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Falk Werner
2020-06-15 19:23:31 +02:00
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examples/.gitignore vendored Normal file
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/build/
/.vscode/
/subprojects/*
!/subprojects/*.wrap

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examples/.travis.yml Normal file
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dist: bionic
language: c
compiler:
- gcc
addons:
apt:
update: true
packages:
- build-essential
- cmake
- pkgconf
- wget
- ca-certificates
- python3
- python3-pip
- python3-setuptools
- python3-wheel
- ninja-build
before_install:
- sudo pip3 install --system meson
before_script:
- meson build
script:
- cd build
- ninja

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GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.
0. Additional Definitions.
As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.
"The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.
An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.
A "Combined Work" is a work produced by combining or linking an
Application with the Library. The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".
The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.
The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.
1. Exception to Section 3 of the GNU GPL.
You may convey a covered work under sections 3 and 4 of this License
without being bound by section 3 of the GNU GPL.
2. Conveying Modified Versions.
If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
facility is invoked), then you may convey a copy of the modified
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a) under this License, provided that you make a good faith effort to
ensure that, in the event an Application does not supply the
function or data, the facility still operates, and performs
whatever part of its purpose remains meaningful, or
b) under the GNU GPL, with none of the additional permissions of
this License applicable to that copy.
3. Object Code Incorporating Material from Library Header Files.
The object code form of an Application may incorporate material from
a header file that is part of the Library. You may convey such object
code under terms of your choice, provided that, if the incorporated
material is not limited to numerical parameters, data structure
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(ten or fewer lines in length), you do both of the following:
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You may convey a Combined Work under terms of your choice that,
taken together, effectively do not restrict modification of the
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the following:
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c) For a Combined Work that displays copyright notices during
execution, include the copyright notice for the Library among
these notices, as well as a reference directing the user to the
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d) Do one of the following:
0) Convey the Minimal Corresponding Source under the terms of this
License, and the Corresponding Application Code in a form
suitable for, and under terms that permit, the user to
recombine or relink the Application with a modified version of
the Linked Version to produce a modified Combined Work, in the
manner specified by section 6 of the GNU GPL for conveying
Corresponding Source.
1) Use a suitable shared library mechanism for linking with the
Library. A suitable mechanism is one that (a) uses at run time
a copy of the Library already present on the user's computer
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of the Library that is interface-compatible with the Linked
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e) Provide Installation Information, but only if you would otherwise
be required to provide such information under section 6 of the
GNU GPL, and only to the extent that such information is
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Combined Work produced by recombining or relinking the
Application with a modified version of the Linked Version. (If
you use option 4d0, the Installation Information must accompany
the Minimal Corresponding Source and Corresponding Application
Code. If you use option 4d1, you must provide the Installation
Information in the manner specified by section 6 of the GNU GPL
for conveying Corresponding Source.)
5. Combined Libraries.
You may place library facilities that are a work based on the
Library side by side in a single library together with other library
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License, and convey such a combined library under terms of your
choice, if you do both of the following:
a) Accompany the combined library with a copy of the same work based
on the Library, uncombined with any other library facilities,
conveyed under the terms of this License.
b) Give prominent notice with the combined library that part of it
is a work based on the Library, and explaining where to find the
accompanying uncombined form of the same work.
6. Revised Versions of the GNU Lesser General Public License.
The Free Software Foundation may publish revised and/or new versions
of the GNU Lesser General Public License from time to time. Such new
versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the
Library as you received it specifies that a certain numbered version
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applies to it, you have the option of following the terms and
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Library.

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[![Build Status](https://travis-ci.org/falk-werner/webfuse-provider.svg?branch=master)](https://travis-ci.org/falk-werner/webfuse-provider)
# webfuse-provider
Reference implementation of webfuse provider
## Build and run
To install dependecies, see below.
meson build
cd build
ninja
./webfuse-provider
## Dependencies
- [webfuse](https://github.com/falk-werner/webfuse)
- [libwebsockets](https://libwebsockets.org/)
- [jansson](https://github.com/akheron/jansson)
All dependencies are bundled using meson wrap files.

