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Wed Mar 2 09:04:45 2005 UTC (9 years, 7 months ago) by azarah
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White space fixes.

1 # ChangeLog for Path Sandbox
2 # Copyright 1999-2004 Gentoo Foundation; Distributed under the GPL v2
3 # $Header$
4
5 02 May 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
6 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
7 White space fixes.
8
9 02 May 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
10 configure.in, getcwd.c, libsandbox.c, symbols.in:
11 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
12 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
13 for glibc and other libc's that use this. Update libsandbox.c to use these
14 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
15 process unset it.
16
17 01 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
18 killed off _init and _fini in favor of
19 void __attribute__ ((constructor)) init_func and
20 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
21
22 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
23 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
24 having the hick-ups.
25
26 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
27 Makefile.am: Fixed compilation.
28
29 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
30 Gutted the bugger so it stops checking for a c++ and fortran compiler.
31 Do *not* regenerate aclocal.m4 for making a release until a better
32 solution is created.
33
34 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
35 Removal of more hardcoded paths.
36
37 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
38 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
39
40 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
41 Sandbox is now autotooled, create-localdecls needs to be killed and the code
42 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
43 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
44 To get to a point of testing, automake && autoconf; created requisite files w/
45 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
46 /lib and /usr/lib/portage/bin.
47
48 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
49 closing out bug #70225, potential overflow of the sandbox_pids_file var.
50
51 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
52 (think it was at least) allows intermixing of code and data segments. bug #70351
53 should be fixed by this.
54
55 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
56 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
57
58 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
59 Seth Robertson that tracked down all adjuct flags for read operations that
60 do not invoke a write operation.
61
62 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
63 Another fix from jstubbs regarding a free() on a stack variable for the
64 environment -- tracking now prevents extraneous free()'s segfault.
65
66 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
67 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
68 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
69 Also remove the errno = ESUCCESS settings as documentation points out that
70 a library isn't allowed to do that.
71
72 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
73 file_security_check() function to check random potential exploits on files
74 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
75 the 'system-crippling' exploits (bug 21923) and catches a few other
76 potential problems.
77
78 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
79 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
80
81 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
82 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
83 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
84
85 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
86 Fix permissions and group of pids file and logs. Permissions should be 0664
87 and group should be 'portage'. Bug #34260.
88
89 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
90 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
91 to the real execve (in our execve wrapper). Seems that on some arches (sparc
92 among others) do not allow us to tamper with the readonly copy passed to
93 execve, so pass our own copy of the environment. Bug #42290.
94
95 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
96 Changed tail to head and added a notice about duration of glibc check.
97
98 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
99 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
100 as there isn't a guarentee that it is dynamic.
101
102 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
103 If 'file' passed to before_syscall(const char *func, const char *file) is
104 invalid, we should set errno to ENOENT, and not EINVAL. This should
105 close bug #32238.
106
107 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
108 Fix a bug that occurs mainly on 64bit arch, where the file passed to
109 the functions we wrap, is invalid, and then cause canonicalize to pass
110 garbage to before_syscall(), thanks to great detective work from
111 Andrea Luzzardi <al@sig11.org> (bug #29846).
112
113 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
114 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
115
116 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
117 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
118 only checked the destination patch, and not the source, so we could move
119 a protected file to a unprotected directory, and then delete/modify it.
120 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
121
122 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
123 Added python2.3 to the predict section/variable.
124
125 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
126 sandbox.h, sandbox_futils.c :
127 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
128 it is not set, it will revert to its old value.
129
130 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
131 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
132 rather than failing with a violation, bug #29748.
133
134 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
135 Fix canonicalize() to ignore calls with path = "".
136
137 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
138 sandbox_futils.c, canonicalize.c :
139 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
140 call handled strings larger than PATH_MAX (bug #21766). It however does not
141 work the same on 2.4 kernels.
142
143 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
144 do not need the system call. We use the default getcwd() function via a
145 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
146 means the current directory was removed, OR that the the system call for
147 getcwd failed (curious is that it do not fail and return NULL or set
148 errno, but rather just truncate the retured directory - usually from the
149 start), and if so, we use the generic getcwd() function (__egetcwd). Note
150 that we do not use the generic version all the time, as it calls lstat()
151 a great number of times, and performance degrade much.
