laforge has submitted this change. ( https://gerrit.osmocom.org/c/pysim/+/37655?usp=email )

Change subject: pySim.esim.saip: Initial support for parsing GenericFileManagement ......................................................................

pySim.esim.saip: Initial support for parsing GenericFileManagement

Change-Id: I4a92f5849158a59f6acca05121d38adc0a495906 --- M pySim/esim/saip/__init__.py 1 file changed, 65 insertions(+), 0 deletions(-)

Approvals: Jenkins Builder: Verified laforge: Looks good to me, approved

diff --git a/pySim/esim/saip/__init__.py b/pySim/esim/saip/__init__.py index c76cb5c..6cddf3e 100644 --- a/pySim/esim/saip/__init__.py +++ b/pySim/esim/saip/__init__.py @@ -153,6 +153,10 @@ self.fileDescriptor.update(dict(fd)) self.stream = self.linearize_file_content(l)

+ def from_gfm(self, d: Dict): + print(d) + # FIXME + def to_tuples(self) -> List[Tuple]: """Generate a list of fileDescriptor, fillFileContent, fillFileOffset tuples into this instance.""" raise NotImplementedError @@ -277,6 +281,7 @@ 'opt-isim': ProfileElementOptISIM, 'akaParameter': ProfileElementAKA, 'header': ProfileElementHeader, + 'genericFileManagement': ProfileElementGFM, 'end': ProfileElementEnd, } """Construct an instance from given raw, DER encoded bytes.""" @@ -342,6 +347,57 @@ #self.files2pe() pass

+class ProfileElementGFM(ProfileElement): + type = 'genericFileManagement' + + def __init__(self, decoded = None, mandated: bool = True): + super().__init__(decoded, mandated) + # indexed by PE-Name + self.files = {} + self.tdef = asn1.types['ProfileElement'].type.name_to_member[self.type] + + def add_file(self, path, file: File): + # FIXME: proper FS hiearchy + #if path in self.files: + # raise KeyError('Cannot add file: path %s already exists' % path) + self.files[path] = file + + def pe2files(self): + """Update the "files" member with the contents of the "decoded" member.""" + def perform(self, path, file_elements): + if len(file_elements): + file = File('', file_elements) + self.add_file(path, file) + + path = "3f00" # current DF: MF + file_elements = [] + # looks like TCA added one level too much in the ASN.1 hierarchy here + for fmc in self.decoded['fileManagementCMD']: + for fmc2 in fmc: + if fmc2[0] == 'filePath': + # selecting a new path means we're done with the previous file + perform(self, path, file_elements) + if fmc2[1] == "": + path = "3f00" + else: + # FIXME + pass + elif fmc2[0] == 'createFCP': + # new FCP means new file; perform the old one + perform(self, path, file_elements) + file_elements = [('fileDescriptor', fmc2[1])] + elif fmc2[0] == 'fillFileOffset' or fmc2[0] == 'fillFileContent': + file_elements.append(fmc2) + else: + raise ValueError("Unknown GFM choice '%s'" % fmc2[0]) + # add the last file, if we still have any pending data in file_elements + perform(self, path, file_elements) + + def _post_decode(self): + # not entirely sure about this automatism + self.pe2files() + + class ProfileElementMF(FsProfileElement): type = 'mf'