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Hugh Sanderson
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Sep 18, 2024
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Original file line number | Diff line number | Diff line change |
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#include <URL.h> | ||
#include <Utils.h> | ||
#include <map> | ||
#include <string> | ||
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#include "emscripten.h" | ||
#include "emscripten/fetch.h" | ||
#include <sys/stat.h> | ||
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namespace nme | ||
{ | ||
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static int sgAvtiveCount = 0; | ||
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static void onsuccess(struct emscripten_fetch_t *fetch); | ||
static void onerror(struct emscripten_fetch_t *fetch); | ||
static void onprogress(struct emscripten_fetch_t *fetch); | ||
static void onreadystatechange(struct emscripten_fetch_t *fetch); | ||
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static const bool allowUserAgent = false; | ||
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class CurlFetch : public URLLoader | ||
{ | ||
emscripten_fetch_t *fetch; | ||
URLState state; | ||
ByteArray data; | ||
std::string err; | ||
int status; | ||
std::vector<char> postData; | ||
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public: | ||
CurlFetch(URLRequest &request) | ||
{ | ||
state = urlInit; | ||
status = 400; | ||
fetch = nullptr; | ||
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emscripten_fetch_attr_t attr; | ||
emscripten_fetch_attr_init(&attr); | ||
attr.userData = this; | ||
attr.onsuccess = onsuccess; | ||
attr.onprogress = onprogress; | ||
attr.onerror = onerror; | ||
attr.onreadystatechange = onreadystatechange; | ||
attr.attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY; | ||
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strcpy(attr.requestMethod, request.method); | ||
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if (request.postData.Size()>0) | ||
{ | ||
postData.resize(request.postData.Size()); | ||
memcpy(&postData[0],request.postData.Bytes(), request.postData.Size()); | ||
attr.requestData = &postData[0]; | ||
attr.requestDataSize = postData.size(); | ||
} | ||
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std::string user; | ||
std::string pass; | ||
if (request.credentials && request.credentials[0]) | ||
{ | ||
std::string creds(request.credentials); | ||
auto col = creds.find(":"); | ||
if (col!=std::string::npos) | ||
{ | ||
user = creds.substr(0,col); | ||
pass = creds.substr(col+1); | ||
attr.userName = user.c_str(); | ||
attr.password = pass.c_str(); | ||
} | ||
} | ||
std::vector<const char *> allHeaders; | ||
bool seenCookie = false; | ||
bool seenAgent = false; | ||
bool seenContent = false; | ||
for(int i=0;i<request.headers.size();i++) | ||
{ | ||
URLRequestHeader &h = request.headers[i]; | ||
const char *value = h.value; | ||
if (!strcmp(h.name,"User-Agent")) | ||
{ | ||
if (allowUserAgent) | ||
{ | ||
seenAgent = true; | ||
if (request.userAgent && request.userAgent[0]) | ||
value = request.userAgent; | ||
} | ||
} | ||
else if (!strcmp(h.name,"Cookie")) | ||
{ | ||
seenCookie = true; | ||
if (request.cookies && request.cookies[0]) | ||
value = request.cookies; | ||
} | ||
else if (!strcmp(h.name,"Content-Type")) | ||
{ | ||
seenContent = true; | ||
if (request.contentType && request.contentType[0]) | ||
value = request.contentType; | ||
} | ||
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allHeaders.push_back(h.name); | ||
allHeaders.push_back(value); | ||
} | ||
if (allowUserAgent && !seenAgent && request.userAgent && request.userAgent[0]) | ||
{ | ||
allHeaders.push_back("User-Agent"); | ||
allHeaders.push_back(request.userAgent); | ||
} | ||
if (!seenCookie && request.cookies && request.cookies[0]) | ||
