah 83 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
6 azarah 86 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
7    
8     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
9 azarah 84 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
10    
11     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
12 azarah 83 Remove ld.so.preload crap - we are not going to use it again.
13    
14 azarah 82 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
15     Fix typo in code that checks if we got valid group information, causing a
16     segmentation fault, bug #91637.
17    
18 azarah 79 * sandbox-1.2.6 (2005/05/10)
19    
20 azarah 78 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
21     Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
22     for some odd reason, bug #91541.
23    
24 azarah 77 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
25     Fix typo (sizeof -> strlen).
26    
27 ferringb 76 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
28     rewrote the sbcontext caching code so it accounts for env changes since lib
29     initialization.
30    
31 azarah 75 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
32     We create libctest.c via configure, so no need to keep it around. Do some
33     cleanup related to libctest.c and libctest during configure.
34    
35 azarah 74 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
36     Add rename support of symlinks pointing to protected files/directories.
37    
38 azarah 72 * sandbox-1.2.5 (2005/05/04)
39    
40 azarah 71 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
41     sandbox.bashrc:
42     Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
43     already set, init of the env vars fails for some reason, so do this later on,
44     and do not warn (bug #91431).
45    
46 azarah 70 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
47     sandbox.bashrc:
48     Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
49    
50 azarah 68 * sandbox-1.2.4 (2005/05/03)
51    
52 azarah 66 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
53     Do not init the env entries with each call, as it creates too many calls to
54 azarah 67 lstat, etc. Should speedup things a bit, bug #91040.
55 azarah 66
56 azarah 65 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
57     Add /dev/pty to default write list. Noticed by Morfic.
58    
59 vapier 62 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
60     sandbox.h:
61     uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
62     exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
63    
64 azarah 59 * sandbox-1.2.3 (2005/04/29)
65    
66 azarah 56 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
67     Do not check for (*&#$(* CXX or F77.
68    
69 azarah 54 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
70     Do not append '/' to pathname in filter_path() if it already ends with it.
71    
72 vapier 53 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
73     With az's help, clean up autotools to work with cross-compiling.
74    
75 azarah 59 * sandbox-1.2.2 (2005/04/28)
76 azarah 48
77 azarah 47 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
78     Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
79     have issues; bug #90592.
80    
81 azarah 59 * sandbox-1.2.1 (2005/04/23)
82 azarah 44
83 azarah 43 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
84     getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
85     Make sure all functions used in libsandbox.c is declared static. Define
86     SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
87     linking with its object. Hopefully this will fix bug #90153.
88    
89 azarah 59 * sandbox-1.2 (2005/04/23)
90 azarah 46
91 azarah 40 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
92     Allow lchown a symlink in write-allowed path pointing to write-denied
93     target.
94    
95 genone 39 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
96     Also show resolved symlink names in the log.
97    
98 azarah 37 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
99     Seems -nostdlib was the problem with the constructor/destructor - remove it
100     from Makefile.am, and change the constructor/destructor names again.
101    
102 azarah 36 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
103     Also rename the _init() and _fini() declarations.
104    
105 azarah 35 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
106     Fixup the constructor/destructor function names again (they should be _init()
107     and _fini() it seems, and not being called caused sandbox_lib_path to be
108     unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
109     Add both the path in given SANDBOX_x variable, as well as its symlink
110     resolved path in init_env_entries(). Modify filter_path() to be able to
111     resolve paths without resolving symlinks, as well as to be able to resolve
112     symlinks. Fix a possible segfault in check_access(). Add symlink resolving
113     to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
114     for bug #31019 cause access violations if we try to remove a symlink that is
115     not in protected path, but points to a protected path. Fix a memory leak in
116     sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
117     (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
118     (pid_string was uninitialized). General syntax cleanups.
119    
120 ferringb 34 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
121     infamous "pids file is not a regular file" w/out newline bug.
122    
123 ferringb 33 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
124     Correct libc_version path detection, since it was screwing up if libdir !=
125     "/lib/".
126    
127     02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
128 azarah 32 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
129    
130 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
131 azarah 31 Fix symbols.in not added to dist.
132    
133 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
134 azarah 30 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
135     White space fixes.
136    
137 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
138 azarah 30 configure.in, getcwd.c, libsandbox.c, symbols.in:
139 azarah 29 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
140     getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
141     for glibc and other libc's that use this. Update libsandbox.c to use these
142     symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
143     process unset it.