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project('webfuse-provider', version: '0.1.0', license: 'LGPL-3.0+')
webfuse_provider_dep = dependency('webfuse_provider', version: '>=0.3.0',
fallback: ['webfuse', 'webfuse_provider_dep'], default_options: ['without_adapter=true'])
executable('webfuse-provider',
'src/main.c',
dependencies: [webfuse_provider_dep])
executable('static-filesystem-provider',
'src/static_filesystem/static_filesystem.c',
'src/static_filesystem/path.c',
'src/static_filesystem/main.c',
dependencies: [webfuse_provider_dep])

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#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"
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);
}
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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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <signal.h>
#include "webfuse_provider.h"
#include "static_filesystem.h"
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 static_filesystem * fs = static_filesystem_create(config);
static_filesystem_add_text(fs, "brummni/hello_world.txt", 0444, "Hello, World!\n");
static_filesystem_add_text(fs, "brummni/hello_bob.txt", 0444, "Hello, Bob!\n");
static_filesystem_add_text(fs, "brummni/hello_bob.txt", 0444, "Hello, Alice!\n");
static_filesystem_add_text(fs, "bla/hello_world.txt", 0444, "Hello, World!\n");
static_filesystem_add_text(fs, "foo.txt", 0444, "foo\n");
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);
}
wfp_client_dispose(client);
static_filesystem_dispose(fs);
wfp_client_config_dispose(config);
}
if (args.show_help)
{
print_usage();
}
return result;
}

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examples/src/static_filesystem/path.c Normal file
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#include "path.h"
#include <stdlib.h>
#include <string.h>
#define PATH_DEFAULT_CAPACITY (8)
struct path
{
char * * elements;
size_t count;
size_t capacity;
};
static void
path_add(
struct path * path,
char const * element,
size_t element_size)
{
if (0 < element_size)
{
if (path->count >= path->capacity)
{
size_t new_capacity = 2 * path->capacity;
size_t new_size = sizeof(char*) * new_capacity;
char * * elements = realloc(path->elements, new_size);
if (NULL != elements)
{
path->elements = elements;
path->capacity = new_capacity;
}
}
if (path->count < path->capacity)
{
path->elements[path->count] = strndup(element, element_size);
path->count++;
}
}
}
struct path *
path_create(
char const * value)
{
struct path * path = malloc(sizeof(struct path));
if (NULL != path)
{
path->elements = malloc(sizeof(char*) * PATH_DEFAULT_CAPACITY);
path->capacity = PATH_DEFAULT_CAPACITY;
path->count = 0;
char const * remainder = value;
char const * pos = strchr(remainder, '/');
while (NULL != pos)
{
path_add(path, remainder, (pos - remainder));
remainder = pos + 1;
pos = strchr(remainder, '/');
}
path_add(path, remainder, strlen(remainder));
}
return path;
}
void
path_dispose(
struct path * path)
{
for(size_t i = 0; i < path->count; i++)
{
free(path->elements[i]);
}
free(path->elements);
free(path);
(void) path;
}
size_t
path_element_count(
struct path * path)
{
return path->count;
}
char const *
path_get_element(
struct path * path,
size_t i)
{
char const * result = NULL;
if (i < path->count)
{
result = path->elements[i];
}
return result;
}
char const *
path_get_filename(
struct path * path)
{
char const * result = NULL;
if (0 < path->count)
{
result = path->elements[path->count - 1];
}
return result;
}

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#ifndef PATH_H
#define PATH_H
#ifndef __cplusplus
#include <stddef.h>
#else
#include <cstddef>
using ::std::size_t;
#endif
#ifdef __cplusplus
extern "C"
{
#endif
struct path;
extern struct path *
path_create(
char const * value);
extern void
path_dispose(
struct path * path);
extern size_t
path_element_count(
struct path * path);
extern char const *
path_get_element(
struct path * path,
size_t i);
extern char const *
path_get_filename(
struct path * path);
#ifdef __cplusplus
}
#endif
#endif

