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Revision 194 - (show annotations) (download)
Thu Dec 1 10:58:54 2005 UTC (8 years, 4 months ago) by azarah
File size: 31111 byte(s)
Use egetcwd() in sandbox.c.
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 28 Nov 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, sandbox.c,
36 sandbox_fdutils.c:
37
38 Detect if we on 64bit arch automatically.
39
40 Update contact email. Fix quoting.
41
42 Revert 64bit arch test, as we should build the 32bit version without full
43 path checking as well, and add --enable-multilib switch to configure.
44
45 * sandbox-1.2.14 (2005/11/28)
46
47 28 Nov 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
48 sandbox.c, sandbox.h, sandbox.bashrc:
49
50 Check generic getcwd()'s return as well for validity, bug #101728.
51
52 Cleanup environ variables.
53
54 Rather check SANDBOX_ACTIVE if we are already running. Set SANDBOX_ACTIVE
55 to readonly in sandbox.bashrc.
56
57 Make sure we use our bashrc.
58
59 01 Nov 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
60
61 Do not pass mode to true_open and true_open64 if not needed. Should fix a
62 segfault in some cases.
63
64 * sandbox-1.2.13 (2005/09/12)
65
66 12 Sep 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, libsandbox.c:
67
68 Do not handle adding working directory to SANDBOX_WRITE, as portage does it
69 itself.
70
71 Make libsb_fini() do cleanup a bit more complete just in case we get another
72 uClibc 'call preloaded library fini before that of app' issue ... probably
73 will not help much, but we try.
74
75 04 Sep 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
76
77 Also allow symlink() system call to operate on a symlink in a writable path
78 that points to non-writable path, bug #104711.
79
80 * sandbox-1.2.12 (2005/08/05)
81
82 05 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
83 sandbox.h:
84
85 Do not give an access violation if the access() system call do not have
86 write/read access - it does not actually modify, so we only need to return
87 not being able to write/read. Noted by Andres Loeh <kosmikus@gentoo.org>,
88 bug #101433.
89
90 If we are called from the command line, do not care about PORTAGE_TMPDIR,
91 and make the current directory the work directory. Also rename the variable
92 portage_tmp_dir to work_dir.
93
94 Remove the tmp_dir variable - we do not need it.
95
96 Improve error handling for get_sandbox_*_envvar() functions.
97
98 01 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
99
100 Still do normal log if debugging is requested.
101
102 Add support for SANDBOX_VERBOSE (enabled by default). Adjust SANDBOX_DEBUG
103 to only enable if equal to "1" or "yes".
104
105 Add /dev/tts to write permit, bug #42809.
106
107 27 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
108 sandbox_futils.c:
109
110 Do not resolve symlinks in PORTAGE_TMPDIR in sandbox .. we will handle that
111 in libsandbox .. bug #100309.
112
113 22 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h:
114
115 Print all logging to stderr, bug #90343, comment #15, by Zac Medico.
116
117 * sandbox-1.2.11 (2005/07/14)
118
119 14 July 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
120 Fix getcwd, bug #98419.
121
122 08 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c,
123 libsandbox.c:
124 - Try to cleanup and make error handling/printing consistent.
125 - Remove old logs if present and conflicting with current.
126 - Fix compile error with previous change, and return rather then exit().
127
128 07 July 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
129 sandbox.h, sandbox_futils.c:
130 - Fix possible segfault in env init code.
131 - Major cleanup of sandbox_futils.c. Removed most of the functions as we now
132 write to /var/log/sandbox/, so in theory do not need all that.
133 - Redo the interface of the get_* functions so that we do not leak memory.
134 - Remove sandbox_dir and co - we are not using it anymore.
135 - Remove unused includes and variables.
136 - Only declare functions in sandbox_futils.c that are used in libsandbox.c when
137 OUTSIDE_LIBSANDBOX is not defined.
138 - Cleanup access/log printing. Make access printing honour NOCOLOR. Fix log
139 printing's last line not honouring NOCOLOR.
140
141 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
142 libsandbox.c:
143 - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
144 write to it.
145 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
146 - Add check_prefixes() with major cleanup on check_access().
147 - Cleanup init_env_entries() and check_prefixes().
148
149 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
150 sandbox_futils.c, libsandbox.c:
151 Remove unused 'pids file' code.
152
153 * sandbox-1.2.10 (2005/07/03)
154
155 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
156 Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
157
158 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
159 General cleanups:
160 - Remove fooling around with exit codes - we error out on presence of a log
161 anyhow.
162 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
163 appropriate there.
164
165 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
166 Cleanup the fail_nametoolong stuff a bit more.
167
168 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
169 Remove hopefully the last ld.so.preload bits we do not use anymore.
170
171 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
172 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
173 in check_syscall(). Should speed things up a bit (at least for the getcwd()
174 and long path name test it goes down to under a second, and not 10+ seconds
175 like before). Also warn if we skip checking due to the canonicalized path
176 being too long.
