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Revision 146 - (hide annotations) (download)
Fri Jul 8 15:07:50 2005 UTC (9 years, 2 months ago) by azarah
File size: 26945 byte(s)
Remove old logs if present and conflicting with current.
1 ferringb 2 # ChangeLog for Path Sandbox
2 vapier 53 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 ferringb 2 # $Header$
4    
5 azarah 145 08 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c,
6     libsandbox.c:
7 azarah 146 - Try to cleanup and make error handling/printing consistent.
8     - Remove old logs if present and conflicting with current.
9 azarah 145
10 azarah 139 07 July 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
11     sandbox.h, sandbox_futils.c:
12     - Fix possible segfault in env init code.
13     - Major cleanup of sandbox_futils.c. Removed most of the functions as we now
14     write to /var/log/sandbox/, so in theory do not need all that.
15 azarah 140 - Redo the interface of the get_* functions so that we do not leak memory.
16 azarah 141 - Remove sandbox_dir and co - we are not using it anymore.
17 azarah 142 - Remove unused includes and variables.
18 azarah 143 - Only declare functions in sandbox_futils.c that are used in libsandbox.c when
19     OUTSIDE_LIBSANDBOX is not defined.
20 azarah 144 - Cleanup access/log printing. Make access printing honour NOCOLOR. Fix log
21     printing's last line not honouring NOCOLOR.
22 azarah 138
23 azarah 134 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
24     libsandbox.c:
25     - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
26     write to it.
27 azarah 135 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
28 azarah 136 - Add check_prefixes() with major cleanup on check_access().
29 azarah 137 - Cleanup init_env_entries() and check_prefixes().
30 azarah 134
31 azarah 133 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
32     sandbox_futils.c, libsandbox.c:
33     Remove unused 'pids file' code.
34    
35 azarah 128 * sandbox-1.2.10 (2005/07/03)
36    
37 azarah 126 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
38     Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
39    
40 azarah 123 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
41     General cleanups:
42     - Remove fooling around with exit codes - we error out on presence of a log
43     anyhow.
44 azarah 124 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
45     appropriate there.
46 azarah 123
47 azarah 121 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
48     Cleanup the fail_nametoolong stuff a bit more.
49    
50 azarah 118 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
51 azarah 120 Remove hopefully the last ld.so.preload bits we do not use anymore.
52    
53     11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
54 azarah 119 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
55     in check_syscall(). Should speed things up a bit (at least for the getcwd()
56     and long path name test it goes down to under a second, and not 10+ seconds
57     like before). Also warn if we skip checking due to the canonicalized path
58     being too long.
59    
60     11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
61 azarah 118 More comment/readability cleanups.
62    
63 azarah 117 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
64     sandbox_futils.c, libsandbox.c:
65     Some strncpy/strncat and other cleanups.
66    
67 azarah 115 * sandbox-1.2.9 (2005/06/09)
68    
69 azarah 114 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
70     Move symlink hack down a bit to try and minimize on the amount of lstat()
71     calls we do.
72    
73 azarah 113 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
74     Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
75    
76 azarah 112 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
77     Add wrapper for access() function, bug #85413.
78    
79 azarah 111 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
80     Use generic getcwd() implementation from uclibc - should be more portable
81     and looks a bit cleaner.
82    
83 azarah 110 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
84     Make sure our true_* pointers are initialized to NULL, and that we check for
85     all references that they are valid.
86    
87 azarah 109 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
88     Be default we will fail if the path name we try to canonicalize is too long.
89     This however could cause issues with some things (bug #94630 and #21766), so
90     if fail_nametoolong == 0, canonicalize() will return a null length string and
91     do not fail.
92    
93 azarah 108 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
94     Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
95     make sure we re-export the new TMPDIR environment variable.
96    
97 azarah 106 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
98     Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
99     by Marcus D. Hanwell <cryos@gentoo.org>.
100    
101 azarah 105 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
102     Add /dev/console to write list, bug #38588.
103    
104 azarah 102 * sandbox-1.2.8 (2005/05/13)
105    
106 azarah 99 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
107 azarah 101 sandbox.h, sandbox_futils.c:
108     General cleanups.
109    
110     13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
111 azarah 100 sandbox.h:
112     Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
113    
114     13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
115 azarah 99 sandbox.h, sandbox_futils.c:
116     Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
117     to use TMPDIR if present in environment.
118    
119 azarah 98 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
120     Remove sandbox_log_file from main() as its no longer used.
121    
122 azarah 97 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
123     sandbox_futils.c:
124     Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
125     if already exported when sandbox started). Fix get_sandbox_log() and new
126     get_sandbox_debug_log() to not use already exported environment variables if
127     they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
128     SB_PATH_MAX fixes.
129    
130 azarah 94 * sandbox-1.2.7 (2005/05/12)
131    
132 azarah 93 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
133     sandbox_futils.c:
134     More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
135    
136 azarah 92 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
137     Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
138     with '(null)' in it if we did not call sandbox with absolute path.
