Add functions for handling /etc/lircd.conf; do basic check of /etc/lircd.conf before attempting to commit in order to avoid timeouts

2 files changed, 174 insertions, 0 deletions

diff --git a/noncore/tools/remote/lirchandler.cpp b/noncore/tools/remote/lirchandler.cpp
index ec1e275..6022573 100644
--- a/noncore/tools/remote/lirchandler.cpp
+++ b/noncore/tools/remote/lirchandler.cpp
@@ -1,144 +1,149 @@
 /*
 Opie-Remote.  emulates remote controls on an iPaq (and maybe a Zaurus) in Opie.
 Copyright (C) 2007 Paul Eggleton & Thomas Stephens
 
 This program 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 of the License, or (at your option) any later
 version.
 
 This program 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 this program; if not, write to the Free
 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <unistd.h>
 #include <errno.h>
 
 #include <qstring.h>
 #include <qmessagebox.h>
 #include <qobject.h>
+#include <qtextstream.h>
 #include <opie2/oprocess.h>
 #include <qpe/qcopenvelope_qws.h>
 
 #include "lirchandler.h"
 
 #define PACKET_SIZE 256
 #define TIMEOUT 3
 #define LIRCD_SOCKET "/dev/lircd"
 #define LIRCD_SERVICECMD "/etc/init.d/lircd"
+#define LIRCD_CONF "/etc/lircd.conf"
 
 using namespace Opie::Core;
 
 LircHandler::LircHandler(void)
 {
 	fd = 0;
 	addr.sun_family=AF_UNIX;
 	strcpy(addr.sun_path, LIRCD_SOCKET);
 }
 
 bool LircHandler::connectLirc(void)
 {
+	if(!checkLircdConfValid(false))
+		return false;
+	
 	fd = socket(AF_UNIX, SOCK_STREAM, 0);
 	if(fd == -1)
 	{
 		QMessageBox mb(QObject::tr("Error"),
 											QObject::tr("Unable to create socket"),
 											QMessageBox::Critical,
 											QMessageBox::Ok,
 											QMessageBox::NoButton,
 											QMessageBox::NoButton);
 		mb.exec();
 		perror("LircHandler::connectLirc");
 		return false;
 	}
 	
 	if(::connect(fd,(struct sockaddr *) &addr, sizeof(addr) ) == -1)
 	{
 		QMessageBox mb(QObject::tr("Error"),
 											QObject::tr("Could not connect to lircd"),
 											QMessageBox::Critical,
 											QMessageBox::Ok,
 											QMessageBox::NoButton,
 											QMessageBox::NoButton);
 		mb.exec();
 		perror("LircHandler::connectLirc");
 		return false;
 	}
 	
 	return true;
 }
 
 //this function was ripped for rc.c in xrc, it is available here: http://www.lirc.org/software.html
 const char *LircHandler::readPacket()
 {
 	static char buffer[PACKET_SIZE+1]="";
 	char *end;
 	static int ptr=0;
 	ssize_t ret;
 	int timeout = 0;
 
 	if(ptr>0)
 	{
 		memmove(buffer,buffer+ptr,strlen(buffer+ptr)+1);
 		ptr=strlen(buffer);
 		end=strchr(buffer,'\n');
 	}
 	else
 	{
 		end=NULL;
 	}
 	alarm(TIMEOUT);
 	while(end==NULL)
 	{
 		if(PACKET_SIZE<=ptr)
 		{
 			fprintf(stderr,"readPacket: bad packet\n");
 			ptr=0;
 			return(NULL);
 		}
 		ret=read(fd,buffer+ptr,PACKET_SIZE-ptr);
 
 		if(ret<=0 || timeout)
 		{
 			if(timeout)
 			{
 				fprintf(stderr,"readPacket: timeout\n");
 			}
 			else
 			{
 				alarm(0);
 			}
 			ptr=0;
 			return(NULL);
 		}
 		buffer[ptr+ret]=0;
 		ptr=strlen(buffer);
 		end=strchr(buffer,'\n');
 	}
 	alarm(0);
 
 	end[0]=0;
 	ptr=strlen(buffer)+1;
 //#       ifdef DEBUG
 //	printf("buffer: -%s-\n",buffer);
 //#       endif
 	return(buffer);
 }
 
 QStringList LircHandler::getRemotes(void)
 {
 	const char write_buffer[] = "LIST\n";
 	const char *readbuffer;
 	int i, numlines;
 	QStringList list;
 	
 	if(connectLirc()) {
 		write(fd, write_buffer, strlen(write_buffer) );
@@ -176,118 +181,279 @@ QStringList LircHandler::getRemotes(void)
 
