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Revision 133 - (hide annotations) (download)
Wed Jul 6 00:36:46 2005 UTC (9 years, 3 months ago) by azarah
Original Path: trunk/ChangeLog
File size: 25601 byte(s)
Remove unused 'pids file' code.
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 133 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
6     sandbox_futils.c, libsandbox.c:
7     Remove unused 'pids file' code.
8    
9 azarah 128 * sandbox-1.2.10 (2005/07/03)
10    
11 azarah 126 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
12     Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
13    
14 azarah 123 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
15     General cleanups:
16     - Remove fooling around with exit codes - we error out on presence of a log
17     anyhow.
18 azarah 124 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
19     appropriate there.
20 azarah 123
21 azarah 121 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
22     Cleanup the fail_nametoolong stuff a bit more.
23    
24 azarah 118 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
25 azarah 120 Remove hopefully the last ld.so.preload bits we do not use anymore.
26    
27     11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
28 azarah 119 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
29     in check_syscall(). Should speed things up a bit (at least for the getcwd()
30     and long path name test it goes down to under a second, and not 10+ seconds
31     like before). Also warn if we skip checking due to the canonicalized path
32     being too long.
33    
34     11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
35 azarah 118 More comment/readability cleanups.
36    
37 azarah 117 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
38     sandbox_futils.c, libsandbox.c:
39     Some strncpy/strncat and other cleanups.
40    
41 azarah 115 * sandbox-1.2.9 (2005/06/09)
42    
43 azarah 114 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
44     Move symlink hack down a bit to try and minimize on the amount of lstat()
45     calls we do.
46    
47 azarah 113 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
48     Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
49    
50 azarah 112 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
51     Add wrapper for access() function, bug #85413.
52    
53 azarah 111 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
54     Use generic getcwd() implementation from uclibc - should be more portable
55     and looks a bit cleaner.
56    
57 azarah 110 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
58     Make sure our true_* pointers are initialized to NULL, and that we check for
59     all references that they are valid.
60    
61 azarah 109 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
62     Be default we will fail if the path name we try to canonicalize is too long.
63     This however could cause issues with some things (bug #94630 and #21766), so
64     if fail_nametoolong == 0, canonicalize() will return a null length string and
65     do not fail.
66    
67 azarah 108 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
68     Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
69     make sure we re-export the new TMPDIR environment variable.
70    
71 azarah 106 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
72     Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
73     by Marcus D. Hanwell <cryos@gentoo.org>.
74    
75 azarah 105 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
76     Add /dev/console to write list, bug #38588.
77    
78 azarah 102 * sandbox-1.2.8 (2005/05/13)
79    
80 azarah 99 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
81 azarah 101 sandbox.h, sandbox_futils.c:
82     General cleanups.
83    
84     13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
85 azarah 100 sandbox.h:
86     Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
87    
88     13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
89 azarah 99 sandbox.h, sandbox_futils.c:
90     Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
91     to use TMPDIR if present in environment.
92    
93 azarah 98 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
94     Remove sandbox_log_file from main() as its no longer used.
95    
96 azarah 97 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
97     sandbox_futils.c:
98     Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
99     if already exported when sandbox started). Fix get_sandbox_log() and new
100     get_sandbox_debug_log() to not use already exported environment variables if
101     they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
102     SB_PATH_MAX fixes.
103    
104 azarah 94 * sandbox-1.2.7 (2005/05/12)
105    
106 azarah 93 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
107     sandbox_futils.c:
108     More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
109    
110 azarah 92 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
111     Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
112     with '(null)' in it if we did not call sandbox with absolute path.
113    
114 azarah 89 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
115 azarah 91 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
116     for the child.
117    
118     12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
119 azarah 90 Remove global preload_adaptable as it is no longer used.
120    
121     12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
122 azarah 89 Rewrite environment stuff to only be set when execve'ing the child process
123     to try and avoid issues like bug #91541 that causes sandbox to crash if
124     we set LD_PRELOAD sandbox side already.
125    
126 azarah 87 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
127 azarah 88 Move print_sandbox_log() up to make things neater.
128    
129     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
130 azarah 87 Remove load_preload_libs(), as its not used anymore.
131    
132 azarah 83 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
133 azarah 86 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
134    
135     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
136 azarah 84 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
137    
138     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
139 azarah 83 Remove ld.so.preload crap - we are not going to use it again.
