As part of fixing issue OS#3075, we want to migrate support
for encoding system information from osmo-bsc to libosmocore.
This change ports one of the prerequisites for doing so:
osmo-bsc code for range-encoding ARFCNs, including tests.
An osmo_gsm48_ prefix has been prepended to public symbols in
order to avoid clashes with existing symbols in osmo-bsc code.
Change-Id: Ia220764fba451be5e975ae7c5eefb1a25ac2bf2c
Related: OS#3075
Note that OSMO_GSUP_IMEI_RESULT_ACK is 0 on the wire, although the
enum value is 1. Same with NACK (1 on wire, enum 2).
I had implemented enum osmo_gsup_imei_result after
enum osmo_gsup_cancel_type above, where this comment exists as well,
and I incorrectly assumed that enum osmo_gsup_cn_domain in the middle
was also implemented this way and therefore adding the comments to each
enum would be redundant. But for cn_domain, the values on the wire are
the same as the enum values.
Change-Id: If97c34f117bfaab2232bbb625e9d118c8f390e58
Since osmo_hexdump() use static buffers we can't re-use pointers to it
after subsequent osmo_hexdump() calls. Let's print data used for
comparison directly instead.
Change-Id: I24dc3fad6f64ef788da9b7d790f9d5f689190c42
We have gsm48_mi_to_string() and osmo_bcd2str(), but still lack a function that
conveniently prints both MI type and value in one function call.
Related: http://people.osmocom.org/neels/mi_mi_mi.jpg
Change-Id: I7798c3ef983c2e333b2b9cbffef6f366f370bd81
Previously it could encode both incorrect values as well as incorrect
message. Let's fix this by explicitly checking for invalid values and
ensuring that at least one of the parameters is valid.
This function have no external or internal users so it's better to fix
type signature as well to match the rest of gsm0808_create_lcls_*().
Change-Id: I7b33a771acbd391c5f9a494d6450edb18511433f
Disable GnuTLS fallback if sufficient glibc version detected. Previously
GnuTLS fallback was used regardless of getrandom() availability in
glibc. Fix this by automatically disabling it when not needed. This does
not affect the ability to manually disable it unconditionally.
Change-Id: Ibe2117afc050261668a4d5a590044aabcd08aefe
* use macro for version check
* report glibc version upon random.h detection
* comment where various #endif belongs to
* explicitly check for embedded build (our target toolchain don't use
libc so there's no point in checking its version)
Change-Id: Ia54f0b7a861f955be65bb0cf06eb10af9372d062
Both session state and session ID IEs were left from the initial
version of Ibe325c64ae2d6c626b232533bb4cbc65fc2b5d71. There is
no need to use them (as we use SM-RP-MR), so let's clean up.
Change-Id: I0d910b87f15ffbc0aeeca9cb4fcbef32bdf3ef88
In the MSC, we have RAN types GERAN_A and UTRAN_IU, now we need a similar enum
in osmo-hlr's GSUP client.
Naming: in the MAP specifications, the RAN type is mostly called RAT type,
(Radio Access Network vs. Radio Access Technology?). Since GSUP is more about
MAP messages, I'm calling the enum osmo_rat_type.
Rationale: osmo-msc and osmo-sgsn want to tell the osmo-hlr which RAT a
subscriber is calling on. A subsequent patch will extend the GSUP protocol and
add a RAT types IE.
Change-Id: I659687aef7a4d67ca372a39fef31dee07aed7631
Using an FSM instace's logging context is very useful. Sometimes it makes sense
to log something on a different logging category than the FSM definition's
default category.
For example, an MSC conn has aspects concerning MM, CC, RR, MGCP, ..., and
currently all of those log on DMM.
This came up in I358cfbaf0f44f25148e8b9bafcb9257b1952b35a, where I want to log
an MGCP event using a ran_conn context, and used the conn->fi->id. That of
course omits context like the current conn FSM state...
I remember at least one other place where I recently added logging using some
fi->id as context, so it might turn out useful in various places.
