Merge pull request #579 from LedgerHQ/fbe/remove_token_management_fro…

…m_main_rebased

Remove token management from main

src/eth_plugin_handler.c

@@ -52,17 +52,17 @@ void eth_plugin_prepare_query_contract_UI(ethQueryContractUI_t *queryContractUI,
     memset((uint8_t *) queryContractUI, 0, sizeof(ethQueryContractUI_t));
 
     // If no extra information was found, set the pointer to NULL
-    if (NO_EXTRA_INFO(tmpCtx, 1)) {
+    if (NO_EXTRA_INFO(tmpCtx, 0)) {
         queryContractUI->item1 = NULL;
     } else {
-        queryContractUI->item1 = &tmpCtx.transactionContext.extraInfo[1];
+        queryContractUI->item1 = &tmpCtx.transactionContext.extraInfo[0];
     }
 
     // If no extra information was found, set the pointer to NULL
-    if (NO_EXTRA_INFO(tmpCtx, 0)) {
+    if (NO_EXTRA_INFO(tmpCtx, 1)) {
         queryContractUI->item2 = NULL;
     } else {
-        queryContractUI->item2 = &tmpCtx.transactionContext.extraInfo[0];
+        queryContractUI->item2 = &tmpCtx.transactionContext.extraInfo[1];
     }
 
     queryContractUI->screenIndex = screenIndex;

src/eth_plugin_handler.h

@@ -6,7 +6,7 @@
 #define NO_EXTRA_INFO(ctx, idx) \
     (allzeroes(&(ctx.transactionContext.extraInfo[idx]), sizeof(extraInfo_t)))
 
-#define NO_NFT_METADATA (NO_EXTRA_INFO(tmpCtx, 1))
+#define NO_NFT_METADATA (NO_EXTRA_INFO(tmpCtx, 0))
 
 void eth_plugin_prepare_init(ethPluginInitContract_t *init,
                              const uint8_t *selector,

src/main.c

@@ -32,6 +32,7 @@
 #include "challenge.h"
 #include "domain_name.h"
 #include "crypto_helpers.h"
+#include "manage_asset_info.h"
 
 unsigned char G_io_seproxyhal_spi_buffer[IO_SEPROXYHAL_BUFFER_SIZE_B];
 
@@ -79,6 +80,7 @@ void reset_app_context() {
     eth2WithdrawalIndex = 0;
 #endif
     memset((uint8_t *) &tmpCtx, 0, sizeof(tmpCtx));
+    forget_known_assets();
     memset((uint8_t *) &txContext, 0, sizeof(txContext));
     memset((uint8_t *) &tmpContent, 0, sizeof(tmpContent));
 }
@@ -114,22 +116,6 @@ unsigned short io_exchange_al(unsigned char channel, unsigned short tx_len) {
     return 0;
 }
 
-extraInfo_t *getKnownToken(const uint8_t *contractAddress) {
-    union extraInfo_t *currentItem = NULL;
-    // Works for ERC-20 & NFT tokens since both structs in the union have the
-    // contract address aligned
-    for (uint8_t i = 0; i < MAX_ITEMS; i++) {
-        currentItem = (union extraInfo_t *) &tmpCtx.transactionContext.extraInfo[i].token;
-        if (tmpCtx.transactionContext.tokenSet[i] &&
-            (memcmp(currentItem->token.address, contractAddress, ADDRESS_LENGTH) == 0)) {
-            PRINTF("Token found at index %d\n", i);
-            return currentItem;
-        }
-    }
-
-    return NULL;
-}
-
 const uint8_t *parseBip32(const uint8_t *dataBuffer, uint8_t *dataLength, bip32_path_t *bip32) {
     if (*dataLength < 1) {
         PRINTF("Invalid data\n");
@@ -171,7 +157,7 @@ void handleApdu(unsigned int *flags, unsigned int *tx) {
 
             switch (G_io_apdu_buffer[OFFSET_INS]) {
                 case INS_GET_PUBLIC_KEY:
-                    memset(tmpCtx.transactionContext.tokenSet, 0, MAX_ITEMS);
+                    forget_known_assets();
                     handleGetPublicKey(G_io_apdu_buffer[OFFSET_P1],
                                        G_io_apdu_buffer[OFFSET_P2],
                                        G_io_apdu_buffer + OFFSET_CDATA,
@@ -246,7 +232,7 @@ void handleApdu(unsigned int *flags, unsigned int *tx) {
                     break;
 
