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|
/*
* Copyright (C) 2005-2013 Team XBMC
* http://xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#if (defined HAVE_CONFIG_H) && (!defined TARGET_WINDOWS)
#include "config.h"
#endif
#include "WebServer.h"
#ifdef HAS_WEB_SERVER
#include "URL.h"
#include "Util.h"
#include "XBDateTime.h"
#include "filesystem/File.h"
#include "settings/Settings.h"
#include "threads/SingleLock.h"
#include "utils/Base64.h"
#include "utils/log.h"
#include "utils/Mime.h"
#include "utils/StringUtils.h"
#include "utils/URIUtils.h"
#include "utils/Variant.h"
#include <boost/make_shared.hpp>
//#define WEBSERVER_DEBUG
#ifdef TARGET_WINDOWS
#pragma comment(lib, "libmicrohttpd.dll.lib")
#endif
#define MAX_POST_BUFFER_SIZE 2048
#define PAGE_FILE_NOT_FOUND "<html><head><title>File not found</title></head><body>File not found</body></html>"
#define NOT_SUPPORTED "<html><head><title>Not Supported</title></head><body>The method you are trying to use is not supported by this server</body></html>"
#define CONTENT_RANGE_FORMAT "bytes %" PRId64 "-%" PRId64 "/%" PRId64
using namespace XFILE;
using namespace std;
using namespace JSONRPC;
typedef struct {
boost::shared_ptr<CFile> file;
HttpRanges ranges;
size_t rangeCount;
int64_t rangesLength;
string boundary;
string boundaryWithHeader;
bool boundaryWritten;
string contentType;
int64_t writePosition;
} HttpFileDownloadContext;
vector<IHTTPRequestHandler *> CWebServer::m_requestHandlers;
CWebServer::CWebServer()
{
m_running = false;
m_daemon_ip6 = NULL;
m_daemon_ip4 = NULL;
m_needcredentials = true;
m_Credentials64Encoded = "eGJtYzp4Ym1j"; // xbmc:xbmc
}
int CWebServer::FillArgumentMap(void *cls, enum MHD_ValueKind kind, const char *key, const char *value)
{
if (cls == NULL || key == NULL)
return MHD_NO;
map<string, string> *arguments = (map<string, string> *)cls;
arguments->insert(pair<string, string>(key, value != NULL ? value : StringUtils::Empty));
return MHD_YES;
}
int CWebServer::FillArgumentMultiMap(void *cls, enum MHD_ValueKind kind, const char *key, const char *value)
{
if (cls == NULL || key == NULL)
return MHD_NO;
multimap<string, string> *arguments = (multimap<string, string> *)cls;
arguments->insert(pair<string, string>(key, value != NULL ? value : StringUtils::Empty));
return MHD_YES;
}
int CWebServer::AskForAuthentication(struct MHD_Connection *connection)
{
int ret;
struct MHD_Response *response;
response = MHD_create_response_from_data (0, NULL, MHD_NO, MHD_NO);
if (!response)
return MHD_NO;
ret = AddHeader(response, MHD_HTTP_HEADER_WWW_AUTHENTICATE, "Basic realm=XBMC");
ret |= AddHeader(response, MHD_HTTP_HEADER_CONNECTION, "close");
if (!ret)
{
MHD_destroy_response (response);
return MHD_NO;
}
ret = MHD_queue_response (connection, MHD_HTTP_UNAUTHORIZED, response);
MHD_destroy_response (response);
return ret;
}
bool CWebServer::IsAuthenticated(CWebServer *server, struct MHD_Connection *connection)
{
CSingleLock lock (server->m_critSection);
if (!server->m_needcredentials)
return true;
const char *strbase = "Basic ";
const char *headervalue = MHD_lookup_connection_value(connection, MHD_HEADER_KIND, "Authorization");
if (NULL == headervalue)
return false;
if (strncmp (headervalue, strbase, strlen(strbase)))
return false;
return (server->m_Credentials64Encoded.compare(headervalue + strlen(strbase)) == 0);
}
#if (MHD_VERSION >= 0x00040001)
int CWebServer::AnswerToConnection(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)
#else
int CWebServer::AnswerToConnection(void *cls, struct MHD_Connection *connection,
const char *url, const char *method,
const char *version, const char *upload_data,
unsigned int *upload_data_size, void **con_cls)
