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lwsws Libwebsockets Web Server

Browse source 
This makes a start on the LibWebSockets WebServer.

The app cmake build support and JSON config parsing are implemented and
the app can start, create the vhosts, listen and serve file:// mounts on
them.

Signed-off-by: Andy Green <andy@warmcat.com>
This commit is contained in:
Andy Green 2016-03-28 10:12:37 +08:00
parent d526c50c22
commit cd0c696a0d
10 changed files with 2416 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

61
CMakeLists.txt
View file

@ -89,7 +89,7 @@ option(LWS_MBED3 "Platform is MBED3" OFF)
option(LWS_SSL_SERVER_WITH_ECDH_CERT "Include SSL server use ECDH certificate" OFF)
option(LWS_WITH_CGI "Include CGI (spawn process with network-connected stdin/out/err) APIs" OFF)
option(LWS_WITH_HTTP_PROXY "Support for rewriting HTTP proxying" OFF)
option(LWS_WITH_LWSWS "Libwebsockets Webserver" ON)
if (DEFINED YOTTA_WEBSOCKETS_VERSION_STRING)
@ -110,6 +110,11 @@ if (WIN32)
set(LWS_MAX_SMP 1)
endif()
if (LWS_WITHOUT_SERVER)
set(LWS_WITH_LWSWS OFF)
endif()
if (LWS_WITH_HTTP_PROXY AND (LWS_WITHOUT_CLIENT OR LWS_WITHOUT_SERVER))
message(FATAL_ERROR "You have to enable both client and server for http proxy")
endif()
@ -1065,6 +1070,54 @@ if (NOT LWS_WITHOUT_TESTAPPS)
endif()
endif(NOT LWS_WITHOUT_TESTAPPS)
if (LWS_WITH_LWSWS)
list(APPEND LWSWS_SRCS
"lwsws/main.c"
"lwsws/lejp.c"
"lwsws/conf.c"
"lwsws/http.c"
)
if (WIN32)
list(APPEND LWSWS_SRCS
${WIN32_HELPERS_PATH}/getopt.c
${WIN32_HELPERS_PATH}/getopt_long.c
${WIN32_HELPERS_PATH}/gettimeofday.c
)
list(APPEND LWSWS_HDR
${WIN32_HELPERS_PATH}/getopt.h
${WIN32_HELPERS_PATH}/gettimeofday.h
)
endif(WIN32)
source_group("Headers Private" FILES ${LWSWS_HDR})
source_group("Sources" FILES ${LWSWS_SRCS})
add_executable("lwsws" ${LWSWS_SRCS} ${LWSWS_HDR})
if (LWS_LINK_TESTAPPS_DYNAMIC)
if (NOT LWS_WITH_SHARED)
message(FATAL_ERROR "Build of the shared library is disabled. LWS_LINK_TESTAPPS_DYNAMIC must be combined with LWS_WITH_SHARED.")
endif()
target_link_libraries("lwsws" websockets_shared)
add_dependencies("lwsws" websockets_shared)
else()
if (NOT LWS_WITH_STATIC)
message(FATAL_ERROR "Build of the static library is disabled. Disabled LWS_LINK_TESTAPPS_DYNAMIC must be combined with LWS_WITH_STATIC.")
endif()
target_link_libraries("lwsws" websockets)
add_dependencies("lwsws" websockets)
endif()
# Set test app specific defines.
set_property(TARGET "lwsws"
PROPERTY COMPILE_DEFINITIONS
INSTALL_DATADIR="${CMAKE_INSTALL_PREFIX}/share"
)
endif (LWS_WITH_LWSWS)
if (UNIX)
# Generate documentation.
# TODO: Fix this on Windows.
@ -1177,6 +1230,12 @@ if (NOT LWS_WITHOUT_TESTAPPS AND NOT LWS_WITHOUT_CLIENT)
set(CPACK_COMPONENT_EXAMPLES_DISPLAY_NAME "Example files")
endif()
# lwsws
if (LWS_WITH_LWSWS)
install(TARGETS lwsws
RUNTIME DESTINATION "${LWS_INSTALL_BIN_DIR}" COMPONENT lwsws )
endif()
# Programs shared files used by the test-server.
if (NOT LWS_WITHOUT_TESTAPPS AND NOT LWS_WITHOUT_SERVER)
install(FILES ${TEST_SERVER_DATA}

10
LICENSE
View file

@ -40,6 +40,16 @@ Public Domain (CC-zero) to simplify reuse
- test-server/*.c
- test-server/*.h
4) lwsws (Libwebsocket web server) is a bundled application that is not
part of the libwebsockets library, it's a separate application that uses
the library. The related sources are in a separate directory. If you don't
distribute lwsws, you do not need to observe its license.
- lwsws/lejp.c - LGPL2.1
- lwsws/lejp.h - LGPL2.1
- lwsws/[all else] - GPL2.1
GNU LESSER GENERAL PUBLIC LICENSE

110
README.lwsws.md Normal file
View file

@ -0,0 +1,110 @@
Libwebsockets Web Server
------------------------
lwsws is an implementation of a very lightweight, ws-capable generic web
server, which uses libwebsockets to implement everything underneath.
Configuration
-------------
lwsws uses JSON config files, there is a single file intended for global
settings
/etc/lwsws/conf
```
# these are the server global settings
# stuff related to vhosts should go in one
# file per vhost in ../conf.d/
{
"global": {
"uid": "99",
"gid": "99",
"interface": "eth0",
"count-threads": "1",
"init-ssl": "yes"
}
}
```
and a config directory intended to take one file per vhost
/etc/lwsws/conf.d/warmcat.com
```
{
"vhosts": [{
"name": "warmcat.com",
"port": "443",
"host-ssl-key": "/etc/pki/tls/private/warmcat.com.key",
"host-ssl-cert": "/etc/pki/tls/certs/warmcat.com.crt",
"host-ssl-ca": "/etc/pki/tls/certs/warmcat.com.cer",
"mounts": [{
"mountpoint": "/",
"origin": "file:///var/www/warmcat.com",
"default": "index.html"
}]
}]
}
```
Vhosts
------
One server can run many vhosts, where SSL is in use SNI is used to match
the connection to a vhost and its vhost-specific SSL keys during SSL
negotiation.
Listing multiple vhosts looks something like this
```
{
"vhosts": [{
"name": "warmcat.com",
"port": "443",
"host-ssl-key": "/etc/pki/tls/private/warmcat.com.key",
"host-ssl-cert": "/etc/pki/tls/certs/warmcat.com.crt",
"host-ssl-ca": "/etc/pki/tls/certs/warmcat.com.cer",
"mounts": [{
"mountpoint": "/",
"origin": "file:///var/www/warmcat.com",
"default": "index.html"
}]
}, {
"name": "warmcat2.com",
"port": "443",
"host-ssl-key": "/etc/pki/tls/private/warmcat.com.key",
"host-ssl-cert": "/etc/pki/tls/certs/warmcat.com.crt",
"host-ssl-ca": "/etc/pki/tls/certs/warmcat.com.cer",
"mounts": [{
"mountpoint": "/",
"origin": "file:///var/www/warmcat2.com",
"default": "index.html"
}]
}
]
}
```
Vhost name and port
-------------------
The vhost name field is used to match on incoming SNI or Host: header, so it
must always be the host name used to reach the vhost externally.
Vhosts may have the same name and different ports, these will each create a
listening socket on the appropriate port, and they may have the same port and
different name: these will be treated as true vhosts on one listening socket
and the active vhost decided at SSL negotiation time (via SNI) or if no SSL,
then after the Host: header from the client has been parsed.
Mounts
------
Where mounts are given in the vhost definition, then directory contents may
be auto-served if it matches the mountpoint.
Currently only file:// mount protocol and a fixed set of mimetypes are
supported.

43
changelog
View file

@ -185,6 +185,49 @@ LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS. If you give this, non-ssl
connections to the server listen port are accepted and receive a 301
redirect to / on the same host and port using https://
New application lwsws
---------------------
A libwebsockets-based general webserver is built by default now, lwsws.
It's configured by JSON, by default in
/etc/lwsws/conf
which contains global lws context settings like this
{
"global": {
"uid": "99",
"gid": "99",
"interface": "eth0",
"count-threads": "1"
}
}
/etc/lwsws/conf.d/*
which contains zero or more files describing vhosts, like this
{
"vhosts": [
{ "name": "warmcat.com",
"port": "443",
"host-ssl-key": "/etc/pki/tls/private/warmcat.com.key",
"host-ssl-cert": "/etc/pki/tls/certs/warmcat.com.crt",
"host-ssl-ca": "/etc/pki/tls/certs/warmcat.com.cer",
"mounts": [
{ "/": [
{ "home": "file:///var/www/warmcat.com" },
{ "default": "index.html" }
]
}
]
}
]
}
v1.7.0
======

