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+/*
+ * npunix.c
+ *
+ * Netscape Client Plugin API
+ * - Wrapper function to interface with the Netscape Navigator
+ *
+ * dp Suresh <dp@netscape.com>
+ *
+ *----------------------------------------------------------------------
+ * PLUGIN DEVELOPERS:
+ *	YOU WILL NOT NEED TO EDIT THIS FILE.
+ *----------------------------------------------------------------------
+ */
+
+#define XP_UNIX 1
+
+#include <stdio.h>
+#include "npapi.h"
+#include "npupp.h"
+
+/*
+ * Define PLUGIN_TRACE to have the wrapper functions print
+ * messages to stderr whenever they are called.
+ */
+
+#ifdef PLUGIN_TRACE
+#include <stdio.h>
+#define PLUGINDEBUGSTR(msg)	fprintf(stderr, "%s\n", msg)
+#else
+#define PLUGINDEBUGSTR(msg)
+#endif
+
+
+/***********************************************************************
+ *
+ * Globals
+ *
+ ***********************************************************************/
+
+static NPNetscapeFuncs   gNetscapeFuncs;	/* Netscape Function table */
+
+
+/***********************************************************************
+ *
+ * Wrapper functions : plugin calling Netscape Navigator
+ *
+ * These functions let the plugin developer just call the APIs
+ * as documented and defined in npapi.h, without needing to know
+ * about the function table and call macros in npupp.h.
+ *
+ ***********************************************************************/
+
+void
+NPN_Version(int* plugin_major, int* plugin_minor,
+	     int* netscape_major, int* netscape_minor)
+{
+	*plugin_major = NP_VERSION_MAJOR;
+	*plugin_minor = NP_VERSION_MINOR;
+
+	/* Major version is in high byte */
+	*netscape_major = gNetscapeFuncs.version >> 8;
+	/* Minor version is in low byte */
+	*netscape_minor = gNetscapeFuncs.version & 0xFF;
+}
+
+NPError
+NPN_GetValue(NPP instance, NPNVariable variable, void *r_value)
+{
+	return CallNPN_GetValueProc(gNetscapeFuncs.getvalue,
+					instance, variable, r_value);
+}
+
+NPError
+NPN_GetURL(NPP instance, const char* url, const char* window)
+{
+	return CallNPN_GetURLProc(gNetscapeFuncs.geturl, instance, url, window);
+}
+
+NPError
+NPN_PostURL(NPP instance, const char* url, const char* window,
+	     uint32 len, const char* buf, NPBool file)
+{
+	return CallNPN_PostURLProc(gNetscapeFuncs.posturl, instance,
+					url, window, len, buf, file);
+}
+
+NPError
+NPN_RequestRead(NPStream* stream, NPByteRange* rangeList)
+{
+	return CallNPN_RequestReadProc(gNetscapeFuncs.requestread,
+					stream, rangeList);
+}
+
+NPError
+NPN_NewStream(NPP instance, NPMIMEType type, const char *window,
+	      NPStream** stream_ptr)
+{
+	return CallNPN_NewStreamProc(gNetscapeFuncs.newstream, instance,
+					type, window, stream_ptr);
+}
+
+int32
+NPN_Write(NPP instance, NPStream* stream, int32 len, void* buffer)
+{
+	return CallNPN_WriteProc(gNetscapeFuncs.write, instance,
+					stream, len, buffer);
+}
+
+NPError
+NPN_DestroyStream(NPP instance, NPStream* stream, NPError reason)
+{
+	return CallNPN_DestroyStreamProc(gNetscapeFuncs.destroystream,
+						instance, stream, reason);
+}
+
+void
+NPN_Status(NPP instance, const char* message)
+{
+	CallNPN_StatusProc(gNetscapeFuncs.status, instance, message);
+}
+
+const char*
+NPN_UserAgent(NPP instance)
+{
+	return CallNPN_UserAgentProc(gNetscapeFuncs.uagent, instance);
+}
+
+void*
+NPN_MemAlloc(uint32 size)
+{
+	return CallNPN_MemAllocProc(gNetscapeFuncs.memalloc, size);
+}
+
+void NPN_MemFree(void* ptr)
+{
+	CallNPN_MemFreeProc(gNetscapeFuncs.memfree, ptr);
+}
+
+uint32 NPN_MemFlush(uint32 size)
+{
+	return CallNPN_MemFlushProc(gNetscapeFuncs.memflush, size);
+}
+
+void NPN_ReloadPlugins(NPBool reloadPages)
+{
+	CallNPN_ReloadPluginsProc(gNetscapeFuncs.reloadplugins, reloadPages);
+}
+
+
+/***********************************************************************
+ *
+ * Wrapper functions : Netscape Navigator -> plugin
+ *
+ * These functions let the plugin developer just create the APIs
+ * as documented and defined in npapi.h, without needing to 
+ * install those functions in the function table or worry about
+ * setting up globals for 68K plugins.
