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Fri Aug 5 13:33:54 2005 UTC (8 years, 8 months ago) by azarah
Original Path: trunk/ChangeLog
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Do not give an access violation if the access() system call do not have
write/read access - it does not actually modify, so we only need to return
not being able to write/read.  Noted by Andres Loeh <kosmikus@gentoo.org>,
bug #101433.

1 # ChangeLog for Path Sandbox
2 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 # $Header$
4
5 05 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
6
7 Do not give an access violation if the access() system call do not have
8 write/read access - it does not actually modify, so we only need to return
9 not being able to write/read. Noted by Andres Loeh <kosmikus@gentoo.org>,
10 bug #101433.
11
12 01 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
13
14 Still do normal log if debugging is requested.
15
16 Add support for SANDBOX_VERBOSE (enabled by default). Adjust SANDBOX_DEBUG
17 to only enable if equal to "1" or "yes".
18
19 Add /dev/tts to write permit, bug #42809.
20
21 27 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
22 sandbox_futils.c:
23
24 Do not resolve symlinks in PORTAGE_TMPDIR in sandbox .. we will handle that
25 in libsandbox .. bug #100309.
26
27 22 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h:
28
29 Print all logging to stderr, bug #90343, comment #15, by Zac Medico.
30
31 * sandbox-1.2.11 (2005/07/14)
32
33 14 July 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
34 Fix getcwd, bug #98419.
35
36 08 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c,
37 libsandbox.c:
38 - Try to cleanup and make error handling/printing consistent.
39 - Remove old logs if present and conflicting with current.
40 - Fix compile error with previous change, and return rather then exit().
41
42 07 July 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
43 sandbox.h, sandbox_futils.c:
44 - Fix possible segfault in env init code.
45 - Major cleanup of sandbox_futils.c. Removed most of the functions as we now
46 write to /var/log/sandbox/, so in theory do not need all that.
47 - Redo the interface of the get_* functions so that we do not leak memory.
48 - Remove sandbox_dir and co - we are not using it anymore.
49 - Remove unused includes and variables.
50 - Only declare functions in sandbox_futils.c that are used in libsandbox.c when
51 OUTSIDE_LIBSANDBOX is not defined.
52 - Cleanup access/log printing. Make access printing honour NOCOLOR. Fix log
53 printing's last line not honouring NOCOLOR.
54
55 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
56 libsandbox.c:
57 - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
58 write to it.
59 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
60 - Add check_prefixes() with major cleanup on check_access().
61 - Cleanup init_env_entries() and check_prefixes().
62
63 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
64 sandbox_futils.c, libsandbox.c:
65 Remove unused 'pids file' code.
66
67 * sandbox-1.2.10 (2005/07/03)
68
69 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
70 Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
71
72 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
73 General cleanups:
74 - Remove fooling around with exit codes - we error out on presence of a log
75 anyhow.
76 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
77 appropriate there.
78
79 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
80 Cleanup the fail_nametoolong stuff a bit more.
81
82 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
83 Remove hopefully the last ld.so.preload bits we do not use anymore.
84
85 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
86 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
87 in check_syscall(). Should speed things up a bit (at least for the getcwd()
88 and long path name test it goes down to under a second, and not 10+ seconds
89 like before). Also warn if we skip checking due to the canonicalized path
90 being too long.
91
92 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
93 More comment/readability cleanups.
94
95 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
96 sandbox_futils.c, libsandbox.c:
97 Some strncpy/strncat and other cleanups.
98
99 * sandbox-1.2.9 (2005/06/09)
100
101 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
102 Move symlink hack down a bit to try and minimize on the amount of lstat()
103 calls we do.
104
105 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
106 Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
107
108 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
109 Add wrapper for access() function, bug #85413.
110
111 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
112 Use generic getcwd() implementation from uclibc - should be more portable
113 and looks a bit cleaner.
114
115 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
116 Make sure our true_* pointers are initialized to NULL, and that we check for
117 all references that they are valid.
118
119 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
120 Be default we will fail if the path name we try to canonicalize is too long.
121 This however could cause issues with some things (bug #94630 and #21766), so
122 if fail_nametoolong == 0, canonicalize() will return a null length string and
123 do not fail.
124
125 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
126 Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
127 make sure we re-export the new TMPDIR environment variable.
128
129 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
130 Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
131 by Marcus D. Hanwell <cryos@gentoo.org>.