144    
145 ferringb 33 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
146 ferringb 28 killed off _init and _fini in favor of
147     void __attribute__ ((constructor)) init_func and
148     void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
149    
150 ferringb 26 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
151     canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
152     having the hick-ups.
153    
154 ferringb 24 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
155     Makefile.am: Fixed compilation.
156    
157 ferringb 18 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
158     Gutted the bugger so it stops checking for a c++ and fortran compiler.
159     Do *not* regenerate aclocal.m4 for making a release until a better
160     solution is created.
161    
162 ferringb 16 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
163     Removal of more hardcoded paths.
164    
165 ferringb 13 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
166     sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
167    
168     19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
169 ferringb 6 Sandbox is now autotooled, create-localdecls needs to be killed and the code
170     shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
171     are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
172     To get to a point of testing, automake && autoconf; created requisite files w/
173     a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
174     /lib and /usr/lib/portage/bin.
175    
176 ferringb 2 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
177     closing out bug #70225, potential overflow of the sandbox_pids_file var.
178    
179     07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
180     (think it was at least) allows intermixing of code and data segments. bug #70351
181     should be fixed by this.
182    
183     03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
184     futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
185    
186     02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
187     Seth Robertson that tracked down all adjuct flags for read operations that
188     do not invoke a write operation.
189    
190     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
191     Another fix from jstubbs regarding a free() on a stack variable for the
192     environment -- tracking now prevents extraneous free()'s segfault.
193    
194     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
195     J. Stubbs tracked down a new bug where mkdir was failing to the patch on
196     the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
197     Also remove the errno = ESUCCESS settings as documentation points out that
198     a library isn't allowed to do that.
199    
200     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
201     file_security_check() function to check random potential exploits on files
202     that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
203     the 'system-crippling' exploits (bug 21923) and catches a few other
204     potential problems.
205    
206     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
207     32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
208    
209     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
210     bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
211     Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
212    
213     29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
214     Fix permissions and group of pids file and logs. Permissions should be 0664
215     and group should be 'portage'. Bug #34260.
216    
217     28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
218     Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
219     to the real execve (in our execve wrapper). Seems that on some arches (sparc
220     among others) do not allow us to tamper with the readonly copy passed to
221     execve, so pass our own copy of the environment. Bug #42290.
222    
223     11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
224     Changed tail to head and added a notice about duration of glibc check.
225    
226     21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
227     Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
228     as there isn't a guarentee that it is dynamic.
229    
230     02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
231     If 'file' passed to before_syscall(const char *func, const char *file) is
232     invalid, we should set errno to ENOENT, and not EINVAL. This should
233     close bug #32238.
234    
235     14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
236     Fix a bug that occurs mainly on 64bit arch, where the file passed to
237     the functions we wrap, is invalid, and then cause canonicalize to pass
238     garbage to before_syscall(), thanks to great detective work from
239     Andrea Luzzardi <al@sig11.org> (bug #29846).
240    
241     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
242     Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
243    
244     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
245     Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
246     only checked the destination patch, and not the source, so we could move
247     a protected file to a unprotected directory, and then delete/modify it.
248     Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
249    
250     12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
251     Added python2.3 to the predict section/variable.
252    
253     28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
254     sandbox.h, sandbox_futils.c :
255     Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
256     it is not set, it will revert to its old value.
257    
258     27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
259     Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
260     rather than failing with a violation, bug #29748.
261    
262     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
263     Fix canonicalize() to ignore calls with path = "".
264    
265     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
266     sandbox_futils.c, canonicalize.c :
267     Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
268     call handled strings larger than PATH_MAX (bug #21766). It however does not
269     work the same on 2.4 kernels.
270    
271     To fix, I added the posix implementation of getcwd() (from glibc cvs) that
272     do not need the system call. We use the default getcwd() function via a
273     wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
274     means the current directory was removed, OR that the the system call for
275     getcwd failed (curious is that it do not fail and return NULL or set
276     errno, but rather just truncate the retured directory - usually from the
277     start), and if so, we use the generic getcwd() function (__egetcwd). Note
278     that we do not use the generic version all the time, as it calls lstat()
279     a great number of times, and performance degrade much.
280    
281     29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
282     libsandbox.c :
283     Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
284    
285     22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
286     create-localdecls :
287     When checking path names of files accessed, we need to canonicalize it, else
288     it may be a symlink in a 'write allowed' directory pointing to a file in a
289     directory we should not have write access to.
