kemix: exported get_srcuri() to kemi

- return source address in uri format, similar to $su

src/modules/kemix/kemix_mod.c

@@ -27,6 +27,7 @@
 
 #include "../../core/sr_module.h"
 #include "../../core/dprint.h"
+#include "../../core/pvapi.h"
 #include "../../core/kemi.h"
 #include "../../core/ppcfg.h"
 #include "../../core/parser/parse_uri.h"
@@ -1066,6 +1067,39 @@ static sr_kemi_xval_t* ki_kx_gete_cturi(sip_msg_t *msg)
 	return ki_kx_get_cturi_mode(msg, SR_KEMI_XVAL_NULL_EMPTY);
 }
 
+/**
+ *
+ */
+static sr_kemi_xval_t* ki_kx_get_srcuri(sip_msg_t *msg)
+{
+	str ssock;
+
+	if(msg==NULL) {
+		sr_kemi_xval_null(&_sr_kemi_kx_xval, SR_KEMI_XVAL_NULL_EMPTY);
+		return &_sr_kemi_kx_xval;
+
+	}
+
+	if(get_src_uri(msg, 0, &ssock)<0) {
+		sr_kemi_xval_null(&_sr_kemi_kx_xval, SR_KEMI_XVAL_NULL_EMPTY);
+		return &_sr_kemi_kx_xval;
+	}
+
+	if (ssock.len + 1 >= pv_get_buffer_size()) {
+		LM_ERR("local buffer size exceeded\n");
+		sr_kemi_xval_null(&_sr_kemi_kx_xval, SR_KEMI_XVAL_NULL_EMPTY);
+		return &_sr_kemi_kx_xval;
+	}
+
+	_sr_kemi_kx_xval.v.s.s = pv_get_buffer();
+	strncpy(_sr_kemi_kx_xval.v.s.s, ssock.s, ssock.len);
+	_sr_kemi_kx_xval.v.s.len = ssock.len;
+	_sr_kemi_kx_xval.v.s.s[_sr_kemi_kx_xval.v.s.len] = '\0';
+
+	_sr_kemi_kx_xval.vtype = SR_KEMIP_STR;
+	return &_sr_kemi_kx_xval;
+}
+
 /**
  *
  */
@@ -1301,6 +1335,11 @@ static sr_kemi_t sr_kemi_kx_exports[] = {
 		{ SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE,
 			SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE }
 	},
+	{ str_init("kx"), str_init("get_srcuri"),
+		SR_KEMIP_XVAL, ki_kx_get_srcuri,
+		{ SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE,
+			SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE }
+	},
 	{ str_init("kx"), str_init("get_ua"),
 		SR_KEMIP_XVAL, ki_kx_get_ua,
 		{ SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE,