npunix.c
上传用户:hongyu5696
上传日期:2018-01-22
资源大小:391k
文件大小:11k
- /*
- * 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, "%sn", 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);
- }
- JRIEnv *NPN_GetJavaEnv()
- {
- return CallNPN_GetJavaEnvProc(gNetscapeFuncs.getJavaEnv);
- }
- jref NPN_GetJavaPeer(NPP instance)
- {
- return CallNPN_GetJavaPeerProc(gNetscapeFuncs.getJavaPeer, instance);
- }
- /***********************************************************************
- *
- * 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);
- }
- JRIGlobalRef Private_GetJavaClass(void)
- {
- jref clazz = NPP_GetJavaClass();
- if (clazz) {
- JRIEnv *env = NPN_GetJavaEnv();
- return JRI_NewGlobalRef(env, clazz);
- }
- return NULL;
- }
- /***********************************************************************
- *
- * 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 = Private_GetJavaClass();
- 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;
- }