/********************************************************************************/
/*										*/
/*			    PolicyNV	 					*/
/*			     Written by Ken Goldman				*/
/*		       IBM Thomas J. Watson Research Center			*/
/*										*/
/* (c) Copyright IBM Corporation 2015 - 2019.					*/
/*										*/
/* All rights reserved.								*/
/* 										*/
/* Redistribution and use in source and binary forms, with or without		*/
/* modification, are permitted provided that the following conditions are	*/
/* met:										*/
/* 										*/
/* Redistributions of source code must retain the above copyright notice,	*/
/* this list of conditions and the following disclaimer.			*/
/* 										*/
/* Redistributions in binary form must reproduce the above copyright		*/
/* notice, this list of conditions and the following disclaimer in the		*/
/* documentation and/or other materials provided with the distribution.		*/
/* 										*/
/* Neither the names of the IBM Corporation nor the names of its		*/
/* contributors may be used to endorse or promote products derived from		*/
/* this software without specific prior written permission.			*/
/* 										*/
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS		*/
/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT		*/
/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR	*/
/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT		*/
/* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,	*/
/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT		*/
/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	*/
/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	*/
/* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT		*/
/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	*/
/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.		*/
/********************************************************************************/

/* 

 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>

#include <ibmtss/tss.h>
#include <ibmtss/tssutils.h>
#include <ibmtss/tssresponsecode.h>

static void printUsage(void);

extern int tssUtilsVerbose;

int main(int argc, char *argv[])
{
    TPM_RC			rc = 0;
    int				i;    /* argc iterator */
    TSS_CONTEXT			*tssContext = NULL;
    PolicyNV_In 		in;
    char 			hierarchyChar = 0;
    const char			*authPassword = NULL; 		/* default no password */
    TPMI_RH_NV_INDEX		nvIndex = 0;
    TPMI_SH_POLICY		policySession = 0;
    const char 			*operandBData = NULL;
    const char 			*operandBFilename = NULL;
    uint16_t 			offset = 0;			/* default 0 */
    TPM_EO			operation = 0;			/* default A = B */
    TPMI_SH_AUTH_SESSION    	sessionHandle0 = TPM_RS_PW;
    unsigned int		sessionAttributes0 = 0;
    TPMI_SH_AUTH_SESSION    	sessionHandle1 = TPM_RH_NULL;
    unsigned int		sessionAttributes1 = 0;
    TPMI_SH_AUTH_SESSION    	sessionHandle2 = TPM_RH_NULL;
    unsigned int		sessionAttributes2 = 0;
   
    setvbuf(stdout, 0, _IONBF, 0);      /* output may be going through pipe to log file */
    TSS_SetProperty(NULL, TPM_TRACE_LEVEL, "1");
    tssUtilsVerbose = FALSE;
    
    /* command line argument defaults */

    for (i=1 ; (i<argc) && (rc == 0) ; i++) {
	if (strcmp(argv[i],"-hi") == 0) {
	    i++;
	    if (i < argc) {
		hierarchyChar = argv[i][0];
	    }
	    else {
		printf("Missing parameter for -hi\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i],"-ha") == 0) {
	    i++;
	    if (i < argc) {
		sscanf(argv[i],"%x", &nvIndex);
	    }
	    else {
		printf("Missing parameter for -ha\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i],"-pwda") == 0) {
	    i++;
	    if (i < argc) {
		authPassword = argv[i];
	    }
	    else {
		printf("-pwda option needs a value\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i],"-hs") == 0) {
	    i++;
	    if (i < argc) {
		sscanf(argv[i],"%x", &policySession);
	    }
	    else {
		printf("Missing parameter for -hs\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i],"-ic") == 0) {
	    i++;
	    if (i < argc) {
		operandBData = argv[i];
	    }
	    else {
		printf("-ic option needs a value\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i], "-if")  == 0) {
	    i++;
	    if (i < argc) {
		operandBFilename = argv[i];
	    } else {
		printf("-if option needs a value\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i],"-off") == 0) {
	    i++;
	    if (i < argc) {
		offset = atoi(argv[i]);
	    }
	    else {
		printf("-off option needs a value\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i],"-op") == 0) {
	    i++;
	    if (i < argc) {
		sscanf(argv[i],"%hx", &operation);
	    }
	    else {
		printf("Missing parameter for -op\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i],"-se0") == 0) {
	    i++;
	    if (i < argc) {
		sscanf(argv[i],"%x", &sessionHandle0);
	    }
	    else {
		printf("Missing parameter for -se0\n");
		printUsage();
	    }
	    i++;
	    if (i < argc) {
		sscanf(argv[i],"%x", &sessionAttributes0);
		if (sessionAttributes0 > 0xff) {
		    printf("Out of range session attributes for -se0\n");
		    printUsage();
		}
	    }
	    else {
		printf("Missing parameter for -se0\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i],"-se1") == 0) {
	    i++;
	    if (i < argc) {
		sscanf(argv[i],"%x", &sessionHandle1);
	    }
	    else {
		printf("Missing parameter for -se1\n");
		printUsage();
	    }
	    i++;
	    if (i < argc) {
		sscanf(argv[i],"%x", &sessionAttributes1);
		if (sessionAttributes1 > 0xff) {
		    printf("Out of range session attributes for -se1\n");
		    printUsage();
		}
	    }
	    else {
		printf("Missing parameter for -se1\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i],"-se2") == 0) {
	    i++;
	    if (i < argc) {
		sscanf(argv[i],"%x", &sessionHandle2);
	    }
	    else {
		printf("Missing parameter for -se2\n");
		printUsage();
	    }
	    i++;
	    if (i < argc) {
		sscanf(argv[i],"%x", &sessionAttributes2);
		if (sessionAttributes2 > 0xff) {
		    printf("Out of range session attributes for -se2\n");
		    printUsage();
		}
	    }
	    else {
		printf("Missing parameter for -se2\n");
		printUsage();
	    }
	}
	else if (strcmp(argv[i],"-h") == 0) {
	    printUsage();
	}
	else if (strcmp(argv[i],"-v") == 0) {
	    tssUtilsVerbose = TRUE;
	    TSS_SetProperty(NULL, TPM_TRACE_LEVEL, "2");
	}
	else {
	    printf("\n%s is not a valid option\n", argv[i]);
	    printUsage();
	}
    }
    if (nvIndex == 0) {
	printf("Missing NV index handle parameter -ha\n");
	printUsage();
    }
    if (policySession == 0) {
	printf("Missing policy session handle parameter -hs\n");
	printUsage();
    }
    if ((operandBData == NULL) && (operandBFilename == NULL)) {
	printf("operandB data string or data file must be specified\n");
	printUsage();
     }
    if ((operandBData != NULL) && (operandBFilename != NULL)) {
	printf("operandB data string and data file cannot both be specified\n");
	printUsage();
    }
    if (rc == 0) {
	if (hierarchyChar == 'o') {
	    in.authHandle = TPM_RH_OWNER;
	}
	else if (hierarchyChar == 'p') {
	    in.authHandle = TPM_RH_PLATFORM;
	}
	else if (hierarchyChar == 0) {
	    in.authHandle = nvIndex;
	}
	else {
	    printf("Missing or illegal -hi\n");
	    printUsage();
	}
    }
    if (rc == 0) {
	in.nvIndex = nvIndex;
	in.policySession = policySession;
	in.offset = offset;
	in.operation = operation;
    }
    if (operandBData != NULL) {
	rc = TSS_TPM2B_StringCopy(&in.operandB.b,
				  operandBData, sizeof(in.operandB.t.buffer));
	
