219 lines
5.4 KiB
C
219 lines
5.4 KiB
C
/*
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* npw-common.c - Common code for both the wrapper and the plugin
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*
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* nspluginwrapper (C) 2005-2009 Gwenole Beauchesne
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "sysdeps.h"
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#include <glib.h>
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#include "npw-common.h"
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#include "npw-malloc.h"
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#define DEBUG 0
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#include "debug.h"
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/* ====================================================================== */
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/* === Plugin instances === */
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/* ====================================================================== */
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void *
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npw_plugin_instance_new(NPW_PluginInstanceClass *klass)
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{
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NPW_PluginInstance *plugin;
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if (klass && klass->allocate)
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plugin = klass->allocate ();
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else
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plugin = NPW_MemNew0 (NPW_PluginInstance, 1);
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if (plugin)
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{
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plugin->klass = klass;
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plugin->refcount = 1;
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plugin->is_valid = true;
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}
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return plugin;
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}
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void *
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npw_plugin_instance_ref(void *ptr)
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{
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NPW_PluginInstance *plugin = (NPW_PluginInstance *)ptr;
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if (plugin)
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g_atomic_int_inc(&plugin->refcount);
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return plugin;
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}
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void
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npw_plugin_instance_unref(void *ptr)
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{
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NPW_PluginInstance *plugin = (NPW_PluginInstance *)ptr;
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if (plugin == NULL)
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return;
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if (!g_atomic_int_dec_and_test(&plugin->refcount))
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return;
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// XXX: This MUST be called on the main thread, to avoid calling
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// finalize on another thread. For now, this does not happen as
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// NPN_PluginThreadAsyncCall is the only thing callable off the plugin
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// thread. Should this change, we will need to post the destroy task
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// elsewhere or make all finalize hooks thread-safe.
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NPW_PluginInstanceClass *klass = plugin->klass;
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if (klass && klass->finalize)
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klass->finalize (plugin);
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if (klass && klass->deallocate)
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klass->deallocate (plugin);
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else
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NPW_MemFree (plugin);
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}
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void
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npw_plugin_instance_invalidate(void *ptr)
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{
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NPW_PluginInstance *plugin = (NPW_PluginInstance *)ptr;
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if (plugin == NULL)
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return;
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NPW_PluginInstanceClass *klass = plugin->klass;
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if (klass && klass->invalidate)
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klass->invalidate(ptr);
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plugin->is_valid = false;
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}
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/* ====================================================================== */
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/* === NPAPI interface === */
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/* ====================================================================== */
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static NPNetscapeFuncs g_mozilla_funcs;
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static NPPluginFuncs g_plugin_funcs;
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void
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NPW_InitializeFuncs (NPNetscapeFuncs *mozilla_funcs,
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NPPluginFuncs *plugin_funcs)
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{
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memcpy (&g_mozilla_funcs, mozilla_funcs,
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MIN (sizeof (g_mozilla_funcs), mozilla_funcs->size));
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memcpy (&g_plugin_funcs, plugin_funcs,
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MIN (sizeof (g_plugin_funcs), plugin_funcs->size));
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}
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attribute_hidden void *
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NPN_MemAlloc (uint32_t size)
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{
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return g_mozilla_funcs.memalloc(size);
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}
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attribute_hidden void
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NPN_MemFree (void *ptr)
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{
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g_mozilla_funcs.memfree(ptr);
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}
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attribute_hidden uint32_t
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NPN_MemFlush (uint32_t size)
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{
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return g_mozilla_funcs.memflush(size);
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}
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attribute_hidden NPObject *
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NPN_CreateObject (NPP instance, NPClass *aclass)
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{
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return g_mozilla_funcs.createobject(instance, aclass);
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}
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attribute_hidden NPObject *
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NPN_RetainObject (NPObject *npobj)
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{
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return g_mozilla_funcs.retainobject(npobj);
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}
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void attribute_hidden
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NPN_ReleaseObject (NPObject *npobj)
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{
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g_mozilla_funcs.releaseobject(npobj);
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}
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void attribute_hidden
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NPN_ReleaseVariantValue (NPVariant *var)
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{
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g_mozilla_funcs.releasevariantvalue(var);
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}
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NPError
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NPW_ReallocData(void *ptr, uint32_t size, void **out)
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{
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if (ptr == NULL) {
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*out = NULL;
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return NPERR_NO_ERROR;
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}
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*out = NPN_MemAlloc(size);
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if (*out == NULL) {
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return NPERR_OUT_OF_MEMORY_ERROR;
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}
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memcpy(*out, ptr, size);
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return NPERR_NO_ERROR;
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}
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/* ====================================================================== */
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/* === Identifiers === */
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/* ====================================================================== */
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NPW_Identifier
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NPW_CreateIntIdentifier (int32_t value)
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{
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NPW_Identifier id = NPW_MemAlloc0 (sizeof (*id));
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if (id)
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{
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id->type = NPW_IdentifierType_Integer;
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id->value.i = value;
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}
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return id;
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}
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NPW_Identifier
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NPW_CreateStringIdentifier (const char *str)
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{
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char *str_copy;
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NPW_Identifier id;
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str_copy = strdup (str);
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if ((id = NPW_CreateStringIdentifierSink (str_copy)) == NULL)
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free (str_copy);
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return id;
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}
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NPW_Identifier
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NPW_CreateStringIdentifierSink (char *str)
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{
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NPW_Identifier id = NPW_MemAlloc0 (sizeof (*id));
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if (id)
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{
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id->type = NPW_IdentifierType_String;
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id->value.s = str;
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}
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return id;
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}
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void
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NPW_DestroyIdentifier (NPW_Identifier id)
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{
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if (id == NULL)
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return;
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if (NPW_IsStringIdentifier (id) && id->value.s)
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free (id->value.s);
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NPW_MemFree (id);
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}
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