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574 Commits

Author SHA1 Message Date
Harald Welte 75a4e65f52 hnbgw: Add SUA client socket towards localhost 
This socket doesn't do much yet except to connect to localhost:14001

The host/port needs to be made configurable, and the RUA<->SUA
interfacing needs to be implemented.

Also, we'll need two SUA sockets, one for MSC and one for SGSN.
 2015-12-23 00:04:05 +01:00
Harald Welte 38a4f32d58 remove sigtran code, now part of libosmo-sccp 2015-12-23 00:04:05 +01:00
Daniel Willmann 269b8ac7ee hnbgw: Free msgb when connection is closed 2015-12-22 16:40:46 +01:00
Daniel Willmann 541e429a39 hnbgw_hnbap.c: Clean up after encoding a UE register accept 
Need to free the ASN.1 structs after using them to encode the UE
register accept message.
 2015-12-22 16:40:46 +01:00
Daniel Willmann d174e76f1d asn1tostruct.py: Fix memory leaks in generated code 
The decode_*ies functions did not clean up after them. This change is
taken from changes made to asn1tostruct.py in openair-cn repository.
 2015-12-22 16:40:46 +01:00
Neels Hofmeyr 8aac21a5e8 Remove obsolete ffasn1c files. 
The ffasn1c files from early trials are obsolete, we're using asn1c now.
 2015-12-22 13:02:42 +01:00
Neels Hofmeyr c51f735b35 really fix src/Makefile.am 
Add BUILT_SOURCES to src/Makefile.am.

(And remove a stray space.)
 2015-12-22 12:27:02 +01:00
Alexander Huemer fec171d8b4 fix Makefile.am 2015-12-22 12:24:27 +01:00
Neels Hofmeyr 6682a37875 README, .gitignore 
Update building instructions and add tests/atconfig to .gitignore.
 2015-12-22 12:22:10 +01:00
Harald Welte 8960704d1c SUA: Ensure osmo_ prefix is used on all global symbols 2015-12-21 23:51:08 +01:00
Harald Welte 70e84ab5f9 SUA: More FIXMEs 2015-12-21 23:50:36 +01:00
Harald Welte 283c7fde38 Add WIP code for SCCP User Adaptation (SUA) and SCCP User SAP 
The idea of this code is to
* provide a SCCP User SAP as boundary between the User of SCCP
  or SCCP-like transport like SUA
* implement the minimum subset of SUA to transport RANAP messages
  betweene HNB-GW and MSC/SGSN

At this point
* we don't yet implement the proper state machines and timer
* we don't imp[lement the SCCP RESET procedure
* we don't implement AS/ASP management

The code is full of FIXMEs whihc hopefully will get fixed gradually.

After some cleanup + verification, it should move to a library, possibly
either replacing/renaming libomo-sccp, or adding it to libosmo-netif?
 2015-12-21 23:35:56 +01:00
Harald Welte 71f73a2919 move COPYING file to root directory 2015-12-21 21:01:00 +01:00
Harald Welte ef5055c275 Makefile.am: Try to model the asn1tostruct.py generation dependencies 2015-12-21 17:50:11 +01:00
Harald Welte e98dacd1cb add TS 25.412 spec 2015-12-19 16:24:22 +01:00
Harald Welte c32b0d9848 Add various RANAP packet captures (pcap files) found on the net 2015-12-19 14:52:44 +01:00
Harald Welte b2daa0d803 ranap ASN.1: Define IMSI as OCTET STRING to work around asn1c bug 
When IMSI is a TBCD-STRING type, and TBCD-STRING is defined as OCTET
STRING, we end up encoding the IMSI the wrong way.  I don't knwo why
that is, but changing it fixed the problem, as described below:

before this commit:
00 17                           PeranentNAS-UE-ID
40                              criticality ignore
0a                              (length)
00                              presence = IMSI
08                              BUG: why the additional length field?
46 23 91 34 70 77 80 f3         IMSI (643219430777083)

