debian/changelog: Annotate with bugs being closed.

[youtubedl] / youtube_dl / utils.py

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 942f76d2452c06a261d75e03cebc999fff02874c..6978a10e4cfa9b89874f5ec1da15c30a3e6d7e99 100644 (file)
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -3,6 +3,8 @@
 
 from __future__ import unicode_literals
 
 
 from __future__ import unicode_literals
 

+import base64
+import binascii

 import calendar
 import codecs
 import contextlib
 import calendar
 import codecs
 import contextlib


@@ -35,6 +37,7 @@ import zlib
 from .compat import (
     compat_basestring,
     compat_chr,
 from .compat import (
     compat_basestring,
     compat_chr,

+    compat_etree_fromstring,

     compat_html_entities,
     compat_http_client,
     compat_kwargs,
     compat_html_entities,
     compat_http_client,
     compat_kwargs,


@@ -54,7 +57,7 @@ from .compat import (
 compiled_regex_type = type(re.compile(''))
 
 std_headers = {
 compiled_regex_type = type(re.compile(''))
 
 std_headers = {

-    'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20150101 Firefox/20.0 (Chrome)',
+    'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20150101 Firefox/44.0 (Chrome)',

     'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
     'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
     'Accept-Encoding': 'gzip, deflate',
     'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
     'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
     'Accept-Encoding': 'gzip, deflate',


@@ -68,6 +71,21 @@ ENGLISH_MONTH_NAMES = [
     'January', 'February', 'March', 'April', 'May', 'June',
     'July', 'August', 'September', 'October', 'November', 'December']
 
     'January', 'February', 'March', 'April', 'May', 'June',
     'July', 'August', 'September', 'October', 'November', 'December']
 

+KNOWN_EXTENSIONS = (
+    'mp4', 'm4a', 'm4p', 'm4b', 'm4r', 'm4v', 'aac',
+    'flv', 'f4v', 'f4a', 'f4b',
+    'webm', 'ogg', 'ogv', 'oga', 'ogx', 'spx', 'opus',
+    'mkv', 'mka', 'mk3d',
+    'avi', 'divx',
+    'mov',
+    'asf', 'wmv', 'wma',
+    '3gp', '3g2',
+    'mp3',
+    'flac',
+    'ape',
+    'wav',
+    'f4f', 'f4m', 'm3u8', 'smil')
+

 
 def preferredencoding():
     """Get preferred encoding.
 
 def preferredencoding():
     """Get preferred encoding.


@@ -139,21 +157,24 @@ def write_json_file(obj, fn):
 
 
 if sys.version_info >= (2, 7):
 
 
 if sys.version_info >= (2, 7):

-    def find_xpath_attr(node, xpath, key, val):
+    def find_xpath_attr(node, xpath, key, val=None):

         """ Find the xpath xpath[@key=val] """
         """ Find the xpath xpath[@key=val] """

-        assert re.match(r'^[a-zA-Z-]+$', key)
-        assert re.match(r'^[a-zA-Z0-9@\s:._-]*$', val)
-        expr = xpath + "[@%s='%s']" % (key, val)
+        assert re.match(r'^[a-zA-Z_-]+$', key)
+        if val:
+            assert re.match(r'^[a-zA-Z0-9@\s:._-]*$', val)
+        expr = xpath + ('[@%s]' % key if val is None else "[@%s='%s']" % (key, val))

         return node.find(expr)
 else:
         return node.find(expr)
 else:

-    def find_xpath_attr(node, xpath, key, val):
+    def find_xpath_attr(node, xpath, key, val=None):

         # Here comes the crazy part: In 2.6, if the xpath is a unicode,
         # .//node does not match if a node is a direct child of . !
         if isinstance(xpath, compat_str):
             xpath = xpath.encode('ascii')
 
         for f in node.findall(xpath):
         # Here comes the crazy part: In 2.6, if the xpath is a unicode,
         # .//node does not match if a node is a direct child of . !
         if isinstance(xpath, compat_str):
             xpath = xpath.encode('ascii')
 
         for f in node.findall(xpath):

-            if f.attrib.get(key) == val:
+            if key not in f.attrib:
+                continue
+            if val is None or f.attrib.get(key) == val:

                 return f
         return None
 
                 return f
         return None
 


@@ -173,12 +194,21 @@ def xpath_with_ns(path, ns_map):
     return '/'.join(replaced)
 
 
     return '/'.join(replaced)
 
 

-def xpath_text(node, xpath, name=None, fatal=False, default=NO_DEFAULT):
-    if sys.version_info < (2, 7):  # Crazy 2.6
-        xpath = xpath.encode('ascii')
+def xpath_element(node, xpath, name=None, fatal=False, default=NO_DEFAULT):
+    def _find_xpath(xpath):
+        if sys.version_info < (2, 7):  # Crazy 2.6
+            xpath = xpath.encode('ascii')
+        return node.find(xpath)

 
 

-    n = node.find(xpath)
-    if n is None or n.text is None:
+    if isinstance(xpath, (str, compat_str)):
+        n = _find_xpath(xpath)
+    else:
+        for xp in xpath:
+            n = _find_xpath(xp)
+            if n is not None:
+                break
+
+    if n is None:

         if default is not NO_DEFAULT:
             return default
         elif fatal:
         if default is not NO_DEFAULT:
             return default
         elif fatal:


@@ -186,12 +216,40 @@ def xpath_text(node, xpath, name=None, fatal=False, default=NO_DEFAULT):
             raise ExtractorError('Could not find XML element %s' % name)
         else:
             return None
             raise ExtractorError('Could not find XML element %s' % name)
         else:
             return None

+    return n
+
+
+def xpath_text(node, xpath, name=None, fatal=False, default=NO_DEFAULT):
+    n = xpath_element(node, xpath, name, fatal=fatal, default=default)
+    if n is None or n == default:
+        return n
+    if n.text is None:
+        if default is not NO_DEFAULT:
+            return default
+        elif fatal:
+            name = xpath if name is None else name
+            raise ExtractorError('Could not find XML element\'s text %s' % name)
+        else:
+            return None

     return n.text
 
 
     return n.text
 
 

+def xpath_attr(node, xpath, key, name=None, fatal=False, default=NO_DEFAULT):
+    n = find_xpath_attr(node, xpath, key)
+    if n is None:
+        if default is not NO_DEFAULT:
+            return default
+        elif fatal:
+            name = '%s[@%s]' % (xpath, key) if name is None else name
+            raise ExtractorError('Could not find XML attribute %s' % name)
+        else:
+            return None
+    return n.attrib[key]
+
+

 def get_element_by_id(id, html):
     """Return the content of the tag with the specified ID in the passed HTML document"""
 def get_element_by_id(id, html):
     """Return the content of the tag with the specified ID in the passed HTML document"""

-    return get_element_by_attribute("id", id, html)
+    return get_element_by_attribute('id', id, html)

 
 
 def get_element_by_attribute(attribute, value, html):
 
 
 def get_element_by_attribute(attribute, value, html):


@@ -324,13 +382,20 @@ def sanitize_path(s):
     if drive_or_unc:
         norm_path.pop(0)
     sanitized_path = [
     if drive_or_unc:
         norm_path.pop(0)
     sanitized_path = [

-        path_part if path_part in ['.', '..'] else re.sub('(?:[/<>:"\\|\\\\?\\*]|\.$)', '#', path_part)
+        path_part if path_part in ['.', '..'] else re.sub('(?:[/<>:"\\|\\\\?\\*]|[\s.]$)', '#', path_part)

         for path_part in norm_path]
     if drive_or_unc:
         sanitized_path.insert(0, drive_or_unc + os.path.sep)
     return os.path.join(*sanitized_path)
 
 
         for path_part in norm_path]
     if drive_or_unc:
         sanitized_path.insert(0, drive_or_unc + os.path.sep)
     return os.path.join(*sanitized_path)
 
 

+# Prepend protocol-less URLs with `http:` scheme in order to mitigate the number of
+# unwanted failures due to missing protocol
+def sanitized_Request(url, *args, **kwargs):
+    return compat_urllib_request.Request(
+        'http:%s' % url if url.startswith('//') else url, *args, **kwargs)
+
+

 def orderedSet(iterable):
     """ Remove all duplicates from the input iterable """
     res = []
 def orderedSet(iterable):
     """ Remove all duplicates from the input iterable """
     res = []


@@ -354,10 +419,14 @@ def _htmlentity_transform(entity):
             numstr = '0%s' % numstr
         else:
             base = 10
             numstr = '0%s' % numstr
         else:
             base = 10

-        return compat_chr(int(numstr, base))
+        # See https://github.com/rg3/youtube-dl/issues/7518
+        try:
+            return compat_chr(int(numstr, base))
+        except ValueError:
+            pass

 
     # Unknown entity in name, return its literal representation
 
     # Unknown entity in name, return its literal representation

-    return ('&%s;' % entity)
+    return '&%s;' % entity

 
 
 def unescapeHTML(s):
 
 
 def unescapeHTML(s):


@@ -576,16 +645,19 @@ class ContentTooShortError(Exception):
     download is too small for what the server announced first, indicating
     the connection was probably interrupted.
     """
     download is too small for what the server announced first, indicating
     the connection was probably interrupted.
     """

-    # Both in bytes
-    downloaded = None
-    expected = None

 
     def __init__(self, downloaded, expected):
 
     def __init__(self, downloaded, expected):

+        # Both in bytes

         self.downloaded = downloaded
         self.expected = expected
 
 
 def _create_http_connection(ydl_handler, http_class, is_https, *args, **kwargs):
         self.downloaded = downloaded
         self.expected = expected
 
 
 def _create_http_connection(ydl_handler, http_class, is_https, *args, **kwargs):

+    # Working around python 2 bug (see http://bugs.python.org/issue17849) by limiting
+    # expected HTTP responses to meet HTTP/1.0 or later (see also
+    # https://github.com/rg3/youtube-dl/issues/6727)
+    if sys.version_info < (3, 0):
+        kwargs[b'strict'] = True

     hc = http_class(*args, **kwargs)
     source_address = ydl_handler._params.get('source_address')
     if source_address is not None:
     hc = http_class(*args, **kwargs)
     source_address = ydl_handler._params.get('source_address')
     if source_address is not None:


@@ -607,6 +679,16 @@ def _create_http_connection(ydl_handler, http_class, is_https, *args, **kwargs):
     return hc
 
 
     return hc
 
 

+def handle_youtubedl_headers(headers):
+    filtered_headers = headers
+
+    if 'Youtubedl-no-compression' in filtered_headers:
+        filtered_headers = dict((k, v) for k, v in filtered_headers.items() if k.lower() != 'accept-encoding')
+        del filtered_headers['Youtubedl-no-compression']
+
+    return filtered_headers
+
+

 class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
     """Handler for HTTP requests and responses.
 
 class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
     """Handler for HTTP requests and responses.
 


@@ -614,7 +696,7 @@ class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
     the standard headers to every HTTP request and handles gzipped and
     deflated responses from web servers. If compression is to be avoided in
     a particular request, the original request in the program code only has
     the standard headers to every HTTP request and handles gzipped and
     deflated responses from web servers. If compression is to be avoided in
     a particular request, the original request in the program code only has

-    to include the HTTP header "Youtubedl-No-Compression", which will be
+    to include the HTTP header "Youtubedl-no-compression", which will be

     removed before making the real request.
 
     Part of this code was copied from:
     removed before making the real request.
 
     Part of this code was copied from:


@@ -650,15 +732,33 @@ class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
         return ret
 
     def http_request(self, req):
         return ret
 
     def http_request(self, req):

+        # According to RFC 3986, URLs can not contain non-ASCII characters, however this is not
+        # always respected by websites, some tend to give out URLs with non percent-encoded
+        # non-ASCII characters (see telemb.py, ard.py [#3412])
+        # urllib chokes on URLs with non-ASCII characters (see http://bugs.python.org/issue3991)
+        # To work around aforementioned issue we will replace request's original URL with
+        # percent-encoded one
+        # Since redirects are also affected (e.g. http://www.southpark.de/alle-episoden/s18e09)
+        # the code of this workaround has been moved here from YoutubeDL.urlopen()
+        url = req.get_full_url()
+        url_escaped = escape_url(url)
+
+        # Substitute URL if any change after escaping
+        if url != url_escaped:
+            req_type = HEADRequest if req.get_method() == 'HEAD' else compat_urllib_request.Request
+            new_req = req_type(
+                url_escaped, data=req.data, headers=req.headers,
+                origin_req_host=req.origin_req_host, unverifiable=req.unverifiable)
+            new_req.timeout = req.timeout
+            req = new_req
+

         for h, v in std_headers.items():
             # Capitalize is needed because of Python bug 2275: http://bugs.python.org/issue2275
             # The dict keys are capitalized because of this bug by urllib
             if h.capitalize() not in req.headers:
                 req.add_header(h, v)
         for h, v in std_headers.items():
             # Capitalize is needed because of Python bug 2275: http://bugs.python.org/issue2275
             # The dict keys are capitalized because of this bug by urllib
             if h.capitalize() not in req.headers:
                 req.add_header(h, v)

-        if 'Youtubedl-no-compression' in req.headers:
-            if 'Accept-encoding' in req.headers:
-                del req.headers['Accept-encoding']
-            del req.headers['Youtubedl-no-compression']
+
+        req.headers = handle_youtubedl_headers(req.headers)

 
         if sys.version_info < (2, 7) and '#' in req.get_full_url():
             # Python 2.6 is brain-dead when it comes to fragments
 
         if sys.version_info < (2, 7) and '#' in req.get_full_url():
             # Python 2.6 is brain-dead when it comes to fragments


@@ -689,11 +789,25 @@ class YoutubeDLHandler(compat_urllib_request.HTTPHandler):
                     raise original_ioerror
             resp = self.addinfourl_wrapper(uncompressed, old_resp.headers, old_resp.url, old_resp.code)
             resp.msg = old_resp.msg
                     raise original_ioerror
             resp = self.addinfourl_wrapper(uncompressed, old_resp.headers, old_resp.url, old_resp.code)
             resp.msg = old_resp.msg

+            del resp.headers['Content-encoding']

         # deflate
         if resp.headers.get('Content-encoding', '') == 'deflate':
             gz = io.BytesIO(self.deflate(resp.read()))
             resp = self.addinfourl_wrapper(gz, old_resp.headers, old_resp.url, old_resp.code)
             resp.msg = old_resp.msg
         # deflate
         if resp.headers.get('Content-encoding', '') == 'deflate':
             gz = io.BytesIO(self.deflate(resp.read()))
             resp = self.addinfourl_wrapper(gz, old_resp.headers, old_resp.url, old_resp.code)
             resp.msg = old_resp.msg

