Add JavaScript API binding with NPAPI Plugin

2026-05-11 19:06:27 +08:00 · 2019-02-28 17:50:01 +08:00
parent 5b90476864
commit 7e1857d9e9
10 changed files with 2259 additions and 0 deletions
--- a/npapi/PluginObject.c
+++ b/npapi/PluginObject.c
@@ -0,0 +1,175 @@
+/* ====================================================================
+ * Copyright (c) 2016 - 2019 The GmSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the GmSSL Project.
+ *    (http://gmssl.org/)"
+ *
+ * 4. The name "GmSSL Project" must not be used to endorse or promote
+ *    products derived from this software without prior written
+ *    permission. For written permission, please contact
+ *    guanzhi1980@gmail.com.
+ *
+ * 5. Products derived from this software may not be called "GmSSL"
+ *    nor may "GmSSL" appear in their names without prior written
+ *    permission of the GmSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the GmSSL Project
+ *    (http://gmssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE GmSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE GmSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "PluginObject.h"
+
+static bool identifiersInitialized = false;
+
+#define PLUGIN_PROPERTY_GMSSL			0
+#define PLUGIN_NUM_PROPERTIES			1
+
+static NPIdentifier pluginPropertyIdentifiers[PLUGIN_NUM_PROPERTIES];
+static const NPUTF8 *pluginPropertyNames[PLUGIN_NUM_PROPERTIES] = {
+	"gmssl",
+};
+
+#define PLUGIN_METHOD_GETTOKEN			0
+#define PLUGIN_NUM_METHODS			1
+
+static NPIdentifier pluginMethodIdentifiers[PLUGIN_NUM_METHODS];
+static const NPUTF8 *pluginMethodNames[PLUGIN_NUM_METHODS] = {
+	"getToken"
+};
+
+static void initializeIdentifiers(void)
+{
+	browser->getstringidentifiers(pluginPropertyNames,
+		PLUGIN_NUM_PROPERTIES, pluginPropertyIdentifiers);
+	browser->getstringidentifiers(pluginMethodNames,
+		PLUGIN_NUM_METHODS, pluginMethodIdentifiers);
+}
+
+bool pluginHasProperty(NPObject *obj, NPIdentifier name)
+{
+	int i;
+	//fprintf(stderr, "pluginHasProperty(%s)\n", browser->utf8fromidentifier(name));
+	for (i = 0; i < PLUGIN_NUM_PROPERTIES; i++)
+		if (name == pluginPropertyIdentifiers[i])
+			return true;
+	return false;
+}
+
+bool pluginHasMethod(NPObject *obj, NPIdentifier name)
+{
+	int i;
+	//fprintf(stderr, "pluginHasMethod(%s)\n", browser->utf8fromidentifier(name));
+	for (i = 0; i < PLUGIN_NUM_METHODS; i++)
+		if (name == pluginMethodIdentifiers[i])
+			return true;
+	return false;
+}
+
+bool pluginGetProperty(NPObject *obj, NPIdentifier name, NPVariant *variant)
+{
+	PluginObject *plugin = (PluginObject *)obj;
+	//fprintf(stderr, "pluginGetProperty(%s)\n", browser->utf8fromidentifier(name));
+
+	if (name == pluginPropertyIdentifiers[PLUGIN_PROPERTY_GMSSL]) {
+		//fprintf(stderr, "webvision: get GmSSLObject\n");
+		NPObject *resultObj = &plugin->gmsslObject->header;
+		browser->retainobject(resultObj);
+		OBJECT_TO_NPVARIANT(resultObj, *variant);
+		return true;
+	}
+
+	return false;
+}
+
+bool pluginSetProperty(NPObject *obj, NPIdentifier name, const NPVariant *variant)
+{
+	return false;
+}
+
+bool pluginInvoke(NPObject *obj, NPIdentifier name, const NPVariant *args, uint32_t argCount, NPVariant *result)
+{
+	return false;
+}
+
+bool pluginInvokeDefault(NPObject *obj, const NPVariant *args, uint32_t argCount, NPVariant *result)
+{
+	return false;
+}
+
+void pluginInvalidate(NPObject *obj)
+{
+	// Release any remaining references to JavaScript objects.
+}
+
+NPObject *pluginAllocate(NPP npp, NPClass *theClass)
+{
+	PluginObject *newInstance = malloc(sizeof(PluginObject));
+
+	//fprintf(stderr, "pluginAllocate()\n");
+
+	if (!identifiersInitialized) {
+		identifiersInitialized = true;
+		initializeIdentifiers();
+	}
+	newInstance->gmsslObject =
+		(GmSSLObject *)browser->createobject(npp, getGmSSLClass());
+	newInstance->npp = npp;
+
+	return &newInstance->header;
+}
+
+void pluginDeallocate(NPObject *obj)
+{
+	free(obj);
+}
+
+static NPClass pluginClass = {
+	NP_CLASS_STRUCT_VERSION,
+	pluginAllocate,
+	pluginDeallocate,
+	pluginInvalidate,
+	pluginHasMethod,
+	pluginInvoke,
+	pluginInvokeDefault,
+	pluginHasProperty,
+	pluginGetProperty,
+	pluginSetProperty,
+};
+
+NPClass *getPluginClass(void)
+{
+	return &pluginClass;
+}