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2015-03-17bdfReadProperties: property count needs range check [CVE-2015-1802]Alan Coopersmith1-1/+3
Avoid integer overflow or underflow when allocating memory arrays by multiplying the number of properties reported for a BDF font. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Julien Cristau <jcristau@debian.org>
2015-02-26Set close-on-exec for font file I/O.Christos Zoulas2-6/+11
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com> Signed-off-by: Thomas Klausner <wiz@NetBSD.org>
2014-11-05Use 'imdent' to realign cpp indentation levels in fslibos.hAlan Coopersmith1-109/+109
Parts were indented, others weren't, now is more consistent. 'git diff -w' shows no non-whitespace changes in this commit Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2014-11-05Remove unneeded checks for #ifndef X_NOT_POSIXAlan Coopersmith1-2/+0
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2014-06-27Make shared library work on Cygwin/MinGWYaakov Selkowitz25-28/+182
Weak symbols on PE platforms do not work the same way as on ELF platforms, hence we have been unable to have a fully functional shared libXfont until now. This patch works around these issues so that we can fix that. In summary, only when compiling shared libraries on NO_WEAK_SYMBOLS platforms, when the first stub is called, the invoking program is first checked to determine if it exports the stubbed functions. Then, for every stub call, if the function is exported by the loader, it is called instead of the stub code. serverClient and serverGeneration are data pointers, and therefore are replaced by getter functions. ErrorF is variadic, so the override is routed through VErrorF instead. FatalError has no va_list equivalent, but it is not actually used in libXfont and therefore should be safe to remove. This requires all X servers to export their symbols, which requires forthcoming patches for hw/xwin and xfs; the other xservers (including tigervnc) already do this via LD_EXPORT_SYMBOLS_FLAG. Signed-off-by: Yaakov Selkowitz <yselkowitz@users.sourceforge.net> Reviewed-by: Colin Harrison <colin.harrison@virgin.net> Acked-by: Alan Coopersmith <alan.coopersmith@oracle.com> Tested-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
2014-05-23Use default glyphs when getting 16-bit font with 8-bit textKeith Packard1-1/+5
When accessing a 16-bit font with firstRow > 0 with 8-bit text, check to see if the font has a default character and return that for every incoming character. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2014-05-23Don't build unused code in bitmapfunc.c if all bitmap formats are disabledAlan Coopersmith1-0/+15
If the only bitmaps we support are builtins, don't need the code to register all the bitmap font file handlers. Fixes gcc warnings: bitmapfunc.c:110:1: warning: 'BitmapOpenBitmap' defined but not used [-Wunused-function] BitmapOpenBitmap (FontPathElementPtr fpe, FontPtr *ppFont, int flags, ^ bitmapfunc.c:155:1: warning: 'BitmapGetInfoBitmap' defined but not used [-Wunused-function] BitmapGetInfoBitmap (FontPathElementPtr fpe, FontInfoPtr pFontInfo, ^ Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Rémi Cardona <remi@gentoo.org>
2014-05-23Don't compile bitmap source files for disabled formatsAlan Coopersmith1-7/+17
pcfread.c is a special case - it's needed for either reading pcf files from disk (--enable-pcfformat) or from the builtin fonts in memory (--enable-builtins), so needed a new AM_CONDITIONAL case. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Rémi Cardona <remi@gentoo.org>
2014-05-23Drop imake/monolithic compatibility #define mappingAlan Coopersmith2-32/+0
Require the #defines from configure.ac now that we're not sharing source with the imake builds any longer. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Rémi Cardona <remi@gentoo.org>
2014-05-12CVE-2014-0210: unvalidated length fields in fs_read_list_info()Alan Coopersmith1-0/+54
fs_read_list_info() parses a reply from the font server. The reply contains a number of additional data items with embedded length or count fields, none of which are validated. This can cause out of bound reads when looping over these items in the reply. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2014-05-12CVE-2014-0210: unvalidated length fields in fs_read_list()Alan Coopersmith1-0/+15
fs_read_list() parses a reply from the font server. The reply contains a list of strings with embedded length fields, none of which are validated. This can cause out of bound reads when looping over the strings in the reply. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2014-05-12CVE-2014-0210: unvalidated length fields in fs_read_glyphs()Alan Coopersmith1-1/+28
fs_read_glyphs() parses a reply from the font server. The reply contains embedded length fields, none of which are validated. This can cause out of bound reads when looping over the glyph bitmaps in the reply. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
2014-05-12CVE-2014-0210: unvalidated length fields in fs_read_extent_info()Alan Coopersmith1-0/+10
