31 Jan
2024
31 Jan
'24
10:45 p.m.
laforge has uploaded this change for review. (
https://gerrit.osmocom.org/c/pysim/+/35762?usp=email )
Change subject: commands.py: Wrap the transport send_apdu* methods
......................................................................
commands.py: Wrap the transport send_apdu* methods
Let's not have higher level code directly call the transports send_apdu*
methods. We do this as a precursor to introducing secure channel
support, where the secure channel driver would add MAC and/or encrypt
APDUs before they are sent to the transport.
Change-Id: I1b870140959aa8241cda2246e74576390123cb2d
---
M pySim-shell.py
M pySim/commands.py
M pySim/euicc.py
M pySim/global_platform.py
M pySim/legacy/cards.py
M pySim/transport/__init__.py
6 files changed, 111 insertions(+), 76 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/62/35762/1
diff --git a/pySim-shell.py b/pySim-shell.py
index 5b80588..70eaee2 100755
--- a/pySim-shell.py
+++ b/pySim-shell.py
@@ -245,7 +245,7 @@
# noted that the apdu command plays an exceptional role since it is the only card
accessing command that
# can be executed without the presence of a runtime state (self.rs) object.
However, this also means that
# self.lchan is also not present (see method equip).
- data, sw = self.card._scc._tp.send_apdu(opts.APDU)
+ data, sw = self.card._scc.send_apdu(opts.APDU)
if data:
self.poutput("SW: %s, RESP: %s" % (sw, data))
else:
diff --git a/pySim/commands.py b/pySim/commands.py
index d785251..878256b 100644
--- a/pySim/commands.py
+++ b/pySim/commands.py
@@ -5,7 +5,7 @@
#
# Copyright (C) 2009-2010 Sylvain Munaut <tnt(a)246tNt.com>
-# Copyright (C) 2010-2023 Harald Welte <laforge(a)gnumonks.org>
+# Copyright (C) 2010-2024 Harald Welte <laforge(a)gnumonks.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
@@ -26,7 +26,7 @@
from construct import *
from pySim.construct import LV
-from pySim.utils import rpad, lpad, b2h, h2b, sw_match, bertlv_encode_len, Hexstr, h2i,
i2h, str_sanitize, expand_hex
+from pySim.utils import rpad, lpad, b2h, h2b, sw_match, bertlv_encode_len, Hexstr, h2i,
i2h, str_sanitize, expand_hex, SwMatchstr
from pySim.utils import Hexstr, SwHexstr, ResTuple
from pySim.exceptions import SwMatchError
from pySim.transport import LinkBase
@@ -100,6 +100,58 @@
else:
return cla_with_lchan(cla, self.lchan_nr)
+ def send_apdu(self, pdu: Hexstr) -> ResTuple:
+ """Sends an APDU and auto fetch response data
+
+ Args:
+ pdu : string of hexadecimal characters (ex. "A0A40000023F00")
+ Returns:
+ tuple(data, sw), where
+ data : string (in hex) of returned data (ex.
"074F4EFFFF")
+ sw : string (in hex) of status word (ex. "9000")
+ """
+ return self._tp.send_apdu(pdu)
+
+ def send_apdu_checksw(self, pdu: Hexstr, sw: SwMatchstr = "9000") ->
ResTuple:
+ """Sends an APDU and check returned SW
+
+ Args:
+ pdu : string of hexadecimal characters (ex. "A0A40000023F00")
+ sw : string of 4 hexadecimal characters (ex. "9000"). The user may
mask out certain
+ digits using a '?' to add some ambiguity if needed.
+ Returns:
+ tuple(data, sw), where
+ data : string (in hex) of returned data (ex.
"074F4EFFFF")
+ sw : string (in hex) of status word (ex. "9000")
+ """
+ return self._tp.send_apdu_checksw(pdu, sw)
+
+ def send_apdu_constr(self, cla: Hexstr, ins: Hexstr, p1: Hexstr, p2: Hexstr,
cmd_constr: Construct,
+ cmd_data: Hexstr, resp_constr: Construct) -> Tuple[dict,
SwHexstr]:
+ """Build and sends an APDU using a 'construct' definition;
parses response.
