99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
#ifdef HAVE_NFT_SUPPORT
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#include "erc721_plugin.h"
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#include "plugin_utils.h"
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#include "eth_plugin_internal.h"
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static void handle_approve(ethPluginProvideParameter_t *msg, erc721_context_t *context) {
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switch (context->next_param) {
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case OPERATOR:
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copy_address(context->address, msg->parameter, sizeof(context->address));
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context->next_param = TOKEN_ID;
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break;
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case TOKEN_ID:
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copy_parameter(context->tokenId, msg->parameter, sizeof(context->tokenId));
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context->next_param = NONE;
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break;
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default:
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PRINTF("Unhandled parameter offset\n");
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msg->result = ETH_PLUGIN_RESULT_ERROR;
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break;
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}
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}
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// `strict` will set msg->result to ERROR if parsing continues after `TOKEN_ID` has been parsed.
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static void handle_transfer(ethPluginProvideParameter_t *msg,
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erc721_context_t *context,
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bool strict) {
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switch (context->next_param) {
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case FROM:
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context->next_param = TO;
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break;
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case TO:
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copy_address(context->address, msg->parameter, sizeof(context->address));
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context->next_param = TOKEN_ID;
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break;
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case TOKEN_ID:
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copy_parameter(context->tokenId, msg->parameter, sizeof(context->tokenId));
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context->next_param = NONE;
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break;
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default:
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if (strict) {
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PRINTF("Param %d not supported\n", context->next_param);
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msg->result = ETH_PLUGIN_RESULT_ERROR;
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}
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break;
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}
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}
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static void handle_approval_for_all(ethPluginProvideParameter_t *msg, erc721_context_t *context) {
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switch (context->next_param) {
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case OPERATOR:
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context->next_param = APPROVED;
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copy_address(context->address, msg->parameter, sizeof(context->address));
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break;
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case APPROVED:
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context->next_param = NONE;
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context->approved = msg->parameter[PARAMETER_LENGTH - 1];
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break;
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default:
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PRINTF("Param %d not supported\n", context->next_param);
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msg->result = ETH_PLUGIN_RESULT_ERROR;
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break;
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}
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}
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void handle_provide_parameter_721(void *parameters) {
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ethPluginProvideParameter_t *msg = (ethPluginProvideParameter_t *) parameters;
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erc721_context_t *context = (erc721_context_t *) msg->pluginContext;
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PRINTF("erc721 plugin provide parameter %d %.*H\n",
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msg->parameterOffset,
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PARAMETER_LENGTH,
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msg->parameter);
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msg->result = ETH_PLUGIN_RESULT_SUCCESSFUL;
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switch (context->selectorIndex) {
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case APPROVE:
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handle_approve(msg, context);
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break;
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case SAFE_TRANSFER:
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case TRANSFER:
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handle_transfer(msg, context, true);
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break;
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case SAFE_TRANSFER_DATA:
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// Set `strict` to `false` because additional data might be present.
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handle_transfer(msg, context, false);
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break;
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case SET_APPROVAL_FOR_ALL:
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handle_approval_for_all(msg, context);
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break;
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default:
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PRINTF("Selector index %d not supported\n", context->selectorIndex);
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msg->result = ETH_PLUGIN_RESULT_ERROR;
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break;
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}
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}
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#endif // HAVE_NFT_SUPPORT
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