[libtpms.git] / src / tpm_tpm12_interface.c

/********************************************************************************/
/*										*/
/*			LibTPM TPM 1.2 call interface functions				*/
/*			     Written by Stefan Berger				*/
/*		       IBM Thomas J. Watson Research Center			*/
/*										*/
/* (c) Copyright IBM Corporation 2015.						*/
/*										*/
/* 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 <config.h>

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>

#include "tpm12/tpm_debug.h"
#include "tpm_error.h"
#include "tpm12/tpm_init.h"
#include "tpm_library_intern.h"
#include "tpm12/tpm_process.h"
#include "tpm12/tpm_startup.h"

TPM_RESULT TPM12_MainInit(void)
{
    return TPM_MainInit();
}

void TPM12_Terminate(void)
{
    TPM_Global_Delete(tpm_instances[0]);
    free(tpm_instances[0]);
    tpm_instances[0] = NULL;
}

TPM_RESULT TPM12_Process(unsigned char **respbuffer, uint32_t *resp_size,
                         uint32_t *respbufsize,
		         unsigned char *command, uint32_t command_size)
{
    *resp_size = 0;
    return TPM_ProcessA(respbuffer, resp_size, respbufsize,
                        command, command_size);
}

TPM_RESULT TPM12_VolatileAllStore(unsigned char **buffer,
                                  uint32_t *buflen)
{
    TPM_RESULT rc;
    TPM_STORE_BUFFER tsb;
    TPM_Sbuffer_Init(&tsb);
    uint32_t total;

#ifdef TPM_DEBUG
    assert(tpm_instances[0] != NULL);
#endif

    rc = TPM_VolatileAll_Store(&tsb, tpm_instances[0]);

    if (rc == TPM_SUCCESS) {
        /* caller now owns the buffer and needs to free it */
        TPM_Sbuffer_GetAll(&tsb, buffer, buflen, &total);
    } else {
        TPM_Sbuffer_Delete(&tsb);
        *buflen = 0;
        *buffer = NULL;
    }

    return rc;
}

TPM_RESULT TPM12_GetTPMProperty(enum TPMLIB_TPMProperty prop,
                                int *result)
{
    switch (prop) {
    case  TPMPROP_TPM_RSA_KEY_LENGTH_MAX:
        *result = TPM_RSA_KEY_LENGTH_MAX;
        break;

    case  TPMPROP_TPM_KEY_HANDLES:
        *result = TPM_KEY_HANDLES;
        break;

    case  TPMPROP_TPM_OWNER_EVICT_KEY_HANDLES:
        *result = TPM_OWNER_EVICT_KEY_HANDLES;
        break;

    case  TPMPROP_TPM_MIN_AUTH_SESSIONS:
        *result = TPM_MIN_AUTH_SESSIONS;
        break;

    case  TPMPROP_TPM_MIN_TRANS_SESSIONS:
        *result = TPM_MIN_TRANS_SESSIONS;
        break;

    case  TPMPROP_TPM_MIN_DAA_SESSIONS:
        *result = TPM_MIN_DAA_SESSIONS;
        break;

    case  TPMPROP_TPM_MIN_SESSION_LIST:
        *result = TPM_MIN_SESSION_LIST;
        break;

    case  TPMPROP_TPM_MIN_COUNTERS:
        *result = TPM_MIN_COUNTERS;
        break;

    case  TPMPROP_TPM_NUM_FAMILY_TABLE_ENTRY_MIN:
        *result = TPM_NUM_FAMILY_TABLE_ENTRY_MIN;
        break;

    case  TPMPROP_TPM_NUM_DELEGATE_TABLE_ENTRY_MIN:
        *result = TPM_NUM_DELEGATE_TABLE_ENTRY_MIN;
        break;

    case  TPMPROP_TPM_SPACE_SAFETY_MARGIN:
        *result = TPM_SPACE_SAFETY_MARGIN;
        break;

    case  TPMPROP_TPM_MAX_NV_SPACE:
        /* fill up 20 kb.; this provides some safety margin (currently
           >4Kb) for possible future expansion of this blob */
        *result = ROUNDUP(TPM_MAX_NV_SPACE, 20 * 1024);
        break;

    case  TPMPROP_TPM_MAX_SAVESTATE_SPACE:
        *result = TPM_MAX_SAVESTATE_SPACE;
        break;

    case  TPMPROP_TPM_MAX_VOLATILESTATE_SPACE:
        *result = TPM_MAX_VOLATILESTATE_SPACE;
        break;

    default:
        return TPM_FAIL;
    }

    return TPM_SUCCESS;
}

static uint32_t tpm12_buffersize = TPM_BUFFER_MAX;