+
+ Args:
+ cla : string (in hex) ISO 7816 class byte
+ ins : string (in hex) ISO 7816 instruction byte
+ p1 : string (in hex) ISO 7116 Parameter 1 byte
+ p2 : string (in hex) ISO 7116 Parameter 2 byte
+ cmd_cosntr : defining how to generate binary APDU command data
+ cmd_data : command data passed to cmd_constr
+ resp_cosntr : defining how to decode binary APDU response data
+ Returns:
+ Tuple of (decoded_data, sw)
+ """
+ cmd = cmd_constr.build(cmd_data) if cmd_data else ''
+ p3 = i2h([len(cmd)])
+ pdu = ''.join([cla, ins, p1, p2, p3, b2h(cmd)])
+ (data, sw) = self.send_apdu(pdu)
+ if data:
+ # filter the resulting dict to avoid '_io' members inside
+ rsp = filter_dict(resp_constr.parse(h2b(data)))
+ else:
+ rsp = None
+ return (rsp, sw)
+
# Extract a single FCP item from TLV
def __parse_fcp(self, fcp: Hexstr):
# see also: ETSI TS 102 221, chapter 11.1.1.3.1 Response for MF,
@@ -170,8 +222,7 @@
if type(dir_list) is not list:
dir_list = [dir_list]
for i in dir_list:
- data, sw = self._tp.send_apdu(
- self.cla_byte + "a4" + self.sel_ctrl + "02" + i)
+ data, sw = self.send_apdu(self.cla_byte + "a4" + self.sel_ctrl +
"02" + i)
rv.append((data, sw))
if sw != '9000':
return rv
@@ -201,11 +252,11 @@
fid : file identifier as hex string
"""
- return self._tp.send_apdu_checksw(self.cla_byte + "a4" + self.sel_ctrl
+ "02" + fid)
+ return self.send_apdu_checksw(self.cla_byte + "a4" + self.sel_ctrl +
"02" + fid)
def select_parent_df(self) -> ResTuple:
"""Execute SELECT to switch to the parent DF """
- return self._tp.send_apdu_checksw(self.cla_byte + "a4030400")
+ return self.send_apdu_checksw(self.cla_byte + "a4030400")
def select_adf(self, aid: Hexstr) -> ResTuple:
"""Execute SELECT a given Applicaiton ADF.
@@ -215,7 +266,7 @@
"""
aidlen = ("0" + format(len(aid) // 2, 'x'))[-2:]
- return self._tp.send_apdu_checksw(self.cla_byte + "a4" +
"0404" + aidlen + aid)
+ return self.send_apdu_checksw(self.cla_byte + "a4" + "0404" +
aidlen + aid)
def read_binary(self, ef: Path, length: int = None, offset: int = 0) -> ResTuple:
"""Execute READD BINARY.
@@ -240,7 +291,7 @@
pdu = self.cla_byte + \
'b0%04x%02x' % (offset + chunk_offset, chunk_len)
try:
- data, sw = self._tp.send_apdu_checksw(pdu)
+ data, sw = self.send_apdu_checksw(pdu)
except Exception as e:
raise ValueError('%s, failed to read (offset %d)' %
(str_sanitize(str(e)), offset))
@@ -300,7 +351,7 @@
'd6%04x%02x' % (offset + chunk_offset, chunk_len) + \
data[chunk_offset*2: (chunk_offset+chunk_len)*2]
try:
- chunk_data, chunk_sw = self._tp.send_apdu_checksw(pdu)
+ chunk_data, chunk_sw = self.send_apdu_checksw(pdu)
except Exception as e:
raise ValueError('%s, failed to write chunk (chunk_offset %d,
chunk_len %d)' %
(str_sanitize(str(e)), chunk_offset, chunk_len))
@@ -320,7 +371,7 @@
r = self.select_path(ef)
rec_length = self.__record_len(r)
pdu = self.cla_byte + 'b2%02x04%02x' % (rec_no, rec_length)
- return self._tp.send_apdu_checksw(pdu)
+ return self.send_apdu_checksw(pdu)
def __verify_record(self, ef: Path, rec_no: int, data: str):
"""Verify record against given data
@@ -383,7 +434,7 @@
pass
pdu = (self.cla_byte + 'dc%02x04%02x' % (rec_no, rec_length)) + data
- res = self._tp.send_apdu_checksw(pdu)
+ res = self.send_apdu_checksw(pdu)
if verify:
self.__verify_record(ef, rec_no, data)
return res
@@ -421,7 +472,7 @@
pdu = self.cla4lchan('80') + 'cb008001%02x' % (tag)
else:
pdu = self.cla4lchan('80') + 'cb000000'
- return self._tp.send_apdu_checksw(pdu)
+ return self.send_apdu_checksw(pdu)
def retrieve_data(self, ef: Path, tag: int) -> ResTuple:
"""Execute RETRIEVE DATA, see also TS 102 221 Section 11.3.1.
