/*
 * This file handles all that needs to be done...
 * Some stuff is stolen from gcombust since I never used pipes... ok, i 
 * only used them in reallife :)
 */

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <gtk/gtk.h>

#include "callbacks.h"
#include "interface.h"
#include "support.h"

#include <sys/types.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>

int hydra_pid = 0;

char port[10];
char tasks[10];
char timeout[10];
char smbntparm[4];
char snmpparm[4];
char sapr3id[4];
char passLoginNull[4];
 

#define BUF_S 1024

void hydra_select_file(GtkEntry *widget, char *text) {
#ifdef GTK_TYPE_FILE_CHOOSER
	GtkWidget *dialog;
	char *filename;

	dialog = gtk_file_chooser_dialog_new (text, (GtkWindow *) wndMain, GTK_FILE_CHOOSER_ACTION_OPEN,
					GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL,
					GTK_RESPONSE_CANCEL, NULL);

	if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT) {
		filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
		gtk_entry_set_text(widget, filename);
		g_free (filename);
	}
	gtk_widget_destroy (dialog);
#endif
}

int hydra_get_options(char *options[]) {
	/* get the stuff from the gtk entries... */
	int i = 1;
	GtkWidget *widget;
	GtkWidget *widget2;
	int j;
	gchar *tmp;
	GString *a;

	options[0] = HYDRA_BIN;

	/* get the port */
	widget = lookup_widget(GTK_WIDGET(wndMain), "spnPort");
	j = gtk_spin_button_get_value_as_int((GtkSpinButton *) widget);
	if ( j != 0 ){
		snprintf(port, 10, "%d", j);
		options[i++] = "-s";
		options[i++] = port;
	}

	/* use SSL? */
	widget = lookup_widget(GTK_WIDGET(wndMain), "chkSSL");	
	if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){
		options[i++] = "-S";
	}

	/* be verbose? */
	widget = lookup_widget(GTK_WIDGET(wndMain), "chkVerbose");	
	if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){
		options[i++] = "-v";
	}

	/* show attempts */
	widget = lookup_widget(GTK_WIDGET(wndMain), "chkAttempts");	
	if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){
		options[i++] = "-V";
	}

	/* debug mode? */
	widget = lookup_widget(GTK_WIDGET(wndMain), "chkDebug");	
	if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){
		options[i++] = "-d";
	}	

	/* use colon seperated list? */
	widget = lookup_widget(GTK_WIDGET(wndMain), "chkColon");	
	if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){	
		options[i++] = "-C";
		widget = lookup_widget(GTK_WIDGET(wndMain), "entColonFile");
		options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);

	} else {
		/* get the username, or username list */
		widget = lookup_widget(GTK_WIDGET(wndMain), "radioUsername1");
		if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){	
			options[i++] = "-l";
			widget = lookup_widget(GTK_WIDGET(wndMain), "entUsername");
			options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);
		} else {
			options[i++] = "-L";
			widget = lookup_widget(GTK_WIDGET(wndMain), "entUsernameFile");
			options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);
		}

		/* get the pass, or pass list */
		widget = lookup_widget(GTK_WIDGET(wndMain), "radioPass1");
		if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){	
			options[i++] = "-p";
			widget = lookup_widget(GTK_WIDGET(wndMain), "entPass");
			options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);
		} else {
			options[i++] = "-P";
			widget = lookup_widget(GTK_WIDGET(wndMain), "entPassFile");
			options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);
		}
	}

	/* empty passes / login as pass? */
	memset(passLoginNull, 0, 4);
	widget = lookup_widget(GTK_WIDGET(wndMain), "chkPassNull");
	if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){
		passLoginNull[0] = 'n';
	}
	widget = lookup_widget(GTK_WIDGET(wndMain), "chkPassLogin");
	if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){
		if ( passLoginNull[0] == 0 ) {
			passLoginNull[0] = 's';
		} else {
			passLoginNull[1] = 's';
		}
	}
	if ( passLoginNull[0] != 0 ) {
		options[i++] = "-e";
		options[i++] = passLoginNull;	
	}	

	/* #of tasks */
	widget = lookup_widget(GTK_WIDGET(wndMain), "spnTasks");
	j = gtk_spin_button_get_value_as_int((GtkSpinButton *) widget);
	if ( j != 40 ){
		snprintf(tasks, 10, "%d", j);
		options[i++] = "-t";
		options[i++] = tasks;
	}

	/* timeout */
	widget = lookup_widget(GTK_WIDGET(wndMain), "spnTimeout");
	j = gtk_spin_button_get_value_as_int((GtkSpinButton *) widget);
	if ( j != 30 ){
		snprintf(timeout, 10, "%d", j);
		options[i++] = "-w";
		options[i++] = timeout;
	}

