Jack Server Settings; text selection in dialogs.

src/BeastServer.cpp

@@ -813,7 +813,11 @@ public:
     void
     do_read()
     {
-        // Set the timer
+        // make the request empty before reading
+        // otherwise the operation behavour is undefined.
+        req_ = {};
+
+        // Set the time
         timer_.expires_after(std::chrono::seconds(15));
 
         // Read a request

src/ConfigMain.cpp

@@ -193,6 +193,59 @@ static bool userExists(const char *userName)
     return true;
 }
 
+void InstallPamEnv()
+{
+    std::string newLine = "JACK_PROMISCOUS_SERVER      DEFAULT=jack";
+    std::vector<std::string> lines;
+    std::filesystem::path path = "/etc/security/pam_env.conf";
+    try
+    {
+        if (std::filesystem::exists(path))
+        {
+            {
+                ifstream f(path);
+                if (!f.is_open())
+                {
+                    throw PiPedalException("Can't open pam_env.conf");
+                }
+                while (true)
+                {
+                    std::string line;
+                    if (f.eof())
+                        break;
+                    std::getline(f, line);
+                    lines.push_back(line);
+                }
+            }
+
+            for (auto &line : lines)
+            {
+                if (line == newLine)
+                {
+                    return;
+                }
+            }
+            lines.push_back(newLine);
+
+            {
+                std::ofstream f(path);
+                if (!f.is_open())
+                {
+                    throw PiPedalException("Can't write to file.");
+                }
+                for (auto&line: lines)
+                {
+                    f << line << endl;
+                }
+            }
+        }
+    }
+    catch (const std::exception &e)
+    {
+        cout  << "Failed to update " << path << ". " << e.what();
+    }
+}
+
 void InstallLimits()
 {
     if (SysExec(GROUPADD_BIN " -f " AUDIO_SERVICE_GROUP_NAME) != EXIT_SUCCESS)
@@ -227,6 +280,7 @@ void MaybeStartJackService()
 void InstallJackService()
 {
     InstallLimits();
+    InstallPamEnv();
     if (SysExec(GROUPADD_BIN " -f " JACK_SERVICE_GROUP_NAME) != EXIT_SUCCESS)
     {
         throw PiPedalException("Failed to create jack service group.");
@@ -554,7 +608,7 @@ int main(int argc, char **argv)
         args.push_back((char *)(pkexec.c_str()));
 
         std::string sPath = GetSelfExePath();
-        args.push_back(const_cast<char*>(sPath.c_str()));
+        args.push_back(const_cast<char *>(sPath.c_str()));
         for (int arg = 1; arg < argc; ++arg)
         {
             args.push_back(const_cast<char *>(argv[arg]));

src/JackHost.cpp

@@ -1275,10 +1275,10 @@ private:
         void ThreadProc()
         {
             this_->restarting = true;
-            this_->Close();
+            // this_->Close(); (JackServerConfiguration now does a service restart.)
             try {
                 ShutdownClient::SetJackServerConfiguration(jackServerSettings);
-                this_->Open(this_->channelSelection);
+                //this_->Open(this_->channelSelection);
                 this_->restarting = false;
                 onComplete(true, "");
                 isComplete = true;

src/JackServerSettings.cpp

@@ -214,20 +214,17 @@ void JackServerSettings::Write()
             output << line << endl;
         }
         // the style used by qjackctl. :-/
+        // Lower to -P70 in order to allow the USB soft-irq to run at higher priority than JACK (it runs at 80).
         output << "/usr/bin/jackd "
-            << "-R -P90"
+            << "-R -P70 --silent"
             << " -dalsa -d" << this->alsaDevice_ 
             << " -r" << this->sampleRate_ 
             << " -p" << this->bufferSize_ 
             << " -n" << this->numberOfBuffers_ << " -Xseq" 
             << endl;
         system("/usr/bin/chmod 755 " DRC_FILENAME);
-        system("pulseaudio --kill");
+        system("/usr/bin/systemctl unmask jack");
         system("/usr/bin/systemctl enable jack");
-        if (system("/usr/bin/systemctl restart jack") != 0)
-        {
-            throw PiPedalException("Failed to start jack audio service.");
-        }
     }
     catch (const std::exception &e)
     {