+            del resp.headers['Content-encoding']
+        # Percent-encode redirect URL of Location HTTP header to satisfy RFC 3986 (see
+        # https://github.com/rg3/youtube-dl/issues/6457).
+        if 300 <= resp.code < 400:
+            location = resp.headers.get('Location')
+            if location:
+                # As of RFC 2616 default charset is iso-8859-1 that is respected by python 3
+                if sys.version_info >= (3, 0):
+                    location = location.encode('iso-8859-1').decode('utf-8')
+                location_escaped = escape_url(location)
+                if location != location_escaped:
+                    del resp.headers['Location']
+                    resp.headers['Location'] = location_escaped

         return resp
 
     https_request = http_request
         return resp
 
     https_request = http_request


@@ -717,15 +831,41 @@ class YoutubeDLHTTPSHandler(compat_urllib_request.HTTPSHandler):
             req, **kwargs)
 
 
             req, **kwargs)
 
 

+class YoutubeDLCookieProcessor(compat_urllib_request.HTTPCookieProcessor):
+    def __init__(self, cookiejar=None):
+        compat_urllib_request.HTTPCookieProcessor.__init__(self, cookiejar)
+
+    def http_response(self, request, response):
+        # Python 2 will choke on next HTTP request in row if there are non-ASCII
+        # characters in Set-Cookie HTTP header of last response (see
+        # https://github.com/rg3/youtube-dl/issues/6769).
+        # In order to at least prevent crashing we will percent encode Set-Cookie
+        # header before HTTPCookieProcessor starts processing it.
+        # if sys.version_info < (3, 0) and response.headers:
+        #     for set_cookie_header in ('Set-Cookie', 'Set-Cookie2'):
+        #         set_cookie = response.headers.get(set_cookie_header)
+        #         if set_cookie:
+        #             set_cookie_escaped = compat_urllib_parse.quote(set_cookie, b"%/;:@&=+$,!~*'()?#[] ")
+        #             if set_cookie != set_cookie_escaped:
+        #                 del response.headers[set_cookie_header]
+        #                 response.headers[set_cookie_header] = set_cookie_escaped
+        return compat_urllib_request.HTTPCookieProcessor.http_response(self, request, response)
+
+    https_request = compat_urllib_request.HTTPCookieProcessor.http_request
+    https_response = http_response
+
+

 def parse_iso8601(date_str, delimiter='T', timezone=None):
     """ Return a UNIX timestamp from the given date """
 
     if date_str is None:
         return None
 
 def parse_iso8601(date_str, delimiter='T', timezone=None):
     """ Return a UNIX timestamp from the given date """
 
     if date_str is None:
         return None
 

+    date_str = re.sub(r'\.[0-9]+', '', date_str)
+

     if timezone is None:
         m = re.search(
     if timezone is None:
         m = re.search(

-            r'(\.[0-9]+)?(?:Z$| ?(?P<sign>\+|-)(?P<hours>[0-9]{2}):?(?P<minutes>[0-9]{2})$)',
+            r'(?:Z$| ?(?P<sign>\+|-)(?P<hours>[0-9]{2}):?(?P<minutes>[0-9]{2})$)',

             date_str)
         if not m:
             timezone = datetime.timedelta()
             date_str)
         if not m:
             timezone = datetime.timedelta()


@@ -738,9 +878,12 @@ def parse_iso8601(date_str, delimiter='T', timezone=None):
                 timezone = datetime.timedelta(
                     hours=sign * int(m.group('hours')),
                     minutes=sign * int(m.group('minutes')))
                 timezone = datetime.timedelta(
                     hours=sign * int(m.group('hours')),
                     minutes=sign * int(m.group('minutes')))

-    date_format = '%Y-%m-%d{0}%H:%M:%S'.format(delimiter)
-    dt = datetime.datetime.strptime(date_str, date_format) - timezone
-    return calendar.timegm(dt.timetuple())
+    try:
+        date_format = '%Y-%m-%d{0}%H:%M:%S'.format(delimiter)
+        dt = datetime.datetime.strptime(date_str, date_format) - timezone
+        return calendar.timegm(dt.timetuple())
+    except ValueError:
+        pass

 
 
 def unified_strdate(date_str, day_first=True):
 
 
 def unified_strdate(date_str, day_first=True):


@@ -805,7 +948,8 @@ def unified_strdate(date_str, day_first=True):
         timetuple = email.utils.parsedate_tz(date_str)
         if timetuple:
             upload_date = datetime.datetime(*timetuple[:6]).strftime('%Y%m%d')
         timetuple = email.utils.parsedate_tz(date_str)
         if timetuple:
             upload_date = datetime.datetime(*timetuple[:6]).strftime('%Y%m%d')

-    return upload_date
+    if upload_date is not None:
+        return compat_str(upload_date)

 
 
 def determine_ext(url, default_ext='unknown_video'):
 
 
 def determine_ext(url, default_ext='unknown_video'):


@@ -814,6 +958,9 @@ def determine_ext(url, default_ext='unknown_video'):
     guess = url.partition('?')[0].rpartition('.')[2]
     if re.match(r'^[A-Za-z0-9]+$', guess):
         return guess
     guess = url.partition('?')[0].rpartition('.')[2]
     if re.match(r'^[A-Za-z0-9]+$', guess):
         return guess