290    
291     With something like coreutils-5.0, we have two problems:
292     1) One of the tests checks if getcwd() can return a path longer than
293     PATH_MAX. This test then tries to create a dir which even while
294     created local (mkdir("conftest2")), it ends up being resolved with
295     a name that is much larger than PATH_MAX. The problem now is that
296     canonicalize() have undefined behaviour when the path was too long
297     (returned wrongly truncated paths, etc), and pass the wrong path to
298     before_syscall() (causing the bogus sandbox violations).
299     2) The ecanonicalize() function we used, along with the canonicalize()
300     function did not support longer than PATH_MAX. This is partly a
301     cause for 1), but the error checking (rather lack of it) of calls
302     to erealpath() in canonicalize() was the prime reason for 1).
303    
304     As we do not use this canonicalized name to call the function, we resolve this
305     by fixing canonicalize() to do better error checking, and ecanonicalize() as
306     well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
307     While they will resolve paths properly now, and can check if a write/read is
308     allowed, the functions called from the sandboxed environment will still work
309     as expected.
310    
311     This should resolve bug #21766.
312    
313     06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
314     For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
315     it (bug #16298).
316    
317     Problem is that for some reason locale fopen's locale.alias with mode "rm".
318    
319     -------------------------------------------------------
320     nosferatu root # grep fopen locale.log
321     fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
322     nosferatu root #
323     --------------------------------------------------------
324    
325     I checked the source of locale, but it have fopen with mode 'r', so
326     not sure where the "rm" mode comes from. Anyhow, changed the check in
327     before_syscall_open_char() to also see mode "rm" as readonly.
328    
329     23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
330    
331     Add glibc-2.3 support.
332    
333     22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
334    
335     Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
336     operations releated to preload, as well as only try to modify ld.so.preload
337     if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
338     not using ld.so.preload. Fix to not write this instance of sandbox's pid
339     to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
340    
341     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
342    
343     Changed the LD to CC for hppa.
344    
345     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
346    
347     Killed the previous changes I made.
348    
349     17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
350    
351     Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
352    
353     09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
354    
355     Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
356    
357     16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
358    
359     Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
360     for this fix.
361    
362     4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
363    
364     sandbox_futils defined a dirname() function that was masking the same
365     function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
366     '/usr/lib/portage/bi/'). Fixed function to return expected results and
367     renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
368     11231.
369    
370     4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
371    
372     Fix a segfault in libsandbox.c if canonicalize() was called with
373     first parameter = NULL.
374    
375     1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
376    
377     Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
378     cleanup() for this.
379    
380     Change cleanup() in sandbox.c not to exit with fail status if
381     the pidsfile is missing. We really should still display sandbox
382     violations if they occured.
383    
384     31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
385    
386     Update cleanup() in sandbox.c to remove the PIDSFILE if this is
387     the last sandbox running.
388    
389     25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
390    
391     Major cleanups to mainly libsandbox.c again.
392    
393     22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
394    
395     Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
396     parties involved should please contact me so that we can fix it.
397    
398     Add opendir wrapper to libsandbox.c.
399    
400     21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
401    
402     Do some more cleanups to ecanonicalize(), as it dropped filenames in
403     rare cases (after my symlink cleanups), and caused glibc to bork.
404     These fixes went into canonicalize.c.
405    
406     20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
407    
408     Fix spawn_shell() and main() in sandbox.c to properly return fail
409     status.
410    
411     19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
412    
413     The new canonicalize() function in libsandbox.c also resolved symlinks,
414     which caused on cleaning sandbox errors if the symlink pointed to a
415     file in the live root. Ripped out canonicalize() and realpath() from
416     glibc; removed the symlink stuff, and changed them to ecanonicalize()
417     and erealpath().
418    
419     18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
420    
421     Ripped out all the wrappers, and implemented those of InstallWatch.
422     Losts of cleanups and bugfixes. Implement a execve that forces
423     $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
424     /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
425     sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
426     parts; it now have an install target.
427    
428     Reformat the whole thing to look somewhat like the reworked sandbox.c
429     and new sandbox.h and sandbox_futils.c from:
430    
431     Brad House <brad@mainstreetsoftworks.com>.
432    
433     Additional Copyrights now due to the InstallWatch code:
434    
435     Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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