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mirror of https://github.com/falk-werner/webfuse-provider synced 2024-10-27 20:44:10 +00:00

Merge pull request #42 from falk-werner/remove-example

feature: removed example

To focus on webfuse library, daemon, provider and web based example are moved into separate repositories:

daemon: https://github.com/falk-werner/webfused
provider: https://github.com/falk-werner/webfuse-provider
example: https://github.com/falk-werner/webfuse-example
This commit is contained in:
Falk Werner 2020-02-10 16:21:45 +01:00 committed by GitHub
commit 7023fcd14a
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GPG Key ID: 4AEE18F83AFDEB23
19 changed files with 11 additions and 2282 deletions

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@ -2,7 +2,6 @@ cmake_minimum_required (VERSION 3.10)
project(webfuse VERSION 0.2.0 DESCRIPTION "Websocket filesystem based on libfuse") project(webfuse VERSION 0.2.0 DESCRIPTION "Websocket filesystem based on libfuse")
option(WITHOUT_TESTS "disable unit tests" OFF) option(WITHOUT_TESTS "disable unit tests" OFF)
option(WITHOUT_EXAMPLE "disable example" OFF)
set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH};${CMAKE_CURRENT_SOURCE_DIR}/cmake") set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH};${CMAKE_CURRENT_SOURCE_DIR}/cmake")
include(coverage) include(coverage)
@ -190,81 +189,6 @@ install(FILES include/webfuse_provider.h DESTINATION include)
install(DIRECTORY include/webfuse/provider DESTINATION include/webfuse) install(DIRECTORY include/webfuse/provider DESTINATION include/webfuse)
install(FILES "${PROJECT_BINARY_DIR}/libwebfuse-provider.pc" DESTINATION lib${LIB_SUFFIX}/pkgconfig) install(FILES "${PROJECT_BINARY_DIR}/libwebfuse-provider.pc" DESTINATION lib${LIB_SUFFIX}/pkgconfig)
# examples
pkg_check_modules(OPENSSL REQUIRED openssl)
if(NOT WITHOUT_EXAMPLE)
# libuserdb
add_library(userdb STATIC
example/lib/userdb/src/userdb.c
)
target_include_directories(userdb PUBLIC
example/lib/userdb/include
${OPENSSL_INCLUDE_DIRS}
${JANSSON_INCLUDE_DIRS}
)
target_compile_options(userdb PUBLIC ${OPENSSL_CFLAGS_OTHER})
# daemon
add_executable(webfused
example/daemon/main.c
)
target_link_libraries(webfused PUBLIC webfuse-adapter userdb ${OPENSSL_LIBRARIES} ${EXTRA_LIBS})
target_compile_options(webfused PUBLIC ${OPENSSL_CFLAGS_OTHER})
# provider
add_executable(webfuse-provider-app
example/provider/main.c
)
set_target_properties(webfuse-provider-app PROPERTIES OUTPUT_NAME webfuse-provider)
target_link_libraries(webfuse-provider-app PUBLIC webfuse-provider ${EXTRA_LIBS})
target_include_directories(webfuse-provider-app PUBLIC ${EXTRA_INCLUDE_DIRS})
# static-filesystem-provider
add_executable(static-filesystem-provider
example/provider/static_filesystem.c
)
target_link_libraries(static-filesystem-provider PUBLIC webfuse-provider ${EXTRA_LIBS})
target_include_directories(static-filesystem-provider PUBLIC ${EXTRA_INCLUDE_DIRS})
target_compile_options(static-filesystem-provider PUBLIC ${EXTRA_CFLAGS})
# webfuse-passwd
add_executable(webfuse-passwd
example/passwd/main.c
)
target_link_libraries(webfuse-passwd PUBLIC
userdb
${OPENSSL_LIBRARIES}
${JANSSON_LIBRARIES}
)
target_include_directories(webfuse-passwd PUBLIC
example/passwd
example/lib/userdb/include
${OPENSSL_INCLUDE_DIRS}
${JANSSON_INCLUDE_DIRS}
)
target_compile_options(webfuse-passwd PUBLIC ${OPENSSL_CFLAGS_OTHER})
endif(NOT WITHOUT_EXAMPLE)
# tests # tests
if(NOT WITHOUT_TESTS) if(NOT WITHOUT_TESTS)

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@ -9,10 +9,11 @@ webfuse combines libwebsockets and libfuse. It allows ot attach a remote filesys
## Contents ## Contents
- [Motivation](#Motivation) - [Motivation](#Motivation)
- [Fellow Repositories](#Fellow-Repositories)
- [Concept](#Concept) - [Concept](#Concept)
- [Similar Projects](#Similar-Projects) - [Similar Projects](#Similar-Projects)
- [API](#API) - [API](#API)
- [Build and run](#Build-and-run) - [Build](#Build)
- [Dependencies](#Dependencies) - [Dependencies](#Dependencies)
## Motivation ## Motivation
@ -32,6 +33,12 @@ To avoid Steps 1 and 2, it would be great to keep the update file entirely in we
webfuse solves this problem by using the [WebSocket](https://en.wikipedia.org/wiki/WebSocket) protocol. The emdedded device runs a service, known as webfuse adapter, awaiting incoming connections, e.g. from a web browser. The browser acts as a file system provider, providing the update file to the device. webfuse solves this problem by using the [WebSocket](https://en.wikipedia.org/wiki/WebSocket) protocol. The emdedded device runs a service, known as webfuse adapter, awaiting incoming connections, e.g. from a web browser. The browser acts as a file system provider, providing the update file to the device.
## Fellow Repositories
- **[webfuse-example](https://github.com/falk-werner/webfuse-example)**: Example of webfuse
- **[webfused](https://github.com/falk-werner/webfused)**: Reference implementation of webfuse daemon
- **[webfuse-provider](https://github.com/falk-werner/webfuse-provider)**: Reference implementation of webfuse provider
## Concept ## Concept
![concept](doc/concept.png) ![concept](doc/concept.png)
@ -377,7 +384,7 @@ The authenticator type **username** is used to authenticate via username and pas
**Note** that no further encryption is done, so this authenticator type should not be used over unencrypted websocket connections. **Note** that no further encryption is done, so this authenticator type should not be used over unencrypted websocket connections.
## Build and run ## Build
To install dependencies, see below. To install dependencies, see below.
@ -385,19 +392,15 @@ To install dependencies, see below.
mkdir .build mkdir .build
cd .build cd .build
cmake .. cmake ..
mkdir test make
./webfused -m test --document_root=../exmaple/daemon/www --port=4711
### Build options ### Build options
By default, unit tests and example application are enabled. You can disable them using the following cmake options: By default, unit tests are enabled. You can disable them using the following cmake options:
- **WITHOUT_TESTS**: disable tests - **WITHOUT_TESTS**: disable tests
`cmake -DWITHOUT_TESTS=ON ..` `cmake -DWITHOUT_TESTS=ON ..`
- **WITHOUT_EXAMPLE**: disable example
`cmake -DWITHOUD_EXAMPLE=ON ..`
## Dependencies ## Dependencies
- [libfuse3](https://github.com/libfuse/libfuse/) - [libfuse3](https://github.com/libfuse/libfuse/)