                 case INS_SIGN_PERSONAL_MESSAGE:
-                    memset(tmpCtx.transactionContext.tokenSet, 0, MAX_ITEMS);
+                    forget_known_assets();
                     *flags |= IO_ASYNCH_REPLY;
                     if (!handleSignPersonalMessage(G_io_apdu_buffer[OFFSET_P1],
                                                    G_io_apdu_buffer[OFFSET_P2],
@@ -259,7 +245,7 @@ void handleApdu(unsigned int *flags, unsigned int *tx) {
                 case INS_SIGN_EIP_712_MESSAGE:
                     switch (G_io_apdu_buffer[OFFSET_P2]) {
                         case P2_EIP712_LEGACY_IMPLEM:
-                            memset(tmpCtx.transactionContext.tokenSet, 0, MAX_ITEMS);
+                            forget_known_assets();
                             handleSignEIP712Message_v0(G_io_apdu_buffer[OFFSET_P1],
                                                        G_io_apdu_buffer[OFFSET_P2],
                                                        G_io_apdu_buffer + OFFSET_CDATA,
@@ -281,7 +267,7 @@ void handleApdu(unsigned int *flags, unsigned int *tx) {
 #ifdef HAVE_ETH2
 
                 case INS_GET_ETH2_PUBLIC_KEY:
-                    memset(tmpCtx.transactionContext.tokenSet, 0, MAX_ITEMS);
+                    forget_known_assets();
                     handleGetEth2PublicKey(G_io_apdu_buffer[OFFSET_P1],
                                            G_io_apdu_buffer[OFFSET_P2],
                                            G_io_apdu_buffer + OFFSET_CDATA,
@@ -548,7 +534,6 @@ __attribute__((noreturn)) void coin_main(libargs_t *args) {
     }
 
     reset_app_context();
-    tmpCtx.transactionContext.currentItemIndex = 0;
 
     for (;;) {
         UX_INIT();

src/manage_asset_info.c

@@ -0,0 +1,48 @@
+#include "manage_asset_info.h"
+#include "shared_context.h"
+
+void forget_known_assets(void) {
+    memset(tmpCtx.transactionContext.assetSet, false, MAX_ASSETS);
+    tmpCtx.transactionContext.currentAssetIndex = 0;
+}
+
+static extraInfo_t *get_asset_info(uint8_t index) {
+    if (index >= MAX_ASSETS) {
+        return NULL;
+    }
+    return &tmpCtx.transactionContext.extraInfo[index];
+}
+
+static bool asset_info_is_set(uint8_t index) {
+    if (index >= MAX_ASSETS) {
+        return false;
+    }
+    return tmpCtx.transactionContext.assetSet[index];
+}
+
+extraInfo_t *get_asset_info_by_addr(const uint8_t *contractAddress) {
+    // Works for ERC-20 & NFT tokens since both structs in the union have the
+    // contract address aligned
+    for (uint8_t i = 0; i < MAX_ASSETS; i++) {
+        extraInfo_t *currentItem = get_asset_info(i);
+        if (asset_info_is_set(i) &&
+            (memcmp(currentItem->token.address, contractAddress, ADDRESS_LENGTH) == 0)) {
+            PRINTF("Token found at index %d\n", i);
+            return currentItem;
+        }
+    }
+
+    return NULL;
+}
+
+extraInfo_t *get_current_asset_info(void) {
+    return get_asset_info(tmpCtx.transactionContext.currentAssetIndex);
+}
+
+void validate_current_asset_info(void) {
+    // mark it as set
+    tmpCtx.transactionContext.assetSet[tmpCtx.transactionContext.currentAssetIndex] = true;
+    // increment index
+    tmpCtx.transactionContext.currentAssetIndex =
+        (tmpCtx.transactionContext.currentAssetIndex + 1) % MAX_ASSETS;
+}

src/manage_asset_info.h

@@ -0,0 +1,8 @@
+#include "shared_context.h"
+#include "common_utils.h"
+#include "asset_info.h"
+
+void forget_known_assets(void);
+extraInfo_t *get_asset_info_by_addr(const uint8_t *contractAddress);
+extraInfo_t *get_current_asset_info(void);
+void validate_current_asset_info(void);

src/shared_context.h

@@ -22,6 +22,8 @@
 
 #define N_storage (*(volatile internalStorage_t *) PIC(&N_storage_real))
 
