| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrCaps.h" |
| #include "GrContextFactory.h" |
| #include "SkCanvas.h" |
| #include "SkCommandLineFlags.h" |
| #include "SkDebugCanvas.h" |
| #include "SkJSONCanvas.h" |
| #include "SkJSONCPP.h" |
| #include "SkPicture.h" |
| #include "SkPictureRecorder.h" |
| #include "SkPixelSerializer.h" |
| #include "SkStream.h" |
| #include "SkSurface.h" |
| |
| #include "UrlDataManager.h" |
| |
| #include <sys/socket.h> |
| #include <microhttpd.h> |
| |
| // To get image decoders linked in we have to do the below magic |
| #include "SkForceLinking.h" |
| #include "SkImageDecoder.h" |
| __SK_FORCE_IMAGE_DECODER_LINKING; |
| |
| DEFINE_string(source, "https://debugger.skia.org", "Where to load the web UI from."); |
| DEFINE_string(faviconDir, "tools/skiaserve", "The directory of the favicon"); |
| DEFINE_int32(port, 8888, "The port to listen on."); |
| |
| // TODO probably want to make this configurable |
| static const int kImageWidth = 1920; |
| static const int kImageHeight = 1080; |
| |
| // TODO move to template file |
| SkString generateTemplate(SkString source) { |
| SkString debuggerTemplate; |
| debuggerTemplate.appendf( |
| "<!DOCTYPE html>\n" |
| "<html>\n" |
| "<head>\n" |
| " <title>SkDebugger</title>\n" |
| " <meta charset=\"utf-8\" />\n" |
| " <meta http-equiv=\"X-UA-Compatible\" content=\"IE=egde,chrome=1\">\n" |
| " <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n" |
| " <script src=\"%s/res/js/core.js\" type=\"text/javascript\" charset=\"utf-8\"></script>\n" |
| " <link href=\"%s/res/vul/elements.html\" rel=\"import\" />\n" |
| "</head>\n" |
| "<body class=\"fullbleed layout vertical\">\n" |
| " <debugger-app-sk>This is the app." |
| " </debugger-app-sk>\n" |
| "</body>\n" |
| "</html>", source.c_str(), source.c_str()); |
| return debuggerTemplate; |
| |
| } |
| |
| struct UploadContext { |
| SkDynamicMemoryWStream fStream; |
| MHD_PostProcessor* fPostProcessor; |
| MHD_Connection* connection; |
| }; |
| |
| struct Request { |
| Request(SkString rootUrl) : fUploadContext(nullptr), fUrlDataManager(rootUrl) {} |
| UploadContext* fUploadContext; |
| SkAutoTUnref<SkPicture> fPicture; |
| SkAutoTUnref<SkDebugCanvas> fDebugCanvas; |
| SkAutoTDelete<GrContextFactory> fContextFactory; |
| SkAutoTUnref<SkSurface> fSurface; |
| UrlDataManager fUrlDataManager; |
| }; |
| |
| // TODO factor this out into functions, also handle CPU path |
| SkSurface* setupSurface(GrContextFactory* factory) { |
| GrContext* context = factory->get(GrContextFactory::kNative_GLContextType, |
| GrContextFactory::kNone_GLContextOptions); |
| int maxRTSize = context->caps()->maxRenderTargetSize(); |
| SkImageInfo info = SkImageInfo::Make(SkTMin(kImageWidth, maxRTSize), |
| SkTMin(kImageHeight, maxRTSize), |
| kN32_SkColorType, kPremul_SkAlphaType); |
| uint32_t flags = 0; |
| SkSurfaceProps props(flags, SkSurfaceProps::kLegacyFontHost_InitType); |
| SkSurface* surface = SkSurface::NewRenderTarget(context, SkSurface::kNo_Budgeted, info, 0, |
| &props); |
| SkASSERT(surface); |
| |
| return surface; |
| } |
| |
| SkData* writeCanvasToPng(SkCanvas* canvas) { |
| // capture pixels |
| SkBitmap bmp; |
| bmp.setInfo(canvas->imageInfo()); |
| if (!canvas->readPixels(&bmp, 0, 0)) { |
| fprintf(stderr, "Can't read pixels\n"); |
| return nullptr; |
| } |
| |
| // write to png |
| // TODO encoding to png can be quite slow, we should investigate bmp |
| SkData* png = SkImageEncoder::EncodeData(bmp, SkImageEncoder::kPNG_Type, 100); |
| if (!png) { |
| fprintf(stderr, "Can't encode to png\n"); |
| return nullptr; |
| } |
| return png; |
| } |
| |
| SkData* setupAndDrawToCanvasReturnPng(Request* request, int n) { |
| GrContextFactory* factory = request->fContextFactory; |
