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authorHarald Welte <laforge@gnumonks.org>2018-03-26 19:02:08 +0200
committerHarald Welte <laforge@gnumonks.org>2018-03-26 19:02:08 +0200
commit670659c28c298a6383838bdb5c94da36312c26f3 (patch)
tree5cbe04e7c033d857a7bdbb095c97bd558afad2af /titan/MNCC_EncDec.cc
parent75e95789179b2efac88fd0f8d6555722695e3f94 (diff)
add TITAN support for MNCC/PCU interface decoding
Diffstat (limited to 'titan/MNCC_EncDec.cc')
-rw-r--r--titan/MNCC_EncDec.cc321
1 files changed, 321 insertions, 0 deletions
diff --git a/titan/MNCC_EncDec.cc b/titan/MNCC_EncDec.cc
new file mode 100644
index 0000000..cdfe3ed
--- /dev/null
+++ b/titan/MNCC_EncDec.cc
@@ -0,0 +1,321 @@
+#include "mncc.h"
+#include "MNCC_Types.hh"
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+namespace MNCC__Types {
+
+static void enc_bcap(struct gsm_mncc_bearer_cap *out, const MNCC__bearer__cap& in)
+{
+ out->transfer = in.transfer();
+ out->mode = in.mode();
+ out->coding = in.coding();
+ out->radio = in.radio();
+ out->speech_ctm = in.speech__ctm();
+
+ for (int i = 0; i < in.speech__ver().lengthof(); i++)
+ out->speech_ver[i] = in.speech__ver()[i];
+
+ if (in.data().is_value()) {
+ MNCC__bearer__cap__data data = in.data();
+ out->data.rate_adaption = (gsm48_bcap_ra) (int) data.rate__adaptation();
+ out->data.sig_access = (gsm48_bcap_sig_access) (int) data.sig__access();
+ out->data.async = data.async();
+ out->data.nr_stop_bits = data.nr__stop__bits();
+ out->data.nr_data_bits = data.nr__data__bits();
+ out->data.user_rate = (gsm48_bcap_user_rate) (int) data.user__rate();
+ out->data.parity = (gsm48_bcap_parity) (int) data.parity();
+ out->data.interm_rate = (gsm48_bcap_interm_rate) (int) data.interm__rate();
+ out->data.transp = (gsm48_bcap_transp) (int) data.transp();
+ out->data.modem_type = (gsm48_bcap_modem_type) (int) data.modem__type();
+ }
+
+}
+
+static MNCC__bearer__cap dec_bcap(const struct gsm_mncc_bearer_cap *in)
+{
+ MNCC__bearer__cap__data data;
+ MNCC__speech__vers vers;
+ data = MNCC__bearer__cap__data((GSM48__bcap__ra) in->data.rate_adaption,
+ (GSM48__bcap__sig__access) in->data.sig_access,
+ in->data.async,
+ in->data.nr_stop_bits,
+ in->data.nr_data_bits,
+ (GSM48__bcap__user__rate) in->data.user_rate,
+ (GSM48__bcap__parity) in->data.parity,
+ (GSM48__bcap__interm__rate) in->data.interm_rate,
+ (GSM48__bcap__transp) in->data.transp,
+ (GSM48__bcap__modem__type) in->data.modem_type);
+
+ for (unsigned int i = 0; i < ARRAY_SIZE(in->speech_ver); i++)
+ vers[0] = in->speech_ver[0];
+
+ return MNCC__bearer__cap(in->transfer, in->mode, in->coding, in->radio, in->speech_ctm,
+ vers, data);
+}
+
+
+static void enc_number(struct gsm_mncc_number *num, const MNCC__number& in)
+{
+ num->type = in.number__type();
+ num->plan = in.plan();
+ num->present = in.presence();
+ num->screen = in.screen();
+ strncpy(num->number, in.number(), sizeof(num->number));
