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authorPau Espin Pedrol <pespin@sysmocom.de>2022-06-15 16:13:39 +0200
committerPau Espin Pedrol <pespin@sysmocom.de>2022-06-15 16:20:11 +0200
commit3caeebc95e774974fbef46f01bf55d5e8ff117c6 (patch)
treecc5f8aacf124d3a38c548057621e5a6634ff1e67 /library/SABP_Adapter.ttcn
parentb6300d1ee2cbad0ccdfac8ada3c60036f177a3af (diff)
Move all SABP files to library/sabp/
Let's have all SABP related stuff together in one subdir, not some under the subdir and some directly under library/. Change-Id: Ibfd0287194c87dcc240590e0835d6205ead194f9
Diffstat (limited to 'library/SABP_Adapter.ttcn')
-rw-r--r--library/SABP_Adapter.ttcn165
1 files changed, 0 insertions, 165 deletions
diff --git a/library/SABP_Adapter.ttcn b/library/SABP_Adapter.ttcn
deleted file mode 100644
index 046f597c..00000000
--- a/library/SABP_Adapter.ttcn
+++ /dev/null
@@ -1,165 +0,0 @@
-module SABP_Adapter {
-
-/* SABP Adapter layer, sitting on top of SABP_CodecPort.
- * test suites can 'inherit' in order to have a SABP connection to the IUT which they're testing
- *
- * (C) 2019 by Harald Welte <laforge@gnumonks.org>
- * All rights reserved.
- *
- * Released under the terms of GNU General Public License, Version 2 or
- * (at your option) any later version.
- */
-
-
-import from Osmocom_Types all;
-import from General_Types all;
-import from SABP_Types all;
-import from SABP_PDU_Descriptions all;
-import from SABP_Templates all;
-import from SABP_CodecPort all;
-import from SABP_CodecPort_CtrlFunct all;
-import from IPL4asp_Types all;
-import from IPL4asp_PortType all;
-import from Socket_API_Definitions all;
-
-const integer SABP_HDR_LEN := 3;
-
-const integer NUM_SABP := 3;
-
-type component SABP_Adapter_CT {
- /* down-facing port to SABP Codec port */
- port SABP_CODEC_PT SABP[NUM_SABP];
- var IPL4asp_Types.ConnectionId g_sabp_conn_id[NUM_SABP] := { -1, -1, -1 };
-}
-
-/*! parse a single APER length determinant. Return -1 if input insufficient or -2 if invalid */
-private function f_aper_len_det(in octetstring stream, out integer len_len) return integer {
- if (lengthof(stream) < 1) {
- return -1;
- }
-
- select (stream[0] and4b 'C0'O) {
- case ('00'O) {
- /* total length is encoded in this octet */
- len_len := 1;
- return oct2int(stream[0]);
- }
- case ('80'O) {
- /* total length (up to 16k) encoded in two octets */
- if (lengthof(stream) < 2) {
- return -1;
- }
- len_len := 2;
- return (oct2int(stream[0] and4b '3F'O) * 256) + oct2int(stream[1]);
- }
- case ('C0'O) {
- /* total length not known, encoded in chunks; first chunk length now known */
- len_len := 1;
- return oct2int(stream[0] and4b '3F'O) * 16384;
- }
- case else {
- return -2;
- }
-
- }
-}
-
-/* The callback function has to return the length of the message if completely received. It has to return
- * "-1" if the length cannot be determined. If the message is incomplete, but the length can be
- * determined, then the function should return the length. In this case the callback function will not be
- * called again for the given message - possibly increasing the performance. Alternatively the function may
- * always return "-1" when the message is incomplete.
- * If the callback function detects that the it will be impossible to determine the length of the message,
- * even receiving more octets, should return "-2". In this case the connection will be closed and the
- * length calculation error will be reported. */
-private function f_APER_getMsgLen(in octetstring stream, inout Socket_API_Definitions.ro_integer args) return integer {
- var integer stream_len := lengthof(stream);
- var integer hdr_len := args[0];
- var octetstring stream_nohdr;
- var integer len, len_len;
-
- if (stream_len < hdr_len + 1) {
- return -1;
- }
- stream_nohdr := substr(stream, hdr_len, stream_len-hdr_len);
-
- len := f_aper_len_det(stream_nohdr, len_len);
- if (len < 0) {
- /* error: return to caller */
- return len;
- }
- if (len < 16384) {
- /* full length is known: return to caller */
- return hdr_len + len_len + len;
- } else {
- /* 'cursor' to next length indicator */
- var integer cur := hdr_len + len_len + len;
- /* iterate the whole chain of chunks */
- while (true) {
- if (stream_len < cur + 1) {
- return -1;
- }
- len := f_aper_len_det(substr(stream, cur, stream_len-cur), len_len);
- if (len < 0) {
- /* error: return to caller */
- return len;
- }
- if (len < 16384) {
- /* final chunk: segment with less than 16384 bytes */
- return cur + len_len + len;
- } else {
- /* point to next chunk */
- cur := cur + len_len + len;
- }
- }
- }
- /* not reached */
- return -2;
-}
-
-private function f_set_tcp_segmentation(integer idx) runs on SABP_Adapter_CT {
- /* Set function for dissecting the binary stream into packets */
- var f_IPL4_getMsgLen vl_f := refers(f_APER_getMsgLen);
- /* Offset: 1, size of length: 3, delta: 4, multiplier: 1, big-endian */
- SABP_CodecPort_CtrlFunct.f_IPL4_setGetMsgLen(SABP[idx], g_sabp_conn_id[idx], vl_f, {SABP_HDR_LEN});
-}
-
-function f_connect(charstring remote_host, IPL4asp_Types.PortNumber remote_port,
- charstring local_host, IPL4asp_Types.PortNumber local_port, integer idx := 0)
-runs on SABP_Adapter_CT {
- var IPL4asp_Types.Result res;
- map(self:SABP[idx], system:SABP);
- res := SABP_CodecPort_CtrlFunct.f_IPL4_connect(SABP[idx], remote_host, remote_port,
- local_host, local_port, 0, { tcp :={} });
- if (not ispresent(res.connId)) {
- setverdict(fail, "Could not connect to SABP port, check your configuration");
- mtc.stop;
- }
- g_sabp_conn_id[idx] := res.connId;
-
- f_set_tcp_segmentation(idx);
-}
-
-/* Function to use to bind to a local port as IPA server, accepting remote clients */
-function f_bind(charstring local_host, IPL4asp_Types.PortNumber local_port, integer idx := 0)
-runs on SABP_Adapter_CT {
- var IPL4asp_Types.Result res;
- map(self:SABP[idx], system:SABP);
- res := SABP_CodecPort_CtrlFunct.f_IPL4_listen(SABP[idx], local_host, local_port, { tcp:={} });
- g_sabp_conn_id[idx] := res.connId;
-
- f_set_tcp_segmentation(idx);
-}
-
-function f_sabp_send(template (value) SABP_PDU pdu, integer idx := 0) runs on SABP_Adapter_CT {
- SABP[idx].send(ts_SABP_Send(g_sabp_conn_id[idx], pdu));
-}
-
-function f_sabp_exp(template SABP_PDU exp, integer idx := 0) runs on SABP_Adapter_CT return SABP_PDU {
- var SABP_RecvFrom rf;
- SABP[idx].receive(tr_SABP_Recv(g_sabp_conn_id[idx], exp)) -> value rf;
- return rf.msg;
-}
-
-
-}