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trezor-firmware
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storage: make storage accessible only via functions

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add calls also for debug build and use them in fsm
pull/25/head
Pavol Rusnak 7 years ago
parent 41901a8056
commit 57bbcc754a
6 changed files with 96 additions and 39 deletions
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28
firmware/fsm.c
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@ -217,20 +217,20 @@ void fsm_msgGetFeatures(GetFeatures *msg)
resp->has_minor_version = true; resp->minor_version = VERSION_MINOR;
resp->has_patch_version = true; resp->patch_version = VERSION_PATCH;
resp->has_device_id = true; strlcpy(resp->device_id, storage_uuid_str, sizeof(resp->device_id));
resp->has_pin_protection = true; resp->pin_protection = storage.has_pin;
resp->has_passphrase_protection = true; resp->passphrase_protection = storage.has_passphrase_protection && storage.passphrase_protection;
resp->has_pin_protection = true; resp->pin_protection = storage_hasPin();
resp->has_passphrase_protection = true; resp->passphrase_protection = storage_hasPassphraseProtection();
#ifdef SCM_REVISION
int len = sizeof(SCM_REVISION) - 1;
resp->has_revision = true; memcpy(resp->revision.bytes, SCM_REVISION, len); resp->revision.size = len;
#endif
resp->has_bootloader_hash = true; resp->bootloader_hash.size = memory_bootloader_hash(resp->bootloader_hash.bytes);
if (storage.has_language) {
if (storage_getLanguage()) {
resp->has_language = true;
strlcpy(resp->language, storage.language, sizeof(resp->language));
strlcpy(resp->language, storage_getLanguage(), sizeof(resp->language));
}
if (storage.has_label) {
if (storage_getLabel()) {
resp->has_label = true;
strlcpy(resp->label, storage.label, sizeof(resp->label));
strlcpy(resp->label, storage_getLabel(), sizeof(resp->label));
}
_Static_assert(pb_arraysize(Features, coins) >= COINS_COUNT, "Features.coins max_count not large enough");
@ -262,7 +262,7 @@ void fsm_msgGetFeatures(GetFeatures *msg)
resp->coins[i].force_bip143 = coins[i].force_bip143;
}
resp->has_initialized = true; resp->initialized = storage_isInitialized();
resp->has_imported = true; resp->imported = storage.has_imported && storage.imported;
resp->has_imported = true; resp->imported = storage_isImported();
resp->has_pin_cached = true; resp->pin_cached = session_isPinCached();
resp->has_passphrase_cached = true; resp->passphrase_cached = session_isPassphraseCached();
resp->has_needs_backup = true; resp->needs_backup = storage_needsBackup();
@ -1520,9 +1520,9 @@ void fsm_msgDebugLinkGetState(DebugLinkGetState *msg)
resp.layout.size = OLED_BUFSIZE;
memcpy(resp.layout.bytes, oledGetBuffer(), OLED_BUFSIZE);
if (storage.has_pin) {
if (storage_hasPin()) {
resp.has_pin = true;
strlcpy(resp.pin, storage.pin, sizeof(resp.pin));
strlcpy(resp.pin, storage_getPin(), sizeof(resp.pin));
}
resp.has_matrix = true;
@ -1540,18 +1540,18 @@ void fsm_msgDebugLinkGetState(DebugLinkGetState *msg)
resp.has_recovery_word_pos = true;
resp.recovery_word_pos = recovery_get_word_pos();
if (storage.has_mnemonic) {
if (storage_hasMnemonic()) {
resp.has_mnemonic = true;
strlcpy(resp.mnemonic, storage.mnemonic, sizeof(resp.mnemonic));
strlcpy(resp.mnemonic, storage_getMnemonic(), sizeof(resp.mnemonic));
}
if (storage.has_node) {
if (storage_hasNode()) {
resp.has_node = true;
memcpy(&(resp.node), &(storage.node), sizeof(HDNode));
memcpy(&(resp.node), storage_getNode(), sizeof(HDNode));
}
resp.has_passphrase_protection = true;
resp.passphrase_protection = storage.has_passphrase_protection && storage.passphrase_protection;
resp.passphrase_protection = storage_hasPassphraseProtection();
msg_debug_write(MessageType_MessageType_DebugLinkState, &resp);
}