140    
141 azarah 82 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
142     Fix typo in code that checks if we got valid group information, causing a
143     segmentation fault, bug #91637.
144    
145 azarah 79 * sandbox-1.2.6 (2005/05/10)
146    
147 azarah 78 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
148     Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
149     for some odd reason, bug #91541.
150    
151 azarah 77 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
152     Fix typo (sizeof -> strlen).
153    
154 ferringb 76 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
155     rewrote the sbcontext caching code so it accounts for env changes since lib
156     initialization.
157    
158 azarah 75 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
159     We create libctest.c via configure, so no need to keep it around. Do some
160     cleanup related to libctest.c and libctest during configure.
161    
162 azarah 74 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
163     Add rename support of symlinks pointing to protected files/directories.
164    
165 azarah 72 * sandbox-1.2.5 (2005/05/04)
166    
167 azarah 71 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
168     sandbox.bashrc:
169     Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
170     already set, init of the env vars fails for some reason, so do this later on,
171     and do not warn (bug #91431).
172    
173 azarah 70 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
174     sandbox.bashrc:
175     Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
176    
177 azarah 68 * sandbox-1.2.4 (2005/05/03)
178    
179 azarah 66 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
180     Do not init the env entries with each call, as it creates too many calls to
181 azarah 67 lstat, etc. Should speedup things a bit, bug #91040.
182 azarah 66
183 azarah 65 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
184     Add /dev/pty to default write list. Noticed by Morfic.
185    
186 vapier 62 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
187     sandbox.h:
188     uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
189     exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
190    
191 azarah 59 * sandbox-1.2.3 (2005/04/29)
192    
193 azarah 56 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
194     Do not check for (*&#$(* CXX or F77.
195    
196 azarah 54 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
197     Do not append '/' to pathname in filter_path() if it already ends with it.
198    
199 vapier 53 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
200     With az's help, clean up autotools to work with cross-compiling.
201    
202 azarah 59 * sandbox-1.2.2 (2005/04/28)
203 azarah 48
204 azarah 47 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
205     Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
206     have issues; bug #90592.
207    
208 azarah 59 * sandbox-1.2.1 (2005/04/23)
209 azarah 44
210 azarah 43 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
211     getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
212     Make sure all functions used in libsandbox.c is declared static. Define
213     SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
214     linking with its object. Hopefully this will fix bug #90153.
215    
216 azarah 59 * sandbox-1.2 (2005/04/23)
217 azarah 46
218 azarah 40 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
219     Allow lchown a symlink in write-allowed path pointing to write-denied
220     target.
221    
222 genone 39 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
223     Also show resolved symlink names in the log.
224    
225 azarah 37 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
226     Seems -nostdlib was the problem with the constructor/destructor - remove it
227     from Makefile.am, and change the constructor/destructor names again.
228    
229 azarah 36 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
230     Also rename the _init() and _fini() declarations.
231    
232 azarah 35 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
233     Fixup the constructor/destructor function names again (they should be _init()
234     and _fini() it seems, and not being called caused sandbox_lib_path to be
235     unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
236     Add both the path in given SANDBOX_x variable, as well as its symlink
237     resolved path in init_env_entries(). Modify filter_path() to be able to
238     resolve paths without resolving symlinks, as well as to be able to resolve
239     symlinks. Fix a possible segfault in check_access(). Add symlink resolving
240     to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
241     for bug #31019 cause access violations if we try to remove a symlink that is
242     not in protected path, but points to a protected path. Fix a memory leak in
243     sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
244     (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
245     (pid_string was uninitialized). General syntax cleanups.
246    
247 ferringb 34 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
248     infamous "pids file is not a regular file" w/out newline bug.
249    
250 ferringb 33 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
251     Correct libc_version path detection, since it was screwing up if libdir !=
252     "/lib/".
253    
254     02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
255 azarah 32 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
256    
257 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
258 azarah 31 Fix symbols.in not added to dist.
259    
260 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
261 azarah 30 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
262     White space fixes.
263    
264 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
265 azarah 30 configure.in, getcwd.c, libsandbox.c, symbols.in:
266 azarah 29 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
267     getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
268     for glibc and other libc's that use this. Update libsandbox.c to use these
269     symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
270     process unset it.
