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feat: issue2551068 - Provide way to retrieve file/msg data via rest endpoint. Use Allow header to change format of /binary_content endpoint. If Allow header for endpoint is not application/json, it will be matched against the mime type for the file. */*, text/* are supported and will return the native mime type if present. Changes: move */* mime type from static dict of supported types. It was hardcoded to return json only. Now it can return a matching non-json mime type for the /binary_content endpoint. Edited some errors to explicitly add */* mime type. Cleanups to use ', ' separation in lists of valid mime types rather than just space separated. Remove ETag header when sending raw content. See issue 2551375 for background. Doc added to rest.txt. Small format fix up (add dash) in CHANGES.txt. Make passing an unset/None/False accept_mime_type to format_dispatch_output a 500 error. This used to be the fallback to produce a 406 error after all processing had happened. It should no longer be possible to take that code path as all 406 errors (with valid accept_mime_types) are generated before processing takes place. Make format_dispatch_output handle output other than json/xml so it can send back binary_content data. Removed a spurious client.response_code = 400 that seems to not be used. Tests added for all code paths. Database setup for tests msg and file entry. This required a file upload test to change so it doesn't look for file1 as the link returned by the upload. Download the link and verify the data rather than verifying the link. Multiple formatting changes to error messages to make all lists of valid mime types ', ' an not just space separated.
author John Rouillard <rouilj@ieee.org>
date Sun, 08 Dec 2024 17:22:33 -0500
parents f8893e1cde0d
children
line wrap: on
line source

#
# Copyright (c) 2001 Bizar Software Pty Ltd (http://www.bizarsoftware.com.au/)
# This module is free software, and you may redistribute it and/or modify
# under the same terms as Python, so long as this copyright message and
# disclaimer are retained in their original form.
#
# IN NO EVENT SHALL BIZAR SOFTWARE PTY LTD BE LIABLE TO ANY PARTY FOR
# DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING
# OUT OF THE USE OF THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# BIZAR SOFTWARE PTY LTD SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
# BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE.  THE CODE PROVIDED HEREUNDER IS ON AN "AS IS"
# BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
# SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

import email
import unittest
from roundup.anypy.strings import StringIO

from roundup.mailgw import RoundupMessage

def gen_message(spec):
    """Create a basic MIME message according to 'spec'.

    Each line of a spec has one content-type, which is optionally indented.
    The indentation signifies how deep in the MIME hierarchy the
    content-type is.

    """

    def getIndent(line):
        """Get the current line's indentation, using four-space indents."""
        count = 0
        for char in line:
            if char != ' ':
                break
            count += 1
        return count // 4

    # A note on message/rfc822: The content of such an attachment is an
    # email with at least one header line. RFC2046 tells us: """   A
    # media type of "message/rfc822" indicates that the body contains an
    # encapsulated message, with the syntax of an RFC 822 message.
    # However, unlike top-level RFC 822 messages, the restriction that
    # each "message/rfc822" body must include a "From", "Date", and at
    # least one destination header is removed and replaced with the
    # requirement that at least one of "From", "Subject", or "Date" must
    # be present."""
    # This means we have to add a newline after the mime-header before
    # the subject, otherwise the subject is part of the mime header not
    # part of the email header.
    table = {'multipart/signed': '    boundary="boundary-%(indent)s";\n',
             'multipart/mixed': '    boundary="boundary-%(indent)s";\n',
             'multipart/alternative': '    boundary="boundary-%(indent)s";\n',
             'text/plain': '    name="foo.txt"\nfoo\n',
             'text/html': '    name="bar.html"\n<html><body>bar &gt;</body></html>\n',
             'application/pgp-signature': '    name="foo.gpg"\nfoo\n',
             'application/pdf': '    name="foo.pdf"\nfoo\n',
             'message/rfc822': '\nSubject: foo\n\nfoo\n'}

    parts = []
    for line in spec.splitlines():
        content_type = line.strip()
        if not content_type:
            continue

        indent = getIndent(line)
        if indent:
            parts.append('\n--boundary-%s\n' % indent)
        parts.append('Content-type: %s;\n' % content_type)
        parts.append(table[content_type] % {'indent': indent + 1})

