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-rw-r--r--src/include/ndpi_api.h10
-rw-r--r--src/include/ndpi_typedefs.h16
-rw-r--r--src/lib/ndpi_main.c31
-rw-r--r--src/lib/protocols/bittorrent.c7
-rw-r--r--src/lib/protocols/dhcp.c52
-rw-r--r--src/lib/protocols/http.c25
-rw-r--r--src/lib/protocols/mdns.c10
-rw-r--r--src/lib/protocols/netbios.c18
-rw-r--r--src/lib/protocols/quic.c27
-rw-r--r--src/lib/protocols/ssh.c22
-rw-r--r--src/lib/protocols/ssl.c16
-rw-r--r--src/lib/protocols/ubntac2.c10
-rw-r--r--src/lib/protocols/whoisdas.c11
13 files changed, 168 insertions, 87 deletions
diff --git a/src/include/ndpi_api.h b/src/include/ndpi_api.h
index bdb351df4..c2c129ec0 100644
--- a/src/include/ndpi_api.h
+++ b/src/include/ndpi_api.h
@@ -35,7 +35,7 @@ extern "C" {
sure that datastructures and in sync across versions
*/
#define NDPI_API_VERSION 1
-
+
#define SIZEOF_ID_STRUCT ( sizeof(struct ndpi_id_struct) )
#define SIZEOF_FLOW_STRUCT ( sizeof(struct ndpi_flow_struct) )
@@ -748,7 +748,7 @@ extern "C" {
*
*/
int ndpi_match_string(void *_automa, char *string_to_match);
-
+
void ndpi_load_ip_category(struct ndpi_detection_module_struct *ndpi_struct,
char *ip_address_and_mask, ndpi_protocol_category_t category);
int ndpi_load_hostname_category(struct ndpi_detection_module_struct *ndpi_struct,
@@ -756,7 +756,11 @@ extern "C" {
int ndpi_enable_loaded_categories(struct ndpi_detection_module_struct *ndpi_struct);
void ndpi_fill_protocol_category(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow,
- ndpi_protocol *ret);
+ ndpi_protocol *ret);
+ int ndpi_set_detection_preferences(struct ndpi_detection_module_struct *ndpi_mod,
+ ndpi_detection_preference pref,
+ int value);
+
/**
* Add a string to match to an automata
*
diff --git a/src/include/ndpi_typedefs.h b/src/include/ndpi_typedefs.h
index 869a198f7..83fad2930 100644
--- a/src/include/ndpi_typedefs.h
+++ b/src/include/ndpi_typedefs.h
@@ -797,6 +797,13 @@ typedef enum {
*/
} ndpi_protocol_category_t;
+typedef enum {
+ ndpi_pref_http_dont_dissect_response = 0,
+ ndpi_pref_dns_dissect_response,
+ ndpi_pref_direction_detect_disable,
+ ndpi_pref_disable_metadata_export
+} ndpi_detection_preference;
+
/* ntop extensions */
typedef struct ndpi_proto_defaults {
char *protoName;
@@ -952,8 +959,10 @@ struct ndpi_detection_module_struct {
ndpi_proto_defaults_t proto_defaults[NDPI_MAX_SUPPORTED_PROTOCOLS+NDPI_MAX_NUM_CUSTOM_PROTOCOLS];
u_int8_t http_dont_dissect_response:1, dns_dissect_response:1,
- direction_detect_disable:1; /* disable internal detection of packet direction */
-
+ direction_detect_disable:1, /* disable internal detection of packet direction */
+ disable_metadata_export:1 /* No metadata is exported */
+ ;
+
void *hyperscan; /* Intel Hyperscan */
};
@@ -989,8 +998,7 @@ struct ndpi_flow_struct {
} l4;
/*
- Pointer to src or dst
- that identifies the
+ Pointer to src or dst that identifies the
server of this connection
*/
struct ndpi_id_struct *server_id;
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index e52fc5632..0205a6354 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -864,6 +864,35 @@ static void init_string_based_protocols(struct ndpi_detection_module_struct *ndp
/* ******************************************************************** */
+int ndpi_set_detection_preferences(struct ndpi_detection_module_struct *ndpi_mod,
+ ndpi_detection_preference pref,
+ int value) {
+ switch(pref) {
+ case ndpi_pref_http_dont_dissect_response:
+ ndpi_mod->http_dont_dissect_response = (u_int8_t)value;
+ break;
+
+ case ndpi_pref_dns_dissect_response:
+ ndpi_mod->dns_dissect_response = (u_int8_t)value;
+ break;
+
+ case ndpi_pref_direction_detect_disable:
+ ndpi_mod->direction_detect_disable = (u_int8_t)value;
+ break;
+
+ case ndpi_pref_disable_metadata_export:
+ ndpi_mod->disable_metadata_export = (u_int8_t)value;
+ break;
+
+ default:
+ return(-1);
+ }
+
+ return(0);
+}
+
+/* ******************************************************************** */
+
/* This function is used to map protocol name and default ports and it MUST
be updated whenever a new protocol is added to NDPI.