382
lwsws/conf.c Normal file
View file

@ -0,0 +1,382 @@
/*
* libwebsockets web server application
*
* Copyright (C) 2010-2016 Andy Green <andy@warmcat.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include "lwsws.h"
static const char * const paths_global[] = {
"global.uid",
"global.gid",
"global.interface",
"global.count-threads",
"global.init-ssl",
};
enum lejp_global_paths {
LEJPGP_UID,
LEJPGP_GID,
LEJPGP_INTERFACE,
LEJPGP_COUNT_THREADS,
LWJPGP_INIT_SSL,
};
static const char * const paths_vhosts[] = {
"vhosts[]",
"vhosts[].mounts[]",
"vhosts[].name",
"vhosts[].port",
"vhosts[].host-ssl-key",
"vhosts[].host-ssl-cert",
"vhosts[].host-ssl-ca",
"vhosts[].mounts[].mountpoint",
"vhosts[].mounts[].origin",
"vhosts[].mounts[].default"
};
enum lejp_vhost_paths {
LEJPVP,
LEJPVP_MOUNTS,
LEJPVP_NAME,
LEJPVP_PORT,
LEJPVP_HOST_SSL_KEY,
LEJPVP_HOST_SSL_CERT,
LEJPVP_HOST_SSL_CA,
LEJPVP_MOUNTPOINT,
LEJPVP_ORIGIN,
LEJPVP_DEFAULT,
};
struct jpargs {
struct lws_context_creation_info *info;
struct lws_context *context;
const struct lws_protocols *protocols;
const struct lws_extension *extensions;
char *p, *end, valid;
struct lws_http_mount *head, *last;
char *mountpoint, *origin, *def;
};
static int arg_to_bool(const char *s)
{
static const char * const on[] = { "on", "yes", "true" };
int n = atoi(s);
if (n)
return 1;
for (n = 0; n < ARRAY_SIZE(on); n++)
if (!strcasecmp(s, on[n]))
return 1;
return 0;
}
static char
lejp_globals_cb(struct lejp_ctx *ctx, char reason)
{
struct jpargs *a = (struct jpargs *)ctx->user;
/* we only match on the prepared path strings */
if (!(reason & LEJP_FLAG_CB_IS_VALUE) || !ctx->path_match)
return 0;
switch (ctx->path_match - 1) {
case LEJPGP_UID:
a->info->uid = atoi(ctx->buf);
return 0;
case LEJPGP_GID:
a->info->gid = atoi(ctx->buf);
return 0;
case LEJPGP_INTERFACE:
a->info->iface = a->p;
break;
case LEJPGP_COUNT_THREADS:
a->info->count_threads = atoi(ctx->buf);
return 0;
case LWJPGP_INIT_SSL:
if (arg_to_bool(ctx->buf))
a->info->options |= LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
return 0;
default:
return 0;
}
a->p += snprintf(a->p, a->end - a->p, "%s", ctx->buf);
return 0;
}
static char
lejp_vhosts_cb(struct lejp_ctx *ctx, char reason)
{
struct jpargs *a = (struct jpargs *)ctx->user;
struct lws_http_mount *m;
int n;
if (reason == LEJPCB_OBJECT_START && ctx->path_match == LEJPVP + 1) {
a->valid = 1;
a->head = NULL;
a->last = NULL;
a->info->port = 0;
a->info->iface = NULL;
a->info->protocols = a->protocols;
a->info->extensions = a->extensions;
a->info->ssl_cert_filepath = NULL;
a->info->ssl_private_key_filepath = NULL;
a->info->ssl_ca_filepath = NULL;
a->info->timeout_secs = 5;
a->info->ssl_cipher_list = "ECDHE-ECDSA-AES256-GCM-SHA384:"
"ECDHE-RSA-AES256-GCM-SHA384:"
"DHE-RSA-AES256-GCM-SHA384:"
"ECDHE-RSA-AES256-SHA384:"
"HIGH:!aNULL:!eNULL:!EXPORT:"
"!DES:!MD5:!PSK:!RC4:!HMAC_SHA1:"
"!SHA1:!DHE-RSA-AES128-GCM-SHA256:"
"!DHE-RSA-AES128-SHA256:"
"!AES128-GCM-SHA256:"
"!AES128-SHA256:"
"!DHE-RSA-AES256-SHA256:"
"!AES256-GCM-SHA384:"
"!AES256-SHA256";
}
if (reason == LEJPCB_OBJECT_START &&
ctx->path_match == LEJPVP_MOUNTS + 1) {
a->mountpoint = NULL;
a->origin = NULL;
a->def = NULL;
}
if (reason == LEJPCB_OBJECT_END &&
(ctx->path_match == LEJPVP + 1 || !ctx->path[0]) &&
a->valid) {
//lwsl_notice("%s\n", ctx->path);
if (!a->info->port) {
lwsl_err("Port required (eg, 443)");
return 1;
}
a->valid = 0;
if (!lws_create_vhost(a->context, a->info, a->head)) {
lwsl_err("Failed to create vhost %s\n",
a->info->vhost_name);
return 1;
}
return 0;
}
if (reason == LEJPCB_OBJECT_END &&
ctx->path_match == LEJPVP_MOUNTS + 1) {
if (!a->mountpoint || !a->origin) {
lwsl_err("mountpoint and origin required\n");
return 1;
}
n = lws_write_http_mount(a->last, &m, a->p, a->mountpoint,
a->origin, a->def);
if (!n)
return 1;
a->p += n;
if (!a->head)
a->head = m;
a->last = m;
}
/* we only match on the prepared path strings */
if (!(reason & LEJP_FLAG_CB_IS_VALUE) || !ctx->path_match)
return 0;
switch (ctx->path_match - 1) {
case LEJPVP_NAME:
a->info->vhost_name = a->p;
break;
case LEJPVP_PORT:
a->info->port = atoi(ctx->buf);
return 0;
case LEJPVP_HOST_SSL_KEY:
a->info->ssl_private_key_filepath = a->p;
break;
case LEJPVP_HOST_SSL_CERT:
a->info->ssl_cert_filepath = a->p;
break;
case LEJPVP_HOST_SSL_CA:
a->info->ssl_ca_filepath = a->p;
break;
case LEJPVP_MOUNTPOINT:
a->mountpoint = a->p;
break;
case LEJPVP_ORIGIN:
a->origin = a->p;
break;
case LEJPVP_DEFAULT:
a->def = a->p;
break;
default:
return 0;
}
a->p += snprintf(a->p, a->end - a->p, "%s", ctx->buf);
*(a->p)++ = '\0';
return 0;
}
/*
* returns 0 = OK, 1 = can't open, 2 = parsing error
*/
static int
lwsws_get_config(void *user, const char *f, const char * const *paths,
int count_paths, lejp_callback cb)
{
unsigned char buf[128];
struct lejp_ctx ctx;
int n, m, fd;
fd = open(f, O_RDONLY);
if (fd < 0) {
lwsl_err("Cannot open %s\n", f);
return 1;
}
lwsl_info("%s: %s\n", __func__, f);
lejp_construct(&ctx, cb, user, paths, count_paths);
do {
n = read(fd, buf, sizeof(buf));
if (!n)
break;
m = (int)(char)lejp_parse(&ctx, buf, n);
} while (m == LEJP_CONTINUE);
close(fd);
n = ctx.line;
lejp_destruct(&ctx);
if (m < 0) {
lwsl_err("%s(%u): parsing error %d\n", f, n, m);
return 2;
}
return 0;
}
#ifndef _WIN32
static int filter(const struct dirent *ent)
{
if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, ".."))
return 0;
return 1;
}
#endif
static int
lwsws_get_config_d(void *user, const char *d, const char * const *paths,
int count_paths, lejp_callback cb)
{
#ifndef _WIN32
struct dirent **namelist;
char path[256];
int n, i, ret = 0;
n = scandir(d, &namelist, filter, alphasort);
if (n < 0) {
lwsl_err("Scandir on %d failed\n", d);
}
for (i = 0; i < n; i++) {
snprintf(path, sizeof(path) - 1, "%s/%s", d,
namelist[i]->d_name);
ret = lwsws_get_config(user, path, paths, count_paths, cb);
if (ret) {
while (i++ < n)
free(namelist[i]);
goto bail;
}
free(namelist[i]);
}
bail:
free(namelist);
return ret;
#else
return 0;
#endif
}
int
lwsws_get_config_globals(struct lws_context_creation_info *info, const char *d,
char **cs, int *len)
{
struct jpargs a;
a.info = info;
a.p = *cs;
a.end = a.p + *len;
a.valid = 0;
if (lwsws_get_config(&a, "/etc/lwsws/conf", paths_global,
ARRAY_SIZE(paths_global), lejp_globals_cb) > 1)
return 1;
if (lwsws_get_config_d(&a, d, paths_global,
ARRAY_SIZE(paths_global), lejp_globals_cb) > 1)
return 1;
*cs = a.p;
*len = a.end - a.p;
return 0;
}
int
lwsws_get_config_vhosts(struct lws_context *context,
struct lws_context_creation_info *info, const char *d,
char **cs, int *len)
{
struct jpargs a;
a.info = info;
a.p = *cs;
a.end = a.p + *len;
a.valid = 0;
a.context = context;
a.protocols = info->protocols;
a.extensions = info->extensions;
if (lwsws_get_config(&a, "/etc/lwsws/conf", paths_vhosts,
ARRAY_SIZE(paths_vhosts), lejp_vhosts_cb) > 1)
return 1;
if (lwsws_get_config_d(&a, d, paths_vhosts,
ARRAY_SIZE(paths_vhosts), lejp_vhosts_cb) > 1)
return 1;
*cs = a.p;
*len = a.end - a.p;
lws_finalize_startup(context);
return 0;
}

