bool SampleService::sendm3u(BtpAction* action, DynamicObject& fileInfos)
{
bool rval = true;
// build m3u file
string content;
content.append("#EXTM3U\n");
// create play list
char temp[22];
FileInfoIterator i = fileInfos.getIterator();
while(i->hasNext())
{
FileInfo& fi = i->next();
Media& media = fi["media"];
int sampleLength =
media["sampleRange"][1]->getUInt32() -
media["sampleRange"][0]->getUInt32();
snprintf(temp, 22, "%u", (sampleLength < 0 ? 0 : sampleLength));
string artist;
if(media["contributors"]->hasMember("Performer"))
{
artist = media["contributors"]["Performer"][0]["name"]->getString();
}
else if(media["contributors"]->hasMember("Artist"))
{
artist = media["contributors"]["Artist"][0]["name"]->getString();
}
content.append("#EXTINF:");
content.append(temp);
content.push_back(',');
content.append(artist);
content.append(" - ");
content.append(media["title"]->getString());
content.push_back('\n');
// FIXME: get host from configuration or something
// needs to be public IP that remote side can access
DynamicObject vars;
action->getResourceQuery(vars);
if(!vars->hasMember("nodeuser"))
{
BM_ID_SET(vars["nodeuser"], mNode->getDefaultUserId());
}
HttpRequestHeader* header = action->getRequest()->getHeader();
string host = header->getFieldValue("X-Forwarded-Host");
if(host.length() == 0)
{
host = header->getFieldValue("Host");
}
content.append("http://");
content.append(host);
content.append("/api/3.0/sales/samples/file/");
content.append(fi["mediaId"]->getString());
content.push_back('/');
content.append(fi["id"]->getString());
content.push_back('\n');
}
// set up response header
HttpResponseHeader* header = action->getResponse()->getHeader();
header->setField("Content-Type", "audio/x-mpegurl");
header->setField(
"Content-Disposition", "attachment; filename=bitmunk-sample.m3u");
// create content input stream
ByteBuffer b(content.length());
b.put(content.c_str(), content.length(), false);
ByteArrayInputStream bais(&b);
// send sample
action->getResponse()->getHeader()->setStatus(200, "OK");
action->sendResult(&bais);
return rval;
}
void ProxyResourceHandler::operator()(BtpAction* action)
{
// get request host
HttpRequestHeader* hrh = action->getRequest()->getHeader();
string host = hrh->getFieldValue("X-Forwarded-Host");
if(host.length() == 0)
{
host = hrh->getFieldValue("Host");
}
// find a rule
Rule* rule = findRule(action, host);
if(rule == NULL)
{
// delegate to rest resource handler
RestResourceHandler::operator()(action);
}
else
{
// get URL to proxy or redirect to
UrlRef url = rule->url;
// get url host
string urlHost;
HttpResponse* res = action->getResponse();
bool secure = res->getConnection()->isSecure();
// if URL has no host, reuse incoming host
if(url->getHost().length() == 0)
{
urlHost = host;
}
// if URL has no port or uses a default port number, only use URL host
else if(
(url->getPort() == 0) ||
(secure && url->getPort() == 443) ||
(!secure && url->getPort() == 80))
{
urlHost = url->getHost();
}
// use URL host and port
else
{
urlHost = url->getHostAndPort();
}
// handle 0.0.0.0 (any host) by replacing it with the request host
if(strncmp(urlHost.c_str(), "0.0.0.0", 8) == 0)
{
// 0.0.0.0 is 8 chars long
urlHost.replace(0, 8, host.substr(0, host.find(':')).c_str());
}
// rewrite the request path if it does not match URL path
string path = hrh->getPath();
if(strcmp(path.c_str(), url->getPath().c_str()) != 0)
{
// check for path wildcard
if(strcmp(rule->path, "*") == 0)
{
// since a wildcard is used, prepend the URL path to the
// resource (if the url path isn't '/')
string urlPath = url->getPath();
if(urlPath.length() > 1)
{
path.insert(0, url->getPath().c_str());
}
}
else
{
// replace the part of the resource that matched the proxy
// rule with the rewrite path from the proxy URL
path.replace(0, strlen(rule->path), url->getPath().c_str());
}
}
// do redirect if appropriate
if(rule->type == Rule::Redirect)
{
// set response code
HttpResponseHeader* header = res->getHeader();
if(rule->permanent)
{
header->setStatus(301, "Moved Permanently");
}
else
{
header->setStatus(302, "Found");
}
// build new location url
bool secure = res->getConnection()->isSecure();
header->setField("Location", StringTools::format("%s://%s%s",
secure ? "https" : "http", urlHost.c_str(), path.c_str()));
action->sendResult();
}
// do proxy
else if(rule->type == Rule::Proxy)
{
// get client-side request
HttpRequest* req = action->getRequest();
// do path rewrite
hrh->setPath(path.c_str());
// add X-Forwarded headers
hrh->appendFieldValue("X-Forwarded-For",
req->getConnection()->getRemoteAddress()->toString(true).c_str());
hrh->appendFieldValue("X-Forwarded-Host",
hrh->getFieldValue("Host").c_str());
hrh->appendFieldValue("X-Forwarded-Server",
SocketTools::getHostname().c_str());
// rewrite host if rule specifies it
if(rule->rewriteHost)
{
hrh->setField("Host", urlHost.c_str());
}
// do proxy:
MO_CAT_INFO(BM_NODE_CAT,
"ProxyResourceHandler proxying %s%s => %s%s",
host.c_str(), hrh->getPath(), urlHost.c_str(), path.c_str());
MO_CAT_DEBUG(BM_NODE_CAT,
"ProxyResourceHandler request header for %s%s => %s%s:\n%s",
host.c_str(), hrh->getPath(),
urlHost.c_str(), path.c_str(),
hrh->toString().c_str());
// get a connection
BtpClient* btpc = mNode->getMessenger()->getBtpClient();
HttpConnection* conn = btpc->createConnection(false, &(*url));
if(conn == NULL)
{
// send service unavailable
HttpResponseHeader* header = action->getResponse()->getHeader();
header->setStatus(503, "Service Unavailable");
string content =
"<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n"
"<html><head>\n"
"<title>503 Service Unavailable</title>\n"
"</head><body>\n"
"<h1>Service Unavailable</h1>\n"
"<p>The service was not available.</p>\n"
"</body></html>";
ByteBuffer b(content.length());
b.put(content.c_str(), content.length(), false);
ByteArrayInputStream bais(&b);
action->sendResult(&bais);
}
else
{
// proxy the client's request and receive server's header (by
// writing it into the client's response header)
HttpResponse* res = action->getResponse();
if(_proxyHttp(req->getHeader(), req->getConnection(), conn) &&
conn->receiveHeader(res->getHeader()))
{
// proxy the server's response, consider result sent
_proxyHttp(res->getHeader(), conn, req->getConnection());
action->setResultSent(true);
}
// close connection
conn->close();
// clean up
delete conn;
}
if(!action->isResultSent())
{
// send exception (client's fault if code < 500)
ExceptionRef e = Exception::get();
action->sendException(e, e->getCode() < 500);
}
}
}
}
