Thanks for the reply Nathan but I eventually got it working. Much like how you suggested actually. As for why I want the SWF, I'm actually trying to grab the metadata out of them to display in Flashbug.
- gabriel (Developer of Flashbug) On Jun 30, 8:35 am, Nathan Mische <nmis...@gmail.com> wrote: > Hi Gabriel, > > You are correct, a SWF request is not going to implement > nsIUploadChannel. The documentation on the nsIUploadChannel interface > states: "A channel may optionally implement this interface if it > supports the notion of uploading a data stream." An AMF request POSTs > binary data in the same manner as an HTML form POSTs a file upload, > thus it "supports the notion of uploading a data stream" and you can > QI those requests to nsIUploadChannel. > > Now, why do we even need the uploadStream? If you look at how Firebug > does caching (sourceCache.js and tabCache.js) you will see it uses the > URL for the cache key. Unfortunately AMF requests typically all go to > the same endpoint (URL) so we can't use the URL as the cache key. Thus > for AMF requests we get the POSTed data and use its hash as the cache > key. > > Having said all that, I would probably just use the URL for the cache > key for SWF requests. > > As for why reading the binary data is so difficult, I wish I knew. > It's possible the C++ interfaces for reading binary data are better, > but then you would have to know C++ ;) > > Anyway, I hope that helps. May I ask why you are looking to cache SWFs > in Firebug? > > --Nathan (Developer of AMF Explorer) > > > > On Wed, Jun 23, 2010 at 8:14 AM, gmariani <gmariani...@gmail.com> wrote: > > > Yeah, i worked with him originally and got as far as i did. But this > > solution no longer seems to work which is why i'm posting on here. > > > - gabriel > > > On Jun 22, 1:13 pm, Pedro Simonetti Garcia <pedrosimone...@gmail.com> > > wrote: > > > Do you know about Firebug "AMF Explorer" > > > extension?https://addons.mozilla.org/en-US/firefox/addon/78928/ > > > > I don't know how AMF works, but maybe the developer > > > of "AMF Explorer" extension know what you are trying > > > to accomplish. > > > > regards, > > > > Pedro Simonetti. > > > > 2010/6/22 gmariani <gmariani...@gmail.com>: > > > > > How do you grab the actual binary data for an item loaded? I want to > > > > parse through a SWF that is loaded from a given site. > > > > > Previously I had trouble grabbing the binary data of a network > > > > response (AMF) and got that working. Although I'm still not sure *how* > > > > it works, just that it does, more on that later. I tried to use the > > > > same method there to grab the SWF data with no success. > > > > > I have a (TabCacheModel) CacheListener setup to tell Firebug to cache > > > > both AMF and SWF requests. It creates a cache key, stores it for > > > > later. Then for the (NetMonitor) NetListener.onResponseBody, it gets a > > > > response stream from the cache using that cache key. Once I have the > > > > response stream, when a user goes to view the tab added to the Net > > > > panel it creates a nsISeekableStream. With that I parse and display > > > > the AMF data. > > > > > When I try to do this to grab the SWF data this is what happens. At > > > > CacheListener.onDataAvailable, it goes to retrieve the cache key based > > > > on the request. > > > > > function getCacheKey(request) { > > > > var uploadStream = > > > > request.QueryInterface(Ci.nsIUploadChannel).uploadStream; > > > > > var seekableStream = > > > > uploadStream.QueryInterface(Ci.nsISeekableStream); > > > > seekableStream.seek(NS_SEEK_SET, 0); > > > > > var ch = Cc["@mozilla.org/security/hash; > > > > 1"].createInstance(Ci.nsICryptoHash); > > > > ch.init(ch.MD5); > > > > ch.updateFromStream(seekableStream, seekableStream.available()); > > > > > return ch.finish(true); > > > > }; > > > > > But for the SWFs, uploadStream is null and it explodes. Does it matter > > > > that the SWF is a file and not part of the request? Is that why this > > > > approach