laforge has uploaded this change for review. ( https://gerrit.osmocom.org/c/pysim/+/35748?usp=email ) Change subject: osmo-smdpp: Support multiple different profiles ...................................................................... osmo-smdpp: Support multiple different profiles Let's simply use the matchingId for filesystem lookup of the UPP file. This way we can have any number of profiles by simply creating the respeective files. Change-Id: I0bc3a14b9fdfcc6322917dd0c69d8295de486950 --- M docs/osmo-smdpp.rst M osmo-smdpp.py R smdpp-data/upp/TS48v2_SAIP2.1_NoBERTLV.der R smdpp-data/upp/TS48v2_SAIP2.3_NoBERTLV.der 4 files changed, 42 insertions(+), 4 deletions(-) git pull ssh://gerrit.osmocom.org:29418/pysim refs/changes/48/35748/1 diff --git a/docs/osmo-smdpp.rst b/docs/osmo-smdpp.rst index a84ebee..ad7d902 100644 --- a/docs/osmo-smdpp.rst +++ b/docs/osmo-smdpp.rst @@ -21,8 +21,9 @@ * uses test certificates copied from GSMA SGP.26 into `./smdpp-data/certs`, assuming that your osmo-smdppp would be running at the host name `testsmdpplus1.example.com` -* always provides the exact same profile to every request. The profile always has the same IMSI and - ICCID. +* doesn't understand profile state. Any profile can always be downloaded any number of times, irrespective + of the EID or whether it was donwloaded before +* doesn't perform any personalization, so the IMSI/ICCID etc. are always identical * **is absolutely insecure**, as it * does not perform any certificate verification @@ -83,7 +84,8 @@ The `smdpp-data/certs`` directory contains the DPtls, DPauth and DPpb as well as CI certificates used; they are copied from GSMA SGP.26 v2. -The `smdpp-data/upp` directory contains the UPP (Unprotected Profile Package) used. +The `smdpp-data/upp` directory contains the UPP (Unprotected Profile Package) used. The file names (without +.der suffix) are looked up by the matchingID parameter from the activation code presented by the LPA. DNS setup for your LPA diff --git a/osmo-smdpp.py b/osmo-smdpp.py index cfcd5f8..8cb0082 100755 --- a/osmo-smdpp.py +++ b/osmo-smdpp.py @@ -135,6 +135,7 @@ def __init__(self, server_hostname: str, ci_certs_path: str, use_brainpool: bool = False): self.server_hostname = server_hostname + self.upp_dir = os.path.realpath(os.path.join(DATA_DIR, 'upp')) self.ci_certs = self.load_certs_from_path(ci_certs_path) # load DPauth cert + key self.dp_auth = CertAndPrivkey(oid.id_rspRole_dp_auth_v2) @@ -344,6 +345,27 @@ if euiccSigned1['serverChallenge'] != ss.serverChallenge: raise ApiError('8.1', '6.1', 'Verification failed') + # If ctxParams1 contains a ctxParamsForCommonAuthentication data object, the SM-DP+ Shall [...] + # TODO: We really do a very simplistic job here, this needs to be properly implemented later, + # considering all the various cases, profile state, etc. + if euiccSigned1['ctxParams1'][0] == 'ctxParamsForCommonAuthentication': + cpca = euiccSigned1['ctxParams1'][1] + matchingId = cpca.get('matchingId', None) + if not matchingId: + # TODO: check if any pending profile downloads for the EID + raise ApiError('8.2.6', '3.8', 'Refused') + if matchingId: + # look up profile based on matchingID. We simply check if a given file exists for now.. + path = os.path.join(self.upp_dir, matchingId) + '.der' + # prevent directory traversal attack + if os.path.commonprefix((os.path.realpath(path),self.upp_dir)) != self.upp_dir: + raise ApiError('8.2.6', '3.8', 'Refused') + if not os.path.isfile(path) or not os.access(path, os.R_OK): + raise ApiError('8.2.6', '3.8', 'Refused') + ss.matchingId = matchingId + + # FIXME: we actually want to perform the profile binding herr, and read the profile metadat from the profile + # Put together profileMetadata + _bin ss.profileMetadata = ProfileMetadata(iccid_bin= h2b(swap_nibbles('89000123456789012358')), spn="OsmocomSPN", profile_name="OsmocomProfile") profileMetadata_bin = ss.profileMetadata.gen_store_metadata_request() @@ -425,7 +447,7 @@ # TODO: Check if this order requires a Confirmation Code verification # Perform actual protection + binding of profile package (or return pre-bound one) - with open(os.path.join(DATA_DIR, 'upp', 'TS48 V2 eSIM_GTP_SAIP2.1_NoBERTLV.rename2der'), 'rb') as f: + with open(os.path.join(self.upp_dir, ss.matchingId)+'.der', 'rb') as f: upp = UnprotectedProfilePackage.from_der(f.read(), metadata=ss.profileMetadata) # HACK: Use empty PPP as we're still debuggin the configureISDP step, and we want to avoid # cluttering the log with stuff happening after the failure diff --git a/smdpp-data/upp/TS48 V2 eSIM_GTP_SAIP2.1_NoBERTLV.rename2der b/smdpp-data/upp/TS48v2_SAIP2.1_NoBERTLV.der similarity index 100% rename from smdpp-data/upp/TS48 V2 eSIM_GTP_SAIP2.1_NoBERTLV.rename2der rename to smdpp-data/upp/TS48v2_SAIP2.1_NoBERTLV.der Binary files differ diff --git a/smdpp-data/upp/TS48 V2 eSIM_GTP_SAIP2.3_NoBERTLV.rename2der b/smdpp-data/upp/TS48v2_SAIP2.3_NoBERTLV.der similarity index 100% rename from smdpp-data/upp/TS48 V2 eSIM_GTP_SAIP2.3_NoBERTLV.rename2der rename to smdpp-data/upp/TS48v2_SAIP2.3_NoBERTLV.der Binary files differ -- To view, visit https://gerrit.osmocom.org/c/pysim/+/35748?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: pysim Gerrit-Branch: master Gerrit-Change-Id: I0bc3a14b9fdfcc6322917dd0c69d8295de486950 Gerrit-Change-Number: 35748 Gerrit-PatchSet: 1 Gerrit-Owner: laforge <laforge@osmocom.org> Gerrit-MessageType: newchange