Looping over the extents in the reply could go past the end of the reply buffer if the reply indicated more extents than could fit in the specified reply length. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
2014-05-12CVE-2014-0211: integer overflow in fs_alloc_glyphs()Alan Coopersmith1-1/+6
fs_alloc_glyphs() is a malloc wrapper used by the font code. It contains a classic integer overflow in the malloc() call, which can cause memory corruption. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
2014-05-12CVE-2014-0211: integer overflow in fs_read_extent_info()Alan Coopersmith1-1/+11
fs_read_extent_info() parses a reply from the font server. The reply contains a 32bit number of elements field which is used to calculate a buffer length. There is an integer overflow in this calculation which can lead to memory corruption. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
2014-05-12CVE-2014-0210: unvalidated length fields in fs_read_query_info()Alan Coopersmith2-0/+46
fs_read_query_info() parses a reply from the font server. The reply contains embedded length fields, none of which are validated. This can cause out of bound reads in either fs_read_query_info() or in _fs_convert_props() which it calls to parse the fsPropInfo in the reply. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
2014-05-12CVE-2014-0211: Integer overflow in fs_get_reply/_fs_start_readAlan Coopersmith1-0/+18
fs_get_reply() would take any reply size, multiply it by 4 and pass to _fs_start_read. If that size was bigger than the current reply buffer size, _fs_start_read would add it to the existing buffer size plus the buffer size increment constant and realloc the buffer to that result. This math could overflow, causing the code to allocate a smaller buffer than the amount it was about to read into that buffer from the network. It could also succeed, allowing the remote font server to cause massive allocations in the X server, possibly using up all the address space in a 32-bit X server, allowing the triggering of other bugs in code that fails to handle malloc failure properly. This patch protects against both problems, by disconnecting any font server trying to feed us more than (the somewhat arbitrary) 64 mb in a single reply. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
2014-05-12CVE-2014-0210: unvalidated lengths when reading replies from font serverAlan Coopersmith1-6/+38
Functions to handle replies to font server requests were casting replies from the generic form to reply specific structs without first checking that the reply was at least as long as the struct being cast to. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
2014-05-12CVE-2014-0210: unvalidated length in _fs_recv_conn_setup()Alan Coopersmith1-2/+18
The connection setup reply from the font server can include a list of alternate servers to contact if this font server stops working. The reply specifies a total size of all the font server names, and then provides a list of names. _fs_recv_conn_setup() allocated the specified total size for copying the names to, but didn't check to make sure it wasn't copying more data to that buffer than the size it had allocated. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
2014-05-12CVE-2014-0209: integer overflow of realloc() size in lexAlias()Alan Coopersmith1-0/+4
lexAlias() reads from a file in a loop. It does this by starting with a 64 byte buffer. If that size limit is hit, it does a realloc of the buffer size << 1, basically doubling the needed length every time the length limit is hit. Eventually, this will shift out to 0 (for a length of ~4gig), and that length will be passed on to realloc(). A length of 0 (with a valid pointer) causes realloc to free the buffer on most POSIX platforms, but the caller will still have a pointer to it, leading to use after free issues. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
2014-05-12CVE-2014-0209: integer overflow of realloc() size in FontFileAddEntry()Alan Coopersmith1-0/+5
FontFileReadDirectory() opens a fonts.dir file, and reads over every line in an fscanf loop. For each successful entry read (font name, file name) a call is made to FontFileAddFontFile(). FontFileAddFontFile() will add a font file entry (for the font name and file) each time it’s called, by calling FontFileAddEntry(). FontFileAddEntry() will do the actual adding. If the table it has to add to is full, it will do a realloc, adding 100 more entries to the table size without checking to see if that will overflow the int used to store the size. Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
2014-04-24fs_send_open_font needs to allow namelen of 0 when FontReopen is setAlan Coopersmith1-1/+1
When _fs_load_glyphs calls fs_send_open_font with FontReopen set, it passes a NULL name and namelen of 0, since fs_send_open_font is going to reuse the previous name. This overly restrictive check was added in XFree86 4.3.99.12: http://cvsweb.xfree86.org/cvsweb/xc/lib/font/fc/fserve.c.diff?r1=3.23&r2=3.24 http://cvsweb.xfree86.org/cvsweb/xc/lib/font/fc/fserve.c?rev=3.24&content-type=text/vnd.viewcvs-markup Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2014-04-23Clean up warnings when src/fc is built with -DDEBUGAlan Coopersmith1-3/+1
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2014-04-23Allow enabling src/fc DEBUG helpers via CPPFLAGSAlan Coopersmith1-1/+2
Instead of editing fsio.h to turn on debugging logs, just add -DDEBUG to CPPFLAGS when building. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2014-04-21Check if pointer returned by BufFileCreate is NULL before writing to itAlan Coopersmith1-2/+4
Fixes clang analyzer warning: bufio.c:165:13: warning: Access to field 'bufp' results in a dereference of a null pointer (loaded from variable 'f') f->bufp = f->buffer; ~ ^ Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Thomas Klausner <wiz@NetBSD.org>
2014-04-11Fix buffer read overrunPeter Harris1-1/+1
"FreeType" is only eight bytes long. The atom "FreeType\x00\x??" is probably not what the author intended. Signed-off-by: Peter Harris <pharris@opentext.com> Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2014-01-29Warning fixes.Keith Packard13-46/+52
Many const char issues. One extra 'i' declared in ScaleFont; we can just use the same 'i' as exists at the top level scope. Also ignore bad-function-cast in ftfuncs.c and bitscale.c because we're casting the return value from floor or ceil from double to int. As floor and ceil are kinda designed to generate integer results, it's pretty clear that we're doing what we want and that the compiler is generating noise. I'm not sure why bad-function-cast is ever a good warning to turn on, but I'll leave that for another day. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Gaetan Nadon <memsize@videotron.ca>
2014-01-08Remove redundant setting of 'len' in SPropRecValList_add_by_font_capAlan Coopersmith1-1/+0
Found by cppcheck 1.63: [FreeType/xttcap.c:621] -> [FreeType/xttcap.c:624]: (performance) Variable 'len' is reassigned a value before the old one has been used. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
2014-01-08Initialize (unused) data field in fsListCataloguesReq before sending it.Alan Coopersmith1-0/+1
Quiets cppcheck 1.63 warning: [fc/fserve.c:2972]: (error) Uninitialized variable: lcreq Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
2014-01-08Remove redundant declaration of FontFileStartListFonts()Alan Coopersmith1-5/+0
Fixes gcc warning: catalogue.c:336:1: warning: redundant redeclaration of 'FontFileStartListFonts' [-Wredundant-decls] In file included from ../../include/X11/fonts/fntfilst.h:40:0, from catalogue.c:32: ../../include/X11/fonts/fntfil.h:92:12: note: previous declaration of 'FontFileStartListFonts' was here Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
2014-01-08Fix unused variable 'dir' warningsAlan Coopersmith2-7/+0
catalogue.c: In function 'CatalogueOpenFont': catalogue.c:290:22: warning: variable 'dir' set but not used [-Wunused-but-set-variable] catalogue.c: In function 'CatalogueListFonts': catalogue.c:324:22: warning: variable 'dir' set but not used [-Wunused-but-set-variable] fpe.c: In function 'BuiltinResetFPE': fpe.c:57:22: warning: variable 'dir' set but not used [-Wunused-but-set-variable] Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
2013-12-30Limit additional sscanf strings to fit buffer sizesAlan Coopersmith1-3/+11
None of these could currently result in buffer overflow, as the input and output buffers were the same size, but adding limits helps ensure we keep it that way, if we ever resize any of these in the future. Fixes cppcheck warnings: [lib/libXfont/src/bitmap/bdfread.c:547]: (warning) scanf without field width limits can crash with huge input data. [lib/libXfont/src/bitmap/bdfread.c:553]: (warning) scanf without field width limits can crash with huge input data. [lib/libXfont/src/bitmap/bdfread.c:636]: (warning) scanf without field width limits can crash with huge input data. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu> Reviewed-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
2013-12-30CVE-2013-6462: unlimited sscanf overflows stack buffer in bdfReadCharacters()Alan Coopersmith1-1/+1
Fixes cppcheck warning: [lib/libXfont/src/bitmap/bdfread.c:341]: (warning) scanf without field width limits can crash with huge input data. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Matthieu Herrb <matthieu@herrb.eu> Reviewed-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
2013-12-13Don't leak old allocation if realloc fails to enlarge itAlan Coopersmith2-11/+18
In ftfuncs.c, since the buffer being reallocated is a function local buffer, used to accumulate data for a single run of the function and then freed at the end of the function, we just free the old buffer if realloc fails. In atom.c however, the ReverseMap is a static buffer, so we operate in temporary variables until we know we're successful, then update the static variables. If we fail, we leave the old static variables in place, since they contain data about previous atoms we should maintain, not lose. Reported by cppcheck: [lib/libXfont/src/FreeType/ftfuncs.c:2122]: (error) Common realloc mistake: 'ranges' nulled but not freed upon failure [lib/libXfont/src/util/atom.c:126]: (error) Common realloc mistake: 'reverseMap' nulled but not freed upon failure Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2013-11-22Make serverGeneration unsignedJulien Cristau1-1/+1
