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Revision 196 - (show annotations) (download)
Thu Dec 1 11:33:20 2005 UTC (9 years ago) by azarah
File size: 31222 byte(s)
Wrap mknod() as well.  Misc cleanups.
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 Wrap mknod() as well. Misc cleanups.
38
39 28 Nov 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, sandbox.c,
40 sandbox_fdutils.c:
41
42 Detect if we on 64bit arch automatically.
43
44 Update contact email. Fix quoting.
45
46 Revert 64bit arch test, as we should build the 32bit version without full
47 path checking as well, and add --enable-multilib switch to configure.
48
49 * sandbox-1.2.14 (2005/11/28)
50
51 28 Nov 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
52 sandbox.c, sandbox.h, sandbox.bashrc:
53
54 Check generic getcwd()'s return as well for validity, bug #101728.
55
56 Cleanup environ variables.
57
58 Rather check SANDBOX_ACTIVE if we are already running. Set SANDBOX_ACTIVE
59 to readonly in sandbox.bashrc.
60
61 Make sure we use our bashrc.
62
63 01 Nov 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
64
65 Do not pass mode to true_open and true_open64 if not needed. Should fix a
66 segfault in some cases.
67
68 * sandbox-1.2.13 (2005/09/12)
69
70 12 Sep 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, libsandbox.c:
71
72 Do not handle adding working directory to SANDBOX_WRITE, as portage does it
73 itself.
74
75 Make libsb_fini() do cleanup a bit more complete just in case we get another
76 uClibc 'call preloaded library fini before that of app' issue ... probably
77 will not help much, but we try.
78
79 04 Sep 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
80
81 Also allow symlink() system call to operate on a symlink in a writable path
82 that points to non-writable path, bug #104711.
83
84 * sandbox-1.2.12 (2005/08/05)
85
86 05 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
87 sandbox.h:
88
89 Do not give an access violation if the access() system call do not have
90 write/read access - it does not actually modify, so we only need to return
91 not being able to write/read. Noted by Andres Loeh <kosmikus@gentoo.org>,
92 bug #101433.
93
94 If we are called from the command line, do not care about PORTAGE_TMPDIR,
95 and make the current directory the work directory. Also rename the variable
96 portage_tmp_dir to work_dir.
97
98 Remove the tmp_dir variable - we do not need it.
99
100 Improve error handling for get_sandbox_*_envvar() functions.
101
102 01 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
103
104 Still do normal log if debugging is requested.
105
106 Add support for SANDBOX_VERBOSE (enabled by default). Adjust SANDBOX_DEBUG
107 to only enable if equal to "1" or "yes".
108
109 Add /dev/tts to write permit, bug #42809.
110
111 27 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
112 sandbox_futils.c:
113
114 Do not resolve symlinks in PORTAGE_TMPDIR in sandbox .. we will handle that
115 in libsandbox .. bug #100309.
116
117 22 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h:
118
119 Print all logging to stderr, bug #90343, comment #15, by Zac Medico.
120
121 * sandbox-1.2.11 (2005/07/14)
122
123 14 July 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
124 Fix getcwd, bug #98419.
125
126 08 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c,
127 libsandbox.c:
128 - Try to cleanup and make error handling/printing consistent.
129 - Remove old logs if present and conflicting with current.
130 - Fix compile error with previous change, and return rather then exit().
131
132 07 July 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
133 sandbox.h, sandbox_futils.c:
134 - Fix possible segfault in env init code.
135 - Major cleanup of sandbox_futils.c. Removed most of the functions as we now
136 write to /var/log/sandbox/, so in theory do not need all that.
137 - Redo the interface of the get_* functions so that we do not leak memory.
138 - Remove sandbox_dir and co - we are not using it anymore.
139 - Remove unused includes and variables.
140 - Only declare functions in sandbox_futils.c that are used in libsandbox.c when
141 OUTSIDE_LIBSANDBOX is not defined.
142 - Cleanup access/log printing. Make access printing honour NOCOLOR. Fix log
143 printing's last line not honouring NOCOLOR.
144
145 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
146 libsandbox.c:
147 - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
148 write to it.
149 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
150 - Add check_prefixes() with major cleanup on check_access().
151 - Cleanup init_env_entries() and check_prefixes().
152
153 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
154 sandbox_futils.c, libsandbox.c:
155 Remove unused 'pids file' code.
156
157 * sandbox-1.2.10 (2005/07/03)
158
159 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
160 Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
161
162 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
163 General cleanups:
164 - Remove fooling around with exit codes - we error out on presence of a log
165 anyhow.
166 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
167 appropriate there.
