NBGL GCS UI implementation

Author: apaillier-ledger

glyphs/review_info_button.gif

@@ -1,9 +1,235 @@
 #ifdef HAVE_GENERIC_TX_PARSER
 
-void ui_gcs(void) {
+#include <string.h>
+#include "ui_nbgl.h"
+#include "gtp_tx_info.h"
+#include "gtp_field_table.h"
+#include "mem.h"
+#include "mem_utils.h"
+#include "network.h"
+#include "ui_callbacks.h"
+#include "feature_signTx.h"
+#include "apdu_constants.h"
+
+static nbgl_layoutTagValueList_t g_pair_list;
+static size_t g_alloc_size;
+
+static void review_choice(bool confirm) {
+    if (confirm) {
+        io_seproxyhal_touch_tx_ok();
+        nbgl_useCaseReviewStatus(STATUS_TYPE_TRANSACTION_SIGNED, ui_idle);
+    } else {
+        io_seproxyhal_touch_tx_cancel();
+        nbgl_useCaseReviewStatus(STATUS_TYPE_TRANSACTION_REJECTED, ui_idle);
+    }
+}
+
+static char *_strdup(const char *src) {
+    char *dst;
+    size_t length = strlen(src) + 1;
+
+    if ((dst = mem_alloc(length)) != NULL) {
+        memmove(dst, src, length);
+    }
+    return dst;
+}
+
+static bool cleanup_on_error(const void *mem_before) {
+    mem_dealloc(mem_alloc(0) - mem_before);
+    return false;
+}
+
+#define MAX_INFO_COUNT 3
+
+static bool prepare_infos(nbgl_contentInfoList_t *infos) {
+    char *tmp_buf = strings.tmp.tmp;
+    size_t tmp_buf_size = sizeof(strings.tmp.tmp);
+    size_t off;
+    uint8_t count = 0;
+    const char **keys;
+    const char **values;
+    nbgl_contentValueExt_t *extensions;
+    const char *value;
+    int contract_idx = -1;
+
+    if (((keys = mem_alloc_and_align(sizeof(*keys) * MAX_INFO_COUNT, __alignof__(*keys))) ==
+         NULL) ||
+        ((values = mem_alloc_and_align(sizeof(*values) * MAX_INFO_COUNT, __alignof__(*values))) ==
+         NULL)) {
+        return false;
+    }
+    if ((value = get_creator_legal_name()) != NULL) {
+        snprintf(tmp_buf, tmp_buf_size, "Contract owner");
+        if ((keys[count] = _strdup(tmp_buf)) == NULL) {
+            return false;
+        }
+        snprintf(tmp_buf, tmp_buf_size, "%s", value);
+        if ((value = get_creator_url()) != NULL) {
+            off = strlen(tmp_buf);
+            snprintf(tmp_buf + off, tmp_buf_size - off, "\n%s", value);
+        }
+        if ((values[count] = _strdup(tmp_buf)) == NULL) {
+            return false;
+        }
+        count += 1;
+    }
+
+    if ((value = get_contract_name()) != NULL) {
+        snprintf(tmp_buf, tmp_buf_size, "Contract");
+        if ((keys[count] = _strdup(tmp_buf)) == NULL) {
+            return false;
+        }
+        snprintf(tmp_buf, tmp_buf_size, "%s", value);
+        if ((values[count] = _strdup(tmp_buf)) == NULL) {
+            return false;
+        }
+        contract_idx = count;
+        count += 1;
+    }
+
+    if ((value = get_deploy_date()) != NULL) {
+        snprintf(tmp_buf, tmp_buf_size, "Deployed on");
+        if ((keys[count] = _strdup(tmp_buf)) == NULL) {
+            return false;
+        }
+        snprintf(tmp_buf, tmp_buf_size, "%s", value);
+        if ((values[count] = _strdup(tmp_buf)) == NULL) {
+            return false;
+        }
+        count += 1;
+    }
+
+    if ((extensions = mem_alloc_and_align(sizeof(*extensions) * count, __alignof__(*extensions))) ==
+        NULL) {
+        return false;
+    }
+    explicit_bzero(extensions, sizeof(*extensions) * count);
+
+    if (contract_idx != -1) {
+        if (!getEthDisplayableAddress((uint8_t *) get_contract_addr(),
+                                      tmp_buf,
+                                      tmp_buf_size,
+                                      chainConfig->chainId)) {
+            return false;
+        }
+        if ((extensions[contract_idx].title = _strdup(tmp_buf)) == NULL) {
+            return false;
+        }
+        // Etherscan only for mainnet
+        if (get_tx_chain_id() == ETHEREUM_MAINNET_CHAINID) {
+            if ((extensions[contract_idx].explanation = _strdup("Scan to view on Etherscan")) ==
+                NULL) {
+                return false;
+            }
