163 lines
5.8 KiB
C
163 lines
5.8 KiB
C
/*
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* Copyright (c) 2016 Samsung Electronics Co., Ltd.
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*
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* Network Context Metadata Module[NCM]:Implementation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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// KNOX NPA - START
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#ifndef NCM_COMMON_H__
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#define NCM_COMMON_H__
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#define NCM_VERSION 11
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#define INIT_UID_NAP 0
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#define INIT_PID_NAP 1
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#define DNS_PORT_NAP 53
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#define IPV4_FAMILY_NAP 2
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#define IPV6_FAMILY_NAP 10
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#define INET6_ADDRSTRLEN_NAP 48
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#define NCM_FLOW_TYPE_DEFAULT -1
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#define NCM_FLOW_TYPE_ALL 0
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#define NCM_FLOW_TYPE_OPEN 1
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#define NCM_FLOW_TYPE_CLOSE 2
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#define NCM_FLOW_TYPE_INTERMEDIATE 3
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#include <linux/kernel.h>
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#include <linux/inet.h>
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#include <linux/sched.h>
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#include <linux/string.h>
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#include <net/netfilter/nf_conntrack.h>
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#define isIpv4AddressEqualsNull(srcaddr, dstaddr) ((((strcmp(srcaddr, "0.0.0.0")) || (strcmp(dstaddr, "0.0.0.0"))) == 0) ? 1 : 0)
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#define isIpv6AddressEqualsNull(srcaddr, dstaddr) ((((strcmp(srcaddr, "0000:0000:0000:0000:0000:0000:0000:0000")) || (strcmp(dstaddr, "0000:0000:0000:0000:0000:0000:0000:0000"))) == 0) ? 1 : 0)
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/* Struct Socket definition */
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struct knox_socket_metadata {
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/* The source port of the socket */
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__u16 srcport;
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/* The destination port of the socket */
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__u16 dstport;
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/* The Transport layer protocol of the socket*/
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__u16 trans_proto;
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/* The number of application layer bytes sent by the socket */
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__u64 knox_sent;
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/* The number of application layer bytes recieved by the socket */
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__u64 knox_recv;
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/* The uid which created the socket */
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uid_t knox_uid;
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/* The pid under which the socket was created */
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pid_t knox_pid;
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/* The parent user id under which the socket was created */
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uid_t knox_puid;
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/* The epoch time at which the socket was opened */
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__u64 open_time;
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/* The epoch time at which the socket was closed */
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__u64 close_time;
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/* The source address of the socket */
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char srcaddr[INET6_ADDRSTRLEN_NAP];
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/* The destination address of the socket */
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char dstaddr[INET6_ADDRSTRLEN_NAP];
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/* The name of the process which created the socket */
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char process_name[PROCESS_NAME_LEN_NAP];
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/* The name of the parent process which created the socket */
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char parent_process_name[PROCESS_NAME_LEN_NAP];
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/* The Domain name associated with the ip address of the socket. The size needs to be in sync with the userspace implementation */
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char domain_name[DOMAIN_NAME_LEN_NAP];
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/* The uid which originated the dns request */
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uid_t knox_uid_dns;
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/* The parent process id under which the socket was created */
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pid_t knox_ppid;
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/* The interface used by the flow to transmit packet */
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char interface_name[IFNAMSIZ];
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/* The flow type is used identify the current state of the network flow*/
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int flow_type;
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/* The struct defined is responsible for inserting the socket meta-data into kfifo */
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struct work_struct work_kfifo;
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};
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/* Struct Socket definition */
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struct knox_user_socket_metadata {
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/* The source port of the socket */
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__u16 srcport;
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/* The destination port of the socket */
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__u16 dstport;
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/* The Transport layer protocol of the socket*/
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__u16 trans_proto;
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/* The number of application layer bytes sent by the socket */
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__u64 knox_sent;
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/* The number of application layer bytes recieved by the socket */
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__u64 knox_recv;
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/* The uid which created the socket */
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uid_t knox_uid;
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/* The pid under which the socket was created */
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pid_t knox_pid;
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/* The parent user id under which the socket was created */
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uid_t knox_puid;
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/* The epoch time at which the socket was opened */
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__u64 open_time;
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/* The epoch time at which the socket was closed */
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__u64 close_time;
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/* The source address of the socket */
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char srcaddr[INET6_ADDRSTRLEN_NAP];
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/* The destination address of the socket */
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char dstaddr[INET6_ADDRSTRLEN_NAP];
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/* The name of the process which created the socket */
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char process_name[PROCESS_NAME_LEN_NAP];
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/* The name of the parent process which created the socket */
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char parent_process_name[PROCESS_NAME_LEN_NAP];
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/* The Domain name associated with the ip address of the socket. The size needs to be in sync with the userspace implementation */
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char domain_name[DOMAIN_NAME_LEN_NAP];
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/* The uid which originated the dns request */
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uid_t knox_uid_dns;
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/* The parent process id under which the socket was created */
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pid_t knox_ppid;
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/* The interface used by the flow to transmit packet */
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char interface_name[IFNAMSIZ];
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/* The flow type is used identify the current state of the network flow*/
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int flow_type;
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};
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/* The list of function which is being referenced */
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extern unsigned int check_ncm_flag(void);
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extern void knox_collect_conntrack_data(struct nf_conn *ct, int startStop, int where);
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extern bool kfifo_status(void);
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extern void insert_data_kfifo_kthread(struct knox_socket_metadata* knox_socket_metadata);
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extern unsigned int check_intermediate_flag(void);
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extern unsigned int get_intermediate_timeout(void);
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/* Debug */
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#define NCM_DEBUG 1
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#if NCM_DEBUG
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#define NCM_LOGD(...) printk("ncm: "__VA_ARGS__)
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#else
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#define NCM_LOGD(...)
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#endif /* NCM_DEBUG */
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#define NCM_LOGE(...) printk("ncm: "__VA_ARGS__)
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/* IOCTL definitions*/
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#define __NCMIOC 0x120
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#define NCM_ACTIVATED_OPEN _IO(__NCMIOC, 2)
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#define NCM_DEACTIVATED _IO(__NCMIOC, 4)
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#define NCM_ACTIVATED_CLOSE _IO(__NCMIOC, 8)
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#define NCM_ACTIVATED_ALL _IO(__NCMIOC, 16)
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#define NCM_GETVERSION _IO(__NCMIOC, 32)
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#define NCM_MATCH_VERSION _IO(__NCMIOC, 64)
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#endif
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// KNOX NPA - END
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