- Adapted indenation to new agreed upon system
- Added support for second generation scriptcontext based counter
This commit is contained in:
koennecke
765
telnet.c
765
telnet.c
@ -14,419 +14,378 @@
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#include "telnet.h"
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#include "commandlog.h"
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#include "fortify.h"
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#define LOGINWAIT 300
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#define LOGINWAIT 300
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/* 300 == 5 minutes to wait for valid username password */
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/*-------------------------------------------------------------------------*/
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typedef struct __TelTask {
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SConnection *pCon;
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int iLogin;
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char pLoginWord[132];
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time_t tStart;
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} TelTask;
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typedef struct __TelTask {
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SConnection *pCon;
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int iLogin;
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char pLoginWord[132];
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time_t tStart;
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} TelTask;
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/*--------------------------------------------------------------------------*/
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pTelTask CreateTelnet(SConnection *pCon)
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{
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pTelTask pRes = NULL;
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char *pPtr = NULL;
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time_t shit;
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assert(pCon);
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/* check for the login word */
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pPtr = IFindOption(pSICSOptions,"TelWord");
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if(!pPtr)
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{
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return NULL;
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}
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pRes = (pTelTask)malloc(sizeof(TelTask));
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if(!pRes)
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{
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return NULL;
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}
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/* initialise */
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memset(pRes,0,sizeof(TelTask));
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pRes->pCon = pCon;
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pRes->iLogin = 0;
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pRes->tStart = time(&shit);
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strcpy(pRes->pLoginWord,pPtr);
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return pRes;
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}
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/*--------------------------------------------------------------------------*/
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void DeleteTelnet(void *pData)
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{
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pTelTask pKill = NULL;
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assert(pData);
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pKill = (pTelTask)pData;
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if(pKill->pCon)
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{
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SCDeleteConnection(pKill->pCon);
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}
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free(pKill);
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}
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/*-------------------------------------------------------------------------*/
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static void SendWelcome(SConnection *pCon)
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{
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SCWrite(pCon,"--------- Welcome to SICS ------------",eError);
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SCWrite(pCon,"You are now connected to a SICS Instrument Control Server",eError);
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SCWrite(pCon,"\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!",eError);
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SCWrite(pCon,"WARNING: Proceed with utmost care!",eError);
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SCWrite(pCon,"YOU MAY BE MOVING HARDWARE IN THE EXPERIMENT HALL",eError);
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SCWrite(pCon,"YOU MAY CAUSE GRIEVIOUS BODILY HARM TO SOMEBODY",eError);
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SCWrite(pCon,"YOU MAY DAMAGE VALUABLE AND SOMETIMES IRREPLACABLE HARDWARE",
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eError);
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SCWrite(pCon,"Continuing here seriously compromises hacker's ethics",eError);
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SCWrite(pCon,"You will NOT find valuable data here!",eError);
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SCWrite(pCon,"The SICS server does NOT allow you to spawn to the system",eError);
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SCWrite(pCon,"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!",eError);
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}
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/*-------------------------------------------------------------------------*/
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static void SendGA(SConnection *pCon)
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{
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char pReply[2];
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pReply[0] = (char)255;
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pReply[1] = (char)249;
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NETWrite(pCon->pSock,pReply,2);
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}
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/*--------------------------------------------------------------------------*/
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int TelnetTaskOld(void *pData)
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{
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pTelTask self = NULL;
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char *pPtr = NULL;