4
firmware/protect.c
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@ -155,7 +155,7 @@ static void protectCheckMaxTry(uint32_t wait) {
bool protectPin(bool use_cached)
{
if (!storage.has_pin || storage.pin[0] == 0 || (use_cached && session_isPinCached())) {
if (!storage_hasPin() || (use_cached && session_isPinCached())) {
return true;
}
uint32_t *fails = storage_getPinFailsPtr();
@ -237,7 +237,7 @@ bool protectChangePin(void)
bool protectPassphrase(void)
{
if (!storage.has_passphrase_protection || !storage.passphrase_protection || session_isPassphraseCached()) {
if (!storage_hasPassphraseProtection() || session_isPassphraseCached()) {
return true;
}

11
firmware/recovery.c
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@ -130,7 +130,7 @@ static void recovery_request(void) {
* Check mnemonic and send success/failure.
*/
static void recovery_done(void) {
char new_mnemonic[sizeof(storage.mnemonic)] = {0};
char new_mnemonic[241] = {0}; // TODO: remove constant
strlcpy(new_mnemonic, words[0], sizeof(new_mnemonic));
for (uint32_t i = 1; i < word_count; i++) {
@ -141,13 +141,11 @@ static void recovery_done(void) {
// New mnemonic is valid.
if (!dry_run) {
// Update mnemonic on storage.
storage.has_mnemonic = true;
strlcpy(storage.mnemonic, new_mnemonic, sizeof(new_mnemonic));
storage_setMnemonic(new_mnemonic);
memset(new_mnemonic, 0, sizeof(new_mnemonic));
if (!enforce_wordlist) {
// not enforcing => mark storage as imported
storage.has_imported = true;
storage.imported = true;
storage_setImported(true);
}
storage_commit();
fsm_sendSuccess(_("Device recovered"));
@ -421,8 +419,7 @@ void recovery_init(uint32_t _word_count, bool passphrase_protection, bool pin_pr
return;
}
storage.has_passphrase_protection = true;
storage.passphrase_protection = passphrase_protection;
storage_setPassphraseProtection(passphrase_protection);
storage_setLanguage(language);
storage_setLabel(label);
storage_setU2FCounter(u2f_counter);

25
firmware/reset.c
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@ -65,8 +65,7 @@ void reset_init(bool display_random, uint32_t _strength, bool passphrase_protect
return;
}
storage.has_passphrase_protection = true;
storage.passphrase_protection = passphrase_protection;
storage_setPassphraseProtection(passphrase_protection);
storage_setLanguage(language);
storage_setLabel(label);
storage_setU2FCounter(u2f_counter);
@ -88,14 +87,11 @@ void reset_entropy(const uint8_t *ext_entropy, uint32_t len)
sha256_Update(&ctx, int_entropy, 32);
sha256_Update(&ctx, ext_entropy, len);
sha256_Final(&ctx, int_entropy);
strlcpy(storage.mnemonic, mnemonic_from_data(int_entropy, strength / 8), sizeof(storage.mnemonic));
storage_setNeedsBackup(true);
storage_setMnemonic(mnemonic_from_data(int_entropy, strength / 8));
memset(int_entropy, 0, 32);
awaiting_entropy = false;
storage.has_mnemonic = true;
storage.has_needs_backup = true;
storage.needs_backup = true;
if (skip_backup) {
storage_commit();
fsm_sendSuccess(_("Device successfully initialized"));
@ -116,27 +112,28 @@ void reset_backup(bool separated)
return;
}
storage.has_needs_backup = true;
storage.needs_backup = false;
storage_setNeedsBackup(false);
if (separated) {
storage_commit();
}
const char *mnemonic = storage_getMnemonic();
for (int pass = 0; pass < 2; pass++) {
int i = 0, word_pos = 1;
while (storage.mnemonic[i] != 0) {
while (mnemonic[i] != 0) {
// copy current_word
int j = 0;
while (storage.mnemonic[i] != ' ' && storage.mnemonic[i] != 0 && j + 1 < (int)sizeof(current_word)) {
current_word[j] = storage.mnemonic[i];
while (mnemonic[i] != ' ' && mnemonic[i] != 0 && j + 1 < (int)sizeof(current_word)) {
current_word[j] = mnemonic[i];
i++; j++;
}
current_word[j] = 0;
if (storage.mnemonic[i] != 0) {
if (mnemonic[i] != 0) {
i++;
}
layoutResetWord(current_word, pass, word_pos, storage.mnemonic[i] == 0);
layoutResetWord(current_word, pass, word_pos, mnemonic[i] == 0);
if (!protectButton(ButtonRequestType_ButtonRequest_ConfirmWord, true)) {
if (!separated) {
storage_reset();