| SkGLContext* gl = factory->getContextInfo(GrContextFactory::kNative_GLContextType, |
| GrContextFactory::kNone_GLContextOptions).fGLContext; |
| gl->makeCurrent(); |
| SkASSERT(request->fDebugCanvas); |
| SkCanvas* target = request->fSurface->getCanvas(); |
| request->fDebugCanvas->drawTo(target, n); |
| return writeCanvasToPng(target); |
| } |
| |
| SkSurface* setupCpuSurface() { |
| SkImageInfo info = SkImageInfo::Make(kImageWidth, kImageHeight, kN32_SkColorType, |
| kPremul_SkAlphaType); |
| return SkSurface::NewRaster(info); |
| } |
| |
| static const size_t kBufferSize = 1024; |
| |
| static int process_upload_data(void* cls, enum MHD_ValueKind kind, |
| const char* key, const char* filename, |
| const char* content_type, const char* transfer_encoding, |
| const char* data, uint64_t off, size_t size) { |
| struct UploadContext* uc = reinterpret_cast<UploadContext*>(cls); |
| |
| if (0 != size) { |
| uc->fStream.write(data, size); |
| } |
| return MHD_YES; |
| } |
| |
| // SendOK just sends an empty response with a 200 OK status code. |
| static int SendOK(MHD_Connection* connection) { |
| const char* data = ""; |
| |
| MHD_Response* response = MHD_create_response_from_buffer(strlen(data), |
| (void*)data, |
| MHD_RESPMEM_PERSISTENT); |
| int ret = MHD_queue_response(connection, 200, response); |
| MHD_destroy_response(response); |
| return ret; |
| } |
| |
| static int SendData(MHD_Connection* connection, const SkData* data, const char* type, |
| bool setContentDisposition = false, const char* dispositionString = nullptr) { |
| MHD_Response* response = MHD_create_response_from_buffer(data->size(), |
| const_cast<void*>(data->data()), |
| MHD_RESPMEM_MUST_COPY); |
| MHD_add_response_header(response, "Content-Type", type); |
| |
| if (setContentDisposition) { |
| MHD_add_response_header(response, "Content-Disposition", dispositionString); |
| } |
| |
| int ret = MHD_queue_response(connection, MHD_HTTP_OK, response); |
| MHD_destroy_response(response); |
| return ret; |
| } |
| |
| static int SendJSON(MHD_Connection* connection, SkDebugCanvas* debugCanvas, |
| UrlDataManager* urlDataManager, int n) { |
| Json::Value root = debugCanvas->toJSON(*urlDataManager, n); |
| SkDynamicMemoryWStream stream; |
| stream.writeText(Json::FastWriter().write(root).c_str()); |
| |
| SkAutoTUnref<SkData> data(stream.copyToData()); |
| return SendData(connection, data, "application/json"); |
| } |
| |
| static int SendTemplate(MHD_Connection* connection, bool redirect = false, |
| const char* redirectUrl = nullptr) { |
| SkString debuggerTemplate = generateTemplate(SkString(FLAGS_source[0])); |
| |
| MHD_Response* response = MHD_create_response_from_buffer( |
| debuggerTemplate.size(), |
| (void*) const_cast<char*>(debuggerTemplate.c_str()), |
| MHD_RESPMEM_MUST_COPY); |
| MHD_add_response_header (response, "Access-Control-Allow-Origin", "*"); |
| |
| int status = MHD_HTTP_OK; |
| |
| if (redirect) { |
| MHD_add_response_header (response, "Location", redirectUrl); |
| status = MHD_HTTP_SEE_OTHER; |
| } |
| |
| int ret = MHD_queue_response(connection, status, response); |
| MHD_destroy_response(response); |
| return ret; |
| } |
| |
| class UrlHandler { |
| public: |
| virtual ~UrlHandler() {} |
| virtual bool canHandle(const char* method, const char* url) = 0; |
| virtual int handle(Request* request, MHD_Connection* connection, |
| const char* url, const char* method, |
| const char* upload_data, size_t* upload_data_size) = 0; |
| }; |
| |
| class CmdHandler : public UrlHandler { |
| public: |
| bool canHandle(const char* method, const char* url) override { |
| const char* kBasePath = "/cmd"; |
| return 0 == strncmp(url, kBasePath, strlen(kBasePath)); |
| } |
| |
| int handle(Request* request, MHD_Connection* connection, |
