mitmproxy/libmproxy/console/grideditor.py
2015-07-08 12:10:03 -03:00

709 lines
19 KiB
Python

from __future__ import absolute_import
import copy
import re
import os
import urwid
from . import common, signals
from .. import utils, filt, script
from netlib import http_uastrings, http_cookies, odict
FOOTER = [
('heading_key', "enter"), ":edit ",
('heading_key', "q"), ":back ",
]
FOOTER_EDITING = [
('heading_key', "esc"), ":stop editing ",
]
class TextColumn:
subeditor = None
def __init__(self, heading):
self.heading = heading
def text(self, obj):
return SEscaped(obj or "")
def blank(self):
return ""
def keypress(self, key, editor):
if key == "r":
if editor.walker.get_current_value() is not None:
signals.status_prompt_path.send(
self,
prompt = "Read file",
callback = editor.read_file
)
elif key == "R":
if editor.walker.get_current_value() is not None:
signals.status_prompt_path.send(
editor,
prompt = "Read unescaped file",
callback = editor.read_file,
args = (True,)
)
elif key == "e":
o = editor.walker.get_current_value()
if o is not None:
n = editor.master.spawn_editor(o.encode("string-escape"))
n = utils.clean_hanging_newline(n)
editor.walker.set_current_value(n, False)
editor.walker._modified()
elif key in ["enter"]:
editor.walker.start_edit()
else:
return key
class SubgridColumn:
def __init__(self, heading, subeditor):
self.heading = heading
self.subeditor = subeditor
def text(self, obj):
p = http_cookies._format_pairs(obj, sep="\n")
return urwid.Text(p)
def blank(self):
return []
def keypress(self, key, editor):
if key in "rRe":
signals.status_message.send(
self,
message = "Press enter to edit this field.",
expire = 1000
)
return
elif key in ["enter"]:
editor.master.view_grideditor(
self.subeditor(
editor.master,
editor.walker.get_current_value(),
editor.set_subeditor_value,
editor.walker.focus,
editor.walker.focus_col
)
)
else:
return key
class SEscaped(urwid.WidgetWrap):
def __init__(self, txt):
txt = txt.encode("string-escape")
w = urwid.Text(txt, wrap="any")
urwid.WidgetWrap.__init__(self, w)
def get_text(self):
return self._w.get_text()[0]
def keypress(self, size, key):
return key
def selectable(self):
return True
class SEdit(urwid.WidgetWrap):
def __init__(self, txt):
txt = txt.encode("string-escape")
w = urwid.Edit(edit_text=txt, wrap="any", multiline=True)
w = urwid.AttrWrap(w, "editfield")
urwid.WidgetWrap.__init__(self, w)
def get_text(self):
return self._w.get_text()[0].strip()
def selectable(self):
return True
class GridRow(urwid.WidgetWrap):
def __init__(self, focused, editing, editor, values):
self.focused, self.editing, self.editor = focused, editing, editor
errors = values[1]
self.fields = []
for i, v in enumerate(values[0]):
if focused == i and editing:
self.editing = SEdit(v)
self.fields.append(self.editing)
else:
w = self.editor.columns[i].text(v)
if focused == i:
if i in errors:
w = urwid.AttrWrap(w, "focusfield_error")
else:
w = urwid.AttrWrap(w, "focusfield")
elif i in errors:
w = urwid.AttrWrap(w, "field_error")
self.fields.append(w)
fspecs = self.fields[:]
if len(self.fields) > 1:
fspecs[0] = ("fixed", self.editor.first_width + 2, fspecs[0])
w = urwid.Columns(
fspecs,
dividechars = 2
)
if focused is not None:
w.set_focus_column(focused)
urwid.WidgetWrap.__init__(self, w)
def get_edit_value(self):
return self.editing.get_text()
def keypress(self, s, k):
if self.editing:
w = self._w.column_widths(s)[self.focused]
k = self.editing.keypress((w,), k)
return k
def selectable(self):
return True
class GridWalker(urwid.ListWalker):
"""
Stores rows as a list of (rows, errors) tuples, where rows is a list
and errors is a set with an entry of each offset in rows that is an
error.