Change-Id: I11b182a03f5ecb6df7cd8f260757d3626c8e945d
The LOGPFSM macros are in such wide use that they should guard against a NULL
fi pointer. In case of NULL, default to subsys = DLGLOBAL, loglevel =
LOGL_ERROR and state = "fi=NULL".
Change-Id: I9eaf8b7e2cf1e450ae626cb2fc928862008f6233
According to the man page, vsnprintf() returns:
- a negative value in case of error;
- the number of characters written (excluding '\0');
- the number of characters which *would have been written*
if enough space had been available (excluding '\0').
We need to detect if the output was truncated, and properly
limit the amount of bytes to be reserved within a msgb.
Change-Id: Ifa822edf900ed925ba935c54a28c797c4657358a
In 3GPP TS 48.008 the Global Call Reference IE is only used in HANDOVER
REQUEST (§3.2.1.8) and ASSIGNMENT REQUEST (§3.2.1.1) messages which
also include LCLS Config and CSC parameters. Hence, there's no point in
using GCR encode/decode functions alone.
Introduce gsm0808_dec_lcls() and gsm0808_enc_lcls() as trivial wrappers
on top of GCR enc/dec routines which are made static. Adjust tests
accordingly. Test output intentionally left unchanged.
Change-Id: Icfbb2404e1a1d500243e2071173299b557369335
Instead of duplicating the fmt and args in LOGPFSML and LOGPFSMLSRC, rather
make LOGPFSML invoke LOGPFSMLSRC with __FILE__ and __LINE__.
This is a cosmetic preparation for more tweaks coming up.
Change-Id: I2f23c57ebfdb5355919c06ac5ded7732e3b17a97
In 99ae401e49 we introduced the ability
to specify the TCP port to which the VTY should bind. However, the VTY
dcumentation wasn't extended accordingly, causing virtually all master
build jobs to fail.
Change-Id: I54fb0ca0d3a884a64a349b22de70f3d9bd1a6d54
Extend the vty_bind_cmd VTY command to allow to optionally specify
a port in addition to the IPv4 address.
Introduce telnet_init_default to relieve client code from having
to query the bind IPv4 address (and now the TCP port). Instead a
client only needs to pass the default TCP port to use.
Client code should use it like:
int rc = telnet_init_default(ctx, priv, OSMO_VTY_PORT_SGSN);
Change-Id: Id5fb2faaf4311bd7284ee870526a6f87b7e260f3
Since I3bc95f2f5ab6e3f4b502647fb3e0aaaf1f7c4cf5, we have some
helpers to compare certain msgb layer to a given buffer. Let's
change 'VERIFY' macro to use msgb_eq_l3_data_print().
Change-Id: Ib6be778236eff8f2153f3113f9379ecfbec9052b
Implement necessary messages for Procedure Check_IMEI_VLR (TS 23.018
Chapter 7.1.2.9). This lets the VLR ask the EIR to check if an IMEI
is valid. In the Osmocom stack, we don't have an EIR and this request
will be handled by the HLR. We will be able to store the IMEI in the
HLR as side-effect (OS#2541).
This is roughly based on TS 29.002 8.7.1 MAP_CHECK_IMEI service, but
only implements the bare minimum required IEs (imei and imei_result).
Related: OS#3733
Change-Id: I085819df0ea7f3bfeb0cabebb5fd1942a23c6155
Simplify gsup_test.c by defining an end marker in gsup.h. No need to
manually update the last element every time anymore.
The C standard guarantees, that the end marker will have the last value
plus one: "Each subsequent enumerator with no = defines its enumeration
constant as the value of the constant expression obtained by adding 1 to
the value of the previous enumeration constant." (From C99: 6.7.2.2
Enumeration specifiers)
Change-Id: I2aab7245e209f0ebd2f33a83d4d181dd3339cb17
Similar to existing 16 and 32 bit value helpers but simpler because we
don't have to worry about alingment and endianness.