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char *pLogin = NULL;
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char *pUser = NULL, *pPasswd = NULL;
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char pBuffer[512], pHost[131];
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int iRet;
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time_t shit;
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self = (pTelTask)pData;
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assert(self);
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if(self->pCon->iEnd)
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{
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if(SCActive(self->pCon))
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{
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return 1;
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}
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else
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{
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return 0;
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}
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}
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/* pop and execute */
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iRet = CostaPop(self->pCon->pStack,&pPtr);
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if(iRet)
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{
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if(pPtr)
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{
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if(self->iLogin) /* handle normal command */
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{
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/* check for logoff */
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if(strstr(pPtr,"logoff") != NULL)
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{
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NetReadRemove(pServ->pReader,self->pCon->pSock);
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free(pPtr);
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self->pCon->iEnd = 1;
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return 0;
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}
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/* invoke command */
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CostaLock(self->pCon->pStack);
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SCInvoke(self->pCon,pServ->pSics,pPtr);
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CostaUnlock(self->pCon->pStack);
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SendGA(self->pCon);
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free(pPtr);
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}
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else /* handle login messages */
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{
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pLogin = strstr(pPtr,self->pLoginWord);
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if(!pLogin)
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{
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SCWrite(self->pCon,
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"------------------- Get Lost -------------------",
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eError);
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if(time(&shit) > self->tStart + LOGINWAIT)
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{
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SCWrite(self->pCon,
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"I cannot stand your login attempts anymore!",
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eError);
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NetReadRemove(pServ->pReader,self->pCon->pSock);
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self->pCon->iEnd = 1;
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free(pPtr);
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return 0;
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}
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free(pPtr);
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return 1;
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}
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else /* check username / password */
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{
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pLogin += strlen(self->pLoginWord);
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pUser = strtok(pLogin," \t");
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pPasswd = strtok(NULL," \t\r\n");
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iRet = IsValidUser(pUser,pPasswd);
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if(iRet < 0)
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{
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sprintf(pBuffer,"SYSTEM ATTACK by %s / %s",pUser,
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pPasswd);
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SICSLogWrite(pBuffer,eInternal);
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SCWrite(self->pCon,
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"I do not know you, I do not let you in",eError);
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SendGA(self->pCon);
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free(pPtr);
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return 1;
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}
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else
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{
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NETInfo(self->pCon->pSock,pHost,131);
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sprintf(pBuffer,"Accepted connection on socket %d from %s",
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self->pCon->pSock->sockid, pHost);
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SICSLogWrite(pBuffer,eInternal);
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WriteToCommandLog("SYS >", pBuffer);
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SendWelcome(self->pCon);
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SCSetRights(self->pCon,iRet);
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self->iLogin = 1;
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SendGA(self->pCon);
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free(pPtr);
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return 1;
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}
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}
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}
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}
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}
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/* check for no commands but timeout on telnet */
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if( !self->iLogin && (time(&shit) > self->tStart + LOGINWAIT) )
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{
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self->pCon->iEnd = 1;
