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This requires the corresponding commit in libosmocore.
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This requres the corresponding commit in libosmocore.
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Trigger an OAP registration upon IPA connect. Feed incoming OAP messages to
oap_handle() and send replies returned by it.
Add oap_config to sgsn_config (todo: vty).
Sponsored-by: On-Waves ehf
[hfreyther: Fix coding style]
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[hfreyther: Link to libcrypto, include header, add uint8_t* cast]
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Currently just the number of intercepted downlink messages is counted
and eventually checked. The contents of the messages is lost. The
PTMSI contained in ATTACH/RAU Accept messages is just 'guessed' by
resetting the random number generator after reference PTMSIs have
been generated. While this works with rand_r, RAND_bytes cannot be
forced to recreate a certain number sequence this way (unless the
backend is replaced).
This commit changes that behaviour so that the last received msgb is
kept and decoded. The PTMSI that has been assigned by the SGSN is
then taken in the affected test cases and used instead of a 'guessed'
one. This is similar to how a real MS would react to the Accept
message.
Sponsored-by: On-Waves ehf
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The commit not compiling/linking should have been a strong
indicator that it has not been tested either.
This reverts commit 6cf0249dacc4ae46eb0857c007906c9a3f128a3e.
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[hfreyther: Link to libcrypto, include header, add uint8_t* cast]
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For real networks we need to check if the requested APN string
is allowed and then resolve the GGSN address through DNS. There
are countries with two or three digit MNCs and one could either
try to keep a list of countries that have two/three digits or
just try both of them. I have opted for the later for the ease
of the implementation.
C-Ares doesn't allow to cancel a request so we will need to
have the MMCTX and the Lookup have different lifetimes. We simply
set ->mmctx to NULL in case the MMCTX dies more early.
The selected and verified apn_str will be copied into the out
parameter. In case no static APN/GGSN config is present and the
dynamic mode is enabled a request will be made.
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Currently old LLMEs and MM contexts that haven't been explicitly
detached or cancelled are not removed until another request with the
same IMSI is made. These stale entries may accumulate over time and
severely compromise the operation of the SGSN.
This patch implements age based LLME expiry, when the maximum age has
been reached, the corresponding MM context is cancelled. If such an MM
context doesn't exist, the LLME is unassigned directly.
The implementation works as follows.
- llme->age_timestamp is reset on each received PTP LLC message
- sgsn_llme_check_cb is invoked periodically (each 30s)
- sgsn_llme_check_cb sets the age_timestamp to the current time if
it has been reset
- sgsn_llme_check_cb computes the age and expires the LLME if
it exceeds gprs_max_time_to_idle()
Ticket: OW#1364
Sponsored-by: On-Waves ehf
[hfreyther: Fix typo in comment LMME -> LLME]
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This test replaces gprs_gsup_client_send by a custom function, that
emulates a GSUP remote peer by calling gprs_subscr_rx_gsup_message
with responses for all requests. It then executes a full
Attach/Detach cycle.
Sponsored-by: On-Waves ehf
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Currently the mapping between GSM 04.08 (GPRS) protocol specific
numbers and their textual description was put into gprs_gmm.c and not
exported.
This commit moves the mappings to a new file gsm_04_08_gprs.c,
renames some of them, and exports them via gsm_04_08_gprs.h.
The following identifiers are renamed to match the corresponding type
names:
- gmm_cause_names -> gsm48_gmm_cause_names
- gsm_cause_names -> gsm48_gsm_cause_names
Sponsored-by: On-Waves ehf
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This commit adds GSUP client configuration (via VTY), connection set
up, and real message sending.
The following configuration commands are added:
- gsup remote-ip A.B.C.D set server IP address
- gsup remote-port PORT set server TCP port
Ticket: OW#1338
Sponsored-by: On-Waves ehf
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This patch extends gprs_subscr_query_auth_info and
gprs_subscr_location_update to create GSUP messages with the help of
a static gprs_subscr_tx_gsup_message function. A corresponding
gprs_subscr_rx_gsup_message is added which takes a messages, gets the
subscr, and updates it accordingly.
Sponsored-by: On-Waves ehf
[hfreyther: Added a msgb_free gprs_subscr_tx_gsup_message]
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This implements the MAP way of subscriber validation when the MS
tries to perform an Attach Request:
1. perform authentication (optionally invoke the sendAuthInfo
procedure), starts the Auth & Ciph procedure
2. perform update location
3. insert subscriber data
4. finish the update location
5. Attach Accept / Attach Reject
The authentication triplets are used and eventually updated if all of
them have been used.
This is currently accessible via the VTY interface by the following
commands:
- update-subscriber imsi IMSI update-auth-info
- update-subscriber imsi IMSI update-location-result (ok|ERR-CAUSE)
Sponsored-by: On-Waves ehf
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This commit adds a new authorization policy 'remote' and uses
the subscriber cache for authorization when this policy is being used.
Note that there is no remote backend implemented yet. After the
IMSI/IMEI have been acquired, a request would be sent to the remote
peer. The attach/auth-ciph procedure continues when authorization
info has been received from the peer. This means, that
gprs_subscr_update() must be called then to tell the GMM layer
that it can proceed. A later commit will add VTY commands to do this
manually.
Sponsored-by: On-Waves ehf
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This patch adds GPRS specific functions for gsm_subscriber objects
(allocation, retrieval, deletion) and subscriber data
requests/updates. The sgsn_update_subscriber_data callback is used to
notify the sgsn about updates and is extended by a parameter that
passes a reference to a gsm_subscriber.
Sponsored-by: On-Waves ehf
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Currently the ACL code is located in sgsn_vty.c.
This commit moves this to a new file sgsn_auth.c as a first step to
make authorization more flexible in order to implement remote
acquisition on subsciber data.
Sponsored-by: On-Waves ehf
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On an "unassignment" this code verifies that the LLME will vanish
from the list of LLMEs. We assume that this doesn't create a
memory leak.
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