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Revision 142 - (hide annotations) (download)
Thu Jul 7 22:14:57 2005 UTC (9 years, 2 months ago) by azarah
Original Path: trunk/ChangeLog
File size: 26472 byte(s)
Remove unused includes and variables.
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 138
14 azarah 134 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
15     libsandbox.c:
16     - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
17     write to it.
18 azarah 135 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
19 azarah 136 - Add check_prefixes() with major cleanup on check_access().
20 azarah 137 - Cleanup init_env_entries() and check_prefixes().
21 azarah 134
22 azarah 133 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
23     sandbox_futils.c, libsandbox.c:
24     Remove unused 'pids file' code.
25    
26 azarah 128 * sandbox-1.2.10 (2005/07/03)
27    
28 azarah 126 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
29     Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
30    
31 azarah 123 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
32     General cleanups:
33     - Remove fooling around with exit codes - we error out on presence of a log
34     anyhow.
35 azarah 124 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
36     appropriate there.
37 azarah 123
38 azarah 121 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
39     Cleanup the fail_nametoolong stuff a bit more.
40    
41 azarah 118 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
42 azarah 120 Remove hopefully the last ld.so.preload bits we do not use anymore.
43    
44     11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
45 azarah 119 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
46     in check_syscall(). Should speed things up a bit (at least for the getcwd()
47     and long path name test it goes down to under a second, and not 10+ seconds
48     like before). Also warn if we skip checking due to the canonicalized path
49     being too long.
50    
51     11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
52 azarah 118 More comment/readability cleanups.
53    
54 azarah 117 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
55     sandbox_futils.c, libsandbox.c:
56     Some strncpy/strncat and other cleanups.
57    
58 azarah 115 * sandbox-1.2.9 (2005/06/09)
59    
60 azarah 114 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
61     Move symlink hack down a bit to try and minimize on the amount of lstat()
62     calls we do.
63    
64 azarah 113 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
65     Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
66    
67 azarah 112 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
68     Add wrapper for access() function, bug #85413.
69    
70 azarah 111 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
71     Use generic getcwd() implementation from uclibc - should be more portable
72     and looks a bit cleaner.
73    
74 azarah 110 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
75     Make sure our true_* pointers are initialized to NULL, and that we check for
76     all references that they are valid.
77    
78 azarah 109 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
79     Be default we will fail if the path name we try to canonicalize is too long.
80     This however could cause issues with some things (bug #94630 and #21766), so
81     if fail_nametoolong == 0, canonicalize() will return a null length string and
82     do not fail.
83    
84 azarah 108 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
85     Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
86     make sure we re-export the new TMPDIR environment variable.
87    
88 azarah 106 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
89     Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
90     by Marcus D. Hanwell <cryos@gentoo.org>.
91    
92 azarah 105 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
93     Add /dev/console to write list, bug #38588.
94    
95 azarah 102 * sandbox-1.2.8 (2005/05/13)
96    
97 azarah 99 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
98 azarah 101 sandbox.h, sandbox_futils.c:
99     General cleanups.
100    
101     13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
102 azarah 100 sandbox.h:
103     Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
104    
105     13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
106 azarah 99 sandbox.h, sandbox_futils.c:
107     Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
108     to use TMPDIR if present in environment.
109    
110 azarah 98 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
111     Remove sandbox_log_file from main() as its no longer used.
112    
113 azarah 97 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
114     sandbox_futils.c:
115     Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
116     if already exported when sandbox started). Fix get_sandbox_log() and new
117     get_sandbox_debug_log() to not use already exported environment variables if
118     they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
119     SB_PATH_MAX fixes.
120    
121 azarah 94 * sandbox-1.2.7 (2005/05/12)
122    
123 azarah 93 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
124     sandbox_futils.c:
125     More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
126    
127 azarah 92 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
128     Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
129     with '(null)' in it if we did not call sandbox with absolute path.
130    
131 azarah 89 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
132 azarah 91 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
133     for the child.
134    
135     12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
136 azarah 90 Remove global preload_adaptable as it is no longer used.
137    
138     12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
139 azarah 89 Rewrite environment stuff to only be set when execve'ing the child process
140     to try and avoid issues like bug #91541 that causes sandbox to crash if
141     we set LD_PRELOAD sandbox side already.
142    
143 azarah 87 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
144 azarah 88 Move print_sandbox_log() up to make things neater.
