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netsurf/riscos/plugin.c

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/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2003 John M Bell <jmb202@ecs.soton.ac.uk>
*/
/*
* TODO:
* - Reshaping plugin by request [Plugin_Reshape_Request (&4d545)]
* - Finish off stream protocol implementation (data from plugin)
* - Parse and act upon the rest of the Plugin_Opening flags
* - Implement remaining messages [Plugin_URL_Access, Plugin_Focus,
* Plugin_Busy, Plugin_Action, Plugin_Abort, Plugin_Inform(ed)?]
* - Handle standalone objects
*/
// #define NDEBUG
#include <assert.h>
#include <ctype.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "netsurf/utils/config.h"
#include "netsurf/content/content.h"
#include "netsurf/desktop/browser.h"
#include "netsurf/desktop/gui.h"
#include "netsurf/render/html.h"
#include "netsurf/render/box.h"
#include "netsurf/riscos/gui.h"
#include "netsurf/riscos/plugin.h"
#include "netsurf/utils/log.h"
#include "netsurf/utils/utils.h"
#include "oslib/mimemap.h"
#include "oslib/os.h"
#include "oslib/osfile.h"
#include "oslib/osfind.h"
#include "oslib/osgbpb.h"
#include "oslib/plugin.h"
#include "oslib/wimp.h"
#ifdef WITH_PLUGIN
/* parameters file creation */
void plugin_write_parameters_file(struct object_params *params);
int plugin_calculate_rsize(char* name, char* data, char* mime);
struct plugin_param_item *plugin_add_item_to_pilist(struct plugin_param_item *pilist, int type, char* name, char* value, char* mime_type);
/* stream handling */
void plugin_create_stream(struct browser_window *bw,
struct object_params *params, struct content *c);
void plugin_write_stream(struct browser_window *bw, struct object_params *params, struct content *c);
void plugin_write_stream_as_file(struct browser_window *bw,
struct object_params *params,
struct content *c);
void plugin_destroy_stream(struct browser_window *bw,
struct object_params *params, struct content *c);
/* linked list handling */
struct plugin_message *plugin_add_message_to_linked_list(plugin_b browser,
plugin_p plugin,
wimp_message *m,
struct plugin_message *reply);
void plugin_remove_message_from_linked_list(struct plugin_message* m);
struct plugin_message *plugin_get_message_from_linked_list(int ref);
void plugin_add_instance_to_list(struct content *c,
struct browser_window *bw,
struct content *page, struct box *box,
struct object_params *params, void **state);
void plugin_remove_instance_from_list(struct object_params *params);
struct plugin_list *plugin_get_instance_from_list(plugin_b browser,
plugin_p plugin);
/* message handling */
void plugin_open(wimp_message *message);
void plugin_opening(wimp_message *message);
void plugin_close(wimp_message *message);
void plugin_closed(wimp_message *message);
void plugin_reshape_request(wimp_message *message);
void plugin_stream_new(wimp_message *message);
void plugin_stream_written(wimp_message *message);
void plugin_url_access(wimp_message *message);
void plugin_status(wimp_message *message);
char *plugin_get_string_value(os_string_value string, char *msg);
/* others */
void plugin_create_sysvar(const char *mime_type, char *sysvar);
int plugin_process_opening(struct object_params *params,
struct plugin_message *message);
void plugin_force_redraw(struct content *object, struct content *c,
unsigned int i);
/*-------------------------------------------------------------------------*/
/* Linked List pointers */
/*-------------------------------------------------------------------------*/
static struct plugin_message pm = {0, 0, 0, 0, 0, &pm, &pm};
static struct plugin_message *pmlist = &pm;
static struct plugin_list pl = {0, 0, 0, 0, 0, 0, &pl, &pl};
static struct plugin_list *plist = &pl;
static int need_reformat = 0;
/*-------------------------------------------------------------------------*/
/* Externally visible functions */
/*-------------------------------------------------------------------------*/
/**
* Initialises plugin system in readiness for receiving object data
*/
void plugin_create(struct content *c)
{
c->data.plugin.data = xcalloc(0, 1);
c->data.plugin.length = 0;
/* we can't create the plugin here, because this is only called
* once, even if the object appears several times */
}
/**
* The content has been added to a page somewhere: launch the plugin.
* This may be called anytime after plugin_create any number of times.
* Each must launch a new plugin.
*
* bw is the window which the plugin is in
* page, box, params are 0 if the object is standalone
* state may be use to store a pointer to state data
*/
void plugin_add_instance(struct content *c, struct browser_window *bw,
struct content *page, struct box *box,
struct object_params *params, void **state)
{
char sysvar[40];
char *varval, *filename, *p;
os_error *e;
wimp_message m;
plugin_message_open *pmo;
os_box b;
struct plugin_message *npm = xcalloc(1, sizeof(*npm));
struct plugin_message *temp;
struct plugin_list *npl = xcalloc(1, sizeof(*npl));
int flags = 0;
if (params == 0) {
/* create object_params struct */
/* struct object_params *nparams = xcalloc(1, sizeof(*nparams));
params = nparams;
params->basehref = xstrdup(c->url);
*/ fprintf(stderr,
"Cannot handle standalone objects\n");
gui_window_set_status(bw->window,
"Plugin Error: Cannot handle standalone objects");
xfree(npm);
xfree(npl);
return;
}
/* write parameters file */
plugin_write_parameters_file(params);
/* Get contents of Alias$@PlugInType_xxx system variable. */
plugin_create_sysvar(c->mime_type, sysvar);
varval = getenv(sysvar);
LOG(("%s: %s", sysvar, varval));
/* Broadcast Message_PlugIn_Open (&4D540) and listen for response
* Message_PlugIn_Opening (&4D541). If no response, try to launch
* plugin by Wimp_StartTask(sysvar). Then re-broadcast Message_PlugIn_Open
* and listen for response. If there is still no response, give up.
