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Revision 195 - (show annotations) (download)
Thu Dec 1 11:04:31 2005 UTC (8 years, 11 months ago) by azarah
Original Path: trunk/ChangeLog
File size: 31181 byte(s)
Rather use fstat() to get file size in file_length() than lseek().
1 # ChangeLog for Path Sandbox
2 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 # $Header$
4
5 01 Dec 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, Makefile.am,
6 localdecls.h, scripts/Makefile.am, scripts/gen_symbol_version_map.awk,
7 scripts/gen_symbol_header.awk, src/Makefile.am, src/symbols.in,
8 src/libsandbox.c, src/getcwd.c, src/sandbox.c, data/sandbox.bashrc:
9
10 Use versioned symbols on supported libc's for functions we wrap, as well as
11 provide all versions of specific functions. Some syntax cleanups.
12
13 Only check SANDBOX_ACTIVE, and not its value. More BASH_ENV fixes.
14
15 Rename configure.in to configure.ac.
16
17 Fix non-versioned libc's to also prepend '__' to internal symbols by using
18 strong aliases.
19
20 Remove the SB_STATIC and including of getcwd.c, etc voodoo, as we new use a
21 symbol map, and all non-exported symbols are local. Cleanup getcwd.c, as
22 the generic getcwd for older 2.4 kernels do not work properly anyhow, and
23 just makes things slower. Some other warning fixes.
24
25 Rename src/symbols.in to src/symbols.h.in.
26
27 Cleanup local defines for egetcwd() and erealpath().
28
29 Rename filter_path() to resolve_path() and other renames for clarity.
30
31 Fixup SANDBOX_ON handling after already running changes.
32
33 Use egetcwd() in sandbox.c.
34
35 Rather use fstat() to get file size in file_length() than lseek().
36
37 28 Nov 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, sandbox.c,
38 sandbox_fdutils.c:
39
40 Detect if we on 64bit arch automatically.
41
42 Update contact email. Fix quoting.
43
44 Revert 64bit arch test, as we should build the 32bit version without full
45 path checking as well, and add --enable-multilib switch to configure.
46
47 * sandbox-1.2.14 (2005/11/28)
48
49 28 Nov 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
50 sandbox.c, sandbox.h, sandbox.bashrc:
51
52 Check generic getcwd()'s return as well for validity, bug #101728.
53
54 Cleanup environ variables.
55
56 Rather check SANDBOX_ACTIVE if we are already running. Set SANDBOX_ACTIVE
57 to readonly in sandbox.bashrc.
58
59 Make sure we use our bashrc.
60
61 01 Nov 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
62
63 Do not pass mode to true_open and true_open64 if not needed. Should fix a
64 segfault in some cases.
65
66 * sandbox-1.2.13 (2005/09/12)
67
68 12 Sep 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, libsandbox.c:
69
70 Do not handle adding working directory to SANDBOX_WRITE, as portage does it
71 itself.
72
73 Make libsb_fini() do cleanup a bit more complete just in case we get another
74 uClibc 'call preloaded library fini before that of app' issue ... probably
75 will not help much, but we try.
76
77 04 Sep 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
78
79 Also allow symlink() system call to operate on a symlink in a writable path
80 that points to non-writable path, bug #104711.
81
82 * sandbox-1.2.12 (2005/08/05)
83
84 05 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
85 sandbox.h:
86
87 Do not give an access violation if the access() system call do not have
88 write/read access - it does not actually modify, so we only need to return
89 not being able to write/read. Noted by Andres Loeh <kosmikus@gentoo.org>,
90 bug #101433.
91
92 If we are called from the command line, do not care about PORTAGE_TMPDIR,
93 and make the current directory the work directory. Also rename the variable
94 portage_tmp_dir to work_dir.
95
96 Remove the tmp_dir variable - we do not need it.
97
98 Improve error handling for get_sandbox_*_envvar() functions.
99
100 01 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
101
102 Still do normal log if debugging is requested.
103
104 Add support for SANDBOX_VERBOSE (enabled by default). Adjust SANDBOX_DEBUG
105 to only enable if equal to "1" or "yes".