132
133 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
134 Add /dev/console to write list, bug #38588.
135
136 * sandbox-1.2.8 (2005/05/13)
137
138 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
139 sandbox.h, sandbox_futils.c:
140 General cleanups.
141
142 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
143 sandbox.h:
144 Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
145
146 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
147 sandbox.h, sandbox_futils.c:
148 Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
149 to use TMPDIR if present in environment.
150
151 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
152 Remove sandbox_log_file from main() as its no longer used.
153
154 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
155 sandbox_futils.c:
156 Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
157 if already exported when sandbox started). Fix get_sandbox_log() and new
158 get_sandbox_debug_log() to not use already exported environment variables if
159 they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
160 SB_PATH_MAX fixes.
161
162 * sandbox-1.2.7 (2005/05/12)
163
164 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
165 sandbox_futils.c:
166 More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
167
168 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
169 Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
170 with '(null)' in it if we did not call sandbox with absolute path.
171
172 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
173 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
174 for the child.
175
176 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
177 Remove global preload_adaptable as it is no longer used.
178
179 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
180 Rewrite environment stuff to only be set when execve'ing the child process
181 to try and avoid issues like bug #91541 that causes sandbox to crash if
182 we set LD_PRELOAD sandbox side already.
183
184 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
185 Move print_sandbox_log() up to make things neater.
186
187 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
188 Remove load_preload_libs(), as its not used anymore.
189
190 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
191 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
192
193 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
194 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
195
196 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
197 Remove ld.so.preload crap - we are not going to use it again.
198
199 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
200 Fix typo in code that checks if we got valid group information, causing a
201 segmentation fault, bug #91637.
202
203 * sandbox-1.2.6 (2005/05/10)
204
205 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
206 Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
207 for some odd reason, bug #91541.
208
209 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
210 Fix typo (sizeof -> strlen).
211
212 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
213 rewrote the sbcontext caching code so it accounts for env changes since lib
214 initialization.
215
216 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
217 We create libctest.c via configure, so no need to keep it around. Do some
218 cleanup related to libctest.c and libctest during configure.
219
220 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
221 Add rename support of symlinks pointing to protected files/directories.
222
223 * sandbox-1.2.5 (2005/05/04)
224
225 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
226 sandbox.bashrc:
227 Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
228 already set, init of the env vars fails for some reason, so do this later on,
229 and do not warn (bug #91431).
230
231 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
232 sandbox.bashrc:
233 Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
234
235 * sandbox-1.2.4 (2005/05/03)
236
237 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
238 Do not init the env entries with each call, as it creates too many calls to
239 lstat, etc. Should speedup things a bit, bug #91040.
240
241 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
242 Add /dev/pty to default write list. Noticed by Morfic.
243
244 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
245 sandbox.h:
246 uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
247 exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
248
249 * sandbox-1.2.3 (2005/04/29)
250
251 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
252 Do not check for (*&#$(* CXX or F77.
253
254 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
255 Do not append '/' to pathname in filter_path() if it already ends with it.
256
257 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
258 With az's help, clean up autotools to work with cross-compiling.
259
260 * sandbox-1.2.2 (2005/04/28)
261
262 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
263 Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
264 have issues; bug #90592.
265
266 * sandbox-1.2.1 (2005/04/23)
267
268 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
269 getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
270 Make sure all functions used in libsandbox.c is declared static. Define
271 SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
272 linking with its object. Hopefully this will fix bug #90153.
273
274 * sandbox-1.2 (2005/04/23)
275
276 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
277 Allow lchown a symlink in write-allowed path pointing to write-denied
278 target.
279
280 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
281 Also show resolved symlink names in the log.
282
283 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
284 Seems -nostdlib was the problem with the constructor/destructor - remove it
285 from Makefile.am, and change the constructor/destructor names again.
286
287 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
288 Also rename the _init() and _fini() declarations.
289
290 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
291 Fixup the constructor/destructor function names again (they should be _init()
292 and _fini() it seems, and not being called caused sandbox_lib_path to be
293 unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
294 Add both the path in given SANDBOX_x variable, as well as its symlink
295 resolved path in init_env_entries(). Modify filter_path() to be able to
296 resolve paths without resolving symlinks, as well as to be able to resolve
297 symlinks. Fix a possible segfault in check_access(). Add symlink resolving
298 to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
299 for bug #31019 cause access violations if we try to remove a symlink that is
300 not in protected path, but points to a protected path. Fix a memory leak in
301 sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
302 (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
303 (pid_string was uninitialized). General syntax cleanups.