663
lwsws/http.c Normal file
View file

@ -0,0 +1,663 @@
/*
* libwebsockets web server application
*
* Copyright (C) 2010-2016 Andy Green <andy@warmcat.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include "lwsws.h"
/* http server gets files from this path */
#define LOCAL_RESOURCE_PATH INSTALL_DATADIR"/libwebsockets-test-server"
char *resource_path = LOCAL_RESOURCE_PATH;
/*
* We take a strict whitelist approach to stop ../ attacks
*/
struct serveable {
const char *urlpath;
const char *mimetype;
};
const char * get_mimetype(const char *file)
{
int n = strlen(file);
if (n < 5)
return NULL;
if (!strcmp(&file[n - 4], ".ico"))
return "image/x-icon";
if (!strcmp(&file[n - 4], ".png"))
return "image/png";
if (!strcmp(&file[n - 5], ".html"))
return "text/html";
if (!strcmp(&file[n - 4], ".css"))
return "text/css";
return NULL;
}
/* this protocol server (always the first one) handles HTTP,
*
* Some misc callbacks that aren't associated with a protocol also turn up only
* here on the first protocol server.
*/
int callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user,
void *in, size_t len)
{
struct per_session_data__http *pss =
(struct per_session_data__http *)user;
unsigned char buffer[4096 + LWS_PRE];
unsigned long amount, file_len, sent;
char leaf_path[1024];
const char *mimetype;
char *other_headers;
unsigned char *end;
struct timeval tv;
unsigned char *p;
#ifndef LWS_NO_CLIENT
struct per_session_data__http *pss1;
struct lws *wsi1;
#endif
char buf[256];
char b64[64];
int n, m;
#ifdef EXTERNAL_POLL
struct lws_pollargs *pa = (struct lws_pollargs *)in;
#endif
// lwsl_err("%s: reason %d\n", __func__, reason);
switch (reason) {
case LWS_CALLBACK_HTTP:
{
char name[100], rip[50];
lws_get_peer_addresses(wsi, lws_get_socket_fd(wsi), name,
sizeof(name), rip, sizeof(rip));
sprintf(buf, "%s (%s)", name, rip);
lwsl_notice("HTTP connect from %s\n", buf);
}
if (len < 1) {
lws_return_http_status(wsi,
HTTP_STATUS_BAD_REQUEST, NULL);
goto try_to_reuse;
}
#ifndef LWS_NO_CLIENT
if (!strncmp(in, "/proxytest", 10)) {
struct lws_client_connect_info i;
char *rootpath = "/";
const char *p = (const char *)in;
if (lws_get_child(wsi))
break;
pss->client_finished = 0;
memset(&i,0, sizeof(i));
i.context = lws_get_context(wsi);
i.address = "git.libwebsockets.org";
i.port = 80;
i.ssl_connection = 0;
if (p[10])
i.path = (char *)in + 10;
else
i.path = rootpath;
i.host = "git.libwebsockets.org";
i.origin = NULL;
i.method = "GET";
i.parent_wsi = wsi;
i.uri_replace_from = "git.libwebsockets.org/";
i.uri_replace_to = "/proxytest/";
if (!lws_client_connect_via_info(&i)) {
lwsl_err("proxy connect fail\n");
break;
}
break;
}
#endif
#if 1
/* this example server has no concept of directories */
if (strchr((const char *)in + 1, '/')) {
lws_return_http_status(wsi, HTTP_STATUS_FORBIDDEN, NULL);
goto try_to_reuse;
}
#endif
#ifdef LWS_WITH_CGI
if (!strncmp(in, "/cgitest", 8)) {
static char *cmd[] = {
"/bin/sh",
"-c",
INSTALL_DATADIR"/libwebsockets-test-server/lws-cgi-test.sh",
// "/var/www/cgi-bin/cgit",
NULL
};
lwsl_notice("%s: cgitest\n", __func__);
n = lws_cgi(wsi, cmd, 8, 5);
if (n) {
lwsl_err("%s: cgi failed\n");
return -1;
}
p = buffer + LWS_PRE;
end = p + sizeof(buffer) - LWS_PRE;
if (lws_add_http_header_status(wsi, 200, &p, end))
return 1;
if (lws_add_http_header_by_token(wsi, WSI_TOKEN_CONNECTION,
(unsigned char *)"close", 5, &p, end))
return 1;
n = lws_write(wsi, buffer + LWS_PRE,
p - (buffer + LWS_PRE),
LWS_WRITE_HTTP_HEADERS);
/* the cgi starts by outputting headers, we can't
* finalize the headers until we see the end of that
*/
break;
}
#endif
/* if a legal POST URL, let it continue and accept data */
if (lws_hdr_total_length(wsi, WSI_TOKEN_POST_URI))
return 0;
/* check for the "send a big file by hand" example case */
if (!strcmp((const char *)in, "/leaf.jpg")) {
if (strlen(resource_path) > sizeof(leaf_path) - 10)
return -1;
sprintf(leaf_path, "%s/leaf.jpg", resource_path);
/* well, let's demonstrate how to send the hard way */
p = buffer + LWS_PRE;
end = p + sizeof(buffer) - LWS_PRE;
pss->fd = lws_plat_file_open(wsi, leaf_path, &file_len,
LWS_O_RDONLY);
if (pss->fd == LWS_INVALID_FILE) {
lwsl_err("faild to open file %s\n", leaf_path);
return -1;
}
/*
* we will send a big jpeg file, but it could be
* anything. Set the Content-Type: appropriately
* so the browser knows what to do with it.
*
* Notice we use the APIs to build the header, which
* will do the right thing for HTTP 1/1.1 and HTTP2
* depending on what connection it happens to be working
* on
*/
if (lws_add_http_header_status(wsi, 200, &p, end))
return 1;
if (lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_SERVER,
(unsigned char *)"libwebsockets",
13, &p, end))
return 1;
if (lws_add_http_header_by_token(wsi,
WSI_TOKEN_HTTP_CONTENT_TYPE,
(unsigned char *)"image/jpeg",
10, &p, end))
return 1;
if (lws_add_http_header_content_length(wsi,
file_len, &p,
end))
return 1;
if (lws_finalize_http_header(wsi, &p, end))
return 1;
/*
* send the http headers...
* this won't block since it's the first payload sent
* on the connection since it was established
* (too small for partial)
*
* Notice they are sent using LWS_WRITE_HTTP_HEADERS
* which also means you can't send body too in one step,
* this is mandated by changes in HTTP2
*/
*p = '\0';
lwsl_info("%s\n", buffer + LWS_PRE);
n = lws_write(wsi, buffer + LWS_PRE,
p - (buffer + LWS_PRE),
LWS_WRITE_HTTP_HEADERS);
if (n < 0) {
lws_plat_file_close(wsi, pss->fd);
return -1;
}
/*
* book us a LWS_CALLBACK_HTTP_WRITEABLE callback
*/
lws_callback_on_writable(wsi);
break;
}
/* if not, send a file the easy way */
if (!strncmp(in, "/cgit-data/", 11)) {
in = (char *)in + 11;
strcpy(buf, "/usr/share/cgit");
} else
strcpy(buf, resource_path);
if (strcmp(in, "/")) {
if (*((const char *)in) != '/')
strcat(buf, "/");
strncat(buf, in, sizeof(buf) - strlen(buf) - 1);
} else /* default file to serve */
strcat(buf, "/test.html");
buf[sizeof(buf) - 1] = '\0';
/* refuse to serve files we don't understand */
mimetype = get_mimetype(buf);
if (!mimetype) {
lwsl_err("Unknown mimetype for %s\n", buf);
lws_return_http_status(wsi,
HTTP_STATUS_UNSUPPORTED_MEDIA_TYPE, NULL);
return -1;
}
/* demonstrates how to set a cookie on / */
other_headers = leaf_path;
p = (unsigned char *)leaf_path;
if (!strcmp((const char *)in, "/") &&
!lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_COOKIE)) {
/* this isn't very unguessable but it'll do for us */
gettimeofday(&tv, NULL);
n = sprintf(b64, "test=LWS_%u_%u_COOKIE;Max-Age=360000",
(unsigned int)tv.tv_sec,
(unsigned int)tv.tv_usec);
if (lws_add_http_header_by_name(wsi,
(unsigned char *)"set-cookie:",
(unsigned char *)b64, n, &p,
(unsigned char *)leaf_path + sizeof(leaf_path)))
return 1;
}
if (lws_is_ssl(wsi) && lws_add_http_header_by_name(wsi,
(unsigned char *)
"Strict-Transport-Security:",
(unsigned char *)
"max-age=15768000 ; "
"includeSubDomains", 36, &p,
(unsigned char *)leaf_path +
sizeof(leaf_path)))
return 1;
n = (char *)p - leaf_path;
n = lws_serve_http_file(wsi, buf, mimetype, other_headers, n);
if (n < 0 || ((n > 0) && lws_http_transaction_completed(wsi)))
return -1; /* error or can't reuse connection: close the socket */
/*
* notice that the sending of the file completes asynchronously,
* we'll get a LWS_CALLBACK_HTTP_FILE_COMPLETION callback when
* it's done
*/
break;
case LWS_CALLBACK_HTTP_BODY:
strncpy(buf, in, 20);
buf[20] = '\0';
if (len < 20)
buf[len] = '\0';
lwsl_notice("LWS_CALLBACK_HTTP_BODY: %s... len %d\n",
(const char *)buf, (int)len);
break;
case LWS_CALLBACK_HTTP_BODY_COMPLETION:
lwsl_notice("LWS_CALLBACK_HTTP_BODY_COMPLETION\n");
/* the whole of the sent body arrived, close or reuse the connection */
lws_return_http_status(wsi, HTTP_STATUS_OK, NULL);
goto try_to_reuse;