	/* exit after first found pair? */
	widget = lookup_widget(GTK_WIDGET(wndMain), "chkExitf");
	if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){
		options[i++] = "-f";
	}

	/* get additional parameters */
	widget = lookup_widget(GTK_WIDGET(wndMain), "entProtocol");
	tmp = (char *) gtk_entry_get_text((GtkEntry *) widget);
	
	if ( !strncmp(tmp, "http-", 5) || !strncmp(tmp, "https-", 6)) {
		options[i++] = "-m";
		widget = lookup_widget(GTK_WIDGET(wndMain), "entHTTPURL");
		options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);

	} else if ( !strcmp(tmp, "cisco-enable")) {
		options[i++] = "-m";
		widget = lookup_widget(GTK_WIDGET(wndMain), "entCiscoPass");
		options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);

	} else if ( !strcmp(tmp, "ldap2")) {
		options[i++] = "-m";
		widget = lookup_widget(GTK_WIDGET(wndMain), "entLDAPDN");
		options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);

	} else if ( !strcmp(tmp, "ldap3")) {
		options[i++] = "-m";
		widget = lookup_widget(GTK_WIDGET(wndMain), "entLDAPDN");
		options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);

	} else if ( !strcmp(tmp, "smbnt")) {
		memset(smbntparm, 0, 4);

		widget = lookup_widget(GTK_WIDGET(wndMain), "chkDomain");
		widget2 = lookup_widget(GTK_WIDGET(wndMain), "chkLocal");
		options[i++] = "-m";
		smbntparm[0] = 'B';

		if ( gtk_toggle_button_get_active((GtkToggleButton *) widget)) {
			smbntparm[0] = 'D';
		}
		if ( gtk_toggle_button_get_active((GtkToggleButton *) widget2)) {
			if ( gtk_toggle_button_get_active((GtkToggleButton *) widget)) {
				smbntparm[0] = 'B';
			} else {
				smbntparm[0] = 'L';
			}
		}
		widget = lookup_widget(GTK_WIDGET(wndMain), "chkNTLM");
		if ( gtk_toggle_button_get_active((GtkToggleButton *) widget)) {
			smbntparm[1] = 'H';
		}
		options[i++] = smbntparm;

	} else if (!strcmp(tmp, "sapr3")) {
		widget = lookup_widget(GTK_WIDGET(wndMain), "spnSAPR3");
		j = gtk_spin_button_get_value_as_int((GtkSpinButton *) widget);
		snprintf(sapr3id, 10, "%d", j);
		options[i++] = "-m";
		options[i++] = sapr3id;		

	} else if (!strcmp(tmp, "http-proxy")) {
		widget = lookup_widget(GTK_WIDGET(wndMain), "entHTTPProxyURL");
		options[i++] = "-m";
		options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);

	} else if (!strcmp(tmp, "cvs")||!strcmp(tmp, "svn")) {
		widget = lookup_widget(GTK_WIDGET(wndMain), "entCVS");
		options[i++] = "-m";
		options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);

	} else if (!strcmp(tmp, "snmp")) {
		memset(snmpparm, 0, 4);
		widget = lookup_widget(GTK_WIDGET(wndMain), "radioSNMPVer1");
		if ( gtk_toggle_button_get_active((GtkToggleButton *) widget)) {
			snmpparm[0] = '1';
		} else {
			snmpparm[0] = '2';
		}

		widget = lookup_widget(GTK_WIDGET(wndMain), "radioSNMPWrite");
		if ( gtk_toggle_button_get_active((GtkToggleButton *) widget)) {
			snmpparm[0] = 'w';
		} else {
			snmpparm[0] = 'r';
		}

		options[i++] = "-m";
		options[i++] = snmpparm;
	} else if ( !strcmp(tmp, "telnet")) {
		widget = lookup_widget(GTK_WIDGET(wndMain), "entTelnet");
		if ( (char *) gtk_entry_get_text((GtkEntry *) widget) != NULL ) {
			options[i++] = "-m";
			options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);
		}
	}

	/* clean up proxy settings */
	unsetenv("HYDRA_PROXY_HTTP");
	unsetenv("HYDRA_PROXY_CONNECT");
	unsetenv("HYDRA_PROXY_AUTH");

	/* proxy support */
	widget = lookup_widget(GTK_WIDGET(wndMain), "radioProxy");

	if ( !gtk_toggle_button_get_active((GtkToggleButton *) widget)) {

		widget2 = lookup_widget(GTK_WIDGET(wndMain), "entHTTPProxy");
		widget = lookup_widget(GTK_WIDGET(wndMain), "radioProxy2");

