changeset in /hg/icedtea6: Commit changes to the new np plugin. ...
Deepak Bhole
dbhole at redhat.com
Fri Jul 10 15:57:41 PDT 2009
changeset dd1ce0a6da73 in /hg/icedtea6
details: http://icedtea.classpath.org/hg/icedtea6?cmd=changeset;node=dd1ce0a6da73
description:
Commit changes to the new np plugin. These changes do a lot of things to list.
But most notably, they:
- Lay down the scriptability framework.
- Implement the new MessageBus architecture that is independent of how messages
are passed.
- Implement GetWindow and GetMember (partially) as proof of concept for
message passing, threading, unicode translation, etc.
ChangeLog:
* Makefile.am: Update makefile to pick up plugin C++ files from new
location.
* plugin/icedtea/sun/applet/PluginMessageConsumer.java : Minor typo fix.
* plugin/icedteanp/IcedTeaJavaRequestProcessor.cc: New file. Processes
requests from JS/C++ side to JavaSide.
* plugin/icedteanp/IcedTeaJavaRequestProcessor.h: New file. Header for
IcedTeaJavaRequestProcessor.cc.
* plugin/icedteanp/IcedTeaNPPlugin.cc: Modified to work with the new
MessageBus archtecture for the new plugin. Also, moved from top level
directory.
* plugin/icedteanp/IcedTeaNPPlugin.h: New file. Header for
IcedTeaNPPlugin.cc.
* plugin/icedteanp/IcedTeaPluginRequestProcessor.cc: New file. Processes
plugin data requests from Java side.
* plugin/icedteanp/IcedTeaPluginRequestProcessor.h: new file. Header for
IcedTeaPluginRequestProcessor.cc.
* plugin/icedteanp/IcedTeaPluginUtils.cc: New file. Utility functions for
the rest of the plugin code.
* plugin/icedteanp/IcedTeaPluginUtils.h: New file. Header for
IcedTeaPluginUtils.cc.
* plugin/icedteanp/IcedTeaScriptablePluginObject.cc: New file. Scriptable
object that extends NPObject and implements hooks from NPClass.
* plugin/icedteanp/IcedTeaScriptablePluginObject.h: New file. Header for
IcedTeaScriptablePluginObject.h
* plugin/icedtea/sun/applet/PluginMessageConsumer.java: Sync with current
plugin.
* plugin/icedteanp/sun/applet/PluginAppletSecurityContext.java: Same.
* plugin/icedteanp/sun/applet/PluginAppletViewer.java: Same.
* plugin/icedteanp/sun/applet/PluginCallRequestFactory.java: Same.
* plugin/icedteanp/sun/applet/PluginCookieInfoRequest.java: Same
* plugin/icedteanp/sun/applet/PluginCookieStore.java: Same.
* plugin/icedteanp/sun/applet/PluginMain.java: Same.
* plugin/icedteanp/sun/applet/PluginMessageConsumer.java: Same.
* rt/net/sourceforge/jnlp/tools/JarSigner.java: Use JarFile instead of
JarInputstream when verifying jars.
