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pySim.saip: Add ProfileElementRFM class

Change-Id: I547e02c12345932deafa4b914fcaeaa183b69798
---
M pySim/esim/saip/__init__.py
M tests/test_esim_saip.py
2 files changed, 44 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/21/37421/1

diff --git a/pySim/esim/saip/__init__.py b/pySim/esim/saip/__init__.py
index e87e5c0..a71c3c8 100644
--- a/pySim/esim/saip/__init__.py
+++ b/pySim/esim/saip/__init__.py
@@ -553,6 +553,34 @@
                 'uiccToolkitApplicationSpecificParametersField': h2b('01000001000000020112036C756500'),
             }
 
+class ProfileElementRFM(ProfileElement):
+    type = 'rfm'
+
+    def __init__(self, decoded: Optional[dict] = None,
+                 inst_aid: Optional[bytes] = None, sd_aid: Optional[bytes] = None,
+                 adf_aid: Optional[bytes] = None,
+                 tar_list: Optional[List[bytes]] = [], msl: Optional[int] = 0x06):
+        super().__init__()
+        ADM1_ACCESS = h2b('02000100')
+        if decoded:
+            self.decoded = decoded
+            return
+        # provide some reasonable defaults for a MNO-SD
+        self.decoded = OrderedDict()
+        self.decoded['rfm-header'] = { 'mandated': None, 'identification': None}
+        self.decoded['instanceAID'] = inst_aid
+        self.decoded['securityDomainAID'] = sd_aid
+        self.decoded['tarList'] = tar_list
+        self.decoded['minimumSecurityLevel'] = bytes([msl])
+        self.decoded['uiccAccessDomain'] = ADM1_ACCESS
+        self.decoded['uiccAdminAccessDomain'] = ADM1_ACCESS
+        if adf_aid:
+            self.decoded['adfRFMAccess'] = {
+                    'adfAID': aid_rfm,
+                    'adfAccessDomain': ADM1_ACCESS,
+                    'adfAdminAccessDomain': ADM1_ACCESS,
+                }
+
 class ProfileElementUSIM(ProfileElement):
     type = 'usim'
 
diff --git a/tests/test_esim_saip.py b/tests/test_esim_saip.py
index 5a1284e..e87a073 100755
--- a/tests/test_esim_saip.py
+++ b/tests/test_esim_saip.py
@@ -74,6 +74,13 @@
                 pes.append(inst)
                 pes.to_der()
 
+        # RFM requires some constructor arguments
+        cls = ProfileElementRFM
+        with self.subTest(cls.__name__):
+                pes = ProfileElementSequence()
+                inst = cls(inst_aid=b'\x01\x02', sd_aid=b'\x03\x04', tar_list=[b'\x01\x02\x03'])
+                pes.append(inst)
+                pes.to_der()
 
 
 if __name__ == "__main__":

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