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Revision 143 - (hide annotations) (download)
Thu Jul 7 22:19:52 2005 UTC (12 years, 9 months ago) by azarah
File size: 26593 byte(s) 
Only declare functions in sandbox_futils.c that are used in libsandbox.c when
OUTSIDE_LIBSANDBOX is not defined.
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 138
16 azarah 134 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
17     libsandbox.c:
18     - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
19     write to it.
20 azarah 135 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
21 azarah 136 - Add check_prefixes() with major cleanup on check_access().
22 azarah 137 - Cleanup init_env_entries() and check_prefixes().
23 azarah 134
24 azarah 133 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
25     sandbox_futils.c, libsandbox.c:
26     Remove unused 'pids file' code.
27    
28 azarah 128 * sandbox-1.2.10 (2005/07/03)
29    
30 azarah 126 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
31     Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
32    
33 azarah 123 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
34     General cleanups:
35     - Remove fooling around with exit codes - we error out on presence of a log
36     anyhow.
37 azarah 124 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
38     appropriate there.
39 azarah 123
40 azarah 121 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
41     Cleanup the fail_nametoolong stuff a bit more.
42    
43 azarah 118 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
44 azarah 120 Remove hopefully the last ld.so.preload bits we do not use anymore.
45    
46     11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
47 azarah 119 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
48     in check_syscall(). Should speed things up a bit (at least for the getcwd()
49     and long path name test it goes down to under a second, and not 10+ seconds
50     like before). Also warn if we skip checking due to the canonicalized path
51     being too long.
52    
53     11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
54 azarah 118 More comment/readability cleanups.
55    
56 azarah 117 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
57     sandbox_futils.c, libsandbox.c:
58     Some strncpy/strncat and other cleanups.
59    
60 azarah 115 * sandbox-1.2.9 (2005/06/09)
61    
62 azarah 114 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
63     Move symlink hack down a bit to try and minimize on the amount of lstat()
64     calls we do.
65    
66 azarah 113 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
67     Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
68    
69 azarah 112 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
70     Add wrapper for access() function, bug #85413.
71    
72 azarah 111 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
73     Use generic getcwd() implementation from uclibc - should be more portable
74     and looks a bit cleaner.
75    
76 azarah 110 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
77     Make sure our true_* pointers are initialized to NULL, and that we check for
78     all references that they are valid.
79    
80 azarah 109 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
81     Be default we will fail if the path name we try to canonicalize is too long.
82     This however could cause issues with some things (bug #94630 and #21766), so
83     if fail_nametoolong == 0, canonicalize() will return a null length string and
84     do not fail.
85    
86 azarah 108 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
87     Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
88     make sure we re-export the new TMPDIR environment variable.
89    
90 azarah 106 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
91     Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
92     by Marcus D. Hanwell <cryos@gentoo.org>.
93    
94 azarah 105 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
95     Add /dev/console to write list, bug #38588.
96    
97 azarah 102 * sandbox-1.2.8 (2005/05/13)
98    
99 azarah 99 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
100 azarah 101 sandbox.h, sandbox_futils.c:
101     General cleanups.
102    
103     13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
104 azarah 100 sandbox.h:
105     Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
106    
107     13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
108 azarah 99 sandbox.h, sandbox_futils.c:
109     Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
110     to use TMPDIR if present in environment.
111    
112 azarah 98 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
113     Remove sandbox_log_file from main() as its no longer used.
114    
115 azarah 97 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
116     sandbox_futils.c:
117     Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
118     if already exported when sandbox started). Fix get_sandbox_log() and new
119     get_sandbox_debug_log() to not use already exported environment variables if
120     they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
121     SB_PATH_MAX fixes.
122    
123 azarah 94 * sandbox-1.2.7 (2005/05/12)
124    
125 azarah 93 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
126     sandbox_futils.c:
127     More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
128    
129 azarah 92 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
130     Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
131     with '(null)' in it if we did not call sandbox with absolute path.
132    
133 azarah 89 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
134 azarah 91 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
135     for the child.
136    
137     12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
138 azarah 90 Remove global preload_adaptable as it is no longer used.
139    
140     12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
141 azarah 89 Rewrite environment stuff to only be set when execve'ing the child process
142     to try and avoid issues like bug #91541 that causes sandbox to crash if
143     we set LD_PRELOAD sandbox side already.
144    
145 azarah 87 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
146 azarah 88 Move print_sandbox_log() up to make things neater.
147    
148     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
149 azarah 87 Remove load_preload_libs(), as its not used anymore.
150    
151 azarah 83 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
152 azarah 86 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
153    
154     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
155 azarah 84 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
156    
157     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
158 azarah 83 Remove ld.so.preload crap - we are not going to use it again.
159    
160 azarah 82 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
161     Fix typo in code that checks if we got valid group information, causing a
162     segmentation fault, bug #91637.
163    
164 azarah 79 * sandbox-1.2.6 (2005/05/10)
165    
166 azarah 78 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
167     Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
168     for some odd reason, bug #91541.
169    
170 azarah 77 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
171     Fix typo (sizeof -> strlen).
172    
173 ferringb 76 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
174     rewrote the sbcontext caching code so it accounts for env changes since lib
175     initialization.
176    
177 azarah 75 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
178     We create libctest.c via configure, so no need to keep it around. Do some
179     cleanup related to libctest.c and libctest during configure.
180    
181 azarah 74 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
182     Add rename support of symlinks pointing to protected files/directories.
183    
184 azarah 72 * sandbox-1.2.5 (2005/05/04)
185    
186 azarah 71 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
187     sandbox.bashrc:
188     Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
189     already set, init of the env vars fails for some reason, so do this later on,
190     and do not warn (bug #91431).
191    
192 azarah 70 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
193     sandbox.bashrc:
194     Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
195    
196 azarah 68 * sandbox-1.2.4 (2005/05/03)
197    
198 azarah 66 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
199     Do not init the env entries with each call, as it creates too many calls to
200 azarah 67 lstat, etc. Should speedup things a bit, bug #91040.
201 azarah 66
202 azarah 65 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
203     Add /dev/pty to default write list. Noticed by Morfic.
204    
205 vapier 62 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
206     sandbox.h:
207     uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
208     exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
209    
210 azarah 59 * sandbox-1.2.3 (2005/04/29)
211    
212 azarah 56 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
213     Do not check for (*&#$(* CXX or F77.
214    
215 azarah 54 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
216     Do not append '/' to pathname in filter_path() if it already ends with it.
217    
218 vapier 53 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
219     With az's help, clean up autotools to work with cross-compiling.
220    
221 azarah 59 * sandbox-1.2.2 (2005/04/28)
222 azarah 48
223 azarah 47 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
224     Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
225     have issues; bug #90592.
226    
227 azarah 59 * sandbox-1.2.1 (2005/04/23)
228 azarah 44
229 azarah 43 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
230     getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
231     Make sure all functions used in libsandbox.c is declared static. Define
232     SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
233     linking with its object. Hopefully this will fix bug #90153.
234    
235 azarah 59 * sandbox-1.2 (2005/04/23)
236 azarah 46
237 azarah 40 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
238     Allow lchown a symlink in write-allowed path pointing to write-denied
239     target.
240    
241 genone 39 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
242     Also show resolved symlink names in the log.
243    
244 azarah 37 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
245     Seems -nostdlib was the problem with the constructor/destructor - remove it
246     from Makefile.am, and change the constructor/destructor names again.
247    
248 azarah 36 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
249     Also rename the _init() and _fini() declarations.
250    
251 azarah 35 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
252     Fixup the constructor/destructor function names again (they should be _init()
253     and _fini() it seems, and not being called caused sandbox_lib_path to be
254     unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
255     Add both the path in given SANDBOX_x variable, as well as its symlink
256     resolved path in init_env_entries(). Modify filter_path() to be able to
257     resolve paths without resolving symlinks, as well as to be able to resolve
258     symlinks. Fix a possible segfault in check_access(). Add symlink resolving
259     to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
260     for bug #31019 cause access violations if we try to remove a symlink that is
261     not in protected path, but points to a protected path. Fix a memory leak in
262     sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
263     (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
264     (pid_string was uninitialized). General syntax cleanups.
265    
266 ferringb 34 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
267     infamous "pids file is not a regular file" w/out newline bug.
268    
269 ferringb 33 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
270     Correct libc_version path detection, since it was screwing up if libdir !=
271     "/lib/".
272    
273     02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
274 azarah 32 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
275    
276 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
277 azarah 31 Fix symbols.in not added to dist.
278    
279 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
280 azarah 30 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
281     White space fixes.
282    
283 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
284 azarah 30 configure.in, getcwd.c, libsandbox.c, symbols.in:
285 azarah 29 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
286     getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
287     for glibc and other libc's that use this. Update libsandbox.c to use these
288     symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
289     process unset it.