diffstat:
22 files changed, 4471 insertions(+), 2087 deletions(-)
ChangeLog | 38
IcedTeaNPPlugin.cc | 2006 ---------
Makefile.am | 26
plugin/icedtea/sun/applet/PluginMessageConsumer.java | 2
plugin/icedteanp/IcedTeaJavaRequestProcessor.cc | 195
plugin/icedteanp/IcedTeaJavaRequestProcessor.h | 107
plugin/icedteanp/IcedTeaNPPlugin.cc | 2071 ++++++++++
plugin/icedteanp/IcedTeaNPPlugin.h | 90
plugin/icedteanp/IcedTeaPluginRequestProcessor.cc | 420 ++
plugin/icedteanp/IcedTeaPluginRequestProcessor.h | 108
plugin/icedteanp/IcedTeaPluginUtils.cc | 583 ++
plugin/icedteanp/IcedTeaPluginUtils.h | 244 +
plugin/icedteanp/IcedTeaScriptablePluginObject.cc | 113
plugin/icedteanp/IcedTeaScriptablePluginObject.h | 87
plugin/icedteanp/sun/applet/PluginAppletSecurityContext.java | 2
plugin/icedteanp/sun/applet/PluginAppletViewer.java | 238 -
plugin/icedteanp/sun/applet/PluginCallRequestFactory.java | 2
plugin/icedteanp/sun/applet/PluginCookieInfoRequest.java | 122
plugin/icedteanp/sun/applet/PluginCookieStore.java | 73
plugin/icedteanp/sun/applet/PluginMain.java | 6
plugin/icedteanp/sun/applet/PluginMessageConsumer.java | 2
rt/net/sourceforge/jnlp/tools/JarSigner.java | 23
diffs (truncated from 6899 to 500 lines):
diff -r 1c9399ade69e -r dd1ce0a6da73 ChangeLog
--- a/ChangeLog Fri Jul 10 13:12:21 2009 -0400
+++ b/ChangeLog Fri Jul 10 19:02:10 2009 -0400
@@ -1,3 +1,41 @@ 2009-07-10 Lillian Angel <langel at redha
+2009-07-10 Deepak Bhole <dbhole at redhat.com>
+
+ * Makefile.am: Update makefile to pick up plugin C++ files from new
+ location.
+ * plugin/icedtea/sun/applet/PluginMessageConsumer.java : Minor typo fix.
+ * plugin/icedteanp/IcedTeaJavaRequestProcessor.cc: New file. Processes
+ requests from JS/C++ side to JavaSide.
+ * plugin/icedteanp/IcedTeaJavaRequestProcessor.h: New file. Header for
+ IcedTeaJavaRequestProcessor.cc.
+ * plugin/icedteanp/IcedTeaNPPlugin.cc: Modified to work with the new
+ MessageBus archtecture for the new plugin. Also, moved from top level
+ directory.
+ * plugin/icedteanp/IcedTeaNPPlugin.h: New file. Header for
+ IcedTeaNPPlugin.cc.
+ * plugin/icedteanp/IcedTeaPluginRequestProcessor.cc: New file. Processes
+ plugin data requests from Java side.
+ * plugin/icedteanp/IcedTeaPluginRequestProcessor.h: new file. Header for
+ IcedTeaPluginRequestProcessor.cc.
+ * plugin/icedteanp/IcedTeaPluginUtils.cc: New file. Utility functions for
+ the rest of the plugin code.
+ * plugin/icedteanp/IcedTeaPluginUtils.h: New file. Header for
+ IcedTeaPluginUtils.cc.
+ * plugin/icedteanp/IcedTeaScriptablePluginObject.cc: New file. Scriptable
+ object that extends NPObject and implements hooks from NPClass.
+ * plugin/icedteanp/IcedTeaScriptablePluginObject.h: New file. Header for
+ IcedTeaScriptablePluginObject.h
+ * plugin/icedtea/sun/applet/PluginMessageConsumer.java: Sync with current
+ plugin.
+ * plugin/icedteanp/sun/applet/PluginAppletSecurityContext.java: Same.
+ * plugin/icedteanp/sun/applet/PluginAppletViewer.java: Same.
+ * plugin/icedteanp/sun/applet/PluginCallRequestFactory.java: Same.
+ * plugin/icedteanp/sun/applet/PluginCookieInfoRequest.java: Same
+ * plugin/icedteanp/sun/applet/PluginCookieStore.java: Same.
+ * plugin/icedteanp/sun/applet/PluginMain.java: Same.
+ * plugin/icedteanp/sun/applet/PluginMessageConsumer.java: Same.
+ * rt/net/sourceforge/jnlp/tools/JarSigner.java: Use JarFile instead of
+ JarInputstream when verifying jars.
