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Revision 153 - (show annotations) (download)
Mon Aug 1 07:57:35 2005 UTC (9 years, 1 month ago) by azarah
Original Path: trunk/ChangeLog
File size: 27602 byte(s)
Still do normal log if debugging is requested.
1 # ChangeLog for Path Sandbox
2 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 # $Header$
4
5 01 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
6
7 Still do normal log if debugging is requested.
8
9 27 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
10 sandbox_futils.c:
11
12 Do not resolve symlinks in PORTAGE_TMPDIR in sandbox .. we will handle that
13 in libsandbox .. bug #100309.
14
15 22 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h:
16
17 Print all logging to stderr, bug #90343, comment #15, by Zac Medico.
18
19 * sandbox-1.2.11 (2005/07/14)
20
21 14 July 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
22 Fix getcwd, bug #98419.
23
24 08 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c,
25 libsandbox.c:
26 - Try to cleanup and make error handling/printing consistent.
27 - Remove old logs if present and conflicting with current.
28 - Fix compile error with previous change, and return rather then exit().
29
30 07 July 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
31 sandbox.h, sandbox_futils.c:
32 - Fix possible segfault in env init code.
33 - Major cleanup of sandbox_futils.c. Removed most of the functions as we now
34 write to /var/log/sandbox/, so in theory do not need all that.
35 - Redo the interface of the get_* functions so that we do not leak memory.
36 - Remove sandbox_dir and co - we are not using it anymore.
37 - Remove unused includes and variables.
38 - Only declare functions in sandbox_futils.c that are used in libsandbox.c when
39 OUTSIDE_LIBSANDBOX is not defined.
40 - Cleanup access/log printing. Make access printing honour NOCOLOR. Fix log
41 printing's last line not honouring NOCOLOR.
42
43 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
44 libsandbox.c:
45 - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
46 write to it.
47 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
48 - Add check_prefixes() with major cleanup on check_access().
49 - Cleanup init_env_entries() and check_prefixes().
50
51 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
52 sandbox_futils.c, libsandbox.c:
53 Remove unused 'pids file' code.
54
55 * sandbox-1.2.10 (2005/07/03)
56
57 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
58 Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
59
60 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
61 General cleanups:
62 - Remove fooling around with exit codes - we error out on presence of a log
63 anyhow.
64 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
65 appropriate there.
66
67 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
68 Cleanup the fail_nametoolong stuff a bit more.
69
70 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
71 Remove hopefully the last ld.so.preload bits we do not use anymore.
72
73 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
74 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
75 in check_syscall(). Should speed things up a bit (at least for the getcwd()
76 and long path name test it goes down to under a second, and not 10+ seconds
77 like before). Also warn if we skip checking due to the canonicalized path
78 being too long.
79
80 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
81 More comment/readability cleanups.
82
83 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
84 sandbox_futils.c, libsandbox.c:
85 Some strncpy/strncat and other cleanups.
86
87 * sandbox-1.2.9 (2005/06/09)
88
89 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
90 Move symlink hack down a bit to try and minimize on the amount of lstat()
91 calls we do.
92
93 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
94 Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
95
96 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
97 Add wrapper for access() function, bug #85413.
98
99 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
100 Use generic getcwd() implementation from uclibc - should be more portable
101 and looks a bit cleaner.
102
103 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
104 Make sure our true_* pointers are initialized to NULL, and that we check for
105 all references that they are valid.
106
107 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
108 Be default we will fail if the path name we try to canonicalize is too long.
109 This however could cause issues with some things (bug #94630 and #21766), so
110 if fail_nametoolong == 0, canonicalize() will return a null length string and
111 do not fail.
112
113 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
114 Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
115 make sure we re-export the new TMPDIR environment variable.
116
117 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
118 Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
119 by Marcus D. Hanwell <cryos@gentoo.org>.
120
121 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
122 Add /dev/console to write list, bug #38588.
123
124 * sandbox-1.2.8 (2005/05/13)
125
126 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
127 sandbox.h, sandbox_futils.c:
128 General cleanups.
129
130 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
131 sandbox.h:
132 Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
133
134 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
135 sandbox.h, sandbox_futils.c:
136 Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
137 to use TMPDIR if present in environment.