{ | ||
allHeaders.push_back("Cookie"); | ||
allHeaders.push_back(request.cookies); | ||
} | ||
if (!seenContent && request.contentType && request.contentType[0]) | ||
{ | ||
allHeaders.push_back("Content-Type"); | ||
allHeaders.push_back(request.contentType); | ||
} | ||
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if (allHeaders.size()) | ||
{ | ||
allHeaders.push_back(nullptr); | ||
attr.requestHeaders = &allHeaders[0]; | ||
} | ||
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fetch = emscripten_fetch(&attr, request.url); | ||
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state = urlLoading; | ||
} | ||
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~CurlFetch() | ||
{ | ||
close(); | ||
} | ||
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void onSuccess() | ||
{ | ||
if (fetch) | ||
{ | ||
int len = (int)fetch->numBytes; | ||
if (len) | ||
{ | ||
data = ByteArray(len); | ||
memcpy(data.Bytes(), fetch->data, len); | ||
} | ||
status = fetch->status; | ||
} | ||
state = urlComplete; | ||
} | ||
void onError() | ||
{ | ||
if (fetch) | ||
{ | ||
status = fetch->status; | ||
err = fetch->statusText; | ||
} | ||
close(); | ||
state = urlError; | ||
} | ||
void onProgress() { } | ||
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void onReadyStateChanged() | ||
{ | ||
} | ||
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void close() | ||
{ | ||
if (fetch) | ||
{ | ||
emscripten_fetch_close(fetch); | ||
fetch = nullptr; | ||
} | ||
} | ||
URLState getState() | ||
{ | ||
return state; | ||
} | ||
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int bytesLoaded() | ||
{ | ||
if (fetch) | ||
return (int)fetch->dataOffset; | ||
return 0; | ||
} | ||
int bytesTotal() | ||
{ | ||
if (fetch) | ||
return (int)fetch->totalBytes; | ||
return 0; | ||
} | ||
int getHttpCode() | ||
{ | ||
return status; | ||
} | ||
const char *getErrorMessage() | ||
{ | ||
return err.c_str(); | ||
} | ||
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ByteArray releaseData() | ||
{ | ||
return data; | ||
} | ||
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void getCookies( std::vector<std::string> &outCookies ) | ||
{ | ||
} | ||
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void getResponseHeaders( std::vector<std::string> &outHeaders ) | ||
{ | ||
if (fetch) | ||
{ | ||
size_t len = emscripten_fetch_get_response_headers_length(fetch); | ||
if (len) | ||
{ | ||
std::vector<char> buf(len); | ||
emscripten_fetch_get_response_headers(fetch, &buf[0], len); | ||
char **headers = emscripten_fetch_unpack_response_headers(&buf[0]); | ||
std::string sep(": "); | ||
for(char **h = headers; *h; h+=2) | ||
outHeaders.push_back( h[0] + sep + h[1] ); | ||
emscripten_fetch_free_unpacked_response_headers(headers); | ||
} | ||
} | ||
} | ||
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}; | ||
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static void onsuccess(struct emscripten_fetch_t *fetch) { | ||
((CurlFetch *)fetch->userData)->onSuccess(); | ||
} | ||
static void onerror(struct emscripten_fetch_t *fetch) { | ||
((CurlFetch *)fetch->userData)->onError(); | ||
} | ||
static void onprogress(struct emscripten_fetch_t *fetch) { | ||
((CurlFetch *)fetch->userData)->onProgress(); | ||
} | ||
static void onreadystatechange(struct emscripten_fetch_t *fetch) { | ||
((CurlFetch *)fetch->userData)->onReadyStateChanged(); | ||
} | ||
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URLLoader *URLLoader::create(URLRequest &inRequest) | ||
{ | ||
return new CurlFetch(inRequest); | ||
} | ||
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bool URLLoader::processAll() | ||
{ | ||
return sgAvtiveCount > 0; | ||
} | ||
void URLLoader::initialize(const char *inCACertFilePath) | ||
{ | ||
} | ||
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} // End namespace nme |
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