| const char* url, const char* method, |
| const char* upload_data, size_t* upload_data_size) override { |
| SkTArray<SkString> commands; |
| SkStrSplit(url, "/", &commands); |
| |
| if (!request->fPicture.get() || commands.count() > 3) { |
| return MHD_NO; |
| } |
| |
| // /cmd or /cmd/N |
| if (0 == strcmp(method, MHD_HTTP_METHOD_GET)) { |
| int n; |
| if (commands.count() == 1) { |
| n = request->fDebugCanvas->getSize(); |
| } else { |
| sscanf(commands[1].c_str(), "%d", &n); |
| } |
| return SendJSON(connection, request->fDebugCanvas, &request->fUrlDataManager, n); |
| } |
| |
| // /cmd/N, for now only delete supported |
| if (commands.count() == 2 && 0 == strcmp(method, MHD_HTTP_METHOD_DELETE)) { |
| int n; |
| sscanf(commands[1].c_str(), "%d", &n); |
| request->fDebugCanvas->deleteDrawCommandAt(n); |
| return SendOK(connection); |
| } |
| |
| // /cmd/N/[0|1] |
| if (commands.count() == 3 && 0 == strcmp(method, MHD_HTTP_METHOD_POST)) { |
| int n, toggle; |
| sscanf(commands[1].c_str(), "%d", &n); |
| sscanf(commands[2].c_str(), "%d", &toggle); |
| request->fDebugCanvas->toggleCommand(n, toggle); |
| return SendOK(connection); |
| } |
| |
| return MHD_NO; |
| } |
| }; |
| |
| class ImgHandler : public UrlHandler { |
| public: |
| bool canHandle(const char* method, const char* url) override { |
| static const char* kBasePath = "/img"; |
| return 0 == strcmp(method, MHD_HTTP_METHOD_GET) && |
| 0 == strncmp(url, kBasePath, strlen(kBasePath)); |
| } |
| |
| int handle(Request* request, MHD_Connection* connection, |
| const char* url, const char* method, |
| const char* upload_data, size_t* upload_data_size) override { |
| SkTArray<SkString> commands; |
| SkStrSplit(url, "/", &commands); |
| |
| if (!request->fPicture.get() || commands.count() > 2) { |
| return MHD_NO; |
| } |
| |
| int n; |
| // /img or /img/N |
| if (commands.count() == 1) { |
| n = request->fDebugCanvas->getSize() - 1; |
| } else { |
| sscanf(commands[1].c_str(), "%d", &n); |
| } |
| |
| SkAutoTUnref<SkData> data(setupAndDrawToCanvasReturnPng(request, n)); |
| return SendData(connection, data, "image/png"); |
| } |
| }; |
| |
| class PostHandler : public UrlHandler { |
| public: |
| bool canHandle(const char* method, const char* url) override { |
| return 0 == strcmp(method, MHD_HTTP_METHOD_POST) && |
| 0 == strcmp(url, "/new"); |
| } |
| |
| int handle(Request* request, MHD_Connection* connection, |
| const char* url, const char* method, |
| const char* upload_data, size_t* upload_data_size) override { |
| UploadContext* uc = request->fUploadContext; |
| |
| // New connection |
| if (!uc) { |
| // TODO make this a method on request |
| uc = new UploadContext; |
| uc->connection = connection; |
| uc->fPostProcessor = MHD_create_post_processor(connection, kBufferSize, |
| &process_upload_data, uc); |
| SkASSERT(uc->fPostProcessor); |
| |
| request->fUploadContext = uc; |
| return MHD_YES; |
| } |
| |
| // in process upload |
| if (0 != *upload_data_size) { |
| SkASSERT(uc->fPostProcessor); |
| MHD_post_process(uc->fPostProcessor, upload_data, *upload_data_size); |
| *upload_data_size = 0; |
| return MHD_YES; |
| } |
| |
| // end of upload |
| MHD_destroy_post_processor(uc->fPostProcessor); |
| uc->fPostProcessor = nullptr; |
| |
| // parse picture from stream |
| request->fPicture.reset( |
| SkPicture::CreateFromStream(request->fUploadContext->fStream.detachAsStream())); |
| if (!request->fPicture.get()) { |
| fprintf(stderr, "Could not create picture from stream.\n"); |
| return MHD_NO; |
| } |
| |
| // create surface |
| GrContextOptions grContextOpts; |
| request->fContextFactory.reset(new GrContextFactory(grContextOpts)); |
| request->fSurface.reset(setupSurface(request->fContextFactory.get())); |