uint32_t TPM12_SetBufferSize(uint32_t wanted_size,
                             uint32_t *min_size,
                             uint32_t *max_size)
{
    if (min_size)
        *min_size = TPM_BUFFER_MIN;
    if (max_size)
        *max_size = TPM_BUFFER_MAX;

    if (wanted_size == 0)
        return tpm12_buffersize;

    if (wanted_size > TPM_BUFFER_MAX)
        wanted_size = TPM_BUFFER_MAX;
    else if (wanted_size < TPM_BUFFER_MIN)
        wanted_size = TPM_BUFFER_MIN;

    tpm12_buffersize = wanted_size;

    return tpm12_buffersize;
}

uint32_t TPM12_GetBufferSize(void)
{
    return TPM12_SetBufferSize(0, NULL, NULL);
}

const struct tpm_interface TPM12Interface = {
    .MainInit = TPM12_MainInit,
    .Terminate = TPM12_Terminate,
    .Process = TPM12_Process,
    .VolatileAllStore = TPM12_VolatileAllStore,
    .GetTPMProperty = TPM12_GetTPMProperty,
    .TpmEstablishedGet = TPM12_IO_TpmEstablished_Get,
    .HashStart = TPM12_IO_Hash_Start,
    .HashData = TPM12_IO_Hash_Data,
    .HashEnd = TPM12_IO_Hash_End,
    .SetBufferSize = TPM12_SetBufferSize,
};
Commit	Line	Data
39c9604a SB	1	/********************************************************************************/
	2	/* */
	3	/* LibTPM TPM 1.2 call interface functions */
	4	/* Written by Stefan Berger */
	5	/* IBM Thomas J. Watson Research Center */
	6	/* */
	7	/* (c) Copyright IBM Corporation 2015. */
	8	/* */
	9	/* All rights reserved. */
	10	/* */
	11	/* Redistribution and use in source and binary forms, with or without */
	12	/* modification, are permitted provided that the following conditions are */
	13	/* met: */
	14	/* */
	15	/* Redistributions of source code must retain the above copyright notice, */
	16	/* this list of conditions and the following disclaimer. */
	17	/* */
	18	/* Redistributions in binary form must reproduce the above copyright */
	19	/* notice, this list of conditions and the following disclaimer in the */
	20	/* documentation and/or other materials provided with the distribution. */
	21	/* */
	22	/* Neither the names of the IBM Corporation nor the names of its */
	23	/* contributors may be used to endorse or promote products derived from */
	24	/* this software without specific prior written permission. */
	25	/* */
	26	/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
	27	/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
	28	/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */
	29	/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */
	30	/* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
	31	/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
	32	/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
	33	/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY */
	34	/* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
	35	/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */
	36	/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
	37	/********************************************************************************/
	38
	39	#include <config.h>
	40
	41	#include <assert.h>
	42	#include <stdio.h>
	43	#include <stdlib.h>
	44
	45	#include "tpm12/tpm_debug.h"
	46	#include "tpm_error.h"
	47	#include "tpm12/tpm_init.h"
	48	#include "tpm_library_intern.h"
	49	#include "tpm12/tpm_process.h"
	50	#include "tpm12/tpm_startup.h"
	51
	52	TPM_RESULT TPM12_MainInit(void)
	53	{
	54	return TPM_MainInit();
	55	}
	56
	57	void TPM12_Terminate(void)
	58	{
	59	TPM_Global_Delete(tpm_instances[0]);
	60	free(tpm_instances[0]);
	61	tpm_instances[0] = NULL;
	62	}
	63
	64	TPM_RESULT TPM12_Process(unsigned char *respbuffer, uint32_t resp_size,
65	uint32_t *respbufsize,
66	unsigned char *command, uint32_t command_size)
