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Mon Nov 28 11:13:17 2005 UTC (9 years ago) by azarah
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Update contact email.  Fix quoting.
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 179 28 Nov 2005 Martin Schlemmer <azarah@gentoo.org> configure.in:
6    
7     Detect if we on 64bit arch automatically.
8    
9 azarah 180 Update contact email. Fix quoting.
10    
11 azarah 176 * sandbox-1.2.14 (2005/11/28)
12    
13 azarah 173 28 Nov 2005 Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
14 azarah 174 sandbox.c, sandbox.h, sandbox.bashrc:
15 azarah 172
16     Check generic getcwd()'s return as well for validity, bug #101728.
17    
18 azarah 173 Cleanup environ variables.
19    
20 azarah 174 Rather check SANDBOX_ACTIVE if we are already running. Set SANDBOX_ACTIVE
21     to readonly in sandbox.bashrc.
22    
23 azarah 175 Make sure we use our bashrc.
24    
25 azarah 170 01 Nov 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
26    
27     Do not pass mode to true_open and true_open64 if not needed. Should fix a
28     segfault in some cases.
29    
30 azarah 169 * sandbox-1.2.13 (2005/09/12)
31 azarah 167
32 azarah 166 12 Sep 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, libsandbox.c:
33 azarah 165
34     Do not handle adding working directory to SANDBOX_WRITE, as portage does it
35     itself.
36    
37 azarah 166 Make libsb_fini() do cleanup a bit more complete just in case we get another
38     uClibc 'call preloaded library fini before that of app' issue ... probably
39     will not help much, but we try.
40    
41 azarah 164 04 Sep 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
42    
43     Also allow symlink() system call to operate on a symlink in a writable path
44     that points to non-writable path, bug #104711.
45    
46 azarah 160 * sandbox-1.2.12 (2005/08/05)
47    
48 azarah 159 05 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
49     sandbox.h:
50 azarah 156
51     Do not give an access violation if the access() system call do not have
52     write/read access - it does not actually modify, so we only need to return
53     not being able to write/read. Noted by Andres Loeh <kosmikus@gentoo.org>,
54     bug #101433.
55    
56 azarah 157 If we are called from the command line, do not care about PORTAGE_TMPDIR,
57     and make the current directory the work directory. Also rename the variable
58     portage_tmp_dir to work_dir.
59    
60 azarah 158 Remove the tmp_dir variable - we do not need it.
61    
62 azarah 159 Improve error handling for get_sandbox_*_envvar() functions.
63    
64 azarah 153 01 Aug 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
65    
66     Still do normal log if debugging is requested.
67    
68 azarah 154 Add support for SANDBOX_VERBOSE (enabled by default). Adjust SANDBOX_DEBUG
69     to only enable if equal to "1" or "yes".
70    
71 azarah 155 Add /dev/tts to write permit, bug #42809.
72    
73 azarah 152 27 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
74     sandbox_futils.c:
75    
76     Do not resolve symlinks in PORTAGE_TMPDIR in sandbox .. we will handle that
77     in libsandbox .. bug #100309.
78    
79 azarah 151 22 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h:
80    
81     Print all logging to stderr, bug #90343, comment #15, by Zac Medico.
82    
83 azarah 149 * sandbox-1.2.11 (2005/07/14)
84    
85 azarah 148 14 July 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
86     Fix getcwd, bug #98419.
87    
88 azarah 145 08 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c,
89     libsandbox.c:
90 azarah 146 - Try to cleanup and make error handling/printing consistent.
91     - Remove old logs if present and conflicting with current.
92 azarah 147 - Fix compile error with previous change, and return rather then exit().
93 azarah 145
94 azarah 139 07 July 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
95     sandbox.h, sandbox_futils.c:
96     - Fix possible segfault in env init code.
97     - Major cleanup of sandbox_futils.c. Removed most of the functions as we now
98     write to /var/log/sandbox/, so in theory do not need all that.