177
178 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
179 More comment/readability cleanups.
180
181 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
182 sandbox_futils.c, libsandbox.c:
183 Some strncpy/strncat and other cleanups.
184
185 * sandbox-1.2.9 (2005/06/09)
186
187 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
188 Move symlink hack down a bit to try and minimize on the amount of lstat()
189 calls we do.
190
191 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
192 Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
193
194 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
195 Add wrapper for access() function, bug #85413.
196
197 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
198 Use generic getcwd() implementation from uclibc - should be more portable
199 and looks a bit cleaner.
200
201 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
202 Make sure our true_* pointers are initialized to NULL, and that we check for
203 all references that they are valid.
204
205 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
206 Be default we will fail if the path name we try to canonicalize is too long.
207 This however could cause issues with some things (bug #94630 and #21766), so
208 if fail_nametoolong == 0, canonicalize() will return a null length string and
209 do not fail.
210
211 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
212 Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
213 make sure we re-export the new TMPDIR environment variable.
214
215 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
216 Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
217 by Marcus D. Hanwell <cryos@gentoo.org>.
218
219 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
220 Add /dev/console to write list, bug #38588.
221
222 * sandbox-1.2.8 (2005/05/13)
223
224 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
225 sandbox.h, sandbox_futils.c:
226 General cleanups.
227
228 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
229 sandbox.h:
230 Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
231
232 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
233 sandbox.h, sandbox_futils.c:
234 Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
235 to use TMPDIR if present in environment.
236
237 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
238 Remove sandbox_log_file from main() as its no longer used.
239
240 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
241 sandbox_futils.c:
242 Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
243 if already exported when sandbox started). Fix get_sandbox_log() and new
244 get_sandbox_debug_log() to not use already exported environment variables if
245 they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
246 SB_PATH_MAX fixes.
247
248 * sandbox-1.2.7 (2005/05/12)
249
250 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
251 sandbox_futils.c:
252 More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
253
254 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
255 Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
256 with '(null)' in it if we did not call sandbox with absolute path.
257
258 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
259 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
260 for the child.
261
262 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
263 Remove global preload_adaptable as it is no longer used.
264
265 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
266 Rewrite environment stuff to only be set when execve'ing the child process
267 to try and avoid issues like bug #91541 that causes sandbox to crash if
268 we set LD_PRELOAD sandbox side already.
269
270 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
271 Move print_sandbox_log() up to make things neater.
272
273 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
274 Remove load_preload_libs(), as its not used anymore.
275
276 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
277 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
278
279 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
280 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
281
282 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
283 Remove ld.so.preload crap - we are not going to use it again.
284
285 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
286 Fix typo in code that checks if we got valid group information, causing a
287 segmentation fault, bug #91637.
288
289 * sandbox-1.2.6 (2005/05/10)
290
291 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
292 Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
293 for some odd reason, bug #91541.
294
295 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
296 Fix typo (sizeof -> strlen).
297
298 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
299 rewrote the sbcontext caching code so it accounts for env changes since lib
300 initialization.
301
302 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
303 We create libctest.c via configure, so no need to keep it around. Do some
304 cleanup related to libctest.c and libctest during configure.
305
306 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
307 Add rename support of symlinks pointing to protected files/directories.
308
309 * sandbox-1.2.5 (2005/05/04)
310
311 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
312 sandbox.bashrc:
313 Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
314 already set, init of the env vars fails for some reason, so do this later on,
315 and do not warn (bug #91431).
316
317 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
318 sandbox.bashrc:
319 Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
320
321 * sandbox-1.2.4 (2005/05/03)
322
323 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
324 Do not init the env entries with each call, as it creates too many calls to
325 lstat, etc. Should speedup things a bit, bug #91040.
326
327 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
328 Add /dev/pty to default write list. Noticed by Morfic.
329
330 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
331 sandbox.h:
332 uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
333 exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
334
335 * sandbox-1.2.3 (2005/04/29)
336
337 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
338 Do not check for (*&#$(* CXX or F77.
339
340 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
341 Do not append '/' to pathname in filter_path() if it already ends with it.
342
343 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
344 With az's help, clean up autotools to work with cross-compiling.
345
346 * sandbox-1.2.2 (2005/04/28)
347
348 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
349 Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
350 have issues; bug #90592.
351
352 * sandbox-1.2.1 (2005/04/23)
353
354 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
355 getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
356 Make sure all functions used in libsandbox.c is declared static. Define
357 SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
358 linking with its object. Hopefully this will fix bug #90153.
359
360 * sandbox-1.2 (2005/04/23)
361
362 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
363 Allow lchown a symlink in write-allowed path pointing to write-denied
364 target.