case LWS_CALLBACK_HTTP_FILE_COMPLETION:
goto try_to_reuse;
case LWS_CALLBACK_HTTP_WRITEABLE:
lwsl_info("LWS_CALLBACK_HTTP_WRITEABLE\n");
if (pss->client_finished)
return -1;
if (pss->fd == LWS_INVALID_FILE)
goto try_to_reuse;
#ifdef LWS_WITH_CGI
if (pss->reason_bf & 1) {
if (lws_cgi_write_split_stdout_headers(wsi) < 0)
goto bail;
pss->reason_bf &= ~1;
break;
}
#endif
#ifndef LWS_NO_CLIENT
if (pss->reason_bf & 2) {
char *px = buf + LWS_PRE;
int lenx = sizeof(buf) - LWS_PRE;
/*
* our sink is writeable and our source has something
* to read. So read a lump of source material of
* suitable size to send or what's available, whichever
* is the smaller.
*/
pss->reason_bf &= ~2;
wsi1 = lws_get_child(wsi);
if (!wsi1)
break;
if (lws_http_client_read(wsi1, &px, &lenx) < 0)
goto bail;
if (pss->client_finished)
return -1;
break;
}
#endif
/*
* we can send more of whatever it is we were sending
*/
sent = 0;
do {
/* we'd like the send this much */
n = sizeof(buffer) - LWS_PRE;
/* but if the peer told us he wants less, we can adapt */
m = lws_get_peer_write_allowance(wsi);
/* -1 means not using a protocol that has this info */
if (m == 0)
/* right now, peer can't handle anything */
goto later;
if (m != -1 && m < n)
/* he couldn't handle that much */
n = m;
n = lws_plat_file_read(wsi, pss->fd,
&amount, buffer + LWS_PRE, n);
/* problem reading, close conn */
if (n < 0) {
lwsl_err("problem reading file\n");
goto bail;
}
n = (int)amount;
/* sent it all, close conn */
if (n == 0)
goto penultimate;
/*
* To support HTTP2, must take care about preamble space
*
* identification of when we send the last payload frame
* is handled by the library itself if you sent a
* content-length header
*/
m = lws_write(wsi, buffer + LWS_PRE, n, LWS_WRITE_HTTP);
if (m < 0) {
lwsl_err("write failed\n");
/* write failed, close conn */
goto bail;
}
if (m) /* while still active, extend timeout */
lws_set_timeout(wsi, PENDING_TIMEOUT_HTTP_CONTENT, 5);
sent += m;
} while (!lws_send_pipe_choked(wsi) && (sent < 1024 * 1024));
later:
lws_callback_on_writable(wsi);
break;
penultimate:
lws_plat_file_close(wsi, pss->fd);
pss->fd = LWS_INVALID_FILE;
goto try_to_reuse;
bail:
lws_plat_file_close(wsi, pss->fd);
return -1;
/*
* callback for confirming to continue with client IP appear in
* protocol 0 callback since no websocket protocol has been agreed
* yet. You can just ignore this if you won't filter on client IP
* since the default unhandled callback return is 0 meaning let the
* connection continue.
*/
case LWS_CALLBACK_FILTER_NETWORK_CONNECTION:
/* if we returned non-zero from here, we kill the connection */
break;
#ifndef LWS_NO_CLIENT
case LWS_CALLBACK_ESTABLISHED_CLIENT_HTTP: {
char ctype[64], ctlen = 0;
lwsl_err("LWS_CALLBACK_ESTABLISHED_CLIENT_HTTP\n");
p = buffer + LWS_PRE;
end = p + sizeof(buffer) - LWS_PRE;
if (lws_add_http_header_status(lws_get_parent(wsi), 200, &p, end))
return 1;
if (lws_add_http_header_by_token(lws_get_parent(wsi),
WSI_TOKEN_HTTP_SERVER,
(unsigned char *)"libwebsockets",
13, &p, end))
return 1;
ctlen = lws_hdr_copy(wsi, ctype, sizeof(ctype), WSI_TOKEN_HTTP_CONTENT_TYPE);
if (ctlen > 0) {
if (lws_add_http_header_by_token(lws_get_parent(wsi),
WSI_TOKEN_HTTP_CONTENT_TYPE,
(unsigned char *)ctype, ctlen, &p, end))
return 1;
}
#if 0
if (lws_add_http_header_content_length(lws_get_parent(wsi),
file_len, &p, end))
return 1;
#endif
if (lws_finalize_http_header(lws_get_parent(wsi), &p, end))
return 1;
*p = '\0';
lwsl_info("%s\n", buffer + LWS_PRE);
n = lws_write(lws_get_parent(wsi), buffer + LWS_PRE,
p - (buffer + LWS_PRE),
LWS_WRITE_HTTP_HEADERS);
if (n < 0)
return -1;
break; }
case LWS_CALLBACK_CLOSED_CLIENT_HTTP:
//lwsl_err("LWS_CALLBACK_CLOSED_CLIENT_HTTP\n");
return -1;
break;
case LWS_CALLBACK_RECEIVE_CLIENT_HTTP:
//lwsl_err("LWS_CALLBACK_RECEIVE_CLIENT_HTTP: wsi %p\n", wsi);
assert(lws_get_parent(wsi));
if (!lws_get_parent(wsi))
break;
// lwsl_err("LWS_CALLBACK_RECEIVE_CLIENT_HTTP: wsi %p: sock: %d, parent_wsi: %p, parent_sock:%d, len %d\n",
// wsi, lws_get_socket_fd(wsi),
// lws_get_parent(wsi),
// lws_get_socket_fd(lws_get_parent(wsi)), len);
pss1 = lws_wsi_user(lws_get_parent(wsi));
pss1->reason_bf |= 2;
lws_callback_on_writable(lws_get_parent(wsi));
break;
case LWS_CALLBACK_RECEIVE_CLIENT_HTTP_READ:
//lwsl_err("LWS_CALLBACK_RECEIVE_CLIENT_HTTP_READ len %d\n", len);
assert(lws_get_parent(wsi));
m = lws_write(lws_get_parent(wsi), (unsigned char *)in,
len, LWS_WRITE_HTTP);
if (m < 0)
return -1;
break;
case LWS_CALLBACK_COMPLETED_CLIENT_HTTP:
//lwsl_err("LWS_CALLBACK_COMPLETED_CLIENT_HTTP\n");
assert(lws_get_parent(wsi));
if (!lws_get_parent(wsi))
break;
pss1 = lws_wsi_user(lws_get_parent(wsi));
pss1->client_finished = 1;
break;
#endif
#ifdef LWS_WITH_CGI
/* CGI IO events (POLLIN/OUT) appear here our demo user code policy is
*
* - POST data goes on subprocess stdin
* - subprocess stdout goes on http via writeable callback
* - subprocess stderr goes to the logs
*/
case LWS_CALLBACK_CGI:
pss->args = *((struct lws_cgi_args *)in);
//lwsl_notice("LWS_CALLBACK_CGI: ch %d\n", pss->args.ch);
switch (pss->args.ch) { /* which of stdin/out/err ? */
case LWS_STDIN:
/* TBD stdin rx flow control */
break;
case LWS_STDOUT:
pss->reason_bf |= 1;
/* when writing to MASTER would not block */
lws_callback_on_writable(wsi);
break;
case LWS_STDERR:
n = read(lws_get_socket_fd(pss->args.stdwsi[LWS_STDERR]),
buf, 127);
//lwsl_notice("stderr reads %d\n", n);
if (n > 0) {
if (buf[n - 1] != '\n')
buf[n++] = '\n';
buf[n] = '\0';
lwsl_notice("CGI-stderr: %s\n", buf);
}
break;
}
break;
case LWS_CALLBACK_CGI_TERMINATED:
//lwsl_notice("LWS_CALLBACK_CGI_TERMINATED\n");
/* because we sent on openended http, close the connection */
return -1;
case LWS_CALLBACK_CGI_STDIN_DATA: /* POST body for stdin */
//lwsl_notice("LWS_CALLBACK_CGI_STDIN_DATA\n");
pss->args = *((struct lws_cgi_args *)in);
n = write(lws_get_socket_fd(pss->args.stdwsi[LWS_STDIN]),
pss->args.data, pss->args.len);
//lwsl_notice("LWS_CALLBACK_CGI_STDIN_DATA: write says %d", n);
if (n < pss->args.len)
lwsl_notice("LWS_CALLBACK_CGI_STDIN_DATA: sent %d only %d went",
n, pss->args.len);
return n;
#endif
/*
* callbacks for managing the external poll() array appear in
* protocol 0 callback
*/
case LWS_CALLBACK_LOCK_POLL:
/*
* lock mutex to protect pollfd state
* called before any other POLL related callback
* if protecting wsi lifecycle change, len == 1
*/
test_server_lock(len);
break;
case LWS_CALLBACK_UNLOCK_POLL:
/*
* unlock mutex to protect pollfd state when
* called after any other POLL related callback
* if protecting wsi lifecycle change, len == 1
*/
test_server_unlock(len);
break;
#ifdef EXTERNAL_POLL
case LWS_CALLBACK_ADD_POLL_FD:
if (count_pollfds >= max_poll_elements) {
lwsl_err("LWS_CALLBACK_ADD_POLL_FD: too many sockets to track\n");
return 1;
}
fd_lookup[pa->fd] = count_pollfds;
pollfds[count_pollfds].fd = pa->fd;
pollfds[count_pollfds].events = pa->events;
pollfds[count_pollfds++].revents = 0;
break;
case LWS_CALLBACK_DEL_POLL_FD:
if (!--count_pollfds)
break;
m = fd_lookup[pa->fd];
/* have the last guy take up the vacant slot */
pollfds[m] = pollfds[count_pollfds];
fd_lookup[pollfds[count_pollfds].fd] = m;
break;
case LWS_CALLBACK_CHANGE_MODE_POLL_FD:
pollfds[fd_lookup[pa->fd]].events = pa->events;
break;
#endif
case LWS_CALLBACK_GET_THREAD_ID:
/*
* if you will call "lws_callback_on_writable"
* from a different thread, return the caller thread ID
* here so lws can use this information to work out if it
* should signal the poll() loop to exit and restart early
*/
/* return pthread_getthreadid_np(); */
break;
default:
break;
}
return 0;
/* if we're on HTTP1.1 or 2.0, will keep the idle connection alive */
try_to_reuse:
if (lws_http_transaction_completed(wsi))
return -1;
return 0;
}