Change-Id: Ic0a148bd04b8860e321f509fdcd913f688c8e920
The name "LAI AND LAC" makes no sense because a LAC
is part of a LAI. Keep the old name available for
API backwards compatibility.
Change-Id: I2749cf75b7b45de0cd43cf4c696a6b6984f5a065
Related: OS#3124
This is 1:1 the result of doing
cd libosmocore
./contrib/struct_endianess.py
git commit -a
Running struct_endianess.py again should result in no changes.
That means we could include such a check in the gerrit verification job now.
Change-Id: Ia0b99d76932aeb03e93bd0c62d3bf025dec5f9d2
Basically, I am applying code review that I would have given had I not been on
vacation when the last osmo_sock_get_name* stuff was merged.
osmo_sock_get_name2() is so far a static internal function. However, it is
nothing like osmo_sock_get_name(), so instead rename it to
osmo_sock_get_ip_and_port(). Also make it public API, no need to hide it. I'm
adding an "and" in the name to hopefully clarify: "ip_port" vs. "ip_and_port"
-- there already are _get_X_ip_port() functions that only return the port
string, despite "ip" in the name.
Add new public osmo_sock_get_name2(), which is like osmo_sock_get_name(),
except it uses a static string instead of talloc, and omits the braces. This
is most convenient for log statement formats, avoiding dyn allocations.
Add new osmo_sock_get_name_buf(), which is like osmo_sock_get_name2() but
writes to a caller provided char buffer.
Use osmo_sock_get_name_buf() in the implementation of osmo_sock_get_name(),
but use another (non-static) local string buffer, because adding braces is too
complex without talloc_snprintf().
Rationale:
I want to improve the logging of socket errors, e.g. change
DLMGCP ERROR Failed to read: 111/Connection refused (mgcp_client.c:720)
to
DLMGCP ERROR Failed to read: r=10.0.99.2:2427<->l=10.0.99.2:2728: 111='Connection refused' (mgcp_client.c:721)
but it is just not handy to compose logging with the current API:
- osmo_sock_get_name() requires a talloc_free().
- all the others require output buffers.
- the only way to conveniently compose a logging string and,
- notably, the only trivial way to skip the string composition if the logging
level is currently muted, is to have a function that returns a static string:
the new osmo_sock_get_name2().
- (I think the osmo_sock_get_{local,remote}_* convenience wrappers should never
have been added, because they encourage the caller to invoke the same code
twice, for IP addr and port, and throw away one half each time.)
Related: Iae728192f499330d16836d9435648f6b8ed213b6 (osmo-mgw)
Change-Id: I8ad89ac447c9c582742e70d082072bdd40a5a398
According to 3GPP TS 29.002, section 12.4, MAP-READY-FOR-SM is
used between the MSC and VLR as well as between the VLR and the
HLR to indicate that a subscriber has memory available for SMS.
This change replicates this service in GSUP as READY_FOR_SM_*.
The only mandatory IE for this service (excluding Invoke ID) is
'Alert Reason' that is replicated by OSMO_GSUP_SM_ALERT_RSN_IE.
Change-Id: Ic37f3b2114b8095cfce22977e67133b9103942e3
Related Change-Id: (docs) I549b6c8840a1e86caac09e77fb8bc5042d939e62
Related Change-Id: (TTCN) If2256607527ecfcb10285583332fb8b0515d7c78
Related: OS#3587
According to 3GPP TS 29.002, there are two services:
- MAP-MO-FORWARD-SHORT-MESSAGE (see 12.2),
- MAP-MT-FORWARD-SHORT-MESSAGE (see 12.9),
which are used to forward MO/MT short messages.
This change replicates both services as GSUP messages:
- OSMO_GSUP_MSGT_MO_FORWARD_SM_*,
- OSMO_GSUP_MSGT_MT_FORWARD_SM_*.