99 azarah 140 - Redo the interface of the get_* functions so that we do not leak memory.
100 azarah 141 - Remove sandbox_dir and co - we are not using it anymore.
101 azarah 142 - Remove unused includes and variables.
102 azarah 143 - Only declare functions in sandbox_futils.c that are used in libsandbox.c when
103     OUTSIDE_LIBSANDBOX is not defined.
104 azarah 144 - Cleanup access/log printing. Make access printing honour NOCOLOR. Fix log
105     printing's last line not honouring NOCOLOR.
106 azarah 138
107 azarah 134 06 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.h, sandbox_futils.c,
108     libsandbox.c:
109     - Change log dir to /var/log/sandbox/. Make sure the sandboxed process cannot
110     write to it.
111 azarah 135 - Clean up logging in libsandbox.c, and hopefully make it more consistant.
112 azarah 136 - Add check_prefixes() with major cleanup on check_access().
113 azarah 137 - Cleanup init_env_entries() and check_prefixes().
114 azarah 134
115 azarah 133 05 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
116     sandbox_futils.c, libsandbox.c:
117     Remove unused 'pids file' code.
118    
119 azarah 128 * sandbox-1.2.10 (2005/07/03)
120    
121 azarah 126 03 July 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
122     Add PREDICT items for nss-db, bug #92079. Patch from Robin Johnson.
123    
124 azarah 123 17 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
125     General cleanups:
126     - Remove fooling around with exit codes - we error out on presence of a log
127     anyhow.
128 azarah 124 - Move get_sandbox_*_envvar() to sandbox_setup_environ(), as its more
129     appropriate there.
130 azarah 123
131 azarah 121 12 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
132     Cleanup the fail_nametoolong stuff a bit more.
133    
134 azarah 118 11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
135 azarah 120 Remove hopefully the last ld.so.preload bits we do not use anymore.
136    
137     11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
138 azarah 119 Remove the unneeded canonicalize() calls in the wrappers - we do it anyhow
139     in check_syscall(). Should speed things up a bit (at least for the getcwd()
140     and long path name test it goes down to under a second, and not 10+ seconds
141     like before). Also warn if we skip checking due to the canonicalized path
142     being too long.
143    
144     11 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
145 azarah 118 More comment/readability cleanups.
146    
147 azarah 117 10 June 2005; Martin Schlemmer <azarah@gentoo.org> canonicalize.c, getcwd.c,
148     sandbox_futils.c, libsandbox.c:
149     Some strncpy/strncat and other cleanups.
150    
151 azarah 115 * sandbox-1.2.9 (2005/06/09)
152    
153 azarah 114 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
154     Move symlink hack down a bit to try and minimize on the amount of lstat()
155     calls we do.
156    
157 azarah 113 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
158     Add hack to allow writing to /proc/self/fd (or /dev/fd), bug #91516.
159    
160 azarah 112 09 June 2005; Martin Schlemmer <azarah@gentoo.org> symbols.in, libsandbox.c:
161     Add wrapper for access() function, bug #85413.
162    
163 azarah 111 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c:
164     Use generic getcwd() implementation from uclibc - should be more portable
165     and looks a bit cleaner.
166    
167 azarah 110 09 June 2005; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c:
168     Make sure our true_* pointers are initialized to NULL, and that we check for
169     all references that they are valid.
170    
171 azarah 109 09 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
172     Be default we will fail if the path name we try to canonicalize is too long.
173     This however could cause issues with some things (bug #94630 and #21766), so
174     if fail_nametoolong == 0, canonicalize() will return a null length string and
175     do not fail.
176    
177 azarah 108 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c:
178     Do not abort if TMPDIR is not valid, but rather use '/tmp', bug #94360. Also
179     make sure we re-export the new TMPDIR environment variable.