621
lwsws/lejp.c Normal file
View file

@ -0,0 +1,621 @@
/*
* Lightweight Embedded JSON Parser
*
* Copyright (C) 2013 Andy Green <andy@warmcat.com>
* This code is licensed under LGPL 2.1
* http://www.gnu.org/licenses/lgpl-2.1.html
*/
#include <string.h>
#include "lejp.h"
#include <stdio.h>
/**
* lejp_construct - prepare a struct lejp_ctx for use
*
* @ctx: pointer to your struct lejp_ctx
* @callback: your user callback which will received parsed tokens
* @user: optional user data pointer untouched by lejp
* @paths: your array of name elements you are interested in
* @count_paths: ARRAY_SIZE() of @paths
*
* Prepares your context struct for use with lejp
*/
void
lejp_construct(struct lejp_ctx *ctx,
char (*callback)(struct lejp_ctx *ctx, char reason), void *user,
const char * const *paths, unsigned char count_paths)
{
ctx->st[0].s = 0;
ctx->st[0].p = 0;
ctx->st[0].i = 0;
ctx->st[0].b = 0;
ctx->sp = 0;
ctx->ipos = 0;
ctx->ppos = 0;
ctx->path_match = 0;
ctx->path[0] = '\0';
ctx->callback = callback;
ctx->user = user;
ctx->paths = paths;
ctx->count_paths = count_paths;
ctx->line = 1;
ctx->callback(ctx, LEJPCB_CONSTRUCTED);
}
/**
* lejp_destruct - retire a previously constructed struct lejp_ctx
*
* @ctx: pointer to your struct lejp_ctx
*
* lejp does not perform any allocations, but since your user code might, this
* provides a one-time LEJPCB_DESTRUCTED callback at destruction time where
* you can clean up in your callback.
*/
void
lejp_destruct(struct lejp_ctx *ctx)
{
/* no allocations... just let callback know what it happening */
ctx->callback(ctx, LEJPCB_DESTRUCTED);
}
/**
* lejp_change_callback - switch to a different callback from now on
*
* @ctx: pointer to your struct lejp_ctx
* @callback: your user callback which will received parsed tokens
*
* This tells the old callback it was destroyed, in case you want to take any
* action because that callback "lost focus", then changes to the new
* callback and tells it first that it was constructed, and then started.
*
* Changing callback is a cheap and powerful trick to split out handlers
* according to information earlier in the parse. For example you may have
* a JSON pair "schema" whose value defines what can be expected for the rest
* of the JSON. Rather than having one huge callback for all cases, you can
* have an initial one looking for "schema" which then calls
* lejp_change_callback() to a handler specific for the schema.
*
* Notice that afterwards, you need to construct the context again anyway to
* parse another JSON object, and the callback is reset then to the main,
* schema-interpreting one. The construction action is very lightweight.
*/
void
lejp_change_callback(struct lejp_ctx *ctx,
char (*callback)(struct lejp_ctx *ctx, char reason))
{
ctx->callback(ctx, LEJPCB_DESTRUCTED);
ctx->callback = callback;
ctx->callback(ctx, LEJPCB_CONSTRUCTED);
ctx->callback(ctx, LEJPCB_START);
}
static void
lejp_check_path_match(struct lejp_ctx *ctx)
{
int n;
/* we only need to check if a match is not active */
for (n = 0; !ctx->path_match && n < ctx->count_paths; n++) {
if (strcmp(ctx->path, ctx->paths[n]))
continue;
ctx->path_match = n + 1;
ctx->path_match_len = ctx->ppos;
return;
}
}
/**
* lejp_parse - interpret some more incoming data incrementally
*
* @ctx: previously constructed parsing context
* @json: char buffer with the new data to interpret
* @len: amount of data in the buffer
*
* Because lejp is a stream parser, it incrementally parses as new data
* becomes available, maintaining all state in the context struct. So an
* incomplete JSON is a normal situation, getting you a LEJP_CONTINUE
* return, signalling there's no error but to call again with more data when
* it comes to complete the parsing. Successful parsing completes with a
* 0 or positive integer indicating how much of the last input buffer was
* unused.
*/
int
lejp_parse(struct lejp_ctx *ctx, const unsigned char *json, int len)
{
unsigned char c, n, s, ret = LEJP_REJECT_UNKNOWN;
static const char esc_char[] = "\"\\/bfnrt";
static const char esc_tran[] = "\"\\/\b\f\n\r\t";
static const char tokens[] = "rue alse ull ";
if (!ctx->sp && !ctx->ppos)
ctx->callback(ctx, LEJPCB_START);
while (len--) {
c = *json++;
s = ctx->st[ctx->sp].s;
/* skip whitespace unless we should care */
if (c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '#') {
if (c == '\n') {
ctx->line++;
ctx->st[ctx->sp].s &= ~LEJP_FLAG_WS_COMMENTLINE;
}
if (!(s & LEJP_FLAG_WS_KEEP)) {
if (c == '#')
ctx->st[ctx->sp].s |=
LEJP_FLAG_WS_COMMENTLINE;
continue;
}
}
if (ctx->st[ctx->sp].s & LEJP_FLAG_WS_COMMENTLINE)
continue;
switch (s) {
case LEJP_IDLE:
if (c != '{') {
ret = LEJP_REJECT_IDLE_NO_BRACE;
goto reject;
}
ctx->callback(ctx, LEJPCB_OBJECT_START);
ctx->st[ctx->sp].s = LEJP_MEMBERS;
break;
case LEJP_MEMBERS:
if (c == '}') {
ctx->st[ctx->sp].s = LEJP_IDLE;
ret = LEJP_REJECT_MEMBERS_NO_CLOSE;
goto reject;
}
ctx->st[ctx->sp].s = LEJP_M_P;
goto redo_character;
case LEJP_M_P:
if (c != '\"') {
ret = LEJP_REJECT_MP_NO_OPEN_QUOTE;
goto reject;
}
/* push */
ctx->st[ctx->sp].s = LEJP_MP_DELIM;
c = LEJP_MP_STRING;
goto add_stack_level;
case LEJP_MP_STRING:
if (c == '\"') {
if (!ctx->sp) {
ret = LEJP_REJECT_MP_STRING_UNDERRUN;
goto reject;
}
if (ctx->st[ctx->sp - 1].s != LEJP_MP_DELIM) {
ctx->buf[ctx->npos] = '\0';
if (ctx->callback(ctx,
LEJPCB_VAL_STR_END) < 0) {
ret = LEJP_REJECT_CALLBACK;
goto reject;
}
}
/* pop */
ctx->sp--;
break;
}
if (c == '\\') {
ctx->st[ctx->sp].s = LEJP_MP_STRING_ESC;
break;
}
if (c < ' ') {/* "control characters" not allowed */
ret = LEJP_REJECT_MP_ILLEGAL_CTRL;
goto reject;
}
goto emit_string_char;
case LEJP_MP_STRING_ESC:
if (c == 'u') {
ctx->st[ctx->sp].s = LEJP_MP_STRING_ESC_U1;
ctx->uni = 0;
break;
}
for (n = 0; n < sizeof(esc_char); n++) {
if (c != esc_char[n])
continue;
/* found it */
c = esc_tran[n];
ctx->st[ctx->sp].s = LEJP_MP_STRING;
goto emit_string_char;
}
ret = LEJP_REJECT_MP_STRING_ESC_ILLEGAL_ESC;
/* illegal escape char */
goto reject;
case LEJP_MP_STRING_ESC_U1:
case LEJP_MP_STRING_ESC_U2:
case LEJP_MP_STRING_ESC_U3:
case LEJP_MP_STRING_ESC_U4:
ctx->uni <<= 4;
if (c >= '0' && c <= '9')
ctx->uni |= c - '0';
else
if (c >= 'a' && c <= 'f')
ctx->uni = c - 'a' + 10;
else
if (c >= 'A' && c <= 'F')
ctx->uni = c - 'A' + 10;
else {
ret = LEJP_REJECT_ILLEGAL_HEX;
goto reject;
}
ctx->st[ctx->sp].s++;
switch (s) {
case LEJP_MP_STRING_ESC_U2:
if (ctx->uni < 0x08)
break;
/*
* 0x08-0xff (0x0800 - 0xffff)
* emit 3-byte UTF-8
*/
c = 0xe0 | ((ctx->uni >> 4) & 0xf);
goto emit_string_char;
case LEJP_MP_STRING_ESC_U3:
if (ctx->uni >= 0x080) {
/*
* 0x080 - 0xfff (0x0800 - 0xffff)
* middle 3-byte seq
* send ....XXXXXX..
*/
c = 0x80 | ((ctx->uni >> 2) & 0x3f);
goto emit_string_char;
}
if (ctx->uni < 0x008)
break;
/*
* 0x008 - 0x7f (0x0080 - 0x07ff)
* start 2-byte seq
*/
c = 0xc0 | (ctx->uni >> 2);
goto emit_string_char;