@@ -451,7 +502,7 @@
if isinstance(data, bytes) or isinstance(data, bytearray):
data = b2h(data)
pdu = self.cla4lchan('80') + 'db00%02x%02x%s' % (p1,
len(data)//2, data)
- return self._tp.send_apdu_checksw(pdu)
+ return self.send_apdu_checksw(pdu)
def set_data(self, ef, tag: int, value: str, verify: bool = False, conserve: bool =
False) -> ResTuple:
"""Execute SET DATA.
@@ -493,7 +544,7 @@
if len(rand) != 32:
raise ValueError('Invalid rand')
self.select_path(['3f00', '7f20'])
- return self._tp.send_apdu_checksw(self.cla4lchan('a0') +
'88000010' + rand, sw='9000')
+ return self.send_apdu_checksw(self.cla4lchan('a0') + '88000010' +
rand, sw='9000')
def authenticate(self, rand: Hexstr, autn: Hexstr, context: str = '3g') ->
ResTuple:
"""Execute AUTHENTICATE (USIM/ISIM).
@@ -515,7 +566,7 @@
p2 = '81'
elif context == 'gsm':
p2 = '80'
- (data, sw) = self._tp.send_apdu_constr_checksw(
+ (data, sw) = self.send_apdu_constr_checksw(
self.cla_byte, '88', '00', p2, AuthCmd3G, cmd_data,
AuthResp3G)
if 'auts' in data:
ret = {'synchronisation_failure': data}
@@ -525,11 +576,11 @@
def status(self) -> ResTuple:
"""Execute a STATUS command as per TS 102 221 Section
11.1.2."""
- return self._tp.send_apdu_checksw(self.cla4lchan('80') +
'F20000ff')
+ return self.send_apdu_checksw(self.cla4lchan('80') + 'F20000ff')
def deactivate_file(self) -> ResTuple:
"""Execute DECATIVATE FILE command as per TS 102 221 Section
11.1.14."""
- return self._tp.send_apdu_constr_checksw(self.cla_byte, '04',
'00', '00', None, None, None)
+ return self.send_apdu_constr_checksw(self.cla_byte, '04', '00',
'00', None, None, None)
def activate_file(self, fid: Hexstr) -> ResTuple:
"""Execute ACTIVATE FILE command as per TS 102 221 Section
11.1.15.
@@ -537,31 +588,31 @@
Args:
fid : file identifier as hex string
"""
- return self._tp.send_apdu_checksw(self.cla_byte + '44000002' + fid)
+ return self.send_apdu_checksw(self.cla_byte + '44000002' + fid)
def create_file(self, payload: Hexstr) -> ResTuple:
"""Execute CREEATE FILE command as per TS 102 222 Section
6.3"""
- return self._tp.send_apdu_checksw(self.cla_byte + 'e00000%02x%s' %
(len(payload)//2, payload))
+ return self.send_apdu_checksw(self.cla_byte + 'e00000%02x%s' %
(len(payload)//2, payload))
def resize_file(self, payload: Hexstr) -> ResTuple:
"""Execute RESIZE FILE command as per TS 102 222 Section
6.10"""
- return self._tp.send_apdu_checksw(self.cla4lchan('80') +
'd40000%02x%s' % (len(payload)//2, payload))
+ return self.send_apdu_checksw(self.cla4lchan('80') +
'd40000%02x%s' % (len(payload)//2, payload))
def delete_file(self, fid: Hexstr) -> ResTuple:
"""Execute DELETE FILE command as per TS 102 222 Section
6.4"""
- return self._tp.send_apdu_checksw(self.cla_byte + 'e4000002' + fid)
+ return self.send_apdu_checksw(self.cla_byte + 'e4000002' + fid)
def terminate_df(self, fid: Hexstr) -> ResTuple:
"""Execute TERMINATE DF command as per TS 102 222 Section
6.7"""
- return self._tp.send_apdu_checksw(self.cla_byte + 'e6000002' + fid)
+ return self.send_apdu_checksw(self.cla_byte + 'e6000002' + fid)
def terminate_ef(self, fid: Hexstr) -> ResTuple:
"""Execute TERMINATE EF command as per TS 102 222 Section
6.8"""
- return self._tp.send_apdu_checksw(self.cla_byte + 'e8000002' + fid)
+ return self.send_apdu_checksw(self.cla_byte + 'e8000002' + fid)
def terminate_card_usage(self) -> ResTuple:
"""Execute TERMINATE CARD USAGE command as per TS 102 222 Section
6.9"""
- return self._tp.send_apdu_checksw(self.cla_byte + 'fe000000')
+ return self.send_apdu_checksw(self.cla_byte + 'fe000000')
def manage_channel(self, mode: str = 'open', lchan_nr: int =0) ->
ResTuple:
"""Execute MANAGE CHANNEL command as per TS 102 221 Section
11.1.17.
