<p>Keith Whyte has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/10727">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">Add SIP <-> MNCC Cause Map<br><br>Implements a cause_map, mapping the SIP status codes<br>to GSM48_CC_CAUSE_* that are defined in libosmocore.<br>The map at the same time implements the Q.850 cause texts<br>that are subsequently used in the SIP Reason: header.<br><br>Implements two functions cause2status() and status2cause()<br>to read the map and return the the mapped status.<br><br>The mapping mostly follows the implemention in the LCR program,<br>so that any implementation relying on that mapping should<br>continue to work as expected with osmo-sip-connector.<br><br>Change-Id: Id82be8603a30a6aec28fc0258236c1746973db58<br>---<br>M src/sip.c<br>1 file changed, 88 insertions(+), 0 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/osmo-sip-connector refs/changes/27/10727/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/src/sip.c b/src/sip.c</span><br><span>index 84d1f6e..7e456d9 100644</span><br><span>--- a/src/sip.c</span><br><span>+++ b/src/sip.c</span><br><span>@@ -148,6 +148,75 @@</span><br><span> talloc_strdup(leg, to));</span><br><span> }</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+/* Sofia SIP definitions come with error code numbers and strings, this</span><br><span style="color: hsl(120, 100%, 40%);">+ * map allows us to reuse the existing definitions.</span><br><span style="color: hsl(120, 100%, 40%);">+ * The map is in priority order. The first matching entry found</span><br><span style="color: hsl(120, 100%, 40%);">+ * will be used.</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+static struct cause_map {</span><br><span style="color: hsl(120, 100%, 40%);">+ int sip_status;</span><br><span style="color: hsl(120, 100%, 40%);">+ const char *sip_phrase;</span><br><span style="color: hsl(120, 100%, 40%);">+ int gsm48_cause;</span><br><span style="color: hsl(120, 100%, 40%);">+ const char *q850_reason;</span><br><span style="color: hsl(120, 100%, 40%);">+} cause_map[] = {</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_200_OK, GSM48_CC_CAUSE_NORM_CALL_CLEAR, "Normal Call Clearing" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_403_FORBIDDEN, GSM48_CC_CAUSE_CALL_REJECTED, "Call Rejected" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_401_UNAUTHORIZED, GSM48_CC_CAUSE_CALL_REJECTED, "Call Rejected" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_402_PAYMENT_REQUIRED, GSM48_CC_CAUSE_CALL_REJECTED, "Call Rejected" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_407_PROXY_AUTH_REQUIRED, GSM48_CC_CAUSE_CALL_REJECTED, "Call Rejected" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_603_DECLINE, GSM48_CC_CAUSE_CALL_REJECTED, "Call Rejected" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_406_NOT_ACCEPTABLE, GSM48_CC_CAUSE_CHAN_UNACCEPT, "Channel Unacceptable" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_404_NOT_FOUND, GSM48_CC_CAUSE_UNASSIGNED_NR, "Unallocated Number" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_485_AMBIGUOUS, GSM48_CC_CAUSE_NO_ROUTE, "No Route to Destination" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_604_DOES_NOT_EXIST_ANYWHERE, GSM48_CC_CAUSE_NO_ROUTE, "No Route to Destination" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_504_GATEWAY_TIME_OUT, GSM48_CC_CAUSE_RECOVERY_TIMER, "Recovery on Timer Expiry" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_408_REQUEST_TIMEOUT, GSM48_CC_CAUSE_RECOVERY_TIMER, "Recovery on Timer Expiry" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_410_GONE, GSM48_CC_CAUSE_NUMBER_CHANGED, "Number Changed" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_416_UNSUPPORTED_URI, GSM48_CC_CAUSE_INVAL_TRANS_ID, "Invalid Call Reference Value" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_420_BAD_EXTENSION, GSM48_CC_CAUSE_INTERWORKING, "Interworking, Unspecified" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_414_REQUEST_URI_TOO_LONG, GSM48_CC_CAUSE_INTERWORKING, "Interworking, Unspecified" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_413_REQUEST_TOO_LARGE, GSM48_CC_CAUSE_INTERWORKING, "Interworking, Unspecified" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_421_EXTENSION_REQUIRED, GSM48_CC_CAUSE_INTERWORKING, "Interworking, Unspecified" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_423_INTERVAL_TOO_BRIEF, GSM48_CC_CAUSE_INTERWORKING, "Interworking, Unspecified" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_505_VERSION_NOT_SUPPORTED, GSM48_CC_CAUSE_INTERWORKING, "Interworking, Unspecified" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_513_MESSAGE_TOO_LARGE, GSM48_CC_CAUSE_INTERWORKING, "Interworking, Unspecified" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_480_TEMPORARILY_UNAVAILABLE, GSM48_CC_CAUSE_USER_NOTRESPOND, "No User Responding" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_503_SERVICE_UNAVAILABLE, GSM48_CC_CAUSE_RESOURCE_UNAVAIL,"Resource Unavailable, Unspecified" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_503_SERVICE_UNAVAILABLE, GSM48_CC_CAUSE_TEMP_FAILURE, "Temporary Failure" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_503_SERVICE_UNAVAILABLE, GSM48_CC_CAUSE_SWITCH_CONG, "Switching Equipment Congestion" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_400_BAD_REQUEST, GSM48_CC_CAUSE_TEMP_FAILURE, "Temporary Failure" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_481_NO_CALL, GSM48_CC_CAUSE_TEMP_FAILURE, "Temporary