Partially revert d5fc1faf927a ... reintroduce main() interface.0.11.0

Fixes: https://todo.sr.ht/~mcepl/pygn/8

1 files changed, 114 insertions, 4 deletions

diff --git a/src/news2mail.py b/src/news2mail.py
index 33d2590..f99b0d7 100644
--- a/src/news2mail.py
+++ b/src/news2mail.py
@@ -22,8 +22,7 @@ normal (what pygs does) operations flow is:
     Date:, normal headers ending with X-* and Resent-* headers.
 
 """
-from __future__ import absolute_import
-from __future__ import print_function
+import argparse
 from collections import OrderedDict
 import email
 import email.policy
@@ -31,7 +30,7 @@ import smtplib
 from socket import gethostbyaddr, gethostname
 import sys
 import time
-from mail2news import VERSION, DESC
+import mail2news
 
 
 # logging.basicConfig(level=logging.DEBUG)
@@ -60,7 +59,8 @@ class news2mail(object):
         """add new header like X-Gateway: Received:
         """
 
-        msg['X-Gateway'] = 'pyg {0} {1}'.format(VERSION, DESC)
+        msg['X-Gateway'] = 'pyg {0} {1}'.format(mail2news.__version__,
+                                                mail2news.__description__)
 
         # to make Received: header
         t = time.ctime(time.time())
@@ -172,3 +172,113 @@ class news2mail(object):
 
         s.quit()
 
+def parse_cmdline(a_in):
+    """
+    set a dictionary with smtp new header in gw parameter (gw.smtpheads)
+    return (test,verbose) boolean tuple
+    """
+    parser = argparse.ArgumentParser(
+        description='pyg version %s - Copyright 2000 Cosimo Alfarano\n%s' %
+        (mail2news.__version__, mail2news.__description__))
+
+    parser.add_argument('-H', '--smtpserver', default='')
+    parser.add_argument('-s', '--sender', required=True, default='')
+    parser.add_argument('-e', '--envelope', default='')
+    parser.add_argument('-t', '--to', dest='rcpt', required=True)
+    parser.add_argument('-w', '--wlfile')
+    parser.add_argument('-i', '--input', default='')
+    parser.add_argument('-l', '--logfile')
+
+    parser.add_argument('-T', '--test',
+                        help='test mode (not send article via SMTP)',
+                        action='store_true')
+    parser.add_argument('-v', '--verbose', help='verbose output',
+                        action='store_true')
+
+    opts = parser.parse_args(a_in)
+
+#  By rfc822 [Resent-]Sender: should be ever set, unless == From:
+# (not this case). Should be a human, while [Resent-]From: may be a program.
+
+    if opts.rcpt == '' or opts.sender == '':
+        raise argparse.ArgumentError('missing command line option')
+
+    if opts.envelope == '' and opts.sender != '':
+        opts.envelope = opts.sender
+
+    return opts
+
+def main(args_in=None):
+    """main is structured in 4 phases:
+        1) check and set pyg's internal variables
+        2) check whitelist for users' permission
+        3) format rfc 822 headers from input article
+        4) open smtp connection and send e-mail
+    """
+
+    """phase 1:
+    check and set pyg's internal variables
+    """
+    out = ''
+
+    # it returns only test, other parms are set directly in the actual
+    # parameter
+    if args_in is None:
+        args_in = sys.argv[1:]
+    args = parse_cmdline(args_in)
+
+    n2m = news2mail(args)
+    owner = None
+
+    # check if n2m has some file prefercences set on commandline
+    if args.wlfile is None:
+        wl = os.path.expanduser(os.path.join(os.path.dirname(__file__), 'pyg.whitelist'))
+    else:
+        wl = args.wlfile
+
+    if args.logfile is None:
+        log = os.path.expanduser(os.path.join(os.path.dirname(__file__), 'pyg.log'))
+    else:
+        log = args.logfile
+
+    wl = whitelist.whitelist(wl, log)
+
+    """phase 2:
+    check whitelist for user's permission
+    """
+
+    # make a first check of From: address
+    owner = wl.checkfrom(n2m.message['From'])
+    if owner is None:
+        if sys.stdin.isatty() == 1 or args.test:
+            out += str('"%s" is not in whitelist!' % (n2m.message['From'][:-1])) + '\n'
+        else:
+            wl.logmsg(n2m.nntpheads, wl.DENY)
+
+        # if verbose, I want to print out headers, so I can't
+        # exit now.
+        if not args.verbose:
+            sys.exit(1)
+
+    # Reformat the message
+    n2m.process_message()
+
+    # prints formatted email message only (without send) if user wants
+    if args.verbose:
+        out += n2m.message.as_string() + '\n'
+
+    if owner is None:
+        sys.exit(1)
+
+    """phase 4:
+    open smtp connection and send e-mail
+    """
+
+    wl.logmsg(n2m.heads_dict, wl.ACCEPT, owner)
+    if not args.test:
+        n2m.sendarticle()
+
+    if args.input == '':
+        print(out)
+    else:
+        return out