145    
146     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
147 azarah 87 Remove load_preload_libs(), as its not used anymore.
148    
149 azarah 83 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
150 azarah 86 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
151    
152     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
153 azarah 84 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
154    
155     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
156 azarah 83 Remove ld.so.preload crap - we are not going to use it again.
157    
158 azarah 82 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
159     Fix typo in code that checks if we got valid group information, causing a
160     segmentation fault, bug #91637.
161    
162 azarah 79 * sandbox-1.2.6 (2005/05/10)
163    
164 azarah 78 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
165     Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
166     for some odd reason, bug #91541.
167    
168 azarah 77 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
169     Fix typo (sizeof -> strlen).
170    
171 ferringb 76 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
172     rewrote the sbcontext caching code so it accounts for env changes since lib
173     initialization.
174    
175 azarah 75 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
176     We create libctest.c via configure, so no need to keep it around. Do some
177     cleanup related to libctest.c and libctest during configure.
178    
179 azarah 74 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
180     Add rename support of symlinks pointing to protected files/directories.
181    
182 azarah 72 * sandbox-1.2.5 (2005/05/04)
183    
184 azarah 71 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
185     sandbox.bashrc:
186     Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
187     already set, init of the env vars fails for some reason, so do this later on,
188     and do not warn (bug #91431).
189    
190 azarah 70 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
191     sandbox.bashrc:
192     Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
193    
194 azarah 68 * sandbox-1.2.4 (2005/05/03)
195    
196 azarah 66 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
197     Do not init the env entries with each call, as it creates too many calls to
198 azarah 67 lstat, etc. Should speedup things a bit, bug #91040.
199 azarah 66
200 azarah 65 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
201     Add /dev/pty to default write list. Noticed by Morfic.
202    
203 vapier 62 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
204     sandbox.h:
205     uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
206     exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
207    
208 azarah 59 * sandbox-1.2.3 (2005/04/29)
209    
210 azarah 56 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
211     Do not check for (*&#$(* CXX or F77.
212    
213 azarah 54 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
214     Do not append '/' to pathname in filter_path() if it already ends with it.
215    
216 vapier 53 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
217     With az's help, clean up autotools to work with cross-compiling.
218    
219 azarah 59 * sandbox-1.2.2 (2005/04/28)
220 azarah 48
221 azarah 47 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
222     Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
223     have issues; bug #90592.
224    
225 azarah 59 * sandbox-1.2.1 (2005/04/23)
226 azarah 44
227 azarah 43 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
228     getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
229     Make sure all functions used in libsandbox.c is declared static. Define
230     SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
231     linking with its object. Hopefully this will fix bug #90153.
232    
233 azarah 59 * sandbox-1.2 (2005/04/23)
234 azarah 46
235 azarah 40 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
236     Allow lchown a symlink in write-allowed path pointing to write-denied
237     target.
238    
239 genone 39 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
240     Also show resolved symlink names in the log.
241    
242 azarah 37 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
243     Seems -nostdlib was the problem with the constructor/destructor - remove it
244     from Makefile.am, and change the constructor/destructor names again.
245    
246 azarah 36 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
247     Also rename the _init() and _fini() declarations.
248    
249 azarah 35 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
250     Fixup the constructor/destructor function names again (they should be _init()
251     and _fini() it seems, and not being called caused sandbox_lib_path to be
252     unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
253     Add both the path in given SANDBOX_x variable, as well as its symlink
254     resolved path in init_env_entries(). Modify filter_path() to be able to
255     resolve paths without resolving symlinks, as well as to be able to resolve
256     symlinks. Fix a possible segfault in check_access(). Add symlink resolving
257     to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
258     for bug #31019 cause access violations if we try to remove a symlink that is
259     not in protected path, but points to a protected path. Fix a memory leak in
260     sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
261     (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
262     (pid_string was uninitialized). General syntax cleanups.
263    
264 ferringb 34 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
265     infamous "pids file is not a regular file" w/out newline bug.
266    
267 ferringb 33 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
268     Correct libc_version path detection, since it was screwing up if libdir !=
269     "/lib/".
270    
271     02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
272 azarah 32 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
273    
274 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
275 azarah 31 Fix symbols.in not added to dist.
276    
277 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
278 azarah 30 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
279     White space fixes.
280    
281 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
282 azarah 30 configure.in, getcwd.c, libsandbox.c, symbols.in:
283 azarah 29 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
284     getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
285     for glibc and other libc's that use this. Update libsandbox.c to use these
286     symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
287     process unset it.