+#define MAX_ASSETS MAX_ITEMS  // TODO: Temporary, remove once plugin SDK is updated
+
 typedef struct bip32_path_t {
     uint8_t length;
     uint32_t path[MAX_BIP32_PATH];
@@ -77,9 +79,9 @@ typedef struct publicKeyContext_t {
 typedef struct transactionContext_t {
     bip32_path_t bip32;
     uint8_t hash[INT256_LENGTH];
-    union extraInfo_t extraInfo[MAX_ITEMS];
-    uint8_t tokenSet[MAX_ITEMS];
-    uint8_t currentItemIndex;
+    union extraInfo_t extraInfo[MAX_ASSETS];
+    bool assetSet[MAX_ASSETS];
+    uint8_t currentAssetIndex;
 } transactionContext_t;
 
 typedef struct messageSigningContext_t {

src/ui_callbacks.h

@@ -1,5 +1,4 @@
-#ifndef _UI_CALLBACKS_H_
-#define _UI_CALLBACKS_H_
+#pragma once
 
 #include "shared_context.h"
 #include "ux.h"
@@ -26,6 +25,3 @@ void ui_warning_contract_data(void);
 
 void io_seproxyhal_send_status(uint32_t sw);
 void finalizeParsing(bool direct);
-extraInfo_t *getKnownToken(const uint8_t *contractAddress);
-
-#endif  // _UI_CALLBACKS_H_

src_features/provideErc20TokenInformation/cmd_provideTokenInfo.c

@@ -5,6 +5,7 @@
 #include "os_io_seproxyhal.h"
 #include "extra_tokens.h"
 #include "network.h"
+#include "manage_asset_info.h"
 
 #ifdef HAVE_CONTRACT_NAME_IN_DESCRIPTOR
 
@@ -26,10 +27,7 @@ void handleProvideErc20TokenInformation(uint8_t p1,
 
     cx_sha256_init(&sha256);
 
-    tmpCtx.transactionContext.currentItemIndex =
-        (tmpCtx.transactionContext.currentItemIndex + 1) % MAX_ITEMS;
-    tokenDefinition_t *token =
-        &tmpCtx.transactionContext.tokens[tmpCtx.transactionContext.currentItemIndex];
+    tokenDefinition_t *token = &get_current_asset_info()->token;
 
     if (dataLength < 1) {
         THROW(0x6A80);
@@ -95,7 +93,7 @@ void handleProvideErc20TokenInformation(uint8_t p1,
         THROW(0x6A80);
 #endif
     }
-    tmpCtx.transactionContext.tokenSet[tmpCtx.transactionContext.currentItemIndex] = 1;
+    validate_current_asset_info();
     THROW(0x9000);
 }
 
@@ -117,12 +115,9 @@ void handleProvideErc20TokenInformation(uint8_t p1,
     uint8_t hash[INT256_LENGTH];
     cx_ecfp_public_key_t tokenKey;
 
-    tmpCtx.transactionContext.currentItemIndex =
-        (tmpCtx.transactionContext.currentItemIndex + 1) % MAX_ITEMS;
-    tokenDefinition_t *token =
-        &tmpCtx.transactionContext.extraInfo[tmpCtx.transactionContext.currentItemIndex].token;
+    tokenDefinition_t *token = &get_current_asset_info()->token;
 
-    PRINTF("Provisioning currentItemIndex %d\n", tmpCtx.transactionContext.currentItemIndex);
+    PRINTF("Provisioning currentAssetIndex %d\n", tmpCtx.transactionContext.currentAssetIndex);
 
     if (dataLength < 1) {
         THROW(0x6A80);
@@ -143,10 +138,11 @@ void handleProvideErc20TokenInformation(uint8_t p1,
     memmove(token->address, workBuffer + offset, 20);
     offset += 20;
     dataLength -= 20;
-    // TODO: Handle 64-bit long chain IDs
+    // TODO: 4 bytes for this is overkill
     token->decimals = U4BE(workBuffer, offset);
     offset += 4;
     dataLength -= 4;
+    // TODO: Handle 64-bit long chain IDs
     chain_id = U4BE(workBuffer, offset);
     if (!app_compatible_with_chain_id(&chain_id)) {
         UNSUPPORTED_CHAIN_ID_MSG(chain_id);
@@ -183,7 +179,7 @@ void handleProvideErc20TokenInformation(uint8_t p1,
         }
     }
 
