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shutdown.c
293 lines (262 loc) · 10.8 KB
/
shutdown.c
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#include "shutdown.h"
#include "common.h"
#include "helper.h"
#include <vdr/cutter.h>
#include <vdr/menu.h>
#include <vdr/plugin.h>
#include <vdr/remote.h>
#include <vdr/shutdown.h>
#include <vdr/timers.h>
class cDBusShutdownHelper
{
public:
static const char *_xmlNodeInfo;
static void SendReply(GDBusMethodInvocation *Invocation, int ReplyCode, const char *ReplyMessage, int ShExitCode, const char *ShParameter)
{
GVariantBuilder *builder = g_variant_builder_new(G_VARIANT_TYPE("(isis)"));
g_variant_builder_add(builder, "i", ReplyCode);
g_variant_builder_add(builder, "s", ReplyMessage);
g_variant_builder_add(builder, "i", ShExitCode);
g_variant_builder_add(builder, "s", ShParameter);
g_dbus_method_invocation_return_value(Invocation, g_variant_builder_end(builder));
g_variant_builder_unref(builder);
};
static void IsUserActive(cDBusObject *Object, GVariant *Parameters, GDBusMethodInvocation *Invocation)
{
gboolean active = !ShutdownHandler.IsUserInactive();
g_dbus_method_invocation_return_value(Invocation, g_variant_new("(b)", active));
}
static void ConfirmShutdown(cDBusObject *Object, GVariant *Parameters, GDBusMethodInvocation *Invocation)
{
gboolean ignoreuser = FALSE;
g_variant_get(Parameters, "(b)", &ignoreuser);
// this is nearly a copy of vdr's cShutdownHandler::ConfirmShutdown
// if the original changes take this into account
if (!ignoreuser && !ShutdownHandler.IsUserInactive()) {
SendReply(Invocation, 901, "user is active", 0, "");
return;
}
#if APIVERSNUM > 20101
if (RecordingsHandler.Active()) {
#else
if (cCutter::Active()) {
#endif
SendReply(Invocation, 902, "cutter is active", 0, "");
return;
}
time_t Now = time(NULL);
#if VDRVERSNUM > 20300
LOCK_TIMERS_READ;
const cTimers *timers = Timers;
#else
cTimers *timers = &Timers;
#endif
const cTimer *timer = timers->GetNextActiveTimer();
time_t Next = timer ? timer->StartTime() : 0;
time_t Delta = timer ? Next - Now : 0;
if (cRecordControls::Active() || (Next && Delta <= 0)) {
// VPS recordings in timer end margin may cause Delta <= 0
SendReply(Invocation, 903, "recording is active", 0, "");
return;
}
else if (Next && Delta <= Setup.MinEventTimeout * 60) {
// Timer within Min Event Timeout
SendReply(Invocation, 904, "recording is active in the near future", 0, "");
return;
}
if (cPluginManager::Active(NULL)) {
SendReply(Invocation, 905, "some plugin is active", 0, "");
return;
}
cPlugin *Plugin = cPluginManager::GetNextWakeupPlugin();
time_t NextPlugin = Plugin ? Plugin->WakeupTime() : 0;
Delta = NextPlugin ? NextPlugin - Now : 0;
if (NextPlugin && Delta <= Setup.MinEventTimeout * 60) {
// Plugin wakeup within Min Event Timeout
cString buf = cString::sprintf("plugin %s wakes up in %ld min", Plugin->Name(), Delta / 60);
SendReply(Invocation, 906, *buf, 0, "");
return;
}
// insanity check: ask vdr again, if implementation of ConfirmShutdown has changed...
if (cRemote::Enabled() && !ShutdownHandler.ConfirmShutdown(false)) {
SendReply(Invocation, 550, "vdr is not ready for shutdown", 0, "");
return;
}
if (((*cDBusShutdown::_shutdownHooksDir) != NULL) && (strlen(*cDBusShutdown::_shutdownHooksDir) > 0)
&& ((*cDBusShutdown::_shutdownHooksWrapper) != NULL) && (strlen(*cDBusShutdown::_shutdownHooksWrapper) > 0)) {
if (NextPlugin && (!Next || Next > NextPlugin)) {
Next = NextPlugin;
timer = NULL;
}
Delta = Next ? Next - Now : 0;
char *tmp;
if (Next && timer)
tmp = strdup(*cString::sprintf("%ld %ld %d \"%s\" %d", Next, Delta, timer->Channel()->Number(), *strescape(timer->File(), "\\\"$"), false));
else if (Next && Plugin)
tmp = strdup(*cString::sprintf("%ld %ld %d \"%s\" %d", Next, Delta, 0, Plugin->Name(), false));
else
tmp = strdup(*cString::sprintf("%ld %ld %d \"%s\" %d", Next, Delta, 0, "", false));
cString params = strescape(tmp, "\\\"");
cString shutdowncmd;
cString cmd = cString::sprintf("%s %s \"%s\"", *cDBusShutdown::_shutdownHooksWrapper, *cDBusShutdown::_shutdownHooksDir, *params);
if (access(*cDBusShutdown::_shutdownHooksWrapper, X_OK) != 0)
cmd = cString::sprintf("/bin/sh %s %s \"%s\"", *cDBusShutdown::_shutdownHooksWrapper, *cDBusShutdown::_shutdownHooksDir, *params);
isyslog("dbus2vdr: calling shutdown-hook-wrapper %s", *cmd);
tmp = NULL;
cExitPipe p;
int ret = -1;
if (p.Open(*cmd, "r")) {
int l = 0;
int c;
while ((c = fgetc(p)) != EOF) {
if (l % 20 == 0) {
if (char *NewBuffer = (char *)realloc(tmp, l + 21))
tmp = NewBuffer;
else {
esyslog("dbus2vdr: out of memory");
break;
}
}
tmp[l++] = char(c);
}
if (tmp)
tmp[l] = 0;
ret = p.Close();
}
else
esyslog("dbus2vdr: can't open pipe for command '%s'", *cmd);
cString result(stripspace(tmp), true); // for automatic free
isyslog("dbus2vdr: result(%d) = %s", ret, *result);
if (ret != 0) {
if (*result) {
static const char *message = "ABORT_MESSAGE=\"";
if ((strlen(*result) > strlen(message)) && startswith(*result, message)) {
cString abort_message = tmp + strlen(message);
abort_message.Truncate(-1);
SendReply(Invocation, 992, *abort_message, ret, "");
return;
}
}
SendReply(Invocation, 999, "shutdown-hook returned a non-zero exit code", ret, "");
return;
}
if (*result) {
static const char *message = "TRY_AGAIN=\"";
if ((strlen(*result) > strlen(message)) && startswith(*result, message)) {
cString s_try_again = tmp + strlen(message);
s_try_again.Truncate(-1);
if ((strlen(*s_try_again) > 0) && isnumber(*s_try_again)) {
int try_again = strtol(s_try_again, NULL, 10);
if (try_again > 0) {
SendReply(Invocation, 991, *s_try_again, 0, "");
return;
}
}
}
}
if (*result) {
static const char *message = "SHUTDOWNCMD=\"";
if ((strlen(*result) > strlen(message)) && startswith(*result, message)) {
shutdowncmd = tmp + strlen(message);
shutdowncmd.Truncate(-1);
}
}
if (*shutdowncmd && (strlen(*shutdowncmd) > 0)) {
SendReply(Invocation, 990, *shutdowncmd, 0, *params);
return;
}
}
SendReply(Invocation, 250, "vdr is ready for shutdown", 0, "");
};
static void ManualStart(cDBusObject *Object, GVariant *Parameters, GDBusMethodInvocation *Invocation)
{
gboolean manual = FALSE;
time_t Delta = Setup.NextWakeupTime ? Setup.NextWakeupTime - cDBusShutdown::StartupTime : 0;