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NetReadRemove(pServ->pReader,self->pCon->pSock);
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return 0;
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}
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/* check for end */
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if(self->pCon->iEnd)
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{
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if(SCActive(self->pCon))
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{
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return 1;
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}
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else
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{
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return 0;
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}
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}
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return 1;
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}
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/*--------------------------------------------------------------------------*/
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int TelnetTask(void *pData)
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{
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pTelTask self = NULL;
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char *pPtr = NULL;
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char *pLogin = NULL;
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char *pUser = NULL, *pPasswd = NULL;
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char pBuffer[512], pHost[131];
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int iRet;
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time_t shit;
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self = (pTelTask)pData;
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assert(self);
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if(self->pCon->iEnd)
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{
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if(SCActive(self->pCon))
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{
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return 1;
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}
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else
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{
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return 0;
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}
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}
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/* pop and execute */
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iRet = CostaPop(self->pCon->pStack,&pPtr);
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if(iRet)
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{
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if(pPtr)
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{
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if(self->iLogin) /* handle normal command */
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{
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/* check for logoff */
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if(strstr(pPtr,"logoff") != NULL)
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{
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ANETclose(self->pCon->sockHandle);
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free(pPtr);
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self->pCon->iEnd = 1;
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return 0;
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}
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/* invoke command */
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CostaLock(self->pCon->pStack);
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SCInvoke(self->pCon,pServ->pSics,pPtr);
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CostaUnlock(self->pCon->pStack);
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SendGA(self->pCon);
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free(pPtr);
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}
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else /* handle login messages */
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{
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pLogin = strstr(pPtr,self->pLoginWord);
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if(!pLogin)
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{
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SCWrite(self->pCon,
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"------------------- Get Lost -------------------",
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eError);
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if(time(&shit) > self->tStart + LOGINWAIT)
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{
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SCWrite(self->pCon,
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"I cannot stand your login attempts anymore!",
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eError);
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ANETclose(self->pCon->sockHandle);
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self->pCon->iEnd = 1;
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free(pPtr);
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return 0;
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}
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free(pPtr);
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return 1;
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}
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else /* check username / password */
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{
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pLogin += strlen(self->pLoginWord);
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pUser = strtok(pLogin," \t");
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pPasswd = strtok(NULL," \t\r\n");
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iRet = IsValidUser(pUser,pPasswd);
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if(iRet < 0)
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{
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sprintf(pBuffer,"SYSTEM ATTACK by %s / %s",pUser,
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pPasswd);
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SICSLogWrite(pBuffer,eInternal);
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SCWrite(self->pCon,
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"I do not know you, I do not let you in",eError);
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SendGA(self->pCon);
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free(pPtr);
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return 1;
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}
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else
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{
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sprintf(pBuffer,"Accepted telnet connection on handle %d",
