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Revision 154 - (hide annotations) (download)
Mon Aug 1 08:08:08 2005 UTC (9 years, 1 month ago) by azarah
File size: 27724 byte(s)
Add support for SANDBOX_VERBOSE (enabled by default).  Adjust SANDBOX_DEBUG
to only enable if equal to 1 or yes.

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

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