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1# ChangeLog for Path Sandbox 1# ChangeLog for Path Sandbox
2# Copyright 1999-2004 Gentoo Foundation; Distributed under the GPL v2 2# Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3# $Header$ 3# $Header$
4 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
5 01 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c: 416 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
6 killed off _init and _fini in favor of 417 killed off _init and _fini in favor of
7 void __attribute__ ((constructor)) init_func and 418 void __attribute__ ((constructor)) init_func and
8 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated. 419 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
9 420
10 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c, 421 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,

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