		/* which variable do we set? */
		if ((!strncmp(tmp, "http-", 5)) && ( gtk_toggle_button_get_active((GtkToggleButton *) widget))) {
			setenv("HYDRA_PROXY_HTTP", gtk_entry_get_text((GtkEntry *) widget2), 1);
		} else {
			setenv("HYDRA_PROXY_CONNECT", (char *) gtk_entry_get_text((GtkEntry *) widget2), 1);
		}

		/* do we need to provide user and pass? */
		widget = lookup_widget(GTK_WIDGET(wndMain), "chkProxyAuth");
		if ( gtk_toggle_button_get_active((GtkToggleButton *) widget)) {
			widget = lookup_widget(GTK_WIDGET(wndMain), "entProxyUser");
			widget2 = lookup_widget(GTK_WIDGET(wndMain), "entProxyPass");
			a = g_string_new((gchar *) gtk_entry_get_text((GtkEntry *) widget));
			a = g_string_append_c(a, ':');
			a = g_string_append(a, gtk_entry_get_text((GtkEntry *) widget2));
			setenv("HYDRA_PROXY_AUTH", a->str, 1);
			(void) g_string_free(a, TRUE);
		}
	}		

	/* get the target, or target list */
	widget = lookup_widget(GTK_WIDGET(wndMain), "radioTarget1");
	if ( gtk_toggle_button_get_active((GtkToggleButton *) widget) ){	
		widget = lookup_widget(GTK_WIDGET(wndMain), "entTarget");
		options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);
	} else {
		options[i++] = "-M";
		widget = lookup_widget(GTK_WIDGET(wndMain), "entTargetFile");
		options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);
	}

	/* get the service */
	widget = lookup_widget(GTK_WIDGET(wndMain), "entProtocol");
	options[i++] = (char *) gtk_entry_get_text((GtkEntry *) widget);
	
	options[i] = NULL;
	return i;
}

int
update_statusbar()
{
	int i,j;
	char *options[128];
	guint context_id;
	GtkStatusbar *statusbar;
	extern guint message_id;
	GString *statustext = g_string_new("hydra ");

	i = hydra_get_options(options);

	for (j = 1; j < i; j++){

		statustext = g_string_append(statustext, options[j]);
		statustext = g_string_append_c(statustext, ' ');
	}

	statusbar = (GtkStatusbar *) lookup_widget(GTK_WIDGET(wndMain), "statusbar");
	context_id =  gtk_statusbar_get_context_id(statusbar, "status");

	/* an old message in stack? */
	if ( message_id != 0 ){
		gtk_statusbar_remove(statusbar, context_id, message_id);		
	}

	message_id = gtk_statusbar_push(statusbar, context_id, (gchar *) statustext->str);

	(void) g_string_free(statustext, TRUE);

	return TRUE;
}

int read_into(int fd) {
        char in_buf[BUF_S];
	char *passline;
	char *start, *end;
        int result;
	GtkWidget *output;
	GtkTextBuffer *outputbuf;
	GtkTextIter outputiter;
 
        if ((result = read(fd, in_buf, BUF_S-1)) < 0) {
                g_warning("%s::%i: read returned negative!", __FILE__, __LINE__);
                return FALSE;
        } else if (result == 0) {
                return FALSE;
        } else {
                in_buf[result] = 0;
	}

	output = lookup_widget(GTK_WIDGET(wndMain), "txtOutput");
	outputbuf = gtk_text_view_get_buffer((GtkTextView*) output);

	gtk_text_buffer_get_iter_at_offset(outputbuf, &outputiter, -1);


	if (( passline = strstr(in_buf, "password: ")) == NULL ) {
		gtk_text_buffer_insert(outputbuf, &outputiter, in_buf, result);
	} else {
		start = in_buf;
		end = in_buf;
		while ((end = (strchr(end + 1, '\n'))) < passline ) { 
			start = end;
		}

		if ( start != in_buf ) {
			gtk_text_buffer_insert(outputbuf, &outputiter, in_buf, (start - in_buf + 1));
		}
		gtk_text_buffer_insert_with_tags_by_name (outputbuf, &outputiter, start, (end - start + 1), "bold", NULL);

		if (end - in_buf - result > 0 ) {
			gtk_text_buffer_insert(outputbuf, &outputiter, end+1, -1);
		}
		
	}


	if ( strstr(in_buf, " finished at ") != NULL ) {
		gtk_text_buffer_insert_with_tags_by_name(outputbuf, &outputiter, "<finished>\n\n", -1, "bold", NULL);
	}

        if (result == BUF_S -1) /* there might be more available, recurse baby! */
                return read_into(fd);
        else
                return TRUE;
}

