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webusb.c
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webusb.c
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#include "webusb.h"
#include <errno.h>
#include <esp_err.h>
#include <esp_log.h>
#include <esp_system.h>
#include <freertos/FreeRTOS.h>
#include <freertos/queue.h>
#include <freertos/task.h>
#include <nvs.h>
#include <nvs_flash.h>
#include <sdkconfig.h>
#include <stdio.h>
#include <string.h>
#include "app_management.h"
#include "appfs.h"
#include "appfs_wrapper.h"
#include "driver/uart.h"
#include "driver_fsoverbus.h"
#include "esp32/rom/crc.h"
#include "esp_ota_ops.h"
#include "esp_vfs.h"
#include "esp_vfs_fat.h"
#include "filesystems.h"
#include "graphics_wrapper.h"
#include "hardware.h"
#include "ice40.h"
#include "managed_i2c.h"
#include "pax_gfx.h"
#include "rtc_memory.h"
#include "system_wrapper.h"
#include "terminal.h"
typedef enum { STATE_WAITING, STATE_RECEIVING_HEADER, STATE_RECEIVING_PAYLOAD, STATE_PROCESS } webusb_state_t;
typedef struct {
uint32_t identifier;
uint32_t command;
uint32_t payload_length;
uint32_t payload_crc;
} webusb_packet_header_t;
typedef struct {
uint32_t magic;
uint32_t identifier;
uint32_t response;
uint32_t payload_length;
uint32_t payload_crc;
} webusb_response_header_t;
const int webusb_max_payload_size = 8192;
const int webusb_packet_buffer_size = sizeof(webusb_packet_header_t) + webusb_max_payload_size;
#define WEBUSB_UART UART_NUM_0
#define WEBUSB_UART_QUEUE_DEPTH (32)
#define WEBUSB_PROTOCOL_VERSION (0x0002)
static QueueHandle_t uart0_queue = NULL;
static const uint32_t webusb_packet_magic = 0xFEEDF00D;
static const uint32_t webusb_response_error = (('E' << 0) | ('R' << 8) | ('R' << 16) | ('0' << 24));
static FILE* file_fd = NULL;
static uint32_t file_write = false;
static appfs_handle_t appfs_handle = APPFS_INVALID_FD;
static uint32_t appfs_position = 0;
static int appfs_size = 0;
// Generic
#define WEBUSB_CMD_SYNC (('S' << 0) | ('Y' << 8) | ('N' << 16) | ('C' << 24)) // Echo back empty response
#define WEBUSB_CMD_PING (('P' << 0) | ('I' << 8) | ('N' << 16) | ('G' << 24)) // Echo payload back to PC
#define WEBUSB_CMD_INFO (('I' << 0) | ('N' << 8) | ('F' << 16) | ('O' << 24)) // Version information
// FAT FS
#define WEBUSB_CMD_FSLS (('F' << 0) | ('S' << 8) | ('L' << 16) | ('S' << 24)) // List files
#define WEBUSB_CMD_FSEX (('F' << 0) | ('S' << 8) | ('E' << 16) | ('X' << 24)) // Check if file exists
#define WEBUSB_CMD_FSMD (('F' << 0) | ('S' << 8) | ('M' << 16) | ('D' << 24)) // Create directory
#define WEBUSB_CMD_FSRM (('F' << 0) | ('S' << 8) | ('R' << 16) | ('M' << 24)) // Remove tree from filesystem
#define WEBUSB_CMD_FSST (('F' << 0) | ('S' << 8) | ('S' << 16) | ('T' << 24)) // Read filesystem state
#define WEBUSB_CMD_FSFW (('F' << 0) | ('S' << 8) | ('F' << 16) | ('W' << 24)) // Open file for writing
#define WEBUSB_CMD_FSFR (('F' << 0) | ('S' << 8) | ('F' << 16) | ('R' << 24)) // Open file for reading
// Generic data transfer functions (used for both FAT FS files & AppFS)
#define WEBUSB_CMD_FSFC (('F' << 0) | ('S' << 8) | ('F' << 16) | ('C' << 24)) // Close file or app
#define WEBUSB_CMD_CHNK (('C' << 0) | ('H' << 8) | ('N' << 16) | ('K' << 24)) // Send / receive a block of data
// AppFS
#define WEBUSB_CMD_APPL (('A' << 0) | ('P' << 8) | ('P' << 16) | ('L' << 24)) // List apps
#define WEBUSB_CMD_APPR (('A' << 0) | ('P' << 8) | ('P' << 16) | ('R' << 24)) // Open app for reading
#define WEBUSB_CMD_APPW (('A' << 0) | ('P' << 8) | ('P' << 16) | ('W' << 24)) // Open app for writing
#define WEBUSB_CMD_APPD (('A' << 0) | ('P' << 8) | ('P' << 16) | ('D' << 24)) // Delete app
#define WEBUSB_CMD_APPX (('A' << 0) | ('P' << 8) | ('P' << 16) | ('X' << 24)) // Start app
// NVS
#define WEBUSB_CMD_NVSL (('N' << 0) | ('V' << 8) | ('S' << 16) | ('L' << 24)) // List values
