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Revision 53 - (hide annotations) (download)
Thu Apr 28 22:21:10 2005 UTC (9 years, 7 months ago) by vapier
Original Path: trunk/ChangeLog
File size: 17298 byte(s)
fix cross-compiling and uclibc and all that jazz

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

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