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Revision 26 - (hide annotations) (download)
Mon Dec 6 21:42:51 2004 UTC (10 years ago) by ferringb
File size: 13459 byte(s)
hopefully cvs is done being stupid.  Compilation fixes, along w/ make dist fix.

1 ferringb 2 # ChangeLog for Path Sandbox
2     # Copyright 1999-2004 Gentoo Foundation; Distributed under the GPL v2
3     # $Header$
4    
5 ferringb 26 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
6     canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
7     having the hick-ups.
8    
9 ferringb 24 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
10     Makefile.am: Fixed compilation.
11    
12 ferringb 18 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
13     Gutted the bugger so it stops checking for a c++ and fortran compiler.
14     Do *not* regenerate aclocal.m4 for making a release until a better
15     solution is created.
16    
17 ferringb 16 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
18     Removal of more hardcoded paths.
19    
20 ferringb 13 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
21     sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
22    
23     19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
24 ferringb 6 Sandbox is now autotooled, create-localdecls needs to be killed and the code
25     shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
26     are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
27     To get to a point of testing, automake && autoconf; created requisite files w/
28     a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
29     /lib and /usr/lib/portage/bin.
30    
31 ferringb 2 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
32     closing out bug #70225, potential overflow of the sandbox_pids_file var.
33    
34     07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
35     (think it was at least) allows intermixing of code and data segments. bug #70351
36     should be fixed by this.
37    
38     03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
39     futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
40    
41     02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
42     Seth Robertson that tracked down all adjuct flags for read operations that
43     do not invoke a write operation.
44    
45     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
46     Another fix from jstubbs regarding a free() on a stack variable for the
47     environment -- tracking now prevents extraneous free()'s segfault.
48    
49     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
50     J. Stubbs tracked down a new bug where mkdir was failing to the patch on
51     the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
52     Also remove the errno = ESUCCESS settings as documentation points out that
53     a library isn't allowed to do that.
54    
55     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
56     file_security_check() function to check random potential exploits on files
57     that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
58     the 'system-crippling' exploits (bug 21923) and catches a few other
59     potential problems.
60    
61     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
62     32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
63    
64     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
65     bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
66     Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
67    
68     29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
69     Fix permissions and group of pids file and logs. Permissions should be 0664
70     and group should be 'portage'. Bug #34260.
71    
72     28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
73     Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
74     to the real execve (in our execve wrapper). Seems that on some arches (sparc
75     among others) do not allow us to tamper with the readonly copy passed to
76     execve, so pass our own copy of the environment. Bug #42290.
77    
78     11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
79     Changed tail to head and added a notice about duration of glibc check.
80    
81     21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
82     Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
83     as there isn't a guarentee that it is dynamic.
84    
85     02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
86     If 'file' passed to before_syscall(const char *func, const char *file) is
87     invalid, we should set errno to ENOENT, and not EINVAL. This should
88     close bug #32238.
89    
90     14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
91     Fix a bug that occurs mainly on 64bit arch, where the file passed to
92     the functions we wrap, is invalid, and then cause canonicalize to pass
93     garbage to before_syscall(), thanks to great detective work from
94     Andrea Luzzardi <al@sig11.org> (bug #29846).
95    
96     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
97     Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
98    
99     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
100     Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
101     only checked the destination patch, and not the source, so we could move
102     a protected file to a unprotected directory, and then delete/modify it.
103     Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
104    
105     12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
106     Added python2.3 to the predict section/variable.
107    
108     28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
109     sandbox.h, sandbox_futils.c :
110     Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
111     it is not set, it will revert to its old value.
112    
113     27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
114     Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
115     rather than failing with a violation, bug #29748.
116    
117     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
118     Fix canonicalize() to ignore calls with path = "".
119    
120     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
121     sandbox_futils.c, canonicalize.c :
122     Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
123     call handled strings larger than PATH_MAX (bug #21766). It however does not
124     work the same on 2.4 kernels.
125    
126     To fix, I added the posix implementation of getcwd() (from glibc cvs) that
127     do not need the system call. We use the default getcwd() function via a
128     wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
129     means the current directory was removed, OR that the the system call for
130     getcwd failed (curious is that it do not fail and return NULL or set
131     errno, but rather just truncate the retured directory - usually from the
132     start), and if so, we use the generic getcwd() function (__egetcwd). Note
133     that we do not use the generic version all the time, as it calls lstat()
134     a great number of times, and performance degrade much.