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@ -1,196 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#include <stdbool.h>
#include <signal.h>
#include <unistd.h>
#include <getopt.h>
#include <webfuse_adapter.h>
#include <userdb.h>
#define SERVICE_TIMEOUT (1 * 1000)
struct args
{
struct wf_server_config * config;
char * passwd_path;
bool show_help;
};
static bool shutdown_requested = false;
static void show_help(void)
{
printf(
"webfused, Copyright (c) 2019, webfuse authors <https://github.com/falk-werner/webfuse>\n"
"Websocket file system daemon\n"
"\n"
"Usage: webfused [m <mount_point>] [-d <document_root] [-n <vhost_name>] [-p <port>]\n"
" [-c <server_cert_path>] [-k <server_key_path>] [-P <passwd_path>]\n"
"\n"
"Options:\n"
"\t-m, --mount_point Path of mount point (required)\n"
"\t-d, --document_root Path of www directory (default: not set, www disabled)\n"
"\t-c, --server_cert_path Path of servers own certificate (default: not set, TLS disabled)\n"
"\t-k, --server_key_path Path of servers private key (default: not set, TLS disabled)\n"
"\t-n, --vhost_name Name of virtual host (default: \"localhost\")\n"
"\t-p, --port Number of servers port (default: 8080)\n"
"\t-P, --passwd_path Path to password file (default: not set, authentication disabled)\n"
"\n");
}
static bool authenticate(struct wf_credentials * creds, void * user_data)
{
bool result = false;
struct args * args = user_data;
char const * username = wf_credentials_get(creds, "username");
char const * password = wf_credentials_get(creds, "password");
if ((NULL != username) && (NULL != password))
{
struct userdb * db = userdb_create("");
result = userdb_load(db, args->passwd_path);
if (result)
{
result = userdb_check(db, username, password);
}
userdb_dispose(db);
}
return result;
}
static int parse_arguments(int argc, char * argv[], struct args * args)
{
static struct option const options[] =
{
{"mount_point", required_argument, NULL, 'm'},
{"document_root", required_argument, NULL, 'd'},
{"server_cert_path", required_argument, NULL, 'c'},
{"server_key_path", required_argument, NULL, 'k'},
{"vhost_name", required_argument, NULL, 'n'},
{"port", required_argument, NULL, 'p'},
{"passwd_path", required_argument, NULL, 'P'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, 0}
};
bool result = EXIT_SUCCESS;
bool finished = false;
bool has_mountpoint = false;
while ((!finished) && (EXIT_SUCCESS == result))
{
int option_index = 0;
int const c = getopt_long(argc, argv, "m:d:c:k:n:p:P:h", options, &option_index);
switch (c)
{
case -1:
finished = true;
break;
case 'h':
args->show_help = true;
finished = true;
break;
case 'm':
wf_server_config_set_mountpoint(args->config, optarg);
has_mountpoint = true;
break;
case 'd':
wf_server_config_set_documentroot(args->config, optarg);
break;
case 'c':
wf_server_config_set_certpath(args->config, optarg);
break;
case 'k':
wf_server_config_set_keypath(args->config, optarg);
break;
case 'n':
wf_server_config_set_vhostname(args->config, optarg);
break;
case 'p':
wf_server_config_set_port(args->config, atoi(optarg));
break;
case 'P':
free(args->passwd_path);
args->passwd_path = strdup(optarg);
wf_server_config_add_authenticator(args->config,
"username",
&authenticate,
args);
break;
default:
fprintf(stderr, "error: unknown argument\n");
result = EXIT_FAILURE;
break;
}
}
if ((EXIT_SUCCESS == result) && (!args->show_help))
{
if (!has_mountpoint)
{
fprintf(stderr, "error: missing mount point\n");
result = EXIT_FAILURE;
}
}
if (EXIT_SUCCESS != result)
{
args->show_help = true;
}
return result;
}
static void on_interrupt(int signal_id)
{
(void) signal_id;
shutdown_requested = true;
}
int main(int argc, char * argv[])
{
struct args args;
args.config = wf_server_config_create();
wf_server_config_set_vhostname(args.config, "localhost");
wf_server_config_set_port(args.config, 8080);
args.passwd_path = NULL;
args.show_help = false;
int result = parse_arguments(argc, argv, &args);
if (!args.show_help)
{
signal(SIGINT, on_interrupt);
struct wf_server * server = wf_server_create(args.config);
if (NULL != server)
{
while (!shutdown_requested)
{
wf_server_service(server, SERVICE_TIMEOUT);
}
wf_server_dispose(server);
}
else
{
fprintf(stderr, "fatal: unable start server\n");
result = EXIT_FAILURE;
}
}
else
{
show_help();
}
free(args.passwd_path);
wf_server_config_dispose(args.config);
return result;
}

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@ -1,18 +0,0 @@
<html>
<head>
<title>WebFuse Example</title>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="style/main.css">
<script type="module" src="js/startup.js"></script>
</head>
<body>
<div class="page">
<div class="window">
<div class="title">Connection</div>
<div id="connection"></div>
</div>
</div>
</body>
</html>

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@ -1,287 +0,0 @@
module.exports = {
"env": {
"browser": true,
"es6": true
},
"extends": "eslint:recommended",
"globals": {
"Atomics": "readonly",
"SharedArrayBuffer": "readonly"
},
"parserOptions": {
"ecmaVersion": 2018,
"sourceType": "module"
},
"rules": {
"accessor-pairs": "error",
"array-bracket-newline": "error",
"array-bracket-spacing": "error",
"array-callback-return": "error",
"array-element-newline": ["error", "consistent"],
"arrow-body-style": "error",
"arrow-parens": [
"error",
"always"
],
"arrow-spacing": [
"error",
{
"after": true,
"before": true
}
],
"block-scoped-var": "error",
"block-spacing": [
"error",
"always"
],
"brace-style": "off",
"callback-return": "off",
"camelcase": "error",
"capitalized-comments": [
"error",
"never"
],
"class-methods-use-this": "off",
"comma-dangle": "error",
"comma-spacing": [
"error",
{
"after": true,
"before": false
}
],
"comma-style": [
"error",
"last"
],
"complexity": "error",
"computed-property-spacing": [
"error",
"never"
],
"consistent-return": "error",
"consistent-this": "error",
"curly": "error",
"default-case": "error",
"dot-location": "error",
"dot-notation": "error",
"eol-last": "off",
"eqeqeq": "off",
"func-call-spacing": "error",
"func-name-matching": "error",
"func-names": "error",
"func-style": [
"error",
"declaration"
],
"function-paren-newline": "error",
"generator-star-spacing": "error",
"global-require": "error",
"guard-for-in": "error",
"handle-callback-err": "error",
"id-blacklist": "error",
"id-length": "error",
"id-match": "error",
"implicit-arrow-linebreak": [
"error",
"beside"
],
"indent": "off",
"indent-legacy": "off",
"init-declarations": "off",
"jsx-quotes": "error",
"key-spacing": "off",
"keyword-spacing": "off",
"line-comment-position": "error",
"linebreak-style": [
"error",
"unix"
],
"lines-around-comment": "error",
"lines-around-directive": "error",
"lines-between-class-members": "off",
"max-classes-per-file": "error",
"max-depth": "error",
"max-len": "off",
"max-lines": "error",
"max-lines-per-function": "off",
"max-nested-callbacks": "error",
"max-params": "off",
"max-statements": "off",
"max-statements-per-line": "off",
"multiline-comment-style": "error",
"new-cap": "error",
"new-parens": "error",
"newline-after-var": "off",
"newline-before-return": "error",
"newline-per-chained-call": "error",
"no-alert": "error",
"no-array-constructor": "error",
"no-async-promise-executor": "error",
"no-await-in-loop": "error",
"no-bitwise": "off",
"no-buffer-constructor": "error",
"no-caller": "error",
"no-catch-shadow": "error",
"no-confusing-arrow": "error",
"no-continue": "error",
"no-div-regex": "error",
"no-duplicate-imports": "error",
"no-else-return": "off",
"no-empty-function": "off",
"no-eq-null": "error",
"no-eval": "error",
"no-extend-native": "error",
"no-extra-bind": "error",
"no-extra-label": "error",
"no-extra-parens": "off",
"no-floating-decimal": "error",
"no-implicit-coercion": "error",
"no-implicit-globals": "off",
"no-implied-eval": "error",
"no-inline-comments": "error",
"no-invalid-this": "error",
"no-iterator": "error",
"no-label-var": "error",
"no-labels": "error",
"no-lone-blocks": "error",
"no-lonely-if": "error",
"no-loop-func": "error",
"no-magic-numbers": "off",
"no-misleading-character-class": "error",
"no-mixed-operators": "error",
"no-mixed-requires": "error",
"no-multi-assign": "error",
"no-multi-spaces": "off",
"no-multi-str": "error",
"no-multiple-empty-lines": "error",
"no-native-reassign": "error",
"no-negated-condition": "off",
"no-negated-in-lhs": "error",
"no-nested-ternary": "error",
"no-new": "error",
"no-new-func": "error",
"no-new-object": "error",
"no-new-require": "error",
"no-new-wrappers": "error",
"no-octal-escape": "error",
"no-param-reassign": "error",
"no-path-concat": "error",
"no-plusplus": "error",
"no-process-env": "error",
"no-process-exit": "error",
"no-proto": "error",
"no-prototype-builtins": "error",
"no-restricted-globals": "error",
"no-restricted-imports": "error",
"no-restricted-modules": "error",
"no-restricted-properties": "error",
"no-restricted-syntax": "error",
"no-return-assign": "error",
"no-return-await": "error",
"no-script-url": "error",
"no-self-compare": "error",
"no-sequences": "error",
"no-shadow": "off",
"no-shadow-restricted-names": "error",
"no-spaced-func": "error",
"no-sync": "error",
"no-tabs": "off",
"no-template-curly-in-string": "error",
"no-ternary": "off",
"no-throw-literal": "error",
"no-trailing-spaces": "off",
"no-undef-init": "error",
"no-undefined": "error",
"no-unmodified-loop-condition": "error",
"no-unneeded-ternary": "error",
"no-unused-expressions": "error",
"no-use-before-define": "error",
"no-useless-call": "error",
// "no-useless-catch": "error",
"no-useless-computed-key": "error",
"no-useless-concat": "error",
"no-useless-constructor": "error",
"no-useless-rename": "error",
"no-useless-return": "error",
"no-var": "error",
"no-void": "error",
"no-warning-comments": "error",
"no-whitespace-before-property": "error",
"no-with": "error",
"nonblock-statement-body-position": "error",
"object-curly-newline": "error",
"object-curly-spacing": "off",
"object-shorthand": "off",
"one-var": "off",
"one-var-declaration-per-line": "error",
"operator-assignment": "error",
"operator-linebreak": "error",
"padded-blocks": "off",
"padding-line-between-statements": "error",
"prefer-arrow-callback": "error",
"prefer-const": "off",
"prefer-destructuring": "off",
"prefer-numeric-literals": "off",
"prefer-object-spread": "error",
"prefer-promise-reject-errors": "error",
"prefer-reflect": "error",
"prefer-rest-params": "error",
"prefer-spread": "error",
"prefer-template": "error",
"quote-props": "off",
"quotes": "off",
"radix": "error",
"require-atomic-updates": "error",
"require-await": "off",
"require-jsdoc": "off",
"require-unicode-regexp": "off",
"rest-spread-spacing": "error",
"semi": "error",
"semi-spacing": "error",
"semi-style": [
"error",
"last"
],
"sort-imports": "error",
"sort-keys": "off",
"sort-vars": "error",
"space-before-blocks": "error",
"space-before-function-paren": "off",
"space-in-parens": [
"error",
"never"
],
"space-infix-ops": "error",
"space-unary-ops": [
"error",
{
"nonwords": false,
"words": false
}
],
"spaced-comment": [
"error",
"always"
],
"strict": [
"error",
"never"
],
"switch-colon-spacing": "error",
"symbol-description": "error",
"template-curly-spacing": "error",
"template-tag-spacing": "error",
"unicode-bom": [
"error",
"never"
],
"valid-jsdoc": "error",
"vars-on-top": "error",
"wrap-iife": "error",
"wrap-regex": "error",
"yield-star-spacing": "error",
"yoda": "off"
}
};

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@ -1,93 +0,0 @@
export class ConnectionView {
constructor(client, provider) {
this._provider = provider;
this._client = client;
this._client.onopen = () => { this._onConnectionOpened(); };
this._client.onclose = () => { this._onConnectionClosed(); };
this.element = document.createElement("div");
const connectBox = document.createElement("div");
this.element.appendChild(connectBox);
const urlLabel = document.createElement("span");
urlLabel.textContent = "URL:";
connectBox.appendChild(urlLabel);
this.urlTextbox = document.createElement("input");
this.urlTextbox.type = "text";
this.urlTextbox.value = window.location.href.replace(/^http/, "ws");
connectBox.appendChild(this.urlTextbox);
this.connectButton = document.createElement("input");
this.connectButton.type = "button";
this.connectButton.value = "connect";
this.connectButton.addEventListener("click", () => { this._onConnectButtonClicked(); });
connectBox.appendChild(this.connectButton);
const authenticateBox = document.createElement("div");
this.element.appendChild(authenticateBox);
const authLabel = document.createElement("span");
authLabel.textContent = "use authentication:";
authenticateBox.appendChild(authLabel);
this.authenticateCheckbox = document.createElement("input");
this.authenticateCheckbox.type = "checkbox";
authenticateBox.appendChild(this.authenticateCheckbox);
const usernameLabel = document.createElement("span");
usernameLabel.textContent = "user:";
authenticateBox.appendChild(usernameLabel);
this.usernameTextbox = document.createElement("input");
this.usernameTextbox.type = "text";
this.usernameTextbox.value = "bob";
authenticateBox.appendChild(this.usernameTextbox);
const passwordLabel = document.createElement("span");
passwordLabel.textContent = "user:";
authenticateBox.appendChild(passwordLabel);
this.passwordTextbox = document.createElement("input");
this.passwordTextbox.type = "password";
this.passwordTextbox.value = "secret";
authenticateBox.appendChild(this.passwordTextbox);
}
_onConnectButtonClicked() {
if (!this._client.isConnected()) {
let url = this.urlTextbox.value;
this._client.connectTo(url);
}
else {
this._client.disconnect();
}
}
_onAuthenticateButtonClicked() {
if (this._client.isConnected()) {
}
}
_onConnectionOpened() {
if (this.authenticateCheckbox.checked) {
const username = this.usernameTextbox.value;
const password = this.passwordTextbox.value;
const promise = this._client.authenticate("username", { username, password });
promise.then(() => { this._client.addProvider("test", this._provider); });
} else {
this._client.addProvider("test", this._provider);
}
this.connectButton.value = "disconnect";
}
_onConnectionClosed() {
this.connectButton.value = "connect";
}
}

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@ -1,122 +0,0 @@
/* eslint no-unused-vars: ["error", { "argsIgnorePattern": "^_" }] */
import { BadState } from "./webfuse/bad_state.js";
import { FileMode } from "./webfuse/file_mode.js";
import { Provider } from "./webfuse/provider.js";
export class FileSystemProvider extends Provider {
constructor(root) {
super();
this.root = root;
this._inodes = { };
this._walk(this.root, (entry) => { this._inodes[entry.inode] = entry; });
}
_walk(node, callback) {
callback(node);
const entries = node.entries;
if (entries) {
for(let entry of Object.entries(entries)) {
this._walk(entry[1], callback);
}
}
}
async lookup(parent, name) {
const parentEntry = this._inodes[parent];
const entry = (parentEntry && parentEntry.entries && parentEntry.entries[name]) || null;
if (entry) {
return {
inode: entry.inode,
mode: entry.mode || parseInt("755", 8),
type: entry.type || "file",
size: entry.size || (entry.contents && entry.contents.length) || 0,
atime: entry.atime || 0,
mtime: entry.mtime || 0,
ctime: entry.ctime || 0
};
}
else {
throw new BadState(BadState.NO_ENTRY);
}
}
async getattr(inode) {
let entry = this._inodes[inode];
if (entry) {
return {
mode: entry.mode || parseInt("755", 8),
type: entry.type || "file",
size: entry.size || (entry.contents && entry.contents.length) || 0,
atime: entry.atime || 0,
mtime: entry.mtime || 0,
ctime: entry.ctime || 0
};
}
else {
throw new BadState(BadState.NO_ENTRY);
}
}
async readdir(inode) {
let entry = this._inodes[inode];
if ((entry) && ("dir" === entry.type)) {
let result = [
{name: ".", inode: entry.inode},
{name: "..", inode: entry.inode}
];
for(let subdir of Object.entries(entry.entries)) {
const name = subdir[0];
const inode = subdir[1].inode;
result.push({name, inode});
}
return result;
}
else {
throw new BadState(BadState.NO_ENTRY);
}
}
async open(inode, mode) {
let entry = this._inodes[inode];
if (entry.type === "file") {
if ((mode & FileMode.ACCESS_MODE) === FileMode.READONLY) {
return {handle: 1337};
}
else {
throw new BadState(BadState.NO_ACCESS);
}
}
else {
throw new BadState(BadState.NO_ENTRY);
}
}
close(_inode, _handle, _mode) {
// do nothing
return true;
}
async read(inode, handle, offset, length) {
let entry = this._inodes[inode];
if (entry.type === "file") {
const end = Math.min(offset + length, entry.contents.length);
const data = (offset < entry.contents.length) ? entry.contents.substring(offset, end) : "";
return data;
}
else {
throw new BadState(BadState.NO_ENTRY);
}
}
}

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@ -1,11 +0,0 @@
{
"name": "webfuse-provider",
"version": "0.2.0",
"description": "Provider for websocket filesystem (webfuse)",
"main": "startup.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "Falk Werner",
"license": "LGPL-3.0"
}

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@ -1,25 +0,0 @@
import { Client } from "./webfuse/client.js";
import { ConnectionView } from "./connection_view.js";
import { FileSystemProvider } from "./filesystem_provider.js";
function mode(value) {
return parseInt(value, 8);
}
function startup() {
const provider = new FileSystemProvider({
inode: 1,
mode: mode("0755"),
type: "dir",
entries: {
"hello.txt" : { inode: 2, mode: mode("0444"), type: "file", contents: "Hello, World!"},
"say_hello.sh": { inode: 3, mode: mode("0555"), type: "file", contents: "#!/bin/sh\necho hello\n"}
}
});
const client = new Client();
const connectionView = new ConnectionView(client, provider);
document.getElementById('connection').appendChild(connectionView.element);
}
window.onload = startup;

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@ -1,15 +0,0 @@
export class BadState extends Error {
static get BAD() { return 1; }
static get NOT_IMPLEMENTED() { return 2; }
static get TIMEOUT() { return 3; }
static get FORMAT() { return 4; }
static get NO_ENTRY() { return 101; }
static get NO_ACCESS() { return 102; }
constructor(code) {
super("Bad State");
this.code = code;
}
}

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@ -1,223 +0,0 @@
import { BadState } from "./bad_state.js";
export class Client {
static get _PROTOCOL() { return "fs"; }
constructor(provider) {
this._provider = { };
this._pendingRequests = {};
this._id = 0;
this._ws = null;
this.onopen = () => { };
this.onclose = () => { };
this.onerror = () => { };
}
connectTo(url) {
this.disconnect();
this._ws = new WebSocket(url, Client._PROTOCOL);
this._ws.onopen = this.onopen;
this._ws.onclose = this.onclose;
this._ws.onerror = this.onerror;
this._ws.onmessage = (message) => {
this._onmessage(message);
};
}
_invokeRequest(method, params) {
this._id += 1;
const id = this._id;
const request = {method, params, id};
return new Promise((resolve, reject) => {
this._pendingRequests[id] = {resolve, reject};
this._ws.send(JSON.stringify(request));
});
}
authenticate(type, credentials) {
return this._invokeRequest("authenticate", [type, credentials]);
}
addProvider(name, provider) {
this._provider[name] = provider;
const request = {
"method": "add_filesystem",
"params": [name],
"id": 23
};
this._ws.send(JSON.stringify(request));
}
disconnect() {
if (this._ws) {
this._ws.close();
this._ws = null;
}
}
isConnected() {
return ((this._ws) && (this._ws.readyState === WebSocket.OPEN));
}
_isRequest(request) {
const method = request.method;
return (("string" === typeof(method)) && ("params" in request));
}
_isResponse(response) {
const id = response.id;
return (("number" === typeof(id)) && (("result" in response) || ("error" in response)));
}
_removePendingRequest(id) {
let result = null;
if (id in this._pendingRequests) {
result = this._pendingRequests[id];
Reflect.deleteProperty(this._pendingRequests, id);
}
return result;
}
_onmessage(message) {
try {
const data = JSON.parse(message.data);
if (this._isRequest(data)) {
const method = data.method;
const id = data.id;
const params = data.params;
if ("number" === typeof(id)) {
this._invoke(method, params, id);
}
else {
this._notify(method, params);
}
}
else if (this._isResponse(data)) {
const id = data.id;
const result = data.result;
const error = data.error;
const request = this._removePendingRequest(id);
if (request) {
if (result) {
request.resolve(result);
}
else {
request.reject(error);
}
}
}
}
catch (ex) {
// swallow
}
}
_invoke(method, params, id) {
this._invokeAsync(method, params).
then((result) => {
const response = { result, id };
this._ws.send(JSON.stringify(response));
}).
catch((ex) => {
const code = ex.code || BadState.BAD;
const response = {error: {code}, id};
this._ws.send(JSON.stringify(response));
});
}
async _invokeAsync(method, params) {
switch(method)
{
case "lookup":
return this._lookup(params);
case "getattr":
return this._getattr(params);
case "readdir":
return this._readdir(params);
case "open":
return this._open(params);
case "read":
return this._read(params);
default:
throw new BadState(BadState.NOT_IMPLEMENTED);
}
}
_notify(method, params) {
switch(method) {
case 'close':
this._close(params);
break;
default:
throw new Error(`Invalid method: "${method}"`);
}
}
_getProvider(name) {
if (name in this._provider) {
return this._provider[name];
}
else {
throw new Error('Unknown provider');
}
}
async _lookup([providerName, parent, name]) {
const provider = this._getProvider(providerName);
return provider.lookup(parent, name);
}
async _getattr([providerName, inode]) {
const provider = this._getProvider(providerName);
return provider.getattr(inode);
}
async _readdir([providerName, inode]) {
const provider = this._getProvider(providerName);
return provider.readdir(inode);
}
async _open([providerName, inode, mode]) {
const provider = this._getProvider(providerName);
return provider.open(inode, mode);
}
_close([providerName, inode, handle, mode]) {
const provider = this._getProvider(providerName);
provider.close(inode, handle, mode);
}
async _read([providerName, inode, handle, offset, length]) {
const provider = this._getProvider(providerName);
const data = await provider.read(inode, handle, offset, length);
if ("string" === typeof(data)) {
return {
data: btoa(data),
format: "base64",
count: data.length
};
}
else {
throw new BadState(BadState.BAD);
}
}
}