+
2009-07-10 Lillian Angel <langel at redhat.com>
* patches/icedtea-graphics.patch: Updated patch to fix Sun bugs 6491856 and
diff -r 1c9399ade69e -r dd1ce0a6da73 IcedTeaNPPlugin.cc
--- a/IcedTeaNPPlugin.cc Fri Jul 10 13:12:21 2009 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,2006 +0,0 @@
-/* gcjwebplugin.cc -- web browser plugin to execute Java applets
- Copyright (C) 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-// System includes.
-#include <dlfcn.h>
-#include <errno.h>
-#include <libgen.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-// Netscape plugin API includes.
-#include <npapi.h>
-#include <npupp.h>
-
-// GLib includes.
-#include <glib.h>
-#include <glib/gstdio.h>
-
-// GTK includes.
-#include <gtk/gtk.h>
-
-// Documentbase retrieval includes.
-#include <nsIPluginInstance.h>
-#include <nsIPluginInstancePeer.h>
-#include <nsIPluginTagInfo2.h>
-
-// API's into Mozilla
-#include <nsCOMPtr.h>
-#include <nsICookieService.h>
-#include <nsIDNSRecord.h>
-#include <nsIDNSService.h>
-#include <nsINetUtil.h>
-#include <nsIProxyInfo.h>
-#include <nsIProtocolProxyService.h>
-#include <nsIScriptSecurityManager.h>
-#include <nsIIOService.h>
-#include <nsIURI.h>
-#include <nsNetCID.h>
-#include <nsStringAPI.h>
-#include <nsServiceManagerUtils.h>
-
-
-// Debugging macros.
-#define PLUGIN_DEBUG(message) \
- g_print ("GCJ PLUGIN: thread %p: %s\n", g_thread_self (), message)
-
-#define PLUGIN_DEBUG_TWO(first, second) \
- g_print ("GCJ PLUGIN: thread %p: %s %s\n", g_thread_self (), \
- first, second)
-
-// Error reporting macros.
-#define PLUGIN_ERROR(message) \
- g_printerr ("%s:%d: thread %p: Error: %s\n", __FILE__, __LINE__, \
- g_thread_self (), message)
-
-#define PLUGIN_ERROR_TWO(first, second) \
- g_printerr ("%s:%d: thread %p: Error: %s: %s\n", __FILE__, __LINE__, \
- g_thread_self (), first, second)
-
-#define PLUGIN_ERROR_THREE(first, second, third) \
- g_printerr ("%s:%d: thread %p: Error: %s: %s: %s\n", __FILE__, \
- __LINE__, g_thread_self (), first, second, third)
-
-// Plugin information passed to about:plugins.
-#define PLUGIN_NAME "IcedTea NPR Web Browser Plugin (using IcedTea)"
-#define PLUGIN_DESC "The " PLUGIN_NAME PLUGIN_VERSION " executes Java applets."
-#define PLUGIN_MIME_DESC \
- "application/x-java-vm:class,jar:IcedTea;" \
- "application/x-java-applet:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.1:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.1.1:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.1.2:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.1.3:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.2:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.2.1:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.2.2:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.3:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.3.1:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.4:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.4.1:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.4.2:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.5:class,jar:IcedTea;" \
- "application/x-java-applet;version=1.6:class,jar:IcedTea;" \
- "application/x-java-applet;jpi-version=1.6.0_00:class,jar:IcedTea;" \
- "application/x-java-bean:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.1:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.1.1:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.1.2:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.1.3:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.2:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.2.1:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.2.2:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.3:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.3.1:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.4:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.4.1:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.4.2:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.5:class,jar:IcedTea;" \
- "application/x-java-bean;version=1.6:class,jar:IcedTea;" \
- "application/x-java-bean;jpi-version=1.6.0_00:class,jar:IcedTea;"
-#define PLUGIN_URL NS_INLINE_PLUGIN_CONTRACTID_PREFIX NS_JVM_MIME_TYPE
-#define PLUGIN_MIME_TYPE "application/x-java-vm"
-#define PLUGIN_FILE_EXTS "class,jar,zip"
-#define PLUGIN_MIME_COUNT 1
-
-#define FAILURE_MESSAGE "gcjwebplugin error: Failed to run %s." \
- " For more detail rerun \"firefox -g\" in a terminal window."
