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Diffstat (limited to '')
| -rw-r--r-- | src/tpm2/NVMarshal.c | 4916 |
1 files changed, 4916 insertions, 0 deletions
diff --git a/src/tpm2/NVMarshal.c b/src/tpm2/NVMarshal.c new file mode 100644 index 0000000..c7cd1e0 --- /dev/null +++ b/src/tpm2/NVMarshal.c @@ -0,0 +1,4916 @@ +/********************************************************************************/ +/* */ +/* Marshalling and unmarshalling of state */ +/* Written by Stefan Berger */ +/* IBM Thomas J. Watson Research Center */ +/* */ +/* (c) Copyright IBM Corporation 2017,2018. */ +/* */ +/* 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 <string.h> +#include <inttypes.h> + +#include "assert.h" + +#define _CRYPT_HASH_C_ +#define SESSION_PROCESS_C +#define NV_C +#define OBJECT_C +#define PCR_C +#define SESSION_C +#include "Platform.h" +#include "NVMarshal.h" +#include "Marshal_fp.h" +#include "Unmarshal_fp.h" +#include "Global.h" +#include "TpmTcpProtocol.h" +#include "Simulator_fp.h" + +#define TPM_HAVE_TPM2_DECLARATIONS +#include "tpm_library_intern.h" + +/* + * The TPM2 maintains a pcrAllocated shadow variable; the current active one is + * in gp.pcrAllocated and the one to be active after reboot is in NVRAM. So, + * this means we have to restore two of these variables when we resume. The + * tricky part is that the global gp will be restored by reading from NVRAM. + * Once that has been done the gp.pcrAllocated needs to be restored with the + * one that is supposed to be active. All of this is only supposed to happen + * when we resume a VM's volatile state. + */ +static struct shadow { + TPML_PCR_SELECTION pcrAllocated; + BOOL pcrAllocatedIsNew; +} shadow; + +/* prevent misconfiguration: */ +typedef char assertion_failed_nvram[ + (NV_USER_DYNAMIC_END < NV_USER_DYNAMIC) ? -1 : 0]; + +typedef struct +{ + UINT16 version; + UINT32 magic; + UINT16 min_version; /* min. implementation version to accept the blob */ +} NV_HEADER; + +static UINT8 BOOL_Marshal(BOOL *boolean, BYTE **buffer, INT32 *size); +static TPM_RC BOOL_Unmarshal(BOOL *boolean, BYTE **buffer, INT32 *size); + +/* + * There are compile-time optional variables that we marshal. To allow + * for some flexibility, we marshal them in such a way that these + * variables can be skipped if they are in the byte stream but are not + * needed by the implementation. The following block_skip data structure + * and related functions address this issue. + */ +typedef struct { + size_t idx; + size_t sz; + struct position { + BYTE *buffer; + INT32 size; + } pos[5]; /* more only needed for nested compile-time #ifdef's */ +} block_skip; + +/* + * This function is to be called when an optional block follows. It inserts + * a BOOL into the byte stream indicating whether the block is there or not. + * Then it leaves a 16bit zero in the byt stream and remembers the location + * of that zero. We will update the location with the number of optional + * bytes written when block_skip_write_pop() is called. + */ +static UINT16 +block_skip_write_push(block_skip *bs, BOOL has_block, + BYTE **buffer, INT32 *size) { + UINT16 written , w; + UINT16 zero = 0; + written = BOOL_Marshal(&has_block, buffer, size); + bs->pos[bs->idx].buffer = *buffer; + bs->pos[bs->idx].size = *size; + w = UINT16_Marshal(&zero, buffer, size); + if (w) { + bs->idx++; + pAssert(bs->idx < bs->sz); + written += w; + } + return written; +} + +/* + * This function must be called for every block_skip_write_push() call. + * It has to be called once a compile-time optional block has been + * processed. It must be called after the #endif. + * In this function we updated the previously remembered location with + * the numbers of bytes to skip in case a block is there but it is not + * needed. + */ +static void +block_skip_write_pop(block_skip *bs, INT32 *size) { + UINT16 skip; + unsigned i = --bs->idx; + pAssert((int)bs->idx >= 0); + skip = bs->pos[i].size - *size - sizeof(UINT16); + UINT16_Marshal(&skip, &bs->pos[i].buffer, &bs->pos[i].size); +} + +/* + * This function must be called when unmarshalling a byte stream and + * a compile-time optional block follows. In case the compile-time + * optional block is there but not in the byte stream, we log an error. + * In case the bytes stream contains the block, but we don't need it + * we skip it. In the other cases we don't need to do anything since + * the code is 'in sync' with the byte stream. + */ +static TPM_RC +block_skip_read(BOOL needs_block, BYTE **buffer, INT32 *size, + const char *name, const char *field, + BOOL *skip_code) +{ + TPM_RC rc = TPM_RC_SUCCESS; + BOOL has_block; + UINT16 blocksize; + + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&has_block, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&blocksize, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + if (!has_block && needs_block) { + TPMLIB_LogTPM2Error("%s needs missing %s\n", name, field); + rc = TPM_RC_BAD_PARAMETER; + } else if (has_block && !needs_block) { + /* byte stream has the data but we don't need them */ + *buffer += blocksize; + *size -= blocksize; + *skip_code = TRUE; + } + } + return rc; +} + +#define BLOCK_SKIP_INIT \ + block_skip block_skip = { \ + .idx = 0, \ + .sz = ARRAY_SIZE(block_skip.pos), \ + } + +#define BLOCK_SKIP_WRITE_PUSH(HAS_BLOCK, BUFFER, POS) \ + block_skip_write_push(&block_skip, HAS_BLOCK, BUFFER, POS) + +#define BLOCK_SKIP_WRITE_POP(SIZE) \ + block_skip_write_pop(&block_skip, SIZE) + +#define BLOCK_SKIP_WRITE_CHECK \ + pAssert(block_skip.idx == 0) + +#define BLOCK_SKIP_READ(SKIP_MARK, NEEDS_BLOCK, BUFFER, SIZE, NAME, FIELD) \ + { \ + BOOL skip_code = FALSE; \ + rc = block_skip_read(NEEDS_BLOCK, buffer, size, \ + NAME, FIELD, &skip_code); \ + if (rc == TPM_RC_SUCCESS && skip_code) \ + goto SKIP_MARK; \ + } + +static unsigned int _ffsll(long long bits) +{ + size_t i = 0; + + for (i = 0; i < 8 * sizeof(bits); i++) { + if (bits & (1ULL << i)) + return i + 1; + } + return 0; +} + +/* BOOL is 'int' but we store a single byte */ +static UINT8 +BOOL_Marshal(BOOL *boolean, BYTE **buffer, INT32 *size) +{ + UINT8 _bool = (*boolean != 0); + UINT16 written = 0; + written += UINT8_Marshal(&_bool, buffer, size); + return written; +} + +static TPM_RC +BOOL_Unmarshal(BOOL *boolean, BYTE **buffer, INT32 *size) +{ + UINT8 _bool; + TPM_RC rc = TPM_RC_SUCCESS; + + if (rc == TPM_RC_SUCCESS) { + rc = UINT8_Unmarshal(&_bool, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + *boolean = (_bool != 0); + } + + return rc; +} + +static UINT16 +SEED_COMPAT_LEVEL_Marshal(SEED_COMPAT_LEVEL *source, + BYTE **buffer, INT32 *size) +{ + return UINT8_Marshal((UINT8 *)source, buffer, size); +} + +static TPM_RC +SEED_COMPAT_LEVEL_Unmarshal(SEED_COMPAT_LEVEL *source, + BYTE **buffer, INT32 *size, + const char *name) +{ + TPM_RC rc; + + rc = UINT8_Unmarshal((UINT8 *)source, buffer, size); + if (rc == TPM_RC_SUCCESS && *source > SEED_COMPAT_LEVEL_LAST) { + TPMLIB_LogTPM2Error("%s compatLevel '%u' higher than supported '%u'\n", + name, *source, SEED_COMPAT_LEVEL_LAST); + rc = TPM_RC_BAD_VERSION; + } + return rc; +} + +static int +TPM2B_Cmp(const TPM2B *t1, const TPM2B *t2) +{ + if (t1->size != t2->size) + return 1; + + return memcmp(t1->buffer, t2->buffer, t1->size); +} + +static UINT16 +TPM2B_PROOF_Marshal(TPM2B_PROOF *source, BYTE **buffer, INT32 *size) +{ + UINT16 written = 0; + written += TPM2B_Marshal(&source->b, sizeof(source->t.buffer), buffer, size); + return written; +} + +static TPM_RC +TPM2B_PROOF_Unmarshal(TPM2B_PROOF *target, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_Unmarshal(&target->b, sizeof(target->t.buffer), buffer, size); + } + return rc; +} + +static TPM_RC +UINT32_Unmarshal_Check(UINT32 *data, UINT32 exp, BYTE **buffer, INT32 *size, + const char *msg) +{ + TPM_RC rc = TPM_RC_SUCCESS; + + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(data, buffer, size); + } + if (rc == TPM_RC_SUCCESS && exp != *data) { + TPMLIB_LogTPM2Error("%s: Expected value: 0x%08x, found: 0x%08x\n", + __func__, exp, *data); + rc = TPM_RC_BAD_TAG; + } + return rc; +} + +static void +NV_HEADER_INIT(NV_HEADER *t, UINT16 version, UINT32 magic, UINT16 min_version) +{ + t->version = version; + t->magic = magic; + t->min_version = min_version; +} + +static UINT16 +NV_HEADER_Marshal(BYTE **buffer, INT32 *size, UINT16 version, UINT32 magic, + UINT16 min_version) +{ + UINT16 written; + NV_HEADER hdr; + + NV_HEADER_INIT(&hdr, version, magic, min_version); + + written = UINT16_Marshal(&hdr.version, buffer, size); + written += UINT32_Marshal(&hdr.magic, buffer, size); + if (version >= 2) + written += UINT16_Marshal(&hdr.min_version, buffer, size); + + return written; +} + +static TPM_RC +NV_HEADER_UnmarshalVerbose(NV_HEADER *data, BYTE **buffer, INT32 *size, + UINT16 cur_version, UINT32 exp_magic, BOOL verbose) +{ + TPM_RC rc = TPM_RC_SUCCESS; + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&data->version, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->magic, buffer, size); + } + if (rc == TPM_RC_SUCCESS && exp_magic != data->magic) { + if (verbose) + TPMLIB_LogTPM2Error("%s: Invalid magic. Expected 0x%08x, got 0x%08x\n", + __func__, exp_magic, data->magic); + rc = TPM_RC_BAD_TAG; + } + + data->min_version = 0; + if (rc == TPM_RC_SUCCESS && data->version >= 2) { + + rc = UINT16_Unmarshal(&data->min_version, buffer, size); + + if (rc == TPM_RC_SUCCESS && data->min_version > cur_version) { + if (verbose) + TPMLIB_LogTPM2Error("%s: Minimum version %u higher than " + "implementation version %u for type 0x%08x\n", + __func__, data->min_version, cur_version, + exp_magic); + rc = TPM_RC_BAD_VERSION; + } + } + + return rc; +} + +static TPM_RC +NV_HEADER_Unmarshal(NV_HEADER *data, BYTE **buffer, INT32 *size, + UINT16 cur_version, UINT32 exp_magic) +{ + return NV_HEADER_UnmarshalVerbose(data, buffer, size, cur_version, + exp_magic, true); +} + +#define NV_INDEX_MAGIC 0x2547265a +#define NV_INDEX_VERSION 2 +static UINT16 +NV_INDEX_Marshal(NV_INDEX *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + NV_INDEX_VERSION, + NV_INDEX_MAGIC, 1); + + written += TPMS_NV_PUBLIC_Marshal(&data->publicArea, buffer, size); + written += TPM2B_AUTH_Marshal(&data->authValue, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +NV_INDEX_Unmarshal(NV_INDEX *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + NV_INDEX_VERSION, NV_INDEX_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = TPMS_NV_PUBLIC_Unmarshal(&data->publicArea, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&data->authValue, buffer, size); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "NV_INDEX", "version 3 or later"); + /* future versions nest-append here */ + } +skip_future_versions: + return rc; +} + +#define DRBG_STATE_MAGIC 0x6fe83ea1 +#define DRBG_STATE_VERSION 2 +static UINT16 +DRBG_STATE_Marshal(DRBG_STATE *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + size_t i; + UINT16 array_size; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + DRBG_STATE_VERSION, DRBG_STATE_MAGIC, 1); + written += UINT64_Marshal(&data->reseedCounter, buffer, size); + written += UINT32_Marshal(&data->magic, buffer, size); + + array_size = sizeof(data->seed.bytes); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal(&data->seed.bytes[0], array_size, buffer, size); + + array_size = ARRAY_SIZE(data->lastValue); + written += UINT16_Marshal(&array_size, buffer, size); + for (i = 0; i < array_size; i++) { + written += UINT32_Marshal(&data->lastValue[i], buffer, size); + } + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +DRBG_STATE_Unmarshal(DRBG_STATE *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc= TPM_RC_SUCCESS; + size_t i; + NV_HEADER hdr; + UINT16 array_size = 0; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + DRBG_STATE_VERSION, DRBG_STATE_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->reseedCounter, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->magic, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + if (array_size != ARRAY_SIZE(data->seed.bytes)) { + TPMLIB_LogTPM2Error("Non-matching DRBG_STATE seed array size. " + "Expected %zu, got %u\n", + ARRAY_SIZE(data->seed.bytes), array_size); + rc = TPM_RC_SIZE; + } + } + if (rc == TPM_RC_SUCCESS) { + rc = Array_Unmarshal(&data->seed.bytes[0], array_size, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + if (array_size != ARRAY_SIZE(data->lastValue)) { + TPMLIB_LogTPM2Error("Non-matching DRBG_STATE lastValue array size. " + "Expected %zu, got %u\n", + ARRAY_SIZE(data->lastValue), array_size); + rc = TPM_RC_SIZE; + } + } + if (rc == TPM_RC_SUCCESS) { + for (i = 0; i < ARRAY_SIZE(data->lastValue) && rc == TPM_RC_SUCCESS; i++) { + rc = UINT32_Unmarshal(&data->lastValue[i], buffer, size); + } + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "DRBG_STATE", "version 3 or later"); + /* future versions nest-append here */ + } +skip_future_versions: + + return rc; +} + +#define PCR_POLICY_MAGIC 0x176be626 +#define PCR_POLICY_VERSION 2 +static UINT16 +PCR_POLICY_Marshal(PCR_POLICY *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + unsigned i; + UINT16 array_size = ARRAY_SIZE(data->hashAlg); + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + PCR_POLICY_VERSION, + PCR_POLICY_MAGIC, 1); + + written += UINT16_Marshal(&array_size, buffer, size); + + for (i = 0; i < array_size; i++) { + /* TPMI_ALG_HASH_Unmarshal errors on algid 0 */ + written += TPM_ALG_ID_Marshal(&data->hashAlg[i], buffer, size); + written += TPM2B_DIGEST_Marshal(&data->policy[i], buffer, size); + } + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +PCR_POLICY_Unmarshal(PCR_POLICY *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc= TPM_RC_SUCCESS; + unsigned i; + UINT16 array_size; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + PCR_POLICY_VERSION, PCR_POLICY_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + if (array_size != ARRAY_SIZE(data->hashAlg)) { + TPMLIB_LogTPM2Error("Non-matching PCR_POLICY array size. " + "Expected %zu, got %u\n", + ARRAY_SIZE(data->hashAlg), array_size); + rc = TPM_RC_SIZE; + } + } + + for (i = 0; + rc == TPM_RC_SUCCESS && + i < ARRAY_SIZE(data->hashAlg); + i++) { + /* TPMI_ALG_HASH_Unmarshal errors on algid 0 */ + if (rc == TPM_RC_SUCCESS) { + rc = TPM_ALG_ID_Unmarshal(&data->hashAlg[i], buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_DIGEST_Unmarshal(&data->policy[i], buffer, size); + } + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "PCR_POLICY", "version 3 or later"); + /* future versions nest-append here */ + } +skip_future_versions: + return rc; +} + +#define ORDERLY_DATA_MAGIC 0x56657887 +#define ORDERLY_DATA_VERSION 2 + +static UINT16 +ORDERLY_DATA_Marshal(ORDERLY_DATA *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + BOOL has_block; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + ORDERLY_DATA_VERSION, ORDERLY_DATA_MAGIC, 1); + written += UINT64_Marshal(&data->clock, buffer, size); + written += UINT8_Marshal(&data->clockSafe, buffer, size); + + written += DRBG_STATE_Marshal(&data->drbgState, buffer, size); + +#if ACCUMULATE_SELF_HEAL_TIMER + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if ACCUMULATE_SELF_HEAL_TIMER + written += UINT64_Marshal(&data->selfHealTimer, buffer, size); + written += UINT64_Marshal(&data->lockoutTimer, buffer, size); + written += UINT64_Marshal(&data->time, buffer, size); +#endif // ACCUMULATE_SELF_HEAL_TIMER + + BLOCK_SKIP_WRITE_POP(size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +ORDERLY_DATA_Unmarshal(ORDERLY_DATA *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + BOOL needs_block; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + ORDERLY_DATA_VERSION, ORDERLY_DATA_MAGIC); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->clock, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT8_Unmarshal(&data->clockSafe, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + rc = DRBG_STATE_Unmarshal(&data->drbgState, buffer, size); + } + +#if ACCUMULATE_SELF_HEAL_TIMER + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_self_heal_timer, needs_block, buffer, size, + "ORDERLY_DATA", "selfHealTimer"); + } +#if ACCUMULATE_SELF_HEAL_TIMER + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->selfHealTimer, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->lockoutTimer, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->time, buffer, size); + } +#endif // ACCUMULATE_SELF_HEAL_TIMER +skip_self_heal_timer: + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "ORDERLY_DATA", "version 3 or later"); + /* future versions nest-append here */ + } +skip_future_versions: + + return rc; +} + +#define PCR_SAVE_MAGIC 0x7372eabc +#define PCR_SAVE_VERSION 2 +static UINT16 +PCR_SAVE_Marshal(PCR_SAVE *data, BYTE **buffer, INT32 *size) +{ + UINT16 written = 0; + TPM_ALG_ID algid; + UINT16 array_size; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + PCR_SAVE_VERSION, PCR_SAVE_MAGIC, 1); + + array_size = NUM_STATIC_PCR; + written += UINT16_Marshal(&array_size, buffer, size); + +#if ALG_SHA1 + algid = TPM_ALG_SHA1; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + array_size = sizeof(data->Sha1); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->Sha1, array_size, + buffer, size); +#endif +#if ALG_SHA256 + algid = TPM_ALG_SHA256; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + array_size = sizeof(data->Sha256); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->Sha256, array_size, + buffer, size); +#endif +#if ALG_SHA384 + algid = TPM_ALG_SHA384; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + array_size = sizeof(data->Sha384); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->Sha384, array_size, + buffer, size); +#endif +#if ALG_SHA512 + algid = TPM_ALG_SHA512; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + array_size = sizeof(data->Sha512); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->Sha512, array_size, + buffer, size); +#endif +#if ALG_SM3_256 + algid = TPM_ALG_SM3_256; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + array_size = sizeof(data->Sm3_256); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->Sm3_256, array_size, + buffer, size); +#endif +#if ALG_SHA3_256 || ALG_SHA3_384 || ALG_SHA3_512 || ALG_SM3_256 +#error SHA3 and SM3 are not supported +#endif + + /* end marker */ + algid = TPM_ALG_NULL; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +/* + * Get the PCR banks that are active so that we know what PCRs need to be + * restored. Only data for active PCR banks needs to restored, inactive PCR + * banks need no data restored. + */ +static UINT64 +pcrbanks_algs_active(const TPML_PCR_SELECTION *pcrAllocated) +{ + UINT64 algs_active = 0; + unsigned i, j; + + for(i = 0; i < pcrAllocated->count; i++) { + for (j = 0; j < pcrAllocated->pcrSelections[i].sizeofSelect; j++) { + if (pcrAllocated->pcrSelections[i].pcrSelect[j]) { + algs_active |= 1 << pcrAllocated->pcrSelections[i].hash; + break; + } + } + } + + return algs_active; +} + +static TPM_RC +PCR_SAVE_Unmarshal(PCR_SAVE *data, BYTE **buffer, INT32 *size, + const TPML_PCR_SELECTION *pcrAllocated) +{ + TPM_RC rc = TPM_RC_SUCCESS; + UINT16 array_size, needed_size = 0; + NV_HEADER hdr; + TPM_ALG_ID algid; + BOOL end = FALSE; + BYTE *t = NULL; + UINT64 algs_needed = pcrbanks_algs_active(pcrAllocated); + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + PCR_SAVE_VERSION, PCR_SAVE_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != NUM_STATIC_PCR) { + TPMLIB_LogTPM2Error("Non-matching PCR_SAVE NUM_STATIC_PCR. " + "Expected %zu, got %u\n", + sizeof(NUM_STATIC_PCR), array_size); + rc = TPM_RC_SIZE; + } + + while (rc == TPM_RC_SUCCESS && !end) { + if (rc == TPM_RC_SUCCESS) { + rc = TPM_ALG_ID_Unmarshal(&algid, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + switch (algid) { +#if ALG_SHA1 + case TPM_ALG_SHA1: + needed_size = sizeof(data->Sha1); + t = (BYTE *)&data->Sha1; + break; +#endif +#if ALG_SHA256 + case TPM_ALG_SHA256: + needed_size = sizeof(data->Sha256); + t = (BYTE *)&data->Sha256; + break; +#endif +#if ALG_SHA384 + case TPM_ALG_SHA384: + needed_size = sizeof(data->Sha384); + t = (BYTE *)&data->Sha384; + break; +#endif +#if ALG_SHA512 + case TPM_ALG_SHA512: + needed_size = sizeof(data->Sha512); + t = (BYTE *)&data->Sha512; + break; +#endif +#if ALG_SM3_256 + case TPM_ALG_SM3_256: + needed_size = sizeof(data->Sm3_256); + t = (BYTE *)&data->Sm3_256; + break; +#endif +#if ALG_SHA3_256 || ALG_SHA3_384 || ALG_SHA3_512 || ALG_SM3_256 +#error SHA3 and SM3 are not supported +#endif + case TPM_ALG_NULL: + /* end marker */ + end = TRUE; + t = NULL; + break; + default: + TPMLIB_LogTPM2Error("PCR_SAVE: Unsupported algid %d.", + algid); + rc = TPM_RC_BAD_PARAMETER; + t = NULL; + } + } + if (t) { + if (rc == TPM_RC_SUCCESS) { + algs_needed &= ~(1 << algid); + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && array_size != needed_size) { + TPMLIB_LogTPM2Error("PCR_SAVE: Bad size for PCRs for hash 0x%x; " + "Expected %u, got %d\n", + algid, needed_size, array_size); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = Array_Unmarshal(t, array_size, buffer, size); + } + } + } + + if (rc == TPM_RC_SUCCESS && algs_needed) { + TPMLIB_LogTPM2Error("PCR_SAVE: Missing data for hash algorithm %d.\n", + _ffsll(algs_needed) - 1); + rc = TPM_RC_BAD_PARAMETER; + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "PCR_SAVE", "version 3 or later"); + /* future versions nest-append here */ + } +skip_future_versions: + + return rc; +} + + +#ifdef PCR_C + +#define PCR_MAGIC 0xe95f0387 +#define PCR_VERSION 2 +static UINT16 +PCR_Marshal(PCR *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + TPM_ALG_ID algid; + UINT16 array_size; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + PCR_VERSION, PCR_MAGIC, 1); + +#if ALG_SHA1 + algid = TPM_ALG_SHA1; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + array_size = sizeof(data->Sha1Pcr); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->Sha1Pcr, array_size, + buffer, size); +#endif +#if ALG_SHA256 + algid = TPM_ALG_SHA256; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + array_size = sizeof(data->Sha256Pcr); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->Sha256Pcr, array_size, + buffer, size); +#endif +#if ALG_SHA384 + algid = TPM_ALG_SHA384; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + array_size = sizeof(data->Sha384Pcr); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->Sha384Pcr, array_size, + buffer, size); +#endif +#if ALG_SHA512 + algid = TPM_ALG_SHA512; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + array_size = sizeof(data->Sha512Pcr); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->Sha512Pcr, array_size, + buffer, size); +#endif +#if ALG_SM3_256 + algid = TPM_ALG_SM3_256; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + array_size = sizeof(data->Sm3_256Pcr); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->Sm3_256Pcr, array_size, + buffer, size); +#endif +#if ALG_SHA3_256 || ALG_SHA3_384 || ALG_SHA3_512 || ALG_SM3_256 +#error SHA3 and SM3 are not supported +#endif + + /* end marker */ + algid = TPM_ALG_NULL; + written += TPM_ALG_ID_Marshal(&algid, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +PCR_Unmarshal(PCR *data, BYTE **buffer, INT32 *size, + const TPML_PCR_SELECTION *pcrAllocated) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + BOOL end = FALSE; + BYTE *t = NULL; + UINT16 needed_size = 0, array_size; + TPM_ALG_ID algid; + UINT64 algs_needed = pcrbanks_algs_active(pcrAllocated); + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + PCR_VERSION, PCR_MAGIC); + } + + while (rc == TPM_RC_SUCCESS && !end) { + if (rc == TPM_RC_SUCCESS) { + rc = TPM_ALG_ID_Unmarshal(&algid, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + switch (algid) { +#if ALG_SHA1 + case TPM_ALG_SHA1: + needed_size = sizeof(data->Sha1Pcr); + t = (BYTE *)&data->Sha1Pcr; + break; +#endif +#if ALG_SHA256 + case TPM_ALG_SHA256: + needed_size = sizeof(data->Sha256Pcr); + t = (BYTE *)&data->Sha256Pcr; + break; +#endif +#if ALG_SHA384 + case TPM_ALG_SHA384: + needed_size = sizeof(data->Sha384Pcr); + t = (BYTE *)&data->Sha384Pcr; + break; +#endif +#if ALG_SHA512 + case TPM_ALG_SHA512: + needed_size = sizeof(data->Sha512Pcr); + t = (BYTE *)&data->Sha512Pcr; + break; +#endif +#if ALG_SM3_256 + case TPM_ALG_SM3_256: + needed_size = sizeof(data->Sm3_256Pcr); + t = (BYTE *)&data->Sm3_256Pcr; + break; +#endif +#if ALG_SHA3_256 || ALG_SHA3_384 || ALG_SHA3_512 || ALG_SM3_256 +#error SHA3 and SM3 are not supported +#endif + case TPM_ALG_NULL: + /* end marker */ + end = TRUE; + t = NULL; + break; + default: + TPMLIB_LogTPM2Error("PCR: Unsupported algid %d.", + algid); + rc = TPM_RC_BAD_PARAMETER; + t = NULL; + } + } + if (t) { + if (rc == TPM_RC_SUCCESS) { + algs_needed &= ~(1 << algid); + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && array_size != needed_size) { + TPMLIB_LogTPM2Error("PCR: Bad size for PCR for hash 0x%x; " + "Expected %u, got %d\n", + algid, needed_size, array_size); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = Array_Unmarshal(t, array_size, buffer, size); + } + } + } + + if (rc == TPM_RC_SUCCESS && algs_needed) { + TPMLIB_LogTPM2Error("PCR: Missing data for hash algorithm %d.\n", + _ffsll(algs_needed) - 1); + rc = TPM_RC_BAD_PARAMETER; + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "PCR", "version 3 or later"); + /* future versions nest-append here */ + } +skip_future_versions: + + return rc; +} +#endif + +#define PCR_AUTHVALUE_MAGIC 0x6be82eaf +#define PCR_AUTHVALUE_VERSION 2 +static UINT16 +PCR_AUTHVALUE_Marshal(PCR_AUTHVALUE *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + size_t i; + UINT16 array_size; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + PCR_AUTHVALUE_VERSION, PCR_AUTHVALUE_MAGIC, 1); + + array_size = ARRAY_SIZE(data->auth); + written += UINT16_Marshal(&array_size, buffer, size); + for (i = 0; i < array_size; i++) { + written += TPM2B_DIGEST_Marshal(&data->auth[i], buffer, size); + } + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +PCR_AUTHVALUE_Unmarshal(PCR_AUTHVALUE *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + size_t i; + NV_HEADER hdr; + UINT16 array_size = 0; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + PCR_AUTHVALUE_VERSION, PCR_AUTHVALUE_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != ARRAY_SIZE(data->auth)) { + TPMLIB_LogTPM2Error("PCR_AUTHVALUE: Bad array size for auth; " + "expected %zu, got %u\n", + ARRAY_SIZE(data->auth), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + for (i = 0; i < ARRAY_SIZE(data->auth) && rc == TPM_RC_SUCCESS; i++) { + rc = TPM2B_DIGEST_Unmarshal(&data->auth[i], buffer, size); + } + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "PCR_AUTHVALUE", "version 3 or later"); + /* future versions nest-append here */ + } +skip_future_versions: + + return rc; +} + +#define STATE_CLEAR_DATA_MAGIC 0x98897667 +#define STATE_CLEAR_DATA_VERSION 2 + +static UINT16 +STATE_CLEAR_DATA_Marshal(STATE_CLEAR_DATA *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + STATE_CLEAR_DATA_VERSION, + STATE_CLEAR_DATA_MAGIC, 1); + written += BOOL_Marshal(&data->shEnable, buffer, size); + written += BOOL_Marshal(&data->ehEnable, buffer, size); + written += BOOL_Marshal(&data->phEnableNV, buffer, size); + written += UINT16_Marshal(&data->platformAlg, buffer, size); + written += TPM2B_DIGEST_Marshal(&data->platformPolicy, buffer, size); + written += TPM2B_AUTH_Marshal(&data->platformAuth, buffer, size); + written += PCR_SAVE_Marshal(&data->pcrSave, buffer, size); + written += PCR_AUTHVALUE_Marshal(&data->pcrAuthValues, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +STATE_CLEAR_DATA_Unmarshal(STATE_CLEAR_DATA *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + STATE_CLEAR_DATA_VERSION, + STATE_CLEAR_DATA_MAGIC); + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&data->shEnable, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&data->ehEnable, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&data->phEnableNV, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&data->platformAlg, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_DIGEST_Unmarshal(&data->platformPolicy, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&data->platformAuth, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = PCR_SAVE_Unmarshal(&data->pcrSave, buffer, size, &shadow.pcrAllocated); + } + if (rc == TPM_RC_SUCCESS) { + rc = PCR_AUTHVALUE_Unmarshal(&data->pcrAuthValues, buffer, size); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "STATE_CLEAR_DATA", "version 3 or later"); + /* future versions nest-append here */ + } +skip_future_versions: + + return rc; +} + +#define STATE_RESET_DATA_MAGIC 0x01102332 +#define STATE_RESET_DATA_VERSION 4 + +static TPM_RC +STATE_RESET_DATA_Unmarshal(STATE_RESET_DATA *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + BOOL needs_block; + UINT16 array_size; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + STATE_RESET_DATA_VERSION, + STATE_RESET_DATA_MAGIC); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_PROOF_Unmarshal(&data->nullProof, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_Unmarshal(&data->nullSeed.b, PRIMARY_SEED_SIZE, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->clearCount, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->objectContextID, buffer, size); + } + + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != ARRAY_SIZE(data->contextArray)) { + TPMLIB_LogTPM2Error("STATE_RESET_DATA: Bad array size for contextArray; " + "expected %zu, got %u\n", + ARRAY_SIZE(data->contextArray), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + size_t i; + if (hdr.version <= 3) { + /* version <= 3 was writing an array of UINT8 */ + UINT8 element; + for (i = 0; i < array_size && rc == TPM_RC_SUCCESS; i++) { + rc = UINT8_Unmarshal(&element, buffer, size); + data->contextArray[i] = element; + } + s_ContextSlotMask = 0xff; + } else { + /* version 4 and later an array of UINT16 */ + for (i = 0; i < array_size && rc == TPM_RC_SUCCESS; i++) { + rc = UINT16_Unmarshal(&data->contextArray[i], buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&s_ContextSlotMask, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + if (s_ContextSlotMask != 0xffff && s_ContextSlotMask != 0x00ff) { + TPMLIB_LogTPM2Error("STATE_RESET_DATA: s_ContextSlotMask has bad value: 0x%04x\n", + s_ContextSlotMask); + rc = TPM_RC_BAD_PARAMETER; + } + } + } + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->contextCounter, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_DIGEST_Unmarshal(&data->commandAuditDigest, + buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->restartCount, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->pcrCounter, buffer, size); + } + +#if ALG_ECC + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_alg_ecc, needs_block, buffer, size, + "STATE_RESET_DATA", "commitCounter"); + } +#if ALG_ECC + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->commitCounter, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&data->commitNonce, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != sizeof(data->commitArray)) { + TPMLIB_LogTPM2Error("STATE_RESET_DATA: Bad array size for commitArray; " + "expected %zu, got %u\n", + sizeof(data->commitArray), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = Array_Unmarshal((BYTE *)&data->commitArray, array_size, + buffer, size); + } +#endif +skip_alg_ecc: + + /* default values before conditional block */ + data->nullSeedCompatLevel = SEED_COMPAT_LEVEL_ORIGINAL; + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, hdr.version >= 3, buffer, size, + "STATE_RESET_DATA", "version 3 or later"); + if (rc == TPM_RC_SUCCESS) { + rc = SEED_COMPAT_LEVEL_Unmarshal(&gr.nullSeedCompatLevel, + buffer, size, "nullSeed"); + } + + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "STATE_RESET_DATA", "version 4 or later"); + } + /* future versions nest-append here */ + } + +skip_future_versions: + + return rc; +} + +static UINT16 +STATE_RESET_DATA_Marshal(STATE_RESET_DATA *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + BOOL has_block; + UINT16 array_size; + BLOCK_SKIP_INIT; + size_t i; + + written = NV_HEADER_Marshal(buffer, size, + STATE_RESET_DATA_VERSION, + STATE_RESET_DATA_MAGIC, 4); + written += TPM2B_PROOF_Marshal(&data->nullProof, buffer, size); + written += TPM2B_Marshal(&data->nullSeed.b, sizeof(data->nullSeed.t.buffer), buffer, size); + written += UINT32_Marshal(&data->clearCount, buffer, size); + written += UINT64_Marshal(&data->objectContextID, buffer, size); + + array_size = ARRAY_SIZE(data->contextArray); + written += UINT16_Marshal(&array_size, buffer, size); + for (i = 0; i < array_size; i++) + written += UINT16_Marshal(&data->contextArray[i], buffer, size); + + if (s_ContextSlotMask != 0x00ff && s_ContextSlotMask != 0xffff) { + /* TPM wasn't initialized, so s_ContextSlotMask wasn't set */ + s_ContextSlotMask = 0xffff; + } + written += UINT16_Marshal(&s_ContextSlotMask, buffer, size); + + written += UINT64_Marshal(&data->contextCounter, buffer, size); + written += TPM2B_DIGEST_Marshal(&data->commandAuditDigest, + buffer, size); + written += UINT32_Marshal(&data->restartCount, buffer, size); + written += UINT32_Marshal(&data->pcrCounter, buffer, size); +#if ALG_ECC + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if ALG_ECC + written += UINT64_Marshal(&data->commitCounter, buffer, size); + written += TPM2B_AUTH_Marshal(&data->commitNonce, buffer, size); + + array_size = sizeof(data->commitArray); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->commitArray, array_size, + buffer, size); +#endif + BLOCK_SKIP_WRITE_POP(size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + written += SEED_COMPAT_LEVEL_Marshal(&data->nullSeedCompatLevel, + buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +#define BN_PRIME_T_MAGIC 0x2fe736ab +#define BN_PRIME_T_VERSION 2 +static UINT16 +bn_prime_t_Marshal(bn_prime_t *data, BYTE **buffer, INT32 *size) +{ + UINT16 written, numbytes; + size_t i, idx; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + BN_PRIME_T_VERSION, BN_PRIME_T_MAGIC, 1); + + /* we do not write 'allocated' */ + numbytes = data->size * sizeof(crypt_uword_t); + written += UINT16_Marshal(&numbytes, buffer, size); + + for (i = 0, idx = 0; + i < numbytes; + i += sizeof(crypt_uword_t), idx += 1) { +#if RADIX_BITS == 64 + written += UINT64_Marshal(&data->d[idx], buffer, size); +#elif RADIX_BITS == 32 + written += UINT32_Marshal(&data->d[idx], buffer, size); +#else +#error RADIX_BYTES it no defined +#endif + } + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +bn_prime_t_Unmarshal(bn_prime_t *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + size_t i, idx; + UINT16 numbytes = 0; + UINT32 word; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + BN_PRIME_T_VERSION, + BN_PRIME_T_MAGIC); + } + + data->allocated = ARRAY_SIZE(data->d); + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&numbytes, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + /* coverity: num_bytes is sanitized here! */ + data->size = (numbytes + sizeof(crypt_uword_t) - 1) / sizeof(crypt_word_t); + if (data->size > data->allocated) { + TPMLIB_LogTPM2Error("bn_prime_t: Require size larger %zu than " + "allocated %zu\n", + (size_t)data->size, (size_t)data->allocated); + rc = TPM_RC_SIZE; + data->size = 0; + } + } + + if (rc == TPM_RC_SUCCESS) { + for (i = 0, idx = 0; + i < numbytes && rc == TPM_RC_SUCCESS; + i += sizeof(UINT32), idx += 1) { + rc = UINT32_Unmarshal(&word, buffer, size); +#if RADIX_BITS == 64 + data->d[idx / 2] <<= 32; + data->d[idx / 2] |= word; +#elif RADIX_BITS == 32 + data->d[idx] = word; +#endif + } + } + +#if RADIX_BITS == 64 + if (rc == TPM_RC_SUCCESS) { + if (idx & 1) + data->d[idx / 2] <<= 32; + } +#endif + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "BN_PRIME_T", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + + return rc; +} + +#define PRIVATE_EXPONENT_T_MAGIC 0x854eab2 +#define PRIVATE_EXPONENT_T_VERSION 2 +static UINT16 +privateExponent_t_Marshal(privateExponent_t *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + PRIVATE_EXPONENT_T_VERSION, + PRIVATE_EXPONENT_T_MAGIC, 1); +#if CRT_FORMAT_RSA == NO +#error Missing code +#else + written += bn_prime_t_Marshal(&data->Q, buffer, size); + written += bn_prime_t_Marshal(&data->dP, buffer, size); + written += bn_prime_t_Marshal(&data->dQ, buffer, size); + written += bn_prime_t_Marshal(&data->qInv, buffer, size); +#endif + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +privateExponent_t_Unmarshal(privateExponent_t *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + PRIVATE_EXPONENT_T_VERSION, + PRIVATE_EXPONENT_T_MAGIC); + } + +#if CRT_FORMAT_RSA == NO +#error Missing code +#else + if (rc == TPM_RC_SUCCESS) { + rc = bn_prime_t_Unmarshal(&data->Q, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = bn_prime_t_Unmarshal(&data->dP, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = bn_prime_t_Unmarshal(&data->dQ, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = bn_prime_t_Unmarshal(&data->qInv, buffer, size); + } +#endif + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "PRIVATE_EXPONENT_T", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + + return rc; +} + +static UINT16 +HASH_STATE_TYPE_Marshal(HASH_STATE_TYPE *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + + written = UINT8_Marshal(data, buffer, size); + + return written; +} + +static UINT16 +HASH_STATE_TYPE_Unmarshal(HASH_STATE_TYPE *data, BYTE **buffer, INT32 *size) +{ + return UINT8_Unmarshal(data, buffer, size); +} + +static inline UINT16 +SHA_LONG_Marshal(SHA_LONG *data, BYTE **buffer, INT32 *size) +{ + return UINT32_Marshal(data, buffer, size); +} + +static inline UINT16 +SHA_LONG_Unmarshal(SHA_LONG *data, BYTE **buffer, INT32 *size) +{ + return UINT32_Unmarshal(data, buffer, size); +} + +static inline UINT16 +SHA_LONG64_Marshal(SHA_LONG64 *data, BYTE **buffer, INT32 *size) +{ + assert(sizeof(*data) == 8); + return UINT64_Marshal((UINT64 *)data, buffer, size); +} + +static inline UINT16 +SHA_LONG64_Unmarshal(SHA_LONG64 *data, BYTE **buffer, INT32 *size) +{ + assert(sizeof(*data) == 8); + return UINT64_Unmarshal((UINT64 *)data, buffer, size); +} + +#if ALG_SHA1 + +#define HASH_STATE_SHA1_MAGIC 0x19d46f50 +#define HASH_STATE_SHA1_VERSION 2 + +static UINT16 +tpmHashStateSHA1_Marshal(tpmHashStateSHA1_t *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + UINT16 array_size; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + HASH_STATE_SHA1_VERSION, + HASH_STATE_SHA1_MAGIC,1); + written += SHA_LONG_Marshal(&data->h0, buffer, size); + written += SHA_LONG_Marshal(&data->h1, buffer, size); + written += SHA_LONG_Marshal(&data->h2, buffer, size); + written += SHA_LONG_Marshal(&data->h3, buffer, size); + written += SHA_LONG_Marshal(&data->h4, buffer, size); + written += SHA_LONG_Marshal(&data->Nl, buffer, size); + written += SHA_LONG_Marshal(&data->Nh, buffer, size); + + /* data must be written as array */ + array_size = sizeof(data->data); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->data[0], array_size, + buffer, size); + + written += UINT32_Marshal(&data->num, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static UINT16 +tpmHashStateSHA1_Unmarshal(tpmHashStateSHA1_t *data, BYTE **buffer, INT32 *size) +{ + UINT16 rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + UINT16 array_size; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + HASH_STATE_SHA1_VERSION, + HASH_STATE_SHA1_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG_Unmarshal(&data->h0, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG_Unmarshal(&data->h1, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG_Unmarshal(&data->h2, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG_Unmarshal(&data->h3, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG_Unmarshal(&data->h4, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG_Unmarshal(&data->Nl, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG_Unmarshal(&data->Nh, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != sizeof(data->data)) { + TPMLIB_LogTPM2Error("HASH_STATE_SHA1: Bad array size for data; " + "expected %zu, got %u\n", + sizeof(data->data), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = Array_Unmarshal((BYTE *)&data->data[0], array_size, + buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->num, buffer, size); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "HASH_STATE_SHA1", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + + return rc; +} +#endif + +#if ALG_SHA256 +#define HASH_STATE_SHA256_MAGIC 0x6ea059d0 +#define HASH_STATE_SHA256_VERSION 2 + +static UINT16 +tpmHashStateSHA256_Marshal(tpmHashStateSHA256_t *data, BYTE **buffer, INT32 *size) +{ + UINT16 written = 0; + UINT16 array_size; + size_t i; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + HASH_STATE_SHA256_VERSION, + HASH_STATE_SHA256_MAGIC, 1); + + array_size = ARRAY_SIZE(data->h); + written += UINT16_Marshal(&array_size, buffer, size); + for (i = 0; i < array_size; i++) { + written += SHA_LONG_Marshal(&data->h[i], buffer, size); + } + written += SHA_LONG_Marshal(&data->Nl, buffer, size); + written += SHA_LONG_Marshal(&data->Nh, buffer, size); + + /* data must be written as array */ + array_size = sizeof(data->data); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal((BYTE *)&data->data[0], array_size, + buffer, size); + + written += UINT32_Marshal(&data->num, buffer, size); + written += UINT32_Marshal(&data->md_len, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static UINT16 +tpmHashStateSHA256_Unmarshal(tpmHashStateSHA256_t *data, BYTE **buffer, INT32 *size) +{ + UINT16 rc = TPM_RC_SUCCESS; + size_t i; + UINT16 array_size; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + HASH_STATE_SHA256_VERSION, + HASH_STATE_SHA256_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != ARRAY_SIZE(data->h)) { + TPMLIB_LogTPM2Error("HASH_STATE_SHA256: Bad array size for h; " + "expected %zu, got %u\n", + ARRAY_SIZE(data->h), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + for (i = 0; rc == TPM_RC_SUCCESS && i < array_size; i++) { + rc = SHA_LONG_Unmarshal(&data->h[i], buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG_Unmarshal(&data->Nl, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG_Unmarshal(&data->Nh, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != sizeof(data->data)) { + TPMLIB_LogTPM2Error("HASH_STATE_SHA256: Bad array size for data; " + "expected %zu, got %u\n", + sizeof(data->data), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = Array_Unmarshal((BYTE *)&data->data[0], array_size, + buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->num, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->md_len, buffer, size); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "HASH_STATE_SHA256", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + + return rc; +} +#endif + +#if ALG_SHA384 || ALG_SHA512 + +#define HASH_STATE_SHA384_MAGIC 0x14814b08 +#define HASH_STATE_SHA384_VERSION 2 + +#define HASH_STATE_SHA512_MAGIC 0x269e8ae0 +#define HASH_STATE_SHA512_VERSION 2 + +static UINT16 +tpmHashStateSHA512_Marshal(SHA512_CTX *data, BYTE **buffer, INT32 *size, + UINT16 hashAlg) +{ + UINT16 written = 0; + UINT16 array_size; + size_t i; + BLOCK_SKIP_INIT; + UINT16 version = HASH_STATE_SHA512_VERSION; + UINT32 magic = HASH_STATE_SHA512_MAGIC; + + if (hashAlg == ALG_SHA384_VALUE) { + version = HASH_STATE_SHA384_VERSION; + magic = HASH_STATE_SHA384_MAGIC; + } + + written = NV_HEADER_Marshal(buffer, size, + version, magic, 1); + + array_size = ARRAY_SIZE(data->h); + written += UINT16_Marshal(&array_size, buffer, size); + for (i = 0; i < array_size; i++) { + written += SHA_LONG64_Marshal(&data->h[i], buffer, size); + } + written += SHA_LONG64_Marshal(&data->Nl, buffer, size); + written += SHA_LONG64_Marshal(&data->Nh, buffer, size); + + array_size = sizeof(data->u.p); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal(&data->u.p[0], array_size, buffer, size); + + written += UINT32_Marshal(&data->num, buffer, size); + written += UINT32_Marshal(&data->md_len, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static UINT16 +tpmHashStateSHA512_Unmarshal(SHA512_CTX *data, BYTE **buffer, INT32 *size, + UINT16 hashAlg) +{ + UINT16 rc = TPM_RC_SUCCESS; + size_t i; + UINT16 array_size; + NV_HEADER hdr; + UINT16 version = HASH_STATE_SHA512_VERSION; + UINT32 magic = HASH_STATE_SHA512_MAGIC; + + if (hashAlg == ALG_SHA384_VALUE) { + version = HASH_STATE_SHA384_VERSION; + magic = HASH_STATE_SHA384_MAGIC; + } + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + version, magic); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != ARRAY_SIZE(data->h)) { + TPMLIB_LogTPM2Error("HASH_STATE_SHA512: Bad array size for h; " + "expected %zu, got %u\n", + ARRAY_SIZE(data->h), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + for (i = 0; rc == TPM_RC_SUCCESS && i < array_size; i++) { + rc = SHA_LONG64_Unmarshal(&data->h[i], buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG64_Unmarshal(&data->Nl, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = SHA_LONG64_Unmarshal(&data->Nh, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != sizeof(data->u.p)) { + TPMLIB_LogTPM2Error("HASH_STATE_SHA512: Bad array size for u.p; " + "expected %zu, got %u\n", + sizeof(data->u.p), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = Array_Unmarshal(&data->u.p[0], array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->num, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->md_len, buffer, size); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "HASH_STATE_SHA512", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + + return rc; +} +#endif + +#define ANY_HASH_STATE_MAGIC 0x349d494b +#define ANY_HASH_STATE_VERSION 2 + +static UINT16 +ANY_HASH_STATE_Marshal(ANY_HASH_STATE *data, BYTE **buffer, INT32 *size, + UINT16 hashAlg) +{ + UINT16 written; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + ANY_HASH_STATE_VERSION, + ANY_HASH_STATE_MAGIC, 1); + + switch (hashAlg) { +#if ALG_SHA1 + case ALG_SHA1_VALUE: + written += tpmHashStateSHA1_Marshal(&data->Sha1, buffer, size); + break; +#endif +#if ALG_SHA256 + case ALG_SHA256_VALUE: + written += tpmHashStateSHA256_Marshal(&data->Sha256, buffer, size); + break; +#endif +#if ALG_SHA384 + case ALG_SHA384_VALUE: + written += tpmHashStateSHA512_Marshal(&data->Sha384, buffer, size, + ALG_SHA384_VALUE); + break; +#endif +#if ALG_SHA512 + case ALG_SHA512_VALUE: + written += tpmHashStateSHA512_Marshal(&data->Sha512, buffer, size, + ALG_SHA512_VALUE); + break; +#endif + default: + break; + } + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static UINT16 +ANY_HASH_STATE_Unmarshal(ANY_HASH_STATE *data, BYTE **buffer, INT32 *size, + UINT16 hashAlg) +{ + UINT16 rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + ANY_HASH_STATE_VERSION, + ANY_HASH_STATE_MAGIC); + } + + switch (hashAlg) { +#if ALG_SHA1 + case ALG_SHA1_VALUE: + rc = tpmHashStateSHA1_Unmarshal(&data->Sha1, buffer, size); + break; +#endif +#if ALG_SHA256 + case ALG_SHA256_VALUE: + rc = tpmHashStateSHA256_Unmarshal(&data->Sha256, buffer, size); + break; +#endif +#if ALG_SHA384 + case ALG_SHA384_VALUE: + rc = tpmHashStateSHA512_Unmarshal(&data->Sha384, buffer, size, + ALG_SHA384_VALUE); + break; +#endif +#if ALG_SHA512 + case ALG_SHA512_VALUE: + rc = tpmHashStateSHA512_Unmarshal(&data->Sha512, buffer, size, + ALG_SHA512_VALUE); + break; +#endif + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "ANY_HASH_STATE", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + + return rc; +} + +#define HASH_STATE_MAGIC 0x562878a2 +#define HASH_STATE_VERSION 2 + +static UINT16 +HASH_STATE_Marshal(HASH_STATE *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + HASH_STATE_VERSION, + HASH_STATE_MAGIC, 1); + + written += HASH_STATE_TYPE_Marshal(&data->type, buffer, size); + written += TPM_ALG_ID_Marshal(&data->hashAlg, buffer, size); + /* def does not need to be written */ + written += ANY_HASH_STATE_Marshal(&data->state, buffer, size, data->hashAlg); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static UINT16 +HASH_STATE_Unmarshal(HASH_STATE *data, BYTE **buffer, INT32 *size) +{ + UINT16 rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + HASH_STATE_VERSION, HASH_STATE_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = HASH_STATE_TYPE_Unmarshal(&data->type, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_ALG_ID_Unmarshal(&data->hashAlg, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + data->def = CryptGetHashDef(data->hashAlg); + if (!data->def) { + TPMLIB_LogTPM2Error("Could not get hash function interface for " + "hashAlg 0x%02x\n", data->hashAlg); + rc = TPM_RC_BAD_PARAMETER; + } + } + if (rc == TPM_RC_SUCCESS) { + rc = ANY_HASH_STATE_Unmarshal(&data->state, buffer, size, data->hashAlg); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "HASH_STATE", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + return rc; +} + +static inline UINT16 +TPM2B_HASH_BLOCK_Marshal(TPM2B_HASH_BLOCK *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + + written = TPM2B_Marshal(&data->b, sizeof(data->t.buffer), buffer, size); + + return written; +} + +static inline UINT16 +TPM2B_HASH_BLOCK_Unmarshal(TPM2B_HASH_BLOCK *data, BYTE **buffer, INT32 *size) +{ + UINT16 rc; + + rc = TPM2B_Unmarshal(&data->b, sizeof(data->t.buffer), buffer, size); + + return rc; +} + +static UINT16 +HMAC_STATE_Marshal(HMAC_STATE *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + + written = HASH_STATE_Marshal(&data->hashState, buffer, size); + written += TPM2B_HASH_BLOCK_Marshal(&data->hmacKey, buffer, size); + + return written; +} + +static UINT16 +HMAC_STATE_Unmarshal(HMAC_STATE *data, BYTE **buffer, INT32 *size) +{ + UINT16 rc = TPM_RC_SUCCESS; + + if (rc == TPM_RC_SUCCESS) { + rc = HASH_STATE_Unmarshal(&data->hashState, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_HASH_BLOCK_Unmarshal(&data->hmacKey, buffer, size); + } + + return rc; +} + +#define HASH_OBJECT_MAGIC 0xb874fe38 +#define HASH_OBJECT_VERSION 3 + +static UINT16 +HASH_OBJECT_Marshal(HASH_OBJECT *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + size_t i; + UINT16 array_size; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + HASH_OBJECT_VERSION, HASH_OBJECT_MAGIC, 1); + written += TPMI_ALG_PUBLIC_Marshal(&data->type, buffer, size); + written += TPMI_ALG_HASH_Marshal(&data->nameAlg, buffer, size); + written += TPMA_OBJECT_Marshal(&data->objectAttributes, buffer, size); + written += TPM2B_AUTH_Marshal(&data->auth, buffer, size); + if (data->attributes.hashSeq == SET || + data->attributes.eventSeq == SET /* since v3 */) { + array_size = ARRAY_SIZE(data->state.hashState); + written += UINT16_Marshal(&array_size, buffer, size); + for (i = 0; i < array_size; i++) { + written += HASH_STATE_Marshal(&data->state.hashState[i], buffer, + size); + } + } else if (data->attributes.hmacSeq == SET) { + written += HMAC_STATE_Marshal(&data->state.hmacState, buffer, size); + } + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static UINT16 +HASH_OBJECT_Unmarshal(HASH_OBJECT *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + size_t i; + UINT16 array_size; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + HASH_OBJECT_VERSION, HASH_OBJECT_MAGIC); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPMI_ALG_PUBLIC_Unmarshal(&data->type, buffer, size); + if (rc == TPM_RC_TYPE) + rc = TPM_RC_SUCCESS; + } + if (rc == TPM_RC_SUCCESS) { + rc = TPMI_ALG_HASH_Unmarshal(&data->nameAlg, buffer, size, TRUE); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPMA_OBJECT_Unmarshal(&data->objectAttributes, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&data->auth, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + /* hashSeq was always written correctly; eventSeq only appeared in v3 */ + if (data->attributes.hashSeq == SET || + (data->attributes.eventSeq == SET && hdr.version >= 3)) { + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + if (array_size != ARRAY_SIZE(data->state.hashState)) { + TPMLIB_LogTPM2Error("HASH_OBJECT: Bad array size for state.hashState; " + "expected %zu, got %u\n", + ARRAY_SIZE(data->state.hashState), + array_size); + rc = TPM_RC_SIZE; + } + } + for (i = 0; rc == TPM_RC_SUCCESS && i < array_size; i++) { + rc = HASH_STATE_Unmarshal(&data->state.hashState[i], + buffer, size); + } + } else if (data->attributes.hmacSeq == SET) { + rc = HMAC_STATE_Unmarshal(&data->state.hmacState, buffer, size); + } + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "HASH_OBJECT", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + + return rc; +} + +/* Local version of TPMT_SENSITIVE_Marshal handling public keys that don't have much in TPM_SENSITIVE */ +static UINT16 +NV_TPMT_SENSITIVE_Marshal(TPMT_SENSITIVE *source, BYTE **buffer, INT32 *size) +{ + UINT16 written = 0; + + written += TPM_ALG_ID_Marshal(&source->sensitiveType, buffer, size); + written += TPM2B_AUTH_Marshal(&source->authValue, buffer, size); + written += TPM2B_DIGEST_Marshal(&source->seedValue, buffer, size); + + switch (source->sensitiveType) { + case TPM_ALG_RSA: + case TPM_ALG_ECC: + case TPM_ALG_KEYEDHASH: + case TPM_ALG_SYMCIPHER: + written += TPMU_SENSITIVE_COMPOSITE_Marshal(&source->sensitive, buffer, size, source->sensitiveType); + break; + default: + /* we wrote these but they must have been 0 in this case */ + pAssert(source->authValue.t.size == 0); + pAssert(source->seedValue.t.size == 0); + pAssert(source->sensitiveType == TPM_ALG_ERROR) + /* public keys */ + } + return written; +} + +/* local version of TPM_SENSITIVE_Unmarshal handling public keys that don't have much in TPMT_SENSITVE */ +static TPM_RC +NV_TPMT_SENSITIVE_Unmarshal(TPMT_SENSITIVE *target, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + + if (rc == TPM_RC_SUCCESS) { + /* TPMI_ALG_PUBLIC_Unmarshal would test the sensitiveType; we don't want this */ + rc = TPM_ALG_ID_Unmarshal(&target->sensitiveType, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&target->authValue, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_DIGEST_Unmarshal(&target->seedValue, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + switch (target->sensitiveType) { + case TPM_ALG_RSA: + case TPM_ALG_ECC: + case TPM_ALG_KEYEDHASH: + case TPM_ALG_SYMCIPHER: + rc = TPMU_SENSITIVE_COMPOSITE_Unmarshal(&target->sensitive, buffer, size, target->sensitiveType); + break; + default: + pAssert(target->authValue.t.size == 0); + pAssert(target->seedValue.t.size == 0); + pAssert(target->sensitiveType == TPM_ALG_ERROR) + /* nothing do to do */ + } + } + return rc; +} + +#define OBJECT_MAGIC 0x75be73af +#define OBJECT_VERSION 3 + +static UINT16 +OBJECT_Marshal(OBJECT *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + BOOL has_block; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + OBJECT_VERSION, OBJECT_MAGIC, 3); + + /* + * attributes are written in ANY_OBJECT_Marshal + */ + written += TPMT_PUBLIC_Marshal(&data->publicArea, buffer, size); + written += NV_TPMT_SENSITIVE_Marshal(&data->sensitive, buffer, size); + +#if ALG_RSA + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); +#if ALG_RSA + written += privateExponent_t_Marshal(&data->privateExponent, + buffer, size); +#endif + BLOCK_SKIP_WRITE_POP(size); + + written += TPM2B_NAME_Marshal(&data->qualifiedName, buffer, size); + written += TPM_HANDLE_Marshal(&data->evictHandle, buffer, size); + written += TPM2B_NAME_Marshal(&data->name, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + written += SEED_COMPAT_LEVEL_Marshal(&data->seedCompatLevel, + buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +OBJECT_Unmarshal(OBJECT *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + BOOL needs_block; + + /* + * attributes are read in ANY_OBJECT_Unmarshal + */ + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + OBJECT_VERSION, OBJECT_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = TPMT_PUBLIC_Unmarshal(&data->publicArea, buffer, size, TRUE); + } + if (rc == TPM_RC_SUCCESS) { + rc = NV_TPMT_SENSITIVE_Unmarshal(&data->sensitive, buffer, size); + } + +#if ALG_RSA + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_alg_rsa, needs_block, buffer, size, + "OBJECT", "privateExponent"); + } +#if ALG_RSA + if (rc == TPM_RC_SUCCESS) { + rc = privateExponent_t_Unmarshal(&data->privateExponent, + buffer, size); + } +#endif +skip_alg_rsa: + + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_NAME_Unmarshal(&data->qualifiedName, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_HANDLE_Unmarshal(&data->evictHandle, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_NAME_Unmarshal(&data->name, buffer, size); + } + + /* default values before conditional block */ + data->seedCompatLevel = SEED_COMPAT_LEVEL_ORIGINAL; + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, hdr.version >= 3, buffer, size, + "OBJECT", "version 3 or later"); + if (rc == TPM_RC_SUCCESS) { + rc = SEED_COMPAT_LEVEL_Unmarshal(&data->seedCompatLevel, + buffer, size, + "OBJECT seedCompatLevel"); + } + + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "OBJECT", "version 4 or later"); + } + /* future versions nest-append here */ + } + +skip_future_versions: + return rc; +} + +#define ANY_OBJECT_MAGIC 0xfe9a3974 +#define ANY_OBJECT_VERSION 2 + +UINT16 +ANY_OBJECT_Marshal(OBJECT *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + UINT32 *ptr = (UINT32 *)&data->attributes; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + ANY_OBJECT_VERSION, ANY_OBJECT_MAGIC, 1); + + written += UINT32_Marshal(ptr, buffer, size); + /* the slot must be occupied, otherwise the rest may not be initialized */ + if (data->attributes.occupied) { + if (ObjectIsSequence(data)) + written += HASH_OBJECT_Marshal((HASH_OBJECT *)data, buffer, size); + else + written += OBJECT_Marshal(data, buffer, size); + } + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +TPM_RC +ANY_OBJECT_Unmarshal(OBJECT *data, BYTE **buffer, INT32 *size, BOOL verbose) +{ + TPM_RC rc = TPM_RC_SUCCESS; + UINT32 *ptr = (UINT32 *)&data->attributes; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_UnmarshalVerbose(&hdr, buffer, size, + ANY_OBJECT_VERSION, ANY_OBJECT_MAGIC, + verbose); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(ptr, buffer, size); + } + + if (rc == TPM_RC_SUCCESS && data->attributes.occupied) { + if (ObjectIsSequence(data)) + rc = HASH_OBJECT_Unmarshal((HASH_OBJECT *)data, buffer, size); + else + rc = OBJECT_Unmarshal(data, buffer, size); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "ANY_OBJECT", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + + return rc; +} + +static UINT16 +TPMT_SYM_DEF_Marshal(TPMT_SYM_DEF *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + + written = UINT16_Marshal(&data->algorithm, buffer, size); + written += TPMU_SYM_KEY_BITS_Marshal(&data->keyBits, buffer, size, data->algorithm); + written += TPMU_SYM_MODE_Marshal(&data->mode, buffer, size, data->algorithm); + + return written; +} + +#define SESSION_MAGIC 0x44be9f45 +#define SESSION_VERSION 2 + +static UINT16 +SESSION_Marshal(SESSION *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + UINT8 clocksize; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + SESSION_VERSION, SESSION_MAGIC, 1); + written += UINT32_Marshal((UINT32 *)&data->attributes, buffer, size); + written += UINT32_Marshal(&data->pcrCounter, buffer, size); + written += UINT64_Marshal(&data->startTime, buffer, size); + written += UINT64_Marshal(&data->timeout, buffer, size); + +#if CLOCK_STOPS + clocksize = sizeof(UINT64); + written += UINT8_Marshal(&clocksize, buffer, size); + written += UINT64_Marshal(&data->epoch, buffer, size); +#else + clocksize = sizeof(UINT32); + written += UINT8_Marshal(&clocksize, buffer, size); + written += UINT32_Marshal(&data->epoch, buffer, size); +#endif + + written += UINT32_Marshal(&data->commandCode, buffer, size); + written += UINT16_Marshal(&data->authHashAlg, buffer, size); + written += UINT8_Marshal(&data->commandLocality, buffer, size); + written += TPMT_SYM_DEF_Marshal(&data->symmetric, buffer, size); + written += TPM2B_AUTH_Marshal(&data->sessionKey, buffer, size); + written += TPM2B_NONCE_Marshal(&data->nonceTPM, buffer, size); + // TPM2B_NAME or TPM2B_DIGEST could be used for marshalling + written += TPM2B_NAME_Marshal(&data->u1.boundEntity, buffer, size); + written += TPM2B_DIGEST_Marshal(&data->u2.auditDigest, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +SESSION_Unmarshal(SESSION *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + UINT8 clocksize; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + SESSION_VERSION, SESSION_MAGIC); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal((UINT32 *)&data->attributes, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->pcrCounter, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->startTime, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->timeout, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT8_Unmarshal(&clocksize, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { +#if CLOCK_STOPS + if (clocksize != sizeof(UINT64)) { + TPMLIB_LogTPM2Error("Unexpected clocksize for epoch; " + "Expected %zu, got %u\n", + sizeof(UINT64), clocksize); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->epoch, buffer, size); + } +#else + if (clocksize != sizeof(UINT32)) { + TPMLIB_LogTPM2Error("Unexpected clocksize for epoch; " + "Expected %zu, got %u\n", + sizeof(UINT32), clocksize); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->epoch, buffer, size); + } +#endif + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->commandCode, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&data->authHashAlg, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT8_Unmarshal(&data->commandLocality, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPMT_SYM_DEF_Unmarshal(&data->symmetric, buffer, size, YES); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&data->sessionKey, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_NONCE_Unmarshal(&data->nonceTPM, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_NAME_Unmarshal(&data->u1.boundEntity, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_DIGEST_Unmarshal(&data->u2.auditDigest, buffer, size); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "SESSION", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + return rc; +} + +#define SESSION_SLOT_MAGIC 0x3664aebc +#define SESSION_SLOT_VERSION 2 + +static UINT16 +SESSION_SLOT_Marshal(SESSION_SLOT *data, BYTE **buffer, INT32* size) +{ + UINT16 written; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + SESSION_SLOT_VERSION, + SESSION_SLOT_MAGIC, 1); + + written += BOOL_Marshal(&data->occupied, buffer, size); + if (!data->occupied) + return written; + + written += SESSION_Marshal(&data->session, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +SESSION_SLOT_Unmarshal(SESSION_SLOT *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + SESSION_SLOT_VERSION, SESSION_SLOT_MAGIC); + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&data->occupied, buffer, size); + } + if (!data->occupied) + return rc; + + if (rc == TPM_RC_SUCCESS) { + rc = SESSION_Unmarshal(&data->session, buffer, size); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "SESSION_SLOT", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + return rc; +} + +#define VOLATILE_STATE_VERSION 4 +#define VOLATILE_STATE_MAGIC 0x45637889 + +UINT16 +VolatileState_Marshal(BYTE **buffer, INT32 *size) +{ + UINT16 written; + size_t i; + BOOL tpmEst; + UINT64 tmp_uint64; + UINT32 tmp_uint32; + BOOL has_block; + UINT16 array_size; + BLOCK_SKIP_INIT; + PERSISTENT_DATA pd; + + written = NV_HEADER_Marshal(buffer, size, + VOLATILE_STATE_VERSION, VOLATILE_STATE_MAGIC, + 1); + + /* skip g_rcIndex: these are 'constants' */ + written += TPM_HANDLE_Marshal(&g_exclusiveAuditSession, buffer, size); /* line 423 */ + /* g_time: may not be necessary */ + written += UINT64_Marshal(&g_time, buffer, size); /* line 426 */ + /* g_timeEpoch: skipped so far -- needs investigation */ + /* g_phEnable: since we won't call TPM2_Starup, we need to write it */ + written += BOOL_Marshal(&g_phEnable, buffer, size); /* line 439 */ + /* g_pcrReconfig: must write */ + written += BOOL_Marshal(&g_pcrReConfig, buffer, size); /* line 443 */ + /* g_DRTMHandle: must write */ + written += TPM_HANDLE_Marshal(&g_DRTMHandle, buffer, size); /* line 448 */ + /* g_DrtmPreStartup: must write */ + written += BOOL_Marshal(&g_DrtmPreStartup, buffer, size); /* line 453 */ + /* g_StartupLocality3: must write */ + written += BOOL_Marshal(&g_StartupLocality3, buffer, size); /* line 458 */ + +#if USE_DA_USED + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if USE_DA_USED + /* g_daUsed: must write */ + written += BOOL_Marshal(&g_daUsed, buffer, size); /* line 484 */ +#endif + BLOCK_SKIP_WRITE_POP(size); + + /* g_updateNV: can skip since it seems to only be valid during execution of a command*/ + /* g_powerWasLost: must write */ + written += BOOL_Marshal(&g_powerWasLost, buffer, size); /* line 504 */ + /* g_clearOrderly: can skip since it seems to only be valid during execution of a command */ + /* g_prevOrderlyState: must write */ + written += UINT16_Marshal(&g_prevOrderlyState, buffer, size); /* line 516 */ + /* g_nvOk: must write */ + written += BOOL_Marshal(&g_nvOk, buffer, size); /* line 522 */ + /* g_NvStatus: can skip since it seems to only be valid during execution of a command */ + +#if 0 /* does not exist */ + written += TPM2B_AUTH_Marshal(&g_platformUniqueAuthorities, buffer, size); /* line 535 */ +#endif + written += TPM2B_AUTH_Marshal(&g_platformUniqueDetails, buffer, size); /* line 536 */ + + /* gp (persistent_data): skip; we assume its latest states in the persistent data file */ + + /* we store the next 3 because they may not have been written to NVRAM */ + written += ORDERLY_DATA_Marshal(&go, buffer, size); /* line 707 */ + written += STATE_CLEAR_DATA_Marshal(&gc, buffer, size); /* line 738 */ + written += STATE_RESET_DATA_Marshal(&gr, buffer, size); /* line 826 */ + + /* g_manufactured: must write */ + written += BOOL_Marshal(&g_manufactured, buffer, size); /* line 928 */ + /* g_initialized: must write */ + written += BOOL_Marshal(&g_initialized, buffer, size); /* line 932 */ + +#if defined SESSION_PROCESS_C || defined GLOBAL_C || defined MANUFACTURE_C + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if defined SESSION_PROCESS_C || defined GLOBAL_C || defined MANUFACTURE_C + /* + * The session related variables may only be valid during the execution + * of a single command; safer to store + */ + array_size = ARRAY_SIZE(s_sessionHandles); + written += UINT16_Marshal(&array_size, buffer, size); + + for (i = 0; i < array_size; i++) { + written += TPM_HANDLE_Marshal(&s_sessionHandles[i], buffer, size); + written += TPMA_SESSION_Marshal(&s_attributes[i], buffer, size); + written += TPM_HANDLE_Marshal(&s_associatedHandles[i], buffer, size); + written += TPM2B_NONCE_Marshal(&s_nonceCaller[i], buffer, size); + written += TPM2B_AUTH_Marshal(&s_inputAuthValues[i], buffer, size); + /* s_usedSessions: cannot serialize this since it is a pointer; also, isn't used */ + } + written += TPM_HANDLE_Marshal(&s_encryptSessionIndex, buffer, size); + written += TPM_HANDLE_Marshal(&s_decryptSessionIndex, buffer, size); + written += TPM_HANDLE_Marshal(&s_auditSessionIndex, buffer, size); + +#if CC_GetCommandAuditDigest + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if CC_GetCommandAuditDigest + /* s_cpHashForCommandAudit: seems not used; better to write it */ + written += TPM2B_DIGEST_Marshal(&s_cpHashForCommandAudit, buffer, size); +#endif + BLOCK_SKIP_WRITE_POP(size); + + /* s_DAPendingOnNV: needs investigation ... */ + written += BOOL_Marshal(&s_DAPendingOnNV, buffer, size); +#endif // SESSION_PROCESS_C + BLOCK_SKIP_WRITE_POP(size); + +#if defined DA_C || defined GLOBAL_C || defined MANUFACTURE_C + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if defined DA_C || defined GLOBAL_C || defined MANUFACTURE_C + +#if !ACCUMULATE_SELF_HEAL_TIMER + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if !ACCUMULATE_SELF_HEAL_TIMER + written += UINT64_Marshal(&s_selfHealTimer, buffer, size); /* line 975 */ + written += UINT64_Marshal(&s_lockoutTimer, buffer, size); /* line 977 */ +#endif // ACCUMULATE_SELF_HEAL_TIMER + BLOCK_SKIP_WRITE_POP(size); +#endif // DA_C + BLOCK_SKIP_WRITE_POP(size); + +#if defined NV_C || defined GLOBAL_C + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + /* s_evictNvEnd set in NvInitStatic called by NvPowerOn in case g_powerWasLost + * Unless we set g_powerWasLost=TRUE and call NvPowerOn, we have to include it. + */ +#if defined NV_C || defined GLOBAL_C + written += UINT32_Marshal(&s_evictNvEnd, buffer, size); /* line 984 */ + /* s_indexOrderlyRam read from NVRAM in NvEntityStartup and written to it + * in NvUpdateIndexOrderlyData called by TPM2_Shutdown and initialized + * in NvManufacture -- since we don't call TPM2_Shutdown we serialize it here + */ + array_size = sizeof(s_indexOrderlyRam); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal(s_indexOrderlyRam, array_size, buffer, size); + + written += UINT64_Marshal(&s_maxCounter, buffer, size); /* line 992 */ + /* the following need not be written; NvIndexCacheInit initializes them partly + * and NvIndexCacheInit() is called during ExecuteCommand() + * - s_cachedNvIndex + * - s_cachedNvRef + * - s_cachedNvRamRef + */ +#endif + BLOCK_SKIP_WRITE_POP(size); + +#if defined OBJECT_C || defined GLOBAL_C + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if defined OBJECT_C || defined GLOBAL_C + /* used in many places; it doesn't look like TPM2_Shutdown writes this into + * persistent memory, so what is lost upon TPM2_Shutdown? + */ + array_size = ARRAY_SIZE(s_objects); + written += UINT16_Marshal(&array_size, buffer, size); + + for (i = 0; i < array_size; i++) { + written += ANY_OBJECT_Marshal(&s_objects[i], buffer, size); + } +#endif + BLOCK_SKIP_WRITE_POP(size); + +#if defined PCR_C || defined GLOBAL_C + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if defined PCR_C || defined GLOBAL_C + /* s_pcrs: Marshal *all* PCRs, even those for which stateSave bit is not set */ + array_size = ARRAY_SIZE(s_pcrs); + written += UINT16_Marshal(&array_size, buffer, size); + + for (i = 0; i < array_size; i++) { + written += PCR_Marshal(&s_pcrs[i], buffer, size); + } +#endif + BLOCK_SKIP_WRITE_POP(size); + +#if defined SESSION_C || defined GLOBAL_C + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if defined SESSION_C || defined GLOBAL_C + /* s_sessions: */ + array_size = ARRAY_SIZE(s_sessions); + written += UINT16_Marshal(&array_size, buffer, size); + + for (i = 0; i < array_size; i++) { + written += SESSION_SLOT_Marshal(&s_sessions[i], buffer, size); + } + /* s_oldestSavedSession: */ + written += UINT32_Marshal(&s_oldestSavedSession, buffer, size); + /* s_freeSessionSlots: */ + written += UINT32_Marshal((UINT32 *)&s_freeSessionSlots, buffer, size); +#endif + BLOCK_SKIP_WRITE_POP(size); + +#if defined IO_BUFFER_C || defined GLOBAL_C + /* s_actionInputBuffer: skip; only used during a single command */ + /* s_actionOutputBuffer: skip; only used during a single command */ +#endif + written += BOOL_Marshal(&g_inFailureMode, buffer, size); /* line 1078 */ + + /* TPM established bit */ + tpmEst = _rpc__Signal_GetTPMEstablished(); + written += BOOL_Marshal(&tpmEst, buffer, size); + +#if defined TPM_FAIL_C || defined GLOBAL_C || 1 + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if defined TPM_FAIL_C || defined GLOBAL_C || 1 + written += UINT32_Marshal(&s_failFunction, buffer, size); + written += UINT32_Marshal(&s_failLine, buffer, size); + written += UINT32_Marshal(&s_failCode, buffer, size); +#endif // TPM_FAIL_C + BLOCK_SKIP_WRITE_POP(size); + +#ifndef HARDWARE_CLOCK + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#ifndef HARDWARE_CLOCK + tmp_uint64 = s_realTimePrevious; + written += UINT64_Marshal(&tmp_uint64, buffer, size); + tmp_uint64 = s_tpmTime; + written += UINT64_Marshal(&tmp_uint64, buffer, size); +#endif + BLOCK_SKIP_WRITE_POP(size); + + written += BOOL_Marshal(&s_timerReset, buffer, size); + written += BOOL_Marshal(&s_timerStopped, buffer, size); + written += UINT32_Marshal(&s_adjustRate, buffer, size); + + tmp_uint64 = ClockGetTime(CLOCK_REALTIME); + written += UINT64_Marshal(&tmp_uint64, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); /* v3 */ + + /* tie the volatile state to the EP,SP, and PPSeed */ + NvRead(&pd, NV_PERSISTENT_DATA, sizeof(pd)); + written += TPM2B_Marshal(&pd.EPSeed.b, sizeof(pd.EPSeed.t.buffer), buffer, size); + written += TPM2B_Marshal(&pd.SPSeed.b, sizeof(pd.SPSeed.t.buffer), buffer, size); + written += TPM2B_Marshal(&pd.PPSeed.b, sizeof(pd.PPSeed.t.buffer), buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); /* v4 */ + + tmp_uint64 = ClockGetTime(CLOCK_MONOTONIC) + s_hostMonotonicAdjustTime; + written += UINT64_Marshal(&tmp_uint64, buffer, size); + + written += UINT64_Marshal(&s_suspendedElapsedTime, buffer, size); + written += UINT64_Marshal(&s_lastSystemTime, buffer, size); + written += UINT64_Marshal(&s_lastReportedTime, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); /* v5 */ + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); /* v5 */ + BLOCK_SKIP_WRITE_POP(size); /* v4 */ + BLOCK_SKIP_WRITE_POP(size); /* v3 */ + + /* keep marker at end */ + tmp_uint32 = VOLATILE_STATE_MAGIC; + written += UINT32_Marshal(&tmp_uint32, buffer, size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +VolatileState_TailV4_Unmarshal(BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + UINT64 tmp_uint64; + + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&tmp_uint64, buffer, size); + s_hostMonotonicAdjustTime = tmp_uint64 - ClockGetTime(CLOCK_MONOTONIC); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&s_suspendedElapsedTime, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&s_lastSystemTime, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&s_lastReportedTime, buffer, size); + } + + return rc; +} + +static TPM_RC +VolatileState_TailV3_Unmarshal(BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + PERSISTENT_DATA pd; + TPM2B_SEED seed = { + .b.size = 0, + }; + + NvRead(&pd, NV_PERSISTENT_DATA, sizeof(pd)); + + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_Unmarshal(&seed.b, PRIMARY_SEED_SIZE, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + if (seed.b.size > PRIMARY_SEED_SIZE) /* coverity */ + rc = TPM_RC_SIZE; + } + if (rc == TPM_RC_SUCCESS) { + if (TPM2B_Cmp(&seed.b, &pd.EPSeed.b)) { + TPMLIB_LogTPM2Error("%s: EPSeed does not match\n", + __func__); + rc = TPM_RC_VALUE; + } + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_Unmarshal(&seed.b, PRIMARY_SEED_SIZE, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + if (seed.b.size > PRIMARY_SEED_SIZE) /* coverity */ + rc = TPM_RC_SIZE; + } + if (rc == TPM_RC_SUCCESS) { + if (TPM2B_Cmp(&seed.b, &pd.SPSeed.b)) { + TPMLIB_LogTPM2Error("%s: SPSeed does not match\n", + __func__); + rc = TPM_RC_VALUE; + } + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_Unmarshal(&seed.b, PRIMARY_SEED_SIZE, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + if (seed.b.size > PRIMARY_SEED_SIZE) /* coverity */ + rc = TPM_RC_SIZE; + } + if (rc == TPM_RC_SUCCESS) { + if (TPM2B_Cmp(&seed.b, &pd.PPSeed.b)) { + TPMLIB_LogTPM2Error("%s: PPSeed does not match\n", + __func__); + rc = TPM_RC_VALUE; + } + } + + return rc; +} + +TPM_RC +VolatileState_Unmarshal(BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + size_t i; + UINT64 tmp_uint64; + UINT32 tmp_uint32; + NV_HEADER hdr; + BOOL needs_block; + UINT16 array_size = 0; + UINT64 backthen; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + VOLATILE_STATE_VERSION, VOLATILE_STATE_MAGIC); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_HANDLE_Unmarshal(&g_exclusiveAuditSession, buffer, size); /* line 423 */ + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&g_time, buffer, size); /* line 426 */ + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&g_phEnable, buffer, size); /* line 439 */ + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&g_pcrReConfig, buffer, size); /* line 443 */ + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_HANDLE_Unmarshal(&g_DRTMHandle, buffer, size); /* line 448 */ + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&g_DrtmPreStartup, buffer, size); /* line 453 */ + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&g_StartupLocality3, buffer, size); /* line 458 */ + } + +#if USE_DA_USED + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_da, needs_block, buffer, size, + "Volatile state", "g_daUsed"); + } +#if USE_DA_USED + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&g_daUsed, buffer, size); /* line 484 */ + } +#endif +skip_da: + + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&g_powerWasLost, buffer, size); /* line 504 */ + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&g_prevOrderlyState, buffer, size); /* line 516 */ + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&g_nvOk, buffer, size); /* line 522 */ + } +#if 0 /* does not exist */ + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&g_platformUniqueAuthorities, buffer, size); /* line 535 */ + } +#endif + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&g_platformUniqueDetails, buffer, size); /* line 536 */ + } + + if (rc == TPM_RC_SUCCESS) { + rc = ORDERLY_DATA_Unmarshal(&go, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = STATE_CLEAR_DATA_Unmarshal(&gc, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = STATE_RESET_DATA_Unmarshal(&gr, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&g_manufactured, buffer, size); /* line 928 */ + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&g_initialized, buffer, size); /* line 932 */ + } + +#if defined SESSION_PROCESS_C || defined GLOBAL_C || defined MANUFACTURE_C + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_session_process, needs_block, buffer, size, + "Volatile state", "s_sessionHandles"); + } +#if defined SESSION_PROCESS_C || defined GLOBAL_C || defined MANUFACTURE_C + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != ARRAY_SIZE(s_sessionHandles)) { + TPMLIB_LogTPM2Error("Volatile state: Bad array size for s_sessionHandles; " + "expected %zu, got %u\n", + ARRAY_SIZE(s_sessionHandles), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + for (i = 0; i < array_size && rc == TPM_RC_SUCCESS; i++) { + if (rc == TPM_RC_SUCCESS) { + rc = TPM_HANDLE_Unmarshal(&s_sessionHandles[i], buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPMA_SESSION_Unmarshal(&s_attributes[i], buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_HANDLE_Unmarshal(&s_associatedHandles[i], buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_NONCE_Unmarshal(&s_nonceCaller[i], buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&s_inputAuthValues[i], buffer, size); + } + } + + if (rc == TPM_RC_SUCCESS) { + rc = TPM_HANDLE_Unmarshal(&s_encryptSessionIndex, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_HANDLE_Unmarshal(&s_decryptSessionIndex, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_HANDLE_Unmarshal(&s_auditSessionIndex, buffer, size); + } + +#if CC_GetCommandAuditDigest + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_cc_getcommandauditdigest, needs_block, buffer, size, + "Volatile state", "s_cpHashForCommandAudit"); + } +#if CC_GetCommandAuditDigest + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_DIGEST_Unmarshal(&s_cpHashForCommandAudit, buffer, size); + } +#endif +skip_cc_getcommandauditdigest: + + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&s_DAPendingOnNV, buffer, size); + } +#endif /* SESSION_PROCESS_C */ +skip_session_process: + +#if defined DA_C || defined GLOBAL_C || defined MANUFACTURE_C + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_accumulate_self_heal_timer_1, needs_block, buffer, size, + "Volatile state", "s_selfHealTimer.1"); + } + +#if defined DA_C || defined GLOBAL_C || defined MANUFACTURE_C +#if !ACCUMULATE_SELF_HEAL_TIMER + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_accumulate_self_heal_timer_2, needs_block, buffer, size, + "Volatile state", "s_selfHealTimer.2"); + } +#if !ACCUMULATE_SELF_HEAL_TIMER + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&s_selfHealTimer, buffer, size); /* line 975 */ + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&s_lockoutTimer, buffer, size); /* line 977 */ + } +#endif +skip_accumulate_self_heal_timer_2: +#endif +skip_accumulate_self_heal_timer_1: + +#if defined NV_C || defined GLOBAL_C + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_nv, needs_block, buffer, size, + "Volatile state", "s_evictNvEnd"); + } + +#if defined NV_C || defined GLOBAL_C + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&s_evictNvEnd, buffer, size); /* line 984 */ + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != ARRAY_SIZE(s_indexOrderlyRam)) { + TPMLIB_LogTPM2Error("Volatile state: Bad array size for s_indexOrderlyRam; " + "expected %zu, got %u\n", + ARRAY_SIZE(s_indexOrderlyRam), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = Array_Unmarshal(s_indexOrderlyRam, array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&s_maxCounter, buffer, size); /* line 992 */ + } + /* The following are not included: + * - s_cachedNvIndex + * - s_cachedNvRef + * - s_cachedNvRamRef + */ +#endif +skip_nv: + +#if defined OBJECT_C || defined GLOBAL_C + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_object, needs_block, buffer, size, + "Volatile state", "s_objects"); + } +#if defined OBJECT_C || defined GLOBAL_C + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != ARRAY_SIZE(s_objects)) { + TPMLIB_LogTPM2Error("Volatile state: Bad array size for s_objects; " + "expected %zu, got %u\n", + ARRAY_SIZE(s_objects), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + for (i = 0; i < array_size && rc == TPM_RC_SUCCESS; i++) { + rc = ANY_OBJECT_Unmarshal(&s_objects[i], buffer, size, true); + } +#endif +skip_object: + +#if defined PCR_C || defined GLOBAL_C + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_pcr, needs_block, buffer, size, + "Volatile state", "s_pcrs"); + } +#if defined PCR_C || defined GLOBAL_C + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != ARRAY_SIZE(s_pcrs)) { + TPMLIB_LogTPM2Error("Volatile state: Bad array size for s_pcrs; " + "expected %zu, got %u\n", + ARRAY_SIZE(s_pcrs), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + for (i = 0; i < array_size && rc == TPM_RC_SUCCESS; i++) { + rc = PCR_Unmarshal(&s_pcrs[i], buffer, size, &shadow.pcrAllocated); + } +#endif +skip_pcr: + +#if defined SESSION_C || defined GLOBAL_C + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_session, needs_block, buffer, size, + "Volatile state", "s_sessions"); + } +#if defined SESSION_C || defined GLOBAL_C + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS && + array_size != ARRAY_SIZE(s_sessions)) { + TPMLIB_LogTPM2Error("Volatile state: Bad array size for s_sessions; " + "expected %zu, got %u\n", + ARRAY_SIZE(s_sessions), array_size); + rc = TPM_RC_BAD_PARAMETER; + } + /* s_sessions: */ + for (i = 0; i < array_size && rc == TPM_RC_SUCCESS; i++) { + rc = SESSION_SLOT_Unmarshal(&s_sessions[i], buffer, size); + } + /* s_oldestSavedSession: */ + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&s_oldestSavedSession, buffer, size); + } + /* s_freeSessionSlots: */ + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal((UINT32 *)&s_freeSessionSlots, buffer, size); + } +#endif +skip_session: + + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&g_inFailureMode, buffer, size); /* line 1078 */ + } + + /* TPM established bit */ + if (rc == TPM_RC_SUCCESS) { + BOOL tpmEst; + rc = BOOL_Unmarshal(&tpmEst, buffer, size); + if (rc == TPM_RC_SUCCESS) { + if (tpmEst) + _rpc__Signal_SetTPMEstablished(); + else + _rpc__Signal_ResetTPMEstablished(); + } + } + +#if defined TPM_FAIL_C || defined GLOBAL_C || 1 + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_fail, needs_block, buffer, size, + "Volatile state", "s_failFunction"); + } + +#if defined TPM_FAIL_C || defined GLOBAL_C || 1 + /* appended in v2 */ + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&s_failFunction, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&s_failLine, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&s_failCode, buffer, size); + } +#endif +skip_fail: + +#ifndef HARDWARE_CLOCK + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_hardware_clock, needs_block, buffer, size, + "Volatile state", "s_realTimePrevious"); + } + +#ifndef HARDWARE_CLOCK + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&tmp_uint64, buffer, size); + s_realTimePrevious = tmp_uint64; + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&tmp_uint64, buffer, size); + s_tpmTime = tmp_uint64; + } +#endif +skip_hardware_clock: + + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&s_timerReset, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&s_timerStopped, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&s_adjustRate, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&backthen, buffer, size); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, hdr.version >= 3, buffer, size, + "Volatile State", "version 3 or later"); + if (rc == TPM_RC_SUCCESS) { + rc = VolatileState_TailV3_Unmarshal(buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_future_versions, hdr.version >= 4, buffer, size, + "Volatile State", "version 4 or later"); + } + if (rc == TPM_RC_SUCCESS) { + rc = VolatileState_TailV4_Unmarshal(buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "Volatile State", "version 5 or later"); + } + /* future versions append here */ + } + +skip_future_versions: + + /* keep marker at end: */ + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&tmp_uint32, buffer, size); + if (rc == TPM_RC_SUCCESS) { + if (tmp_uint32 != VOLATILE_STATE_MAGIC) { + TPMLIB_LogTPM2Error("Invalid volatile state magic. " + "Expected 0x%08x, got 0x%08x\n", + VOLATILE_STATE_MAGIC, tmp_uint32); + rc = TPM_RC_BAD_TAG; + } + } + } + + if (rc == TPM_RC_SUCCESS) { + BOOL timesAreRealtime = hdr.version <= 3; + /* Before Rev148 (header version <= 3), times were reported in + realtime; we need to account for this now */ + ClockAdjustPostResume(backthen, timesAreRealtime); + } + return rc; +} + +/******************************************************************** + * The following is a list of compile-time constants that we verify against + * when state is presented to us. Comparison operators allow us to verify + * compile time constants' values against what we would accept when reading + * state. So for example a value of 1024 for a buffer size that is read can + * be compared against the value that this implementation has been compiled + * with. In some case a 'less or equal' [LE] (1024 < 2048) may be acceptable + * but that depends on the purpose of the compile time constant. The most + * conservative approach is to force that the unmarshalled values are equal + * [EQ] to the ones of this implementation. + * + * Meanings of comparison operators: + * EQ: The read state must match the state the implementation would produce + * The algorithm must have been enabled at the previously implementation + * and at the current implementation; or it must have been disabled at + * both + * + * LE: The read state may have been written by a version that did not + * implement an algorithm ('0') but the current implementation does + * implement it ('1'); this does NOT allow an implementation to accept + * the state anymore if the state was written by an implementation that + * implemented it ('1') but the current implementation does not im- + * plement it + * + * DONTCARE: Implementation that wrote the state can either have implemented + * an algorithm or not and implementation reading the state may + * also either implement it or not + */ +static const struct _entry { + UINT32 constant; + char *name; + enum CompareOp { EQ, LE, GE, DONTCARE } cmp; +} pa_compile_constants[] = { +#define COMPILE_CONSTANT(CONST, CMP) \ + .constant = CONST, .name = #CONST, .cmp = CMP + { COMPILE_CONSTANT(ALG_RSA, EQ) }, + { COMPILE_CONSTANT(ALG_SHA1, EQ) }, + { COMPILE_CONSTANT(ALG_HMAC, EQ) }, + { COMPILE_CONSTANT(ALG_TDES, LE) }, + { COMPILE_CONSTANT(ALG_AES, EQ) }, + { COMPILE_CONSTANT(ALG_MGF1, EQ) }, + { COMPILE_CONSTANT(ALG_XOR, EQ) }, + { COMPILE_CONSTANT(ALG_KEYEDHASH, EQ) }, + { COMPILE_CONSTANT(ALG_SHA256, EQ) }, + { COMPILE_CONSTANT(ALG_SHA384, EQ) }, + { COMPILE_CONSTANT(ALG_SHA512, EQ) }, + { COMPILE_CONSTANT(ALG_SM3_256, EQ) }, + { COMPILE_CONSTANT(ALG_SM4, EQ) }, + { COMPILE_CONSTANT(ALG_RSASSA, EQ) }, + { COMPILE_CONSTANT(ALG_RSAES, EQ) }, + { COMPILE_CONSTANT(ALG_RSAPSS, EQ) }, + { COMPILE_CONSTANT(ALG_OAEP, EQ) }, + { COMPILE_CONSTANT(ALG_ECC, EQ) }, + { COMPILE_CONSTANT(ALG_ECDH, EQ) }, + { COMPILE_CONSTANT(ALG_ECDSA, EQ) }, + { COMPILE_CONSTANT(ALG_ECDAA, EQ) }, + { COMPILE_CONSTANT(ALG_SM2, LE) }, + { COMPILE_CONSTANT(ALG_ECSCHNORR, EQ) }, + { COMPILE_CONSTANT(ALG_ECMQV, LE) }, + { COMPILE_CONSTANT(ALG_SYMCIPHER, EQ) }, + { COMPILE_CONSTANT(ALG_KDF1_SP800_56A, EQ) }, + { COMPILE_CONSTANT(ALG_KDF2, LE) }, + { COMPILE_CONSTANT(ALG_KDF1_SP800_108, EQ) }, + { COMPILE_CONSTANT(ALG_CMAC, LE) }, + { COMPILE_CONSTANT(ALG_CTR, EQ) }, + { COMPILE_CONSTANT(ALG_OFB, EQ) }, + { COMPILE_CONSTANT(ALG_CBC, EQ) }, + { COMPILE_CONSTANT(ALG_CFB, EQ) }, + { COMPILE_CONSTANT(ALG_ECB, EQ) }, + { COMPILE_CONSTANT(MAX_RSA_KEY_BITS, LE) }, /* old: 2048 */ + { COMPILE_CONSTANT(MAX_TDES_KEY_BITS, EQ) }, + { COMPILE_CONSTANT(MAX_AES_KEY_BITS, EQ) }, + { COMPILE_CONSTANT(128, EQ) }, /* MAX_SM4_KEY_BITS in older code was 128 also with SM4 not active */ + { COMPILE_CONSTANT(128, EQ) }, /* MAX_CAMELLIA_KEY_BITS in older code was 128 also with CAMELLIA not active */ + { COMPILE_CONSTANT(ECC_NIST_P192, LE) }, + { COMPILE_CONSTANT(ECC_NIST_P224, LE) }, + { COMPILE_CONSTANT(ECC_NIST_P256, LE) }, + { COMPILE_CONSTANT(ECC_NIST_P384, LE) }, + { COMPILE_CONSTANT(ECC_NIST_P521, LE) }, + { COMPILE_CONSTANT(ECC_BN_P256, LE) }, + { COMPILE_CONSTANT(ECC_BN_P638, LE) }, + { COMPILE_CONSTANT(ECC_SM2_P256, LE) }, + { COMPILE_CONSTANT(MAX_ECC_KEY_BITS, LE) }, + { COMPILE_CONSTANT(4, EQ) }, /* was: HASH_ALIGNMENT, which is not relevant */ + { COMPILE_CONSTANT(SYM_ALIGNMENT, EQ) }, + { COMPILE_CONSTANT(IMPLEMENTATION_PCR, EQ) }, + { COMPILE_CONSTANT(PLATFORM_PCR, EQ) }, + { COMPILE_CONSTANT(DRTM_PCR, EQ) }, + { COMPILE_CONSTANT(HCRTM_PCR, EQ) }, + { COMPILE_CONSTANT(NUM_LOCALITIES, EQ) }, + { COMPILE_CONSTANT(MAX_HANDLE_NUM, EQ) }, + { COMPILE_CONSTANT(MAX_ACTIVE_SESSIONS, EQ) }, + { COMPILE_CONSTANT(MAX_LOADED_SESSIONS, EQ) }, + { COMPILE_CONSTANT(MAX_SESSION_NUM, EQ) }, + { COMPILE_CONSTANT(MAX_LOADED_OBJECTS, EQ) }, + { COMPILE_CONSTANT(MIN_EVICT_OBJECTS, LE) }, + { COMPILE_CONSTANT(NUM_POLICY_PCR_GROUP, EQ) }, + { COMPILE_CONSTANT(NUM_AUTHVALUE_PCR_GROUP, EQ) }, + { COMPILE_CONSTANT(MAX_CONTEXT_SIZE, LE) }, /* old: 2474 */ + { COMPILE_CONSTANT(MAX_DIGEST_BUFFER, EQ) }, + { COMPILE_CONSTANT(MAX_NV_INDEX_SIZE, EQ) }, + { COMPILE_CONSTANT(MAX_NV_BUFFER_SIZE, EQ) }, + { COMPILE_CONSTANT(MAX_CAP_BUFFER, EQ) }, + { COMPILE_CONSTANT(NV_MEMORY_SIZE, LE) }, + { COMPILE_CONSTANT(MIN_COUNTER_INDICES, EQ) }, + { COMPILE_CONSTANT(NUM_STATIC_PCR, EQ) }, + { COMPILE_CONSTANT(MAX_ALG_LIST_SIZE, EQ) }, + { COMPILE_CONSTANT(PRIMARY_SEED_SIZE, EQ) }, +#if CONTEXT_ENCRYPT_ALGORITHM == AES +#define CONTEXT_ENCRYPT_ALGORITHM_ TPM_ALG_AES +#endif + { COMPILE_CONSTANT(CONTEXT_ENCRYPT_ALGORITHM_, EQ) }, + { COMPILE_CONSTANT(NV_CLOCK_UPDATE_INTERVAL, EQ) }, + { COMPILE_CONSTANT(NUM_POLICY_PCR, EQ) }, + { COMPILE_CONSTANT(ORDERLY_BITS, EQ) }, + { COMPILE_CONSTANT(MAX_SYM_DATA, EQ) }, + { COMPILE_CONSTANT(MAX_RNG_ENTROPY_SIZE, EQ) }, + { COMPILE_CONSTANT(RAM_INDEX_SPACE, EQ) }, + { COMPILE_CONSTANT(RSA_DEFAULT_PUBLIC_EXPONENT, EQ) }, + { COMPILE_CONSTANT(ENABLE_PCR_NO_INCREMENT, EQ) }, + { COMPILE_CONSTANT(CRT_FORMAT_RSA, EQ) }, + { COMPILE_CONSTANT(VENDOR_COMMAND_COUNT, EQ) }, + { COMPILE_CONSTANT(MAX_VENDOR_BUFFER_SIZE, EQ) }, + { COMPILE_CONSTANT(TPM_MAX_DERIVATION_BITS, EQ) }, + { COMPILE_CONSTANT(PROOF_SIZE, EQ) }, + { COMPILE_CONSTANT(HASH_COUNT, EQ) }, + + /* added for PA_COMPILE_CONSTANTS_VERSION == 3 */ + { COMPILE_CONSTANT(AES_128, LE) }, + { COMPILE_CONSTANT(AES_192, LE) }, + { COMPILE_CONSTANT(AES_256, LE) }, + { COMPILE_CONSTANT(SM4_128, LE) }, + { COMPILE_CONSTANT(ALG_CAMELLIA, LE) }, + { COMPILE_CONSTANT(CAMELLIA_128, LE) }, + { COMPILE_CONSTANT(CAMELLIA_192, LE) }, + { COMPILE_CONSTANT(CAMELLIA_256, LE) }, + { COMPILE_CONSTANT(ALG_SHA3_256, LE) }, + { COMPILE_CONSTANT(ALG_SHA3_384, LE) }, + { COMPILE_CONSTANT(ALG_SHA3_512, LE) }, + { COMPILE_CONSTANT(RSA_1024, LE) }, + { COMPILE_CONSTANT(RSA_2048, LE) }, + { COMPILE_CONSTANT(RSA_3072, LE) }, + { COMPILE_CONSTANT(RSA_4096, LE) }, + { COMPILE_CONSTANT(RSA_16384, LE) }, + { COMPILE_CONSTANT(RH_ACT_0, LE) }, + { COMPILE_CONSTANT(RH_ACT_1, LE) }, + { COMPILE_CONSTANT(RH_ACT_2, LE) }, + { COMPILE_CONSTANT(RH_ACT_3, LE) }, + { COMPILE_CONSTANT(RH_ACT_4, LE) }, + { COMPILE_CONSTANT(RH_ACT_5, LE) }, + { COMPILE_CONSTANT(RH_ACT_6, LE) }, + { COMPILE_CONSTANT(RH_ACT_7, LE) }, + { COMPILE_CONSTANT(RH_ACT_8, LE) }, + { COMPILE_CONSTANT(RH_ACT_9, LE) }, + { COMPILE_CONSTANT(RH_ACT_A, LE) }, + { COMPILE_CONSTANT(RH_ACT_B, LE) }, + { COMPILE_CONSTANT(RH_ACT_C, LE) }, + { COMPILE_CONSTANT(RH_ACT_D, LE) }, + { COMPILE_CONSTANT(RH_ACT_E, LE) }, + { COMPILE_CONSTANT(RH_ACT_F, LE) }, +}; + +static TPM_RC +UINT32_Unmarshal_CheckConstant(BYTE **buffer, INT32 *size, UINT32 constant, + const char *name, + enum CompareOp cmp, UINT16 struct_version) +{ + TPM_RC rc = TPM_RC_SUCCESS; + UINT32 value; + const char *op = NULL; + + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&value, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + switch (cmp) { + case EQ: + if (!