+ *
+ ***********************************************************************/
+
+NPError
+Private_New(NPMIMEType pluginType, NPP instance, uint16 mode,
+		int16 argc, char* argn[], char* argv[], NPSavedData* saved)
+{
+	NPError ret;
+	PLUGINDEBUGSTR("New");
+	ret = NPP_New(pluginType, instance, mode, argc, argn, argv, saved);
+	return ret;	
+}
+
+NPError
+Private_Destroy(NPP instance, NPSavedData** save)
+{
+	PLUGINDEBUGSTR("Destroy");
+	return NPP_Destroy(instance, save);
+}
+
+NPError
+Private_SetWindow(NPP instance, NPWindow* window)
+{
+	NPError err;
+	PLUGINDEBUGSTR("SetWindow");
+	err = NPP_SetWindow(instance, window);
+	return err;
+}
+
+NPError
+Private_NewStream(NPP instance, NPMIMEType type, NPStream* stream,
+			NPBool seekable, uint16* stype)
+{
+	NPError err;
+	PLUGINDEBUGSTR("NewStream");
+	err = NPP_NewStream(instance, type, stream, seekable, stype);
+	return err;
+}
+
+int32
+Private_WriteReady(NPP instance, NPStream* stream)
+{
+	unsigned int result;
+	PLUGINDEBUGSTR("WriteReady");
+	result = NPP_WriteReady(instance, stream);
+	return result;
+}
+
+int32
+Private_Write(NPP instance, NPStream* stream, int32 offset, int32 len,
+		void* buffer)
+{
+	unsigned int result;
+	PLUGINDEBUGSTR("Write");
+	result = NPP_Write(instance, stream, offset, len, buffer);
+	return result;
+}
+
+void
+Private_StreamAsFile(NPP instance, NPStream* stream, const char* fname)
+{
+	PLUGINDEBUGSTR("StreamAsFile");
+	NPP_StreamAsFile(instance, stream, fname);
+}
+
+
+NPError
+Private_DestroyStream(NPP instance, NPStream* stream, NPError reason)
+{
+	NPError err;
+	PLUGINDEBUGSTR("DestroyStream");
+	err = NPP_DestroyStream(instance, stream, reason);
+	return err;
+}
+
+
+void
+Private_Print(NPP instance, NPPrint* platformPrint)
+{
+	PLUGINDEBUGSTR("Print");
+	NPP_Print(instance, platformPrint);
+}
+
+/*********************************************************************** 
+ *
+ * These functions are located automagically by netscape.
+ *
+ ***********************************************************************/
+
+/*
+ * NP_GetMIMEDescription
+ *	- Netscape needs to know about this symbol
+ *	- Netscape uses the return value to identify when an object instance
+ *	  of this plugin should be created.
+ */
+char *
+NP_GetMIMEDescription(void)
+{
+	return NPP_GetMIMEDescription();
+}
+
+/*
+ * NP_GetValue [optional]
+ *	- Netscape needs to know about this symbol.
+ *	- Interfaces with plugin to get values for predefined variables
+ *	  that the navigator needs.
+ */
+NPError
+NP_GetValue(void *future, NPPVariable variable, void *value)
+{
+	return NPP_GetValue(future, variable, value);
+}
+
+/*
+ * NP_Initialize
+ *	- Netscape needs to know about this symbol.
+ *	- It calls this function after looking up its symbol before it
+ *	  is about to create the first ever object of this kind.
+ *
+ * PARAMETERS
+ *    nsTable	- The netscape function table. If developers just use these
+ *		  wrappers, they dont need to worry about all these function
+ *		  tables.
+ * RETURN
+ *    pluginFuncs
+ *		- This functions needs to fill the plugin function table
+ *		  pluginFuncs and return it. Netscape Navigator plugin
+ *		  library will use this function table to call the plugin.
