From 12db387ab2607688af53d507482bee77f963e3be Mon Sep 17 00:00:00 2001
From: Stefan Huber <shuber2@gmail.com>
Date: Thu, 24 Apr 2008 15:17:39 +0200
Subject: [PATCH] commiting initial code which works

---
 INSTALL.txt     |  16 ++++
 Makefile.am     |   1 +
 configure.ac    |  39 +++++++++
 src/Makefile.am |   2 +
 src/main.cpp    | 207 ++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 265 insertions(+)
 create mode 100644 INSTALL.txt
 create mode 100644 Makefile.am
 create mode 100644 configure.ac
 create mode 100644 src/Makefile.am
 create mode 100644 src/main.cpp

diff --git a/INSTALL.txt b/INSTALL.txt
new file mode 100644
index 0000000..6781e55
--- /dev/null
+++ b/INSTALL.txt
@@ -0,0 +1,16 @@
+To configure the source code you may execute
+
+	autoreconf --install
+	mkdir -p bin
+	cd bin
+	../configure
+
+After that you can compile & install the project by
+
+	make
+	make install
+
+
+If you want to enable debug-information, you may want to call "../configure --enable-debug"
+
+
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..af437a6
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1 @@
+SUBDIRS = src
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..1473750
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,39 @@
+AC_INIT([runfinite], [1.0], [shuber2@gmx.at])
+AC_CONFIG_AUX_DIR([build-aux])
+AM_INIT_AUTOMAKE([-Wall -Werror foreign])
+
+
+#AC_PROG_CC
+AC_PROG_CXX
+
+
+#Options which will be given by user (taken from configure.in of VRONI)
+AC_DEFUN([ADDOPT],        
+         [AC_ARG_ENABLE($1, AS_HELP_STRING([--enable-$1], [$2 (default is $4)]),
+	 [$3="$enableval"],[$3="$4"])])
+
+
+#Add new options
+ADDOPT(debug, [enable code debugging], with_debug, no)
+
+
+if test "$with_debug" == "yes";
+then
+	CXXFLAGS="-O0 -g"
+else
+	CXXFLAGS="-O2 -DNDEBUG"
+fi
+
+
+#Always add -Wall
+CXXFLAGS+=" -Wall -pthread"
+
+
+
+
+
+
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_FILES([Makefile src/Makefile])
+
+AC_OUTPUT
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..d489a28
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,2 @@
+bin_PROGRAMS = runfinite
+runfinite_SOURCES = main.cpp 
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..5b1ca07
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,207 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <sys/wait.h>
+#include <sys/types.h>
+
+
+
+#define ERR_WRONGARGS	-1
+#define ERR_EXECVE	-2
+#define ERR_FORK	-3
+#define ERR_WAITPID	-4
+#define ERR_KILL	-5
+
+
+
+void printUsage(FILE* out, int argc, char** argv)
+{
+	fprintf(out, "Run command <command> for at least a specific time. Kill\n");
+	fprintf(out, "process executing <command> if time is over. \n");
+	fprintf(out, "\n");
+	fprintf(out, "Usage: %s [options] <command>\n", argv[0]);
+	fprintf(out, "\n");
+	fprintf(out, "Options:\n");
+	fprintf(out, "  -h        Print this help.\n");
+	fprintf(out, "  -t <sec>  Number of seconds.\n");
+	fprintf(out, "  -v        Be verbose.\n");
+}
+
+
+int main(int argc, char** argv)
+{
+	bool argHelp=false;