#endif
{
CWebServer *server = (CWebServer *)cls;
HTTPMethod methodType = GetMethod(method);
HTTPRequest request = { connection, url, methodType, version, server };
if (!IsAuthenticated(server, connection))
return AskForAuthentication(connection);
// Check if this is the first call to
// AnswerToConnection for this request
if (*con_cls == NULL)
{
// Look for a IHTTPRequestHandler which can
// take care of the current request
for (vector<IHTTPRequestHandler *>::const_iterator it = m_requestHandlers.begin(); it != m_requestHandlers.end(); it++)
{
IHTTPRequestHandler *requestHandler = *it;
if (requestHandler->CheckHTTPRequest(request))
{
// We found a matching IHTTPRequestHandler
// so let's get a new instance for this request
IHTTPRequestHandler *handler = requestHandler->GetInstance();
// If we got a POST request we need to take
// care of the POST data
if (methodType == POST)
{
ConnectionHandler *conHandler = new ConnectionHandler();
conHandler->requestHandler = handler;
// Get the content-type of the POST data
string contentType = GetRequestHeaderValue(connection, MHD_HEADER_KIND, MHD_HTTP_HEADER_CONTENT_TYPE);
if (!contentType.empty())
{
// If the content-type is application/x-ww-form-urlencoded or multipart/form-data
// we can use MHD's POST processor
if (stricmp(contentType.c_str(), MHD_HTTP_POST_ENCODING_FORM_URLENCODED) == 0 ||
stricmp(contentType.c_str(), MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA) == 0)
{
// Get a new MHD_PostProcessor
conHandler->postprocessor = MHD_create_post_processor(connection, MAX_POST_BUFFER_SIZE, &CWebServer::HandlePostField, (void*)conHandler);
// MHD doesn't seem to be able to handle
// this post request
if (conHandler->postprocessor == NULL)
{
delete conHandler->requestHandler;
delete conHandler;
return SendErrorResponse(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, methodType);
}
}
}
// otherwise we need to handle the POST data ourselves
// which is done in the next call to AnswerToConnection
*con_cls = (void*)conHandler;
return MHD_YES;
}
// No POST request so nothing special to handle
else
return HandleRequest(handler, request);
}
}
}
// This is a subsequent call to
// AnswerToConnection for this request
else
{
// Again we need to take special care
// of the POST data
if (methodType == POST)
{
ConnectionHandler *conHandler = (ConnectionHandler *)*con_cls;
if (conHandler->requestHandler == NULL)
return SendErrorResponse(connection, MHD_HTTP_INTERNAL_SERVER_ERROR, methodType);
// We only need to handle POST data
// if there actually is data left to handle
if (*upload_data_size > 0)
{
// Either use MHD's POST processor
if (conHandler->postprocessor != NULL)
MHD_post_process(conHandler->postprocessor, upload_data, *upload_data_size);
// or simply copy the data to the handler
else
conHandler->requestHandler->AddPostData(upload_data, *upload_data_size);
// Signal that we have handled the data
*upload_data_size = 0;
return MHD_YES;
}
// We have handled all POST data
// so it's time to invoke the IHTTPRequestHandler
else
{
if (conHandler->postprocessor != NULL)
MHD_destroy_post_processor(conHandler->postprocessor);
*con_cls = NULL;
int ret = HandleRequest(conHandler->requestHandler, request);
delete conHandler;
return ret;
}
}
// It's unusual to get more than one call
// to AnswerToConnection for none-POST
// requests, but let's handle it anyway
else
{
for (vector<IHTTPRequestHandler *>::const_iterator it = m_requestHandlers.begin(); it != m_requestHandlers.end(); it++)
{
IHTTPRequestHandler *requestHandler = *it;
if (requestHandler->CheckHTTPRequest(request))
return HandleRequest(requestHandler->GetInstance(), request);
}
}
}
return SendErrorResponse(connection, MHD_HTTP_NOT_FOUND, methodType);