+ *
+ */
+NPError
+NP_Initialize(NPNetscapeFuncs* nsTable, NPPluginFuncs* pluginFuncs)
+{
+	NPError err = NPERR_NO_ERROR;
+
+	PLUGINDEBUGSTR("NP_Initialize");
+	
+	/* validate input parameters */
+
+	if ((nsTable == NULL) || (pluginFuncs == NULL))
+		err = NPERR_INVALID_FUNCTABLE_ERROR;
+	
+	/*
+	 * Check the major version passed in Netscape's function table.
+	 * We won't load if the major version is newer than what we expect.
+	 * Also check that the function tables passed in are big enough for
+	 * all the functions we need (they could be bigger, if Netscape added
+	 * new APIs, but that's OK with us -- we'll just ignore them).
+	 *
+	 */
+
+	if (err == NPERR_NO_ERROR) {
+		if ((nsTable->version >> 8) > NP_VERSION_MAJOR)
+			err = NPERR_INCOMPATIBLE_VERSION_ERROR;
+		if (nsTable->size < sizeof(NPNetscapeFuncs))
+			err = NPERR_INVALID_FUNCTABLE_ERROR;
+		if (pluginFuncs->size < sizeof(NPPluginFuncs))		
+			err = NPERR_INVALID_FUNCTABLE_ERROR;
+	}
+		
+	
+	if (err == NPERR_NO_ERROR) {
+		/*
+		 * Copy all the fields of Netscape function table into our
+		 * copy so we can call back into Netscape later.  Note that
+		 * we need to copy the fields one by one, rather than assigning
+		 * the whole structure, because the Netscape function table
+		 * could actually be bigger than what we expect.
+		 */
+		gNetscapeFuncs.version       = nsTable->version;
+		gNetscapeFuncs.size          = nsTable->size;
+		gNetscapeFuncs.posturl       = nsTable->posturl;
+		gNetscapeFuncs.geturl        = nsTable->geturl;
+		gNetscapeFuncs.requestread   = nsTable->requestread;
+		gNetscapeFuncs.newstream     = nsTable->newstream;
+		gNetscapeFuncs.write         = nsTable->write;
+		gNetscapeFuncs.destroystream = nsTable->destroystream;
+		gNetscapeFuncs.status        = nsTable->status;
+		gNetscapeFuncs.uagent        = nsTable->uagent;
+		gNetscapeFuncs.memalloc      = nsTable->memalloc;
+		gNetscapeFuncs.memfree       = nsTable->memfree;
+		gNetscapeFuncs.memflush      = nsTable->memflush;
+		gNetscapeFuncs.reloadplugins = nsTable->reloadplugins;
+		gNetscapeFuncs.getJavaEnv    = nsTable->getJavaEnv;
+		gNetscapeFuncs.getJavaPeer   = nsTable->getJavaPeer;
+		gNetscapeFuncs.getvalue      = nsTable->getvalue;
+
+		/*
+		 * Set up the plugin function table that Netscape will use to
+		 * call us.  Netscape needs to know about our version and size
+		 * and have a UniversalProcPointer for every function we
+		 * implement.
+		 */
+		pluginFuncs->version    = (NP_VERSION_MAJOR << 8) + NP_VERSION_MINOR;
+		pluginFuncs->size       = sizeof(NPPluginFuncs);
+		pluginFuncs->newp       = NewNPP_NewProc(Private_New);
+		pluginFuncs->destroy    = NewNPP_DestroyProc(Private_Destroy);
+		pluginFuncs->setwindow  = NewNPP_SetWindowProc(Private_SetWindow);
+		pluginFuncs->newstream  = NewNPP_NewStreamProc(Private_NewStream);
+		pluginFuncs->destroystream = NewNPP_DestroyStreamProc(Private_DestroyStream);
+		pluginFuncs->asfile     = NewNPP_StreamAsFileProc(Private_StreamAsFile);
+		pluginFuncs->writeready = NewNPP_WriteReadyProc(Private_WriteReady);
+		pluginFuncs->write      = NewNPP_WriteProc(Private_Write);
+		pluginFuncs->print      = NewNPP_PrintProc(Private_Print);
+		pluginFuncs->event      = NULL;
+		pluginFuncs->javaClass	= NULL;
+
+		err = NPP_Initialize();
+	}
+	
+	return err;
+}
+
+/*
+ * NP_Shutdown [optional]
+ *	- Netscape needs to know about this symbol.
+ *	- It calls this function after looking up its symbol after
+ *	  the last object of this kind has been destroyed.
+ *
+ */
+NPError
+NP_Shutdown(void)
+{
+ 	PLUGINDEBUGSTR("NP_Shutdown");
+	NPP_Shutdown();
+	return NPERR_NO_ERROR;
+}

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