106
107 Add /dev/tts to write permit, bug #42809.
108
109 27 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
110 sandbox_futils.c:
111
112 Do not resolve symlinks in PORTAGE_TMPDIR in sandbox .. we will handle that
113 in libsandbox .. bug #100309.
114
115 22 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h:
116
117 Print all logging to stderr, bug #90343, comment #15, by Zac Medico.
118
119 * sandbox-1.2.11 (2005/07/14)
120
121 14 July 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
122 Fix getcwd, bug #98419.
123
124 08 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c,
125 libsandbox.c:
126 - Try to cleanup and make error handling/printing consistent.
127 - Remove old logs if present and conflicting with current.
128 - Fix compile error with previous change, and return rather then exit().
129
130 07 July 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
131 sandbox.h, sandbox_futils.c:
132 - Fix possible segfault in env init code.
133 - Major cleanup of sandbox_futils.c. Removed most of the functions as we now
134 write to /var/log/sandbox/, so in theory do not need all that.
135 - Redo the interface of the get_* functions so that we do not leak memory.
136 - Remove sandbox_dir and co - we are not using it anymore.
137 - Remove unused includes and variables.
138 - Only declare functions in sandbox_futils.c that are used in libsandbox.c when
139 OUTSIDE_LIBSANDBOX is not defined.
140 - Cleanup access/log printing. Make access printing honour NOCOLOR. Fix log
141 printing's last line not honouring NOCOLOR.
142
143 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
144 libsandbox.c:
145 - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
146 write to it.
147 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
148 - Add check_prefixes() with major cleanup on check_access().
149 - Cleanup init_env_entries() and check_prefixes().
150
151 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
152 sandbox_futils.c, libsandbox.c:
153 Remove unused 'pids file' code.
154
155 * sandbox-1.2.10 (2005/07/03)
156
157 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
158 Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
159
160 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
161 General cleanups:
162 - Remove fooling around with exit codes - we error out on presence of a log
163 anyhow.
164 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
165 appropriate there.
166
167 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
168 Cleanup the fail_nametoolong stuff a bit more.
169
170 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
171 Remove hopefully the last ld.so.preload bits we do not use anymore.
172
173 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
174 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
175 in check_syscall(). Should speed things up a bit (at least for the getcwd()
176 and long path name test it goes down to under a second, and not 10+ seconds
177 like before). Also warn if we skip checking due to the canonicalized path
178 being too long.
179
180 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
181 More comment/readability cleanups.
182
183 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
184 sandbox_futils.c, libsandbox.c:
185 Some strncpy/strncat and other cleanups.
186
187 * sandbox-1.2.9 (2005/06/09)
188
189 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
190 Move symlink hack down a bit to try and minimize on the amount of lstat()
191 calls we do.
192
193 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
194 Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
195
196 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
197 Add wrapper for access() function, bug #85413.
198
199 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
200 Use generic getcwd() implementation from uclibc - should be more portable
201 and looks a bit cleaner.
202
203 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
204 Make sure our true_* pointers are initialized to NULL, and that we check for
205 all references that they are valid.
206
207 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
208 Be default we will fail if the path name we try to canonicalize is too long.
209 This however could cause issues with some things (bug #94630 and #21766), so
210 if fail_nametoolong == 0, canonicalize() will return a null length string and
211 do not fail.
212
213 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
214 Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
215 make sure we re-export the new TMPDIR environment variable.
216
217 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
218 Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
219 by Marcus D. Hanwell <cryos@gentoo.org>.
220
221 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
222 Add /dev/console to write list, bug #38588.
223
224 * sandbox-1.2.8 (2005/05/13)
225
226 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
227 sandbox.h, sandbox_futils.c:
228 General cleanups.
229
230 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
231 sandbox.h:
232 Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
233
234 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
235 sandbox.h, sandbox_futils.c:
236 Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
237 to use TMPDIR if present in environment.