+}
+
+static MNCC__number dec_number(const struct gsm_mncc_number *num)
+{
+ return MNCC__number(num->type, num->plan,num->present, num->screen, num->number);
+}
+
+OCTETSTRING enc__MNCC__PDU(const MNCC__PDU& in)
+{
+ struct gsm_mncc mncc;
+ OCTETSTRING ret_val;
+
+ memset(&mncc, 0, sizeof(mncc));
+ mncc.msg_type = in.msg__type();
+
+ switch (in.u().get_selection()) {
+ case MNCC__MsgUnion::ALT_signal: {
+ const MNCC__PDU__Signal& in_sig = in.u().signal();
+ mncc.callref = in_sig.callref();
+ if (in_sig.bearer__cap().is_value()) {
+ enc_bcap(&mncc.bearer_cap, in_sig.bearer__cap());
+ mncc.fields |= MNCC_F_BEARER_CAP;
+ }
+ if (in_sig.called().is_value()) {
+ enc_number(&mncc.called, in_sig.called());
+ mncc.fields |= MNCC_F_CALLED;
+ }
+ if (in_sig.calling().is_value()) {
+ enc_number(&mncc.calling, in_sig.calling());
+ mncc.fields |= MNCC_F_CALLING;
+ }
+ if (in_sig.redirecting().is_value()) {
+ enc_number(&mncc.redirecting, in_sig.redirecting());
+ mncc.fields |= MNCC_F_REDIRECTING;
+ }
+ if (in_sig.connected().is_value()) {
+ enc_number(&mncc.connected, in_sig.connected());
+ mncc.fields |= MNCC_F_CONNECTED;
+ }
+ if (in_sig.cause().is_value()) {
+ const MNCC__cause &cause = in_sig.cause();
+ TTCN_Buffer ttcn_buffer(cause.diag());
+ mncc.cause.location = cause.location();
+ mncc.cause.coding = cause.coding();
+ mncc.cause.rec = cause.rec();
+ mncc.cause.rec_val = cause.rec__val();
+ mncc.cause.value = cause.val();
+ mncc.cause.diag_len = ttcn_buffer.get_len();
+ if (mncc.cause.diag_len > (int) sizeof(mncc.cause.diag)) {
+ TTCN_error("MNCC diagnostics length %u too long", mncc.cause.diag_len);
+ mncc.cause.diag_len = sizeof(mncc.cause.diag);
+ }
+ memcpy(mncc.cause.diag, ttcn_buffer.get_data(), ttcn_buffer.get_len());
+ mncc.fields |= MNCC_F_CAUSE;
+ }
+ if (in_sig.progress().is_value()) {
+ const MNCC__progress &progress = in_sig.progress();
+ mncc.progress.coding = progress.coding();
+ mncc.progress.location = progress.location();
+ mncc.progress.descr = progress.descr();
+ mncc.fields |= MNCC_F_PROGRESS;
+ }
+ if (in_sig.useruser().is_value()) {
+ const MNCC__useruser &useruser = in_sig.useruser();
+ mncc.useruser.proto = useruser.proto();
+ strncpy(mncc.useruser.info, useruser.info(), sizeof(mncc.useruser.info));
+ mncc.fields |= MNCC_F_USERUSER;
+ }
+ if (in_sig.facility().is_value()) {
+ const CHARSTRING &fac = in_sig.facility();
+ strncpy(mncc.facility.info, fac, sizeof(mncc.facility.info));
+ mncc.facility.len = strlen(mncc.facility.info);
+ mncc.fields |= MNCC_F_FACILITY;
+ }
+ if (in_sig.cccap().is_value()) {
+ const MNCC__cccap &cccap = in_sig.cccap();
+ mncc.cccap.dtmf = cccap.dtmf();
+ mncc.cccap.pcp = cccap.pcp();
+ mncc.fields |= MNCC_F_CCCAP;
+ }
+ if (in_sig.ssversion().is_value()) {
+ const CHARSTRING &ssv = in_sig.ssversion();
+ strncpy(mncc.ssversion.info, ssv, sizeof(mncc.ssversion.info));
+ mncc.ssversion.len = strlen(mncc.ssversion.info);
+ mncc.fields |= MNCC_F_SSVERSION;
+ }
+ mncc.clir.sup = in_sig.clir__sup();
+ mncc.clir.inv = in_sig.clir__inv();
+ if (in_sig.signal().is_value()) {
+ const INTEGER &sig = in_sig.signal();
+ mncc.signal = sig;
+ mncc.fields |= MNCC_F_SIGNAL;
+ }
+ if (in_sig.keypad().is_value()) {
+ const CHARSTRING &kpd = in_sig.keypad();
+ mncc.signal = (int) kpd[0].get_char();
+ mncc.fields |= MNCC_F_KEYPAD;
+ }
+ mncc.more = in_sig.more();
+ mncc.notify = in_sig.notify();
+ if (in_sig.emergency().is_value()) {
+ const INTEGER &emerg = in_sig.emergency();
+ mncc.emergency = emerg;
+ mncc.fields |= MNCC_F_EMERGENCY;
+ }
+ strncpy(mncc.imsi, in_sig.imsi(), sizeof(mncc.imsi));
+ mncc.lchan_type = in_sig.lchan__type();
+ mncc.lchan_mode = in_sig.lchan__mode();
+ ret_val = OCTETSTRING(sizeof(mncc), (uint8_t *)&mncc);
+ }
+ break;
+ case MNCC__MsgUnion::ALT_data:
+ struct gsm_data_frame data;
+ memset(&data, 0, sizeof(data));
+ data.msg_type = in.msg__type();
+ ret_val = OCTETSTRING(sizeof(data), (uint8_t *)&data);
+ ret_val = ret_val & in.u().data().data();
+ break;
+ case MNCC__MsgUnion::ALT_rtp:
+ struct gsm_mncc_rtp rtp;
+ memset(&rtp, 0, sizeof(rtp));
+ rtp.msg_type = in.msg__type();
+ rtp.callref = in.u().rtp().callref();
+ rtp.ip = in.u().rtp().ip();
+ rtp.port = in.u().rtp().rtp__port();
+ rtp.payload_type = in.u().rtp().payload__type();
+ rtp.payload_msg_type = in.u().rtp().payload__msg__type();
+ ret_val = OCTETSTRING(sizeof(rtp), (uint8_t *) &rtp);
+ break;
+ case MNCC__MsgUnion::ALT_hello:
+ struct gsm_mncc_hello hello;
+ memset(&hello, 0, sizeof(hello));
+ hello.msg_type = in.msg__type();
+ hello.version = in.u().hello().version();
+ hello.mncc_size = in.u().hello().mncc__size();
+ hello.data_frame_size = in.u().hello().data__frame__size();
+ hello.called_offset = in.u().hello().called__offset();
+ hello.signal_offset = in.u().hello().signal__offset();
+ hello.emergency_offset = in.u().hello().emergency__offset();
+ hello.lchan_type_offset = in.u().hello().lchan__type__offset();
+ ret_val = OCTETSTRING(sizeof(hello), (uint8_t *) &hello);
+ break;
+ }
+
+ return ret_val;
+}
+
+MNCC__PDU dec__MNCC__PDU(const OCTETSTRING& in)
+{
+ TTCN_Buffer ttcn_buffer(in);
+ const struct gsm_mncc *in_mncc;
+ MNCC__PDU__Signal sign;
+ const struct gsm_mncc_hello *in_hello;
+ MNCC__PDU__Hello hello;
+ const struct gsm_data_frame *in_data;
+ MNCC__PDU__Data data;
+ const struct gsm_mncc_rtp *in_rtp;
+ MNCC__PDU__Rtp rtp;
+ MNCC__MsgUnion u;
+
+ in_mncc = (struct gsm_mncc *) ttcn_buffer.get_read_data();
+
+ sign.set_implicit_omit();
+ hello.set_implicit_omit();
+ data.set_implicit_omit();
+ rtp.set_implicit_omit();
+
+ switch (in_mncc->msg_type) {
+ case MNCC_SOCKET_HELLO:
+ in_hello = (const struct gsm_mncc_hello *) in_mncc;
+ hello = MNCC__PDU__Hello(in_hello->version,
+ in_hello->mncc_size,
