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check.py
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check.py
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#! /usr/bin/python
# coding: utf-8
# -----------------------------------------------------------------------
# Online XSPF Validator
# Copyright (C) 2007-2008, Sebastian Pipping / Xiph.Org Foundation
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 3 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Sebastian Pipping, sping@xiph.org
#
# -----------------------------------------------------------------------
# REQUIREMENTS
# -----------------------------------------------------------------------
# * Python 2.4 or later (for current line attribute of Expat parser)
#
# -----------------------------------------------------------------------
# HISTORY
# -----------------------------------------------------------------------
# 2018-06-13 -- Sebastian Pipping <sebastian@pipping.org>
#
# * Removed: Link to Flattr page
# * Changed: Link to Git repository
#
# 2010-05-29 -- Sebastian Pipping <sebastian@pipping.org>
#
# * Added: Link to Flattr page
# * Added: Note for installation on Gentoo
#
# 2009-06-02 -- Sebastian Pipping <sebastian@pipping.org>
#
# * Fixed: Quick fix allowing attribute xml:id to appear anywhere
#
# 2008-09-19 -- Elias Pipping <elias@pipping.org>,
# Sebastian Pipping <webmaster@hartwork.org>
#
# * Fixed: Malicious XML detection added
# (might turn out to strict or too loose but it's a start)
#
# 2008-09-06 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Fixed: Now closing files properly
# * Added: Bring back "https" scheme support unintentionally
# removed two days ago
#
# 2008-09-04 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Fixed: [SECURITY] Accessing local files was possible
# through using file URIs like file:///etc/passwd
# * Fixed: [SECURITY] XSS vulnerability existed with URIs like
# [..]check.py?uri=[..javascript..]
# * Fixed: [SECURITY] XSS vulnerability existed for
# certain XSPF input, e.g. in attribute //playlist.version.
# This did not require an existing file as the input could
# directly passed through URIs like
# [..]check.py?pasted=[..javascript..]&submitPasted=Submit
# * Fixed: Required attributes 'rel' (<link>/<meta>)
# and 'application' (<extention>) were not reported missing
# Related test case files from <for_version_1/fail> are:
# - playlist-extension-application-missing.xspf
# - playlist-link-rel-missing.xspf
# - playlist-meta-rel-missing.xspf
# - track-extension-application-missing.xspf
# - track-link-rel-missing.xspf
# - track-meta-rel-missing.xspf
#
# 2008-08-25 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Fixed: 'xml:base' attribute now allowed anywhere, was
# root node only before
# * Fixed: Error "Attribute '<value>' not allowed" was shown
# instead of "Attribute '<key>' not allowed".
#
# 2008-07-31 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Fixed: Support for 'xml:base' attribute added
# * Fixed: Support for XML namespaces added
# * Fixed: Additional invalid root attributes now rejected
#
# 2007-10-04 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Changed: Link bar updated
#
# 2007-10-03 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Added: Button embedding how-to
#
# 2007-09-24 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Fixed: Another bug in whitespace handling
# * Added: Finally made testable from the command line
#
# 2007-09-21 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Added: RFC 3986 URI validation
# * Fixed: Whitespace handling fixes copied over from libSpiff
# * Changed: Code re-licensed under LGPLv3 (LGPL-Any before) to be
# able to use 4Suite's Apache-licensed URI validation code
# (http://www.gnu.org/licenses/lgpl-3.0.html)
#
# 2007-08-09 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Fixed: Ivo's changes repaired to have same look again
# I use tables when pixel-exact layout is need since
# CSS support in browsers is not good enough yet
#
# 2007-07-30 -- Ivo Emanuel Gonçalves <justivo gmail.com>
#
# * Some HTML and CSS fixes
#
# 2007-07-25 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Changes: License changed from GPL to LGPL
# (http://www.gnu.org/licenses/lgpl-2.1.html)
#
# 2007-02-18 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Added: License header for source code release
#
# 2007-01-20 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Changed: URI checking removed until proper parser available
#
# 2007-01-09 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Fixed: No highlighting on XML error bug fixed
#
# 2006-10-09 -- Sebastian Pipping <webmaster@hartwork.org>
#
# * Changed: "Valid" now on the top
#
# 2006-10-04 -- Sebastian Pipping <webmaster@hartwork.org>
# ------------------------------------------------------------------------------
import cgi