238
239 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
240 Remove sandbox_log_file from main() as its no longer used.
241
242 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
243 sandbox_futils.c:
244 Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
245 if already exported when sandbox started). Fix get_sandbox_log() and new
246 get_sandbox_debug_log() to not use already exported environment variables if
247 they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
248 SB_PATH_MAX fixes.
249
250 * sandbox-1.2.7 (2005/05/12)
251
252 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
253 sandbox_futils.c:
254 More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
255
256 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
257 Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
258 with '(null)' in it if we did not call sandbox with absolute path.
259
260 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
261 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
262 for the child.
263
264 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
265 Remove global preload_adaptable as it is no longer used.
266
267 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
268 Rewrite environment stuff to only be set when execve'ing the child process
269 to try and avoid issues like bug #91541 that causes sandbox to crash if
270 we set LD_PRELOAD sandbox side already.
271
272 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
273 Move print_sandbox_log() up to make things neater.
274
275 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
276 Remove load_preload_libs(), as its not used anymore.
277
278 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
279 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
280
281 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
282 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
283
284 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
285 Remove ld.so.preload crap - we are not going to use it again.
286
287 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
288 Fix typo in code that checks if we got valid group information, causing a
289 segmentation fault, bug #91637.
290
291 * sandbox-1.2.6 (2005/05/10)
292
293 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
294 Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
295 for some odd reason, bug #91541.
296
297 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
298 Fix typo (sizeof -> strlen).
299
300 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
301 rewrote the sbcontext caching code so it accounts for env changes since lib
302 initialization.
303
304 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
305 We create libctest.c via configure, so no need to keep it around. Do some
306 cleanup related to libctest.c and libctest during configure.
307
308 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
309 Add rename support of symlinks pointing to protected files/directories.
310
311 * sandbox-1.2.5 (2005/05/04)
312
313 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
314 sandbox.bashrc:
315 Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
316 already set, init of the env vars fails for some reason, so do this later on,
317 and do not warn (bug #91431).
318
319 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
320 sandbox.bashrc:
321 Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
322
323 * sandbox-1.2.4 (2005/05/03)
324
325 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
326 Do not init the env entries with each call, as it creates too many calls to
327 lstat, etc. Should speedup things a bit, bug #91040.
328
329 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
330 Add /dev/pty to default write list. Noticed by Morfic.
331
332 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
333 sandbox.h:
334 uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
335 exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
336
337 * sandbox-1.2.3 (2005/04/29)
338
339 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
340 Do not check for (*&#$(* CXX or F77.
341
342 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
343 Do not append '/' to pathname in filter_path() if it already ends with it.
344
345 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
346 With az's help, clean up autotools to work with cross-compiling.
347
348 * sandbox-1.2.2 (2005/04/28)
349
350 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
351 Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
352 have issues; bug #90592.
353
354 * sandbox-1.2.1 (2005/04/23)
355
356 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
357 getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
358 Make sure all functions used in libsandbox.c is declared static. Define
359 SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
360 linking with its object. Hopefully this will fix bug #90153.
361
362 * sandbox-1.2 (2005/04/23)
363
364 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
365 Allow lchown a symlink in write-allowed path pointing to write-denied
366 target.
367
368 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
369 Also show resolved symlink names in the log.
370
371 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
372 Seems -nostdlib was the problem with the constructor/destructor - remove it
373 from Makefile.am, and change the constructor/destructor names again.
374
375 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
376 Also rename the _init() and _fini() declarations.
377
378 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
379 Fixup the constructor/destructor function names again (they should be _init()
380 and _fini() it seems, and not being called caused sandbox_lib_path to be
381 unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
382 Add both the path in given SANDBOX_x variable, as well as its symlink
383 resolved path in init_env_entries(). Modify filter_path() to be able to
384 resolve paths without resolving symlinks, as well as to be able to resolve
385 symlinks. Fix a possible segfault in check_access(). Add symlink resolving
386 to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
387 for bug #31019 cause access violations if we try to remove a symlink that is
388 not in protected path, but points to a protected path. Fix a memory leak in
389 sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
390 (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
391 (pid_string was uninitialized). General syntax cleanups.
392
393 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
394 infamous "pids file is not a regular file" w/out newline bug.
395
396 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
397 Correct libc_version path detection, since it was screwing up if libdir !=
398 "/lib/".
