c语言 - 托管 Flash 不会加载 swf 资源(xml、图像等)



我最初试图在我的Unix机器上使用gtk2实现swf阅读器。工作,我可以渲染简单的 swf 文件。现在,我正在尝试使用xml配置向我的flash文件添加配置,添加图像等。失败,不会得到传递 geturlnotify((。这是我的代码:

#include <stdio.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <string.h>
#include <unistd.h>
#include <ctype.h>
#include <gtk/gtk.h> 
#include <gdk/gdkx.h>
#include "npupp.h"
#define FLASH_PLUGIN_SO "./libflashplayer.so"
void *flash_plugin_handle;
NPNetscapeFuncs browserFuncs;
NPPluginFuncs   pluginFuncs;
GtkWidget *main_window;
char* fileName = NULL;
NPStream *       stream;
const char * uagent = "Axt/1.0";
//Default window size
int WINDOW_XSIZE = 800;
int WINDOW_YSIZE = 600;
//Default child window position (flash player)
int xPosition = 0;
int yPosition = 0;
NPError (*iNP_Initialize)(NPNetscapeFuncs* bFuncs, NPPluginFuncs* pFuncs);
NPError (*iNP_Shutdown)();
char*   (*iNP_GetMIMEDescription)();
void* loadFlashPluginSo() {
  void *handle;
  handle = dlopen(FLASH_PLUGIN_SO, RTLD_LAZY | RTLD_LOCAL);
  if(!handle) {
    fprintf(stderr, "[-] error loading libflashplayer.so: %sn", dlerror());
    exit(1);
  } 
  fprintf(stderr,"[+] loaded libflashplayer.son");
  return handle;
}
void* loadSymbol(void *handle, const char *name) {
  char *error;
  void *ret;
  ret = dlsym(handle, name);
  if((error = dlerror()) != NULL) {
    fprintf(stderr, "[-] error loading symbol %s: %sn", name, error);
    exit(1);
  } else {
    fprintf(stderr,"[+] loaded symbol %s, address: %pn", name, ret);
  }
  return ret;
}
void loadNPEntryPoints(void *handle) {
  iNP_Initialize=loadSymbol(handle, "NP_Initialize");
  iNP_Shutdown=loadSymbol(handle, "NP_Shutdown");
  iNP_GetMIMEDescription = loadSymbol(handle,"NP_GetMIMEDescription");
}
void printPluginEntrypoints(NPPluginFuncs* pFuncs) {
  fprintf(stderr,"[*] NPP struct:n");
  fprintf(stderr,"t- NPP_size:                 %8dn",pFuncs->size);
  fprintf(stderr,"t- NPP_version:              %8dn",pFuncs->version);
  fprintf(stderr,"t- NPP_NewProcPtr:           %pn", pFuncs->newp);
  fprintf(stderr,"t- NPP_DestroyProcPtr:       %pn", pFuncs->destroy);
  fprintf(stderr,"t- NPP_SetWindowProcPtr:     %pn", pFuncs->setwindow);
  fprintf(stderr,"t- NPP_NewStreamProcPtr:     %pn", pFuncs->newstream);
  fprintf(stderr,"t- NPP_DestroyStreamProcPtr: %pn", pFuncs->destroystream);
  fprintf(stderr,"t- NPP_StreamAsFileProcPtr:  %pn", pFuncs->asfile);
  fprintf(stderr,"t- NPP_WriteReadyProcPtr:    %pn", pFuncs->writeready);
  fprintf(stderr,"t- NPP_WriteProcPtr:         %pn", pFuncs->write);
  fprintf(stderr,"t- NPP_PrintProcPtr:         %pn", pFuncs->print);
  fprintf(stderr,"t- NPP_HandleEventProcPtr:   %pn", pFuncs->event);
  fprintf(stderr,"t- NPP_URLNotifyProcPtr:     %pn", pFuncs->urlnotify);
  fprintf(stderr,"t- javaClass:                %pn", pFuncs->javaClass);
  fprintf(stderr,"t- NPP_GetValueProcPtr:      %pn", pFuncs->getvalue);
  fprintf(stderr,"t- NPP_SetValueProcPtr:      %pn", pFuncs->setvalue);
}
NPError NPN_GetValueProc(NPP instance, NPNVariable variable, void *ret_value) {
    fprintf(stderr,"[D] NPN_GetValueProc instance:%p, variable:%d, abi_mask:%dn", instance, variable, 0);
    switch (variable) {
    case NPNVSupportsXEmbedBool:
      *((int*)ret_value)= PR_TRUE;
      break;
    //Unix and solaris fix
    case NPNVToolkit:
      *((int*)ret_value)= NPNVGtk2;
      break;
    case NPNVnetscapeWindow:
      *((int*)ret_value)= PR_TRUE;
      break;
    default:
      *((int*)ret_value)=PR_FALSE;
      break;
    }
    return NPERR_NO_ERROR;
}
const char* NPN_UserAgentProc(NPP instance) {
    fprintf(stderr,"[D] NPN_UserAgentProc instance:%pn", instance);
    return uagent;
}
NPError NPN_GetURLProc(NPP instance, const char* url, const char* window) {
    fprintf(stderr,"[D] NPN_GetURLProcPtr:%p, url: %s, window: %sn", instance, url, window);
    return NPERR_NO_ERROR;
}
NPIdentifier NPN_GetStringIdentifierProc(const NPUTF8* name) {
    return (NPIdentifier)0x41424344; //Unique
}
static 
gboolean plug_removed_cb (GtkWidget *widget, gpointer data) {
    fprintf(stderr,"[!] plug_removed_cbn");
    return TRUE;
}
static void
socket_unrealize_cb(GtkWidget *widget, gpointer data) {
    fprintf(stderr, "[!] socket_unrealize_cbn");
}