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@ -1,10 +0,0 @@
export class FileMode {
static get ACCESS_MODE() { return 0x003; }
static get READONLY() { return 0x000; }
static get WRITEONLY() { return 0x001; }
static get READWRITE() { return 0x002; }
static get CREATE() { return 0x040; }
static get EXCLUSIVE() { return 0x080; }
static get TRUNKATE() { return 0x200; }
static get APPEND() { return 0x400; }
}

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@ -1,30 +0,0 @@
/* eslint no-unused-vars: ["error", { "argsIgnorePattern": "^_" }] */
import { BadState } from "./bad_state.js";
export class Provider {
async lookup(_parent, _name) {
throw new BadState(BadState.NOT_IMPLEMENTED);
}
async getattr(_inode) {
throw new BadState(BadState.NOT_IMPLEMENTED);
}
async readdir(_inode) {
throw new BadState(BadState.NOT_IMPLEMENTED);
}
async open(_inode, _mode) {
throw new BadState(BadState.NOT_IMPLEMENTED);
}
close(_inode, _handle, _mode) {
// empty
}
async read(_inode, _handle, _offset, _length) {
throw new BadState(BadState.NOT_IMPLEMENTED);
}
}

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@ -1,47 +0,0 @@
html, body {
font-family: monospace;
background-color: #c0c0c0;
}
.page {
margin-left: 50px;
margin-right: 50px;
width: auto;
}
.window {
border: 1px solid black;
background-color: black;
border-radius: 5px;
padding: 10px;
margin-bottom: 25px;
color: white;
}
.window .title {
text-align: center;
color: #dba329;
font-weight: bold;
padding-bottom: 10px;
margin-bottom: 10px;
border-bottom: 1px solid #dba329;
}
.commands {
text-align: right;
}
.content {
column-count: 2;
column-width: 50%;
}
.content > div {
display: inline-block;
width: 100%;
}
#connection {
text-align: center;
}

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@ -1,46 +0,0 @@
#ifndef USERDB_H
#define USERDB_H
#ifndef __cplusplus
#include <stdbool.h>
#endif
#ifdef __cplusplus
extern "C"
{
#endif
struct userdb;
extern struct userdb * userdb_create(
char const * pepper);
extern void userdb_dispose(struct userdb * db);
extern bool userdb_save(
struct userdb * db,
char const * filename);
extern bool userdb_load(
struct userdb * db,
char const * filename);
extern void userdb_add(
struct userdb * db,
char const * username,
char const * password);
extern void userdb_remove(
struct userdb * db,
char const * user);
extern bool userdb_check(
struct userdb * db,
char const * username,
char const * password);
#ifdef __cplusplus
}
#endif
#endif

