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-rw-r--r--vdr.c214
1 files changed, 155 insertions, 59 deletions
diff --git a/vdr.c b/vdr.c
index 8b206f9..a476a25 100644
--- a/vdr.c
+++ b/vdr.c
@@ -1,7 +1,7 @@
/*
* vdr.c: Video Disk Recorder main program
*
- * Copyright (C) 2000, 2003 Klaus Schmidinger
+ * Copyright (C) 2000, 2003, 2006 Klaus Schmidinger
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -22,13 +22,17 @@
*
* The project's page is at http://www.cadsoft.de/vdr
*
- * $Id: vdr.c 1.220 2005/11/27 15:56:18 kls Exp $
+ * $Id: vdr.c 1.233 2006/01/08 11:49:03 kls Exp $
*/
#include <getopt.h>
+#include <grp.h>
#include <locale.h>
+#include <pwd.h>
#include <signal.h>
#include <stdlib.h>
+#include <sys/capability.h>
+#include <sys/prctl.h>
#include <termios.h>
#include <unistd.h>
#include "audio.h"
@@ -72,6 +76,57 @@
static int Interrupted = 0;
+static bool SetUser(const char *UserName)
+{
+ if (UserName) {
+ struct passwd *user = getpwnam(UserName);
+ if (!user) {
+ fprintf(stderr, "vdr: unknown user: '%s'\n", UserName);
+ return false;
+ }
+ if (setgid(user->pw_gid) < 0) {
+ fprintf(stderr, "vdr: cannot set group id %u: %s\n", (unsigned int)user->pw_gid, strerror(errno));
+ return false;
+ }
+ if (initgroups(user->pw_name, user->pw_gid) < 0) {
+ fprintf(stderr, "vdr: cannot set supplemental group ids for user %s: %s\n", user->pw_name, strerror(errno));
+ return false;
+ }
+ if (setuid(user->pw_uid) < 0) {
+ fprintf(stderr, "vdr: cannot set user id %u: %s\n", (unsigned int)user->pw_uid, strerror(errno));
+ return false;
+ }
+ }
+ return true;
+}
+
+static bool SetCapSysTime(void)
+{
+ // drop all capabilities except cap_sys_time
+ cap_t caps = cap_from_text("= cap_sys_time=ep");
+ if (!caps) {
+ fprintf(stderr, "vdr: cap_from_text failed: %s\n", strerror(errno));
+ return false;
+ }
+ if (cap_set_proc(caps) == -1) {
+ fprintf(stderr, "vdr: cap_set_proc failed: %s\n", strerror(errno));
+ cap_free(caps);
+ return false;
+ }
+ cap_free(caps);
+ return true;
+}
+
+static bool SetKeepCaps(bool On)
+{
+ // set keeping capabilities during setuid() on/off
+ if (prctl(PR_SET_KEEPCAPS, On ? 1 : 0, 0, 0, 0) != 0) {
+ fprintf(stderr, "vdr: prctl failed\n");
+ return false;
+ }
+ return true;
+}
+
static void SignalHandler(int signum)
{
if (signum != SIGPIPE) {
@@ -102,11 +157,14 @@ int main(int argc, char *argv[])
// Command line options:
+#define DEFAULTVDRUSER "vdr"
#define DEFAULTSVDRPPORT 2001
#define DEFAULTWATCHDOG 0 // seconds
#define DEFAULTPLUGINDIR PLUGINDIR
#define DEFAULTEPGDATAFILENAME "epg.data"
+ bool StartedAsRoot = false;
+ const char *VdrUser = DEFAULTVDRUSER;
int SVDRPport = DEFAULTSVDRPPORT;
const char *AudioCommand = NULL;
const char *ConfigDirectory = NULL;
@@ -144,6 +202,7 @@ int main(int argc, char *argv[])
{ "daemon", no_argument, NULL, 'd' },
{ "device", required_argument, NULL, 'D' },
{ "epgfile", required_argument, NULL, 'E' },
+ { "grab", required_argument, NULL, 'g' },
{ "help", no_argument, NULL, 'h' },
{ "lib", required_argument, NULL, 'L' },
{ "lirc", optional_argument, NULL, 'l' | 0x100 },
@@ -156,6 +215,7 @@ int main(int argc, char *argv[])
{ "record", required_argument, NULL, 'r' },
{ "shutdown", required_argument, NULL, 's' },
{ "terminal", required_argument, NULL, 't' },
+ { "user", required_argument, NULL, 'u' },
{ "version", no_argument, NULL, 'V' },
{ "vfat", no_argument, NULL, 'v' | 0x100 },
{ "video", required_argument, NULL, 'v' },
@@ -164,7 +224,7 @@ int main(int argc, char *argv[])