-
-static int plugin_debug = 1;
-
-#define PLUGIN_DEBUG_0ARG(str) \
- do \
- { \
- if (plugin_debug) \
- { \
- fprintf(stderr, "GCJ PLUGIN: thread %p: ", g_thread_self ()); \
- fprintf(stderr, str); \
- } \
- } while (0)
-
-#define PLUGIN_DEBUG_1ARG(str, arg1) \
- do \
- { \
- if (plugin_debug) \
- { \
- fprintf(stderr, "GCJ PLUGIN: thread %p: ", g_thread_self ()); \
- fprintf(stderr, str, arg1); \
- } \
- } while (0)
-
-#define PLUGIN_DEBUG_2ARG(str, arg1, arg2) \
- do \
- { \
- if (plugin_debug) \
- { \
- fprintf(stderr, "GCJ PLUGIN: thread %p: ", g_thread_self ()); \
- fprintf(stderr, str, arg1, arg2); \
- } \
- } while (0)
-
-#define PLUGIN_DEBUG_3ARG(str, arg1, arg2, arg3) \
- do \
- { \
- if (plugin_debug) \
- { \
- fprintf(stderr, "GCJ PLUGIN: thread %p: ", g_thread_self ()); \
- fprintf(stderr, str, arg1, arg2, arg3); \
- } \
- } while (0)
-
-#define PLUGIN_DEBUG_4ARG(str, arg1, arg2, arg3, arg4) \
- do \
- { \
- if (plugin_debug) \
- { \
- fprintf(stderr, "GCJ PLUGIN: thread %p: ", g_thread_self ()); \
- fprintf(stderr, str, arg1, arg2, arg3, arg4); \
- } \
- } while (0)
-
-// Documentbase retrieval required definition.
-static NS_DEFINE_IID (kIPluginTagInfo2IID, NS_IPLUGINTAGINFO2_IID);
-
-// Browser function table.
-static NPNetscapeFuncs browserFunctions;
-
-// Data directory for plugin.
-static gchar* data_directory = NULL;
-
-// Fully-qualified appletviewer executable.
-static gchar* appletviewer_executable = NULL;
-
-// Applet viewer input channel (needs to be static because it is used in plugin_in_pipe_callback)
-static GIOChannel* in_from_appletviewer = NULL;
-
-// Applet viewer input pipe name.
-gchar* in_pipe_name;
-
-// Applet viewer input watch source.
-gint in_watch_source;
-
-// Applet viewer output pipe name.
-gchar* out_pipe_name;
-
-// Applet viewer output watch source.
-gint out_watch_source;
-
-// Applet viewer output channel.
-GIOChannel* out_to_appletviewer;
-
-// Tracks jvm status
-gboolean jvm_up = FALSE;
-
-// Keeps track of initialization. NP_Initialize should only be
-// called once.
-gboolean initialized = false;
-
-GQuark ITNP_PLUGIN_ERROR = g_quark_from_string("IcedTeaNPPlugin");
-
-// GCJPluginData stores all the data associated with a single plugin
-// instance. A separate plugin instance is created for each <APPLET>
-// tag. For now, each plugin instance spawns its own applet viewer
-// process but this may need to change if we find pages containing
-// multiple applets that expect to be running in the same VM.
-struct GCJPluginData
-{
- // A unique identifier for this plugin window.
- gchar* instance_string;
- // Mutex to protect appletviewer_alive.