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@ -1,277 +0,0 @@
#include "userdb.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <jansson.h>
#include <openssl/rand.h>
#include <openssl/evp.h>
#define USERDB_HASH_ALGORITHM "sha512"
#define USERDB_MAJOR 1
#define USERDB_MINOR 0
#define USERDB_SALT_SIZE 32
struct userdb
{
json_t * users;
char * pepper;
char * hash_algorithm;
};
static bool is_compatible(json_t * meta)
{
bool result = false;
if (json_is_object(meta))
{
json_t * type = json_object_get(meta, "type");
json_t * major = json_object_get(meta, "major");
json_t * minor = json_object_get(meta, "minor");
json_t * hash_algorithm = json_object_get(meta, "hash_algorithm");
result = (
json_is_string(type) &&
(0 == strcmp(json_string_value(type), "wf-userdb")) &&
json_is_integer(major) &&
(USERDB_MAJOR == json_integer_value(major)) &&
json_is_integer(minor) &&
json_is_string(hash_algorithm)
);
if (result)
{
char const * algorithm = json_string_value(hash_algorithm);
result = (NULL != EVP_get_digestbyname(algorithm));
}
}
return result;
}
static char hex_char(unsigned char value)
{
switch (value)
{
case 0x00: return '0';
case 0x01: return '1';
case 0x02: return '2';
case 0x03: return '3';
case 0x04: return '4';
case 0x05: return '5';
case 0x06: return '6';
case 0x07: return '7';
case 0x08: return '8';
case 0x09: return '9';
case 0x0a: return 'a';
case 0x0b: return 'b';
case 0x0c: return 'c';
case 0x0d: return 'd';
case 0x0e: return 'e';
case 0x0f: return 'f';
default: return '?';
}
}
static char * to_hex(unsigned char const * value, size_t length)
{
char * result = malloc((2 * length) + 1);
if (NULL != result)
{
for (size_t i = 0, j = 0; i < length; i++, j+=2)
{
unsigned char high = (value[i] >> 4) & 0x0f;
unsigned char low = value[i] & 0x0f;
result[j ] = hex_char(high);
result[j + 1] = hex_char(low);
}
result[2 * length] = '\0';
}
return result;
}
static char * generate_salt(void)
{
unsigned char buffer[USERDB_SALT_SIZE];
int rc = RAND_bytes(buffer, USERDB_SALT_SIZE);
if (1 != rc)
{
fprintf(stderr, "fatal: failed to generate salt (OpenSSL RAND_bytes failed)\n");
exit(EXIT_FAILURE);
}
return to_hex(buffer, USERDB_SALT_SIZE);
}
static char * compute_hash(
struct userdb * db,
char const * password,
char const * salt)
{
EVP_MD const * digest = EVP_get_digestbyname(db->hash_algorithm);
if (NULL == digest)
{
fprintf(stderr, "error: hash algorithm %s not supported\n", db->hash_algorithm);
return NULL;
}
char * result = NULL;
unsigned int hash_size = EVP_MD_size(digest);
unsigned char * hash = malloc(hash_size);
if (NULL != hash)
{
EVP_MD_CTX * context = EVP_MD_CTX_new();
EVP_DigestInit_ex(context, digest, NULL);
EVP_DigestUpdate(context, password, strlen(password));
EVP_DigestUpdate(context, salt, strlen(salt));
EVP_DigestUpdate(context, db->pepper, strlen(db->pepper));
EVP_DigestFinal_ex(context, hash, &hash_size);
EVP_MD_CTX_free(context);
result = to_hex(hash, hash_size);
free(hash);
}
return result;
}
struct userdb * userdb_create(
char const * pepper)
{
struct userdb * db = malloc(sizeof(struct userdb));
if (NULL != db)
{
db->users = json_object();
db->pepper = strdup(pepper);
db->hash_algorithm = strdup(USERDB_HASH_ALGORITHM);
}
return db;
}
void userdb_dispose(
struct userdb * db)
{
json_decref(db->users);
free(db->pepper);
free(db->hash_algorithm);
free(db);
}
bool userdb_save(
struct userdb * db,
char const * filename)
{
json_t * container = json_object();
json_t * meta = json_object();
json_object_set_new(meta, "type", json_string("wf-userdb"));
json_object_set_new(meta, "major", json_integer(USERDB_MAJOR));
json_object_set_new(meta, "minor", json_integer(USERDB_MINOR));
json_object_set_new(meta, "hash_algorithm", json_string(db->hash_algorithm));
json_object_set_new(container, "meta", meta);
json_object_set(container, "users", db->users);
int result = json_dump_file(container, filename, JSON_INDENT(2));
json_decref(container);
return (0 == result);
}
bool userdb_load(
struct userdb * db,
char const * filename)
{
bool result = false;
json_t * container = json_load_file(filename, 0, NULL);
if (NULL != container)
{
json_t * meta = json_object_get(container, "meta");
json_t * users = json_object_get(container, "users");
if ((is_compatible(meta)) && (json_is_object(users))) {
json_t * hash_algorithm = json_object_get(meta, "hash_algorithm");
free(db->hash_algorithm);
db->hash_algorithm = strdup(json_string_value(hash_algorithm));
json_decref(db->users);
json_incref(users);
db->users = users;
result = true;
}
json_decref(container);
}
return result;
}
void userdb_add(
struct userdb * db,
char const * username,
char const * password)
{
char * salt = generate_salt();
char * hash = compute_hash(db, password, salt);
json_t * user = json_object();
json_object_set_new(user, "password_hash", json_string(hash));
json_object_set_new(user, "salt", json_string(salt));
json_object_set_new(db->users, username, user);
free(salt);
free(hash);
}
void userdb_remove(
struct userdb * db,
char const * user)
{
json_object_del(db->users, user);
}
static char const * json_object_get_string(
json_t * object,
char const * key)
{
char const * result = NULL;
json_t * string_holder = json_object_get(object, key);
if (json_is_string(string_holder))
{
result = json_string_value(string_holder);
}
return result;
}
bool userdb_check(
struct userdb * db,
char const * username,
char const * password)
{
bool result = false;
json_t * user = json_object_get(db->users, username);
if (json_is_object(user))
{
char const * salt = json_object_get_string(user, "salt");
char const * hash = json_object_get_string(user, "password_hash");
char * computed_hash = compute_hash(db, password, salt);
result = (0 == strcmp(computed_hash, hash));
free(computed_hash);
}
return result;
}

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@ -1,304 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <unistd.h>
#include <getopt.h>
#include <openssl/conf.h>
#include <openssl/opensslv.h>
#include <openssl/engine.h>
#include <openssl/evp.h>
#include <jansson.h>
#include <userdb.h>
struct args
{
char * file;
char * command;
char * username;
char * password;
char * pepper;
bool show_help;
};
typedef int command_invoke_fn(
struct args * args);
struct command
{
char const * name;
command_invoke_fn * invoke;
};
static void print_usage(void)
{
printf(
"webfuse-passwd, Copyright (c) 2019, webfuse authors <https://github.com/falk-werner/webfuse>\n"
"Manage webfuse passwd file\n"
"\n"
"Usage: webfuse-passwd -f <file> -c <command> [-u <username>] [-p <password>] [-P <pepper>]\n"
"\n"
"Options:\n"
"\t-f, --file Path of wf passwd file\n"
"\t-c, --command Command to execute\n"
"\t-u, --username Name of user\n"
"\t-p, --password Password of user\n"
"\t-P, --pepper pepper\n"
"\t-h, --help Shows this message\n"
"\n"
"Commands:\n"
"\tcreate Creates an empty passwd file (or cleans an existing)\n"
"\t Example: webfuse-passwd -f passwd.json -c create\n"
"\tadd Adds or replaces a user\n"
"\t Example: webfuse-passwd -f passwd.json -c add -u bob -p secret\n"
"\tremove Removes a user\n"
"\t Example: webfuse-passwd -f passwd.json -c remove -u bob\n"
"\tcheck Checks password of a user\n"
"\t Example: webfuse-passwd -f passwd.json -c check -u bob -p secret\n"
"\n"
);
}
static int parse_args(struct args * args, int argc, char * argv[])
{
static struct option const options[] =
{
{"file", required_argument, NULL, 'f'},
{"command", required_argument, NULL, 'c'},
{"username", required_argument, NULL, 'u'},
{"password", required_argument, NULL, 'p'},
{"Pepper", required_argument, NULL, 'P'},
{"help", required_argument, NULL, 'h'},
{NULL, 0, NULL, 0}
};
int result = EXIT_SUCCESS;
bool finished = false;
while ((!finished) && (EXIT_SUCCESS == result))
{
int option_index = 0;
int const c = getopt_long(argc, argv, "f:c:u:p:P:h", options, &option_index);
switch (c)
{
case -1:
finished = true;
break;
case 'h':
args->show_help = true;
finished = true;
break;
case 'f':
free(args->file);
args->file = strdup(optarg);
break;
case 'c':
free(args->command);
args->command = strdup(optarg);
break;
case 'u':
free(args->username);
args->username = strdup(optarg);
break;
case 'p':
free(args->password);
args->password = strdup(optarg);
break;
case 'P':
free(args->pepper);
args->pepper = strdup(optarg);
break;
default:
fprintf(stderr, "error: unknown argument\n");
result = EXIT_FAILURE;
break;
}
}
if ((result == EXIT_SUCCESS) && (!args->show_help))
{
if (NULL == args->file)
{
fprintf(stderr, "error: missing file\n");
args->show_help = true;
result = EXIT_FAILURE;
}
else if (NULL == args->command)
{
fprintf(stderr, "error: missing command\n");
args->show_help = true;
result = EXIT_FAILURE;
}
}
return result;
}
static void args_init(struct args * args)
{
args->file = NULL;
args->command = NULL;
args->username = NULL;
args->password = NULL;
args->pepper = strdup("");
args->show_help = false;
}
static int create_passwd(struct args * args)
{
struct userdb * db = userdb_create(args->pepper);
bool result = userdb_save(db, args->file);
userdb_dispose(db);
return (result) ? EXIT_SUCCESS : EXIT_FAILURE;
}
static int add_user(struct args * args)
{
if (NULL == args->username)
{
fprintf(stderr, "error: missing username");
args->show_help = true;
return EXIT_FAILURE;
}
if (NULL == args->password)
{
fprintf(stderr, "error: missing password");
args->show_help = true;
return EXIT_FAILURE;
}
struct userdb * db = userdb_create(args->pepper);
userdb_load(db, args->file);
userdb_add(db, args->username, args->password);
bool result = userdb_save(db, args->file);
userdb_dispose(db);
return (result) ? EXIT_SUCCESS : EXIT_FAILURE;
}
static int remove_user(struct args * args)
{
if (NULL == args->username)
{
fprintf(stderr, "error: missing username");
args->show_help = true;
return EXIT_FAILURE;
}
struct userdb * db = userdb_create(args->pepper);
userdb_load(db, args->file);
userdb_remove(db, args->username);
bool result = userdb_save(db, args->file);
userdb_dispose(db);
return (result) ? EXIT_SUCCESS : EXIT_FAILURE;
}
static int check_password(struct args * args)
{
if (NULL == args->username)
{
fprintf(stderr, "error: missing username");
args->show_help = true;
return EXIT_FAILURE;
}
if (NULL == args->password)
{
fprintf(stderr, "error: missing password");
args->show_help = true;
return EXIT_FAILURE;
}
struct userdb * db = userdb_create(args->pepper);
userdb_load(db, args->file);
bool result = userdb_check(db, args->username, args->password);
userdb_dispose(db);
printf("%s\n", (result) ? "OK" : "FAILURE");
return (result) ? EXIT_SUCCESS : EXIT_FAILURE;
}
static int invoke_invalid_command(struct args * args)
{
(void) args;
fprintf(stderr, "error: unknown command\n");
return EXIT_FAILURE;
}
static struct command const commands[] =
{
{"create", &create_passwd},
{"add", &add_user},
{"remove", &remove_user},
{"check", &check_password},
{NULL, NULL}
};
static struct command const invalid_command =
{
"<invalid>",
&invoke_invalid_command
};
static struct command const * get_command(char const * name)
{
for(size_t i = 0; NULL != commands[i].name; i++)
{
if (0 == strcmp(name, commands[i].name))
{
return &commands[i];
}
}
return &invalid_command;
}
static void args_cleanup(struct args * args)
{
free(args->file);
free(args->command);
free(args->username);
free(args->password);
free(args->pepper);
}
static void openssl_cleanup(void)
{
FIPS_mode_set(0);
ENGINE_cleanup();
CONF_modules_unload(1);
EVP_cleanup();
CRYPTO_cleanup_all_ex_data();
ERR_free_strings();
}
int main(int argc, char * argv[])
{
OPENSSL_init();
OPENSSL_add_all_algorithms_conf();
struct args args;
args_init(&args);
int result = parse_args(&args, argc, argv);
if ((EXIT_SUCCESS == result) && (!args.show_help))
{
struct command const * command = get_command(args.command);
result = command->invoke(&args);
}
if (args.show_help)
{
print_usage();
}
args_cleanup(&args);
openssl_cleanup();
return result;
}

