bitkeeper revision 1.816 (405eedfdtQSsv_FQddod4l3qGl-RuA)

xencons:
  new file
Makefile, Xeno-HOWTO.txt, README.CD:
  Install an easily-accessible console terminal client program.

1 files changed, 85 insertions, 0 deletions

diff --git a/tools/misc/xencons b/tools/misc/xencons
new file mode 100755
index 0000000000..b826c89dee
--- /dev/null
+++ b/tools/misc/xencons
@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+
+##############################################
+# Console client for Xen guest OSes
+# Copyright (c) 2004, K A Fraser
+##############################################
+
+import errno, os, signal, socket, struct, sys
+
+from termios import *
+# Indexes into termios.tcgetattr() list.
+IFLAG  = 0
+OFLAG  = 1
+CFLAG  = 2
+LFLAG  = 3
+ISPEED = 4
+OSPEED = 5
+CC     = 6
+
+def __child_death(signum, frame):
+    global stop
+    stop = True
+
+def __recv_from_sock(sock):
+    global stop
+    stop = False
+    while not stop:
+        try:
+            data = sock.recv(1)
+            os.write(1, data)
+        except socket.error, error:
+            if error[0] != errno.EINTR:
+                raise
+    os.wait()
+
+def __send_to_sock(sock):
+    while 1:
+        data = os.read(0,1)
+        if ord(data[0]) == ord(']')-64:
+            break
+        try:
+            sock.send(data)
+        except socket.error, error:
+            if error[0] == errno.EPIPE:
+                sys.exit(0)
+            if error[0] != errno.EINTR:
+                raise
+    sys.exit(0)
+
+def connect(host,port):
+    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
+    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+    sock.setsockopt(socket.SOL_SOCKET, socket.SO_LINGER,
+                    struct.pack('ii', 0, 0))
+    sock.connect((host,port))
+
+    oattrs = tcgetattr(0)
+    nattrs = tcgetattr(0)
+    nattrs[IFLAG] = nattrs[IFLAG] & ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON)
+    nattrs[OFLAG] = nattrs[OFLAG] & ~(OPOST)
+    nattrs[CFLAG] = nattrs[CFLAG] & ~(CSIZE | PARENB)
+    nattrs[CFLAG] = nattrs[CFLAG] | CS8
+    nattrs[LFLAG] = nattrs[LFLAG] & ~(ECHO | ICANON | IEXTEN | ISIG)
+    nattrs[CC][VMIN] = 1
+    nattrs[CC][VTIME] = 0
+
+    if os.fork():
+        signal.signal(signal.SIGCHLD, __child_death)
+        print "************ REMOTE CONSOLE: CTRL-] TO QUIT ********"
+        tcsetattr(0, TCSAFLUSH, nattrs)
+        try:
+            __recv_from_sock(sock)
+        finally:
+            tcsetattr(0, TCSAFLUSH, oattrs)
+            print
+            print "************ REMOTE CONSOLE EXITED *****************"
+    else:
+        signal.signal(signal.SIGPIPE, signal.SIG_IGN)
+        __send_to_sock(sock)
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        print sys.argv[0] + " <host> <port>"
+        sys.exit(1)
+    connect(str(sys.argv[1]),int(sys.argv[2]))