139    
140 azarah 89 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
141 azarah 91 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
142     for the child.
143    
144     12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
145 azarah 90 Remove global preload_adaptable as it is no longer used.
146    
147     12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
148 azarah 89 Rewrite environment stuff to only be set when execve'ing the child process
149     to try and avoid issues like bug #91541 that causes sandbox to crash if
150     we set LD_PRELOAD sandbox side already.
151    
152 azarah 87 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
153 azarah 88 Move print_sandbox_log() up to make things neater.
154    
155     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
156 azarah 87 Remove load_preload_libs(), as its not used anymore.
157    
158 azarah 83 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
159 azarah 86 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
160    
161     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
162 azarah 84 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
163    
164     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
165 azarah 83 Remove ld.so.preload crap - we are not going to use it again.
166    
167 azarah 82 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
168     Fix typo in code that checks if we got valid group information, causing a
169     segmentation fault, bug #91637.
170    
171 azarah 79 * sandbox-1.2.6 (2005/05/10)
172    
173 azarah 78 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
174     Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
175     for some odd reason, bug #91541.
176    
177 azarah 77 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
178     Fix typo (sizeof -> strlen).
179    
180 ferringb 76 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
181     rewrote the sbcontext caching code so it accounts for env changes since lib
182     initialization.
183    
184 azarah 75 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
185     We create libctest.c via configure, so no need to keep it around. Do some
186     cleanup related to libctest.c and libctest during configure.
187    
188 azarah 74 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
189     Add rename support of symlinks pointing to protected files/directories.
190    
191 azarah 72 * sandbox-1.2.5 (2005/05/04)
192    
193 azarah 71 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
194     sandbox.bashrc:
195     Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
196     already set, init of the env vars fails for some reason, so do this later on,
197     and do not warn (bug #91431).
198    
199 azarah 70 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
200     sandbox.bashrc:
201     Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
202    
203 azarah 68 * sandbox-1.2.4 (2005/05/03)
204    
205 azarah 66 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
206     Do not init the env entries with each call, as it creates too many calls to
207 azarah 67 lstat, etc. Should speedup things a bit, bug #91040.
208 azarah 66
209 azarah 65 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
210     Add /dev/pty to default write list. Noticed by Morfic.
211    
212 vapier 62 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
213     sandbox.h:
214     uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
215     exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
216    
217 azarah 59 * sandbox-1.2.3 (2005/04/29)
218    
219 azarah 56 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
220     Do not check for (*&#$(* CXX or F77.
221    
222 azarah 54 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
223     Do not append '/' to pathname in filter_path() if it already ends with it.
224    
225 vapier 53 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
226     With az's help, clean up autotools to work with cross-compiling.
227    
228 azarah 59 * sandbox-1.2.2 (2005/04/28)
229 azarah 48
230 azarah 47 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
231     Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
232     have issues; bug #90592.
233    
234 azarah 59 * sandbox-1.2.1 (2005/04/23)
235 azarah 44
236 azarah 43 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
237     getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
238     Make sure all functions used in libsandbox.c is declared static. Define
239     SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
240     linking with its object. Hopefully this will fix bug #90153.
241    
242 azarah 59 * sandbox-1.2 (2005/04/23)
243 azarah 46
244 azarah 40 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
245     Allow lchown a symlink in write-allowed path pointing to write-denied
246     target.
247    
248 genone 39 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
249     Also show resolved symlink names in the log.
250    
251 azarah 37 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
252     Seems -nostdlib was the problem with the constructor/destructor - remove it
253     from Makefile.am, and change the constructor/destructor names again.
254    
255 azarah 36 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
256     Also rename the _init() and _fini() declarations.
257    
258 azarah 35 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
259     Fixup the constructor/destructor function names again (they should be _init()
260     and _fini() it seems, and not being called caused sandbox_lib_path to be
261     unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
262     Add both the path in given SANDBOX_x variable, as well as its symlink
263     resolved path in init_env_entries(). Modify filter_path() to be able to
264     resolve paths without resolving symlinks, as well as to be able to resolve
265     symlinks. Fix a possible segfault in check_access(). Add symlink resolving
266     to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
267     for bug #31019 cause access violations if we try to remove a symlink that is
268     not in protected path, but points to a protected path. Fix a memory leak in
269     sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
270     (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
271     (pid_string was uninitialized). General syntax cleanups.
272    
273 ferringb 34 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
274     infamous "pids file is not a regular file" w/out newline bug.
275    
276 ferringb 33 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
277     Correct libc_version path detection, since it was screwing up if libdir !=
278     "/lib/".
279    
280     02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
281 azarah 32 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
282    
283 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
284 azarah 31 Fix symbols.in not added to dist.
285    
286 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
287 azarah 30 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
288     White space fixes.
289    
290 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
291 azarah 30 configure.in, getcwd.c, libsandbox.c, symbols.in:
292 azarah 29 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
293     getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
294     for glibc and other libc's that use this. Update libsandbox.c to use these
295     symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
296     process unset it.
297    
298 ferringb 33 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
299 ferringb 28 killed off _init and _fini in favor of
300     void __attribute__ ((constructor)) init_func and
301     void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
302    
303 ferringb 26 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
304     canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
305     having the hick-ups.
306    
307 ferringb 24 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
308     Makefile.am: Fixed compilation.
309    
310 ferringb 18 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
311     Gutted the bugger so it stops checking for a c++ and fortran compiler.
312     Do *not* regenerate aclocal.m4 for making a release until a better
313     solution is created.
314    
315 ferringb 16 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
316     Removal of more hardcoded paths.
317    
318 ferringb 13 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
319     sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
320    
321     19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
322 ferringb 6 Sandbox is now autotooled, create-localdecls needs to be killed and the code
323     shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
324     are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
325     To get to a point of testing, automake && autoconf; created requisite files w/
326     a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
327     /lib and /usr/lib/portage/bin.
328    
329 ferringb 2 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
330     closing out bug #70225, potential overflow of the sandbox_pids_file var.
331    
332     07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
333     (think it was at least) allows intermixing of code and data segments. bug #70351
334     should be fixed by this.
335    
336     03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
337     futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
338    
339     02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
340     Seth Robertson that tracked down all adjuct flags for read operations that
341     do not invoke a write operation.
342    
343     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
344     Another fix from jstubbs regarding a free() on a stack variable for the
345     environment -- tracking now prevents extraneous free()'s segfault.
346    
347     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
348     J. Stubbs tracked down a new bug where mkdir was failing to the patch on
349     the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
350     Also remove the errno = ESUCCESS settings as documentation points out that
351     a library isn't allowed to do that.
352    
353     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
354     file_security_check() function to check random potential exploits on files
355     that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
356     the 'system-crippling' exploits (bug 21923) and catches a few other
357     potential problems.
358    
359     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
360     32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
361    
362     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
363     bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
364     Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
365    
366     29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
367     Fix permissions and group of pids file and logs. Permissions should be 0664
368     and group should be 'portage'. Bug #34260.
369    
370     28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
371     Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
372     to the real execve (in our execve wrapper). Seems that on some arches (sparc
373     among others) do not allow us to tamper with the readonly copy passed to
374     execve, so pass our own copy of the environment. Bug #42290.
375    
376     11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
377     Changed tail to head and added a notice about duration of glibc check.
378    
379     21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
380     Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
381     as there isn't a guarentee that it is dynamic.
382    
383     02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
384     If 'file' passed to before_syscall(const char *func, const char *file) is
385     invalid, we should set errno to ENOENT, and not EINVAL. This should
386     close bug #32238.
387    
388     14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
389     Fix a bug that occurs mainly on 64bit arch, where the file passed to
390     the functions we wrap, is invalid, and then cause canonicalize to pass
391     garbage to before_syscall(), thanks to great detective work from
392     Andrea Luzzardi <al@sig11.org> (bug #29846).
393    
394     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
395     Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
396    
397     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
398     Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
399     only checked the destination patch, and not the source, so we could move
400     a protected file to a unprotected directory, and then delete/modify it.
401     Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
402    
403     12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
404     Added python2.3 to the predict section/variable.
405    
406     28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
407     sandbox.h, sandbox_futils.c :
408     Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
409     it is not set, it will revert to its old value.
410    
411     27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
412     Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
413     rather than failing with a violation, bug #29748.
414    
415     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
416     Fix canonicalize() to ignore calls with path = "".
417    
418     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
419     sandbox_futils.c, canonicalize.c :
420     Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
421     call handled strings larger than PATH_MAX (bug #21766). It however does not
422     work the same on 2.4 kernels.
423    
424     To fix, I added the posix implementation of getcwd() (from glibc cvs) that
425     do not need the system call. We use the default getcwd() function via a
426     wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
427     means the current directory was removed, OR that the the system call for
428     getcwd failed (curious is that it do not fail and return NULL or set
429     errno, but rather just truncate the retured directory - usually from the
430     start), and if so, we use the generic getcwd() function (__egetcwd). Note
431     that we do not use the generic version all the time, as it calls lstat()
432     a great number of times, and performance degrade much.