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@ -1,385 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <stdbool.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <getopt.h>
#include "webfuse_provider.h"
#define SERVICE_TIMEOUT (1 * 1000)
struct config
{
char * url;
struct wfp_client_config * client_config;
bool show_help;
};
enum fs_entry_type
{
FS_FILE,
FS_DIR
};
struct fs_entry
{
ino_t parent;
ino_t inode;
char const * name;
int mode;
enum fs_entry_type type;
size_t content_length;
char const * content;
};
struct fs
{
struct fs_entry const * entries;
};
static void show_help()
{
printf(
"webfuse-provider, Copyright (c) 2019, webfuse authors <https://github.com/falk-werner/webfuse>\n"
"Example for websocket file system provider\n"
"\n"
"Usage: webfuse-provider -u <url> [-k <key_path>] [-c <cert_path>]\n"
"\n"
"Options:\n"
"\t-u, --url URL of webfuse server (required)\n"
"\t-k, --key_path Path to private key of provider (default: not set, TLS disabled)\n"
"\t-c, --cert_path Path to certificate of provider (defautl: not set, TLS disabled)\n"
"\t-h, --help prints this message\n"
"\n"
"Example:\n"
"\twebfuse-provider -u ws://localhost:8080/\n"
"\n"
);
}
static int parse_arguments(
int argc,
char* argv[],
struct config * config)
{
static struct option const options[] =
{
{"url", required_argument, NULL, 'u'},
{"key_path", required_argument, NULL, 'k'},
{"cert_path", required_argument, NULL, 'c'},
{"help", no_argument, NULL, 'h'},
{NULL, 0, NULL, 0}
};
int result = EXIT_SUCCESS;
bool finished = false;
while (!finished)
{
int option_index = 0;
int const c = getopt_long(argc, argv, "u:k:c:h", options, &option_index);
switch (c)
{
case -1:
finished = true;
break;
case 'h':
config->show_help = true;
finished = true;
break;
case 'u':
free(config->url);
config->url = strdup(optarg);
break;
case 'k':
wfp_client_config_set_keypath(config->client_config, optarg);
break;
case 'c':
wfp_client_config_set_certpath(config->client_config, optarg);
break;
default:
fprintf(stderr, "error: unknown argument\n");
finished = true;
result = EXIT_FAILURE;
break;
}
if (NULL == config->url)
{
fprintf(stderr, "error: missing required argument \"-u\"\n");
result = EXIT_FAILURE;
}
if (result != EXIT_SUCCESS)
{
config->show_help = true;
}
}
return result;
}
static struct fs_entry const * fs_getentry(
struct fs * fs,
ino_t inode)
{
for (size_t i = 0; 0 != fs->entries[i].inode; i++)
{
struct fs_entry const * entry = &fs->entries[i];
if (inode == entry->inode)
{
return entry;
}
}
return NULL;
}
static struct fs_entry const * fs_getentry_byname(
struct fs * fs,
ino_t parent,
char const * name)
{
for( size_t i = 0; 0 != fs->entries[i].inode; i++)
{
struct fs_entry const * entry = &fs->entries[i];
if ((parent == entry->parent) && (0 == strcmp(name, entry->name)))
{
return entry;
}
}
return NULL;
}
static void fs_stat(
struct fs_entry const * entry,
struct stat * stat)
{
memset(stat, 0, sizeof(struct stat));
stat->st_ino = entry->inode;
stat->st_mode = entry->mode;
if (FS_DIR == entry->type)
{
stat->st_mode |= S_IFDIR;
}
if (FS_FILE == entry->type)
{
stat->st_mode |= S_IFREG;
stat->st_size = entry->content_length;
}
}
static void fs_lookup(
struct wfp_request * request,
ino_t parent,
char const * name,
void * user_data)
{
struct fs * fs = (struct fs*) user_data;
struct fs_entry const * entry = fs_getentry_byname(fs, parent, name);
if (NULL != entry)
{
struct stat stat;
fs_stat(entry, &stat);
wfp_respond_lookup(request, &stat);
}
else
{
wfp_respond_error(request, WF_BAD_NOENTRY);
}
}
static void fs_getattr(
struct wfp_request * request,
ino_t inode,
void * user_data)
{
struct fs * fs = (struct fs*) user_data;
struct fs_entry const * entry = fs_getentry(fs, inode);
if (NULL != entry)
{
struct stat stat;
fs_stat(entry, &stat);
wfp_respond_getattr(request, &stat);
}
else
{
wfp_respond_error(request, WF_BAD_NOENTRY);
}
}
static void fs_readdir(
struct wfp_request * request,
ino_t directory,
void * user_data)
{
struct fs * fs = (struct fs*) user_data;
struct fs_entry const * dir = fs_getentry(fs, directory);
if ((NULL != dir) && (FS_DIR == dir->type))
{
struct wfp_dirbuffer * buffer = wfp_dirbuffer_create();
wfp_dirbuffer_add(buffer, ".", dir->inode);
wfp_dirbuffer_add(buffer, "..", dir->inode);
for(size_t i = 0; 0 != fs->entries[i].inode; i++)
{
struct fs_entry const * entry = &fs->entries[i];
if (directory == entry->parent)
{
wfp_dirbuffer_add(buffer, entry->name, entry->inode);
}
}
wfp_respond_readdir(request, buffer);
wfp_dirbuffer_dispose(buffer);
}
else
{
wfp_respond_error(request, WF_BAD_NOENTRY);
}
}
static void fs_open(
struct wfp_request * request,
ino_t inode,
int flags,
void * user_data)
{
struct fs * fs = (struct fs*) user_data;
struct fs_entry const * entry = fs_getentry(fs, inode);
if ((NULL != entry) && (FS_FILE == entry->type))
{
if (O_RDONLY == (flags & O_ACCMODE))
{
wfp_respond_open(request, 0U);
}
else
{
wfp_respond_error(request, WF_BAD_ACCESS_DENIED);
}
}
else
{
wfp_respond_error(request, WF_BAD_NOENTRY);
}
}
static size_t min(size_t const a, size_t const b)
{
return (a < b) ? a : b;
}
static void fs_read(
struct wfp_request * request,
ino_t inode,
uint32_t handle,
size_t offset,
size_t length,
void * user_data)
{
(void) handle;
struct fs * fs = (struct fs*) user_data;
struct fs_entry const * entry = fs_getentry(fs, inode);
if ((NULL != entry) && (FS_FILE == entry->type))
{
if (entry->content_length > offset)
{
size_t const remaining = entry->content_length - offset;
size_t const count = min(remaining, length);
wfp_respond_read(request, &entry->content[offset], count);
}
else
{
wfp_respond_error(request, WF_BAD);
}
}
else
{
wfp_respond_error(request, WF_BAD_NOENTRY);
}
}
static volatile bool shutdown_requested = false;
static void on_interrupt(int signal_id)
{
(void) signal_id;
shutdown_requested = true;
}
int main(int argc, char* argv[])
{
struct config config;
config.url = NULL;
config.show_help = false;
config.client_config = wfp_client_config_create();
int result = parse_arguments(argc, argv, &config);
if (EXIT_SUCCESS == result)
{
static struct fs_entry const entries[]=
{
{.parent = 0, .inode = 1, .name = "<root>", .mode = 0555, .type = FS_DIR},
{
.parent = 1,
.inode = 2,
.name = "hello.txt",
.mode = 0444,
.type = FS_FILE,
.content="hello, world!",
.content_length = 13,
},
{.parent = 0, .inode = 0, .name = NULL}
};
struct fs fs =
{
.entries = entries
};
signal(SIGINT, &on_interrupt);
wfp_client_config_set_userdata(config.client_config, &fs);
wfp_client_config_set_onlookup(config.client_config, &fs_lookup);
wfp_client_config_set_ongetattr(config.client_config, &fs_getattr);
wfp_client_config_set_onreaddir(config.client_config, &fs_readdir);
wfp_client_config_set_onopen(config.client_config, &fs_open);
wfp_client_config_set_onread(config.client_config, &fs_read);
struct wfp_client * client = wfp_client_create(config.client_config);
wfp_client_connect(client, config.url);
while (!shutdown_requested)
{
wfp_client_service(client, SERVICE_TIMEOUT);
}
wfp_client_dispose(client);
}
if (config.show_help)
{
show_help();
}
free(config.url);
wfp_client_config_dispose(config.client_config);
return result;
}