* NB: For the bounding box in Message_PlugIn_Open, we choose arbitrary
* values outside the area displayed. This is corrected when
* plugin_reshape_instance is called.
*/
/* Initialise bounding box */
b.x0 = -100;
b.x1 = 0;
b.y0 = 0;
b.y1 = 100;
/* populate plugin_message_open struct */
pmo = (plugin_message_open*)&m.data;
pmo->flags = 0;
pmo->reserved = 0;
pmo->browser = (plugin_b)params->browser;
pmo->parent_window = bw->window->window;
pmo->bbox = b;
xmimemaptranslate_mime_type_to_filetype(c->mime_type, &pmo->file_type);
pmo->filename.pointer = params->filename;
m.size = 60;
m.your_ref = 0;
m.action = message_PLUG_IN_OPEN;
/* add message to list */
temp = plugin_add_message_to_linked_list((plugin_b)params->browser, (plugin_p)0, &m, (struct plugin_message*)0);
LOG(("Sending Message: &4D540"));
e = xwimp_send_message(wimp_USER_MESSAGE_RECORDED, &m, wimp_BROADCAST);
if (e) {
LOG(("Error: %s", e->errmess));
plugin_remove_message_from_linked_list(temp);
xfree(npm);
xfree(npl);
return;
}
/* wait for wimp poll */
while(temp->poll == 0)
gui_poll(true);
if(temp->plugin != 0 && temp->reply != 0) {
/* ok, we got a reply */
LOG(("Reply to message %p: %p", temp, temp->reply));
flags = plugin_process_opening(params, temp);
plugin_remove_message_from_linked_list(temp->reply);
plugin_remove_message_from_linked_list(temp);
xfree(npm);
xfree(npl);
} else {
/* no reply so issue Wimp_StartTask(varval) */
LOG(("No reply to message %p", temp));
plugin_remove_message_from_linked_list(temp);
LOG(("Starting task: %s", varval));
e = xwimp_start_task((char const*)varval, NULL);
if (e) {
LOG(("Error: %s", e->errmess));
xfree(npm);
xfree(npl);
return;
}
/* hmm, deja-vu */
temp = plugin_add_message_to_linked_list((plugin_b)params->browser, (plugin_p)0, &m, (struct plugin_message*)0);
LOG(("Re-Sending Message &4D540"));
e = xwimp_send_message(wimp_USER_MESSAGE_RECORDED, &m,
wimp_BROADCAST);
if (e) {
LOG(("Error: %s", e->errmess));
xfree(npm);
xfree(npl);
return;
}
/* wait for wimp poll */
while(temp->poll == 0)
gui_poll(true);
if(temp->plugin != 0 && temp->reply != 0) {
/* ok, we got a reply */
LOG(("Reply to message %p: %p", temp, temp->reply));
flags = plugin_process_opening(params, temp);
plugin_remove_message_from_linked_list(temp->reply);
plugin_remove_message_from_linked_list(temp);
xfree(npm);
xfree(npl);
} else {
/* no reply so give up */
LOG(("No reply to message %p", temp));
plugin_remove_message_from_linked_list(temp);
xfree(npm);
xfree(npl);
return;
}
}
/* At this point, it's certain that we can handle this object so
* add it to the list of plugin instances.
*/
plugin_add_instance_to_list(c, bw, page, box, params, state);
/* TODO - handle other flags (see below) */
if(flags & 0x4) { /* wants data fetching */
plugin_create_stream(bw, params, c);
plugin_destroy_stream(bw, params, c);
/* delete file_as_stream file
* (we don't care if the file doesn't exist)
*/
filename = strdup(params->filename);
p = strrchr((const char*)filename, 'p');
filename[(p-filename)] = 'd';
xosfile_delete((char const*)filename, NULL, NULL,
NULL, NULL, NULL);
}
if (!(flags & 0x08)) /* will delete parameters file */
xosfile_delete((char const*)params->filename, NULL, NULL,
NULL, NULL, NULL);
}
/**
* Process plugin_opening message flags
* NB: this is NOT externally visible.
* it's just here because it's referred to in the TODO above
*/
int plugin_process_opening(struct object_params *params,
struct plugin_message *message) {
plugin_message_opening *pmo;
params->plugin = (int)message->reply->plugin;
params->plugin_task = (unsigned int)message->reply->m->sender;
pmo = (plugin_message_opening*)&message->reply->m->data;
/* LOG(("pmo->flags = %x", pmo->flags));
if(pmo->flags & 0x1)
LOG(("accepts input focus"));
if(pmo->flags & 0x2)
LOG(("wants code fetching"));
if(pmo->flags & 0x10)
LOG(("still busy"));
if(pmo->flags & 0x20)
LOG(("supports extended actions"));
if(pmo->flags & 0x40)
LOG(("has helper window"));
*/
return (int)pmo->flags;
}
/**
* A plugin is no longer required, eg. the page containing it has
* been closed.