};
int c;
- while ((c = getopt_long(argc, argv, "a:c:dD:E:hl:L:mp:P:r:s:t:v:Vw:", long_options, NULL)) != -1) {
+ while ((c = getopt_long(argc, argv, "a:c:dD:E:g:hl:L:mp:P:r:s:t:u:v:Vw:", long_options, NULL)) != -1) {
switch (c) {
case 'a': AudioCommand = optarg;
break;
@@ -183,6 +243,8 @@ int main(int argc, char *argv[])
break;
case 'E': EpgDataFileName = (*optarg != '-' ? optarg : NULL);
break;
+ case 'g': cSVDRP::SetGrabImageDir(*optarg != '-' ? optarg : NULL);
+ break;
case 'h': DisplayHelp = true;
break;
case 'l': {
@@ -248,6 +310,9 @@ int main(int argc, char *argv[])
return 2;
}
break;
+ case 'u': if (*optarg)
+ VdrUser = optarg;
+ break;
case 'V': DisplayVersion = true;
break;
case 'v' | 0x100:
@@ -270,6 +335,20 @@ int main(int argc, char *argv[])
}
}
+ // Set user id in case we were started as root:
+
+ if (getuid() == 0) {
+ StartedAsRoot = true;
+ if (!SetKeepCaps(true))
+ return 2;
+ if (!SetUser(VdrUser))
+ return 2;
+ if (!SetKeepCaps(false))
+ return 2;
+ if (!SetCapSysTime())
+ return 2;
+ }
+
// Help and version info:
if (DisplayHelp || DisplayVersion) {
@@ -285,11 +364,15 @@ int main(int argc, char *argv[])
" -D NUM, --device=NUM use only the given DVB device (NUM = 0, 1, 2...)\n"
" there may be several -D options (default: all DVB\n"
" devices will be used)\n"
- " -E FILE --epgfile=FILE write the EPG data into the given FILE (default is\n"
+ " -E FILE, --epgfile=FILE write the EPG data into the given FILE (default is\n"
" '%s' in the video directory)\n"
" '-E-' disables this\n"
" if FILE is a directory, the default EPG file will be\n"
" created in that directory\n"
+ " -g DIR, --grab=DIR write images from the SVDRP command GRAB into the\n"
+ " given DIR; DIR must be the full path name of an\n"
+ " existing directory, without any \"..\", double '/'\n"
+ " or symlinks (default: none, same as -g-)\n"
" -h, --help print this help and exit\n"
" -l LEVEL, --log=LEVEL set log level (default: 3)\n"
" 0 = no logging, 1 = errors only,\n"
@@ -309,6 +392,8 @@ int main(int argc, char *argv[])
" -r CMD, --record=CMD call CMD before and after a recording\n"
" -s CMD, --shutdown=CMD call CMD to shutdown the computer\n"
" -t TTY, --terminal=TTY controlling tty\n"
+ " -u USER, --user=USER run as user USER (default: %s); only applicable\n"
+ " if started as root\n"
" -v DIR, --video=DIR use DIR as video directory (default: %s)\n"
" -V, --version print version information and exit\n"
" --vfat encode special characters in recording names to\n"
@@ -321,6 +406,7 @@ int main(int argc, char *argv[])
LIRC_DEVICE,
DEFAULTSVDRPPORT,
RCU_DEVICE,
+ DEFAULTVDRUSER,
VideoDirectory,
DEFAULTWATCHDOG
);
@@ -371,7 +457,7 @@ int main(int argc, char *argv[])
if (DaemonMode) {
if (daemon(1, 0) == -1) {
- fprintf(stderr, "%m\n");
+ fprintf(stderr, "vdr: %m\n");
esyslog("ERROR: %m");
return 2;
}
@@ -385,12 +471,16 @@ int main(int argc, char *argv[])
}
isyslog("VDR version %s started", VDRVERSION);
+ if (StartedAsRoot)
+ isyslog("switched to user '%s'", VdrUser);
+ if (DaemonMode)
+ dsyslog("running as daemon (tid=%d)", cThread::ThreadId());
+ cThread::SetMainThreadId();
// Main program loop variables - need to be here to have them initialized before any EXIT():
cOsdObject *Menu = NULL;
- cOsdObject *Temp = NULL;
- int LastChannel = -1;
+ int LastChannel = 0;
int LastTimerChannel = -1;
int PreviousChannel[2] = { 1, 1 };
int PreviousChannelIndex = 0;
@@ -401,6 +491,7 @@ int main(int argc, char *argv[])
bool ForceShutdown = false;