}
#if (MHD_VERSION >= 0x00040001)
int CWebServer::HandlePostField(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)
#else
int CWebServer::HandlePostField(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,
unsigned int size)
#endif
{
ConnectionHandler *conHandler = (ConnectionHandler *)cls;
if (conHandler == NULL || conHandler->requestHandler == NULL || size == 0)
return MHD_NO;
conHandler->requestHandler->AddPostField(key, string(data, size));
return MHD_YES;
}
int CWebServer::HandleRequest(IHTTPRequestHandler *handler, const HTTPRequest &request)
{
if (handler == NULL)
return SendErrorResponse(request.connection, MHD_HTTP_INTERNAL_SERVER_ERROR, request.method);
int ret = handler->HandleHTTPRequest(request);
if (ret == MHD_NO)
{
delete handler;
return SendErrorResponse(request.connection, MHD_HTTP_INTERNAL_SERVER_ERROR, request.method);
}
struct MHD_Response *response = NULL;
int responseCode = handler->GetHTTPResonseCode();
switch (handler->GetHTTPResponseType())
{
case HTTPNone:
delete handler;
return MHD_NO;
case HTTPRedirect:
ret = CreateRedirect(request.connection, handler->GetHTTPRedirectUrl(), response);
break;
case HTTPFileDownload:
ret = CreateFileDownloadResponse(request.connection, handler->GetHTTPResponseFile(), request.method, response, responseCode);
break;
case HTTPMemoryDownloadNoFreeNoCopy:
ret = CreateMemoryDownloadResponse(request.connection, handler->GetHTTPResponseData(), handler->GetHTTPResonseDataLength(), false, false, response);
break;
case HTTPMemoryDownloadNoFreeCopy:
ret = CreateMemoryDownloadResponse(request.connection, handler->GetHTTPResponseData(), handler->GetHTTPResonseDataLength(), false, true, response);
break;
case HTTPMemoryDownloadFreeNoCopy:
ret = CreateMemoryDownloadResponse(request.connection, handler->GetHTTPResponseData(), handler->GetHTTPResonseDataLength(), true, false, response);
break;
case HTTPMemoryDownloadFreeCopy:
ret = CreateMemoryDownloadResponse(request.connection, handler->GetHTTPResponseData(), handler->GetHTTPResonseDataLength(), true, true, response);
break;
case HTTPError:
ret = CreateErrorResponse(request.connection, handler->GetHTTPResonseCode(), request.method, response);
break;
default:
delete handler;
return SendErrorResponse(request.connection, MHD_HTTP_INTERNAL_SERVER_ERROR, request.method);
}
if (ret == MHD_NO)
{
delete handler;
return SendErrorResponse(request.connection, MHD_HTTP_INTERNAL_SERVER_ERROR, request.method);
}
multimap<string, string> header = handler->GetHTTPResponseHeaderFields();
for (multimap<string, string>::const_iterator it = header.begin(); it != header.end(); it++)
AddHeader(response, it->first.c_str(), it->second.c_str());
MHD_queue_response(request.connection, responseCode, response);
MHD_destroy_response(response);
delete handler;
return MHD_YES;
}
HTTPMethod CWebServer::GetMethod(const char *method)
{
if (strcmp(method, "GET") == 0)
return GET;
if (strcmp(method, "POST") == 0)
return POST;
if (strcmp(method, "HEAD") == 0)
return HEAD;
return UNKNOWN;
}
int CWebServer::CreateRedirect(struct MHD_Connection *connection, const string &strURL, struct MHD_Response *&response)
{
response = MHD_create_response_from_data (0, NULL, MHD_NO, MHD_NO);
if (response)
{
AddHeader(response, "Location", strURL.c_str());
return MHD_YES;
}
return MHD_NO;
}
int CWebServer::CreateFileDownloadResponse(struct MHD_Connection *connection, const string &strURL, HTTPMethod methodType, struct MHD_Response *&response, int &responseCode)
{
boost::shared_ptr<CFile> file = boost::make_shared<CFile>();
#ifdef WEBSERVER_DEBUG
CLog::Log(LOGDEBUG, "webserver [IN] %s", strURL.c_str());
multimap<string, string> headers;
