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Revision 149 - (show annotations) (download)
Thu Jul 14 11:08:27 2005 UTC (9 years, 4 months ago) by azarah
File size: 27141 byte(s)
Release sandbox-1.2.11.
1 # ChangeLog for Path Sandbox
2 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 # $Header$
4
5 * sandbox-1.2.11 (2005/07/14)
6
7 14 July 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
8 Fix getcwd, bug #98419.
9
10 08 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c,
11 libsandbox.c:
12 - Try to cleanup and make error handling/printing consistent.
13 - Remove old logs if present and conflicting with current.
14 - Fix compile error with previous change, and return rather then exit().
15
16 07 July 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
17 sandbox.h, sandbox_futils.c:
18 - Fix possible segfault in env init code.
19 - Major cleanup of sandbox_futils.c. Removed most of the functions as we now
20 write to /var/log/sandbox/, so in theory do not need all that.
21 - Redo the interface of the get_* functions so that we do not leak memory.
22 - Remove sandbox_dir and co - we are not using it anymore.
23 - Remove unused includes and variables.
24 - Only declare functions in sandbox_futils.c that are used in libsandbox.c when
25 OUTSIDE_LIBSANDBOX is not defined.
26 - Cleanup access/log printing. Make access printing honour NOCOLOR. Fix log
27 printing's last line not honouring NOCOLOR.
28
29 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
30 libsandbox.c:
31 - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
32 write to it.
33 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
34 - Add check_prefixes() with major cleanup on check_access().
35 - Cleanup init_env_entries() and check_prefixes().
36
37 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
38 sandbox_futils.c, libsandbox.c:
39 Remove unused 'pids file' code.
40
41 * sandbox-1.2.10 (2005/07/03)
42
43 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
44 Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
45
46 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
47 General cleanups:
48 - Remove fooling around with exit codes - we error out on presence of a log
49 anyhow.
50 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
51 appropriate there.
52
53 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
54 Cleanup the fail_nametoolong stuff a bit more.
55
56 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
57 Remove hopefully the last ld.so.preload bits we do not use anymore.
58
59 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
60 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
61 in check_syscall(). Should speed things up a bit (at least for the getcwd()
62 and long path name test it goes down to under a second, and not 10+ seconds
63 like before). Also warn if we skip checking due to the canonicalized path
64 being too long.
65
66 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
67 More comment/readability cleanups.
68
69 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
70 sandbox_futils.c, libsandbox.c:
71 Some strncpy/strncat and other cleanups.
72
73 * sandbox-1.2.9 (2005/06/09)
74
75 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
76 Move symlink hack down a bit to try and minimize on the amount of lstat()
77 calls we do.
78
79 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
80 Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
81
82 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
83 Add wrapper for access() function, bug #85413.
84
85 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
86 Use generic getcwd() implementation from uclibc - should be more portable
87 and looks a bit cleaner.
88
89 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
90 Make sure our true_* pointers are initialized to NULL, and that we check for
91 all references that they are valid.
92
93 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
94 Be default we will fail if the path name we try to canonicalize is too long.
95 This however could cause issues with some things (bug #94630 and #21766), so
96 if fail_nametoolong == 0, canonicalize() will return a null length string and
97 do not fail.
98
99 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
100 Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
101 make sure we re-export the new TMPDIR environment variable.
102
103 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
104 Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
105 by Marcus D. Hanwell <cryos@gentoo.org>.
106
107 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
108 Add /dev/console to write list, bug #38588.
109
110 * sandbox-1.2.8 (2005/05/13)
111
112 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
113 sandbox.h, sandbox_futils.c:
114 General cleanups.
115
116 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
117 sandbox.h:
118 Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
119
120 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
121 sandbox.h, sandbox_futils.c:
122 Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
123 to use TMPDIR if present in environment.
124
125 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
126 Remove sandbox_log_file from main() as its no longer used.
127
128 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
129 sandbox_futils.c:
130 Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
131 if already exported when sandbox started). Fix get_sandbox_log() and new
132 get_sandbox_debug_log() to not use already exported environment variables if
133 they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
134 SB_PATH_MAX fixes.
135
136 * sandbox-1.2.7 (2005/05/12)
137
138 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
139 sandbox_futils.c:
140 More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
141
142 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
143 Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
144 with '(null)' in it if we did not call sandbox with absolute path.