365
366 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
367 Also show resolved symlink names in the log.
368
369 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
370 Seems -nostdlib was the problem with the constructor/destructor - remove it
371 from Makefile.am, and change the constructor/destructor names again.
372
373 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
374 Also rename the _init() and _fini() declarations.
375
376 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
377 Fixup the constructor/destructor function names again (they should be _init()
378 and _fini() it seems, and not being called caused sandbox_lib_path to be
379 unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
380 Add both the path in given SANDBOX_x variable, as well as its symlink
381 resolved path in init_env_entries(). Modify filter_path() to be able to
382 resolve paths without resolving symlinks, as well as to be able to resolve
383 symlinks. Fix a possible segfault in check_access(). Add symlink resolving
384 to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
385 for bug #31019 cause access violations if we try to remove a symlink that is
386 not in protected path, but points to a protected path. Fix a memory leak in
387 sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
388 (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
389 (pid_string was uninitialized). General syntax cleanups.
390
391 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
392 infamous "pids file is not a regular file" w/out newline bug.
393
394 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
395 Correct libc_version path detection, since it was screwing up if libdir !=
396 "/lib/".
397
398 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
399 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
400
401 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
402 Fix symbols.in not added to dist.
403
404 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
405 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
406 White space fixes.
407
408 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
409 configure.in, getcwd.c, libsandbox.c, symbols.in:
410 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
411 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
412 for glibc and other libc's that use this. Update libsandbox.c to use these
413 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
414 process unset it.
415
416 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
417 killed off _init and _fini in favor of
418 void __attribute__ ((constructor)) init_func and
419 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
420
421 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
422 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
423 having the hick-ups.
424
425 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
426 Makefile.am: Fixed compilation.
427
428 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
429 Gutted the bugger so it stops checking for a c++ and fortran compiler.
430 Do *not* regenerate aclocal.m4 for making a release until a better
431 solution is created.
432
433 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
434 Removal of more hardcoded paths.
435
436 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
437 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
438
439 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
440 Sandbox is now autotooled, create-localdecls needs to be killed and the code
441 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
442 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
443 To get to a point of testing, automake && autoconf; created requisite files w/
444 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
445 /lib and /usr/lib/portage/bin.
446
447 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
448 closing out bug #70225, potential overflow of the sandbox_pids_file var.
449
450 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
451 (think it was at least) allows intermixing of code and data segments. bug #70351
452 should be fixed by this.
453
454 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
455 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
456
457 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
458 Seth Robertson that tracked down all adjuct flags for read operations that
459 do not invoke a write operation.
460
461 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
462 Another fix from jstubbs regarding a free() on a stack variable for the
463 environment -- tracking now prevents extraneous free()'s segfault.
464
465 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
466 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
467 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
468 Also remove the errno = ESUCCESS settings as documentation points out that
469 a library isn't allowed to do that.
470
471 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
472 file_security_check() function to check random potential exploits on files
473 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
474 the 'system-crippling' exploits (bug 21923) and catches a few other
475 potential problems.
476
477 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
478 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
479
480 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
481 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
482 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
483
484 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
485 Fix permissions and group of pids file and logs. Permissions should be 0664
486 and group should be 'portage'. Bug #34260.
487
488 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
489 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
490 to the real execve (in our execve wrapper). Seems that on some arches (sparc
491 among others) do not allow us to tamper with the readonly copy passed to
492 execve, so pass our own copy of the environment. Bug #42290.
493
494 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
495 Changed tail to head and added a notice about duration of glibc check.
496
497 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
498 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
499 as there isn't a guarentee that it is dynamic.
500
501 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
502 If 'file' passed to before_syscall(const char *func, const char *file) is
503 invalid, we should set errno to ENOENT, and not EINVAL. This should
504 close bug #32238.
505
506 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
507 Fix a bug that occurs mainly on 64bit arch, where the file passed to
508 the functions we wrap, is invalid, and then cause canonicalize to pass
509 garbage to before_syscall(), thanks to great detective work from
510 Andrea Luzzardi <al@sig11.org> (bug #29846).
511
512 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
513 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
514
515 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
516 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
517 only checked the destination patch, and not the source, so we could move
518 a protected file to a unprotected directory, and then delete/modify it.
519 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
520
521 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
522 Added python2.3 to the predict section/variable.
523
524 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
525 sandbox.h, sandbox_futils.c :
526 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
527 it is not set, it will revert to its old value.
528
529 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
530 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
531 rather than failing with a violation, bug #29748.
532
533 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
534 Fix canonicalize() to ignore calls with path = "".
535
536 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
537 sandbox_futils.c, canonicalize.c :
538 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
539 call handled strings larger than PATH_MAX (bug #21766). It however does not
540 work the same on 2.4 kernels.
