31 Mar
2025
31 Mar
'25
5 p.m.
dexter has uploaded this change for review. (
https://gerrit.osmocom.org/c/pysim/+/39883?usp=email )
Change subject: saip-tool: add ProfileElement class for application PE
......................................................................
saip-tool: add ProfileElement class for application PE
The application profile element has no ProfileElement class yet, so
let's create a ProfileElementApplication class and move the existing
extract-apps code into a method of ProfileElementApplication.
Change-Id: Iaa43036d388fbf1714c53cab1fc21092c4667a21
---
M contrib/saip-tool.py
M pySim/esim/saip/__init__.py
2 files changed, 26 insertions(+), 11 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/83/39883/1
diff --git a/contrib/saip-tool.py b/contrib/saip-tool.py
index 64aba93..4747ab9 100755
--- a/contrib/saip-tool.py
+++ b/contrib/saip-tool.py
@@ -19,14 +19,12 @@
import sys
import argparse
import logging
-import zipfile
from pathlib import Path as PlPath
from typing import List
from osmocom.utils import h2b, b2h, swap_nibbles
from pySim.esim.saip import *
from pySim.esim.saip.validation import CheckBasicStructure
-from pySim import javacard
from pySim.pprint import HexBytesPrettyPrinter
pp = HexBytesPrettyPrinter(indent=4,width=500)
@@ -231,16 +229,9 @@
apps = pes.pe_by_type.get('application', [])
for app_pe in apps:
package_aid = b2h(app_pe.decoded['loadBlock']['loadPackageAID'])
-
fname = os.path.join(opts.output_dir, '%s-%s.%s' % (pes.iccid,
package_aid, opts.format))
- load_block_obj = app_pe.decoded['loadBlock']['loadBlockObject']
print("Writing Load Package AID: %s to file %s" % (package_aid,
fname))
- if opts.format == 'ijc':
- with open(fname, 'wb') as f:
- f.write(load_block_obj)
- else:
- with io.BytesIO(load_block_obj) as f, zipfile.ZipFile(fname, 'w') as
z:
- javacard.ijc_to_cap(f, z, package_aid)
+ app_pe.to_file(fname)
def do_tree(pes:ProfileElementSequence, opts):
pes.mf.print_tree()
diff --git a/pySim/esim/saip/__init__.py b/pySim/esim/saip/__init__.py
index 64ea7cb..d6b41ba 100644
--- a/pySim/esim/saip/__init__.py
+++ b/pySim/esim/saip/__init__.py
@@ -22,6 +22,8 @@
from typing import Tuple, List, Optional, Dict, Union
from collections import OrderedDict
import asn1tools
+import zipfile
+from pySim import javacard
from osmocom.utils import b2h, h2b, Hexstr
from osmocom.tlv import BER_TLV_IE, bertlv_parse_tag, bertlv_parse_len
from osmocom.construct import build_construct, parse_construct, GreedyInteger
@@ -506,7 +508,7 @@
# TODO: cdmaParameter
'securityDomain': ProfileElementSD,
'rfm': ProfileElementRFM,
- # TODO: application
+ 'application': ProfileElementApplication,
# TODO: nonStandard
'end': ProfileElementEnd,
'mf': ProfileElementMF,
@@ -1087,6 +1089,28 @@
'uiccToolkitApplicationSpecificParametersField':
h2b('01000001000000020112036C756500'),
}
+class ProfileElementApplication(ProfileElement):
+ """Class representing an application
ProfileElement."""
+ type = 'application'
+
+ def __init__(self, decoded: Optional[dict] = None, **kwargs):
+ super().__init__(decoded, **kwargs)
+
+ def to_file(self, filename:str):
+ """Write loadBlockObject contents of application ProfileElement to
a .cap or .ijc file."""
+
+ load_package_aid =
b2h(self.decoded['loadBlock']['loadPackageAID'])
+ load_block_object = self.decoded['loadBlock']['loadBlockObject']
+
+ if filename.lower().endswith('.cap'):
+ with io.BytesIO(load_block_object) as f, zipfile.ZipFile(filename,
'w') as z:
+ javacard.ijc_to_cap(f, z, load_package_aid)
+ elif filename.lower().endswith('.ijc'):
+ with open(filename, 'wb') as f:
+ f.write(load_block_object)
+ else:
+ raise ValueError('Invalid file type, file must either .cap or .ijc')
+
class ProfileElementRFM(ProfileElement):
type = 'rfm'
--
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Gerrit-MessageType: newchange
Gerrit-Project: pysim
Gerrit-Branch: master
Gerrit-Change-Id: Iaa43036d388fbf1714c53cab1fc21092c4667a21
Gerrit-Change-Number: 39883
Gerrit-PatchSet: 1
Gerrit-Owner: dexter <pmaier(a)sysmocom.de>