| |
| // pour picture into debug canvas |
| request->fDebugCanvas.reset(new SkDebugCanvas(kImageWidth, kImageHeight)); |
| request->fDebugCanvas->drawPicture(request->fPicture); |
| |
| // clear upload context |
| delete request->fUploadContext; |
| request->fUploadContext = nullptr; |
| |
| return SendTemplate(connection, true, "/"); |
| } |
| }; |
| |
| class DownloadHandler : public UrlHandler { |
| public: |
| bool canHandle(const char* method, const char* url) override { |
| return 0 == strcmp(method, MHD_HTTP_METHOD_GET) && |
| 0 == strcmp(url, "/download"); |
| } |
| |
| int handle(Request* request, MHD_Connection* connection, |
| const char* url, const char* method, |
| const char* upload_data, size_t* upload_data_size) override { |
| if (!request->fPicture.get()) { |
| return MHD_NO; |
| } |
| |
| // TODO move to a function |
| // Playback into picture recorder |
| SkPictureRecorder recorder; |
| SkCanvas* canvas = recorder.beginRecording(kImageWidth, kImageHeight); |
| |
| request->fDebugCanvas->draw(canvas); |
| |
| SkAutoTUnref<SkPicture> picture(recorder.endRecording()); |
| |
| SkDynamicMemoryWStream outStream; |
| |
| SkAutoTUnref<SkPixelSerializer> serializer(SkImageEncoder::CreatePixelSerializer()); |
| picture->serialize(&outStream, serializer); |
| |
| SkAutoTUnref<SkData> data(outStream.copyToData()); |
| |
| // TODO fancier name handling |
| return SendData(connection, data, "application/octet-stream", true, |
| "attachment; filename=something.skp;"); |
| } |
| }; |
| |
| class InfoHandler : public UrlHandler { |
| public: |
| bool canHandle(const char* method, const char* url) override { |
| const char* kBaseName = "/info"; |
| return 0 == strcmp(method, MHD_HTTP_METHOD_GET) && |
| 0 == strncmp(url, kBaseName, strlen(kBaseName)); |
| } |
| |
| int handle(Request* request, MHD_Connection* connection, |
| const char* url, const char* method, |
| const char* upload_data, size_t* upload_data_size) override { |
| SkTArray<SkString> commands; |
| SkStrSplit(url, "/", &commands); |
| |
| if (!request->fPicture.get() || commands.count() > 2) { |
| return MHD_NO; |
| } |
| |
| // drawTo |
| SkAutoTUnref<SkSurface> surface(setupCpuSurface()); |
| SkCanvas* canvas = surface->getCanvas(); |
| |
| int n; |
| // /info or /info/N |
| if (commands.count() == 1) { |
| n = request->fDebugCanvas->getSize() - 1; |
| } else { |
| sscanf(commands[1].c_str(), "%d", &n); |
| } |
| |
| // TODO this is really slow and we should cache the matrix and clip |
| request->fDebugCanvas->drawTo(canvas, n); |
| |
| // make some json |
| SkMatrix vm = request->fDebugCanvas->getCurrentMatrix(); |
| SkIRect clip = request->fDebugCanvas->getCurrentClip(); |
| Json::Value info(Json::objectValue); |
| info["ViewMatrix"] = SkJSONCanvas::MakeMatrix(vm); |
| info["ClipRect"] = SkJSONCanvas::MakeIRect(clip); |
| |
| std::string json = Json::FastWriter().write(info); |
| |
| // We don't want the null terminator so strlen is correct |
| SkAutoTUnref<SkData> data(SkData::NewWithCopy(json.c_str(), strlen(json.c_str()))); |
| return SendData(connection, data, "application/json"); |
| } |
| }; |
| |
| class DataHandler : public UrlHandler { |
| public: |
| bool canHandle(const char* method, const char* url) override { |
| static const char* kBaseUrl = "/data"; |
| return 0 == strcmp(method, MHD_HTTP_METHOD_GET) && |
| 0 == strncmp(url, kBaseUrl, strlen(kBaseUrl)); |
| } |
| |
| int handle(Request* request, MHD_Connection* connection, |
| const char* url, const char* method, |
| const char* upload_data, size_t* upload_data_size) override { |
| SkTArray<SkString> commands; |
| SkStrSplit(url, "/", &commands); |
| |
| if (!request->fPicture.get() || commands.count() != 2) { |
| return MHD_NO; |
| } |
| |
