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pySim.esim.saip: Fix compatibility with pytohn < 3.11

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In python up to 3.10, the byteorder argument of the int.to_bytes()
method was mandatory, even if the length of the target byte sequence
is 1 and there factually is no byteorder.

https://docs.python.org/3.10/library/stdtypes.html#int.to_bytes
vs
https://docs.python.org/3.11/library/stdtypes.html#int.to_bytes

See also: https://discourse.osmocom.org/t/assistance-required-with-saip-pysim-tool-error-while-adding-applets-to-exiting-upp-der/2413/2

Change-Id: I8ba29d42c8d7bf0a36772cc3370eff1f6afa879f
This commit is contained in:
Harald Welte
2025-12-14 13:57:00 +01:00
parent 572a81f2af
commit 11dfad88e6
1 changed files with 3 additions and 3 deletions
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6
pySim/esim/saip/__init__.py
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@@ -183,7 +183,7 @@ class File:
self.file_type = template.file_type
self.fid = template.fid
self.sfi = template.sfi
self.arr = template.arr.to_bytes(1)
self.arr = template.arr.to_bytes(1, 'big')
if hasattr(template, 'rec_len'):
self.rec_len = template.rec_len
else:
@@ -227,7 +227,7 @@ class File:
fileDescriptor['shortEFID'] = bytes([self.sfi])
if self.df_name:
fileDescriptor['dfName'] = self.df_name
if self.arr and self.arr != self.template.arr.to_bytes(1):
if self.arr and self.arr != self.template.arr.to_bytes(1, 'big'):
fileDescriptor['securityAttributesReferenced'] = self.arr
if self.file_type in ['LF', 'CY']:
fdb_dec['file_type'] = 'working_ef'
@@ -264,7 +264,7 @@ class File:
if self.read_and_update_when_deact:
spfi |= 0x40 # TS 102 222 Table 5
if spfi != 0x00:
pefi['specialFileInformation'] = spfi.to_bytes(1)
pefi['specialFileInformation'] = spfi.to_bytes(1, 'big')
if self.fill_pattern:
if not self.fill_pattern_repeat:
pefi['fillPattern'] = self.fill_pattern