laforge has uploaded this change for review. ( https://gerrit.osmocom.org/c/pysim/+/38906?usp=email )

Change subject: esim.saip.File: Re-compute file_size when changing body ......................................................................

esim.saip.File: Re-compute file_size when changing body

If the API user modifies the size of the body, we need to check if we need to re-compute the file_size attribute which is later encoded into the fileDescriptor. The size obviously must be large enough to fit the body. Let's do this implicitly by introducing a setter for File.body

Change-Id: I1a908504b845b7c90f31294faf2a6e988bdd8049 --- M pySim/esim/saip/__init__.py 1 file changed, 20 insertions(+), 2 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/06/38906/1

diff --git a/pySim/esim/saip/__init__.py b/pySim/esim/saip/__init__.py index b83367e..163c91b 100644 --- a/pySim/esim/saip/__init__.py +++ b/pySim/esim/saip/__init__.py @@ -106,7 +106,7 @@ self.pe_name = pename self._name = name self.template = template - self.body: Optional[bytes] = None + self._body: Optional[bytes] = None self.node: Optional['FsNode'] = None self.file_type = None self.fid: Optional[int] = None @@ -191,6 +191,24 @@ # All the files defined in the templates shall have, by default, shareable/not-shareable bit in the file descriptor set to "shareable". self.shareable = True self._template_derived = True + if hasattr(template, 'file_size'): + self._file_size = template.file_size + + def _recompute_size(self): + """recompute the file size, if needed (body larger than current size)""" + body_size = len(self.body) + if self.file_size == None or self.file_size < body_size: + self._file_size = body_size + + @property + def body(self): + return self._body + + @body.setter + def body(self, value: bytes): + self._body = value + # we need to potentially update the file size after changing the body [size] + self._recompute_size()

def to_fileDescriptor(self) -> dict: """Convert from internal representation to 'fileDescriptor' as used by asn1tools for SAIP""" @@ -332,7 +350,7 @@ if fd: self.from_fileDescriptor(dict(fd)) # BODY - self.body = self.file_content_from_tuples(l) + self._body = self.file_content_from_tuples(l)

@staticmethod def path_from_gfm(bin_path: bytes):