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#include "kni_utils.h"
#include "kni_cmsg.h"
const char * tfe_cmsg_tlv_type_to_string[KNI_CMSG_TLV_NR_MAX];
struct kni_cmsg_tlv
{
uint16_t type;
uint16_t length;
unsigned char value_as_string[0];
} __attribute__((packed));
struct kni_cmsg
{
uint16_t nr_tlvs;
struct kni_cmsg_tlv* tlvs[KNI_CMSG_TLV_NR_MAX];
uint16_t size;
} __attribute__((packed));
struct kni_cmsg_serialize_header
{
uint8_t __magic__[2]; /* Must be 0x4d, 0x5a */
uint16_t nr_tlvs;
struct kni_cmsg_tlv tlvs[0];
} __attribute__((packed));
struct kni_cmsg* kni_cmsg_init()
{
struct kni_cmsg *cmsg = ALLOC(struct kni_cmsg, 1);
cmsg->size = sizeof(struct kni_cmsg_serialize_header);
return cmsg;
}
void kni_cmsg_destroy(struct kni_cmsg *cmsg)
{
if(cmsg != NULL)
{
for(int i = 0; i < KNI_CMSG_TLV_NR_MAX; i++)
{
FREE(&(cmsg->tlvs[i]));
}
FREE(&cmsg);
}
}
int kni_cmsg_set(struct kni_cmsg *cmsg, uint16_t type, const unsigned char *value, uint16_t size)
{
if(type >= KNI_CMSG_TLV_NR_MAX)
{
return KNI_CMSG_INVALID_TYPE;
}
struct kni_cmsg_tlv *tlv = cmsg->tlvs[type];
uint16_t length = sizeof(struct kni_cmsg_tlv) + size;
if(tlv == NULL)
{
tlv = (struct kni_cmsg_tlv*)ALLOC(char, length);
cmsg->nr_tlvs++;
cmsg->size += length;
}
tlv->type = type;
tlv->length = length;
memcpy(tlv->value_as_string, value, size);
cmsg->tlvs[type] = tlv;
return 0;
}
int kni_cmsg_get(struct kni_cmsg *cmsg, uint16_t type, uint16_t *size, unsigned char **pvalue)
{
struct kni_cmsg_tlv *tlv = NULL;
if(type >= KNI_CMSG_TLV_NR_MAX)
{
*size = 0;
return KNI_CMSG_INVALID_TYPE;
}
if((tlv = cmsg->tlvs[type]) == NULL){
*size = 0;
return KNI_CMSG_TYPE_UNSET;
}
*size = tlv->length - sizeof(struct kni_cmsg_tlv);
*pvalue = tlv->value_as_string;
return 0;
}
uint16_t kni_cmsg_serialize_size_get(struct kni_cmsg *cmsg)
{
return cmsg->size;
}
int kni_cmsg_serialize(struct kni_cmsg *cmsg, unsigned char *buff, uint16_t bufflen, uint16_t *serialize_len)
{
uint16_t size = cmsg->size;
if(bufflen < size)
{
return KNI_CMSG_BUFF_NOT_ENOUGH;
}
if(size < sizeof(struct kni_cmsg_serialize_header))
{
return KNI_CMSG_INVALID_FORMAT;
}
struct kni_cmsg_serialize_header *header = (struct kni_cmsg_serialize_header*)buff;
header->__magic__[0] = 0x4d;
header->__magic__[1] = 0x5a;
header->nr_tlvs = htons(cmsg->nr_tlvs);
uint16_t offset = sizeof(struct kni_cmsg_serialize_header);
int count = 0;
for(int i = 0; i < KNI_CMSG_TLV_NR_MAX; i++){
if(cmsg->tlvs[i] != NULL)
{
count++;
}
}
if(count != cmsg->nr_tlvs)
{
return KNI_CMSG_INVALID_FORMAT;
}
for(int i = 0; i < KNI_CMSG_TLV_NR_MAX; i++)
{
struct kni_cmsg_tlv *tlv = cmsg->tlvs[i];
if(tlv == NULL)
{
continue;
}
if(i != tlv->type)
{
return KNI_CMSG_INVALID_FORMAT;
}
uint16_t length = tlv->length;
if(length < sizeof(struct kni_cmsg_tlv) || offset + length > size)
{
return KNI_CMSG_INVALID_FORMAT;
}
memcpy((char*)header + offset, (void*)tlv, length);
struct kni_cmsg_tlv *tlv1 = (struct kni_cmsg_tlv*)((char*)header + offset);
tlv1->type = htons(tlv->type);
tlv1->length = htons(tlv->length);
offset += length;
}
if(offset != size)
{
return KNI_CMSG_INVALID_FORMAT;
}
*serialize_len = size;
return 0;
}
int kni_cmsg_deserialize(const unsigned char *data, uint16_t len, struct kni_cmsg** pcmsg)
{
struct kni_cmsg *cmsg = NULL;
struct kni_cmsg_serialize_header *header = (struct kni_cmsg_serialize_header*)data;
int offset = 0, nr_tlvs = -1;
if(len < sizeof(struct kni_cmsg_serialize_header))
{
goto error_out;
}
if(header->__magic__[0] != 0x4d || header->__magic__[1] != 0x5a)
{
goto error_out;
}
cmsg = ALLOC(struct kni_cmsg, 1);
offset = sizeof(struct kni_cmsg_serialize_header);
nr_tlvs = ntohs(header->nr_tlvs);