304
305 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
306 infamous "pids file is not a regular file" w/out newline bug.
307
308 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
309 Correct libc_version path detection, since it was screwing up if libdir !=
310 "/lib/".
311
312 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
313 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
314
315 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
316 Fix symbols.in not added to dist.
317
318 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
319 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
320 White space fixes.
321
322 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
323 configure.in, getcwd.c, libsandbox.c, symbols.in:
324 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
325 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
326 for glibc and other libc's that use this. Update libsandbox.c to use these
327 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
328 process unset it.
329
330 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
331 killed off _init and _fini in favor of
332 void __attribute__ ((constructor)) init_func and
333 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
334
335 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
336 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
337 having the hick-ups.
338
339 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
340 Makefile.am: Fixed compilation.
341
342 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
343 Gutted the bugger so it stops checking for a c++ and fortran compiler.
344 Do *not* regenerate aclocal.m4 for making a release until a better
345 solution is created.
346
347 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
348 Removal of more hardcoded paths.
349
350 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
351 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
352
353 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
354 Sandbox is now autotooled, create-localdecls needs to be killed and the code
355 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
356 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
357 To get to a point of testing, automake && autoconf; created requisite files w/
358 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
359 /lib and /usr/lib/portage/bin.
360
361 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
362 closing out bug #70225, potential overflow of the sandbox_pids_file var.
363
364 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
365 (think it was at least) allows intermixing of code and data segments. bug #70351
366 should be fixed by this.
367
368 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
369 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
370
371 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
372 Seth Robertson that tracked down all adjuct flags for read operations that
373 do not invoke a write operation.
374
375 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
376 Another fix from jstubbs regarding a free() on a stack variable for the
377 environment -- tracking now prevents extraneous free()'s segfault.
378
379 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
380 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
381 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
382 Also remove the errno = ESUCCESS settings as documentation points out that
383 a library isn't allowed to do that.
384
385 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
386 file_security_check() function to check random potential exploits on files
387 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
388 the 'system-crippling' exploits (bug 21923) and catches a few other
389 potential problems.
390
391 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
392 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
393
394 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
395 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
396 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
397
398 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
399 Fix permissions and group of pids file and logs. Permissions should be 0664
400 and group should be 'portage'. Bug #34260.
401
402 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
403 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
404 to the real execve (in our execve wrapper). Seems that on some arches (sparc
405 among others) do not allow us to tamper with the readonly copy passed to
406 execve, so pass our own copy of the environment. Bug #42290.
407
408 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
409 Changed tail to head and added a notice about duration of glibc check.
410
411 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
412 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
413 as there isn't a guarentee that it is dynamic.
414
415 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
416 If 'file' passed to before_syscall(const char *func, const char *file) is
417 invalid, we should set errno to ENOENT, and not EINVAL. This should
418 close bug #32238.
419
420 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
421 Fix a bug that occurs mainly on 64bit arch, where the file passed to
422 the functions we wrap, is invalid, and then cause canonicalize to pass
423 garbage to before_syscall(), thanks to great detective work from
424 Andrea Luzzardi <al@sig11.org> (bug #29846).
425
426 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
427 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
428
429 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
430 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
431 only checked the destination patch, and not the source, so we could move
432 a protected file to a unprotected directory, and then delete/modify it.
433 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
434
435 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
436 Added python2.3 to the predict section/variable.
437
438 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
439 sandbox.h, sandbox_futils.c :
440 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
441 it is not set, it will revert to its old value.
442
443 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
444 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
445 rather than failing with a violation, bug #29748.
446
447 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
448 Fix canonicalize() to ignore calls with path = "".
449
450 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
451 sandbox_futils.c, canonicalize.c :
452 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
453 call handled strings larger than PATH_MAX (bug #21766). It however does not
454 work the same on 2.4 kernels.
455
456 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
457 do not need the system call. We use the default getcwd() function via a
458 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
459 means the current directory was removed, OR that the the system call for
460 getcwd failed (curious is that it do not fail and return NULL or set
461 errno, but rather just truncate the retured directory - usually from the
462 start), and if so, we use the generic getcwd() function (__egetcwd). Note
463 that we do not use the generic version all the time, as it calls lstat()
464 a great number of times, and performance degrade much.