#define WEBUSB_CMD_NVSR (('N' << 0) | ('V' << 8) | ('S' << 16) | ('R' << 24)) // Read value from NVS
#define WEBUSB_CMD_NVSW (('N' << 0) | ('V' << 8) | ('S' << 16) | ('W' << 24)) // Write value to NVS
#define WEBUSB_CMD_NVSD (('N' << 0) | ('V' << 8) | ('S' << 16) | ('D' << 24)) // Delete value from NVS
size_t webusb_nvs_get_size(char* namespace, char* key, nvs_type_t type) {
if (type == NVS_TYPE_U8) return sizeof(uint8_t);
if (type == NVS_TYPE_I8) return sizeof(int8_t);
if (type == NVS_TYPE_U16) return sizeof(uint16_t);
if (type == NVS_TYPE_I16) return sizeof(int16_t);
if (type == NVS_TYPE_U32) return sizeof(uint32_t);
if (type == NVS_TYPE_I32) return sizeof(int32_t);
if (type == NVS_TYPE_U64) return sizeof(uint64_t);
if (type == NVS_TYPE_I64) return sizeof(int64_t);
if (type == NVS_TYPE_STR) {
nvs_handle_t handle;
if (nvs_open(namespace, NVS_READONLY, &handle) != ESP_OK) return 0;
size_t size = 0;
if (nvs_get_str(handle, key, NULL, &size) != ESP_OK) size = 0;
nvs_close(handle);
return size;
}
if (type == NVS_TYPE_BLOB) {
nvs_handle_t handle;
if (nvs_open(namespace, NVS_READONLY, &handle) != ESP_OK) return 0;
size_t size = 0;
if (nvs_get_blob(handle, key, NULL, &size) != ESP_OK) size = 0;
nvs_close(handle);
return size;
}
return 0;
}
bool webusb_close_files() {
bool closed = false;
if (appfs_handle != APPFS_INVALID_FD) {
appfsClose(appfs_handle);
closed = true;
}
if (file_fd != NULL) {
fclose(file_fd);
closed = true;
}
file_fd = NULL;
appfs_handle = APPFS_INVALID_FD;
appfs_position = 0;
appfs_size = 0;
file_write = false;
return closed;
}
void webusb_enable_uart() {
fflush(stdout);
fsync(fileno(stdout));
uart_set_pin(0, -1, -1, -1, -1);
uart_set_pin(CONFIG_DRIVER_FSOVERBUS_UART_NUM, 1, 3, -1, -1);
}
void webusb_disable_uart() {
uart_set_pin(0, 1, 3, -1, -1);
uart_set_pin(CONFIG_DRIVER_FSOVERBUS_UART_NUM, -1, -1, -1, -1);
}
void webusb_new_enable_uart() {
// Make sure any data remaining in the hardware buffers is completely transmitted
fflush(stdout);
fsync(fileno(stdout));
// Take control over the UART peripheral
ESP_ERROR_CHECK(uart_driver_install(WEBUSB_UART, webusb_packet_buffer_size, webusb_packet_buffer_size, WEBUSB_UART_QUEUE_DEPTH, &uart0_queue, 0));
uart_config_t uart_config = {
.baud_rate = 921600,
.data_bits = UART_DATA_8_BITS,
.parity = UART_PARITY_DISABLE,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
.source_clk = UART_SCLK_APB,
};
ESP_ERROR_CHECK(uart_param_config(WEBUSB_UART, &uart_config));
}
void webusb_new_disable_uart() { uart_driver_delete(WEBUSB_UART); }
void webusb_main(xQueueHandle button_queue) {
terminal_start();
terminal_log("Starting FS over bus...");
driver_fsoverbus_init(&terminal_log_wrapped);
webusb_enable_uart();
}
void webusb_send_error(webusb_packet_header_t* header, uint8_t error) {
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = webusb_response_error + (error << 24),
.payload_length = 0,
.payload_crc = 0};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
}
bool webusb_terminate_string(webusb_packet_header_t* header, uint8_t* payload) {
if (header->payload_length < 1 || header->payload_length >= webusb_max_payload_size - 1) {
webusb_send_error(header, 9);
return false;
}
payload[header->payload_length] = '\0';
return true;
}
void webusb_fs_list(webusb_packet_header_t* header, uint8_t* payload) {
if (!webusb_terminate_string(header, payload)) return;
DIR* dir = opendir((char*) (payload));
if (dir == NULL) {
webusb_send_error(header, 5);
return;
}
struct dirent* ent;
size_t response_length = 0;
while ((ent = readdir(dir)) != NULL) {
response_length += sizeof(unsigned char); // d_type
response_length += sizeof(uint32_t); // name length
response_length += strlen(ent->d_name); // d_name
response_length += sizeof(int); // stat ok
response_length += sizeof(uint32_t); // file size