541
542 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
543 do not need the system call. We use the default getcwd() function via a
544 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
545 means the current directory was removed, OR that the the system call for
546 getcwd failed (curious is that it do not fail and return NULL or set
547 errno, but rather just truncate the retured directory - usually from the
548 start), and if so, we use the generic getcwd() function (__egetcwd). Note
549 that we do not use the generic version all the time, as it calls lstat()
550 a great number of times, and performance degrade much.
551
552 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
553 libsandbox.c :
554 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
555
556 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
557 create-localdecls :
558 When checking path names of files accessed, we need to canonicalize it, else
559 it may be a symlink in a 'write allowed' directory pointing to a file in a
560 directory we should not have write access to.
561
562 With something like coreutils-5.0, we have two problems:
563 1) One of the tests checks if getcwd() can return a path longer than
564 PATH_MAX. This test then tries to create a dir which even while
565 created local (mkdir("conftest2")), it ends up being resolved with
566 a name that is much larger than PATH_MAX. The problem now is that
567 canonicalize() have undefined behaviour when the path was too long
568 (returned wrongly truncated paths, etc), and pass the wrong path to
569 before_syscall() (causing the bogus sandbox violations).
570 2) The ecanonicalize() function we used, along with the canonicalize()
571 function did not support longer than PATH_MAX. This is partly a
572 cause for 1), but the error checking (rather lack of it) of calls
573 to erealpath() in canonicalize() was the prime reason for 1).
574
575 As we do not use this canonicalized name to call the function, we resolve this
576 by fixing canonicalize() to do better error checking, and ecanonicalize() as
577 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
578 While they will resolve paths properly now, and can check if a write/read is
579 allowed, the functions called from the sandboxed environment will still work
580 as expected.
581
582 This should resolve bug #21766.
583
584 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
585 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
586 it (bug #16298).
587
588 Problem is that for some reason locale fopen's locale.alias with mode "rm".
589
590 -------------------------------------------------------
591 nosferatu root # grep fopen locale.log
592 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
593 nosferatu root #
594 --------------------------------------------------------
595
596 I checked the source of locale, but it have fopen with mode 'r', so
597 not sure where the "rm" mode comes from. Anyhow, changed the check in
598 before_syscall_open_char() to also see mode "rm" as readonly.
599
600 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
601
602 Add glibc-2.3 support.
603
604 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
605
606 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
607 operations releated to preload, as well as only try to modify ld.so.preload
608 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
609 not using ld.so.preload. Fix to not write this instance of sandbox's pid
610 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
611
612 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
613
614 Changed the LD to CC for hppa.
615
616 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
617
618 Killed the previous changes I made.
619
620 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
621
622 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
623
624 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
625
626 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
627
628 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
629
630 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
631 for this fix.
632
633 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
634
635 sandbox_futils defined a dirname() function that was masking the same
636 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
637 '/usr/lib/portage/bi/'). Fixed function to return expected results and
638 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
639 11231.
640
641 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
642
643 Fix a segfault in libsandbox.c if canonicalize() was called with
644 first parameter = NULL.
645
646 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
647
648 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
649 cleanup() for this.
650
651 Change cleanup() in sandbox.c not to exit with fail status if
652 the pidsfile is missing. We really should still display sandbox
653 violations if they occured.
654
655 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
656
657 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
658 the last sandbox running.
659
660 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
661
662 Major cleanups to mainly libsandbox.c again.
663
664 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
665
666 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
667 parties involved should please contact me so that we can fix it.
668
669 Add opendir wrapper to libsandbox.c.
670
671 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
672
673 Do some more cleanups to ecanonicalize(), as it dropped filenames in
674 rare cases (after my symlink cleanups), and caused glibc to bork.
675 These fixes went into canonicalize.c.
676
677 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
678
679 Fix spawn_shell() and main() in sandbox.c to properly return fail
680 status.
681
682 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
683
684 The new canonicalize() function in libsandbox.c also resolved symlinks,
685 which caused on cleaning sandbox errors if the symlink pointed to a
686 file in the live root. Ripped out canonicalize() and realpath() from
687 glibc; removed the symlink stuff, and changed them to ecanonicalize()
688 and erealpath().
689
690 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
691
692 Ripped out all the wrappers, and implemented those of InstallWatch.
693 Losts of cleanups and bugfixes. Implement a execve that forces
694 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
695 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
696 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
697 parts; it now have an install target.
698
699 Reformat the whole thing to look somewhat like the reworked sandbox.c
700 and new sandbox.h and sandbox_futils.c from:
701
702 Brad House <brad@mainstreetsoftworks.com>.
703
704 Additional Copyrights now due to the InstallWatch code:
705
706 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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