view tests/dummysmtpd.py @ 51316:178e50edb4f8

changelog: stop useless enforcing split at the end of transaction

Changelogs are no longer created inline, and existing changelogs are
automatically split. Since we now enforce splitting at the start of any write,
we don't need to enforce splitting at the end of the transaction.

This has the nice side effect of killing the only user of "side_write".

#!/usr/bin/env python

"""dummy SMTP server for use in tests"""


import optparse
import os
import socket
import ssl
import sys

from mercurial import (
    pycompat,
    server,
    sslutil,
    ui as uimod,
)


if os.environ.get('HGIPV6', '0') == '1':
    family = socket.AF_INET6
else:
    family = socket.AF_INET


def log(msg):
    sys.stdout.write(msg)
    sys.stdout.flush()


def mocksmtpserversession(conn, addr):
    conn.send(b'220 smtp.example.com ESMTP\r\n')

    line = conn.recv(1024)
    if not line.lower().startswith(b'ehlo '):
        log('no hello: %s\n' % line)
        return

    conn.send(b'250 Hello\r\n')

    line = conn.recv(1024)
    if not line.lower().startswith(b'mail from:'):
        log('no mail from: %s\n' % line)
        return
    mailfrom = line[10:].decode().rstrip()
    if mailfrom.startswith('<') and mailfrom.endswith('>'):
        mailfrom = mailfrom[1:-1]

    conn.send(b'250 Ok\r\n')

    rcpttos = []
    while True:
        line = conn.recv(1024)
        if not line.lower().startswith(b'rcpt to:'):
            break
        rcptto = line[8:].decode().rstrip()
        if rcptto.startswith('<') and rcptto.endswith('>'):
            rcptto = rcptto[1:-1]
        rcpttos.append(rcptto)

        conn.send(b'250 Ok\r\n')

    if not line.lower().strip() == b'data':
        log('no rcpt to or data: %s' % line)

    conn.send(b'354 Go ahead\r\n')

    data = b''
    while True:
        line = conn.recv(1024)
        if not line:
            log('connection closed before end of data')
            break
        data += line
        if data.endswith(b'\r\n.\r\n'):
            data = data[:-5]
            break

    conn.send(b'250 Ok\r\n')

    log(
        '%s from=%s to=%s\n%s\n'
        % (addr[0], mailfrom, ', '.join(rcpttos), data.decode())
    )


def run(host, port, certificate):
    ui = uimod.ui.load()
    with socket.socket(family, socket.SOCK_STREAM) as s:
        s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        s.bind((host, port))
        # log('listening at %s:%d\n' % (host, port))
        s.listen(1)
        try:
            while True:
                conn, addr = s.accept()
                if certificate:
                    try:
                        conn = sslutil.wrapserversocket(
                            conn, ui, certfile=certificate
                        )
                    except ssl.SSLError as e:
                        log('%s ssl error: %s\n' % (addr[0], e))
                        conn.close()
                        continue
                log("connection from %s:%s\n" % addr)
                mocksmtpserversession(conn, addr)
                conn.close()
        except KeyboardInterrupt:
            pass


def _encodestrsonly(v):
    if isinstance(v, type(u'')):
        return v.encode('ascii')
    return v


def bytesvars(obj):
    unidict = vars(obj)
    bd = {k.encode('ascii'): _encodestrsonly(v) for k, v in unidict.items()}
    if bd[b'daemon_postexec'] is not None:
        bd[b'daemon_postexec'] = [
            _encodestrsonly(v) for v in bd[b'daemon_postexec']
        ]
    return bd


def main():
    op = optparse.OptionParser()
    op.add_option('-d', '--daemon', action='store_true')
    op.add_option('--daemon-postexec', action='append')
    op.add_option('-p', '--port', type=int, default=8025)
    op.add_option('-a', '--address', default='localhost')
    op.add_option('--pid-file', metavar='FILE')
    op.add_option('--tls', choices=['none', 'smtps'], default='none')
    op.add_option('--certificate', metavar='FILE')
    op.add_option('--logfile', metavar='FILE')

    opts, args = op.parse_args()
    if (opts.tls == 'smtps') != bool(opts.certificate):
        op.error('--certificate must be specified with --tls=smtps')

    server.runservice(
        bytesvars(opts),
        runfn=lambda: run(opts.address, opts.port, opts.certificate),
        runargs=[pycompat.sysexecutable, pycompat.fsencode(__file__)]
        + pycompat.sysargv[1:],
        logfile=opts.logfile,
    )


if __name__ == '__main__':
    main()