response_length += sizeof(uint64_t); // file modification timestamp
}
if (response_length > 0) {
rewinddir(dir);
uint8_t* response_buffer = malloc(response_length);
if (response_buffer == NULL) {
webusb_send_error(header, 4);
closedir(dir);
return;
}
size_t response_position = 0;
while ((ent = readdir(dir)) != NULL) {
unsigned char* type = &response_buffer[response_position];
*type = ent->d_type;
response_position += sizeof(unsigned char);
uint32_t* namelength = (uint32_t*) &response_buffer[response_position];
*namelength = strlen(ent->d_name);
response_position += sizeof(uint32_t);
strcpy((char*) &response_buffer[response_position], ent->d_name);
response_position += strlen(ent->d_name);
struct stat sb = {0};
char tpath[255];
sprintf(tpath, (char*) (payload));
if (payload[strlen((char*) (payload)) - 1] != '/') {
strcat(tpath, "/");
}
strcat(tpath, ent->d_name);
int* statok = (int*) &response_buffer[response_position];
response_position += sizeof(int);
*statok = stat(tpath, &sb);
uint32_t* filesize = (uint32_t*) &response_buffer[response_position];
*filesize = sb.st_size;
response_position += sizeof(uint32_t);
uint64_t* mtime = (uint64_t*) &response_buffer[response_position];
*mtime = sb.st_mtime;
response_position += sizeof(uint64_t);
}
closedir(dir);
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = response_length,
.payload_crc = crc32_le(0, response_buffer, response_length)};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, response_buffer, response_length);
} else {
closedir(dir);
webusb_response_header_t response = {
.magic = webusb_packet_magic, .identifier = header->identifier, .response = header->command, .payload_length = 0, .payload_crc = 0};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
}
}
void webusb_process_packet(webusb_packet_header_t* header, uint8_t* payload) {
switch (header->command) {
case WEBUSB_CMD_SYNC:
{
uint16_t result = WEBUSB_PROTOCOL_VERSION;
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = sizeof(result),
.payload_crc = crc32_le(0, (uint8_t*) &result, sizeof(result))};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, (uint8_t*) &result, sizeof(result));
break;
}
case WEBUSB_CMD_PING:
{
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = header->payload_length,
.payload_crc = header->payload_crc};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, payload, header->payload_length);
break;
}
case WEBUSB_CMD_INFO:
{
const esp_app_desc_t* app_description = esp_ota_get_app_description();
sprintf((char*) payload, "%s\n%s", app_description->project_name, app_description->version);
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = strlen((char*) payload),
.payload_crc = crc32_le(0, payload, strlen((char*) payload))};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, payload, strlen((char*) payload));
break;
}
case WEBUSB_CMD_FSLS:
webusb_fs_list(header, payload);
break;
case WEBUSB_CMD_FSEX:
{
if (!webusb_terminate_string(header, payload)) return;
uint8_t result[1] = {false};
FILE* fd = fopen((char*) payload, "rb");
result[0] = (fd != NULL);
if (fd != NULL) {
fclose(fd);
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = 1,
.payload_crc = crc32_le(0, result, 1)};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, 1);
break;
}
case WEBUSB_CMD_FSMD:
{
if (!webusb_terminate_string(header, payload)) return;
uint8_t result[1];
result[0] = create_dir((char*) payload);
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = 1,
.payload_crc = crc32_le(0, result, 1)};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, 1);
break;
}
case WEBUSB_CMD_FSRM:
{
if (!webusb_terminate_string(header, payload)) return;
uint8_t result[1];
result[0] = remove_recursive((char*) payload);
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = 1,
.payload_crc = crc32_le(0, result, 1)};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, 1);
break;
}
case WEBUSB_CMD_FSST:
{
uint8_t result[sizeof(uint64_t) * 6];
uint64_t* internal_size = (uint64_t*) &result[sizeof(uint64_t) * 0];
uint64_t* internal_free = (uint64_t*) &result[sizeof(uint64_t) * 1];
uint64_t* sdcard_size = (uint64_t*) &result[sizeof(uint64_t) * 2];
uint64_t* sdcard_free = (uint64_t*) &result[sizeof(uint64_t) * 3];
uint64_t* appfs_size = (uint64_t*) &result[sizeof(uint64_t) * 4];
uint64_t* appfs_free = (uint64_t*) &result[sizeof(uint64_t) * 5];
get_internal_filesystem_size_and_available(internal_size, internal_free);
get_sdcard_filesystem_size_and_available(sdcard_size, sdcard_free);
*appfs_size = appfsGetTotalMem();
*appfs_free = appfsGetFreeMem();
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = sizeof(result),
.payload_crc = crc32_le(0, result, sizeof(result))};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, sizeof(result));
break;
}
case WEBUSB_CMD_FSFW:
{
if (!webusb_terminate_string(header, payload)) return;
webusb_close_files();
file_write = true;
file_fd = fopen((char*) payload, "wb");
uint8_t result[1] = {0};
if (file_fd != NULL) {
result[0] = 1;
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = 1,
.payload_crc = crc32_le(0, result, 1)};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, 1);
break;
}
case WEBUSB_CMD_FSFR:
{
if (!webusb_terminate_string(header, payload)) return;
webusb_close_files();
file_write = false;
file_fd = fopen((char*) payload, "rb");
uint8_t result[1] = {0};
if (file_fd != NULL) {
result[0] = 1;
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = 1,
.payload_crc = crc32_le(0, result, 1)};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, 1);
break;
}
case WEBUSB_CMD_FSFC:
{
uint8_t result[1] = {0};
result[0] = webusb_close_files();
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = 1,
.payload_crc = crc32_le(0, result, 1)};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, 1);
break;
}
case WEBUSB_CMD_CHNK:
{
if (file_fd == NULL && appfs_handle == APPFS_INVALID_FD) {
// No file open
webusb_send_error(header, 6);
return;
}
if (file_write) {
// Writing
uint32_t length = 0;
if (file_fd != NULL) {
length = fwrite(payload, 1, header->payload_length, file_fd);
} else {
size_t maximum_size = appfs_size - appfs_position;
if (header->payload_length > maximum_size) {
webusb_send_error(header, 8);
return;
}
esp_err_t res = appfsWrite(appfs_handle, appfs_position, payload, header->payload_length);
if (res == ESP_OK) {
length = header->payload_length;
appfs_position += header->payload_length;
}
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = sizeof(size_t),
.payload_crc = crc32_le(0, (uint8_t*) &length, sizeof(size_t))};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, (uint8_t*) &length, sizeof(uint32_t));
} else {
uint32_t requested_size = webusb_max_payload_size;
if (header->payload_length == 4) {
requested_size = *((uint32_t*) (payload));
} else if (header->payload_length != 0) {
webusb_send_error(header, 7); // Data sent while reading
return;
}
if (requested_size < 1 || requested_size > webusb_max_payload_size) {
requested_size = webusb_max_payload_size;
}
uint8_t* data = malloc(requested_size);
if (data == NULL) {
webusb_send_error(header, 4);
} else {
size_t length = 0;
if (file_fd != NULL) {
length = fread(data, 1, requested_size, file_fd);
} else {
size_t maximum_size = appfs_size - appfs_position;
length = requested_size;
if (length > maximum_size) {
length = maximum_size;
}
esp_err_t res = appfsRead(appfs_handle, appfs_position, data, length);
if (res == ESP_OK) {
appfs_position += length;
} else {
length = 0;
}
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = length,
.payload_crc = crc32_le(0, data, length)};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, data, length);
free(data);
}
}
break;
}
case WEBUSB_CMD_APPL:
{
int response_length = 0;
appfs_handle_t handle = APPFS_INVALID_FD;
while ((handle = appfsNextEntry(handle)) != APPFS_INVALID_FD) {
const char* name;
const char* title;
uint16_t version;
int size;
appfsEntryInfoExt(handle, &name, &title, &version, &size);
response_length += sizeof(uint16_t); // name length
response_length += strlen(name);
response_length += sizeof(uint16_t); // title length
response_length += strlen(title);
response_length += sizeof(uint16_t); // version
response_length += sizeof(uint32_t); // size
}
if (response_length > 0) {
uint8_t* response_buffer = malloc(response_length);
if (response_buffer == NULL) {
webusb_send_error(header, 4);
return;
}
handle = APPFS_INVALID_FD;
int response_position = 0;
while ((handle = appfsNextEntry(handle)) != APPFS_INVALID_FD) {
const char* name;
const char* title;
uint16_t version;
int size;
appfsEntryInfoExt(handle, &name, &title, &version, &size);
uint16_t* response_name_length = (uint16_t*) &response_buffer[response_position];
*response_name_length = strlen(name);
response_position += sizeof(uint16_t);
memcpy((char*) &response_buffer[response_position], name, strlen(name));
response_position += strlen(name);
uint16_t* response_title_length = (uint16_t*) &response_buffer[response_position];
*response_title_length = strlen(title);
response_position += sizeof(uint16_t);
memcpy((char*) &response_buffer[response_position], title, strlen(title));
response_position += strlen(title);
uint16_t* response_version = (uint16_t*) &response_buffer[response_position];
*response_version = version;
response_position += sizeof(uint16_t);
uint32_t* response_size = (uint32_t*) &response_buffer[response_position];
*response_size = size;
response_position += sizeof(uint32_t); // size
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = response_length,
.payload_crc = crc32_le(0, response_buffer, response_length)};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, response_buffer, response_length);
} else {
webusb_response_header_t response = {
.magic = webusb_packet_magic, .identifier = header->identifier, .response = header->command, .payload_length = 0, .payload_crc = 0};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
}
break;
}
case WEBUSB_CMD_APPR:
{
if (!webusb_terminate_string(header, payload)) return;
uint8_t result[5] = {0};
uint8_t* result_success = &result[0];
int* result_size = (int*) &result[1];
webusb_close_files();
appfs_handle = appfsOpen((char*) payload);
if (appfs_handle != APPFS_INVALID_FD) {
appfsEntryInfo(appfs_handle, NULL, &appfs_size);
*result_success = true;
*result_size = appfs_size;
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = sizeof(result),
.payload_crc = crc32_le(0, result, sizeof(result))};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, sizeof(result));
break;
}
case WEBUSB_CMD_APPW:
{
webusb_close_files();
if (header->payload_length < 8) {
webusb_send_error(header, 9);
return;
}
uint8_t name_length = payload[0];
char* payload_name = (char*) &payload[sizeof(uint8_t)];
uint8_t title_length = payload[sizeof(uint8_t) + name_length];
char* payload_title = (char*) &payload[sizeof(uint8_t) + name_length + sizeof(uint8_t)];
uint32_t* payload_filesize = (uint32_t*) &payload[sizeof(uint8_t) + name_length + sizeof(uint8_t) + title_length];
uint16_t* payload_version = (uint16_t*) &payload[sizeof(uint8_t) + name_length + sizeof(uint8_t) + title_length + sizeof(uint32_t)];
if (name_length >= 48) { // Name too long
webusb_send_error(header, 10);
return;
}
if (title_length >= 64) { // Title too long
webusb_send_error(header, 11);
return;
}
char name[48] = {0};
strncpy(name, payload_name, name_length);
char title[64] = {0};
strncpy(title, payload_title, title_length);
appfs_size = *payload_filesize; // Global variable!
appfs_position = 0; // Global variable!
uint16_t version = *payload_version;
uint8_t result[1] = {0};
esp_err_t res = appfsCreateFileExt(name, title, version, appfs_size, &appfs_handle);
if (res == ESP_OK) {
int roundedSize = (appfs_size + (SPI_FLASH_MMU_PAGE_SIZE - 1)) & (~(SPI_FLASH_MMU_PAGE_SIZE - 1));
res = appfsErase(appfs_handle, 0, roundedSize);
if (res == ESP_OK) {
result[0] = 1;
file_write = true;
}
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = sizeof(result),
.payload_crc = crc32_le(0, result, sizeof(result))};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, sizeof(result));
break;
}
case WEBUSB_CMD_APPD:
{
if (!webusb_terminate_string(header, payload)) return;
uint8_t result[1] = {0};
esp_err_t res = appfsDeleteFile((char*) payload);
if (res == ESP_OK) result[0] = 1;
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = sizeof(result),
.payload_crc = crc32_le(0, result, sizeof(result))};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, sizeof(result));
break;
}
case WEBUSB_CMD_APPX:
{
if (!webusb_terminate_string(header, payload)) return;
uint8_t result[1] = {0};
appfs_handle_t fd = appfsOpen((char*) payload);
if (fd != APPFS_INVALID_FD) {
result[0] = 1;
}
if (header->payload_length > strlen((char*) payload) + 1) { // If payload is longer than the length of the app name
char* command =
(char*) &payload[strlen((char*) payload) + 1]; // Skip past the first \0 terminator and threat the rest of the payload as command
rtc_memory_string_write(command);
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = sizeof(result),
.payload_crc = crc32_le(0, result, sizeof(result))};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, sizeof(result));
if (fd != APPFS_INVALID_FD) {
appfs_boot_app(fd);
}
break;
}
case WEBUSB_CMD_NVSL:
{
char* namespace = NULL;
if (header->payload_length > 0) {
if (!webusb_terminate_string(header, payload)) return;
namespace = (char*) payload;
}
uint32_t response_length = 0;
nvs_iterator_t it = nvs_entry_find("nvs", namespace, NVS_TYPE_ANY);
while (it != NULL) {
nvs_entry_info_t info;
nvs_entry_info(it, &info);
it = nvs_entry_next(it);
uint16_t* response_namespace_name_length = (uint16_t*) &payload[response_length];
response_length += sizeof(uint16_t);
if (response_length >= webusb_max_payload_size) {
webusb_send_error(header, 12);
return;
}
*response_namespace_name_length = strlen(info.namespace_name);
char* response_namespace_name = (char*) &payload[response_length];
response_length += *response_namespace_name_length;
if (response_length >= webusb_max_payload_size) {
webusb_send_error(header, 12);
return;
}
strcpy(response_namespace_name, info.namespace_name);
uint16_t* response_key_length = (uint16_t*) &payload[response_length];
response_length += sizeof(uint16_t);
if (response_length >= webusb_max_payload_size) {
webusb_send_error(header, 12);
return;
}
*response_key_length = strlen(info.key);
char* response_key = (char*) &payload[response_length];
response_length += strlen(info.key);
if (response_length >= webusb_max_payload_size) {
webusb_send_error(header, 12);
return;
}
strcpy(response_key, info.key);
uint8_t* response_type = (uint8_t*) &payload[response_length];
response_length += sizeof(uint8_t);
if (response_length >= webusb_max_payload_size) {
webusb_send_error(header, 12);
return;
}
*response_type = (uint8_t) info.type;
uint32_t* response_size = (uint32_t*) &payload[response_length];
response_length += sizeof(uint32_t);
if (response_length >= webusb_max_payload_size) {
webusb_send_error(header, 12);
return;
}
*response_size = webusb_nvs_get_size(info.namespace_name, info.key, info.type);
