From: Mark Wooding <mdw@distorted.org.uk>
Date: Mon, 23 Apr 2012 17:11:11 +0000 (+0100)
Subject: contrib/greet.in: Grotty script to send a TrIPE greeting packet.
X-Git-Tag: 1.0.0pre11~14
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/tripe/commitdiff_plain/5d60949f7d6a88e88d4d962d093b0ae1a4df5096

contrib/greet.in: Grotty script to send a TrIPE greeting packet.

Useful for testing.
---

diff --git a/contrib/Makefile.am b/contrib/Makefile.am
index 8802b62a..a81e14a8 100644
--- a/contrib/Makefile.am
+++ b/contrib/Makefile.am
@@ -26,6 +26,7 @@
 include $(top_srcdir)/vars.am
 
 noinst_DATA		 =
+noinst_SCRIPTS		 =
 
 ###--------------------------------------------------------------------------
 ### Contributions.
@@ -52,4 +53,15 @@ tripe-upstart: tripe-upstart.in Makefile
 	$(SUBST) $(srcdir)/tripe-upstart.in >$@.new $(SUBSTITUTIONS) && \
 		mv $@.new $@
 
+## `greet' utility for stimulating passive connections.
+if HAVE_PYTHON
+noinst_SCRIPTS		+= greet
+EXTRA_DIST		+= greet.in
+CLEANFILES		+= greet
+
+greet: greet.in Makefile
+	$(SUBST) $(srcdir)/greet.in >$@.new $(SUBSTITUTIONS) && \
+		chmod +x $@.new && mv $@.new $@
+endif
+
 ###----- That's all, folks --------------------------------------------------
diff --git a/contrib/greet.in b/contrib/greet.in
new file mode 100644
index 00000000..c84efdcb
--- /dev/null
+++ b/contrib/greet.in
@@ -0,0 +1,17 @@
+#! @PYTHON@
+### greet HOST PORT CHALLENGE
+### Sends a TrIPE greeting packet to the server listening on HOST and PORT.
+### The payload is the base64-encoded CHALLENGE.
+
+import socket as S
+from sys import argv
+
+def db64(s):
+  return (s + '='*((-len(s))%4)).decode('base64')
+
+addr, chal = (lambda _, h, p, c: ((h, int(p)), db64(c)))(*argv)
+sk = S.socket(S.AF_INET, S.SOCK_DGRAM)
+sk.connect(addr)
+
+pkt = '\x25' + chal
+sk.send(pkt)
diff --git a/debian/rules b/debian/rules
index 3738102a..ad785081 100755
--- a/debian/rules
+++ b/debian/rules
@@ -41,7 +41,7 @@ install/tripe::
 	sed 's/^#\(user\|group\)/\1/' \
 		$(DEB_SRCDIR)/init/tripe.conf >debian/tripe.default
 	mkdir -p debian/tripe/usr/share/doc/tripe/examples
-	for i in tripe-ipif ipif-peers tripe-upstart; do \
+	for i in tripe-ipif ipif-peers tripe-upstart greet; do \
 	  cp $(DEB_BUILDDIR)/contrib/$$i \
 		debian/tripe/usr/share/doc/tripe/examples; \
 	done