399
400 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
401 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
402
403 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
404 Fix symbols.in not added to dist.
405
406 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
407 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
408 White space fixes.
409
410 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
411 configure.in, getcwd.c, libsandbox.c, symbols.in:
412 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
413 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
414 for glibc and other libc's that use this. Update libsandbox.c to use these
415 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
416 process unset it.
417
418 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
419 killed off _init and _fini in favor of
420 void __attribute__ ((constructor)) init_func and
421 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
422
423 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
424 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
425 having the hick-ups.
426
427 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
428 Makefile.am: Fixed compilation.
429
430 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
431 Gutted the bugger so it stops checking for a c++ and fortran compiler.
432 Do *not* regenerate aclocal.m4 for making a release until a better
433 solution is created.
434
435 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
436 Removal of more hardcoded paths.
437
438 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
439 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
440
441 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
442 Sandbox is now autotooled, create-localdecls needs to be killed and the code
443 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
444 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
445 To get to a point of testing, automake && autoconf; created requisite files w/
446 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
447 /lib and /usr/lib/portage/bin.
448
449 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
450 closing out bug #70225, potential overflow of the sandbox_pids_file var.
451
452 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
453 (think it was at least) allows intermixing of code and data segments. bug #70351
454 should be fixed by this.
455
456 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
457 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
458
459 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
460 Seth Robertson that tracked down all adjuct flags for read operations that
461 do not invoke a write operation.
462
463 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
464 Another fix from jstubbs regarding a free() on a stack variable for the
465 environment -- tracking now prevents extraneous free()'s segfault.
466
467 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
468 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
469 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
470 Also remove the errno = ESUCCESS settings as documentation points out that
471 a library isn't allowed to do that.
472
473 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
474 file_security_check() function to check random potential exploits on files
475 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
476 the 'system-crippling' exploits (bug 21923) and catches a few other
477 potential problems.
478
479 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
480 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
481
482 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
483 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
484 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
485
486 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
487 Fix permissions and group of pids file and logs. Permissions should be 0664
488 and group should be 'portage'. Bug #34260.
489
490 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
491 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
492 to the real execve (in our execve wrapper). Seems that on some arches (sparc
493 among others) do not allow us to tamper with the readonly copy passed to
494 execve, so pass our own copy of the environment. Bug #42290.
495
496 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
497 Changed tail to head and added a notice about duration of glibc check.
498
499 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
500 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
501 as there isn't a guarentee that it is dynamic.
502
503 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
504 If 'file' passed to before_syscall(const char *func, const char *file) is
505 invalid, we should set errno to ENOENT, and not EINVAL. This should
506 close bug #32238.
507
508 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
509 Fix a bug that occurs mainly on 64bit arch, where the file passed to
510 the functions we wrap, is invalid, and then cause canonicalize to pass
511 garbage to before_syscall(), thanks to great detective work from
512 Andrea Luzzardi <al@sig11.org> (bug #29846).
513
514 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
515 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
516
517 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
518 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
519 only checked the destination patch, and not the source, so we could move
520 a protected file to a unprotected directory, and then delete/modify it.
521 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
522
523 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
524 Added python2.3 to the predict section/variable.
525
526 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
527 sandbox.h, sandbox_futils.c :
528 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
529 it is not set, it will revert to its old value.
530
531 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
532 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
533 rather than failing with a violation, bug #29748.
534
535 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
536 Fix canonicalize() to ignore calls with path = "".
537
538 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
539 sandbox_futils.c, canonicalize.c :
540 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
541 call handled strings larger than PATH_MAX (bug #21766). It however does not
542 work the same on 2.4 kernels.
543
544 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
545 do not need the system call. We use the default getcwd() function via a
546 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
547 means the current directory was removed, OR that the the system call for
548 getcwd failed (curious is that it do not fail and return NULL or set
549 errno, but rather just truncate the retured directory - usually from the
550 start), and if so, we use the generic getcwd() function (__egetcwd). Note
551 that we do not use the generic version all the time, as it calls lstat()
552 a great number of times, and performance degrade much.
553
554 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
555 libsandbox.c :
556 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
557
558 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
559 create-localdecls :
560 When checking path names of files accessed, we need to canonicalize it, else
561 it may be a symlink in a 'write allowed' directory pointing to a file in a
562 directory we should not have write access to.