138
139 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
140 Remove sandbox_log_file from main() as its no longer used.
141
142 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
143 sandbox_futils.c:
144 Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
145 if already exported when sandbox started). Fix get_sandbox_log() and new
146 get_sandbox_debug_log() to not use already exported environment variables if
147 they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
148 SB_PATH_MAX fixes.
149
150 * sandbox-1.2.7 (2005/05/12)
151
152 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
153 sandbox_futils.c:
154 More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
155
156 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
157 Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
158 with '(null)' in it if we did not call sandbox with absolute path.
159
160 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
161 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
162 for the child.
163
164 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
165 Remove global preload_adaptable as it is no longer used.
166
167 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
168 Rewrite environment stuff to only be set when execve'ing the child process
169 to try and avoid issues like bug #91541 that causes sandbox to crash if
170 we set LD_PRELOAD sandbox side already.
171
172 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
173 Move print_sandbox_log() up to make things neater.
174
175 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
176 Remove load_preload_libs(), as its not used anymore.
177
178 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
179 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
180
181 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
182 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
183
184 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
185 Remove ld.so.preload crap - we are not going to use it again.
186
187 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
188 Fix typo in code that checks if we got valid group information, causing a
189 segmentation fault, bug #91637.
190
191 * sandbox-1.2.6 (2005/05/10)
192
193 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
194 Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
195 for some odd reason, bug #91541.
196
197 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
198 Fix typo (sizeof -> strlen).
199
200 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
201 rewrote the sbcontext caching code so it accounts for env changes since lib
202 initialization.
203
204 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
205 We create libctest.c via configure, so no need to keep it around. Do some
206 cleanup related to libctest.c and libctest during configure.
207
208 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
209 Add rename support of symlinks pointing to protected files/directories.
210
211 * sandbox-1.2.5 (2005/05/04)
212
213 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
214 sandbox.bashrc:
215 Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
216 already set, init of the env vars fails for some reason, so do this later on,
217 and do not warn (bug #91431).
218
219 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
220 sandbox.bashrc:
221 Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
222
223 * sandbox-1.2.4 (2005/05/03)
224
225 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
226 Do not init the env entries with each call, as it creates too many calls to
227 lstat, etc. Should speedup things a bit, bug #91040.
228
229 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
230 Add /dev/pty to default write list. Noticed by Morfic.
231
232 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
233 sandbox.h:
234 uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
235 exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
236
237 * sandbox-1.2.3 (2005/04/29)
238
239 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
240 Do not check for (*&#$(* CXX or F77.
241
242 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
243 Do not append '/' to pathname in filter_path() if it already ends with it.
244
245 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
246 With az's help, clean up autotools to work with cross-compiling.
247
248 * sandbox-1.2.2 (2005/04/28)
249
250 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
251 Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
252 have issues; bug #90592.
253
254 * sandbox-1.2.1 (2005/04/23)
255
256 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
257 getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
258 Make sure all functions used in libsandbox.c is declared static. Define
259 SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
260 linking with its object. Hopefully this will fix bug #90153.
261
262 * sandbox-1.2 (2005/04/23)
263
264 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
265 Allow lchown a symlink in write-allowed path pointing to write-denied
266 target.
267
268 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
269 Also show resolved symlink names in the log.
270
271 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
272 Seems -nostdlib was the problem with the constructor/destructor - remove it
273 from Makefile.am, and change the constructor/destructor names again.
274
275 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
276 Also rename the _init() and _fini() declarations.
277
278 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
279 Fixup the constructor/destructor function names again (they should be _init()
280 and _fini() it seems, and not being called caused sandbox_lib_path to be
281 unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
282 Add both the path in given SANDBOX_x variable, as well as its symlink
283 resolved path in init_env_entries(). Modify filter_path() to be able to
284 resolve paths without resolving symlinks, as well as to be able to resolve
285 symlinks. Fix a possible segfault in check_access(). Add symlink resolving
286 to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
287 for bug #31019 cause access violations if we try to remove a symlink that is
288 not in protected path, but points to a protected path. Fix a memory leak in
289 sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
290 (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
291 (pid_string was uninitialized). General syntax cleanups.
292
293 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
294 infamous "pids file is not a regular file" w/out newline bug.