180    
181 azarah 106 08 June 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
182     Fix incorrect free of non-malloc'd array, bug #92313 and #94020. Fix noted
183     by Marcus D. Hanwell <cryos@gentoo.org>.
184    
185 azarah 105 08 June 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
186     Add /dev/console to write list, bug #38588.
187    
188 azarah 102 * sandbox-1.2.8 (2005/05/13)
189    
190 azarah 99 13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
191 azarah 101 sandbox.h, sandbox_futils.c:
192     General cleanups.
193    
194     13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
195 azarah 100 sandbox.h:
196     Various LD_PRELOAD cleanups. Do not unset LD_PRELOAD for parent.
197    
198     13 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
199 azarah 99 sandbox.h, sandbox_futils.c:
200     Modify get_sandbox_pids_file(), get_sandbox_log() and get_sandbox_debug_log()
201     to use TMPDIR if present in environment.
202    
203 azarah 98 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
204     Remove sandbox_log_file from main() as its no longer used.
205    
206 azarah 97 13 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
207     sandbox_futils.c:
208     Add get_sandbox_debug_log(), and use it (add behaviour similar to SANDBOX_LOG
209     if already exported when sandbox started). Fix get_sandbox_log() and new
210     get_sandbox_debug_log() to not use already exported environment variables if
211     they have '/' in them. Use snprintf()'s instead of strncpy()'s. More
212     SB_PATH_MAX fixes.
213    
214 azarah 94 * sandbox-1.2.7 (2005/05/12)
215    
216 azarah 93 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
217     sandbox_futils.c:
218     More path limit fixes. Declare SB_BUF_LEN global and use it where needed.
219    
220 azarah 92 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
221     Fix paths limited to 255 chars. Fix get_sandbox_dir() returning a string
222     with '(null)' in it if we did not call sandbox with absolute path.
223    
224 azarah 89 12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
225 azarah 91 Set SANDBOX_ON *before* doing the child's env stuff, else its not set
226     for the child.
227    
228     12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
229 azarah 90 Remove global preload_adaptable as it is no longer used.
230    
231     12 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
232 azarah 89 Rewrite environment stuff to only be set when execve'ing the child process
233     to try and avoid issues like bug #91541 that causes sandbox to crash if
234     we set LD_PRELOAD sandbox side already.
235    
236 azarah 87 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
237 azarah 88 Move print_sandbox_log() up to make things neater.
238    
239     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
240 azarah 87 Remove load_preload_libs(), as its not used anymore.
241    
242 azarah 83 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
243 azarah 86 Remove NO_FORK stuff, as its not used, and 'strace -f' works just fine.
244    
245     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
246 azarah 84 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
247    
248     11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
249 azarah 83 Remove ld.so.preload crap - we are not going to use it again.
250    
251 azarah 82 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
252     Fix typo in code that checks if we got valid group information, causing a
253     segmentation fault, bug #91637.
254    
255 azarah 79 * sandbox-1.2.6 (2005/05/10)
256    
257 azarah 78 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
258     Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
259     for some odd reason, bug #91541.
260    
261 azarah 77 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
262     Fix typo (sizeof -> strlen).
263    
264 ferringb 76 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
265     rewrote the sbcontext caching code so it accounts for env changes since lib
266     initialization.
267    
268 azarah 75 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
269     We create libctest.c via configure, so no need to keep it around. Do some
270     cleanup related to libctest.c and libctest during configure.
271    
272 azarah 74 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
273     Add rename support of symlinks pointing to protected files/directories.
274    
275 azarah 72 * sandbox-1.2.5 (2005/05/04)
276    
277 azarah 71 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
278     sandbox.bashrc:
279     Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
280     already set, init of the env vars fails for some reason, so do this later on,
281     and do not warn (bug #91431).
282    
283 azarah 70 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
284     sandbox.bashrc:
285     Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
286    
287 azarah 68 * sandbox-1.2.4 (2005/05/03)
288    
289 azarah 66 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
290     Do not init the env entries with each call, as it creates too many calls to
291 azarah 67 lstat, etc. Should speedup things a bit, bug #91040.
