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// matth-x/ArduinoOcpp
// Copyright Matthias Akstaller 2019 - 2022
// MIT License
#include <ArduinoOcpp/Core/FilesystemAdapter.h>
#include <ArduinoOcpp/Core/ConfigurationOptions.h> //FilesystemOpt
#include <ArduinoOcpp/Debug.h>
#ifndef AO_DEACTIVATE_FLASH
/*
* Platform specific implementations. Currently supported:
* - Arduino LittleFs
* - Arduino SPIFFS
* - ESP-IDF SPIFFS
* - POSIX-like API (tested on Ubuntu 20.04)
*
* You can add support for other file systems by passing a custom adapter to OCPP_initialize(...)
*/
#if AO_USE_FILEAPI == ARDUINO_LITTLEFS || AO_USE_FILEAPI == ARDUINO_SPIFFS
#if AO_USE_FILEAPI == ARDUINO_LITTLEFS
#include <LITTLEFS.h>
#define USE_FS LITTLEFS
#elif AO_USE_FILEAPI == ARDUINO_SPIFFS
#include <FS.h>
#define USE_FS SPIFFS
#endif
namespace ArduinoOcpp {
class ArduinoFileAdapter : public FileAdapter {
File file;
public:
ArduinoFileAdapter(File&& file) : file(file) {}
~ArduinoFileAdapter() {
if (file) {
file.close();
}
}
int read() override {
return file.read();
};
size_t read(char *buf, size_t len) override {
return file.readBytes(buf, len);
}
size_t write(const char *buf, size_t len) override {
return file.printf("%.*s", len, buf);
}
size_t seek(size_t offset) override {
return file.seek(offset);
}
};
class ArduinoFilesystemAdapter : public FilesystemAdapter {
private:
bool valid = false;
FilesystemOpt config;
public:
ArduinoFilesystemAdapter(FilesystemOpt config) : config(config) {
valid = true;
if (config.mustMount()) {
#if AO_USE_FILEAPI == ARDUINO_LITTLEFS
if(!USE_FS.begin(config.formatOnFail())) {
AO_DBG_ERR("Error while mounting LITTLEFS");
valid = false;
} else {
AO_DBG_DEBUG("LittleFS mount success");
}
#elif AO_USE_FILEAPI == ARDUINO_SPIFFS
//ESP8266
SPIFFSConfig cfg;
cfg.setAutoFormat(config.formatOnFail());
SPIFFS.setConfig(cfg);
if (!SPIFFS.begin()) {
AO_DBG_ERR("Unable to initialize: unable to mount SPIFFS");
valid = false;
}
#else
#error
#endif
} //end if mustMount()
#if AO_DBG_LEVEL >= AO_DL_DEBUG
if (valid) {
File root = USE_FS.open("/");
File file = root.openNextFile();
AO_DBG_DEBUG("filesystem content:");
while(file) {
AO_CONSOLE_PRINTF("[AO] > %s\n", file.name() ? file.name() : "null");
file = root.openNextFile();
}
root.close();
}
#endif //endif AO_DBG_LEVEL >= AO_DL_DBUG
}
~ArduinoFilesystemAdapter() {
if (config.mustMount()) {
USE_FS.end();
}
}
operator bool() {return valid;}
int stat(const char *path, size_t *size) override {
if (!USE_FS.exists(path)) {
return -1;
}
File f = USE_FS.open(path, "r");
if (!f) {
return -1;
}
int status = -1;
if (!f.isDirectory()) {
*size = f.size();
status = 0;
} else {
//fetch more information for directory when ArduinoOcpp also uses them
//status = 0;
}
f.close();
return status;
}
std::unique_ptr<FileAdapter> open(const char *fn, const char *mode) override {
File file = USE_FS.open(fn, mode);
if (file && !file.isDirectory()) {
AO_DBG_DEBUG("File open successful: %s", fn);
return std::unique_ptr<FileAdapter>(new ArduinoFileAdapter(std::move(file)));
} else {
return nullptr;
}
}
bool remove(const char *fn) override {
return USE_FS.remove(fn);
};
};
std::weak_ptr<FilesystemAdapter> filesystemCache;
std::shared_ptr<FilesystemAdapter> makeDefaultFilesystemAdapter(FilesystemOpt config) {
if (auto cached = filesystemCache.lock()) {
return cached;
}
if (!config.accessAllowed()) {
AO_DBG_DEBUG("Access to Arduino FS not allowed by config");
return nullptr;
}
auto fs_concrete = new ArduinoFilesystemAdapter(config);
auto fs = std::shared_ptr<FilesystemAdapter>(fs_concrete);
filesystemCache = fs;
if (*fs_concrete) {
return fs;
} else {
return nullptr;
}
}
} //end namespace ArduinoOcpp
#elif AO_USE_FILEAPI == ESPIDF_SPIFFS
#include <sys/stat.h>
#include "esp_spiffs.h"
namespace ArduinoOcpp {
class EspIdfFileAdapter : public FileAdapter {
FILE *file {nullptr};
public:
EspIdfFileAdapter(FILE *file) : file(file) {}
~EspIdfFileAdapter() {
fclose(file);
}
size_t read(char *buf, size_t len) override {