@@ -3782,7 +3811,7 @@ ndpi_protocol ndpi_detection_giveup(struct ndpi_detection_module_struct *ndpi_st
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_STUN, flow->guessed_host_protocol_id);
}
}
-
+
ret.master_protocol = flow->detected_protocol_stack[1], ret.app_protocol = flow->detected_protocol_stack[0];
return(ret);
diff --git a/src/lib/protocols/bittorrent.c b/src/lib/protocols/bittorrent.c
index 81fc3baf6..fceafc188 100644
--- a/src/lib/protocols/bittorrent.c
+++ b/src/lib/protocols/bittorrent.c
@@ -57,7 +57,8 @@ static u_int8_t is_utp_pkt(const u_int8_t *payload, u_int payload_len) {
return(1);
}
-static void ndpi_add_connection_as_bittorrent(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow,
+static void ndpi_add_connection_as_bittorrent(struct ndpi_detection_module_struct *ndpi_struct,
+ struct ndpi_flow_struct *flow,
int bt_offset, int check_hash,
const u_int8_t save_detection, const u_int8_t encrypted_connection)
{
@@ -73,7 +74,9 @@ static void ndpi_add_connection_as_bittorrent(struct ndpi_detection_module_struc
} else
bt_hash = (const char*)&flow->packet.payload[28];
- if(bt_hash) memcpy(flow->protos.bittorrent.hash, bt_hash, 20);
+ if(!ndpi_struct->disable_metadata_export) {
+ if(bt_hash) memcpy(flow->protos.bittorrent.hash, bt_hash, 20);
+ }
}
ndpi_int_change_protocol(ndpi_struct, flow, NDPI_PROTOCOL_BITTORRENT, NDPI_PROTOCOL_UNKNOWN);
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;
diff --git a/src/lib/protocols/http.c b/src/lib/protocols/http.c
index 7332c5e04..d2311b3db 100644
--- a/src/lib/protocols/http.c
+++ b/src/lib/protocols/http.c
@@ -156,7 +156,8 @@ static void rtsp_parse_packet_acceptline(struct ndpi_detection_module_struct
}
#endif
-static void setHttpUserAgent(struct ndpi_flow_struct *flow, char *ua) {
+static void setHttpUserAgent(struct ndpi_detection_module_struct *ndpi_struct,
+ struct ndpi_flow_struct *flow, char *ua) {
if ( !strcmp(ua, "Windows NT 5.0")) ua = "Windows 2000";
else if(!strcmp(ua, "Windows NT 5.1")) ua = "Windows XP";
else if(!strcmp(ua, "Windows NT 5.2")) ua = "Windows Server 2003";
@@ -170,7 +171,9 @@ static void setHttpUserAgent(struct ndpi_flow_struct *flow, char *ua) {
* https://github.com/ua-parser/uap-core/blob/master/regexes.yaml */
//printf("==> %s\n", ua);
- snprintf((char*)flow->protos.http.detected_os, sizeof(flow->protos.http.detected_os), "%s", ua);
+ if(!ndpi_struct->disable_metadata_export) {
+ snprintf((char*)flow->protos.http.detected_os, sizeof(flow->protos.http.detected_os), "%s", ua);
+ }
}
static void parseHttpSubprotocol(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) {
@@ -330,7 +333,7 @@ static void check_content_type_and_change_protocol(struct ndpi_detection_module_
}
if(token)
- setHttpUserAgent(flow, token);
+ setHttpUserAgent(ndpi_struct, flow, token);
}
}
}
@@ -360,14 +363,20 @@ static void check_content_type_and_change_protocol(struct ndpi_detection_module_
NDPI_PROTOCOL_HTTP);
/* Copy result for nDPI apps */
- len = ndpi_min(packet->host_line.len, sizeof(flow->host_server_name)-1);
- strncpy((char*)flow->host_server_name, (char*)packet->host_line.ptr, len);
- flow->host_server_name[len] = '\0', flow->server_id = flow->dst;