+	bool argTime=false;
+	bool argVerbose=false;
+	float maxtime=0;
+
+	//Wrong arguments
+	if( argc<=1 )
+	{
+		printUsage(stderr, argc, argv);
+		return ERR_WRONGARGS;
+	}
+
+
+	//Get the argument index of the head of <command>
+	int fiarg=1;
+
+	//Aha, argument -- skip it
+	while( fiarg<argc && strncmp(argv[fiarg], "-", 1)==0 )
+	{
+		//Help option
+		if( strncmp(argv[fiarg], "-h", 2) == 0 )
+		{
+			argHelp = true;
+		}
+
+		//Parse time
+		else if( strncmp(argv[fiarg], "-t", 2) == 0 )
+		{
+			//Time is given -- goto next argument
+			argTime=true;
+			fiarg++;
+			if( fiarg >= argc)
+			{
+				fprintf(stderr, "Missing time.\n");
+				fprintf(stderr, "\n");
+				printUsage(stderr, argc, argv);
+				return ERR_WRONGARGS;
+			}
+
+			//Convert the time given in seconds to float
+			char* endptr;
+			maxtime = strtof( argv[fiarg], &endptr);
+			if( endptr != argv[fiarg] + strlen(argv[fiarg]) ||
+				maxtime<0.0)
+			{
+				fprintf(stderr, "Invalid time.\n");
+				fprintf(stderr, "\n");
+				printUsage(stderr, argc, argv);
+				return ERR_WRONGARGS;
+			}
+		}
+
+		//Help option
+		else if( strncmp(argv[fiarg], "-v", 2) == 0 )
+		{
+			argVerbose = true;
+		}
+
+
+		//Unknown option
+		else
+		{
+			fprintf(stderr, "Invalid argument: %s\n", argv[fiarg]);
+			fprintf(stderr, "\n");
+			printUsage(stderr, argc, argv);
+			return ERR_WRONGARGS;
+		}
+
+		//Goto next argument
+		fiarg++;
+	}
+
+
+	//Print help
+	if( argHelp )
+	{
+		printUsage(stdout, argc, argv);
+		return 0;
+	}
+
+
+	//No time given...
+	if( !argTime )
+	{
+		fprintf(stderr, "No time given!\n");
+		fprintf(stderr, "\n");
+		printUsage(stderr, argc, argv);
+		return ERR_WRONGARGS;
+	}
+
+	//No command left
+	if( fiarg>=argc )
+	{
+		fprintf(stderr, "No command given!\n");
+		fprintf(stderr, "\n");
+		printUsage(stderr, argc, argv);
+		return ERR_WRONGARGS;
+	}
+
+
+
+	//Fork process
+	pid_t pid = fork();
+
+
+	//Childrens code...
+	if( pid == 0)
+	{
+		char** newargv = (char**) malloc( sizeof(char*)*(argc-fiarg+1) );
+		char* newenv[] = {NULL};
+
+		//Copy arguments
+		for( int i=fiarg; i<argc; i++)
+		{
+			newargv[i-fiarg] = (char*)malloc(strlen(argv[i])+1);
+			strcpy(newargv[i-fiarg], argv[i]);
+		}
+		newargv[argc-fiarg] = NULL;
+
+
+		//Execute child process
+		execve(newargv[0], newargv, newenv);
+		perror("execve");
+		return ERR_EXECVE;
+	}
+	//Parents code...
+	else
+	{
+		//Failure
+		if(pid==-1)
+		{
+			perror("fork");
+			return ERR_FORK;
+		}
+
+
+		//Nmb of loops=seconds
+		float loops=0;		
+		//Status flags of child process	
+		int status, w;
+
+		do
+		{
+			//Kill the child
+			if( loops >= maxtime )
+			{
+				if( argVerbose )
+					printf("Kill child...\n");
+
+				if( kill(pid, SIGTERM ) < 0)
+					break;
+			}
+
+			//Sleep a round
+			sleep(1);
+			loops++;
+
+			//Test for child
+			if( waitpid(-1, &status, WNOHANG | WUNTRACED | WCONTINUED) < 0 )
+				break;
+
+		}while( !WIFEXITED(status) );
+	}
+
+
+	if( argVerbose)
+		printf("Finished\n");
+
+	return 0;
+}
+
+
-- 
2.39.5