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = response_length,
.payload_crc = crc32_le(0, payload, response_length)};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, payload, response_length);
break;
}
case WEBUSB_CMD_NVSR:
{
if (header->payload_length < 3) {
webusb_send_error(header, 9);
return;
}
uint8_t namespace_length = payload[0];
char* payload_namespace = (char*) &payload[sizeof(uint8_t)];
uint8_t key_length = payload[sizeof(uint8_t) + namespace_length];
char* payload_key = (char*) &payload[sizeof(uint8_t) + namespace_length + sizeof(uint8_t)];
uint8_t payload_type = payload[sizeof(uint8_t) + namespace_length + sizeof(uint8_t) + key_length];
if (namespace_length >= 17 || namespace_length < 1) { // Namespace name too long
webusb_send_error(header, 10);
return;
}
if (key_length >= 17 || key_length < 1) { // Key too long
webusb_send_error(header, 11);
return;
}
char namespace_name[17] = {0};
strncpy(namespace_name, payload_namespace, namespace_length);
char key[17] = {0};
strncpy(key, payload_key, key_length);
nvs_type_t type = (nvs_type_t) payload_type;
uint32_t result_length = 0;
nvs_handle_t handle;
if (nvs_open(namespace_name, NVS_READONLY, &handle) == ESP_OK) {
if (type == NVS_TYPE_U8) {
uint8_t* data = (uint8_t*) payload;
if (nvs_get_u8(handle, key, data) == ESP_OK) {
result_length += sizeof(uint8_t);
}
} else if (type == NVS_TYPE_I8) {
int8_t* data = (int8_t*) payload;
if (nvs_get_i8(handle, key, data) == ESP_OK) {
result_length = sizeof(int8_t);
}
} else if (type == NVS_TYPE_U16) {
uint16_t* data = (uint16_t*) payload;
if (nvs_get_u16(handle, key, data) == ESP_OK) {
result_length = sizeof(uint16_t);
}
} else if (type == NVS_TYPE_I16) {
int16_t* data = (int16_t*) payload;
if (nvs_get_i16(handle, key, data) == ESP_OK) {
result_length = sizeof(int16_t);
}
} else if (type == NVS_TYPE_U32) {
uint32_t* data = (uint32_t*) payload;
if (nvs_get_u32(handle, key, data) == ESP_OK) {
result_length = sizeof(uint32_t);
}
} else if (type == NVS_TYPE_I32) {
int32_t* data = (int32_t*) payload;
if (nvs_get_i32(handle, key, data) == ESP_OK) {
result_length = sizeof(int32_t);
}
} else if (type == NVS_TYPE_U64) {
uint64_t* data = (uint64_t*) payload;
if (nvs_get_u64(handle, key, data) == ESP_OK) {
result_length = sizeof(uint64_t);
}
} else if (type == NVS_TYPE_I64) {
int64_t* data = (int64_t*) payload;
if (nvs_get_i64(handle, key, data) == ESP_OK) {
result_length = sizeof(int64_t);
}
} else if (type == NVS_TYPE_STR) {
char* data = (char*) payload;
size_t string_length = 0;
if (nvs_get_str(handle, key, NULL, &string_length) == ESP_OK) {
if (string_length <= webusb_max_payload_size) {
if (nvs_get_str(handle, key, data, &string_length) == ESP_OK) {
result_length = string_length - 1; // Remove \0 terminator from response data
}
}
}
} else if (type == NVS_TYPE_BLOB) {
void* data = (void*) payload;
size_t blob_length = 0;
if (nvs_get_blob(handle, key, NULL, &blob_length) == ESP_OK) {
if (blob_length <= webusb_max_payload_size) {
if (nvs_get_blob(handle, key, data, &blob_length) == ESP_OK) {
result_length = blob_length;
}
}
}
}
nvs_close(handle);
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = result_length,
.payload_crc = result_length ? crc32_le(0, payload, result_length) : 0};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
if (result_length > 0) {
uart_write_bytes(WEBUSB_UART, payload, result_length);
}
break;
}
case WEBUSB_CMD_NVSW:
{
if (header->payload_length < 3 || header->payload_length >= webusb_max_payload_size) {
webusb_send_error(header, 9);
return;
}
uint32_t payload_position = 0;
uint8_t namespace_length = payload[payload_position];