152
153 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
154 libsandbox.c :
155 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
156
157 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
158 create-localdecls :
159 When checking path names of files accessed, we need to canonicalize it, else
160 it may be a symlink in a 'write allowed' directory pointing to a file in a
161 directory we should not have write access to.
162
163 With something like coreutils-5.0, we have two problems:
164 1) One of the tests checks if getcwd() can return a path longer than
165 PATH_MAX. This test then tries to create a dir which even while
166 created local (mkdir("conftest2")), it ends up being resolved with
167 a name that is much larger than PATH_MAX. The problem now is that
168 canonicalize() have undefined behaviour when the path was too long
169 (returned wrongly truncated paths, etc), and pass the wrong path to
170 before_syscall() (causing the bogus sandbox violations).
171 2) The ecanonicalize() function we used, along with the canonicalize()
172 function did not support longer than PATH_MAX. This is partly a
173 cause for 1), but the error checking (rather lack of it) of calls
174 to erealpath() in canonicalize() was the prime reason for 1).
175
176 As we do not use this canonicalized name to call the function, we resolve this
177 by fixing canonicalize() to do better error checking, and ecanonicalize() as
178 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
179 While they will resolve paths properly now, and can check if a write/read is
180 allowed, the functions called from the sandboxed environment will still work
181 as expected.
182
183 This should resolve bug #21766.
184
185 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
186 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
187 it (bug #16298).
188
189 Problem is that for some reason locale fopen's locale.alias with mode "rm".
190
191 -------------------------------------------------------
192 nosferatu root # grep fopen locale.log
193 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
194 nosferatu root #
195 --------------------------------------------------------
196
197 I checked the source of locale, but it have fopen with mode 'r', so
198 not sure where the "rm" mode comes from. Anyhow, changed the check in
199 before_syscall_open_char() to also see mode "rm" as readonly.
200
201 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
202
203 Add glibc-2.3 support.
204
205 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
206
207 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
208 operations releated to preload, as well as only try to modify ld.so.preload
209 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
210 not using ld.so.preload. Fix to not write this instance of sandbox's pid
211 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
212
213 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
214
215 Changed the LD to CC for hppa.
216
217 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
218
219 Killed the previous changes I made.
220
221 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
222
223 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
224
225 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
226
227 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
228
229 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
230
231 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
232 for this fix.
233
234 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
235
236 sandbox_futils defined a dirname() function that was masking the same
237 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
238 '/usr/lib/portage/bi/'). Fixed function to return expected results and
239 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
240 11231.
241
242 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
243
244 Fix a segfault in libsandbox.c if canonicalize() was called with
245 first parameter = NULL.
246
247 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
248
249 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
250 cleanup() for this.
251
252 Change cleanup() in sandbox.c not to exit with fail status if
253 the pidsfile is missing. We really should still display sandbox
254 violations if they occured.
255
256 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
257
258 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
259 the last sandbox running.
260
261 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
262
263 Major cleanups to mainly libsandbox.c again.
264
265 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
266
267 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
268 parties involved should please contact me so that we can fix it.
269
270 Add opendir wrapper to libsandbox.c.
271
272 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
273
274 Do some more cleanups to ecanonicalize(), as it dropped filenames in
275 rare cases (after my symlink cleanups), and caused glibc to bork.
276 These fixes went into canonicalize.c.
277
278 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
279
280 Fix spawn_shell() and main() in sandbox.c to properly return fail
281 status.
282
283 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
284
285 The new canonicalize() function in libsandbox.c also resolved symlinks,
286 which caused on cleaning sandbox errors if the symlink pointed to a
287 file in the live root. Ripped out canonicalize() and realpath() from
288 glibc; removed the symlink stuff, and changed them to ecanonicalize()
289 and erealpath().
290
291 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
292
293 Ripped out all the wrappers, and implemented those of InstallWatch.
294 Losts of cleanups and bugfixes. Implement a execve that forces
295 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
296 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
297 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
298 parts; it now have an install target.
299
300 Reformat the whole thing to look somewhat like the reworked sandbox.c
301 and new sandbox.h and sandbox_futils.c from:
302
303 Brad House <brad@mainstreetsoftworks.com>.
304
305 Additional Copyrights now due to the InstallWatch code:
306
307 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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