/* GMODULE - GLIB wrapper code for dynamic module loading
- * Copyright (C) 1998 Tim Janik
+ * Copyright (C) 1998, 2000 Tim Janik
+ *
+ * Win32 GMODULE implementation
* Copyright (C) 1998 Tor Lillqvist
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
+ * modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Library General Public
+ * You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
+/*
+ * Modified by the GLib Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GLib Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
/*
* MT safe
*/
#include <stdio.h>
#include <windows.h>
+#include <tlhelp32.h>
+
+#ifdef G_WITH_CYGWIN
+#include <sys/cygwin.h>
+#endif
+
+static void
+set_error (void)
+{
+ gchar *error = g_win32_error_message (GetLastError ());
+
+ g_module_set_error (error);
+ g_free (error);
+}
+
/* --- functions --- */
static gpointer
-_g_module_open (const gchar *file_name,
- gboolean bind_lazy)
+_g_module_open (const gchar *file_name,
+ gboolean bind_lazy,
+ gboolean bind_local)
{
HINSTANCE handle;
+#ifdef G_WITH_CYGWIN
+ gchar tmp[MAX_PATH];
+
+ cygwin_conv_to_win32_path(file_name, tmp);
+ file_name = tmp;
+#endif
+ if (G_WIN32_HAVE_WIDECHAR_API ())
+ {
+ wchar_t *wfilename = g_utf8_to_utf16 (file_name, -1, NULL, NULL, NULL);
- handle = LoadLibrary (file_name);
- if (!handle)
+ handle = LoadLibraryW (wfilename);
+ g_free (wfilename);
+ }
+ else
{
- char error[100];
- sprintf (error, "Error code %d", GetLastError ());
- g_module_set_error (error);
+ gchar *cp_filename = g_locale_from_utf8 (file_name, -1, NULL, NULL, NULL);
+
+ handle = LoadLibraryA (cp_filename);
+ g_free (cp_filename);
}
-
+
+ if (!handle)
+ set_error ();
+
return handle;
}
+static gint dummy;
+static gpointer null_module_handle = &dummy;
+
static gpointer
_g_module_self (void)
{
- HMODULE handle;
-
- handle = GetModuleHandle (NULL);
- if (!handle)
+ return null_module_handle;
+}
+
+static void
+_g_module_close (gpointer handle,
+ gboolean is_unref)
+{
+ if (handle != null_module_handle)
+ if (!FreeLibrary (handle))
+ set_error ();
+}
+
+static gpointer
+find_in_any_module_using_toolhelp (const gchar *symbol_name)
+{
+ typedef HANDLE (WINAPI *PFNCREATETOOLHELP32SNAPSHOT)(DWORD, DWORD);
+ static PFNCREATETOOLHELP32SNAPSHOT pfnCreateToolhelp32Snapshot = NULL;
+
+ typedef BOOL (WINAPI *PFNMODULE32FIRST)(HANDLE, MODULEENTRY32*);
+ static PFNMODULE32FIRST pfnModule32First= NULL;
+
+ typedef BOOL (WINAPI *PFNMODULE32NEXT)(HANDLE, MODULEENTRY32*);
+ static PFNMODULE32NEXT pfnModule32Next = NULL;
+
+ static HMODULE kernel32;
+
+ HANDLE snapshot;
+ MODULEENTRY32 me32;
+
+ gpointer p;
+
+ if (!pfnCreateToolhelp32Snapshot || !pfnModule32First || !pfnModule32Next)
{
- char error[100];
- sprintf (error, "Error code %d", GetLastError ());
- g_module_set_error (error);
+ if (!kernel32)
+ if (!(kernel32 = GetModuleHandle ("kernel32.dll")))
+ return NULL;
+
+ if (!(pfnCreateToolhelp32Snapshot = (PFNCREATETOOLHELP32SNAPSHOT) GetProcAddress (kernel32, "CreateToolhelp32Snapshot"))
+ || !(pfnModule32First = (PFNMODULE32FIRST) GetProcAddress (kernel32, "Module32First"))
+ || !(pfnModule32Next = (PFNMODULE32NEXT) GetProcAddress (kernel32, "Module32Next")))
+ return NULL;
}
-
- return handle;
+
+ if ((snapshot = (*pfnCreateToolhelp32Snapshot) (TH32CS_SNAPMODULE, 0)) == (HANDLE) -1)
+ return NULL;
+
+ me32.dwSize = sizeof (me32);
+ p = NULL;
+ if ((*pfnModule32First) (snapshot, &me32))
+ {
+ do {
+ if ((p = GetProcAddress (me32.hModule, symbol_name)) != NULL)
+ break;
+ } while ((*pfnModule32Next) (snapshot, &me32));
+ }
+
+ CloseHandle (snapshot);
+
+ return p;
}
-static void
