From 2dd4be5a6247eb967789b3ed2cca0f90d015ed93 Mon Sep 17 00:00:00 2001
From: joshholtrop <joshholtrop@8131a0b2-b21c-1c47-bd6a-f003126495bd>
Date: Wed, 19 Aug 2009 18:48:24 +0000
Subject: [PATCH] added Config::reset() to support re-reading the config file,
 added PPPC::event_*() stubs to handle events and PPPC::update_pins() to write
 to the pport

git-svn-id: http://apu.dw.local/svnusers/JoshHoltrop/pppc/trunk@56 8131a0b2-b21c-1c47-bd6a-f003126495bd
---
 Config.cc | 13 ++++++++++++-
 Config.h  |  1 +
 pppc.cc   | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++----
 pppc.h    |  8 ++++++++
 4 files changed, 74 insertions(+), 5 deletions(-)

diff --git a/Config.cc b/Config.cc
index d20d517..0961c05 100644
--- a/Config.cc
+++ b/Config.cc
@@ -17,12 +17,19 @@ Config::Entry::Entry(const string & name)
 }
 
 Config::Config()
+{
+    reset();
+}
+
+void Config::reset()
 {
     port = "LPT1";                  /* default to first parallel port */
+    entries.clear();                /* erase any entries previously configured */
 }
 
 void Config::read(const char * file)
 {
+    reset();
     ifstream ifs(file);
     if (ifs.is_open())
     {
@@ -68,7 +75,11 @@ void Config::read(const char * file)
             {
                 if      (parts.first == "pin")
                 {
-                    entries[entry_num].pin = atoi(parts.second.c_str());
+                    int pin = atoi(parts.second.c_str());
+                    if (pin >= 0 && pin <= 7)
+                        entries[entry_num].pin = pin;
+                    else
+                        cerr << "Bad pin #: " << parts.second << endl;
                 }
                 else if (parts.first == "on_start")
                 {
diff --git a/Config.h b/Config.h
index d8ede6e..c120192 100644
--- a/Config.h
+++ b/Config.h
@@ -31,6 +31,7 @@ class Config
         void read(const char * file);
 
     protected:
+        void reset();
         std::pair<std::string, std::string> split(const std::string & line);
         Action parseAction(const std::string & str);
 };
diff --git a/pppc.cc b/pppc.cc
index 1849bc4..89218a7 100644
--- a/pppc.cc
+++ b/pppc.cc
@@ -11,6 +11,11 @@
 #include "pppc.h"
 using namespace std;
 
+#define SET_BIT(var,position,value) \
+    (var) = ((var) & (~(1 << (position)))) | ((value) << (position))
+#define GET_BIT(var,position) \
+    (((var) >> (position)) & 0x1)
+
 static LRESULT WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
 
 int WinMain(
@@ -91,11 +96,15 @@ void addMenuItem(HMENU hMenu, CHAR * itemstr, WORD id)
 
 PPPC::PPPC(HINSTANCE hInstance, const char * config_file)
 {
+    m_pins = 0u;
+
     if (config_file != NULL)
     {
         m_config.read(config_file);
     }
 
+    event_start();
+
     /* Load the application icon */
     HICON icon = ::LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ICON1));
     if (icon == 0)
@@ -151,7 +160,6 @@ PPPC::PPPC(HINSTANCE hInstance, const char * config_file)
 
     /* begin capturing session notifications */
     session_notification_enable(m_hWnd);
-
 }
 
 BOOL PPPC::mainLoop()
@@ -179,12 +187,12 @@ BOOL PPPC::mainLoop()
                 if (msg.wParam == WTS_SESSION_LOGON
                  || msg.wParam == WTS_SESSION_UNLOCK)
                 {
-                    pport_write(0xFF);
+                    event_unlock();
                 }
                 if (msg.wParam == WTS_SESSION_LOGOFF
                  || msg.wParam == WTS_SESSION_LOCK)
                 {
-                    pport_write(0x0);
+                    event_lock();
                 }
                 break;
             case WM_COMMAND:
@@ -195,7 +203,6 @@ BOOL PPPC::mainLoop()
                         break;
                 }
                 break;
-                break;
         }
     }
 
@@ -204,9 +211,51 @@ BOOL PPPC::mainLoop()
 
 PPPC::~PPPC()
 {
+    event_exit();
+
     /* delete the tray icon */
     Shell_NotifyIcon(NIM_DELETE, &m_nid);
 
     /* stop listening for session notifications */
     session_notification_disable(m_hWnd);
 }
+
+void PPPC::event_start()
+{
+    for (int sz = m_config.entries.size(), i = 0; i < sz; i++)
+    {
+        switch (m_config.entries[i].on_start)
+        {
+            case Config::ON:
+                SET_BIT(m_pins, m_config.entries[i].pin, 1);
+                break;
+            case Config::OFF:
+                SET_BIT(m_pins, m_config.entries[i].pin, 0);
+                break;
+            default:
+                break;
+        }
+    }
+    update_pins();
+}
+
+void PPPC::event_exit()
+{
+    update_pins();
+}
+
+void PPPC::event_lock()
+{
+    update_pins();
+    m_previous_pins = m_pins;
+}
+
+void PPPC::event_unlock()
+{
+    update_pins();
+}
+
+void PPPC::update_pins()
+{
+    pport_write(m_pins);
+}
diff --git a/pppc.h b/pppc.h
index f2bafca..20ca4dd 100644
--- a/pppc.h
+++ b/pppc.h
@@ -15,9 +15,17 @@ class PPPC
         BOOL mainLoop();
 
     protected:
+        void    event_start();
+        void    event_exit();
+        void    event_lock();
+        void    event_unlock();
+        void    update_pins();
+
         Config          m_config;
         HWND            m_hWnd;
         NOTIFYICONDATA  m_nid;
+        unsigned char   m_pins;
+        unsigned char   m_previous_pins;
 };
 
 /* non class-member functions */