145
146 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
147 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
148 for the child.
149
150 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
151 Remove global preload_adaptable as it is no longer used.
152
153 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
154 Rewrite environment stuff to only be set when execve'ing the child process
155 to try and avoid issues like bug #91541 that causes sandbox to crash if
156 we set LD_PRELOAD sandbox side already.
157
158 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
159 Move print_sandbox_log() up to make things neater.
160
161 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
162 Remove load_preload_libs(), as its not used anymore.
163
164 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
165 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
166
167 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
168 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
169
170 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
171 Remove ld.so.preload crap - we are not going to use it again.
172
173 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
174 Fix typo in code that checks if we got valid group information, causing a
175 segmentation fault, bug #91637.
176
177 * sandbox-1.2.6 (2005/05/10)
178
179 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
180 Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
181 for some odd reason, bug #91541.
182
183 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
184 Fix typo (sizeof -> strlen).
185
186 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
187 rewrote the sbcontext caching code so it accounts for env changes since lib
188 initialization.
189
190 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
191 We create libctest.c via configure, so no need to keep it around. Do some
192 cleanup related to libctest.c and libctest during configure.
193
194 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
195 Add rename support of symlinks pointing to protected files/directories.
196
197 * sandbox-1.2.5 (2005/05/04)
198
199 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
200 sandbox.bashrc:
201 Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
202 already set, init of the env vars fails for some reason, so do this later on,
203 and do not warn (bug #91431).
204
205 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
206 sandbox.bashrc:
207 Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
208
209 * sandbox-1.2.4 (2005/05/03)
210
211 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
212 Do not init the env entries with each call, as it creates too many calls to
213 lstat, etc. Should speedup things a bit, bug #91040.
214
215 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
216 Add /dev/pty to default write list. Noticed by Morfic.
217
218 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
219 sandbox.h:
220 uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
221 exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
222
223 * sandbox-1.2.3 (2005/04/29)
224
225 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
226 Do not check for (*&#$(* CXX or F77.
227
228 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
229 Do not append '/' to pathname in filter_path() if it already ends with it.
230
231 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
232 With az's help, clean up autotools to work with cross-compiling.
233
234 * sandbox-1.2.2 (2005/04/28)
235
236 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
237 Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
238 have issues; bug #90592.
239
240 * sandbox-1.2.1 (2005/04/23)
241
242 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
243 getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
244 Make sure all functions used in libsandbox.c is declared static. Define
245 SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
246 linking with its object. Hopefully this will fix bug #90153.
247
248 * sandbox-1.2 (2005/04/23)
249
250 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
251 Allow lchown a symlink in write-allowed path pointing to write-denied
252 target.
253
254 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
255 Also show resolved symlink names in the log.
256
257 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
258 Seems -nostdlib was the problem with the constructor/destructor - remove it
259 from Makefile.am, and change the constructor/destructor names again.
260
261 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
262 Also rename the _init() and _fini() declarations.
263
264 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
265 Fixup the constructor/destructor function names again (they should be _init()
266 and _fini() it seems, and not being called caused sandbox_lib_path to be
267 unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
268 Add both the path in given SANDBOX_x variable, as well as its symlink
269 resolved path in init_env_entries(). Modify filter_path() to be able to
270 resolve paths without resolving symlinks, as well as to be able to resolve
271 symlinks. Fix a possible segfault in check_access(). Add symlink resolving
272 to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
273 for bug #31019 cause access violations if we try to remove a symlink that is
274 not in protected path, but points to a protected path. Fix a memory leak in
275 sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
276 (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
277 (pid_string was uninitialized). General syntax cleanups.
278
279 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
280 infamous "pids file is not a regular file" w/out newline bug.
281
282 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
283 Correct libc_version path detection, since it was screwing up if libdir !=
284 "/lib/".
285
286 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
287 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
288
289 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
290 Fix symbols.in not added to dist.
291
292 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
293 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
294 White space fixes.
295
296 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
297 configure.in, getcwd.c, libsandbox.c, symbols.in:
298 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
299 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
300 for glibc and other libc's that use this. Update libsandbox.c to use these
301 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
302 process unset it.
303
304 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
305 killed off _init and _fini in favor of
306 void __attribute__ ((constructor)) init_func and
307 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
308
309 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
310 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
311 having the hick-ups.
312
313 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
314 Makefile.am: Fixed compilation.
315
316 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
317 Gutted the bugger so it stops checking for a c++ and fortran compiler.
318 Do *not* regenerate aclocal.m4 for making a release until a better
319 solution is created.
320
321 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
322 Removal of more hardcoded paths.
323
324 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
325 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
326
327 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
328 Sandbox is now autotooled, create-localdecls needs to be killed and the code
329 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
330 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
331 To get to a point of testing, automake && autoconf; created requisite files w/
332 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
333 /lib and /usr/lib/portage/bin.
334
335 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
336 closing out bug #70225, potential overflow of the sandbox_pids_file var.
337
338 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
339 (think it was at least) allows intermixing of code and data segments. bug #70351
340 should be fixed by this.
341
342 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
343 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
344
345 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
346 Seth Robertson that tracked down all adjuct flags for read operations that
347 do not invoke a write operation.
348
349 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
350 Another fix from jstubbs regarding a free() on a stack variable for the
351 environment -- tracking now prevents extraneous free()'s segfault.
352
353 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
354 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
355 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
356 Also remove the errno = ESUCCESS settings as documentation points out that
357 a library isn't allowed to do that.
358
359 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
360 file_security_check() function to check random potential exploits on files
361 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
362 the 'system-crippling' exploits (bug 21923) and catches a few other
363 potential problems.
364
365 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
366 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
367
368 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
369 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
370 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
371
372 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
373 Fix permissions and group of pids file and logs. Permissions should be 0664
374 and group should be 'portage'. Bug #34260.
375
376 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
377 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
378 to the real execve (in our execve wrapper). Seems that on some arches (sparc
379 among others) do not allow us to tamper with the readonly copy passed to
380 execve, so pass our own copy of the environment. Bug #42290.
381
382 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
383 Changed tail to head and added a notice about duration of glibc check.
384
385 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
386 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
387 as there isn't a guarentee that it is dynamic.
388
389 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
390 If 'file' passed to before_syscall(const char *func, const char *file) is
391 invalid, we should set errno to ENOENT, and not EINVAL. This should
392 close bug #32238.
393
394 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
395 Fix a bug that occurs mainly on 64bit arch, where the file passed to
396 the functions we wrap, is invalid, and then cause canonicalize to pass
397 garbage to before_syscall(), thanks to great detective work from
398 Andrea Luzzardi <al@sig11.org> (bug #29846).
399
400 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
401 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
402
403 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
404 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
405 only checked the destination patch, and not the source, so we could move
406 a protected file to a unprotected directory, and then delete/modify it.
407 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
408
409 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
410 Added python2.3 to the predict section/variable.
411
412 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
413 sandbox.h, sandbox_futils.c :
414 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
415 it is not set, it will revert to its old value.
416
417 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
418 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
419 rather than failing with a violation, bug #29748.
420
421 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
422 Fix canonicalize() to ignore calls with path = "".
423
424 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
425 sandbox_futils.c, canonicalize.c :
426 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
427 call handled strings larger than PATH_MAX (bug #21766). It however does not
428 work the same on 2.4 kernels.
429
430 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
431 do not need the system call. We use the default getcwd() function via a
432 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
433 means the current directory was removed, OR that the the system call for
434 getcwd failed (curious is that it do not fail and return NULL or set
435 errno, but rather just truncate the retured directory - usually from the
436 start), and if so, we use the generic getcwd() function (__egetcwd). Note
437 that we do not use the generic version all the time, as it calls lstat()
438 a great number of times, and performance degrade much.
439
440 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
441 libsandbox.c :
442 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
443
444 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
445 create-localdecls :
446 When checking path names of files accessed, we need to canonicalize it, else
447 it may be a symlink in a 'write allowed' directory pointing to a file in a
448 directory we should not have write access to.
