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/*
This file is part of GNUnet.
(C) 2005 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2, or (at your
option) any later version.
GNUnet 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file src/daemon.c
* @brief code for gnunet-gtk gnunetd interaction
* @author Christian Grothoff
*/
#include "platform.h"
#include "daemon.h"
#include "main.h"
#include "helper.h"
#ifndef MINGW
#include <sys/wait.h>
#endif
#include <GNUnet/gnunet_util.h>
#include <GNUnet/gnunet_protocols.h>
/**
* Checks if gnunetd is running
*
* NOTE: Uses CS_PROTO_CLIENT_COUNT query to determine if
* gnunetd is running
*/
static int checkDaemonRunning(void) {
GNUNET_TCP_SOCKET * sock;
CS_HEADER csHdr;
int ret;
sock = getClientSocket();
if(sock == NULL) {
BREAK();
return SYSERR;
}
csHdr.size
= htons(sizeof(CS_HEADER));
csHdr.type
= htons(CS_PROTO_CLIENT_COUNT);
if (SYSERR == writeToSocket(sock,
&csHdr)) {
LOG(LOG_DEBUG,
_("gnunetd is NOT running.\n"));
releaseClientSocket(sock);
return SYSERR;
}
if (SYSERR == readTCPResult(sock,
&ret)) {
releaseClientSocket(sock);
return SYSERR;
}
releaseClientSocket(sock);
return OK;
}
#if LINUX || OSX || SOLARIS || SOMEBSD
static int launchWithExec() {
pid_t pid;
pid = fork();
if (pid == 0) {
char * args[4];
char * path;
char * cp;
path = NULL;
cp = getConfigurationString("MAIN",
"ARGV[0]");
if (cp != NULL) {
int i = strlen(cp);
while ( (i >= 0) &&
(cp[i] != DIR_SEPARATOR) )
i--;
if ( i != -1 ) {
cp[i+1] = '\0';
path = MALLOC(i+1+strlen("gnunetd"));
strcpy(path, cp);
strcat(path, "gnunetd");
args[0] = path;
FREE(cp);
} else {
args[0] = "gnunetd";
}
}
cp = getConfigurationString("GNUNET-GTK",
"GNUNETD-CONFIG");
if (cp != NULL) {
args[1] = "-c";
args[2] = cp;
} else {
args[1] = NULL;
}
args[3] = NULL;
errno = 0;
nice(10); /* return value is not well-defined */
if (errno != 0)
LOG_STRERROR(LOG_WARNING, "nice");
if (path != NULL)
execv(path,
args);
else
execvp("gnunetd",
args);
LOG_STRERROR(LOG_FAILURE, "exec");
LOG(LOG_FAILURE,
_("Attempted path to '%s' was '%s'.\n"),
"gnunetd",
(path == NULL) ? "gnunetd" : path);
FREENONNULL(path); /* yeah, right, like we're likely to get
here... */
FREENONNULL(args[1]);
_exit(-1);
} else {
pid_t ret;
int status;
ret = waitpid(pid, &status, 0);
if (ret == -1) {
LOG_STRERROR(LOG_ERROR, "waitpid");
return SYSERR;
}
if ( (WIFEXITED(status) &&
(0 != WEXITSTATUS(status)) ) ) {
guiMessage(_("Starting gnunetd failed, error code: %d"),
WEXITSTATUS(status));
return SYSERR;
}
#ifdef WCOREDUMP
if (WCOREDUMP(status)) {
guiMessage(_("Starting gnunetd failed (core dumped)."));
return SYSERR;
}
#endif
if (WIFSIGNALED(status) ||
WTERMSIG(status) ) {
guiMessage(_("Starting gnunetd failed (aborted by signal)."));
return SYSERR;
}
return OK;
}
}
#endif
static int doLaunch() {
#if LINUX || OSX || SOLARIS || SOMEBSD
return launchWithExec();
#elif MINGW
char szCall[_MAX_PATH + 1], szWd[_MAX_PATH + 1], szCWd[_MAX_PATH + 1];
char *args[1];
conv_to_win_path("/bin/gnunetd.exe", szCall);
conv_to_win_path("/bin", szWd);
_getcwd(szCWd, _MAX_PATH);
chdir(szWd);
args[0] = NULL;
spawnvp(_P_NOWAIT, szCall, (const char *const *) args);
