1 files changed, 110 insertions, 0 deletions
diff --git a/seekp.c b/seekp.c
new file mode 100644
index 0000000..3890d75
--- /dev/null
+++ b/seekp.c
@@ -0,0 +1,110 @@
+/*
+    Query remote host for TCP/IP socket
+*/
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <netdb.h>
+
+#include <stdio.h>
+#include <errno.h>
+
+char	*name;
+
+int	Connect();
+
+main(argc,argv)
+int argc;
+char *argv[];
+
+{
+    int f;
+
+    name=argv[0];
+
+    if (argc<2)
+	{
+	fprintf(stderr,"%s: usage %s host\n",name,name);
+	exit(1);
+	}
+
+    setbuf(stdout,NULL);
+
+    for(f=0;f<0x10000;f++)
+	{
+	if (argc>2)
+	    printf("Trying %s:%d...\n",argv[1],f);
+
+	Connect(argv[1],f);
+
+	if ((argc==2)&&(f)&&((f%10000)==0))
+	    fprintf(stderr,"Tried up to %s:%d\n",argv[1],f);
+	}
+
+    return(0);
+}
+
+
+char *GetLine()
+
+{
+    static char buff[1024];
+    int l;
+
+    if (feof(stdin))
+	return(NULL);
+
+    printf("> ");
+
+    if (!gets(buff))
+	return(NULL);
+
+    l=strlen(buff);
+
+    if (buff[l-1]=='\n')
+	buff[l-1]=0;
+
+    if (strlen(buff))
+	return(buff);
+    else
+	return(GetLine());
+}
+
+
+int Connect(n,p)
+char *n;
+int p;
+
+{
+    static int init=0;
+    static struct hostent *remote;
+    static struct sockaddr_in addr;
+    int sock;
+
+    if (!init)
+    	{
+	if (!(remote=gethostbyname(n)))
+	    {
+	    fprintf(stderr,"%s: unknown host %s\n",name,n);
+	    exit(1);
+	    }
+
+	bcopy(remote->h_addr,&addr.sin_addr,remote->h_length);
+	init=1;
+	}
+
+    if ((sock=socket(AF_INET,SOCK_STREAM,0))==-1)
+	{
+	perror(name);
+	exit(1);
+	}
+
+    addr.sin_family=AF_INET;
+    addr.sin_port=htons(p);
+
+    if (connect(sock,&addr,sizeof(addr))!=-1)
+	printf("%s:%d\n",n,p);
+
+    close(sock);
+}