168
169 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
170 Cleanup the fail_nametoolong stuff a bit more.
171
172 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
173 Remove hopefully the last ld.so.preload bits we do not use anymore.
174
175 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
176 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
177 in check_syscall(). Should speed things up a bit (at least for the getcwd()
178 and long path name test it goes down to under a second, and not 10+ seconds
179 like before). Also warn if we skip checking due to the canonicalized path
180 being too long.
181
182 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
183 More comment/readability cleanups.
184
185 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
186 sandbox_futils.c, libsandbox.c:
187 Some strncpy/strncat and other cleanups.
188
189 * sandbox-1.2.9 (2005/06/09)
190
191 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
192 Move symlink hack down a bit to try and minimize on the amount of lstat()
193 calls we do.
194
195 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
196 Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
197
198 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
199 Add wrapper for access() function, bug #85413.
200
201 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
202 Use generic getcwd() implementation from uclibc - should be more portable
203 and looks a bit cleaner.
204
205 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
206 Make sure our true_* pointers are initialized to NULL, and that we check for
207 all references that they are valid.
208
209 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
210 Be default we will fail if the path name we try to canonicalize is too long.
211 This however could cause issues with some things (bug #94630 and #21766), so
212 if fail_nametoolong == 0, canonicalize() will return a null length string and
213 do not fail.
214
215 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
216 Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
217 make sure we re-export the new TMPDIR environment variable.
218
219 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
220 Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
221 by Marcus D. Hanwell <cryos@gentoo.org>.
222
223 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
224 Add /dev/console to write list, bug #38588.
225
226 * sandbox-1.2.8 (2005/05/13)
227
228 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
229 sandbox.h, sandbox_futils.c:
230 General cleanups.
231
232 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
233 sandbox.h:
234 Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
235
236 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
237 sandbox.h, sandbox_futils.c:
238 Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
239 to use TMPDIR if present in environment.
240
241 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
242 Remove sandbox_log_file from main() as its no longer used.
243
244 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
245 sandbox_futils.c:
246 Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
247 if already exported when sandbox started). Fix get_sandbox_log() and new
248 get_sandbox_debug_log() to not use already exported environment variables if
249 they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
250 SB_PATH_MAX fixes.
251
252 * sandbox-1.2.7 (2005/05/12)
253
254 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
255 sandbox_futils.c:
256 More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
257
258 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
259 Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
260 with '(null)' in it if we did not call sandbox with absolute path.
261
262 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
263 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
264 for the child.
265
266 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
267 Remove global preload_adaptable as it is no longer used.
268
269 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
270 Rewrite environment stuff to only be set when execve'ing the child process
271 to try and avoid issues like bug #91541 that causes sandbox to crash if
272 we set LD_PRELOAD sandbox side already.
273
274 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
275 Move print_sandbox_log() up to make things neater.
276
277 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
278 Remove load_preload_libs(), as its not used anymore.
279
280 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
281 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
282
283 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
284 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
285
286 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
287 Remove ld.so.preload crap - we are not going to use it again.
288
289 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
290 Fix typo in code that checks if we got valid group information, causing a
291 segmentation fault, bug #91637.
292
293 * sandbox-1.2.6 (2005/05/10)
294
295 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
296 Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
297 for some odd reason, bug #91541.
298
299 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
300 Fix typo (sizeof -> strlen).
301
302 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
303 rewrote the sbcontext caching code so it accounts for env changes since lib
304 initialization.
305
306 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
307 We create libctest.c via configure, so no need to keep it around. Do some
308 cleanup related to libctest.c and libctest during configure.
309
310 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
311 Add rename support of symlinks pointing to protected files/directories.
312
313 * sandbox-1.2.5 (2005/05/04)
314
315 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
316 sandbox.bashrc:
317 Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
318 already set, init of the env vars fails for some reason, so do this later on,
319 and do not warn (bug #91431).
320
321 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
322 sandbox.bashrc:
323 Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
324
325 * sandbox-1.2.4 (2005/05/03)
326
327 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
328 Do not init the env entries with each call, as it creates too many calls to
329 lstat, etc. Should speedup things a bit, bug #91040.
330
331 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
332 Add /dev/pty to default write list. Noticed by Morfic.
333
334 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
335 sandbox.h:
336 uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
337 exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
338
339 * sandbox-1.2.3 (2005/04/29)
340
341 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
342 Do not check for (*&#$(* CXX or F77.
343
344 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
345 Do not append '/' to pathname in filter_path() if it already ends with it.
346
347 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
348 With az's help, clean up autotools to work with cross-compiling.
349
350 * sandbox-1.2.2 (2005/04/28)
351
352 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
353 Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
354 have issues; bug #90592.
355
356 * sandbox-1.2.1 (2005/04/23)
357
358 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
359 getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
360 Make sure all functions used in libsandbox.c is declared static. Define
361 SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
362 linking with its object. Hopefully this will fix bug #90153.