@@ -575,7 +626,7 @@
else:
p1 = 0x00
pdu = self.cla_byte + '70%02x%02x00' % (p1, lchan_nr)
- return self._tp.send_apdu_checksw(pdu)
+ return self.send_apdu_checksw(pdu)
def reset_card(self) -> Hexstr:
"""Physically reset the card"""
@@ -596,8 +647,7 @@
code : chv code as hex string
"""
fc = rpad(b2h(code), 16)
- data, sw = self._tp.send_apdu(
- self.cla_byte + '2000' + ('%02X' % chv_no) + '08' +
fc)
+ data, sw = self.send_apdu(self.cla_byte + '2000' + ('%02X' %
chv_no) + '08' + fc)
self._chv_process_sw('verify', chv_no, code, sw)
return (data, sw)
@@ -610,8 +660,7 @@
pin_code : new chv code as hex string
"""
fc = rpad(b2h(puk_code), 16) + rpad(b2h(pin_code), 16)
- data, sw = self._tp.send_apdu(
- self.cla_byte + '2C00' + ('%02X' % chv_no) + '10' +
fc)
+ data, sw = self.send_apdu(self.cla_byte + '2C00' + ('%02X' %
chv_no) + '10' + fc)
self._chv_process_sw('unblock', chv_no, pin_code, sw)
return (data, sw)
@@ -624,8 +673,7 @@
new_pin_code : new chv code as hex string
"""
fc = rpad(b2h(pin_code), 16) + rpad(b2h(new_pin_code), 16)
- data, sw = self._tp.send_apdu(
- self.cla_byte + '2400' + ('%02X' % chv_no) + '10' +
fc)
+ data, sw = self.send_apdu(self.cla_byte + '2400' + ('%02X' %
chv_no) + '10' + fc)
self._chv_process_sw('change', chv_no, pin_code, sw)
return (data, sw)
@@ -638,8 +686,7 @@
new_pin_code : new chv code as hex string
"""
fc = rpad(b2h(pin_code), 16)
- data, sw = self._tp.send_apdu(
- self.cla_byte + '2600' + ('%02X' % chv_no) + '08' +
fc)
+ data, sw = self.send_apdu(self.cla_byte + '2600' + ('%02X' %
chv_no) + '08' + fc)
self._chv_process_sw('disable', chv_no, pin_code, sw)
return (data, sw)
@@ -651,8 +698,7 @@
pin_code : chv code as hex string
"""
fc = rpad(b2h(pin_code), 16)
- data, sw = self._tp.send_apdu(
- self.cla_byte + '2800' + ('%02X' % chv_no) + '08' +
fc)
+ data, sw = self.send_apdu(self.cla_byte + '2800' + ('%02X' %
chv_no) + '08' + fc)
self._chv_process_sw('enable', chv_no, pin_code, sw)
return (data, sw)
@@ -662,7 +708,7 @@
Args:
payload : payload as hex string
"""
- return self._tp.send_apdu_checksw('80c20000%02x%s' % (len(payload)//2,
payload))
+ return self.send_apdu_checksw('80c20000%02x%s' % (len(payload)//2,
payload))
def terminal_profile(self, payload: Hexstr) -> ResTuple:
"""Send TERMINAL PROFILE to card
@@ -671,7 +717,7 @@
payload : payload as hex string
"""
data_length = len(payload) // 2
- data, sw = self._tp.send_apdu(('80100000%02x' % data_length) + payload)
+ data, sw = self.send_apdu(('80100000%02x' % data_length) + payload)
return (data, sw)
# ETSI TS 102 221 11.1.22
@@ -711,8 +757,7 @@
raise ValueError('Time unit must be 0x00..0x04')
min_dur_enc = encode_duration(min_len_secs)
max_dur_enc = encode_duration(max_len_secs)
- data, sw = self._tp.send_apdu_checksw(
- '8076000004' + min_dur_enc + max_dur_enc)
+ data, sw = self.send_apdu_checksw('8076000004' + min_dur_enc +
max_dur_enc)
negotiated_duration_secs = decode_duration(data[:4])
resume_token = data[4:]
return (negotiated_duration_secs, resume_token, sw)
@@ -722,14 +767,14 @@
"""Send SUSPEND UICC (resume) to the card."""
