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skia2/tools/skiaserve/skiaserve.cpp

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/*
* 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>
#include "png.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;
};
static void write_png_callback(png_structp png_ptr, png_bytep data, png_size_t length) {
SkWStream* out = (SkWStream*) png_get_io_ptr(png_ptr);
out->write(data, length);
}
static void write_png(const png_bytep rgba, png_uint_32 width, png_uint_32 height, SkWStream& out) {
png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
SkASSERT(png != nullptr);
png_infop info_ptr = png_create_info_struct(png);
SkASSERT(info_ptr != nullptr);
if (setjmp(png_jmpbuf(png))) {
SkFAIL("png encode error");
}
png_set_IHDR(png, info_ptr, width, height, 8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
png_set_compression_level(png, 1);
png_bytepp rows = (png_bytepp) sk_malloc_throw(height * sizeof(png_byte*));
png_bytep pixels = (png_bytep) sk_malloc_throw(width * height * 3);
for (png_size_t y = 0; y < height; ++y) {
const png_bytep src = rgba + y * width * 4;
rows[y] = pixels + y * width * 3;
// convert from RGBA to RGB
for (png_size_t x = 0; x < width; ++x) {
rows[y][x * 3] = src[x * 4];
rows[y][x * 3 + 1] = src[x * 4 + 1];
rows[y][x * 3 + 2] = src[x * 4 + 2];
}
}
png_set_filter(png, 0, PNG_NO_FILTERS);
png_set_rows(png, info_ptr, &rows[0]);
png_set_write_fn(png, &out, write_png_callback, NULL);
png_write_png(png, info_ptr, PNG_TRANSFORM_IDENTITY, NULL);
png_destroy_write_struct(&png, NULL);
sk_free(rows);
}
SkBitmap* getBitmapFromCanvas(SkCanvas* canvas) {
SkBitmap* bmp = new SkBitmap();
SkImageInfo info = SkImageInfo::Make(kImageWidth, kImageHeight, kRGBA_8888_SkColorType,
kOpaque_SkAlphaType);
bmp->setInfo(info);
if (!canvas->readPixels(bmp, 0, 0)) {
fprintf(stderr, "Can't read pixels\n");
return nullptr;
}
return bmp;
}
SkData* writeCanvasToPng(SkCanvas* canvas) {
// capture pixels
SkAutoTDelete<SkBitmap> bmp(getBitmapFromCanvas(canvas));
SkASSERT(bmp);
// write to png
SkDynamicMemoryWStream buffer;
write_png((const png_bytep) bmp->getPixels(), bmp->width(), bmp->height(), buffer);
return buffer.copyToData();
}
SkCanvas* getCanvasFromRequest(Request* request) {
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();
return target;
}
void drawToCanvas(Request* request, int n) {
SkCanvas* target = getCanvasFromRequest(request);
request->fDebugCanvas->drawTo(target, n);
}
SkData* drawToPng(Request* request, int n) {
drawToCanvas(request, n);
return writeCanvasToPng(getCanvasFromRequest(request));
}
SkSurface* createCPUSurface() {
SkImageInfo info = SkImageInfo::Make(kImageWidth, kImageHeight, kN32_SkColorType,
kPremul_SkAlphaType);
return SkSurface::NewRaster(info);
}
SkSurface* createGPUSurface(Request* request) {
GrContext* context = request->fContextFactory->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);
return surface;
}
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 SendError(MHD_Connection* connection, const char* msg) {
MHD_Response* response = MHD_create_response_from_buffer(strlen(msg),
(void*) msg,
MHD_RESPMEM_PERSISTENT);
int ret = MHD_queue_response(connection, 500, 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, SkCanvas* canvas, SkDebugCanvas* debugCanvas,
UrlDataManager* urlDataManager, int n) {
Json::Value root = debugCanvas->toJSON(*urlDataManager, n, canvas);
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() - 1;
} else {
sscanf(commands[1].c_str(), "%d", &n);
}
return SendJSON(connection, getCanvasFromRequest(request), 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(drawToPng(request, n));
return SendData(connection, data, "image/png");
}
};
class BreakHandler : public UrlHandler {
public:
bool canHandle(const char* method, const char* url) override {
static const char* kBasePath = "/break";
return 0 == strcmp(method, MHD_HTTP_METHOD_GET) &&
0 == strncmp(url, kBasePath, strlen(kBasePath));
}
static SkColor GetPixel(Request* request, int x, int y) {
SkCanvas* canvas = getCanvasFromRequest(request);
canvas->flush();
SkAutoTDelete<SkBitmap> bitmap(getBitmapFromCanvas(canvas));
SkASSERT(bitmap);
bitmap->lockPixels();
uint8_t* start = ((uint8_t*) bitmap->getPixels()) + (y * kImageWidth + x) * 4;
SkColor result = SkColorSetARGB(start[3], start[0], start[1], start[2]);
bitmap->unlockPixels();
return result;
}
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() != 4) {
return MHD_NO;
}
// /break/<n>/<x>/<y>
int n;
sscanf(commands[1].c_str(), "%d", &n);
int x;
sscanf(commands[2].c_str(), "%d", &x);
int y;
sscanf(commands[3].c_str(), "%d", &y);
int count = request->fDebugCanvas->getSize();
SkASSERT(n < count);
SkCanvas* canvas = getCanvasFromRequest(request);
canvas->clear(SK_ColorWHITE);
int saveCount = canvas->save();
for (int i = 0; i <= n; ++i) {
request->fDebugCanvas->getDrawCommandAt(i)->execute(canvas);
}
SkColor target = GetPixel(request, x, y);
Json::Value response(Json::objectValue);
Json::Value startColor(Json::arrayValue);
startColor.append(Json::Value(SkColorGetR(target)));
startColor.append(Json::Value(SkColorGetG(target)));
startColor.append(Json::Value(SkColorGetB(target)));
startColor.append(Json::Value(SkColorGetA(target)));
response["startColor"] = startColor;
response["endColor"] = startColor;
response["endOp"] = Json::Value(n);
for (int i = n + 1; i < n + count; ++i) {
int index = i % count;
if (index == 0) {
// reset canvas for wraparound
canvas->restoreToCount(saveCount);
canvas->clear(SK_ColorWHITE);
saveCount = canvas->save();
}
request->fDebugCanvas->getDrawCommandAt(index)->execute(canvas);
SkColor current = GetPixel(request, x, y);
if (current != target) {
Json::Value endColor(Json::arrayValue);
endColor.append(Json::Value(SkColorGetR(current)));
endColor.append(Json::Value(SkColorGetG(current)));
endColor.append(Json::Value(SkColorGetB(current)));
endColor.append(Json::Value(SkColorGetA(current)));
response["endColor"] = endColor;
response["endOp"] = Json::Value(index);
break;
}
}
canvas->restoreToCount(saveCount);
SkDynamicMemoryWStream stream;
stream.writeText(Json::FastWriter().write(response).c_str());
SkAutoTUnref<SkData> data(stream.copyToData());
return SendData(connection, data, "application/json");
}
};
/**
Updates the clip visualization alpha. On all subsequent /img requests, the clip will be drawn in
black with the specified alpha. 0 = no visible clip, 255 = fully opaque clip.
*/
class ClipAlphaHandler : public UrlHandler {
public:
bool canHandle(const char* method, const char* url) override {
static const char* kBasePath = "/clipAlpha/";
return 0 == strcmp(method, MHD_HTTP_METHOD_POST) &&
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 alpha;
sscanf(commands[1].c_str(), "%d", &alpha);
request->fDebugCanvas->setClipVizColor(SkColorSetARGB(alpha, 0, 0, 0));
return SendOK(connection);
}
};
/**
Controls whether GPU rendering is enabled. Posting to /enableGPU/1 turns GPU on, /enableGPU/0
disables it.
*/
class EnableGPUHandler : public UrlHandler {
public:
bool canHandle(const char* method, const char* url) override {
static const char* kBasePath = "/enableGPU/";
return 0 == strcmp(method, MHD_HTTP_METHOD_POST) &&
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 (commands.count() != 2) {
return MHD_NO;
}
int enable;
sscanf(commands[1].c_str(), "%d", &enable);
if (enable) {
SkSurface* surface = createGPUSurface(request);
if (surface) {
request->fSurface.reset(surface);
return SendOK(connection);
}
return SendError(connection, "Unable to create GPU surface");
}
request->fSurface.reset(createCPUSurface());
return SendOK(connection);
}
};
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;
}
// 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(createCPUSurface());
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 ClipAlphaHandler);
fHandlers.push_back(new EnableGPUHandler);
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);
fHandlers.push_back(new BreakHandler);
}
~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
// create surface
GrContextOptions grContextOpts;
request.fContextFactory.reset(new GrContextFactory(grContextOpts));
request.fSurface.reset(createCPUSurface());
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
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