292 azarah 66
293 azarah 65 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
294     Add /dev/pty to default write list. Noticed by Morfic.
295    
296 vapier 62 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
297     sandbox.h:
298     uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
299     exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
300    
301 azarah 59 * sandbox-1.2.3 (2005/04/29)
302    
303 azarah 56 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
304     Do not check for (*&#$(* CXX or F77.
305    
306 azarah 54 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
307     Do not append '/' to pathname in filter_path() if it already ends with it.
308    
309 vapier 53 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
310     With az's help, clean up autotools to work with cross-compiling.
311    
312 azarah 59 * sandbox-1.2.2 (2005/04/28)
313 azarah 48
314 azarah 47 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
315     Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
316     have issues; bug #90592.
317    
318 azarah 59 * sandbox-1.2.1 (2005/04/23)
319 azarah 44
320 azarah 43 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
321     getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
322     Make sure all functions used in libsandbox.c is declared static. Define
323     SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
324     linking with its object. Hopefully this will fix bug #90153.
325    
326 azarah 59 * sandbox-1.2 (2005/04/23)
327 azarah 46
328 azarah 40 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
329     Allow lchown a symlink in write-allowed path pointing to write-denied
330     target.
331    
332 genone 39 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
333     Also show resolved symlink names in the log.
334    
335 azarah 37 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
336     Seems -nostdlib was the problem with the constructor/destructor - remove it
337     from Makefile.am, and change the constructor/destructor names again.
338    
339 azarah 36 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
340     Also rename the _init() and _fini() declarations.
341    
342 azarah 35 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
343     Fixup the constructor/destructor function names again (they should be _init()
344     and _fini() it seems, and not being called caused sandbox_lib_path to be
345     unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
346     Add both the path in given SANDBOX_x variable, as well as its symlink
347     resolved path in init_env_entries(). Modify filter_path() to be able to
348     resolve paths without resolving symlinks, as well as to be able to resolve
349     symlinks. Fix a possible segfault in check_access(). Add symlink resolving
350     to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
351     for bug #31019 cause access violations if we try to remove a symlink that is
352     not in protected path, but points to a protected path. Fix a memory leak in
353     sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
354     (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
355     (pid_string was uninitialized). General syntax cleanups.
356    
357 ferringb 34 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
358     infamous "pids file is not a regular file" w/out newline bug.
359    
360 ferringb 33 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
361     Correct libc_version path detection, since it was screwing up if libdir !=
362     "/lib/".
363    
364     02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
365 azarah 32 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
366    
367 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
368 azarah 31 Fix symbols.in not added to dist.
369    
370 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
371 azarah 30 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
372     White space fixes.
373    
374 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
375 azarah 30 configure.in, getcwd.c, libsandbox.c, symbols.in:
376 azarah 29 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
377     getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
378     for glibc and other libc's that use this. Update libsandbox.c to use these
379     symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
380     process unset it.
381    
382 ferringb 33 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
383 ferringb 28 killed off _init and _fini in favor of
384     void __attribute__ ((constructor)) init_func and
385     void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
386    
387 ferringb 26 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
388     canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
389     having the hick-ups.
390    
391 ferringb 24 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
392     Makefile.am: Fixed compilation.
393    
394 ferringb 18 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
395     Gutted the bugger so it stops checking for a c++ and fortran compiler.
396     Do *not* regenerate aclocal.m4 for making a release until a better
397     solution is created.
398    
399 ferringb 16 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
400     Removal of more hardcoded paths.
401    
402 ferringb 13 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
403     sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
404    
405     19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
406 ferringb 6 Sandbox is now autotooled, create-localdecls needs to be killed and the code
407     shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
408     are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
409     To get to a point of testing, automake && autoconf; created requisite files w/
410     a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
411     /lib and /usr/lib/portage/bin.