static NPWindow *
npwindow_construct (GtkWidget *widget) {
  NPWindow *npwindow;
  NPSetWindowCallbackStruct *ws_info = NULL;
  GdkWindow *parent_win = widget->window;
  GtkWidget *socketWidget = gtk_socket_new();
  gtk_widget_set_parent_window(socketWidget, parent_win);
  gtk_widget_set_uposition(socketWidget, xPosition, yPosition);
  g_signal_connect(socketWidget, "plug_removed", G_CALLBACK(plug_removed_cb), NULL);
  g_signal_connect(socketWidget, "unrealize", G_CALLBACK(socket_unrealize_cb), NULL);
  g_signal_connect(socketWidget, "destroy", G_CALLBACK(gtk_widget_destroyed), &socketWidget);

  gpointer user_data = NULL;
  gdk_window_get_user_data(parent_win, &user_data);
  GtkContainer *container = GTK_CONTAINER(user_data);
  gtk_container_add(container, socketWidget);
  gtk_widget_realize(socketWidget);
  GtkAllocation new_allocation;
  new_allocation.x = 0;
  new_allocation.y = 0;
  new_allocation.width = WINDOW_XSIZE;
  new_allocation.height = WINDOW_YSIZE;
  gtk_widget_size_allocate(socketWidget, &new_allocation);
  gtk_widget_show(socketWidget);
  gdk_flush();
  GdkNativeWindow ww = gtk_socket_get_id(GTK_SOCKET(socketWidget));
  GdkWindow *w = gdk_window_lookup(ww); 
  npwindow = malloc (sizeof (NPWindow));
  npwindow->window = (void*)(unsigned long)ww;
  npwindow->x = 0;
  npwindow->y = 0;
  npwindow->width  = WINDOW_XSIZE;
  npwindow->height = WINDOW_YSIZE;
  ws_info = malloc(sizeof (NPSetWindowCallbackStruct));
  ws_info->type = NP_SETWINDOW;
  ws_info->display = GDK_WINDOW_XDISPLAY(w);
  ws_info->colormap = GDK_COLORMAP_XCOLORMAP(gdk_drawable_get_colormap(w));
  GdkVisual* gdkVisual = gdk_drawable_get_visual(w);
  ws_info->visual = GDK_VISUAL_XVISUAL(gdkVisual);
  ws_info->depth = gdkVisual->depth;
  npwindow->ws_info = ws_info;
  npwindow->type = NPWindowTypeWindow;
  return npwindow;
}
static NPStream *
npstream_construct() {
    NPStream *stream = malloc(sizeof(NPStream));
    stream->url=fileName;
    stream->notifyData = 0x00000000;
    fprintf(stderr,"[D] NPN_StreamConstructed: %pn", stream);
    return stream;
}
bool NPN_GetPropertyProc(NPP npp, NPObject *obj, NPIdentifier propertyName, NPVariant *result) {
    fprintf(stderr,"[D] NPN_GetPropertyProc: %pn", result);
    result->type = NPVariantType_Object;
    result->value.objectValue= (NPObject*)1;
    return TRUE;
}

bool NPN_InvokeProc(NPP npp, NPObject* obj, NPIdentifier methodName, const NPVariant *args, uint32_t argCount, NPVariant *result) {
    fprintf(stderr,"[D] NPN_InvokeProc: %pn", result);
    result->type= NPVariantType_String;
    result->value.stringValue.utf8characters=fileName;
    result->value.stringValue.utf8length=strlen(fileName);
    return TRUE;
}
void NPN_ReleaseVariantValueProc(NPVariant *variant) {
}
void NPN_ReleaseObjectProc(NPObject *obj) {
}
NPObject*  NPN_CreateObjectProc(NPP npp, NPClass *aClass) {
    return (NPObject*)1;
}
NPObject*  NPN_RetainObjectProc(NPObject *obj) {
    return (NPObject*)1;
}
NPError NPN_GetURLNotifyProc(NPP instance, const char* url, const char* window, void* notifyData) {
    fprintf(stderr,"[D] NPN_GetURLNotifyProc:%p, url: %s, window: %sn", instance, url, window);
    return 0;
}
NPN_GetURL, NPN_GetURLNotify, and NPP_URLNotify
void initNPNetscapeFuncs(NPNetscapeFuncs *bFuncs) {
  int i=0;
  for(i=1; i<sizeof(*bFuncs)/sizeof(ssize_t); i++)
    *(((ssize_t*)bFuncs)+i)=i+1000;
  bFuncs->geturl=NPN_GetURLProc;
  bFuncs->getvalue=NPN_GetValueProc;
  bFuncs->uagent=NPN_UserAgentProc;
  bFuncs->getproperty=NPN_GetPropertyProc;
  bFuncs->getstringidentifier=NPN_GetStringIdentifierProc;
  bFuncs->invoke=NPN_InvokeProc;
  bFuncs->releasevariantvalue=NPN_ReleaseVariantValueProc;
  bFuncs->releaseobject=NPN_ReleaseObjectProc;
  bFuncs->createobject=NPN_CreateObjectProc;
  bFuncs->retainobject=NPN_RetainObjectProc;
  bFuncs->geturlnotify=NPN_GetURLNotifyProc;
  bFuncs->size= sizeof(bFuncs);
  bFuncs->version= (NP_VERSION_MAJOR << 8) | NP_VERSION_MINOR;;
}
static void destroy(GtkWidget *widget, gpointer data) {
    gtk_main_quit ();
}
static void checkError(const char* str, NPError err) {
  if(err == NPERR_NO_ERROR)
    fprintf(stderr, "[+] %s: successn", str);
  else
    fprintf(stderr, "[-] %s: failed (%d)n", str, err);
    fflush(NULL);
}
int main(int argc, char **argv) 
{
  int c;
  extern char *optarg;
  while ((c = getopt(argc, argv, "f:w:h:x:y:")) != EOF){
    switch (c) {
      case 'f':
        fileName = optarg;
        fprintf (stderr, "[+] Filename: %sn", optarg);
        break;
      case 'w':
        WINDOW_XSIZE = atoi(optarg);
        fprintf (stderr, "[+] WINDOW_XSIZE: %sn", optarg);
        break;
      case 'h':
        WINDOW_YSIZE = atoi(optarg);
        fprintf (stderr, "[+] WINDOW_YSIZE: %sn", optarg);
        break;
      case 'x':
        xPosition = atoi(optarg);
        fprintf (stderr, "[+] Position in x: %sn", optarg);
        break;
      case 'y':
        yPosition = atoi(optarg);
        fprintf (stderr, "[+] Position in y: %sn", optarg);
        break;
      case '?':
        if (optopt == 'f' | optopt == 'w' | optopt == 'h')
          fprintf (stderr, "[-] Option -%c requires an argument.n", optopt);
        else if (isprint (optopt))
          fprintf (stderr, "[-] Unknown option `-%c'.n", optopt);
        else
          fprintf (stderr,"[-] Unknown option character `\x%x'.n", optopt);
          exit(-1);
      default:
        fprintf(stderr,"[-] Usage: %s -f <swffile> -x <xsize> -y <ysize>n", argv[0]);
        exit(-1);
    }
  }
  gtk_init (&argc, &argv);
  main_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_widget_set_usize (main_window, WINDOW_XSIZE, WINDOW_YSIZE);
  gtk_widget_set_uposition (main_window, xPosition, yPosition);
  g_signal_connect (G_OBJECT (main_window), "destroy", G_CALLBACK (destroy), NULL);
  gtk_widget_realize(main_window);
  gtk_widget_show_all(main_window);
  fprintf(stderr,"[+] created GTK widgetn");
  flash_plugin_handle = loadFlashPluginSo();
  loadNPEntryPoints(flash_plugin_handle);
  fprintf(stderr,"[+] initialized flash plugin entry pointsn");
  initNPNetscapeFuncs(&browserFuncs);
  fprintf(stderr,"[+] initialized browser functionsn");
  checkError("NP_Initialize", iNP_Initialize(&browserFuncs, &pluginFuncs));
  printPluginEntrypoints(&pluginFuncs);
  NPWindow *npwin = npwindow_construct(main_window);
  fprintf(stderr,"[+] created NPWindow widgetn");
  NPP_t *instancep = malloc(sizeof(NPP_t));
  memset(instancep,0,sizeof(sizeof(NPP_t)));
  NPP instance     = instancep;
  NPSavedData* saved = malloc(sizeof(NPSavedData));
  memset(saved,0,sizeof(sizeof(NPSavedData)));
  stream = npstream_construct();
  uint16_t stype;
  char *xargv[]= {"quality", "bgcolor", "width", "height", "allowScriptAccess", "loop" };
  char *xargm[]= {"high", "#000000", "1360", "768", "always", "false" };