288    
289 ferringb 33 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
290 ferringb 28 killed off _init and _fini in favor of
291     void __attribute__ ((constructor)) init_func and
292     void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
293    
294 ferringb 26 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
295     canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
296     having the hick-ups.
297    
298 ferringb 24 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
299     Makefile.am: Fixed compilation.
300    
301 ferringb 18 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
302     Gutted the bugger so it stops checking for a c++ and fortran compiler.
303     Do *not* regenerate aclocal.m4 for making a release until a better
304     solution is created.
305    
306 ferringb 16 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
307     Removal of more hardcoded paths.
308    
309 ferringb 13 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
310     sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
311    
312     19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
313 ferringb 6 Sandbox is now autotooled, create-localdecls needs to be killed and the code
314     shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
315     are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
316     To get to a point of testing, automake && autoconf; created requisite files w/
317     a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
318     /lib and /usr/lib/portage/bin.
319    
320 ferringb 2 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
321     closing out bug #70225, potential overflow of the sandbox_pids_file var.
322    
323     07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
324     (think it was at least) allows intermixing of code and data segments. bug #70351
325     should be fixed by this.
326    
327     03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
328     futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
329    
330     02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
331     Seth Robertson that tracked down all adjuct flags for read operations that
332     do not invoke a write operation.
333    
334     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
335     Another fix from jstubbs regarding a free() on a stack variable for the
336     environment -- tracking now prevents extraneous free()'s segfault.
337    
338     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
339     J. Stubbs tracked down a new bug where mkdir was failing to the patch on
340     the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
341     Also remove the errno = ESUCCESS settings as documentation points out that
342     a library isn't allowed to do that.
343    
344     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
345     file_security_check() function to check random potential exploits on files
346     that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
347     the 'system-crippling' exploits (bug 21923) and catches a few other
348     potential problems.
349    
350     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
351     32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
352    
353     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
354     bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
355     Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
356    
357     29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
358     Fix permissions and group of pids file and logs. Permissions should be 0664
359     and group should be 'portage'. Bug #34260.
360    
361     28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
362     Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
363     to the real execve (in our execve wrapper). Seems that on some arches (sparc
364     among others) do not allow us to tamper with the readonly copy passed to
365     execve, so pass our own copy of the environment. Bug #42290.
366    
367     11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
368     Changed tail to head and added a notice about duration of glibc check.
369    
370     21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
371     Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
372     as there isn't a guarentee that it is dynamic.
373    
374     02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
375     If 'file' passed to before_syscall(const char *func, const char *file) is
376     invalid, we should set errno to ENOENT, and not EINVAL. This should
377     close bug #32238.
378    
379     14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
380     Fix a bug that occurs mainly on 64bit arch, where the file passed to
381     the functions we wrap, is invalid, and then cause canonicalize to pass
382     garbage to before_syscall(), thanks to great detective work from
383     Andrea Luzzardi <al@sig11.org> (bug #29846).
384    
385     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
386     Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
387    
388     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
389     Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
390     only checked the destination patch, and not the source, so we could move
391     a protected file to a unprotected directory, and then delete/modify it.
392     Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
393    
394     12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
395     Added python2.3 to the predict section/variable.
396    
397     28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
398     sandbox.h, sandbox_futils.c :
399     Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
400     it is not set, it will revert to its old value.
401    
402     27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
403     Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
404     rather than failing with a violation, bug #29748.
405    
406     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
407     Fix canonicalize() to ignore calls with path = "".
408    
409     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
410     sandbox_futils.c, canonicalize.c :
411     Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
412     call handled strings larger than PATH_MAX (bug #21766). It however does not
413     work the same on 2.4 kernels.
414    
415     To fix, I added the posix implementation of getcwd() (from glibc cvs) that
416     do not need the system call. We use the default getcwd() function via a
417     wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
418     means the current directory was removed, OR that the the system call for
419     getcwd failed (curious is that it do not fail and return NULL or set
420     errno, but rather just truncate the retured directory - usually from the
421     start), and if so, we use the generic getcwd() function (__egetcwd). Note
422     that we do not use the generic version all the time, as it calls lstat()
423     a great number of times, and performance degrade much.