bool UserShutdown = false;
bool TimerInVpsMargin = false;
+ bool IsInfoMenu = false;
// Load plugins:
@@ -423,7 +514,6 @@ int main(int argc, char *argv[])
Commands.Load(AddDirectory(ConfigDirectory, "commands.conf"), true) &&
RecordingCommands.Load(AddDirectory(ConfigDirectory, "reccmds.conf"), true) &&
SVDRPhosts.Load(AddDirectory(ConfigDirectory, "svdrphosts.conf"), true) &&
- CaDefinitions.Load(AddDirectory(ConfigDirectory, "ca.conf"), true) &&
Keys.Load(AddDirectory(ConfigDirectory, "remote.conf")) &&
KeyMacros.Load(AddDirectory(ConfigDirectory, "keymacros.conf"), true)
))
@@ -434,6 +524,7 @@ int main(int argc, char *argv[])
// Recordings:
Recordings.Update();
+ DeletedRecordings.Update();
// EPG data:
@@ -555,6 +646,8 @@ int main(int argc, char *argv[])
// Main program loop:
+#define DELETE_MENU ((IsInfoMenu &= (Menu == NULL)), delete Menu, Menu = NULL)
+
while (!Interrupted) {
// Handle emergency exits:
if (cThread::EmergencyExit()) {
@@ -576,8 +669,8 @@ int main(int argc, char *argv[])
&& !(LastTimerChannel > 0 && Channels.SwitchTo(LastTimerChannel)) // ...or the one used by the last timer...
&& !cDevice::SwitchChannel(1) // ...or the next higher available one...
&& !cDevice::SwitchChannel(-1)) // ...or the next lower available one
- ;
- }
+ ;
+ }
lastTime = time(NULL); // don't do this too often
LastTimerChannel = -1;
}
@@ -626,7 +719,7 @@ int main(int argc, char *argv[])
// Channel display:
if (!EITScanner.Active() && cDevice::CurrentChannel() != LastChannel) {
if (!Menu)
- Menu = Temp = new cDisplayChannel(cDevice::CurrentChannel(), LastChannel > 0);
+ Menu = new cDisplayChannel(cDevice::CurrentChannel(), LastChannel >= 0);
LastChannel = cDevice::CurrentChannel();
LastChannelChanged = time(NULL);
}
@@ -667,8 +760,10 @@ int main(int argc, char *argv[])
TimerInVpsMargin = true;
}
}
- if (!Menu && Recordings.NeedsUpdate())
+ if (!Menu && Recordings.NeedsUpdate()) {
Recordings.Update();
+ DeletedRecordings.Update();
+ }
// CAM control:
if (!Menu && !cOsd::IsOpen()) {
Menu = CamControl();
@@ -692,22 +787,39 @@ int main(int argc, char *argv[])
// Menu control:
case kMenu:
key = kNone; // nobody else needs to see this key
- if (Menu) {
- DELETENULL(Menu);
- if (!Temp)
- break;
- }
- if (cControl::Control())
+ if (Menu)
+ DELETE_MENU;
+ else if (cControl::Control() && cOsd::IsOpen())
cControl::Control()->Hide();
- Menu = new cMenuMain(cControl::Control());
- Temp = NULL;
+ else
+ Menu = new cMenuMain;
+ break;
+ // Info:
+ case kInfo: {
+ bool WasInfoMenu = IsInfoMenu;
+ DELETE_MENU;
+ if (!WasInfoMenu) {
+ IsInfoMenu = true;
+ if (cControl::Control()) {
+ cControl::Control()->Hide();
+ Menu = cControl::Control()->GetInfo();
+ if (Menu)
+ Menu->Show();
+ else
+ IsInfoMenu = false;
+ }
+ else {
+ cRemote::Put(kOk, true);
+ cRemote::Put(kSchedule, true);
+ }
+ }
+ }
break;
#define DirectMainFunction(function)\
- DELETENULL(Menu);\
+ DELETE_MENU;\
if (cControl::Control())\
cControl::Control()->Hide();\
- Menu = new cMenuMain(cControl::Control(), function);\
- Temp = NULL;\
+ Menu = new cMenuMain(function);\
key = kNone; // nobody else needs to see this key
case kSchedule: DirectMainFunction(osSchedule); break;
case kChannels: DirectMainFunction(osChannels); break;
@@ -717,18 +829,14 @@ int main(int argc, char *argv[])
case kCommands: DirectMainFunction(osCommands); break;
case kUser1 ... kUser9: cRemote::PutMacro(key); key = kNone; break;
case k_Plugin: {
- DELETENULL(Menu);
- Temp = NULL;
+ DELETE_MENU;
if (cControl::Control())