*
* Any storage associated with state must be freed.
*/
void plugin_remove_instance(struct content *c, struct browser_window *bw,
struct content *page, struct box *box,
struct object_params *params, void **state)
{
wimp_message m;
plugin_message_close *pmc;
struct plugin_message *temp;
if (params == 0) {
return;
}
pmc = (plugin_message_close*)&m.data;
pmc->flags = 0;
pmc->plugin = (plugin_p)params->plugin;
pmc->browser = (plugin_b)params->browser;
m.size = 32;
m.your_ref = 0;
m.action = message_PLUG_IN_CLOSE;
temp = plugin_add_message_to_linked_list(pmc->browser, pmc->plugin, &m, 0);
LOG(("Sending message &4D542"));
xwimp_send_message(wimp_USER_MESSAGE_RECORDED, &m,
(wimp_t)params->plugin_task);
/* wait for wimp poll */
while (temp == 0)
gui_poll(true);
if (temp->reply != 0){
plugin_remove_message_from_linked_list(temp->reply);
plugin_remove_message_from_linked_list(temp);
}
else {
LOG(("message_PLUG_IN_CLOSE bounced"));
plugin_remove_message_from_linked_list(temp);
}
/* delete instance from list */
plugin_remove_instance_from_list(params);
}
/**
* The box containing the plugin has moved or resized,
* or the window containing the plugin has resized if standalone.
*/
void plugin_reshape_instance(struct content *c, struct browser_window *bw,
struct content *page, struct box *box,
struct object_params *params, void **state)
{
/* By now, we've got the plugin up and running in a nested window
* off the viewable page area. Now we want to display it in its place.
* Therefore, broadcast a Message_PlugIn_Reshape (&4D544) with the values
* given to us.
*/
wimp_message m;
plugin_message_reshape *pmr;
os_box bbox;
unsigned long x, y;
if (params == 0) {
return;
}
box_coords(box, (unsigned long*)&x, (unsigned long*)&y);
bbox.x0 = ((int)x << 1);
bbox.y1 = -(((int)y << 1));
bbox.x1 = (bbox.x0 + (box->width << 1));
bbox.y0 = (bbox.y1 - (box->height << 1));
LOG(("Box w, h: %ld %ld", box->width, box->height));
LOG(("BBox: [(%d,%d),(%d,%d)]", bbox.x0, bbox.y0, bbox.x1, bbox.y1));
pmr = (plugin_message_reshape*)&m.data;
pmr->flags = 0;
pmr->plugin = (plugin_p) params->plugin;
pmr->browser = (plugin_b) params->browser;
pmr->parent_window = (wimp_w) bw->window->window;
pmr->bbox = bbox;
m.size = 52;
m.your_ref = 0;
m.action = message_PLUG_IN_RESHAPE;
LOG(("Sending Message &4D544"));
xwimp_send_message(wimp_USER_MESSAGE, &m, (wimp_t)params->plugin_task);
}
static const char * const ALIAS_PREFIX = "Alias$@PlugInType_";
/**
* Creates system variable from mime type
* NB: this is NOT externally visible
* it just makes sense to keep it with the ALIAS_PREFIX definition above.
*/
void plugin_create_sysvar(const char *mime_type, char* sysvar)
{
unsigned int *fv;
os_error *e;
e = xmimemaptranslate_mime_type_to_filetype(mime_type, (bits *) &fv);
sprintf(sysvar, "%s%x", ALIAS_PREFIX, (unsigned int)fv);
}
/**
* Tests whether we can handle an object using a browser plugin
* returns true if we can handle it, false if we can't.
*/
bool plugin_handleable(const char *mime_type)
{
char sysvar[40];
unsigned int *fv;
os_error *e;
e = xmimemaptranslate_mime_type_to_filetype(mime_type, (bits *) &fv);
if (e) {
LOG(("xmimemaptranslate_mime_type_to_filetype failed: %s", e->errmess));
return false;
}
sprintf(sysvar, "%s%x", ALIAS_PREFIX, (unsigned int)fv);
LOG(("%s, %s", mime_type, sysvar));
if (getenv(sysvar) == 0)
return false;
return true;
}
/**
* processes data retrieved by the fetch process
*/
void plugin_process_data(struct content *c, char *data, unsigned long size)
{
/* If the plugin requests, we send the data to it via the
* plugin stream protocol.
* Also, we should listen for Message_PlugIn_URL_Access (&4D54D)
* as the plugin may need us to retrieve URLs for it.
* We should also listen for Message_PlugIn_Closed (&4D543).
* If this occurs, the plugin has exited with an error.
* Therefore, we need to stop the fetch and exit.
*/
/* I think we should just buffer the data here, in case the
* plugin requests it sometime in the future. - James */
c->data.plugin.data = xrealloc(c->data.plugin.data, c->data.plugin.length + size);
memcpy(c->data.plugin.data + c->data.plugin.length, data, size);
c->data.plugin.length += size;
c->size += size;
}
/**
* This isn't needed by the plugin system as all the data processing is done
* externally. Therefore, just tell NetSurf that everything's OK.