+ if(!ndpi_struct->disable_metadata_export) {
+ len = ndpi_min(packet->host_line.len, sizeof(flow->host_server_name)-1);
+ strncpy((char*)flow->host_server_name, (char*)packet->host_line.ptr, len);
+ flow->host_server_name[len] = '\0';
+ }
+
+ flow->server_id = flow->dst;
if(packet->forwarded_line.ptr) {
len = ndpi_min(packet->forwarded_line.len, sizeof(flow->protos.http.nat_ip)-1);
- strncpy((char*)flow->protos.http.nat_ip, (char*)packet->forwarded_line.ptr, len);
- flow->protos.http.nat_ip[len] = '\0';
+ if(!ndpi_struct->disable_metadata_export) {
+ strncpy((char*)flow->protos.http.nat_ip, (char*)packet->forwarded_line.ptr, len);
+ flow->protos.http.nat_ip[len] = '\0';
+ }
}
if(ndpi_struct->http_dont_dissect_response)
diff --git a/src/lib/protocols/mdns.c b/src/lib/protocols/mdns.c
index aa3c3f525..17a6d921d 100644
--- a/src/lib/protocols/mdns.c
+++ b/src/lib/protocols/mdns.c
@@ -86,10 +86,12 @@ static int ndpi_int_check_mdns_payload(struct ndpi_detection_module_struct
/* printf("==> [%d] %s\n", j, answer); */
- len = ndpi_min(sizeof(flow->protos.mdns.answer)-1, j);
- strncpy(flow->protos.mdns.answer, (const char *)answer, len);
- flow->protos.mdns.answer[len] = '\0';
-
+ if(!ndpi_struct->disable_metadata_export) {
+ len = ndpi_min(sizeof(flow->protos.mdns.answer)-1, j);
+ strncpy(flow->protos.mdns.answer, (const char *)answer, len);
+ flow->protos.mdns.answer[len] = '\0';
+ }
+
NDPI_LOG_INFO(ndpi_struct, "found MDNS with answer query\n");
return 1;
}
diff --git a/src/lib/protocols/netbios.c b/src/lib/protocols/netbios.c
index d10a33b1a..634284121 100644
--- a/src/lib/protocols/netbios.c
+++ b/src/lib/protocols/netbios.c
@@ -119,9 +119,12 @@ void ndpi_search_netbios(struct ndpi_detection_module_struct *ndpi_struct, struc
NDPI_LOG_INFO(ndpi_struct, "found netbios with questions = 1 and answers = 0, authority = 0 and broadcast \n");
- if(ndpi_netbios_name_interpret((char*)&packet->payload[12], name, sizeof(name)) > 0)
- snprintf((char*)flow->host_server_name, sizeof(flow->host_server_name)-1, "%s", name);
-
+ if(ndpi_netbios_name_interpret((char*)&packet->payload[12], name, sizeof(name)) > 0) {
+ if(!ndpi_struct->disable_metadata_export) {
+ snprintf((char*)flow->host_server_name, sizeof(flow->host_server_name)-1, "%s", name);
+ }
+ }
+
ndpi_int_netbios_add_connection(ndpi_struct, flow);
return;
}
@@ -336,9 +339,12 @@ void ndpi_search_netbios(struct ndpi_detection_module_struct *ndpi_struct, struc
if(ntohl(get_u_int32_t(packet->payload, 4)) == ntohl(packet->iph->saddr)) {
NDPI_LOG_INFO(ndpi_struct, "found netbios with checked ip-address\n");
- if(ndpi_netbios_name_interpret((char*)&packet->payload[12], name, sizeof(name)) > 0)
- snprintf((char*)flow->host_server_name, sizeof(flow->host_server_name)-1, "%s", name);
-
+ if(ndpi_netbios_name_interpret((char*)&packet->payload[12], name, sizeof(name)) > 0) {
+ if(!ndpi_struct->disable_metadata_export) {
+ snprintf((char*)flow->host_server_name, sizeof(flow->host_server_name)-1, "%s", name);
+ }
+ }
+
ndpi_int_netbios_add_connection(ndpi_struct, flow);
return;
}
diff --git a/src/lib/protocols/quic.c b/src/lib/protocols/quic.c