465
466 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
467 libsandbox.c :
468 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
469
470 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
471 create-localdecls :
472 When checking path names of files accessed, we need to canonicalize it, else
473 it may be a symlink in a 'write allowed' directory pointing to a file in a
474 directory we should not have write access to.
475
476 With something like coreutils-5.0, we have two problems:
477 1) One of the tests checks if getcwd() can return a path longer than
478 PATH_MAX. This test then tries to create a dir which even while
479 created local (mkdir("conftest2")), it ends up being resolved with
480 a name that is much larger than PATH_MAX. The problem now is that
481 canonicalize() have undefined behaviour when the path was too long
482 (returned wrongly truncated paths, etc), and pass the wrong path to
483 before_syscall() (causing the bogus sandbox violations).
484 2) The ecanonicalize() function we used, along with the canonicalize()
485 function did not support longer than PATH_MAX. This is partly a
486 cause for 1), but the error checking (rather lack of it) of calls
487 to erealpath() in canonicalize() was the prime reason for 1).
488
489 As we do not use this canonicalized name to call the function, we resolve this
490 by fixing canonicalize() to do better error checking, and ecanonicalize() as
491 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
492 While they will resolve paths properly now, and can check if a write/read is
493 allowed, the functions called from the sandboxed environment will still work
494 as expected.
495
496 This should resolve bug #21766.
497
498 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
499 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
500 it (bug #16298).
501
502 Problem is that for some reason locale fopen's locale.alias with mode "rm".
503
504 -------------------------------------------------------
505 nosferatu root # grep fopen locale.log
506 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
507 nosferatu root #
508 --------------------------------------------------------
509
510 I checked the source of locale, but it have fopen with mode 'r', so
511 not sure where the "rm" mode comes from. Anyhow, changed the check in
512 before_syscall_open_char() to also see mode "rm" as readonly.
513
514 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
515
516 Add glibc-2.3 support.
517
518 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
519
520 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
521 operations releated to preload, as well as only try to modify ld.so.preload
522 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
523 not using ld.so.preload. Fix to not write this instance of sandbox's pid
524 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
525
526 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
527
528 Changed the LD to CC for hppa.
529
530 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
531
532 Killed the previous changes I made.
533
534 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
535
536 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
537
538 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
539
540 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
541
542 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
543
544 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
545 for this fix.
546
547 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
548
549 sandbox_futils defined a dirname() function that was masking the same
550 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
551 '/usr/lib/portage/bi/'). Fixed function to return expected results and
552 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
553 11231.
554
555 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
556
557 Fix a segfault in libsandbox.c if canonicalize() was called with
558 first parameter = NULL.
559
560 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
561
562 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
563 cleanup() for this.
564
565 Change cleanup() in sandbox.c not to exit with fail status if
566 the pidsfile is missing. We really should still display sandbox
567 violations if they occured.
568
569 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
570
571 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
572 the last sandbox running.
573
574 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
575
576 Major cleanups to mainly libsandbox.c again.
577
578 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
579
580 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
581 parties involved should please contact me so that we can fix it.
582
583 Add opendir wrapper to libsandbox.c.
584
585 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
586
587 Do some more cleanups to ecanonicalize(), as it dropped filenames in
588 rare cases (after my symlink cleanups), and caused glibc to bork.
589 These fixes went into canonicalize.c.
590
591 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
592
593 Fix spawn_shell() and main() in sandbox.c to properly return fail
594 status.
595
596 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
597
598 The new canonicalize() function in libsandbox.c also resolved symlinks,
599 which caused on cleaning sandbox errors if the symlink pointed to a
600 file in the live root. Ripped out canonicalize() and realpath() from
601 glibc; removed the symlink stuff, and changed them to ecanonicalize()
602 and erealpath().
603
604 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
605
606 Ripped out all the wrappers, and implemented those of InstallWatch.
607 Losts of cleanups and bugfixes. Implement a execve that forces
608 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
609 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
610 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
611 parts; it now have an install target.
612
613 Reformat the whole thing to look somewhat like the reworked sandbox.c
614 and new sandbox.h and sandbox_futils.c from:
615
616 Brad House <brad@mainstreetsoftworks.com>.
617
618 Additional Copyrights now due to the InstallWatch code:
619
620 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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