412    
413 ferringb 2 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
414     closing out bug #70225, potential overflow of the sandbox_pids_file var.
415    
416     07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
417     (think it was at least) allows intermixing of code and data segments. bug #70351
418     should be fixed by this.
419    
420     03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
421     futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
422    
423     02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
424     Seth Robertson that tracked down all adjuct flags for read operations that
425     do not invoke a write operation.
426    
427     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
428     Another fix from jstubbs regarding a free() on a stack variable for the
429     environment -- tracking now prevents extraneous free()'s segfault.
430    
431     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
432     J. Stubbs tracked down a new bug where mkdir was failing to the patch on
433     the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
434     Also remove the errno = ESUCCESS settings as documentation points out that
435     a library isn't allowed to do that.
436    
437     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
438     file_security_check() function to check random potential exploits on files
439     that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
440     the 'system-crippling' exploits (bug 21923) and catches a few other
441     potential problems.
442    
443     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
444     32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
445    
446     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
447     bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
448     Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
449    
450     29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
451     Fix permissions and group of pids file and logs. Permissions should be 0664
452     and group should be 'portage'. Bug #34260.
453    
454     28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
455     Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
456     to the real execve (in our execve wrapper). Seems that on some arches (sparc
457     among others) do not allow us to tamper with the readonly copy passed to
458     execve, so pass our own copy of the environment. Bug #42290.
459    
460     11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
461     Changed tail to head and added a notice about duration of glibc check.
462    
463     21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
464     Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
465     as there isn't a guarentee that it is dynamic.
466    
467     02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
468     If 'file' passed to before_syscall(const char *func, const char *file) is
469     invalid, we should set errno to ENOENT, and not EINVAL. This should
470     close bug #32238.
471    
472     14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
473     Fix a bug that occurs mainly on 64bit arch, where the file passed to
474     the functions we wrap, is invalid, and then cause canonicalize to pass
475     garbage to before_syscall(), thanks to great detective work from
476     Andrea Luzzardi <al@sig11.org> (bug #29846).
477    
478     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
479     Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
480    
481     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
482     Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
483     only checked the destination patch, and not the source, so we could move
484     a protected file to a unprotected directory, and then delete/modify it.
485     Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
486    
487     12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
488     Added python2.3 to the predict section/variable.
489    
490     28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
491     sandbox.h, sandbox_futils.c :
492     Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
493     it is not set, it will revert to its old value.
494    
495     27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
496     Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
497     rather than failing with a violation, bug #29748.
498    
499     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
500     Fix canonicalize() to ignore calls with path = "".
501    
502     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
503     sandbox_futils.c, canonicalize.c :
504     Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
505     call handled strings larger than PATH_MAX (bug #21766). It however does not
506     work the same on 2.4 kernels.
507    
508     To fix, I added the posix implementation of getcwd() (from glibc cvs) that
509     do not need the system call. We use the default getcwd() function via a
510     wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
511     means the current directory was removed, OR that the the system call for
512     getcwd failed (curious is that it do not fail and return NULL or set
513     errno, but rather just truncate the retured directory - usually from the
514     start), and if so, we use the generic getcwd() function (__egetcwd). Note
515     that we do not use the generic version all the time, as it calls lstat()
516     a great number of times, and performance degrade much.
517    
518     29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
519     libsandbox.c :
520     Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
521    
522     22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
523     create-localdecls :
524     When checking path names of files accessed, we need to canonicalize it, else
525     it may be a symlink in a 'write allowed' directory pointing to a file in a
526     directory we should not have write access to.
527    
528     With something like coreutils-5.0, we have two problems:
529     1) One of the tests checks if getcwd() can return a path longer than
530     PATH_MAX. This test then tries to create a dir which even while
531     created local (mkdir("conftest2")), it ends up being resolved with
532     a name that is much larger than PATH_MAX. The problem now is that
533     canonicalize() have undefined behaviour when the path was too long
534     (returned wrongly truncated paths, etc), and pass the wrong path to
535     before_syscall() (causing the bogus sandbox violations).