- GMutex* appletviewer_mutex;
- // Back-pointer to the plugin instance to which this data belongs.
- // This should not be freed but instead simply set to NULL.
- NPP owner;
- // The address of the plugin window. This should not be freed but
- // instead simply set to NULL.
- gpointer window_handle;
- // The last plugin window width sent to us by the browser.
- guint32 window_width;
- // The last plugin window height sent to us by the browser.
- guint32 window_height;
-};
-
-// Documentbase retrieval type-punning union.
-typedef union
-{
- void** void_field;
- nsIPluginTagInfo2** info_field;
-} info_union;
-
-// Static instance helper functions.
-// Have the browser allocate a new GCJPluginData structure.
-static void plugin_data_new (GCJPluginData** data);
-// Retrieve the current document's documentbase.
-static gchar* plugin_get_documentbase (NPP instance);
-// Notify the user that the appletviewer is not installed correctly.
-static void plugin_display_failure_dialog ();
-// Callback used to monitor input pipe status.
-static gboolean plugin_in_pipe_callback (GIOChannel* source,
- GIOCondition condition,
- gpointer plugin_data);
-// Callback used to monitor output pipe status.
-static gboolean plugin_out_pipe_callback (GIOChannel* source,
- GIOCondition condition,
- gpointer plugin_data);
-static NPError plugin_start_appletviewer (GCJPluginData* data);
-static gchar* plugin_create_applet_tag (int16 argc, char* argn[],
- char* argv[]);
-static void plugin_send_message_to_appletviewer (gchar const* message);
-static void plugin_stop_appletviewer ();
-// Uninitialize GCJPluginData structure
-static void plugin_data_destroy (NPP instance);
-
-NS_IMETHODIMP get_cookie_info(const char* siteAddr, char** cookieString);
-void get_proxy_info(const char* siteAddr, char** proxy_scheme, char** proxy_host, char** proxy_port, GError *error);
-void decode_url(const gchar* url, gchar** decoded_url);
-void consume_message(gchar* message);
-void start_jvm_if_needed();
-static void appletviewer_monitor(GPid pid, gint status, gpointer data);
-
-// Global instance counter.
-// Mutex to protect plugin_instance_counter.
-static GMutex* plugin_instance_mutex = NULL;
-// A global variable for reporting GLib errors. This must be free'd
-// and set to NULL after each use.
-static GError* channel_error = NULL;
-
-static GHashTable* instance_to_id_map = g_hash_table_new(NULL, NULL);
-static GHashTable* id_to_instance_map = g_hash_table_new(NULL, NULL);
-static gint instance_counter = 1;
-static GPid appletviewer_pid = -1;
-static guint appletviewer_watch_id = -1;
-
-// Functions prefixed by GCJ_ are instance functions. They are called
-// by the browser and operate on instances of GCJPluginData.
-// Functions prefixed by plugin_ are static helper functions.
-// Functions prefixed by NP_ are factory functions. They are called
-// by the browser and provide functionality needed to create plugin
-// instances.
-
-// INSTANCE FUNCTIONS
-
-// Creates a new gcjwebplugin instance. This function creates a
-// GCJPluginData* and stores it in instance->pdata. The following
-// GCJPluginData fiels are initialized: instance_string, in_pipe_name,
-// in_from_appletviewer, in_watch_source, out_pipe_name,
-// out_to_appletviewer, out_watch_source, appletviewer_mutex, owner,
-// appletviewer_alive. In addition two pipe files are created. All
-// of those fields must be properly destroyed, and the pipes deleted,
-// by GCJ_Destroy. If an error occurs during initialization then this
-// function will free anything that's been allocated so far, set
-// instance->pdata to NULL and return an error code.
