From e9133ed025208f57e33bddf7b1873d8f9ddf980b Mon Sep 17 00:00:00 2001
From: Isis Lovecruft <isis@torproject.org>
Date: Mon, 28 Jan 2013 18:03:47 +0000
Subject: Added main file for starting the remailer, still need to finish
 check_recipient, added logging functionality, and config is halfway done, but
 it will need to use JSON rather than Yaml.

---
 src/leap/mx.py | 154 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100755 src/leap/mx.py

diff --git a/src/leap/mx.py b/src/leap/mx.py
new file mode 100755
index 0000000..60968bc
--- /dev/null
+++ b/src/leap/mx.py
@@ -0,0 +1,154 @@
+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+"""
+   ____
+  | mx |
+  |____|_______________________
+     |                         |
+     | An encrypting remailer. |
+     |_________________________|
+
+@author Isis Agora Lovecruft <isis@leap.se>, 0x2cdb8b35
+@version 0.0.1
+
+"""
+
+import os, sys
+
+
+application_name = "leap_mx"
+
+def __get_repo_dir__():
+    """Get the absolute path of the top-level repository directory."""
+    here = os.getcwd()
+    base = here.rsplit(application_name, 1)[0]
+    repo = os.path.join(base, application_name)
+    return repo
+
+## Set the $PYTHONPATH:
+src_dir = os.path.join(__get_repo_dir__(), 'src/')
+sys.path[:] = map(os.path.abspath, sys.path)
+sys.path.insert(0, src_dir)
+
+## Now we should be able to import ourselves without installation:
+try:
+    from mx   import runner
+    from util import log, version
+except ImportError, ie:
+    print "%s\nExiting..." % ie.message
+    sys.exit(1)
+
+
+class CheckRequirements(ImportError):
+    """
+    Raised when we're missing something from requirements.pip.
+    """
+    def __init__(self, message=None, missing=None, pipfile=None):
+        """
+        Display an error message with instructions for obtaining missing
+        dependencies.
+
+        @param message: A string describing the error.
+        @param missing: A string indicating which dependency is missing.
+        @param pipfile: The path and filename of the pip requirements file,
+            relative to the top-level repository directory.
+        """
+        if message:
+            self.message = message
+            return self
+
+        self.pipfile = pipfile
+
+        if isinstance(missing, str):
+            missing = [missing]
+        else:
+            missing = []
+            dependencies = self.__read_pip_requirements__()
+            for package, version in dependencies:
+                pkg = package.lower() if package == "Twisted" else package
+                try:
+                    __import__(pkg)
+                except ImportError:
+                    missing.append(package)
+
+        self.message = application_name + " requires "
+        if len(missing) > 1:
+            for missed in missing[:-1]:
+                self.message += missed + ", "
+            self.message += "and "
+        if len(missing) == 1:
+            self.message += missing[0] + "."
+            self.message += "\nPlease see %s for ".format(pipfile)
+            self.message += "instruction on installing dependencies."
+            raise self
+        elif len(missing) <= 0:
+            return
+
+    def __read_pip_requirements__(self, file=None):
+        """
+        Check the pip requirements file to determine our dependencies.
+
+        @param file: The name of the pip requirements.txt file.
+        @returns: A list of tuple(package_name, package_version).
+        """
+        import re
+
+        if not file:
+            file = self.pipfile
+
+        filepath     = os.path.join(__get_repo_dir__(), file)
+        requirement  = re.compile('[^0-9=><]+')
+        dependencies = []
+
+        print filepath
+        assert os.path.isfile(filepath), \
+            "Couldn't find requirements.pip file!"
+
+        with open(filepath) as pipfile:
+            for line in pipfile.readlines():
+                shortened       = line.strip()
+                matched         = requirement.match(shortened)
+                package_name    = matched.group()
+                package_version = shortened.split(package_name, 1)[1]
+                dependencies.append((package_name, package_version))
+
+        return dependencies
+
+dependency_check = CheckRequirements(pipfile='pkg/mx-requirements.pip')
+
+try:
+    from twisted.python   import usage, runtime
+    from twisted.internet import reactor
+except:
+    print "the CheckRequirements class is broken!"
+
+
+if __name__ == "__main__":
+
+    log.start()
+    log.debug("Running %s, with Python %s" % (application_name,
+                                              runtime.shortPythonVersion()))
+    log.debug("Platform: %s" % runtime.platform.getType())
+    log.debug("Thread support: %s" % str(runtime.platform.supportsThreads()))
+
+    mx_options = MXOptions()
+    mx_options.parseOptions(sys.argv)
+
+    if len(sys.argv) <= 0:
+        print mx_options.getUsage()
+        sys.exit(0)
+    else:
+        options = mx_options
+
+    if options['verbose']:
+        config.basic.debug = True
+
+    if options['test']:
+        from leap.mx import tests ## xxx this needs an __init__.py
+        tests.run()               ## xxx need /leap/mx/tests.py
+    elif options['conf'] and os.path.isfile(options['conf']):
+        config.parse() ## xxx need /leap/mx/config.py 
+        runner.run()   ## xxx need /leap/mx/runner.py
+    else:
+        mx_options.getUsage()
+        sys.exit(1)
-- 
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