mirror of
https://github.com/skot/ESP-Miner.git
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338 lines
11 KiB
C
338 lines
11 KiB
C
/******************************************************************************
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* *
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* References:
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* 1. Stratum Protocol - [link](https://reference.cash/mining/stratum-protocol)
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*****************************************************************************/
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#include "stratum_api.h"
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#include "cJSON.h"
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#include "esp_log.h"
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#include "lwip/sockets.h"
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#include "utils.h"
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#include <stdio.h>
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#include <string.h>
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#define BUFFER_SIZE 1024
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static const char * TAG = "stratum_api";
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static char * json_rpc_buffer = NULL;
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static size_t json_rpc_buffer_size = 0;
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// A message ID that must be unique per request that expects a response.
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// For requests not expecting a response (called notifications), this is null.
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static int send_uid = 1;
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static void debug_stratum_tx(const char *);
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void STRATUM_V1_initialize_buffer()
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{
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json_rpc_buffer = malloc(BUFFER_SIZE);
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json_rpc_buffer_size = BUFFER_SIZE;
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memset(json_rpc_buffer, 0, BUFFER_SIZE);
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if (json_rpc_buffer == NULL) {
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printf("Error: Failed to allocate memory for buffer\n");
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exit(1);
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}
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}
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void cleanup_stratum_buffer()
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{
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free(json_rpc_buffer);
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}
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static void realloc_json_buffer(size_t len)
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{
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size_t old, new;
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old = strlen(json_rpc_buffer);
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new = old + len + 1;
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if (new < json_rpc_buffer_size) {
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return;
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}
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new = new + (BUFFER_SIZE - (new % BUFFER_SIZE));
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void * new_sockbuf = realloc(json_rpc_buffer, new);
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if (new_sockbuf == NULL) {
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fprintf(stderr, "Error: realloc failed in recalloc_sock()\n");
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esp_restart();
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}
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json_rpc_buffer = new_sockbuf;
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memset(json_rpc_buffer + old, 0, new - old);
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json_rpc_buffer_size = new;
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}
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char * STRATUM_V1_receive_jsonrpc_line(int sockfd)
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{
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if (json_rpc_buffer == NULL) {
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STRATUM_V1_initialize_buffer();
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}
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char *line, *tok = NULL;
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char recv_buffer[BUFFER_SIZE];
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int nbytes;
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size_t buflen = 0;
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if (!strstr(json_rpc_buffer, "\n")) {
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do {
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memset(recv_buffer, 0, BUFFER_SIZE);
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nbytes = recv(sockfd, recv_buffer, BUFFER_SIZE - 1, 0);
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if (nbytes == -1) {
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perror("recv");
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esp_restart();
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}
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realloc_json_buffer(nbytes);
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strncat(json_rpc_buffer, recv_buffer, nbytes);
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} while (!strstr(json_rpc_buffer, "\n"));
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}
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buflen = strlen(json_rpc_buffer);
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tok = strtok(json_rpc_buffer, "\n");
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line = strdup(tok);
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int len = strlen(line);
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if (buflen > len + 1)
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memmove(json_rpc_buffer, json_rpc_buffer + len + 1, buflen - len + 1);
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else
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strcpy(json_rpc_buffer, "");
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return line;
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}
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void STRATUM_V1_parse(StratumApiV1Message * message, const char * stratum_json)
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{
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cJSON * json = cJSON_Parse(stratum_json);
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cJSON * id_json = cJSON_GetObjectItem(json, "id");
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int16_t parsed_id = -1;
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if (id_json != NULL && cJSON_IsNumber(id_json)) {
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parsed_id = id_json->valueint;
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}
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message->message_id = parsed_id;
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cJSON * method_json = cJSON_GetObjectItem(json, "method");
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stratum_method result = STRATUM_UNKNOWN;
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if (method_json != NULL && cJSON_IsString(method_json)) {
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if (strcmp("mining.notify", method_json->valuestring) == 0) {
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result = MINING_NOTIFY;
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} else if (strcmp("mining.set_difficulty", method_json->valuestring) == 0) {
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result = MINING_SET_DIFFICULTY;
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} else if (strcmp("mining.set_version_mask", method_json->valuestring) == 0) {
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result = MINING_SET_VERSION_MASK;
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}
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} else {
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// parse results
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cJSON * result_json = cJSON_GetObjectItem(json, "result");
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if (result_json == NULL){
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message->response_success = false;
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}
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else if (cJSON_IsBool(result_json)) {
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result = STRATUM_RESULT;
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if (cJSON_IsTrue(result_json)) {
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message->response_success = true;
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}else{
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message->response_success = false;
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}
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} else {
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cJSON * mask = cJSON_GetObjectItem(result_json, "version-rolling.mask");
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if (mask != NULL) {
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result = STRATUM_RESULT_VERSION_MASK;
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message->version_mask = strtoul(mask->valuestring, NULL, 16);
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}
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}
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}
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message->method = result;
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if (message->method == MINING_NOTIFY) {
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mining_notify * new_work = malloc(sizeof(mining_notify));
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// new_work->difficulty = difficulty;
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cJSON * params = cJSON_GetObjectItem(json, "params");
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new_work->job_id = strdup(cJSON_GetArrayItem(params, 0)->valuestring);
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new_work->prev_block_hash = strdup(cJSON_GetArrayItem(params, 1)->valuestring);
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new_work->coinbase_1 = strdup(cJSON_GetArrayItem(params, 2)->valuestring);
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new_work->coinbase_2 = strdup(cJSON_GetArrayItem(params, 3)->valuestring);
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cJSON * merkle_branch = cJSON_GetArrayItem(params, 4);
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new_work->n_merkle_branches = cJSON_GetArraySize(merkle_branch);
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if (new_work->n_merkle_branches > MAX_MERKLE_BRANCHES) {
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printf("Too many Merkle branches.\n");
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abort();
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}
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new_work->merkle_branches = malloc(HASH_SIZE * new_work->n_merkle_branches);
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for (size_t i = 0; i < new_work->n_merkle_branches; i++) {
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hex2bin(cJSON_GetArrayItem(merkle_branch, i)->valuestring, new_work->merkle_branches + HASH_SIZE * i, HASH_SIZE * 2);
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}
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new_work->version = strtoul(cJSON_GetArrayItem(params, 5)->valuestring, NULL, 16);
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new_work->target = strtoul(cJSON_GetArrayItem(params, 6)->valuestring, NULL, 16);
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new_work->ntime = strtoul(cJSON_GetArrayItem(params, 7)->valuestring, NULL, 16);
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message->mining_notification = new_work;
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// params can be varible length
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int paramsLength = cJSON_GetArraySize(params);
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int value = cJSON_IsTrue(cJSON_GetArrayItem(params, paramsLength - 1));
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message->should_abandon_work = value;
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} else if (message->method == MINING_SET_DIFFICULTY) {
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cJSON * params = cJSON_GetObjectItem(json, "params");
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uint32_t difficulty = cJSON_GetArrayItem(params, 0)->valueint;
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message->new_difficulty = difficulty;
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} else if (message->method == MINING_SET_VERSION_MASK) {
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cJSON * params = cJSON_GetObjectItem(json, "params");
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uint32_t version_mask = strtoul(cJSON_GetArrayItem(params, 0)->valuestring, NULL, 16);
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message->version_mask = version_mask;
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}
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cJSON_Delete(json);
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}
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void STRATUM_V1_free_mining_notify(mining_notify * params)
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{
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free(params->job_id);
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free(params->prev_block_hash);
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free(params->coinbase_1);
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free(params->coinbase_2);
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free(params->merkle_branches);
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free(params);
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}
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int _parse_stratum_subscribe_result_message(const char * result_json_str, char ** extranonce, int * extranonce2_len)
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{
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cJSON * root = cJSON_Parse(result_json_str);
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if (root == NULL) {
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ESP_LOGE(TAG, "Unable to parse %s", result_json_str);
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return -1;
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}
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cJSON * result = cJSON_GetObjectItem(root, "result");
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if (result == NULL) {
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ESP_LOGE(TAG, "Unable to parse subscribe result %s", result_json_str);
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return -1;
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}
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cJSON * extranonce2_len_json = cJSON_GetArrayItem(result, 2);
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if (extranonce2_len_json == NULL) {
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ESP_LOGE(TAG, "Unable to parse extranonce2_len: %s", result->valuestring);
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return -1;
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}
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*extranonce2_len = extranonce2_len_json->valueint;
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cJSON * extranonce_json = cJSON_GetArrayItem(result, 1);
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if (extranonce_json == NULL) {
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ESP_LOGE(TAG, "Unable parse extranonce: %s", result->valuestring);
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return -1;
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}
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*extranonce = malloc(strlen(extranonce_json->valuestring) + 1);
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strcpy(*extranonce, extranonce_json->valuestring);
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cJSON_Delete(root);
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return 0;
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}
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int STRATUM_V1_subscribe(int socket, char ** extranonce, int * extranonce2_len, char * model)
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{
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// Subscribe
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char subscribe_msg[BUFFER_SIZE];
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sprintf(subscribe_msg, "{\"id\": %d, \"method\": \"mining.subscribe\", \"params\": [\"bitaxeHex/%s\"]}\n", send_uid++, model);
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debug_stratum_tx(subscribe_msg);
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write(socket, subscribe_msg, strlen(subscribe_msg));
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char * line;
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line = STRATUM_V1_receive_jsonrpc_line(socket);
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ESP_LOGI(TAG, "Received result %s", line);
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_parse_stratum_subscribe_result_message(line, extranonce, extranonce2_len);
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free(line);
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return 1;
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}
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int STRATUM_V1_suggest_difficulty(int socket, uint32_t difficulty)
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{
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char difficulty_msg[BUFFER_SIZE];
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sprintf(difficulty_msg, "{\"id\": %d, \"method\": \"mining.suggest_difficulty\", \"params\": [%ld]}\n", send_uid++, difficulty);
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debug_stratum_tx(difficulty_msg);
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write(socket, difficulty_msg, strlen(difficulty_msg));
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/* TODO: fix race condition with first mining.notify message
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char * line;
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line = STRATUM_V1_receive_jsonrpc_line(socket);
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ESP_LOGI(TAG, "Received result %s", line);
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free(line);
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*/
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return 1;
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}
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int STRATUM_V1_authenticate(int socket, const char * username, const char * pass)
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{
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char authorize_msg[BUFFER_SIZE];
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sprintf(authorize_msg, "{\"id\": %d, \"method\": \"mining.authorize\", \"params\": [\"%s\", \"%s\"]}\n", send_uid++, username,
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pass);
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debug_stratum_tx(authorize_msg);
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write(socket, authorize_msg, strlen(authorize_msg));
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return 1;
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}
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/// @param socket Socket to write to
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/// @param username The client’s user name.
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/// @param jobid The job ID for the work being submitted.
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/// @param ntime The hex-encoded time value use in the block header.
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/// @param extranonce_2 The hex-encoded value of extra nonce 2.
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/// @param nonce The hex-encoded nonce value to use in the block header.
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void STRATUM_V1_submit_share(int socket, const char * username, const char * jobid, const char * extranonce_2, const uint32_t ntime,
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const uint32_t nonce, const uint32_t version)
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{
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char submit_msg[BUFFER_SIZE];
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sprintf(submit_msg,
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"{\"id\": %d, \"method\": \"mining.submit\", \"params\": [\"%s\", \"%s\", \"%s\", \"%08lx\", \"%08lx\", \"%08lx\"]}\n",
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send_uid++, username, jobid, extranonce_2, ntime, nonce, version);
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debug_stratum_tx(submit_msg);
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write(socket, submit_msg, strlen(submit_msg));
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}
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void STRATUM_V1_configure_version_rolling(int socket, uint32_t * version_mask)
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{
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char configure_msg[BUFFER_SIZE * 2];
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sprintf(configure_msg,
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"{\"id\": %d, \"method\": \"mining.configure\", \"params\": [[\"version-rolling\"], {\"version-rolling.mask\": "
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"\"ffffffff\"}]}\n",
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send_uid++);
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ESP_LOGI(TAG, "tx: %s", configure_msg);
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write(socket, configure_msg, strlen(configure_msg));
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char * line = STRATUM_V1_receive_jsonrpc_line(socket);
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cJSON * json = cJSON_Parse(line);
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ESP_LOGI(TAG, "Received result %s", line);
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cJSON * result = cJSON_GetObjectItem(json, "result");
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if (result != NULL) {
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cJSON * version_rolling_enabled = cJSON_GetObjectItem(result, "version-rolling");
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if (cJSON_IsBool(version_rolling_enabled) && cJSON_IsTrue(version_rolling_enabled)) {
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cJSON * mask = cJSON_GetObjectItem(result, "version-rolling.mask");
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uint32_t version_mask = strtoul(mask->valuestring, NULL, 16);
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ESP_LOGI(TAG, "Set version mask: %08lx", version_mask);
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}
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}else{
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printf("configure_version result null\n");
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}
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cJSON_Delete(json);
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free(line);
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return;
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}
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static void debug_stratum_tx(const char * msg)
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{
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ESP_LOGI(TAG, "tx: %s", msg);
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}
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