Put a helper for wrapping an SMS-DELIVER TPDU in the ENVELOPE
of TS 102 223 section 7.5.1 the assembly next to SMSPPDownload,
where the IEs already live, so it can be reused by other tooling,
for example for triggering scp81 sessions.
Change-Id: Id23227eac53d697f4f13a84e087c32bf1d60f474
The BIP relay ( the "handset" side for SCP81) never worked: the
connect callback in handle_OpenChannel was "never called" as the fixme
says, everything else was missing.
Fixme cause: card APDU I/O is driven synchronously, proactive command loop
lives in a blocking while loop (pySim.transport.LinkBase.send_apdu_checksw)
that runs on the Twisted reactor thread. A Twisted TCP4ClientEndpoint +
connectProtocol only completes when the reactor does reactor things,
but the reactor thread is stuck in that loop for the whole proactive
session...
Fixme fix: don't fight the reactor, just drive the relay channel with a plain
old blocking socket, which fits the synchronous execution model.
Channel numbers now come from the command Device identities (channel_N ->
low nibble) instead of the hard coded chan_nr == 1.
Additionally fix two bugs found on the path to scp81 glory:
- TERMINAL RESPONSE device identities are forced to terminal->UICC per
TS 102 223 6.8.2 (prepare_response() inverts the command identities,
which for a channel-addressed BIP command yields channel_N->UICC).
- Error responses now build a valid AddlInfoBip cause, prepare_response()
hard coded empty "additional information" cannot be encoded for a
BIP error.
And some tests based on real card interactions.
Change-Id: If96c768f2e35c20ea3753e601059410121517b60
Move the code from pySim-smpp2sim.py to its own file, so it can be properly
extended.
The current file parses argv, opens a reader and starts the Twisted
reactor at import time, so nothing else can import it.
No functional changes yet, improvements follow in later commits.
Change-Id: Ifd8a15684939977d29ea83a6b669daee14484e88
The pySim-smpp2sim.py program exposes two interfaces:
* SMPP server-side port, so external programs can rx/tx SMS
* APDU interface towards the SIM card
It therefore emulates the SMSC, Core Network, RAND and UE parts
that would normally be encountered in an OTA setup.
Change-Id: Ie5bae9d823bca6f6c658bd455303f63bace2258c
Eric Wild