if (GetRequestHeaderValues(connection, MHD_HEADER_KIND, headers) > 0)
{
for (multimap<string, string>::const_iterator header = headers.begin(); header != headers.end(); header++)
CLog::Log(LOGDEBUG, "webserver [IN] %s: %s", header->first.c_str(), header->second.c_str());
}
#endif
if (file->Open(strURL, READ_NO_CACHE))
{
bool getData = true;
bool ranged = false;
int64_t fileLength = file->GetLength();
// try to get the file's last modified date
CDateTime lastModified;
if (!GetLastModifiedDateTime(file.get(), lastModified))
lastModified.Reset();
// get the MIME type for the Content-Type header
std::string ext = URIUtils::GetExtension(strURL);
StringUtils::ToLower(ext);
string mimeType = CreateMimeTypeFromExtension(ext.c_str());
if (methodType != HEAD)
{
int64_t firstPosition = 0;
int64_t lastPosition = fileLength - 1;
uint64_t totalLength = 0;
std::auto_ptr<HttpFileDownloadContext> context(new HttpFileDownloadContext());
context->file = file;
context->rangesLength = fileLength;
context->contentType = mimeType;
context->boundaryWritten = false;
context->writePosition = 0;
if (methodType == GET)
{
// handle If-Modified-Since
string ifModifiedSince = GetRequestHeaderValue(connection, MHD_HEADER_KIND, "If-Modified-Since");
if (!ifModifiedSince.empty() && lastModified.IsValid())
{
CDateTime ifModifiedSinceDate;
ifModifiedSinceDate.SetFromRFC1123DateTime(ifModifiedSince);
if (lastModified.GetAsUTCDateTime() <= ifModifiedSinceDate)
{
getData = false;
response = MHD_create_response_from_data(0, NULL, MHD_NO, MHD_NO);
if (response == NULL)
return MHD_NO;
responseCode = MHD_HTTP_NOT_MODIFIED;
}
}
if (getData)
{
// handle Range header
context->rangesLength = ParseRangeHeader(GetRequestHeaderValue(connection, MHD_HEADER_KIND, "Range"), fileLength, context->ranges, firstPosition, lastPosition);
// handle If-Range header but only if the Range header is present
if (!context->ranges.empty())
{
string ifRange = GetRequestHeaderValue(connection, MHD_HEADER_KIND, "If-Range");
if (!ifRange.empty() && lastModified.IsValid())
{
CDateTime ifRangeDate;
ifRangeDate.SetFromRFC1123DateTime(ifRange);
// check if the last modification is newer than the If-Range date
// if so we have to server the whole file instead
if (lastModified.GetAsUTCDateTime() > ifRangeDate)
context->ranges.clear();
}
}
}
}
if (getData)
{
// if there are no ranges, add the whole range
if (context->ranges.empty() || context->rangesLength == fileLength)
{
if (context->rangesLength == fileLength)
context->ranges.clear();
context->ranges.push_back(HttpRange(0, fileLength - 1));
context->rangesLength = fileLength;
firstPosition = 0;
lastPosition = fileLength - 1;
}
else
responseCode = MHD_HTTP_PARTIAL_CONTENT;
// remember the total number of ranges
context->rangeCount = context->ranges.size();
// remember the total length
totalLength = context->rangesLength;
// we need to remember whether we are ranged because the range length
// might change and won't be reliable anymore for length comparisons
ranged = context->rangeCount > 1 || context->rangesLength < fileLength;
// adjust the MIME type and range length in case of multiple ranges
// which requires multipart boundaries
if (context->rangeCount > 1)
{
context->boundary = GenerateMultipartBoundary();
mimeType = "multipart/byteranges; boundary=" + context->boundary;
// build part of the boundary with the optional Content-Type header
// "--<boundary>\r\nContent-Type: <content-type>\r\n
context->boundaryWithHeader = "\r\n--" + context->boundary + "\r\n";
if (!context->contentType.empty())
context->boundaryWithHeader += "Content-Type: " + context->contentType + "\r\n";
// for every range, we need to add a boundary with header
for (HttpRanges::const_iterator range = context->ranges.begin(); range != context->ranges.end(); range++)
{
// we need to temporarily add the Content-Range header to the
// boundary to be able to determine the length
string completeBoundaryWithHeader = context->boundaryWithHeader;
completeBoundaryWithHeader += StringUtils::Format("Content-Range: " CONTENT_RANGE_FORMAT,
range->first, range->second, range->second - range->first + 1);
completeBoundaryWithHeader += "\r\n\r\n";
totalLength += completeBoundaryWithHeader.size();
}
// and at the very end a special end-boundary "\r\n--<boundary>--"
totalLength += 4 + context->boundary.size() + 2;
}
// set the initial write position
context->writePosition = context->ranges.begin()->first;
// create the response object
response = MHD_create_response_from_callback(totalLength,
2048,
&CWebServer::ContentReaderCallback, context.get(),
&CWebServer::ContentReaderFreeCallback);
if (response == NULL)
return MHD_NO;
context.release(); // ownership was passed to mhd
}
// add Content-Range header
if (ranged)
AddHeader(response, "Content-Range", StringUtils::Format(CONTENT_RANGE_FORMAT, firstPosition, lastPosition, fileLength).c_str());
}
else
{
getData = false;
std::string contentLength = StringUtils::Format("%" PRId64, fileLength);
response = MHD_create_response_from_data(0, NULL, MHD_NO, MHD_NO);
if (response == NULL)
return MHD_NO;
AddHeader(response, "Content-Length", contentLength);
}
// add "Accept-Ranges: bytes" header
AddHeader(response, "Accept-Ranges", "bytes");
// set the Content-Type header
if (!mimeType.empty())
AddHeader(response, "Content-Type", mimeType.c_str());
// set the Last-Modified header
if (lastModified.IsValid())
AddHeader(response, "Last-Modified", lastModified.GetAsRFC1123DateTime());
// set the Expires header
CDateTime expiryTime = CDateTime::GetCurrentDateTime();
if (StringUtils::EqualsNoCase(mimeType, "text/html") ||
StringUtils::EqualsNoCase(mimeType, "text/css") ||
StringUtils::EqualsNoCase(mimeType, "application/javascript"))
expiryTime += CDateTimeSpan(1, 0, 0, 0);
else
expiryTime += CDateTimeSpan(365, 0, 0, 0);
AddHeader(response, "Expires", expiryTime.GetAsRFC1123DateTime());
}
else
{
CLog::Log(LOGERROR, "WebServer: Failed to open %s", strURL.c_str());
return SendErrorResponse(connection, MHD_HTTP_NOT_FOUND, methodType);
}
return MHD_YES;
}
int CWebServer::CreateErrorResponse(struct MHD_Connection *connection, int responseType, HTTPMethod method, struct MHD_Response *&response)
{
size_t payloadSize = 0;
void *payload = NULL;
if (method != HEAD)
{
switch (responseType)
{
case MHD_HTTP_NOT_FOUND:
payloadSize = strlen(PAGE_FILE_NOT_FOUND);
payload = (void *)PAGE_FILE_NOT_FOUND;
break;
case MHD_HTTP_NOT_IMPLEMENTED:
payloadSize = strlen(NOT_SUPPORTED);
payload = (void *)NOT_SUPPORTED;
break;
}
}
response = MHD_create_response_from_data (payloadSize, payload, MHD_NO, MHD_NO);
if (response)
return MHD_YES;
return MHD_NO;
}
int CWebServer::CreateMemoryDownloadResponse(struct MHD_Connection *connection, void *data, size_t size, bool free, bool copy, struct MHD_Response *&response)
{
response = MHD_create_response_from_data (size, data, free ? MHD_YES : MHD_NO, copy ? MHD_YES : MHD_NO);
if (response)
return MHD_YES;
return MHD_NO;
}
int CWebServer::SendErrorResponse(struct MHD_Connection *connection, int errorType, HTTPMethod method)
{
struct MHD_Response *response = NULL;
int ret = CreateErrorResponse(connection, errorType, method, response);
if (ret == MHD_YES)
{
ret = MHD_queue_response (connection, errorType, response);
MHD_destroy_response (response);
}
return ret;
}
void* CWebServer::UriRequestLogger(void *cls, const char *uri)
{
CLog::Log(LOGDEBUG, "webserver: request received for %s", uri);
