113 lines
2.7 KiB
C
113 lines
2.7 KiB
C
#include <stdlib.h>
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#include <stdbool.h>
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#include "ui_logic.h"
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#include "mem.h"
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#include "mem_utils.h"
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#include "os_io.h"
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#include "ux_flow_engine.h"
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#include "ui_flow_712.h"
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#include "shared_context.h"
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#include "eip712.h" // get_struct_name
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static t_ui_context *ui_ctx = NULL;
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/**
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* Called on the intermediate dummy screen between the dynamic step
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* && the approve/reject screen
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*/
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void ui_712_next_field(void)
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{
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if (!ui_ctx->end_reached)
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{
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// reply to previous APDU
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G_io_apdu_buffer[0] = 0x90;
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G_io_apdu_buffer[1] = 0x00;
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io_exchange(CHANNEL_APDU | IO_RETURN_AFTER_TX, 2);
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}
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else
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{
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if (ui_ctx->pos == UI_712_POS_REVIEW)
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{
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ux_flow_next();
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ui_ctx->pos = UI_712_POS_END;
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}
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else
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{
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ux_flow_prev();
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ui_ctx->pos = UI_712_POS_REVIEW;
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}
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}
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}
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/**
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* Used to notify of a new struct to review (domain or message)
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*/
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void ui_712_new_root_struct(const void *const struct_ptr)
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{
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strcpy(strings.tmp.tmp2, "Review struct");
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const char *struct_name;
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uint8_t struct_name_length;
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if ((struct_name = get_struct_name(struct_ptr, &struct_name_length)) != NULL)
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{
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strncpy(strings.tmp.tmp, struct_name, struct_name_length);
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strings.tmp.tmp[struct_name_length] = '\0';
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}
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if (!ui_ctx->shown)
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{
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ux_flow_init(0, ux_712_flow, NULL);
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ui_ctx->shown = true;
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}
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else
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{
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ux_flow_prev();
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}
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}
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/**
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* Used to notify of a new field to review in the current struct (key + value)
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*
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* @param[in] field_ptr pointer to the new struct field
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* @param[in] data pointer to the field's raw value
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* @param[in] length field's raw value byte-length
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*/
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void ui_712_new_field(const void *const field_ptr, const uint8_t *const data, uint8_t length)
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{
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const char *key;
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uint8_t key_len;
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if ((key = get_struct_field_keyname(field_ptr, &key_len)) != NULL)
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{
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strncpy(strings.tmp.tmp2, key, MIN(key_len, sizeof(strings.tmp.tmp2) - 1));
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strings.tmp.tmp2[key_len] = '\0';
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}
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// TODO: Encode data as string based on data type
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(void)data;
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(void)length;
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strcpy(strings.tmp.tmp, "Field value");
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ux_flow_prev();
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}
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/**
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* Used to signal that we are done with reviewing the structs and we can now have
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* the option to approve or reject the signature
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*/
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void ui_712_end_sign(void)
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{
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ui_ctx->end_reached = true;
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ui_712_next_field();
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}
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/**
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* Initializes the UI context structure in memory
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*/
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bool ui_712_init(void)
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{
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if ((ui_ctx = MEM_ALLOC_AND_ALIGN_TO_TYPE(sizeof(*ui_ctx), *ui_ctx)))
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{
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ui_ctx->shown = false;
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ui_ctx->end_reached = false;
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ui_ctx->pos = UI_712_POS_REVIEW;
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}
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return ui_ctx != NULL;
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}
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