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15c367ffb4
PIL documents two different way to import it's modules: * import Image (http://www.pythonware.com/library/pil/handbook/introduction.htm) * from PIL import Image (http://www.pythonware.com/library/pil/handbook/image.htm) The same problem was noted in Django at https://code.djangoproject.com/ticket/6054
392 lines
11 KiB
Python
392 lines
11 KiB
Python
import re, cStringIO, traceback, json
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import urwid
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try: from PIL import Image
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except ImportError: import Image
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try: from PIL.ExifTags import TAGS
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except ImportError: from ExifTags import TAGS
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import lxml.html, lxml.etree
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import netlib.utils
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import common
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from .. import utils, encoding, flow
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from ..contrib import jsbeautifier, html2text
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try:
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import pyamf
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from pyamf import remoting
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except ImportError: # pragma nocover
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pyamf = None
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VIEW_CUTOFF = 1024*50
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def _view_text(content, total, limit):
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"""
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Generates a body for a chunk of text.
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"""
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txt = []
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for i in netlib.utils.cleanBin(content).splitlines():
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txt.append(
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urwid.Text(("text", i), wrap="any")
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)
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trailer(total, txt, limit)
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return txt
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def trailer(clen, txt, limit):
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rem = clen - limit
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if rem > 0:
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txt.append(urwid.Text(""))
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txt.append(
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urwid.Text(
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[
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("highlight", "... %s of data not shown. Press "%utils.pretty_size(rem)),
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("key", "f"),
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("highlight", " to load all data.")
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]
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)
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)
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class ViewAuto:
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name = "Auto"
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prompt = ("auto", "a")
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content_types = []
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def __call__(self, hdrs, content, limit):
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ctype = hdrs.get_first("content-type")
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if ctype:
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ct = utils.parse_content_type(ctype) if ctype else None
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ct = "%s/%s"%(ct[0], ct[1])
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if ct in content_types_map:
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return content_types_map[ct][0](hdrs, content, limit)
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elif utils.isXML(content):
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return get("XML")(hdrs, content, limit)
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return get("Raw")(hdrs, content, limit)
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class ViewRaw:
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name = "Raw"
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prompt = ("raw", "r")
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content_types = []
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def __call__(self, hdrs, content, limit):
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txt = _view_text(content[:limit], len(content), limit)
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return "Raw", txt
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class ViewHex:
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name = "Hex"
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prompt = ("hex", "e")
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content_types = []
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def __call__(self, hdrs, content, limit):
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txt = []
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for offset, hexa, s in netlib.utils.hexdump(content[:limit]):
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txt.append(urwid.Text([
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("offset", offset),
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" ",
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("text", hexa),
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" ",
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("text", s),
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]))
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trailer(len(content), txt, limit)
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return "Hex", txt
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class ViewXML:
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name = "XML"
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prompt = ("xml", "x")
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content_types = ["text/xml"]
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def __call__(self, hdrs, content, limit):
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parser = lxml.etree.XMLParser(remove_blank_text=True, resolve_entities=False, strip_cdata=False, recover=False)
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try:
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document = lxml.etree.fromstring(content, parser)
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except lxml.etree.XMLSyntaxError:
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return None
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docinfo = document.getroottree().docinfo
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prev = []
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p = document.getroottree().getroot().getprevious()
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while p is not None:
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prev.insert(
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0,
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lxml.etree.tostring(p)
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)
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p = p.getprevious()
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doctype=docinfo.doctype
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if prev:
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doctype += "\n".join(prev).strip()
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doctype = doctype.strip()
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s = lxml.etree.tostring(
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document,
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pretty_print=True,
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xml_declaration=True,
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doctype=doctype or None,
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encoding = docinfo.encoding
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)
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txt = []
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for i in s[:limit].strip().split("\n"):
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txt.append(
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urwid.Text(("text", i)),
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)
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trailer(len(content), txt, limit)
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return "XML-like data", txt
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class ViewJSON:
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name = "JSON"
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prompt = ("json", "j")
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content_types = ["application/json"]
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def __call__(self, hdrs, content, limit):
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lines = utils.pretty_json(content)
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if lines:
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txt = []
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sofar = 0
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for i in lines:
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sofar += len(i)
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txt.append(
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urwid.Text(("text", i)),
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)
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if sofar > limit:
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break
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trailer(sum(len(i) for i in lines), txt, limit)
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return "JSON", txt
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class ViewHTML:
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name = "HTML"
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prompt = ("html", "h")
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content_types = ["text/html"]
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def __call__(self, hdrs, content, limit):
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if utils.isXML(content):
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parser = lxml.etree.HTMLParser(strip_cdata=True, remove_blank_text=True)
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d = lxml.html.fromstring(content, parser=parser)
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docinfo = d.getroottree().docinfo
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s = lxml.etree.tostring(d, pretty_print=True, doctype=docinfo.doctype)
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return "HTML", _view_text(s[:limit], len(s), limit)
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class ViewHTMLOutline:
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name = "HTML Outline"
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prompt = ("html outline", "o")
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content_types = ["text/html"]
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def __call__(self, hdrs, content, limit):
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content = content.decode("utf-8")
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h = html2text.HTML2Text(baseurl="")
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h.ignore_images = True
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h.body_width = 0
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content = h.handle(content)
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txt = _view_text(content[:limit], len(content), limit)
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return "HTML Outline", txt
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class ViewURLEncoded:
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name = "URL-encoded"
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prompt = ("urlencoded", "u")
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content_types = ["application/x-www-form-urlencoded"]
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def __call__(self, hdrs, content, limit):
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lines = utils.urldecode(content)
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if lines:
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body = common.format_keyvals(
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[(k+":", v) for (k, v) in lines],
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key = "header",
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val = "text"
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)
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return "URLEncoded form", body
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class ViewMultipart:
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name = "Multipart Form"
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prompt = ("multipart", "m")
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content_types = ["multipart/form-data"]
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def __call__(self, hdrs, content, limit):
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v = hdrs.get_first("content-type")
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if v:
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v = utils.parse_content_type(v)
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if not v:
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return
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boundary = v[2].get("boundary")
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if not boundary:
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return
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rx = re.compile(r'\bname="([^"]+)"')
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keys = []
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vals = []
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for i in content.split("--" + boundary):
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parts = i.splitlines()
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if len(parts) > 1 and parts[0][0:2] != "--":
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match = rx.search(parts[1])
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if match:
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keys.append(match.group(1) + ":")
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vals.append(netlib.utils.cleanBin(
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"\n".join(parts[3+parts[2:].index(""):])
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))
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r = [
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urwid.Text(("highlight", "Form data:\n")),
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]
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r.extend(common.format_keyvals(
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zip(keys, vals),
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key = "header",
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val = "text"
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))
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return "Multipart form", r
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class ViewAMF:
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name = "AMF"
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prompt = ("amf", "f")
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content_types = ["application/x-amf"]
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def __call__(self, hdrs, content, limit):
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envelope = remoting.decode(content)
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if not envelope:
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return None
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data = {}
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data['amfVersion'] = envelope.amfVersion
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for target, message in iter(envelope):
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one_message = {}
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if hasattr(message, 'status'):
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one_message['status'] = message.status
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if hasattr(message, 'target'):
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one_message['target'] = message.target
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one_message['body'] = message.body
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data[target] = one_message
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s = json.dumps(data, indent=4)
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return "AMF", _view_text(s[:limit], len(s), limit)
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class ViewJavaScript:
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name = "JavaScript"
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prompt = ("javascript", "j")
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content_types = [
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"application/x-javascript",
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"application/javascript",
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"text/javascript"
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]
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def __call__(self, hdrs, content, limit):
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opts = jsbeautifier.default_options()
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opts.indent_size = 2
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res = jsbeautifier.beautify(content[:limit], opts)
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return "JavaScript", _view_text(res, len(content), limit)
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class ViewImage:
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name = "Image"
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prompt = ("image", "i")
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content_types = [
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"image/png",
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"image/jpeg",
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"image/gif",
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"image/vnd.microsoft.icon",
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"image/x-icon",
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]
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def __call__(self, hdrs, content, limit):
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try:
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img = Image.open(cStringIO.StringIO(content))
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except IOError:
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return None
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parts = [
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("Format", str(img.format_description)),
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("Size", "%s x %s px"%img.size),
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("Mode", str(img.mode)),
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]
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for i in sorted(img.info.keys()):
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if i != "exif":
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parts.append(
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(str(i), str(img.info[i]))
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)
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if hasattr(img, "_getexif"):
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ex = img._getexif()
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if ex:
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for i in sorted(ex.keys()):
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tag = TAGS.get(i, i)
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parts.append(
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(str(tag), str(ex[i]))
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)
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clean = []
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for i in parts:
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clean.append([netlib.utils.cleanBin(i[0]), netlib.utils.cleanBin(i[1])])
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fmt = common.format_keyvals(
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clean,
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key = "header",
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val = "text"
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)
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return "%s image"%img.format, fmt
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views = [
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ViewAuto(),
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ViewRaw(),
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ViewHex(),
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ViewJSON(),
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ViewXML(),
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ViewHTML(),
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ViewHTMLOutline(),
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ViewJavaScript(),
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ViewURLEncoded(),
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ViewMultipart(),
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ViewImage(),
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]
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if pyamf:
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views.append(ViewAMF())
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content_types_map = {}
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for i in views:
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for ct in i.content_types:
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l = content_types_map.setdefault(ct, [])
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l.append(i)
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view_prompts = [i.prompt for i in views]
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def get_by_shortcut(c):
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for i in views:
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if i.prompt[1] == c:
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return i
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def get(name):
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for i in views:
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if i.name == name:
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return i
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def get_content_view(viewmode, hdrItems, content, limit, logfunc):
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"""
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Returns a (msg, body) tuple.
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"""
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if not content:
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return ("No content", "")
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msg = []
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hdrs = flow.ODictCaseless([list(i) for i in hdrItems])
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enc = hdrs.get_first("content-encoding")
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if enc and enc != "identity":
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decoded = encoding.decode(enc, content)
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if decoded:
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content = decoded
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msg.append("[decoded %s]"%enc)
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try:
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ret = viewmode(hdrs, content, limit)
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# Third-party viewers can fail in unexpected ways...
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except Exception, e:
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s = traceback.format_exc()
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s = "Content viewer failed: \n" + s
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logfunc(s)
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ret = None
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if not ret:
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ret = get("Raw")(hdrs, content, limit)
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msg.append("Couldn't parse: falling back to Raw")
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else:
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msg.append(ret[0])
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return " ".join(msg), ret[1]
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