+    # Try extract ext from URLs like http://example.com/foo/bar.mp4/?download
+    elif guess.rstrip('/') in KNOWN_EXTENSIONS:
+        return guess.rstrip('/')

     else:
         return default_ext
 
     else:
         return default_ext
 


@@ -838,7 +985,7 @@ def date_from_str(date_str):
         if sign == '-':
             time = -time
         unit = match.group('unit')
         if sign == '-':
             time = -time
         unit = match.group('unit')

-        # A bad aproximation?
+        # A bad approximation?

         if unit == 'month':
             unit = 'day'
             time *= 30
         if unit == 'month':
             unit = 'day'
             time *= 30


@@ -848,7 +995,7 @@ def date_from_str(date_str):
         unit += 's'
         delta = datetime.timedelta(**{unit: time})
         return today + delta
         unit += 's'
         delta = datetime.timedelta(**{unit: time})
         return today + delta

-    return datetime.datetime.strptime(date_str, "%Y%m%d").date()
+    return datetime.datetime.strptime(date_str, '%Y%m%d').date()

 
 
 def hyphenate_date(date_str):
 
 
 def hyphenate_date(date_str):


@@ -928,22 +1075,22 @@ def _windows_write_string(s, out):
 
     GetStdHandle = ctypes.WINFUNCTYPE(
         ctypes.wintypes.HANDLE, ctypes.wintypes.DWORD)(
 
     GetStdHandle = ctypes.WINFUNCTYPE(
         ctypes.wintypes.HANDLE, ctypes.wintypes.DWORD)(

-        (b"GetStdHandle", ctypes.windll.kernel32))
+        (b'GetStdHandle', ctypes.windll.kernel32))

     h = GetStdHandle(WIN_OUTPUT_IDS[fileno])
 
     WriteConsoleW = ctypes.WINFUNCTYPE(
         ctypes.wintypes.BOOL, ctypes.wintypes.HANDLE, ctypes.wintypes.LPWSTR,
         ctypes.wintypes.DWORD, ctypes.POINTER(ctypes.wintypes.DWORD),
     h = GetStdHandle(WIN_OUTPUT_IDS[fileno])
 
     WriteConsoleW = ctypes.WINFUNCTYPE(
         ctypes.wintypes.BOOL, ctypes.wintypes.HANDLE, ctypes.wintypes.LPWSTR,
         ctypes.wintypes.DWORD, ctypes.POINTER(ctypes.wintypes.DWORD),

-        ctypes.wintypes.LPVOID)((b"WriteConsoleW", ctypes.windll.kernel32))
+        ctypes.wintypes.LPVOID)((b'WriteConsoleW', ctypes.windll.kernel32))

     written = ctypes.wintypes.DWORD(0)
 
     written = ctypes.wintypes.DWORD(0)
 

-    GetFileType = ctypes.WINFUNCTYPE(ctypes.wintypes.DWORD, ctypes.wintypes.DWORD)((b"GetFileType", ctypes.windll.kernel32))
+    GetFileType = ctypes.WINFUNCTYPE(ctypes.wintypes.DWORD, ctypes.wintypes.DWORD)((b'GetFileType', ctypes.windll.kernel32))

     FILE_TYPE_CHAR = 0x0002
     FILE_TYPE_REMOTE = 0x8000
     GetConsoleMode = ctypes.WINFUNCTYPE(
         ctypes.wintypes.BOOL, ctypes.wintypes.HANDLE,
         ctypes.POINTER(ctypes.wintypes.DWORD))(
     FILE_TYPE_CHAR = 0x0002
     FILE_TYPE_REMOTE = 0x8000
     GetConsoleMode = ctypes.WINFUNCTYPE(
         ctypes.wintypes.BOOL, ctypes.wintypes.HANDLE,
         ctypes.POINTER(ctypes.wintypes.DWORD))(

-        (b"GetConsoleMode", ctypes.windll.kernel32))
+        (b'GetConsoleMode', ctypes.windll.kernel32))

     INVALID_HANDLE_VALUE = ctypes.wintypes.DWORD(-1).value
 
     def not_a_console(handle):
     INVALID_HANDLE_VALUE = ctypes.wintypes.DWORD(-1).value
 
     def not_a_console(handle):


@@ -1161,7 +1308,7 @@ def parse_filesize(s):
     if s is None:
         return None
 
     if s is None:
         return None
 

-    # The lower-case forms are of course incorrect and inofficial,
+    # The lower-case forms are of course incorrect and unofficial,

     # but we support those too
     _UNIT_TABLE = {
         'B': 1,
     # but we support those too
     _UNIT_TABLE = {
         'B': 1,


@@ -1241,7 +1388,7 @@ def fix_xml_ampersands(xml_str):
 def setproctitle(title):
     assert isinstance(title, compat_str)
     try:
 def setproctitle(title):
     assert isinstance(title, compat_str)
     try:

-        libc = ctypes.cdll.LoadLibrary("libc.so.6")
+        libc = ctypes.cdll.LoadLibrary('libc.so.6')

     except OSError:
         return
     title_bytes = title.encode('utf-8')
     except OSError:
         return
     title_bytes = title.encode('utf-8')


@@ -1265,6 +1412,15 @@ def remove_end(s, end):
     return s
 
 
     return s
 
 