295
296 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
297 Correct libc_version path detection, since it was screwing up if libdir !=
298 "/lib/".
299
300 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
301 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
302
303 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
304 Fix symbols.in not added to dist.
305
306 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
307 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
308 White space fixes.
309
310 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
311 configure.in, getcwd.c, libsandbox.c, symbols.in:
312 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
313 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
314 for glibc and other libc's that use this. Update libsandbox.c to use these
315 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
316 process unset it.
317
318 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
319 killed off _init and _fini in favor of
320 void __attribute__ ((constructor)) init_func and
321 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
322
323 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
324 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
325 having the hick-ups.
326
327 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
328 Makefile.am: Fixed compilation.
329
330 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
331 Gutted the bugger so it stops checking for a c++ and fortran compiler.
332 Do *not* regenerate aclocal.m4 for making a release until a better
333 solution is created.
334
335 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
336 Removal of more hardcoded paths.
337
338 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
339 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
340
341 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
342 Sandbox is now autotooled, create-localdecls needs to be killed and the code
343 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
344 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
345 To get to a point of testing, automake && autoconf; created requisite files w/
346 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
347 /lib and /usr/lib/portage/bin.
348
349 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
350 closing out bug #70225, potential overflow of the sandbox_pids_file var.
351
352 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
353 (think it was at least) allows intermixing of code and data segments. bug #70351
354 should be fixed by this.
355
356 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
357 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
358
359 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
360 Seth Robertson that tracked down all adjuct flags for read operations that
361 do not invoke a write operation.
362
363 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
364 Another fix from jstubbs regarding a free() on a stack variable for the
365 environment -- tracking now prevents extraneous free()'s segfault.
366
367 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
368 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
369 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
370 Also remove the errno = ESUCCESS settings as documentation points out that
371 a library isn't allowed to do that.
372
373 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
374 file_security_check() function to check random potential exploits on files
375 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
376 the 'system-crippling' exploits (bug 21923) and catches a few other
377 potential problems.
378
379 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
380 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
381
382 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
383 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
384 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
385
386 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
387 Fix permissions and group of pids file and logs. Permissions should be 0664
388 and group should be 'portage'. Bug #34260.
389
390 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
391 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
392 to the real execve (in our execve wrapper). Seems that on some arches (sparc
393 among others) do not allow us to tamper with the readonly copy passed to
394 execve, so pass our own copy of the environment. Bug #42290.
395
396 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
397 Changed tail to head and added a notice about duration of glibc check.
398
399 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
400 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
401 as there isn't a guarentee that it is dynamic.
402
403 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
404 If 'file' passed to before_syscall(const char *func, const char *file) is
405 invalid, we should set errno to ENOENT, and not EINVAL. This should
406 close bug #32238.
407
408 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
409 Fix a bug that occurs mainly on 64bit arch, where the file passed to
410 the functions we wrap, is invalid, and then cause canonicalize to pass
411 garbage to before_syscall(), thanks to great detective work from
412 Andrea Luzzardi <al@sig11.org> (bug #29846).
413
414 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
415 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
416
417 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
418 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
419 only checked the destination patch, and not the source, so we could move
420 a protected file to a unprotected directory, and then delete/modify it.
421 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
422
423 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
424 Added python2.3 to the predict section/variable.
425
426 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
427 sandbox.h, sandbox_futils.c :
428 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
429 it is not set, it will revert to its old value.
430
431 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
432 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
433 rather than failing with a violation, bug #29748.
434
435 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
436 Fix canonicalize() to ignore calls with path = "".
437
438 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
439 sandbox_futils.c, canonicalize.c :
440 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
441 call handled strings larger than PATH_MAX (bug #21766). It however does not
442 work the same on 2.4 kernels.
443
444 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
445 do not need the system call. We use the default getcwd() function via a
446 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
447 means the current directory was removed, OR that the the system call for
448 getcwd failed (curious is that it do not fail and return NULL or set
449 errno, but rather just truncate the retured directory - usually from the
450 start), and if so, we use the generic getcwd() function (__egetcwd). Note
451 that we do not use the generic version all the time, as it calls lstat()
452 a great number of times, and performance degrade much.