Please note, that only the 'must-have' IEs are introduced
by this change, in particular the following:
- OSMO_GSUP_SM_RP_MR_IE (see note below),
- OSMO_GSUP_SM_RP_DA_IE (see 7.6.8.1),
- OSMO_GSUP_SM_RP_OA_IE (see 7.6.8.2),
- OSMO_GSUP_SM_RP_UI_IE (see 7.6.8.4),
- OSMO_GSUP_SM_RP_MMS_IE (see 7.6.8.7),
- OSMO_GSUP_SM_RP_CAUSE_IE (see GSM TS 04.11, 8.2.5.4),
where both SM_RP_DA and SM_RP_OA IEs basically contain
a single nested TV of the following format:
- T: identity type (see 'osmo_gsup_sms_sm_rp_oda_t'),
- V: encoded identity itself (optional).
According to GSM TS 04.11, every single message on the SM-RL has
an unique message reference (see 8.2.3), that is used to link
an RP-ACK or RP-ERROR message to the associated (preceding)
RP-DATA or RP-SMMA message transfer attempt.
In case of TCAP/MAP, this message reference is being mapped to the
Invoke ID. But since GSUP has no 'Invoke ID' IE, and it is not
required for other applications (other than SMS), this change
introduces a special 'SM_RP_MR' IE that doesn't exist in MAP.
Change-Id: Ibe325c64ae2d6c626b232533bb4cbc65fc2b5d71
Related Change-Id: (docs) Ie0150756c33c1352bc4eb49421824542c711175c
Related Change-Id: (TTCN) Ibf49474a81235096c032ea21f217170f523bd94e
Related: OS#3587
* add functions to encode Global Call. Ref. from TS 29.205 as 3GPP TS
48.008 §3.2.2.115 information element
* add corresponding tests
Change-Id: I82ce0207dc8de50689a8806c6471ad7fbae6219d
Add functions to encode and decode Global Call Reference as per
3GPP TS 29.205 Table B 2.1.9.1 add corresponding tests.
Change-Id: Iee95aa4e5c056645b6cb5667e4a067097d52dfbf
Related: OS#2487
It's often handy to compare certain msgb layer to a given array and
print the position where they differ. Add simple pretty-printer and
corresponding L* wrappers.
Change-Id: I3bc95f2f5ab6e3f4b502647fb3e0aaaf1f7c4cf5
All successful cases already return from the switch(), so simply handle all
errors below it by returning an empty string (if there is enough string
buffer).
Change-Id: I709ac3b9efb7b4258d8660715b10312e11b9b571
For MI encoding, see 3GPP TS 24.008, 10.5.1.4 Mobile Identity. The 'odd' flag
indicates whether the last BCD nibble is used. Of course that flag should be
made sure to reflect the actual length.
Change-Id: Id6e695ebf9f86b295eaa7e2c6228989256f37e68
By using osmo_bcd2str(), ensure that the resulting string is always nul
terminated, and always return strlen()+1 whether truncated or not.
Still keep up the previous return value style, even if that isn't consistent at
all.
The difference between IMSI/IMEI and TMSI return values remains and is not part
of this patch.
Change-Id: I1b51b72a721e1cc9d69796b804ebda741ff0f36b
Add a standalone bcd-to-string conversion function with generic parameters.
Add a regression test in utils_test.c.
So far there is no single universal implementation that converts a BCD to a
string. I could only find gsm48_mi_to_string(), which also interprets
surrounding bytes, MI type and TMSI as non-BCD value.
The idea is to use this function from gsm48_mi_to_string() and similar
implementations in subsequent commits.
Root cause: in osmo-msc, I want to have an alternative MI-to-string function
for composing an FSM name, which needs the BCD part of gsm48_mi_to_string() but
not the TMSI part.
Change-Id: I86b09d37ceef33331c1a56046a5443127d6c6be0
Counting list entires should not alter the list content: let's make this
obvious from type signature.
Change-Id: I414e67a3de733fab407161b3264d3b89070ba537
Stefan Sperling
Oliver Smith
Harald Welte
Pau Espin
