No more dlsym(3) hack. Thanks Sean C. Farley.

Submitted by:	Sean C. Farley  <sean-freebsd@farley.org>

1 files changed, 96 insertions, 0 deletions

diff --git a/www/linuxpluginwrapper/files/patch-compat_glibc-linux_dynamic.c b/www/linuxpluginwrapper/files/patch-compat_glibc-linux_dynamic.c
new file mode 100644
index 000000000000..e5befc19283d
--- /dev/null
+++ b/www/linuxpluginwrapper/files/patch-compat_glibc-linux_dynamic.c
@@ -0,0 +1,96 @@
+--- compat_glibc/linux_dynamic.c.orig	Sun Oct 17 12:45:23 2004
++++ compat_glibc/linux_dynamic.c	Sun Jan 28 22:09:17 2007
+@@ -1,5 +1,5 @@
+ /*-
+- * Copyright (c) 2004 Norikatsu Shigemura
++ * Copyright (c) 2006 Sean Farley
+  * All rights reserved.
+  *
+  * Redistribution and use in source and binary forms, with or without
+@@ -23,38 +23,68 @@
+  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+  * SUCH DAMAGE.
+  *
+- * $Id: linux_dynamic.c,v 1.1 2004/10/17 03:45:23 nork Exp $
++ * $Id$
+  */
+ 
+ #include "pluginwrapper.h"
+ #include "linux.h"
+-#include <stddef.h>
+ #include <dlfcn.h>
+-#include <string.h>
++#include <err.h>
++#include <stdlib.h>
++
++static const char LibGtk[] = "libgtk-x11-2.0.so.0";
++
++static void *libGtkHandle;
++
++/*
++ * Initialize handle to libgtk-x11-2.0.
++ */
++static void __attribute__((constructor)) init_lib(void)
++{
++	libGtkHandle = dlopen(LibGtk, RTLD_LAZY | RTLD_LOCAL);
++	if (libGtkHandle == NULL) {
++		errx(EXIT_FAILURE, "dlopen(\"%s\"):  %s", LibGtk, dlerror());
++	}
++
++	return;
++}
+ 
+-extern unsigned int gtk_major_version;
+ 
+ /*
+- * dlsym(3)
++ * Deinitialize handle to libgtk-x11-2.0.
+  */
+-void *_dlsym(void *, const char *);
++static void __attribute__((constructor)) deinit_lib(void)
++{
++	if (libGtkHandle != NULL && dlclose(libGtkHandle) != 0) {
++		errx(EXIT_FAILURE, "dlclose(%p):  %s", libGtkHandle, dlerror());
++	}
++
++	return;
++}
++
+ 
++/*
++ * dlsym(3) using dlfunc(3) to avoid difficulty of locating original dlsym().
++ */
+ void *
+ dlsym(void *handle, const char *symbol)
+ {
+-	void	*ret;
+-
+-	if(  handle == NULL && strcmp(symbol, "gtk_major_version") == 0  )  {
+-		ret = &gtk_major_version;
+-		dprintf("gtk_major_version = %d", gtk_major_version);
+-	}  else  {
+-		ret = _dlsym(handle, symbol);
+-	}
++	void *sym;
+ 
+-	dprintf("dlsym(handle='%s', symbol='%s') = %p", handle, symbol, ret);
+-	if(  ret == NULL  )  {
+-		dprintf("dlerror=%s", dlerror());
++	/* Find desired symbol. */
++	sym = dlfunc(handle, symbol);
++	if (sym == NULL) {
++		dprintf("dlfunc(%p, %s):  %s", handle, symbol, dlerror());
++
++		/* Attempt another search using libgtk-x11-2.0. */
++		if (handle == NULL) {
++			sym = dlfunc(libGtkHandle, symbol);
++			if (sym == NULL)
++				dprintf("dlfunc(%p, %s):  %s", handle, symbol,
++				    dlerror());
++		}
+ 	}
++	dprintf("dlsym(%p, %s) = %p", handle, symbol, sym);
+ 
+-	return ret;
++	return (sym);
+ }