init

2023-12-22 22:53:54 -05:00
commit 2821b7e9a1
45 changed files with 8425 additions and 0 deletions
--- a/daemon.c
+++ b/daemon.c
@@ -0,0 +1,148 @@
+
+#undef OSF1
+
+/*
+**      This code written by danny@wildstar.net <-- wildThang -->
+**      You are free to use this code under the stipulation that it
+**      is not used to design any sort of clone/flood, or otherwise harassing
+**      type of application.  I wrote this quickly and tried to keep it as
+**      basic as i could think up but enough to keep it interesting.
+**      Use it to LEARN! let me know if you have questions about it.
+**      -- this notice must remain in all code based on this code.
+*/
+
+
+/* DAEMON.C
+	This file handles moving program into the background.
+	and it also contains the routine needed to establish a port
+	in case of wanting to have it listne to a port as well 
+*/
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <netdb.h>
+#include <time.h>
+#include <ctype.h>
+
+/*#ifdef SIGTSTP */
+#include <sys/ioctl.h>
+#include <sys/file.h>
+/*#endif */
+#include <sys/param.h>
+#include <stdio.h>
+#include <errno.h>
+#include <netinet/in.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <string.h>
+#include <signal.h>
+#include "config.h"
+
+handle_kids()
+{int pid;
+
+#ifdef OSF1
+   union wait *status;
+   while( (pid = wait3(status,WNOHANG, (struct rusage *)0)) > 0) { }
+
+#else
+
+/*   union wait status;
+*/
+   int status;
+   while( (pid = wait3(&status,WNOHANG, (struct rusage *)0)) > 0) { }
+
+#endif /* OSF1 */
+
+}
+
+/* this function releases tty conrol and moves program into background */
+goto_bg()
+{
+register int child,fd;
+        close(0); close(1); close(2);
+
+        if(getppid() == 1) goto out;
+
+#ifdef SIGTTOU
+        signal(SIGTTOU,SIG_IGN);
+#endif
+#ifdef SIGTTIN
+        signal(SIGTTIN,SIG_IGN);
+#endif
+#ifdef SIGTSTP
+        signal(SIGTSTP,SIG_IGN);
+#endif
+
+        if( (child =fork()) < 0)
+                perror("fork");
+        else if (child > 0)
+                exit(0);
+
+#ifdef SIGTSTP
+        if (setpgrp(0,getpid()) == -1)
+                perror("SETGROUP");
+
+        if( (fd = open("/dev/tty",O_RDWR)) >= 0) {
+                ioctl(fd, TIOCNOTTY, (char *)NULL);
+                close(fd);
+        }
+#else
+        if(setpgrp() == -1)
+                perror("set group");
+
+        signal(SIGHUP,SIG_IGN);
+
+        if( (child = fork()) < 0)
+                perror("cant fork");
+        else if (child > 0)
+                exit(0);
+#endif
+
+out:
+        for(fd=0;fd<NOFILE;fd++)
+                close(fd);
+        errno = 0;
+
+
+#ifdef SIGTSTP
+/*
+        signal(SIGCLD, handle_kids);
+*/
+#else
+        signal(SIGCLD, SIG_IGN);
+#endif
+}
+
+/* this routine connects, binds, and listens to a port number */
+int get_port(portnum)
+int portnum;
+{ int sock,l;
+  int opt = 1;
+  static struct sockaddr_in server;
+
+  sock = socket(AF_INET,SOCK_STREAM, 0);
+  if(sock < 0) exit(-1);
+
+#ifdef SO_REUSEADDR
+  if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,&opt,sizeof(opt)) < 0)
+    exit(-1);
+#endif
+
+  server.sin_family = AF_INET;
+  server.sin_addr.s_addr = INADDR_ANY;
+  server.sin_port = htons(portnum);
+
+  for(l=0;l<10;l++)
+  { if(bind(sock, (struct sockaddr *) &server, sizeof(server)))
+    { if(l > 9) exit(-1);
+        ;
+    }
+    else break;
+  }
+
+  listen(sock,3);
+  return(sock);
+}
+