433    
434     29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
435     libsandbox.c :
436     Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
437    
438     22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
439     create-localdecls :
440     When checking path names of files accessed, we need to canonicalize it, else
441     it may be a symlink in a 'write allowed' directory pointing to a file in a
442     directory we should not have write access to.
443    
444     With something like coreutils-5.0, we have two problems:
445     1) One of the tests checks if getcwd() can return a path longer than
446     PATH_MAX. This test then tries to create a dir which even while
447     created local (mkdir("conftest2")), it ends up being resolved with
448     a name that is much larger than PATH_MAX. The problem now is that
449     canonicalize() have undefined behaviour when the path was too long
450     (returned wrongly truncated paths, etc), and pass the wrong path to
451     before_syscall() (causing the bogus sandbox violations).
452     2) The ecanonicalize() function we used, along with the canonicalize()
453     function did not support longer than PATH_MAX. This is partly a
454     cause for 1), but the error checking (rather lack of it) of calls
455     to erealpath() in canonicalize() was the prime reason for 1).
456    
457     As we do not use this canonicalized name to call the function, we resolve this
458     by fixing canonicalize() to do better error checking, and ecanonicalize() as
459     well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
460     While they will resolve paths properly now, and can check if a write/read is
461     allowed, the functions called from the sandboxed environment will still work
462     as expected.
463    
464     This should resolve bug #21766.
465    
466     06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
467     For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
468     it (bug #16298).
469    
470     Problem is that for some reason locale fopen's locale.alias with mode "rm".
471    
472     -------------------------------------------------------
473     nosferatu root # grep fopen locale.log
474     fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
475     nosferatu root #
476     --------------------------------------------------------
477    
478     I checked the source of locale, but it have fopen with mode 'r', so
479     not sure where the "rm" mode comes from. Anyhow, changed the check in
480     before_syscall_open_char() to also see mode "rm" as readonly.
481    
482     23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
483    
484     Add glibc-2.3 support.
485    
486     22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
487    
488     Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
489     operations releated to preload, as well as only try to modify ld.so.preload
490     if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
491     not using ld.so.preload. Fix to not write this instance of sandbox's pid
492     to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
493    
494     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
495    
496     Changed the LD to CC for hppa.
497    
498     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
499    
500     Killed the previous changes I made.
501    
502     17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
503    
504     Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
505    
506     09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
507    
508     Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
509    
510     16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
511    
512     Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
513     for this fix.
514    
515     4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
516    
517     sandbox_futils defined a dirname() function that was masking the same
518     function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
519     '/usr/lib/portage/bi/'). Fixed function to return expected results and
520     renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
521     11231.
522    
523     4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
524    
525     Fix a segfault in libsandbox.c if canonicalize() was called with
526     first parameter = NULL.
527    
528     1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
529    
530     Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
531     cleanup() for this.
532    
533     Change cleanup() in sandbox.c not to exit with fail status if
534     the pidsfile is missing. We really should still display sandbox
535     violations if they occured.
536    
537     31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
538    
539     Update cleanup() in sandbox.c to remove the PIDSFILE if this is
540     the last sandbox running.
541    
542     25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
543    
544     Major cleanups to mainly libsandbox.c again.
545    
546     22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
547    
548     Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
549     parties involved should please contact me so that we can fix it.
550    
551     Add opendir wrapper to libsandbox.c.
552    
553     21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
554    
555     Do some more cleanups to ecanonicalize(), as it dropped filenames in
556     rare cases (after my symlink cleanups), and caused glibc to bork.
557     These fixes went into canonicalize.c.
558    
559     20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
560    
561     Fix spawn_shell() and main() in sandbox.c to properly return fail
562     status.
563    
564     19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
565    
566     The new canonicalize() function in libsandbox.c also resolved symlinks,
567     which caused on cleaning sandbox errors if the symlink pointed to a
568     file in the live root. Ripped out canonicalize() and realpath() from
569     glibc; removed the symlink stuff, and changed them to ecanonicalize()
570     and erealpath().
571    
572     18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
573    
574     Ripped out all the wrappers, and implemented those of InstallWatch.
575     Losts of cleanups and bugfixes. Implement a execve that forces
576     $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
577     /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
578     sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
579     parts; it now have an install target.
580    
581     Reformat the whole thing to look somewhat like the reworked sandbox.c
582     and new sandbox.h and sandbox_futils.c from:
583    
584     Brad House <brad@mainstreetsoftworks.com>.
585    
586     Additional Copyrights now due to the InstallWatch code:
587    
588     Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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