363
364 * sandbox-1.2 (2005/04/23)
365
366 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
367 Allow lchown a symlink in write-allowed path pointing to write-denied
368 target.
369
370 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
371 Also show resolved symlink names in the log.
372
373 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
374 Seems -nostdlib was the problem with the constructor/destructor - remove it
375 from Makefile.am, and change the constructor/destructor names again.
376
377 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
378 Also rename the _init() and _fini() declarations.
379
380 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
381 Fixup the constructor/destructor function names again (they should be _init()
382 and _fini() it seems, and not being called caused sandbox_lib_path to be
383 unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
384 Add both the path in given SANDBOX_x variable, as well as its symlink
385 resolved path in init_env_entries(). Modify filter_path() to be able to
386 resolve paths without resolving symlinks, as well as to be able to resolve
387 symlinks. Fix a possible segfault in check_access(). Add symlink resolving
388 to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
389 for bug #31019 cause access violations if we try to remove a symlink that is
390 not in protected path, but points to a protected path. Fix a memory leak in
391 sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
392 (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
393 (pid_string was uninitialized). General syntax cleanups.
394
395 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
396 infamous "pids file is not a regular file" w/out newline bug.
397
398 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
399 Correct libc_version path detection, since it was screwing up if libdir !=
400 "/lib/".
401
402 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
403 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
404
405 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
406 Fix symbols.in not added to dist.
407
408 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
409 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
410 White space fixes.
411
412 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
413 configure.in, getcwd.c, libsandbox.c, symbols.in:
414 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
415 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
416 for glibc and other libc's that use this. Update libsandbox.c to use these
417 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
418 process unset it.
419
420 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
421 killed off _init and _fini in favor of
422 void __attribute__ ((constructor)) init_func and
423 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
424
425 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
426 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
427 having the hick-ups.
428
429 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
430 Makefile.am: Fixed compilation.
431
432 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
433 Gutted the bugger so it stops checking for a c++ and fortran compiler.
434 Do *not* regenerate aclocal.m4 for making a release until a better
435 solution is created.
436
437 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
438 Removal of more hardcoded paths.
439
440 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
441 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
442
443 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
444 Sandbox is now autotooled, create-localdecls needs to be killed and the code
445 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
446 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
447 To get to a point of testing, automake && autoconf; created requisite files w/
448 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
449 /lib and /usr/lib/portage/bin.
450
451 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
452 closing out bug #70225, potential overflow of the sandbox_pids_file var.
453
454 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
455 (think it was at least) allows intermixing of code and data segments. bug #70351
456 should be fixed by this.
457
458 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
459 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
460
461 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
462 Seth Robertson that tracked down all adjuct flags for read operations that
463 do not invoke a write operation.
464
465 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
466 Another fix from jstubbs regarding a free() on a stack variable for the
467 environment -- tracking now prevents extraneous free()'s segfault.
468
469 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
470 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
471 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
472 Also remove the errno = ESUCCESS settings as documentation points out that
473 a library isn't allowed to do that.
474
475 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
476 file_security_check() function to check random potential exploits on files
477 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
478 the 'system-crippling' exploits (bug 21923) and catches a few other
479 potential problems.
480
481 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
482 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
483
484 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
485 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
486 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
487
488 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
489 Fix permissions and group of pids file and logs. Permissions should be 0664
490 and group should be 'portage'. Bug #34260.
491
492 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
493 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
494 to the real execve (in our execve wrapper). Seems that on some arches (sparc
495 among others) do not allow us to tamper with the readonly copy passed to
496 execve, so pass our own copy of the environment. Bug #42290.
497
498 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
499 Changed tail to head and added a notice about duration of glibc check.
500
501 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
502 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
503 as there isn't a guarentee that it is dynamic.
504
505 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
506 If 'file' passed to before_syscall(const char *func, const char *file) is
507 invalid, we should set errno to ENOENT, and not EINVAL. This should
508 close bug #32238.
509
510 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
511 Fix a bug that occurs mainly on 64bit arch, where the file passed to
512 the functions we wrap, is invalid, and then cause canonicalize to pass
513 garbage to before_syscall(), thanks to great detective work from
514 Andrea Luzzardi <al@sig11.org> (bug #29846).
515
516 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
517 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
518
519 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
520 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
521 only checked the destination patch, and not the source, so we could move
522 a protected file to a unprotected directory, and then delete/modify it.
523 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
524
525 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
526 Added python2.3 to the predict section/variable.
527
528 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
529 sandbox.h, sandbox_futils.c :
530 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
531 it is not set, it will revert to its old value.
532
533 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
534 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
535 rather than failing with a violation, bug #29748.
536
537 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
538 Fix canonicalize() to ignore calls with path = "".
539
540 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
541 sandbox_futils.c, canonicalize.c :
542 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
543 call handled strings larger than PATH_MAX (bug #21766). It however does not
544 work the same on 2.4 kernels.