    for i in range(indent, 0, -1):
        parts.append('\n--boundary-%s--\n' % i)

    return email.message_from_file(StringIO(''.join(parts)), RoundupMessage)

class MultipartTestCase(unittest.TestCase):
    def setUp(self):
        self.fp = StringIO()
        w = self.fp.write
        w('Content-Type: multipart/mixed; boundary="foo"\r\n\r\n')
        w('This is a multipart message. Ignore this bit.\r\n')
        w('\r\n--foo\r\n')

        w('Content-Type: text/plain\r\n\r\n')
        w('Hello, world!\r\n')
        w('\r\n')
        w('Blah blah\r\n')
        w('foo\r\n')
        w('-foo\r\n')
        w('\r\n--foo\r\n')

        w('Content-Type: multipart/alternative; boundary="bar"\r\n\r\n')
        w('This is a multipart message. Ignore this bit.\r\n')
        w('\r\n--bar\r\n')

        w('Content-Type: text/plain\r\n\r\n')
        w('Hello, world!\r\n')
        w('\r\n')
        w('Blah blah\r\n')
        w('\r\n--bar\r\n')

        w('Content-Type: text/html\r\n\r\n')
        w('<b>Hello, world!</b>\r\n')
        w('\r\n--bar--\r\n')
        w('\r\n--foo\r\n')

        w('Content-Type: text/plain\r\n\r\n')
        w('Last bit\n')
        w('\r\n--foo--\r\n')
        self.fp.seek(0)

    def testMultipart(self):
        m = email.message_from_file(self.fp, RoundupMessage)
        self.assertTrue(m is not None)

        it = iter(m.get_payload())

        # first text/plain
        p = next(it, None)
        self.assertTrue(p is not None)
        self.assertEqual(p.get_content_type(), 'text/plain')
        self.assertEqual(p.get_payload(),
            'Hello, world!\r\n\r\nBlah blah\r\nfoo\r\n-foo\r\n')

        # sub-multipart
        p = next(it, None)
        self.assertTrue(p is not None)
        self.assertEqual(p.get_content_type(), 'multipart/alternative')

        # sub-multipart text/plain
        qit = iter(p.get_payload())
        q = next(qit, None)
        self.assertTrue(q is not None)
        self.assertEqual(q.get_content_type(), 'text/plain')
        self.assertEqual(q.get_payload(), 'Hello, world!\r\n\r\nBlah blah\r\n')

        # sub-multipart text/html
        q = next(qit, None)
        self.assertTrue(q is not None)
        self.assertEqual(q.get_content_type(), 'text/html')
        self.assertEqual(q.get_payload(), '<b>Hello, world!</b>\r\n')

        # sub-multipart end
        q = next(qit, None)
        self.assertTrue(q is None)

        # final text/plain
        p = next(it, None)
        self.assertTrue(p is not None)
        self.assertEqual(p.get_content_type(), 'text/plain')
        self.assertEqual(p.get_payload(),
            'Last bit\n')

        # end
        p = next(it, None)
        self.assertTrue(p is None)

    def TestExtraction(self, spec, expected, convert_html_with=False):
        if convert_html_with:
            from roundup.dehtml import dehtml
            html2text=dehtml(convert_html_with).html2text
        else:
            html2text=None

        self.assertEqual(gen_message(spec).extract_content(
            html2text=html2text), expected)

    def testTextPlain(self):
        self.TestExtraction('text/plain', ('foo\n', [], False))

    def testAttachedTextPlain(self):
        self.TestExtraction("""
multipart/mixed
    text/plain
    text/plain""",
                  ('foo\n',
                   [('foo.txt', 'text/plain', 'foo\n')], False))

    def testMultipartMixed(self):
        self.TestExtraction("""
multipart/mixed
    text/plain
    application/pdf""",
                  ('foo\n',
                   [('foo.pdf', 'application/pdf', b'foo\n')], False))

    def testMultipartMixedHtml(self):
        # test with html conversion enabled
        self.TestExtraction("""
multipart/mixed
    text/html
    application/pdf""",
                  ('bar >\n',
                   [('bar.html', 'text/html',
                      '<html><body>bar &gt;</body></html>\n'),
                   ('foo.pdf', 'application/pdf', b'foo\n')], False),
                            convert_html_with='dehtml')