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self->pCon->sockHandle);
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SICSLogWrite(pBuffer,eInternal);
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WriteToCommandLog("SYS >", pBuffer);
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SendWelcome(self->pCon);
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SCSetRights(self->pCon,iRet);
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self->iLogin = 1;
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SendGA(self->pCon);
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free(pPtr);
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return 1;
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}
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}
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}
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}
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}
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/* check for no commands but timeout on telnet */
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if( !self->iLogin && (time(&shit) > self->tStart + LOGINWAIT) )
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{
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self->pCon->iEnd = 1;
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ANETclose(self->pCon->sockHandle);
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return 0;
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}
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/* check for end */
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if(self->pCon->iEnd)
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{
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if(SCActive(self->pCon))
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{
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return 1;
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}
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else
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{
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return 0;
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}
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}
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return 1;
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}
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/*---------------------------------------------------------------------------*/
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void TelnetSignal(void *pData, int iSignal, void *pSigData)
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{
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pTelTask self = NULL;
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int *iInt;
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char *pPtr;
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self = (pTelTask)pData;
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assert(self);
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if(iSignal == SICSINT)
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{
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iInt = (int *)pSigData;
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SCSetInterrupt(self->pCon,*iInt);
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if(*iInt == eEndServer)
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{
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self->pCon->iEnd = 1;
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}
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}
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else if(iSignal == SICSBROADCAST)
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{
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pPtr = (char *)pSigData;
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if(pPtr)
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{
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SCWrite(self->pCon,pPtr,eWarning);
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}
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}
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else if(iSignal == TOKENRELEASE)
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{
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self->pCon->iGrab = 0;
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}
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else if(iSignal == TOKENGRAB)
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{
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self->pCon->iGrab = 1;
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}
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}
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/*-------------------------------------------------------------------------*/
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static mkChannel *pTelnet = NULL;
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void InstallTelnet(void)
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{
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char *pPtr = NULL;
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int i, iPort;
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pTelTask CreateTelnet(SConnection * pCon)
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{
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pTelTask pRes = NULL;
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char *pPtr = NULL;
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time_t shit;
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assert(pCon);
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/* No double telnet ports ! */
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assert(!pTelnet);
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/* if the option is not there or invalid, telnet is disabled */
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pPtr = IFindOption(pSICSOptions,"TelnetPort");
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if(!pPtr)
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{
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return;
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}
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i = sscanf(pPtr,"%d",&iPort);
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/*
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/* check for the login word */
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pPtr = IFindOption(pSICSOptions, "TelWord");
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if (!pPtr) {
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return NULL;
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}
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pRes = (pTelTask) malloc(sizeof(TelTask));
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if (!pRes) {
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return NULL;
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}
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/* initialise */
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memset(pRes, 0, sizeof(TelTask));
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pRes->pCon = pCon;
