pySim-read.py: Enable reading of EF.IMPU from ISIM

IMS public user identity (IMPU)
As per TS1.103, this EF contains one or more records, with each record able
to hold a public SIP Identity (SIP URI) of the user. EF.IMPI consist of URI TLV data
object values see IETF RFC 3261. The URI shall be encoded to an octet string according
to UTF-8 encoding rules as specified in IETF RFC 3629

Reading of EF.IMPU is achieved by first selecting the ISIM application using its AID.
This is followed by selecting EF.IMPU with File ID - 6f04 in ADF.ISIM

Change-Id: Icf78a564aeaf4254658d3b018ff57dfc4b987e6f
This commit is contained in:
Supreeth Herle 2020-03-26 09:00:06 +01:00 committed by herlesupreeth
parent 3f67f9c1d3
commit 0c02d8a57b
3 changed files with 32 additions and 0 deletions

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@ -326,6 +326,14 @@ if __name__ == '__main__':
except Exception as e:
print("IMS private user identity: Can't read file -- " + str(e))
# EF.IMPU - IMS public user identity
try:
if card.file_exists(EF_ISIM_ADF_map['IMPU']):
res = card.read_impu()
print("IMS public user identity:\n%s" % (len(res) and res or '\tNot available\n',))
except Exception as e:
print("IMS public user identity: Can't read file -- " + str(e))
# Check whether we have th AID of ISIM, if so select it by its AID
# EF.IST - File Id in ADF ISIM : 6f07
if '9000' == card.select_adf_by_aid(adf="isim"):

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@ -385,6 +385,20 @@ class IsimCard(Card):
else:
return (None, sw)
def read_impu(self):
rec_cnt = self._scc.record_count(EF_ISIM_ADF_map['IMPU'])
impu_recs = ""
for i in range(0, rec_cnt):
(res, sw) = self._scc.read_record(EF_ISIM_ADF_map['IMPU'], i + 1)
if sw == '9000':
# Skip the inital tag value ('80') byte and get length of contents
length = int(res[2:4], 16)
content = h2s(res[4:4+(length*2)])
impu_recs += "\t%s\n" % (len(content) and content or 'Not available')
else:
impu_recs += "IMS public user identity: Can't read, response code = %s\n" % (sw)
return impu_recs
class _MagicSimBase(Card):
"""

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@ -184,6 +184,16 @@ P-CSCF:
Home Network Domain Name: Not available
IMS private user identity: Not available
IMS public user identity:
Not available
Not available
Not available
Not available
Not available
Not available
Not available
Not available
ISIM Service Table: 190200
Service 1 - P-CSCF address
Service 4 - GBA-based Local Key Establishment Mechanism