+            snprintf(tmp_buf,
+                     tmp_buf_size,
+                     "https://etherscan.io/address/%s",
+                     extensions[contract_idx].title);
+            if ((extensions[contract_idx].fullValue = _strdup(tmp_buf)) == NULL) {
+                return false;
+            }
+        } else {
+            extensions[contract_idx].fullValue = extensions[contract_idx].title;
+        }
+        extensions[contract_idx].aliasType = QR_CODE_ALIAS;
+    }
+
+    infos->nbInfos = count;
+    infos->infoTypes = keys;
+    infos->infoContents = values;
+    infos->infoExtensions = extensions;
+    infos->withExtensions = true;
+    return true;
+}
+
+bool ui_gcs(void) {
+    char *tmp_buf = strings.tmp.tmp;
+    size_t tmp_buf_size = sizeof(strings.tmp.tmp);
+    size_t off;
+    const char *review_title;
+    const char *sign_title;
+    nbgl_contentTagValue_t *pairs;
+    s_field_table_entry entry;
+    bool show_network;
+    nbgl_tipBox_t tip_box;
+    const void *mem_before = mem_alloc(0);
+
+    snprintf(tmp_buf, tmp_buf_size, "Review transaction to %s", get_operation_type());
+    if ((review_title = _strdup(tmp_buf)) == NULL) {
+        return cleanup_on_error(mem_before);
+    }
+    snprintf(tmp_buf, tmp_buf_size, "Sign transaction to %s?", get_operation_type());
+    if ((sign_title = _strdup(tmp_buf)) == NULL) {
+        return cleanup_on_error(mem_before);
+    }
+    explicit_bzero(&tip_box, sizeof(tip_box));
+    tip_box.icon = &C_review_info_button;
+    tip_box.text = NULL;
+    tip_box.modalTitle = "Contract information";
+    tip_box.type = INFOS_LIST;
+    if (!prepare_infos(&tip_box.infos)) {
+        return cleanup_on_error(mem_before);
+    }
+    snprintf(tmp_buf, tmp_buf_size, "Interaction with a\nsmart contract");
+    off = strlen(tmp_buf);
+    if (get_creator_name()) {
+        snprintf(tmp_buf + off, tmp_buf_size - off, " from:\n%s", get_creator_name());
+    }
+    if ((tip_box.text = _strdup(tmp_buf)) == NULL) {
+        return cleanup_on_error(mem_before);
+    }
+
+    g_pair_list.nbPairs = field_table_size() + 1;
+    show_network = get_tx_chain_id() != chainConfig->chainId;
+    if (show_network) {
+        g_pair_list.nbPairs += 1;
+    }
+    if ((pairs = mem_alloc_and_align(sizeof(*pairs) * g_pair_list.nbPairs, __alignof__(*pairs))) ==
+        NULL) {
+        return cleanup_on_error(mem_before);
+    }
+    explicit_bzero(pairs, sizeof(*pairs) * g_pair_list.nbPairs);
+
+    for (int i = 0; i < (int) field_table_size(); ++i) {
+        if (!get_from_field_table(i, &entry)) {
+            return cleanup_on_error(mem_before);
+        }
+        pairs[i].item = entry.key;
+        pairs[i].value = entry.value;
+    }
+
+    if (show_network) {
+        pairs[g_pair_list.nbPairs - 2].item = _strdup("Network");
+        if (get_network_as_string(tmp_buf, tmp_buf_size) != APDU_RESPONSE_OK) {
+            return cleanup_on_error(mem_before);
+        }
+        pairs[g_pair_list.nbPairs - 2].value = _strdup(tmp_buf);
+    }
+
+    pairs[g_pair_list.nbPairs - 1].item = _strdup("Max fees");
+    if (max_transaction_fee_to_string(&tmpContent.txContent.gasprice,
+                                      &tmpContent.txContent.startgas,
+                                      tmp_buf,
+                                      tmp_buf_size) == false) {
+        PRINTF("Error: Could not format the max fees!\n");
+    }
+    pairs[g_pair_list.nbPairs - 1].value = _strdup(tmp_buf);
+
+    g_pair_list.pairs = pairs;
+    nbgl_useCaseAdvancedReview(TYPE_TRANSACTION,
+                               &g_pair_list,
+                               get_tx_icon(),
+                               review_title,
+                               NULL,
+                               sign_title,
+                               &tip_box,
+                               review_choice);
+    g_alloc_size = mem_alloc(0) - mem_before;
+    return true;
 }
 
 void ui_gcs_cleanup(void) {
+    mem_dealloc(g_alloc_size);
 }
 
 #endif  // HAVE_GENERIC_TX_PARSER