return NULL;
}
#if (MHD_VERSION >= 0x00090200)
ssize_t CWebServer::ContentReaderCallback(void *cls, uint64_t pos, char *buf, size_t max)
#elif (MHD_VERSION >= 0x00040001)
int CWebServer::ContentReaderCallback(void *cls, uint64_t pos, char *buf, int max)
#else //libmicrohttpd < 0.4.0
int CWebServer::ContentReaderCallback(void *cls, size_t pos, char *buf, int max)
#endif
{
HttpFileDownloadContext *context = (HttpFileDownloadContext *)cls;
if (context == NULL || context->file == NULL)
return -1;
#ifdef WEBSERVER_DEBUG
CLog::Log(LOGDEBUG, "webserver [OUT] write maximum %d bytes from %" PRIu64 " (%" PRIu64 ")", max, context->writePosition, pos);
#endif
// check if we need to add the end-boundary
if (context->rangeCount > 1 && context->ranges.empty())
{
// put together the end-boundary
string endBoundary = "\r\n--" + context->boundary + "--";
if ((unsigned int)max != endBoundary.size())
return -1;
// copy the boundary into the buffer
memcpy(buf, endBoundary.c_str(), endBoundary.size());
return endBoundary.size();
}
if (context->ranges.empty())
return -1;
int64_t start = context->ranges.at(0).first;
int64_t end = context->ranges.at(0).second;
int64_t maximum = (int64_t)max;
int written = 0;
if (context->rangeCount > 1 && !context->boundaryWritten)
{
// put together the boundary for the current range
string boundary = context->boundaryWithHeader;
boundary += StringUtils::Format("Content-Range: " CONTENT_RANGE_FORMAT, start, end, end - start + 1) + "\r\n\r\n";
// copy the boundary into the buffer
memcpy(buf, boundary.c_str(), boundary.size());
// advance the buffer position
buf += boundary.size();
// update the number of written byte
written += boundary.size();
// update the maximum number of bytes
maximum -= boundary.size();
context->boundaryWritten = true;
}
// check if the current position is within this range
// if not, set it to the start position
if (context->writePosition < start || context->writePosition > end)
context->writePosition = start;
// adjust the maximum number of read bytes
maximum = std::min(maximum, end - context->writePosition + 1);
// seek to the position if necessary
if(context->writePosition != context->file->GetPosition())
context->file->Seek(context->writePosition);
// read data from the file
ssize_t res = context->file->Read(buf, maximum);
if (res <= 0)
return -1;
// add the number of read bytes to the number of written bytes
written += res;
#ifdef WEBSERVER_DEBUG
CLog::Log(LOGDEBUG, "webserver [OUT] wrote %d bytes from %" PRId64 " in range (%" PRId64 " - %" PRId64 ")", written, context->writePosition, start, end);
#endif
// update the current write position
context->writePosition += res;
// if we have read all the data from the current range
// remove it from the list
if (context->writePosition >= end + 1)
{
context->ranges.erase(context->ranges.begin());
context->boundaryWritten = false;
}
return written;
}
void CWebServer::ContentReaderFreeCallback(void *cls)
{
HttpFileDownloadContext *context = (HttpFileDownloadContext *)cls;
delete context;
#ifdef WEBSERVER_DEBUG
CLog::Log(LOGDEBUG, "webserver [OUT] done");
#endif
}
struct MHD_Daemon* CWebServer::StartMHD(unsigned int flags, int port)
{
unsigned int timeout = 60 * 60 * 24;
return MHD_start_daemon(flags |
#if (MHD_VERSION >= 0x00040002) && (MHD_VERSION < 0x00090B01)
// use main thread for each connection, can only handle one request at a
// time [unless you set the thread pool size]
MHD_USE_SELECT_INTERNALLY
#else
// one thread per connection
// WARNING: set MHD_OPTION_CONNECTION_TIMEOUT to something higher than 1
// otherwise on libmicrohttpd 0.4.4-1 it spins a busy loop
MHD_USE_THREAD_PER_CONNECTION
#endif
,
port,
NULL,
NULL,