563
564 With something like coreutils-5.0, we have two problems:
565 1) One of the tests checks if getcwd() can return a path longer than
566 PATH_MAX. This test then tries to create a dir which even while
567 created local (mkdir("conftest2")), it ends up being resolved with
568 a name that is much larger than PATH_MAX. The problem now is that
569 canonicalize() have undefined behaviour when the path was too long
570 (returned wrongly truncated paths, etc), and pass the wrong path to
571 before_syscall() (causing the bogus sandbox violations).
572 2) The ecanonicalize() function we used, along with the canonicalize()
573 function did not support longer than PATH_MAX. This is partly a
574 cause for 1), but the error checking (rather lack of it) of calls
575 to erealpath() in canonicalize() was the prime reason for 1).
576
577 As we do not use this canonicalized name to call the function, we resolve this
578 by fixing canonicalize() to do better error checking, and ecanonicalize() as
579 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
580 While they will resolve paths properly now, and can check if a write/read is
581 allowed, the functions called from the sandboxed environment will still work
582 as expected.
583
584 This should resolve bug #21766.
585
586 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
587 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
588 it (bug #16298).
589
590 Problem is that for some reason locale fopen's locale.alias with mode "rm".
591
592 -------------------------------------------------------
593 nosferatu root # grep fopen locale.log
594 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
595 nosferatu root #
596 --------------------------------------------------------
597
598 I checked the source of locale, but it have fopen with mode 'r', so
599 not sure where the "rm" mode comes from. Anyhow, changed the check in
600 before_syscall_open_char() to also see mode "rm" as readonly.
601
602 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
603
604 Add glibc-2.3 support.
605
606 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
607
608 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
609 operations releated to preload, as well as only try to modify ld.so.preload
610 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
611 not using ld.so.preload. Fix to not write this instance of sandbox's pid
612 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
613
614 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
615
616 Changed the LD to CC for hppa.
617
618 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
619
620 Killed the previous changes I made.
621
622 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
623
624 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
625
626 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
627
628 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
629
630 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
631
632 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
633 for this fix.
634
635 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
636
637 sandbox_futils defined a dirname() function that was masking the same
638 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
639 '/usr/lib/portage/bi/'). Fixed function to return expected results and
640 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
641 11231.
642
643 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
644
645 Fix a segfault in libsandbox.c if canonicalize() was called with
646 first parameter = NULL.
647
648 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
649
650 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
651 cleanup() for this.
652
653 Change cleanup() in sandbox.c not to exit with fail status if
654 the pidsfile is missing. We really should still display sandbox
655 violations if they occured.
656
657 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
658
659 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
660 the last sandbox running.
661
662 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
663
664 Major cleanups to mainly libsandbox.c again.
665
666 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
667
668 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
669 parties involved should please contact me so that we can fix it.
670
671 Add opendir wrapper to libsandbox.c.
672
673 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
674
675 Do some more cleanups to ecanonicalize(), as it dropped filenames in
676 rare cases (after my symlink cleanups), and caused glibc to bork.
677 These fixes went into canonicalize.c.
678
679 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
680
681 Fix spawn_shell() and main() in sandbox.c to properly return fail
682 status.
683
684 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
685
686 The new canonicalize() function in libsandbox.c also resolved symlinks,
687 which caused on cleaning sandbox errors if the symlink pointed to a
688 file in the live root. Ripped out canonicalize() and realpath() from
689 glibc; removed the symlink stuff, and changed them to ecanonicalize()
690 and erealpath().
691
692 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
693
694 Ripped out all the wrappers, and implemented those of InstallWatch.
695 Losts of cleanups and bugfixes. Implement a execve that forces
696 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
697 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
698 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
699 parts; it now have an install target.
700
701 Reformat the whole thing to look somewhat like the reworked sandbox.c
702 and new sandbox.h and sandbox_futils.c from:
703
704 Brad House <brad@mainstreetsoftworks.com>.
705
706 Additional Copyrights now due to the InstallWatch code:
707
708 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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