tpm_unsealdata tool added

Signed-off-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com>

Author: srajiv

src/cmds/Makefile.am

@@ -21,14 +21,16 @@
 #       http://www.opensource.org/licenses/cpl1.0.php.
 #
 
-bin_PROGRAMS 	=	tpm_sealdata
+bin_PROGRAMS 	=	tpm_sealdata \
+			tpm_unsealdata
 
 if TSS_LIB_IS_12
 AM_CPPFLAGS	=	-I$(top_builddir)/include -D_LINUX -DTSS_LIB_IS_12
 else
 AM_CPPFLAGS	=	-I$(top_builddir)/include -D_LINUX
 endif
 
-LDADD		=	$(top_builddir)/lib/libtpm_tspi.la -ltspi
+LDADD		=	$(top_builddir)/lib/libtpm_tspi.la -ltspi $(top_builddir)/lib/libtpm_unseal.la -ltpm_unseal
 
 tpm_sealdata_SOURCES = tpm_sealdata.c
+tpm_unsealdata_SOURCES = tpm_unsealdata.c

src/cmds/tpm_unsealdata.c

@@ -0,0 +1,98 @@
+/*
+ * The Initial Developer of the Original Code is International
+ * Business Machines Corporation. Portions created by IBM
+ * Corporation are Copyright (C) 2009 International Business
+ * Machines Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the Common Public License as published by
+ * IBM Corporation; either version 1 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * Common Public License for more details.
+ *
+ * You should have received a copy of the Common Public License
+ * along with this program; if not, a copy can be viewed at
+ * http://www.opensource.org/licenses/cpl1.0.php.
+ */
+#include <limits.h>
+#include "tpm_tspi.h"
+#include "tpm_utils.h"
+#include "tpm_unseal.h"
+
+static void help(const char *aCmd)
+{
+	logCmdHelp(aCmd);
+	logCmdOption("-i, --infile FILE",
+		     _
+		     ("Filename containing data to unseal."));
+	logCmdOption("-o, --outfile FILE",
+		     _
+		     ("Filename to write unsealed data to.  Default is STDOUT."));
+}
+
+static char in_filename[PATH_MAX] = "", out_filename[PATH_MAX] = "";
+
+static int parse(const int aOpt, const char *aArg)
+{
+	int rc = -1;
+
+	switch (aOpt) {
+	case 'i':
+		if (aArg) {
+			strncpy(in_filename, aArg, PATH_MAX);
+			rc = 0;
+		}
+		break;
+	case 'o':
+		if (aArg) {
+			strncpy(out_filename, aArg, PATH_MAX);
+			rc = 0;
+		}
+		break;
+	default:
+		break;
+	}
+	return rc;
+
+}
+
+int main(int argc, char **argv)
+{
+
+	struct option opts[] =
+	    { {"infile", required_argument, NULL, 'i'},
+	{"outfile", required_argument, NULL, 'o'},
+	};
+	FILE *fp;
+	int rc=0, tss_size=0, i;
+	unsigned char* tss_data = NULL;
+
+
+	if (genericOptHandler(argc, argv, "i:o", opts,
+			      sizeof(opts) / sizeof(struct option), parse,
+			      help) != 0)
+		return rc;
+	
+	rc = tpmUnsealFile(in_filename, &tss_data, &tss_size);
+
+	if (strlen(out_filename) == 0) {
+		printf("\n----\n");
+		for (i=0; i < tss_size; i++)
+			printf("%c", tss_data[i]);
+		printf("\n----\n");
+		free(tss_data);
+		return rc;
+	} else if ((fp = fopen(out_filename, "w")) == NULL) {
+			logError(_("Unable to open output file"));
+			return rc;
+	}
+
+	fwrite(tss_data, tss_size, 1, fp);
+	fclose(fp);
+	free(tss_data);
+	return rc;
+}