&CWebServer::AnswerToConnection,
this,
#if (MHD_VERSION >= 0x00040002) && (MHD_VERSION < 0x00090B01)
MHD_OPTION_THREAD_POOL_SIZE, 4,
#endif
MHD_OPTION_CONNECTION_LIMIT, 512,
MHD_OPTION_CONNECTION_TIMEOUT, timeout,
MHD_OPTION_URI_LOG_CALLBACK, &CWebServer::UriRequestLogger, this,
MHD_OPTION_END);
}
bool CWebServer::Start(int port, const string &username, const string &password)
{
SetCredentials(username, password);
if (!m_running)
{
int v6testSock;
if ((v6testSock = socket(AF_INET6, SOCK_STREAM, 0)) >= 0)
{
closesocket(v6testSock);
m_daemon_ip6 = StartMHD(MHD_USE_IPv6, port);
}
m_daemon_ip4 = StartMHD(0 , port);
m_running = (m_daemon_ip6 != NULL) || (m_daemon_ip4 != NULL);
if (m_running)
CLog::Log(LOGNOTICE, "WebServer: Started the webserver");
else
CLog::Log(LOGERROR, "WebServer: Failed to start the webserver");
}
return m_running;
}
bool CWebServer::Stop()
{
if (m_running)
{
if (m_daemon_ip6 != NULL)
MHD_stop_daemon(m_daemon_ip6);
if (m_daemon_ip4 != NULL)
MHD_stop_daemon(m_daemon_ip4);
m_running = false;
CLog::Log(LOGNOTICE, "WebServer: Stopped the webserver");
}
else
CLog::Log(LOGNOTICE, "WebServer: Stopped failed because its not running");
return !m_running;
}
bool CWebServer::IsStarted()
{
return m_running;
}
void CWebServer::SetCredentials(const string &username, const string &password)
{
CSingleLock lock (m_critSection);
std::string str = username + ':' + password;
Base64::Encode(str.c_str(), m_Credentials64Encoded);
m_needcredentials = !password.empty();
}
bool CWebServer::PrepareDownload(const char *path, CVariant &details, std::string &protocol)
{
if (CFile::Exists(path))
{
protocol = "http";
string url;
std::string strPath = path;
if (StringUtils::StartsWith(strPath, "image://") ||
(StringUtils::StartsWith(strPath, "special://") && StringUtils::EndsWith(strPath, ".tbn")))
url = "image/";
else
url = "vfs/";
url += CURL::Encode(strPath);
details["path"] = url;
return true;
}
return false;
}
bool CWebServer::Download(const char *path, CVariant &result)
{
return false;
}
int CWebServer::GetCapabilities()
{
return Response | FileDownloadRedirect;
}
void CWebServer::RegisterRequestHandler(IHTTPRequestHandler *handler)
{
if (handler == NULL)
return;
for (vector<IHTTPRequestHandler *>::iterator it = m_requestHandlers.begin(); it != m_requestHandlers.end(); it++)
{
if (*it == handler)
return;
if ((*it)->GetPriority() < handler->GetPriority())
{
m_requestHandlers.insert(it, handler);
return;
}
}
m_requestHandlers.push_back(handler);
}
void CWebServer::UnregisterRequestHandler(IHTTPRequestHandler *handler)
{
if (handler == NULL)
return;
for (vector<IHTTPRequestHandler *>::iterator it = m_requestHandlers.begin(); it != m_requestHandlers.end(); it++)
{
if (*it == handler)
{
m_requestHandlers.erase(it);
return;
}
}
}
std::string CWebServer::GetRequestHeaderValue(struct MHD_Connection *connection, enum MHD_ValueKind kind, const std::string &key)
{
if (connection == NULL)
return "";
const char* value = MHD_lookup_connection_value(connection, kind, key.c_str());
if (value == NULL)
return "";
if (stricmp(key.c_str(), MHD_HTTP_HEADER_CONTENT_TYPE) == 0)
{
// Work around a bug in firefox (see https://bugzilla.mozilla.org/show_bug.cgi?id=416178)
// by cutting of anything that follows a ";" in a "Content-Type" header field
string strValue(value);
size_t pos = strValue.find(';');
if (pos != string::npos)
strValue = strValue.substr(0, pos);
return strValue;
}
return value;
}
int CWebServer::GetRequestHeaderValues(struct MHD_Connection *connection, enum MHD_ValueKind kind, std::map<std::string, std::string> &headerValues)
{
if (connection == NULL)
return -1;
return MHD_get_connection_values(connection, kind, FillArgumentMap, &headerValues);