 QStringList LircHandler::getButtons(const char *remoteName)
 {
 	QString write_buffer = "LIST ";
 	const char *readbuffer;
 	int i, j, numlines;
 	QStringList list;
 	QString string;
 
 	write_buffer += remoteName;
 	write_buffer += '\n';
 
 	if(connectLirc()) {
 		write(fd, write_buffer.latin1(), strlen(write_buffer) );
 	
 		for(i=0; i<5; i++)
 		{
 			readbuffer = readPacket();
 		}
 	
 		numlines = atoi(readbuffer);
 	
 		for(i=0; i<numlines; i++)
 		{
 			list+=readPacket();
 			for(j=0; j<list[i].length(); j++)
 			{
 				if(list[i][j] == ' ')
 					break;
 			}
 			list[i].remove(0, j+1);
 		}
 
 		if(strcasecmp(readPacket(), "END") != 0)
 		{
 			QMessageBox mb(QObject::tr("Error"),
 												QObject::tr("Bad packet while communicating with lircd"),
 												QMessageBox::Critical,
 												QMessageBox::Ok,
 												QMessageBox::NoButton,
 												QMessageBox::NoButton);
 			mb.exec();
 			perror("LircHandler::getRemotes");
 			return NULL;
 		}
 		
 		::close(fd);
 	}
 		
 	return list;
 }
 
 int LircHandler::sendIR(const char *lircaction)
 {
 	const char *read_buffer;
 	bool done=false;
 
 	if(connectLirc()) {
 		printf("fd2: %d\n", fd);
 		printf("%s", lircaction);
 	
 		printf("1\n");
 		printf("%d\n", write(fd, lircaction, strlen(lircaction) ) );
 		printf("2\n");
 		while(!done)
 		{
 			read_buffer=readPacket();
 			printf("%s\n", read_buffer);
 			if(strcasecmp(read_buffer, "END") == 0)
 			{
 				printf("done reading packet\n");
 				done=true;
 			}
 		}
 		::close(fd);
 		return 1;
 	}
 	else
 		return 0;
 }
 
 bool LircHandler::startLircd(void)
 {
 	return (system(LIRCD_SERVICECMD " start") == 0);
 }
 
 bool LircHandler::stopLircd(void)
 {
 	return (system(LIRCD_SERVICECMD " stop") == 0);
 }
 
 bool LircHandler::isLircdRunning(void)
 {
 	return (OProcess::processPID("lircd") != 0);
 }
 
+void LircHandler::reloadLircdConf(void)
+{
+	int pid = OProcess::processPID("lircd");
+	if(pid > -1)
+		kill(pid, SIGHUP);
+	else
+		startLircd();
+}
+
 bool LircHandler::setupModules(void)
 {
 	// Remove IrDA modules which get in the way
 	system("rmmod ircomm-tty ircomm");
 	// Load LIRC device driver
 	system("modprobe lirc_sir");
 	return true;
 }
 
 bool LircHandler::cleanupModules(void)
 {
 	// Unload LIRC device driver
 	system("rmmod lirc_sir");
 	// Load IrDA drivers back in
 	system("modprobe ircomm-tty");
 	return true;
 }
 