| SkAutoTUnref<UrlDataManager::UrlData> urlData( |
| SkRef(request->fUrlDataManager.getDataFromUrl(SkString(url)))); |
| |
| if (urlData) { |
| return SendData(connection, urlData->fData.get(), urlData->fContentType.c_str()); |
| } |
| return MHD_NO; |
| } |
| }; |
| |
| class FaviconHandler : public UrlHandler { |
| public: |
| bool canHandle(const char* method, const char* url) override { |
| return 0 == strcmp(method, MHD_HTTP_METHOD_GET) && |
| 0 == strcmp(url, "/favicon.ico"); |
| } |
| |
| int handle(Request* request, MHD_Connection* connection, |
| const char* url, const char* method, |
| const char* upload_data, size_t* upload_data_size) override { |
| SkString dir(FLAGS_faviconDir[0]); |
| dir.append("/favicon.ico"); |
| FILE* ico = fopen(dir.c_str(), "r"); |
| |
| SkAutoTUnref<SkData> data(SkData::NewFromFILE(ico)); |
| int ret = SendData(connection, data, "image/vnd.microsoft.icon"); |
| fclose(ico); |
| return ret; |
| } |
| }; |
| |
| |
| class RootHandler : public UrlHandler { |
| public: |
| bool canHandle(const char* method, const char* url) override { |
| return 0 == strcmp(method, MHD_HTTP_METHOD_GET) && |
| 0 == strcmp(url, "/"); |
| } |
| |
| int handle(Request* request, MHD_Connection* connection, |
| const char* url, const char* method, |
| const char* upload_data, size_t* upload_data_size) override { |
| return SendTemplate(connection); |
| } |
| }; |
| |
| class UrlManager { |
| public: |
| UrlManager() { |
| // Register handlers |
| fHandlers.push_back(new RootHandler); |
| fHandlers.push_back(new PostHandler); |
| fHandlers.push_back(new ImgHandler); |
| fHandlers.push_back(new CmdHandler); |
| fHandlers.push_back(new InfoHandler); |
| fHandlers.push_back(new DownloadHandler); |
| fHandlers.push_back(new DataHandler); |
| fHandlers.push_back(new FaviconHandler); |
| } |
| |
| ~UrlManager() { |
| for (int i = 0; i < fHandlers.count(); i++) { delete fHandlers[i]; } |
| } |
| |
| // This is clearly not efficient for a large number of urls and handlers |
| int invoke(Request* request, MHD_Connection* connection, const char* url, const char* method, |
| const char* upload_data, size_t* upload_data_size) const { |
| for (int i = 0; i < fHandlers.count(); i++) { |
| if (fHandlers[i]->canHandle(method, url)) { |
| return fHandlers[i]->handle(request, connection, url, method, upload_data, |
| upload_data_size); |
| } |
| } |
| return MHD_NO; |
| } |
| |
| private: |
| SkTArray<UrlHandler*> fHandlers; |
| }; |
| |
| const UrlManager kUrlManager; |
| |
| int answer_to_connection(void* cls, struct MHD_Connection* connection, |
| const char* url, const char* method, const char* version, |
| const char* upload_data, size_t* upload_data_size, |
| void** con_cls) { |
| SkDebugf("New %s request for %s using version %s\n", method, url, version); |
| |
| Request* request = reinterpret_cast<Request*>(cls); |
| int result = kUrlManager.invoke(request, connection, url, method, upload_data, |
| upload_data_size); |
| if (MHD_NO == result) { |
| fprintf(stderr, "Invalid method and / or url: %s %s\n", method, url); |
| } |
| return result; |
| } |
| |
| int skiaserve_main() { |
| Request request(SkString("/data")); // This simple server has one request |
| struct MHD_Daemon* daemon; |
| // TODO Add option to bind this strictly to an address, e.g. localhost, for security. |
| daemon = MHD_start_daemon(MHD_USE_SELECT_INTERNALLY, FLAGS_port, nullptr, nullptr, |
| &answer_to_connection, &request, |
| MHD_OPTION_END); |
| if (NULL == daemon) { |
| return 1; |
| } |
| |
| getchar(); |
| MHD_stop_daemon(daemon); |
| return 0; |
| } |
| |
| #if !defined SK_BUILD_FOR_IOS |
| int main(int argc, char** argv) { |
| SkCommandLineFlags::Parse(argc, argv); |
| return skiaserve_main(); |
| } |
| #endif |