*/
int plugin_convert(struct content *c, unsigned int width, unsigned int height)
{
c->status=CONTENT_STATUS_DONE;
return 0;
}
void plugin_revive(struct content *c, unsigned int width, unsigned int height)
{
}
void plugin_reformat(struct content *c, unsigned int width, unsigned int height)
{
}
/**
* Called when completely finished with an object.
* Simply frees buffered data
*/
void plugin_destroy(struct content *c)
{
/* simply free buffered data */
xfree(c->data.plugin.data);
}
/**
* Redraw plugin on page.
*/
void plugin_redraw(struct content *c, long x, long y,
unsigned long width, unsigned long height,
long clip_x0, long clip_y0, long clip_x1, long clip_y1)
{
struct plugin_list *npl;
if(need_reformat) {
content_reformat(c, c->available_width, 0);
for(npl = plist->next; npl != plist; npl = npl->next)
plugin_reshape_instance(npl->c, npl->bw, npl->page,
npl->box, npl->params,
npl->state);
need_reformat = 0;
}
}
/*-------------------------------------------------------------------------*/
/* Parameters file handling functions */
/*-------------------------------------------------------------------------*/
/**
* Writes the parameters file.
*/
void plugin_write_parameters_file(struct object_params *params)
{
struct plugin_params* temp;
struct plugin_param_item* ppi;
struct plugin_param_item* pilist = 0;
int *time;
char *tstr;
FILE *fp;
/* Create the file */
xosfile_create_dir("<Wimp$ScrapDir>.WWW", 77);
xosfile_create_dir("<Wimp$ScrapDir>.WWW.NetSurf", 77);
/* path + filename + terminating NUL */
params->filename = xcalloc(strlen(getenv("Wimp$ScrapDir"))+13+10+1,
sizeof(char));
xos_read_monotonic_time((int*)&time);
tstr = xcalloc(40, sizeof(char));
sprintf(tstr, "%01u", (unsigned int)time<<8);
sprintf(params->filename, "%s.WWW.NetSurf.p%1.9s",
getenv("Wimp$ScrapDir"), tstr);
params->browser = (unsigned int)time<<8;
xfree(tstr);
LOG(("filename: %s", params->filename));
/* Write object attributes first */
/* classid is checked first */
if(params->classid != 0 && params->codetype != 0) {
pilist = plugin_add_item_to_pilist(pilist, 1, "CLASSID",
params->classid,
params->codetype);
}
/* otherwise, we check the data attribute */
else if(params->data !=0 && params->type != 0) {
pilist = plugin_add_item_to_pilist(pilist, 1, "DATA",
params->data,
params->type);
}
/* if codebase is specified, write it as well */
if(params->codebase != 0) {
pilist = plugin_add_item_to_pilist(pilist, 1,
"CODEBASE",
params->codebase, NULL);
}
/* Iterate through the parameter list, creating the parameters
* file as we go. We can free up the memory as we go.
*/
while(params->params != 0) {
LOG(("name: %s", params->params->name == 0 ? "not set" : params->params->name));
LOG(("value: %s", params->params->value == 0 ? "not set" : params->params->value));
LOG(("type: %s", params->params->type == 0 ? "not set" : params->params->type));
LOG(("valuetype: %s", params->params->valuetype));
if(strcasecmp(params->params->valuetype, "data") == 0)
pilist = plugin_add_item_to_pilist(pilist, 1,
params->params->name,
params->params->value,
params->params->type);
if(strcasecmp(params->params->valuetype, "ref") == 0)
pilist = plugin_add_item_to_pilist(pilist, 2,
params->params->name,
params->params->value,
params->params->type);
if(strcasecmp(params->params->valuetype, "object") == 0)
pilist = plugin_add_item_to_pilist(pilist, 3,
params->params->name,
params->params->value,
params->params->type);
temp = params->params;
params->params = params->params->next;
xfree(temp);
}
/* Now write mandatory special parameters */
/* BASEHREF */
pilist = plugin_add_item_to_pilist(pilist, 4, "BASEHREF",
params->basehref, NULL);
/* USERAGENT */
pilist = plugin_add_item_to_pilist(pilist, 4, "USERAGENT",
"NetSurf", NULL);
/* UAVERSION */
pilist = plugin_add_item_to_pilist(pilist, 4, "UAVERSION",
"0.01", NULL);
/* APIVERSION */
pilist = plugin_add_item_to_pilist(pilist, 4, "APIVERSION",
"1.10", NULL);
/* BGCOLOR - needs fixing to work properly.