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pRes->iLogin = 0;
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pRes->tStart = time(&shit);
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strcpy(pRes->pLoginWord, pPtr);
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return pRes;
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}
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/*--------------------------------------------------------------------------*/
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void DeleteTelnet(void *pData)
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{
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pTelTask pKill = NULL;
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assert(pData);
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pKill = (pTelTask) pData;
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if (pKill->pCon) {
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SCDeleteConnection(pKill->pCon);
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}
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free(pKill);
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}
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/*-------------------------------------------------------------------------*/
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static void SendWelcome(SConnection * pCon)
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{
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SCWrite(pCon, "--------- Welcome to SICS ------------", eError);
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SCWrite(pCon,
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"You are now connected to a SICS Instrument Control Server",
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eError);
|
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SCWrite(pCon, "\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!",
|
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eError);
|
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SCWrite(pCon, "WARNING: Proceed with utmost care!", eError);
|
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SCWrite(pCon, "YOU MAY BE MOVING HARDWARE IN THE EXPERIMENT HALL",
|
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eError);
|
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SCWrite(pCon, "YOU MAY CAUSE GRIEVIOUS BODILY HARM TO SOMEBODY", eError);
|
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SCWrite(pCon,
|
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"YOU MAY DAMAGE VALUABLE AND SOMETIMES IRREPLACABLE HARDWARE",
|
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eError);
|
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SCWrite(pCon, "Continuing here seriously compromises hacker's ethics",
|
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eError);
|
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SCWrite(pCon, "You will NOT find valuable data here!", eError);
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SCWrite(pCon,
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"The SICS server does NOT allow you to spawn to the system",
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eError);
|
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SCWrite(pCon, "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!",
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eError);
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}
|
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|
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/*-------------------------------------------------------------------------*/
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static void SendGA(SConnection * pCon)
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{
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char pReply[2];
|
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pReply[0] = (char) 255;
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pReply[1] = (char) 249;
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NETWrite(pCon->pSock, pReply, 2);
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}
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/*--------------------------------------------------------------------------*/
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int TelnetTaskOld(void *pData)
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{
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pTelTask self = NULL;
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char *pPtr = NULL;
|
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char *pLogin = NULL;
|
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char *pUser = NULL, *pPasswd = NULL;
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char pBuffer[512], pHost[131];
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int iRet;
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time_t shit;
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self = (pTelTask) pData;
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assert(self);
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if (self->pCon->iEnd) {
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if (SCActive(self->pCon)) {
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return 1;
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} else {
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return 0;
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}
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}
|
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|
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/* pop and execute */
|
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iRet = CostaPop(self->pCon->pStack, &pPtr);
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if (iRet) {
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if (pPtr) {
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if (self->iLogin) { /* handle normal command */
|
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/* check for logoff */
|
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if (strstr(pPtr, "logoff") != NULL) {
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NetReadRemove(pServ->pReader, self->pCon->pSock);
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free(pPtr);
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self->pCon->iEnd = 1;
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return 0;
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}
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/* invoke command */
|
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CostaLock(self->pCon->pStack);
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SCInvoke(self->pCon, pServ->pSics, pPtr);
|
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CostaUnlock(self->pCon->pStack);
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SendGA(self->pCon);
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free(pPtr);
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} else { /* handle login messages */
|
||||
|
||||
pLogin = strstr(pPtr, self->pLoginWord);
|
||||
if (!pLogin) {
|
||||
SCWrite(self->pCon,
|
||||
"------------------- Get Lost -------------------",
|
||||