case LEJP_MP_STRING_ESC_U4:
if (ctx->uni >= 0x0080)
/* end of 2 or 3-byte seq */
c = 0x80 | (ctx->uni & 0x3f);
else
/* literal */
c = (unsigned char)ctx->uni;
ctx->st[ctx->sp].s = LEJP_MP_STRING;
goto emit_string_char;
default:
break;
}
break;
case LEJP_MP_DELIM:
if (c != ':') {
ret = LEJP_REJECT_MP_DELIM_MISSING_COLON;
goto reject;
}
ctx->st[ctx->sp].s = LEJP_MP_VALUE;
ctx->path[ctx->ppos] = '\0';
lejp_check_path_match(ctx);
ctx->callback(ctx, LEJPCB_PAIR_NAME);
break;
case LEJP_MP_VALUE:
if (c >= '0' && c <= '9') {
ctx->npos = 0;
ctx->dcount = 0;
ctx->f = 0;
ctx->st[ctx->sp].s = LEJP_MP_VALUE_NUM_INT;
goto redo_character;
}
switch (c) {
case'\"':
/* push */
ctx->st[ctx->sp].s = LEJP_MP_COMMA_OR_END;
c = LEJP_MP_STRING;
ctx->npos = 0;
ctx->buf[0] = '\0';
ctx->callback(ctx, LEJPCB_VAL_STR_START);
goto add_stack_level;
case '{':
/* push */
ctx->st[ctx->sp].s = LEJP_MP_COMMA_OR_END;
c = LEJP_MEMBERS;
lejp_check_path_match(ctx);
ctx->callback(ctx, LEJPCB_OBJECT_START);
ctx->path_match = 0;
goto add_stack_level;
case '[':
/* push */
ctx->st[ctx->sp].s = LEJP_MP_ARRAY_END;
c = LEJP_MP_VALUE;
ctx->path[ctx->ppos++] = '[';
ctx->path[ctx->ppos++] = ']';
ctx->path[ctx->ppos] = '\0';
ctx->callback(ctx, LEJPCB_ARRAY_START);
ctx->i[ctx->ipos++] = 0;
if (ctx->ipos > ARRAY_SIZE(ctx->i)) {
ret = LEJP_REJECT_MP_DELIM_ISTACK;
goto reject;
}
goto add_stack_level;
case 't': /* true */
ctx->uni = 0;
ctx->st[ctx->sp].s = LEJP_MP_VALUE_TOK;
break;
case 'f':
ctx->uni = 4;
ctx->st[ctx->sp].s = LEJP_MP_VALUE_TOK;
break;
case 'n':
ctx->uni = 4 + 5;
ctx->st[ctx->sp].s = LEJP_MP_VALUE_TOK;
break;
default:
ret = LEJP_REJECT_MP_DELIM_BAD_VALUE_START;
goto reject;
}
break;
case LEJP_MP_VALUE_NUM_INT:
if (!ctx->npos && c == '-') {
ctx->f |= LEJP_SEEN_MINUS;
goto append_npos;
}
if (ctx->dcount < 10 && c >= '0' && c <= '9') {
if (ctx->f & LEJP_SEEN_POINT)
ctx->f |= LEJP_SEEN_POST_POINT;
ctx->dcount++;
goto append_npos;
}
if (c == '.') {
if (ctx->dcount || (ctx->f & LEJP_SEEN_POINT)) {
ret = LEJP_REJECT_MP_VAL_NUM_FORMAT;
goto reject;
}
ctx->f |= LEJP_SEEN_POINT;
goto append_npos;
}
/*
* before exponent, if we had . we must have had at
* least one more digit
*/
if ((ctx->f &
(LEJP_SEEN_POINT | LEJP_SEEN_POST_POINT)) ==
LEJP_SEEN_POINT) {
ret = LEJP_REJECT_MP_VAL_NUM_INT_NO_FRAC;
goto reject;
}
if (c == 'e' || c == 'E') {
if (ctx->f & LEJP_SEEN_EXP) {
ret = LEJP_REJECT_MP_VAL_NUM_FORMAT;
goto reject;
}
ctx->f |= LEJP_SEEN_EXP;
ctx->st[ctx->sp].s = LEJP_MP_VALUE_NUM_EXP;
goto append_npos;
}
/* if none of the above, did we even have a number? */
if (!ctx->dcount) {
ret = LEJP_REJECT_MP_VAL_NUM_FORMAT;
goto reject;
}
ctx->buf[ctx->npos] = '\0';
if (ctx->f & LEJP_SEEN_POINT)
ctx->callback(ctx, LEJPCB_VAL_NUM_FLOAT);
else
ctx->callback(ctx, LEJPCB_VAL_NUM_INT);
/* then this is the post-number character, loop */
ctx->st[ctx->sp].s = LEJP_MP_COMMA_OR_END;
goto redo_character;
case LEJP_MP_VALUE_NUM_EXP:
ctx->st[ctx->sp].s = LEJP_MP_VALUE_NUM_INT;
if (c >= '0' && c <= '9')
goto redo_character;
if (c == '+' || c == '-')
goto append_npos;
ret = LEJP_REJECT_MP_VAL_NUM_EXP_BAD_EXP;
goto reject;
case LEJP_MP_VALUE_TOK: /* true, false, null */
if (c != tokens[ctx->uni]) {
ret = LEJP_REJECT_MP_VAL_TOK_UNKNOWN;
goto reject;
}
ctx->uni++;
if (tokens[ctx->uni] != ' ')
break;
switch (ctx->uni) {
case 3:
ctx->buf[0] = '1';
ctx->buf[1] = '\0';
ctx->callback(ctx, LEJPCB_VAL_TRUE);
break;
case 8:
ctx->buf[0] = '0';
ctx->buf[1] = '\0';
ctx->callback(ctx, LEJPCB_VAL_FALSE);
break;
case 12:
ctx->buf[0] = '\0';
ctx->callback(ctx, LEJPCB_VAL_NULL);
break;
}
ctx->st[ctx->sp].s = LEJP_MP_COMMA_OR_END;
break;
case LEJP_MP_COMMA_OR_END:
ctx->path[ctx->ppos] = '\0';
if (c == ',') {
/* increment this stack level's index */
ctx->st[ctx->sp].s = LEJP_M_P;
if (!ctx->sp) {
ctx->ppos = 0;
/*
* since we came back to root level,
* no path can still match
*/
ctx->path_match = 0;
break;
}
ctx->ppos = ctx->st[ctx->sp - 1].p;
ctx->path[ctx->ppos] = '\0';
if (ctx->path_match &&
ctx->ppos <= ctx->path_match_len)
/*
* we shrank the path to be
* smaller than the matching point
*/
ctx->path_match = 0;
if (ctx->st[ctx->sp - 1].s != LEJP_MP_ARRAY_END)
break;
/* top level is definitely an array... */
if (ctx->ipos)
ctx->i[ctx->ipos - 1]++;
ctx->st[ctx->sp].s = LEJP_MP_VALUE;
break;
}
if (c == ']') {
if (!ctx->sp) {
ret = LEJP_REJECT_MP_C_OR_E_UNDERF;
goto reject;
}
/* pop */
ctx->sp--;
if (ctx->st[ctx->sp].s != LEJP_MP_ARRAY_END) {
ret = LEJP_REJECT_MP_C_OR_E_NOTARRAY;
goto reject;
}
/* drop the path [n] bit */
ctx->ppos = ctx->st[ctx->sp - 1].p;
ctx->ipos = ctx->st[ctx->sp - 1].i;
ctx->path[ctx->ppos] = '\0';
if (ctx->path_match &&
ctx->ppos <= ctx->path_match_len)
/*
* we shrank the path to be
* smaller than the matching point
*/
ctx->path_match = 0;
/* do LEJP_MP_ARRAY_END processing */
goto redo_character;
}
if (c == '}') {
if (ctx->sp == 0) {
lejp_check_path_match(ctx);
ctx->callback(ctx, LEJPCB_OBJECT_END);
ctx->callback(ctx, LEJPCB_COMPLETE);
/* done, return unused amount */
return len;
}
/* pop */
ctx->sp--;
ctx->ppos = ctx->st[ctx->sp - 1].p;
ctx->ipos = ctx->st[ctx->sp - 1].i;
ctx->path[ctx->ppos] = '\0';
if (ctx->path_match &&
ctx->ppos <= ctx->path_match_len)
/*
* we shrank the path to be
* smaller than the matching point
*/
ctx->path_match = 0;
lejp_check_path_match(ctx);
ctx->callback(ctx, LEJPCB_OBJECT_END);
break;
}
ret = LEJP_REJECT_MP_C_OR_E_NEITHER;
goto reject;
case LEJP_MP_ARRAY_END:
ctx->path[ctx->ppos] = '\0';
if (c == ',') {
/* increment this stack level's index */
if (ctx->ipos)
ctx->i[ctx->ipos - 1]++;
ctx->st[ctx->sp].s = LEJP_MP_VALUE;
if (ctx->sp)
ctx->ppos = ctx->st[ctx->sp - 1].p;
ctx->path[ctx->ppos] = '\0';
break;
}
if (c != ']') {
ret = LEJP_REJECT_MP_ARRAY_END_MISSING;
goto reject;
}
ctx->st[ctx->sp].s = LEJP_MP_COMMA_OR_END;
ctx->callback(ctx, LEJPCB_ARRAY_END);
break;
}
continue;
emit_string_char:
if (!ctx->sp || ctx->st[ctx->sp - 1].s != LEJP_MP_DELIM) {
/* assemble the string value into chunks */
ctx->buf[ctx->npos++] = c;
if (ctx->npos == sizeof(ctx->buf) - 1) {
ctx->callback(ctx, LEJPCB_VAL_STR_CHUNK);
ctx->npos = 0;
}
continue;
}
/* name part of name:value pair */
ctx->path[ctx->ppos++] = c;
continue;
add_stack_level:
/* push on to the object stack */
if (ctx->ppos && ctx->st[ctx->sp].s != LEJP_MP_COMMA_OR_END &&
ctx->st[ctx->sp].s != LEJP_MP_ARRAY_END)
ctx->path[ctx->ppos++] = '.';
ctx->st[ctx->sp].p = ctx->ppos;
ctx->st[ctx->sp].i = ctx->ipos;
if (++ctx->sp == ARRAY_SIZE(ctx->st)) {
ret = LEJP_REJECT_STACK_OVERFLOW;
goto reject;
}
ctx->path[ctx->ppos] = '\0';
ctx->st[ctx->sp].s = c;
ctx->st[ctx->sp].b = 0;
continue;
append_npos:
if (ctx->npos >= sizeof(ctx->buf)) {
ret = LEJP_REJECT_NUM_TOO_LONG;
goto reject;
}
ctx->buf[ctx->npos++] = c;
continue;
redo_character:
json--;
len++;
}
return LEJP_CONTINUE;
reject:
ctx->callback(ctx, LEJPCB_FAILED);
return ret;
}

