/*
* Called when the program starts, to save whatever credential information
* we'll need later, and to do whatever other specialized platform-dependent
* initialization we want.
*/
void
init_process_policies(void)
{
HMODULE kernel32Handle;
typedef BOOL (WINAPI *SetProcessDEPPolicyHandler)(DWORD);
SetProcessDEPPolicyHandler PSetProcessDEPPolicy;
#ifndef PROCESS_DEP_ENABLE
#define PROCESS_DEP_ENABLE 1
#endif
/*
* If we have SetProcessDEPPolicy(), turn "data execution
* prevention" on - i.e., if the MMU lets you set execute
* permission on a per-page basis, turn execute permission
* off on most data pages. PSetProcessDEPPolicy() fails on
* 64-bit Windows (it's *always* on there), but if it fails,
* we don't care (we did our best), so we don't check for
* errors.
*
* XXX - if the GetModuleHandle() call fails, should we report
* an error? That "shouldn't happen" - it's the equivalent
* of libc.{so,sl,a} or libSystem.dylib being missing on UN*X.
*/
kernel32Handle = GetModuleHandle(_T("kernel32.dll"));
if (kernel32Handle != NULL) {
PSetProcessDEPPolicy = (SetProcessDEPPolicyHandler) GetProcAddress(kernel32Handle, "SetProcessDEPPolicy");
if (PSetProcessDEPPolicy) {
PSetProcessDEPPolicy(PROCESS_DEP_ENABLE);
}
}
npf_sys_is_running();
}
/* Check if there's something important to tell the user during startup.
* We want to do this *after* showing the main window so that any windows
* we pop up will be above the main window.
*/
static void
check_and_warn_user_startup(const QString &cf_name)
{
#ifndef _WIN32
Q_UNUSED(cf_name)
#endif
gchar *cur_user, *cur_group;
/* Tell the user not to run as root. */
if (running_with_special_privs() && recent.privs_warn_if_elevated) {
cur_user = get_cur_username();
cur_group = get_cur_groupname();
simple_message_box(ESD_TYPE_WARN, &recent.privs_warn_if_elevated,
"Running as user \"%s\" and group \"%s\".\n"
"This could be dangerous.\n\n"
"If you're running Wireshark this way in order to perform live capture, "
"you may want to be aware that there is a better way documented at\n"
"https://wiki.wireshark.org/CaptureSetup/CapturePrivileges", cur_user, cur_group);
g_free(cur_user);
g_free(cur_group);
}
#ifdef _WIN32
/* Warn the user if npf.sys isn't loaded. */
if (!get_stdin_capture() && cf_name.isEmpty() && !npf_sys_is_running() && recent.privs_warn_if_no_npf && get_windows_major_version() >= 6) {
simple_message_box(ESD_TYPE_WARN, &recent.privs_warn_if_no_npf, "%s",
"The NPF driver isn't running. You may have trouble\n"
"capturing or listing interfaces.");
}
#endif
}