(constant == value)) + op = "="; + break; + case LE: + if (!(value <= constant)) + op = "<="; + break; + case GE: + if (!(value >= constant)) + op = ">="; + break; + case DONTCARE: + break; + } + if (op) { + TPMLIB_LogTPM2Error("Unexpected value for %s; " + "its value %d is not %s %d; " + "(version: %u)\n", + name, value, op, constant, + struct_version); + rc = TPM_RC_BAD_PARAMETER; + } + } + return rc; +} + +#define PA_COMPILE_CONSTANTS_MAGIC 0xc9ea6431 +#define PA_COMPILE_CONSTANTS_VERSION 3 + +/* Marshal compile-time constants related to persistent-all state */ +static UINT32 +PACompileConstants_Marshal(BYTE **buffer, INT32 *size) +{ + unsigned i; + UINT32 written, tmp_uint32; + UINT32 array_size = ARRAY_SIZE(pa_compile_constants); + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + PA_COMPILE_CONSTANTS_VERSION, + PA_COMPILE_CONSTANTS_MAGIC, 1); + + written += UINT32_Marshal(&array_size, buffer, size); + + for (i = 0; i < array_size; i++) { + tmp_uint32 = pa_compile_constants[i].constant; + written += UINT32_Marshal(&tmp_uint32, buffer, size); + } + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +PACompileConstants_Unmarshal(BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + unsigned i; + NV_HEADER hdr; + UINT32 array_size; + UINT32 exp_array_size = 0; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + PA_COMPILE_CONSTANTS_VERSION, + PA_COMPILE_CONSTANTS_MAGIC); + } + if (rc == TPM_RC_SUCCESS) { + switch (hdr.version) { + case 1: + case 2: + /* PA_COMPILE_CONSTANTS_VERSION 1 and 2 had 88 entries */ + exp_array_size = 88; + break; + case 3: + /* PA_COMPILE_CONSTANTS_VERSION 3 had 104 entries */ + exp_array_size = 120; + break; + default: + /* we don't suport anything newer - no downgrade */ + TPMLIB_LogTPM2Error("Unsupported PA_COMPILE_CONSTANTS version %d. " + "Supporting up to version %d.\n", + hdr.version, PA_COMPILE_CONSTANTS_VERSION); + rc = TPM_RC_BAD_VERSION; + } + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&array_size, buffer, size); + } + + if (rc == TPM_RC_SUCCESS && + array_size != exp_array_size) { + TPMLIB_LogTPM2Error("PA_COMPILE_CONSTANTS v%d has non-matching number of " + "elements; found %u, expected %u\n", + hdr.version, array_size, exp_array_size); + } + + for (i = 0; rc == TPM_RC_SUCCESS && i < exp_array_size; i++) + rc = UINT32_Unmarshal_CheckConstant( + buffer, size, pa_compile_constants[i].constant, + pa_compile_constants[i].name, + pa_compile_constants[i].cmp, hdr.version); + + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "PA_COMPILE_CONSTANTS", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + + /* keep marker at end: */ + return rc; +} + +#define PERSISTENT_DATA_MAGIC 0x12213443 +#define PERSISTENT_DATA_VERSION 4 + +static UINT16 +PERSISTENT_DATA_Marshal(PERSISTENT_DATA *data, BYTE **buffer, INT32 *size) +{ + UINT16 written; + UINT16 array_size; + UINT8 clocksize; + BOOL has_block; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + PERSISTENT_DATA_VERSION, + PERSISTENT_DATA_MAGIC, 4); + written += BOOL_Marshal(&data->disableClear, buffer, size); + written += TPM_ALG_ID_Marshal(&data->ownerAlg, buffer, size); + written += TPM_ALG_ID_Marshal(&data->endorsementAlg, buffer, size); + written += TPM_ALG_ID_Marshal(&data->lockoutAlg, buffer, size); + written += TPM2B_DIGEST_Marshal(&data->ownerPolicy, buffer, size); + written += TPM2B_DIGEST_Marshal(&data->endorsementPolicy, buffer, size); + written += TPM2B_DIGEST_Marshal(&data->lockoutPolicy, buffer, size); + written += TPM2B_AUTH_Marshal(&data->ownerAuth, buffer, size); + written += TPM2B_AUTH_Marshal(&data->endorsementAuth, buffer, size); + written += TPM2B_AUTH_Marshal(&data->lockoutAuth, buffer, size); + written += TPM2B_Marshal(&data->EPSeed.b, sizeof(data->EPSeed.t.buffer), buffer, size); + written += TPM2B_Marshal(&data->SPSeed.b, sizeof(data->SPSeed.t.buffer), buffer, size); + written += TPM2B_Marshal(&data->PPSeed.b, sizeof(data->PPSeed.t.buffer), buffer, size); + written += TPM2B_PROOF_Marshal(&data->phProof, buffer, size); + written += TPM2B_PROOF_Marshal(&data->shProof, buffer, size); + written += TPM2B_PROOF_Marshal(&data->ehProof, buffer, size); + written += UINT64_Marshal(&data->totalResetCount, buffer, size); + written += UINT32_Marshal(&data->resetCount, buffer, size); + +#if defined NUM_POLICY_PCR_GROUP && NUM_POLICY_PCR_GROUP > 0 + has_block = TRUE; +#else + has_block = FALSE; +#endif + written += BLOCK_SKIP_WRITE_PUSH(has_block, buffer, size); + +#if defined NUM_POLICY_PCR_GROUP && NUM_POLICY_PCR_GROUP > 0 + written += PCR_POLICY_Marshal(&data->pcrPolicies, buffer, size); +#endif + BLOCK_SKIP_WRITE_POP(size); + + written += TPML_PCR_SELECTION_Marshal(&data->pcrAllocated, buffer, size); + + /* ppList may grow */ + array_size = sizeof(data->ppList); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal(&data->ppList[0], array_size, buffer, size); + + written += UINT32_Marshal(&data->failedTries, buffer, size); + written += UINT32_Marshal(&data->maxTries, buffer, size); + written += UINT32_Marshal(&data->recoveryTime, buffer, size); + written += UINT32_Marshal(&data->lockoutRecovery, buffer, size); + written += BOOL_Marshal(&data->lockOutAuthEnabled, buffer, size); + written += UINT16_Marshal(&data->orderlyState, buffer, size); + + /* auditCommands may grow */ + array_size = sizeof(data->auditCommands); + written += UINT16_Marshal(&array_size, buffer, size); + written += Array_Marshal(&data->auditCommands[0], array_size, + buffer, size); + + written += TPM_ALG_ID_Marshal(&data->auditHashAlg, buffer, size); + written += UINT64_Marshal(&data->auditCounter, buffer, size); + written += UINT32_Marshal(&data->algorithmSet, buffer, size); + written += UINT32_Marshal(&data->firmwareV1, buffer, size); + written += UINT32_Marshal(&data->firmwareV2, buffer, size); +#if CLOCK_STOPS + clocksize = sizeof(UINT64); + written += UINT8_Marshal(&clocksize, buffer, size); + written += UINT64_Marshal(&data->timeEpoch, buffer, size); +#else + clocksize = sizeof(UINT32); + written += UINT8_Marshal(&clocksize, buffer, size); + written += UINT32_Marshal(&data->timeEpoch, buffer, size); +#endif + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + + /* there's a 'shadow' pcrAllocated as well */ + written += TPML_PCR_SELECTION_Marshal(&gp.pcrAllocated, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + written += SEED_COMPAT_LEVEL_Marshal(&data->EPSeedCompatLevel, + buffer, size); + written += SEED_COMPAT_LEVEL_Marshal(&data->SPSeedCompatLevel, + buffer, size); + written += SEED_COMPAT_LEVEL_Marshal(&data->PPSeedCompatLevel, + buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + BLOCK_SKIP_WRITE_POP(size); + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +PERSISTENT_DATA_Unmarshal(PERSISTENT_DATA *data, BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + UINT16 array_size; + UINT8 clocksize; + BOOL needs_block; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + PERSISTENT_DATA_VERSION, + PERSISTENT_DATA_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&data->disableClear, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_ALG_ID_Unmarshal(&data->ownerAlg, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_ALG_ID_Unmarshal(&data->endorsementAlg, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_ALG_ID_Unmarshal(&data->lockoutAlg, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_DIGEST_Unmarshal(&data->ownerPolicy, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_DIGEST_Unmarshal(&data->endorsementPolicy, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_DIGEST_Unmarshal(&data->lockoutPolicy, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&data->ownerAuth, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&data->endorsementAuth, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_AUTH_Unmarshal(&data->lockoutAuth, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_Unmarshal(&data->EPSeed.b, PRIMARY_SEED_SIZE, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_Unmarshal(&data->SPSeed.b, PRIMARY_SEED_SIZE, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_Unmarshal(&data->PPSeed.b, PRIMARY_SEED_SIZE, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_PROOF_Unmarshal(&data->phProof, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_PROOF_Unmarshal(&data->shProof, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM2B_PROOF_Unmarshal(&data->ehProof, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->totalResetCount, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->resetCount, buffer, size); + } + +#if defined NUM_POLICY_PCR_GROUP && NUM_POLICY_PCR_GROUP > 0 + needs_block = TRUE; +#else + needs_block = FALSE; +#endif + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_num_policy_pcr_group, needs_block, buffer, size, + "PERSISTENT_DATA", "pcrPolicies"); + } +#if defined NUM_POLICY_PCR_GROUP && NUM_POLICY_PCR_GROUP > 0 + if (rc == TPM_RC_SUCCESS) { + rc = PCR_POLICY_Unmarshal(&data->pcrPolicies, buffer, size); + } +#endif +skip_num_policy_pcr_group: + + if (rc == TPM_RC_SUCCESS) { + rc = TPML_PCR_SELECTION_Unmarshal(&data->pcrAllocated, buffer, size); + + shadow.pcrAllocated = data->pcrAllocated; + shadow.pcrAllocatedIsNew = TRUE; + } + + /* ppList array may not be our size */ + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + BYTE buf[array_size]; + rc = Array_Unmarshal(buf, array_size, buffer, size); + memcpy(data->ppList, buf, MIN(array_size, sizeof(data->ppList))); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->failedTries, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->maxTries, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->recoveryTime, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->lockoutRecovery, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = BOOL_Unmarshal(&data->lockOutAuthEnabled, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + /* TPM_SU_Unmarshal returns error if value is 0 */ + rc = UINT16_Unmarshal(&data->orderlyState, buffer, size); + } + + /* auditCommands array may not be our size */ + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&array_size, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + BYTE buf[array_size]; + rc = Array_Unmarshal(buf, array_size, buffer, size); + memcpy(data->auditCommands, buf, + MIN(array_size, sizeof(data->auditCommands))); + } + + if (rc == TPM_RC_SUCCESS) { + rc = TPM_ALG_ID_Unmarshal(&data->auditHashAlg, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->auditCounter, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->algorithmSet, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->firmwareV1, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->firmwareV2, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT8_Unmarshal(&clocksize, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { +#if CLOCK_STOPS + if (clocksize != sizeof(UINT64)) { + TPMLIB_LogTPM2Error("Unexpected clocksize for epoch; " + "Expected %u, got %u\n", + sizeof(UINT64), clocksize); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&data->timeEpoch, buffer, size); + } +#else + if (clocksize != sizeof(UINT32)) { + TPMLIB_LogTPM2Error("Unexpected clocksize for epoch; " + "Expected %zu, got %u\n", + sizeof(UINT32), clocksize); + rc = TPM_RC_BAD_PARAMETER; + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&data->timeEpoch, buffer, size); + } +#endif + } + + /* default values before conditional block */ + data->EPSeedCompatLevel = SEED_COMPAT_LEVEL_ORIGINAL; + data->SPSeedCompatLevel = SEED_COMPAT_LEVEL_ORIGINAL; + data->PPSeedCompatLevel = SEED_COMPAT_LEVEL_ORIGINAL; + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, hdr.version >= 3, buffer, size, + "PERSISTENT_DATA", "version 3 or later"); + if (rc == TPM_RC_SUCCESS) { + rc = TPML_PCR_SELECTION_Unmarshal(&shadow.pcrAllocated, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_future_versions, hdr.version >= 4, buffer, size, + "PERSISTENT_DATA", "version 4 or later"); + } + + if (rc == TPM_RC_SUCCESS) { + rc = SEED_COMPAT_LEVEL_Unmarshal(&data->EPSeedCompatLevel, + buffer, size, "EPSeed"); + } + if (rc == TPM_RC_SUCCESS) { + rc = SEED_COMPAT_LEVEL_Unmarshal(&data->SPSeedCompatLevel, + buffer, size, "SPSeed"); + } + if (rc == TPM_RC_SUCCESS) { + rc = SEED_COMPAT_LEVEL_Unmarshal(&data->PPSeedCompatLevel, + buffer, size, "PPSeed"); + } + + if (rc == TPM_RC_SUCCESS) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "PERSISTENT_DATA", "version 5 or later"); + } + /* future versions nest-append here */ + } + +skip_future_versions: + + if (rc != TPM_RC_SUCCESS) { + TPMLIB_LogTPM2Error("Failed to unmarshal PERSISTENT_DATA version %u\n", + hdr.version); + } + return rc; +} + +#define INDEX_ORDERLY_RAM_VERSION 2 +#define INDEX_ORDERLY_RAM_MAGIC 0x5346feab +static UINT32 +INDEX_ORDERLY_RAM_Marshal(void *array, size_t array_size, + BYTE **buffer, INT32 *size) +{ + UINT16 written; + NV_RAM_HEADER nrh, *nrhp; + UINT16 offset = 0; + UINT16 datasize; + UINT32 sourceside_size = array_size; + BLOCK_SKIP_INIT; + + written = NV_HEADER_Marshal(buffer, size, + INDEX_ORDERLY_RAM_VERSION, + INDEX_ORDERLY_RAM_MAGIC, 1); + + /* the size of the array we are using here */ + written += UINT32_Marshal(&sourceside_size, buffer, size); + + while (TRUE) { + nrhp = array + offset; + /* nrhp may point to misaligned address (ubsan), so use 'nrh'; first access only 'size' */ + memcpy(&nrh, nrhp, sizeof(nrh.size)); + + /* write the NVRAM header; + nrh->size holds the complete size including data; + nrh->size = 0 indicates the end */ + written += UINT32_Marshal(&nrh.size, buffer, size); + if (nrh.size == 0) + break; + /* copy the entire structure now; ubsan does not allow 'nrh = *nrhp' */ + memcpy(&nrh, nrhp, sizeof(nrh)); + + written += TPM_HANDLE_Marshal(&nrh.handle, buffer, size); + written += TPMA_NV_Marshal(&nrh.attributes, buffer, size); + + if (offset + nrh.size > array_size) { + TPMLIB_LogTPM2Error("INDEX_ORDERLY_RAM: nrh->size corrupted: %d\n", + nrh.size); + break; + } + /* write data size before array */ + if (nrh.size < sizeof(NV_RAM_HEADER)) { + TPMLIB_LogTPM2Error( + "INDEX_ORDERLY_RAM: nrh->size < sizeof(NV_RAM_HEADER): %d < %zu\n", + (int)nrh.size, sizeof(NV_RAM_HEADER)); + break; + } + datasize = nrh.size - sizeof(NV_RAM_HEADER); + written += UINT16_Marshal(&datasize, buffer, size); + if (datasize > 0) { + /* append the data */ + written += Array_Marshal(array + offset + sizeof(NV_RAM_HEADER), + datasize, buffer, size); + } + offset += nrh.size; + if (offset + sizeof(NV_RAM_HEADER) > array_size) { + /* nothing will fit anymore and there won't be a 0-sized + * terminating node (@1). + */ + break; + } + } + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +static TPM_RC +INDEX_ORDERLY_RAM_Unmarshal(void *array, size_t array_size, + BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + NV_RAM_HEADER nrh, *nrhp; + UINT16 offset = 0; + UINT16 datasize = 0; + UINT32 sourceside_size; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + INDEX_ORDERLY_RAM_VERSION, + INDEX_ORDERLY_RAM_MAGIC); + } + if (rc == TPM_RC_SUCCESS) { + /* get the size of the array on the source side + we can accommodate different sizes when rebuilding + but if it doesn't fit we'll error out and report the sizes */ + rc = UINT32_Unmarshal(&sourceside_size, buffer, size); + } + + while (rc == TPM_RC_SUCCESS) { + memset(&nrh, 0, sizeof(nrh)); /* coverity */ + /* nrhp may point to misaligned address (ubsan) + * we read 'into' nrh and copy to nrhp at end + */ + nrhp = array + offset; + + if (offset + sizeof(NV_RAM_HEADER) > sourceside_size) { + /* this case can occur with the previous entry filling up the + * space; in this case there will not be a 0-sized terminating + * node (see @1 above). We clear the rest of our space. + */ + if (array_size > offset) + memset(nrhp, 0, array_size - offset); + break; + } + + /* write the NVRAM header; + nrh->size holds the complete size including data; + nrh->size = 0 indicates the end */ + if (offset + sizeof(nrh.size) > array_size) { + offset += sizeof(nrh.size); + goto exit_size; + } + + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&nrh.size, buffer, size); + if (rc == TPM_RC_SUCCESS && nrh.size == 0) { + memcpy(nrhp, &nrh, sizeof(nrh.size)); + break; + } + } + if (offset + sizeof(NV_RAM_HEADER) > array_size) { + offset += sizeof(NV_RAM_HEADER); + goto exit_size; + } + if (rc == TPM_RC_SUCCESS) { + rc = TPM_HANDLE_Unmarshal(&nrh.handle, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = TPMA_NV_Unmarshal(&nrh.attributes, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT16_Unmarshal(&datasize, buffer, size); + } + if (offset + sizeof(NV_RAM_HEADER) + datasize > array_size) { + offset += sizeof(NV_RAM_HEADER) + datasize; + goto exit_size; + } + if (rc == TPM_RC_SUCCESS && datasize > 0) { + /* append the data */ + rc = Array_Unmarshal(array + offset + sizeof(NV_RAM_HEADER), + datasize, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + /* fix up size in case it is architecture-dependent */ + nrh.size = sizeof(nrh) + datasize; + offset += nrh.size; + /* copy header into possibly misaligned address in NVRAM */ + *nrhp = nrh; + } + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "INDEX_ORDERLY_RAM", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + return rc; + +exit_size: + TPMLIB_LogTPM2Error("INDEX_ORDERLY_RAM:" + "Insufficient space to write to offset %u;" + "Source had %u bytes, we have %zu bytes.\n", + offset, sourceside_size, array_size); + return TPM_RC_SIZE; +} + +static void +USER_NVRAM_Display(const char *msg) +{ + NV_REF entryRef = NV_USER_DYNAMIC; + UINT32 entrysize; + UINT64 offset = 0; + TPM_HANDLE handle; + UINT32 datasize; + NV_INDEX nvi; + OBJECT obj; + UINT64 maxCount; + + fprintf(stderr, "USER_NVRAM contents %s:\n", msg); + + while (TRUE) { + /* 1st: entrysize */ + NvRead(&entrysize, entryRef, sizeof(entrysize)); + fprintf(stderr, " offset: %5"PRIu32" entry size: %5u ", + (UINT32)(entryRef - NV_USER_DYNAMIC), entrysize); + offset = sizeof(UINT32); + + if (entrysize == 0) + break; + + /* 2nd: the handle -- it will tell us what datatype this is */ + NvRead(&handle, entryRef + offset, sizeof(handle)); + fprintf(stderr, "handle: 0x%08x ", handle); + + switch (HandleGetType(handle)) { + case TPM_HT_NV_INDEX: + fprintf(stderr, " (NV_INDEX) "); + /* NV_INDEX has the index again at offset 0! */ + NvReadNvIndexInfo(entryRef + offset, &nvi); + offset += sizeof(nvi); + datasize = entrysize - sizeof(UINT32) - sizeof(nvi); + fprintf(stderr, " datasize: %u\n",datasize); + break; + break; + case TPM_HT_PERSISTENT: + fprintf(stderr, " (PERSISTENT)"); + offset += sizeof(handle); + + NvRead(&obj, entryRef + offset, sizeof(obj)); + offset += sizeof(obj); + fprintf(stderr, " sizeof(obj): %zu\n", sizeof(obj)); + break; + default: + TPMLIB_LogTPM2Error("USER_NVRAM: Corrupted handle: %08x\n", handle); + } + /* advance to next entry */ + entryRef += entrysize; + } + fprintf(stderr, "\n"); + + NvRead(&maxCount, entryRef + offset, sizeof(maxCount)); + fprintf(stderr, " maxCount: %"PRIu64"\n", maxCount); + fprintf(stderr, "-----------------------------\n"); +} + +#define USER_NVRAM_VERSION 2 +#define USER_NVRAM_MAGIC 0x094f22c3 +static UINT32 +USER_NVRAM_Marshal(BYTE **buffer, INT32 *size) +{ + UINT32 written; + UINT32 entrysize; + UINT64 offset; + NV_REF entryRef = NV_USER_DYNAMIC; + NV_INDEX nvi; + UINT64 maxCount; + TPM_HANDLE handle; + OBJECT obj; + UINT32 datasize; + UINT64 sourceside_size = NV_USER_DYNAMIC_END - NV_USER_DYNAMIC; + BLOCK_SKIP_INIT; + + if (FALSE) + USER_NVRAM_Display("before marshalling"); + + written = NV_HEADER_Marshal(buffer, size, + USER_NVRAM_VERSION, USER_NVRAM_MAGIC, + 1); + + written += UINT64_Marshal(&sourceside_size, buffer, size); + + while (TRUE) { + /* 1st: entrysize */ + NvRead(&entrysize, entryRef, sizeof(entrysize)); + offset = sizeof(UINT32); + + /* entrysize is in native format now */ + written += UINT32_Marshal(&entrysize, buffer, size); + if (entrysize == 0) + break; + + /* 2nd: the handle -- it will tell us what datatype this is */ + NvRead(&handle, entryRef + offset, sizeof(handle)); + written += TPM_HANDLE_Marshal(&handle, buffer, size); + + switch (HandleGetType(handle)) { + case TPM_HT_NV_INDEX: + /* NV_INDEX has the index again at offset 0! */ + NvReadNvIndexInfo(entryRef + offset, &nvi); + offset += sizeof(nvi); + + written += NV_INDEX_Marshal(&nvi, buffer, size); + /* after that: bulk data */ + datasize = entrysize - sizeof(UINT32) - sizeof(nvi); + written += UINT32_Marshal(&datasize, buffer, size); + if (datasize > 0) { + BYTE buf[datasize]; + NvRead(buf, entryRef + offset, datasize); + written += Array_Marshal(buf, datasize, buffer, size); + } + break; + case TPM_HT_PERSISTENT: + offset += sizeof(handle); + + NvRead(&obj, entryRef + offset, sizeof(obj)); + offset += sizeof(obj); + written += ANY_OBJECT_Marshal(&obj, buffer, size); + break; + default: + TPMLIB_LogTPM2Error("USER_NVRAM: Corrupted handle: %08x\n", handle); + } + /* advance to next entry */ + entryRef += entrysize; + } + NvRead(&maxCount, entryRef + offset, sizeof(maxCount)); + written += UINT64_Marshal(&maxCount, buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +/* + * USER_NVRAM_Unmarshal: + * + * Unmarshal the byte stream directly into the NVRAM. Ensure that the + * the data fit into the user NVRAM before writing them. + * + * This function fails if there's not enough NVRAM to write the data into + * or if an unknown handle type was encountered. + */ +static TPM_RC +USER_NVRAM_Unmarshal(BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + NV_REF entryRef = NV_USER_DYNAMIC; + UINT32 entrysize; + UINT64 offset, o = 0; + NV_INDEX nvi; + UINT64 maxCount; + TPM_HANDLE handle; + OBJECT obj; + UINT32 datasize = 0; + UINT64 sourceside_size; + UINT64 array_size = NV_USER_DYNAMIC_END - NV_USER_DYNAMIC; + UINT64 entrysize_offset; + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + USER_NVRAM_VERSION, + USER_NVRAM_MAGIC); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&sourceside_size, buffer, size); + } + + while (rc == TPM_RC_SUCCESS) { + /* 1st: entrysize */ + if (o + sizeof(UINT32) > array_size) { + o += sizeof(UINT32); + goto exit_size; + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&entrysize, buffer, size); + + /* the entrysize also depends on the sizeof(nvi); we may have to + update it if sizeof(nvi) changed between versions */ + entrysize_offset = o; + NvWrite(entryRef + o, sizeof(entrysize), &entrysize); + offset = sizeof(UINT32); + if (entrysize == 0) + break; + } + /* 2nd: handle */ + if (rc == TPM_RC_SUCCESS) { + rc = TPM_HANDLE_Unmarshal(&handle, buffer, size); + } + + if (rc == TPM_RC_SUCCESS) { + switch (HandleGetType(handle)) { + case TPM_HT_NV_INDEX: + /* we need to read the handle again */ + if (rc == TPM_RC_SUCCESS && + o + offset + sizeof(nvi) > array_size) { + o += offset + sizeof(nvi); + goto exit_size; + } + if (rc == TPM_RC_SUCCESS) { + rc = NV_INDEX_Unmarshal(&nvi, buffer, size); + NvWrite(entryRef + o + offset, sizeof(nvi), &nvi); + offset += sizeof(nvi); + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal(&datasize, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + /* datasize cannot exceed 64k + a few bytes */ + if (datasize > (0x10000 + 0x100)) { + TPMLIB_LogTPM2Error("datasize for NV_INDEX too " + "large: %u\n", datasize); + rc = TPM_RC_SIZE; + } + } + if (rc == TPM_RC_SUCCESS && + o + offset + datasize > array_size) { + o += offset + datasize; + goto exit_size; + } + if (rc == TPM_RC_SUCCESS && datasize > 0) { + BYTE buf[datasize]; + rc = Array_Unmarshal(buf, datasize, buffer, size); + NvWrite(entryRef + o + offset, datasize, buf); + offset += datasize; + + /* update the entry size; account for expanding nvi */ + entrysize = sizeof(UINT32) + sizeof(nvi) + datasize; + } + break; + case TPM_HT_PERSISTENT: + if (rc == TPM_RC_SUCCESS && + o + offset + sizeof(TPM_HANDLE) + sizeof(obj) > + array_size) { + o += offset + sizeof(TPM_HANDLE) + sizeof(obj); + goto exit_size; + } + + if (rc == TPM_RC_SUCCESS) { + NvWrite(entryRef + o + offset, sizeof(handle), &handle); + offset += sizeof(TPM_HANDLE); + + memset(&obj, 0, sizeof(obj)); + rc = ANY_OBJECT_Unmarshal(&obj, buffer, size, true); + NvWrite(entryRef + o + offset, sizeof(obj), &obj); + offset += sizeof(obj); + } + entrysize = sizeof(UINT32) + sizeof(TPM_HANDLE) + sizeof(obj); + break; + default: + TPMLIB_LogTPM2Error("USER_NVRAM: " + "Read handle 0x%08x of unknown type\n", + handle); + rc = TPM_RC_HANDLE; + } + + if (rc == TPM_RC_SUCCESS) { + NvWrite(entryRef + entrysize_offset, sizeof(entrysize), &entrysize); + } + } + if (rc == TPM_RC_SUCCESS) { + o += offset; + } + } + if (rc == TPM_RC_SUCCESS && + o + offset + sizeof(UINT64) > array_size) { + o += offset + sizeof(UINT64); + goto exit_size; + } + if (rc == TPM_RC_SUCCESS) { + rc = UINT64_Unmarshal(&maxCount, buffer, size); + NvWrite(entryRef + o + offset, sizeof(maxCount), &maxCount); + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "USER_NVRAM", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + + if (FALSE) + USER_NVRAM_Display("after unmarshalling"); + + return rc; + +exit_size: + TPMLIB_LogTPM2Error("USER_NVRAM:" + "Insufficient space to write to offset %"PRIu64";" + "Source had %"PRIu64" bytes, we have %"PRIu64" " + "bytes.\n", + o, sourceside_size, array_size); + return TPM_RC_SIZE; +} + +/* + * Write out all persistent data by reading them from the NVRAM + * and then writing them out. + * + * - PERSISTENT_DATA (NV_PERSISTENT_DATA) + * - ORDERLY_DATA (NV_STATE_RESET_DATA) + * - STATE_RESET_DATA (NV_STATE_RESET_DATA) + * - STATE_CLEAR_DATA (NV_STATE_CLEAR_DATA) + * - indexOrderlyRAM (NV_INDEX_RAM_DATA) + * - NVRAM locations (NV_USER_DYNAMIC) + */ +#define PERSISTENT_ALL_VERSION 3 +#define PERSISTENT_ALL_MAGIC 0xab364723 +UINT32 +PERSISTENT_ALL_Marshal(BYTE **buffer, INT32 *size) +{ + UINT32 magic; + PERSISTENT_DATA pd; + ORDERLY_DATA od; + STATE_RESET_DATA srd; + STATE_CLEAR_DATA scd; + UINT32 written = 0; + BYTE indexOrderlyRam[sizeof(s_indexOrderlyRam)]; + BLOCK_SKIP_INIT; + BOOL writeSuState; + + NvRead(&pd, NV_PERSISTENT_DATA, sizeof(pd)); + NvRead(&od, NV_ORDERLY_DATA, sizeof(od)); + NvRead(&srd, NV_STATE_RESET_DATA, sizeof(srd)); + NvRead(&scd, NV_STATE_CLEAR_DATA, sizeof(scd)); + + /* indexOrderlyRam was never endianess-converted; so it's native */ + NvRead(indexOrderlyRam, NV_INDEX_RAM_DATA, sizeof(indexOrderlyRam)); + + written = NV_HEADER_Marshal(buffer, size, + PERSISTENT_ALL_VERSION, + PERSISTENT_ALL_MAGIC, 3); + written += PACompileConstants_Marshal(buffer, size); + written += PERSISTENT_DATA_Marshal(&pd, buffer, size); + written += ORDERLY_DATA_Marshal(&od, buffer, size); + writeSuState = (pd.orderlyState & TPM_SU_STATE_MASK) == TPM_SU_STATE; + /* starting with v3 we only write STATE_RESET and STATE_CLEAR if needed */ + if (writeSuState) { + written += STATE_RESET_DATA_Marshal(&srd, buffer, size); + written += STATE_CLEAR_DATA_Marshal(&scd, buffer, size); + } + written += INDEX_ORDERLY_RAM_Marshal(indexOrderlyRam, sizeof(indexOrderlyRam), + buffer, size); + written += USER_NVRAM_Marshal(buffer, size); + + written += BLOCK_SKIP_WRITE_PUSH(TRUE, buffer, size); + /* future versions append below this line */ + + BLOCK_SKIP_WRITE_POP(size); + + magic = PERSISTENT_ALL_MAGIC; + written += UINT32_Marshal(&magic, buffer, size); + + BLOCK_SKIP_WRITE_CHECK; + + return written; +} + +TPM_RC +PERSISTENT_ALL_Unmarshal(BYTE **buffer, INT32 *size) +{ + TPM_RC rc = TPM_RC_SUCCESS; + NV_HEADER hdr; + PERSISTENT_DATA pd; + ORDERLY_DATA od; + STATE_RESET_DATA srd; + STATE_CLEAR_DATA scd; + BYTE indexOrderlyRam[sizeof(s_indexOrderlyRam)]; + BOOL readSuState = false; + + memset(&pd, 0, sizeof(pd)); + memset(&od, 0, sizeof(od)); + memset(&srd, 0, sizeof(srd)); + memset(&scd, 0, sizeof(scd)); + memset(indexOrderlyRam, 0, sizeof(indexOrderlyRam)); + + if (rc == TPM_RC_SUCCESS) { + rc = NV_HEADER_Unmarshal(&hdr, buffer, size, + PERSISTENT_ALL_VERSION, + PERSISTENT_ALL_MAGIC); + } + + if (rc == TPM_RC_SUCCESS) { + rc = PACompileConstants_Unmarshal(buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = PERSISTENT_DATA_Unmarshal(&pd, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + if (hdr.version < 3) { + /* STATE_RESET and STATE_CLEAR were always written before version 3 */ + readSuState = true; + } else { + readSuState = (pd.orderlyState & TPM_SU_STATE_MASK) == TPM_SU_STATE; + } + rc = ORDERLY_DATA_Unmarshal(&od, buffer, size); + } + if (rc == TPM_RC_SUCCESS && readSuState) { + rc = STATE_RESET_DATA_Unmarshal(&srd, buffer, size); + } + if (rc == TPM_RC_SUCCESS && readSuState) { + rc = STATE_CLEAR_DATA_Unmarshal(&scd, buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + rc = INDEX_ORDERLY_RAM_Unmarshal(indexOrderlyRam, sizeof(indexOrderlyRam), + buffer, size); + } + if (rc == TPM_RC_SUCCESS) { + /* this will write it into NVRAM right away */ + rc = USER_NVRAM_Unmarshal(buffer, size); + /* if rc == TPM_RC_SUCCESS, we know that there is enough + NVRAM to fit everything. */ + } + + /* version 2 starts having indicator for next versions that we can skip; + this allows us to downgrade state */ + if (rc == TPM_RC_SUCCESS && hdr.version >= 2) { + BLOCK_SKIP_READ(skip_future_versions, FALSE, buffer, size, + "USER NVRAM", "version 3 or later"); + /* future versions nest-append here */ + } + +skip_future_versions: + if (rc == TPM_RC_SUCCESS) { + rc = UINT32_Unmarshal_Check(&hdr.magic, + PERSISTENT_ALL_MAGIC, buffer, size, + "PERSISTENT_ALL_MAGIC after USER_NVRAM"); + } + + if (rc == TPM_RC_SUCCESS) { + NvWrite(NV_PERSISTENT_DATA, sizeof(pd), &pd); + NvWrite(NV_ORDERLY_DATA, sizeof(od), &od); + NvWrite(NV_STATE_RESET_DATA, sizeof(srd), &srd); + NvWrite(NV_STATE_CLEAR_DATA, sizeof(scd), &scd); + NvWrite(NV_INDEX_RAM_DATA, sizeof(indexOrderlyRam), indexOrderlyRam); + } + + return rc; +} + +void +NVShadowRestore(void) +{ + if (shadow.pcrAllocatedIsNew) { + gp.pcrAllocated = shadow.pcrAllocated; + shadow.pcrAllocatedIsNew = FALSE; + } +} |