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@ -1,109 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <signal.h>
#include "webfuse_provider.h"
#define SERVICE_TIMEOUT (1 * 1000)
struct args
{
char const * url;
bool show_help;
};
static int
parse_args(
struct args * args,
int argc,
char * argv[])
{
int result = EXIT_FAILURE;
args->show_help = true;
args->url = NULL;
if (2 == argc)
{
result = EXIT_SUCCESS;
char const * url = argv[1];
if ((0 != strcmp(url, "-h")) && (0 != strcmp(url, "--help")))
{
args->show_help = false;
args->url = url;
}
}
else
{
fprintf(stderr, "error: missing argument\n");
}
return result;
}
static volatile bool shutdown_requested = false;
static void on_interrupt(int signal_id)
{
(void) signal_id;
shutdown_requested = true;
}
static void print_usage()
{
printf(
"static-filesystem-provider Copyright (c) 2019, webfuse authors <https://github.com/falk-werner/webfuse>\n"
"Example of webfuse static filesystem provider\n"
"\n"
"Usage: static-filesystem-provider <url>\n"
"\n"
"Arguments:\n"
"\t<url> URL of webfuse server (required)\n"
"\t-h, --help prints this message\n"
"\n"
"Example:\n"
"\tstatic-filesystem-provider ws://localhost:8080/\n"
"\n"
);
}
int main(int argc, char* argv[])
{
signal(SIGINT, &on_interrupt);
struct args args;
int result = parse_args(&args, argc, argv);
if ((EXIT_SUCCESS == result) && (!args.show_help))
{
struct wfp_client_config * config = wfp_client_config_create();
struct wfp_static_filesystem * fs = wfp_static_filesystem_create(config);
wfp_static_filesystem_add_text(fs, "brummni/hello_world.txt", 0444, "Hello, World!\n");
wfp_static_filesystem_add_text(fs, "brummni/hello_bob.txt", 0444, "Hello, Bob!\n");
wfp_static_filesystem_add_text(fs, "brummni/hello_bob.txt", 0444, "Hello, Alice!\n");
wfp_static_filesystem_add_text(fs, "bla/hello_world.txt", 0444, "Hello, World!\n");
wfp_static_filesystem_add_text(fs, "foo.txt", 0444, "foo\n");
wfp_static_filesystem_add_text(fs, "bar.txt", 0444, "bar\n");
struct wfp_client * client = wfp_client_create(config);
wfp_client_connect(client, args.url);
while (!shutdown_requested)
{
wfp_client_service(client, SERVICE_TIMEOUT);
}
wfp_client_dispose(client);
wfp_static_filesystem_dispose(fs);
wfp_client_config_dispose(config);
}
if (args.show_help)
{
print_usage();
}
return result;
}