135    
136     29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
137     libsandbox.c :
138     Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
139    
140     22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
141     create-localdecls :
142     When checking path names of files accessed, we need to canonicalize it, else
143     it may be a symlink in a 'write allowed' directory pointing to a file in a
144     directory we should not have write access to.
145    
146     With something like coreutils-5.0, we have two problems:
147     1) One of the tests checks if getcwd() can return a path longer than
148     PATH_MAX. This test then tries to create a dir which even while
149     created local (mkdir("conftest2")), it ends up being resolved with
150     a name that is much larger than PATH_MAX. The problem now is that
151     canonicalize() have undefined behaviour when the path was too long
152     (returned wrongly truncated paths, etc), and pass the wrong path to
153     before_syscall() (causing the bogus sandbox violations).
154     2) The ecanonicalize() function we used, along with the canonicalize()
155     function did not support longer than PATH_MAX. This is partly a
156     cause for 1), but the error checking (rather lack of it) of calls
157     to erealpath() in canonicalize() was the prime reason for 1).
158    
159     As we do not use this canonicalized name to call the function, we resolve this
160     by fixing canonicalize() to do better error checking, and ecanonicalize() as
161     well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
162     While they will resolve paths properly now, and can check if a write/read is
163     allowed, the functions called from the sandboxed environment will still work
164     as expected.
165    
166     This should resolve bug #21766.
167    
168     06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
169     For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
170     it (bug #16298).
171    
172     Problem is that for some reason locale fopen's locale.alias with mode "rm".
173    
174     -------------------------------------------------------
175     nosferatu root # grep fopen locale.log
176     fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
177     nosferatu root #
178     --------------------------------------------------------
179    
180     I checked the source of locale, but it have fopen with mode 'r', so
181     not sure where the "rm" mode comes from. Anyhow, changed the check in
182     before_syscall_open_char() to also see mode "rm" as readonly.
183    
184     23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
185    
186     Add glibc-2.3 support.
187    
188     22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
189    
190     Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
191     operations releated to preload, as well as only try to modify ld.so.preload
192     if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
193     not using ld.so.preload. Fix to not write this instance of sandbox's pid
194     to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
195    
196     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
197    
198     Changed the LD to CC for hppa.
199    
200     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
201    
202     Killed the previous changes I made.
203    
204     17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
205    
206     Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
207    
208     09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
209    
210     Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
211    
212     16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
213    
214     Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
215     for this fix.
216    
217     4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
218    
219     sandbox_futils defined a dirname() function that was masking the same
220     function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
221     '/usr/lib/portage/bi/'). Fixed function to return expected results and
222     renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
223     11231.
224    
225     4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
226    
227     Fix a segfault in libsandbox.c if canonicalize() was called with
228     first parameter = NULL.
229    
230     1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
231    
232     Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
233     cleanup() for this.
234    
235     Change cleanup() in sandbox.c not to exit with fail status if
236     the pidsfile is missing. We really should still display sandbox
237     violations if they occured.
238    
239     31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
240    
241     Update cleanup() in sandbox.c to remove the PIDSFILE if this is
242     the last sandbox running.
243    
244     25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
245    
246     Major cleanups to mainly libsandbox.c again.
247    
248     22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
249    
250     Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
251     parties involved should please contact me so that we can fix it.
252    
253     Add opendir wrapper to libsandbox.c.
254    
255     21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
256    
257     Do some more cleanups to ecanonicalize(), as it dropped filenames in
258     rare cases (after my symlink cleanups), and caused glibc to bork.
259     These fixes went into canonicalize.c.
260    
261     20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
262    
263     Fix spawn_shell() and main() in sandbox.c to properly return fail
264     status.
265    
266     19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
267    
268     The new canonicalize() function in libsandbox.c also resolved symlinks,
269     which caused on cleaning sandbox errors if the symlink pointed to a
270     file in the live root. Ripped out canonicalize() and realpath() from
271     glibc; removed the symlink stuff, and changed them to ecanonicalize()
272     and erealpath().
273    
274     18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
275    
276     Ripped out all the wrappers, and implemented those of InstallWatch.
277     Losts of cleanups and bugfixes. Implement a execve that forces
278     $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
279     /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
280     sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
281     parts; it now have an install target.
282    
283     Reformat the whole thing to look somewhat like the reworked sandbox.c
284     and new sandbox.h and sandbox_futils.c from:
285    
286     Brad House <brad@mainstreetsoftworks.com>.
287    
288     Additional Copyrights now due to the InstallWatch code:
289    
290     Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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