* Currently, it assumes FFFFFF00 (BBGGRR00) */
pilist = plugin_add_item_to_pilist(pilist, 4, "BGCOLOR",
"FFFFFF00", NULL);
/* Write file */
fp = fopen(params->filename, "wb+");
while (pilist != 0) {
fwrite(&pilist->type, (unsigned int)sizeof(int), 1, fp);
fwrite(&pilist->rsize, (unsigned int)sizeof(int), 1, fp);
fwrite(&pilist->nsize, (unsigned int)sizeof(int), 1, fp);
fwrite(pilist->name, (unsigned int)strlen(pilist->name), 1, fp);
for(; pilist->npad != 0; pilist->npad--)
fputc('\0', fp);
fwrite(&pilist->vsize, (unsigned int)sizeof(int), 1, fp);
fwrite(pilist->value, (unsigned int)strlen(pilist->value), 1, fp);
for(; pilist->vpad != 0; pilist->vpad--)
fputc('\0', fp);
fwrite(&pilist->msize, (unsigned int)sizeof(int), 1, fp);
if(pilist->msize > 0) {
fwrite(pilist->mime_type,
(unsigned int)strlen(pilist->mime_type), 1, fp);
for(; pilist->mpad != 0; pilist->mpad--)
fputc('\0', fp);
}
ppi = pilist;
pilist = pilist->next;
xfree(ppi);
}
fwrite("\0", sizeof(char), 4, fp);
fclose(fp);
}
/**
* Calculates the size of a parameter file record
*/
int plugin_calculate_rsize(char* name, char* data, char* mime) {
int ret = 0;
ret += (4 + strlen(name) + 3) / 4 * 4; /* name */
ret += (4 + strlen(data) + 3) / 4 * 4; /* data */
if (mime != NULL)
ret += (4 + strlen(mime) + 3) / 4 * 4; /* mime type */
else
ret += 4;
return ret;
}
/**
* Adds an item to the list of parameter file records
*/
struct plugin_param_item *plugin_add_item_to_pilist(struct plugin_param_item *pilist, int type, char* name, char* value, char* mime_type) {
struct plugin_param_item *ppi = xcalloc(1, sizeof(*ppi));
/* initialise struct */
ppi->type = 0;
ppi->rsize = 0;
ppi->nsize = 0;
ppi->name = 0;
ppi->npad = 0;
ppi->vsize = 0;
ppi->value = 0;
ppi->vpad = 0;
ppi->msize = 0;
ppi->mime_type = 0;
ppi->mpad = 0;
ppi->type = type;
ppi->rsize = plugin_calculate_rsize(name, value, mime_type);
ppi->nsize = strlen(name);
ppi->name = xstrdup(name);
ppi->npad = 4 - (ppi->nsize%4 == 0 ? 4 : ppi->nsize%4);
ppi->vsize = strlen(value);
ppi->value = xstrdup(value);
ppi->vpad = 4 - (ppi->vsize%4 == 0 ? 4 : ppi->vsize%4);
if(mime_type != 0) {
ppi->msize = strlen(mime_type);
ppi->mime_type = xstrdup(mime_type);
ppi->mpad = 4 - (ppi->msize%4 == 0 ? 4 : ppi->msize%4);
}
ppi->next = pilist;
return ppi;
}
/*-------------------------------------------------------------------------*/
/* Plugin Stream handling functions */
/*-------------------------------------------------------------------------*/
/**
* Creates a plugin stream
*/
void plugin_create_stream(struct browser_window *bw, struct object_params *params, struct content *c) {
wimp_message m;
plugin_message_stream_new *pmsn;
struct plugin_message *temp;
pmsn = (plugin_message_stream_new*)&m.data;
pmsn->flags = 0;
pmsn->plugin = (plugin_p)params->plugin;
pmsn->browser = (plugin_b)params->browser;
pmsn->stream = (plugin_s)0;
pmsn->browser_stream = (plugin_bs)params->browser;
pmsn->url.pointer = c->url;
pmsn->end = c->data.plugin.length;
pmsn->last_modified_date = 0;
pmsn->notify_data = 0;
pmsn->mime_type.pointer = c->mime_type;
pmsn->target_window.offset = 0;
m.size = 64;
m.your_ref = 0;
m.action = message_PLUG_IN_STREAM_NEW;
temp = plugin_add_message_to_linked_list(pmsn->browser, pmsn->plugin, &m, 0);
LOG(("Sending message &4D548"));
xwimp_send_message(wimp_USER_MESSAGE_RECORDED, &m, (wimp_t)params->plugin_task);
/* wait for wimp poll */
while(temp->poll == 0)
gui_poll(true);
pmsn = (plugin_message_stream_new*)&temp->reply->m->data;
params->browser_stream = params->browser;
params->plugin_stream = (int)pmsn->stream;
if((pmsn->flags == 0) || (pmsn->flags == 1) || (pmsn->flags == 2)) {
plugin_write_stream(bw, params, c);
}
else if((pmsn->flags == 3)) {
plugin_write_stream_as_file(bw, params, c);
}
/* clean up */
plugin_remove_message_from_linked_list(temp->reply);
plugin_remove_message_from_linked_list(temp);
}
/**
* Writes to an open stream
*/
void plugin_write_stream(struct browser_window *bw, struct object_params *params, struct content *c) {
wimp_message m;
plugin_message_stream_write *pmsw;
plugin_message_stream_written *pmswt;
struct plugin_message *temp;
unsigned int consumed = 0;
pmsw = (plugin_message_stream_write*)&m.data;
pmsw->flags = 0;
pmsw->plugin = (plugin_p)params->plugin;
pmsw->browser = (plugin_b)params->browser;
pmsw->stream = (plugin_s)params->plugin_stream;