227
lwsws/lejp.h Normal file
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@ -0,0 +1,227 @@
struct lejp_ctx;
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(_x) (sizeof(_x) / sizeof(_x[0]))
#endif
#define LEJP_FLAG_WS_KEEP 64
#define LEJP_FLAG_WS_COMMENTLINE 32
enum lejp_states {
LEJP_IDLE = 0,
LEJP_MEMBERS = 1,
LEJP_M_P = 2,
LEJP_MP_STRING = LEJP_FLAG_WS_KEEP | 3,
LEJP_MP_STRING_ESC = LEJP_FLAG_WS_KEEP | 4,
LEJP_MP_STRING_ESC_U1 = LEJP_FLAG_WS_KEEP | 5,
LEJP_MP_STRING_ESC_U2 = LEJP_FLAG_WS_KEEP | 6,
LEJP_MP_STRING_ESC_U3 = LEJP_FLAG_WS_KEEP | 7,
LEJP_MP_STRING_ESC_U4 = LEJP_FLAG_WS_KEEP | 8,
LEJP_MP_DELIM = 9,
LEJP_MP_VALUE = 10,
LEJP_MP_VALUE_NUM_INT = LEJP_FLAG_WS_KEEP | 11,
LEJP_MP_VALUE_NUM_EXP = LEJP_FLAG_WS_KEEP | 12,
LEJP_MP_VALUE_TOK = LEJP_FLAG_WS_KEEP | 13,
LEJP_MP_COMMA_OR_END = 14,
LEJP_MP_ARRAY_END = 15,
};
enum lejp_reasons {
LEJP_CONTINUE = -1,
LEJP_REJECT_IDLE_NO_BRACE = -2,
LEJP_REJECT_MEMBERS_NO_CLOSE = -3,
LEJP_REJECT_MP_NO_OPEN_QUOTE = -4,
LEJP_REJECT_MP_STRING_UNDERRUN = -5,
LEJP_REJECT_MP_ILLEGAL_CTRL = -6,
LEJP_REJECT_MP_STRING_ESC_ILLEGAL_ESC = -7,
LEJP_REJECT_ILLEGAL_HEX = -8,
LEJP_REJECT_MP_DELIM_MISSING_COLON = -9,
LEJP_REJECT_MP_DELIM_BAD_VALUE_START = -10,
LEJP_REJECT_MP_VAL_NUM_INT_NO_FRAC = -11,
LEJP_REJECT_MP_VAL_NUM_FORMAT = -12,
LEJP_REJECT_MP_VAL_NUM_EXP_BAD_EXP = -13,
LEJP_REJECT_MP_VAL_TOK_UNKNOWN = -14,
LEJP_REJECT_MP_C_OR_E_UNDERF = -15,
LEJP_REJECT_MP_C_OR_E_NOTARRAY = -16,
LEJP_REJECT_MP_ARRAY_END_MISSING = -17,
LEJP_REJECT_STACK_OVERFLOW = -18,
LEJP_REJECT_MP_DELIM_ISTACK = -19,
LEJP_REJECT_NUM_TOO_LONG = -20,
LEJP_REJECT_MP_C_OR_E_NEITHER = -21,
LEJP_REJECT_UNKNOWN = -22,
LEJP_REJECT_CALLBACK = -23
};
#define LEJP_FLAG_CB_IS_VALUE 64
enum lejp_callbacks {
LEJPCB_CONSTRUCTED = 0,
LEJPCB_DESTRUCTED = 1,
LEJPCB_START = 2,
LEJPCB_COMPLETE = 3,
LEJPCB_FAILED = 4,
LEJPCB_PAIR_NAME = 5,
LEJPCB_VAL_TRUE = LEJP_FLAG_CB_IS_VALUE | 6,
LEJPCB_VAL_FALSE = LEJP_FLAG_CB_IS_VALUE | 7,
LEJPCB_VAL_NULL = LEJP_FLAG_CB_IS_VALUE | 8,
LEJPCB_VAL_NUM_INT = LEJP_FLAG_CB_IS_VALUE | 9,
LEJPCB_VAL_NUM_FLOAT = LEJP_FLAG_CB_IS_VALUE | 10,
LEJPCB_VAL_STR_START = 11, /* notice handle separately */
LEJPCB_VAL_STR_CHUNK = LEJP_FLAG_CB_IS_VALUE | 12,
LEJPCB_VAL_STR_END = LEJP_FLAG_CB_IS_VALUE | 13,
LEJPCB_ARRAY_START = 14,
LEJPCB_ARRAY_END = 15,
LEJPCB_OBJECT_START = 16,
LEJPCB_OBJECT_END = 17
};
/**
* _lejp_callback() - User parser actions
* @ctx: LEJP context
* @reason: Callback reason
*
* Your user callback is associated with the context at construction time,
* and receives calls as the parsing progresses.
*
* All of the callbacks may be ignored and just return 0.
*
* The reasons it might get called, found in @reason, are:
*
* LEJPCB_CONSTRUCTED: The context was just constructed... you might want to
* perform one-time allocation for the life of the context.
*
* LEJPCB_DESTRUCTED: The context is being destructed... if you made any
* allocations at construction-time, you can free them now
*
* LEJPCB_START: Parsing is beginning at the first byte of input
*
* LEJPCB_COMPLETE: Parsing has completed successfully. You'll get a 0 or
* positive return code from lejp_parse indicating the
* amount of unused bytes left in the input buffer
*
* LEJPCB_FAILED: Parsing failed. You'll get a negative error code
* returned from lejp_parse
*
* LEJPCB_PAIR_NAME: When a "name":"value" pair has had the name parsed,
* this callback occurs. You can find the new name at
* the end of ctx->path[]
*
* LEJPCB_VAL_TRUE: The "true" value appeared
*
* LEJPCB_VAL_FALSE: The "false" value appeared
*
* LEJPCB_VAL_NULL: The "null" value appeared
*
* LEJPCB_VAL_NUM_INT: A string representing an integer is in ctx->buf
*
* LEJPCB_VAL_NUM_FLOAT: A string representing a float is in ctx->buf
*
* LEJPCB_VAL_STR_START: We are starting to parse a string, no data yet
*
* LEJPCB_VAL_STR_CHUNK: We parsed LEJP_STRING_CHUNK -1 bytes of string data in
* ctx->buf, which is as much as we can buffer, so we are
* spilling it. If all your strings are less than
* LEJP_STRING_CHUNK - 1 bytes, you will never see this
* callback.
*
* LEJPCB_VAL_STR_END: String parsing has completed, the last chunk of the
* string is in ctx->buf.
*
* LEJPCB_ARRAY_START: An array started
*
* LEJPCB_ARRAY_END: An array ended
*
* LEJPCB_OBJECT_START: An object started
*
* LEJPCB_OBJECT_END: An object ended
*/
extern char _lejp_callback(struct lejp_ctx *ctx, char reason);
typedef char (*lejp_callback)(struct lejp_ctx *ctx, char reason);
#ifndef LEJP_MAX_DEPTH
#define LEJP_MAX_DEPTH 12
#endif
#ifndef LEJP_MAX_INDEX_DEPTH
#define LEJP_MAX_INDEX_DEPTH 5
#endif
#ifndef LEJP_MAX_PATH
#define LEJP_MAX_PATH 128
#endif
#ifndef LEJP_STRING_CHUNK
/* must be >= 30 to assemble floats */
#define LEJP_STRING_CHUNK 64
#endif
enum num_flags {
LEJP_SEEN_MINUS = (1 << 0),
LEJP_SEEN_POINT = (1 << 1),
LEJP_SEEN_POST_POINT = (1 << 2),
LEJP_SEEN_EXP = (1 << 3)
};
struct _lejp_stack {
char s; /* lejp_state stack*/
char p; /* path length */
char i; /* index array length */
char b; /* user bitfield */
};
struct lejp_ctx {
/* sorted by type for most compact alignment
*
* pointers
*/
char (*callback)(struct lejp_ctx *ctx, char reason);
void *user;
const char * const *paths;
/* arrays */
struct _lejp_stack st[LEJP_MAX_DEPTH];
unsigned short i[LEJP_MAX_INDEX_DEPTH]; /* index array */
char path[LEJP_MAX_PATH];
char buf[LEJP_STRING_CHUNK];
/* int */
unsigned int line;
/* short */
unsigned short uni;
/* char */
unsigned char npos;
unsigned char dcount;
unsigned char f;
unsigned char sp; /* stack head */
unsigned char ipos; /* index stack depth */
unsigned char ppos;
unsigned char count_paths;
unsigned char path_match;
unsigned char path_match_len;
};
extern void
lejp_construct(struct lejp_ctx *ctx,
char (*callback)(struct lejp_ctx *ctx, char reason), void *user,
const char * const *paths, unsigned char paths_count);
extern void
lejp_destruct(struct lejp_ctx *ctx);
extern int
lejp_parse(struct lejp_ctx *ctx, const unsigned char *json, int len);
extern void
lejp_change_callback(struct lejp_ctx *ctx,
char (*callback)(struct lejp_ctx *ctx, char reason));