}
int CWebServer::GetRequestHeaderValues(struct MHD_Connection *connection, enum MHD_ValueKind kind, std::multimap<std::string, std::string> &headerValues)
{
if (connection == NULL)
return -1;
return MHD_get_connection_values(connection, kind, FillArgumentMultiMap, &headerValues);
}
std::string CWebServer::CreateMimeTypeFromExtension(const char *ext)
{
if (strcmp(ext, ".kar") == 0) return "audio/midi";
if (strcmp(ext, ".tbn") == 0) return "image/jpeg";
return CMime::GetMimeType(ext);
}
int CWebServer::AddHeader(struct MHD_Response *response, const std::string &name, const std::string &value)
{
if (response == NULL || name.empty())
return 0;
#ifdef WEBSERVER_DEBUG
CLog::Log(LOGDEBUG, "webserver [OUT] %s: %s", name.c_str(), value.c_str());
#endif
return MHD_add_response_header(response, name.c_str(), value.c_str());
}
int64_t CWebServer::ParseRangeHeader(const std::string &rangeHeaderValue, int64_t totalLength, HttpRanges &ranges, int64_t &firstPosition, int64_t &lastPosition)
{
firstPosition = 0;
lastPosition = totalLength - 1;
if (rangeHeaderValue.empty() || !StringUtils::StartsWithNoCase(rangeHeaderValue, "bytes="))
return totalLength;
int64_t rangesLength = 0;
// remove "bytes=" from the beginning
string rangesValue = rangeHeaderValue.substr(6);
// split the value of the "Range" header by ","
vector<string> rangeValues = StringUtils::Split(rangesValue, ",");
for (vector<string>::const_iterator range = rangeValues.begin(); range != rangeValues.end(); range++)
{
// there must be a "-" in the range definition
if (range->find("-") == string::npos)
{
ranges.clear();
return totalLength;
}
vector<string> positions = StringUtils::Split(*range, "-");
if (positions.size() > 2)
{
ranges.clear();
return totalLength;
}
int64_t positionStart = -1;
int64_t positionEnd = -1;
if (!positions.at(0).empty())
positionStart = str2int64(positions.at(0), -1);
if (!positions.at(1).empty())
positionEnd = str2int64(positions.at(1), -1);
if (positionStart < 0 && positionEnd < 0)
{
ranges.clear();
return totalLength;
}
// if there's no end position, use the file's length
if (positionEnd < 0)
positionEnd = totalLength - 1;
else if (positionStart < 0)
{
positionStart = totalLength - positionEnd;
positionEnd = totalLength - 1;
}
if (positionEnd < positionStart)
{
ranges.clear();
return totalLength;
}
if (ranges.empty())
{
firstPosition = positionStart;
lastPosition = positionEnd;
}
else
{
if (positionStart < firstPosition)
firstPosition = positionStart;
if (positionEnd > lastPosition)
lastPosition = positionEnd;
}
ranges.push_back(HttpRange(positionStart, positionEnd));
rangesLength += positionEnd - positionStart + 1;
}
if (!ranges.empty() || rangesLength > 0)
return rangesLength;
return totalLength;
}
std::string CWebServer::GenerateMultipartBoundary()
{
static char chars[] = "-_1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
// create a string of length 30 to 40 and pre-fill it with "-"
size_t count = (size_t)CUtil::GetRandomNumber() % 11 + 30;
string boundary(count, '-');
for (size_t i = (size_t)CUtil::GetRandomNumber() % 5 + 8; i < count; i++)
boundary.replace(i, 1, 1, chars[(size_t)CUtil::GetRandomNumber() % 64]);
return boundary;
}
bool CWebServer::GetLastModifiedDateTime(XFILE::CFile *file, CDateTime &lastModified)
{
if (file == NULL)
return false;
struct __stat64 statBuffer;
if (file->Stat(&statBuffer) != 0)
return false;
struct tm *time;
#ifdef HAVE_LOCALTIME_R
struct tm result = {};
time = localtime_r((time_t*)&statBuffer.st_mtime, &result);
#else
time = localtime((time_t *)&statBuffer.st_mtime);
#endif
if (time == NULL)
return false;
lastModified = *time;
return true;
}
#endif
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