cholerab knut: initial commit

5 files changed, 110 insertions, 0 deletions

diff --git a/cholerab/knut/index.js b/cholerab/knut/index.js
new file mode 100755
index 00000000..e7278678
--- /dev/null
+++ b/cholerab/knut/index.js
@@ -0,0 +1,63 @@
+#! /usr/bin/env node
+
+var host = '0.0.0.0';
+var port = 42101;
+
+var pipe = '/tmp/krebscode.painload.cholerab.ttycnser.' + process.env.LOGNAME;
+
+var fs = require('fs');
+var http = require('http');
+var slurp = require('./src/io/slurp');
+var spawn = require('child_process').spawn;
+
+var plugs = process.argv.slice(2);
+
+http.createServer(function (req, res) {
+  return slurp(req, function (data) {
+    try {
+      var message = JSON.parse(data);
+    } catch (exn) {
+      console.error(exn.stack);
+    };
+    if (message) {
+      plugs.forEach(function (plug) {
+
+        var env = JSON.parse(JSON.stringify(process.env));
+        Object.keys(message).forEach(function (key) {
+          env[key] = message[key];
+        });
+
+        var child = spawn(__dirname + '/plugs/' + plug + '/index', [], {
+          env: env
+        });
+
+        child.stdout.on('data', function (data) {
+          console.log(plug, 'stdout:', data.toString());
+        });
+
+        child.stderr.on('data', function (data) {
+          console.log(plug, 'stderr:', data.toString());
+        });
+
+        child.on('exit', function (code) {
+          console.log(plug, 'exit:', code);
+          if (code === 0) {
+            res.writeHead(200, { 'Content-Length': 0 });
+            res.end();
+          } else {
+            res.writeHead(500, { 'Content-Length': 0 });
+            res.end();
+          };
+        });
+
+      });
+    } else {
+      res.writeHead(400, 'You are made of stupid!', {
+        'Content-Length': 0
+      });
+      res.end();
+    };
+  });
+}).listen(port, host, function () {
+  console.log('Serving HTTP on', host, 'port', port);
+});
diff --git a/cholerab/knut/plugs/ttycnser/bin/login b/cholerab/knut/plugs/ttycnser/bin/login
new file mode 100755
index 00000000..bf88d6f9
--- /dev/null
+++ b/cholerab/knut/plugs/ttycnser/bin/login
@@ -0,0 +1,4 @@
+#! /bin/sh
+set -euf
+pipe="/tmp/krebscode.painload.cholerab.ttycnser.${LOGNAME}"
+ln -snf "`tty`" "$pipe"
diff --git a/cholerab/knut/plugs/ttycnser/bin/write b/cholerab/knut/plugs/ttycnser/bin/write
new file mode 100755
index 00000000..f358407a
--- /dev/null
+++ b/cholerab/knut/plugs/ttycnser/bin/write
@@ -0,0 +1,4 @@
+#! /bin/sh
+set -euf
+pipe="/tmp/krebscode.painload.cholerab.ttycnser.${LOGNAME}"
+echo -n "7>>>> ${params}8" > "${pipe}"
diff --git a/cholerab/knut/plugs/ttycnser/index b/cholerab/knut/plugs/ttycnser/index
new file mode 120000
index 00000000..2d949688
--- /dev/null
+++ b/cholerab/knut/plugs/ttycnser/index
@@ -0,0 +1 @@
+bin/write
\ No newline at end of file
diff --git a/cholerab/knut/src/io/slurp.js b/cholerab/knut/src/io/slurp.js
new file mode 100644
index 00000000..70319743
--- /dev/null
+++ b/cholerab/knut/src/io/slurp.js
@@ -0,0 +1,38 @@
+module.exports = (function () {
+
+  function join_buffers (buffers, length) {
+    var buffer = new Buffer(length);
+    var targetStart = 0;
+    buffers.forEach(function (x) {
+      x.copy(buffer, targetStart);
+      targetStart += x.length;
+    });
+    return buffer;
+  };
+
+  function finish_it (req, buffers, length, callback) {
+    req.content = join_buffers(buffers, length);
+    return callback(req.content);
+  };
+
+  function nop () {};
+
+  return function (req, callback) {
+    if (req.hasOwnProperty('content')) {
+      return callback(req.content);
+    };
+    var content = [];
+    var length = 0;
+    var end_handler = finish_it;
+    req.on('data', function (data) {
+      content.push(data);
+      length += data.length;
+    });
+    [ 'end', 'close' ].forEach(function (event) {
+      req.on(event, function () {
+        finish_it(req, content, length, callback);
+        end_handler = nop;
+      });
+    });
+  };
+})();