+ in_hello->data_frame_size,
+ in_hello->called_offset,
+ in_hello->signal_offset,
+ in_hello->emergency_offset,
+ in_hello->lchan_type_offset);
+ u.hello() = hello;
+ break;
+ case GSM_TCHF_FRAME:
+ case GSM_TCHF_FRAME_EFR:
+ case GSM_TCHH_FRAME:
+ case GSM_TCH_FRAME_AMR:
+ case GSM_BAD_FRAME:
+ in_data = (const struct gsm_data_frame *) in_mncc;
+ u.data() = MNCC__PDU__Data(in_data->callref,
+ substr(in, offsetof(struct gsm_data_frame, data),
+ in.lengthof() - offsetof(struct gsm_data_frame, data)));
+ break;
+ case MNCC_RTP_CREATE:
+ case MNCC_RTP_CONNECT:
+ case MNCC_RTP_FREE:
+ in_rtp = (const struct gsm_mncc_rtp *) in_mncc;
+ rtp = MNCC__PDU__Rtp(in_rtp->callref, in_rtp->ip, in_rtp->port, in_rtp->payload_type,
+ in_rtp->payload_msg_type);
+ u.rtp() = rtp;
+ break;
+ default:
+ sign.callref() = in_mncc->callref;
+ if (in_mncc->fields & MNCC_F_BEARER_CAP) {
+ sign.bearer__cap() = dec_bcap(&in_mncc->bearer_cap);
+ }
+ if (in_mncc->fields & MNCC_F_CALLED)
+ sign.called() = dec_number(&in_mncc->called);
+ if (in_mncc->fields & MNCC_F_CALLING)
+ sign.calling() = dec_number(&in_mncc->calling);
+ if (in_mncc->fields & MNCC_F_REDIRECTING)
+ sign.redirecting() = dec_number(&in_mncc->redirecting);
+ if (in_mncc->fields & MNCC_F_CONNECTED)
+ sign.connected() = dec_number(&in_mncc->connected);
+ if (in_mncc->fields & MNCC_F_CAUSE) {
+ sign.cause() = MNCC__cause(in_mncc->cause.location,
+ in_mncc->cause.coding,
+ in_mncc->cause.rec,
+ in_mncc->cause.rec_val,
+ in_mncc->cause.value,
+ OCTETSTRING(in_mncc->cause.diag_len,
+ (const uint8_t *)in_mncc->cause.diag));
+ }
+ if (in_mncc->fields & MNCC_F_USERUSER) {
+ sign.useruser() = MNCC__useruser(in_mncc->useruser.proto,
+ CHARSTRING(in_mncc->useruser.info));
+ }
+ if (in_mncc->fields & MNCC_F_PROGRESS) {
+ sign.progress() = MNCC__progress(in_mncc->progress.coding,
+ in_mncc->progress.location,
+ in_mncc->progress.descr);
+ }
+ if (in_mncc->fields & MNCC_F_EMERGENCY)
+ sign.emergency() = in_mncc->emergency;
+ if (in_mncc->fields & MNCC_F_FACILITY)
+ sign.facility() = CHARSTRING(in_mncc->facility.info);
+ if (in_mncc->fields & MNCC_F_SSVERSION)
+ sign.ssversion() = CHARSTRING(in_mncc->ssversion.info);
+ if (in_mncc->fields & MNCC_F_CCCAP)
+ sign.cccap() = MNCC__cccap(in_mncc->cccap.dtmf, in_mncc->cccap.pcp);
+ if (in_mncc->fields & MNCC_F_KEYPAD) {
+ char kpd[2] = { (char) in_mncc->keypad, 0 };
+ sign.keypad() = CHARSTRING(kpd);
+ }
+ if (in_mncc->fields & MNCC_F_SIGNAL)
+ sign.signal() = in_mncc->signal;
+
+ sign.clir__sup() = in_mncc->clir.sup;
+ sign.clir__inv() = in_mncc->clir.inv;
+ sign.more() = in_mncc->more;
+ sign.notify() = in_mncc->notify;
+ sign.imsi() = CHARSTRING(in_mncc->imsi);
+ sign.lchan__type() = in_mncc->lchan_type;
+ sign.lchan__mode() = in_mncc->lchan_mode;
+ u.signal() = sign;
+ break;
+ }
+ return MNCC__PDU(in_mncc->msg_type, u);
+}
+
+}
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