chdir(szCWd);
return OK;
#else
/* any system out there that does not support THIS!? */
system("gnunetd"); /* we may not have nice,
so let's be minimalistic here. */
return OK;
#endif
}
/**
* Launch gnunetd w/ checks
*/
void on_startDaemon_clicked(GtkWidget * widget,
gpointer data) {
GtkWidget * launchEntry = NULL;
launchEntry
= glade_xml_get_widget(mainXML,
"startDaemon");
gtk_widget_set_sensitive(launchEntry, FALSE);
if (OK == checkDaemonRunning() ) {
cronCheckDaemon(NULL);
return;
} else {
addLogEntry(_("Launching gnunetd..."));
doLaunch();
}
}
/**
* Kill gnunetd
*/
void on_stopDaemon_clicked(GtkWidget * widget,
gpointer data) {
GtkWidget * killEntry = NULL;
killEntry
= glade_xml_get_widget(mainXML,
"stopDaemon");
gtk_widget_set_sensitive(killEntry, FALSE);
if (OK == checkDaemonRunning() ) {
GNUNET_TCP_SOCKET * sock;
CS_HEADER csHdr;
int ret;
sock = getClientSocket();
if (sock == NULL) {
cronCheckDaemon(NULL);
/* well, probably already dead */
return;
}
csHdr.size
= htons(sizeof(CS_HEADER));
csHdr.type
= htons(CS_PROTO_SHUTDOWN_REQUEST);
if (SYSERR == writeToSocket(sock,
&csHdr)) {
guiMessage(_("Error sending shutdown request to gnunetd."));
releaseClientSocket(sock);
cronCheckDaemon(NULL);
return;
}
if (SYSERR == readTCPResult(sock,
&ret)) {
guiMessage(_("Error reading shutdown confirmation from gnunetd."));
releaseClientSocket(sock);
cronCheckDaemon(NULL);
return;
}
if (ret == OK) {
static GtkWidget * killEntry;
killEntry
= glade_xml_get_widget(mainXML,
"stopDaemon");
gtk_widget_set_sensitive(killEntry, FALSE);
addLogEntry(_("Terminating gnunetd..."));
} else {
guiMessage(_("gnunetd refused to shut down (error code '%d')."),
ret);
}
releaseClientSocket(sock);
}
cronCheckDaemon(NULL);
}
static gint doUpdateMenus(SaveCall * call) {
static GtkWidget * killEntry = NULL;
static GtkWidget * launchEntry = NULL;
static GtkWidget * statsEntryYes = NULL;
static GtkWidget * statsEntryNo = NULL;
static int once = 1;
static int isLocal;
char * host;
int ret;
ret = * (int*) call->args;
if (once) {
once = 0;
killEntry
= glade_xml_get_widget(mainXML,
"stopDaemon");
launchEntry
= glade_xml_get_widget(mainXML,
"startDaemon");
statsEntryYes
= glade_xml_get_widget(mainXML,
"statusPixmapYes");
statsEntryNo
= glade_xml_get_widget(mainXML,
"statusPixmapNo");
host = getConfigurationString("NETWORK",
"HOST");
if ( (host == NULL) ||
(strcmp(host, "localhost")==0) )
isLocal = TRUE;
else
isLocal = FALSE;
FREENONNULL(host);
}
if (ret == SYSERR) {
gtk_widget_hide(statsEntryYes);
gtk_widget_show_all(statsEntryNo);
gtk_widget_set_sensitive(killEntry, FALSE);
gtk_widget_set_sensitive(launchEntry, (TRUE & isLocal) );
} else {
gtk_widget_hide(statsEntryNo);
gtk_widget_show_all(statsEntryYes);
gtk_widget_set_sensitive(killEntry, TRUE);
gtk_widget_set_sensitive(launchEntry, FALSE);
}
gtkSaveCallDone(call->sem);
return FALSE;
}
void cronCheckDaemon(void * dummy) {
static int last = 42;
int ret;
ret = checkDaemonRunning();
if (ret != last) {
last = ret;
gtkSaveCall((GtkFunction) doUpdateMenus, &ret);
}
}
/* end of daemon.c */
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