+def remove_quotes(s):
+    if s is None or len(s) < 2:
+        return s
+    for quote in ('"', "'", ):
+        if s[0] == quote and s[-1] == quote:
+            return s[1:-1]
+    return s
+
+

 def url_basename(url):
     path = compat_urlparse.urlparse(url).path
     return path.strip('/').split('/')[-1]
 def url_basename(url):
     path = compat_urlparse.urlparse(url).path
     return path.strip('/').split('/')[-1]


@@ -1272,7 +1428,7 @@ def url_basename(url):
 
 class HEADRequest(compat_urllib_request.Request):
     def get_method(self):
 
 class HEADRequest(compat_urllib_request.Request):
     def get_method(self):

-        return "HEAD"
+        return 'HEAD'

 
 
 def int_or_none(v, scale=1, default=None, get_attr=None, invscale=1):
 
 
 def int_or_none(v, scale=1, default=None, get_attr=None, invscale=1):


@@ -1281,7 +1437,12 @@ def int_or_none(v, scale=1, default=None, get_attr=None, invscale=1):
             v = getattr(v, get_attr, None)
     if v == '':
         v = None
             v = getattr(v, get_attr, None)
     if v == '':
         v = None

-    return default if v is None else (int(v) * invscale // scale)
+    if v is None:
+        return default
+    try:
+        return int(v) * invscale // scale
+    except ValueError:
+        return default

 
 
 def str_or_none(v, default=None):
 
 
 def str_or_none(v, default=None):


@@ -1297,7 +1458,12 @@ def str_to_int(int_str):
 
 
 def float_or_none(v, scale=1, invscale=1, default=None):
 
 
 def float_or_none(v, scale=1, invscale=1, default=None):

-    return default if v is None else (float(v) * invscale / scale)
+    if v is None:
+        return default
+    try:
+        return float(v) * invscale / scale
+    except ValueError:
+        return default

 
 
 def parse_duration(s):
 
 
 def parse_duration(s):


@@ -1309,10 +1475,10 @@ def parse_duration(s):
     m = re.match(
         r'''(?ix)(?:P?T)?
         (?:
     m = re.match(
         r'''(?ix)(?:P?T)?
         (?:

-            (?P<only_mins>[0-9.]+)\s*(?:mins?|minutes?)\s*|
+            (?P<only_mins>[0-9.]+)\s*(?:mins?\.?|minutes?)\s*|

             (?P<only_hours>[0-9.]+)\s*(?:hours?)|
 
             (?P<only_hours>[0-9.]+)\s*(?:hours?)|
 

-            \s*(?P<hours_reversed>[0-9]+)\s*(?:[:h]|hours?)\s*(?P<mins_reversed>[0-9]+)\s*(?:[:m]|mins?|minutes?)\s*|
+            \s*(?P<hours_reversed>[0-9]+)\s*(?:[:h]|hours?)\s*(?P<mins_reversed>[0-9]+)\s*(?:[:m]|mins?\.?|minutes?)\s*|

             (?:
                 (?:
                     (?:(?P<days>[0-9]+)\s*(?:[:d]|days?)\s*)?
             (?:
                 (?:
                     (?:(?P<days>[0-9]+)\s*(?:[:d]|days?)\s*)?


@@ -1546,27 +1712,24 @@ def urlencode_postdata(*args, **kargs):
     return compat_urllib_parse.urlencode(*args, **kargs).encode('ascii')
 
 
     return compat_urllib_parse.urlencode(*args, **kargs).encode('ascii')
 
 

-try:
-    etree_iter = xml.etree.ElementTree.Element.iter
-except AttributeError:  # Python <=2.6
-    etree_iter = lambda n: n.findall('.//*')
+def encode_dict(d, encoding='utf-8'):
+    def encode(v):
+        return v.encode(encoding) if isinstance(v, compat_basestring) else v
+    return dict((encode(k), encode(v)) for k, v in d.items())

 
 
 
 

-def parse_xml(s):
-    class TreeBuilder(xml.etree.ElementTree.TreeBuilder):
-        def doctype(self, name, pubid, system):
-            pass  # Ignore doctypes
+def dict_get(d, key_or_keys, default=None, skip_false_values=True):
+    if isinstance(key_or_keys, (list, tuple)):
+        for key in key_or_keys:
+            if key not in d or d[key] is None or skip_false_values and not d[key]:
+                continue
+            return d[key]
+        return default
+    return d.get(key_or_keys, default)

 
 

-    parser = xml.etree.ElementTree.XMLParser(target=TreeBuilder())
-    kwargs = {'parser': parser} if sys.version_info >= (2, 7) else {}
-    tree = xml.etree.ElementTree.XML(s.encode('utf-8'), **kwargs)
-    # Fix up XML parser in Python 2.x
-    if sys.version_info < (3, 0):
-        for n in etree_iter(tree):
-            if n.text is not None:
-                if not isinstance(n.text, compat_str):
-                    n.text = n.text.decode('utf-8')
-    return tree
+
+def encode_compat_str(string, encoding=preferredencoding(), errors='strict'):
+    return string if isinstance(string, compat_str) else compat_str(string, encoding, errors)

 
 