pmsw->browser_stream = (plugin_bs)params->browser_stream;
pmsw->url.pointer = c->url;
pmsw->end = c->data.plugin.length;
pmsw->last_modified_date = 0;
pmsw->notify_data = 0;
pmsw->offset = 0;
pmsw->length = c->data.plugin.length;
pmsw->data = (byte*)c->data.plugin.data;
m.size = 68;
m.your_ref = 0;
m.action = message_PLUG_IN_STREAM_WRITE;
while (consumed < c->data.plugin.length) {
pmsw->length = c->data.plugin.length;
temp = plugin_add_message_to_linked_list(pmsw->browser, pmsw->plugin, &m, 0);
LOG(("Sending message &4D54A"));
xwimp_send_message(wimp_USER_MESSAGE_RECORDED, &m, (wimp_t)params->plugin_task);
/* wait for wimp poll */
while(temp->poll == 0)
gui_poll(true);
pmswt = (plugin_message_stream_written*)&temp->reply->m->data;
if(pmswt->length > 0) {
consumed += pmswt->length;
pmsw->offset += pmswt->length + 1;
plugin_remove_message_from_linked_list(temp->reply);
plugin_remove_message_from_linked_list(temp);
}
else {
plugin_remove_message_from_linked_list(temp->reply);
plugin_remove_message_from_linked_list(temp);
return;
}
}
}
/**
* Writes a stream as a file
*/
void plugin_write_stream_as_file(struct browser_window *bw, struct object_params *params, struct content *c) {
wimp_message m;
plugin_message_stream_as_file *pmsaf;
unsigned int filetype;
char *filename = strdup(params->filename), *p;
pmsaf = (plugin_message_stream_as_file*)&m.data;
pmsaf->flags = 0;
pmsaf->plugin = (plugin_p)params->plugin;
pmsaf->browser = (plugin_b)params->browser;
pmsaf->stream = (plugin_s)params->plugin_stream;
pmsaf->browser_stream = (plugin_bs)params->browser_stream;
pmsaf->url.pointer = c->url;
pmsaf->end = 0;
pmsaf->last_modified_date = 0;
pmsaf->notify_data = 0;
p = strrchr((const char*)filename, 'p');
filename[(p-filename)] = 'd';
pmsaf->filename.pointer = filename;
m.size = 60;
m.your_ref = 0;
m.action = message_PLUG_IN_STREAM_AS_FILE;
xmimemaptranslate_mime_type_to_filetype(c->mime_type, (bits *) &filetype);
xosfile_save_stamped((char const*)filename, filetype, c->data.plugin.data, c->data.plugin.data + c->data.plugin.length);
LOG(("Sending message &4D54C"));
xwimp_send_message(wimp_USER_MESSAGE, &m, (wimp_t)params->plugin_task);
}
/**
* Destroys a plugin stream
*/
void plugin_destroy_stream(struct browser_window *bw, struct object_params *params, struct content *c) {
wimp_message m;
plugin_message_stream_destroy *pmsd;
pmsd = (plugin_message_stream_destroy*)&m.data;
pmsd->flags = 0;
pmsd->plugin = (plugin_p)params->plugin;
pmsd->browser = (plugin_b)params->browser;
pmsd->stream = (plugin_s)params->plugin_stream;
pmsd->browser_stream = (plugin_bs)params->browser_stream;
pmsd->url.pointer = c->url;
pmsd->end = 0;
pmsd->last_modified_date = 0;
pmsd->notify_data = 0;
pmsd->reason = plugin_STREAM_DESTROY_FINISHED;
m.size = 60;
m.your_ref = 0;
m.action = message_PLUG_IN_STREAM_DESTROY;
LOG(("Sending message &4D549"));
xwimp_send_message(wimp_USER_MESSAGE, &m, (wimp_t)params->plugin_task);
}
/*-------------------------------------------------------------------------*/
/* Linked List handling functions */
/*-------------------------------------------------------------------------*/
/**
* Adds a message to the list of pending messages
*/
struct plugin_message *plugin_add_message_to_linked_list(plugin_b browser, plugin_p plugin, wimp_message *m, struct plugin_message *reply) {
struct plugin_message *npm = xcalloc(1, sizeof(*npm));
npm->poll = 0;
npm->browser = browser;
npm->plugin = plugin;
npm->m = m;
npm->reply = reply;
npm->prev = pmlist->prev;
npm->next = pmlist;
pmlist->prev->next = npm;
pmlist->prev = npm;
LOG(("Added Message: %p", npm));
return pmlist->prev;
}
/**
* Removes a message from the list of pending messages
*/
void plugin_remove_message_from_linked_list(struct plugin_message* m) {
m->prev->next = m->next;
m->next->prev = m->prev;
LOG(("Deleted Message: %p", m));
xfree(m);
}
/**
* Retrieves a message from the list of pending messages
* returns NULL if no message is found
*/
struct plugin_message *plugin_get_message_from_linked_list(int ref) {
struct plugin_message *npm;
if(ref == 0)
return NULL;
for(npm = pmlist->next; npm != pmlist && npm->m->my_ref != ref;
npm = npm->next)
;
if(npm != pmlist) {
LOG(("Got message: %p", npm));
return npm;
}
return NULL;
}
/**
* Adds a plugin instance to the list of plugin instances.
