1 files changed, 29 insertions, 23 deletions

diff --git a/src/lib/protocols/dhcp.c b/src/lib/protocols/dhcp.c
index 02ce00f25..6ac07e832 100644
--- a/src/lib/protocols/dhcp.c
+++ b/src/lib/protocols/dhcp.c
@@ -102,34 +102,40 @@ void ndpi_search_dhcp_udp(struct ndpi_detection_module_struct *ndpi_struct, stru
 
 	    if(msg_type <= 8) foundValidMsgType = 1;
 	  } else if(id == 55 /* Parameter Request List / Fingerprint */) {
-	    u_int idx, offset = 0;
-
-	    for(idx = 0; idx < len && offset < sizeof(flow->protos.dhcp.fingerprint) - 2; idx++) {
-	      snprintf((char*)&flow->protos.dhcp.fingerprint[offset],
-		       sizeof(flow->protos.dhcp.fingerprint) - offset,
-		       "%02X", dhcp->options[i+2+idx] & 0xFF);
-	      offset += 2;
+	    if(!ndpi_struct->disable_metadata_export) {
+	      u_int idx, offset = 0;
+	      
+	      for(idx = 0; idx < len && offset < sizeof(flow->protos.dhcp.fingerprint) - 2; idx++) {
+		snprintf((char*)&flow->protos.dhcp.fingerprint[offset],
+			 sizeof(flow->protos.dhcp.fingerprint) - offset,
+			 "%02X", dhcp->options[i+2+idx] & 0xFF);
+		offset += 2;
+	      }
+	      
+	      flow->protos.dhcp.fingerprint[sizeof(flow->protos.dhcp.fingerprint) - 1] = '\0';
 	    }
-	    flow->protos.dhcp.fingerprint[sizeof(flow->protos.dhcp.fingerprint) - 1] = '\0';
-
 	  } else if(id == 60 /* Class Identifier */) {
-	    char *name = (char*)&dhcp->options[i+2];
-	    int j = 0;
-
-	    j = ndpi_min(len, sizeof(flow->protos.dhcp.class_ident)-1);
-	    strncpy((char*)flow->protos.dhcp.class_ident, name, j);
-	    flow->protos.dhcp.class_ident[j] = '\0';
+	    if(!ndpi_struct->disable_metadata_export) {
+	      char *name = (char*)&dhcp->options[i+2];
+	      int j = 0;
+	      
+	      j = ndpi_min(len, sizeof(flow->protos.dhcp.class_ident)-1);
+	      strncpy((char*)flow->protos.dhcp.class_ident, name, j);
+	      flow->protos.dhcp.class_ident[j] = '\0';
+	    }
 	  } else if(id == 12 /* Host Name */) {
-	    char *name = (char*)&dhcp->options[i+2];
-	    int j = 0;
-
+	    if(!ndpi_struct->disable_metadata_export) {
+	      char *name = (char*)&dhcp->options[i+2];
+	      int j = 0;
+	      
 #ifdef DHCP_DEBUG
-	    NDPI_LOG_DBG2(ndpi_struct, "[DHCP] '%.*s'\n",name,len);
-//	    while(j < len) { printf( "%c", name[j]); j++; }; printf("\n");
+	      NDPI_LOG_DBG2(ndpi_struct, "[DHCP] '%.*s'\n",name,len);
+	      //	    while(j < len) { printf( "%c", name[j]); j++; }; printf("\n");
 #endif
-	    j = ndpi_min(len, sizeof(flow->host_server_name)-1);
-	    strncpy((char*)flow->host_server_name, name, j);
-	    flow->host_server_name[j] = '\0';
+	      j = ndpi_min(len, sizeof(flow->host_server_name)-1);
+	      strncpy((char*)flow->host_server_name, name, j);
+	      flow->host_server_name[j] = '\0';
+	    }
 	  }
 
 	  i += len + 2;