424    
425     29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
426     libsandbox.c :
427     Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
428    
429     22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
430     create-localdecls :
431     When checking path names of files accessed, we need to canonicalize it, else
432     it may be a symlink in a 'write allowed' directory pointing to a file in a
433     directory we should not have write access to.
434    
435     With something like coreutils-5.0, we have two problems:
436     1) One of the tests checks if getcwd() can return a path longer than
437     PATH_MAX. This test then tries to create a dir which even while
438     created local (mkdir("conftest2")), it ends up being resolved with
439     a name that is much larger than PATH_MAX. The problem now is that
440     canonicalize() have undefined behaviour when the path was too long
441     (returned wrongly truncated paths, etc), and pass the wrong path to
442     before_syscall() (causing the bogus sandbox violations).
443     2) The ecanonicalize() function we used, along with the canonicalize()
444     function did not support longer than PATH_MAX. This is partly a
445     cause for 1), but the error checking (rather lack of it) of calls
446     to erealpath() in canonicalize() was the prime reason for 1).
447    
448     As we do not use this canonicalized name to call the function, we resolve this
449     by fixing canonicalize() to do better error checking, and ecanonicalize() as
450     well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
451     While they will resolve paths properly now, and can check if a write/read is
452     allowed, the functions called from the sandboxed environment will still work
453     as expected.
454    
455     This should resolve bug #21766.
456    
457     06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
458     For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
459     it (bug #16298).
460    
461     Problem is that for some reason locale fopen's locale.alias with mode "rm".
462    
463     -------------------------------------------------------
464     nosferatu root # grep fopen locale.log
465     fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
466     nosferatu root #
467     --------------------------------------------------------
468    
469     I checked the source of locale, but it have fopen with mode 'r', so
470     not sure where the "rm" mode comes from. Anyhow, changed the check in
471     before_syscall_open_char() to also see mode "rm" as readonly.
472    
473     23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
474    
475     Add glibc-2.3 support.
476    
477     22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
478    
479     Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
480     operations releated to preload, as well as only try to modify ld.so.preload
481     if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
482     not using ld.so.preload. Fix to not write this instance of sandbox's pid
483     to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
484    
485     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
486    
487     Changed the LD to CC for hppa.
488    
489     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
490    
491     Killed the previous changes I made.
492    
493     17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
494    
495     Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
496    
497     09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
498    
499     Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
500    
501     16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
502    
503     Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
504     for this fix.
505    
506     4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
507    
508     sandbox_futils defined a dirname() function that was masking the same
509     function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
510     '/usr/lib/portage/bi/'). Fixed function to return expected results and
511     renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
512     11231.
513    
514     4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
515    
516     Fix a segfault in libsandbox.c if canonicalize() was called with
517     first parameter = NULL.
518    
519     1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
520    
521     Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
522     cleanup() for this.
523    
524     Change cleanup() in sandbox.c not to exit with fail status if
525     the pidsfile is missing. We really should still display sandbox
526     violations if they occured.
527    
528     31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
529    
530     Update cleanup() in sandbox.c to remove the PIDSFILE if this is
531     the last sandbox running.
532    
533     25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
534    
535     Major cleanups to mainly libsandbox.c again.
536    
537     22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
538    
539     Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
540     parties involved should please contact me so that we can fix it.
541    
542     Add opendir wrapper to libsandbox.c.
543    
544     21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
545    
546     Do some more cleanups to ecanonicalize(), as it dropped filenames in
547     rare cases (after my symlink cleanups), and caused glibc to bork.
548     These fixes went into canonicalize.c.
549    
550     20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
551    
552     Fix spawn_shell() and main() in sandbox.c to properly return fail
553     status.
554    
555     19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
556    
557     The new canonicalize() function in libsandbox.c also resolved symlinks,
558     which caused on cleaning sandbox errors if the symlink pointed to a
559     file in the live root. Ripped out canonicalize() and realpath() from
560     glibc; removed the symlink stuff, and changed them to ecanonicalize()
561     and erealpath().
562    
563     18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
564    
565     Ripped out all the wrappers, and implemented those of InstallWatch.
566     Losts of cleanups and bugfixes. Implement a execve that forces
567     $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
568     /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
569     sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
570     parts; it now have an install target.
571    
572     Reformat the whole thing to look somewhat like the reworked sandbox.c
573     and new sandbox.h and sandbox_futils.c from:
574    
575     Brad House <brad@mainstreetsoftworks.com>.
576    
577     Additional Copyrights now due to the InstallWatch code:
578    
579     Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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