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examples/src/static_filesystem/static_filesystem.c Normal file
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#include "static_filesystem.h"
#include "webfuse/provider/client_config.h"
#include "webfuse/provider/dirbuffer.h"
#include "webfuse/provider/operation/error.h"
#include "path.h"
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#define STATIC_FILESYSTEM_DEFAULT_CAPACITY (16)
#define STATIC_FILSYSTEM_INODE_ROOT (1)
#define STATIC_FILESYSTEM_MAX_READ_SIZE (4 * 1024)
struct static_filesystem_entry
{
size_t inode;
size_t parent;
char * name;
bool is_file;
int mode;
size_t size;
char * content;
static_filesystem_read_fn * read;
static_filesystem_get_info_fn * get_info;
void * user_data;
};
struct static_filesystem
{
struct static_filesystem_entry * entries;
size_t size;
size_t capacity;
};
static struct static_filesystem_entry *
static_filesystem_get_entry(
struct static_filesystem * filesystem,
size_t inode)
{
struct static_filesystem_entry * entry = NULL;
if ((0 < inode) && (inode <= filesystem->size))
{
entry = &filesystem->entries[inode - 1];
}
return entry;
}
static struct static_filesystem_entry *
static_filesystem_get_entry_by_name(
struct static_filesystem * filesystem,
size_t parent,
char const * name)
{
struct static_filesystem_entry * entry = NULL;
for(size_t i = 0; i < filesystem->size; i++)
{
struct static_filesystem_entry * current = &filesystem->entries[i];
if ((parent == current->parent) && (0 == strcmp(name, current->name)))
{
entry = current;
break;
}
}
return entry;
}
static struct static_filesystem_entry *
static_filesystem_add_entry(
struct static_filesystem * filesystem)
{
struct static_filesystem_entry * entry = NULL;
if (filesystem->size >= filesystem->capacity)
{
struct static_filesystem_entry * entries;
size_t new_capacity = 2 * filesystem->capacity;
size_t new_size = new_capacity * sizeof(struct static_filesystem_entry);
entries = realloc(filesystem->entries, new_size);
if (NULL != entries)
{
filesystem->entries = entries;
filesystem->capacity = new_capacity;
}
}
if (filesystem->size < filesystem->capacity)
{
entry = &filesystem->entries[filesystem->size];
entry->inode = filesystem->size + 1;
filesystem->size++;
}
return entry;
}
static size_t
static_filesystem_entry_read(
size_t offset,
char * buffer,
size_t buffer_size,
void * user_data)
{
size_t result = 0;
struct static_filesystem_entry * entry = user_data;
if (offset < entry->size)
{
size_t remaining = (entry->size - offset);
result = (buffer_size < remaining) ? buffer_size : remaining;
memcpy(buffer, entry->content, result);
}
return result;
}
static void
static_filesystem_entry_get_info(
void * user_data,
int * result_mode,
size_t * result_size)
{
struct static_filesystem_entry * entry = user_data;
*result_mode = entry->mode;
*result_size = entry->size;
}
static size_t
static_filesystem_file_read(
size_t offset,
char * buffer,
size_t buffer_size,
void * user_data)
{
size_t result = 0;
struct static_filesystem_entry * entry = user_data;
char const * filename = entry->content;
FILE * file = fopen(filename, "rb");
if (NULL != file)
{
fseek(file, offset, SEEK_SET);
result = fread(buffer, buffer_size, 1, file);
fclose(file);
}
return result;
}
static void
static_filesystem_file_get_info(
void * user_data,
int * result_mode,
size_t * result_size)
{
struct static_filesystem_entry * entry = user_data;
char const * filename = entry->content;
struct stat buffer;
stat(filename, &buffer);
*result_mode = (int) (buffer.st_mode & 0777);
*result_size = (size_t) buffer.st_size;
}
static size_t
static_filesystem_add_dir(
struct static_filesystem * filesystem,
size_t parent,
char const * name
)
{
struct static_filesystem_entry * entry = static_filesystem_get_entry_by_name(filesystem, parent, name);
if (NULL == entry)
{
entry = static_filesystem_add_entry(filesystem);
entry->parent = parent;
entry->is_file = false;
entry->mode = 0555;
entry->name = strdup(name);
entry->user_data = entry;
entry->read = &static_filesystem_entry_read;
entry->get_info = &static_filesystem_entry_get_info;
entry->size = 0;
entry->content = NULL;
}
return entry->inode;
}
static size_t
static_filesystem_make_parent(
struct static_filesystem * filesystem,
struct path * path)
{
size_t result = STATIC_FILSYSTEM_INODE_ROOT;
size_t count = path_element_count(path);
if (0 < count)
{
for(size_t i = 0; i < (count - 1); i++)
{
char const * name = path_get_element(path, i);
result = static_filesystem_add_dir(filesystem, result, name);
}
}
return result;
}
static void
static_filesystem_stat(
struct static_filesystem_entry * entry,
struct stat * stat
)
{
memset(stat, 0, sizeof(struct stat));
int mode;
size_t size;
entry->get_info(entry->user_data, &mode, &size);
stat->st_ino = entry->inode;
stat->st_size = entry->size;
stat->st_mode = entry->mode & 0777;
stat->st_mode |= (entry->is_file) ? S_IFREG: S_IFDIR;
}
static void static_filesystem_lookup(
struct wfp_request * request,
ino_t parent,
char const * name,
void * user_data)
{
struct static_filesystem * filesystem = user_data;
struct static_filesystem_entry * entry = static_filesystem_get_entry_by_name(filesystem, parent, name);
if (NULL != entry)
{
struct stat stat;
static_filesystem_stat(entry, &stat);
wfp_respond_lookup(request, &stat);
}
else
{
wfp_respond_error(request, WF_BAD_NOENTRY);
}
}
static void static_filesystem_getattr(
struct wfp_request * request,
ino_t inode,
void * user_data)
{
struct static_filesystem * filesystem = user_data;
struct static_filesystem_entry * entry = static_filesystem_get_entry(filesystem, inode);
if (NULL != entry)
{
struct stat stat;
static_filesystem_stat(entry, &stat);
wfp_respond_getattr(request, &stat);
}
else
{
wfp_respond_error(request, WF_BAD_NOENTRY);
}
}
static void static_filesystem_readdir(
struct wfp_request * request,
ino_t directory,
void * user_data)
{
struct static_filesystem * filesystem = user_data;
struct static_filesystem_entry * dir = static_filesystem_get_entry(filesystem, directory);
if ((NULL != dir) && (!dir->is_file))
{
struct wfp_dirbuffer * buffer = wfp_dirbuffer_create();
wfp_dirbuffer_add(buffer, ".", dir->inode);
wfp_dirbuffer_add(buffer, "..", dir->inode);
for(size_t i = 0; i < filesystem->size; i++)
{
struct static_filesystem_entry const * entry = &filesystem->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 static_filesystem_open(
struct wfp_request * request,
ino_t inode,
int flags,
void * user_data)
{
struct static_filesystem * filesystem = user_data;
struct static_filesystem_entry * entry = static_filesystem_get_entry(filesystem, inode);
if ((NULL != entry) && (entry->is_file))
{
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 void static_filesystem_read(
struct wfp_request * request,
ino_t inode,
uint32_t handle,
size_t offset,
size_t length,
void * user_data)
{
(void) handle;
struct static_filesystem * filesystem = user_data;
struct static_filesystem_entry * entry = static_filesystem_get_entry(filesystem, inode);
if ((NULL != entry) && (entry->is_file))
{
char buffer[STATIC_FILESYSTEM_MAX_READ_SIZE];
size_t max_size = (length < STATIC_FILESYSTEM_MAX_READ_SIZE) ? length : STATIC_FILESYSTEM_MAX_READ_SIZE;
size_t count = entry->read(offset, buffer, max_size, entry->user_data);
wfp_respond_read(request, buffer, count);
}
else
{
wfp_respond_error(request, WF_BAD_NOENTRY);
}
}
struct static_filesystem *
static_filesystem_create(
struct wfp_client_config * config)
{
(void) config;
struct static_filesystem * filesystem = malloc(sizeof(struct static_filesystem));
if (NULL != filesystem)
{
filesystem->entries = malloc(sizeof(struct static_filesystem_entry) * STATIC_FILESYSTEM_DEFAULT_CAPACITY);
filesystem->size = 0;
filesystem->capacity = STATIC_FILESYSTEM_DEFAULT_CAPACITY;
static_filesystem_add_dir(filesystem, 0, "<root>");
wfp_client_config_set_userdata(config, filesystem);
wfp_client_config_set_onlookup(config, &static_filesystem_lookup);
wfp_client_config_set_ongetattr(config, &static_filesystem_getattr);
wfp_client_config_set_onreaddir(config, &static_filesystem_readdir);
wfp_client_config_set_onopen(config, &static_filesystem_open);
wfp_client_config_set_onread(config, &static_filesystem_read);
}
return filesystem;
}
void
static_filesystem_dispose(
struct static_filesystem * filesystem)
{
for(size_t i = 0; i < filesystem->size; i++)
{
struct static_filesystem_entry * entry = &filesystem->entries[i];
free(entry->name);
free(entry->content);
}
free(filesystem->entries);
free(filesystem);
}
void
static_filesystem_add(
struct static_filesystem * filesystem,
char const * path,
int mode,
char const * content,
size_t length)
{
struct path * path_ = path_create(path);
if (NULL != path_)
{
size_t parent = static_filesystem_make_parent(filesystem, path_);
struct static_filesystem_entry * entry = static_filesystem_add_entry(filesystem);
entry->parent = parent;
entry->is_file = true;
entry->name = strdup(path_get_filename(path_));
entry->mode = mode;
entry->size = length;
entry->get_info = &static_filesystem_entry_get_info;
entry->read = &static_filesystem_entry_read;
entry->user_data = entry;
entry->content = malloc(length);
memcpy(entry->content, content, length);
path_dispose(path_);
}
}
void
static_filesystem_add_text(
struct static_filesystem * filesystem,
char const * path,
int mode,
char const * content)
{
size_t length = strlen(content);
static_filesystem_add(filesystem, path, mode, content, length);
}
void
static_filesystem_add_file(
struct static_filesystem * filesystem,
char const * path,
char const * filename)
{
struct path * path_ = path_create(path);
if (NULL != path_)
{
size_t parent = static_filesystem_make_parent(filesystem, path_);
struct static_filesystem_entry * entry = static_filesystem_add_entry(filesystem);
entry->parent = parent;
entry->is_file = true;
entry->mode = 0;
entry->content = strdup(filename);
entry->size = 0;
entry->name = strdup(path_get_filename(path_));
entry->get_info = &static_filesystem_file_get_info;
entry->read = &static_filesystem_file_read;
entry->user_data = entry;
path_dispose(path_);
}
}
void
static_filesystem_add_generic(
struct static_filesystem * filesystem,
char const * path,
static_filesystem_read_fn * read,
static_filesystem_get_info_fn * get_info,
void * user_data)
{
struct path * path_ = path_create(path);
if (NULL != path_)
{
size_t parent = static_filesystem_make_parent(filesystem, path_);
struct static_filesystem_entry * entry = static_filesystem_add_entry(filesystem);
entry->parent = parent;
entry->is_file = true;
entry->mode = 0;
entry->content = NULL;
entry->size = 0;
entry->name = strdup(path_get_filename(path_));
entry->get_info = get_info;
entry->read = read;
entry->user_data = user_data;
path_dispose(path_);
}
}

