Fix Nssai decoder

src/ngap/ngapIEs/S-NSSAI.cpp

@@ -76,7 +76,18 @@ bool S_NSSAI::sDEncode2OctetString(Ngap_SD_t* m_sd) {
 //------------------------------------------------------------------------------
 bool S_NSSAI::sDdecodefromOctetString(Ngap_SD_t* m_sd) {
   if (!m_sd->buf) return false;
-  sd = *(uint32_t*) m_sd->buf & 0x00ffffff;
+  if (m_sd->size == 3) {
+    sd = 0x00ffffff &&
+         (((m_sd->buf[0] & 0x00ff0000) >> 16) |
+          ((m_sd->buf[1] & 0x0000ff00) >> 8) | (m_sd->buf[2] & 0x000000ff));
+
+  } else if (m_sd->size == 4) {
+    sd = 0x00ffffff &&
+         (((m_sd->buf[1] & 0x00ff0000) >> 16) |
+          ((m_sd->buf[2] & 0x0000ff00) >> 8) | (m_sd->buf[3] & 0x000000ff));
+  }
+  //  sd = *(uint32_t*) m_sd->buf & 0x00ffffff;
+
   return true;
 }