Makes the definition match other declarations, and xserver's definition. Debian bug#689439 Reported-by: Michael Tautschnig <mt@debian.org> Signed-off-by: Julien Cristau <jcristau@debian.org> Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2013-11-01Replace malloc(strlen)+strcpy/strcat calls with strdupAlan Coopersmith3-12/+5
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2013-11-01xstrdup -> strdupAlan Coopersmith3-31/+2
Missed in xalloc -> malloc etal conversion in 0cdc9b8f850342 Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
2013-06-24Require ANSI C89 pre-processor, drop pre-C89 token pasting supportAlan Coopersmith1-5/+0
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2013-06-02Protect config.h inclusion with ifdef HAVE_CONFIG_H, like usual.Thomas Klausner1-0/+2
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2013-01-16Replace deprecated Automake INCLUDES variable with AM_CPPFLAGSAlan Coopersmith7-9/+9
Excerpt https://lists.gnu.org/archive/html/automake/2012-12/msg00038.html - Support for the long-deprecated INCLUDES variable will be removed altogether in Automake 1.14. The AM_CPPFLAGS variable should be used instead. This variable was deprecated in Automake releases prior to 1.10, which is the current minimum level required to build X. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-12-07catalogue: Fix obvious thinkoAdam Jackson1-1/+1
Signed-off-by: Adam Jackson <ajax@redhat.com>
2012-10-29Omit catalogue support on systems without symlinksYaakov Selkowitz2-0/+6
Signed-off-by: Yaakov Selkowitz <yselkowitz@users.sourceforge.net> Reviewed-by: Colin Harrison <colin.harrison@virgin.net> Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>
2012-08-24If socket is interrupted with signal EINTR, re-attempt read.Arvind Umrao1-2/+5
If socket is getting interrupted with signal EINTR, we should keep socket in progress state. I have borrowed following code from socket write _fs_flush():line274 . I have done exactly same at _fs_fill(). Socket write will not close the connection and re attempt to read buffer. Signed-off-by: Arvind Umrao <arvind.umrao@oracle.com> Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2011-11-11Use * precision notation instead of computing sprintf format stringsAlan Coopersmith1-11/+5
Allows gcc to check format strings instead of just warning about them Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-11-11Fix printf warnings about incorrect argument typesAlan Coopersmith5-27/+41
Mostly due to difference between sizeof & int on 64-bit platforms Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-11-11Add _X_ATTRIBUTE_PRINTF to *Error/*Warning functions taking printf formatsAlan Coopersmith1-1/+1
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-11-11Add const attributes to fix gcc -Wwrite-strings warningsAlan Coopersmith10-22/+22
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-10-10Support compress files with maxbits < 12Tomas Hoger1-12/+2
The compress decompression code used by libXfont rejects valid archives with maxbits less than 12 (compress allows values 9 - 16, 16 is the default). This is because maxbits-12 is used as index to hsize_table[]. That looks like an incorrect port of the original compress code, where: - hsize depended on BITS, the maximum maxbits value supported by particular build, rather than on maxbits value from the particular input file - the same hsize was used for all BITS <= 12 The quick way to verify the problem is: compress -b 11 fontfile.bdf bdftopcf -o /dev/null fontfile.bdf.Z which fails, while 12-16 works correctly. This fix removes hsize_table and uses 1 << maxbits (aka maxmaxcode) as tab_prefix size. As decompression code does not use hashing as compression code, there does not seem to be a reason to allocate any extra space. Note: In this fix, maxbits == 9 is still rejected early. AFAICS compress is able to generate such files (unknown how correct such output is), but is unable to uncompress them correctly. Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-09-18libxfont: An uninitialized pointer causes a crash if pcf header is corrupted.Olli Vertanen1-0/+2
If pcfReadTOC() or pcfGetProperties() fail in the beginning of execution of pcfReadFont(), function tries to free an uninitialized pointer (isStringProp) when bailing out. The pointer gets now initialized correctly. Signed-off-by: Olli Vertanen <olli.vertanen@symbio.com> Reviewed-by: Rami Ylimäki <rami.ylimaki@vincit.fi>
2011-09-18Fix empty statement in if conditional.Joerg Sonnenberger1-1/+1
Assume for a moment that the intention here is to do something useful. Signed-off-by: Matthieu Herrb <matthieu.herrb@laas.fr>
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