536     2) The ecanonicalize() function we used, along with the canonicalize()
537     function did not support longer than PATH_MAX. This is partly a
538     cause for 1), but the error checking (rather lack of it) of calls
539     to erealpath() in canonicalize() was the prime reason for 1).
540    
541     As we do not use this canonicalized name to call the function, we resolve this
542     by fixing canonicalize() to do better error checking, and ecanonicalize() as
543     well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
544     While they will resolve paths properly now, and can check if a write/read is
545     allowed, the functions called from the sandboxed environment will still work
546     as expected.
547    
548     This should resolve bug #21766.
549    
550     06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
551     For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
552     it (bug #16298).
553    
554     Problem is that for some reason locale fopen's locale.alias with mode "rm".
555    
556     -------------------------------------------------------
557     nosferatu root # grep fopen locale.log
558     fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
559     nosferatu root #
560     --------------------------------------------------------
561    
562     I checked the source of locale, but it have fopen with mode 'r', so
563     not sure where the "rm" mode comes from. Anyhow, changed the check in
564     before_syscall_open_char() to also see mode "rm" as readonly.
565    
566     23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
567    
568     Add glibc-2.3 support.
569    
570     22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
571    
572     Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
573     operations releated to preload, as well as only try to modify ld.so.preload
574     if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
575     not using ld.so.preload. Fix to not write this instance of sandbox's pid
576     to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
577    
578     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
579    
580     Changed the LD to CC for hppa.
581    
582     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
583    
584     Killed the previous changes I made.
585    
586     17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
587    
588     Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
589    
590     09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
591    
592     Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
593    
594     16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
595    
596     Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
597     for this fix.
598    
599     4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
600    
601     sandbox_futils defined a dirname() function that was masking the same
602     function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
603     '/usr/lib/portage/bi/'). Fixed function to return expected results and
604     renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
605     11231.
606    
607     4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
608    
609     Fix a segfault in libsandbox.c if canonicalize() was called with
610     first parameter = NULL.
611    
612     1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
613    
614     Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
615     cleanup() for this.
616    
617     Change cleanup() in sandbox.c not to exit with fail status if
618     the pidsfile is missing. We really should still display sandbox
619     violations if they occured.
620    
621     31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
622    
623     Update cleanup() in sandbox.c to remove the PIDSFILE if this is
624     the last sandbox running.
625    
626     25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
627    
628     Major cleanups to mainly libsandbox.c again.
629    
630     22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
631    
632     Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
633     parties involved should please contact me so that we can fix it.
634    
635     Add opendir wrapper to libsandbox.c.
636    
637     21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
638    
639     Do some more cleanups to ecanonicalize(), as it dropped filenames in
640     rare cases (after my symlink cleanups), and caused glibc to bork.
641     These fixes went into canonicalize.c.
642    
643     20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
644    
645     Fix spawn_shell() and main() in sandbox.c to properly return fail
646     status.
647    
648     19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
649    
650     The new canonicalize() function in libsandbox.c also resolved symlinks,
651     which caused on cleaning sandbox errors if the symlink pointed to a
652     file in the live root. Ripped out canonicalize() and realpath() from
653     glibc; removed the symlink stuff, and changed them to ecanonicalize()
654     and erealpath().
655    
656     18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
657    
658     Ripped out all the wrappers, and implemented those of InstallWatch.
659     Losts of cleanups and bugfixes. Implement a execve that forces
660     $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
661     /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
662     sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
663     parts; it now have an install target.
664    
665     Reformat the whole thing to look somewhat like the reworked sandbox.c
666     and new sandbox.h and sandbox_futils.c from:
667    
668     Brad House <brad@mainstreetsoftworks.com>.
669    
670     Additional Copyrights now due to the InstallWatch code:
671    
672     Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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