Initial revision

token.c

@@ -0,0 +1,156 @@
+/*---------------------------------------------------------------------------
+                   S I C S   T O K E N
+                   
+   This files implements the SICS token command. Manages the token status
+   and creates the user interface.
+   
+   Mark Koennecke, January 1998
+   
+   copyright: see copyright.h
+   
+-----------------------------------------------------------------------------*/
+#include "sics.h"
+#include "token.h"
+#include "status.h"
+
+/*---------------------- token Management ----------------------------------*/
+ static int iToken = 0;
+ static char pTokenPassword[256];
+/*--------------------------------------------------------------------------*/
+ int TokenGrabActive(void)
+ {
+   return iToken;
+ } 
+/*-------------------------------------------------------------------------*/
+ void TokenRelease(void)
+ {
+   iToken = 0;
+ } 
+/*-------------------------------------------------------------------------*/
+  int TokenInit(SConnection *pCon, SicsInterp *pSics, void *pData,
+                int argc, char *argv[])
+  {
+     int iRet;
+  
+     /* we  need a password for token forcing as a parameter */
+     if(argc < 2)
+     {
+       SCWrite(pCon,"ERROR: I need a password for token forcing!", eError);
+       return 0;
+     }
+     
+     
+     if(strlen(argv[1]) > 255)
+     {
+       SCWrite(pCon, "ERROR: TokenPassword to long!",eError);
+       return 0;
+     }
+     memset(pTokenPassword,0,255);
+     strcpy(pTokenPassword,argv[1]);
+     
+     /* create command */
+     iRet = AddCommand(pSics,
+                       "token",
+                       TokenWrapper,
+                       NULL,
+                       NULL);
+     if(!iRet)
+     {
+        SCWrite(pCon,"ERROR: token command already exixts???!!",eError);
+     }
+     return iRet;                  
+     
+  }              
+/*-------------------------------------------------------------------------*/
+  int TokenWrapper(SConnection *pCon, SicsInterp *pSics, void *pData,
+                int argc, char *argv[])
+  {
+     char pBueffel[256];
+    
+     if(argc < 2)
+     {
+       SCWrite(pCon,"ERROR: expected subcommand to token",eError);
+       return 0;
+     }
+     
+     /* handle grab */
+     if(strcmp(argv[1],"grab") == 0)
+     {
+        /* check user rights */
+        if(usUser < SCGetRights(pCon))
+        {
+          SCWrite(pCon,"ERROR: you are not authorised to grab anything at all!",
+                  eError);
+          return 0;        
+        }
+        /* is there already a grab? */
+        if(iToken)
+        {
+          SCWrite(pCon,"ERROR: Somebody else has already control! You are REJECTED",
+                  eError);
+          return 0;        
+        }
+        /* is somebody doing a scan ? */
+        if(GetStatus() != eEager)
+        {
+          SCWrite(pCon,"ERROR: you cannot grab control while a scan is still running",
+                  eError);
+          return 0;        
+        }
+        /* we can do it */
+        iToken = 1;
+        TaskSignal(pServ->pTasker,TOKENGRAB,NULL);
+        pCon->iGrab = 0; /* to enable us to do commands */
+        SCSendOK(pCon);
+        return 1;
+     }
+     else if(strcmp(argv[1],"release") == 0)
+     {
+       if(pCon->iGrab != 0)
+       {
+         SCWrite(pCon,"ERROR: you cannot release somebody elses control token!",
+                 eError);
+         return 0;        
+       }
+       iToken = 0;
+       TaskSignal(pServ->pTasker,TOKENRELEASE,NULL);
+       SCSendOK(pCon);
+       return 1;
+     }
+     else if(strcmp(argv[1],"force") == 0)
+     {
+        /* check force password */
+        if(argc < 3)
+        {
+           SCWrite(pCon,"ERROR: I need a password for this operation! Request REJECTED",
+                   eError);
+           return 0;        
+        }
+        if(strcmp(argv[2],pTokenPassword) == 0)
+        {
+          if(usMugger < SCGetRights(pCon))
+          {
+            SCWrite(pCon,"ERROR: Manager privilege required to force your way into a SICS server",
+                    eError);
+            SCWrite(pCon,"ERROR: You are REJECTED",eError);
+            return 0;        
+          }
+          iToken = 0;
+          TaskSignal(pServ->pTasker,TOKENRELEASE,0);
+          SCWrite(pCon,"Token forcefully released, no grab active",eWarning);
+          return 1;
+        }
+        else
+        {
+           SCWrite(pCon,"ERROR: The specified password is WRONG!",eError);
+           SCWrite(pCon,"ERROR: Your request has been REJECTED",eError);
+           return 0;
+        }
+     }
+     /* default */
+     sprintf(pBueffel,"ERROR: subcommand %s to token NOT understood",
+                   argv[1]);
+     SCWrite(pCon,pBueffel,eError);              
+     return 0;        
+
+  }