Grx

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559 discussions

[PATCH] Small bug in grxprint.c
by Andris Pavenis 30 Oct '03

30 Oct '03

valgrind showed a small bug in addons/grxprint.c which causes reading 1 byte directly before allocated memory due to wrong order of conditions in while loop. Perhaps it's rather harmless, but should be fixed anyway. Andris --- grx246/addons/print/grxprint.c~2 2002-02-11 00:27:30.000000000 +0200 +++ grx246/addons/print/grxprint.c 2003-10-30 20:18:53.000000000 +0200 @@ -980,7 +980,7 @@ void LaserPrint ( struct _DST * DSTPtr S = Buf + RowBytes; FullCount = RowBytes; - while (*(--S)==0 && FullCount>0) FullCount--; + while (FullCount>0 && *(--S)==0) FullCount--; /* Versuchen die Zeile nach Algorithmus 2 (TIFF Pacbits) zu */ /* komprimieren. Abgeschickt wird dann der kuerzere der beiden */

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Re: Patent demonstration
by Frank Heckenbach 17 Sep '03

17 Sep '03

Mirsad Todorovac wrote: > On Tue, 16 Sep 2003, Eike Lange wrote: > > > Hi Folks! > > (Sorry for the cross post) > > > > Tomorrow starts the second netwide demonstration against software > > patents. (http://swpat.ffii.org/index.en.html) > > > > I'd like to replace the index page at http://grx.gnu.de and > > http://www.gnu-pascal.{de,org} with a page similar to > > http://www.gnu.org. > > > > This time, the page should last until 24th of september. > > > > Any objections? > > > > It would be nice, if you could contribute with your own pages. > > Do you have any ethical objections that I patent my initials, TM, and sue > everybody who uses them on their products for royalty? You're confusing patens with trademarks I think. (Which is not to say that also trademarks can't be abused in unethical ways -- if interested, search for "Gravenreuth" and/or "Mobilix". You'll probably find a lot, mostly in German, but probably also things in English.) Frank -- Frank Heckenbach, frank(a)g-n-u.de http://fjf.gnu.de/ GnuPG and PGP keys: http://fjf.gnu.de/plan (7977168E)

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Patent demonstration
by Eike Lange 16 Sep '03

16 Sep '03

Hi Folks! (Sorry for the cross post) Tomorrow starts the second netwide demonstration against software patents. (http://swpat.ffii.org/index.en.html) I'd like to replace the index page at http://grx.gnu.de and http://www.gnu-pascal.{de,org} with a page similar to http://www.gnu.org. This time, the page should last until 24th of september. Any objections? It would be nice, if you could contribute with your own pages. Eike -- http://www.gnushi.de

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dga driver version 2
by Dimitar Zhekov 01 Sep '03

01 Sep '03

Hi. Version 2 of the libGRX DGA2 driver. Features set mode via DGA2 and rendering via Xlib or linear framebuffer. Incremential, apply after xfdga-small-changes (fuzz 1). -- E-gards: Jimmy

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Online Demo against Software Patents
by Eike Lange 26 Aug '03

26 Aug '03

Hi Folks! I'd like to replace the index page of GRX and GPC with a small notice about the online demo. Please see http://www.ffii.org for an example. This page should last until thursday or friday of this week. Please feel free to contribute to this demo with your own websites. Are there any objections? Eike -- "Freie Software braucht Freie Dokumentation." Das GNU-Pascal Buch! http://www.gnu-pascal.de/~eike/

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Re: demogrx security issue
by Mariano Alvarez Fernandez 19 Aug '03

19 Aug '03

Thanks for the info. Anyway I think demogrx is only a demo, but is good to know about this problem. Thanks again, and feel free to post about your project to the grx mailing list. M.Alvarez fabio wrote: > Hi, i've been interested in using grx libraries to make a media station > (something like the FreeVo Project, http://freevo.sourceforge.net/). I've > find a security issue in the demogrx test binary. If i want to use the svga > driver, the readme say that i must setuid the test programs to make them > work. In demogrx.c there is an invocation of system(): > > (line 402): > for (i = 0; i < NDEMOS; i++) { > if (ev->p1 == ptable[i].cid) { > gfaz_fin(); > #if defined(__MSDOS__) || defined(__WIN32__) > if (ev->p1 == ID_MODETEST) > strcpy(nprog, "..\\bin\\"); > else > strcpy(nprog, ".\\"); > #else > if (ev->p1 == ID_MODETEST) > strcpy(nprog, "../bin/"); > else > strcpy(nprog, "./"); > #endif > #if defined(__XWIN__) > strcat(nprog, "x"); > #endif > strcat(nprog, ptable[i].prog); > system(nprog); > :(line 420) > > This is extracted from the system(3) man page: > > Do not use system() from a program with suid or sgid privileges, > because strange values for some environment variables might be used to > subvert system integrity. Use the exec(3) family of functions instead, > but not execlp(3) or execvp(3). system() will not, in fact, work prop- > erly from programs with suid or sgid privileges on systems on which > /bin/sh is bash version 2, since bash 2 drops privileges on startup. > (Debian uses a modified bash which does not do this when invoked as > sh.) > > In poor words, a user can (for example) make a > ln -s /bin/sh rgbtest , > then execute the demogrx program, click on "Rgbtest" and he will gain a root > shell. I've tried it on Knoppix 3.1, Slackware 9.0, and it works. > The solution is to use the exec(3) family of functions. > > Good work for the library, i've find it very useful to write quickly graphical > applications. I will notice you when my media station will be ready, if you > like :-) > > Fabio Bas >

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xfdga small changes
by Dimitar Zhekov 11 Aug '03

11 Aug '03

I understimated XFree86/DGA, it can now work with LOTS of modes. Mariano, please state that the DGA2 driver is not experimental any more. Now that DGA/DGA2 is stable, I fully tested it and found no errors. It would be nice to have a non-root mode of the driver/grx, using DGA2 to set modes and XLib (i.e. fd_xwin.c) doing all drawing. I'll try to write it. -- E-gards: Jimmy

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speedtst batch mode
by Dimitar Zhekov 11 Aug '03

11 Aug '03

Hi. A batch mode for speedtst. Usage: run speedtst to see the mode numbers, then "time speedtst MODE" or [4dos] "timer ^ speedtst ^ timer". Maybe "first" should be named "prompt". -- E-gards: Jimmy

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mingw dll support for grx247p1?
by Dimitar Zhekov 19 Jul '03

19 Jul '03

Hi. Now that grx246 (stable) is out, how about including the MinGW dll support in 2.4.7pre1? You can find it as "mingw DLL support", attachment <mingw-dll-supp.zip>, it applies to grx246 with 1 line offset in makedefs.grx - or I can re-diff/send it together with a slightly updated comment. -- E-gards: Jimmy

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Announce: GRX 2.4.6
by Mariano Alvarez Fernandez 17 Jul '03

17 Jul '03

Hi, all. GRX 2.4.6 released. Download it from the GRX site: http://grx.gnu.de Enjoy, M.Alvarez

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