for(int i = 0; i < nr_tlvs; i++)
{
struct kni_cmsg_tlv *tlv = (struct kni_cmsg_tlv*)(data + offset);
if(offset + sizeof(struct kni_cmsg_tlv) > len)
{
goto error_out;
}
uint16_t type = ntohs(tlv->type);
uint16_t length = ntohs(tlv->length);
if(length < sizeof(struct kni_cmsg_tlv) || offset + length > len)
{
goto error_out;
}
int ret = kni_cmsg_set(cmsg, type, data + offset + sizeof(struct kni_cmsg_tlv), length - sizeof(struct kni_cmsg_tlv));
if(ret < 0)
{
goto error_out;
}
offset += length;
}
cmsg->size = offset;
*pcmsg = cmsg;
return 0;
error_out:
kni_cmsg_destroy(cmsg);
return KNI_CMSG_INVALID_FORMAT;
}
void tfe_cmsg_enum_to_string()
{
memset(tfe_cmsg_tlv_type_to_string, 0 ,sizeof(tfe_cmsg_tlv_type_to_string));
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_SEQ] = "TFE_CMSG_TCP_RESTORE_SEQ";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_ACK] = "TFE_CMSG_TCP_RESTORE_ACK";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_MSS_CLIENT] = "TFE_CMSG_TCP_RESTORE_MSS_CLIENT";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_MSS_SERVER] = "TFE_CMSG_TCP_RESTORE_MSS_SERVER";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_WSACLE_CLIENT] = "TFE_CMSG_TCP_RESTORE_WSACLE_CLIENT";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_WSACLE_SERVER] = "TFE_CMSG_TCP_RESTORE_WSACLE_SERVER";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_SACK_CLIENT] = "TFE_CMSG_TCP_RESTORE_SACK_CLIENT";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_SACK_SERVER] = "TFE_CMSG_TCP_RESTORE_SACK_SERVER";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_TS_CLIENT] = "TFE_CMSG_TCP_RESTORE_TS_CLIENT";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_TS_SERVER] = "TFE_CMSG_TCP_RESTORE_TS_SERVER";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_PROTOCOL] = "TFE_CMSG_TCP_RESTORE_PROTOCOL";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_WINDOW_CLIENT] = "TFE_CMSG_TCP_RESTORE_WINDOW_CLIENT";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_WINDOW_SERVER] = "TFE_CMSG_TCP_RESTORE_WINDOW_SERVER";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_INFO_PACKET_CUR_DIR] = "TFE_CMSG_TCP_RESTORE_INFO_PACKET_CUR_DIR";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_TS_CLIENT_VAL] = "TFE_CMSG_TCP_RESTORE_TS_CLIENT_VAL";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_RESTORE_TS_SERVER_VAL] = "TFE_CMSG_TCP_RESTORE_TS_SERVER_VAL";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_POLICY_ID] = "TFE_CMSG_POLICY_ID";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_STREAM_TRACE_ID] = "TFE_CMSG_STREAM_TRACE_ID";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SSL_INTERCEPT_STATE] = "TFE_CMSG_SSL_INTERCEPT_STATE";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SSL_UPSTREAM_LATENCY] = "TFE_CMSG_SSL_UPSTREAM_LATENCY";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SSL_DOWNSTREAM_LATENCY] = "TFE_CMSG_SSL_DOWNSTREAM_LATENCY";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SSL_UPSTREAM_VERSION] = "TFE_CMSG_SSL_UPSTREAM_VERSION";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SSL_DOWNSTREAM_VERSION] = "TFE_CMSG_SSL_DOWNSTREAM_VERSION";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SSL_PINNING_STATE] = "TFE_CMSG_SSL_PINNING_STATE";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SSL_CERT_VERIFY] = "TFE_CMSG_SSL_CERT_VERIFY";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SSL_ERROR] = "TFE_CMSG_SSL_ERROR";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SRC_MAC] = "TFE_CMSG_SRC_MAC";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DST_MAC] = "TFE_CMSG_DST_MAC";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DOWNSTREAM_TCP_NODELAY] = "TFE_CMSG_DOWNSTREAM_TCP_NODELAY";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DOWNSTREAM_TCP_TTL] = "TFE_CMSG_DOWNSTREAM_TCP_TTL";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DOWNSTREAM_TCP_KEEPALIVE] = "TFE_CMSG_DOWNSTREAM_TCP_KEEPALIVE";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DOWNSTREAM_TCP_KEEPCNT] = "TFE_CMSG_DOWNSTREAM_TCP_KEEPCNT";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DOWNSTREAM_TCP_KEEPIDLE] = "TFE_CMSG_DOWNSTREAM_TCP_KEEPIDLE";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DOWNSTREAM_TCP_KEEPINTVL] = "TFE_CMSG_DOWNSTREAM_TCP_KEEPINTVL";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DOWNSTREAM_TCP_USER_TIMEOUT] = "TFE_CMSG_DOWNSTREAM_TCP_USER_TIMEOUT";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_UPSTREAM_TCP_NODELAY] = "TFE_CMSG_UPSTREAM_TCP_NODELAY";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_UPSTREAM_TCP_TTL] = "TFE_CMSG_UPSTREAM_TCP_TTL";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_UPSTREAM_TCP_KEEPALIVE] = "TFE_CMSG_UPSTREAM_TCP_KEEPALIVE";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_UPSTREAM_TCP_KEEPCNT] = "TFE_CMSG_UPSTREAM_TCP_KEEPCNT";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_UPSTREAM_TCP_KEEPIDLE] = "TFE_CMSG_UPSTREAM_TCP_KEEPIDLE";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_UPSTREAM_TCP_KEEPINTVL] = "TFE_CMSG_UPSTREAM_TCP_KEEPINTVL";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_UPSTREAM_TCP_USER_TIMEOUT] = "TFE_CMSG_UPSTREAM_TCP_USER_TIMEOUT";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_TCP_PASSTHROUGH] = "TFE_CMSG_TCP_PASSTHROUGH";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SRC_SUB_ID] = "TFE_CMSG_SRC_SUB_ID";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DST_SUB_ID] = "TFE_CMSG_DST_SUB_ID";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SRC_ASN] = "TFE_CMSG_SRC_ASN";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DST_ASN] = "TFE_CMSG_DST_ASN";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SRC_ORGANIZATION] = "TFE_CMSG_SRC_ORGANIZATION";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DST_ORGANIZATION] = "TFE_CMSG_DST_ORGANIZATION";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SRC_IP_LOCATION_COUNTRY] = "TFE_CMSG_SRC_IP_LOCATION_COUNTRY";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DST_IP_LOCATION_COUNTRY] = "TFE_CMSG_DST_IP_LOCATION_COUNTRY";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SRC_IP_LOCATION_PROVINE] = "TFE_CMSG_SRC_IP_LOCATION_PROVINE";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DST_IP_LOCATION_PROVINE] = "TFE_CMSG_DST_IP_LOCATION_PROVINE";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SRC_IP_LOCATION_CITY] = "TFE_CMSG_SRC_IP_LOCATION_CITY";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DST_IP_LOCATION_CITY] = "TFE_CMSG_DST_IP_LOCATION_CITY";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SRC_IP_LOCATION_SUBDIVISION] = "TFE_CMSG_SRC_IP_LOCATION_SUBDIVISION";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_DST_IP_LOCATION_SUBDIVISION] = "TFE_CMSG_DST_IP_LOCATION_SUBDIVISION";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SSL_CLIENT_JA3_FINGERPRINT] = "TFE_CMSG_SSL_CLIENT_JA3_FINGERPRINT";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_FQDN_CAT_ID_NUM] = "TFE_CMSG_FQDN_CAT_ID_NUM";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_FQDN_CAT_ID_VAL] = "TFE_CMSG_FQDN_CAT_ID_VAL";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_COMMON_DIRECTION] = "TFE_CMSG_COMMON_DIRECTION";
tfe_cmsg_tlv_type_to_string[TFE_CMSG_SSL_PASSTHROUGH_REASON] = "TFE_CMSG_SSL_PASSTHROUGH_REASON";
}
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