index 203aead36..6bf5cb0b2 100644
--- a/src/lib/protocols/quic.c
+++ b/src/lib/protocols/quic.c
@@ -107,20 +107,21 @@ void ndpi_search_quic(struct ndpi_detection_module_struct *ndpi_struct,
sni_offset++;
if((sni_offset+len) < udp_len) {
- int max_len = sizeof(flow->host_server_name)-1, j = 0;
-
- if(len > max_len) len = max_len;
-
- while((len > 0) && (sni_offset < udp_len)) {
- flow->host_server_name[j++] = packet->payload[sni_offset];
- sni_offset++, len--;
+ if(!ndpi_struct->disable_metadata_export) {
+ int max_len = sizeof(flow->host_server_name)-1, j = 0;
+
+ if(len > max_len) len = max_len;
+
+ while((len > 0) && (sni_offset < udp_len)) {
+ flow->host_server_name[j++] = packet->payload[sni_offset];
+ sni_offset++, len--;
+ }
+
+ ndpi_match_host_subprotocol(ndpi_struct, flow,
+ (char *)flow->host_server_name,
+ strlen((const char*)flow->host_server_name),
+ NDPI_PROTOCOL_QUIC);
}
-
- ndpi_match_host_subprotocol(ndpi_struct, flow,
- (char *)flow->host_server_name,
- strlen((const char*)flow->host_server_name),
- NDPI_PROTOCOL_QUIC);
-
}
break;
diff --git a/src/lib/protocols/ssh.c b/src/lib/protocols/ssh.c
index 0045fe69e..89b359040 100644
--- a/src/lib/protocols/ssh.c
+++ b/src/lib/protocols/ssh.c
@@ -54,10 +54,13 @@ void ndpi_search_ssh_tcp(struct ndpi_detection_module_struct *ndpi_struct, struc
if (flow->l4.tcp.ssh_stage == 0) {
if (packet->payload_packet_len > 7 && packet->payload_packet_len < 100
&& memcmp(packet->payload, "SSH-", 4) == 0) {
- int len = ndpi_min(sizeof(flow->protos.ssh.client_signature)-1, packet->payload_packet_len);
- strncpy(flow->protos.ssh.client_signature, (const char *)packet->payload, len);
- flow->protos.ssh.client_signature[len] = '\0';
- ndpi_ssh_zap_cr(flow->protos.ssh.client_signature, len);
+ if(!ndpi_struct->disable_metadata_export) {
+ int len = ndpi_min(sizeof(flow->protos.ssh.client_signature)-1, packet->payload_packet_len);
+ strncpy(flow->protos.ssh.client_signature, (const char *)packet->payload, len);
+ flow->protos.ssh.client_signature[len] = '\0';
+ ndpi_ssh_zap_cr(flow->protos.ssh.client_signature, len);
+ }
+
NDPI_LOG_DBG2(ndpi_struct, "ssh stage 0 passed\n");
flow->l4.tcp.ssh_stage = 1 + packet->packet_direction;
return;
@@ -65,10 +68,13 @@ void ndpi_search_ssh_tcp(struct ndpi_detection_module_struct *ndpi_struct, struc
} else if (flow->l4.tcp.ssh_stage == (2 - packet->packet_direction)) {
if (packet->payload_packet_len > 7 && packet->payload_packet_len < 500
&& memcmp(packet->payload, "SSH-", 4) == 0) {
- int len = ndpi_min(sizeof(flow->protos.ssh.server_signature)-1, packet->payload_packet_len);
- strncpy(flow->protos.ssh.server_signature, (const char *)packet->payload, len);
- flow->protos.ssh.server_signature[len] = '\0';
- ndpi_ssh_zap_cr(flow->protos.ssh.server_signature, len);
+ if(!ndpi_struct->disable_metadata_export) {
+ int len = ndpi_min(sizeof(flow->protos.ssh.server_signature)-1, packet->payload_packet_len);
+ strncpy(flow->protos.ssh.server_signature, (const char *)packet->payload, len);
+ flow->protos.ssh.server_signature[len] = '\0';
+ ndpi_ssh_zap_cr(flow->protos.ssh.server_signature, len);
+ }
+
NDPI_LOG_INFO(ndpi_struct, "found ssh\n");