 void LircHandler::disableIrDA(void)
 {
 	QCopEnvelope e("QPE/IrDaApplet", "disableIrda()");
 }
+
+void LircHandler::mergeRemoteConfig(const QString &newconfig)
+{
+	QStringList contents;
+	QStringList newcontents;
+	QFile conf(LIRCD_CONF);
+	QFile newconf(newconfig);
+	
+	readFromFile(conf, contents);
+	readFromFile(newconf, newcontents);
+	contents += newcontents;
+	
+	writeToFile(conf, contents);
+}
+
+void LircHandler::removeRemote(const QString &remotetodelete)
+{
+	QStringList contents;
+	QFile conf(LIRCD_CONF);
+	bool found = false;
+	bool inremote = false;
+	QString remotename("");
+	int lineidx = 0;
+	int startidx = 0;
+	int lastendidx = 0;
+	
+	readFromFile(conf, contents);
+	
+	for (QStringList::Iterator it = contents.begin(); it != contents.end(); ++it ) {
+		QString line = (*it).stripWhiteSpace();
+		if(line == "begin remote") {
+			startidx = lastendidx;
+			inremote = true;
+		}
+		else if(line == "end remote") {
+			lastendidx = lineidx + 1;
+			if(remotename == remotetodelete) {
+				found = true;
+				break;
+			}
+			inremote = false;
+		}
+		else if(inremote && line.left(4) == "name") {
+			remotename = line.mid(4).stripWhiteSpace();
+		}
+		lineidx++;
+	}
+	
+	if(found) {
+		// Remove the remote and any preceding lines (most likely associated comments)
+		int linecount = lastendidx - startidx; 
+		QStringList::Iterator it = contents.at(startidx);
+		for (int i = 0; i < linecount; i++ ) {
+			it = contents.remove(it);
+		}
+		
+		// Check if there is at least one remote still defined
+		found = false;
+		for (it = contents.begin(); it != contents.end(); ++it ) {
+			QString line = (*it).stripWhiteSpace();
+			if(line == "begin remote") {
+				found = true;
+				break;
+			}
+		}
+		
+		if(found)
+			writeToFile(conf, contents);
+		else
+			conf.remove();
+	}
+}
+
+bool LircHandler::checkRemoteExists(const QString &remote)
+{
+	QStringList contents;
+	QFile conf(LIRCD_CONF);
+	bool inremote = false;
+	
+	readFromFile(conf, contents);
+	
+	for (QStringList::Iterator it = contents.begin(); it != contents.end(); ++it ) {
+		QString line = (*it).stripWhiteSpace();
+		if(line == "begin remote") {
+			inremote = true;
+		}
+		else if(line == "end remote") {
+			inremote = false;
+		}
+		else if(inremote && line.left(4) == "name") {
+			QString rname = line.mid(4).stripWhiteSpace();
+			if(rname == remote)
+				return true;
+		}
+	}
+	return false;
+}
+
+bool LircHandler::checkLircdConfValid(bool silent)
+{
+	QStringList contents;
+	QFile conf(LIRCD_CONF);
+	bool inremote = false;
+	
+	if(conf.exists()) {
+		readFromFile(conf, contents);
+		
+		for (QStringList::Iterator it = contents.begin(); it != contents.end(); ++it ) {
+			QString line = (*it).stripWhiteSpace();
+			if(line == "begin remote") {
+				inremote = true;
+			}
+			else if(line == "end remote") {
+				if(inremote)
+					return true;
+			}
+		}
+	}
+	
+	if(!silent) {
+		QMessageBox::information(NULL, QObject::tr("No remote"),
+				QObject::tr("No remotes have been learned.\nPlease go to the Learn tab\nand learn a remote."),
+				QMessageBox::Ok, QMessageBox::NoButton);
+	}
+	
+	return false;
+}
+
+bool LircHandler::readFromFile(QFile &file, QStringList &strlist) 
+{
+	if(file.open(IO_ReadOnly)) {
+		QTextStream in(&file);
+
+		strlist = QStringList::split('\n', in.read(), true);
+		file.close();
+		if(strlist.count() > 0)
+			strlist.remove(strlist.at(strlist.count() - 1));  // remove extra blank line
+	}
+	return true;
+}
+
+bool LircHandler::writeToFile(QFile &file, QStringList &strlist) 
+{
+	if(file.open(IO_WriteOnly | IO_Truncate)) {
+		QTextStream out(&file);
+		for (QStringList::Iterator it = strlist.begin(); it != strlist.end(); ++it ) {
+			out << (*it) << "\n";
+		}
+		file.close();
+	}
+	return true;
+}
diff --git a/noncore/tools/remote/lirchandler.h b/noncore/tools/remote/lirchandler.h
index 4e56b6b..5ba14b7 100644
--- a/noncore/tools/remote/lirchandler.h
+++ b/noncore/tools/remote/lirchandler.h
@@ -1,43 +1,51 @@
 /*
 Opie-Remote.  emulates remote controls on an iPaq (and maybe a Zaurus) in Opie.
 Copyright (C) 2007 Paul Eggleton & Thomas Stephens
 
 This program 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 of the License, or (at your option) any later
 version.
 
 This program 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 this program; if not, write to the Free
 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
 
 #ifndef LIRCHANDLER_H
 #define LIRCHANDLER_H
 
 #include <sys/un.h>
+#include <qfile.h>
 
 class LircHandler
 {
 private:
 	bool connectLirc(void);
 	const char *readPacket();
+	bool readFromFile(QFile &file, QStringList &strlist);
+	bool writeToFile(QFile &file, QStringList &strlist);
 	
 	struct sockaddr_un addr;
 	int fd;
 public:
 	LircHandler(void);
 	QStringList getRemotes(void);
 	QStringList getButtons(const char *remoteName);
 	int sendIR(const char *lircaction);
 	bool startLircd(void);
 	bool stopLircd(void);
 	bool isLircdRunning(void);
+	void reloadLircdConf(void);
 	bool setupModules(void);
 	bool cleanupModules(void);
 	void disableIrDA(void);
+	void mergeRemoteConfig(const QString &newconfig);
+	void removeRemote(const QString &remotetodelete);
+	bool checkRemoteExists(const QString &remote);
+	bool checkLircdConfValid(bool silent);
 };
 
 #endif