is failing? How can I fix this so it doesn't hate life. > > > > > *gripe start* > > > > Getting back to how I think this whole setup is a bit of black magic. > > > > The method just to retrieve the binary data of a response seems really > > > > complicated. You have to register a TabCacheModel and NetMonitor > > > > listener. The cache listener tells Firebug to cache certain things. > > > > Then when you get the actual data you have to jump through a ton of > > > > hoops to save that data. > > > > > onDataAvailable: function(context, request, requestContext, > > > > inputStream, offset, count) { > > > > if (isAmfRequest(request) || isSwfRequest(request)) { > > > > //try { > > > > var cacheKey = getCacheKey(request); > > > > > if (!cacheKey) return; > > > > > if (!this.cache[cacheKey]) { > > > > this.cache[cacheKey] = { > > > > storageStream: > > > > Cc["@mozilla.org/storagestream; > > > > 1"].createInstance(Ci.nsIStorageStream), > > > > outputStream: > > > > Cc["@mozilla.org/binaryoutputstream; > > > > 1"].createInstance(Ci.nsIBinaryOutputStream) > > > > }; > > > > > > > > > this.cache[cacheKey].storageStream.init(8192, PR_UINT32_MAX, > > > > null); > > > > > this.cache[cacheKey].outputStream.setOutputStream(this.cache[cacheKey].stor > > > > ageStream.getOutputStream(0)); > > > > } > > > > > var binaryInputStream = > > > > Cc["@mozilla.org/binaryinputstream; > > > > 1"].createInstance(Ci.nsIBinaryInputStream); > > > > > > > > binaryInputStream.setInputStream(inputStream.value); > > > > > var listenerStorageStream = > > > > Cc["@mozilla.org/storagestream; > > > > 1"].createInstance(Ci.nsIStorageStream); > > > > listenerStorageStream.init(8192, count, null); > > > > > var listenerOutputStream = > > > > Cc["@mozilla.org/binaryoutputstream; > > > > 1"].createInstance(Ci.nsIBinaryOutputStream); > > > > > listenerOutputStream.setOutputStream(listenerStorageStream.getOutputStream( > > > > 0)); > > > > > var data = > > > > binaryInputStream.readByteArray(count); > > > > listenerOutputStream.writeByteArray(data, count); > > > > > > > > this.cache[cacheKey].outputStream.writeByteArray(data, count); > > > > > var response = this.getResponse(request, > > > > cacheKey); > > > > response.size += count; > > > > > // Let other listeners use the stream. > > > > inputStream.value = > > > > listenerStorageStream.newInputStream(0); > > > > /*} catch (e) { > > > > ERROR(e); > > > > }*/ > > > > } > > > > }, > > > > > Then the net listener goes into action at onResponseBody to save this > > > > stream you created and assign it to the file that has the request > > > > object. > > > > > THEN when you're finally ready to display your information, you have > > > > to do a little bit more magic to turn that stream into something you > > > > can actually read. > > > > > var is = file.responseStream; > > > > if (is) { > > > > var ss = is.QueryInterface(Ci.nsISeekableStream); > > > > if (ss) { > > > > ss.seek(NS_SEEK_SET, 0); > > > > > // Finally have a readable stream! > > > > } > > > > } > > > > > Am I doing something wrong here or is that actually the only way to > > > > get binary data? > > > > *end gripe* > > > > > - gabriel > > > > > -- > > > > You received this message because you are subscribed to the Google > > > > Groups "Firebug" group. > > > > To post to this group, send email to fire...@googlegroups.com. > > > > To unsubscribe from this group, send email to > > > > firebug+unsubscr...@googlegroups.com. > > > > For more options, visit this group > > > > athttp://groups.google.com/group/firebug?hl=en. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Firebug" group. > > To post to this group, send email to fire...@googlegroups.com. > > To unsubscribe from this group, send email to > > firebug+unsubscr...@googlegroups.com. > > For more options, visit this group > > athttp://groups.google.com/group/firebug?hl=en. -- You received this message because you are subscribed to the Google Groups "Firebug" group. 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