############## import cgitb; cgitb.enable()
import urllib2
import sys
import xml.parsers.expat
import re
from urlparse import urlparse
print "Content-Type: text/html" # HTML is following
print # blank line, end of headers
# Get the basename of this script
# co = sys._getframe().f_code
# SELFBASE = co.co_filename
def isSafeDownloadTarget(candidate):
u = urlparse(candidate)
if not u.scheme:
return False
allowedSchemes = set(["http", "https"])
return u.scheme.lower() in allowedSchemes
class MaliciousXmlException(Exception):
pass
print """
<html lang="en" dir="ltr">
<head>
<title>XSPF Validator — Validate your playlists</title>
<style type="text/css">
body {
background-color:rgb(230,230,230);
margin:0;
}
body, td, h1, h2, h3, h4 {
font-family:Verdana, sans-serif;
}
a {
color:rgb(130,130,130);
text-decoration:none;
}
td.vert {
background-color:rgb(180,180,180);
font-size:1pt;
width:2px;
padding:0px;
}
td.number {
text-align:right;
vertical-align:top;
padding-top:3px;
padding-bottom:3px;
padding-right:8px;
}
a.number {
color:#000000;
text-decoration:underline;
}
td.error {
padding-left:8px;
}
td.horz {
background-color:rgb(180,180,180);
font-size:1px;
height:2px;
padding:0;
line-height:1px;
}
span.invalid {
text-transform:uppercase;
padding-left:2px;
color:red;
font-weight:bold;
}
span.valid {
text-transform:uppercase;
padding-left:2px;
color:green;
font-weight:bold;
}
td.lineNumber {
background-color:rgb(222,222,222);
font-family:"Courier New", monospace;
text-align:right;
vertical-align:top;
padding-top:3px;
padding-bottom:3px;
padding-left:8px;
padding-right:4px;
}
td.lineVert {
background-color:rgb(0,0,0);
font-size:1pt;
width:1px;
padding:0;
}
td.lineOdd {
font-family:"Courier New", monospace;
background-color:rgb(236,236,236);
padding-top:3px;
padding-bottom:3px;
padding-left:4px;
padding-right:8px;
}
td.lineEven {
font-family:"Courier New", monospace;
background-color:rgb(250,250,250);
padding-top:3px;
padding-bottom:3px;
padding-left:4px;
padding-right:8px;
}
td.lineBad {
font-family:"Courier New", monospace;
background-color:rgb(255,188,188);
padding-top:3px;
padding-bottom:3px;
padding-left:4px;
padding-right:8px;
}
a.blackLink {
color:#000000;
text-decoration:none;
}
a.anchor {
color:#000000;
text-decoration:none;
}
</style>
</head>
<body>
<!-- CENTERING -->
<table height="100%" style="width:100%">
<tr>
<td align="center" valign="middle" style="padding:10px">
<!-- BORDER -->"""
valid = False
intro = ""
input = ""
shellMode = False
if (len(sys.argv) == 3) and (sys.argv[1] == "--shell"):
shellMode = True
try:
f = open(sys.argv[2])
try:
input = f.read()
finally:
f.close()
except IOError:
pass
if input != "":
intro = "Validating local file<br><b><i>" + sys.argv[2] + "</i></b><br><br>"
else:
form = cgi.FieldStorage()
if form.has_key("pasted") and form.has_key("submitPasted"):
input = form.getlist("pasted")[0]
if input != "":
intro = "Validating pasted text<br><br>"
elif form.has_key("uploaded") and form.has_key("submitUploaded"):
uploaded = form["uploaded"]
if uploaded.file:
try:
input = uploaded.file.read()
except IOError:
pass
finally:
uploaded.file.close()
if input != "":
intro = "Validating uploaded file<br><b><i>" + cgi.escape(uploaded.filename) + "</i></b><br><br>"
elif form.has_key("url"): ### and form.has_key("submitUrl")
url = form.getlist("url")[0]
if not isSafeDownloadTarget(url):
intro = """<b style="color:red;">Download location not considered safe.<br>Please do <em>not</em> attack this site. Thanks.</b><br><br>"""
else:
try:
file = urllib2.urlopen(url)
try:
input = file.read()
finally:
file.close()
except ValueError:
intro = """<b style="color:red;">Invalid URL.</b><br><br>"""
except Exception: ### urllib2.URLError:
# One of 404, non-existent host, IPv6 (not supported), ...
intro = """<b style="color:red">Could not download from URL.</b><br><br>"""
if input != "":
intro = "Validating data from URL<br><b><i><a href=\"" + cgi.escape(url, True) \
+ "\" class=\"blackLink\">" + cgi.escape(url) + "</a></i></b><br><br>"
lineHeads = [0]
if input != "":
index = -1
while 1:
index = input.find("\x0A", index + 1)
if index == -1:
break
lineHeads.append(index + 1)
if input == "":
# Formular 600
print """
<table cellpadding="0" cellspacing="0" width="600" style="border:1px solid rgb(180,180,180); background-color:#FFF;">"""
else:
# Results 800
print """
<table cellpadding="0" cellspacing="0" width="750" style="border:1px solid rgb(180,180,180); background-color:#FFF;">"""
print """
<tr>"""
if input == "":
# Formular centered
print """
<td align="center" style="padding-top:60px; padding-bottom:60px">
<form action="" accept-charset="UTF-8" enctype="multipart/form-data" method="post">
<!-- CONTENT -->
<table>"""
else:
# Results full width
print """
<td style="padding-top:60px; padding-bottom:50px;">
<!-- CONTENT -->
<table style="width:100%;">"""
print """
<tr>
<td style="padding-bottom: 20px;" align="center"><img src="xspflogo-1.5.gif" style="width:297px; height:83px; border:0;" alt=""></td>
</tr>"""
if input == "":
if intro != "":
print """
<tr>
<td style="width:100%;" align="center">"""
print intro
print """
</tr>"""
# Formular
print """
<tr>
<td style="padding-bottom:16px;">
Validate a Spiff playlist from ...
</td>
</tr>
<tr>
<td>
URL<br>
<input name="url" size="60" style="width: 350px;" type="text">
</td>
</tr>
<tr>
<td style="padding-bottom:20px">
<input name="submitUrl" value="Submit" type="submit">
</td>
</tr>
<tr>
<td>
Uploaded file<br>
<input name="uploaded" maxlength="100000" accept="text/*" size="41" type="file">
</td>
</tr>
<tr>
<td style="padding-bottom:20px;">
<input name="submitUploaded" value="Submit" type="submit">
</td>
</tr>
<tr>
<td>
Pasted text<br>
<textarea cols="60" rows="5" name="pasted" style="width: 350px;"></textarea>
</td>
</tr>
<tr>
<td>
<input name="submitPasted" value="Submit" type="submit">
</td>
</tr>"""
else:
print """
<tr>
<td style="padding-left:60px; padding-right:60px">"""
print intro
stack = []
valid = True
version = -1
accum = ""
TAG_UNKNOWN = 0
TAG_PLAYLIST = 1
TAG_PLAYLIST_TITLE = 2
TAG_PLAYLIST_CREATOR = 3
TAG_PLAYLIST_ANNOTATION = 4
TAG_PLAYLIST_INFO = 5
TAG_PLAYLIST_LOCATION = 6
TAG_PLAYLIST_IDENTIFIER = 7
TAG_PLAYLIST_IMAGE = 8
TAG_PLAYLIST_DATE = 9
TAG_PLAYLIST_LICENSE = 10
TAG_PLAYLIST_ATTRIBUTION = 11
TAG_PLAYLIST_ATTRIBUTION_LOCATION = 12
TAG_PLAYLIST_ATTRIBUTION_IDENTIFIER = 13
TAG_PLAYLIST_LINK = 14
TAG_PLAYLIST_META = 15
TAG_PLAYLIST_EXTENSION = 16
TAG_PLAYLIST_TRACKLIST = 17
TAG_PLAYLIST_TRACKLIST_TRACK = 18
TAG_PLAYLIST_TRACKLIST_TRACK_LOCATION = 19
TAG_PLAYLIST_TRACKLIST_TRACK_IDENTIFIER = 20
TAG_PLAYLIST_TRACKLIST_TRACK_TITLE = 21
TAG_PLAYLIST_TRACKLIST_TRACK_CREATOR = 22
TAG_PLAYLIST_TRACKLIST_TRACK_ANNOTATION = 23
TAG_PLAYLIST_TRACKLIST_TRACK_INFO = 24
TAG_PLAYLIST_TRACKLIST_TRACK_IMAGE = 25
TAG_PLAYLIST_TRACKLIST_TRACK_ALBUM = 26