73
examples/src/static_filesystem/static_filesystem.h Normal file
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@@ -0,0 +1,73 @@
#ifndef STATIC_FILESYSTEM_H
#define STATIC_FILESYSTEM_H
#ifndef __cplusplus
#include <stddef.h>
#else
#include <cstddef>
using ::std::size_t;
#endif
#ifdef __cplusplus
extern "C"
{
#endif
struct wfp_client_config;
struct wfp_static_filesystem;
typedef size_t
static_filesystem_read_fn(
size_t offset,
char * buffer,
size_t buffer_size,
void * user_data);
typedef void
static_filesystem_get_info_fn(
void * user_data,
int * result_mode,
size_t * result_size);
extern struct static_filesystem *
static_filesystem_create(
struct wfp_client_config * config);
extern void
static_filesystem_dispose(
struct static_filesystem * filesystem);
extern void
static_filesystem_add(
struct static_filesystem * filesystem,
char const * path,
int mode,
char const * content,
size_t length);
extern void
static_filesystem_add_text(
struct static_filesystem * filesystem,
char const * path,
int mode,
char const * content);
extern void
static_filesystem_add_file(
struct static_filesystem * filesystem,
char const * path,
char const * filename);
extern void
static_filesystem_add_generic(
struct static_filesystem * filesystem,
char const * path,
static_filesystem_read_fn * read,
static_filesystem_get_info_fn * get_info,
void * user_data);
#ifdef __cplusplus
}
#endif
#endif