        # test with html conversion disabled
        self.TestExtraction("""
multipart/mixed
    text/html
    application/pdf""",
                  (None,
                   [('bar.html', 'text/html',
                      '<html><body>bar &gt;</body></html>\n'),
                    ('foo.pdf', 'application/pdf', b'foo\n')], False),
                            convert_html_with=False)

    def testMultipartAlternative(self):
        self.TestExtraction("""
multipart/alternative
    text/plain
    application/pdf
        """, ('foo\n', [('foo.pdf', 'application/pdf', b'foo\n')], False))

    def testMultipartAlternativeHtml(self):
        self.TestExtraction("""
multipart/alternative
    text/html
    application/pdf""",
                  ('bar >\n',
                   [('bar.html', 'text/html',
                      '<html><body>bar &gt;</body></html>\n'),
                   ('foo.pdf', 'application/pdf', b'foo\n')], False),
                            convert_html_with='dehtml')

        self.TestExtraction("""
multipart/alternative
    text/html
    application/pdf""",
                  (None,
                   [('bar.html', 'text/html',
                      '<html><body>bar &gt;</body></html>\n'),
                    ('foo.pdf', 'application/pdf', b'foo\n')], False),
                            convert_html_with=False)

    def testMultipartAlternativeHtmlText(self):
        # text should take priority over html when html is first
        self.TestExtraction("""
multipart/alternative
    text/html
    text/plain
    application/pdf""",
                  ('foo\n',
                   [('bar.html', 'text/html',
                      '<html><body>bar &gt;</body></html>\n'),
                    ('foo.pdf', 'application/pdf', b'foo\n')], False),
                            convert_html_with='dehtml')

        # text should take priority over html when text is first
        self.TestExtraction("""
multipart/alternative
    text/plain
    text/html
    application/pdf""",
                  ('foo\n',
                   [('bar.html', 'text/html',
                      '<html><body>bar &gt;</body></html>\n'),
                    ('foo.pdf', 'application/pdf', b'foo\n')], False),
                            convert_html_with='dehtml')

        # text should take priority over html when text is second and
        # html is disabled
        self.TestExtraction("""
multipart/alternative
    text/html
    text/plain
    application/pdf""",
                  ('foo\n',
                   [('bar.html', 'text/html',
                      '<html><body>bar &gt;</body></html>\n'),
                    ('foo.pdf', 'application/pdf', b'foo\n')], False),
                            convert_html_with=False)

        # text should take priority over html when text is first and
        # html is disabled
        self.TestExtraction("""
multipart/alternative
    text/plain
    text/html
    application/pdf""",
                  ('foo\n',
                   [('bar.html', 'text/html',
                      '<html><body>bar &gt;</body></html>\n'),
                    ('foo.pdf', 'application/pdf', b'foo\n')], False),
                            convert_html_with=False)

    def testDeepMultipartAlternative(self):
        self.TestExtraction("""
multipart/mixed
    multipart/alternative
        text/plain
        application/pdf
        """, ('foo\n', [('foo.pdf', 'application/pdf', b'foo\n')], False))

    def testSignedText(self):
        self.TestExtraction("""
multipart/signed
    text/plain
    application/pgp-signature""", ('foo\n', [], False))

    def testSignedAttachments(self):
        self.TestExtraction("""
multipart/signed
    multipart/mixed
        text/plain
        application/pdf
    application/pgp-signature""",
                  ('foo\n',
                   [('foo.pdf', 'application/pdf', b'foo\n')], False))

    def testAttachedSignature(self):
        self.TestExtraction("""
multipart/mixed
    text/plain
    application/pgp-signature""",
                  ('foo\n',
                   [('foo.gpg', 'application/pgp-signature', b'foo\n')], False))

    def testMessageRfc822(self):
        self.TestExtraction("""
multipart/mixed
    message/rfc822""",
                  (None,
                   [('foo.eml', 'message/rfc822', 'Subject: foo\n\nfoo\n')], False))

# vim: set filetype=python ts=4 sw=4 et si
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