-_g_module_close (gpointer handle,
- gboolean is_unref)
+static gpointer
+find_in_any_module_using_psapi (const gchar *symbol_name)
{
- if (!FreeLibrary (handle))
+ static HMODULE psapi = NULL;
+
+ typedef BOOL (WINAPI *PFNENUMPROCESSMODULES) (HANDLE, HMODULE *, DWORD, LPDWORD) ;
+ static PFNENUMPROCESSMODULES pfnEnumProcessModules = NULL;
+
+ HMODULE *modules;
+ HMODULE dummy;
+ gint i, size;
+ DWORD needed;
+
+ gpointer p;
+
+ if (!pfnEnumProcessModules)
{
- char error[100];
- sprintf (error, "Error code %d", GetLastError ());
- g_module_set_error (error);
+ if (!psapi)
+ if ((psapi = LoadLibrary ("psapi.dll")) == NULL)
+ return NULL;
+
+ if (!(pfnEnumProcessModules = (PFNENUMPROCESSMODULES) GetProcAddress (psapi, "EnumProcessModules")))
+ return NULL;
}
+
+ if (!(*pfnEnumProcessModules) (GetCurrentProcess (), &dummy,
+ sizeof (HMODULE), &needed))
+ return NULL;
+
+ size = needed + 10 * sizeof (HMODULE);
+ modules = g_malloc (size);
+
+ if (!(*pfnEnumProcessModules) (GetCurrentProcess (), modules,
+ size, &needed)
+ || needed > size)
+ {
+ g_free (modules);
+ return NULL;
+ }
+
+ p = NULL;
+ for (i = 0; i < needed / sizeof (HMODULE); i++)
+ if ((p = GetProcAddress (modules[i], symbol_name)) != NULL)
+ break;
+
+ g_free (modules);
+
+ return p;
}
static gpointer
-_g_module_symbol (gpointer handle,
- const gchar *symbol_name)
+find_in_any_module (const gchar *symbol_name)
+{
+ gpointer result;
+
+ if ((result = find_in_any_module_using_toolhelp (symbol_name)) == NULL
+ && (result = find_in_any_module_using_psapi (symbol_name)) == NULL)
+ return NULL;
+ else
+ return result;
+}
+
+static gpointer
+_g_module_symbol (gpointer handle,
+ const gchar *symbol_name)
{
gpointer p;
- p = GetProcAddress (handle, symbol_name);
- if (!p)
+ if (handle == null_module_handle)
{
- char error[100];
- sprintf (error, "Error code %d", GetLastError ());
- g_module_set_error (error);
+ if ((p = GetProcAddress (GetModuleHandle (NULL), symbol_name)) == NULL)
+ p = find_in_any_module (symbol_name);
}
+ else
+ p = GetProcAddress (handle, symbol_name);
+
+ if (!p)
+ set_error ();
+
return p;
}
gint k;
k = strlen (module_name);
+
if (directory && *directory)
- if (k > 4 && g_strcasecmp (module_name + k - 4, ".dll") == 0)
- return g_strconcat (directory, "\\", module_name, NULL);
+ if (k > 4 && g_ascii_strcasecmp (module_name + k - 4, ".dll") == 0)
+ return g_strconcat (directory, G_DIR_SEPARATOR_S, module_name, NULL);
+#ifdef G_WITH_CYGWIN
+ else if (strncmp (module_name, "lib", 3) == 0 || strncmp (module_name, "cyg", 3) == 0)
+ return g_strconcat (directory, G_DIR_SEPARATOR_S, module_name, ".dll", NULL);
+ else
+ return g_strconcat (directory, G_DIR_SEPARATOR_S, "cyg", module_name, ".dll", NULL);
+#else
+ else if (strncmp (module_name, "lib", 3) == 0)
+ return g_strconcat (directory, G_DIR_SEPARATOR_S, module_name, ".dll", NULL);
else
- return g_strconcat (directory, "\\", module_name, ".dll", NULL);
- else if (k > 4 && g_strcasecmp (module_name + k - 4, ".dll") == 0)
+ return g_strconcat (directory, G_DIR_SEPARATOR_S, "lib", module_name, ".dll", NULL);
+#endif
+ else if (k > 4 && g_ascii_strcasecmp (module_name + k - 4, ".dll") == 0)
return g_strdup (module_name);
+#ifdef G_WITH_CYGWIN
+ else if (strncmp (module_name, "lib", 3) == 0 || strncmp (module_name, "cyg", 3) == 0)
+ return g_strconcat (module_name, ".dll", NULL);
else
+ return g_strconcat ("cyg", module_name, ".dll", NULL);
+#else
+ else if (strncmp (module_name, "lib", 3) == 0)
return g_strconcat (module_name, ".dll", NULL);
+ else
+ return g_strconcat ("lib", module_name, ".dll", NULL);
+#endif
}