453
454 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
455 libsandbox.c :
456 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
457
458 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
459 create-localdecls :
460 When checking path names of files accessed, we need to canonicalize it, else
461 it may be a symlink in a 'write allowed' directory pointing to a file in a
462 directory we should not have write access to.
463
464 With something like coreutils-5.0, we have two problems:
465 1) One of the tests checks if getcwd() can return a path longer than
466 PATH_MAX. This test then tries to create a dir which even while
467 created local (mkdir("conftest2")), it ends up being resolved with
468 a name that is much larger than PATH_MAX. The problem now is that
469 canonicalize() have undefined behaviour when the path was too long
470 (returned wrongly truncated paths, etc), and pass the wrong path to
471 before_syscall() (causing the bogus sandbox violations).
472 2) The ecanonicalize() function we used, along with the canonicalize()
473 function did not support longer than PATH_MAX. This is partly a
474 cause for 1), but the error checking (rather lack of it) of calls
475 to erealpath() in canonicalize() was the prime reason for 1).
476
477 As we do not use this canonicalized name to call the function, we resolve this
478 by fixing canonicalize() to do better error checking, and ecanonicalize() as
479 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
480 While they will resolve paths properly now, and can check if a write/read is
481 allowed, the functions called from the sandboxed environment will still work
482 as expected.
483
484 This should resolve bug #21766.
485
486 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
487 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
488 it (bug #16298).
489
490 Problem is that for some reason locale fopen's locale.alias with mode "rm".
491
492 -------------------------------------------------------
493 nosferatu root # grep fopen locale.log
494 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
495 nosferatu root #
496 --------------------------------------------------------
497
498 I checked the source of locale, but it have fopen with mode 'r', so
499 not sure where the "rm" mode comes from. Anyhow, changed the check in
500 before_syscall_open_char() to also see mode "rm" as readonly.
501
502 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
503
504 Add glibc-2.3 support.
505
506 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
507
508 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
509 operations releated to preload, as well as only try to modify ld.so.preload
510 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
511 not using ld.so.preload. Fix to not write this instance of sandbox's pid
512 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
513
514 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
515
516 Changed the LD to CC for hppa.
517
518 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
519
520 Killed the previous changes I made.
521
522 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
523
524 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
525
526 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
527
528 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
529
530 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
531
532 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
533 for this fix.
534
535 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
536
537 sandbox_futils defined a dirname() function that was masking the same
538 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
539 '/usr/lib/portage/bi/'). Fixed function to return expected results and
540 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
541 11231.
542
543 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
544
545 Fix a segfault in libsandbox.c if canonicalize() was called with
546 first parameter = NULL.
547
548 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
549
550 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
551 cleanup() for this.
552
553 Change cleanup() in sandbox.c not to exit with fail status if
554 the pidsfile is missing. We really should still display sandbox
555 violations if they occured.
556
557 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
558
559 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
560 the last sandbox running.
561
562 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
563
564 Major cleanups to mainly libsandbox.c again.
565
566 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
567
568 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
569 parties involved should please contact me so that we can fix it.
570
571 Add opendir wrapper to libsandbox.c.
572
573 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
574
575 Do some more cleanups to ecanonicalize(), as it dropped filenames in
576 rare cases (after my symlink cleanups), and caused glibc to bork.
577 These fixes went into canonicalize.c.
578
579 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
580
581 Fix spawn_shell() and main() in sandbox.c to properly return fail
582 status.
583
584 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
585
586 The new canonicalize() function in libsandbox.c also resolved symlinks,
587 which caused on cleaning sandbox errors if the symlink pointed to a
588 file in the live root. Ripped out canonicalize() and realpath() from
589 glibc; removed the symlink stuff, and changed them to ecanonicalize()
590 and erealpath().
591
592 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
593
594 Ripped out all the wrappers, and implemented those of InstallWatch.
595 Losts of cleanups and bugfixes. Implement a execve that forces
596 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
597 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
598 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
599 parts; it now have an install target.
600
601 Reformat the whole thing to look somewhat like the reworked sandbox.c
602 and new sandbox.h and sandbox_futils.c from:
603
604 Brad House <brad@mainstreetsoftworks.com>.
605
606 Additional Copyrights now due to the InstallWatch code:
607
608 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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