if (!Setup.NextWakeupTime || (abs(Delta) > 600)) // 600 comes from vdr's MANUALSTART constant in vdr.c
manual = TRUE;
g_dbus_method_invocation_return_value(Invocation, g_variant_new("(b)", manual));
};
static void NextWakeupTime(cDBusObject *Object, GVariant *Parameters, GDBusMethodInvocation *Invocation)
{
time_t nextWakeupTime = 0;
cString info = "";
time_t Now = time(NULL);
#if VDRVERSNUM > 20300
LOCK_TIMERS_READ;
const cTimers *timers = Timers;
#else
cTimers *timers = &Timers;
#endif
const cTimer *timer = timers->GetNextActiveTimer();
time_t Next = timer ? timer->StartTime() : 0;
cPlugin *Plugin = cPluginManager::GetNextWakeupPlugin();
time_t NextPlugin = Plugin ? Plugin->WakeupTime() : 0;
if (Next > Now) {
nextWakeupTime = Next;
info = "timer";
}
if (NextPlugin > Now) {
if (NextPlugin < nextWakeupTime) {
nextWakeupTime = NextPlugin;
info = cString::sprintf("plugin:%s", Plugin->Name());
}
}
g_dbus_method_invocation_return_value(Invocation, g_variant_new("(xs)", (gint64)nextWakeupTime, *info));
};
static void SetUserInactive(cDBusObject *Object, GVariant *Parameters, GDBusMethodInvocation *Invocation)
{
ShutdownHandler.SetUserInactive();
cDBusHelper::SendReply(Invocation, 250, "vdr is set to non-interactive mode");
};
};
const char *cDBusShutdownHelper::_xmlNodeInfo =
"<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n"
" \"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
"<node>\n"
" <interface name=\""DBUS_VDR_SHUTDOWN_INTERFACE"\">\n"
" <method name=\"IsUserActive\">\n"
" <arg name=\"active\" type=\"b\" direction=\"out\"/>\n"
" </method>\n"
" <method name=\"ConfirmShutdown\">\n"
" <arg name=\"ignoreuser\" type=\"b\" direction=\"in\"/>\n"
" <arg name=\"replycode\" type=\"i\" direction=\"out\"/>\n"
" <arg name=\"replymessage\" type=\"s\" direction=\"out\"/>\n"
" <arg name=\"shexitcode\" type=\"i\" direction=\"out\"/>\n"
" <arg name=\"shparameter\" type=\"s\" direction=\"out\"/>\n"
" </method>\n"
" <method name=\"ManualStart\">\n"
" <arg name=\"manual\" type=\"b\" direction=\"out\"/>\n"
" </method>\n"
" <method name=\"NextWakeupTime\">\n"
" <arg name=\"timestamp\" type=\"x\" direction=\"out\"/>\n"
" <arg name=\"info\" type=\"s\" direction=\"out\"/>\n"
" </method>\n"
" <method name=\"SetUserInactive\">\n"
" <arg name=\"replycode\" type=\"i\" direction=\"out\"/>\n"
" <arg name=\"replymessage\" type=\"s\" direction=\"out\"/>\n"
" </method>\n"
" </interface>\n"
"</node>\n";
time_t cDBusShutdown::StartupTime;
cString cDBusShutdown::_shutdownHooksDir;
cString cDBusShutdown::_shutdownHooksWrapper;
void cDBusShutdown::SetShutdownHooksDir(const char *Dir)
{
_shutdownHooksDir = cString( Dir);
}
void cDBusShutdown::SetShutdownHooksWrapper(const char *Wrapper)
{
_shutdownHooksWrapper = cString( Wrapper);
}
cDBusShutdown::cDBusShutdown(void)
:cDBusObject("/Shutdown", cDBusShutdownHelper::_xmlNodeInfo)
{
AddMethod("IsUserActive", cDBusShutdownHelper::IsUserActive);
AddMethod("ConfirmShutdown" , cDBusShutdownHelper::ConfirmShutdown);
AddMethod("ManualStart" , cDBusShutdownHelper::ManualStart);
AddMethod("NextWakeupTime" , cDBusShutdownHelper::NextWakeupTime);
AddMethod("SetUserInactive" , cDBusShutdownHelper::SetUserInactive);
}
cDBusShutdown::~cDBusShutdown(void)
{
}