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July 2010
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2010.07.12 17:34 "Re: strlcpy vs strncpy", by Dmitry V Levin
On Thu, Jul 08, 2010 at 11:25:26AM -0500, Bob Friesenhahn wrote: > GraphicsMagick is using strlcpy() and strlcat() for secure string > copies. I will be happy to contribute versions that I wrote myself > for use in libtiff if libtiff choses to rely on these more secure > functions. Libtiff should name the replacement functions differently > in order to avoid any possible conflict/confusion with system provided > versions, or versions from some dependent library or program. If these functions are going to be added to libtiff, please do not change their names. Instead, add an autoconf test and a couple of ifdefs so that on systems where strlcpy() and strlcat() are provided by libc no redundant implementations are added. Something like this: configure.ac: AC_CHECK_FUNCS(strlcat strlcpy) Declaration: #ifndef HAVE_STRLCPY # define strlcpy tiff_strlcpy [a declaration of strlcpy()] #endif /* HAVE_STRLCPY */ Implementation: #ifndef HAVE_STRLCPY [an implementation of strlcpy()] #endif /* HAVE_STRLCPY */ -- ldv