if len(h2b(token)) != 8:
raise ValueError("Token must be 8 bytes long")
- data, sw = self._tp.send_apdu_checksw('8076010008' + token)
+ data, sw = self.send_apdu_checksw('8076010008' + token)
return (data, sw)
def get_data(self, tag: int, cla: int = 0x00):
- data, sw = self._tp.send_apdu('%02xca%04x00' % (cla, tag))
+ data, sw = self.send_apdu('%02xca%04x00' % (cla, tag))
return (data, sw)
# TS 31.102 Section 7.5.2
def get_identity(self, context: int) -> Tuple[Hexstr, SwHexstr]:
- data, sw = self._tp.send_apdu_checksw('807800%02x00' % (context))
+ data, sw = self.send_apdu_checksw('807800%02x00' % (context))
return (data, sw)
diff --git a/pySim/euicc.py b/pySim/euicc.py
index e249f4f..068fb72 100644
--- a/pySim/euicc.py
+++ b/pySim/euicc.py
@@ -319,7 +319,7 @@
"""Perform STORE DATA according to Table 47+48 in Section 5.7.2 of
SGP.22.
Only single-block store supported for now."""
capdu = '%sE29100%02x%s' % (scc.cla4lchan('80'), len(tx_do)//2,
tx_do)
- return scc._tp.send_apdu_checksw(capdu)
+ return scc.send_apdu_checksw(capdu)
@staticmethod
def store_data_tlv(scc: SimCardCommands, cmd_do, resp_cls, exp_sw='9000'):
diff --git a/pySim/global_platform.py b/pySim/global_platform.py
index 347399b..6793f71 100644
--- a/pySim/global_platform.py
+++ b/pySim/global_platform.py
@@ -495,7 +495,7 @@
{'last_block': len(remainder) == 0,
'encryption': encryption,
'structure': structure,
'response': response_permitted})
hdr = "80E2%02x%02x%02x" % (p1b[0], block_nr, len(chunk))
- data, sw = self._cmd.lchan.scc._tp.send_apdu_checksw(hdr + b2h(chunk))
+ data, sw = self._cmd.lchan.scc.send_apdu_checksw(hdr + b2h(chunk))
block_nr += 1
response += data
return data
@@ -532,7 +532,7 @@
else:
kcv = ''
kdb.append({'key_type': opts.key_type[i], 'kcb':
opts.key_data[i], 'kcv': kcv})
- return self.put_key(opts.old_key_version_nr, opts.key_version_nr,
opts.key_id, kdb)
+ self.put_key(opts.old_key_version_nr, opts.key_version_nr, opts.key_id, kdb)
# Table 11-68: Key Data Field - Format 1 (Basic Format)
KeyDataBasic = GreedyRange(Struct('key_type'/KeyType,
@@ -544,7 +544,7 @@
See GlobalPlatform CardSpecification v2.3 Section 11.8 for
details."""