271    
272 ferringb 33 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
273 ferringb 28 killed off _init and _fini in favor of
274     void __attribute__ ((constructor)) init_func and
275     void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
276    
277 ferringb 26 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
278     canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
279     having the hick-ups.
280    
281 ferringb 24 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
282     Makefile.am: Fixed compilation.
283    
284 ferringb 18 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
285     Gutted the bugger so it stops checking for a c++ and fortran compiler.
286     Do *not* regenerate aclocal.m4 for making a release until a better
287     solution is created.
288    
289 ferringb 16 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
290     Removal of more hardcoded paths.
291    
292 ferringb 13 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
293     sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
294    
295     19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
296 ferringb 6 Sandbox is now autotooled, create-localdecls needs to be killed and the code
297     shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
298     are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
299     To get to a point of testing, automake && autoconf; created requisite files w/
300     a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
301     /lib and /usr/lib/portage/bin.
302    
303 ferringb 2 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
304     closing out bug #70225, potential overflow of the sandbox_pids_file var.
305    
306     07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
307     (think it was at least) allows intermixing of code and data segments. bug #70351
308     should be fixed by this.
309    
310     03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
311     futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
312    
313     02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
314     Seth Robertson that tracked down all adjuct flags for read operations that
315     do not invoke a write operation.
316    
317     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
318     Another fix from jstubbs regarding a free() on a stack variable for the
319     environment -- tracking now prevents extraneous free()'s segfault.
320    
321     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
322     J. Stubbs tracked down a new bug where mkdir was failing to the patch on
323     the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
324     Also remove the errno = ESUCCESS settings as documentation points out that
325     a library isn't allowed to do that.
326    
327     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
328     file_security_check() function to check random potential exploits on files
329     that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
330     the 'system-crippling' exploits (bug 21923) and catches a few other
331     potential problems.
332    
333     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
334     32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
335    
336     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
337     bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
338     Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
339    
340     29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
341     Fix permissions and group of pids file and logs. Permissions should be 0664
342     and group should be 'portage'. Bug #34260.
343    
344     28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
345     Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
346     to the real execve (in our execve wrapper). Seems that on some arches (sparc
347     among others) do not allow us to tamper with the readonly copy passed to
348     execve, so pass our own copy of the environment. Bug #42290.
349    
350     11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
351     Changed tail to head and added a notice about duration of glibc check.
352    
353     21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
354     Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
355     as there isn't a guarentee that it is dynamic.
356    
357     02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
358     If 'file' passed to before_syscall(const char *func, const char *file) is
359     invalid, we should set errno to ENOENT, and not EINVAL. This should
360     close bug #32238.
361    
362     14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
363     Fix a bug that occurs mainly on 64bit arch, where the file passed to
364     the functions we wrap, is invalid, and then cause canonicalize to pass
365     garbage to before_syscall(), thanks to great detective work from
366     Andrea Luzzardi <al@sig11.org> (bug #29846).
367    
368     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
369     Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
370    
371     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
372     Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
373     only checked the destination patch, and not the source, so we could move
374     a protected file to a unprotected directory, and then delete/modify it.
375     Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
376    
377     12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
378     Added python2.3 to the predict section/variable.
379    
380     28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
381     sandbox.h, sandbox_futils.c :
382     Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
383     it is not set, it will revert to its old value.
384    
385     27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
386     Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
387     rather than failing with a violation, bug #29748.
388    
389     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
390     Fix canonicalize() to ignore calls with path = "".
391    
392     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
393     sandbox_futils.c, canonicalize.c :
394     Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
395     call handled strings larger than PATH_MAX (bug #21766). It however does not
396     work the same on 2.4 kernels.
397    
398     To fix, I added the posix implementation of getcwd() (from glibc cvs) that
399     do not need the system call. We use the default getcwd() function via a
400     wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
401     means the current directory was removed, OR that the the system call for
402     getcwd failed (curious is that it do not fail and return NULL or set
403     errno, but rather just truncate the retured directory - usually from the
404     start), and if so, we use the generic getcwd() function (__egetcwd). Note
405     that we do not use the generic version all the time, as it calls lstat()
406     a great number of times, and performance degrade much.
407    
408     29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
409     libsandbox.c :
410     Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
411    
412     22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
413     create-localdecls :
414     When checking path names of files accessed, we need to canonicalize it, else
415     it may be a symlink in a 'write allowed' directory pointing to a file in a
416     directory we should not have write access to.