payload_position += sizeof(uint8_t);
char* payload_namespace = (char*) &payload[payload_position];
payload_position += namespace_length;
uint8_t key_length = payload[payload_position];
payload_position += sizeof(uint8_t);
char* payload_key = (char*) &payload[payload_position];
payload_position += key_length;
uint8_t payload_type = payload[payload_position];
payload_position += sizeof(uint8_t);
void* data = (void*) &payload[payload_position];
uint32_t data_length = header->payload_length - payload_position;
if (header->payload_length <= payload_position) { // Request too short
webusb_send_error(header, 12);
return;
}
if (namespace_length >= 17 || namespace_length < 1) { // Namespace name too long
webusb_send_error(header, 10);
return;
}
if (key_length >= 17 || key_length < 1) { // Key too long
webusb_send_error(header, 11);
return;
}
char namespace_name[17] = {0};
strncpy(namespace_name, payload_namespace, namespace_length);
char key[17] = {0};
strncpy(key, payload_key, key_length);
nvs_type_t type = (nvs_type_t) payload_type;
if (type == NVS_TYPE_STR) {
char* data_str = (char*) data;
data_str[data_length] = '\0';
}
uint8_t result[1] = {0};
nvs_handle_t handle;
if (nvs_open(namespace_name, NVS_READWRITE, &handle) == ESP_OK) {
if ((type == NVS_TYPE_U8) && (data_length == sizeof(uint8_t)) && (nvs_set_u8(handle, key, *((uint8_t*) (data))) == ESP_OK)) {
result[0] = 1;
} else if ((type == NVS_TYPE_U8) && (data_length == sizeof(uint8_t)) && (nvs_set_u8(handle, key, *((uint8_t*) (data))) == ESP_OK)) {
result[0] = 1;
} else if ((type == NVS_TYPE_I8) && (data_length == sizeof(int8_t)) && (nvs_set_i8(handle, key, *((int8_t*) (data))) == ESP_OK)) {
result[0] = 1;
} else if ((type == NVS_TYPE_U16) && (data_length == sizeof(uint16_t)) && (nvs_set_u16(handle, key, *((uint16_t*) (data))) == ESP_OK)) {
result[0] = 1;
} else if ((type == NVS_TYPE_I16) && (data_length == sizeof(int16_t)) && (nvs_set_i16(handle, key, *((int16_t*) (data))) == ESP_OK)) {
result[0] = 1;
} else if ((type == NVS_TYPE_U32) && (data_length == sizeof(uint32_t)) && (nvs_set_u32(handle, key, *((uint32_t*) (data))) == ESP_OK)) {
result[0] = 1;
} else if ((type == NVS_TYPE_I32) && (data_length == sizeof(int32_t)) && (nvs_set_i32(handle, key, *((int32_t*) (data))) == ESP_OK)) {
result[0] = 1;
} else if ((type == NVS_TYPE_U64) && (data_length == sizeof(uint64_t)) && (nvs_set_u64(handle, key, *((uint64_t*) (data))) == ESP_OK)) {
result[0] = 1;
} else if ((type == NVS_TYPE_I64) && (data_length == sizeof(int64_t)) && (nvs_set_i64(handle, key, *((int64_t*) (data))) == ESP_OK)) {
result[0] = 1;
} else if ((type == NVS_TYPE_STR) && (nvs_set_str(handle, key, (char*) data) == ESP_OK)) {
result[0] = 1;
} else if ((type == NVS_TYPE_BLOB) && (nvs_set_blob(handle, key, data, data_length)) == ESP_OK) {
result[0] = 1;
}
nvs_close(handle);
}
webusb_response_header_t response = {.magic = webusb_packet_magic,
.identifier = header->identifier,
.response = header->command,
.payload_length = sizeof(result),
.payload_crc = crc32_le(0, result, sizeof(result))};
uart_write_bytes(WEBUSB_UART, &response, sizeof(webusb_response_header_t));
uart_write_bytes(WEBUSB_UART, result, sizeof(result));
break;
}
case WEBUSB_CMD_NVSD:
{
if (header->payload_length < 3) {
webusb_send_error(header, 9);
return;
}
uint32_t payload_position = 0;
uint8_t namespace_length = payload[payload_position];
payload_position += sizeof(uint8_t);
char* payload_namespace = (char*) &payload[payload_position];
payload_position += namespace_length;
uint8_t key_length = payload[payload_position];
payload_position += sizeof(uint8_t);