-NPError
-GCJ_New (NPMIMEType pluginType, NPP instance, uint16 mode,
- int16 argc, char* argn[], char* argv[],
- NPSavedData* saved)
-{
- PLUGIN_DEBUG ("GCJ_New");
-
- NPError np_error = NPERR_NO_ERROR;
- GCJPluginData* data = NULL;
-
- gchar* documentbase = NULL;
- gchar* read_message = NULL;
- gchar* applet_tag = NULL;
- gchar* tag_message = NULL;
- gchar* cookie_info = NULL;
-
- if (!instance)
- {
- PLUGIN_ERROR ("Browser-provided instance pointer is NULL.");
- np_error = NPERR_INVALID_INSTANCE_ERROR;
- goto cleanup_done;
- }
-
- // data
- plugin_data_new (&data);
- if (data == NULL)
- {
- PLUGIN_ERROR ("Failed to allocate plugin data.");
- np_error = NPERR_OUT_OF_MEMORY_ERROR;
- goto cleanup_done;
- }
-
- // start the jvm if needed
- start_jvm_if_needed();
-
- // Initialize data->instance_string.
- //
- // instance_string should be unique for this process so we use a
- // combination of getpid and plugin_instance_counter.
- //
- // Critical region. Reference and increment plugin_instance_counter
- // global.
- g_mutex_lock (plugin_instance_mutex);
-
- // data->instance_string
- data->instance_string = g_strdup_printf ("%d",
- instance_counter);
-
- g_mutex_unlock (plugin_instance_mutex);
-
- // data->appletviewer_mutex
- data->appletviewer_mutex = g_mutex_new ();
-
- g_mutex_lock (data->appletviewer_mutex);
-
- // Documentbase retrieval.
- documentbase = plugin_get_documentbase (instance);
- if (!documentbase)
- {
- PLUGIN_ERROR ("Documentbase retrieval failed."
- " Browser not Mozilla-based?");
- goto cleanup_appletviewer_mutex;
- }
-
- // Send applet tag message to appletviewer.
- applet_tag = plugin_create_applet_tag (argc, argn, argv);
-
- tag_message = (gchar*) malloc(strlen(applet_tag)*sizeof(gchar) + 1024);
- g_sprintf(tag_message, "instance %d tag %s %s", instance_counter, documentbase, applet_tag);
-
- //plugin_send_message_to_appletviewer (data, data->instance_string);
- plugin_send_message_to_appletviewer (tag_message);
-
- //send cookie information
- char* cookie_string;
- if (get_cookie_info(documentbase, &cookie_string) == NS_OK)
- {
- cookie_info = (gchar*) malloc(sizeof(cookie_string) + 1024);
- g_sprintf(cookie_info, "instance %d cookie %s", instance_counter, cookie_string);
- }
- else
- {
- cookie_info = (gchar*) malloc(1024);
- g_sprintf(cookie_info, "instance %d cookie", instance_counter);
- }
-
- plugin_send_message_to_appletviewer (cookie_info);
-
- g_mutex_unlock (data->appletviewer_mutex);
-
- // If initialization succeeded entirely then we store the plugin
- // data in the instance structure and return. Otherwise we free the
- // data we've allocated so far and set instance->pdata to NULL.
-
- // Set back-pointer to owner instance.
- data->owner = instance;
- instance->pdata = data;
- goto cleanup_done;
-
- cleanup_appletviewer_mutex:
- g_free (data->appletviewer_mutex);
- data->appletviewer_mutex = NULL;
-
- // cleanup_instance_string:
- g_free (data->instance_string);
- data->instance_string = NULL;
-
- // cleanup_data:
- // Eliminate back-pointer to plugin instance.
- data->owner = NULL;
- (*browserFunctions.memfree) (data);
- data = NULL;
-
- // Initialization failed so return a NULL pointer for the browser
- // data.
- instance->pdata = NULL;
-
- cleanup_done:
- g_free (tag_message);
- tag_message = NULL;
- g_free (applet_tag);
- applet_tag = NULL;
- g_free (read_message);
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