-    tmpCtx.transactionContext.tokenSet[tmpCtx.transactionContext.currentItemIndex] = 1;
+    validate_current_asset_info();
     THROW(0x9000);
 }
 

src_features/provideNFTInformation/cmd_provideNFTInfo.c

@@ -8,6 +8,7 @@
 #include "os_io_seproxyhal.h"
 #include "network.h"
 #include "public_keys.h"
+#include "manage_asset_info.h"
 
 #define TYPE_SIZE        1
 #define VERSION_SIZE     1
@@ -56,12 +57,9 @@ void handleProvideNFTInformation(uint8_t p1,
         PRINTF("NFT metadata provided without proper plugin loaded!\n");
         THROW(0x6985);
     }
-    tmpCtx.transactionContext.currentItemIndex =
-        (tmpCtx.transactionContext.currentItemIndex + 1) % MAX_ITEMS;
-    nftInfo_t *nft =
-        &tmpCtx.transactionContext.extraInfo[tmpCtx.transactionContext.currentItemIndex].nft;
+    nftInfo_t *nft = &get_current_asset_info()->nft;
 
-    PRINTF("Provisioning currentItemIndex %d\n", tmpCtx.transactionContext.currentItemIndex);
+    PRINTF("Provisioning currentAssetIndex %d\n", tmpCtx.transactionContext.currentAssetIndex);
 
     size_t offset = 0;
 
@@ -201,7 +199,7 @@ void handleProvideNFTInformation(uint8_t p1,
 #endif
     }
 
-    tmpCtx.transactionContext.tokenSet[tmpCtx.transactionContext.currentItemIndex] = 1;
+    validate_current_asset_info();
     THROW(0x9000);
 }
 

src_features/signMessageEIP712/ui_logic.c

@@ -15,6 +15,7 @@
 #include "apdu_constants.h"  // APDU response codes
 #include "typed_data.h"
 #include "commands_712.h"
+#include "manage_asset_info.h"
 #include "common_ui.h"
 #include "domain_name.h"
 #include "uint_common.h"
@@ -192,16 +193,9 @@ static void ui_712_format_str(const uint8_t *const data, uint8_t length) {
  * @return the ticker name if found, \ref NULL otherwise
  */
 static const char *get_address_token_ticker(const uint8_t *addr) {
-    tokenDefinition_t *token;
-
-    // Loop over the received token information
-    for (uint8_t token_idx = 0; token_idx < MAX_ITEMS; ++token_idx) {
-        if (tmpCtx.transactionContext.tokenSet[token_idx] == 1) {
-            token = &tmpCtx.transactionContext.extraInfo[token_idx].token;
-            if (memcmp(token->address, addr, ADDRESS_LENGTH) == 0) {
-                return token->ticker;
-            }
-        }
+    extraInfo_t *extra_info = get_asset_info_by_addr(addr);
+    if (extra_info != NULL) {
+        return extra_info->token.ticker;
     }
     return NULL;
 }

src_features/signTx/logic_signTx.c

@@ -10,6 +10,7 @@
 #include "apdu_constants.h"
 #include "crypto_helpers.h"
 #include "format.h"
+#include "manage_asset_info.h"
 
 #define ERR_SILENT_MODE_CHECK_FAILED 0x6001
 
@@ -366,14 +367,14 @@ __attribute__((noinline)) static bool finalize_parsing_helper(bool direct, bool
         if ((pluginFinalize.tokenLookup1 != NULL) || (pluginFinalize.tokenLookup2 != NULL)) {
             if (pluginFinalize.tokenLookup1 != NULL) {
                 PRINTF("Lookup1: %.*H\n", ADDRESS_LENGTH, pluginFinalize.tokenLookup1);
-                pluginProvideInfo.item1 = getKnownToken(pluginFinalize.tokenLookup1);
+                pluginProvideInfo.item1 = get_asset_info_by_addr(pluginFinalize.tokenLookup1);
                 if (pluginProvideInfo.item1 != NULL) {
                     PRINTF("Token1 ticker: %s\n", pluginProvideInfo.item1->token.ticker);
                 }
             }
             if (pluginFinalize.tokenLookup2 != NULL) {
                 PRINTF("Lookup2: %.*H\n", ADDRESS_LENGTH, pluginFinalize.tokenLookup2);
-                pluginProvideInfo.item2 = getKnownToken(pluginFinalize.tokenLookup2);
+                pluginProvideInfo.item2 = get_asset_info_by_addr(pluginFinalize.tokenLookup2);
                 if (pluginProvideInfo.item2 != NULL) {
                     PRINTF("Token2 ticker: %s\n", pluginProvideInfo.item2->token.ticker);
                 }