1 files changed, 295 insertions, 0 deletions
diff --git a/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/getrandom.c b/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/getrandom.c
new file mode 100644
index 000000000..c6c3f31a6
--- /dev/null
+++ b/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/getrandom.c
@@ -0,0 +1,295 @@
+/********************************************************************************/
+/*										*/
+/*			   GetRandom						*/
+/*			     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>
+#include <ibmtss/Unmarshal_fp.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;
+    GetRandom_In 		in;
+    GetRandom_Out 		out;
+    uint32_t			bytesRequested = 0;
+    uint32_t 			bytesCopied;
+    const char 			*outFilename = NULL;
+    unsigned char 		*randomBuffer = NULL;
+    int				noZeros = FALSE;
+    int				noSpace = FALSE;
+    TPMI_SH_AUTH_SESSION    	sessionHandle0 = TPM_RH_NULL;
+    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],"-by") == 0) {
+	    i++;
+	    if (i < argc) {
+		sscanf(argv[i],"%u", &bytesRequested);
+	    }
+	    else {
+		printf("Missing parameter for -by\n");
+		printUsage();
+	    }
+	}
+	else if (strcmp(argv[i],"-of") == 0) {
+	    i++;
+	    if (i < argc) {
+		outFilename = argv[i];
+	    }
+	    else {
+		printf("-of option needs a value\n");
+		printUsage();
+	    }
+	}
+ 	else if (strcmp(argv[i],"-nz") == 0) {
+	    noZeros = TRUE;
+	}
+ 	else if (strcmp(argv[i],"-ns") == 0) {
+	    noSpace = TRUE;
+	}
+	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 ((bytesRequested == 0) ||
+	(bytesRequested > 0xffff)) {
+	printf("Missing or bad parameter -by\n");
+	printUsage();
+    }
+    /* allocate a buffer for the bytes requested, add 1 for optional nul terminator */
+    if (rc == 0) {
+	rc = TSS_Malloc(&randomBuffer, bytesRequested + 1);	/* freed @1 */
+    }
+    /* Start a TSS context */
+    if (rc == 0) {
+	rc = TSS_Create(&tssContext);
+    }
+    /* This is somewhat optimized, but if a zero byte is obtained in the last pass, an extra pass is
+       needed.  The trade-off is that, in general, asking for more random numbers than needed may slow
+       down the TPM.  In any case, needing non-zero values for random auth should not happen very
+       often.
+     */
+    for (bytesCopied = 0 ; (rc == 0) && (bytesCopied < bytesRequested) ; ) {
+	/* Request whatever is left */
+	if (rc == 0) {
+	    in.bytesRequested = bytesRequested - bytesCopied;
+	}
+	/* call TSS to execute the command */
+	if (rc == 0) {
+	    rc = TSS_Execute(tssContext,
+			     (RESPONSE_PARAMETERS *)&out, 
+			     (COMMAND_PARAMETERS *)&in,
+			     NULL,
+			     TPM_CC_GetRandom,
+			     sessionHandle0, NULL, sessionAttributes0,
+			     sessionHandle1, NULL, sessionAttributes1,
+			     sessionHandle2, NULL, sessionAttributes2,
+			     TPM_RH_NULL, NULL, 0);
+	}
+	if (rc == 0) {
+	    size_t br;
+	    if (tssUtilsVerbose) TSS_PrintAll("randomBytes in pass",
+				      out.randomBytes.t.buffer, out.randomBytes.t.size);
+	    /* copy as many bytes as were received or until bytes requested */
+	    for (br = 0 ; (br < out.randomBytes.t.size) && (bytesCopied < bytesRequested) ; br++) {
+
+		if (!noZeros || (out.randomBytes.t.buffer[br] != 0)) {
+		    randomBuffer[bytesCopied] = out.randomBytes.t.buffer[br];
+		    bytesCopied++;
+		}
+	    }
+	}
+	if (rc == 0) {
+	    if (noZeros) {
+		randomBuffer[bytesCopied] = 0x00;
+	    }
+	}
+    }
+    {
+	TPM_RC rc1 = TSS_Delete(tssContext);
+	if (rc == 0) {
+	    rc = rc1;
+	}
+    }
+    if ((rc == 0) && (outFilename != NULL)) {
+	rc = TSS_File_WriteBinaryFile(randomBuffer, bytesRequested + (noZeros ? 1 : 0),
+				      outFilename);
+    }
+    if (rc == 0) {
+	/* machine readable format */
+	if (noSpace) {
+	    uint32_t bp;
+	    for (bp = 0 ; bp < bytesRequested ; bp++) {
+		printf("%02x", randomBuffer[bp]);
+	    }
+	    printf("\n");
+	}
+	/* human readable format */
+	else {
+	    TSS_PrintAll("randomBytes", randomBuffer, bytesRequested);
+	}
+    }
+    else {
+	const char *msg;
+	const char *submsg;
+	const char *num;
+	printf("getrandom: failed, rc %08x\n", rc);
+	TSS_ResponseCode_toString(&msg, &submsg, &num, rc);
+	printf("%s%s%s\n", msg, submsg, num);
+	rc = EXIT_FAILURE;
+    }
+    free(randomBuffer);		/* @1 */
+    return rc;
+}
+
+static void printUsage(void)
+{
+    printf("\n");
+    printf("getrandom\n");
+    printf("\n");
+    printf("Runs TPM2_GetRandom\n");
+    printf("\n");
+    printf("\t-by\tbytes requested\n");
+    printf("\t[-of\toutput file, with -nz, appends nul terminator (default do not save)]\n");
+    printf("\t[-nz\tget random number with no zero bytes (for authorization value)]\n");
+    printf("\t[-ns\tno space, no text, no newlines]\n");
+    printf("\t\tjust a string of hexascii suitable for a symmetric key\n");
+    printf("\n");
+    printf("\t-se[0-2] session handle / attributes (default NULL)\n");
+    printf("\t01\tcontinue\n");
+    printf("\t40\tresponse encrypt\n");
+    exit(1);	
+}