*/
void plugin_add_instance_to_list(struct content *c, struct browser_window *bw, struct content *page, struct box *box, struct object_params *params, void **state) {
struct plugin_list *npl = xcalloc(1, sizeof(*npl));
npl->c = c;
npl->bw = bw;
npl->page = page;
npl->box = box;
npl->params = params;
npl->state = state;
npl->prev = plist->prev;
npl->next = plist;
plist->prev->next = npl;
plist->prev = npl;
}
/**
* Removes a plugin instance from the list of plugin instances
*/
void plugin_remove_instance_from_list(struct object_params *params) {
struct plugin_list *temp =
plugin_get_instance_from_list((plugin_b)params->browser,
(plugin_p)params->plugin);
if(temp != NULL) {
temp->prev->next = temp->next;
temp->next->prev = temp->prev;
xfree(temp);
}
}
/**
* Retrieves an instance of a plugin from the list of plugin instances
* returns NULL if no instance is found
*/
struct plugin_list *plugin_get_instance_from_list(plugin_b browser, plugin_p plugin) {
struct plugin_list *npl;
for(npl = plist->next; (npl != plist)
&& (((plugin_b)npl->params->browser != browser)
&& ((plugin_p)npl->params->plugin != plugin));
npl = npl->next)
;
if(npl != plist)
return npl;
return NULL;
}
/*-------------------------------------------------------------------------*/
/* WIMP Message processing functions */
/*-------------------------------------------------------------------------*/
/**
* Parses wimp messages
*/
void plugin_msg_parse(wimp_message *message, int ack)
{
LOG(("Parsing message"));
switch(message->action) {
case message_PLUG_IN_OPENING:
plugin_opening(message);
break;
case message_PLUG_IN_CLOSED:
plugin_closed(message);
break;
case message_PLUG_IN_RESHAPE_REQUEST:
plugin_reshape_request(message);
break;
case message_PLUG_IN_FOCUS:
// plugin_focus();
break;
case message_PLUG_IN_URL_ACCESS:
plugin_url_access(message);
break;
case message_PLUG_IN_STATUS:
plugin_status(message);
break;
case message_PLUG_IN_BUSY:
// plugin_busy();
break;
/* OSLib doesn't provide this, as it's
* reasonably new and not obviously documented.
* We ignore it for now.
case message_PLUG_IN_INFORMED:
*/
case message_PLUG_IN_STREAM_NEW:
plugin_stream_new(message);
break;
case message_PLUG_IN_STREAM_WRITE:
// plugin_stream_write();
break;
case message_PLUG_IN_STREAM_WRITTEN:
plugin_stream_written(message);
break;
case message_PLUG_IN_STREAM_DESTROY:
// plugin_stream_destroy();
break;
/* These cases occur when a message is bounced
* For simplicity, we do nothing unless the message came in
* a wimp_USER_MESSAGE_ACKNOWLEDGE (ie ack = 1)
*/
case message_PLUG_IN_OPEN:
if(ack)
plugin_open(message);
break;
case message_PLUG_IN_CLOSE:
if(ack)
plugin_close(message);
break;
case message_PLUG_IN_RESHAPE:
case message_PLUG_IN_STREAM_AS_FILE:
case message_PLUG_IN_NOTIFY:
case message_PLUG_IN_ABORT:
case message_PLUG_IN_ACTION:
default:
break;
}
}
/**
* Handles receipt of plugin_open messages
*/
void plugin_open(wimp_message *message) {
struct plugin_message *npm = plugin_get_message_from_linked_list(message->my_ref);
LOG(("Acknowledgement of %p", npm));
/* notify plugin_open message entry in list */
if (npm != NULL)
npm->poll = 1;
}
/**
* Handles receipt of plugin_open messages
*/
void plugin_opening(wimp_message *message) {
struct plugin_message *npm = plugin_get_message_from_linked_list(message->your_ref);
struct plugin_message *reply;
plugin_message_opening *pmo = (plugin_message_opening*)&message->data;
/* add this message to linked list */
reply = plugin_add_message_to_linked_list(pmo->browser, pmo->plugin, message, 0);
/* notify plugin_open message entry in list */
if (npm != NULL) {
npm->poll = 1;
npm->plugin = pmo->plugin;
npm->reply = reply;
}
}
/**
* Handles receipt of plugin_close messages
*/
void plugin_close(wimp_message *message) {
struct plugin_message *npm = plugin_get_message_from_linked_list(message->my_ref);
/* notify plugin_open message entry in list */
if (npm != NULL)
npm->poll = 1;
}
/**
* Handles receipt of plugin_closed messages
*/
void plugin_closed(wimp_message *message) {
struct plugin_message *npm = plugin_get_message_from_linked_list(message->your_ref);
struct plugin_message *reply;
plugin_message_closed *pmc = (plugin_message_closed*)&message->data;
struct plugin_list *npl = plugin_get_instance_from_list(pmc->browser, pmc->plugin);
/* add this message to linked list */
reply = plugin_add_message_to_linked_list(pmc->browser, pmc->plugin, message, 0);
/* notify plugin_open message entry in list */
if (npm != NULL) {
npm->poll = 1;
npm->reply = reply;
}
/* This is not the result of a plugin_open message */
else {
if(pmc->flags & 0x2) {
LOG(("Err Mess: %s", pmc->error_text));
gui_window_set_status(npl->bw->window,
(const char*)pmc->error_text);
}
plugin_remove_message_from_linked_list(reply);
}
}
/**
* Handles receipt of plugin_reshape_request messages
*/