"""
def __init__(self, lst, editor):
self.lst = [(i, set([])) for i in lst]
self.editor = editor
self.focus = 0
self.focus_col = 0
self.editing = False
def _modified(self):
self.editor.show_empty_msg()
return urwid.ListWalker._modified(self)
def add_value(self, lst):
self.lst.append((lst[:], set([])))
self._modified()
def get_current_value(self):
if self.lst:
return self.lst[self.focus][0][self.focus_col]
def set_current_value(self, val, unescaped):
if not unescaped:
try:
val = val.decode("string-escape")
except ValueError:
signals.status_message.send(
self,
message = "Invalid Python-style string encoding.",
expire = 1000
)
return
errors = self.lst[self.focus][1]
emsg = self.editor.is_error(self.focus_col, val)
if emsg:
signals.status_message.send(message = emsg, expire = 1)
errors.add(self.focus_col)
else:
errors.discard(self.focus_col)
self.set_value(val, self.focus, self.focus_col, errors)
def set_value(self, val, focus, focus_col, errors=None):
if not errors:
errors = set([])
row = list(self.lst[focus][0])
row[focus_col] = val
self.lst[focus] = [tuple(row), errors]
self._modified()
def delete_focus(self):
if self.lst:
del self.lst[self.focus]
self.focus = min(len(self.lst) - 1, self.focus)
self._modified()
def _insert(self, pos):
self.focus = pos
self.lst.insert(
self.focus,
[
[c.blank() for c in self.editor.columns], set([])
]
)
self.focus_col = 0
self.start_edit()
def insert(self):
return self._insert(self.focus)
def add(self):
return self._insert(min(self.focus + 1, len(self.lst)))
def start_edit(self):
col = self.editor.columns[self.focus_col]
if self.lst and not col.subeditor:
self.editing = GridRow(
self.focus_col, True, self.editor, self.lst[self.focus]
)
self.editor.master.loop.widget.footer.update(FOOTER_EDITING)
self._modified()
def stop_edit(self):
if self.editing:
self.editor.master.loop.widget.footer.update(FOOTER)
self.set_current_value(self.editing.get_edit_value(), False)
self.editing = False
self._modified()
def left(self):
self.focus_col = max(self.focus_col - 1, 0)
self._modified()
def right(self):
self.focus_col = min(self.focus_col + 1, len(self.editor.columns) - 1)
self._modified()
def tab_next(self):
self.stop_edit()
if self.focus_col < len(self.editor.columns) - 1:
self.focus_col += 1
elif self.focus != len(self.lst) - 1:
self.focus_col = 0
self.focus += 1
self._modified()
def get_focus(self):
if self.editing:
return self.editing, self.focus
elif self.lst:
return GridRow(
self.focus_col,
False,
self.editor,
self.lst[self.focus]
), self.focus
else:
return None, None
def set_focus(self, focus):
self.stop_edit()
self.focus = focus
self._modified()
def get_next(self, pos):
if pos + 1 >= len(self.lst):
return None, None
return GridRow(None, False, self.editor, self.lst[pos + 1]), pos + 1
def get_prev(self, pos):
if pos - 1 < 0:
return None, None
return GridRow(None, False, self.editor, self.lst[pos - 1]), pos - 1
class GridListBox(urwid.ListBox):
def __init__(self, lw):
urwid.ListBox.__init__(self, lw)
FIRST_WIDTH_MAX = 40
FIRST_WIDTH_MIN = 20
class GridEditor(urwid.WidgetWrap):
title = None
columns = None
def __init__(self, master, value, callback, *cb_args, **cb_kwargs):
value = self.data_in(copy.deepcopy(value))
self.master, self.value, self.callback = master, value, callback
self.cb_args, self.cb_kwargs = cb_args, cb_kwargs
first_width = 20
if value:
for r in value:
assert len(r) == len(self.columns)
first_width = max(len(r), first_width)
self.first_width = min(first_width, FIRST_WIDTH_MAX)
title = urwid.Text(self.title)
title = urwid.Padding(title, align="left", width=("relative", 100))
title = urwid.AttrWrap(title, "heading")
headings = []
for i, col in enumerate(self.columns):
c = urwid.Text(col.heading)
if i == 0 and len(self.columns) > 1:
headings.append(("fixed", first_width + 2, c))
else:
headings.append(c)
h = urwid.Columns(
headings,
dividechars = 2
)
h = urwid.AttrWrap(h, "heading")
self.walker = GridWalker(self.value, self)
self.lb = GridListBox(self.walker)
self._w = urwid.Frame(
