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