key_data = kvn.to_bytes(1, 'big') +
build_construct(ADF_SD.AddlShellCommands.KeyDataBasic, key_dict)
hdr = "80D8%02x%02x%02x" % (old_kvn, kid, len(key_data))
- data, sw = self._cmd.lchan.scc._tp.send_apdu_checksw(hdr + b2h(key_data))
+ data, sw = self._cmd.lchan.scc.send_apdu_checksw(hdr + b2h(key_data))
return data
get_status_parser = argparse.ArgumentParser()
@@ -569,7 +569,7 @@
grd_list = []
while True:
hdr = "80F2%s%02x%02x" % (subset_hex, p2, len(cmd_data))
- data, sw = self._cmd.lchan.scc._tp.send_apdu(hdr + b2h(cmd_data))
+ data, sw = self._cmd.lchan.scc.send_apdu(hdr + b2h(cmd_data))
remainder = h2b(data)
while len(remainder):
# tlv sequence, each element is one GpRegistryRelatedData()
diff --git a/pySim/legacy/cards.py b/pySim/legacy/cards.py
index 9d1e2c1..5e64e95 100644
--- a/pySim/legacy/cards.py
+++ b/pySim/legacy/cards.py
@@ -753,7 +753,7 @@
# Set the Ki using proprietary command
pdu = '80d4020010' + p['ki']
- data, sw = self._scc._tp.send_apdu(pdu)
+ data, sw = self._scc.send_apdu(pdu)
# EF.HPLMN
r = self._scc.select_path(['3f00', '7f20', '6f30'])
@@ -803,7 +803,7 @@
# TODO: check if verify_chv could be used or what it needs
# self._scc.verify_chv(0x0A, [0x33,0x32,0x32,0x31,0x33,0x32,0x33,0x32])
# Unlock the card..
- data, sw = self._scc._tp.send_apdu_checksw(
+ data, sw = self._scc.send_apdu_checksw(
"0020000A083332323133323332")
# TODO: move into SimCardCommands
@@ -812,7 +812,7 @@
enc_iccid(p['iccid']) + # 10b ICCID
enc_imsi(p['imsi']) # 9b IMSI_len + id_type(9) + IMSI
)
- data, sw = self._scc._tp.send_apdu_checksw("0099000033" + par)
+ data, sw = self._scc.send_apdu_checksw("0099000033" + par)
class SysmoSIMgr2(SimCard):
@@ -851,7 +851,7 @@
pin = h2b("4444444444444444")
pdu = 'A0D43A0508' + b2h(pin)
- data, sw = self._scc._tp.send_apdu(pdu)
+ data, sw = self._scc.send_apdu(pdu)
# authenticate as ADM (enough to write file, and can set PINs)
diff --git a/pySim/transport/__init__.py b/pySim/transport/__init__.py
index 59d4554..772b046 100644
--- a/pySim/transport/__init__.py
+++ b/pySim/transport/__init__.py
@@ -245,30 +245,6 @@
rsp = None
return (rsp, sw)
- def send_apdu_constr_checksw(self, cla: Hexstr, ins: Hexstr, p1: Hexstr, p2: Hexstr,
- cmd_constr: Construct, cmd_data: Hexstr, resp_constr:
Construct,
- sw_exp: SwMatchstr="9000") -> Tuple[dict,
SwHexstr]:
- """Build and sends an APDU using a 'construct' definition;
parses response.
-
- Args:
- cla : string (in hex) ISO 7816 class byte
- ins : string (in hex) ISO 7816 instruction byte
- p1 : string (in hex) ISO 7116 Parameter 1 byte
- p2 : string (in hex) ISO 7116 Parameter 2 byte
- cmd_cosntr : defining how to generate binary APDU command data
- cmd_data : command data passed to cmd_constr
- resp_cosntr : defining how to decode binary APDU response data
- exp_sw : string (in hex) of status word (ex. "9000")
- Returns:
- Tuple of (decoded_data, sw)
- """
- (rsp, sw) = self.send_apdu_constr(cla, ins,
- p1, p2, cmd_constr, cmd_data, resp_constr)
- if not sw_match(sw, sw_exp):
- raise SwMatchError(sw, sw_exp.lower(), self.sw_interpreter)
- return (rsp, sw)
-
-
def argparse_add_reader_args(arg_parser: argparse.ArgumentParser):
"""Add all reader related arguments to the given
argparse.Argumentparser instance."""
from pySim.transport.serial import SerialSimLink
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