/* wait for hydra output */

static int wait_hydra_output(gpointer data) {
	static int stdout_ok = TRUE, stderr_ok = TRUE;
	fd_set rset;
	struct timeval tv;
	int result, max;
	int *fd = data;
	int status;

	g_assert((stdout_ok == TRUE) || (stderr_ok == TRUE));

	tv.tv_sec = 0;
	tv.tv_usec = 0;

	FD_ZERO(&rset);
	max = -1;

	if (stdout_ok) {
		FD_SET(fd[0], &rset);
		max = fd[0];
	}
	if (stderr_ok) {
		FD_SET(fd[1], &rset);
		if (-1 == max)
			max = fd[1];
		else
			max = fd[0]>fd[1] ? fd[0] : fd[1];
	}

	result = select(max + 1, &rset, NULL, NULL, &tv);

	if (result < 0)
		g_error("wait_hydra_output: select returned negative!");
	else if (result == 0)
		return TRUE;

	if (stdout_ok && FD_ISSET(fd[0], &rset))
		stdout_ok = read_into(fd[0]);
	if (stderr_ok && FD_ISSET(fd[1], &rset))
		stderr_ok = read_into(fd[1]);

	if (!(stdout_ok || stderr_ok)) {
		waitpid(hydra_pid, &status, 0);
		hydra_pid = 0;
		stdout_ok = stderr_ok = TRUE;
		return FALSE;
	} else
		return TRUE;
}


/* assumes a successfull pipe() won't set the fd's to -1 */
static void close_pipe(int *pipe) {
	if (-1 != pipe[0]) {
		close(pipe[0]);
		pipe[0] = -1;
	}
	if (-1 != pipe[1]) {
		close(pipe[1]);
		pipe[1] = -1;
	}
}

/* executes the command stored in command->elemets (which is suitable for execv())
 * returns an int *pfd with file descriptors:
 * pfd[0] STDOUT output of the command and
 * pfd[1] STDERR output of the command
 */

int *popen_re_unbuffered(char *command) {
	static int p_r[2] = {-1, -1}, p_e[2] = {-1, -1};
	static int *pfd = NULL;
	char *options[128];
	hydra_pid = 0;

	update_statusbar();

	/* only allocate once */
	if (NULL == pfd)
		pfd = malloc(sizeof(int)*2);

	/* clean up from last command */
	close_pipe(p_r);
	close_pipe(p_e);

	if (pipe(p_r) < 0 || pipe(p_e) < 0) {
		g_warning("popen_rw_unbuffered: Error creating pipe!");
		return NULL;
	}

	if ((hydra_pid = fork()) < 0) {
		g_warning("popen_rw_unbuffered: Error forking!");
		return NULL;
	} else if (hydra_pid == 0) { /* child */
		int k;
		if (setpgid(getpid(), getpid()) < 0)
			g_warning("popen_rw_unbuffered: setpgid() failed");
		if (close(p_r[0]) < 0)
			g_warning("popen_rw_unbuffered: close(p_r[0]) failed");
		if (p_r[1] != STDOUT_FILENO)
			if (dup2(p_r[1], STDOUT_FILENO) < 0)
				g_warning("popen_rw_unbuffered: child dup2 STDOUT failed!");
		if (close(p_r[1]) < 0)
			g_warning("popen_rw_unbuffered: close(p_r[1]) failed");

		if (close(p_e[0]) < 0)
			g_warning("popen_rw_unbuffered: close(p_e[0]) failed");
		if (p_e[1] != STDERR_FILENO)
			if (dup2(p_e[1], STDERR_FILENO) < 0)
				g_warning("popen_rw_unbuffered: child dup2 STDERR failed!");
		if (close(p_e[1]) < 0)
			g_warning("popen_rw_unbuffered: close(p_e[1]) failed");

		(void) hydra_get_options(options);

		execv(HYDRA_BIN, options);

		g_warning("%s %i: popen_rw_unbuffered: execv() returned", __FILE__, __LINE__);
		for ( k = 0; options[k] != NULL; k++ ){
			g_warning(options[k]);
		}
		gtk_main_quit();
	} else { /* parent */
		if (close(p_r[1]) < 0)
			g_warning("popen_rw_unbuffered: close(p_r[1]) (parent) failed");
		if (close(p_e[1]) < 0)
			g_warning("popen_rw_unbuffered: close(p_e[1]) (parent) failed");
		pfd[0] = p_r[0];
		pfd[1] = p_e[0];
		return pfd;
	}
	g_assert_not_reached();
	return pfd;
}

void
on_quit1_activate                      (GtkMenuItem     *menuitem,
                                        gpointer         user_data)
{
	gtk_main_quit();
}


void
on_about1_activate                     (GtkMenuItem     *menuitem,
                                        gpointer         user_data)
{