10
examples/subprojects/jansson.wrap Normal file
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@@ -0,0 +1,10 @@
[wrap-file]
directory = jansson-2.11
source_url = http://www.digip.org/jansson/releases/jansson-2.11.tar.bz2
source_filename = jansson-2.11.tar.bz2
source_hash = 783132e2fc970feefc2fa54199ef65ee020bd8e0e991a78ea44b8586353a0947
patch_url = https://wrapdb.mesonbuild.com/v1/projects/jansson/2.11/3/get_zip
patch_filename = jansson-2.11-3-wrap.zip
patch_hash = 0bcac510994890048d42658c674e33dd7d88715fc1e3bf49d10012f57b0e0020

6
examples/subprojects/libwebsockets.wrap Normal file
View File

@@ -0,0 +1,6 @@
[wrap-file]
directory = libwebsockets-4.0.13
source_url = https://github.com/warmcat/libwebsockets/archive/v4.0.13.zip
source_filename = v4.0.13.zip
source_hash = 0914ea3fdec496daf6b6a5c00f7ba1b52eb8cc3d55b66685df92920b232fd7a5

6
examples/subprojects/webfuse.wrap Normal file
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@@ -0,0 +1,6 @@
[wrap-file]
directory = webfuse-0.3.1
source_url = https://github.com/falk-werner/webfuse/archive/v0.3.1.tar.gz
source_filename = v0.3.1.tar.gz
source_hash = 46624b5f29e8f87dd1aebfce3b13ca87e766bc59546b6e5f49665d2f8c555d62