after this commit:
00 17                           PeranentNAS-UE-ID
40                              criticality ignore
09                              (length)
50                              presence = IMSI
46 23 91 34 70 77 80 f3         IMSI (643219430777083)
 2015-12-19 13:05:19 +01:00
Harald Welte 0a3eafee45 ranap: Don' shift the RAB ID by 3 bits 2015-12-19 02:38:09 +01:00
Harald Welte 94a62d591d ranap: No need for htonl() of IP addresses and the like 2015-12-19 02:37:48 +01:00
Harald Welte b7f67c4b14 ranap: Don't forget ProtocolIE-CointainerPair around ProtocolIE-FieldPair 2015-12-19 02:37:35 +01:00
Harald Welte de9055f142 Makefile.am: Replace .PHONY asn1tostruct.py rules 
asn1tostruct.py generates three files.  Try to teach the makefile that
all three of them depend on the .asn source file to ensure they're
re-built whenever the .asn source file changes.
 2015-12-18 20:20:51 +01:00
Harald Welte f8db61b554 First compiling (and leak-free) RANAP message generation functions 
encoding correctness still needs to be verified at this point.  At least
they generate some binary output without failing somewhere earlier in
the encoding process - and they don't leave any leaked memory behind,
see talloc_report() at the end of test-ranap.c:main().
 2015-12-18 20:20:47 +01:00
Harald Welte fcabec3665 implement BIT_STRING_fromBuf() similar to OCTET_STRING_fromBuf() 2015-12-18 17:51:50 +01:00
Harald Welte 16232780d8 ranap_common: Fix error cleanup path while generating IE Pair 2015-12-18 17:22:04 +01:00
Harald Welte 04329dcbdc {hnbap,rua,ranap}_common: check for encoding errors in new_ie() 2015-12-18 15:18:13 +01:00
Harald Welte 629391321f {hnbap,ranap,rua}_common: use FREEMEM(), not free() directly 
If we allocate with CALLOC/MALLOC macros, we need to release memory via the
same API.
 2015-12-18 14:58:34 +01:00
Harald Welte 8526d158f8 hnbap/rua: Don't usse malloc() directly but use CALLOC() macro 2015-12-18 13:41:39 +01:00
Harald Welte 9c397d4969 ranap: Use CALLOC() macro of libasn1c 
we don't use malloc() directly, as that doesn't mix well with
our libasn1c using talloc.
 2015-12-18 13:35:58 +01:00
Harald Welte 2676554c92 ranap: Ensure we free any intermediate dynamically allocated memory 2015-12-18 13:35:58 +01:00
Harald Welte d062df5307 test-ranap.c: Further WIP, it now actually compiles 2015-12-18 13:35:58 +01:00
Harald Welte 93690184b0 RANAP: Split FormatInformationParameter / SDUParameterItem 
The definition of the above data types as per 3GPP specs results in a
SEQUENCE_OF() an anonymous structure, which is slightly inconvenient to
use.  So let's split the SEQUENCE OF part and the actual definition of
the item in separate types.
 2015-12-18 13:35:58 +01:00
Harald Welte 091039d47e test-ranap.c: More WIP code for convoluted RANAP message encoding 2015-12-18 13:35:58 +01:00
Daniel Willmann 141a0baac9 hnb-test: Add an option to transmit multiple UE register/deregister msgs 2015-12-17 18:03:52 +01:00
Daniel Willmann 28b9ec1473 Enable vty command to output talloc report 
I don't think I can print this into a string and thus output it via VTY.
In that case it might be smarte to do in a signal handler
 2015-12-17 18:02:37 +01:00
Daniel Willmann 5f810f4222 hnbgw_hnbap: Initialize return value and always return something 2015-12-17 17:57:51 +01:00
Daniel Willmann 59d17d8961 hnbap: Free ASN.1 components after they are no longer needed 2015-12-17 17:56:56 +01:00
Daniel Willmann 6637a289da hnb-test: Handle closed connections correctly 2015-12-17 14:47:51 +01:00
Daniel Willmann 19dedbb6b1 hnb-test: Send UE de-register after receiving the UE registration accept 2015-12-17 13:09:37 +01:00
Daniel Willmann 92856e6ef2 hnb-test.c: Remove pdus.h include as it is not used 
The messages are constructed so no need to include the binary asn1 data.
 2015-12-17 13:09:37 +01:00
Daniel Willmann 3279780557 hnb-test: Add HNBAP category and reduce MAIN loglevel to INFO 2015-12-17 13:09:18 +01:00
Daniel Willmann bded9841b5 hnbgw: Change logging priorities and add HNBAP category 
Log hnbap messages to the HNBAP category. Change MAIN category to only
log INFO and above and change SCTP notification message to debug.
 2015-12-17 13:09:18 +01:00
Daniel Willmann efceb187aa hnbgw_hnbap: Process UEDeRegister and try to free correct UE 2015-12-17 13:09:18 +01:00
Daniel Willmann 4267a29ee0 hnbgw: Handle closed connections correctly 
We still need to clean up the HNB data structures after the connection
is closed
 2015-12-17 13:09:18 +01:00
Daniel Willmann 7c27f7b792 hnbgw: Lower level of SCTP notif. msg to debug and set default log level to info 2015-12-17 13:08:32 +01:00
Harald Welte ace1d24d34 ranap_common: Add function to wrap IEs into a RANAP_ProtocolIE_FieldPair_t 
The FieldPair is a strange construct of RANAP Radio Access Bearer
assignment, where certain IEs appear in pairs.
 2015-12-16 23:07:19 +01:00
Harald Welte 462db35426 hnbap_common: Fix copy+paste mistake (use hnbap msgb allocator) 2015-12-16 23:06:59 +01:00
Harald Welte d328c1a3ac WIP: add some early code for generating required RANAP messages 2015-12-16 23:04:21 +01:00
Harald Welte c16117a22c Add ranap_generate_outcome() function 
Ranap has not only successsful and unsuccessful outcome, but also
an unqualified general 'outcome'.
 2015-12-16 20:30:11 +01:00
Harald Welte 8dacb07baf {hnbap,rua,ranap}_common.c: Reduce code duplicatioon 
There used to be a lot of code duplication between the code to generate
initiating, successfulOutcome and unsuccessfulOutcome messages.  Try to
reduce that by callign a generic function.
 2015-12-16 20:27:14 +01:00
Harald Welte cbaaeefe00 {rua,hnbap,ranap}_common: Add missing encoding functions 
We used to only have those generator functions that we needed for
the existing hnbgw code; Implement the missing encoders
 2015-12-16 20:17:26 +01:00