self.lb,
header = urwid.Pile([title, h])
)
self.master.loop.widget.footer.update("")
self.show_empty_msg()
def show_empty_msg(self):
if self.walker.lst:
self._w.set_footer(None)
else:
self._w.set_footer(
urwid.Text(
[
("highlight", "No values. Press "),
("key", "a"),
("highlight", " to add some."),
]
)
)
def encode(self, s):
if not self.encoding:
return s
try:
return s.encode(self.encoding)
except ValueError:
return None
def read_file(self, p, unescaped=False):
if p:
try:
p = os.path.expanduser(p)
d = file(p, "rb").read()
self.walker.set_current_value(d, unescaped)
self.walker._modified()
except IOError as v:
return str(v)
def set_subeditor_value(self, val, focus, focus_col):
self.walker.set_value(val, focus, focus_col)
def keypress(self, size, key):
if self.walker.editing:
if key in ["esc"]:
self.walker.stop_edit()
elif key == "tab":
pf, pfc = self.walker.focus, self.walker.focus_col
self.walker.tab_next()
if self.walker.focus == pf and self.walker.focus_col != pfc:
self.walker.start_edit()
else:
self._w.keypress(size, key)
return None
key = common.shortcuts(key)
column = self.columns[self.walker.focus_col]
if key in ["q", "esc"]:
res = []
for i in self.walker.lst:
if not i[1] and any([x for x in i[0]]):
res.append(i[0])
self.callback(self.data_out(res), *self.cb_args, **self.cb_kwargs)
signals.pop_view_state.send(self)
elif key == "g":
self.walker.set_focus(0)
elif key == "G":
self.walker.set_focus(len(self.walker.lst) - 1)
elif key in ["h", "left"]:
self.walker.left()
elif key in ["l", "right"]:
self.walker.right()
elif key == "tab":
self.walker.tab_next()
elif key == "a":
self.walker.add()
elif key == "A":
self.walker.insert()
elif key == "d":
self.walker.delete_focus()
elif column.keypress(key, self) and not self.handle_key(key):
return self._w.keypress(size, key)
def data_out(self, data):
"""
Called on raw list data, before data is returned through the
callback.
"""
return data
def data_in(self, data):
"""
Called to prepare provided data.
"""
return data
def is_error(self, col, val):
"""
Return False, or a string error message.
"""
return False
def handle_key(self, key):
return False
def make_help(self):
text = []
text.append(urwid.Text([("text", "Editor control:\n")]))
keys = [
("A", "insert row before cursor"),
("a", "add row after cursor"),
("d", "delete row"),
("e", "spawn external editor on current field"),
("q", "save changes and exit editor"),
("r", "read value from file"),
("R", "read unescaped value from file"),
("esc", "save changes and exit editor"),
("tab", "next field"),
("enter", "edit field"),
]
text.extend(
common.format_keyvals(keys, key="key", val="text", indent=4)
)
text.append(
urwid.Text(
[
"\n",
("text", "Values are escaped Python-style strings.\n"),
]
)
)
return text
class QueryEditor(GridEditor):
title = "Editing query"
columns = [
TextColumn("Key"),
TextColumn("Value")
]
class HeaderEditor(GridEditor):
title = "Editing headers"
columns = [
TextColumn("Key"),
TextColumn("Value")
]
def make_help(self):
h = GridEditor.make_help(self)
text = []
text.append(urwid.Text([("text", "Special keys:\n")]))
keys = [
("U", "add User-Agent header"),
]
text.extend(
common.format_keyvals(keys, key="key", val="text", indent=4)
)
text.append(urwid.Text([("text", "\n")]))
text.extend(h)
return text
def set_user_agent(self, k):
ua = http_uastrings.get_by_shortcut(k)
if ua:
self.walker.add_value(
[
"User-Agent",
ua[2]
]
)
def handle_key(self, key):
if key == "U":
signals.status_prompt_onekey.send(
prompt = "Add User-Agent header:",
keys = [(i[0], i[1]) for i in http_uastrings.UASTRINGS],
callback = self.set_user_agent,
)
return True
class URLEncodedFormEditor(GridEditor):
title = "Editing URL-encoded form"
columns = [
TextColumn("Key"),
TextColumn("Value")
]
class ReplaceEditor(GridEditor):
title = "Editing replacement patterns"
columns = [
TextColumn("Filter"),
TextColumn("Regex"),
TextColumn("Replacement"),
]
def is_error(self, col, val):
if col == 0:
if not filt.parse(val):
return "Invalid filter specification."