  checkError("NPN_New", pluginFuncs.newp("application/x-shockwave-flash", instance, NP_EMBED, 0, xargv, xargm, saved));
  checkError("NPN_SetWindow", pluginFuncs.setwindow(instance, npwin));
  checkError("NPN_NewStream", pluginFuncs.newstream(instance, "application/x-shockwave-flash", stream, 0,  &stype));

  FILE *pp;
  char buffer[8192];
  pp = fopen(fileName,"rb");
  int len;
  while((len=fread(buffer, 1, sizeof(buffer), pp)) != 0) {
    pluginFuncs.writeready(instance, stream);
    pluginFuncs.write(instance, stream, 0, len, buffer);
  }
  fclose(pp);
  checkError("NPN_DestroyStream",pluginFuncs.destroystream(instance, stream, NPRES_DONE));
  free(stream);
  gtk_main ();
  checkError("NPN_Destroy",pluginFuncs.destroy(instance, &saved));

  checkError("NP_Shutdown", iNP_Shutdown());
  dlclose(flash_plugin_handle);
  return 0;
}

如果我加载一个没有 xml 的 swf。它有效。当我对我的 xml 进行配置时。它停止了。

这是我得到的输出:

~/test-flash$ ./test-flash -f xml_sample.swf -w 400 -h 600 -x 15 -y 15
[+] Filename: xml_sample.swf
[+] WINDOW_XSIZE: 400
[+] WINDOW_YSIZE: 600
[+] Position in x: 15
[+] Position in y: 15
[+] created GTK widget
[+] loaded libflashplayer.so
[+] loaded symbol NP_Initialize, address: 0x7ff03fb634d0
[+] loaded symbol NP_Shutdown, address: 0x7ff03fb634c0
[+] loaded symbol NP_GetMIMEDescription, address: 0x7ff03fb63870
[+] initialized flash plugin entry points
[+] initialized browser functions
[+] NP_Initialize: success
[*] NPP struct:
        - NPP_size:                        0
        - NPP_version:                     0
        - NPP_NewProcPtr:           0x7ff03fb63990
        - NPP_DestroyProcPtr:       0x7ff03fb63980
        - NPP_SetWindowProcPtr:     0x7ff03fb63970
        - NPP_NewStreamProcPtr:     0x7ff03fb63960
        - NPP_DestroyStreamProcPtr: 0x7ff03fb63910
        - NPP_StreamAsFileProcPtr:  0x7ff03fb63920
        - NPP_WriteReadyProcPtr:    0x7ff03fb63950
        - NPP_WriteProcPtr:         0x7ff03fb63940
        - NPP_PrintProcPtr:         0x7ff03fb63900
        - NPP_HandleEventProcPtr:   0x7ff03fb638f0
        - NPP_URLNotifyProcPtr:     0x7ff03fb63930
        - javaClass:                (nil)
        - NPP_GetValueProcPtr:      0x7ff03fb63860
        - NPP_SetValueProcPtr:      (nil)
[+] created NPWindow widget
[D] NPN_StreamConstructed: 0x25ce5e0