53
firmware/storage.c
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@ -343,6 +343,11 @@ void storage_setPassphraseProtection(bool passphrase_protection)
storage.passphrase_protection = passphrase_protection;
}
bool storage_hasPassphraseProtection(void)
{
return storage.has_passphrase_protection && storage.passphrase_protection;
}
void storage_setHomescreen(const uint8_t *data, uint32_t size)
{
if (data && size == 1024) {
@ -446,6 +451,32 @@ const uint8_t *storage_getHomescreen(void)
return (storage.has_homescreen && storage.homescreen.size == 1024) ? storage.homescreen.bytes : 0;
}
void storage_setMnemonic(const char *mnemonic)
{
storage.has_mnemonic = true;
strlcpy(storage.mnemonic, mnemonic, sizeof(storage.mnemonic));
}
bool storage_hasNode(void)
{
return storageRom->has_node;
}
const HDNode *storage_getNode(void)
{
return storageRom->has_node ? (const HDNode *)&storageRom->node : 0;
}
bool storage_hasMnemonic(void)
{
return storageRom->has_mnemonic;
}
const char *storage_getMnemonic(void)
{
return storage.has_mnemonic ? storage.mnemonic : 0;
}
/* Check whether mnemonic matches storage. The mnemonic must be
* a null-terminated string.
*/
@ -498,6 +529,11 @@ void storage_setPin(const char *pin)
sessionPinCached = false;
}
const char *storage_getPin(void)
{
return storageRom->has_pin ? storageRom->pin : 0;
}
void session_cachePassphrase(const char *passphrase)
{
strlcpy(sessionPassphrase, passphrase, sizeof(sessionPassphrase));
@ -599,11 +635,28 @@ bool storage_isInitialized(void)
return storage.has_node || storage.has_mnemonic;
}
bool storage_isImported(void)
{
return storage.has_imported && storage.imported;
}
void storage_setImported(bool imported)
{
storage.has_imported = true;
storage.imported = imported;
}
bool storage_needsBackup(void)
{
return storage.has_needs_backup && storage.needs_backup;
}
void storage_setNeedsBackup(bool needs_backup)
{
storage.has_needs_backup = true;
storage.needs_backup = needs_backup;
}
void storage_applyFlags(uint32_t flags)
{
if ((storage.flags | flags) == storage.flags) {

14
firmware/storage.h
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@ -44,6 +44,7 @@ const char *storage_getLanguage(void);
void storage_setLanguage(const char *lang);
void storage_setPassphraseProtection(bool passphrase_protection);
bool storage_hasPassphraseProtection(void);
const uint8_t *storage_getHomescreen(void);
void storage_setHomescreen(const uint8_t *data, uint32_t size);
@ -51,10 +52,17 @@ void storage_setHomescreen(const uint8_t *data, uint32_t size);
void session_cachePassphrase(const char *passphrase);
bool session_isPassphraseCached(void);
void storage_setMnemonic(const char *mnemonic);
bool storage_containsMnemonic(const char *mnemonic);
bool storage_hasMnemonic(void);
const char *storage_getMnemonic(void);
bool storage_hasNode(void);
const HDNode *storage_getNode(void);
bool storage_containsPin(const char *pin);
bool storage_hasPin(void);
const char *storage_getPin(void);
void storage_setPin(const char *pin);
void session_cachePin(void);
bool session_isPinCached(void);
@ -68,15 +76,17 @@ void storage_setU2FCounter(uint32_t u2fcounter);
bool storage_isInitialized(void);
bool storage_isImported(void);
void storage_setImported(bool imported);
bool storage_needsBackup(void);
void storage_setNeedsBackup(bool needs_backup);
void storage_applyFlags(uint32_t flags);
uint32_t storage_getFlags(void);
void storage_wipe(void);
extern Storage storage;
extern char storage_uuid_str[25];
#endif

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