TAG_PLAYLIST_TRACKLIST_TRACK_TRACKNUM = 27
TAG_PLAYLIST_TRACKLIST_TRACK_DURATION = 28
TAG_PLAYLIST_TRACKLIST_TRACK_LINK = 29
TAG_PLAYLIST_TRACKLIST_TRACK_META = 30
TAG_PLAYLIST_TRACKLIST_TRACK_EXTENSION = 31
skipAbove = -1
firstPlaylistAnnotation = True
firstPlaylistAttribution = True
firstPlaylistCreator = True
firstPlaylistDate = True
firstPlaylistIdentifier = True
firstPlaylistImage = True
firstPlaylistInfo = True
firstPlaylistLicense = True
firstPlaylistLocation = True
firstPlaylistTitle = True
firstPlaylistTrackList = True
firstTrackTitle = True
firstTrackCreator = True
firstTrackAnnotation = True
firstTrackInfo = True
firstTrackImage = True
firstTrackAlbum = True
firstTrackTrackNum = True
firstTrackDuration = True
firstTrack = True
dateRegex = re.compile("^(-?\\d\\d\\d\\d)-(0[1-9]|1[0-2])-(0[1-9]|1[0-9]|2[0-9]|3[0-1])T([0-1][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])(\\.\\d+)?([+-](((0[0-9]|1[0-3]):[0-5][0-9])|14:00)|Z)?$")
SPIFF_NS_HOME = "http://xspf.org/ns/0/"
SPIFF_NS_SEP_CHAR = " "
XML_NS_HOME = "http://www.w3.org/XML/1998/namespace"
checker = xml.parsers.expat.ParserCreate(None, SPIFF_NS_SEP_CHAR)
#############################################################################################
errorTable = []
def nsXspf(localName):
return SPIFF_NS_HOME + SPIFF_NS_SEP_CHAR + localName
def nsXml(localName):
return XML_NS_HOME + SPIFF_NS_SEP_CHAR + localName
def startErrorTable():
if not globals()["errorTable"]:
globals()["errorTable"].append("""
<h3>Error protocol:</h3>
<table cellspacing="0">
<tr><td class="number">Line</td><td class="number">Col</td><td class="vert"> </td><td class="error">Error</td></tr>
<tr height="1"><td class="horz"> </td><td class="horz"> </td><td class="horz"> </td><td class="horz"> </td></tr>""")
# line is one-based
def addError(line, col, escapedError):
globals()["errorTable"].append("<tr><td class=\"number\"><a href=\"#bad_" + str(line) + "\" class=\"number\">" + str(line) + "</a></td><td class=\"number\">" + str(col) + "</td><td class=\"vert\"> </td><td class=\"error\">" + escapedError + "</td></tr>")
def stopErrorTable():
if globals()["errorTable"]:
globals()["errorTable"].append("""
</table>
<br>
<br>""")
else:
globals()["errorTable"].append("""
<br>""")
sourceTable = []
lastLine = -1
def startSourceTable():
if not globals()["sourceTable"]:
globals()["sourceTable"].append("""
<h3>Processed input:</h3>
<table cellspacing="0">""")
def stopSourceTable():
startSourceTable()
# Add missing lines
LAST = globals()["lastLine"]
ALL = len(globals()["lineHeads"])
if LAST < ALL - 1:
moreSourceLinesIncluding(ALL - 1, False)
globals()["sourceTable"].append("""
</table>
<br>
<br>""")
# lineNumber is zero-based
def addSourceLine(lineNumber, badFlag):
globals()["sourceTable"].append("""
<tr>
<td class="lineNumber">""" + str(lineNumber + 1) + """</td>
<td class="lineVert"> </td>""")
if badFlag:
globals()["sourceTable"].append("""
<td class="lineBad"><a name=\"bad_""" + str(lineNumber + 1) + """\" class=\"anchor\">""")
elif lineNumber % 2:
globals()["sourceTable"].append("""
<td class="lineEven">""")
else:
globals()["sourceTable"].append("""
<td class="lineOdd">""")