62
lwsws/lwsws.h Normal file
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@ -0,0 +1,62 @@
#if defined(_WIN32) && defined(EXTERNAL_POLL)
#define WINVER 0x0600
#define _WIN32_WINNT 0x0600
#define poll(fdArray, fds, timeout) WSAPoll((LPWSAPOLLFD)(fdArray), (ULONG)(fds), (INT)(timeout))
#endif
#include "lws_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <signal.h>
#include <string.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <assert.h>
#ifndef _WIN32
#include <dirent.h>
#endif
#include "../lib/libwebsockets.h"
#include "lejp.h"
#ifdef _WIN32
#include <io.h>
#include "gettimeofday.h"
#else
#include <syslog.h>
#include <sys/time.h>
#include <unistd.h>
#endif
extern void test_server_lock(int care);
extern void test_server_unlock(int care);
#ifndef __func__
#define __func__ __FUNCTION__
#endif
struct per_session_data__http {
lws_filefd_type fd;
#ifdef LWS_WITH_CGI
struct lws_cgi_args args;
#endif
#if defined(LWS_WITH_CGI) || !defined(LWS_NO_CLIENT)
int reason_bf;
#endif
unsigned int client_finished:1;
};
extern int
lwsws_get_config_globals(struct lws_context_creation_info *info, const char *d,
char **config_strings, int *len);
extern int
lwsws_get_config_vhosts(struct lws_context *context,
struct lws_context_creation_info *info, const char *d,
char **config_strings, int *len);
extern int
callback_http(struct lws *wsi, enum lws_callback_reasons reason,
void *user, void *in, size_t len);

238
lwsws/main.c Normal file
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@ -0,0 +1,238 @@
/*
* libwebsockets web server application
*
* Copyright (C) 2010-2016 Andy Green <andy@warmcat.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include "lwsws.h"
int debug_level = 7;
volatile int force_exit = 0;
struct lws_context *context;
static char *config_dir = "/etc/lwsws/conf.d";
/*
* strings and objects from the config file parsing are created here
*/
#define LWSWS_CONFIG_STRING_SIZE (32 * 1024)
char config_strings[LWSWS_CONFIG_STRING_SIZE];
/* singlethreaded version --> no locks */
void test_server_lock(int care)
{
}
void test_server_unlock(int care)
{
}
enum demo_protocols {
/* always first */
PROTOCOL_HTTP = 0,
/* always last */
DEMO_PROTOCOL_COUNT
};
/* list of supported protocols and callbacks */
static struct lws_protocols protocols[] = {
/* first protocol must always be HTTP handler */
{
"http-only", /* name */
callback_http, /* callback */
sizeof (struct per_session_data__http), /* per_session_data_size */
0, /* max frame size / rx buffer */
},
};
void sighandler(int sig)
{
force_exit = 1;
lws_cancel_service(context);
}
static const struct lws_extension exts[] = {
{
"permessage-deflate",
lws_extension_callback_pm_deflate,
"permessage-deflate"
},
{ NULL, NULL, NULL /* terminator */ }
};
static struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "debug", required_argument, NULL, 'd' },
{ "configdir", required_argument, NULL, 'c' },
#ifndef LWS_NO_DAEMONIZE
{ "daemonize", no_argument, NULL, 'D' },
#endif
{ NULL, 0, 0, 0 }
};
#ifdef LWS_USE_LIBUV
void signal_cb(uv_signal_t *watcher, int signum)
{
lwsl_err("Signal %d caught, exiting...\n", watcher->signum);
switch (watcher->signum) {
case SIGTERM:
case SIGINT:
break;
default:
signal(SIGABRT, SIG_DFL);
abort();
break;
}
lws_libuv_stop(context);
}
#endif
int main(int argc, char **argv)
{
struct lws_context_creation_info info;
char *cs = config_strings;
int opts = 0, cs_len = sizeof(config_strings) - 1;
int n = 0;
#ifndef _WIN32
int syslog_options = LOG_PID | LOG_PERROR;
#endif
#ifndef LWS_NO_DAEMONIZE
int daemonize = 0;
#endif
memset(&info, 0, sizeof info);
while (n >= 0) {
n = getopt_long(argc, argv, "hd:c:D", options, NULL);
if (n < 0)
continue;
switch (n) {
#ifndef LWS_NO_DAEMONIZE
case 'D':
daemonize = 1;
#ifndef _WIN32
syslog_options &= ~LOG_PERROR;
#endif
break;
#endif
case 'd':
debug_level = atoi(optarg);
break;
case 'c':
strncpy(config_dir, optarg, sizeof(config_dir) - 1);
config_dir[sizeof(config_dir) - 1] = '\0';
break;
case 'h':
fprintf(stderr, "Usage: lwsws [-c <config dir>] "
"[-d <log bitfield>] [-D] [--help]\n");
exit(1);
}
}
#if !defined(LWS_NO_DAEMONIZE) && !defined(WIN32)
/*
* normally lock path would be /var/lock/lwsts or similar, to
* simplify getting started without having to take care about
* permissions or running as root, set to /tmp/.lwsts-lock
*/
if (daemonize && lws_daemonize("/tmp/.lwsts-lock")) {
fprintf(stderr, "Failed to daemonize\n");
return 10;
}
#endif
signal(SIGINT, sighandler);
#ifndef _WIN32
/* we will only try to log things according to our debug_level */
setlogmask(LOG_UPTO (LOG_DEBUG));
openlog("lwsws", syslog_options, LOG_DAEMON);
#endif
lws_set_log_level(debug_level, lwsl_emit_syslog);
lwsl_notice("lwsws libwebsockets web server - license GPL2.1\n");
lwsl_notice("(C) Copyright 2010-2016 Andy Green <andy@warmcat.com>\n");
memset(&info, 0, sizeof(info));
info.max_http_header_pool = 16;
info.options = opts | LWS_SERVER_OPTION_VALIDATE_UTF8 |
LWS_SERVER_OPTION_EXPLICIT_VHOSTS;
#ifdef LWS_USE_LIBUV
info.options |= LWS_SERVER_OPTION_LIBUV;
#endif
lwsl_notice("Using config dir: \"%s\"\n", config_dir);
/*
* first go through the config for creating the outer context
*/
if (lwsws_get_config_globals(&info, config_dir, &cs, &cs_len))
goto bail;
context = lws_create_context(&info);
if (context == NULL) {
lwsl_err("libwebsocket init failed\n");
return -1;
}
/*
* then create the vhosts...
*
* protocols and extensions are the global list of possible
* protocols and extensions offered serverwide. The vhosts
* in the config files enable the ones they want to offer
* per vhost.
*
* The first protocol is always included for http support.
*/
info.protocols = protocols;
info.extensions = exts;
if (lwsws_get_config_vhosts(context, &info, config_dir, &cs, &cs_len))
goto bail;
#ifdef LWS_USE_LIBUV
lws_uv_sigint_cfg(context, 1, signal_cb);
lws_uv_initloop(context, NULL, 0);
lws_libuv_run(context, 0);
#else
n = 0;
while (n >= 0 && !force_exit) {
n = lws_service(context, 50);
}
#endif
bail:
lws_context_destroy(context);
lwsl_notice("lwsws exited cleanly\n");
#ifndef _WIN32
closelog();
#endif
return 0;
}