 US_RATINGS = {
 
 
 US_RATINGS = {


@@ -1582,12 +1745,12 @@ def parse_age_limit(s):
     if s is None:
         return None
     m = re.match(r'^(?P<age>\d{1,2})\+?$', s)
     if s is None:
         return None
     m = re.match(r'^(?P<age>\d{1,2})\+?$', s)

-    return int(m.group('age')) if m else US_RATINGS.get(s, None)
+    return int(m.group('age')) if m else US_RATINGS.get(s)

 
 
 def strip_jsonp(code):
     return re.sub(
 
 
 def strip_jsonp(code):
     return re.sub(

-        r'(?s)^[a-zA-Z0-9_]+\s*\(\s*(.*)\);?\s*?(?://[^\n]*)*$', r'\1', code)
+        r'(?s)^[a-zA-Z0-9_.]+\s*\(\s*(.*)\);?\s*?(?://[^\n]*)*$', r'\1', code)

 
 
 def js_to_json(code):
 
 
 def js_to_json(code):


@@ -1596,8 +1759,8 @@ def js_to_json(code):
         if v in ('true', 'false', 'null'):
             return v
         if v.startswith('"'):
         if v in ('true', 'false', 'null'):
             return v
         if v.startswith('"'):

-            return v
-        if v.startswith("'"):
+            v = re.sub(r"\\'", "'", v[1:-1])
+        elif v.startswith("'"):

             v = v[1:-1]
             v = re.sub(r"\\\\|\\'|\"", lambda m: {
                 '\\\\': '\\\\',
             v = v[1:-1]
             v = re.sub(r"\\\\|\\'|\"", lambda m: {
                 '\\\\': '\\\\',


@@ -1663,13 +1826,34 @@ def args_to_str(args):
     return ' '.join(shlex_quote(a) for a in args)
 
 
     return ' '.join(shlex_quote(a) for a in args)
 
 

+def error_to_compat_str(err):
+    err_str = str(err)
+    # On python 2 error byte string must be decoded with proper
+    # encoding rather than ascii
+    if sys.version_info[0] < 3:
+        err_str = err_str.decode(preferredencoding())
+    return err_str
+
+

 def mimetype2ext(mt):
 def mimetype2ext(mt):

+    ext = {
+        'audio/mp4': 'm4a',
+    }.get(mt)
+    if ext is not None:
+        return ext
+

     _, _, res = mt.rpartition('/')
 
     return {
     _, _, res = mt.rpartition('/')
 
     return {

-        'x-ms-wmv': 'wmv',
-        'x-mp4-fragmented': 'mp4',
+        '3gpp': '3gp',
+        'smptett+xml': 'tt',
+        'srt': 'srt',
+        'ttaf+xml': 'dfxp',

         'ttml+xml': 'ttml',
         'ttml+xml': 'ttml',

+        'vtt': 'vtt',
+        'x-flv': 'flv',
+        'x-mp4-fragmented': 'mp4',
+        'x-ms-wmv': 'wmv',

     }.get(res, res)
 
 
     }.get(res, res)
 
 


@@ -1691,6 +1875,10 @@ def urlhandle_detect_ext(url_handle):
     return mimetype2ext(getheader('Content-Type'))
 
 
     return mimetype2ext(getheader('Content-Type'))
 
 

+def encode_data_uri(data, mime_type):
+    return 'data:%s;base64,%s' % (mime_type, base64.b64encode(data).decode('ascii'))
+
+

 def age_restricted(content_limit, age_limit):
     """ Returns True iff the content should be blocked """
 
 def age_restricted(content_limit, age_limit):
     """ Returns True iff the content should be blocked """
 


@@ -1829,15 +2017,15 @@ def match_filter_func(filter_str):
 
 def parse_dfxp_time_expr(time_expr):
     if not time_expr:
 
 def parse_dfxp_time_expr(time_expr):
     if not time_expr:

-        return 0.0
+        return

 
     mobj = re.match(r'^(?P<time_offset>\d+(?:\.\d+)?)s?$', time_expr)
     if mobj:
         return float(mobj.group('time_offset'))
 
 
     mobj = re.match(r'^(?P<time_offset>\d+(?:\.\d+)?)s?$', time_expr)
     if mobj:
         return float(mobj.group('time_offset'))
 

-    mobj = re.match(r'^(\d+):(\d\d):(\d\d(?:\.\d+)?)$', time_expr)
+    mobj = re.match(r'^(\d+):(\d\d):(\d\d(?:(?:\.|:)\d+)?)$', time_expr)

     if mobj:
     if mobj:

-        return 3600 * int(mobj.group(1)) + 60 * int(mobj.group(2)) + float(mobj.group(3))
+        return 3600 * int(mobj.group(1)) + 60 * int(mobj.group(2)) + float(mobj.group(3).replace(':', '.'))