# Last line or normal?
if lineNumber == len(globals()["lineHeads"]) - 1:
line = input[lineHeads[lineNumber]:]
else:
line = input[lineHeads[lineNumber]:lineHeads[lineNumber + 1] - 1]
MAX_CHARS_PER_LINE = 100
line2 = line[0:MAX_CHARS_PER_LINE]
for i in range(MAX_CHARS_PER_LINE, len(line), MAX_CHARS_PER_LINE):
line2 += "\n" + line[i:i + MAX_CHARS_PER_LINE]
globals()["sourceTable"].append(cgi.escape(line2).replace("\t", " ").replace(" ", " ").replace("\n", "<br>"))
if badFlag:
globals()["sourceTable"].append("""</a>""")
globals()["sourceTable"].append("""</td>
</tr>""")
# lineNumber is zero-based
def moreSourceLinesIncluding(lineNumber, badFlag):
LAST = globals()["lastLine"]
if lineNumber <= LAST:
return
for i in range(LAST + 1, lineNumber):
addSourceLine(i, False)
addSourceLine(lineNumber, badFlag)
globals()["lastLine"] = lineNumber
def fail(text):
globals()["valid"] = False
startErrorTable()
addError(checker.CurrentLineNumber, checker.CurrentColumnNumber + 1, text)
startSourceTable()
moreSourceLinesIncluding(checker.CurrentLineNumber - 1, True)
def checkXmlBase(xmlBase):
if not isUri(xmlBase):
fail("Attribute <i>xml:base</i> is not a URI.")
def handlePlaylistAttribs(atts):
versionFound = False
keys = atts.keys()
for i in range(len(atts)):
name = keys[i]
if name == "version":
dummyVersion = atts.values()[i]
if dummyVersion == "0":
globals()["version"] = 0
elif dummyVersion == "1":
globals()["version"] = 1
else:
fail("Version must be <i>0</i> or <i>1</i>, not '" + cgi.escape(dummyVersion) + "'.")
globals()["version"] = 1
versionFound = True
elif name == nsXml("base"):
xmlBase = atts.values()[i]
checkXmlBase(xmlBase)
elif name == nsXml("id"):
pass
else:
fail("Attribute '" + cgi.escape(name) + "' not allowed.")
if not versionFound:
fail("Attribute <i>version</i> missing.")
def handleNoAttribsExceptXmlBase(atts):
keys = atts.keys()
for i in range(len(atts)):
name = keys[i]
if name == nsXml("base"):
xmlBase = atts.values()[i]
checkXmlBase(xmlBase)
elif name == nsXml("id"):
pass
else:
fail("Attribute '" + cgi.escape(keys[i]) + "' not allowed.")
def handleExtensionAttribs(atts):
size = len(atts)
applicationFound = False
for i in range(size):
name = atts.keys()[i]
if name == "application":
if not isUri(atts.values()[i]):
fail("Attribute <i>application</i> is not a URI.")
applicationFound = True
elif name == nsXml("base"):
xmlBase = atts.values()[i]
checkXmlBase(xmlBase)
elif name == nsXml("id"):
pass
else:
fail("Attribute '" + cgi.escape(name) + "' not allowed.")
if not applicationFound:
fail("Attribute <i>application</i> missing.")
def handleMetaLinkAttribs(atts):
size = len(atts)
relFound = False
for i in range(size):
name = atts.keys()[i]
if name == "rel":
if not isUri(atts.values()[i]):
fail("Attribute <i>rel</i> is not a URI.")