void plugin_reshape_request(wimp_message *message) {
struct plugin_list *npl;
plugin_message_reshape_request *pmrr = (plugin_message_reshape_request*)&message->data;
unsigned int i;
npl = plugin_get_instance_from_list(pmrr->browser, pmrr->plugin);
for (i = 0; i != npl->page->data.html.object_count &&
npl->page->data.html.object[i].content != npl->c;
i++) ;
if (i != npl->page->data.html.object_count) {
/* should probably shift by x and y eigen values here */
npl->c->width = pmrr->size.x >> 1;
npl->c->height = pmrr->size.y >> 1;
plugin_force_redraw(npl->c, npl->page, i);
}
LOG(("requested (width, height): (%d, %d)", pmrr->size.x, pmrr->size.y));
}
/**
* Handles receipt of plugin_stream_new messages
*/
void plugin_stream_new(wimp_message *message) {
struct plugin_message *npm = plugin_get_message_from_linked_list(message->your_ref);
struct plugin_message *reply;
plugin_message_stream_new *pmsn = (plugin_message_stream_new*)&message->data;
/* add this message to linked list */
reply = plugin_add_message_to_linked_list(pmsn->browser, pmsn->plugin, message, 0);
/* notify plugin_open message entry in list */
if(npm != NULL) {
npm->poll = 1;
npm->plugin = pmsn->plugin;
npm->reply = reply;
}
}
/**
* Handles receipt of plugin_stream_written messages
*/
void plugin_stream_written(wimp_message *message) {
struct plugin_message *npm = plugin_get_message_from_linked_list(message->your_ref);
struct plugin_message *reply;
plugin_message_stream_written *pmswt = (plugin_message_stream_written*)&message->data;
/* add this message to linked list */
reply = plugin_add_message_to_linked_list(pmswt->browser, pmswt->plugin, message, 0);
/* notify plugin_open message entry in list */
if(npm != NULL) {
npm->poll = 1;
npm->plugin = pmswt->plugin;
npm->reply = reply;
}
}
/**
* Handles plugin_url_access messages
*/
void plugin_url_access(wimp_message *message) {
wimp_message m;
struct plugin_list *npl;
plugin_message_url_access *pmua = (plugin_message_url_access*)&message->data;
plugin_message_notify *pmn = (plugin_message_notify*)&m.data;
int notify = 0, post = 0, file = 0;
char *url = plugin_get_string_value(pmua->url, (char*)pmua);
char *window;
npl = plugin_get_instance_from_list(pmua->browser, pmua->plugin);
if (pmua->flags & 0x01) notify = 1;
if (pmua->flags & 0x02) post = 1;
if (pmua->flags & 0x04) file = 1;
/* fetch url to window */
if (pmua->target_window.offset != 0 &&
pmua->target_window.pointer != 0) {
window = plugin_get_string_value(pmua->target_window,
(char*)pmua);
LOG(("flags: %d, url: %s, window: %s", pmua->flags, url, window));
/* TODO: proper _parent and _self support (needs frames)
* other window names
*/
if (!post) { /* GET request */
if (strcasecmp(window, "_self") == 0 ||
strcasecmp(window, "_parent") == 0 ||
strcasecmp(window, "_top") == 0 ||
strcasecmp(window, "") == 0) {
browser_window_go(npl->bw, url);
}
else if (strcasecmp(window, "_blank") == 0) {
browser_window_create(url);
}
}
else { /* POST request */
/* fetch URL */
}
}
/* fetch data and stream to plugin */
else {
if (!post) { /* GET request */
/* fetch URL */
}
else { /* POST request */
/* fetch URL */
}
/* stream data to plugin */
}
if (notify) {
/* send message_plugin_notify to plugin task */
pmn->flags = 0;
pmn->plugin = pmua->plugin;
pmn->browser = pmua->browser;
pmn->url.pointer = url;
pmn->reason = (plugin_notify_reason)0;
pmn->notify_data = pmua->notify_data;
m.size = 44;
m.your_ref = message->my_ref;
m.action = message_PLUG_IN_NOTIFY;
xwimp_send_message(wimp_USER_MESSAGE, &m, message->sender);
}
}
/**
* Handles receipt of plugin_status messages
*/
void plugin_status(wimp_message *message) {
plugin_message_status *pms = (plugin_message_status*)&message->data;
struct plugin_list *npl = plugin_get_instance_from_list(pms->browser, pms->plugin);
gui_window_set_status(npl->bw->window,
(const char*)plugin_get_string_value(pms->message,
(char*)pms));
}
/**
* Utility function to grab string data from plugin message blocks
*/
char *plugin_get_string_value(os_string_value string, char *msg) {
if(string.offset == 0 || string.offset > 256) {
return string.pointer;
}
return &msg[string.offset];
}
void plugin_force_redraw(struct content *object, struct content *c,
unsigned int i) {
struct box *box = c->data.html.object[i].box;
box->object = object;
box->width = box->min_width = box->max_width = object->width;
box->height = object->height;
box->style->width.width = CSS_WIDTH_LENGTH;
box->style->width.value.length.unit = CSS_UNIT_PX;
box->style->width.value.length.value = object->width;
box->style->height.height = CSS_HEIGHT_LENGTH;
box->style->height.length.unit = CSS_UNIT_PX;
box->style->height.length.value = object->height;
need_reformat = 1;
/* We don't call content_reformat here
because doing so breaks things :-)
*/
}
#endif
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