ndpi_int_ssh_add_connection(ndpi_struct, flow);
diff --git a/src/lib/protocols/ssl.c b/src/lib/protocols/ssl.c
index adb0e9cf4..aa649f579 100644
--- a/src/lib/protocols/ssl.c
+++ b/src/lib/protocols/ssl.c
@@ -225,9 +225,11 @@ int getSSLcertificate(struct ndpi_detection_module_struct *ndpi_struct,
}
if(num_dots >= 2) {
- stripCertificateTrailer(buffer, buffer_len);
- snprintf(flow->protos.ssl.server_certificate,
- sizeof(flow->protos.ssl.server_certificate), "%s", buffer);
+ if(!ndpi_struct->disable_metadata_export) {
+ stripCertificateTrailer(buffer, buffer_len);
+ snprintf(flow->protos.ssl.server_certificate,
+ sizeof(flow->protos.ssl.server_certificate), "%s", buffer);
+ }
return(1 /* Server Certificate */);
}
}
@@ -289,9 +291,11 @@ int getSSLcertificate(struct ndpi_detection_module_struct *ndpi_struct,
buffer[len] = '\0';
stripCertificateTrailer(buffer, buffer_len);
- snprintf(flow->protos.ssl.client_certificate,
- sizeof(flow->protos.ssl.client_certificate), "%s", buffer);
-
+ if(!ndpi_struct->disable_metadata_export) {
+ snprintf(flow->protos.ssl.client_certificate,
+ sizeof(flow->protos.ssl.client_certificate), "%s", buffer);
+ }
+
/* We're happy now */
return(2 /* Client Certificate */);
}
diff --git a/src/lib/protocols/ubntac2.c b/src/lib/protocols/ubntac2.c
index 012c8712e..d8392fda7 100644
--- a/src/lib/protocols/ubntac2.c
+++ b/src/lib/protocols/ubntac2.c
@@ -64,10 +64,12 @@ void ndpi_search_ubntac2(struct ndpi_detection_module_struct *ndpi_struct, struc
version[j++] = packet->payload[i];
version[j] = '\0';
-
- len = ndpi_min(sizeof(flow->protos.ubntac2.version)-1, j);
- strncpy(flow->protos.ubntac2.version, (const char *)version, len);
- flow->protos.ubntac2.version[len] = '\0';
+
+ if(!ndpi_struct->disable_metadata_export) {
+ len = ndpi_min(sizeof(flow->protos.ubntac2.version)-1, j);
+ strncpy(flow->protos.ubntac2.version, (const char *)version, len);
+ flow->protos.ubntac2.version[len] = '\0';
+ }
}
NDPI_LOG_INFO(ndpi_struct, "UBNT AirControl 2 request\n");
diff --git a/src/lib/protocols/whoisdas.c b/src/lib/protocols/whoisdas.c
index 32a9d186f..291ae15ca 100644
--- a/src/lib/protocols/whoisdas.c
+++ b/src/lib/protocols/whoisdas.c
@@ -41,15 +41,16 @@ void ndpi_search_whois_das(struct ndpi_detection_module_struct *ndpi_struct, str
u_int max_len = sizeof(flow->host_server_name) - 1;
u_int i, j;
-
- for(i=strlen((const char *)flow->host_server_name), j=0; (i<max_len) && (j<packet->payload_packet_len); i++, j++) {
- if((packet->payload[j] == '\n') || (packet->payload[j] == '\r')) break;
+ if(!ndpi_struct->disable_metadata_export) {
+ for(i=strlen((const char *)flow->host_server_name), j=0; (i<max_len) && (j<packet->payload_packet_len); i++, j++) {
+ if((packet->payload[j] == '\n') || (packet->payload[j] == '\r')) break;
+ flow->host_server_name[i] = packet->payload[j];
+ }
- flow->host_server_name[i] = packet->payload[j];
+ flow->host_server_name[i] = '\0';
}
- flow->host_server_name[i] = '\0';
flow->server_id = ((sport == 43) || (sport == 4343)) ? flow->src : flow->dst;
NDPI_LOG_INFO(ndpi_struct, "[WHOIS/DAS] %s\n", flow->host_server_name);
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