relFound = True
elif name == nsXml("base"):
xmlBase = atts.values()[i]
checkXmlBase(xmlBase)
elif name == nsXml("id"):
pass
else:
fail("Attribute '" + cgi.escape(name) + "' not allowed.")
if not relFound:
fail("Attribute <i>rel</i> missing.")
def handleStartOne(name, atts):
if name != nsXspf("playlist"):
# fail("Element '" + cgi.escape(name) + "' not allowed.")
fail("Root element must be <i>playlist</i>, not '" + cgi.escape(name) + "'.")
else:
handlePlaylistAttribs(atts)
globals()["stack"].append(TAG_PLAYLIST)
def handleStartTwo(name, atts):
if name == nsXspf("annotation"):
if not globals()["firstPlaylistAnnotation"]:
fail("Only one <i>annotation</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistAnnotation"] = False
globals()["stack"].append(TAG_PLAYLIST_ANNOTATION)
elif name == nsXspf("attribution"):
if not globals()["firstPlaylistAttribution"]:
fail("Only one <i>attribution</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistAttribution"] = False
globals()["stack"].append(TAG_PLAYLIST_ATTRIBUTION)
elif name == nsXspf("creator"):
if not globals()["firstPlaylistCreator"]:
fail("Only one <i>creator</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistCreator"] = False
globals()["stack"].append(TAG_PLAYLIST_CREATOR)
elif name == nsXspf("date"):
if not globals()["firstPlaylistDate"]:
fail("Only one <i>date</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistDate"] = False
globals()["stack"].append(TAG_PLAYLIST_DATE)
elif name == nsXspf("extension"):
if globals()["version"] == 0:
fail("Element <i>" + cgi.escape(name) + "</i> not allowed in XSPF-0.")
else:
handleExtensionAttribs(atts)
globals()["stack"].append(TAG_PLAYLIST_EXTENSION)
# Skip extension body
globals()["skipAbove"] = 2
elif name == nsXspf("identifier"):
if not globals()["firstPlaylistIdentifier"]:
fail("Only one <i>identifier</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistIdentifier"] = False
globals()["stack"].append(TAG_PLAYLIST_IDENTIFIER)
elif name == nsXspf("image"):
if not globals()["firstPlaylistImage"]:
fail("Only one <i>image</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistImage"] = False
globals()["stack"].append(TAG_PLAYLIST_IMAGE)
elif name == nsXspf("info"):
if not globals()["firstPlaylistInfo"]:
fail("Only one <i>info</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistInfo"] = False
globals()["stack"].append(TAG_PLAYLIST_INFO)
elif name == nsXspf("license"):
if not globals()["firstPlaylistLicense"]:
fail("Only one <i>license</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistLicense"] = False
globals()["stack"].append(TAG_PLAYLIST_LICENSE)
elif name == nsXspf("link"):
handleMetaLinkAttribs(atts)
globals()["stack"].append(TAG_PLAYLIST_LINK)
elif name == nsXspf("location"):
if not globals()["firstPlaylistLocation"]:
fail("Only one <i>location</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistLocation"] = False
globals()["stack"].append(TAG_PLAYLIST_LOCATION)
elif name == nsXspf("meta"):
handleMetaLinkAttribs(atts)
globals()["stack"].append(TAG_PLAYLIST_META)
elif name == nsXspf("title"):
if not globals()["firstPlaylistTitle"]:
fail("Only one <i>title</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistTitle"] = False
globals()["stack"].append(TAG_PLAYLIST_TITLE)
elif name == nsXspf("trackList"):
globals()["firstPlaylistTrackList"]
if not globals()["firstPlaylistTrackList"]:
fail("Only one <i>trackList</i> allowed for <i>playlist</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstPlaylistTrackList"] = False
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST)
else:
fail("Element <i>" + cgi.escape(name) + "</i> not allowed.")
globals()["stack"].append(TAG_UNKNOWN)
# Skip body of forbidden element
# globals()["skipAbove"]
globals()["skipAbove"] = 2
def handleStartThree(name, atts):
stackTop = globals()["stack"][len(globals()["stack"]) - 1]
if stackTop == TAG_PLAYLIST_ATTRIBUTION:
if name == nsXspf("identifier"):
handleNoAttribsExceptXmlBase(atts)
globals()["stack"].append(TAG_PLAYLIST_ATTRIBUTION_IDENTIFIER)
elif name == nsXspf("location"):
handleNoAttribsExceptXmlBase(atts)
globals()["stack"].append(TAG_PLAYLIST_ATTRIBUTION_IDENTIFIER)
else:
fail("Element <i>" + cgi.escape(name) + "</i> not allowed.")