290    
291 ferringb 33 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
292 ferringb 28 killed off _init and _fini in favor of
293     void __attribute__ ((constructor)) init_func and
294     void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
295    
296 ferringb 26 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
297     canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
298     having the hick-ups.
299    
300 ferringb 24 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
301     Makefile.am: Fixed compilation.
302    
303 ferringb 18 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
304     Gutted the bugger so it stops checking for a c++ and fortran compiler.
305     Do *not* regenerate aclocal.m4 for making a release until a better
306     solution is created.
307    
308 ferringb 16 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
309     Removal of more hardcoded paths.
310    
311 ferringb 13 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
312     sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
313    
314     19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
315 ferringb 6 Sandbox is now autotooled, create-localdecls needs to be killed and the code
316     shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
317     are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
318     To get to a point of testing, automake && autoconf; created requisite files w/
319     a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
320     /lib and /usr/lib/portage/bin.
321    
322 ferringb 2 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
323     closing out bug #70225, potential overflow of the sandbox_pids_file var.
324    
325     07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
326     (think it was at least) allows intermixing of code and data segments. bug #70351
327     should be fixed by this.
328    
329     03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
330     futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
331    
332     02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
333     Seth Robertson that tracked down all adjuct flags for read operations that
334     do not invoke a write operation.
335    
336     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
337     Another fix from jstubbs regarding a free() on a stack variable for the
338     environment -- tracking now prevents extraneous free()'s segfault.
339    
340     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
341     J. Stubbs tracked down a new bug where mkdir was failing to the patch on
342     the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
343     Also remove the errno = ESUCCESS settings as documentation points out that
344     a library isn't allowed to do that.
345    
346     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
347     file_security_check() function to check random potential exploits on files
348     that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
349     the 'system-crippling' exploits (bug 21923) and catches a few other
350     potential problems.
351    
352     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
353     32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
354    
355     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
356     bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
357     Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
358    
359     29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
360     Fix permissions and group of pids file and logs. Permissions should be 0664
361     and group should be 'portage'. Bug #34260.
362    
363     28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
364     Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
365     to the real execve (in our execve wrapper). Seems that on some arches (sparc
366     among others) do not allow us to tamper with the readonly copy passed to
367     execve, so pass our own copy of the environment. Bug #42290.
368    
369     11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
370     Changed tail to head and added a notice about duration of glibc check.
371    
372     21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
373     Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
374     as there isn't a guarentee that it is dynamic.
375    
376     02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
377     If 'file' passed to before_syscall(const char *func, const char *file) is
378     invalid, we should set errno to ENOENT, and not EINVAL. This should
379     close bug #32238.
380    
381     14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
382     Fix a bug that occurs mainly on 64bit arch, where the file passed to
383     the functions we wrap, is invalid, and then cause canonicalize to pass
384     garbage to before_syscall(), thanks to great detective work from
385     Andrea Luzzardi <al@sig11.org> (bug #29846).
386    
387     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
388     Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
389    
390     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
391     Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
392     only checked the destination patch, and not the source, so we could move
393     a protected file to a unprotected directory, and then delete/modify it.
394     Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
395    
396     12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
397     Added python2.3 to the predict section/variable.
398    
399     28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
400     sandbox.h, sandbox_futils.c :
401     Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
402     it is not set, it will revert to its old value.
403    
404     27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
405     Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
406     rather than failing with a violation, bug #29748.
407    
408     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
409     Fix canonicalize() to ignore calls with path = "".
410    
411     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
412     sandbox_futils.c, canonicalize.c :
413     Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
414     call handled strings larger than PATH_MAX (bug #21766). It however does not
415     work the same on 2.4 kernels.
416    
417     To fix, I added the posix implementation of getcwd() (from glibc cvs) that
418     do not need the system call. We use the default getcwd() function via a
419     wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
420     means the current directory was removed, OR that the the system call for
421     getcwd failed (curious is that it do not fail and return NULL or set
422     errno, but rather just truncate the retured directory - usually from the
423     start), and if so, we use the generic getcwd() function (__egetcwd). Note
424     that we do not use the generic version all the time, as it calls lstat()
425     a great number of times, and performance degrade much.
426    
427     29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
428     libsandbox.c :
429     Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
430    
431     22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
432     create-localdecls :
433     When checking path names of files accessed, we need to canonicalize it, else
434     it may be a symlink in a 'write allowed' directory pointing to a file in a
435     directory we should not have write access to.
436    
437     With something like coreutils-5.0, we have two problems:
438     1) One of the tests checks if getcwd() can return a path longer than
439     PATH_MAX. This test then tries to create a dir which even while
440     created local (mkdir("conftest2")), it ends up being resolved with
441     a name that is much larger than PATH_MAX. The problem now is that
442     canonicalize() have undefined behaviour when the path was too long
443     (returned wrongly truncated paths, etc), and pass the wrong path to
444     before_syscall() (causing the bogus sandbox violations).
445     2) The ecanonicalize() function we used, along with the canonicalize()
446     function did not support longer than PATH_MAX. This is partly a
447     cause for 1), but the error checking (rather lack of it) of calls
448     to erealpath() in canonicalize() was the prime reason for 1).
449    
450     As we do not use this canonicalized name to call the function, we resolve this
451     by fixing canonicalize() to do better error checking, and ecanonicalize() as
452     well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
453     While they will resolve paths properly now, and can check if a write/read is
454     allowed, the functions called from the sandboxed environment will still work
455     as expected.
456    
457     This should resolve bug #21766.
458    
459     06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
460     For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
461     it (bug #16298).
462    
463     Problem is that for some reason locale fopen's locale.alias with mode "rm".
464    
465     -------------------------------------------------------
466     nosferatu root # grep fopen locale.log
467     fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
468     nosferatu root #
469     --------------------------------------------------------
470    
471     I checked the source of locale, but it have fopen with mode 'r', so
472     not sure where the "rm" mode comes from. Anyhow, changed the check in
473     before_syscall_open_char() to also see mode "rm" as readonly.
474    
475     23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
476    
477     Add glibc-2.3 support.
478    
479     22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
480    
481     Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
482     operations releated to preload, as well as only try to modify ld.so.preload
483     if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
484     not using ld.so.preload. Fix to not write this instance of sandbox's pid
485     to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
486    
487     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
488    
489     Changed the LD to CC for hppa.
490    
491     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
492    
493     Killed the previous changes I made.
494    
495     17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
496    
497     Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
498    
499     09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
500    
501     Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
502    
503     16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
504    
505     Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
506     for this fix.
507    
508     4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
509    
510     sandbox_futils defined a dirname() function that was masking the same
511     function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
512     '/usr/lib/portage/bi/'). Fixed function to return expected results and
513     renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
514     11231.
515    
516     4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
517    
518     Fix a segfault in libsandbox.c if canonicalize() was called with
519     first parameter = NULL.
520    
521     1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
522    
523     Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
524     cleanup() for this.
525    
526     Change cleanup() in sandbox.c not to exit with fail status if
527     the pidsfile is missing. We really should still display sandbox
528     violations if they occured.
529    
530     31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
531    
532     Update cleanup() in sandbox.c to remove the PIDSFILE if this is
533     the last sandbox running.
534    
535     25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
536    
537     Major cleanups to mainly libsandbox.c again.
538    
539     22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
540    
541     Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
542     parties involved should please contact me so that we can fix it.
543    
544     Add opendir wrapper to libsandbox.c.
545    
546     21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
547    
548     Do some more cleanups to ecanonicalize(), as it dropped filenames in
549     rare cases (after my symlink cleanups), and caused glibc to bork.
550     These fixes went into canonicalize.c.
551    
552     20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
553    
554     Fix spawn_shell() and main() in sandbox.c to properly return fail
555     status.
556    
557     19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
558    
559     The new canonicalize() function in libsandbox.c also resolved symlinks,
560     which caused on cleaning sandbox errors if the symlink pointed to a
561     file in the live root. Ripped out canonicalize() and realpath() from
562     glibc; removed the symlink stuff, and changed them to ecanonicalize()
563     and erealpath().
564    
565     18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
566    
567     Ripped out all the wrappers, and implemented those of InstallWatch.
568     Losts of cleanups and bugfixes. Implement a execve that forces
569     $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
570     /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
571     sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
572     parts; it now have an install target.
573    
574     Reformat the whole thing to look somewhat like the reworked sandbox.c
575     and new sandbox.h and sandbox_futils.c from:
576    
577     Brad House <brad@mainstreetsoftworks.com>.
578    
579     Additional Copyrights now due to the InstallWatch code:
580    
581     Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>
582    

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