449
450 With something like coreutils-5.0, we have two problems:
451 1) One of the tests checks if getcwd() can return a path longer than
452 PATH_MAX. This test then tries to create a dir which even while
453 created local (mkdir("conftest2")), it ends up being resolved with
454 a name that is much larger than PATH_MAX. The problem now is that
455 canonicalize() have undefined behaviour when the path was too long
456 (returned wrongly truncated paths, etc), and pass the wrong path to
457 before_syscall() (causing the bogus sandbox violations).
458 2) The ecanonicalize() function we used, along with the canonicalize()
459 function did not support longer than PATH_MAX. This is partly a
460 cause for 1), but the error checking (rather lack of it) of calls
461 to erealpath() in canonicalize() was the prime reason for 1).
462
463 As we do not use this canonicalized name to call the function, we resolve this
464 by fixing canonicalize() to do better error checking, and ecanonicalize() as
465 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
466 While they will resolve paths properly now, and can check if a write/read is
467 allowed, the functions called from the sandboxed environment will still work
468 as expected.
469
470 This should resolve bug #21766.
471
472 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
473 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
474 it (bug #16298).
475
476 Problem is that for some reason locale fopen's locale.alias with mode "rm".
477
478 -------------------------------------------------------
479 nosferatu root # grep fopen locale.log
480 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
481 nosferatu root #
482 --------------------------------------------------------
483
484 I checked the source of locale, but it have fopen with mode 'r', so
485 not sure where the "rm" mode comes from. Anyhow, changed the check in
486 before_syscall_open_char() to also see mode "rm" as readonly.
487
488 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
489
490 Add glibc-2.3 support.
491
492 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
493
494 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
495 operations releated to preload, as well as only try to modify ld.so.preload
496 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
497 not using ld.so.preload. Fix to not write this instance of sandbox's pid
498 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
499
500 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
501
502 Changed the LD to CC for hppa.
503
504 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
505
506 Killed the previous changes I made.
507
508 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
509
510 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
511
512 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
513
514 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
515
516 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
517
518 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
519 for this fix.
520
521 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
522
523 sandbox_futils defined a dirname() function that was masking the same
524 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
525 '/usr/lib/portage/bi/'). Fixed function to return expected results and
526 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
527 11231.
528
529 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
530
531 Fix a segfault in libsandbox.c if canonicalize() was called with
532 first parameter = NULL.
533
534 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
535
536 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
537 cleanup() for this.
538
539 Change cleanup() in sandbox.c not to exit with fail status if
540 the pidsfile is missing. We really should still display sandbox
541 violations if they occured.
542
543 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
544
545 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
546 the last sandbox running.
547
548 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
549
550 Major cleanups to mainly libsandbox.c again.
551
552 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
553
554 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
555 parties involved should please contact me so that we can fix it.
556
557 Add opendir wrapper to libsandbox.c.
558
559 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
560
561 Do some more cleanups to ecanonicalize(), as it dropped filenames in
562 rare cases (after my symlink cleanups), and caused glibc to bork.
563 These fixes went into canonicalize.c.
564
565 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
566
567 Fix spawn_shell() and main() in sandbox.c to properly return fail
568 status.
569
570 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
571
572 The new canonicalize() function in libsandbox.c also resolved symlinks,
573 which caused on cleaning sandbox errors if the symlink pointed to a
574 file in the live root. Ripped out canonicalize() and realpath() from
575 glibc; removed the symlink stuff, and changed them to ecanonicalize()
576 and erealpath().
577
578 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
579
580 Ripped out all the wrappers, and implemented those of InstallWatch.
581 Losts of cleanups and bugfixes. Implement a execve that forces
582 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
583 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
584 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
585 parts; it now have an install target.
586
587 Reformat the whole thing to look somewhat like the reworked sandbox.c
588 and new sandbox.h and sandbox_futils.c from:
589
590 Brad House <brad@mainstreetsoftworks.com>.
591
592 Additional Copyrights now due to the InstallWatch code:
593
594 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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