cControl::Control()->Hide();
cPlugin *plugin = cPluginManager::GetPlugin(cRemote::GetPlugin());
if (plugin) {
- Menu = Temp = plugin->MainMenuAction();
- if (Menu) {
+ Menu = plugin->MainMenuAction();
+ if (Menu)
Menu->Show();
- if (Menu->IsMenu())
- ((cOsdMenu*)Menu)->Display();
- }
}
else
esyslog("ERROR: unknown plugin '%s'", cRemote::GetPlugin());
@@ -757,7 +865,7 @@ int main(int argc, char *argv[])
else
cDevice::PrimaryDevice()->SetVolume(NORMALKEY(key) == kVolDn ? -VOLUMEDELTA : VOLUMEDELTA);
if (!Menu && !cOsd::IsOpen())
- Menu = Temp = cDisplayVolume::Create();
+ Menu = cDisplayVolume::Create();
cDisplayVolume::Process(key);
key = kNone; // nobody else needs to see these keys
break;
@@ -765,12 +873,10 @@ int main(int argc, char *argv[])
case kAudio:
if (cControl::Control())
cControl::Control()->Hide();
- if (Temp && !cDisplayTracks::IsOpen()) {
- DELETENULL(Menu);
- Temp = NULL;
+ if (!cDisplayTracks::IsOpen()) {
+ DELETE_MENU;
+ Menu = cDisplayTracks::Create();
}
- if (!Menu && !cOsd::IsOpen())
- Menu = Temp = cDisplayTracks::Create();
else
cDisplayTracks::Process(key);
key = kNone;
@@ -778,8 +884,7 @@ int main(int argc, char *argv[])
// Pausing live video:
case kPause:
if (!cControl::Control()) {
- DELETENULL(Menu);
- Temp = NULL;
+ DELETE_MENU;
if (!cRecordControls::PauseLiveVideo())
Skins.Message(mtError, tr("No free DVB device to record!"));
key = kNone; // nobody else needs to see this key
@@ -797,8 +902,7 @@ int main(int argc, char *argv[])
break;
// Power off:
case kPower: isyslog("Power button pressed");
- DELETENULL(Menu);
- Temp = NULL;
+ DELETE_MENU;
if (!Shutdown) {
Skins.Message(mtError, tr("Can't shutdown - option '-s' not given!"));
break;
@@ -828,53 +932,46 @@ int main(int argc, char *argv[])
state = osEnd;
}
switch (state) {
- case osPause: DELETENULL(Menu);
+ case osPause: DELETE_MENU;
cControl::Shutdown(); // just in case
- Temp = NULL;
if (!cRecordControls::PauseLiveVideo())
Skins.Message(mtError, tr("No free DVB device to record!"));
break;
- case osRecord: DELETENULL(Menu);
- Temp = NULL;
+ case osRecord: DELETE_MENU;
if (cRecordControls::Start())
- ;//XXX Skins.Message(mtInfo, tr("Recording"));
+ Skins.Message(mtInfo, tr("Recording started"));
else
Skins.Message(mtError, tr("No free DVB device to record!"));
break;
case osRecordings:
- DELETENULL(Menu);
+ DELETE_MENU;
cControl::Shutdown();
- Temp = NULL;
- Menu = new cMenuMain(false, osRecordings);
+ Menu = new cMenuMain(osRecordings);
break;
- case osReplay: DELETENULL(Menu);
+ case osReplay: DELETE_MENU;
cControl::Shutdown();
- Temp = NULL;
cControl::Launch(new cReplayControl);
break;
case osStopReplay:
- DELETENULL(Menu);
+ DELETE_MENU;
cControl::Shutdown();
- Temp = NULL;
break;
case osSwitchDvb:
- DELETENULL(Menu);
+ DELETE_MENU;
cControl::Shutdown();
- Temp = NULL;
Skins.Message(mtInfo, tr("Switching primary DVB..."));
cDevice::SetPrimaryDevice(Setup.PrimaryDVB);
break;
- case osPlugin: DELETENULL(Menu);
- Menu = Temp = cMenuMain::PluginOsdObject();
+ case osPlugin: DELETE_MENU;
+ Menu = cMenuMain::PluginOsdObject();
if (Menu)
Menu->Show();
break;
case osBack:
case osEnd: if (Interact == Menu)
- DELETENULL(Menu);
+ DELETE_MENU;
else
cControl::Shutdown();
- Temp = NULL;
break;
default: ;
}
@@ -913,7 +1010,6 @@ int main(int argc, char *argv[])
case kPlay:
if (cReplayControl::LastReplayed()) {
cControl::Shutdown();
- Temp = NULL;
cControl::Launch(new cReplayControl);
}
break;
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-21 06:15:21 +0000