/* $XConsortium: iceauth.c,v 1.21 94/12/20 16:49:58 mor Exp $ */ /* $XFree86: xc/lib/ICE/iceauth.c,v 3.1 1995/01/27 04:44:52 dawes Exp $ */ /****************************************************************************** Copyright (c) 1993 X Consortium Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of the X Consortium shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from the X Consortium. Author: Ralph Mor, X Consortium ******************************************************************************/ #include "KDE-ICE/ICElib.h" #include "KDE-ICE/ICElibint.h" #include "KDE-ICE/ICEutil.h" #include "KDE-ICE/globals.h" #include #include #if defined(X_NOT_STDC_ENV) && !defined(__EMX__) #define Time_t long extern Time_t time (); #else #include #define Time_t time_t #endif static int binaryEqual (register const char *a, register const char *b, register unsigned len); static int was_called_state; /* * MIT-MAGIC-COOKIE-1 is a sample authentication method implemented by * the SI. It is not part of standard ICElib. */ char * IceGenerateMagicCookie (len) int len; { char *auth; long ldata[2]; int seed; int value; int i; if ((auth = (char *) malloc (len + 1)) == NULL) return (NULL); { struct timeval now; gettimeofday(&now, 0); ldata[0] = now.tv_sec; ldata[1] = now.tv_usec; } seed = (ldata[0]) + (ldata[1] << 16); srand (seed); for (i = 0; i < len; i++) { value = rand (); auth[i] = value & 0xff; } auth[len] = '\0'; return (auth); } IcePoAuthStatus _IcePoMagicCookie1Proc (iceConn, authStatePtr, cleanUp, swap, authDataLen, authData, replyDataLenRet, replyDataRet, errorStringRet) IceConn iceConn; IcePointer *authStatePtr; Bool cleanUp; Bool swap; int authDataLen; IcePointer authData; int *replyDataLenRet; IcePointer *replyDataRet; char **errorStringRet; { (void)swap;/*unused*/ (void)authDataLen;/*unused*/ (void)authData;/*unused*/ if (cleanUp) { /* * We didn't allocate any state. We're done. */ return (IcePoAuthDoneCleanup); } *errorStringRet = NULL; if (*authStatePtr == NULL) { /* * This is the first time we're being called. Search the * authentication data for the first occurrence of * MIT-MAGIC-COOKIE-1 that matches iceConn->connection_string. */ unsigned short length; char *data; _IceGetPoAuthData ("ICE", iceConn->connection_string, "MIT-MAGIC-COOKIE-1", &length, &data); if (!data) { const char *tempstr = "Could not tqfind correct MIT-MAGIC-COOKIE-1 authentication"; *errorStringRet = (char *) malloc (strlen (tempstr) + 1); if (*errorStringRet) strcpy (*errorStringRet, tempstr); return (IcePoAuthFailed); } else { *authStatePtr = (IcePointer) &was_called_state; *replyDataLenRet = length; *replyDataRet = data; return (IcePoAuthHaveReply); } } else { /* * We should never get here for MIT-MAGIC-COOKIE-1 since it is * a single pass authentication method. */ const char *tempstr = "MIT-MAGIC-COOKIE-1 authentication internal error"; *errorStringRet = (char *) malloc (strlen (tempstr) + 1); if (*errorStringRet) strcpy (*errorStringRet, tempstr); return (IcePoAuthFailed); } } IcePaAuthStatus _IcePaMagicCookie1Proc (iceConn, authStatePtr, swap, authDataLen, authData, replyDataLenRet, replyDataRet, errorStringRet) IceConn iceConn; IcePointer *authStatePtr; Bool swap; int authDataLen; IcePointer authData; int *replyDataLenRet; IcePointer *replyDataRet; char **errorStringRet; { (void)swap;/*unused*/ *errorStringRet = NULL; *replyDataLenRet = 0; *replyDataRet = NULL; if (*authStatePtr == NULL) { /* * This is the first time we're being called. We don't have * any data to pass to the other client. */ *authStatePtr = (IcePointer) &was_called_state; return (IcePaAuthContinue); } else { /* * Search the authentication data for the first occurrence of * MIT-MAGIC-COOKIE-1 that matches iceConn->connection_string. */ unsigned short length; char *data; _IceGetPaAuthData ("ICE", iceConn->connection_string, "MIT-MAGIC-COOKIE-1", &length, &data); if (data) { IcePaAuthStatus status; if (authDataLen == length && binaryEqual ((char *) authData, data, authDataLen)) { status = IcePaAuthAccepted; } else { const char *tempstr = "MIT-MAGIC-COOKIE-1 authentication rejected"; *errorStringRet = (char *) malloc (strlen (tempstr) + 1); if (*errorStringRet) strcpy (*errorStringRet, tempstr); status = IcePaAuthRejected; } free (data); return (status); } else { /* * We should never get here because in the ConnectionReply * we should have passed all the valid methods. So we should * always tqfind a valid entry. */ const char *tempstr = "MIT-MAGIC-COOKIE-1 authentication internal error"; *errorStringRet = (char *) malloc (strlen (tempstr) + 1); if (*errorStringRet) strcpy (*errorStringRet, tempstr); return (IcePaAuthFailed); } } } /* * local routines */ static int binaryEqual (register const char *a, register const char *b, register unsigned len) { while (len--) if (*a++ != *b++) return 0; return 1; }