 
 
 def srt_subtitles_timecode(seconds):
 
 
 def srt_subtitles_timecode(seconds):


@@ -1850,22 +2038,29 @@ def dfxp2srt(dfxp_data):
         'ttaf1': 'http://www.w3.org/2006/10/ttaf1',
     })
 
         'ttaf1': 'http://www.w3.org/2006/10/ttaf1',
     })
 

-    def parse_node(node):
-        str_or_empty = functools.partial(str_or_none, default='')
+    class TTMLPElementParser(object):
+        out = ''

 
 

-        out = str_or_empty(node.text)
+        def start(self, tag, attrib):
+            if tag in (_x('ttml:br'), _x('ttaf1:br'), 'br'):
+                self.out += '\n'

 
 

-        for child in node:
-            if child.tag in (_x('ttml:br'), _x('ttaf1:br'), 'br'):
-                out += '\n' + str_or_empty(child.tail)
-            elif child.tag in (_x('ttml:span'), _x('ttaf1:span'), 'span'):
-                out += str_or_empty(parse_node(child))
-            else:
-                out += str_or_empty(xml.etree.ElementTree.tostring(child))
+        def end(self, tag):
+            pass
+
+        def data(self, data):
+            self.out += data

 
 

-        return out
+        def close(self):
+            return self.out.strip()

 
 

-    dfxp = xml.etree.ElementTree.fromstring(dfxp_data.encode('utf-8'))
+    def parse_node(node):
+        target = TTMLPElementParser()
+        parser = xml.etree.ElementTree.XMLParser(target=target)
+        parser.feed(xml.etree.ElementTree.tostring(node))
+        return parser.close()
+
+    dfxp = compat_etree_fromstring(dfxp_data.encode('utf-8'))

     out = []
     paras = dfxp.findall(_x('.//ttml:p')) or dfxp.findall(_x('.//ttaf1:p')) or dfxp.findall('.//p')
 
     out = []
     paras = dfxp.findall(_x('.//ttml:p')) or dfxp.findall(_x('.//ttaf1:p')) or dfxp.findall('.//p')
 


@@ -1873,10 +2068,15 @@ def dfxp2srt(dfxp_data):
         raise ValueError('Invalid dfxp/TTML subtitle')
 
     for para, index in zip(paras, itertools.count(1)):
         raise ValueError('Invalid dfxp/TTML subtitle')
 
     for para, index in zip(paras, itertools.count(1)):

-        begin_time = parse_dfxp_time_expr(para.attrib['begin'])
+        begin_time = parse_dfxp_time_expr(para.attrib.get('begin'))

         end_time = parse_dfxp_time_expr(para.attrib.get('end'))
         end_time = parse_dfxp_time_expr(para.attrib.get('end'))

+        dur = parse_dfxp_time_expr(para.attrib.get('dur'))
+        if begin_time is None:
+            continue

         if not end_time:
         if not end_time:

-            end_time = begin_time + parse_dfxp_time_expr(para.attrib['dur'])
+            if not dur:
+                continue
+            end_time = begin_time + dur

         out.append('%d\n%s --> %s\n%s\n\n' % (
             index,
             srt_subtitles_timecode(begin_time),
         out.append('%d\n%s --> %s\n%s\n\n' % (
             index,
             srt_subtitles_timecode(begin_time),


@@ -1886,6 +2086,32 @@ def dfxp2srt(dfxp_data):
     return ''.join(out)
 
 
     return ''.join(out)
 
 

+def cli_option(params, command_option, param):
+    param = params.get(param)
+    return [command_option, param] if param is not None else []
+
+
+def cli_bool_option(params, command_option, param, true_value='true', false_value='false', separator=None):
+    param = params.get(param)
+    assert isinstance(param, bool)
+    if separator:
+        return [command_option + separator + (true_value if param else false_value)]
+    return [command_option, true_value if param else false_value]
+
+
+def cli_valueless_option(params, command_option, param, expected_value=True):
+    param = params.get(param)
+    return [command_option] if param == expected_value else []
+
+
+def cli_configuration_args(params, param, default=[]):
+    ex_args = params.get(param)
+    if ex_args is None:
+        return default
+    assert isinstance(ex_args, list)
+    return ex_args
+
+

 class ISO639Utils(object):
     # See http://www.loc.gov/standards/iso639-2/ISO-639-2_utf-8.txt
     _lang_map = {
 class ISO639Utils(object):
     # See http://www.loc.gov/standards/iso639-2/ISO-639-2_utf-8.txt
     _lang_map = {


@@ -2367,3 +2593,20 @@ class PerRequestProxyHandler(compat_urllib_request.ProxyHandler):
             return None  # No Proxy
         return compat_urllib_request.ProxyHandler.proxy_open(
             self, req, proxy, type)
             return None  # No Proxy
         return compat_urllib_request.ProxyHandler.proxy_open(
             self, req, proxy, type)

+
+
+def ohdave_rsa_encrypt(data, exponent, modulus):
+    '''
+    Implement OHDave's RSA algorithm. See http://www.ohdave.com/rsa/
+
+    Input:
+        data: data to encrypt, bytes-like object
+        exponent, modulus: parameter e and N of RSA algorithm, both integer
+    Output: hex string of encrypted data
+
+    Limitation: supports one block encryption only
+    '''
+
+    payload = int(binascii.hexlify(data[::-1]), 16)
+    encrypted = pow(payload, exponent, modulus)
+    return '%x' % encrypted