src/PiPedalModel.cpp

@@ -910,13 +910,17 @@ void PiPedalModel::SetJackServerSettings(const JackServerSettings &jackServerSet
                     Lv2Log::error(s.str().c_str());
                 }
                 // Update jack server status.
-                this->jackConfiguration.SetIsRestarting(false);
                 if (!success)
                 {
+                    this->jackConfiguration.SetIsRestarting(false);
                     this->jackConfiguration.SetErrorStatus(errorMessage);
+                    fireJackConfigurationChanged(this->jackConfiguration);
                 }
                 else
                 {
+                    // we now do a complete restart of the services,
+                    // so just sit tight and wait for the restart.
+#ifdef JUNK
                     this->jackConfiguration.SetErrorStatus("");
                     fireJackConfigurationChanged(this->jackConfiguration);
 
@@ -927,6 +931,7 @@ void PiPedalModel::SetJackServerSettings(const JackServerSettings &jackServerSet
                     jackHost->SetPedalBoard(lv2PedalBoard);
                     updateRealtimeVuSubscriptions();
                     updateRealtimeMonitorPortSubscriptions();
+#endif
                 }
             });
     } 

src/ShutdownMain.cpp

@@ -86,11 +86,16 @@ static void ReleaseAccessPoint(const std::string gatewayAddress)
 void delayedRestartProc()
 {
     sleep(1); // give a chance for websocket messages to propagate.
-    std::string pipedalConfigPath = std::filesystem::path(GetSelfExePath()).parent_path() / "pipedalConfig";
+    Lv2Log::error("Delayed Restart");
+    std::string pipedalConfigPath = std::filesystem::path(GetSelfExePath()).parent_path() / "pipedalconfig";
 
     std::stringstream s;
      s << pipedalConfigPath.c_str() << " --restart --excludeShutdownService";
-     ::system(s.str().c_str());
+    if (::system(s.str().c_str())!= EXIT_SUCCESS)
+    {
+        Lv2Log::error("Delayed Restart failed.");
+
+    }
 }
 
 bool setJackConfiguration(JackServerSettings serverSettings)
@@ -247,8 +252,6 @@ private:
             {
                 auto remainder = s.substr(strlen("setJackConfiguration "));
                 
-                // xxx delete me
-                Lv2Log::error("setJackConfiguration: " + remainder);
 
                 std::stringstream input(remainder);
                 JackServerSettings serverSettings;

src/json.cpp

@@ -60,7 +60,7 @@ void json_writer::write(string_view v,bool enforceValidUtf8Encoding)
 {
     // convert to utf-32.
     // convert utf-32 to normalized utf-16.
-    // write non-7-bit and unsafe characters as \uxxxx.
+    // write non-7-bit and unsafe characters as \uHHHH.
 
     auto p = v.begin();
     os << '"';

src/main.cpp

@@ -579,9 +579,10 @@ int main(int argc, char *argv[])
         PiPedalModel model;
 
         // Pre-populate ALSA device info,wait for jackd service (daemon only)
+        model.GetAlsaDevices(); // pre-cache ALSA devices.
         if (systemd)
         {
-            auto devices = model.GetAlsaDevices();
+            auto devices = model.GetAlsaDevices(); // pre-cache ALSA devices (most especially, the one which Jack will open, that we can no longer read)
 
             auto serverSettings = model.GetJackServerSettings();
             if (serverSettings.IsValid())
@@ -590,7 +591,7 @@ int main(int argc, char *argv[])
                 if (!HasAlsaDevice(devices, serverSettings.GetAlsaDevice()))
                 {
                     Lv2Log::info("Waiting for ALSA device " + serverSettings.GetAlsaDevice());
-                    for (int i = 0; i < 15; ++i)
+                    for (int i = 0; i < 10; ++i)
                     {
                         sleep(1);
                         devices = model.GetAlsaDevices();