67	{
68	*resp_size = 0;
69	return TPM_ProcessA(respbuffer, resp_size, respbufsize,
70	command, command_size);
71	}
72
73	TPM_RESULT TPM12_VolatileAllStore(unsigned char **buffer,
74	uint32_t *buflen)
75	{
76	TPM_RESULT rc;
77	TPM_STORE_BUFFER tsb;
78	TPM_Sbuffer_Init(&tsb);
79	uint32_t total;
80
81	#ifdef TPM_DEBUG
82	assert(tpm_instances[0] != NULL);
83	#endif
84
85	rc = TPM_VolatileAll_Store(&tsb, tpm_instances[0]);
86
87	if (rc == TPM_SUCCESS) {
88	/* caller now owns the buffer and needs to free it */
89	TPM_Sbuffer_GetAll(&tsb, buffer, buflen, &total);
90	} else {
91	TPM_Sbuffer_Delete(&tsb);
92	*buflen = 0;
93	*buffer = NULL;
94	}
95
96	return rc;
97	}
98
99	TPM_RESULT TPM12_GetTPMProperty(enum TPMLIB_TPMProperty prop,
100	int *result)
101	{
102	switch (prop) {
103	case TPMPROP_TPM_RSA_KEY_LENGTH_MAX:
104	*result = TPM_RSA_KEY_LENGTH_MAX;
105	break;
106
107	case TPMPROP_TPM_KEY_HANDLES:
108	*result = TPM_KEY_HANDLES;
109	break;
110
111	case TPMPROP_TPM_OWNER_EVICT_KEY_HANDLES:
112	*result = TPM_OWNER_EVICT_KEY_HANDLES;
113	break;
114
115	case TPMPROP_TPM_MIN_AUTH_SESSIONS:
116	*result = TPM_MIN_AUTH_SESSIONS;
117	break;
118
119	case TPMPROP_TPM_MIN_TRANS_SESSIONS:
120	*result = TPM_MIN_TRANS_SESSIONS;
121	break;
122
123	case TPMPROP_TPM_MIN_DAA_SESSIONS:
124	*result = TPM_MIN_DAA_SESSIONS;
125	break;
126
127	case TPMPROP_TPM_MIN_SESSION_LIST:
128	*result = TPM_MIN_SESSION_LIST;
129	break;
130
131	case TPMPROP_TPM_MIN_COUNTERS:
132	*result = TPM_MIN_COUNTERS;
133	break;
134
135	case TPMPROP_TPM_NUM_FAMILY_TABLE_ENTRY_MIN:
136	*result = TPM_NUM_FAMILY_TABLE_ENTRY_MIN;
137	break;
138
139	case TPMPROP_TPM_NUM_DELEGATE_TABLE_ENTRY_MIN:
140	*result = TPM_NUM_DELEGATE_TABLE_ENTRY_MIN;
141	break;
142
143	case TPMPROP_TPM_SPACE_SAFETY_MARGIN:
144	*result = TPM_SPACE_SAFETY_MARGIN;
145	break;
146
147	case TPMPROP_TPM_MAX_NV_SPACE:
148	/* fill up 20 kb.; this provides some safety margin (currently
149	>4Kb) for possible future expansion of this blob */
150	result = ROUNDUP(TPM_MAX_NV_SPACE, 20 1024);
151	break;
152
153	case TPMPROP_TPM_MAX_SAVESTATE_SPACE:
154	*result = TPM_MAX_SAVESTATE_SPACE;
155	break;
156
157	case TPMPROP_TPM_MAX_VOLATILESTATE_SPACE:
158	*result = TPM_MAX_VOLATILESTATE_SPACE;
159	break;
160
161	default:
162	return TPM_FAIL;
163	}
164
165	return TPM_SUCCESS;
166	}
167
ccdf2457 SB	168	static uint32_t tpm12_buffersize = TPM_BUFFER_MAX;
ccdf2457 SB	169
ae3f105a SB	170	uint32_t TPM12_SetBufferSize(uint32_t wanted_size,
	171	uint32_t *min_size,
	172	uint32_t *max_size)
bc195a34	173	{
ae3f105a	174	if (min_size)
ccdf2457	175	*min_size = TPM_BUFFER_MIN;
ae3f105a SB	176	if (max_size)
ae3f105a SB	177	*max_size = TPM_BUFFER_MAX;
ccdf2457	178
d77f29d6 SB	179	if (wanted_size == 0)
	180	return tpm12_buffersize;
	181
ccdf2457 SB	182	if (wanted_size > TPM_BUFFER_MAX)
	183	wanted_size = TPM_BUFFER_MAX;
	184	else if (wanted_size < TPM_BUFFER_MIN)
	185	wanted_size = TPM_BUFFER_MIN;
	186
	187	tpm12_buffersize = wanted_size;
	188
	189	return tpm12_buffersize;
	190	}
	191
	192	uint32_t TPM12_GetBufferSize(void)
	193	{
	194	return TPM12_SetBufferSize(0, NULL, NULL);
bc195a34 SB	195	}
bc195a34 SB	196
39c9604a SB	197	const struct tpm_interface TPM12Interface = {
	198	.MainInit = TPM12_MainInit,
	199	.Terminate = TPM12_Terminate,
	200	.Process = TPM12_Process,
	201	.VolatileAllStore = TPM12_VolatileAllStore,
	202	.GetTPMProperty = TPM12_GetTPMProperty,
	203	.TpmEstablishedGet = TPM12_IO_TpmEstablished_Get,
	204	.HashStart = TPM12_IO_Hash_Start,
	205	.HashData = TPM12_IO_Hash_Data,
	206	.HashEnd = TPM12_IO_Hash_End,
bc195a34	207	.SetBufferSize = TPM12_SetBufferSize,
39c9604a	208	};