Failure" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_500_INTERNAL_SERVER_ERROR, GSM48_CC_CAUSE_TEMP_FAILURE, "Temporary Failure" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_486_BUSY_HERE, GSM48_CC_CAUSE_USER_BUSY, "User Busy" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_600_BUSY_EVERYWHERE, GSM48_CC_CAUSE_USER_BUSY, "User Busy" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_484_ADDRESS_INCOMPLETE, GSM48_CC_CAUSE_INV_NR_FORMAT, "Invalid Number Format (addr incomplete)" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_488_NOT_ACCEPTABLE, GSM48_CC_CAUSE_INCOMPAT_DEST, "Incompatible Destination" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_606_NOT_ACCEPTABLE, GSM48_CC_CAUSE_INCOMPAT_DEST, "Incompatible Destination" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_502_BAD_GATEWAY, GSM48_CC_CAUSE_DEST_OOO, "Destination Out of Order" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_503_SERVICE_UNAVAILABLE, GSM48_CC_CAUSE_NETWORK_OOO, "Network Out of Order" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_405_METHOD_NOT_ALLOWED, GSM48_CC_CAUSE_SERV_OPT_UNAVAIL,"Service or Option Not Implemented" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_501_NOT_IMPLEMENTED, GSM48_CC_CAUSE_SERV_OPT_UNIMPL, "Service or Option Not Implemented" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_415_UNSUPPORTED_MEDIA, GSM48_CC_CAUSE_SERV_OPT_UNIMPL, "Service or Option Not Implemented" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_406_NOT_ACCEPTABLE, GSM48_CC_CAUSE_SERV_OPT_UNIMPL, "Service or Option Not Implemented" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_482_LOOP_DETECTED, GSM48_CC_CAUSE_PRE_EMPTION, "Exchange Routing Error" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_483_TOO_MANY_HOPS, GSM48_CC_CAUSE_PRE_EMPTION, "Exchange Routing Error" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_503_SERVICE_UNAVAILABLE, GSM48_CC_CAUSE_BEARER_CA_UNAVAIL,"Bearer Capability Not Available" },</span><br><span style="color: hsl(120, 100%, 40%);">+ { SIP_480_TEMPORARILY_UNAVAILABLE, GSM48_CC_CAUSE_NORMAL_UNSPEC, "Normal, Unspecified" }</span><br><span style="color: hsl(120, 100%, 40%);">+};</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+static int status2cause(int status)</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ uint8_t i;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ for (i = 0; i < ARRAY_SIZE(cause_map) - 1; i++) {</span><br><span style="color: hsl(120, 100%, 40%);">+ if (cause_map[i].sip_status == status) {</span><br><span style="color: hsl(120, 100%, 40%);">+ return cause_map[i].gsm48_cause;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ return GSM48_CC_CAUSE_NORMAL_UNSPEC;</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span> void nua_callback(nua_event_t event, int status, char const *phrase, nua_t *nua, nua_magic_t *magic, nua_handle_t *nh, nua_hmagic_t *hmagic, sip_t const *sip, tagi_t tags[])</span><br><span> {</span><br><span> LOGP(DSIP, LOGL_DEBUG, "SIP event(%u) status(%d) phrase(%s) %p\n",</span><br><span>@@ -217,6 +286,25 @@</span><br><span> }</span><br><span> }</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+static void cause2status(int cause, int *sip_status, const char **sip_phrase, const char **reason_text)</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ uint8_t i;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ for (i = 0; i < ARRAY_SIZE(cause_map) - 1; i++) {</span><br><span style="color: hsl(120, 100%, 40%);">+ if (cause_map[i].gsm48_cause == cause) {</span><br><span style="color: hsl(120, 100%, 40%);">+ *sip_status = cause_map[i].sip_status;</span><br><span style="color: hsl(120, 100%, 40%);">+ *sip_phrase = cause_map[i].sip_phrase;</span><br><span style="color: hsl(120, 100%, 40%);">+ *reason_text = cause_map[i].q850_reason;</span><br><span style="color: hsl(120, 100%, 40%);">+ LOGP(DSIP, LOGL_DEBUG, "%s(): Mapping cause(%d) to status(%d)\n",</span><br><span style="color: hsl(120, 100%, 40%);">+ __func__, cause, *sip_status);</span><br><span style="color: hsl(120, 100%, 40%);">+ return;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+ LOGP(DSIP, LOGL_DEBUG, "%s(): Cause(%d) not found in map.\n", __func__, cause);</span><br><span style="color: hsl(120, 100%, 40%);">+ *sip_status = cause_map[i].sip_status;</span><br><span style="color: hsl(120, 100%, 40%);">+ *sip_phrase = cause_map[i].sip_phrase;</span><br><span style="color: hsl(120, 100%, 40%);">+ *reason_text = cause_map[i].q850_reason;</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span> </span><br><span> static void sip_release_call(struct call_leg *_leg)</span><br><span> {</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/10727">change 10727</a>. To unsubscribe, or for help writing mail filters, visit <a href="https://gerrit.osmocom.org/settings">settings</a>.</p><div itemscope itemtype="http://schema.org/EmailMessage"><div itemscope itemprop="action" itemtype="http://schema.org/ViewAction"><link itemprop="url" href="https://gerrit.osmocom.org/10727"/><meta itemprop="name" content="View Change"/></div></div>
<div style="display:none"> Gerrit-Project: osmo-sip-connector </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>
<div style="display:none"> Gerrit-Change-Id: Id82be8603a30a6aec28fc0258236c1746973db58 </div>
<div style="display:none"> Gerrit-Change-Number: 10727 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: Keith Whyte <keith@rhizomatica.org> </div>