    }
    if (operandBFilename != NULL) {
	rc = TSS_File_Read2B(&in.operandB.b,
			     sizeof(in.operandB.t.buffer),
			     operandBFilename);
    }
    /* Start a TSS context */
    if (rc == 0) {
	rc = TSS_Create(&tssContext);
    }
    /* call TSS to execute the command */
    if (rc == 0) {
	rc = TSS_Execute(tssContext,
			 NULL, 
			 (COMMAND_PARAMETERS *)&in,
			 NULL,
			 TPM_CC_PolicyNV,
			 sessionHandle0, authPassword, sessionAttributes0,
			 sessionHandle1, NULL, sessionAttributes1,
			 sessionHandle2, NULL, sessionAttributes2,
			 TPM_RH_NULL, NULL, 0);
    }
    {
	TPM_RC rc1 = TSS_Delete(tssContext);
	if (rc == 0) {
	    rc = rc1;
	}
    }
    if (rc == 0) {
	if (tssUtilsVerbose) printf("policynv: success\n");
    }
    else {
	const char *msg;
	const char *submsg;
	const char *num;
	printf("policynv: failed, rc %08x\n", rc);
	TSS_ResponseCode_toString(&msg, &submsg, &num, rc);
	printf("%s%s%s\n", msg, submsg, num);
	rc = EXIT_FAILURE;
    }
    return rc;
}

static void printUsage(void)
{
    printf("\n");
    printf("policynv\n");
    printf("\n");
    printf("Runs TPM2_PolicyNV\n");
    printf("\n");
    printf("\t[-hi\thierarchy authHandle (o, p)]\n");
    printf("\t\tdefault NV index\n");
    printf("\n");
    printf("\t-ha\tNV index handle (operand A)\n");
    printf("\t[-pwda\tpassword for authorization (default empty)]\n");
    printf("\t-hs\tpolicy session handle\n");
    printf("\t-ic\tdata string (operandB)\n");
    printf("\t-if\tdata file (operandB) \n");
    printf("\t[-off\toffset (default 0)]\n");
    printf("\t-op\toperation (default A = B)\n");
    printf("\n");
    printf("\t\t0	A = B \n");
    printf("\t\t1	A != B \n");
    printf("\t\t2	A > B signed	 \n");
    printf("\t\t3	A > B unsigned	 \n");
    printf("\t\t4	A < B signed	 \n");
    printf("\t\t5	A < B unsigned	 \n");
    printf("\t\t6	A >= B signed	 \n");
    printf("\t\t7	A >= B unsigned	 \n");
    printf("\t\t8	A <= B signed	 \n");
    printf("\t\t9	A <= B unsigned	 \n");
    printf("\t\tA	All bits SET in B are SET in A. ((A&B)=B) \n");
    printf("\t\tB	All bits SET in B are CLEAR in A. ((A&B)=0) \n");
    printf("\n");
    printf("\t-se[0-2] session handle / attributes (default PWAP)\n");
    printf("\t01\tcontinue\n");
    printf("\t20\tcommand decrypt\n");
    exit(1);	
}