}

void
on_btnStart_clicked                   (GtkButton       *button,
                                        gpointer         user_data)
{
	int *fd = NULL;
	fd = popen_re_unbuffered(NULL);
	g_timeout_add (200, wait_hydra_output, fd);

}

void
on_btnStop_clicked                   (GtkButton       *button,
                                        gpointer         user_data)
{
	if (hydra_pid != 0){
		kill(hydra_pid, SIGTERM);	
		hydra_pid = 0;
	}
}


void
on_wndMain_destroy                     (GtkObject       *object,
                                        gpointer         user_data)
{
	if (hydra_pid != 0){
		kill(hydra_pid, SIGTERM);	
		hydra_pid = 0;
	}
	gtk_main_quit();
}



gboolean
on_entTargetFile_button_press_event    (GtkWidget       *widget,
                                        GdkEventButton  *event,
                                        gpointer         user_data)
{
	hydra_select_file((GtkEntry *) widget, "Select target list");
	gtk_widget_grab_focus(widget);
	return TRUE;
}


gboolean
on_entUsernameFile_button_press_event  (GtkWidget       *widget,
                                        GdkEventButton  *event,
                                        gpointer         user_data)
{
	hydra_select_file((GtkEntry *) widget, "Select username list");
	gtk_widget_grab_focus(widget);
	return TRUE;
}

 
gboolean
on_entPassFile_button_press_event      (GtkWidget       *widget,
                                        GdkEventButton  *event,
                                        gpointer         user_data)
{
	hydra_select_file((GtkEntry *) widget, "Select password list");
	gtk_widget_grab_focus(widget);
	return TRUE;
}

gboolean
on_entColonFile_button_press_event      (GtkWidget       *widget,
                                        GdkEventButton  *event,
                                        gpointer         user_data)
{
	hydra_select_file((GtkEntry *) widget, "Select colon seperated user,password list");
	gtk_widget_grab_focus(widget);
	return TRUE;
}

void
on_btnSave_clicked                     (GtkButton       *button,
                                        gpointer         user_data)
{
#ifdef GTK_TYPE_FILE_CHOOSER
	GtkWidget *dialog;
	char *filename;
	gchar *text;
	int fd;
	GtkWidget *output;
	GtkTextBuffer *outputbuf;
	GtkTextIter start;
	GtkTextIter end;

	dialog = gtk_file_chooser_dialog_new ("Save output", (GtkWindow *)wndMain, GTK_FILE_CHOOSER_ACTION_SAVE,
					GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT, GTK_STOCK_CANCEL,
					GTK_RESPONSE_CANCEL, NULL);
	if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT) {
		filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));

		output = lookup_widget(GTK_WIDGET(wndMain), "txtOutput");
		outputbuf = gtk_text_view_get_buffer((GtkTextView*) output);
		gtk_text_buffer_get_start_iter(outputbuf, &start);
		gtk_text_buffer_get_end_iter(outputbuf, &end);
		
		text = gtk_text_buffer_get_text(outputbuf, &start, &end, TRUE);

		fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY);
		if ( fd > 0 ) {
			write(fd, text, strlen(text));
			close(fd);
		}
		g_free(text);	
		g_free(filename);
	}
	gtk_widget_destroy (dialog);
#endif
}

void
on_chkColon_toggled                    (GtkToggleButton *togglebutton,
                                        gpointer         user_data)
{
	GtkWidget *user, *pass;
	user =  lookup_widget(GTK_WIDGET(wndMain), "frmUsername");;	
	pass =  lookup_widget(GTK_WIDGET(wndMain), "frmPass");

	if (gtk_toggle_button_get_active(togglebutton)){
		gtk_widget_set_sensitive(user, FALSE);
		gtk_widget_set_sensitive(pass, FALSE);
	} else {
		gtk_widget_set_sensitive(user, TRUE);
		gtk_widget_set_sensitive(pass, TRUE);
	}
}

void
on_btnClear_clicked                    (GtkButton       *button,
                                        gpointer         user_data)
{
	GtkWidget *output;
	GtkTextBuffer *outputbuf;
	output = lookup_widget(GTK_WIDGET(wndMain), "txtOutput");
	outputbuf = gtk_text_view_get_buffer((GtkTextView*) output);
	gtk_text_buffer_set_text(outputbuf, "", -1);
}