417    
418     With something like coreutils-5.0, we have two problems:
419     1) One of the tests checks if getcwd() can return a path longer than
420     PATH_MAX. This test then tries to create a dir which even while
421     created local (mkdir("conftest2")), it ends up being resolved with
422     a name that is much larger than PATH_MAX. The problem now is that
423     canonicalize() have undefined behaviour when the path was too long
424     (returned wrongly truncated paths, etc), and pass the wrong path to
425     before_syscall() (causing the bogus sandbox violations).
426     2) The ecanonicalize() function we used, along with the canonicalize()
427     function did not support longer than PATH_MAX. This is partly a
428     cause for 1), but the error checking (rather lack of it) of calls
429     to erealpath() in canonicalize() was the prime reason for 1).
430    
431     As we do not use this canonicalized name to call the function, we resolve this
432     by fixing canonicalize() to do better error checking, and ecanonicalize() as
433     well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
434     While they will resolve paths properly now, and can check if a write/read is
435     allowed, the functions called from the sandboxed environment will still work
436     as expected.
437    
438     This should resolve bug #21766.
439    
440     06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
441     For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
442     it (bug #16298).
443    
444     Problem is that for some reason locale fopen's locale.alias with mode "rm".
445    
446     -------------------------------------------------------
447     nosferatu root # grep fopen locale.log
448     fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
449     nosferatu root #
450     --------------------------------------------------------
451    
452     I checked the source of locale, but it have fopen with mode 'r', so
453     not sure where the "rm" mode comes from. Anyhow, changed the check in
454     before_syscall_open_char() to also see mode "rm" as readonly.
455    
456     23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
457    
458     Add glibc-2.3 support.
459    
460     22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
461    
462     Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
463     operations releated to preload, as well as only try to modify ld.so.preload
464     if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
465     not using ld.so.preload. Fix to not write this instance of sandbox's pid
466     to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
467    
468     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
469    
470     Changed the LD to CC for hppa.
471    
472     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
473    
474     Killed the previous changes I made.
475    
476     17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
477    
478     Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
479    
480     09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
481    
482     Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
483    
484     16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
485    
486     Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
487     for this fix.
488    
489     4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
490    
491     sandbox_futils defined a dirname() function that was masking the same
492     function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
493     '/usr/lib/portage/bi/'). Fixed function to return expected results and
494     renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
495     11231.
496    
497     4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
498    
499     Fix a segfault in libsandbox.c if canonicalize() was called with
500     first parameter = NULL.
501    
502     1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
503    
504     Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
505     cleanup() for this.
506    
507     Change cleanup() in sandbox.c not to exit with fail status if
508     the pidsfile is missing. We really should still display sandbox
509     violations if they occured.
510    
511     31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
512    
513     Update cleanup() in sandbox.c to remove the PIDSFILE if this is
514     the last sandbox running.
515    
516     25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
517    
518     Major cleanups to mainly libsandbox.c again.
519    
520     22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
521    
522     Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
523     parties involved should please contact me so that we can fix it.
524    
525     Add opendir wrapper to libsandbox.c.
526    
527     21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
528    
529     Do some more cleanups to ecanonicalize(), as it dropped filenames in
530     rare cases (after my symlink cleanups), and caused glibc to bork.
531     These fixes went into canonicalize.c.
532    
533     20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
534    
535     Fix spawn_shell() and main() in sandbox.c to properly return fail
536     status.
537    
538     19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
539    
540     The new canonicalize() function in libsandbox.c also resolved symlinks,
541     which caused on cleaning sandbox errors if the symlink pointed to a
542     file in the live root. Ripped out canonicalize() and realpath() from
543     glibc; removed the symlink stuff, and changed them to ecanonicalize()
544     and erealpath().
545    
546     18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
547    
548     Ripped out all the wrappers, and implemented those of InstallWatch.
549     Losts of cleanups and bugfixes. Implement a execve that forces
550     $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
551     /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
552     sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
553     parts; it now have an install target.
554    
555     Reformat the whole thing to look somewhat like the reworked sandbox.c
556     and new sandbox.h and sandbox_futils.c from:
557    
558     Brad House <brad@mainstreetsoftworks.com>.
559    
560     Additional Copyrights now due to the InstallWatch code:
561    
562     Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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