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Revision 144 - (hide annotations) (download)
Thu Jul 7 22:58:16 2005 UTC (9 years, 1 month ago) by azarah
File size: 26721 byte(s)
Cleanup access/log printing.  Make access printing honour NOCOLOR.  Fix log
printing's last line not honouring NOCOLOR.

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

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