elif col == 1:
try:
re.compile(val)
except re.error:
return "Invalid regular expression."
return False
class SetHeadersEditor(GridEditor):
title = "Editing header set patterns"
columns = [
TextColumn("Filter"),
TextColumn("Header"),
TextColumn("Value"),
]
def is_error(self, col, val):
if col == 0:
if not filt.parse(val):
return "Invalid filter specification"
return False
def make_help(self):
h = GridEditor.make_help(self)
text = []
text.append(urwid.Text([("text", "Special keys:\n")]))
keys = [
("U", "add User-Agent header"),
]
text.extend(
common.format_keyvals(keys, key="key", val="text", indent=4)
)
text.append(urwid.Text([("text", "\n")]))
text.extend(h)
return text
def set_user_agent(self, k):
ua = http_uastrings.get_by_shortcut(k)
if ua:
self.walker.add_value(
[
".*",
"User-Agent",
ua[2]
]
)
def handle_key(self, key):
if key == "U":
signals.status_prompt_onekey.send(
prompt = "Add User-Agent header:",
keys = [(i[0], i[1]) for i in http_uastrings.UASTRINGS],
callback = self.set_user_agent,
)
return True
class PathEditor(GridEditor):
title = "Editing URL path components"
columns = [
TextColumn("Component"),
]
def data_in(self, data):
return [[i] for i in data]
def data_out(self, data):
return [i[0] for i in data]
class ScriptEditor(GridEditor):
title = "Editing scripts"
columns = [
TextColumn("Command"),
]
def is_error(self, col, val):
try:
script.Script.parse_command(val)
except script.ScriptError as v:
return str(v)
class HostPatternEditor(GridEditor):
title = "Editing host patterns"
columns = [
TextColumn("Regex (matched on hostname:port / ip:port)")
]
def is_error(self, col, val):
try:
re.compile(val, re.IGNORECASE)
except re.error as e:
return "Invalid regex: %s" % str(e)
def data_in(self, data):
return [[i] for i in data]
def data_out(self, data):
return [i[0] for i in data]
class CookieEditor(GridEditor):
title = "Editing request Cookie header"
columns = [
TextColumn("Name"),
TextColumn("Value"),
]
class CookieAttributeEditor(GridEditor):
title = "Editing Set-Cookie attributes"
columns = [
TextColumn("Name"),
TextColumn("Value"),
]
def data_out(self, data):
ret = []
for i in data:
if not i[1]:
ret.append([i[0], None])
else:
ret.append(i)
return ret
class SetCookieEditor(GridEditor):
title = "Editing response SetCookie header"
columns = [
TextColumn("Name"),
TextColumn("Value"),
SubgridColumn("Attributes", CookieAttributeEditor),
]
def data_in(self, data):
flattened = []
for k, v in data.items():
flattened.append([k, v[0], v[1].lst])
return flattened
def data_out(self, data):
vals = []
for i in data:
vals.append(
[
i[0],
[i[1], odict.ODictCaseless(i[2])]
]
)
return odict.ODict(vals)