globals()["stack"].append(TAG_UNKNOWN)
# Skip body of forbidden element
# globals()["skipAbove"]
globals()["skipAbove"] = 3
elif stackTop == TAG_PLAYLIST_TRACKLIST:
if name == nsXspf("track"):
handleNoAttribsExceptXmlBase(atts)
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK)
else:
fail("Element <i>" + cgi.escape(name) + "</i> not allowed.")
globals()["stack"].append(TAG_UNKNOWN)
# Skip body of forbidden element
globals()["skipAbove"] = 3
globals()["firstTrack"] = False
else:
fail("Element <i>" + cgi.escape(name) + "</i> not allowed.")
globals()["stack"].append(TAG_UNKNOWN)
# Skip body of forbidden element
# globals()["skipAbove"]
globals()["skipAbove"] = 3
def handleStartFour(name, atts):
if name == nsXspf("album"):
if not globals()["firstTrackAlbum"]:
fail("Only one <i>album</i> allowed for <i>track</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstTrackAlbum"] = False
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_ALBUM)
elif name == nsXspf("annotation"):
if not globals()["firstTrackAnnotation"]:
fail("Only one <i>annotation</i> allowed for <i>track</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstTrackAnnotation"] = False
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_ANNOTATION)
elif name == nsXspf("creator"):
if not globals()["firstTrackCreator"]:
fail("Only one <i>creator</i> allowed for <i>track</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstTrackCreator"] = False
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_CREATOR)
elif name == nsXspf("duration"):
if not globals()["firstTrackDuration"]:
fail("Only one <i>duration</i> allowed for <i>track</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstTrackDuration"] = False
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_DURATION)
elif name == nsXspf("extension"):
if globals()["version"] == 0:
fail("Element <i>" + cgi.escape(name) + "</i> not allowed in XSPF-0.")
else:
handleExtensionAttribs(atts)
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_EXTENSION)
# Skip extension body
globals()["skipAbove"] = 4
elif name == nsXspf("identifier"):
handleNoAttribsExceptXmlBase(atts)
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_IDENTIFIER)
elif name == nsXspf("image"):
if not globals()["firstTrackImage"]:
fail("Only one <i>image</i> allowed for <i>track</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstTrackImage"] = False
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_IMAGE)
elif name == nsXspf("info"):
if not globals()["firstTrackInfo"]:
fail("Only one <i>info</i> allowed for <i>track</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstTrackInfo"] = False
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_INFO)
elif name == nsXspf("link"):
handleMetaLinkAttribs(atts)
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_LINK)
elif name == nsXspf("location"):
handleNoAttribsExceptXmlBase(atts)
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_LOCATION)
elif name == nsXspf("meta"):
handleMetaLinkAttribs(atts)
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_META)
elif name == nsXspf("trackNum"):
if not globals()["firstTrackTrackNum"]:
fail("Only one <i>trackNum</i> allowed for <i>track</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstTrackTrackNum"] = False
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_TRACKNUM)
elif name == nsXspf("title"):
if not globals()["firstTrackTitle"]:
fail("Only one <i>title</i> allowed for <i>track</i>.")
else:
handleNoAttribsExceptXmlBase(atts)
globals()["firstTrackTitle"] = False
globals()["stack"].append(TAG_PLAYLIST_TRACKLIST_TRACK_TITLE)
else:
fail("Element <i>" + cgi.escape(name) + "</i> not allowed.")
globals()["stack"].append(TAG_UNKNOWN)
# Skip body of forbidden element
globals()["skipAbove"] = 4
def handleStart(name, atts):
newLevel = len(globals()["stack"]) + 1
if (globals()["skipAbove"] != -1) and (newLevel > globals()["skipAbove"]):
globals()["stack"].append(TAG_UNKNOWN)
return