return fread(buf, 1, len, file);
}
size_t write(const char *buf, size_t len) override {
return fwrite(buf, 1, len, file);
}
size_t seek(size_t offset) override {
return fseek(file, offset, SEEK_SET);
}
int read() {
return fgetc(file);
}
};
class EspIdfFilesystemAdapter : public FilesystemAdapter {
public:
FilesystemOpt config;
public:
EspIdfFilesystemAdapter(FilesystemOpt config) : config(config) { }
~EspIdfFilesystemAdapter() {
if (config.mustMount()) {
esp_vfs_spiffs_unregister("ao"); //partition label
AO_DBG_DEBUG("SPIFFS unmounted");
}
}
int stat(const char *path, size_t *size) override {
struct ::stat st;
auto ret = ::stat(path, &st);
if (ret == 0) {
*size = st.st_size;
}
return ret;
}
std::unique_ptr<FileAdapter> open(const char *fn, const char *mode) override {
auto file = fopen(fn, mode);
if (file) {
return std::unique_ptr<FileAdapter>(new EspIdfFileAdapter(std::move(file)));
} else {
AO_DBG_DEBUG("Failed to open file path %s", fn);
return nullptr;
}
}
bool remove(const char *fn) override {
return unlink(fn) == 0;
}
};
std::weak_ptr<FilesystemAdapter> filesystemCache;
std::shared_ptr<FilesystemAdapter> makeDefaultFilesystemAdapter(FilesystemOpt config) {
if (auto cached = filesystemCache.lock()) {
return cached;
}
if (!config.accessAllowed()) {
AO_DBG_DEBUG("Access to ESP-IDF SPIFFS not allowed by config");
return nullptr;
}
bool mounted = true;
if (config.mustMount()) {
mounted = false;
esp_vfs_spiffs_conf_t conf = {
.base_path = AO_FILENAME_PREFIX,
.partition_label = "ao", //also see deconstructor
.max_files = 5,
.format_if_mount_failed = config.formatOnFail()
};
esp_err_t ret = esp_vfs_spiffs_register(&conf);
if (ret == ESP_OK) {
mounted = true;
AO_DBG_DEBUG("SPIFFS mounted");
} else {
if (ret == ESP_FAIL) {
AO_DBG_ERR("Failed to mount or format filesystem");
} else if (ret == ESP_ERR_NOT_FOUND) {
AO_DBG_ERR("Failed to find SPIFFS partition");
} else {
AO_DBG_ERR("Failed to initialize SPIFFS (%s)", esp_err_to_name(ret));
}
}
}
if (mounted) {
auto fs = std::shared_ptr<FilesystemAdapter>(new EspIdfFilesystemAdapter(config));
filesystemCache = fs;
return fs;
} else {
return nullptr;
}
}
} //end namespace ArduinoOcpp
#elif AO_USE_FILEAPI == POSIX_FILEAPI
#include <cstdio>
#include <sys/stat.h>
namespace ArduinoOcpp {
class PosixFileAdapter : public FileAdapter {
FILE *file {nullptr};
public:
PosixFileAdapter(FILE *file) : file(file) {}
~PosixFileAdapter() {
fclose(file);
}
size_t read(char *buf, size_t len) override {
return fread(buf, 1, len, file);
}
size_t write(const char *buf, size_t len) override {
return fwrite(buf, 1, len, file);
}
size_t seek(size_t offset) override {
return fseek(file, offset, SEEK_SET);
}
int read() {
return fgetc(file);
}
};
class PosixFilesystemAdapter : public FilesystemAdapter {
public:
FilesystemOpt config;
public:
PosixFilesystemAdapter(FilesystemOpt config) : config(config) { }
~PosixFilesystemAdapter() = default;
int stat(const char *path, size_t *size) override {
struct ::stat st;
auto ret = ::stat(path, &st);
if (ret == 0) {
*size = st.st_size;
}
return ret;
}
std::unique_ptr<FileAdapter> open(const char *fn, const char *mode) override {
auto file = fopen(fn, mode);
if (file) {
return std::unique_ptr<FileAdapter>(new PosixFileAdapter(std::move(file)));
} else {
AO_DBG_DEBUG("Failed to open file path %s", fn);
return nullptr;
}
}
bool remove(const char *fn) override {
return ::remove(fn) == 0;
}
};
std::weak_ptr<FilesystemAdapter> filesystemCache;
std::shared_ptr<FilesystemAdapter> makeDefaultFilesystemAdapter(FilesystemOpt config) {
if (auto cached = filesystemCache.lock()) {
return cached;
}
if (!config.accessAllowed()) {
AO_DBG_DEBUG("Access to FS not allowed by config");
return nullptr;
}
if (config.mustMount()) {
AO_DBG_DEBUG("Skip mounting on UNIX host");
}
auto fs = std::shared_ptr<FilesystemAdapter>(new PosixFilesystemAdapter(config));
filesystemCache = fs;
return fs;
}
} //end namespace ArduinoOcpp
#endif //switch-case AO_USE_FILEAPI
#endif //!AO_DEACTIVATE_FLASH