[D] NPN_GetValueProc instance:0x25cc720, variable:14, abi_mask:0
[D] NPN_GetValueProc instance:0x25cc720, variable:268435469, abi_mask:0
[D] NPN_UserAgentProc instance:(nil)
[D] NPN_GetValueProc instance:0x25cc720, variable:15, abi_mask:0
[D] NPN_GetValueProc instance:0x25cc720, variable:15, abi_mask:0
[D] NPN_GetValueProc instance:0x25cc720, variable:18, abi_mask:0
[+] NPN_New: success
[D] NPN_GetValueProc instance:0x25cc720, variable:14, abi_mask:0
[+] NPN_SetWindow: success
[D] NPN_GetURLNotifyProc:0x25cc720, url: javascript:top.location+"__flashplugin_unique__", window: (null)
[D] NPN_GetValueProc instance:0x25cc720, variable:15, abi_mask:0
[+] NPN_NewStream: success
Lenght: 455
[D] NPN_UserAgentProc instance:0x25cc720
[+] NPN_DestroyStream: success
[D] NPN_GetURLNotifyProc:0x25cc720, url: sample.xml, window: (null)

谢谢!

编辑:

我尝试了这样的事情(代码在NPN_GetURLNotifyProc函数中(。 但是,我的应用程序冻结在我的geturlnotifyproc中...

NPStream s;
uint16 stype;
memset(&s,0,sizeof(NPStream));
s.url = strdup(url);
fprintf(stderr, "URL: %sn", s.url);
checkError("NPN_NewStream", pluginFuncs.newstream(instance,"text/html",&s,0,&stype));    
    writeStream(instance, &pluginFuncs, &s);
pluginFuncs.urlnotify(instance,url,NPRES_DONE,notifyData);
checkError("NPN_DestroyStream", pluginFuncs.destroystream(instance,&s,NPRES_DONE));
            free((void*)s.url);

我忘了将通知添加到我的流中...

NPError NPN_GetURLNotifyProc(NPP instance, const char* url, const char* target, void* notifyData) {
    fprintf(stderr,"[D] NPN_GetURLNotifyProc:%p, url: %s, window: %s, data: %pn", instance, url, target, notifyData);
    NPStream s;
    uint16 stype;
    memset(&s,0,sizeof(NPStream));
    s.url = strdup(url);
    s.notifyData = notifyData;
    fprintf(stderr, "NPP: %p URL: %sn", instance, url);
    checkError("NPN_NewStream", pluginFuncs.newstream(instance,"text/html",&s,0,&stype));    
    writeStream(instance, &pluginFuncs, &s);
    checkError("NPN_DestroyStream", pluginFuncs.destroystream(instance,&s,NPRES_DONE));
    free((void*)s.url);
    pluginFuncs.urlnotify(instance, url, NPRES_DONE, notifyData);
    return 0;
}

我现在有一个独立的 gtk 应用程序,可以运行编译的闪存 (swf(。希望它在未来对某人有所帮助。我建议做一个插件来读取另一个插件(又名嗅探器(,以实际知道调用了哪个函数("以及事情是如何工作的"(,以便有一个像样的日志文件可以使用。

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