545
546 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
547 do not need the system call. We use the default getcwd() function via a
548 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
549 means the current directory was removed, OR that the the system call for
550 getcwd failed (curious is that it do not fail and return NULL or set
551 errno, but rather just truncate the retured directory - usually from the
552 start), and if so, we use the generic getcwd() function (__egetcwd). Note
553 that we do not use the generic version all the time, as it calls lstat()
554 a great number of times, and performance degrade much.
555
556 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
557 libsandbox.c :
558 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
559
560 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
561 create-localdecls :
562 When checking path names of files accessed, we need to canonicalize it, else
563 it may be a symlink in a 'write allowed' directory pointing to a file in a
564 directory we should not have write access to.
565
566 With something like coreutils-5.0, we have two problems:
567 1) One of the tests checks if getcwd() can return a path longer than
568 PATH_MAX. This test then tries to create a dir which even while
569 created local (mkdir("conftest2")), it ends up being resolved with
570 a name that is much larger than PATH_MAX. The problem now is that
571 canonicalize() have undefined behaviour when the path was too long
572 (returned wrongly truncated paths, etc), and pass the wrong path to
573 before_syscall() (causing the bogus sandbox violations).
574 2) The ecanonicalize() function we used, along with the canonicalize()
575 function did not support longer than PATH_MAX. This is partly a
576 cause for 1), but the error checking (rather lack of it) of calls
577 to erealpath() in canonicalize() was the prime reason for 1).
578
579 As we do not use this canonicalized name to call the function, we resolve this
580 by fixing canonicalize() to do better error checking, and ecanonicalize() as
581 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
582 While they will resolve paths properly now, and can check if a write/read is
583 allowed, the functions called from the sandboxed environment will still work
584 as expected.
585
586 This should resolve bug #21766.
587
588 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
589 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
590 it (bug #16298).
591
592 Problem is that for some reason locale fopen's locale.alias with mode "rm".
593
594 -------------------------------------------------------
595 nosferatu root # grep fopen locale.log
596 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
597 nosferatu root #
598 --------------------------------------------------------
599
600 I checked the source of locale, but it have fopen with mode 'r', so
601 not sure where the "rm" mode comes from. Anyhow, changed the check in
602 before_syscall_open_char() to also see mode "rm" as readonly.
603
604 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
605
606 Add glibc-2.3 support.
607
608 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
609
610 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
611 operations releated to preload, as well as only try to modify ld.so.preload
612 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
613 not using ld.so.preload. Fix to not write this instance of sandbox's pid
614 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
615
616 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
617
618 Changed the LD to CC for hppa.
619
620 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
621
622 Killed the previous changes I made.
623
624 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
625
626 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
627
628 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
629
630 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
631
632 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
633
634 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
635 for this fix.
636
637 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
638
639 sandbox_futils defined a dirname() function that was masking the same
640 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
641 '/usr/lib/portage/bi/'). Fixed function to return expected results and
642 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
643 11231.
644
645 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
646
647 Fix a segfault in libsandbox.c if canonicalize() was called with
648 first parameter = NULL.
649
650 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
651
652 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
653 cleanup() for this.
654
655 Change cleanup() in sandbox.c not to exit with fail status if
656 the pidsfile is missing. We really should still display sandbox
657 violations if they occured.
658
659 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
660
661 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
662 the last sandbox running.
663
664 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
665
666 Major cleanups to mainly libsandbox.c again.
667
668 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
669
670 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
671 parties involved should please contact me so that we can fix it.
672
673 Add opendir wrapper to libsandbox.c.
674
675 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
676
677 Do some more cleanups to ecanonicalize(), as it dropped filenames in
678 rare cases (after my symlink cleanups), and caused glibc to bork.
679 These fixes went into canonicalize.c.
680
681 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
682
683 Fix spawn_shell() and main() in sandbox.c to properly return fail
684 status.
685
686 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
687
688 The new canonicalize() function in libsandbox.c also resolved symlinks,
689 which caused on cleaning sandbox errors if the symlink pointed to a
690 file in the live root. Ripped out canonicalize() and realpath() from
691 glibc; removed the symlink stuff, and changed them to ecanonicalize()
692 and erealpath().
693
694 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
695
696 Ripped out all the wrappers, and implemented those of InstallWatch.
697 Losts of cleanups and bugfixes. Implement a execve that forces
698 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
699 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
700 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
701 parts; it now have an install target.
702
703 Reformat the whole thing to look somewhat like the reworked sandbox.c
704 and new sandbox.h and sandbox_futils.c from:
705
706 Brad House <brad@mainstreetsoftworks.com>.
707
708 Additional Copyrights now due to the InstallWatch code:
709
710 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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