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/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef _WINSOCK_DEPRECATED_NO_WARNINGS
#define _WINSOCK_DEPRECATED_NO_WARNINGS
#endif
#include "private-lib-core.h"
/*
* ie, if the plugins api needed at all
*/
#if defined(LWS_WITH_PLUGINS_API) && (UV_VERSION_MAJOR > 0)
const lws_plugin_header_t *
lws_plat_dlopen(struct lws_plugin **pplugin, const char *libpath,
const char *sofilename, const char *_class,
each_plugin_cb_t each, void *each_user)
{
const lws_plugin_header_t *hdr;
struct lws_plugin *pin;
char sym[96], *dot;
uv_lib_t lib;
void *v;
int m;
lib.errmsg = NULL;
lib.handle = NULL;
if (uv_dlopen(libpath, &lib)) {
uv_dlerror(&lib);
lwsl_err("Error loading DSO: %s\n", lib.errmsg);
uv_dlclose(&lib);
return NULL;
}
/* we could open it... can we get his export struct? */
m = lws_snprintf(sym, sizeof(sym) - 1, "%s", sofilename);
if (m < 4)
goto bail;
dot = strchr(sym, '.');
if (dot)
*dot = '\0'; /* snip the .so or .lib or what-have-you*/
if (uv_dlsym(&lib, sym, &v)) {
uv_dlerror(&lib);
lwsl_err("%s: Failed to get '%s' on %s: %s\n",
__func__, path, libpath, lib.errmsg);
goto bail;
}
hdr = (const lws_plugin_header_t *)v;
if (hdr->api_magic != LWS_PLUGIN_API_MAGIC) {
lwsl_info("%s: plugin %s has outdated api %d (vs %d)\n",
__func__, libpath, hdr->api_magic,
LWS_PLUGIN_API_MAGIC);
goto bail;
}
if (strcmp(hdr->lws_build_hash, LWS_BUILD_HASH))
goto bail;
if (strcmp(hdr->_class, _class))
goto bail;
/*
* We don't already have one of these, right?
*/
pin = *pplugin;
while (pin) {
if (!strcmp(pin->hdr->name, hdr->name))
goto bail;
pin = pin->list;
}
/*
* OK let's bring it in
*/
pin = lws_malloc(sizeof(*pin), __func__);
if (!pin)
goto bail;
pin->list = *pplugin;
*pplugin = pin;
pin->u.lib = lib;
pin->hdr = hdr;
if (each)
each(pin, each_user);
return hdr;
bail:
uv_dlclose(&lib);
return NULL;
}
int
lws_plat_destroy_dl(struct lws_plugin *p)
{
uv_dlclose(&p->u.lib);
return 0;
}
#endif
/*
* Specifically for protocol plugins support
*/
#if defined(LWS_WITH_PLUGINS) && (UV_VERSION_MAJOR > 0)
static int
protocol_plugin_cb(struct lws_plugin *pin, void *each_user)
{
struct lws_context *context = (struct lws_context *)each_user;
const lws_plugin_protocol_t *plpr =
(const lws_plugin_protocol_t *)pin->hdr;
context->plugin_protocol_count += plpr->count_protocols;
context->plugin_extension_count += plpr->count_extensions;
return 0;
}
#endif
int
lws_plat_plugins_init(struct lws_context *context, const char * const *d)
{
#if defined(LWS_WITH_PLUGINS) && (UV_VERSION_MAJOR > 0)
if (info->plugin_dirs) {
uv_loop_init(&context->uv.loop);
lws_plugins_init(&context->plugin_list, info->plugin_dirs,
"lws_protocol_plugin", NULL,
protocol_plugin_cb, context);
}
#endif
return 0;
}
int
lws_plat_plugins_destroy(struct lws_context * context)
{
#if defined(LWS_WITH_PLUGINS) && (UV_VERSION_MAJOR > 0)
if (lws_check_opt(context->options, LWS_SERVER_OPTION_LIBUV) &&
context->plugin_list) {
lws_plugins_destroy(&context->plugin_list, NULL, NULL);
while (uv_loop_close(&context->uv.loop))
;
}
#endif
return 0;
}
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