eError);
|
||||
if (time(&shit) > self->tStart + LOGINWAIT) {
|
||||
SCWrite(self->pCon,
|
||||
"I cannot stand your login attempts anymore!", eError);
|
||||
NetReadRemove(pServ->pReader, self->pCon->pSock);
|
||||
self->pCon->iEnd = 1;
|
||||
free(pPtr);
|
||||
return 0;
|
||||
}
|
||||
free(pPtr);
|
||||
return 1;
|
||||
} else { /* check username / password */
|
||||
|
||||
pLogin += strlen(self->pLoginWord);
|
||||
pUser = strtok(pLogin, " \t");
|
||||
pPasswd = strtok(NULL, " \t\r\n");
|
||||
iRet = IsValidUser(pUser, pPasswd);
|
||||
if (iRet < 0) {
|
||||
sprintf(pBuffer, "SYSTEM ATTACK by %s / %s", pUser, pPasswd);
|
||||
SICSLogWrite(pBuffer, eInternal);
|
||||
SCWrite(self->pCon,
|
||||
"I do not know you, I do not let you in", eError);
|
||||
SendGA(self->pCon);
|
||||
free(pPtr);
|
||||
return 1;
|
||||
} else {
|
||||
NETInfo(self->pCon->pSock, pHost, 131);
|
||||
sprintf(pBuffer, "Accepted connection on socket %d from %s",
|
||||
self->pCon->pSock->sockid, pHost);
|
||||
SICSLogWrite(pBuffer, eInternal);
|
||||
WriteToCommandLog("SYS >", pBuffer);
|
||||
SendWelcome(self->pCon);
|
||||
SCSetRights(self->pCon, iRet);
|
||||
self->iLogin = 1;
|
||||
SendGA(self->pCon);
|
||||
free(pPtr);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/* check for no commands but timeout on telnet */
|
||||
if (!self->iLogin && (time(&shit) > self->tStart + LOGINWAIT)) {
|
||||
self->pCon->iEnd = 1;
|
||||
NetReadRemove(pServ->pReader, self->pCon->pSock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* check for end */
|
||||
if (self->pCon->iEnd) {
|
||||
if (SCActive(self->pCon)) {
|
||||
return 1;
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/*--------------------------------------------------------------------------*/
|
||||
int TelnetTask(void *pData)
|
||||
{
|
||||
pTelTask self = NULL;
|
||||
char *pPtr = NULL;
|
||||
char *pLogin = NULL;
|
||||
char *pUser = NULL, *pPasswd = NULL;
|
||||
char pBuffer[512], pHost[131];
|
||||
int iRet;
|
||||
time_t shit;
|
||||
|
||||
self = (pTelTask) pData;
|
||||
assert(self);
|
||||
|
||||
if (self->pCon->iEnd) {
|
||||
if (SCActive(self->pCon)) {
|
||||
return 1;
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* pop and execute */
|
||||
iRet = CostaPop(self->pCon->pStack, &pPtr);
|
||||
if (iRet) {
|
||||
if (pPtr) {
|
||||
if (self->iLogin) { /* handle normal command */
|
||||
/* check for logoff */
|
||||
if (strstr(pPtr, "logoff") != NULL) {
|
||||
ANETclose(self->pCon->sockHandle);
|
||||
free(pPtr);
|
||||
self->pCon->iEnd = 1;
|
||||
return 0;
|
||||
}
|
||||
/* invoke command */
|
||||
CostaLock(self->pCon->pStack);
|
||||
SCInvoke(self->pCon, pServ->pSics, pPtr);
|
||||
CostaUnlock(self->pCon->pStack);
|
||||
SendGA(self->pCon);
|
||||
free(pPtr);
|
||||
} else { /* handle login messages */
|
||||
|
||||
pLogin = strstr(pPtr, self->pLoginWord);
|
||||
if (!pLogin) {
|
||||
SCWrite(self->pCon,
|
||||
"------------------- Get Lost -------------------",
|
||||
eError);
|
||||
if (time(&shit) > self->tStart + LOGINWAIT) {
|
||||
SCWrite(self->pCon,
|
||||
"I cannot stand your login attempts anymore!", eError);
|
||||
ANETclose(self->pCon->sockHandle);
|
||||
self->pCon->iEnd = 1;
|
||||
free(pPtr);
|
||||
return 0;
|
||||
}
|
||||
free(pPtr);
|
||||
return 1;
|
||||
} else { /* check username / password */
|
||||
|
||||
pLogin += strlen(self->pLoginWord);
|
||||
pUser = strtok(pLogin, " \t");
|
||||
pPasswd = strtok(NULL, " \t\r\n");
|
||||
iRet = IsValidUser(pUser, pPasswd);
|
||||
if (iRet < 0) {
|
||||
sprintf(pBuffer, "SYSTEM ATTACK by %s / %s", pUser, pPasswd);
|
||||
SICSLogWrite(pBuffer, eInternal);
|
||||
SCWrite(self->pCon,
|
||||
"I do not know you, I do not let you in", eError);
|
||||
SendGA(self->pCon);
|
||||
free(pPtr);
|
||||
return 1;
|
||||
} else {
|
||||
sprintf(pBuffer, "Accepted telnet connection on handle %d",
|
||||
self->pCon->sockHandle);
|
||||
SICSLogWrite(pBuffer, eInternal);
|
||||
WriteToCommandLog("SYS >", pBuffer);
|
||||
SendWelcome(self->pCon);
|
||||
SCSetRights(self->pCon, iRet);
|
||||
self->iLogin = 1;
|
||||
SendGA(self->pCon);
|
||||
free(pPtr);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/* check for no commands but timeout on telnet */
|
||||
if (!self->iLogin && (time(&shit) > self->tStart + LOGINWAIT)) {
|
||||
self->pCon->iEnd = 1;
|
||||
ANETclose(self->pCon->sockHandle);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* check for end */
|
||||
if (self->pCon->iEnd) {
|
||||
if (SCActive(self->pCon)) {
|
||||
return 1;
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void TelnetSignal(void *pData, int iSignal, void *pSigData)
|
||||
{
|
||||
pTelTask self = NULL;
|
||||
int *iInt;
|
||||
char *pPtr;
|
||||
|
||||
self = (pTelTask) pData;
|
||||
assert(self);
|
||||
|
||||
if (iSignal == SICSINT) {
|
||||
iInt = (int *) pSigData;
|
||||
SCSetInterrupt(self->pCon, *iInt);
|
||||
if (*iInt == eEndServer) {
|
||||
self->pCon->iEnd = 1;
|
||||
}
|
||||
} else if (iSignal == SICSBROADCAST) {
|
||||
pPtr = (char *) pSigData;
|
||||
if (pPtr) {
|
||||
SCWrite(self->pCon, pPtr, eWarning);
|
||||
}
|
||||
} else if (iSignal == TOKENRELEASE) {
|
||||
self->pCon->iGrab = 0;
|
||||
} else if (iSignal == TOKENGRAB) {
|
||||
self->pCon->iGrab = 1;
|
||||
}
|
||||
}
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
static mkChannel *pTelnet = NULL;
|
||||
|
||||
void InstallTelnet(void)
|
||||
{
|
||||
char *pPtr = NULL;
|
||||
int i, iPort;
|
||||
|
||||
/* No double telnet ports ! */
|
||||
assert(!pTelnet);
|
||||
|
||||
/* if the option is not there or invalid, telnet is disabled */
|
||||
pPtr = IFindOption(pSICSOptions, "TelnetPort");
|
||||
if (!pPtr) {
|
||||
return;
|
||||
}
|
||||
i = sscanf(pPtr, "%d", &iPort);
|
||||
/*
|
||||
if(i > 0)
|
||||
{
|
||||
pTelnet = NETOpenPort(iPort);
|
||||
pTelnet = NETOpenPort(iPort);
|
||||
}
|
||||
|
||||
if(pTelnet)
|
||||
{
|
||||
NetReadRegister(pServ->pReader,pTelnet, taccept, NULL);
|
||||
}
|
||||
*/
|
||||
/* when we have a port have the NetReader listen and handle it */
|
||||
NetReadInstallANETPort(pServ->pReader,taccept, iPort);
|
||||
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void KillTelnet(void)
|
||||
{
|
||||
if(pTelnet)
|
||||
{
|
||||
NETClosePort(pTelnet);
|
||||
/* NetReadRemove(pServ->pReader,pTelnet); */
|
||||
free(pTelnet);
|
||||
pTelnet = NULL;
|
||||
NetReadRegister(pServ->pReader,pTelnet, taccept, NULL);
|
||||
}
|
||||
}
|
||||
*/
|
||||
/* when we have a port have the NetReader listen and handle it */
|
||||
NetReadInstallANETPort(pServ->pReader, taccept, iPort);
|
||||
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void KillTelnet(void)
|
||||
{
|
||||
if (pTelnet) {
|
||||
NETClosePort(pTelnet);
|
||||
/* NetReadRemove(pServ->pReader,pTelnet); */
|
||||
free(pTelnet);
|
||||
pTelnet = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/*------------------------------------------------------------------------
|
||||
Telnet is fully described in RFC-854. This implementation is very simple.
|
||||
@ -437,7 +396,7 @@
|
||||
/* Telnet codes */
|
||||
#define SE 240
|
||||
#define NOP 241
|
||||
#define DM 242 /* data mark */
|
||||
#define DM 242 /* data mark */
|
||||
#define BRK 243
|
||||
#define IP 244
|
||||
#define AO 245
|
||||
|
||||
Reference in New Issue
Block a user